KR20150000025U - Flap type butterfly valve for preventing back flow - Google Patents

Flap type butterfly valve for preventing back flow Download PDF

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Publication number
KR20150000025U
KR20150000025U KR2020130005072U KR20130005072U KR20150000025U KR 20150000025 U KR20150000025 U KR 20150000025U KR 2020130005072 U KR2020130005072 U KR 2020130005072U KR 20130005072 U KR20130005072 U KR 20130005072U KR 20150000025 U KR20150000025 U KR 20150000025U
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South Korea
Prior art keywords
valve
valve body
disc
hinges
butterfly valve
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KR2020130005072U
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Korean (ko)
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송재우
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대우조선해양 주식회사
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Priority to KR2020130005072U priority Critical patent/KR20150000025U/en
Publication of KR20150000025U publication Critical patent/KR20150000025U/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
    • F16K1/223—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 with a plurality of 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
    • F16K1/16—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
    • F16K1/221—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 specially adapted operating means therefor
    • 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • F16K15/035—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member with a plurality of 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
    • 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
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/01—Damping of 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles

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

Abstract

본 고안은 플랩타입 역류방지 버터플라이 밸브에 관한 것으로, 유체 이송 배관 상에 접속되는 밸브바디(100), 상기 밸브바디(100)를 관통하여 설치된 밸브축(120), 상기 밸브축(120)에 고정되고 상기 밸브바디(100) 내부에서 회전방향에 따라 상기 밸브바디(100)를 흐르는 유체를 차단하거나 통과시키는 밸브디스크(130), 상기 밸브축(120)의 상단에 고정된 핸들(110)을 포함하는 버터플라이 밸브에 있어서; 상기 밸브디스크(130)의 양측면에는 서로 마주보는 방향으로 접어질 수 있는 역류방지디스크(200)를 구비하여 정방향 유체 이동시에는 밸브바디(100)를 개방하고, 역류시에는 밸브바디(100)를 차단하도록 구성된 것을 특징으로 하는 플랩타입 역류방지 버터플라이 밸브를 제공한다.
본 고안에 따르면, 버터플라이 밸브에 역류 방지 기능이 갖추어짐으로써 배관 이송효율이 향상되고, 배관의 장수명화가 가능하는 효과를 얻을 수 있다.The present invention relates to a flap type backflow prevention butterfly valve, and more particularly, to a flap type backflow prevention butterfly valve that includes a valve body 100 connected to a fluid transfer pipe, a valve shaft 120 installed through the valve body 100, A valve disc 130 which is fixed and blocks or passes a fluid flowing through the valve body 100 according to a rotational direction in the valve body 100; a handle 110 fixed to an upper end of the valve shaft 120; 1. A butterfly valve comprising: The valve disc 130 is provided on both sides thereof with a backflow preventing disc 200 which can be folded in directions opposite to each other to open the valve body 100 when the forward fluid is moved and the valve body 100 when the backward flow is blocked And a flap type backflow preventing butterfly valve is provided.
According to the present invention, since the butterfly valve is equipped with the backflow prevention function, it is possible to improve the pipeline transportation efficiency and to obtain the effect that the life of the piping can be made long.

Description

플랩타입 역류방지 버터플라이 밸브{FLAP TYPE BUTTERFLY VALVE FOR PREVENTING BACK FLOW}FLAP TYPE BUTTERFLY VALVE FOR PREVENTING BACK FLOW BACKGROUND OF THE INVENTION [0001]

본 고안은 플랩타입 역류방지 버터플라이 밸브에 관한 것으로, 보다 상세하게는 정상적인 흐름 상태일 때는 밸브를 개방상태로 유지하다가 역류가 발생되면 자동적으로 밸브가 닫힘으로써 역류 현상을 완벽하게 차단할 수 있도록 개선된 플랩타입 역류방지 버터플라이 밸브에 관한 것이다.
The present invention relates to a flap type backflow prevention butterfly valve, and more particularly, to a flap type backflow prevention butterfly valve which is improved to maintain a valve in an open state in a normal flow state and automatically shut off a backflow when a backflow occurs, Flap type backflow prevention butterfly valve.

일반적으로, 버터플라이 밸브는 흐름방향에 직각으로 설치된 축을 중심으로 원판형의 디스크가 회전하므로서 유로의 개폐를 하는 밸브로서, 다른 형식의 밸브에 비하여 구조가 비교적 간단하다는 장점에 의해 각종 배관 설비에 널리 사용되고 있다.Generally, a butterfly valve is a valve that opens and closes a flow path by rotating a disc-shaped disk about a shaft installed at right angles to the flow direction. The butterfly valve is widely used in various piping facilities due to its relatively simple structure compared to other types of valves. .

이러한 버터플라이 밸브는 원통형상의 밸브의 몸체에 구동부의 작동으로 회전하는 회전축이 설치되고, 상기 밸브 몸체의 일측 내부에는 디스크가 설치되며, 상기 디스크는 디스크 보스에 의하여 회전축에 부착되어 회전축의 회전으로 회동하여 밸브의 개폐작동을 수행하게 구성된다.Such a butterfly valve is provided with a rotary shaft that rotates by the operation of a driving unit on the body of a cylindrical valve, a disc is installed inside one side of the valve body, the disc is attached to the rotary shaft by the disc boss, Thereby performing an opening and closing operation of the valve.

또한, 상기 디스크의 외주면에는 기밀성을 유지하기 위한 디스크 시트가 부착되어 디스크의 회동시 상기 몸체의 내주면에 부착된 밸브 시트와 접촉하게 구성되며, 상기 구동부가 설치된 회전축의 반대쪽을 지지하기 위하여 밸브 몸체에 중공형의 축지지부가 형성되고, 축지지부의 단부에는 엔드 커버가 결합된다.A disc seat for maintaining airtightness is attached to the outer circumferential surface of the disc so as to be in contact with a valve seat attached to the inner circumferential surface of the body when the disc is rotated. In order to support the opposite side of the rotating shaft, A hollow shaft support portion is formed, and an end cover is coupled to an end portion of the shaft support portion.

이와 같은 버터플라이 밸브와 관련한 선행기술로는, 공개실용 제1983-0000108호, 공개실용 제1999-0012670호, 공개특허 제2004-0048806호, 공개특허 제2006-0088146호, 공개특허 제2007-0013354호 등을 포함하여 다수가 개시되어 있다.Prior art relating to such a butterfly valve is disclosed in Korean Utility Model Publication No. 1983-0000108, Publication Practice No. 1999-0012670, Publication No. 2004-0048806, Publication No. 2006-0088146, Publication No. 2007-0013354 And the like are disclosed.

그런데, 상술한 선행기술들은 개폐시 효율적인 제어나 혹은 밸브 동작시 밀봉성, 즉 기밀성을 향상시키기 위한 구조 개선과 관련된 것들이 대부분이다.However, the above-mentioned prior arts are most concerned with effective control during opening and closing, or sealing performance at the time of valve operation, i.e., improvement in structure to improve airtightness.

때문에, 배관 내부에서 역류(Back Flow)가 발생하였을 때 이를 효과적으로 대처할 수 있는 구조 개선이 요구되었다.
Therefore, it is required to improve the structure that can effectively cope with the back flow in the inside of the pipe.

본 고안은 상술한 바와 같은 종래 기술상의 한계점을 감안하여 이를 개선할 필요성에 의해 창안된 것으로, 버터플라이 밸브의 구조를 개선하여 역류 방지기능을 더 갖추도록 함으로써 효율적인 밸브 동작이 가능하도록 하고, 유체 이송 효율을 높이며, 배관 사고를 미연에 방지할 수 있도록 한 플랩타입 역류방지 버터플라이 밸브를 제공함에 그 주된 목적이 있다.
The present invention has been devised in view of the above-mentioned limitations of the prior art, and has been developed in view of the need to improve the above-mentioned drawbacks. The present invention improves the structure of the butterfly valve to further improve the backflow prevention function, A flap type backflow prevention butterfly valve is provided to increase the efficiency and prevent piping accident in advance.

본 고안은 상기한 목적을 달성하기 위한 수단으로, 유체 이송 배관 상에 접속되는 밸브바디(100), 상기 밸브바디(100)를 관통하여 설치된 밸브축(120), 상기 밸브축(120)에 고정되고 상기 밸브바디(100) 내부에서 회전방향에 따라 상기 밸브바디(100)를 흐르는 유체를 차단하거나 통과시키는 밸브디스크(130), 상기 밸브축(120)의 상단에 고정된 핸들(110)을 포함하는 버터플라이 밸브에 있어서; 상기 밸브디스크(130)의 양측면에는 서로 마주보는 방향으로 접어질 수 있는 역류방지디스크(200)를 구비하여 정방향 유체 이동시에는 밸브바디(100)를 개방하고, 역류시에는 밸브바디(100)를 차단하도록 구성된 것을 특징으로 하는 플랩타입 역류방지 버터플라이 밸브를 제공한다.In order to achieve the above-mentioned object, the present invention provides a valve body 100 connected to a fluid transfer pipe, a valve shaft 120 installed through the valve body 100, A valve disc 130 for blocking or passing the fluid flowing through the valve body 100 according to the rotational direction in the valve body 100 and a handle 110 fixed to the upper end of the valve shaft 120 A butterfly valve comprising: The valve disc 130 is provided on both sides thereof with a backflow preventing disc 200 which can be folded in directions opposite to each other to open the valve body 100 when the forward fluid is moved and the valve body 100 when the backward flow is blocked And a flap type backflow preventing butterfly valve is provided.

이때, 상기 역류방지디스크(200)는 상기 밸브디스크(130)의 양측면에 대향되게 설치된 제1,2힌지(212,222)와, 상기 제1,2힌지(212,222)에 고정되어 상기 밸브디스크(130)에 대하여 회전될 수 있는 제1,2역류방지디스크(210,220)와, 상기 제1,2힌지(212,222)에 끼워지며 일단은 상기 밸브디스크(130)에 걸림되고 타단은 상기 제1,2역류방지디스크(210,220)에 각각 걸림 고정된 제1,2토션스프링(214,224)을 포함하여 구성되는 것에도 그 특징이 있다.The backflow preventing disc 200 includes first and second hinges 212 and 222 provided opposite to both sides of the valve disc 130 and a valve plate 130 fixed to the first and second hinges 212 and 222, The first and second hinges 212 and 222 can be rotated with respect to the first and second hinges 212 and 222. The first and second check discs 210 and 220 are fitted to the first and second hinges 212 and 222. One end of the first and second hinges is engaged with the valve disc 130, And the first and second torsion springs 214 and 224 are engaged and fixed to the disks 210 and 220, respectively.

또한, 상기 제1,2역류방지디스크(210,220)가 접어질 때 서로 접촉되는 마주보는 면에는 각각 완충부재(300)가 설치되어 접촉 충돌을 완충시키는 것에도 그 특징이 있다.In addition, when the first and second check valves 210 and 220 are folded, a buffer member 300 is provided on each of the opposite surfaces of the first and second check valves 210 and 220 so as to buffer the contact collision.

뿐만 아니라, 상기 완충부재(300)는 탄성을 갖는 고무 혹은 신축성있는 합성수지를 일정 두께로 붙여 놓은 형태인 것에도 그 특징이 있다.In addition, the buffer member 300 is also characterized in that elastic rubber or stretchable synthetic resin is adhered to a certain thickness.

아울러, 상기 완충부재(300)는 스프링이 내장된 판이 부착된 형태로 이루어진 것에도 그 특징이 있다.
In addition, the buffer member 300 is also characterized in that it has a plate with a spring incorporated therein.

본 고안에 따르면, 버터플라이 밸브에 역류 방지 기능이 갖추어짐으로써 배관 이송효율이 향상되고, 배관의 장수명화가 가능하는 효과를 얻을 수 있다.
According to the present invention, since the butterfly valve is equipped with the backflow prevention function, it is possible to improve the pipeline transportation efficiency and to obtain the effect that the life of the piping can be made long.

도 1은 본 고안에 따른 플랩타입 역류방지 버터플라이 밸브의 개략적인 평면도이다.
도 2는 본 고안에 따른 플랩타입 역류방지 버터플라이 밸브의 개략적인 정면도이다.
도 3은 본 고안에 따른 플랩타입 역류방지 버터플라이 밸브의 개략적인 배면도이다.
도 4는 본 고안에 따른 플랩타입 역류방지 버터플라이 밸브의 작동상태를 보인 모식적인 요부 단면도이다.
도 5는 본 고안에 따른 플랩타입 역류방지 버터플라이 밸브를 구성하는 역류방지디스크의 설치예를 부분 발췌하여 보인 예시적인 단면도이다.1 is a schematic plan view of a flap type backflow prevention butterfly valve according to the present invention.
2 is a schematic front view of a flap type backflow prevention butterfly valve according to the present invention.
3 is a schematic rear view of a flap type backflow prevention butterfly valve according to the present invention.
4 is a schematic cross-sectional view showing the operation of the flap type backflow prevention butterfly valve according to the present invention.
5 is an exemplary cross-sectional view showing an example of installation of a backflow preventing disk constituting a flap type backflow preventing butterfly valve according to the present invention.

이하에서는, 첨부도면을 참고하여 본 고안에 따른 바람직한 실시예를 보다 상세하게 설명하기로 한다.Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

본 고안 설명에 앞서, 이하의 특정한 구조 내지 기능적 설명들은 단지 본 고안의 개념에 따른 실시예를 설명하기 위한 목적으로 예시된 것으로, 본 고안의 개념에 따른 실시예들은 다양한 형태로 실시될 수 있으며, 본 명세서에 설명된 실시예들에 한정되는 것으로 해석되어서는 아니된다.Prior to the description of the present invention, the following specific structures or functional descriptions are merely exemplified for the purpose of describing the embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

또한, 본 고안의 개념에 따른 실시예는 다양한 변경을 가할 수 있고 여러 가지 형태를 가질 수 있으므로, 특정 실시예들은 도면에 예시하고 본 명세서에 상세하게 설명하고자 한다. 그러나, 이는 본 고안의 개념에 따른 실시예들을 특정한 개시 형태에 한정하려는 것이 아니며, 본 고안의 사상 및 기술 범위에 포함되는 모든 변경물, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다.In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. It is to be understood, however, that the appended claims are intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the appended claims, rather than limiting the embodiments in accordance with the concepts herein.

도 1 내지 도 3에 도시된 바와 같이, 본 고안에 따른 플랩타입 역류방지 버터플라이 밸브는 밸브바디(100)를 포함한다.As shown in Figs. 1 to 3, the flap type backflow preventing butterfly valve according to the present invention includes a valve body 100. Fig.

상기 밸브바디(100)는 원통형상의 부재로서, 배관에 접속되어 배관을 통해 흐르는 유체의 흐름을 차단하거나 관류(배관을 따라 흐르는)할 수 있도록 제어하는 밸브 몸체이다.The valve body 100 is a cylindrical member, and is a valve body that is connected to a pipe to control the flow of the fluid flowing through the pipe or block the flow of the fluid flowing through the pipe.

그리고, 상기 밸브바디(100)의 외주면 상측에는 핸들(110)이 설치되고, 상기핸들(110)에는 밸브축(120)이 고정된다.A handle 110 is installed on the outer circumferential surface of the valve body 100 and a valve shaft 120 is fixed to the handle 110.

이때, 상기 밸브축(120)은 밸브바디(100)를 상하로 관통하여 밸브바디(100) 내부에 위치되며, 상기 밸브축(120)에는 밸브디스크(130)가 일체로 구비된다.At this time, the valve shaft 120 is positioned inside the valve body 100 through the valve body 100. The valve shaft 120 is integrally formed with the valve shaft 120.

상기 밸브디스크(130)는 원형판상의 부재로서, 밸브바디(100)의 내경에 맞게 형성되며, 회동방향에 따라 밸브바디(100)를 관류하는 유체를 차단하거나 통과시키게 된다.The valve disc 130 is a member on a circular plate that is formed to fit the inner diameter of the valve body 100 and blocks or passes the fluid passing through the valve body 100 along the rotating direction.

즉, 밸브디스크(130)가 도 1의 도시처럼 유체의 관류방향으로 배열되면 유체가 밸브바디(100)를 통해 흐를 수 있게 되고, 도 4의 (a)처럼 밸브디스크(130)가 유체의 관류방향과 수직하게, 다시 말해 밸브바디(100)의 직경방향으로 배열되면 유체가 흐르지 못하도록 차단하게 된다.That is, when the valve disc 130 is arranged in the direction of the fluid flow as shown in FIG. 1, the fluid can flow through the valve body 100, and the valve disc 130, That is, in the radial direction of the valve body 100, the fluid is blocked from flowing.

이와 같은 상술한 구성 및 작동은 일반적으로 잘 알려져 있는 버터플라이 밸브의 기본 구조이다.Such a configuration and operation as described above is a basic structure of a generally known butterfly valve.

본 발명에서는 이에 더하여, 상기 밸브디스크(130)와 직교되는 방향으로 밸브디스크(130)를 사이에 두고 그 양측에 탄성적으로 접어질 수 있는 역류방지디스크(200)를 더 구비하여 구성된다.In addition, the present invention further includes a backflow preventing disc 200 that can be elastically folded on both sides of the valve disc 130 in a direction orthogonal to the valve disc 130.

이때, 상기 역류방지디스크(200)는 한 쌍으로 구성되며, 밸브디스크(130)를 기준으로 그 일측면에 수직하게 설치되는 제1역류방지디스크(210)와, 그 타측면에 수직하게 설치되는 제2역류방지디스크(220)로 구성되고, 양자는 동일한 구조와 구성을 갖는다.At this time, the backflow preventing disc 200 is composed of a pair, and includes a first backflow preventing disc 210 installed vertically to one side of the valve disc 130, and a second backflow preventing disc 210 vertically installed on the other side And a second backflow prevention disk 220, both having the same structure and configuration.

좀 더 구체적으로, 도 5에 도시된 바와 같이, 밸브축(120)에는 밸브디스크(130)가 상술한 바와 같이 일체로 고정되어 밸브축(120)의 회전시 상기 밸브디스크(130)가 함께 회전될 수 있도록 구성되고, 이 밸브디스크(130)의 양측면에는 상기 밸브축(120)을 기점으로 서로 마주보는 방향으로 접어질 수 있는 제1,2역류방지디스크(210,220)가 설치된다.5, the valve disc 130 is integrally fixed to the valve disc 130 as described above so that when the valve disc 120 rotates, the valve disc 130 rotates together The first and second check valves 210 and 220 are provided on both sides of the valve disc 130 so as to be folded in a direction opposite to the valve shaft 120.

여기에서, 상기 제1,2역류방지디스크(210,220)가 접어질 수 있는 구조는 제1,2힌지(212,222)를 통해 이루어지며, 제1,2힌지(212,222)는 각각 밸브디스크(130)의 양측면에 고정된다.The first and second check valves 210 and 220 are foldable through the first and second hinges 212 and 222 and the first and second hinges 212 and 222 are connected to the first and second hinges 212 and 222, And is fixed to both sides.

아울러, 상기 제1,2힌지(212,222)에는 각각 제1,2토션스프링(214,224)이 설치되는데, 상기 제1,2토션스프링(214,224)의 중심은 상기 제1,2힌지(212,222)에 끼워지고, 일단은 상기 밸브디스크(130)의 각 대응면에 걸림되고, 타단은 제1,2역류방지디스크(210,220) 각 대응면에 걸림되게 배치된다.The first and second torsion springs 214 and 224 are respectively installed on the first and second hinges 212 and 222. The center of the first and second torsion springs 214 and 224 is inserted into the first and second hinges 212 and 222 One end of which is engaged with each corresponding surface of the valve disc 130 and the other end of which is engaged with each corresponding surface of the first and second check valves 210 and 220.

따라서, 제1,2토션스프링(214,224)에 의해 탄성적으로 펼쳐지는 방향쪽으로 밀려드는 정방향 유체 흐름, 즉 정상적인 흐름으로 이루어지되 일정압 이상이 되면 토션스프링의 탄성력을 극복하게 되므로 제1,2역류방지디스크(210,220)가 서로 마주보는 방향으로 접어지면서 도 4의 (c)와 같이, 밸브바디(100) 내부를 개방하여 유체가 흐를 수 있도록 하여 준다.Accordingly, the fluid flows in a normal direction, which is pushed toward the direction in which the first and second torsion springs 214 and 224 are elastically expanded. When the pressure exceeds a predetermined pressure, the elastic force of the torsion spring is overcome. The discs 210 and 220 are folded in the direction opposite to each other, and the valve body 100 is opened to allow the fluid to flow, as shown in FIG. 4 (c).

하지만, 역류가 발생하면 도 4의 (b)와 같이, 탄성복귀력에 의해 제1,2역류방지디스크(210,220)가 원래 위치로 복귀됨은 물론 90°이상은 더 이상 회전되지 못하도록 스토핑된 구조를 갖추고 있기 때문에 밸브바디(100) 내부를 밀폐하여 일종의 체크밸브 기능을 수행하게 되므로 유체의 역류를 차단하게 된다.4 (b), the first and second check discs 210 and 220 are returned to their original positions by the elastic return force, So that the inside of the valve body 100 is sealed to perform a kind of check valve function, thereby blocking back flow of the fluid.

때문에, 유체 역류에 의해 발생되는 이송효율 저하를 막고, 수격에 의한 충격 소음, 국부적인 배관 파열 등을 방지할 수 있어 밸브의 장수명화도 가능하게 한다.Therefore, it is possible to prevent deterioration of the transport efficiency caused by the back flow of the fluid, to prevent impact noise due to water hammer, local pipe rupture, and the like, thereby making it possible to increase the life span of the valve.

덧붙여, 상기 제1,2역류방지디스크(210,220)가 서로 마주보는 방향으로 접어질 때 상호 접촉충돌에 의한 파손이나 충격소음을 방지할 수 있도록 서로 접촉하는 부위에 완충부재(Shock Absorber)(300)를 더 구비할 수 있다.In addition, when the first and second check valves 210 and 220 are folded in the direction opposite to each other, a shock absorber 300 is provided at a portion contacting each other to prevent breakage or shock noise due to mutual contact collision, As shown in FIG.

상기 완충부재(300)는 탄성을 갖는 고무 혹은 신축성있는 합성수지를 일정 두께로 붙여 놓은 형태일 수 있다.The cushioning member 300 may be formed by attaching elastic rubber or stretchable synthetic resin to a predetermined thickness.

물론, 이 이외에도 스프링이 내장된 판을 부착하는 구조일 수도 있다.
Of course, it may be a structure in which a spring-incorporated plate is attached.

100: 밸브바디 110: 핸들
120: 밸브축 130: 밸브디스크
200: 역류방지디스크 300: 완충부재100: valve body 110: handle
120: valve shaft 130: valve disc
200: backflow prevention disk 300: buffer member

Claims (5)

유체 이송 배관 상에 접속되는 밸브바디(100), 상기 밸브바디(100)를 관통하여 설치된 밸브축(120), 상기 밸브축(120)에 고정되고 상기 밸브바디(100) 내부에서 회전방향에 따라 상기 밸브바디(100)를 흐르는 유체를 차단하거나 통과시키는 밸브디스크(130), 상기 밸브축(120)의 상단에 고정된 핸들(110)을 포함하는 버터플라이 밸브에 있어서;
상기 밸브디스크(130)의 양측면에는 서로 마주보는 방향으로 접어질 수 있는 역류방지디스크(200)를 구비하여 정방향 유체 이동시에는 밸브바디(100)를 개방하고, 역류시에는 밸브바디(100)를 차단하도록 구성된 것을 특징으로 하는 플랩타입 역류방지 버터플라이 밸브.
A valve body 100 connected to the fluid transfer pipe, a valve shaft 120 installed to pass through the valve body 100, a valve body 120 fixed to the valve shaft 120, A valve disc 130 for blocking or passing the fluid flowing through the valve body 100, and a handle 110 fixed to an upper end of the valve shaft 120, the butterfly valve comprising:
The valve disc 130 is provided on both sides thereof with a backflow preventing disc 200 which can be folded in directions opposite to each other to open the valve body 100 when the forward fluid is moved and the valve body 100 when the backward flow is blocked Wherein the flap type backflow prevention butterfly valve is configured to prevent the backflow of the flap valve.
청구항 1에 있어서;
상기 역류방지디스크(200)는 상기 밸브디스크(130)의 양측면에 대향되게 설치된 제1,2힌지(212,222)와, 상기 제1,2힌지(212,222)에 고정되어 상기 밸브디스크(130)에 대하여 회전될 수 있는 제1,2역류방지디스크(210,220)와, 상기 제1,2힌지(212,222)에 끼워지며 일단은 상기 밸브디스크(130)에 걸림되고 타단은 상기 제1,2역류방지디스크(210,220)에 각각 걸림 고정된 제1,2토션스프링(214,224)을 포함하여 구성되는 것을 특징으로 하는 플랩타입 역류방지 버터플라이 밸브.
The method of claim 1,
The backflow preventing disk 200 includes first and second hinges 212 and 222 provided opposite to both sides of the valve disk 130 and a first and second hinges 212 and 222 fixed to the first and second hinges 212 and 222, The first and second check discs 210 and 220 are rotatably fitted to the first and second hinges 212 and 222. One end of the first and second hinges 212 and 222 is engaged with the valve disc 130, 210,220, respectively. The flap type backflow preventative butterfly valve according to claim 1, wherein the first and second torsion springs (214, 224)
청구항 2에 있어서;
상기 제1,2역류방지디스크(210,220)가 접어질 때 서로 접촉되는 마주보는 면에는 각각 완충부재(300)가 설치되어 접촉 충돌을 완충시키는 것을 특징으로 하는 플랩타입 역류방지 버터플라이 밸브.
The method of claim 2,
Wherein a buffer member (300) is provided on each of the opposite surfaces of the first and second check valves (210, 220) that are brought into contact with each other when the first and second check valves (210, 220) are folded to buffer the contact collision.
청구항 3에 있어서;
상기 완충부재(300)는 탄성을 갖는 고무 혹은 신축성있는 합성수지를 일정 두께로 붙여 놓은 형태인 것을 특징으로 하는 플랩타입 역류방지 버터플라이 밸브.
The method of claim 3,
Wherein the buffer member (300) is formed by attaching elastic rubber or stretchable synthetic resin to a predetermined thickness.
청구항 3에 있어서;
상기 완충부재(300)는 스프링이 내장된 판이 부착된 형태로 이루어진 것을 특징으로 하는 플랩타입 역류방지 버터플라이 밸브.The method of claim 3,
Wherein the buffer member (300) has a plate with a spring incorporated therein.
KR2020130005072U 2013-06-24 2013-06-24 Flap type butterfly valve for preventing back flow KR20150000025U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180062010A (en) 2016-11-30 2018-06-08 동아대학교 산학협력단 Backflow Prevention Type Butterfly Balve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180062010A (en) 2016-11-30 2018-06-08 동아대학교 산학협력단 Backflow Prevention Type Butterfly Balve

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