KR20170123164A - Butterfly valve - Google Patents

Butterfly valve Download PDF

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Publication number
KR20170123164A
KR20170123164A KR1020160052480A KR20160052480A KR20170123164A KR 20170123164 A KR20170123164 A KR 20170123164A KR 1020160052480 A KR1020160052480 A KR 1020160052480A KR 20160052480 A KR20160052480 A KR 20160052480A KR 20170123164 A KR20170123164 A KR 20170123164A
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KR
South Korea
Prior art keywords
sealing
sealing member
valve
circumferential surface
outer circumferential
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Application number
KR1020160052480A
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Korean (ko)
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장세훈
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장세훈
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Priority to KR1020160052480A priority Critical patent/KR20170123164A/en
Publication of KR20170123164A publication Critical patent/KR20170123164A/en

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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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/222—Shaping of the valve member
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/46—Attachment of sealing rings
    • 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
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly valves

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

The present invention relates to a butterfly valve. An external portion of a core material (11) of a disc shape valve disc (10) is configured to be covered by an elastic material sealing member (12), and sealing portions (13) of both sides formed in an outer circumferential surface both side end portions of the sealing member (12) are formed to be curved to protrude in a diameter direction and laterally from each outer surface of both sides. The sealing member (12) between both sealing portions (13) is formed to have the same thickness as an outer circumferential surface of the core material (11). When the valve disc (10) is opened and closed, an adhesive force with an inner circumferential surface of a flow path (31) of the valve body (30) is improved, and deformation prevention and durability of the valve body (30) are improved.

Description

버터플라이 밸브{Butterfly valve}Butterfly valve

본 발명은 버터플라이 밸브에 관한 것으로서, 보다 상세하게는 관로에 연결되어 유체의 이동을 단속 및 제어하도록 구비되는 밸브 디스크의 외주면 양측으로 구비되는 실링부와 함께 이들 양측 실링부 사이의 실링부재를 더욱 보강되게 함으로써 밸브 디스크의 개폐 작동 실링부와 실링부재의 변형과 손상이 미연에 방지되도록 하여 안정된 작동성과 실링의 신뢰성이 더욱 향상되도록 하는 버터플라이 밸브에 관한 것이다.[0001] The present invention relates to a butterfly valve, and more particularly, to a butterfly valve which is connected to a pipeline and includes a sealing portion provided on both sides of an outer circumferential surface of a valve disk provided for interrupting and controlling fluid movement, So that deformation and damage of the opening and closing operation sealing portion and the sealing member of the valve disc can be prevented beforehand, so that the stable operation and the reliability of the sealing can be further improved.

일반적으로 송수관이나 송유관 또는 가스관과 같은 대형의 관로에는 유량의 조절 및 단속을 위하여 제어밸브를 소정의 간격을 두고 설치되도록 하고 있다.In general, a large-sized pipe such as a water pipe, an oil pipe, or a gas pipe is provided with a control valve at a predetermined interval for controlling the flow rate and interrupting the flow rate.

이러한 제어밸브 중 대표적으로 사용되는 밸브가 버터플라이 밸브이다.A representative one of these control valves is a butterfly valve.

버터플라이 밸브는 일측 또는 양측으로 관로가 연결될 수 있도록 하는 밸브바디와 이 밸브 바디의 내부에서 회전가능하게 구비되어 수동 또는 자동으로 유로가 개폐되도록 하는 밸브 디스크 및 밸브 디스크의 외주면에 결합되어 밸브바디의 내주면과 밀착되면서 실링이 이루어지도록 하는 실링부재로서 이루어지는 구성으로 구비된다.The butterfly valve includes a valve body that is connected to one or both sides of the valve body, a valve body that is rotatably disposed inside the valve body, and that is manually or automatically opened and closed by the valve body, And a sealing member for sealing the inner peripheral surface while being in close contact with the inner peripheral surface.

등록실용신안 제0378617호(2005.03.03.명칭:버터플라이 밸브)의 도면2에서 보는바와 같이 버터플라이 밸브 중 밸브 디스크는 주철 등을 재질로 이루어지는 원판형의 심재의 외부를 탄성재질의 실링부재에 의해 커버되도록 한다.As shown in FIG. 2 of the registered Utility Model No. 0378617 (March 3, 2005, name: Butterfly Valve), the valve disc of the butterfly valve is made of a disc-shaped core material made of cast iron or the like and made of an elastomeric sealing member .

심재에는 양측으로 동력전달수단인 회전축이 연결되는데 이러한 회전축 연결을 위하여 회전축 연결부가 구비되도록 한다.The core member is connected to the rotary shaft, which is a power transmitting means, on both sides. The rotary shaft connecting portion is provided for connecting the rotary shaft.

실링부재는 일정 간격을 두고 양측으로 밸브 바디의 내주면과 밀착되도록 외경방향으로 보다 돌출되도록 실링부가 형성되도록 하고, 이들 실링부 사이에는 오링이 구비되도록 하기도 한다.The sealing member may be formed to have a sealing portion so as to protrude in the outer diameter direction so as to be in close contact with the inner circumferential surface of the valve body on both sides at regular intervals, and an O-ring may be provided between the sealing portions.

하지만 종래 기술의 버터플라이 밸브에서 밸브 디스크의 회전에 의해 도 1과 같이 밸브 바디의 내주면과 밀착되면서 밸브 디스크(100)의 실링부재(110)에서 밸브 바디의 내주면에 밀착되는 실링부(111)에 변형이 발생되기도 하고, 실링부(111)의 변형에 의하여 밸브 바디의 내주면 접촉면과의 실링 효율이 저하되기도 하고, 비록 오링(130)이 삽입되어 이씨는 하나 밸브 디스크(100)의 외주면측 양 실링부(111) 사이의 실링부재(110)는 심재(120)와의 두께가 얇아 이 부위가 갈라지는 문제점이 있다.However, in the butterfly valve of the prior art, the valve disc is rotated by the rotation of the valve disc, and the sealing portion 111, which is in close contact with the inner circumferential surface of the valve body and closely contacts the inner circumferential surface of the valve body, The sealing efficiency with the inner circumferential surface contact surface of the valve body is lowered due to the deformation of the sealing portion 111. Even if the O-ring 130 is inserted, the outer circumferential surface of the valve disc 100, The sealing member 110 between the portions 111 is thin with respect to the core member 120, resulting in a problem that the sealing member 110 is cracked.

등록실용신안 제0378617호(2005.03.03.)Registered Utility Model No. 0378617 (Mar. 3, 2005)

이에 본 발명은 상기한 문제점을 해결하기 위한 것으로서, 본 발명은 밸브 디스크의 밸브 바디에 접촉하는 실링부를 축방향으로 만곡지게 연장 형성되게 함으로써 보강되도록 하여 변형이 방지되도록 하는 버터플라이 밸브를 제공하는데 주된 목적이 있다.SUMMARY OF THE INVENTION The present invention provides a butterfly valve for preventing a deformation by reinforcing a sealing portion which is in contact with a valve body of a valve disk by extending in a direction of an axis, There is a purpose.

또한, 본 발명은 실링부 사이의 외주면으로부터 실링부재의 내부에 매설되는 심재의 외주면과 균일한 두께로서 심재의 외주면이 형성되도록 하여 내구력 향상과 안정된 실링이 이루어질 수 있도록 하는 버터플라이 밸브를 제공하는데 다른 목적이 있다.In addition, the present invention provides a butterfly valve capable of enhancing durability and achieving stable sealing by forming an outer circumferential surface of a core material having a uniform thickness with an outer circumferential surface of a core member embedded in the sealing member from the outer circumferential surface between the sealing portions There is a purpose.

상기한 목적 달성을 위한 본 발명에 따른 버터플라이 밸브는, 원판형으로 이루어지는 밸브 디스크의 심재 외부는 탄성재질의 실링부재에 의해 커버되도록 하며, 상기 실링부재의 외주면 양측단부에 형성되는 양측의 실링부는 직경 방향과 함께 양측의 각 외측면보다 측방으로 돌출되게 만곡지는 형상으로 형성하고, 양 실링부 사이의 실링부재는 심재의 외주면과 동일한 두께로서 형성되도록 한다.In order to achieve the above object, the butterfly valve according to the present invention is characterized in that the outer periphery of the core of the disc-shaped valve disc is covered by a sealing member of elastic material, and both sealing portions formed at both ends of the outer circumferential surface of the sealing member And the sealing member between the two sealing portions is formed to have the same thickness as the outer peripheral surface of the core material.

상기한 구성에 따른 본 발명의 버터플라이 밸브는 밸브 바디의 내주면과 밀착되는 밀착면이 밀착면측으로 만곡지게 형성되도록 하면서 실링부의 변형 방지와 밸브 바디와의 안정된 밀착력 유지가 가능하도록 함으로써 실링부의 내구력과 실링 효율이 향상되도록 한다.The butterfly valve of the present invention according to the present invention can prevent the deformation of the sealing portion and maintain the stable adherence force with the valve body so that the close contact face of the butterfly valve closely contacting the inner circumferential face of the valve body is curved toward the close face side, So that the sealing efficiency is improved.

또한, 본 발명은 양측 실링부간 실링부재의 심재와의 간극을 균일하게 형성되도록 함으로써 심재 외주면측 실링부재의 손상이 방지되도록 하는 효과가 있다.Further, according to the present invention, the gap between the sealing member and the core member is uniformly formed between the sealing members on both sides of the sealing member, thereby preventing damage to the sealing member on the periphery of the core member.

도 1은 종래 기술의 버터플라이 밸브의 밸브 디스크를 예시한 요부 확대 단면도
도 2는 본 발명에 따른 버터플라이 밸브에서 밸브 디스크의 바람직한 실시예를 예시한 사시도
도 3은 본 발명에 따른 버터플라이 밸브에서 밸브 디스크의 단면도
도 4는 본 발명에 따른 버터플라이 밸브의 요부 확대 작동 상태도BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an enlarged cross-sectional view of a valve disk of a prior art butterfly valve,
Figure 2 is a perspective view illustrating a preferred embodiment of a valve disc in a butterfly valve according to the present invention;
3 is a cross-sectional view of a valve disk in a butterfly valve according to the present invention
Fig. 4 is a view showing a main part enlarged operation state of the butterfly valve according to the present invention

이하, 본 발명에 따른 버터플라이 밸브의 바람직한 실시예를 첨부한 도면을 참조하여 보다 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments of the butterfly valve according to the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 버터플라이 밸브에서 디스크 밸브의 바람직한 실시예를 예시한 사시도이고, 도 3은 본 발명에 따른 버터플라이 밸브에서 밸브 디스크의 단면도로서, 본 발명의 버터플라이 밸브는 통상 밸브 바디와 이 밸브 바디의 내부에서 회전 가능하게 구비되는 밸브 디스크(10)로서 이루어지며, 이중 밸브 디스크(10)는 일정 두께의 원판형으로 형성되는 구성이다.FIG. 2 is a perspective view illustrating a preferred embodiment of a disc valve in a butterfly valve according to the present invention, and FIG. 3 is a cross-sectional view of a valve disc in a butterfly valve according to the present invention, And a valve disc 10 rotatably disposed inside the valve body, and the valve disc 10 is formed in a disc shape having a predetermined thickness.

밸브 디스크(10)는 원판형상의 심재(11)와 이 심재(11)의 외부를 감싸는 실링부재(12)로서 이루어지는 구성이다.The valve disc 10 has a disc-like core member 11 and a sealing member 12 which surrounds the core member 11.

이때의 심재(11)는 통상 원판형상의 금속 재질로 이루어지며, 이 심재(11)는 통상 밸브 바디에 형성한 유로의 내경보다는 작게 형성한다.At this time, the core material 11 is generally made of a disc-shaped metal material, and the core material 11 is formed to be smaller than the inner diameter of a flow path normally formed in the valve body.

이런 심재(11)의 외부는 통상 탄성재질의 실링부재(12)에 의해서 커버되도록 한다.The outside of the core member (11) is normally covered by a sealing member (12) of an elastic material.

실링부재(12)는 고무나 연질의 합성수지로 이루어지며, 실링부재(12)의 외주면은 양측단부가 직경 방향으로 연장되게 함으로써 실링부(13)를 형성하도록 한다.The sealing member 12 is made of rubber or soft synthetic resin and the outer peripheral surface of the sealing member 12 is made to extend in both radial directions to form the sealing portion 13.

즉, 실링부재(12)는 외경이 밸브 바디의 유로 내경보다는 작게 형성되도록 하되 실링부재(12)의 외주면 양측단부는 유로의 내경보다는 크게 형성되도록 하여 유로를 폐쇄 시 유로의 내주면에 긴밀하게 밀착되도록 한다.That is, the sealing member 12 is formed such that its outer diameter is smaller than the inner diameter of the passage of the valve body, and both end portions of the outer circumferential surface of the sealing member 12 are formed to be larger than the inner diameter of the passage, do.

이와 같은 밸브 디스크(10)의 구성은 종래와 대동소이하다.The configuration of the valve disc 10 is very similar to that of the conventional valve disc.

다만, 본 발명의 밸브 디스크(10)는 외주면의 양측단부에 형성되는 실링부(13)를 직경 방향과 함께 양측의 외측방으로 만곡지게 함으로써 보강이 이루어지도록 하는데 하나의 특징이 있고, 또한 양측 실링부(13)로부터 폭 중간으로 점차 외경이 축소되는 형상으로 형성되도록 한 양측 실링부(13) 사이의 실링부재(12)에 대해 내부에 매설되는 금속의 심재(11) 외주면이 실링부재(12)와 동일한 형상으로 이루어지게 함으로써 실링부재(12)의 심재(11) 외주면에 이르는 두께가 균일하게 이루어지도록 하는데 또 다른 특징이 있다.However, the valve disc 10 of the present invention is characterized in that the sealing portion 13 formed at both side ends of the outer circumferential surface is bent in the radially outward direction to the outer side of both sides, The outer circumferential surface of the core 11 of the metal embedded in the sealing member 12 between the two side sealing portions 13 formed such that the outer diameter is gradually reduced from the portion 13 to the middle of the width, So that the thickness of the sealing member 12 reaching the outer circumferential surface of the core member 11 is uniform.

이를 좀더 상세하게 설명하면 밸브 디스크(10)의 외주면 양측단부에 구비되는 실링부(13)는 직경 방향으로 그리고 양측의 실링부(13)간 반대 방향의 외측방으로 만곡지게 하면서 직경 방향으로는 밸브 바디의 유로 내경보다는 크고, 외측방으로는 밸브 디스크(10)를 커버하는 실링부재(12)의 외측면보다는 외측으로 돌출되도록 하여 두께가 보다 보강되도록 하는 것이다.More specifically, the sealing portions 13 provided at both ends of the outer peripheral surface of the valve disc 10 are bent radially and outwardly in opposite directions between the sealing portions 13 on both sides, The outer diameter of the valve body 10 is larger than the inner diameter of the passage of the body and the outer side of the valve body 10 is protruded to the outer side than the outer surface of the sealing member 12 covering the valve disk 10 to further reinforce the thickness.

따라서, 실링부(13)는 직경 방향으로 밸브 바디의 유로 내경보다 큰 직경으로 연장되도록 하는 동시에 서로 대응하는 외측 방향으로도 실링부재(12)의 외측면보다 돌출되게 만곡지도록 연장되게 함으로써 실링부(13)를 보다 두텁게 보강되도록 하는 것이다.Therefore, the sealing portion 13 is extended in the radial direction to a diameter larger than the inner diameter of the flow path of the valve body and is extended so as to protrude beyond the outer surface of the sealing member 12 in the outer direction corresponding to each other, 13).

또한, 양측의 실링부(13)간을 연결하는 실링부재(12)는 통상 양측 실링부(13)로부터 폭 중간 부위로 외경이 점차 축소되도록 함으로써 외주면이 내경 중심 방향으로 요입되도록 하여 양측 실링부(13)간 요입시킨 실링부재(12)의 외주면으로 오링(20)이 삽입되도록 하고 있다.The sealing member 12 connecting between the sealing portions 13 on both sides is configured such that the outer diameter is gradually reduced from the two-side sealing portion 13 to the intermediate portion of the width so that the outer peripheral surface is recessed toward the center of the inner diameter, 13 are inserted into the outer circumferential surface of the sealing member 12 in which the O-rings 20 are inserted.

이에 본 발명은 양측의 실링부(13) 사이에서 외경이 요입되도록 한 실링부재(12)의 내부로 매설되는 심재(11)의 외주면이 실링부재(12)의 외주면과 동일한 형상으로 형성되게 함으로써 실링부재(12)의 심재(11)에 외주면에 이르는 두께가 균일하게 이루어지도록 한다.The present invention is characterized in that the outer circumferential surface of the core member 11 embedded in the sealing member 12 having the outer diameter between the sealing portions 13 on both sides is formed in the same shape as the outer circumferential surface of the sealing member 12, The core member 11 of the member 12 is made uniform in thickness to reach the outer circumferential surface.

다시 말해 실링부재(12)의 내부에 매설되는 심재(11)의 외주면이 양측 실링부(13) 사이의 실링부재(12)의 외주면과 동일한 형상으로 형성되게 함으로써 심재(11)의 외주면을 커버하는 실링부재(12)의 두께는 심재(11)의 외주면을 따라 균일한 형상을 갖게 된다.The outer circumferential surface of the core member 11 embedded in the sealing member 12 is formed to have the same shape as the outer circumferential surface of the sealing member 12 between the two side sealing portions 13 to cover the outer circumferential surface of the core member 11 The thickness of the sealing member 12 has a uniform shape along the outer circumferential surface of the core member 11. [

따라서 양측의 실링부(13) 사이에서 실링부재(12)는 심재(11)와의 사이가 균일한 두께로서 형성되게 함으로써 이 부위에서의 실링부재(12)도 보강되도록 한다.Therefore, the sealing member 12 between the sealing portions 13 on both sides is formed to have a uniform thickness with respect to the core member 11, so that the sealing member 12 at this portion is also reinforced.

상기의 구성에 따른 본 발명의 작용에 대해 설명하면 다음과 같다.The operation of the present invention according to the above configuration will be described as follows.

도 4는 본 발명에 따른 버터플라이 밸브의 요부 확대 작동 상태도이다.Fig. 4 is an enlarged operation view of the butterfly valve according to the present invention; Fig.

예시한 바와 같이 본 발명의 버터플라이 밸브는 원판형의 밸브 디스크(10)에서 심재(11)의 외부를 감싸도록 구비되는 실링부재(12)의 외주면 양측으로 형성한 실링부(13)를 직경 방향과 함께 상호 대응하는 측방으로 만곡지게 형성되도록 함으로써 두께가 더욱 보강되도록 하는데 가장 두드러진 특징이 있다.The butterfly valve of the present invention is characterized in that the sealing portion 13 formed on both sides of the outer circumferential surface of the sealing member 12 provided to surround the outer surface of the core member 11 in the disk- So that the thickness is further reinforced.

실링부(13)의 직경 방향과 함께 외측면을 만곡지도록 하면서 두께를 증가시키게 되면 만곡면이 밸브 바디(20)의 유로 내주면에 밀착되면서 보다 넓은 면적으로 항상 밀착되는 동시에 실링부(13)의 밀림이 방지되면서 실링부(13)의 변형과 밸브 바디(20)와의 밀착력 저하를 예방할 수가 있도록 한다.When the thickness of the sealing portion 13 is increased along with the radial direction of the sealing portion 13, the curved surface is always in close contact with the inner peripheral surface of the valve body 20, So that deformation of the sealing portion 13 and deterioration of adhesion between the valve body 20 and the sealing portion 13 can be prevented.

즉 본 발명의 실링부(13)는 밸브 바디(20)의 유로 내주면과 접촉되는 순간에도 접촉면이 만곡진 형상이므로 접촉에 의해 실링부(13)는 종전과 같이 벨브 디스크(10)의 회전방향과 반대측으로 밀려나는 것이 아니라 만곡면이 압착되면서 밀착력이 더욱 향상되도록 하는 동시에 보다 접촉면이 확장되도록 한다.That is, since the sealing portion 13 of the present invention has a curved contact surface even when it comes into contact with the inner circumferential surface of the valve body 20, the sealing portion 13 is brought into contact with the rotational direction of the valve disk 10 The curved surface is squeezed rather than being pushed to the opposite side so that the contact force is further improved and the contact surface is expanded.

따라서 밸브 바디(20)와의 접촉면측으로 실링부(13)를 만곡지도록 하여 보강시키게 되면 실링부(13)가 밸브 바디(20)와의 접촉에 의해 밀림현상이 발생되더라도 복원에 의해서 밸브 바디(20)와의 밀착력은 안정적으로 유지시킬 수가 있게 되므로 안정된 실링을 제공할 수가 있게 된다.Therefore, if the sealing portion 13 is bent and reinforced to the contact surface side with the valve body 20, even if the sealing portion 13 is pressed by the contact with the valve body 20, The adhesive force can be stably maintained, and stable sealing can be provided.

특히, 본 발명은 양 실링부(13) 사이의 실링부재(12)와 심재(11)의 외주면간 간극이 균일하도록 동일한 두께로서 실링부재(12)가 형성되게 함으로써 실링부재(12)의 손상이 방지되도록 하는 동시에 심재(11)를 안정되게 밀폐되도록 한다.Particularly, in the present invention, the sealing member 12 is formed to have the same thickness so that the gap between the sealing member 12 between the sealing portions 13 and the outer peripheral surface of the core member 11 is uniform, And at the same time, the core member 11 is stably closed.

이와 같이 본 발명은 실링부(13)와 함께 양 실링부(13) 사이의 실링부재(12)가 보강되게 밸브 바디(20)의 내주면과 접하는 개폐작용으로 인한 실링성 저하를 방지하도록 하는 동시에 내구력을 증강시켜 개폐 작동성이 안정적으로 유지될 수 있도록 한다.As described above, according to the present invention, the sealability between the sealing portions 13 and the sealing member 12 between the two sealing portions 13 is reinforced so as to prevent the sealability from being lowered due to the opening / closing action of contacting the inner circumferential surface of the valve body 20, So that the opening and closing operability can be stably maintained.

10 : 밸브 디스크 11 : 심재
12 : 실링부재 13 : 실링부
20 : 오링 30 : 밸브 바디10: valve disc 11: core material
12: sealing member 13: sealing member
20: O-ring 30: Valve body

Claims (3)

원판형으로 이루어지는 밸브 디스크(10)의 심재(11) 외부는 탄성재질의 실링부재(12)에 의해 커버되도록 하며, 상기 실링부재(12)의 외주면 양측단부에 형성되는 양측의 실링부(13)는 직경 방향과 함께 양측의 각 외측면보다 측방으로 돌출되게 만곡지는 형상으로 형성하고, 양 실링부(13) 사이의 실링부재(12)는 심재(11)의 외주면과 동일한 두께로서 형성되도록 하는 버터플라이 밸브.
The outer surface of the core member 11 of the disc-shaped valve disc 10 is covered with a sealing member 12 made of an elastic material. The sealing member 13 formed on both sides of the outer circumferential surface of the sealing member 12, And the sealing member 12 between the two sealing portions 13 is formed to have the same thickness as that of the outer peripheral surface of the core 11, Fly valve.
청구항 1에 있어서,
상기 실링부(13)는 직경 방향의 외경이 밸브 바디(30)의 유로(31) 내경보다는 크게 형성되도록 하는 버터플라이 밸브.
The method according to claim 1,
And the sealing portion (13) has an outer diameter in the radial direction larger than an inner diameter of the flow passage (31) of the valve body (30).
청구항 1에 있어서,
상기 실링부재(12)는 양측의 실링부(13)로부터 폭 중간으로 점차 외경이 축소되면서 직경의 중심 방향으로 요입되는 형상으로 형성되도록 하며, 상기 실링부재(12)에 매설되는 상기 심재(11)의 외주면은 상기 실링부재(12)의 외주면과 동일한 형상으로 이루어지고, 상기 심재(11)의 외주면을 감싸는 상기 실링부재(12)는 상기 심재(11)에 대해 균일한 두께로서 형성되는 버터플라이 밸브.
The method according to claim 1,
The sealing member 12 is formed such that the outer diameter of the sealing member 12 gradually decreases toward the middle of the width from the sealing portions 13 on both sides and is recessed in the direction of the center of the diameter and the core member 11 embedded in the sealing member 12, And the sealing member 12 surrounding the outer circumferential surface of the core member 11 is formed in the same shape as the outer circumferential surface of the sealing member 12, .
KR1020160052480A 2016-04-28 2016-04-28 Butterfly valve KR20170123164A (en)

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KR20170123164A true KR20170123164A (en) 2017-11-07

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