TWI750693B - gate - Google Patents

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Publication number
TWI750693B
TWI750693B TW109119884A TW109119884A TWI750693B TW I750693 B TWI750693 B TW I750693B TW 109119884 A TW109119884 A TW 109119884A TW 109119884 A TW109119884 A TW 109119884A TW I750693 B TWI750693 B TW I750693B
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Taiwan
Prior art keywords
valve
frame
movable
movable valve
plate
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TW109119884A
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Chinese (zh)
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TW202113257A (en
Inventor
徳平真之介
井上英晃
柴山浩司
和出拓也
古瀬晴邦
猿渡治郎
鐸木幹也
和田慎一
照井敬晶
石田智也
迫田聖也
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日商愛發科股份有限公司
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
    • F16K3/18—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
    • F16K27/045—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with pivotal obturating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
    • F16K3/06—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/12—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces
    • F16K3/14—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces with special arrangements for separating the sealing faces or for pressing them together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/52—Mechanical actuating means with crank, eccentric, or cam
    • F16K31/528—Mechanical actuating means with crank, eccentric, or cam with pin and slot

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)
  • Details Of Valves (AREA)

Abstract

本發明之閘閥具備：閥箱，其具有第1開口部及第2開口部；閥體，其位於上述閥箱內之中空部內；旋轉軸，其支持上述閥體；旋轉驅動部，其可旋轉驅動上述閥體；中立閥部，其構成上述閥體；可動閥框部，其設置於上述閥體；閥框彈推部，其連接上述中立閥部與上述可動閥框部；可動閥板部，其可相對於上述可動閥框部介隔板滑動密封部於流路方向進行位置移動地設置於上述閥體；閥板彈推部，其連接上述可動閥框部與上述可動閥板部；閥箱彈推部，其可將上述可動閥框部向與上述第1開口部之周緣接觸之閥閉塞位置移動；及驅動部，其驅動上述閥箱彈推部。上述閥框彈推部具有：框導銷，其固定於上述可動閥框部；貫通孔，其設置於上述中立閥部；及框螺旋彈簧，其將上述框導銷之基部之周圍及上述貫通孔之周圍朝上述流路方向之反向彈推。 The gate valve of the present invention includes: a valve box having a first opening and a second opening; a valve body located in the hollow part of the valve box; a rotating shaft supporting the valve body; and a rotation driving part rotatable The valve body is driven; the neutral valve part, which constitutes the valve body; the movable valve frame part, which is arranged on the valve body; the valve frame spring push part, which connects the neutral valve part and the movable valve frame part; the movable valve plate part , which can be positioned on the valve body relative to the movable valve frame part through the partition plate sliding sealing part to move in the direction of the flow path; the valve plate pushing part is connected to the movable valve frame part and the movable valve plate part; A valve box springing portion capable of moving the movable valve frame portion to a valve closing position in contact with a peripheral edge of the first opening portion, and a driving portion driving the valve box springing portion. The above-mentioned valve frame springing part has: a frame guide pin, which is fixed on the above-mentioned movable valve frame part; a through hole, which is arranged in the above-mentioned neutral valve part; The surrounding of the hole is pushed in the opposite direction of the above flow path.

Description

閘閥 gate

本發明係關於一種閘閥，尤其係關於一種適合用於可消除逆壓之擺動閥之技術。 The present invention relates to a gate valve, in particular to a technology suitable for a swing valve that can eliminate back pressure.

於真空裝置等中，設置有閘閥，該閘閥分隔腔室與配管之間、配管與配管之間、或配管與泵等之間等不同真空度之2個空間之間，並連接被分隔之2個空間。作為此種閘閥，已知各種形態之閥。 In a vacuum device, etc., a gate valve is provided, which separates two spaces with different degrees of vacuum, such as between a chamber and a pipe, between a pipe and a pipe, or between a pipe and a pump, etc., and connects the two separated spaces. a space. As such a gate valve, various types of valves are known.

本發明者們已開發可進行高可靠性之分隔動作，並可實現100%之逆壓消除率之閘閥，且已進行專利申請(專利文獻1)。於該閘閥中設置：閥箱，其橫斷流路而形成；中立閥部，其可藉由與流路方向平行之軸線之旋轉軸旋轉；第1可動閥部，其作為可相對於中立閥部於流路方向滑動之可動閥部，被推壓至閥箱之流路之開口部並可密封；第2可動閥部，其可相對於第1可動閥部於流路方向滑動；第1彈推部，其將第1可動閥部推壓至開口部並可進行密封動作；第2彈推部，其可調整第1可動閥部與上述第2可動閥部之厚度尺寸；及第3彈推部，其對中立閥部彈推第1可動閥部。 The inventors of the present invention have developed a gate valve that can perform high-reliability separation operations and can achieve a 100% back pressure elimination rate, and have filed a patent application (Patent Document 1). The gate valve is provided with: a valve box, which is formed by traversing the flow path; a neutral valve part, which can be rotated by a rotating shaft with an axis parallel to the direction of the flow path; a first movable valve part, which can be relative to the neutral valve. The movable valve part, which slides in the direction of the flow path, is pressed against the opening of the flow path of the valve box and can be sealed; the second movable valve part is slidable in the direction of the flow path relative to the first movable valve part; A pusher part, which pushes the first movable valve part to the opening part and can perform a sealing action; a second pusher part, which can adjust the thickness of the first movable valve part and the above-mentioned second movable valve part; and a third The pushing portion pushes the first movable valve portion against the neutral valve portion.

於設置閘閥之裝置或製造線等，謀求閘閥之開口徑之大型化，且同 時謀求可動閥部之輕量化。 In the installation of the gate valve or the manufacturing line, etc., the opening diameter of the gate valve should be enlarged, and the same At the same time, it seeks to reduce the weight of the movable valve part.

[先前技術文獻] [Prior Art Literature] [專利文獻] [Patent Literature]

[專利文獻1] 日本專利第6358727號公報 [Patent Document 1] Japanese Patent No. 6358727

然而，隨著閘閥之開口徑之大型化而閥體之周向之長度增加。因此，於閉塞閥時，成為維持密封之O形環貼附於開口部周邊之閥箱表面之狀態，於打開閥時，為剝離該貼附之O形環所需之作動力變大。 However, as the opening diameter of the gate valve increases, the circumferential length of the valve body increases. Therefore, when the valve is closed, the O-ring that maintains the seal adheres to the surface of the valve box around the opening, and when the valve is opened, the actuating force required to peel off the adhered O-ring increases.

然而，於專利文獻1之技術中，可知隨著閘閥之開口徑之大型化，為剝離貼附之O形環，有第1~第3彈推部之動作不充分之情形。 However, according to the technique of Patent Document 1, as the opening diameter of the gate valve increases, it is found that the operations of the first to third push parts are insufficient in order to peel off the attached O-ring.

又，隨著閘閥之開口徑之大型化，閥體之重量增大。因此，於打開閥時，需將閥體設為可於閥箱之內部旋轉之姿勢，但需姿勢控制之閥體之重量變大。 In addition, with the enlargement of the opening diameter of the gate valve, the weight of the valve body increases. Therefore, when opening the valve, the valve body needs to be set to a posture that can rotate inside the valve box, but the weight of the valve body that needs posture control increases.

然而，於專利文獻1之技術之第1~第3彈推部中，隨著開口徑之大型化，有用於進行閥體之姿勢控制之動作之彈推力不充分之可能性。 However, in the first to third pushing parts of the technique of Patent Document 1, with the enlargement of the opening diameter, there is a possibility that the pushing force for performing the operation of the posture control of the valve body may not be sufficient.

再者，隨著閘閥之開口徑之大型化而閥體之重量增加，且為驅動閥體所需之驅動力亦變大。因此，對專利文獻1之技術之可動閥部作用之力矩亦增加。因此，雖需與力矩抵抗而進行姿勢控制，但於專利文獻1之技 術之第1~第3彈推部中，隨著閘閥之開口徑之大型化，有用於該姿勢控制之彈推力不充分之可能性。 Furthermore, as the opening diameter of the gate valve increases, the weight of the valve body increases, and the driving force required for driving the valve body also increases. Therefore, the moment which acts on the movable valve part of the technique of patent document 1 also increases. Therefore, although it is necessary to perform posture control against the moment, the technique of Patent Document 1 In the 1st to 3rd push parts of the technique, as the opening diameter of the gate valve increases, there is a possibility that the push force for the posture control is insufficient.

又，作為專利文獻1之技術之第3彈推部(輔助彈簧)，雖使用板簧，但於該構成中，於更換等維護時，必須分解閥體本身。因此，有欲削減作業步驟與作業時間之要求。 In addition, although a leaf spring is used as the third urging portion (assistance spring) of the technique of Patent Document 1, in this configuration, the valve body itself must be disassembled during maintenance such as replacement. Therefore, there is a demand to reduce the operation steps and the operation time.

再者，於設為板簧之第3彈推部(輔助彈簧)中，有提高極多次使用之動作可靠性，即零件之可靠性且謀求長壽命化，欲削減維護次數之要求。 Furthermore, in the third urging portion (auxiliary spring), which is a leaf spring, there is a need to improve the reliability of operation for extremely many times of use, that is, to increase the reliability of parts and to achieve a longer life, and to reduce the number of maintenance.

本發明係鑑於上述情況而完成者，且為欲達成以下目的者。 The present invention has been made in view of the above-mentioned circumstances, and is intended to achieve the following objects.

1.於閘閥中容易實現開口徑之大型化。 1. It is easy to realize the enlargement of the opening diameter in the gate valve.

2.容易進行閥體之閥開動作。 2. It is easy to carry out the valve opening action of the valve body.

3.確實地進行閥體之姿勢控制。 3. The posture control of the valve body is surely carried out.

4.提高閥動作之確實性。 4. Improve the reliability of valve action.

5.提高維護之容易性。 5. Improve the ease of maintenance.

6.謀求零件之長壽命化。 6. To seek longer life of parts.

7.減少維護頻率。 7. Reduce maintenance frequency.

本發明之閘閥係分隔流路之閘閥，且具備：閥箱，其***上述流路，且具有相互對向而連通形成上述流路之第1開口部及第2開口部；閥體，其位於上述閥箱內之中空部內並可開放及閉塞上述流路；旋轉軸，其支持上述閥體使之可於上述中空部內之退避位置與閥開口遮蔽位置之間旋 轉，且具有於流路方向延伸之軸線，並固定於上述閥體；旋轉驅動部，其可旋轉驅動上述閥體；中立閥部，其構成上述閥體；可動閥框部，其可相對於上述中立閥部於上述流路方向進行位置移動地設置於上述閥體；閥框彈推部，其連接上述中立閥部與上述可動閥框部；可動閥板部，其可相對於上述可動閥框部介隔板滑動密封部於上述流路方向進行位置移動地設置於上述閥體；閥板彈推部，其連接上述可動閥框部與上述可動閥板部；閥箱彈推部，其設置於上述閥箱，並可將上述閥開口遮蔽位置之上述可動閥框部向與上述第1開口部之周緣接觸之閥閉塞位置移動；及驅動部，其驅動上述閥箱彈推部。上述閥框彈推部具有：框導銷，其具有固定於上述可動閥框部之基部，且立設於上述流路方向而限制上述中立閥部與上述可動閥框部之滑動方向；貫通孔，其設置於上述中立閥部，且供上述框導銷之接近前端的位置可滑動地貫通；及框螺旋彈簧，其將上述框導銷之上述基部之周圍及上述貫通孔之周圍朝上述流路方向之反向彈推。藉此解決了上述問題。 The gate valve of the present invention is a gate valve for dividing flow paths, and includes: a valve box inserted into the flow path and having a first opening and a second opening that face each other and communicate with each other to form the flow path; and a valve body located in the flow path. The hollow part in the valve box can open and close the flow path; the rotating shaft supports the valve body so that it can rotate between the retracted position in the hollow part and the valve opening shielding position; It has an axis extending in the direction of the flow path, and is fixed to the valve body; a rotary drive part, which can rotate and drive the valve body; a neutral valve part, which constitutes the valve body; a movable valve frame part, which can be relative to the valve body. The neutral valve part is arranged on the valve body so as to move in the direction of the flow path; a valve frame push-up part connects the neutral valve part and the movable valve frame part; and a movable valve plate part can be relative to the movable valve The frame part is arranged on the valve body by moving the position of the partition plate sliding sealing part in the direction of the flow path; the valve plate pushing part is connected to the movable valve frame part and the movable valve plate part; the valve box pushing part is The movable valve frame portion at the valve opening shielding position can be moved to the valve closing position in contact with the peripheral edge of the first opening portion, and a driving portion drives the valve box springing portion. The valve frame springing part has: a frame guide pin, which has a base part fixed on the movable valve frame part, and is erected in the direction of the flow path to limit the sliding direction of the neutral valve part and the movable valve frame part; a through hole , which is arranged on the above-mentioned neutral valve portion, and is slidably penetrated by the position close to the front end of the above-mentioned frame guide pin; Reverse bounce in the direction of the road. Thereby, the above problem is solved.

於本發明之閘閥中，上述閥框彈推部亦可於上述可動閥框部之周向以相互均等之距離隔開設置複數個。 In the gate valve of the present invention, a plurality of the valve frame pushing parts may also be arranged at equal distances from each other in the circumferential direction of the movable valve frame part.

於本發明中，複數個上述閥框彈推部亦可在通過上述可動閥板部之中心之同一直線上配置於與上述中心對向之位置。 In the present invention, a plurality of the valve frame pushing parts may be arranged at positions opposite to the center on the same straight line passing through the center of the movable valve plate part.

於本發明之閘閥中，亦可於上述閥框彈推部之上述貫通孔，朝向上述框導銷之上述基部，設置包圍上述框導銷之周圍且限制滑動位置之限制筒。 In the gate valve of the present invention, a restricting cylinder surrounding the frame guide pin and restricting the sliding position may be provided in the through hole of the valve frame push portion toward the base portion of the frame guide pin.

又，於本發明之閘閥中，亦可於上述閥框彈推部之上述框導銷設置受壓部，該受壓部於上述基部擴徑，且上述受壓部承受上述框螺旋彈簧之 彈推力。 Furthermore, in the gate valve of the present invention, a pressure-receiving portion may be provided on the frame guide pin of the valve frame spring portion, the pressure-receiving portion is enlarged in diameter at the base portion, and the pressure-receiving portion receives the force of the frame coil spring. elastic thrust.

於本發明之閘閥中，亦可為上述閥板彈推部具有限制上述可動閥框部與上述可動閥板部之滑動方向的板導銷，且上述板導銷與上述閥框彈推部之上述框導銷平行配置。 In the gate valve of the present invention, the valve plate pushing portion may also have a plate guide pin for restricting the sliding direction of the movable valve frame portion and the movable valve plate portion, and the connection between the plate guide pin and the valve frame pushing portion may be The above-mentioned frame guide pins are arranged in parallel.

又，於本發明之閘閥中，上述閥板彈推部亦可在通過上述閥框彈推部與上述可動閥板部之中心之直線上配置於較上述閥框彈推部更接近上述中心之位置。 In addition, in the gate valve of the present invention, the valve plate pushing portion can also be disposed at a position closer to the center than the valve frame pushing portion on a straight line passing through the center of the valve frame pushing portion and the movable valve plate portion. Location.

於本發明之閘閥中，亦可為上述閥箱彈推部具有可按壓上述可動閥框部之可動部，且上述可動部之軸線與上述閥框彈推部之上述框導銷之軸線一致地配置。 In the gate valve of the present invention, the valve box pushing portion may have a movable portion that can press the movable valve frame portion, and the axis of the movable portion is consistent with the axis of the frame guide pin of the valve frame pushing portion. configuration.

本發明之閘閥係分隔流路之閘閥，且具備：閥箱，其***上述流路，且具有相互對向且連通而形成上述流路之第1開口部及第2開口部；閥體，其位於上述閥箱內之中空部內並可開放及閉塞上述流路；旋轉軸，其支持上述閥體使之可於上述中空部內之退避位置與閥開口遮蔽位置之間旋轉，且具有於流路方向延伸之軸線，並固定於上述閥體；旋轉驅動部，其可旋轉驅動上述閥體；中立閥部，其構成上述閥體；可動閥框部，其可相對於上述中立閥部於上述流路方向進行位置移動地設置於上述閥體；閥框彈推部，其連接上述中立閥部與上述可動閥框部；可動閥板部，其可相對於上述可動閥框部介隔板滑動密封部於上述流路方向進行位置移動地設置於上述閥體；閥板彈推部，其連接上述可動閥框部與上述可動閥板部；閥箱彈推部，其設置於上述閥箱，並可將上述閥開口遮蔽位置之上述可動閥框部向與上述第1開口部之周緣接觸之閥閉塞位 置移動；及驅動部，其驅動上述閥箱彈推部。上述閥框彈推部具有：框導銷，其具有固定於上述可動閥框部之基部，且立設於上述流路方向而限制上述中立閥部與上述可動閥框部之滑動方向；貫通孔，其設置於上述中立閥部，且供上述框導銷之接近前端之位置可滑動地貫通；及框螺旋彈簧，其將上述框導銷之上述基部之周圍及上述貫通孔之周圍朝上述流路方向之反向彈推。 The gate valve of the present invention is a gate valve for dividing flow paths, and includes: a valve box inserted into the flow path and having a first opening and a second opening that face and communicate with each other to form the flow path; and a valve body, which The valve body is located in the hollow part of the valve box and can open and close the flow path; a rotating shaft supports the valve body so that it can rotate between the retracted position in the hollow part and the valve opening shielding position, and has a direction of the flow path. An extending axis is fixed on the valve body; a rotary drive part can rotate the valve body; a neutral valve part constitutes the valve body; a movable valve frame part can be connected to the flow path relative to the neutral valve part The valve frame pushes part, which connects the neutral valve part and the movable valve frame part; the movable valve plate part, which can slide the sealing part relative to the movable valve frame part through the partition plate. The valve body is arranged to move in the direction of the flow path; the valve plate push portion is connected to the movable valve frame portion and the movable valve plate portion; the valve box push portion is arranged on the valve box and can be The movable valve frame portion at the valve opening shielding position is moved to the valve closing position in contact with the peripheral edge of the first opening portion and a driving part, which drives the above-mentioned valve box springing and pushing part. The valve frame springing part has: a frame guide pin, which has a base part fixed on the movable valve frame part, and is erected in the direction of the flow path to limit the sliding direction of the neutral valve part and the movable valve frame part; a through hole , which is arranged on the above-mentioned neutral valve portion, and is slidably penetrated by the position close to the front end of the above-mentioned frame guide pin; Reverse bounce in the direction of the road.

藉此，藉由上述閥框彈推部，可使可動閥框部相對於中立閥部於流路方向滑動。 Thereby, the movable valve frame portion can be slid in the direction of the flow path relative to the neutral valve portion by the valve frame pushing portion.

具體而言，於藉由上述閥體閉塞上述開口部之閉閥動作中，藉由上述閥箱彈推部按壓之可動閥框部於流路方向移動。此時，上述閥框彈推部限制可動閥框部相對於中立閥部之移動方向。 Specifically, in the valve closing operation in which the opening portion is closed by the valve body, the movable valve frame portion pressed by the valve box push portion moves in the direction of the flow path. At this time, the valve frame pushing portion restricts the moving direction of the movable valve frame portion relative to the neutral valve portion.

又，於解除上述閥箱彈推部之按壓之開閥動作中，藉由上述閥框彈推部之彈推力，可動閥框部朝流路方向中央位置移動。 In addition, during the valve opening operation of releasing the pressing force of the valve box spring portion, the movable valve box portion moves toward the center position in the flow path direction by the spring force of the valve box spring portion.

於該等閉閥動作及開閥動作時，可藉由上述閥框彈推部，限制可動閥框部相對於中立閥部之移動方向。其結果，可防止閥體之姿勢傾斜。因此，可抑制閥體所產生之變形。 During the valve closing action and the valve opening action, the moving direction of the movable valve frame portion relative to the neutral valve portion can be restricted by the valve frame pushing portion. As a result, the posture of the valve body can be prevented from being inclined. Therefore, deformation of the valve body can be suppressed.

藉由該等，即使閘閥之開口徑大型化亦容易維持、或提高密封性。 By this, even if the opening diameter of the gate valve is enlarged, it is easy to maintain or improve the sealing performance.

再者，於開閥動作時，將可動閥框部自上述開口部隔開而開放上述開口部。此時，上述閥框彈推部可為了將貼附於開口部周圍之閥箱內表面之設置於可動閥框部之O形環等密封構件剝離並隔開而具有充分之彈推 力。同時，可防止閥體之姿勢傾斜。 Furthermore, during the valve opening operation, the movable valve frame portion is separated from the opening portion to open the opening portion. At this time, the valve frame push portion may have sufficient push force for peeling off and separating a sealing member such as an O-ring provided on the movable valve frame portion attached to the inner surface of the valve box around the opening. force. At the same time, the posture of the valve body can be prevented from tilting.

藉由該等，可提高閥動作確實性。 By doing so, the reliability of the valve operation can be improved.

本發明之閘閥將上述閥框彈推部於上述可動閥框部之周向以相互均等之距離隔開設置複數個。 In the gate valve of the present invention, a plurality of the valve frame pushing portions are arranged at equal distances from each other in the circumferential direction of the movable valve frame portion.

藉此，於使可動閥框部自抵接於開口部之狀態隔開之開閥動作時，於可動閥框部之周向上以均等間隔配置之上述閥框彈推部可使均等之彈推力作用於可動閥框部。藉此，於開閥動作時不會成為可動閥框部相對於中立閥部傾斜之姿勢，可使可動閥框部自開口部隔開。 Thereby, in the valve opening operation in which the movable valve frame portion is separated from the state in which the movable valve frame portion is in contact with the opening portion, the valve frame push portions arranged at equal intervals in the circumferential direction of the movable valve frame portion can provide an equal push force. Acts on the movable valve frame. Thereby, the movable valve frame portion can be separated from the opening portion without the movable valve frame portion being inclined relative to the neutral valve portion during the valve opening operation.

因此，可抑制閥體所產生之變形。 Therefore, deformation of the valve body can be suppressed.

又，即使閘閥之開口徑大型化亦容易維持、或提高密封性。 In addition, even if the opening diameter of the gate valve is enlarged, it is easy to maintain or improve the sealing performance.

於本發明之閘閥中，複數個上述閥框彈推部於通過上述可動閥板部之中心之同一直線上配置於相對於上述中心對向之位置。 In the gate valve of the present invention, a plurality of the valve frame push portions are arranged at positions opposite to the center on the same straight line passing through the center of the movable valve plate portion.

藉此，於使可動閥框部自抵接於開口部之狀態隔開之開閥動作時，於可動閥框部之徑向上配置於相對於中心對向之位置之上述閥框彈推部可於直徑之兩端位置使均等之彈推力作用於可動閥框部。 Thereby, in the valve opening operation in which the movable valve frame portion is separated from the state in which the movable valve frame portion is in contact with the opening portion, the valve frame pushing portion arranged at the position opposite to the center in the radial direction of the movable valve frame portion can be At both ends of the diameter, an equal spring force acts on the movable valve frame.

藉此，於開閥動作時不會成為可動閥框部相對於中立閥部傾斜之姿勢，可使可動閥框部自開口部隔開。因此，可抑制閥體所產生之變形。 Thereby, the movable valve frame portion can be separated from the opening portion without the movable valve frame portion being inclined relative to the neutral valve portion during the valve opening operation. Therefore, deformation of the valve body can be suppressed.

又，即使閘閥之開口徑大型化亦容易維持、或提高密封性。 In addition, even if the opening diameter of the gate valve is enlarged, it is easy to maintain or improve the sealing performance.

另，可於周向以等間隔設置複數集於直徑之兩端配置有上述閥框彈推部之集(一組)。 In addition, a plurality of sets (one set) of the valve frame pushing parts may be arranged at equal intervals in the circumferential direction and arranged at both ends of the diameter.

於本發明之閘閥，於上述閥框彈推部之上述貫通孔，朝向上述框導銷之上述基部，設置包圍上述框導銷之周圍限制滑動位置之限制筒。 In the gate valve of the present invention, the through hole of the valve frame pusher portion faces the base portion of the frame guide pin, and a restricting cylinder is provided to restrict the sliding position around the frame guide pin.

藉此，限制筒可限制於限制筒之內部滑動之框導銷之滑動方向，防止框導銷傾斜。因此，可防止藉由框導銷連接之中立閥部與可動閥框部於滑動時傾斜。 Thereby, the restricting cylinder can be restricted to the sliding direction of the frame guide pin which slides inside the restricting cylinder, so as to prevent the frame guide pin from tilting. Therefore, it is possible to prevent the neutral valve portion and the movable valve frame portion being connected by the frame guide pin from tilting when sliding.

該姿勢控制於以下之情形時有效。 This posture control is valid in the following situations.

(1)於閉閥動作中，被上述閥箱彈推部按壓，可動閥框部相對於中立閥部於流路方向移動之情形。 (1) During the valve closing operation, the movable valve frame portion is moved in the direction of the flow path relative to the neutral valve portion by being pressed by the valve box push portion.

(2)於開閥動作中，解除上述閥箱彈推部之按壓，藉由上述閥框彈推部之彈推力，可動閥框部相對於中立閥部於流路方向移動之情形。 (2) During the valve opening operation, the pressing of the valve box springing portion is released, and the movable valve frame portion moves in the direction of the flow path relative to the neutral valve portion by the springing force of the valve frame springing portion.

(3)於閥體之擺動運動時，旋轉力矩於與框導銷之軸向交叉之方向作用於可動閥框部與中立閥部之間之情形。 (3) When the valve body swings, the rotational moment acts between the movable valve frame portion and the neutral valve portion in the direction intersecting the axial direction of the frame guide pin.

(4)包含上述，閥體之姿勢變化之方向之力作用於上述閥箱彈推部之情形。 (4) Including the above, the force in the direction of the posture change of the valve body acts on the above-mentioned valve box spring push portion.

藉由該等，可抑制閥體所產生之變形。 By doing so, the deformation of the valve body can be suppressed.

又，即使閘閥之開口徑大型化亦容易維持、或提高密封性。 In addition, even if the opening diameter of the gate valve is enlarged, it is easy to maintain or improve the sealing performance.

又，於本發明之閘閥中，於上述閥框彈推部之上述框導銷，設置於上述基部擴徑之受壓部，且上述受壓部承受上述框螺旋彈簧之彈推力。 Furthermore, in the gate valve of the present invention, the frame guide pin of the valve frame urging portion is provided on the pressure receiving portion of the base portion enlarged in diameter, and the pressure receiving portion receives the urging force of the frame coil spring.

該情形時，上述框螺旋彈簧與上述框導銷之基部之上述受壓部之周 圍及上述貫通孔之周圍接觸，於上述框導銷之附近，將上述中立閥部與上述可動閥框部於框導銷之軸向朝相互隔開之方向彈推。 In this case, the circumference of the pressure-receiving portion of the base portion of the frame coil spring and the frame guide pin is Contact with the periphery of the through hole, and in the vicinity of the frame guide pin, push the neutral valve portion and the movable valve frame portion in the direction of spaced apart from each other in the axial direction of the frame guide pin.

藉此，可於可動閥框部相對於中立閥部向開口部移動時，藉由框螺旋彈簧之彈推力，將上述可動閥框部沿框導銷之軸向朝接近於上述中立閥部之方向移動。 Thereby, when the movable valve frame portion moves toward the opening portion relative to the neutral valve portion, the movable valve frame portion can be moved along the axial direction of the frame guide pin toward the position close to the neutral valve portion by the elastic force of the frame coil spring. direction move.

又，可藉由閥箱彈推部按壓可動閥框部，將可動閥框部相對於位於流路方向之中央之中立閥部，沿框導銷之軸線方向，向開口部移動。 In addition, the movable valve frame portion can be moved toward the opening along the axis direction of the frame guide pin relative to the neutral valve portion located at the center of the flow path direction by pressing the movable valve frame portion by the valve box push portion.

藉此，可抑制閥體所產生之變形。 Accordingly, deformation of the valve body can be suppressed.

又，即使閘閥之開口徑大型化亦容易維持、或提高密封性。 In addition, even if the opening diameter of the gate valve is enlarged, it is easy to maintain or improve the sealing performance.

限制可動閥框部之移動方向之上述框導銷、與承受框螺旋彈簧之彈推力之上述受壓部設為一體。因此，可以一零件進行框螺旋彈簧之彈推力之承受、與可動閥框部與中立閥部之位置限制，且可削減維護等中卸除上述閥框彈推部所耗費之作業時間與作業步驟。 The frame guide pin for restricting the moving direction of the movable valve frame portion and the pressure receiving portion for receiving the elastic thrust of the frame coil spring are integrally formed. Therefore, the elastic force of the frame coil spring and the position restriction of the movable valve frame portion and the neutral valve portion can be carried out with one part, and the work time and work for removing the valve frame elastic portion during maintenance and the like can be reduced. step.

本發明之閘閥之上述閥板彈推部具有限制上述可動閥框部與上述可動閥板部之滑動方向之板導銷，且上述板導銷與上述閥框彈推部之上述框導銷平行配置。 The valve plate push portion of the gate valve of the present invention has a plate guide pin for restricting the sliding direction of the movable valve frame portion and the movable valve plate portion, and the plate guide pin is parallel to the frame guide pin of the valve frame push portion configuration.

藉此，於藉由上述閥板彈推部，可動閥板部相對於可動閥框部滑動時，因限制可動閥板部之移動方向之板導銷與框導銷平行，故將可動閥板部與可動閥框部之移動方向限制於與流路方向平行之方向。因此，可抑制因可動閥板部之移動，於與流路方向傾斜之方向對可動閥框部作用應力或力矩。 Therefore, when the movable valve plate portion slides relative to the movable valve frame portion by the valve plate pushing portion, the plate guide pin that restricts the moving direction of the movable valve plate portion is parallel to the frame guide pin, so that the movable valve plate The moving direction of the valve frame portion and the movable valve frame portion is limited to a direction parallel to the direction of the flow path. Therefore, it is possible to suppress the action of stress or moment on the movable valve frame portion in a direction inclined to the direction of the flow path due to the movement of the movable valve plate portion.

因此，可防止起因於可動閥板部與可動閥框部之移動，對可動閥框部與中立閥部之移動造成影響。 Therefore, the movement of the movable valve plate portion and the movable valve frame portion can be prevented from affecting the movement of the movable valve frame portion and the neutral valve portion.

又，即使於閥體相對於流路方向傾斜等閥體之姿勢變化之情形時，因板導銷與框導銷平行，故亦可平行地維持可動閥板部與可動閥框部之移動方向、與可動閥框部與中立閥部之移動方向。因此，不會對該等可動閥板部、可動閥框部、及中立閥部之移動造成障礙。 In addition, even when the posture of the valve body is changed, such as the valve body is inclined relative to the direction of the flow path, since the plate guide pin and the frame guide pin are parallel, the moving direction of the movable valve plate portion and the movable valve frame portion can be maintained in parallel. , and the moving direction of the movable valve frame part and the neutral valve part. Therefore, the movement of the movable valve plate portion, the movable valve frame portion, and the neutral valve portion is not hindered.

尤其，即使於藉由上述閥箱彈推部，可動閥框部閉塞/開放開口部之情形時，亦維持板導銷與框導銷之平行。藉此，即使於流路方向之差壓成為反向之逆壓狀態下，可動閥板部之動作亦不會對可動閥框部與中立閥部之移動造成不良影響。 In particular, even when the movable valve frame portion is closed/opened by the valve box pushing portion, the parallelism between the plate guide pin and the frame guide pin is maintained. Accordingly, even in a reverse pressure state in which the differential pressure in the direction of the flow path is reversed, the movement of the movable valve plate portion does not adversely affect the movement of the movable valve frame portion and the neutral valve portion.

藉此，可抑制閥體所產生之變形。 Accordingly, deformation of the valve body can be suppressed.

又，即使閘閥之開口徑大型化亦容易維持、或提高密封性。 In addition, even if the opening diameter of the gate valve is enlarged, it is easy to maintain or improve the sealing performance.

又，本發明之閘閥將上述閥板彈推部於通過上述閥框彈推部與上述可動閥板部之中心之直線上配置於較上述閥框彈推部更接近於上述中心之位置。 In addition, in the gate valve of the present invention, the valve plate push portion is disposed at a position closer to the center than the valve frame push portion on a straight line passing through the center of the valve frame push portion and the movable valve plate portion.

藉此，可使上述閥板彈推部、上述閥框彈推部、及上述閥箱彈推部於可動閥框部之周向接近，容易減小需要強度、剛性之部分，並進行構成閘閥之其他部分之輕量化。 In this way, the valve plate push portion, the valve frame push portion, and the valve box push portion can be approached in the circumferential direction of the movable valve frame portion, and the parts requiring strength and rigidity can be easily reduced to form a gate valve. Lightweight of other parts.

又，即使於藉由上述閥箱彈推部按壓可動閥框部之情形、或閥體相對於流路方向傾斜等閥體之姿勢變化之情形時，因板導銷與框導銷平行， 故亦可平行地維持可動閥板部與可動閥框部之移動方向、與可動閥框部與中立閥部之移動方向。 In addition, even when the movable valve frame portion is pressed by the valve box push portion, or the valve body is inclined with respect to the direction of the flow path, etc., the posture of the valve body is changed, since the plate guide pins are parallel to the frame guide pins, Therefore, the moving directions of the movable valve plate portion and the movable valve frame portion and the moving directions of the movable valve frame portion and the neutral valve portion can also be maintained in parallel.

因此，不會對該等可動閥板部、可動閥框部、及中立閥部之移動造成障礙。 Therefore, the movement of the movable valve plate portion, the movable valve frame portion, and the neutral valve portion is not hindered.

藉此，可抑制閥體所產生之變形。 Accordingly, deformation of the valve body can be suppressed.

又，即使閘閥之開口徑大型化亦容易維持、或提高密封性。 In addition, even if the opening diameter of the gate valve is enlarged, it is easy to maintain or improve the sealing performance.

於本發明之閘閥中，上述閥箱彈推部具有可按壓上述可動閥框部之可動部，且上述可動部之軸線與上述閥框彈推部之上述框導銷之軸線一致配置。此處，可動部例如為伸縮桿。 In the gate valve of the present invention, the valve box springing portion has a movable portion capable of pressing the movable valve frame portion, and the axis of the movable portion is aligned with the axis of the frame guide pin of the valve frame springing portion. Here, the movable part is, for example, a telescopic rod.

藉此，於藉由上述閥箱彈推部，可動閥框部閉塞開口部之情形時，因閥箱彈推部之伸縮桿(可動部)按壓限制可動閥框部之位置移動之框導銷，故藉由可動部之按壓力，不會於可動閥框部之移動方向上產生力矩。 Thereby, when the movable valve frame portion blocks the opening by the valve box push portion, the telescopic rod (movable portion) of the valve box push portion presses the frame guide pin that restricts the position movement of the movable valve frame portion , so no moment will be generated in the moving direction of the movable valve frame due to the pressing force of the movable part.

因此，因於可動部及導銷之軸線傾斜之方向之力(即，於軸線方向產生之力之成分、與於相對於軸線之垂直方向產生之力之成分之合力)不作用於可動閥框部，故可抑制可動閥框部所產生之變形。藉此，可提高密封性。 Therefore, the force in the direction in which the axis of the movable portion and the guide pin is inclined (that is, the resultant force of the force component generated in the axis direction and the force component generated in the vertical direction relative to the axis) does not act on the movable valve frame Therefore, the deformation of the movable valve frame portion can be suppressed. Thereby, the sealing property can be improved.

又，即使同時削減使可動閥框部移動之作用力亦可維持動作之確實性。 Furthermore, even if the force for moving the movable valve frame portion is simultaneously reduced, the certainty of the operation can be maintained.

藉此，容易使閘閥之開口徑大型化。 Thereby, it becomes easy to enlarge the opening diameter of a gate valve.

再者，於閥閉塞時，即使於設置於可動閥框部之O形環等密封構件貼附於開口部周圍之閥箱內表面之情形時，因可使閥箱彈推部按壓可動閥框部之位置接近於O形環等密封構件，故亦可容易地剝離貼附於閥箱內表面之O形環。 Furthermore, when the valve is closed, even when a sealing member such as an O-ring provided on the movable valve frame is attached to the inner surface of the valve box around the opening, the valve box pusher can press the movable valve frame. The position of the part is close to sealing members such as O-rings, so the O-rings attached to the inner surface of the valve box can also be easily peeled off.

又，於設為在上述框導銷之上述基部設置受壓部，且上述受壓部承受上述螺旋彈簧之彈推力之構成之情形時，可設為受壓部由閥箱彈推部之伸縮桿(可動部)按壓之構成。藉此，可將承受位置限制力、螺旋彈簧之反力、及伸縮桿(可動部)之按壓力之零件作為一零件，設為強度及剛性較強之材質。 In addition, in the case where a pressure-receiving portion is provided on the base portion of the frame guide pin, and the pressure-receiving portion is subjected to the elastic force of the coil spring, the pressure-receiving portion can be extended and contracted by the valve box elastic portion. The structure of the rod (movable part) pressing. In this way, the parts that bear the position restriction force, the reaction force of the coil spring, and the pressing force of the telescopic rod (movable part) can be used as one part, and can be made of a material with strong strength and rigidity.

該情形時，可藉由將可動閥板部等需要輕量化之零件設為較輕之材質，將需要強度之框導銷、板導銷、限制筒、受壓部等設為強度及剛性較強之材質，而同時實現輕量化與強度維持。 In this case, the movable valve plate and other parts that need to be lightweight can be made of lighter materials, and the frame guide pins, plate guide pins, restricting cylinders, and pressure receiving parts that require strength can be made of relatively strong and rigid parts. Strong material, while achieving lightweight and strength maintenance.

藉由該等，可抑制閥體所產生之變形。 By doing so, the deformation of the valve body can be suppressed.

又，即使閘閥之開口徑大型化亦容易維持、或提高密封性。 In addition, even if the opening diameter of the gate valve is enlarged, it is easy to maintain or improve the sealing performance.

根據本發明，可奏效可提供一種實現開口徑之大型化與輕量化，且提高動作確實性之閘閥之效果。 According to the present invention, it is possible to effectively provide a gate valve that realizes the enlargement and weight reduction of the opening diameter and improves the operation reliability.

5:閥體 5: valve body

10:閥箱 10: Valve box

10A:閥箱內表面 10A: Inner surface of valve box

10B:閥箱內表面 10B: Inner surface of valve box

11:中空部 11: Hollow part

12a:第1開口部 12a: 1st opening

12b:第2開口部 12b: Second opening

20:旋轉軸 20: Rotary axis

21:旋轉驅動部 21: Rotary drive part

30:中立閥部 30: Neutral valve department

30a:圓形部 30a: round part

30b:旋轉部 30b: Rotary part

30c:圓凸緣部 30c: Round flange part

30cm:凹部 30cm: Recess

30g:貫通孔 30g: through hole

40:可動閥部 40: Movable valve part

50:可動閥板部 50: Movable valve plate part

50b:滑動面(板滑動密封部) 50b: Sliding surface (plate sliding seal part)

50c:內周曲柄部 50c: Inner peripheral crank part

50d:閥板 50d: valve plate

51:對置緩衝件(密封構件) 51: Opposite buffer (sealing member)

51m:槽 51m: slot

52:滑動密封襯墊(滑動密封構件；板滑動密封部) 52: Sliding seal gasket (sliding seal member; plate sliding seal portion)

52m:槽 52m: slot

53:排氣孔 53: exhaust hole

56:外周槽 56: Peripheral groove

58:彈推部孔 58: Pusher hole

58c:底部 58c: Bottom

58f:蓋部 58f: Cover

58f1:固定蓋 58f1: Fixed cover

58g:孔部 58g: hole

59:周槽 59: Week Slot

59a:內周壁 59a: Inner peripheral wall

59b:外周壁 59b: Peripheral wall

59c:底部 59c: Bottom

59d:彎曲部 59d: Bend

59e:彎曲部 59e: Bend

60:可動閥框部 60: Movable valve frame

60b:滑動面 60b: Sliding surface

60c:外周曲柄部 60c: Outer peripheral crank part

60d:內框板 60d: inner frame plate

60e:外框板 60e: Outer frame plate

60sb:下表面 60sb: lower surface

61:閥框密封襯墊(密封構件) 61: Valve frame sealing gasket (sealing member)

68:彈推部孔 68: spring pusher hole

70:閥箱彈推部(推壓缸體) 70: Valve box pusher (push cylinder)

71:油壓驅動部(固定部) 71: Hydraulic drive part (fixed part)

72:伸縮桿(可動部) 72: Telescopic rod (movable part)

72a:前端部 72a: Front end

75:密封構件(O形環) 75: Sealing member (O-ring)

80:閥板彈推部(保持彈簧) 80: Valve plate pusher (holding spring)

81:板導銷 81: Plate guide pins

81a:前端 81a: Front end

81b:基部 81b: base

82:螺旋彈簧(保持彈簧) 82: Coil spring (holding spring)

82a:內螺旋彈簧 82a: Inner coil spring

82b:外螺旋彈簧 82b: Outer coil spring

83:受壓部 83: Pressurized part

85:限制筒 85: Limiting barrel

85a:襯套 85a: Bushing

85b,85c:排氣孔 85b, 85c: Air vents

85d:密封構件 85d: Sealing member

90:閥框彈推部(輔助彈簧) 90: Valve frame pusher (auxiliary spring)

91:框導銷 91: Frame guide pin

91a:前端 91a: Front end

91b:基部 91b: base

92:框螺旋彈簧 92: Box Coil Spring

93:受壓部 93: Pressurized part

94:中立間隔物 94: Neutral Spacer

94a:C形環 94a: C-ring

95:限制筒 95: Limiting cylinder

95a:襯套 95a: Bushing

95f:凸緣部 95f: Flange

95g:貫通孔 95g: through hole

100:閘閥 100: Gate valve

700:油壓驅動裝置(油壓驅動機構、驅動部) 700: Hydraulic drive device (hydraulic drive mechanism, drive part)

701:油壓產生部 701: Oil pressure generation part

702:油壓管 702: Oil pressure pipe

705:驅動部 705: Drive Department

706:控制部(控制器) 706: Control Department (Controller)

707:電源 707: Power

800:切換閥(滑閥) 800: Switching valve (slide valve)

B1:往復方向 B1: Reciprocating direction

B2:往復方向 B2: Reciprocating direction

F1:箭頭 F1: Arrow

H:流路 H: flow path

O:中心 O: Center

R01:方向 R01: Direction

R02:方向 R02: Direction

圖1係顯示本發明之第1實施形態之閘閥之構成之與流路正交之剖視 圖，顯示閥體之退避位置與閥開口遮蔽位置。 Fig. 1 is a cross-sectional view perpendicular to the flow path showing the structure of the gate valve according to the first embodiment of the present invention The figure shows the retracted position of the valve body and the valve opening shielding position.

圖2係顯示本發明之第1實施形態之閘閥之構成之沿流路之剖視圖，顯示閥體之閥開口遮蔽位置。 2 is a cross-sectional view along the flow path showing the structure of the gate valve according to the first embodiment of the present invention, showing the valve opening shielding position of the valve body.

圖3係顯示本發明之第1實施形態之閘閥之閥體之緣部之沿流路之放大剖視圖。 3 is an enlarged cross-sectional view along the flow path showing the edge of the valve body of the gate valve according to the first embodiment of the present invention.

圖4係自與流路正交之方向觀察本發明之第1實施形態之閘閥之閥體之俯視圖。 4 is a plan view of the valve body of the gate valve according to the first embodiment of the present invention as viewed from a direction perpendicular to the flow path.

圖5係顯示本發明之第1實施形態之閘閥之閥箱彈推部、閥框彈推部及閥板彈推部之沿流路之放大剖視圖。 5 is an enlarged cross-sectional view along the flow path showing the valve box springing portion, the valve frame springing portion and the valve plate springing portion of the gate valve according to the first embodiment of the present invention.

圖6係顯示本發明之第1實施形態之閘閥之油壓驅動裝置及閥箱彈推部之說明圖。 FIG. 6 is an explanatory view showing the hydraulic drive device and the valve box pusher of the gate valve according to the first embodiment of the present invention.

圖7係顯示本發明之第1實施形態之閘閥之閥體之緣部之沿流路之放大剖視圖，顯示可動閥框部之閥閉塞狀態。 7 is an enlarged cross-sectional view showing the edge of the valve body of the gate valve according to the first embodiment of the present invention along the flow path, showing the valve-closed state of the movable valve frame.

圖8係顯示圖7之閥箱彈推部、閥框彈推部及閥板彈推部之沿流路之放大剖視圖。 FIG. 8 is an enlarged cross-sectional view of the valve box springing portion, the valve frame springing portion and the valve plate springing portion of FIG. 7 along the flow path.

圖9係顯示本發明之第1實施形態之閘閥之閥體之緣部之沿流路之放大剖視圖，顯示利用可動閥板部消除逆壓之閥閉塞狀態。 9 is an enlarged cross-sectional view showing the edge of the valve body of the gate valve according to the first embodiment of the present invention along the flow path, showing the closed state of the valve in which the back pressure is eliminated by the movable valve plate part.

圖10係顯示圖9之閥箱彈推部、閥框彈推部及閥板彈推部之沿流路之放大剖視圖。 FIG. 10 is an enlarged cross-sectional view of the valve box springing portion, the valve frame springing portion, and the valve plate springing portion of FIG. 9 along the flow path.

以下，基於圖式說明本發明之第1實施形態之閘閥。 Hereinafter, the gate valve according to the first embodiment of the present invention will be described based on the drawings.

又，於以下之說明所使用之各圖中，為了將各構成要件設為於圖式 上可辨識之程度之大小，使各構成要件之尺寸及比例與實物適當地不同。 In addition, in each drawing used in the following description, in order to set each constituent element in the drawing The size and proportion of each constituent element are appropriately different from the actual object.

本發明之技術範圍並不限定於以下所述之實施形態，可於不脫離本發明之主旨之範圍內施加各種變更。 The technical scope of the present invention is not limited to the embodiments described below, and various modifications can be added without departing from the gist of the present invention.

圖1係顯示本實施形態之閘閥之與流路正交之剖視圖。 FIG. 1 is a cross-sectional view showing the gate valve of the present embodiment orthogonal to the flow path.

圖2係顯示本實施形態之閘閥之沿流路之剖視圖。 FIG. 2 is a cross-sectional view showing the gate valve of the present embodiment along the flow path.

圖3係顯示本實施形態之閘閥之周緣部之沿流路之放大剖視圖。 FIG. 3 is an enlarged cross-sectional view along the flow path showing the peripheral portion of the gate valve of the present embodiment.

於圖1~圖3中，符號100為閘閥。 In FIGS. 1 to 3 , reference numeral 100 is a gate valve.

本實施形態之閘閥100分隔連接第1空間與第2空間之流路H，又，開放該分隔狀態。即，閘閥100切換封閉流路H之狀態、與連接第1空間與第2空間之狀態。 The gate valve 100 of the present embodiment partitions the flow path H connecting the first space and the second space, and opens the partitioned state. That is, the gate valve 100 switches between a state in which the flow path H is closed and a state in which the first space and the second space are connected.

閘閥100如圖1、圖2所示，具備閥箱10、中空部11、閥體5、旋轉軸20、旋轉驅動部21、閥箱彈推部(推壓缸體)70、閥板彈推部(保持彈簧)80、閥框彈推部90、及油壓驅動裝置(油壓驅動機構、驅動部)700。 As shown in FIG. 1 and FIG. 2 , the gate valve 100 includes a valve box 10 , a hollow portion 11 , a valve body 5 , a rotating shaft 20 , a rotation driving portion 21 , a valve box springing portion (pressing cylinder) 70 , and a valve plate springing part (holding spring) 80 , valve frame pushing part 90 , and hydraulic drive device (hydraulic drive mechanism, drive part) 700 .

於閥箱10之內部形成中空部11。閥箱10藉由具有中空部11之框架構成。 A hollow portion 11 is formed inside the valve box 10 . The valve box 10 is constituted by a frame having a hollow portion 11 .

於閥箱10，以隔著中空部11相互對向之方式設置第1開口部12a及第2開口部12b。 In the valve box 10, the 1st opening part 12a and the 2nd opening part 12b are provided so that it may mutually oppose with the hollow part 11 interposed therebetween.

第1開口部12a至第2開口部12b經由中空部11連通。 The first opening portion 12 a to the second opening portion 12 b communicate through the hollow portion 11 .

自第1開口部12a向第2開口部12b設定有流路H。 The flow path H is set from the 1st opening part 12a to the 2nd opening part 12b.

第1開口部12a與第2開口部12b具有大致同一輪廓。 The first opening 12a and the second opening 12b have substantially the same outline.

第1開口部12a具有圓形輪廓。 The first opening 12a has a circular outline.

第1開口部12a於第1空間露出。 The first opening portion 12a is exposed in the first space.

第2開口部12b具有圓形輪廓。第2開口部12b於第2空間露出。即，閘閥100***至第1空間與第2空間之間。 The second opening 12b has a circular outline. The second opening 12b is exposed in the second space. That is, the gate valve 100 is inserted between the first space and the second space.

另，於以下之說明中，有時將沿該流路H之方向稱為流路H方向。 In addition, in the following description, the direction along this flow path H may be called the flow path H direction.

於中空部11內，配置閥體5。 Inside the hollow portion 11, the valve body 5 is arranged.

閥體5可於閥閉塞位置阻斷第1空間與第2空間。 The valve body 5 can block the first space and the second space at the valve closing position.

閥體5由作為位置切換部之旋轉軸20支持。 The valve body 5 is supported by a rotating shaft 20 as a position switching portion.

旋轉軸20具有與流路H方向大致平行地延伸之軸線。旋轉軸20貫通閥箱10。旋轉軸20可藉由旋轉驅動部21旋轉驅動。 The rotation shaft 20 has an axis extending substantially parallel to the flow path H direction. The rotary shaft 20 penetrates the valve box 10 . The rotating shaft 20 can be rotationally driven by the rotational driving part 21 .

於旋轉軸20，固著有連接構件(未圖示)。 A connecting member (not shown) is fixed to the rotating shaft 20 .

連接構件為例如大致平板狀之構件。連接構件相對於旋轉軸20之一端藉由螺絲等固著。 The connection member is, for example, a substantially flat member. The connecting member is fixed to one end of the rotating shaft 20 by screws or the like.

於旋轉軸20，經由連接構件(未圖示)固定閥體5。 The valve body 5 is fixed to the rotary shaft 20 via a connecting member (not shown).

或，於旋轉軸20，亦可不經由連接構件(未圖示)而直接連接閥體5。 Alternatively, the valve body 5 may be directly connected to the rotary shaft 20 without a connecting member (not shown).

旋轉軸20作為閥體5之位置切換部發揮功能。 The rotating shaft 20 functions as a position switching portion of the valve body 5 .

圖4係顯示本實施形態之閘閥之閥體之自與流路正交之方向觀察之俯視圖。 Fig. 4 is a plan view showing the valve body of the gate valve according to the present embodiment when viewed from a direction orthogonal to the flow path.

閥體5可閉塞第1開口部12a及/或第2開口部12b。 The valve body 5 can block the first opening 12a and/or the second opening 12b.

閥體5於閥閉塞位置與閥開口遮蔽位置與閥開放位置(退避位置)之間動作。 The valve body 5 operates between the valve closing position, the valve opening shielding position, and the valve opening position (retracted position).

閥體5可於退避位置與閥開口遮蔽位置之間旋轉。 The valve body 5 is rotatable between the retracted position and the valve opening shielding position.

於閥閉塞位置，閥體5相對於第1開口部12a及/或第2開口部12b處於閉塞狀態(圖7~圖10)。 At the valve closing position, the valve body 5 is in a closed state with respect to the first opening 12a and/or the second opening 12b ( FIGS. 7 to 10 ).

於閥開放位置(退避位置)，閥體5處於自第1開口部12a及/或第2開口部12b退避之開放狀態(圖1中虛線所示)。 At the valve opening position (retraction position), the valve body 5 is in an open state (shown by the dotted line in FIG. 1 ) retracted from the first opening 12a and/or the second opening 12b.

閥體5由中立閥部30及可動閥部40構成。 The valve body 5 is composed of a neutral valve portion 30 and a movable valve portion 40 .

中立閥部30於相對於旋轉軸20之軸線正交之方向延伸。中立閥部30以包含於與相對於旋轉軸20之軸線正交之方向平行之面之方式配置。 The neutral valve portion 30 extends in a direction orthogonal to the axis of the rotating shaft 20 . The neutral valve portion 30 is arranged so as to be included in a surface parallel to the direction orthogonal to the axis of the rotation shaft 20 .

中立閥部30如圖1~圖3所示，具有圓形部30a與旋轉部30b。 As shown in FIGS. 1 to 3 , the neutral valve portion 30 has a circular portion 30a and a rotating portion 30b.

圓形部30a設為較第1開口部12a及/或第2開口部12b之輪廓稍大之環狀。 The circular portion 30a is formed into an annular shape slightly larger than the outline of the first opening portion 12a and/or the second opening portion 12b.

於成為圓形部30a之徑向內側之位置，配置可動閥部40。 The movable valve part 40 is arrange|positioned at the position which becomes the radial inner side of the circular part 30a.

圓形部30a之內周以自流路H方向觀察，與第1開口部12a及/或第2開口部12b大致重疊之方式配置。 The inner periphery of the circular part 30a is arrange|positioned so that it may substantially overlap with the 1st opening part 12a and/or the 2nd opening part 12b as seen from the flow path H direction.

旋轉部30b位於旋轉軸20與圓形部30a之間。 The rotating part 30b is located between the rotating shaft 20 and the circular part 30a.

旋轉部30b隨著旋轉軸20之旋轉使圓形部30a旋轉。 The rotating portion 30b rotates the circular portion 30a in accordance with the rotation of the rotating shaft 20 .

旋轉部30b由以旋轉部30b之徑自旋轉軸20向圓形部30a增加之方式延 伸之平板形狀形成。 The rotating part 30b extends from the rotating shaft 20 to the circular part 30a in such a way that the diameter of the rotating part 30b increases. Formed in the shape of an elongated flat plate.

旋轉部30b亦可設為複數條臂自旋轉軸20向圓形部30a延伸之臂形狀。 The rotating part 30b may be set as an arm shape in which a plurality of arms extend from the rotating shaft 20 to the circular part 30a.

該等旋轉軸20及中立閥部30雖相對於閥箱10轉動，但於流路H方向位置不變動。 Although the rotating shaft 20 and the neutral valve portion 30 rotate relative to the valve box 10, their positions in the direction of the flow path H do not change.

圓形部30a與旋轉部30b亦可設為一體。 The circular portion 30a and the rotating portion 30b may be integrally formed.

該情形時，於平板狀之中立閥部30形成嵌合可動閥部40之貫通孔並設為圓形部30a。 In this case, a through hole into which the movable valve portion 40 is fitted is formed in the flat-shaped neutral valve portion 30, and the circular portion 30a is formed.

又，圓形部30a之周向之一部分朝徑向外側延長之部分設為旋轉部30b。 Moreover, the part extended toward the radial direction outer side of a part of the circumferential direction of the circular part 30a is made into the rotating part 30b.

圓形部30a之流路H方向之厚度尺寸形成為與旋轉部30b之流路H方向之厚度尺寸大致相等。 The thickness dimension of the circular portion 30a in the flow path H direction is formed to be substantially equal to the thickness dimension of the rotation portion 30b in the flow path H direction.

於圓形部30a之中立閥部30之徑向內側，周設圓凸緣部30c。 On the inner side in the radial direction of the stand valve portion 30 in the circular portion 30a, a circular flange portion 30c is circumferentially provided.

圓凸緣部30c之流路H方向之厚度尺寸形成為小於圓形部30a之流路H方向之厚度尺寸。 The thickness dimension of the circular flange portion 30c in the flow path H direction is formed to be smaller than the thickness dimension of the circular portion 30a in the flow path H direction.

圓凸緣部30c於圓形部30a之內周面上，周設於流路H方向上接近於第1開口部12a之位置。 The circular flange portion 30c is circumferentially provided on the inner peripheral surface of the circular portion 30a at a position close to the first opening portion 12a in the flow path H direction.

於流路H方向上，稍後敘述之可動閥框部60之外框板60e位於較圓凸緣部30c更接近於第2開口部12b之位置。 In the direction of the flow path H, the outer frame plate 60e of the movable valve frame portion 60 described later is positioned closer to the second opening portion 12b than the circular flange portion 30c.

圓凸緣部30c與稍後敘述之可動閥框部60之外框板60e連接。 The circular flange portion 30c is connected to an outer frame plate 60e of the movable valve frame portion 60 to be described later.

圓凸緣部30c與外框板60e位於外周曲柄部60c之徑向外側。 The circular flange portion 30c and the outer frame plate 60e are located radially outward of the outer peripheral crank portion 60c.

圓凸緣部30c之位於中立閥部30之徑向之寬度尺寸設定為與外周曲柄部60c之位於可動閥框部60之徑向之寬度尺寸大致相等。 The width dimension of the circular flange portion 30c in the radial direction of the neutral valve portion 30 is set to be approximately equal to the width dimension of the outer peripheral crank portion 60c in the radial direction of the movable valve frame portion 60 .

圓形部30a及圓凸緣部30c相對於外周曲柄部60c周設於成為可動閥框部60之徑向外側之位置。 The circular part 30a and the circular flange part 30c are circumferentially provided at the position which becomes the radial direction outer side of the movable valve frame part 60 with respect to the outer peripheral crank part 60c.

另，圓形部30a與旋轉部30b亦可形成為流路H方向之厚度尺寸相等。 In addition, the circular part 30a and the rotating part 30b may be formed so that the thickness dimension of the flow path H direction may be equal.

可動閥部40設為大致圓板狀。 The movable valve portion 40 is formed in a substantially disk shape.

可動閥部40相對於中立閥部30可變更流路H方向之位置地連接。 The movable valve portion 40 is connected to the neutral valve portion 30 so that the position in the direction of the flow path H can be changed.

即，可動閥部40相對於中立閥部30僅可於厚度方向滑動地連接。 That is, the movable valve portion 40 is connected to the neutral valve portion 30 so as to be slidable only in the thickness direction.

可動閥部40包含可於流路H方向相互移動之2個部分。即，可動閥部40具備可動閥框部60(滑動閥框)與可動閥板部50(對置板)。 The movable valve part 40 includes two parts that can move with each other in the direction of the flow path H. As shown in FIG. That is, the movable valve portion 40 includes a movable valve frame portion 60 (slide valve frame) and a movable valve plate portion 50 (opposing plate).

可動閥框部60設為與圓形部30a大致同心狀之大致圓環狀。 The movable valve frame portion 60 is formed into a substantially annular shape that is substantially concentric with the circular portion 30a.

可動閥框部60位於圓形部30a之徑向之內側。 The movable valve frame portion 60 is located radially inward of the circular portion 30a.

可動閥框部60嵌合於圓形部30a。 The movable valve frame portion 60 is fitted into the circular portion 30a.

可動閥框部60相對於中立閥部30可於流路H方向滑動。 The movable valve frame portion 60 is slidable in the direction of the flow path H relative to the neutral valve portion 30 .

可動閥框部60相對於中立閥部30可於流路H方向進行位置移動。 The movable valve frame portion 60 is movable in the direction of the flow path H with respect to the neutral valve portion 30 .

即，可動閥框部60相對於中立閥部30，可於可進行擺動動作之位 置、與可與第1開口部12a接觸之位置之間移動。 That is, the movable valve frame portion 60 can be in a position capable of swinging with respect to the neutral valve portion 30 . It can be moved between the position and the position where it can come into contact with the first opening 12a.

可動閥框部60具有外周曲柄部60c、內框板60d、及外框板60e。 The movable valve frame portion 60 has an outer peripheral crank portion 60c, an inner frame plate 60d, and an outer frame plate 60e.

可動閥框部60連接內框板60d、外周曲柄部60c、及外框板60e，且徑向上之環狀之剖面形狀設為大致Z字形狀。 The movable valve frame portion 60 is connected to the inner frame plate 60d, the outer peripheral crank portion 60c, and the outer frame plate 60e, and the annular cross-sectional shape in the radial direction is set to a substantially zigzag shape.

外周曲柄部60c形成為具有較第1開口部12a及/或第2開口部12b之輪廓稍大之輪廓之環狀或圓筒狀。 The outer peripheral crank portion 60c is formed in an annular or cylindrical shape having a slightly larger outline than the outline of the first opening portion 12a and/or the second opening portion 12b.

外周曲柄部60c形成於可動閥框部60之外緣之全周。 The outer peripheral crank portion 60c is formed on the entire circumference of the outer edge of the movable valve frame portion 60 .

外周曲柄部60c具有與流路H方向上之中立閥部30之厚度尺寸大致相等之流路H方向之厚度尺寸。 The outer peripheral crank portion 60c has a thickness dimension in the flow passage H direction that is substantially equal to the thickness dimension of the neutral valve portion 30 in the flow passage H direction.

外周曲柄部60c具有滑動面60b。 The outer peripheral crank portion 60c has a sliding surface 60b.

滑動面60b係具有與流路H方向平行之軸線之圓筒面。 The sliding surface 60b is a cylindrical surface having an axis parallel to the flow path H direction.

滑動面60b於外周曲柄部60c之內周面上設置於周向之全長。 The sliding surface 60b is provided on the inner peripheral surface of the outer peripheral crank portion 60c over the entire length in the circumferential direction.

滑動面60b與稍後敘述之可動閥板部50之內周曲柄部50c之滑動面50b可相互滑動地位於對向狀態。 The sliding surface 60b and the sliding surface 50b of the inner peripheral crank portion 50c of the movable valve plate portion 50, which will be described later, are slidably opposed to each other.

於外周曲柄部60c，嵌合有內周曲柄部50c。 In the outer peripheral crank part 60c, the inner peripheral crank part 50c is fitted.

內框板60d周設於外周曲柄部60c之成為可動閥框部60之徑向內側之位置。 The inner frame plate 60d is circumferentially provided at a position that becomes the radially inner side of the movable valve frame portion 60 of the outer peripheral crank portion 60c.

內框板60d周設於外周曲柄部60c之流路H方向上接近第1開口部12a之端部。 The inner frame plate 60d is circumferentially provided at an end portion close to the first opening portion 12a in the direction of the flow path H of the outer peripheral crank portion 60c.

內框板60d形成為與閥板50d平行之凸緣狀。 The inner frame plate 60d is formed in a flange shape parallel to the valve plate 50d.

內框板60d具有小於流路H方向上之外周曲柄部60c之厚度尺寸之的路H方向之厚度尺寸。 The inner frame plate 60d has a thickness dimension in the channel H direction smaller than the thickness dimension of the outer peripheral crank portion 60c in the channel H direction.

稍後敘述之內周曲柄部50c位於較內框板60d於流路H方向更接近於第2開口部12b之位置。 The inner peripheral crank portion 50c, which will be described later, is located closer to the second opening portion 12b in the flow path H direction than the inner frame plate 60d.

內框板60d之位於可動閥框部60之徑向之寬度尺寸設定為與內周曲柄部50c之位於可動閥框部60之徑向之寬度尺寸大致相等。 The width dimension of the inner frame plate 60d in the radial direction of the movable valve frame portion 60 is set to be approximately equal to the width dimension of the inner peripheral crank portion 50c in the radial direction of the movable valve frame portion 60 .

外框板60e周設於外周曲柄部60c之成為可動閥框部60之徑向外側之位置。 The outer frame plate 60e is circumferentially provided at a position which becomes the radially outer side of the movable valve frame portion 60 of the outer peripheral crank portion 60c.

外框板60e周設於外周曲柄部60c之流路H方向之接近於第2開口部12b之端部。 The outer frame plate 60e is circumferentially provided at the end portion close to the second opening portion 12b in the direction of the flow path H of the outer peripheral crank portion 60c.

外框板60e作為較外周曲柄部60c於流路H方向之尺寸更小之突條，周設於外周曲柄部60c之可動閥框部60之徑向外側。 The outer frame plate 60e is a protrusion having a smaller size than the outer crank portion 60c in the direction of the flow path H, and is circumferentially provided on the radially outer side of the movable valve frame portion 60 of the outer crank portion 60c.

圓凸緣部30c位於較外框板60e於流路H方向更接近於第1開口部12a之位置。 The circular flange portion 30c is positioned closer to the first opening portion 12a than the outer frame plate 60e in the flow path H direction.

於外框板60e，如稍後敘述般配置複數個閥框彈推部90。 On the outer frame plate 60e, a plurality of valve frame push portions 90 are arranged as described later.

於外框板60e，配置複數個內置閥框彈推部90之彈推部孔68。 The outer frame plate 60e is provided with a plurality of push-pull holes 68 with built-in valve frame push-pull portions 90 .

於可動閥框部60與中立閥部30之間，配置閥框彈推部(輔助彈簧)90。 Between the movable valve frame portion 60 and the neutral valve portion 30 , a valve frame biasing portion (auxiliary spring) 90 is arranged.

可動閥框部60藉由閥框彈推部(輔助彈簧)90，相對於中立閥部30可變更流路H方向之位置地連接。 The movable valve frame portion 60 is connected to the neutral valve portion 30 so as to be able to change the position in the direction of the flow path H by the valve frame push portion (auxiliary spring) 90 .

可動閥框部60與圓形部30a設為同心狀之雙重圓環。 The movable valve frame portion 60 and the circular portion 30a are formed as concentric double rings.

於可動閥框部60，於與閥箱內表面10A對向(抵接)之表面，周設閥框密封襯墊61。 On the surface of the movable valve frame portion 60 facing (abutting against) the inner surface 10A of the valve box, a valve frame sealing gasket 61 is provided around it.

閥框密封襯墊61配置於形成為圓形之外周曲柄部60c與內框板60d之邊界位置。 The valve frame gasket 61 is arranged at a boundary position between the outer peripheral crank portion 60c and the inner frame plate 60d formed in a circular shape.

閥框密封襯墊61與第1開口部12a之形狀對應而形成為圓環狀。 The valve frame gasket 61 is formed in an annular shape corresponding to the shape of the first opening portion 12a.

閥框密封襯墊61例如設為包含O形環等之密封部。 The valve frame gasket 61 is provided as a sealing portion including an O-ring or the like, for example.

閥框密封襯墊61可密接於位於第1開口部12a之周圍之閥箱內表面10A。 The valve frame gasket 61 can be in close contact with the inner surface 10A of the valve box located around the first opening 12a.

閥框密封襯墊61以同心狀配置於可動閥框部60。 The valve frame packing 61 is concentrically arranged on the movable valve frame portion 60 .

閥框密封襯墊61於閉閥時與成為第1開口部12a之周緣之閥箱內表面10A接觸，並藉由可動閥框部60及閥箱內表面10A按壓。藉此，第1空間與第2空間成為分隔狀態。 The valve frame gasket 61 is in contact with the valve box inner surface 10A which is the periphery of the first opening 12a when the valve is closed, and is pressed by the movable valve frame section 60 and the valve box inner surface 10A. Thereby, the first space and the second space are in a separated state.

閥框密封襯墊61設置於外周曲柄部60c之與第1開口部12a對向之端面。 The valve frame gasket 61 is provided on the end surface of the outer peripheral crank portion 60c facing the first opening portion 12a.

閥框密封襯墊61設置於外周曲柄部60c之接近於最外周之位置。 The valve frame gasket 61 is provided at a position close to the outermost periphery of the outer peripheral crank portion 60c.

可動閥板部50設為具有與圓形部30a大致同心狀之圓形輪廓之板體。 The movable valve plate portion 50 is formed as a plate body having a circular outline substantially concentric with the circular portion 30a.

可動閥板部50嵌合於可動閥框部60之外周曲柄部60c之徑向內側。 The movable valve plate portion 50 is fitted to the radially inner side of the outer peripheral crank portion 60 c of the movable valve frame portion 60 .

即，於成為可動閥板部50之徑向外側之位置，以包圍可動閥板部50之周圍之方式配置可動閥框部60。 That is, the movable valve frame portion 60 is arranged so as to surround the periphery of the movable valve plate portion 50 at a position that becomes the radially outer side of the movable valve plate portion 50 .

可動閥板部50之內周曲柄部50c與可動閥框部60設為同心狀之雙重圓環。 The inner peripheral crank portion 50c of the movable valve plate portion 50 and the movable valve frame portion 60 are formed as concentric double rings.

可動閥板部50相對於可動閥框部60可於流路H方向滑動。 The movable valve plate portion 50 is slidable in the direction of the flow path H relative to the movable valve frame portion 60 .

可動閥板部50相對於可動閥框部60可於流路H方向進行位置移動。 The movable valve plate portion 50 is movable in the direction of the flow path H relative to the movable valve frame portion 60 .

此處，可動閥板部50設為可於以下3個位置之間移動。 Here, the movable valve plate portion 50 is movable between the following three positions.

第1位置係相對於位於可進行擺動動作之位置之可動閥框部60與中立閥部30同樣地可動閥板部50可進行擺動動作之位置。 The first position is a position in which the movable valve plate portion 50 can perform a swinging operation with respect to the movable valve frame portion 60 located at a position capable of swinging operation, similarly to the neutral valve portion 30 .

第2位置係於可動閥框部60位於可與第1開口部12a接觸之位置之情形時，與相對於第1位置之可動閥框部60之可動閥板部50相同之位置。 The second position is the same position as the movable valve plate portion 50 of the movable valve frame portion 60 relative to the first position when the movable valve frame portion 60 is in a position where it can contact the first opening portion 12a.

第3位置係相對於第2位置之可動閥框部60，可動閥板部50可與第2開口部12b接觸之位置。 The third position is a position at which the movable valve plate portion 50 can contact the second opening portion 12b with respect to the movable valve frame portion 60 at the second position.

可動閥板部50具有內周曲柄部50c、與閥板50d。 The movable valve plate portion 50 has an inner peripheral crank portion 50c and a valve plate 50d.

可動閥板部50於閥板50d之與第1開口部12a對向之面之周緣位置周設內周曲柄部50c，且通過直徑之剖面形狀設為大致U字形狀。 The movable valve plate portion 50 is provided with an inner peripheral crank portion 50c around the periphery of the surface of the valve plate 50d facing the first opening portion 12a, and has a substantially U-shaped cross-sectional shape through the diameter.

閥板50d以密閉內周曲柄部50c之徑向內側之方式設置。 The valve plate 50d is provided so as to seal the radially inner side of the inner peripheral crank portion 50c.

閥板50d設為配置於與流路H方向大致正交之方向之平板狀。 The valve plate 50d is formed into a flat plate shape arranged in a direction substantially orthogonal to the direction of the flow path H. As shown in FIG.

內周曲柄部50c形成為環狀或軸向之尺寸較徑向之尺寸短之圓筒狀。 The inner peripheral crank portion 50c is formed in an annular or cylindrical shape whose dimension in the axial direction is shorter than that in the radial direction.

內周曲柄部50c形成於可動閥板部50之外緣之全周。 The inner peripheral crank portion 50c is formed on the entire periphery of the outer edge of the movable valve plate portion 50 .

內周曲柄部50c具有較第1開口部12a及/或第2開口部12b之輪廓稍大之外周輪廓。 The inner peripheral crank portion 50c has an outer peripheral contour slightly larger than that of the first opening portion 12a and/or the second opening portion 12b.

內周曲柄部50c具有較第1開口部12a及/或第2開口部12b之輪廓稍小之內周輪廓。 The inner peripheral crank portion 50c has an inner peripheral contour slightly smaller than that of the first opening portion 12a and/or the second opening portion 12b.

內周曲柄部50c具有小於外周曲柄部60c之厚度尺寸，即流路H方向之尺寸。 The inner peripheral crank portion 50c has a thickness dimension smaller than that of the outer peripheral crank portion 60c, that is, the dimension in the H direction of the flow path.

內周曲柄部50c具有大於閥板50d之厚度尺寸，即流路H方向之尺寸。 The inner peripheral crank portion 50c has a thickness dimension larger than that of the valve plate 50d, that is, a dimension in the direction of the flow path H.

內周曲柄部50c具有滑動面50b。 The inner peripheral crank portion 50c has a sliding surface 50b.

滑動面50b係具有與流路H方向平行之軸線之圓筒面。 The sliding surface 50b is a cylindrical surface having an axis parallel to the flow path H direction.

滑動面50b於內周曲柄部50c之外周面設置於周向之全長。 The sliding surface 50b is provided on the outer peripheral surface of the inner peripheral crank portion 50c over the entire length in the circumferential direction.

內周曲柄部50c與外周曲柄部60c於滑動面50b與滑動面60b接觸之狀態下嵌合。 The inner peripheral crank portion 50c and the outer peripheral crank portion 60c are fitted in a state in which the sliding surface 50b and the sliding surface 60b are in contact with each other.

滑動面50b與可動閥框部60之滑動面60b可相互滑動地位於對向狀態。 The sliding surface 50b and the sliding surface 60b of the movable valve frame portion 60 are slidably located in an opposite state.

於內周曲柄部50c，收納閥板彈推部(保持彈簧)80之彈推部孔58與周槽59交替配置於可動閥板部50之周向。 In the inner peripheral crank portion 50 c, the urging portion holes 58 for accommodating the valve plate urging portion (holding spring) 80 and the peripheral grooves 59 are alternately arranged in the circumferential direction of the movable valve plate portion 50 .

閥板彈推部(保持彈簧)80於可動閥板部50之周向以相互隔開之等間隔設置複數個。 A plurality of valve plate pushing portions (holding springs) 80 are provided at equal intervals from each other in the circumferential direction of the movable valve plate portion 50 .

設置複數個閥板彈推部(保持彈簧)80之部位較佳為3處以上。 The number of locations where the plurality of valve plate pushing parts (holding springs) 80 are provided is preferably three or more.

於本實施形態中，顯示作為相互隔開之閥板彈推部(保持彈簧)80之配置，以自閥板50d之中心O觀察，4個閥板彈推部(保持彈簧)80以相同之角度位置(90度)隔開之方式配置之構成例。 In the present embodiment, the arrangement of the valve plate pushing parts (holding springs) 80 is shown as being spaced apart from each other, and when viewed from the center O of the valve plate 50d, the four valve plate pushing parts (holding springs) 80 have the same arrangement. A configuration example of arrangement in such a way that the angular positions (90 degrees) are spaced apart.

自閥板50d之中心O觀察，閥板彈推部(保持彈簧)80之角度位置以與閥箱彈推部(推壓缸體)70與閥框彈推部90之角度位置重疊之方式構成。 Viewed from the center O of the valve plate 50d, the angular position of the valve plate urging portion (holding spring) 80 is configured to overlap the angular positions of the valve box urging portion (pressing cylinder) 70 and the valve frame urging portion 90 .

彈推部孔58對應於如上述之閥板彈推部(保持彈簧)80之配置，於內周曲柄部50c之周向以等間隔設置4處。 The urging portion holes 58 correspond to the arrangement of the valve plate urging portion (holding spring) 80 as described above, and are provided at four positions at equal intervals in the circumferential direction of the inner peripheral crank portion 50c.

周槽59以連結相鄰之彈推部孔58之間之方式周設於內周曲柄部50c之周向。 The circumferential groove 59 is circumferentially provided in the circumferential direction of the inner circumferential crank portion 50c so as to connect the adjacent pushing portion holes 58 .

彈推部孔58及周槽59於流路H方向之內周曲柄部50c之與第1開口部12a對向之面具有開口。 The push portion hole 58 and the peripheral groove 59 have openings on the surface of the inner peripheral crank portion 50c in the flow path H direction facing the first opening portion 12a.

於內周曲柄部50c，藉由周槽59形成隔著周槽59立設於流路H方向之內周壁59a、外周壁59b、以及內周壁59a及外周壁59b之間之底部59c。 The inner peripheral wall 59a, the outer peripheral wall 59b, and the bottom portion 59c between the inner peripheral wall 59a and the outer peripheral wall 59b are formed by the peripheral groove 59 in the inner peripheral crank portion 50c.

內周壁59a與外周壁59b於流路H方向延伸。 The inner peripheral wall 59a and the outer peripheral wall 59b extend in the flow path H direction.

底部59c於與大致平行於閥板50d之流路H方向正交之方向延伸。 The bottom portion 59c extends in a direction orthogonal to the direction of the flow path H substantially parallel to the valve plate 50d.

內周壁59a於可動閥板部50之徑向上，周設於較周槽59更靠內側。 The inner peripheral wall 59 a is circumferentially disposed more inward than the peripheral groove 59 in the radial direction of the movable valve plate portion 50 .

於周槽59，設置將底部59c之表面(底面)與內周壁59a之表面(側面)之間彎曲連接之彎曲部59d。 The peripheral groove 59 is provided with a curved portion 59d that connects the surface (bottom surface) of the bottom portion 59c and the surface (side surface) of the inner peripheral wall 59a in a curved manner.

於周槽59，設置將底部59c之表面(底面)與外周壁59b之表面(側面)之間彎曲連接之彎曲部59e。 The peripheral groove 59 is provided with a curved portion 59e that connects the surface (bottom surface) of the bottom portion 59c and the surface (side surface) of the outer peripheral wall 59b in a curved manner.

周槽59之底部59c設為較彈推部孔58之底部58c於流路H方向上，更接近於第1開口部12a之位置。即，周槽59之底部59c形成為較彈推部孔58之底部58c更厚。 The bottom portion 59c of the peripheral groove 59 is set closer to the first opening portion 12a than the bottom portion 58c of the push portion hole 58 in the direction of the flow path H. As shown in FIG. That is, the bottom portion 59c of the peripheral groove 59 is formed thicker than the bottom portion 58c of the urging portion hole 58 .

彈推部孔58可收納稍後敘述之閥板彈推部80，形成為大致圓筒狀。 The push portion hole 58 is formed in a substantially cylindrical shape so as to accommodate a valve plate push portion 80 to be described later.

彈推部孔58之底部58c設為平面狀，且可不設置具有與彎曲部59d、59e相同程度之曲率半徑之彎曲部。 The bottom portion 58c of the push portion hole 58 is flat, and a curved portion having the same curvature radius as that of the curved portions 59d and 59e may not be provided.

於內周壁59a，於可動閥板部50之徑向內側連接閥板50d。 The valve plate 50d is connected to the radially inner side of the movable valve plate portion 50 to the inner peripheral wall 59a.

於可動閥板部50中，內周曲柄部50c之內周壁59a、與閥板50d之周緣部分於較周槽59之底部59c更接近於周槽59之開口之位置連接。 In the movable valve plate portion 50 , the inner peripheral wall 59a of the inner peripheral crank portion 50c and the peripheral portion of the valve plate 50d are connected at a position closer to the opening of the peripheral groove 59 than the bottom 59c of the peripheral groove 59 .

再者，於內周壁59a之徑向內側，較佳為於成為流路H方向之可動閥板部50之厚度方向上，於較內周曲柄部50c之中心位置更接近於第1開口部12a之位置連接閥板50d。 Furthermore, on the inner side of the inner peripheral wall 59a in the radial direction, it is preferable to be closer to the first opening portion 12a than the center position of the inner peripheral crank portion 50c in the thickness direction of the movable valve plate portion 50 serving as the flow path H direction. The position is connected to the valve plate 50d.

另，作為連接內周壁59a與閥板50d之位置，可於流路H方向上，於成為接近於第1開口部12a之位置之內周壁59a之端部位置至內周曲柄部50c之中心位置之間適當設定。 In addition, the position connecting the inner peripheral wall 59a and the valve plate 50d may be from the end position of the inner peripheral wall 59a, which is a position close to the first opening portion 12a, to the center position of the inner peripheral crank portion 50c in the direction of the flow path H. appropriate settings between.

作為連接內周壁59a與閥板50d之位置，可於流路H方向上，設定於較內周曲柄部50c之中心位置，更接近於成為接近於第1開口部12a之位置之內周壁59a之端部側之位置。 The position connecting the inner peripheral wall 59a and the valve plate 50d may be set closer to the position of the inner peripheral wall 59a which is closer to the first opening 12a than the center position of the inner peripheral crank portion 50c in the direction of the flow path H. The position of the end side.

於外周壁59b，於可動閥板部50之徑向外側，周設滑動面50b。 On the outer peripheral wall 59b, on the radially outer side of the movable valve plate portion 50, a sliding surface 50b is circumferentially provided.

於外周壁59b，於可動閥板部50之徑向外側，配置包含O形環等之滑動密封襯墊(滑動密封構件)52作為板滑動密封部。 On the outer peripheral wall 59b, on the radially outer side of the movable valve plate portion 50, a sliding seal packing (sliding seal member) 52 including an O-ring or the like is arranged as a plate sliding seal portion.

於外周壁59b，周設用以收納滑動密封襯墊(滑動密封構件)52之槽52m。 On the outer peripheral wall 59b, a groove 52m for accommodating the sliding seal packing (sliding seal member) 52 is circumferentially provided.

滑動密封襯墊(滑動密封構件)52設置於較外周槽56更接近於周槽59之開口之位置，即流路H方向之接近於外周壁59b之端部之位置。 The sliding sealing gasket (sliding sealing member) 52 is provided at a position closer to the opening of the circumferential groove 59 than the outer circumferential groove 56, that is, a position closer to the end of the outer circumferential wall 59b in the flow path H direction.

槽52m設置於較外周槽56更接近於周槽59之開口之位置，即流路H方向之接近於外周壁59b之端部之位置。 The groove 52m is provided at a position closer to the opening of the circumferential groove 59 than the outer circumferential groove 56, that is, at a position closer to the end of the outer circumferential wall 59b in the flow path H direction.

槽52m於成為流路H方向之可動閥板部50之厚度方向上，配置於外周壁59b之接近於第1開口部12a之位置。 The groove 52m is arranged at a position close to the first opening 12a of the outer peripheral wall 59b in the thickness direction of the movable valve plate portion 50 serving as the flow path H direction.

於外周壁59b，於成為可動閥板部50之徑向外側之位置，周設突條，該突條設置有用以收納包含O形環等之對置緩衝件(密封構件)51之槽51m。 The outer peripheral wall 59b is provided with a groove 51m for accommodating an opposing buffer (sealing member) 51 including an O-ring or the like at a position radially outward of the movable valve plate portion 50 .

槽51m設置於突條之成為接近於第2開口部12b之位置之端面。 The groove 51m is provided in the end surface which becomes the position close to the 2nd opening part 12b of the protrusion.

設置有槽51m之突條於成為流路H方向之可動閥板部50之厚度方向上，接近於外周壁59b之第2開口部12b而配置。 The protrusion provided with the groove 51m is disposed close to the second opening 12b of the outer peripheral wall 59b in the thickness direction of the movable valve plate portion 50 serving as the flow path H direction.

槽51m於可動閥板部50之徑向上，位於較外周壁59b更靠外側。 The groove 51m is located more outward than the outer peripheral wall 59b in the radial direction of the movable valve plate portion 50 .

於可動閥板部50之徑向上，於外周壁59b之外周面，設置外周槽56。 An outer peripheral groove 56 is provided on the outer peripheral surface of the outer peripheral wall 59b in the radial direction of the movable valve plate portion 50 .

外周槽56位於流路H方向之槽52m與槽51m之間。 The outer peripheral groove 56 is located between the groove 52m and the groove 51m in the flow path H direction.

外周槽56以不與滑動密封襯墊(滑動密封構件)52相接之方式配置。 The outer peripheral groove 56 is arranged so as not to be in contact with the sliding seal packing (sliding seal member) 52 .

滑動密封襯墊(滑動密封構件)52配置於內周曲柄部50c與外周曲柄部60c之間。 The sliding seal packing (sliding seal member) 52 is arranged between the inner peripheral crank portion 50c and the outer peripheral crank portion 60c.

藉由滑動密封襯墊52，維持滑動時之滑動面50b與滑動面60b之密封狀態。 By sliding the sealing gasket 52, the sealing state of the sliding surface 50b and the sliding surface 60b during sliding is maintained.

滑動面50b、滑動密封襯墊(滑動密封構件)52、滑動面60b構成板滑動密封部。 The sliding surface 50b, the sliding seal packing (sliding sealing member) 52, and the sliding surface 60b constitute a plate sliding seal portion.

可動閥板部50與可動閥框部60藉由閥板彈推部80(保持彈簧)連接。 The movable valve plate portion 50 and the movable valve frame portion 60 are connected by a valve plate pushing portion 80 (holding spring).

可動閥板部50與可動閥框部60可於圖2中符號B1、B2所示之往復方向，進行相互相對之滑動。 The movable valve plate portion 50 and the movable valve frame portion 60 can slide relative to each other in the reciprocating directions indicated by the symbols B1 and B2 in FIG. 2 .

往復方向B1、B2係垂直於可動閥板部50及可動閥框部60之面之方向。往復方向B1、B2係平行於旋轉軸20之軸向之流路H方向。 The reciprocating directions B1 and B2 are directions perpendicular to the surfaces of the movable valve plate portion 50 and the movable valve frame portion 60 . The reciprocating directions B1 and B2 are parallel to the direction of the flow path H in the axial direction of the rotating shaft 20 .

於可動閥板部50，與閥箱內表面10B對向(抵接)之表面，周設對置緩衝件(密封構件)51。 On the surface of the movable valve plate portion 50 facing (abutting against) the inner surface 10B of the valve box, an opposing buffer (sealing member) 51 is provided on the periphery.

對置緩衝件(密封構件)51與第2開口部12b之形狀對應而形成為圓環狀。 The opposing buffer (sealing member) 51 is formed in an annular shape corresponding to the shape of the second opening 12b.

對置緩衝件(密封構件)51於閉閥時可密接於成為第2開口部12b之周緣之閥箱內表面10B。 The opposing buffer (sealing member) 51 can be in close contact with the inner surface 10B of the valve box which is the periphery of the second opening 12b when the valve is closed.

對置緩衝件(密封構件)51設為包含O形環等之密封部。 The opposing buffer (sealing member) 51 is provided as a sealing portion including an O-ring or the like.

對置緩衝件(密封構件)51設置於內周曲柄部50c之與第2開口部12b對向之端面。 The opposing buffer (sealing member) 51 is provided on the end surface of the inner peripheral crank portion 50c facing the second opening portion 12b.

對置緩衝件(密封構件)51設置於周設於外周壁59b之徑向外側之位置之突條。 The opposing buffer (sealing member) 51 is provided on a protruding bar peripherally provided at a position on the outer side in the radial direction of the outer peripheral wall 59b.

對置緩衝件(密封構件)51收納於設置於突條之下表面之槽51m。 The opposing buffer (sealing member) 51 is accommodated in the groove 51m provided in the lower surface of the protrusion.

對置緩衝件(密封構件)51設置於內周曲柄部50c之最外周位置。 The opposing buffer (sealing member) 51 is provided at the outermost peripheral position of the inner peripheral crank portion 50c.

對置緩衝件(密封構件)51於閉閥時與成為第2開口部12b之周緣之閥箱內表面10B接觸，並藉由可動閥板部50及閥箱內表面10B按壓。 The opposing buffer (sealing member) 51 is in contact with the valve box inner surface 10B serving as the peripheral edge of the second opening 12b when the valve is closed, and is pressed by the movable valve plate portion 50 and the valve box inner surface 10B.

藉此，第1空間與第2空間成為分隔狀態。 Thereby, the first space and the second space are in a separated state.

對置緩衝件(密封構件)51為彈性體。 The opposing buffer (sealing member) 51 is an elastic body.

對置緩衝件(密封構件)51於可動閥板部50與閥箱內表面10B碰撞時彈性變形。 The opposing buffer (sealing member) 51 is elastically deformed when the movable valve plate portion 50 collides with the valve box inner surface 10B.

對置緩衝件(密封構件)51緩和可動閥板部50碰撞閥箱內表面10B時之衝擊。藉此，可防止垃圾之產生。 The opposing buffer (sealing member) 51 relieves the impact when the movable valve plate portion 50 collides with the valve box inner surface 10B. Thereby, the generation of garbage can be prevented.

對置緩衝件(密封構件)51、滑動密封襯墊(滑動密封構件)52、及閥框密封襯墊61配置於大致同一圓筒面上。 The opposing buffer (seal member) 51 , the sliding seal packing (sliding seal member) 52 , and the valve frame packing 61 are arranged on substantially the same cylindrical surface.

即，對置緩衝件(密封構件)51、滑動密封襯墊(滑動密封構件)52、及閥框密封襯墊61以自流路H方向觀察，相互重疊之方式配置。 That is, the opposing buffer (sealing member) 51 , the sliding seal packing (sliding sealing member) 52 , and the valve frame packing 61 are arranged so as to overlap each other when viewed from the direction of the flow path H.

因此，獲得約100%之逆壓消除率。 Therefore, a back pressure elimination rate of about 100% is obtained.

於可動閥板部50設置排氣孔53。 An exhaust hole 53 is provided in the movable valve plate portion 50 .

排氣孔53連通外周槽56之內部、與於較對置緩衝件51更接近於中心O之位置內周曲柄部50c之與第2開口部12b對向之面。 The exhaust hole 53 communicates with the inside of the outer peripheral groove 56 and the surface of the inner peripheral crank portion 50c facing the second opening portion 12b at a position closer to the center O than the opposing buffer member 51 .

於可動閥板部50與閥箱內表面10B碰撞時，藉由可動閥板部50、閥箱內表面10B、及對置緩衝件51形成密閉空間。排氣孔53自該密閉空間去除氣體。 When the movable valve plate portion 50 collides with the inner surface 10B of the valve box, a closed space is formed by the movable valve plate portion 50 , the inner surface 10B of the valve box, and the opposing buffer member 51 . The exhaust hole 53 removes gas from the closed space.

閥板彈推部(保持彈簧)80內置於可動閥板部50之彈推部孔58。 The valve plate pushing portion (holding spring) 80 is built in the pushing portion hole 58 of the movable valve plate portion 50 .

閥板彈推部80配置於自流路H方向觀察時可動閥框部60與可動閥板部50重疊之區域，即可動閥框部60之內框板60d與可動閥板部50之內周曲柄部50c。 The valve plate pushing portion 80 is disposed in the area where the movable valve frame portion 60 and the movable valve plate portion 50 overlap when viewed from the direction of the flow path H, that is, the inner frame plate 60d of the movable valve frame portion 60 and the inner peripheral crank of the movable valve plate portion 50 part 50c.

閥板彈推部(保持彈簧)80於可動閥板部50之周向以相互隔開之等間隔設置複數個。 A plurality of valve plate pushing portions (holding springs) 80 are provided at equal intervals from each other in the circumferential direction of the movable valve plate portion 50 .

設置閥板彈推部80之部位較佳為3處以上。 Preferably, there are three or more locations where the valve plate pushing portion 80 is provided.

複數個閥板彈推部80配置2個作為一組(集)。 The plurality of valve plate pushing parts 80 are arranged as a set (set).

一組閥板彈推部80分別配置於成為通過可動閥板部50之中心O之直徑之兩端之位置。 A set of valve plate pushing parts 80 are respectively arranged at positions which become both ends of the diameter passing through the center O of the movable valve plate part 50 .

複數個閥板彈推部80於每組(集)，於可動閥板部50之周向相互隔開設置。 A plurality of valve plate pushing portions 80 are arranged in each group (set) and are spaced apart from each other in the circumferential direction of the movable valve plate portion 50 .

作為具體之複數個閥板彈推部80之配置，可如圖4所示，顯示自閥板50d之中心O觀察，4個閥板彈推部80配置於相同之角度位置(90°)之構成。 As a specific arrangement of the plurality of valve plate pushing portions 80, as shown in FIG. 4, it can be seen from the center O of the valve plate 50d that the four valve plate pushing portions 80 are arranged at the same angular position (90°). constitute.

閥板彈推部80將可動閥板部50之動向引導(限制)於流路H方向。 The valve plate pushing portion 80 guides (restricts) the movement of the movable valve plate portion 50 in the flow path H direction.

閥板彈推部80可變更可動閥框部60與可動閥板部50之位於流路H方向之厚度尺寸。 The valve plate pushing portion 80 can change the thickness dimension of the movable valve frame portion 60 and the movable valve plate portion 50 in the flow path H direction.

閥板彈推部80使可動閥板部50向可動閥框部60移動之往復方向B1、B2連動。 The valve plate pushing portion 80 interlocks with the reciprocating directions B1 and B2 in which the movable valve plate portion 50 moves to the movable valve frame portion 60 .

圖5係顯示本實施形態之閘閥之閥箱彈推部、閥框彈推部及閥板彈推部之沿流路之放大剖視圖。 Fig. 5 is an enlarged cross-sectional view showing the valve box springing portion, the valve frame springing portion and the valve plate springing portion of the gate valve of the present embodiment along the flow path.

閥板彈推部80連接可動閥框部60之內框板60d、與可動閥板部50之內周曲柄部50c。 The valve plate pushing portion 80 is connected to the inner frame plate 60 d of the movable valve frame portion 60 and the inner peripheral crank portion 50 c of the movable valve plate portion 50 .

閥板彈推部80具有板導銷81、螺旋彈簧82、受壓部83、蓋部58f、及限制筒85。 The valve plate pushing portion 80 includes a plate guide pin 81 , a coil spring 82 , a pressure receiving portion 83 , a cover portion 58 f , and a restricting cylinder 85 .

板導銷81由粗細尺寸大致均一之棒狀體構成。 The plate guide pin 81 is constituted by a rod-shaped body having a substantially uniform thickness and size.

板導銷81設為螺栓狀。 The plate guide pin 81 is formed into a bolt shape.

板導銷81將閥板彈推部80內貫通。 The plate guide pin 81 penetrates the valve plate pushing portion 80 .

板導銷81立設於流路H方向。 The plate guide pin 81 is erected in the flow path H direction.

板導銷81具有基部81b。該基部81b固設於可動閥框部60之內框板60d。 The plate guide pin 81 has a base portion 81b. The base portion 81b is fixed to the inner frame plate 60d of the movable valve frame portion 60 .

板導銷81之基部81b將內框板60d貫通。 The base portion 81b of the plate guide pin 81 penetrates the inner frame plate 60d.

板導銷81之長軸部自內框板60d向彈推部孔58立設。 The long-axis portion of the plate guide pin 81 is erected from the inner frame plate 60d toward the push portion hole 58 .

板導銷81與內周曲柄部50c之彈推部孔58同軸配置。 The plate guide pin 81 is arranged coaxially with the pushing portion hole 58 of the inner peripheral crank portion 50c.

板導銷81之前端81a位於彈推部孔58之內部。 The front end 81 a of the plate guide pin 81 is located inside the ejection portion hole 58 .

於板導銷81之前端81a，設置具有較板導銷81之長軸部大之徑尺寸之受壓部83。 At the front end 81 a of the plate guide pin 81 , a pressure receiving portion 83 having a larger diameter than the long axis portion of the plate guide pin 81 is provided.

受壓部83可與彈推部孔58之底部58c抵接，或配置於不與底部58c抵接之程度之位置。 The pressure-receiving portion 83 may be in contact with the bottom portion 58c of the push portion hole 58, or may be disposed at such a position that it does not contact the bottom portion 58c.

受壓部83以凸緣狀周設於板導銷81之前端81a。 The pressure receiving portion 83 is peripherally provided on the front end 81a of the plate guide pin 81 in a flange shape.

受壓部83自板導銷81向徑向外側突出。 The pressure receiving portion 83 protrudes radially outward from the plate guide pin 81 .

於板導銷81之長軸部，限制筒85可滑動地位於徑向外側。 At the long shaft portion of the plate guide pin 81 , the restricting cylinder 85 is slidably positioned radially outward.

限制筒85設為與板導銷81之長軸部同軸之筒狀。 The restricting cylinder 85 is formed into a cylindrical shape coaxial with the long axis of the plate guide pin 81 .

限制筒85限制板導銷81之滑動位置及滑動方向。 The restricting cylinder 85 restricts the sliding position and the sliding direction of the plate guide pin 81 .

限制筒85將一端部連接於堵塞彈推部孔58之蓋部58f。 One end of the restricting cylinder 85 is connected to the cover portion 58f which blocks the ejection portion hole 58 .

限制筒85之軸向之尺寸小於板導銷81之軸向之尺寸。 The axial dimension of the restricting cylinder 85 is smaller than the axial dimension of the plate guide pin 81 .

於限制筒85之徑向內側，配置與板導銷81接觸之襯套85a。 On the radially inner side of the restricting cylinder 85, a bush 85a which is in contact with the plate guide pin 81 is arranged.

蓋部58f以堵塞彈推部孔58之開口之方式配置。 The cover part 58f is arranged so as to block the opening of the ejection part hole 58 .

蓋部58f固定於彈推部孔58之開口位置。 The cover portion 58f is fixed to the opening position of the push portion hole 58 .

於蓋部58f設置孔部58g作為貫通孔。 The cover portion 58f is provided with a hole portion 58g as a through hole.

孔部58g設為與限制筒85同軸且同徑。 The hole portion 58g is coaxial with the restricting cylinder 85 and has the same diameter.

於孔部58g及限制筒85，嵌合有板導銷81。 The plate guide pin 81 is fitted into the hole portion 58g and the restricting cylinder 85 .

於蓋部58f之接近於內框板60d之位置，進而以與蓋部58f接觸之方式設置固定蓋58f1。 A fixed cover 58f1 is provided at a position of the cover portion 58f close to the inner frame plate 60d so as to be in contact with the cover portion 58f.

固定蓋58f1補強蓋部58f對彈推部孔58之開口之固定。 The fixing cover 58f1 reinforces the fixing of the cover portion 58f to the opening of the pushing portion hole 58 .

於固定蓋58f1，以同心狀設置大於孔部58g之貫通孔。 The fixing cover 58f1 is provided with a through hole larger than the hole portion 58g in a concentric shape.

螺旋彈簧(保持彈簧)82設為例如螺旋狀之彈簧等彈性構件。螺旋彈簧(保持彈簧)82設為具有與彈推部孔58之軸線平行之彈推軸之配置。 The coil spring (holding spring) 82 is an elastic member such as a coil-shaped spring, for example. The coil spring (holding spring) 82 is arranged to have an urging shaft parallel to the axis of the urging portion hole 58 .

螺旋彈簧(保持彈簧)82內置於可動閥板部50之彈推部孔58。 A coil spring (holding spring) 82 is built in the pusher hole 58 of the movable valve plate portion 50 .

螺旋彈簧(保持彈簧)82形成為雙重螺旋狀，並具有徑尺寸不同之內螺旋彈簧82a、與外螺旋彈簧82b。 The coil spring (holding spring) 82 is formed in a double helical shape, and has an inner coil spring 82a and an outer coil spring 82b having different diameters.

內螺旋彈簧82a、與外螺旋彈簧82b均與板導銷81同軸配置。 Both the inner coil spring 82a and the outer coil spring 82b are arranged coaxially with the plate guide pin 81 .

螺旋彈簧(保持彈簧)82雖雙重設置強化彈推力，但亦可採用單重之彈簧之構成。 Although the coil springs (holding springs) 82 are provided in double to strengthen the elastic thrust, they can also be constituted by a single spring.

螺旋彈簧(保持彈簧)82係一端抵接於蓋部58f，另一端抵接於受壓部 83。 One end of the coil spring (holding spring) 82 is in contact with the cover portion 58f, and the other end is in contact with the pressure receiving portion 83.

螺旋彈簧(保持彈簧)82以按壓該等蓋部58f與受壓部83之方式被彈推。 The coil spring (holding spring) 82 is pushed so as to press the cover portion 58f and the pressure receiving portion 83 .

於蓋部58f及固定蓋58f1，設置連通彈推部孔58之內部中底部58c附近、與成為較蓋部58f更接近於內框板60d之位置之空間之排氣孔85b。 The cover portion 58f and the fixed cover 58f1 are provided with an exhaust hole 85b communicating with the vicinity of the inner middle bottom portion 58c of the push portion hole 58 and a space closer to the inner frame plate 60d than the cover portion 58f.

於板導銷81之基部81b及內框板60d，設置連通成為較蓋部58f更接近於內框板60d之位置之空間、與較內框板60d更接近於閥箱內表面10A之中空部11之排氣孔85c。 The base portion 81b of the plate guide pin 81 and the inner frame plate 60d are provided with a space communicating with a position closer to the inner frame plate 60d than the cover portion 58f, and a hollow portion closer to the inner surface 10A of the valve box than the inner frame plate 60d. 11 of the exhaust hole 85c.

亦可於限制筒85之較襯套85a更接近於蓋部58f之位置，周設O形環等密封構件85d。 A sealing member 85d such as an O-ring may also be provided around the restricting cylinder 85 at a position closer to the cover portion 58f than the bushing 85a.

板導銷81與限制筒85相互於軸向滑動，藉此，板導銷81與限制筒85之軸向角度不變化，板導銷81與限制筒85之流路H方向之位置變化。 The plate guide pin 81 and the restricting cylinder 85 slide axially with each other, whereby the axial angle between the plate guide pin 81 and the restricting cylinder 85 does not change, and the position of the plate guide pin 81 and the restricting cylinder 85 in the flow path H direction changes.

藉此，固定板導銷81之基部81b之內框板60d、與固定限制筒85之一端之蓋部58f於流路H方向相互移動。 Thereby, the inner frame plate 60d of the base portion 81b of the fixed plate guide pin 81 and the cover portion 58f to which one end of the restricting cylinder 85 is fixed move mutually in the flow path H direction.

藉此，引導可動閥框部60與可動閥板部50之位置限制。 Thereby, the position restriction of the movable valve frame portion 60 and the movable valve plate portion 50 is guided.

螺旋彈簧(保持彈簧)82於相互隔開之方向按壓蓋部58f與受壓部83。 The coil spring (holding spring) 82 presses the lid portion 58f and the pressure receiving portion 83 in a direction spaced apart from each other.

因受壓部83、板導銷81之前端81a、板導銷81之基部81b、內框板60d相互固定，故相互之位置關係不變化。 Since the pressure receiving portion 83, the front end 81a of the plate guide pin 81, the base portion 81b of the plate guide pin 81, and the inner frame plate 60d are fixed to each other, the mutual positional relationship does not change.

因此，螺旋彈簧(保持彈簧)82於蓋部58f與內框板60d於流路H方向接 近之方向上，始終彈推蓋部58f與受壓部83。 Therefore, the coil spring (holding spring) 82 is in contact with the inner frame plate 60d in the direction of the flow path H at the lid portion 58f. In the near direction, the cover portion 58f and the pressure receiving portion 83 are always pushed up.

此處，於內框板60d與蓋部58f以隔開之方式於流路H方向移動之情形時，蓋部58f與受壓部83之距離減少。 Here, when the inner frame plate 60d and the lid portion 58f move in the direction of the flow path H so as to be spaced apart, the distance between the lid portion 58f and the pressure receiving portion 83 decreases.

藉此，螺旋彈簧(保持彈簧)82收縮。 Thereby, the coil spring (holding spring) 82 contracts.

於該情形時，因受壓部83、板導銷81之前端81a、板導銷81之基部81b、內框板60d相互固定，故位置關係亦不變化。 In this case, since the pressure receiving portion 83, the front end 81a of the plate guide pin 81, the base portion 81b of the plate guide pin 81, and the inner frame plate 60d are fixed to each other, the positional relationship does not change.

因此，收縮之螺旋彈簧(保持彈簧)82於蓋部58f與內框板60d於流路H方向接近之方向上，進而彈推蓋部58f與受壓部83。 Therefore, the retracted coil spring (holding spring) 82 pushes the lid portion 58f and the pressure receiving portion 83 in the direction in which the lid portion 58f and the inner frame plate 60d approach the direction of the flow path H.

藉此，於蓋部58f與板導銷81之擴徑之受壓部83隔開之方向，可動閥板部50與可動閥框部60相互移動。 Thereby, the movable valve plate part 50 and the movable valve frame part 60 move mutually in the direction in which the cover part 58f and the pressure receiving part 83 of the enlarged diameter of the plate guide pin 81 are spaced apart.

於閥板彈推部80中，可動閥板部50與可動閥框部60相互滑動時，貫通孔部58g之板導銷81於藉由限制筒85(襯套85a)限制軸向之朝向之狀態下，相對於蓋部58f及限制筒85於板導銷81之軸向移動。 In the valve plate pushing portion 80, when the movable valve plate portion 50 and the movable valve frame portion 60 slide against each other, the plate guide pin 81 of the through hole portion 58g is restricted in the axial direction by the restricting cylinder 85 (the bushing 85a). In the state, relative to the cover portion 58f and the restricting cylinder 85, the plate guide pin 81 moves in the axial direction.

如此，螺旋彈簧(保持彈簧)82於板導銷81之軸向收縮。 In this way, the coil spring (holding spring) 82 contracts in the axial direction of the plate guide pin 81 .

藉由收縮之螺旋彈簧(保持彈簧)82，將堵塞彈推部孔58之蓋部58f於相對於可動閥框部60之內框板60d接近之方向彈推。 By the retracted coil spring (holding spring) 82, the cover portion 58f blocking the push portion hole 58 is pushed in a direction in which the inner frame plate 60d of the movable valve frame portion 60 approaches.

藉此，可動閥板部50與可動閥框部60於流路H方向之厚度尺寸縮小之方向上，承受閥板彈推部80之彈推力。 Thereby, the movable valve plate portion 50 and the movable valve frame portion 60 receive the pushing force of the valve plate pushing portion 80 in the direction in which the thickness dimension of the flow path H is reduced.

藉由閥板彈推部80，於可動閥板部50與可動閥框部60相互滑動時，可限制滑動方向使之不自往復方向B1、B2偏離。 By the valve plate pushing portion 80, when the movable valve plate portion 50 and the movable valve frame portion 60 slide against each other, the sliding direction can be restricted so as not to deviate from the reciprocating directions B1 and B2.

又，於可動閥板部50與可動閥框部60滑動時，可動閥板部50及可動閥框部60之姿勢亦可不變化而進行平行移動。 In addition, when the movable valve plate portion 50 and the movable valve frame portion 60 slide, the movable valve plate portion 50 and the movable valve frame portion 60 may move in parallel without changing their postures.

閥板彈推部80(保持彈簧)與閥框彈推部(輔助彈簧)90以具有可於相互為反方向之流路H方向彈推之彈推力之方式設置。 The valve plate urging portion 80 (holding spring) and the valve frame urging portion (auxiliary spring) 90 are provided so as to have an urging force capable of urging in the direction of the flow path H which is opposite to each other.

閥框彈推部(輔助彈簧)90配置於中立閥部30之圓凸緣部30c、與自流路H方向觀察時與圓凸緣部30c重疊之成為可動閥框部60之位置限制部之外框板60e之間。 The valve frame pushing portion (auxiliary spring) 90 is disposed outside the circular flange portion 30c of the neutral valve portion 30 and the position limiting portion that overlaps the circular flange portion 30c when viewed from the flow path H direction and becomes the movable valve frame portion 60 between the frame plates 60e.

閥框彈推部(輔助彈簧)90相對於中立閥部30，將可動閥框部60向流路H方向之中央位置彈推。 The valve frame urging portion (auxiliary spring) 90 urges the movable valve frame portion 60 toward the center position in the flow path H direction relative to the neutral valve portion 30 .

閥框彈推部(輔助彈簧)90內置於外框板60e之彈推部孔68。 The valve frame pusher (auxiliary spring) 90 is built in the pusher hole 68 of the outer frame plate 60e.

閥框彈推部(輔助彈簧)90配置於自流路H方向觀察時中立閥部30與可動閥框部60重疊之區域，即中立閥部30之圓凸緣部30c與可動閥框部60之外框板60e。 The valve frame pushing portion (auxiliary spring) 90 is disposed in the area where the neutral valve portion 30 and the movable valve frame portion 60 overlap when viewed from the direction of the flow path H, that is, the area between the circular flange portion 30c of the neutral valve portion 30 and the movable valve frame portion 60 . Outer frame plate 60e.

複數個閥框彈推部(輔助彈簧)90於圓凸緣部30c之周向以相互隔開之等間隔設置複數個。 A plurality of valve frame pushing parts (auxiliary springs) 90 are provided at equal intervals from each other in the circumferential direction of the circular flange part 30c.

設置閥框彈推部(輔助彈簧)90之部位較佳為對應於閥板彈推部80為3處以上。 Preferably, there are three or more locations where the valve frame springs (auxiliary springs) 90 are provided corresponding to the valve plate springs 80 .

複數個閥框彈推部(輔助彈簧)90配置2個作為一組(集)。 A plurality of valve frame springs (auxiliary springs) 90 are arranged as a set (set).

一組閥框彈推部(輔助彈簧)90分別配置於成為通過可動閥框部60之中心O之直徑之兩端之位置。 A set of valve frame springs (auxiliary springs) 90 are respectively arranged at positions which become both ends of the diameter passing through the center O of the movable valve frame part 60 .

複數個閥框彈推部(輔助彈簧)90於每組(集)，於可動閥框部60之周向相互隔開設置。 A plurality of valve frame pushing parts (auxiliary springs) 90 are arranged in each group (set) and spaced apart from each other in the circumferential direction of the movable valve frame part 60 .

作為具體之複數個閥框彈推部(輔助彈簧)90之配置，可於圖4顯示自可動閥框部60之中心O觀察，4個閥框彈推部(輔助彈簧)90配置於相同之角度位置(90°)之構成。 As a specific arrangement of a plurality of valve frame pushing parts (auxiliary springs) 90, it can be seen from the center O of the automatic movable valve frame part 60 in FIG. 4 , four valve frame pushing parts (auxiliary springs) 90 are arranged in the same The composition of the angular position (90°).

自閥板50d之中心O觀察，圓凸緣部30c之周向之閥框彈推部(輔助彈簧)90之角度位置以與可動閥板部50之周向之閥板彈推部(保持彈簧)80之角度位置重疊之方式構成。 Viewed from the center O of the valve plate 50d, the angular position of the valve frame pushing portion (auxiliary spring) 90 in the circumferential direction of the circular flange portion 30c is at an angle with the valve plate pushing portion (maintaining spring) 80 in the circumferential direction of the movable valve plate portion 50 The positions are formed in such a way that they overlap.

閥框彈推部(輔助彈簧)90與閥板彈推部(保持彈簧)80配置於通過閥板50d之中心O之同一直線上。 The valve frame urging portion (auxiliary spring) 90 and the valve plate urging portion (holding spring) 80 are arranged on the same straight line passing through the center O of the valve plate 50d.

閥框彈推部(輔助彈簧)90於通過中心O之直線上，配置於較閥板彈推部(保持彈簧)80更隔開閥板50d之中心O之位置。 The valve frame pushing portion (auxiliary spring) 90 is disposed at a position farther from the center O of the valve plate 50d than the valve plate pushing portion (holding spring) 80 on a straight line passing through the center O.

閥框彈推部(輔助彈簧)90將中立閥部30與可動閥框部60之動向引導(限制)於流路H方向。 The spool push portion (assist spring) 90 guides (restricts) the movement of the neutral valve portion 30 and the movable spool portion 60 in the direction of the flow path H. As shown in FIG.

閥框彈推部(輔助彈簧)90可變更中立閥部30與可動閥框部60之位於流路H方向之厚度尺寸。 The valve frame pushing portion (auxiliary spring) 90 can change the thickness dimension of the neutral valve portion 30 and the movable valve frame portion 60 in the flow path H direction.

閥框彈推部(輔助彈簧)90使可動閥框部60相對於圓凸緣部30c向往復 方向B1、B2往復移動。 The valve frame pushing portion (auxiliary spring) 90 reciprocates the movable valve frame portion 60 relative to the circular flange portion 30c The directions B1 and B2 reciprocate.

閥框彈推部(輔助彈簧)90連接中立閥部30之圓凸緣部30c與可動閥框部60之外框板60e。 The valve frame pushing portion (auxiliary spring) 90 is connected to the circular flange portion 30c of the neutral valve portion 30 and the outer frame plate 60e of the movable valve frame portion 60 .

彈推部孔68設置於可動閥框部60之外框板60e。 The push portion hole 68 is provided in the outer frame plate 60e of the movable valve frame portion 60 .

彈推部孔68以於流路H方向具有軸線之圓筒狀形成。 The push portion hole 68 is formed in a cylindrical shape having an axis in the flow path H direction.

彈推部孔68以貫通可動閥框部60之外框板60e之方式設置。 The push portion hole 68 is provided so as to penetrate through the outer frame plate 60e of the movable valve frame portion 60 .

彈推部孔68中，外框板60e之與第2開口部12b對向之面之開口如稍後敘述般藉由受壓部93閉塞。 In the ejection portion hole 68, the opening of the surface of the outer frame plate 60e facing the second opening portion 12b is closed by the pressure receiving portion 93 as described later.

彈推部孔68中，於流路H方向上，接近於第1開口部12a之位置之開口未被閉塞。 In the ejection portion hole 68, the opening at a position close to the first opening portion 12a in the direction of the flow path H is not blocked.

即，彈推部孔68於與可動閥板部50之彈推部孔58相同之方向開口。 That is, the push portion hole 68 opens in the same direction as the push portion hole 58 of the movable valve plate portion 50 .

彈推部孔68於外框板60e之可動閥框部60之徑向上，設置於靠徑向內側之接近於外周曲柄部60c之位置。 The pushing portion hole 68 is provided in a radially inner side of the movable valve frame portion 60 of the outer frame plate 60e at a position close to the outer peripheral crank portion 60c.

閥框彈推部(輔助彈簧)90具有框導銷91、框螺旋彈簧92、及限制筒95。 The valve frame pusher (auxiliary spring) 90 has a frame guide pin 91 , a frame coil spring 92 , and a restricting cylinder 95 .

框導銷91由粗細尺寸大致均一之棒狀體構成。 The frame guide pin 91 is formed of a rod-shaped body having a substantially uniform thickness.

框導銷91貫通閥框彈推部(輔助彈簧)90內。 The frame guide pin 91 penetrates the inside of the valve frame pushing portion (auxiliary spring) 90 .

框導銷91立設於流路H方向。 The frame guide pin 91 is erected in the flow path H direction.

框導銷91固設於可動閥框部60之外框板60e。 The frame guide pin 91 is fixed to the outer frame plate 60e of the movable valve frame portion 60 .

框導銷91與外框板60e之彈推部孔68同軸配置。 The frame guide pins 91 are arranged coaxially with the pusher holes 68 of the outer frame plate 60e.

於框導銷91之基部91b，設置具有較框導銷91之長軸部大之徑尺寸之受壓部93。 The base portion 91b of the frame guide pin 91 is provided with a pressure receiving portion 93 having a larger diameter than the long axis portion of the frame guide pin 91 .

受壓部93固定於彈推部孔68之流路H方向上之與第2開口部12b對向之位置。 The pressure receiving portion 93 is fixed to a position facing the second opening portion 12b in the direction of the flow path H of the push portion hole 68 .

受壓部93閉塞彈推部孔68之流路H方向上之朝向第2開口部12b之開口。 The pressure-receiving portion 93 closes the opening toward the second opening portion 12b in the direction of the flow path H of the pushing portion hole 68 .

受壓部93形成彈推部孔68之底部。 The pressure-receiving portion 93 forms the bottom of the ejecting portion hole 68 .

即，框導銷91之基部91b形成彈推部孔68之底部作為受壓部93。 That is, the base portion 91 b of the frame guide pin 91 forms the bottom portion of the push portion hole 68 as the pressure receiving portion 93 .

受壓部93亦可螺合於彈推部孔68之開口。該情形時，框導銷91可設為螺栓狀。 The pressure-receiving portion 93 can also be screwed into the opening of the pushing portion hole 68 . In this case, the frame guide pin 91 may be formed into a bolt shape.

受壓部93於可動閥框部60中，露出於與稍後敘述之閥箱彈推部(推壓缸體)70對向之面。 The pressure receiving portion 93 is exposed in the movable valve frame portion 60 on a surface facing the valve box spring pushing portion (pressing cylinder) 70 to be described later.

框導銷91之基部91b固定於可動閥框部60之外框板60e。 The base portion 91b of the frame guide pin 91 is fixed to the outer frame plate 60e of the movable valve frame portion 60 .

框導銷91之長軸部自外框板60e之彈推部孔68朝向圓凸緣部30c立設。 The long shaft portion of the frame guide pin 91 is erected from the push portion hole 68 of the outer frame plate 60e toward the circular flange portion 30c.

於圓凸緣部30c，於與第1開口部12a對向之面設置凹部30cm。 In the circular flange part 30c, the recessed part 30cm is provided in the surface which opposes the 1st opening part 12a.

於凹部30cm之中央位置設置貫通孔30g，該貫通孔30g於流路H方向貫通圓凸緣部30c。 A through hole 30g is provided at the center position of the recessed portion 30cm, and the through hole 30g penetrates the circular flange portion 30c in the flow path H direction.

框導銷91之接近前端91a之位置可滑動地貫通於貫通孔30g。 The position of the frame guide pin 91 close to the front end 91a is slidably penetrated through the through hole 30g.

因此，框導銷91之前端91a貫通圓凸緣部30c。 Therefore, the front end 91a of the frame guide pin 91 penetrates the circular flange portion 30c.

框導銷91之前端91a可位在設置於圓凸緣部30c之凹部30cm。 The front end 91a of the frame guide pin 91 can be located in the concave portion 30cm provided in the circular flange portion 30c.

框導銷91之前端91a於流路H方向上，以較閥框密封襯墊61更遠離閥箱內表面10A之方式設定軸向長度。 The front end 91a of the frame guide pin 91 in the direction of the flow path H is set to have an axial length so that it is farther away from the inner surface 10A of the valve box than the valve frame sealing gasket 61 is.

於框導銷91之前端91a之周圍設置中立間隔物94。 A neutral spacer 94 is provided around the front end 91 a of the frame guide pin 91 .

中立間隔物94藉由C形環94a安裝於框導銷91之前端91a位置。 The neutral spacer 94 is installed at the position of the front end 91a of the frame guide pin 91 by the C-ring 94a.

中立間隔物94及C形環94a可位於凹部30cm之內部。 The neutral spacer 94 and the C-ring 94a may be located inside the recess 30cm.

於框導銷91之位於軸向中央之長軸部，可相對於框導銷91滑動之限制筒95位於徑向外側。 At the long shaft portion of the frame guide pin 91 located at the center in the axial direction, the restricting cylinder 95 that can slide relative to the frame guide pin 91 is positioned radially outward.

限制筒95設為與框導銷91之長軸部同軸之筒狀。 The restricting cylinder 95 has a cylindrical shape coaxial with the long axis of the frame guide pin 91 .

限制筒95限制框導銷91之滑動位置及滑動方向。 The restricting cylinder 95 restricts the sliding position and the sliding direction of the frame guide pin 91 .

限制筒95之軸向之尺寸小於框導銷91之軸向之尺寸。 The axial dimension of the restricting cylinder 95 is smaller than the axial dimension of the frame guide pin 91 .

於限制筒95之徑向內側，配置與框導銷91接觸之襯套95a。 On the radially inner side of the restricting cylinder 95, a bush 95a which is in contact with the frame guide pin 91 is arranged.

於限制筒95之一端部，周設凸緣部95f。 At one end of the restricting cylinder 95, a flange portion 95f is circumferentially provided.

凸緣部95f固定連接於圓凸緣部30c之成為凹部30cm之背面之位置。 The flange part 95f is fixedly connected to the position which becomes the back surface of the recessed part 30cm of the circular flange part 30c.

限制筒95藉由凸緣部95f，固定於圓凸緣部30c之與外框板60e對向之面。 The restriction cylinder 95 is fixed to the surface of the circular flange part 30c which opposes the outer frame plate 60e by the flange part 95f.

於凸緣部95f及限制筒95，具有於流路H方向延伸之貫通孔95g。 The flange portion 95f and the restricting cylinder 95 have through holes 95g extending in the flow path H direction.

貫通孔95g於凸緣部95f及限制筒95連通。 The through hole 95g communicates with the flange portion 95f and the restricting cylinder 95 .

貫通孔95g設為與貫通孔30g同軸配置。 The through hole 95g is arranged coaxially with the through hole 30g.

於貫通孔95g，與貫通孔30g同樣地接近於框導銷91之前端91a之位置可滑動地貫通。 A position close to the front end 91a of the frame guide pin 91 is slidably penetrated through the through hole 95g as in the through hole 30g.

框螺旋彈簧92構成閥框彈推部(輔助彈簧)90作為輔助彈簧。 The frame coil spring 92 constitutes a valve frame pusher (auxiliary spring) 90 as an auxiliary spring.

框螺旋彈簧92收納於彈推部孔68之內部。 The frame coil spring 92 is accommodated inside the push portion hole 68 .

框螺旋彈簧92於成為框導銷91之周圍之位置，配置成同軸狀態。 The frame coil spring 92 is arranged coaxially at a position around the frame guide pin 91 .

框螺旋彈簧92為例如彈簧等彈性構件，設為具有與彈推部孔68之軸線平行之彈推軸之配置。 The frame coil spring 92 is, for example, an elastic member such as a spring, and is configured to have an elastic shaft parallel to the axis of the biasing portion hole 68 .

框螺旋彈簧92之一端(第1端)抵接於框導銷91之基部91b之周圍即受壓部93。 One end (first end) of the frame coil spring 92 is in contact with the periphery of the base portion 91 b of the frame guide pin 91 , that is, the pressure receiving portion 93 .

框螺旋彈簧92之另一端(第2端)抵接於成為貫通孔95g之周圍之凸緣部95f。 The other end (2nd end) of the frame coil spring 92 is in contact with the flange portion 95f which becomes the periphery of the through hole 95g.

框螺旋彈簧92將框導銷91之基部91b之周圍、與貫通孔95g之周圍之凸緣部95f於流路H方向分別反向彈推。 The frame coil spring 92 urges the periphery of the base portion 91b of the frame guide pin 91 and the flange portion 95f around the through hole 95g in opposite directions in the direction of the flow path H, respectively.

框螺旋彈簧92例如亦可雙重設置，強化彈推力。 For example, the frame coil springs 92 can also be provided in double to enhance the elastic thrust.

於閥框彈推部(輔助彈簧)90中，可動閥框部60相對於中立閥部30移動時，框導銷91於固定於圓凸緣部30c之限制筒95之貫通孔95g之軸向移動。 In the valve frame pushing portion (auxiliary spring) 90, when the movable valve frame portion 60 moves relative to the neutral valve portion 30, the frame guide pin 91 is fixed to the axial direction of the through hole 95g of the restricting cylinder 95 of the circular flange portion 30c. move.

此時，框導銷91相對於襯套95a滑動。 At this time, the frame guide pin 91 slides with respect to the bush 95a.

如此，框導銷91之前端91a自凹部30cm向閥箱內表面10A突出。 In this way, the front end 91a of the frame guide pin 91 protrudes from the recessed portion 30cm toward the valve box inner surface 10A.

藉此，限制筒95之凸緣部95f、與彈推部孔68之底部即受壓部93於流路H方向接近。 Thereby, the flange portion 95f of the restricting cylinder 95 and the bottom portion of the push portion hole 68, that is, the pressure receiving portion 93, come close to each other in the flow path H direction.

此時，框螺旋彈簧92收縮。 At this time, the frame coil spring 92 contracts.

藉由收縮之框螺旋彈簧92之彈推力，受壓部93與凸緣部95f被朝相互隔開之方向推壓。 The pressure receiving portion 93 and the flange portion 95f are pressed in a direction spaced apart from each other by the urging force of the contracted frame coil spring 92 .

即，彈推部孔68之底部之受壓部93與圓凸緣部30c之背面之凸緣部95f以於流路H方向相互隔開之方式進行位置移動。 That is, the pressure receiving portion 93 at the bottom of the push portion hole 68 and the flange portion 95f on the back surface of the circular flange portion 30c move in position so as to be spaced apart from each other in the direction of the flow path H. As shown in FIG.

藉此，可動閥框部60相對於中立閥部30進行位置移動。 Thereby, the movable valve frame portion 60 moves in position with respect to the neutral valve portion 30 .

如此，藉由閥框彈推部(輔助彈簧)90，可變更中立閥部30與可動閥框部60之流路H方向之厚度尺寸。 In this way, the thickness dimension of the neutral valve portion 30 and the movable valve frame portion 60 in the flow path H direction can be changed by the valve frame pushing portion (auxiliary spring) 90 .

閥框彈推部(輔助彈簧)90相對於不於流路H方向進行位置移動之中立閥部30，使可動閥框部60向往復方向B1、B2進行位置移動。 The spool push portion (assist spring) 90 moves the neutral valve portion 30 relative to the neutral valve portion 30 without positional movement in the direction of the flow path H, and moves the movable spool portion 60 in the reciprocating directions B1 and B2.

此時，於閥框彈推部(輔助彈簧)90中，限制筒95可防止框導銷之軸向傾斜。 At this time, in the valve frame pushing portion (auxiliary spring) 90, the restricting cylinder 95 can prevent the frame guide pin from being inclined in the axial direction.

藉此，於可動閥框部60相對於中立閥部30於流路H方向進行位置移動時，可限制可動閥框部60之移動方向使之不自往復方向B1、B2偏離。 Accordingly, when the movable valve frame portion 60 moves relative to the neutral valve portion 30 in the direction of the flow path H, the moving direction of the movable valve frame portion 60 can be restricted so as not to deviate from the reciprocating directions B1 and B2.

因此，可動閥框部60相對於中立閥部30之姿勢可不變化而進行平行移動。 Therefore, the movable valve frame portion 60 can move in parallel without changing the posture of the movable valve frame portion 60 relative to the neutral valve portion 30 .

即，於可動閥框部60相對於中立閥部30於流路H方向移動時，可藉由閥框彈推部(輔助彈簧)90，維持可動閥框部60維持與旋轉軸20之軸線正交之姿勢之狀態。即，可藉由閥框彈推部(輔助彈簧)90，維持可動閥框部60不相對於旋轉軸20之軸線傾斜之狀態。 That is, when the movable valve frame portion 60 moves relative to the neutral valve portion 30 in the direction of the flow path H, the valve frame pushing portion (auxiliary spring) 90 can maintain the movable valve frame portion 60 to keep the axis of the rotating shaft 20 positive. The state of handover posture. That is, the state in which the movable valve frame portion 60 is not inclined with respect to the axis of the rotating shaft 20 can be maintained by the valve frame pushing portion (auxiliary spring) 90 .

同時，可限制可動閥框部60使之相對於中立閥部30不向流路H方向以外移動。 At the same time, the movable valve frame portion 60 can be restricted from moving out of the direction of the flow path H relative to the neutral valve portion 30 .

具體而言，可防止嵌合於圓形部30a之可動閥框部60於周向移動。 Specifically, the movable valve frame portion 60 fitted in the circular portion 30a can be prevented from moving in the circumferential direction.

藉此，於閥體5之擺動動作中，可使可動閥框部60相對於中立閥部30之保持狀態穩定，並提高閘閥100之動作穩定性。 In this way, during the swinging motion of the valve body 5 , the holding state of the movable valve frame portion 60 relative to the neutral valve portion 30 can be stabilized, and the operation stability of the gate valve 100 can be improved.

再者，於可動閥框部60相對於中立閥部30於流路H方向進行位置移動時，框導銷91與板導銷81亦平行，藉此，利用閥板彈推部80，可動閥板部50追隨而向往復方向B1、B2進行位置移動。另，於對閥板50d施加流路H方向之差壓之情形時，不限於此。 Furthermore, when the movable valve frame portion 60 moves relative to the neutral valve portion 30 in the direction of the flow path H, the frame guide pin 91 and the plate guide pin 81 are also parallel, whereby the valve plate push portion 80 is used to move the movable valve. The plate portion 50 follows and moves in the reciprocating directions B1 and B2. In addition, when the differential pressure in the direction of the flow path H is applied to the valve plate 50d, it is not limited to this.

此處，關於流路H方向之可動閥框部60之位置移動，藉由閥板彈推部(保持彈簧)80及閥框彈推部(輔助彈簧)90，於中立閥部30、可動閥板部50、及可動閥框部60相互滑動時，可限制該等構件之滑動方向使之不自往復方向B1、B2偏離。 Here, the positional movement of the movable valve frame portion 60 in the direction of the flow path H is caused by the valve plate pushing portion (holding spring) 80 and the valve frame pushing portion (auxiliary spring) 90 between the neutral valve portion 30 and the movable valve. When the plate portion 50 and the movable valve frame portion 60 slide against each other, the sliding directions of these members can be restricted so as not to deviate from the reciprocating directions B1 and B2.

又，於中立閥部30、可動閥板部50、及可動閥框部60滑動時，中立閥部30、可動閥板部50、及可動閥框部60之相互之姿勢亦不變化，可相對地進行平行移動。 In addition, when the neutral valve portion 30, the movable valve plate portion 50, and the movable valve frame portion 60 slide, the mutual postures of the neutral valve portion 30, the movable valve plate portion 50, and the movable valve frame portion 60 do not change, and can be opposed to each other. parallel movement.

於閥箱10，內置有複數個閥箱彈推部(推壓缸體)70。 In the valve box 10, a plurality of valve box pushing parts (pressing cylinders) 70 are built in.

閥箱彈推部(推壓缸體)70構成將可動閥框部60於朝向密封面之方向按壓之升降機構。 The valve box springing portion (pressing cylinder) 70 constitutes a lifting mechanism for pressing the movable valve frame portion 60 in the direction toward the sealing surface.

閥箱彈推部(推壓缸體)70連接於油壓驅動裝置(驅動部)700並藉由油壓驅動。 The valve box pushing portion (pressing cylinder) 70 is connected to a hydraulic driving device (driving portion) 700 and is driven by hydraulic pressure.

閥箱彈推部(推壓缸體)70配置於可將可動閥框部60於流路H方向上朝接近於第1開口部12a之方向彈推之位置，即成為第2開口部12b之周圍之位置。 The valve box pusher portion (the pusher cylinder) 70 is disposed at a position where the movable valve frame portion 60 can be pushed toward the direction close to the first opening portion 12a in the direction of the flow path H, that is, the second opening portion 12b. surrounding location.

閥箱彈推部(推壓缸體)70具有油壓驅動部(固定部)71、與伸縮桿(可動部)72。 The valve box pusher (pressing cylinder) 70 includes a hydraulic drive portion (fixed portion) 71 and a telescopic rod (movable portion) 72 .

油壓驅動部(固定部)71連接於油壓驅動裝置(驅動部)700。油壓驅動部(固定部)71藉由自油壓驅動裝置700供給之油壓(加壓非壓縮性流體)可使伸縮桿(可動部)72伸縮。 The hydraulic drive part (fixed part) 71 is connected to the hydraulic drive device (drive part) 700 . The hydraulic drive part (fixed part) 71 can expand and contract the telescopic rod (movable part) 72 by the hydraulic pressure (pressurized incompressible fluid) supplied from the hydraulic drive device 700 .

油壓驅動部(固定部)71設為相對於中空部11埋入至較閥箱內表面10B更靠外側之框架之內部之配置。 The hydraulic drive portion (fixed portion) 71 is arranged to be embedded in the inside of the frame outside the valve box inner surface 10B with respect to the hollow portion 11 .

伸縮桿(可動部)72沿流路H方向自固定部71向接近於第1開口部12a之方向伸長自如。 The telescopic rod (movable portion) 72 is freely extendable from the fixed portion 71 in the direction of the flow path H toward the direction close to the first opening portion 12a.

於閥箱彈推部(推壓缸體)70，以避免油壓驅動時，作動流體即油洩漏至成為真空側之中空部11之方式，設置多級之密封機構。 A multi-stage sealing mechanism is provided in the valve box pushing portion (pressing cylinder) 70 to prevent the operating fluid, ie, oil, from leaking into the hollow portion 11 on the vacuum side when driven by hydraulic pressure.

於伸縮桿(可動部)72之周圍，例如於接近於可動閥框部60之位置設置環狀之密封構件(O形環)75。伸縮桿(可動部)72於密封油壓驅動部(固定部)71與成為真空側之中空部11之邊界之狀態下伸縮自如。 An annular sealing member (O-ring) 75 is provided around the telescopic rod (movable portion) 72 , for example, at a position close to the movable valve frame portion 60 . The telescopic rod (movable part) 72 can be expanded and contracted in a state where the hydraulic drive part (fixed part) 71 is sealed and the boundary between the vacuum side hollow part 11 is sealed.

閥箱彈推部(推壓缸體)70具有使可動閥框部60向第1開口部12a移動之功能。閥箱彈推部(推壓缸體)70使可動閥框部60抵接於閥箱內表面10A，並將可動閥框部60按壓至閥箱內表面10A，封閉流路H(閉閥動作)。 The valve box springing portion (pressing cylinder) 70 has a function of moving the movable valve frame portion 60 toward the first opening portion 12a. The valve box springing part (pressing cylinder) 70 makes the movable valve frame part 60 abut against the inner surface 10A of the valve box, presses the movable valve frame part 60 to the inner surface 10A of the valve box, and closes the flow path H (valve closing operation) ).

複數個閥箱彈推部(推壓缸體)70配置於閥箱10作為可不使可動閥框部60之姿勢變化地進行按壓之位置。 A plurality of valve box push parts (pressing cylinders) 70 are arranged in the valve box 10 as a position where the movable valve frame part 60 can be pressed without changing the posture of the movable valve frame part 60 .

具體而言，閥箱彈推部(推壓缸體)70以伸縮桿(可動部)72之軸線與閥框彈推部(輔助彈簧)90之框導銷91之軸線一致之方式配置。 Specifically, the valve box springing portion (pressing cylinder) 70 is arranged so that the axis of the telescopic rod (movable portion) 72 coincides with the axis of the frame guide pin 91 of the valve box springing portion (auxiliary spring) 90 .

伸縮桿(可動部)72之前端部72a按壓閥框彈推部(輔助彈簧)90之部位以成為框導銷91之基部91b之方式配置。 The portion where the front end portion 72 a of the telescopic rod (movable portion) 72 presses the valve frame push portion (auxiliary spring) 90 is arranged so as to become the base portion 91 b of the frame guide pin 91 .

即，伸縮桿(可動部)72之前端部72a按壓閥框彈推部(輔助彈簧)90之部位以成為框導銷91之受壓部93之方式配置。 That is, the portion where the front end portion 72 a of the telescopic rod (movable portion) 72 presses the valve frame push portion (auxiliary spring) 90 is arranged so as to become the pressure receiving portion 93 of the frame guide pin 91 .

複數個閥箱彈推部(推壓缸體)70沿第2開口部12b之輪廓之周圍相互隔開設置。 A plurality of valve box pushing parts (pushing cylinders) 70 are provided spaced apart from each other along the periphery of the contour of the second opening part 12b.

複數個閥箱彈推部(推壓缸體)70於第2開口部12b之輪廓之周向以相互隔開之等間隔設置複數個。 A plurality of valve box ejection portions (pressing cylinders) 70 are provided at equal intervals from each other in the circumferential direction of the contour of the second opening portion 12b.

設置閥箱彈推部(推壓缸體)70之部位較佳為對應於閥框彈推部(輔助彈簧)90為3處以上。 Preferably, there are three or more locations where the valve box springing parts (pressing cylinders) 70 are provided corresponding to the valve frame springing parts (auxiliary springs) 90 .

複數個閥箱彈推部(推壓缸體)70配置2個作為一組(集)。 A plurality of valve box pushers (pressing cylinders) 70 are arranged as a set (set).

一組閥箱彈推部(推壓缸體)70分別配置於通過第2開口部12b之中心O之直徑(直線)之成為兩端之外側之位置。 A set of valve box pushing parts (pushing cylinders) 70 are respectively arranged at positions where the diameter (straight line) passing through the center O of the second opening part 12b becomes the outer side of both ends.

一組閥箱彈推部(推壓缸體)70與閥框彈推部(輔助彈簧)90同樣，分別配置於成為通過可動閥框部60之中心O之直徑之兩端之位置。 A set of valve box urging portions (pressing cylinders) 70 are disposed at positions that pass through the center O of the movable spool portion 60 at both ends of the diameter, similarly to the valve frame urging portions (auxiliary springs) 90 .

複數個閥箱彈推部(推壓缸體)70於每組(集)，於第2開口部12b之輪廓之周向相互隔開設置。 A plurality of valve box ejection parts (push cylinders) 70 are arranged in each group (set) spaced apart from each other in the circumferential direction of the contour of the second opening part 12b.

作為具體之複數個閥箱彈推部(推壓缸體)70之配置，可於圖4顯示自第2開口部12b之中心O觀察，4個閥箱彈推部(推壓缸體)70配置於相同之角度位置(90°)之構成。 As a specific arrangement of the plurality of valve box ejection portions (push cylinders) 70, as seen from the center O of the second opening portion 12b, four valve box ejection portions (push cylinders) 70 can be shown in FIG. 4 . A configuration that is arranged at the same angular position (90°).

自第2開口部12b之中心O觀察，圓凸緣部30c之周向之閥箱彈推部(推壓缸體)70之角度位置以與可動閥板部50之周向之閥板彈推部(保持彈簧)80及閥框彈推部(輔助彈簧)90之角度位置重疊之方式構成。 Viewed from the center O of the second opening portion 12b, the angular position of the valve box pushing portion (pressing cylinder) 70 in the circumferential direction of the circular flange portion 30c is aligned with the valve plate pushing portion (holding spring) in the circumferential direction of the movable valve plate portion 50 ) 80 and the angular position of the valve frame spring (auxiliary spring) 90 overlap.

閥箱彈推部(推壓缸體)70、閥框彈推部(輔助彈簧)90、及閥板彈推部(保持彈簧)80配置於通過閥板50d之中心O之同一直線上。 The valve box pushing portion (pressing cylinder) 70, the valve frame pushing portion (auxiliary spring) 90, and the valve plate pushing portion (holding spring) 80 are arranged on the same straight line passing through the center O of the valve plate 50d.

閥箱彈推部(推壓缸體)70與閥框彈推部(輔助彈簧)90同樣，於通過中心O之直線上，配置於較閥板彈推部(保持彈簧)80更隔開閥板50d之中心O 之位置。 Similar to the valve frame spring (auxiliary spring) 90, the valve box spring pusher (pressing cylinder) 70 is disposed farther from the valve than the valve plate spring force (holding spring) 80 on a straight line passing through the center O. Center O of plate 50d the location.

閥箱彈推部(推壓缸體)70於自閥開口遮蔽位置(滑動準備位置)之流路連通狀態(圖3、圖5)設為閉閥狀態(圖7~圖10)之情形時，藉由油壓使伸縮桿(可動部)72伸長。 When the valve box pusher (pressing cylinder) 70 is in the closed valve state (Fig. 7 to Fig. 10) from the flow path communication state (Fig. 3, Fig. 5) from the valve opening shielding position (sliding ready position) , the telescopic rod (movable part) 72 is extended by hydraulic pressure.

此時，閥箱彈推部(推壓缸體)70彈推前端部72a抵接之可動閥框部60。藉此，可動閥框部60於流路H方向朝第1開口部12a移動。閥框密封襯墊61密接於第1開口部12a之周圍之閥箱內表面10A。 At this time, the valve box pushing portion (pushing cylinder) 70 pushes the movable valve frame portion 60 with which the front end portion 72a abuts. Thereby, the movable valve frame part 60 moves toward the 1st opening part 12a in the flow path H direction. The valve frame gasket 61 is in close contact with the inner surface 10A of the valve box around the first opening 12a.

於複數個閥箱彈推部(推壓缸體)70中，伸縮桿(可動部)72之伸長動作均可大致同時動作。 In the plurality of valve box pushing parts (push cylinders) 70 , the extension actions of the telescopic rods (movable parts) 72 can be performed substantially simultaneously.

此處，伸縮桿(可動部)72之前端部72a抵接於處於延長了伸縮桿(可動部)72之軸線之位置之受壓部93。 Here, the front end portion 72 a of the telescopic rod (movable portion) 72 abuts against the pressure receiving portion 93 at a position where the axis of the telescopic rod (movable portion) 72 is extended.

因受壓部93固定於彈推部孔68之底部位置，故伸縮桿(可動部)72之按壓力經由受壓部93及外框板60e，傳遞至外周曲柄部60c。 Since the pressure receiving portion 93 is fixed at the bottom position of the pushing portion hole 68, the pressing force of the telescopic rod (movable portion) 72 is transmitted to the outer peripheral crank portion 60c through the pressure receiving portion 93 and the outer frame plate 60e.

此時，可動閥框部60相對於中立閥部30之位置限制藉由框導銷91與限制筒95進行。 At this time, the position of the movable valve frame portion 60 relative to the neutral valve portion 30 is restricted by the frame guide pin 91 and the restriction cylinder 95 .

該框導銷91之軸線、與伸縮桿(可動部)72之軸線一致。藉此，於可動閥框部60相對於中立閥部30向流路H方向移動時，可動閥框部60之移動方向上框導銷91之位置與伸縮桿72之位置一致之狀態下，伸縮桿72對框 導銷91之按壓力發揮作用。 The axis of the frame guide pin 91 coincides with the axis of the telescopic rod (movable part) 72 . Accordingly, when the movable valve frame portion 60 moves in the direction of the flow path H relative to the neutral valve portion 30, the position of the frame guide pin 91 in the moving direction of the movable valve frame portion 60 is consistent with the position of the telescopic rod 72, and the telescopic Rod 72 pairs of frames The pressing force of the guide pin 91 works.

因此，於利用閥箱彈推部(推壓缸體)70進行之可動閥框部60相對於中立閥部30之移動中，可動閥框部60相對於中立閥部30之姿勢非常穩定。 Therefore, during the movement of the movable valve frame portion 60 relative to the neutral valve portion 30 by the valve box pushing portion (pressing cylinder) 70 , the posture of the movable valve frame portion 60 relative to the neutral valve portion 30 is very stable.

同時，於可動閥框部60相對於中立閥部30向流路H方向移動時，可動閥框部60之移動方向上框導銷91之位置與伸縮桿72之位置一致之狀態下，因伸縮桿72對框導銷91之按壓力發揮作用，故可抑制於可動閥框部60產生力矩。 At the same time, when the movable valve frame portion 60 moves in the direction of the flow path H relative to the neutral valve portion 30, the position of the frame guide pin 91 in the moving direction of the movable valve frame portion 60 is consistent with the position of the telescopic rod 72. Since the rod 72 acts on the pressing force of the frame guide pin 91 , the generation of moment in the movable valve frame portion 60 can be suppressed.

因此，可抑制可動閥框部60之變形產生。 Therefore, the occurrence of deformation of the movable valve frame portion 60 can be suppressed.

藉此，可提高可動閥框部60之動作確實性，並提高可動閥框部60之密封性。 Thereby, the operation reliability of the movable valve frame portion 60 can be improved, and the sealing performance of the movable valve frame portion 60 can be improved.

藉由抑制可動閥框部60之變形產生，可順利地進行可動閥板部50相對於可動閥框部60之向流路H方向之移動。 By suppressing the occurrence of deformation of the movable valve frame portion 60 , the movement of the movable valve plate portion 50 relative to the movable valve frame portion 60 in the direction of the flow path H can be smoothly performed.

圖6係顯示圖2之油壓驅動裝置及彈推部(推壓缸體)之說明圖。 FIG. 6 is an explanatory diagram showing the hydraulic drive device and the pushing portion (the pushing cylinder) of FIG. 2 .

油壓驅動裝置700如圖6所示，具有油壓產生部701、油壓管702、切換閥(滑閥)800、驅動部705、控制部(控制器)706、及電源707。 As shown in FIG. 6 , the hydraulic drive device 700 includes a hydraulic pressure generating unit 701 , a hydraulic pipe 702 , a switching valve (spool valve) 800 , a driving unit 705 , a control unit (controller) 706 , and a power source 707 .

油壓產生部701產生對閥箱彈推部(推壓缸體)70之油壓驅動部(固定部)71供給油壓之油壓。 The hydraulic pressure generating unit 701 generates hydraulic pressure for supplying hydraulic pressure to the hydraulic driving unit (fixing unit) 71 of the valve box pushing unit (pressing cylinder) 70 .

油壓管702自油壓產生部701連接於油壓驅動部(固定部)71。 The hydraulic pipe 702 is connected from the hydraulic pressure generating unit 701 to the hydraulic driving unit (fixing unit) 71 .

切換閥(滑閥)800可設置於油壓管702並於可動閥框部60之開動作結束時切斷油壓供給，且設置於油壓管702檢測旋轉軸20之旋轉為閉位置並切換油壓供給。 The switching valve (spool valve) 800 can be installed on the hydraulic pipe 702 to cut off the hydraulic supply when the opening action of the movable valve frame portion 60 ends, and the hydraulic pipe 702 can detect the rotation of the rotating shaft 20 to the closed position and switch Oil pressure supply.

驅動部705係驅動油壓產生部701之馬達等。 The driving unit 705 is a motor or the like that drives the hydraulic pressure generating unit 701 .

驅動部705連接於控制部(控制器)706而控制。 The drive unit 705 is connected to and controlled by a control unit (controller) 706 .

驅動部705連接於電源707，並自電源707供給用以驅動驅動部705之電力。 The driving part 705 is connected to the power supply 707 , and the power for driving the driving part 705 is supplied from the power supply 707 .

又，油壓產生部701設為可進行常閉動作之構成。 Moreover, the hydraulic pressure generating part 701 is set as the structure which can perform a normally closed operation|movement.

以下，詳細說明本實施形態之閘閥100之動作。 Hereinafter, the operation of the gate valve 100 of the present embodiment will be described in detail.

首先，考慮於本實施形態之閘閥100中，閥體5如圖1中虛線所示，處於設為未設置流路H之中空部11之退避位置之狀態。此時，可動閥部40與閥箱內表面10A及閥箱內表面10B之任一者皆未相接。 First, considering the gate valve 100 of the present embodiment, the valve body 5 is in a state of being set at the retracted position of the hollow portion 11 in which the flow path H is not provided, as shown by the broken line in FIG. 1 . At this time, the movable valve portion 40 is not in contact with any one of the valve box inner surface 10A and the valve box inner surface 10B.

於該狀態下，藉由旋轉驅動部21使旋轉軸20向符號R01所示之方向(與流路H之方向交叉之方向)旋轉。如此，中立閥部30及可動閥部40沿方向R01以擺動運動進行旋轉移動。藉由該旋轉，閥體5如圖1中實線所示，自退避位置移動至設為與第1開口部12a對向之位置之閥開口遮蔽位置(滑動準備位置)。 In this state, the rotation shaft 20 is rotated in the direction indicated by the reference numeral R01 (the direction intersecting the direction of the flow path H) by the rotation drive unit 21 . In this way, the neutral valve portion 30 and the movable valve portion 40 are rotationally moved in the direction R01 by the swing motion. By this rotation, as shown by the solid line in FIG. 1, the valve body 5 moves from the retracted position to the valve opening shielding position (sliding ready position) set to the position facing the first opening 12a.

於閥體5處於閥開口遮蔽位置(滑動準備位置)之狀態下，閥箱彈推部 (推壓缸體)70於流路H方向之接近於第1開口部12a之方向，伸長伸縮桿(可動部)72。伸縮桿(可動部)72抵接於可動閥框部60，並按壓可動閥框部60。可動閥框部60向接近於第1開口部12a之方向移動。 When the valve body 5 is in the valve opening shielding position (sliding ready position), the valve box spring pushes The (pressing cylinder) 70 extends the telescopic rod (movable part) 72 in the direction close to the first opening 12a in the direction of the flow path H. As shown in FIG. The telescopic rod (movable portion) 72 is in contact with the movable valve frame portion 60 and presses the movable valve frame portion 60 . The movable valve frame portion 60 moves in a direction approaching the first opening portion 12a.

藉由閥箱彈推部(推壓缸體)70，可動閥框部60抵接於閥箱內表面10A。此時，閥框密封襯墊61密接於位於第1開口部12a之周圍之閥箱內表面10A。藉此，如圖7~圖10所示，流路H被封閉(閉閥動作)。 The movable valve frame portion 60 abuts on the inner surface 10A of the valve box by the valve box spring pushing portion (pressing cylinder) 70 . At this time, the valve frame gasket 61 is in close contact with the inner surface 10A of the valve box located around the first opening portion 12a. Thereby, as shown in FIGS. 7 to 10 , the flow path H is closed (valve closing operation).

相反，於流路H被封閉之狀態下，閥箱彈推部(推壓缸體)70使伸縮桿(可動部)72縮退。藉此，自伸縮桿(可動部)72向可動閥框部60之彈推力減少。 Conversely, in a state in which the flow path H is closed, the valve box pushing portion (pressing cylinder) 70 retracts the telescopic rod (moving portion) 72 . Thereby, the thrust force from the telescopic rod (movable part) 72 to the movable valve frame part 60 is reduced.

如此，藉由閥框彈推部90之彈推力，自閥箱10之內表面拉離可動閥框部60。可動閥框部60與閥箱內表面10A被解除密閉狀態。藉此，如圖2、圖3、圖5所示，開放流路H(解除動作)。 In this way, the movable valve frame portion 60 is pulled away from the inner surface of the valve box 10 by the elastic force of the valve frame pushing portion 90 . The sealed state of the movable valve frame portion 60 and the valve box inner surface 10A is released. Thereby, as shown in FIGS. 2 , 3 , and 5 , the flow path H is opened (release operation).

可動閥部40之閉閥動作及解除動作藉由閥箱彈推部(推壓缸體)70之機械之抵接動作、與閥框彈推部90之機械之分離動作進行。 The valve closing and releasing operations of the movable valve portion 40 are performed by the mechanical abutment action of the valve box push portion (pressing cylinder) 70 and the mechanical separation action of the valve frame push portion 90 .

於解除動作之後，藉由旋轉驅動部21使旋轉軸20向符號R02所示之方向旋轉。如此，可動閥部40自閥開口遮蔽位置(滑動準備位置)移動至退避位置(退避動作)。 After the release operation, the rotating shaft 20 is rotated in the direction indicated by the reference numeral R02 by the rotation driving unit 21 . In this way, the movable valve portion 40 moves from the valve opening blocking position (sliding preparation position) to the retracted position (retracted operation).

藉由該解除動作與退避動作，進行將可動閥部40設為閥開狀態之閥開動作。 The valve opening operation for setting the movable valve portion 40 in the valve opening state is performed by the releasing operation and the retracting operation.

於一系列動作(閉閥動作、解除動作、退避動作)中，閥板彈推部80使可動閥框部60與可動閥板部50連動。 In a series of operations (valve closing operation, release operation, and retraction operation), the valve plate pushing portion 80 causes the movable valve frame portion 60 and the movable valve plate portion 50 to interlock.

[閥體處於可進行退避動作之位置(FREE(自由))之狀態] [The valve body is in the position where the retraction action can be performed (FREE (free))]

於圖2、圖3、圖5，顯示閥開口遮蔽位置(滑動準備位置)之可動閥部40(可動閥框部60、可動閥板部50)與閥箱10之任一閥箱內表面10A、10B皆未相接之狀態。將該狀態稱為閥體FREE(自由)之狀態。 In FIGS. 2 , 3 and 5 , the movable valve portion 40 (the movable valve frame portion 60 , the movable valve plate portion 50 ) at the valve opening shielding position (sliding ready position) and any valve box inner surface 10A of the valve box 10 are shown , 10B are not connected to the state. This state is called the state of the valve body FREE.

於閥體FREE(自由)之狀態下，閥箱彈推部(推壓缸體)70之伸縮桿(可動部)72處於縮退之狀態。此時，伸縮桿(可動部)72處於不自閥箱內表面10B突出，而埋入至較閥箱內表面10A更接近於固定部71之位置之狀態。即，閥箱彈推部(推壓缸體)70未與閥體5相接。 In the state of the valve body FREE (free), the telescopic rod (movable part) 72 of the valve box pushing part (pressing cylinder) 70 is in a retracted state. At this time, the telescopic rod (movable portion) 72 is not protruding from the inner surface 10B of the valve box, but is embedded in a position closer to the fixed portion 71 than the inner surface 10A of the valve box. That is, the valve box urging portion (pressing cylinder) 70 is not in contact with the valve body 5 .

又，框導銷91未自凹部30cm突出。 Moreover, the frame guide pin 91 does not protrude from the recessed part 30 cm.

圖7係顯示本實施形態之閘閥之周緣部之沿流路之放大剖視圖。 Fig. 7 is an enlarged cross-sectional view along the flow path showing the peripheral portion of the gate valve of the present embodiment.

圖8係顯示本實施形態之閘閥之閥箱彈推部、閥框彈推部及閥板彈推部之沿流路之放大剖視圖。 FIG. 8 is an enlarged cross-sectional view showing the valve box springing portion, the valve frame springing portion and the valve plate springing portion of the gate valve of the present embodiment along the flow path.

其次，自閥體FREE(自由)之狀態，驅動閥箱彈推部(推壓缸體)70。 Next, from the state of the valve body FREE (free), the valve box pusher (pressing cylinder) 70 is driven.

如此，伸縮桿(可動部)72之前端部72a如圖7、圖8中箭頭F1所示，抵接於可動閥框部60之下表面60sb。 In this way, the front end portion 72a of the telescopic rod (movable portion) 72 is in contact with the lower surface 60sb of the movable valve frame portion 60 as indicated by the arrow F1 in FIGS. 7 and 8 .

此時，伸縮桿(可動部)72之前端部72a抵接於受壓部93。 At this time, the front end portion 72 a of the telescopic rod (movable portion) 72 is in contact with the pressure receiving portion 93 .

藉此，可動閥框部60向閥箱內表面10A移動。進而可動閥框部60移動，閥框密封襯墊61與閥箱內表面10A相接之狀態為閉閥位置之狀態(閉閥狀態)。 Thereby, the movable valve frame portion 60 moves toward the valve box inner surface 10A. Further, the movable valve frame portion 60 is moved, and the state in which the valve frame gasket 61 is in contact with the inner surface 10A of the valve box is the state of the valve closed position (valve closed state).

又，框導銷91自凹部30cm突出。 Moreover, the frame guide pin 91 protrudes from the recessed part 30cm.

此時，可動閥板部50藉由閥板彈推部(保持彈簧)80，向與可動閥框部60相同之方向移動。同時，可動閥板部50與可動閥框部60介隔滑動密封襯墊52維持滑動密封狀態。 At this time, the movable valve plate portion 50 is moved in the same direction as the movable valve frame portion 60 by the valve plate pushing portion (holding spring) 80 . At the same time, the movable valve plate portion 50 and the movable valve frame portion 60 maintain a sliding sealing state via the sliding sealing gasket 52 .

於閥體FREE(自由)之狀態下，閥箱彈推部(推壓缸體)70使可動閥框部60與閥箱10之閥箱內表面10A接觸而封閉流路H(閉閥動作)。 In the state of the valve body FREE (free), the valve box pusher (pressing the cylinder) 70 makes the movable valve frame part 60 contact the valve box inner surface 10A of the valve box 10 to close the flow path H (valve closing action) .

[閥體處於閥閉位置(正壓或無差壓)之狀態] [The valve body is in the closed position (positive pressure or no differential pressure)]

於圖7、圖8，顯示藉由上述閉閥動作封閉流路H之狀態。 7 and 8 show a state in which the flow path H is closed by the valve closing operation.

將該狀態稱為正壓/無差壓之閥閉狀態。正壓/無差壓之閥閉狀態係閥體5與閥箱10之一內表面相接之狀態，係未與另一內表面相接之狀態。 This state is called a positive pressure/no differential pressure valve closed state. The valve closing state of positive pressure/no differential pressure is the state in which the valve body 5 is in contact with one inner surface of the valve box 10, and is in the state in which it is not in contact with the other inner surface.

即，於正壓/無差壓之閥閉狀態下，閥體5之可動閥框部60與第1開口部12a之周圍之閥箱內表面10A相接。同時，閥體5未與位於第2開口部12b之周圍之閥箱內表面10B相接。 That is, in the positive pressure/no differential pressure valve closed state, the movable valve frame portion 60 of the valve body 5 is in contact with the valve box inner surface 10A around the first opening portion 12a. Meanwhile, the valve body 5 is not in contact with the inner surface 10B of the valve box located around the second opening 12b.

於正壓/無差壓之閥閉狀態下，閥箱彈推部(推壓缸體)70中，維持伸縮桿(可動部)72向朝向可動閥框部60之方向延伸之狀態。即，維持使前端部72a抵接於可動閥框部60之下表面60sb之狀態。又，維持閥框密封襯墊61與閥箱10之第1開口部12a之周圍之閥箱內表面10A相接之狀態。 In the valve closed state with positive pressure/no differential pressure, in the valve box pushing portion (push cylinder) 70, the telescopic rod (movable portion) 72 is maintained in a state of extending toward the movable valve frame portion 60 . That is, the state where the front-end|tip part 72a is contact|abutted to the lower surface 60sb of the movable valve frame part 60 is maintained. In addition, the state in which the valve frame gasket 61 is in contact with the valve box inner surface 10A around the first opening 12a of the valve box 10 is maintained.

又，框導銷91維持自凹部30cm突出之狀態。 Moreover, the frame guide pin 91 maintains the state which protrudes from the recessed part 30 cm.

[閥體處於逆壓位置之閥閉狀態] [The valve body is in the closed state when the valve body is in the reverse pressure position]

圖9係顯示本實施形態之閘閥之周緣部之沿流路之放大剖視圖。 Fig. 9 is an enlarged cross-sectional view along the flow path showing the peripheral portion of the gate valve of the present embodiment.

圖10係顯示本實施形態之閘閥之閥箱彈推部、閥框彈推部及閥板彈推部之沿流路之放大剖視圖。 FIG. 10 is an enlarged cross-sectional view along the flow path showing the valve box springing portion, the valve frame springing portion and the valve plate springing portion of the gate valve of the present embodiment.

於圖9、圖10，顯示逆壓狀態下封閉流路H之狀態。 In FIGS. 9 and 10 , the state in which the flow path H is closed under the reverse pressure state is shown.

將該狀態稱為逆壓之閥閉狀態。逆壓之閥閉狀態係閥體5與流路H方向之兩個閥箱內表面10A、10B相接之狀態。即，逆壓之閥閉狀態係保持閥體5之可動閥框部60與第1開口部12a之周圍之閥箱內表面10A相接之狀態，且閥體5之可動閥板部50亦與位於第2開口部12b之周圍之閥箱內表面10B相接之狀態。此處，逆壓係向閉閥狀態至開閥狀態之方向對閥體施加壓力。 This state is referred to as the valve closed state of the reverse pressure. The valve closed state of the reverse pressure is the state in which the valve body 5 is in contact with the two inner surfaces 10A and 10B of the valve box in the direction of the flow path H. That is, the valve-closed state of the reverse pressure maintains the state in which the movable valve frame portion 60 of the valve body 5 is in contact with the inner surface 10A of the valve box around the first opening portion 12a, and the movable valve plate portion 50 of the valve body 5 is also in contact with A state in which the inner surface 10B of the valve box located around the second opening 12b is in contact with each other. Here, the reverse pressure applies pressure to the valve body from the valve closing state to the valve opening state.

於伸縮桿(可動部)72伸長之狀態下，閥體5承受逆壓之情形時，藉由閥板彈推部80，可動閥板部50相對於可動閥框部60於往復方向B2(圖9、圖10)滑動且移動。可動閥框部60與可動閥板部50之間介隔滑動密封襯墊52維持密封狀態。 In the state where the telescopic rod (movable part) 72 is extended, when the valve body 5 is subjected to a reverse pressure, the movable valve plate part 50 is moved in the reciprocating direction B2 (Fig. 9. Figure 10) Slide and move. The sealing state is maintained between the movable valve frame portion 60 and the movable valve plate portion 50 via the sliding seal packing 52 .

藉此，可動閥板部50與第2開口部12b之周圍之閥箱內表面10B碰撞。此時，對置緩衝件51緩和可動閥板部50之碰撞之衝擊。使閥箱10之閥箱內表面10B(背側之箱體)承受閥體5承受之力之機構為逆壓消除機構。 Thereby, the movable valve plate portion 50 collides with the valve box inner surface 10B around the second opening portion 12b. At this time, the opposing buffer member 51 relieves the impact of the collision of the movable valve plate portion 50 . The mechanism that makes the inner surface 10B of the valve box (the box body on the back side) of the valve box 10 bear the force of the valve body 5 is the back pressure eliminating mechanism.

再者，自逆壓之閥閉狀態設為正壓/無差壓。於該狀態下，藉由閥框彈推部90之框螺旋彈簧92之彈推力，自閥箱10之內表面拉離可動閥框部60，使可動閥框部60退避，藉此開放流路H(解除動作)。 Furthermore, the valve closing state of self-reverse pressure is set to positive pressure/no differential pressure. In this state, the movable valve frame portion 60 is pulled away from the inner surface of the valve box 10 by the urging force of the frame coil spring 92 of the valve frame urging portion 90, so that the movable valve frame portion 60 is retracted, thereby opening the flow path. H (release action).

於本實施形態之閘閥100中，藉由閥板彈推部(保持彈簧)80及閥框彈 推部(輔助彈簧)90設為上述之構成，可於中立閥部30、可動閥板部50、及可動閥框部60相互滑動時，分別準確地進行中立閥部30、可動閥框部60、及可動閥板部50之位置限制。 In the gate valve 100 of the present embodiment, the valve plate spring (holding spring) 80 and the valve frame spring The pusher portion (auxiliary spring) 90 is configured as described above, so that when the neutral valve portion 30, the movable valve plate portion 50, and the movable valve frame portion 60 slide against each other, the neutral valve portion 30 and the movable valve frame portion 60 can be respectively accurately moved. , and the position limit of the movable valve plate portion 50 .

即，可準確地進行中立閥部30與可動閥框部60之位置限制。同時，可準確地進行可動閥框部60與可動閥板部50之位置限制。 That is, the position regulation of the neutral valve portion 30 and the movable valve frame portion 60 can be accurately performed. At the same time, the position restriction of the movable valve frame portion 60 and the movable valve plate portion 50 can be accurately performed.

尤其，可限制中立閥部30、可動閥板部50、及可動閥框部60之滑動方向使之均不自往復方向B1、B2偏離。 In particular, the sliding directions of the neutral valve portion 30, the movable valve plate portion 50, and the movable valve frame portion 60 can be restricted so as not to deviate from the reciprocating directions B1 and B2.

又，於中立閥部30、可動閥板部50、及可動閥框部60滑動時，中立閥部30、可動閥板部50、及可動閥框部60之相互之姿勢亦不變化，可相對地進行平行移動。 In addition, when the neutral valve portion 30, the movable valve plate portion 50, and the movable valve frame portion 60 slide, the mutual postures of the neutral valve portion 30, the movable valve plate portion 50, and the movable valve frame portion 60 do not change, and can be opposed to each other. parallel movement.

再者，於閥體5進行擺動動作時，中立閥部30、可動閥板部50、及可動閥框部60之相互之姿勢亦不變化，可於相互維持一體之位置關係之狀態下進行擺動動作。 Furthermore, when the valve body 5 performs the swinging motion, the mutual postures of the neutral valve portion 30 , the movable valve plate portion 50 , and the movable valve frame portion 60 do not change, and they can be swung in a state of maintaining an integral positional relationship with each other. action.

於本實施形態之閘閥100中，於伸縮桿(可動部)72按壓可動閥框部60時，可動閥框部60相對於中立閥部30之位置限制藉由框導銷91與限制筒95進行。 In the gate valve 100 of the present embodiment, when the telescopic rod (movable portion) 72 presses the movable valve frame portion 60 , the position of the movable valve frame portion 60 relative to the neutral valve portion 30 is restricted by the frame guide pin 91 and the restriction cylinder 95 . .

藉由閥箱彈推部(推壓缸體)70、閥板彈推部(保持彈簧)80、及閥框彈推部(輔助彈簧)90設為上述構成，而於可動閥框部60相對於中立閥部30向流路H方向移動時，於可動閥框部60之移動方向上框導銷91之位置與伸縮桿72之位置一致之狀態下，伸縮桿72對框導銷91之按壓力發揮作用。 The valve box pushing portion (pressing cylinder) 70 , the valve plate pushing portion (holding spring) 80 , and the valve frame pushing portion (auxiliary spring) 90 are configured as described above, and are opposed to the movable valve frame portion 60 . When the neutral valve portion 30 moves in the direction of the flow path H, in a state where the position of the frame guide pin 91 in the moving direction of the movable valve frame portion 60 is consistent with the position of the telescopic rod 72, the telescopic rod 72 presses the frame guide pin 91 Stress comes into play.

因此，於利用閥箱彈推部(推壓缸體)70進行之可動閥框部60相對於中立閥部30之移動中，可使可動閥框部60相對於中立閥部30之姿勢非常穩定。 Therefore, during the movement of the movable valve frame portion 60 relative to the neutral valve portion 30 by the valve box springing portion (pressing cylinder) 70, the posture of the movable valve frame portion 60 relative to the neutral valve portion 30 can be very stable .

同時，於被伸縮桿(可動部)72按壓之可動閥框部60相對於中立閥部30向流路H方向移動時，該可動閥框部60之移動方向、與來自伸縮桿(可動部)72之按壓力之作用方向一致。又，相對於可動閥框部60之移動方向，來自伸縮桿(可動部)72之按壓力於位於同一直線上之位置作用於可動閥框部60。 At the same time, when the movable valve frame portion 60 pressed by the telescopic rod (movable portion) 72 moves in the direction of the flow path H relative to the neutral valve portion 30, the moving direction of the movable valve frame portion 60 is related to the movement direction of the movable valve frame portion 60 from the telescopic rod (movable portion) The direction of action of the pressing force of 72 is the same. In addition, with respect to the moving direction of the movable valve frame portion 60 , the pressing force from the telescopic rod (movable portion) 72 acts on the movable valve frame portion 60 at a position on the same straight line.

藉此，可抑制於可動閥框部60產生力矩。因此，可抑制可動閥框部60之變形產生。 Thereby, the moment can be suppressed from being generated in the movable valve frame portion 60 . Therefore, the occurrence of deformation of the movable valve frame portion 60 can be suppressed.

藉由該等，可提高可動閥框部60之密封性，並提高可動閥框部60之動作確實性。 By doing so, the sealing performance of the movable valve frame portion 60 can be improved, and the operation reliability of the movable valve frame portion 60 can be improved.

又，藉由抑制可動閥框部60之變形產生，可順利地進行可動閥框部60相對於中立閥部30之向流路H方向之移動。 In addition, by suppressing the occurrence of deformation of the movable valve frame portion 60, the movement of the movable valve frame portion 60 relative to the neutral valve portion 30 in the direction of the flow path H can be smoothly performed.

藉此，可提高可動閥框部60之密封性，並提高可動閥框部60之動作確實性。 Thereby, the sealing performance of the movable valve frame portion 60 can be improved, and the operation reliability of the movable valve frame portion 60 can be improved.

又，藉由抑制可動閥框部60之變形產生，可順利地進行可動閥板部50相對於可動閥框部60之向流路H方向之移動。 In addition, by suppressing the occurrence of deformation of the movable valve frame portion 60, the movement of the movable valve plate portion 50 relative to the movable valve frame portion 60 in the direction of the flow path H can be smoothly performed.

藉此，可提高可動閥框部60及可動閥板部50之密封性，並提高可動 閥框部60之動作確實性。 Thereby, the sealing performance of the movable valve frame portion 60 and the movable valve plate portion 50 can be improved, and the movable valve plate portion 50 can be improved. The operation of the valve frame portion 60 is reliable.

再者，藉由提高密封性與動作確實性，容易進行閘閥100之開口徑之大型化。 Furthermore, by improving the sealing performance and the operation reliability, it is easy to increase the size of the opening diameter of the gate valve 100 .

於本實施形態之閘閥100中，藉由閥箱彈推部(推壓缸體)70、閥板彈推部(保持彈簧)80、及閥框彈推部(輔助彈簧)90設為上述構成，可謀求閥體5之輕量化。藉此，容易進行閘閥100之開口徑之大型化。 In the gate valve 100 of the present embodiment, the valve box springing portion (pressing cylinder) 70 , the valve plate springing portion (holding spring) 80 , and the valve frame springing portion (auxiliary spring) 90 are configured as described above. , the valve body 5 can be reduced in weight. Thereby, the enlargement of the opening diameter of the gate valve 100 becomes easy.

於本實施形態之閘閥100中，藉由閥箱彈推部(推壓缸體)70、閥板彈推部(保持彈簧)80、及閥框彈推部(輔助彈簧)90設為上述構成，可謀求零件之長壽命化。 In the gate valve 100 of the present embodiment, the valve box springing portion (pressing cylinder) 70 , the valve plate springing portion (holding spring) 80 , and the valve frame springing portion (auxiliary spring) 90 are configured as described above. , can seek longer life of parts.

於本實施形態之閘閥100中，藉由閥箱彈推部(推壓缸體)70、閥板彈推部(保持彈簧)80、及閥框彈推部(輔助彈簧)90設為上述構成，可容易於維護時等更換各彈推部70、80、90之任一者。即，可容易更換閥箱彈推部(推壓缸體)70、閥板彈推部(保持彈簧)80、及閥框彈推部(輔助彈簧)90之任一者。 In the gate valve 100 of the present embodiment, the valve box springing portion (pressing cylinder) 70 , the valve plate springing portion (holding spring) 80 , and the valve frame springing portion (auxiliary spring) 90 are configured as described above. , any one of the pushing parts 70 , 80 and 90 can be easily replaced during maintenance and the like. That is, any one of the valve box urging portion (pressing cylinder) 70, the valve plate urging portion (holding spring) 80, and the valve frame urging portion (auxiliary spring) 90 can be easily replaced.

藉此，可縮短更換等之作業時間，並削減作業步驟。 Thereby, the operation time of replacement etc. can be shortened, and operation steps can be reduced.

另，框導銷91、限制筒95、襯套95a、及伸縮桿(可動部)72均可設為滑動耐性及變形耐性較高之材質。尤其，於謀求閥體5之輕量化之情形時，較佳由剛性更高之不鏽鋼等構成該等零件。 In addition, the frame guide pin 91, the restricting cylinder 95, the bush 95a, and the telescopic rod (movable part) 72 can be made of materials with high sliding resistance and deformation resistance. In particular, in the case of reducing the weight of the valve body 5, it is preferable to constitute these parts from stainless steel with higher rigidity.

藉此，可抑制藉由伸縮桿(可動部)72按壓之框導銷91等之變形，並謀求零件之長壽命化。 Thereby, deformation of the frame guide pin 91 and the like pressed by the telescopic rod (movable part) 72 can be suppressed, and the life of the components can be prolonged.

又，可抑制相互滑動之框導銷91、限制筒95、襯套95a之劣化，並謀求零件之長壽命化。 In addition, deterioration of the frame guide pin 91, the restricting cylinder 95, and the bush 95a which slide against each other can be suppressed, and the life of the components can be prolonged.

於本實施形態中，採用閥箱彈推部(推壓缸體)70、閥板彈推部(保持彈簧)80、及閥框彈推部(輔助彈簧)90設置二組各4個之構成。除該構成以外，亦可採用三組各6個、或四組各8個等對應閘閥100之開口徑，依據其他設置組數之構成。 In the present embodiment, two sets of four are provided with the valve box springing portion (pressing cylinder) 70, the valve plate springing portion (holding spring) 80, and the valve frame springing portion (auxiliary spring) 90. . In addition to this configuration, three groups of 6 each, or four groups of 8 each, etc. corresponding to the opening diameter of the gate valve 100 can also be used, depending on other configurations of the number of groups.

又，閥箱彈推部(推壓缸體)70及閥框彈推部(輔助彈簧)90、與閥板彈推部(保持彈簧)80亦可以分別具有不同組數之方式配置。於該情形時，亦較佳為閥箱彈推部(推壓缸體)70及閥框彈推部(輔助彈簧)90設為相同之組數。 In addition, the valve box springing portion (pressing cylinder) 70, the valve frame springing portion (auxiliary spring) 90, and the valve plate springing portion (holding spring) 80 may be arranged in different sets. In this case, it is also preferable that the valve box spring pushing portion (push cylinder) 70 and the valve frame spring pushing portion (auxiliary spring) 90 are set in the same number.

[產業上之可利用性] [Industrial Availability]

本發明可廣泛應用於將分隔連結真空裝置等之真空度或溫度或氣體氛圍等性質不同之2個空間的流路之狀態、與開放該分隔狀態之狀態進行切換之用途之閘閥。 The present invention can be widely used in a gate valve for switching between the state of the flow path which separates and connects two spaces with different properties such as vacuum degree, temperature or gas atmosphere, and the state of opening the partition.

10:閥箱 10: Valve box

10A:閥箱內表面 10A: Inner surface of valve box

10B:閥箱內表面 10B: Inner surface of valve box

11:中空部 11: Hollow part

12a:第1開口部 12a: 1st opening

12b:第2開口部 12b: Second opening

30:中立閥部 30: Neutral valve department

30a:圓形部 30a: round part

30b:旋轉部 30b: Rotary part

30c:圓凸緣部 30c: Round flange part

30cm:凹部 30cm: Recess

30g:貫通孔 30g: through hole

40:可動閥部 40: Movable valve part

50:可動閥板部 50: Movable valve plate part

50b:滑動面(板滑動密封部) 50b: Sliding surface (plate sliding seal part)

50c:內周曲柄部 50c: Inner peripheral crank part

50d:閥板 50d: valve plate

51:對置緩衝件(密封構件) 51: Opposite buffer (sealing member)

52:滑動密封襯墊(滑動密封構件；板滑動密封部) 52: Sliding seal gasket (sliding seal member; plate sliding seal portion)

52m:槽 52m: slot

56:外周槽 56: Peripheral groove

58:彈推部孔 58: Pusher hole

58c:底部 58c: Bottom

58f:蓋部 58f: Cover

58f1:固定蓋 58f1: Fixed cover

58g:孔部 58g: hole

60:可動閥框部 60: Movable valve frame

60b:滑動面 60b: Sliding surface

60c:外周曲柄部 60c: Outer peripheral crank part

60d:內框板 60d: inner frame plate

60e:外框板 60e: Outer frame plate

60sb:下表面 60sb: lower surface

61:閥框密封襯墊(密封構件) 61: Valve frame sealing gasket (sealing member)

68:彈推部孔 68: spring pusher hole

70:閥箱彈推部(推壓缸體) 70: Valve box pusher (push cylinder)

71:油壓驅動部(固定部) 71: Hydraulic drive part (fixed part)

72:伸縮桿(可動部) 72: Telescopic rod (movable part)

72a:前端部 72a: Front end

75:密封構件(O形環) 75: Sealing member (O-ring)

80:閥板彈推部(保持彈簧) 80: Valve plate pusher (holding spring)

81:板導銷 81: Plate guide pin

81a:前端 81a: Front end

81b:基部 81b: base

82:螺旋彈簧(保持彈簧) 82: Coil spring (holding spring)

82a:內螺旋彈簧 82a: Inner coil spring

82b:外螺旋彈簧 82b: Outer coil spring

83:受壓部 83: Pressurized part

85:限制筒 85: Limiting cylinder

85a:襯套 85a: Bushing

85b,85c:排氣孔 85b, 85c: Air vents

85d:密封構件 85d: Sealing member

90:閥框彈推部(輔助彈簧) 90: Valve frame pusher (auxiliary spring)

91:框導銷 91: Frame guide pin

91a:前端 91a: Front end

91b:基部 91b: base

92:框螺旋彈簧 92: Box Coil Spring

93:受壓部 93: Pressurized part

94:中立間隔物 94: Neutral Spacer

94a:C形環 94a: C-ring

95:限制筒 95: Limiting cylinder

95a:襯套 95a: Bushing

95f:凸緣部 95f: Flange

95g:貫通孔 95g: through hole

B1:往復方向 B1: Reciprocating direction

B2:往復方向 B2: Reciprocating direction

H:流路 H: flow path

Claims (8)

一種閘閥，其係分隔流路者，且其特徵在於具備：閥箱，其***上述流路，且具有相互對向而連通形成上述流路之第1開口部及第2開口部；閥體，其位於上述閥箱內之中空部內並可開放及閉塞上述流路；旋轉軸，其支持上述閥體使之可於上述中空部內之退避位置與閥開口遮蔽位置之間旋轉，且具有於流路方向延伸之軸線，並固定於上述閥體；旋轉驅動部，其可旋轉驅動上述閥體；中立閥部，其構成上述閥體；可動閥框部，其可相對於上述中立閥部於上述流路方向進行位置移動地設置於上述閥體；閥框彈推部，其連接上述中立閥部與上述可動閥框部；可動閥板部，其可相對於上述可動閥框部介隔板滑動密封部於上述流路方向進行位置移動地設置於上述閥體；閥板彈推部，其連接上述可動閥框部與上述可動閥板部；閥箱彈推部，其設置於上述閥箱，並可將上述閥開口遮蔽位置之上述可動閥框部向與上述第1開口部之周緣接觸之閥閉塞位置移動；及驅動部，其驅動上述閥箱彈推部；且上述閥框彈推部具有：框導銷，其具有固定於上述可動閥框部之基部，且立設於上述流路方向而限制上述中立閥部與上述可動閥框部之滑動方向； 貫通孔，其設置於上述中立閥部，且供上述框導銷之接近前端之位置可滑動地貫通；及框螺旋彈簧，其將上述框導銷之上述基部之周圍及上述貫通孔之周圍朝上述流路方向之反向彈推。 A gate valve, which partitions a flow path, and is characterized by comprising: a valve box inserted into the flow path and having a first opening and a second opening that face each other and communicate with each other to form the flow path; a valve body, It is located in the hollow part of the valve box and can open and close the flow path; a rotating shaft supports the valve body so that it can rotate between the retracted position in the hollow part and the valve opening shielding position, and has a flow path. an axis extending in the direction and fixed to the valve body; a rotary drive part, which can rotatably drive the valve body; a neutral valve part, which constitutes the valve body; The valve frame pusher part is connected to the neutral valve part and the movable valve frame part; the movable valve plate part can be slidably sealed relative to the movable valve frame part through the partition plate. The valve body is arranged on the valve body so as to move in the direction of the flow path; the valve plate pusher part is connected to the movable valve frame part and the movable valve plate part; the valve box pusher part is arranged on the valve box, and The movable valve frame portion at the valve opening shielding position can be moved to the valve closing position in contact with the peripheral edge of the first opening portion; and a driving portion drives the valve box push portion; and the valve frame push portion has : a frame guide pin, which has a base portion fixed on the movable valve frame portion, and is erected in the direction of the flow path to restrict the sliding direction of the neutral valve portion and the movable valve frame portion; A through hole is provided in the neutral valve portion, and is slidably penetrated by the position close to the front end of the frame guide pin; and a frame coil spring, which orients the periphery of the base portion of the frame guide pin and the periphery of the through hole toward Reverse the direction of the flow path above. 如請求項1之閘閥，其中上述閥框彈推部於上述可動閥框部之周向以相互均等之距離隔開設置複數個。 The gate valve according to claim 1, wherein a plurality of the valve frame pushing portions are arranged at an equal distance from each other in the circumferential direction of the movable valve frame portion. 如請求項1之閘閥，其中複數個上述閥框彈推部在通過上述可動閥板部之中心之同一直線上相對於上述中心配置於對向之位置。 The gate valve according to claim 1, wherein a plurality of the valve frame push portions are arranged at opposite positions with respect to the center on the same straight line passing through the center of the movable valve plate portion. 如請求項1至3中任一項之閘閥，其中於上述閥框彈推部之上述貫通孔，朝向上述框導銷之上述基部，設置包圍上述框導銷之周圍且限制滑動位置之限制筒。 The gate valve according to any one of Claims 1 to 3, wherein the through hole of the valve frame spring push portion faces the base portion of the frame guide pin, and a restricting cylinder that surrounds the frame guide pin and restricts the sliding position is provided . 如請求項1至3中任一項之閘閥，其中於上述閥框彈推部之上述框導銷設置受壓部，該受壓部於上述基部擴徑，且上述受壓部承受上述框螺旋彈簧之彈推力。 The gate valve according to any one of claims 1 to 3, wherein a pressure-receiving portion is provided on the frame guide pin of the valve frame push portion, the pressure-receiving portion is enlarged in diameter at the base portion, and the pressure-receiving portion receives the frame screw The thrust of the spring. 如請求項1之閘閥，其中上述閥板彈推部具有限制上述可動閥框部與上述可動閥板部之滑動 方向的板導銷；且上述板導銷與上述閥框彈推部之上述框導銷平行配置。 The gate valve of claim 1, wherein the valve plate pushing portion has a function to restrict the sliding of the movable valve frame portion and the movable valve plate portion and the plate guide pins are arranged in parallel with the frame guide pins of the valve frame springing portion. 如請求項1之閘閥，其中上述閥板彈推部在通過上述閥框彈推部與上述可動閥板部之中心之直線上配置於較上述閥框彈推部更接近上述中心之位置。 The gate valve of claim 1, wherein the valve plate push portion is disposed at a position closer to the center than the valve frame push portion on a straight line passing through the center of the valve frame push portion and the movable valve plate portion. 如請求項1之閘閥，其中上述閥箱彈推部具有可按壓上述可動閥框部之伸縮桿(可動部)；且上述伸縮桿(可動部)之軸線與上述閥框彈推部之上述框導銷之軸線一致地配置。 The gate valve of claim 1, wherein the valve box pusher portion has a telescopic rod (movable portion) capable of pressing the movable valve frame portion; and the axis of the telescopic rod (movable portion) and the frame of the valve frame pusher portion The axes of the guide pins are uniformly arranged.
TW109119884A 2019-06-21 2020-06-12 gate TWI750693B (en)

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TW201124655A (en) * 2009-09-03 2011-07-16 Ulvac Inc Gate valve
JP2012251624A (en) * 2011-06-03 2012-12-20 Ulvac Japan Ltd Slide valve
CN105008779A (en) * 2013-01-18 2015-10-28 (株)尤恩爱搜路斯 Back pressure blocking sliding valve
TW201816310A (en) * 2016-10-04 2018-05-01 日商愛發科股份有限公司 Gate valve

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