KR20050099172A - Open-close valve using screw jack stem and double disc - Google Patents

Open-close valve using screw jack stem and double disc Download PDF

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Publication number
KR20050099172A
KR20050099172A KR1020040024373A KR20040024373A KR20050099172A KR 20050099172 A KR20050099172 A KR 20050099172A KR 1020040024373 A KR1020040024373 A KR 1020040024373A KR 20040024373 A KR20040024373 A KR 20040024373A KR 20050099172 A KR20050099172 A KR 20050099172A
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KR
South Korea
Prior art keywords
valve
stem
disc
screw jack
disk
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KR1020040024373A
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Korean (ko)
Inventor
도형윤
이강주
채호철
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주식회사 광원테크
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Priority to KR1020040024373A priority Critical patent/KR20050099172A/en
Publication of KR20050099172A publication Critical patent/KR20050099172A/en

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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
    • 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
    • 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
    • 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
    • F16K1/42—Valve seats
    • 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
    • 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
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F16K31/506—Mechanical actuating means with screw-spindle or internally threaded actuating means with plural sets of thread, e.g. with different pitch

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Sliding Valves (AREA)

Abstract

본 발명에 의한 스크류 잭 스템과 더블 디스크를 이용한 개폐밸브는 그 내부의 양측에 밸브 시트부가 구비된 밸브 바디(12)와, 상기 밸브 시트부에 밀착/분리되어 개폐하는 두 개의 밸브 디스크(16, 16')와, 상기 밸브 디스크를 작동시키는 디스크 작동 수단(20)으로 이루어지되, 상기 디스크 작동 수단은 외주면 양측에 오른 나사부와 왼 나사부가 형성된 밸브 스템(22)과, 상기 밸브 스템을 회전시킴에 따라 서로 대향하는 방향으로 이동하도록 상기 오른 나사부 및 왼 나사부에 각각 나사결합된 스템 부시(24, 24')와, 상기 스템 부시가 이동함에 따라 상기 두 개의 밸브 디스크를 개폐하도록 상기 스템 부시와 밸브 디스크를 힌지로 연결하는 다수의 링크(26, 26')로 이루어지므로, 스크류 잭 스템과 더블 디스크를 사용하여 유체의 완벽히 차단하고 밸브의 수명을 높인다는 효과가 있다.The on-off valve using a screw jack stem and a double disc according to the present invention has a valve body 12 having a valve seat part at both sides thereof, and two valve discs 16 which are opened / closed in close contact with the valve seat part. 16 '), and a disk actuating means 20 for actuating the valve disc, wherein the disc actuating means rotates the valve stem 22 formed with right and left threaded portions on both sides of the outer circumferential surface thereof, and rotates the valve stem. Stem bushes 24 and 24 'respectively screwed to the right and left threaded portions so as to move in opposite directions to each other, and the stem bush and valve discs to open and close the two valve discs as the stem bushes move. Is made up of a number of links (26, 26 ') that connect the hinges to each other, using a screw jack stem and a double disc to completely shut off the fluid and extend the valve life. It is effective to increase.

Description

스크류 잭 스템과 더블 디스크를 이용한 개폐밸브{open-close valve using screw jack stem and double disc}Open-close valve using screw jack stem and double disc}

본 발명은 개폐밸브에 관한 것으로서, 보다 상세하게는 스크류 잭 스템과 더블 디스크를 이용한 개폐밸브에 관한 것이다.The present invention relates to an on-off valve, and more particularly to an on-off valve using a screw jack stem and a double disc.

종래 수도용 제수밸브 등의 개폐밸브는 도1에 도시한 바와 같이 밸브 바디(2)의 내부에 홈(4)을 형성하여 밸브 디스크(6)를 쐐기 방식으로 끼움하며 상하로 이동시킴에 의해 유체의 흐름을 개폐하는 구조로 되어 있다. 상기 밸브 디스크(6)는 밸브 스템(8)에 고정되어 있다.Conventionally, an on-off valve such as a tap water valve for water is formed in the inside of the valve body 2 as shown in Figure 1 by inserting the valve disk 6 in a wedge manner to move the fluid up and down by The structure opens and closes the flow. The valve disc 6 is fixed to the valve stem 8.

그리고, 밸브 바디(2)와 밸브 디스크(6)가 접촉하는 면에 형성된 바디 시트(도시안됨)와 디스크 시트(도시안됨)는 보편적으로 청동주물로 주조되며 링을 가공하여 밸브 바디(2) 내부와 밸브 디스크(6)에 부착시키고 있으며, 일정기간 밸브를 개폐시 금속재료의 마찰과 이물질이 끼여 누수로 인한 하자 보수 및 수돗물 보전에 악영향을 끼지는 문제점이 있었다. In addition, the body seat (not shown) and the disk seat (not shown) formed on the surface where the valve body 2 and the valve disc 6 contact each other are generally cast in bronze casting and process a ring to process the inside of the valve body 2. And attached to the valve disk (6), there was a problem that the bad effect of the repair and maintenance of the tap water due to leakage due to friction of the metal material and foreign matter when opening and closing the valve for a certain period.

이런 문제점을 보완하기 위해 고무로 성형된 밸브 디스크를 사용하는 소프트실 방식의 개폐밸브가 개발되어 상수도에 널리 사용되고 있으나, 장기간 방치시 고무가 신축성을 잃어 유체를 완벽히 차단하지 못한다는 문제점이 있었다.In order to compensate for this problem, a soft seal type valve using a valve disk molded of rubber has been developed and widely used in waterworks, but there has been a problem that rubber does not completely block fluid due to loss of elasticity when left for a long time.

본 발명은 상기한 바와 같은 문제점을 해결하기 위해 이루어진 것으로서, 본 발명의 목적은 스크류 잭 스템과 더블 디스크를 사용하여 유체의 완벽히 차단하는 개폐밸브를 제공하는 데 있다.The present invention has been made to solve the above problems, and an object of the present invention is to provide an on-off valve that completely blocks the fluid using a screw jack stem and a double disk.

상기 목적을 달성하기 위한 본 발명에 의한 개폐밸브는, 그 내부의 양측에 밸브 시트부가 구비된 밸브 바디와, 상기 밸브 시트부에 밀착/분리되어 개폐하는 두 개의 밸브 디스크와, 상기 밸브 디스크를 작동시키는 디스크 작동 수단으로 이루어지되, 상기 디스크 작동 수단은 외주면 양측에 오른 나사부와 왼 나사부가 형성된 밸브 스템과, 상기 밸브 스템을 회전시킴에 따라 서로 대향하는 방향으로 이동하도록 상기 오른 나사부 및 왼 나사부에 각각 나사결합된 스템 부시와, 상기 스템 부시가 이동함에 따라 상기 두 개의 밸브 디스크를 개폐하도록 상기 스템 부시와 밸브 디스크를 힌지로 연결하는 다수의 링크로 이루어지는 것을 특징으로 한다.In order to achieve the above object, an on / off valve according to the present invention includes a valve body provided with a valve seat on both sides thereof, two valve disks that are opened / closed in close contact with the valve seat, and the valve disk is operated. The disk actuating means comprises a valve stem having right and left threaded portions formed on both sides of the outer circumferential surface thereof, and the right screwed portion and the left screwed portion, respectively, to move in opposite directions as the valve stem is rotated. And a plurality of links connecting the stem bush and the valve disc by a hinge so as to open and close the two valve discs as the stem bush moves.

상기 밸브 디스크는 금속재로 되어 있고, 상기 밸브 시트부는 밸브 바디의 유체 입구 및 유체 출구에 부착된 테프론 재질로 된 시트부재로 되어 있는 것이 바람직하다.Preferably, the valve disc is made of metal, and the valve seat portion is a seat member made of Teflon material attached to the fluid inlet and the fluid outlet of the valve body.

상기 밸브 시트부에서 상기 밸브 디스크가 밀착하는 면은 경사면으로 되어 있을 수도 있다.The surface in which the valve disk is in close contact with the valve seat may be an inclined surface.

이하, 본 발명의 실시예에 대하여 첨부도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도2는 본 발명에 의한 개폐밸브의 종단면도를 나타나고, 도3은 도2의 디스크 작동 수단을 나타내는 사시도이다.Figure 2 shows a longitudinal cross-sectional view of the on-off valve according to the present invention, Figure 3 is a perspective view showing the disk operating means of Figure 2;

도시한 바와 같이 본 발명에 의한 개폐밸브는 그 내부의 양측에 밸브 시트부(14, 14')가 구비된 밸브 바디(12)와, 상기 밸브 시트부(14, 14')에 밀착/분리되어 개폐하는 두 개의 밸브 디스크(16, 16')와, 상기 밸브 디스크(16, 16')를 작동시키는 디스크 작동 수단(20)으로 이루어진다.As shown in the drawing, the on / off valve according to the present invention is in close contact with and separated from the valve body 12 having the valve seats 14 and 14 'provided at both sides thereof, and the valve seats 14 and 14'. It consists of two valve discs 16 and 16 'for opening and closing and a disk actuating means 20 for actuating the valve discs 16 and 16'.

상기 디스크 작동 수단(20)은 외주면 양측에 오른 나사부(22a)와 왼 나사부(22b)가 형성된 밸브 스템(22)과, 상기 밸브 스템(22)을 회전시킴에 따라 서로 대향하는 방향으로 이동하도록 상기 오른 나사부(22a) 및 왼 나사부(22b)에 각각 나사결합된 스템 부시(24, 24')와, 상기 스템 부시(24, 24')가 이동함에 따라 상기 두 개의 밸브 디스크(16, 16')를 개폐하도록 상기 스템 부시(24, 24')와 밸브 디스크(16, 16')를 힌지로 연결하는 다수의 링크(26, 26')로 이루어진다.The disc actuating means 20 includes a valve stem 22 having a right screw portion 22a and a left screw portion 22b formed on both sides of the outer circumferential surface thereof, and moving in a direction opposite to each other as the valve stem 22 is rotated. Stem bushes 24 and 24 'screwed to the right threaded portion 22a and left threaded portion 22b, respectively, and the two valve discs 16 and 16' as the stem bushes 24 and 24 'move. It consists of a plurality of links 26, 26 'which hingedly connect the stem bushes 24, 24' and the valve discs 16, 16 'with openings.

상기 밸브 바디(12)의 양단은 플랜지가 형성되어 볼트 및 도시하지 않은 패킹에 의해 파이프(P)가 고정되어 유체의 누설이 방지되게 되어 있다. 그리고 밸브 바디(12)의 상측에는 상기 밸브 스템(22)을 지지하는 지지부시(28)를 수용하는 캡부재(30)가 체결되어 있다. 상기 지지부시(28)는 상기 밸브 바디(12)의 외측으로 돌출한 밸브 스템(22) 부위에 오링을 매개로 설치되어 있다.Both ends of the valve body 12 are flanged to fix the pipe P by bolts and packing not shown, thereby preventing leakage of fluid. And the upper side of the valve body 12, the cap member 30 for receiving the support bush 28 for supporting the valve stem 22 is fastened. The support bush 28 is provided at the site of the valve stem 22 protruding outward from the valve body 12 via an O-ring.

상기 밸브 시트부(14, 14')는 상기 밸브 바디(12)의 유체 입구 및 유체 출구에 부착된 테프론 재질로 된 시트부재로 되어 있다.The valve seat portions 14, 14 ′ are seat members made of Teflon material attached to the fluid inlet and the fluid outlet of the valve body 12.

상기 밸브 디스크(16, 16')는, 원판형태로서 금속재로 되어 있으며 상기 밸브 시트부(14, 14')에 밀착하는 그 후면에는 힌지핀(32, 32')이 구비된 돌출부(16a, 16'a)가 형성되어 있다.The valve discs 16, 16 'are made of metal in the form of discs, and projections 16a, 16 provided with hinge pins 32, 32' on their rear surfaces, which are in close contact with the valve seats 14, 14 '. 'a) is formed.

상기 밸브 스템(22)은 그 상측부가 상기 지지부시(28)에 의해 지지되는 한편 밸브 바디(12)의 내부로 관통하여 상기 밸브 디스크(16, 16')를 작동시키는 작동봉이다.The valve stem 22 is an actuating rod whose upper side is supported by the support bush 28 while penetrating into the valve body 12 to operate the valve discs 16 and 16 '.

상기 밸브 스템(22)의 오른나사부(22a)와 왼나사부(22b)에 각각 나사결합된 스템부시(24, 24')에는 그 양측면에서 링크(26, 26' : 전체 4개)가 각각 돌출하여 상기 힌지(32, 32')에 힌지결합되어 있다. 이 스템부시(24, 24')의 양측면에는 상기 링크(26, 26')가 결합되도록 힌지핀(34, 34')이 구비된 돌출부(24a, 24'a)가 형성되어 있다.In the stem bushes 24 and 24 'which are respectively screwed to the right hand thread 22a and the left hand thread 22b of the valve stem 22, links 26 and 26' (four in total) are protruded from both sides thereof. It is hinged to the hinges 32 and 32 '. On both sides of the stem bushes 24 and 24 ', projections 24a and 24'a are provided with hinge pins 34 and 34' so that the links 26 and 26 'are coupled.

이와 같이 구성된 본 발명에 의한 개폐밸브에서, 밸브 스템(22)의 상단에 공구를 끼우거나 핸들을 끼워 돌리면, 오른나사(22a)에 나사결합된 스템부시(24)와 왼사나부(22b)에 나사결합된 스템부시(24')가 서로 반대방향이나 대향하는 방향으로 이동하면서 링크(26, 26')가 기울어진다. 따라서, 링크(26, 26')에 힌지결합된 밸브 디스크(16, 16')가 밸브 시트부(14, 14')에 밀착/분리되어 밸브를 여닫게 되어 밸브의 지수능력을 안정하게 유지시키고 완벽하게 지수할 수 있게 하여 누수로 인한 경제적 손실을 발생하지 않게 하고 맑은 물을 보전한다는 효과가 있다.In the opening / closing valve according to the present invention configured as described above, when the tool is inserted into the upper end of the valve stem 22 or the handle is turned, the stem bush 24 and the left screw part 22b screwed to the right screw 22a are rotated. The links 26, 26 'are tilted as the screwed stem bushes 24' move in opposite or opposite directions. Accordingly, the valve discs 16 and 16 'hinged to the links 26 and 26' are in close contact with and separated from the valve seat portions 14 and 14 'to open and close the valves, thereby maintaining the valve's water capacity stable. It can be perfectly indexed to prevent economic losses from leaks and to preserve clean water.

그리고, 종래 고무로 성형된 밸브 디스크에 비하면, 테프론재로 된 밸브 시트부(14, 14')에 금속재로 된 밸브 디스크(16, 16')가 서로 밀착하게 되어, 지수력을 한층 높이고 장기간 사용시 재질의 변형이 없이 안전하고 오래도록 사용할 수 있다.And, compared to the valve disk formed of conventional rubber, the valve disks 16 and 16 'made of metal are in close contact with each other to the valve seat portions 14 and 14' made of Teflon, so that the exponential force is further increased and used for a long time. It can be used safely and long time without any material deformation.

도4는 본 발명의 제2실시예에 의한 스크류 잭 스템과 더블 디스크를 이용한 개폐밸브이다. 도시한 바와 같이 본 실시예는 밸브 시트부(114, 114')가 비스듬하게(하측이 더 돌출됨) 형성되어 있다. 즉, 상기 밸브 시트부(114, 114')에서 상기 밸브 디스크(16, 16')가 밀착하는 면은 경사면으로 되어 있다.4 is an on / off valve using a screw jack stem and a double disc according to a second embodiment of the present invention. As shown in the figure, the valve seat portions 114 and 114 'are formed obliquely (the lower side protrudes further). That is, the surface in which the valve disks 16 and 16 'are in close contact with the valve seat portions 114 and 114' is an inclined surface.

나머지 구성은 도1실시예(도2 참조)의 구성과 동일하다. 본 실시예에서는 밸브를 닫을 때 밸브 스템(22)의 상단에 공구를 끼우거나 핸들을 끼워 돌리면, 밸브 디스크(16, 16')의 하단이 밸브 시트부(114, 114')에 먼저 닿아 기울어지면서 밸브 디스크(16, 16')의 상단이 밸브 시트부(114, 114')에 닿아 유로를 밀폐하므로 작동이 원할하고 지수능력을 높인다.The rest of the configuration is the same as that of the embodiment of Fig. 1 (see Fig. 2). In this embodiment, when closing the valve, if the tool is inserted into the upper end of the valve stem 22 or the handle is turned, the lower end of the valve discs 16 and 16 'first touches the valve seat portions 114 and 114' and tilts. The upper ends of the valve discs 16 and 16 'contact the valve seat portions 114 and 114' to seal the flow path so that operation is smooth and the exponential capacity is increased.

본 발명에 의한 개폐밸브는, 스크류 잭 스템과 더블 디스크를 사용하여 유체의 완벽히 차단하고 밸브의 수명을 높인다는 효과가 있다.The on-off valve according to the present invention has the effect of completely blocking the fluid and increasing the life of the valve by using a screw jack stem and a double disc.

도1은 종래 개폐밸브를 나타내는 반단면도,1 is a half sectional view showing a conventional on-off valve;

도2는 본 발명에 의한 개폐밸브의 종단면도,2 is a longitudinal sectional view of the on-off valve according to the present invention;

도3은 도2의 디스크 작동 수단을 나타내는 사시도,3 is a perspective view showing the disk operating means of FIG.

도4는 본 발명에 의한 개폐밸브의 다른 예를 나타낸 종단면도이다.Figure 4 is a longitudinal sectional view showing another example of the on-off valve according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

12 : 밸브 바디 14, 14' : 밸브 시트부12: valve body 14, 14 ': valve seat portion

16, 16' : 밸브 디스크 20 : 디스크 작동수단16, 16 ': valve disk 20: disk operating means

22 : 밸브 스템 24, 24' : 스템 부시22: valve stem 24, 24 ': stem bush

26, 26' : 링크 28 : 지지부시26, 26 ': Link 28: Support bush

34, 34' : 핀34, 34 ': pin

Claims (3)

그 내부의 양측에 밸브 시트부가 구비된 밸브 바디와, 상기 밸브 시트부에 밀착/분리되어 개폐하는 두 개의 밸브 디스크와, 상기 밸브 디스크를 작동시키는 디스크 작동 수단으로 이루어지되, It consists of a valve body provided with a valve seat on both sides of the inside, two valve disks to be opened and closed close to the valve seat portion, and a disk operating means for operating the valve disk 상기 디스크 작동 수단은 외주면 양측에 오른 나사부와 왼 나사부가 형성된 밸브 스템과, 상기 밸브 스템을 회전시킴에 따라 서로 대향하는 방향으로 이동하도록 상기 오른 나사부 및 왼 나사부에 각각 나사결합된 스템 부시와, 상기 스템 부시가 이동함에 따라 상기 두 개의 밸브 디스크를 개폐하도록 상기 스템 부시와 밸브 디스크를 힌지로 연결하는 다수의 링크로 이루어지는 것을 특징으로 하는 스크류 잭 스템과 더블 디스크를 이용한 개폐밸브.The disk operating means includes a valve stem having a right threaded portion and a left threaded portion formed at both sides of an outer circumferential surface thereof, a stem bush respectively screwed to the right threaded portion and the left threaded portion so as to move in opposite directions as the valve stem is rotated, An on / off valve using a screw jack stem and a double disc, comprising a plurality of links hingedly connecting the stem bush and the valve disc to open and close the two valve discs as the stem bush moves. 제1항에 있어서,The method of claim 1, 상기 밸브 디스크는 금속재로 되어 있고, The valve disc is made of metal, 상기 밸브 시트부는 밸브 바디의 유체 입구 및 유체 출구에 부착된 테프론 재질로 된 시트부재로 되어 있는 것을 특징으로 하는 스크류 잭 스템과 더블 디스크를 이용한 개폐밸브.And the valve seat part is a teflon seat member attached to the fluid inlet and the fluid outlet of the valve body. 제1항에 있어서,The method of claim 1, 상기 밸브 시트부에서 상기 밸브 디스크가 밀착하는 면은 경사면으로 되어 있는 것을 특징으로 하는 스크류 잭 스템과 더블 디스크를 이용한 개폐밸브.An on-off valve using a screw jack stem and a double disc, characterized in that the surface in which the valve disk is in close contact with the valve seat portion is an inclined surface.
KR1020040024373A 2004-04-09 2004-04-09 Open-close valve using screw jack stem and double disc KR20050099172A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008052268A2 (en) * 2006-10-31 2008-05-08 Alcoa Of Australia Limited Valve operation
KR101019746B1 (en) * 2010-11-19 2011-03-08 (주)덕원기전 Water goggle valve
KR101139789B1 (en) * 2011-07-26 2012-04-26 서광공업 주식회사 Butterfly valve having moving disc
CN104712772A (en) * 2015-01-23 2015-06-17 北京航天试验技术研究所 Bi-directional seal low-flow-resistance stop valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008052268A2 (en) * 2006-10-31 2008-05-08 Alcoa Of Australia Limited Valve operation
WO2008052268A3 (en) * 2006-10-31 2008-10-02 Alcoa Australia Valve operation
AU2007314155B2 (en) * 2006-10-31 2013-06-20 Alcoa Of Australia Limited Valve operation
KR101019746B1 (en) * 2010-11-19 2011-03-08 (주)덕원기전 Water goggle valve
KR101139789B1 (en) * 2011-07-26 2012-04-26 서광공업 주식회사 Butterfly valve having moving disc
US8807526B2 (en) 2011-07-26 2014-08-19 Seokwang Mfg Co., Ltd. Butterfly valve having moving disc
CN104712772A (en) * 2015-01-23 2015-06-17 北京航天试验技术研究所 Bi-directional seal low-flow-resistance stop valve

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