JPS6030874A - Sluice valve - Google Patents

Sluice valve

Info

Publication number
JPS6030874A
JPS6030874A JP13707483A JP13707483A JPS6030874A JP S6030874 A JPS6030874 A JP S6030874A JP 13707483 A JP13707483 A JP 13707483A JP 13707483 A JP13707483 A JP 13707483A JP S6030874 A JPS6030874 A JP S6030874A
Authority
JP
Japan
Prior art keywords
valve
inner hole
plug
valve inner
cutoff part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13707483A
Other languages
Japanese (ja)
Inventor
Shigehiro Kawai
茂弘 川合
Shozo Kanamori
庄三 金森
Masaru Tsuge
柘植　勝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Azbil Corp
Original Assignee
Azbil Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Azbil Corp filed Critical Azbil Corp
Priority to JP13707483A priority Critical patent/JPS6030874A/en
Publication of JPS6030874A publication Critical patent/JPS6030874A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16K3/22—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 sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—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 sealing faces shaped as surfaces of solids of revolution with cylindrical valve members

Landscapes

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

Abstract

PURPOSE:To reduce the finishing area of a plug cutoff part and aim at improvements in sealability, by projectingly forming a tail in parallel with a flow line in at least a side face at the downstream side between both sides at the fluid opposite side to the cutoff part formed in a plug head. CONSTITUTION:A cutoff part 20b or a lower end head part of a plug 20 situated in the central part of a straight-tubular valve inner hole 3a is made to go down together with a valve shaft 18 and seated on an inner circumferential surface of the valve inner hole 3a so that a flow passage is fully closed. Then, a side face at the downstream side of the cutoff part 20b is notched from both sides and thereby a tail 20e is projected outward and formed whereby in time of opening the cutoff part 20b, a flow of fluid acts on both surfaces of the tail 20e, thus directional properties are maintained. In the cutoff part 20b, only the spot where it contacts the inner circumferential surface of the valve inner hole 3a is machined for finish in accord with size of the valve inner hole 3a, and the others are left unsurfaced intact as was formed.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は流路内に設けて流体の流量全制御するスルース
弁に関するものでるる。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a sluice valve that is installed in a flow path and controls the total flow rate of fluid.

〔従来技術〕[Prior art]

流路内に設けて流体の流ｔを制御する弁の一種として、
断面円形の直管状流路をプラグで開閉するようにしたス
ルース弁が知られている。この種のスルース弁は円筒状
弁本体の外周部に弁本体の流体通路と直交するスタフイ
ングボックスを備えておシ、このスタフイングボックス
内にパツキンを介して設けたプラグを摺動させ、その先
端部で断面円形の直管状流体通路を開閉してその開度に
より流体の流量を制御するものでるる。As a type of valve that is installed in a flow path to control the fluid flow t,
A sluice valve is known in which a straight tubular flow path with a circular cross section is opened and closed by a plug. This type of sluice valve is equipped with a stuffing box on the outer periphery of the cylindrical valve body that is orthogonal to the fluid passage of the valve body. A straight tubular fluid passage with a circular cross section is opened and closed at the tip, and the flow rate of the fluid is controlled by the degree of opening.

したがって従来そのプラグの先端部は弁内）ｂの半径と
はマ一致する半径の砲弾型生球面状に形成されているが
、このような従来のプラグにおいては、密栓性の良い形
状を正確に得ることがむつかしく、全閉にしても流体が
洩れ易いという欠点があった。ことにスラリや高粘度流
体など特殊流体の制御用として侵蝕摩耗を防止するため
にセラミック材や超硬鋼材を弁内孔やプラグに使用した
ものにあっては、正確な加工がきわめて困難でめった。Therefore, conventionally, the tip of the plug is formed into a bullet-shaped spherical shape with a radius that matches the radius of (b) inside the valve. It is difficult to obtain a seal, and even when it is fully closed, fluid tends to leak. In particular, for valve inner holes and plugs that use ceramic or cemented carbide to prevent corrosive wear and are used to control special fluids such as slurry or high-viscosity fluids, accurate machining is extremely difficult and rare. .

〔発明の概要〕[Summary of the invention]

本発明は以上のような点に鑑みなされたもので弁内孔に
対しはｙ直角方向から抜き挿しされるプラグの頭部に、
弁内孔の半径よりもわずかに小さい半径を有する締切部
を設け、この締切部の少なくとも下流側流体に対向する
側面を弁内孔側側壁側から対称形状に切欠いて流線と平
行する尾翼を突出形成することにより、プラグ締切部の
仕上加工面積を小さくして低コストで密封性の向上を計
９併せてプラグの回転防止を計ったスルース弁を提供す
るものでるる。以下、本発明の実施例全図面に基いて詳
細に説明する。The present invention has been made in view of the above points, and includes a plug that is inserted into and removed from the valve inner hole from the y-perpendicular direction.
A shut-off portion having a radius slightly smaller than the radius of the valve inner hole is provided, and at least the side surface of the shut-off portion facing the downstream fluid is cut out in a symmetrical shape from the side wall side of the valve inner hole to form a tail plane parallel to the streamline. By forming a protrusion, the finishing area of the plug shut-off part is reduced, thereby providing a sluice valve which improves sealing performance at low cost and prevents rotation of the plug. Embodiments of the present invention will be described in detail below with reference to all the drawings.

〔実施例〕〔Example〕

第１図および第２図は本発明に係るスルース弁の実施例
を示し、第１図はその縦断面図、第２図は第１図のＡＡ
断面図でるる。図において、スルース弁１の弁本体２は
円筒状に形成されていてその両端部には図示しない管に
接続されるフランジ２ａ　、２ｂが一体形成されており
、その内周面には円筒状に形成されたセラミック製のラ
イナ３が接着剤４によって固着されている。ライナ３の
内孔でめる弁内孔３ａは、断面を円形に形成されて管と
の接合フランジ２ａ　、　２ｂから中央部へ向うにした
がい小径となる、ように両端部をテーバ状に形成されて
おり、中央部は断面円形の直管状に形成されている。弁
内孔３ａの中央部上方には、弁内孔３ａの軸芯と直交す
る軸、−ｔ５　’ｆｃ有する円形の凹孔５が弁本体２と
ライナ３の上半部とを貫通して設けられており、この凹
孔５には有底円筒状に形成されたセラミック製のスタフ
ィックボックス６が凹孔５の底面との間にパツキンＴと
Ｏリング８とを介在させて嵌挿されている。符号９で示
すものは段付きの円筒状に形成されてその下端フランジ
部金被数個のボルト１０で弁本体２０円形座２ｃに接合
された上蓋でろって、下端の環状突起を弁本体２の凹孔
と嵌合させており、ポル）１（［締めることにより内周
段部でスタフイングボックス６を抑圧固定するように構
成されている。また、上蓋９の上端ねじ部には、環状の
取付板１１が螺合されている。1 and 2 show an embodiment of a sluice valve according to the present invention, FIG. 1 is a longitudinal sectional view thereof, and FIG. 2 is an AA of FIG. 1.
A cross-sectional view. In the figure, a valve body 2 of a sluice valve 1 is formed into a cylindrical shape, and flanges 2a and 2b are integrally formed at both ends thereof to be connected to a pipe (not shown). The formed ceramic liner 3 is fixed with an adhesive 4. The valve inner hole 3a, which is fitted into the inner hole of the liner 3, has a circular cross section, and has tapered ends at both ends so that the diameter decreases from the joining flanges 2a and 2b with the pipes toward the center. The central part is shaped like a straight tube with a circular cross section. A circular concave hole 5 having an axis -t5'fc perpendicular to the axis of the valve inner hole 3a is provided above the center of the valve inner hole 3a, passing through the valve body 2 and the upper half of the liner 3. A ceramic stuff box 6 formed into a cylindrical shape with a bottom is fitted into the recessed hole 5 with a packing T and an O-ring 8 interposed between it and the bottom surface of the recessed hole 5. There is. The one indicated by the reference numeral 9 is formed into a stepped cylindrical shape, and its lower end flange is connected to the valve body 20 by several bolts 10 to the circular seat 2c of the valve body. The stuffing box 6 is fitted into the concave hole of the upper cover 9, and is configured to suppress and fix the stuffing box 6 at the inner circumferential step by tightening. A mounting plate 11 is screwed together.

符号１２で示すものは円筒状に形成されたパッキンホロ
アでるって、上蓋９の内孔に摺動自在に嵌挿されておシ
、前記スタフイングボックス６の内孔へ係入された下端
部とスタフイングボックス６の底面との間には、各種の
パツキン１３　、１．４が介装されている。そして前記
取付板１１に植設された複数個のボルト１５には、円板
状の押え板１６が下面をパッキンホロア１２の上面に当
接させて支持されており、ポル）１５に螺合されたナツ
ト１７（ｉ−締めることにより、パッキンホロア１２を
介してパツキン１３　、１４’ｅ締付けるように構成さ
れている。Reference numeral 12 denotes a cylindrical packing follower, which is slidably inserted into the inner hole of the upper cover 9, and whose lower end is inserted into the inner hole of the stuffing box 6. Various packings 13, 1.4 are interposed between the stuffing box 6 and the bottom surface thereof. A disc-shaped presser plate 16 is supported by a plurality of bolts 15 planted in the mounting plate 11 with its lower surface in contact with the upper surface of the packing follower 12, and is screwed into the bolt 15. By tightening the nut 17 (i-), the packings 13 and 14'e are tightened via the packing follower 12.

符号１８で示すものは円柱状に形成されて上端部に接続
ねじ１８ａ　を有する弁軸でめって、パッキンホロア１
２の内孔へ上下動自在に嵌挿されてお・す、その局面に
設けたキー溝１８ｂにパッキンホロア１２側のキー１９
を係合させることにより回動を規制されている。また接
続ねじ１８ａには弁軸１８を上下動させる現動部（図示
せず）の作用端が螺合されている。そして弁軸１８の下
端部には円形の凹孔１８ｃ　が穿設されており、この凹
孔１８ｃには、全体を符号２０で示すセラミック製プラ
グの上端小径部２０ａが係入されて接着剤２１で固定さ
れている。このプラグ２ｏはパッキンホロア１２および
パツキン１３．１４の内孔としつくり嵌合する円柱状に
形成されておシ、前記直管状の弁内孔３ａ中央部に臨む
下端頭部でるる締切部２０ｂ　ｔｊ、、弁内孔３ａ中央
部の半径よシもわずかに小さい半径を有する半球体部と
これに連続する同径の円柱部とで形成されている。図は
プラグ２０が弁軸１８とともに上昇して弁内孔３ａの流
体通路が全開された状態を示しており、この状態からプ
ラグ２０を弁軸１８とともに下降させて締切部２０ｂの
下端を弁内孔３ａの内周面に後座させることによシ弁内
孔３ａの流体通路が全閉されるように構成されている。The one indicated by reference numeral 18 is formed into a cylindrical shape and is fitted with a valve shaft having a connecting screw 18a at the upper end, and is attached to the packing follower 1.
The key 19 on the side of the packing follower 12 is inserted into the inner hole of the packing follower 12 in a key groove 18b provided on the surface thereof.
Rotation is regulated by engaging. Further, the working end of a working part (not shown) that moves the valve shaft 18 up and down is screwed into the connecting screw 18a. A circular concave hole 18c is bored in the lower end of the valve shaft 18, and a small diameter portion 20a at the upper end of a ceramic plug, generally designated by the reference numeral 20, is inserted into the concave hole 18c. is fixed. This plug 2o is formed into a cylindrical shape that fits into the inner holes of the packing follower 12 and the packing 13.14, and has a cut-off portion 20b with a head portion at the lower end facing the center of the straight valve inner hole 3a, The valve inner hole 3a is formed of a hemispherical portion having a slightly smaller radius than the central portion of the valve inner hole 3a, and a cylindrical portion having the same diameter that is continuous with the hemispherical portion. The figure shows a state in which the plug 20 is raised together with the valve shaft 18 and the fluid passage in the valve inner hole 3a is fully opened.From this state, the plug 20 is lowered together with the valve shaft 18, and the lower end of the shutoff portion 20b is inserted into the valve. By seating the valve on the inner peripheral surface of the hole 3a, the fluid passage of the valve inner hole 3a is completely closed.

そして締切部２０ｂは、全閉時に下流側流体（本実施例
では流体がフランジ２ａ側からフランジ２ｂ側へ流れる
のでフランジ２ｂ側が下流側である。）に対向する側面
が弁内孔３ａの両側壁３ｂ　、　３ｃ側から対称形状に
切欠かれて切欠き２０ｃ、２０ｄが形成されてお夛、こ
の結果側面中央部には流線と平行する尾翼２０ｅが突出
形成されている。そして締切部２０ｂは弁内孔３ａの内
周面に接する箇所のみが弁内孔３ａの寸法に合わせて仕
上加工されており、その他は形成肌の！！５である。The shutoff portion 20b has a side surface facing the downstream fluid (in this embodiment, the fluid flows from the flange 2a side to the flange 2b side, so the flange 2b side is the downstream side) when fully closed is the both side walls of the valve inner hole 3a. Notches 20c and 20d are formed symmetrically from the sides 3b and 3c, and as a result, a tail fin 20e is formed protruding from the center of the side surface parallel to the streamline. Only the portion of the closing portion 20b that contacts the inner circumferential surface of the valve inner hole 3a is finished to match the dimensions of the valve inner hole 3a, and the rest is of the formed skin! ! It is 5.

以上のように構成されたスルース弁において、弁本体２
のフランジ２ａ　、　２ｂに管を接合して流体を前記の
ようにフランジ２ａ側から流入させると流体は弁内孔３
ａ　を通りフランジ２ｂ側へ向って流れる。駆動装置で
弁軸１８を図示のように上昇させると１ラグ２０が一体
となって上昇し締切部２０ｂ　における流路が全開とな
るので流体の流量は最大となる。そして弁軸１８ととも
にプラグ２０を下降させるにしたがい流路が縮小されて
流量が小さくなり、締切部２０ｂの下端が弁内孔３ａの
周面に後座すると流路が全閉となって流路が締切られる
。この場合、締切部２０ｂの下流側側面を両側から切欠
いて尾ｇ２０ｅｅ突出形成したことにより、締切部２０
ｂの開放時には流体の流れが尾翼２０ｅ　の両面に作用
して方向性が保たれるので、キー１９を設けたときはも
とよシ、キー１９を設けなくともプラグ２００回転を防
止することができる。したがって本実施例のように締切
部２０ｂ　の仕上加工は弁内孔３ａ　の両側壁３ｂ、　
３ｃに接する箇所だけでよく、上流、下流に面する部分
を形成肌のま＼にしても密封性が得られる。In the sluice valve configured as described above, the valve body 2
When pipes are connected to the flanges 2a and 2b of the valve and fluid is allowed to flow in from the flange 2a side as described above, the fluid flows into the valve inner hole 3.
a and flows toward the flange 2b side. When the valve shaft 18 is raised as shown in the drawing by the driving device, the lug 20 is raised together, and the flow path in the shutoff portion 20b is fully opened, so that the flow rate of the fluid is maximized. Then, as the plug 20 is lowered together with the valve shaft 18, the flow path is contracted and the flow rate becomes smaller, and when the lower end of the cut-off portion 20b seats on the circumferential surface of the valve inner hole 3a, the flow path is completely closed. is closed. In this case, the downstream side surface of the closing portion 20b is notched from both sides to form a protruding tail g20ee, so that the closing portion 20
When b is opened, the fluid flow acts on both sides of the tail fin 20e and the directionality is maintained, so it is possible to prevent the plug from turning 200 times even when the key 19 is provided, and even without the key 19. can. Therefore, as in this embodiment, the finishing of the closing portion 20b is performed on both side walls 3b of the valve inner hole 3a.
3c is sufficient, and even if the parts facing upstream and downstream are left as formed skin, sealing performance can be obtained.

なお、本実施例では尾翼２０ｅ　を締切部２０ｂの下流
側にのみ設けた例を示したが、８３図にプラグの仰視図
を示すように、上流側にも軸芯に対する両側において対
称形状を有する突起２０ｆ　ｉ設けてもよい。こうする
ことによって流体の流れに対するプラグ２０の方向性が
さらに向上する。Although this embodiment shows an example in which the tail fin 20e is provided only on the downstream side of the closing portion 20b, as shown in FIG. A protrusion 20f i may be provided. This further improves the directionality of the plug 20 with respect to fluid flow.

〔発明の効果〕〔Effect of the invention〕

以上の説明により明らかなように、本発明によればスル
ース弁において、弁内孔に対しはソ直角方向から抜き挿
しされるプラグの頭部に、弁内孔の半径よりもわずかに
小さい半径を有する締切部を設け、この締切部の少なく
とも下流側流体に対向する側面全弁内孔両側壁側から対
称形状に切欠いて流線と平行する尾翼を突出形成するこ
とにより、締切部の球面加工は弁内孔の内周面に接する
箇所のみでよく上下流に面する部分はすべて形成肌のま
＼でよいので、締切郡全体を球面加工していた従来のも
のと比較して加工が著しく容易になり製造コストが低減
されるとともに、このような低コストでも密封性を充分
に確保することができる。また流体の流れが尾翼に作用
してプラグの方向性が維持されるので、プラグの回転を
防止することができ、前記球面加工面積の趙小がさらに
確実になる。As is clear from the above explanation, in the sluice valve according to the present invention, the head of the plug that is inserted and removed from the valve inner hole from a direction perpendicular to the valve inner hole has a radius slightly smaller than the radius of the valve inner hole. The spherical surface machining of the shut-off part is achieved by providing a shut-off part having a symmetrical shape and forming a tail fin extending parallel to the streamline by cutting it out in a symmetrical shape from both side walls of the entire valve inner hole, at least on the side facing the downstream fluid of the shut-off part. Since only the part that touches the inner peripheral surface of the valve inner hole and all the parts facing upstream and downstream need to be left as formed skin, machining is much easier compared to conventional methods in which the entire cutoff group was machined into a spherical surface. As a result, manufacturing costs are reduced, and even at such a low cost, sufficient sealing performance can be ensured. In addition, since the fluid flow acts on the tail to maintain the directionality of the plug, rotation of the plug can be prevented, and the spherical processing area can be more precisely corrected.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図ないし第３図は本発明に係るスルース弁の実施例
１示し、第１図はその縦断面図、第２図は第１図のＡＡ
断面図、第３図は本発明の他の実施例を示すプラグ締切
部の仰視図でるる。 １・・・・スルース弁、３＆　・・・・弁内孔、２０・
中・・プラグ、２０ｂφ・・・締切部、２０ｃ　、　２
０ｄ・　・・ψ切欠き、２０ｅ−Φ・・尾翼。 特許出願人　山武ハネウェル株式会社 代理人　山川政樹（ほか１名）1 to 3 show a first embodiment of a sluice valve according to the present invention, FIG. 1 is a longitudinal sectional view thereof, and FIG. 2 is an AA of FIG. 1.
The sectional view and FIG. 3 are elevational views of a plug closing portion showing another embodiment of the present invention. 1... Sluice valve, 3 &... Valve inner hole, 20.
Middle... Plug, 20bφ... Closing part, 20c, 2
0d...φ notch, 20e-Φ...tail. Patent applicant Yamatake Honeywell Co., Ltd. Agent Masaki Yamakawa (and one other person)

Claims (1)

【特許請求の範囲】[Claims] 断面円形の弁内）しにはソ直角方向から抜き挿しされる
円柱状のプラグ金偏え、このプラグの前記弁内孔に臨む
頭部に弁内孔の半径よりもわずかに小さい半径をイ１す
る締切部を設けるとともに、この締切部の流体対向側両
側面のうちの少なくとも下流側側面に流線と平行する尾
翼が突出形成されるようにプラグ締切部を前記弁内孔の
両側壁側から対称形状に切欠いたことｔ％徴とするスル
ース弁。Inside a valve with a circular cross section, there is a cylindrical plug that is inserted and inserted from the right angle direction, and the head of this plug facing the valve inner hole has a radius slightly smaller than the radius of the valve inner hole. 1, and the plug shut-off portion is attached to both side walls of the valve inner hole so that a tail wing parallel to the streamline is formed protruding from at least the downstream side of the fluid-facing side surfaces of the shut-off portion. A sluice valve with a symmetrical notch.
JP13707483A 1983-07-27 1983-07-27 Sluice valve Pending JPS6030874A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13707483A JPS6030874A (en) 1983-07-27 1983-07-27 Sluice valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13707483A JPS6030874A (en) 1983-07-27 1983-07-27 Sluice valve

Publications (1)

Publication Number Publication Date
JPS6030874A true JPS6030874A (en) 1985-02-16

Family

ID=15190290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13707483A Pending JPS6030874A (en) 1983-07-27 1983-07-27 Sluice valve

Country Status (1)

Country Link
JP (1) JPS6030874A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111075943A (en) * 2020-02-25 2020-04-28 黄晓峰 Valve gate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111075943A (en) * 2020-02-25 2020-04-28 黄晓峰 Valve gate

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