CN202659991U - Slow-closing check valve - Google Patents

Slow-closing check valve Download PDF

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Publication number
CN202659991U
CN202659991U CN2012202558574U CN201220255857U CN202659991U CN 202659991 U CN202659991 U CN 202659991U CN 2012202558574 U CN2012202558574 U CN 2012202558574U CN 201220255857 U CN201220255857 U CN 201220255857U CN 202659991 U CN202659991 U CN 202659991U
Authority
CN
China
Prior art keywords
valve
flap
seat
spring
spring seat
Prior art date
Application number
CN2012202558574U
Other languages
Chinese (zh)
Inventor
陈建华
郑开省
陈世伟
郑盛丰
Original Assignee
福建海洋铜业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 福建海洋铜业有限公司 filed Critical 福建海洋铜业有限公司
Priority to CN2012202558574U priority Critical patent/CN202659991U/en
Application granted granted Critical
Publication of CN202659991U publication Critical patent/CN202659991U/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
    • F16K15/00—Check valves
    • F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a helicoidal spring

Abstract

The utility model relates to a fluid control valve and provides a slow-closing check valve which is simple in structure, low in cost, energy-saving, small in water hammer noise in closing, good in sealing effect, capable of effectively preventing a medium from leaking and long in service life. The slow-closing check valve comprises a valve body, a valve cover, a valve flap and a valve rod. The valve body is provided with a water inlet and a water outlet along the axial direction, the valve body located at adjacent position of the water inlet and the water outlet is provided with a valve seat, the valve seat is provided with a valve port communicated with the water inlet and the water outlet, the valve cover is arranged above the valve body, and the valve flap is arranged on the valve port of the valve seat through the pressure of a medium fluid in an openable-closable mode. The fluid control valve further comprises a spring seat, a spring and a piston, wherein the spring seat is fixedly arranged above the valve flap in the valve body, one end of the valve rod penetrates through the spring seat to be connected with the valve flap, the spring is arranged between the spring seat and the valve flap, the piston is fixedly arranged at the end of the valve rod close to the valve cover and can be arranged between the valve cover and the spring seat in the valve body in a vertical-moving mode.

Description

A kind of buffer valve

Technical field

The utility model relates to a kind of fluid control valve, particularly a kind of buffer valve.

Background technique

Safety check claims again one-way valve or check valve, and its effect is to prevent that the medium in the pipeline from flowing backwards, and is widely used in the fluid line.

Existing Lift check valve, mainly comprise valve body, valve gap, flap and valve rod, described valve body is provided with water intake and water outlet vertically, described valve body is provided with valve seat between water intake and water outlet, have the valve port that connects water intake and water outlet on the described valve seat, described valve gap is located at the top of the above valve seat of valve body, but on the valve port of being located at valve seat of described flap by the pressure folding of medium fluid, described bonnet lower is provided with guide holder, one end of described valve rod is telescopic to be located in the guide holder of valve gap, the other end is fixedly connected with flap, when the pressure of water intake during greater than the pressure of water outlet, thereby pressure medium can make valve rod move upward and wash flap open, pass through smoothly, when the pressure of water outlet during greater than the pressure of water intake, flap is closed under the effect of refluence medium and deadweight, its sealing surface and sealing surface of seat closely cooperate, and play the effect that stops flowing medium to flow backwards.Existing Lift check valve can not be alleviated the instantaneous pressure of water intake, can not make media flow constant, not have energy-conservation effect, the speed of flap generally lags behind the speed that medium flows backwards when closing, still have the part medium counter flow, easily produce the phenomenon of water hammer and pneumatic hammer, the sound is large, poor sealing performance, working life is short, need larger reverse pressure when closing, the pressure of water outlet hour in valve body still can produce leakage phenomenon.

Summary of the invention

For the problems referred to above, the utility model proposes a kind of simple in structure, cost is low, energy-conservation, water hammer noise is little when closing, good sealing effect can effectively prevent dielectric leakage, long service life buffer valve.

For solving this technical problem, the utility model is taked following scheme: a kind of buffer valve, comprise valve body, valve gap, flap and valve rod, described valve body is provided with water intake and water outlet vertically, the adjacent place of the friendship of described valve body between water intake and water outlet is provided with valve seat, have the valve port that connects water intake and water outlet on the described valve seat, described valve gap is located at the valve body top, but on the valve port of being located at valve seat of described flap by the pressure folding of medium fluid, also comprise spring seat, spring and piston, described spring seat is fixedly arranged on the top of described flap in the valve body, one end of described valve rod passes spring seat and is connected with flap, described spring is located between spring seat and the flap, and described piston is fixedly arranged on valve rod near on that end of valve gap, but and being located in the valve body between the described valve gap and spring seat of knee-action.

Further improvedly be: described valve gap top also is provided with the aperture regulator, and an end of described aperture regulator links to each other with valve rod.

By adopting the aforementioned techniques scheme; the beneficial effects of the utility model are: this Novel slow shut check valve; also comprise spring seat; spring and piston; described spring seat is fixedly arranged on the top of described flap in the valve body; one end of described valve rod passes spring seat and is connected with flap; described spring is located between spring seat and the flap; described piston is fixedly arranged on valve rod near on that end of valve gap; but and being located in the valve body between the described valve gap and spring seat of knee-action; when the pressure of water intake in the valve body during greater than the pressure of water outlet; pressure medium can be washed pressure that flap overcomes spring open and piston and valve rod be moved upward pass through smoothly; spring can be alleviated the instantaneous pressure of water intake; work to regulate current; has energy-conservation effect; when the flow of fluid changes; the pressure of the telescopic variation available buffer fluid of spring; make media flow constant; has quiet effect; when water outlet pressure during greater than water intake pressure; compressed spring return function; the elastic force of spring return function and the pressure of adverse current act on flap simultaneously; make the fast downward throttle down of flap; prevent the water hammer and the pneumatic hammer that produce because of adverse current; can protect the pipeline security of system; prolong the working life of valve body, the pressure of water outlet hour in valve body can not produce leakage phenomenon yet.

Description of drawings

Fig. 1 is the utility model example structure schematic diagram.

Embodiment

Now with specific embodiment the utility model is further specified by reference to the accompanying drawings.

With reference to figure 1; the present embodiment discloses a kind of buffer valve; comprise valve body 1; valve gap 2; flap 3; valve rod 4; spring seat 5; spring 6 and piston 7; described valve body 1 is provided with water intake 11 and water outlet 12 vertically; the adjacent place of the friendship of described valve body 1 between water intake 11 and water outlet 12 is provided with valve seat 13; have the valve port 131 that connects water intake and water outlet on the described valve seat 13; described valve gap 2 is located at valve body 1 top; but on the valve port of being located at valve seat 13 131 of described flap 3 by the pressure folding of medium fluid; described spring seat 5 is fixedly arranged on the top of valve body 1 interior described flap 3; one end of described valve rod 4 passes spring seat 5 and is connected with flap 3; described spring 6 is located between spring seat 5 and the flap 3; described piston 7 is fixedly arranged on valve rod 4 near on that end of valve gap 2 by nut 8; but and being located between valve body 1 interior described valve gap 2 and the spring seat 5 of knee-action; when the pressure of water intake in the valve body during greater than the pressure of water outlet; pressure medium can be washed pressure that flap overcomes spring open and piston and valve rod be moved upward pass through smoothly; spring can be alleviated the instantaneous pressure of water intake; work to regulate current; has energy-conservation effect; when the flow of fluid changes; the pressure of the telescopic variation available buffer fluid of spring; make media flow constant; has quiet effect; when water outlet pressure during greater than water intake pressure; compressed spring return function; the elastic force of spring return function and the pressure of adverse current act on flap simultaneously; make the fast downward throttle down of flap; prevent the water hammer and the pneumatic hammer that produce because of adverse current; can protect the pipeline security of system; prolong the working life of valve body, the pressure of water outlet hour in valve body can not produce leakage phenomenon yet.

Described valve gap 2 tops also are provided with aperture regulator 9, and an end of described aperture regulator links to each other with valve rod, and the aperture regulator can make piston and valve rod move downward or upward, thereby adjust the aperture of flap.

The above record, only for utilizing the embodiment of this origination techniques content, modification, variation that any those skilled in the art use this creation to do all belong to the claim that this creation is advocated, and are not limited to those disclosed embodiments.

Claims (2)

1. buffer valve, comprise valve body, valve gap, flap and valve rod, described valve body is provided with water intake and water outlet vertically, the adjacent place of the friendship of described valve body between water intake and water outlet is provided with valve seat, have the valve port that connects water intake and water outlet on the described valve seat, described valve gap is located at the valve body top, but on the valve port of being located at valve seat of described flap by the pressure folding of medium fluid, it is characterized in that: also comprise spring seat, spring and piston, described spring seat is fixedly arranged on the top of described flap in the valve body, one end of described valve rod passes spring seat and is connected with flap, described spring is located between spring seat and the flap, described piston is fixedly arranged on valve rod near on that end of valve gap, but and being located in the valve body between the described valve gap and spring seat of knee-action.
2. buffer valve according to claim 1 is characterized in that: described valve gap top also is provided with the aperture regulator, and an end of described aperture regulator links to each other with valve rod.
CN2012202558574U 2012-05-31 2012-05-31 Slow-closing check valve CN202659991U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012202558574U CN202659991U (en) 2012-05-31 2012-05-31 Slow-closing check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012202558574U CN202659991U (en) 2012-05-31 2012-05-31 Slow-closing check valve

Publications (1)

Publication Number Publication Date
CN202659991U true CN202659991U (en) 2013-01-09

Family

ID=47454900

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012202558574U CN202659991U (en) 2012-05-31 2012-05-31 Slow-closing check valve

Country Status (1)

Country Link
CN (1) CN202659991U (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103759050A (en) * 2014-01-17 2014-04-30 哈电集团哈尔滨电站阀门有限公司 Novel check valve controlled to be closed
CN104455584A (en) * 2014-11-25 2015-03-25 大连大高阀门股份有限公司 Main water feed check valve
CN104976392A (en) * 2015-06-04 2015-10-14 许炎章 Right-angled type stop check valve for industrial refrigeration
CN105473916A (en) * 2013-07-17 2016-04-06 汉斯格罗欧洲公司 Sanitary reversing valve
CN105805370A (en) * 2016-06-02 2016-07-27 福建省海洋阀门科技有限公司 Adjusting valve with self-sealing function
CN106870779A (en) * 2017-04-05 2017-06-20 李祥庆 Protecting against shock lift check valve
CN107489814A (en) * 2017-09-21 2017-12-19 安徽荣达阀门有限公司 A kind of new dual spring regulation Slow Close Valve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105473916A (en) * 2013-07-17 2016-04-06 汉斯格罗欧洲公司 Sanitary reversing valve
CN103759050A (en) * 2014-01-17 2014-04-30 哈电集团哈尔滨电站阀门有限公司 Novel check valve controlled to be closed
CN104455584A (en) * 2014-11-25 2015-03-25 大连大高阀门股份有限公司 Main water feed check valve
CN104976392A (en) * 2015-06-04 2015-10-14 许炎章 Right-angled type stop check valve for industrial refrigeration
CN105805370A (en) * 2016-06-02 2016-07-27 福建省海洋阀门科技有限公司 Adjusting valve with self-sealing function
CN106870779A (en) * 2017-04-05 2017-06-20 李祥庆 Protecting against shock lift check valve
CN106870779B (en) * 2017-04-05 2018-11-23 李祥庆 Protecting against shock lift check valve
CN107489814A (en) * 2017-09-21 2017-12-19 安徽荣达阀门有限公司 A kind of new dual spring regulation Slow Close Valve

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130109

Termination date: 20150531

EXPY Termination of patent right or utility model