KR20200077792A - Non-slam Check Valve - Google Patents

Non-slam Check Valve Download PDF

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Publication number
KR20200077792A
KR20200077792A KR1020180167027A KR20180167027A KR20200077792A KR 20200077792 A KR20200077792 A KR 20200077792A KR 1020180167027 A KR1020180167027 A KR 1020180167027A KR 20180167027 A KR20180167027 A KR 20180167027A KR 20200077792 A KR20200077792 A KR 20200077792A
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South Korea
Prior art keywords
check valve
fluid
disk
disc
closing
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KR1020180167027A
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Korean (ko)
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KR102229349B1 (en
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황은경
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황은경
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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
    • 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
    • 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
    • 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
    • F16K15/021—Check valves with guided rigid valve members the valve member being a movable body around which the medium flows when the valve is open
    • 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
    • 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
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise

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

Abstract

The present invention relates to a check valve for preventing a slam. According to the present invention, the check valve for preventing a slam is characterized in that a front disk (3) and a rear disk (4) are provided in a check valve body (1) to prevent a backflow of a fluid, wherein the front disk functions to prevent the backflow of a fluid and the rear disk functions to decrease the closing speed. According to the present invention, a slam due to the backflow of a fluid can be prevented.

Description

슬램방지용 체크밸브{Non-slam Check Valve}Slam prevention check valve {Non-slam Check Valve}

일반적으로 유체 배관 시스템에서 체크 밸브는 정상적으로 펌프가 작동하는 경우에서의 체크 밸브의 닫힘으로 역류 방지 기능뿐만 아니라 정전과 같은 현상으로 펌프가 급정지되는 경우에도 역류방지를 하는 기능을 가지고 있으며, 특히 펌프의 급정지로 인한 유체 역류로 인하여 체크밸브에 가해지는 충격으로 슬램(slam; 디스크가 닫힐 때 '쾅'하고 닫히면서 순간적인 압력파가 상승하여 연결 부분의 파손 가능성을 높이고, 소음 및 진동을 유발하는 등의 특성) 현상이 발생에 인한 충격으로 배관, 밸브 및 펌프에 가해져서 일부분 기계적 손상 및 장치의 고정된 콘크리트 바닥의 균열이 발생이 되므로 이러한 역류에 인한 슬램발생이 없도록 체크밸브가 천천히 닫히게 하는 방범에 관한 것이다.In general, a check valve in a fluid piping system has a function to prevent backflow when the pump is suddenly stopped due to a phenomenon such as a power failure, as well as a function to prevent backflow by closing the check valve when the pump is operating normally. As a shock applied to the check valve due to the backflow of fluid due to sudden stop, the slam ('slam' when the disc is closed) closes and the instantaneous pressure wave rises to increase the possibility of damage to the connecting part, causing noise and vibration, etc. Characteristics of the phenomenon) Due to the impact of the phenomenon, it is applied to the piping, valves, and pumps, causing mechanical damage and cracking of the fixed concrete floor of the device, so that the check valve is closed slowly so that there is no slam caused by backflow. It is about.

일반적으로 유체 배관 시스템에서 체크 밸브는 정상적으로 펌프가 작동하는 경우에서의 체크 밸브의 닫힘으로 역류 방지 기능뿐만 아니라 정전과 같은 현상으로 펌프가 급정지되는 경우에도 역류방지를 하는 기능을 가지고 있으며, 특히 펌프의 급정지로 인한 유체 역류로 인하여 체크밸브에 가해지는 충격은 매우 크고 그러한 충격은 배관, 밸브 및 펌프에 가해져서 일부분 기계적 손상 및 장치의 고정된 콘크리트 바닥에 가해져서 균열이 발생이 되므로 이러한 역류에도 체크 밸브를 서서히 닫히는 기술이 요구된다.In general, a check valve in a fluid piping system has a function to prevent backflow when the pump is suddenly stopped due to a phenomenon such as a power failure, as well as a function to prevent backflow by closing the check valve when the pump is operating normally. The impact on the check valve is very large due to the backflow of fluid due to sudden stop, and such impact is applied to the piping, valves, and pumps, causing mechanical damage and cracking on the fixed concrete floor of the device. A technique that closes slowly is required.

예컨대, 도 9는 정상적인 이송되는 것으로 펌프(13)에서 체크 밸브(14)를 거쳐서 상부의 저장조(16)로 이송(C)되는 경우이고 도 10은 펌프(13)의 급정지시에 유체가 역류(D)되는 경우이며 이때에 배관과 연결된 수충격을 완화하기 위한 수충격완화 탱크(15)가 설치가 되는 경우에는 수충격완화 탱크에서도 고압의 유체가 체크 밸브로 유입(D)되므로 체크밸브(14)의 닫힘 시에 더욱 슬램이 크게 발생하게 되므로 체크밸브(14)의 닫힘 속도를 늦추게 하는 기술이 요구되어진다.For example, FIG. 9 is a normal conveying case where the pump 13 is transferred (C) from the pump 13 through the check valve 14 to the upper storage tank 16, and FIG. 10 shows fluid flowing back when the pump 13 is suddenly stopped ( D) In this case, in this case, when the water shock relief tank 15 is installed to mitigate the water shock connected to the pipe, the high pressure fluid flows into the check valve in the water shock relief tank (D), so the check valve (14) ), a more slam is generated when closing, so a technique for slowing the closing speed of the check valve 14 is required.

물론 펌프(13)가 정상적으로 회전속도를 늦추면서 정지를 하는 경우에는 유체의 역류(D)의 속도가 빠르지 않으므로 이때는 체크밸브(13)의 닫힘에 영향을 미치는 역류 유체의 힘이 세지 않는 경우에도 체크밸브(13)의 디스크가 정상적으로 닫히는 기술이 요구된다.Of course, when the pump 13 stops while slowing down the rotational speed normally, the speed of the reverse flow D of the fluid is not fast, so at this time, even when the force of the reverse flow fluid that affects the closing of the check valve 13 is not strong, check There is a need for a technique in which the disc of the valve 13 is normally closed.

도 8은 완폐식 체크밸브(도7)의 유입 유체로 디스크가 열리는 도식이고 도 9는 완폐식 체크 밸브(도7)의 유체 역류로 인하여 닫히는 흐름으로 메인디스크(11)가 닫힐 때에 유체의 일부가 중앙의 구멍으로 배출이 되고 완폐용 실린더와 완폐용 추와 연결된 작은 보조디스크(12)가 메인디스크(11)의 구멍을 천천히 막도록 하여 밀폐를 한다, 여기서 큰 유체압력에서도 보조디스크가 천천히 닫히도록 하는 완충용 유압실린더와 완폐용 추는 높은 압력에 견딜 수 있도록 구성이 되어 있으므로 만약에 펌프가 정상적으로 천천히 정지하는 경우에는 역류 유체의 힘이 세지 않으므로 높은 압력에 견딜 수 있도록 구성된 유압실린더는 작은 보조 디스크가 닫히는 것을 방해를 하는 경우가 되면 체크 밸브의 본연의 기능인 역류방지를 기능을 못하게 되는 경우가 발생하게 된다.FIG. 8 is a schematic diagram in which the disc is opened with the inflow fluid of the fully closed check valve (FIG. 7 ), and FIG. 9 is a flow that is closed due to the fluid backflow of the fully closed check valve (FIG. 7 ), and a part of the fluid is closed when the main disc 11 is closed. Is discharged through the central hole, and the small auxiliary disk 12 connected to the cylinder for closing and closing is slowly closed to close the hole in the main disk 11, where the auxiliary disk is closed slowly even at large fluid pressure. The hydraulic cylinder for shock absorbing and the weight for closing and closing are configured to withstand high pressure, so if the pump stops normally and slowly, the hydraulic cylinder configured to withstand the high pressure is not a small auxiliary disk. When it becomes a case to prevent the closing, there is a case in which the function of the check valve, which is the original function of the check valve, cannot be prevented.

또한, 작은 보조디스크에 닫히면서 이물질이 걸리게 되면 유체가 계속 유입되므로 역류방지를 못 하게 하는 문제점이 있다.In addition, when a foreign substance is caught while being closed on a small auxiliary disk, there is a problem in that the fluid is continuously introduced, thereby preventing backflow.

본 발명은 전술한 바와 같은 체크밸브의 문제점을 해결하기 위해 구성한 것으로, 체크밸브로 유체 이동이 급정지가 되는 경우에 역류로 인한 슬램을 방지하고 유체의 흐름을 정상적으로 서서히 중지하여도 밀폐가 되도록 하며, 또한 이물질이 유입이 되더라도 원활하게 배출이 되는 체크밸브를 제공하고자 한다.The present invention is configured to solve the problems of the check valve as described above, and prevents slam due to backflow when the fluid movement to the check valve is suddenly stopped, and ensures sealing even if the flow of the fluid is stopped gradually. In addition, it is intended to provide a check valve that is smoothly discharged even if foreign matter is introduced.

체크밸브 몸체(1)의 내부에 유체 흐름의 역류를 방지하기 위하여 전방디스크(3)와 후방디스크(4) 구비되어 유체 흐름이 역류가 되는 경우에는 전방디스크(3)와 후방디스크(4)가 내려와서 닫히게 되며, 이때 도 2와 같이 전방디스크(3)는 전체가 뚫어진 형태에서 중심부분의 원뿔모형(8)을 구성하여 중심부분의 이외의 방향으로 유체가 원활하게 통과되도록 하고, 후방디스크(4)는 중심부분에 구멍(7)을 구성하여 유체의 역류시에 중심의 구멍(7)으로 유체가 흐르도록 하면서 후방디스크(4)가 닫히는 속도가 낮아지며 후방디스크(4)의 구멍이 전방디스크의 원뿔모형(8) 안으로 유입되면서 천천히 유체의 흐름을 막게 되어 밀폐가 되도록 구성하여 슬램 발생을 없도록 하고, 또한 역류하는 유체에 이물질이 있더라도 후방디스크(4)의 구멍(7)을 통하여 전방디스크(3)의 원뿔모형(8)에 의해 원활한 배출이 이루어지도록 구성되어 슬램 방지, 정상적인 닫힘과 이물질의 원활한 배출을 시키는 체크밸브이다.The front disk 3 and the rear disk 4 are provided inside the check valve body 1 to prevent back flow of the fluid flow. When the fluid flow is reverse flow, the front disk 3 and the rear disk 4 are provided. When it comes down, it is closed. At this time, as shown in Fig. 2, the front disc 3 constitutes a conical model 8 of the central portion in the form in which the whole is perforated, so that the fluid passes smoothly in a direction other than the central portion, and the rear disc ( 4) The hole 7 is formed in the central portion, so that the fluid flows through the central hole 7 when the fluid flows back, while the speed at which the rear disk 4 is closed is lowered and the hole in the rear disk 4 is the front disk. As it flows into the conical model of the (8), the flow of the fluid is slowly blocked and sealed to prevent the occurrence of slam, and even if there is a foreign substance in the backflowing fluid, the front disk (7) through the hole (7) of the rear disk (4) It is a check valve that prevents slam, normal closing, and smooth discharge of foreign substances by constructing smooth discharge by the cone model of 3).

이상과 같이 체크밸브의 내부에는 전방디스크와 후방디스크를 구성으로 이송 유체의 갑작스런 변화에 의하여 체크밸브의 슬램발생을 방지를 하게 되며 정상적인 닫힘에서도 완전한 밀폐기능을 가지며 이물질의 원활한 배출기능을 가진 매우 안전한 체크밸브이다.As described above, the inside of the check valve is composed of a front disk and a rear disk, which prevents the check valve from being slammed by sudden changes in the transport fluid. It has a complete sealing function even under normal closing and is very safe with a smooth discharge function of foreign matter. It is a check valve.

도 1은 본 고안의 실시 예에 따른 내부구성과 전방디스크와 후방디스크를 도시한 부분 사시도.
도 2는 본 고안의 실시 예에 따른 전방디스크와 후방디스크의 역류 흐름의 상태를 도시한 부분 사시도.
도 3은 본 고안의 실시 예에 따른 전방디스크와 후방디스크 내부구성을 도시한 부분 사시도.
도 4는 본 고안의 실시 예에 따른 체크밸브에 유체유입으로 디스크의 열리는 실시에 따른 구체적으로 도시한 부분 사시도.
도 5는 본 고안의 실시 예에 따른 체크밸브에 역류 유체로 전방디스크와 후방디스크가 닫히는 실시에 따른 구체적으로 도시한 부분 사시도.
도 6은 일반적인 완폐식 체크밸브의 내부구성을 도시한 부분 사시도.
도 7 은 일반적인 완폐식 체크밸브에 유체유입으로 디스크의 열리는 실시에 따른 구체적으로 도시한 부분 사시도.
도 8은 일반적인 완폐식 체크밸브에 메인디스크와 보조디스크의 닫히는 실시에 따른 구체적으로 도시한 부분 사시도.
도 9는 유체가 펌프가 정상 가동 중인 상태를 도시한 사시도.
도 10은 유체가 펌프가 비정상적인 정지로 상부의 관로 유체가 역류되는 상태를 도시한 부분 사시도. 1 is a partial perspective view showing an internal configuration and a front disk and a rear disk according to an embodiment of the present invention.
Figure 2 is a partial perspective view showing the state of the reverse flow of the front disk and the rear disk according to an embodiment of the present invention.
Figure 3 is a partial perspective view showing the internal configuration of the front disk and the rear disk according to an embodiment of the present invention.
Figure 4 is a partially perspective view showing in detail according to the opening of the disc by the fluid flow into the check valve according to an embodiment of the present invention.
5 is a partially perspective view showing in detail according to an embodiment in which the front disk and the rear disk are closed with a backflow fluid to the check valve according to the embodiment of the present invention.
Figure 6 is a partial perspective view showing the internal configuration of a typical fully closed check valve.
Figure 7 is a partial perspective view showing in detail according to the opening of the disc by fluid inflow to the general closed check valve.
Figure 8 is a partial perspective view showing in detail according to the closing of the main disk and the auxiliary disk to the general closed check valve.
9 is a perspective view showing a state in which the fluid is in normal operation of the pump.
Figure 10 is a partial perspective view showing a state in which the fluid flows back to the upper pipeline due to the abnormal stop of the fluid pump.

유체 유입부(A)와 유체 유출부(B)와의 사이에 구성된 체크밸브 몸체(1)의 내부에 유체 흐름의 역류를 방지하기 위하여 전방디스크(3)와 후방디스크(4) 구비되어 유체가 정상 흐름의 방향(A에서 B로)으로 흐를 때에는 전방디스크(3)와 후방디스크(4)가 같이 올라가게 되어 열리게 되고, 유체 흐름이 정지가 되는 경우에는 디스크를 미는 힘이 없어지므로 전방디스크(3)와 후방디스크(4)가 내려와서 닫히게 되며, 이때 도 2와 같이 전방디스크(3)는 전체가 뚫어진 형태에서 중심부분의 원뿔모형(8)이 있으면서 고정대(5)로 전방디스크(3)의 주변에 연결되도록 구성하여 중심부분의 이외의 방향으로 유체가 원활하게 통과되도록 전방디스크 구멍(2) 구성하고, 후방디스크(4)는 중심부분에 구멍(7)을 구성하여 유체의 역류시에 중심의 구멍(7)으로 유체가 흐르도록 하면서 후방디스크(4)가 닫히는 속도가 낮아지고 자연적으로 후방디스크(4)의 구멍이 전방디스크의 원뿔모형(8) 안으로 유입되면서 유체의 흐름을 막게 되어 밀폐가 되도록 구성하여 지는 것을 특징으로 하는 체크밸브에서, 체크밸브 내부의 전방디스크(3)는 축(6)에 고정되지 않고 자체 중량에 의해 자연스럽게 닫히도록 구성되고 후방디스크(4)는 축(6)에 고정되며, 체크밸브의 외부로 나온 축(6)은 후방디스크(4)의 완만한 닫힘 작용을 위하여 충격흡수용 장치(9)를 연결하여 후방디스크(4)의 급격히 닫히는 경우에 충격을 흡수하고 또한 완폐용 추와 연결되어 후방디스크(4)가 천천히 닫히도록 하는 체크밸브를 구성함에 있다. The front disk 3 and the rear disk 4 are provided inside the check valve body 1 configured between the fluid inlet part A and the fluid outlet part B to prevent back flow of the fluid, so that the fluid is normal. When flowing in the direction of the flow (from A to B), the front disc 3 and the rear disc 4 rise together to open, and when the fluid flow stops, the force pushing the disc is lost, so the front disc 3 ) And the rear disk (4) come down and close. At this time, the front disk (3) has a conical model (8) of the central portion in the form of a whole being pierced, as shown in FIG. It is configured to be connected to the periphery so that the fluid is smoothly passed in a direction other than the central portion, and the front disc hole 2 is configured, and the rear disc 4 is formed at the central portion at the time of fluid backflow. As the fluid flows through the hole (7), the speed at which the rear disk (4) closes decreases, and naturally, the hole of the rear disk (4) flows into the conical model (8) of the front disk, thereby blocking the flow of fluid. In the check valve characterized in that it is configured to be, the front disk (3) inside the check valve is not fixed to the shaft (6) and is configured to close naturally by its own weight and the rear disk (4) is the shaft (6) Fixed to the shaft, the shaft 6 coming out of the check valve absorbs shock when the rear disc 4 is closed suddenly by connecting the shock absorbing device 9 for a gentle closing action of the rear disc 4 In addition, it is connected to the weight for closing and closing to configure the check valve so that the rear disc 4 is closed slowly.

또한, 역류하는 유체에 이물질이 있더라도 후방디스크(4)의 구멍(7)을 통하여 전방디스크(3)의 원뿔모형(8)에 의해 원활한 배출이 이루어지도록 구성된 체크밸브이다.In addition, even if there is a foreign substance in the backflowing fluid, it is a check valve configured to smoothly discharge through the conical model (8) of the front disc (3) through the hole (7) of the rear disc (4).

1. 체크 밸브 몸체, 2. 전방디스크 구멍, 3. 전방디스크, 4. 후방디스크,
5. 원뿔모형의 고정대, 6. 축, 7. 후방디스크 구멍, 8. 원뿔모형,
9. 충격 흡수용 장치, 10. 추, 11. 메인 디스크, 12. 보조 디스크,
13. 펌프, 14. 체크밸브, 15. 수충격완화 탱크.1. Check valve body, 2. Front disc hole, 3. Front disc, 4. Rear disc,
5. Conical shape holder, 6. Shaft, 7. Rear disc hole, 8. Conical shape,
9. Shock absorbing device, 10. Weight, 11. Main disk, 12. Secondary disk,
13. Pump, 14. Check valve, 15. Water shock relief tank.

Claims (2)

유체 유입 부와 유체 유출 부와의 사이에 구성된 체크밸브의 내부에는 전방디스크와 후방디스크를 구성하여지며, 전방디스크는 전체가 뚫어진 형태에서 중심부분의 원뿔모형이 있으며, 이 원뿔모형은 후방디스크에 고정용 지지대로 고정되도록 구성하여 유체가 중심부분이 외의 부분으로 흐를 수 있도록 하며, 후방디스크는 중심부분에 구멍을 구성하여 중심부분으로 유체가 흐를 수 있도록 구성하여 지는 것을 특징으로 하여, 전방디스크의 원뿔모형이 후방디스크의 구멍으로 들어가게 되면서 겹치게 되면 유체의 흐름을 막게 되어 완전한 밀폐가 되도록 구성하여 지는 것을 특징으로 하는 체크밸브.Inside the check valve configured between the fluid inlet and the fluid outlet, the front disk and the rear disk are composed, and the front disk has a conical model of the central part in the form of a whole being pierced. It is configured to be fixed with a fixing support so that the fluid can flow to the central portion, and the rear disc is configured to make the fluid flow to the central portion by forming a hole in the central portion. Check valve, characterized in that the conical model enters into the hole of the rear disc and overlaps when it overlaps, blocking the flow of fluid and making it completely sealed. 제1항에 있어서,
체크밸브 내부에 있는 전방디스크는 상부에 연결된 축에는 고정되어지지 않고 자체 중량에 의해 자연스럽게 움직이도록 구성되어지고 후방디스크는 전방디스크가 연결된 축에 고정되어지며, 이 축은 체크밸브의 외부에 있는 충격흡수용 장치와 닫힘용 추와 연결되어지도록 하여 후방디스크의 닫힘시에 후방디스크의 급격히 닫히는 것을 방지하고 완전한 밀폐가 되도록 구성하여지는 것을 특징으로 하는 체크밸브.According to claim 1,
The front disk inside the check valve is not fixed to the axis connected to the upper part, but is configured to move naturally by its own weight, and the rear disk is fixed to the axis to which the front disk is connected, and this axis absorbs shock outside the check valve. Check valve, characterized in that it is configured to be connected to the device and the closing weight to prevent the sudden closing of the rear disk when the rear disk is closed and to be completely sealed.
KR1020180167027A 2018-12-21 2018-12-21 Non-slam Check Valve KR102229349B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0547638U (en) * 1991-12-02 1993-06-25 エヌオーケー株式会社 Reed valve
KR970002058A (en) * 1995-06-23 1997-01-24 한승준 Multi-purpose backflow blocker
KR100567927B1 (en) * 2005-09-14 2006-04-05 주식회사 삼진정밀 A check valve with air inhalation-exhaust department
KR20170067752A (en) * 2014-10-07 2017-06-16 비더블유엑스티 엠파워, 인크. Passive integral isolation valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0547638U (en) * 1991-12-02 1993-06-25 エヌオーケー株式会社 Reed valve
KR970002058A (en) * 1995-06-23 1997-01-24 한승준 Multi-purpose backflow blocker
KR100567927B1 (en) * 2005-09-14 2006-04-05 주식회사 삼진정밀 A check valve with air inhalation-exhaust department
KR20170067752A (en) * 2014-10-07 2017-06-16 비더블유엑스티 엠파워, 인크. Passive integral isolation valve

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