CN201487322U - Check valve with valve plate slow closure function - Google Patents
Check valve with valve plate slow closure function Download PDFInfo
- Publication number
- CN201487322U CN201487322U CN2009201733837U CN200920173383U CN201487322U CN 201487322 U CN201487322 U CN 201487322U CN 2009201733837 U CN2009201733837 U CN 2009201733837U CN 200920173383 U CN200920173383 U CN 200920173383U CN 201487322 U CN201487322 U CN 201487322U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve plate
- valve body
- piston rod
- main valve
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000003566 sealing material Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000001066 destructive effect Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Landscapes
- Details Of Valves (AREA)
- Check Valves (AREA)
Abstract
The utility model relates to a check valve with valve plate slow closure function. The check valve comprises a main valve body, a valve board and a damper system which can lead the valve plate to be slowly closed. A valve plate shaft is arranged in the main valve body, two semi-circular valve plates are hinged on the shaft, and medium is prevented from reversely flowing when stopping a pump. The inlet end of the main valve body is provided with a piston sleeve and a piston rod, the through hole on the bottom end of the piston sleeve is communicated with a medium drainage hole on the outlet end of the valve, pressure of return flow medium in pipelines is directly utilized to lead the end portion of the piston rod to be pressed on the edge of the valve plate, thereby implementing slow closure action, destructive water hammer pressure generated by stopping a pump and the impact noise of the valve board and the valve seat when the valve is closed can be automatically eliminated, and the safe operation of a pipeline system can be assured. The check valve has the advantages of excellent slow closure performance, and does not need additionally increase closed oil path systems, thereby having simple structure and sensitive motion, and reaching the purpose of firstly quickly closing the valve plate and secondly slowly closing the valve plate. The slow closure system is made of stainless steel, is corrosion resistant and attrition resistance, and is not blocked, thereby guaranteeing that the slow closure action can be normally implemented.
Description
Technical field
The utility model relates to the valve in the water supply and sewerage pipeline system, specifically refers to a kind of safety check with valve plate Slow Close function that pump outlet prevents that medium from refunding that is installed in.
Background technique
Safety check usually is installed in the outlet port of water pump in water-feeding ﹠ drainaging pipeline, its objective is that current are refunded when preventing that water pump from shutting down.But in some present water-feeding ﹠ drainaging pipelines, traditional safety check just is provided with a unidirectional valve plate of toppling over or two fan-shaped butterfly-like valve plates usually in valve body.When termination of pumping, the Driving force that loses medium owing to valve plate is closed valve rapidly, but anti-huge " water hammer " power of formation that flows of the medium of outlet end is impacted quite big to valve plate, sometimes even can cause damage, this is particularly serious in heavy caliber, high-lift water-feeding ﹠ drainaging pipeline to valve and pipe-line system.If can damping when water pump is out of service slowly the closing of valve plate, this water hammer force phenomenon will disappear.Therefore, a kind of slow closing device of valve plate is set in safety check, the safety of pipe-line system and valve itself is of great benefit to.
The model utility content
The purpose of this utility model is: the deficiency that does not have the Slow Close function at the valve plate of conventional check valves, a kind of safety check with valve plate closed form first quick and back slow is provided, the noise that minimizing takes place when the water hammer ripple is to the impact force of valve plate and valve plate bump when sealing surface is closed, stablize the flowing state of valve upstream and downstream medium, eliminate the damage hidden danger of water hammer power pipeline and valve.
The utility model realizes that the technological scheme of above-mentioned purpose is: a kind of safety check with valve plate Slow Close function, by main valve body, valve plate and damped system are formed, the inner chamber intermediate radial of described main valve body is provided with valve shaft, be hinged with two valve plates that semicircular one-tenth is butterfly-shaped on the valve shaft, described valve plate can be that the center rotation makes valve closes or unlatching along valve shaft, start the back or in the main valve body inner chamber, become opening state at water pump at two valve plates under the promotion of upstream medium, valve closes during termination of pumping, two valve plates rotate, the bead of valve seat fits tightly in its round edge and the main valve body inner chamber, the backflow of medium capable of blocking.Described damped system comprises piston sleeve and piston rod, high pressure hose, regulation and control small ball, filter, interior cavity edge at the close valve seat of valve inlet end respectively is provided with a cushion dashpot that is formed by piston sleeve and piston rod, the middle edge of valve plate round edge is withstood in each piston rod end when valve closing, the damping valve plate is slowly closed, and the each several part of described damped system is connected by high pressure hose.
Described high pressure hose one end is connected by the through hole of joint with the piston sleeve bottom of valve inlet end, and the other end of high pressure hose connects filter, and filter connects a regulation and control small ball, and then is connected by the conduction hole of joint with the main valve body outlet end.
Be provided with between described piston sleeve and piston rod in the cavity of seal ring, piston rod bottom and be provided with pressure spring, for preventing dielectric leakage, be provided with O-ring seals between piston sleeve and the valve body, the sealing material between joint and the main valve body is selected the red copper pad for use.
The safety check that the utlity model has valve plate Slow Close function is mainly used on the water supply and sewerage pipeline, is installed in the outlet port of water pump, in order to prevent the refluence of medium.And the impact noise of Slow Close function can eliminate the destructive water hammer power that produces because of termination of pumping and valve plate automatically and close the time guaranteed the safe operation of pipe-line system.The advantage of this buffer valve is that the Slow Close performance is good, can directly utilize ducted reflux medium pressure to realize the Slow Close action, need not to increase in addition the oil-way system of sealing.Thereby designs simplification, be active in one's movements, reach valve plate and close earlier the back Slow Close soon, prevent the purpose that destructive water hammer power produces.Whole parts of Slow Close system all adopt the stainless steel manufacturing, and are corrosion-resistant, and are provided with filter, silt can be filtered out, and therefore can not stop up, thereby guarantee the normal enforcement that Slow Close moves.
Description of drawings
Fig. 1 is the side schematic view (half section) of the utility model main valve body;
Fig. 2 is main valve body of the present utility model and valve plate floor map;
Fig. 3 is the enlarged view of A portion among Fig. 1;
Each title and mark among the figure: 1.O shape seal ring, 2. pressure spring, 3. piston rod, 4. piston sleeve, 5. seal ring, 6. valve body, 7. valve plate, 8. valve shaft, 9. red copper pad, 10. joint, 11. high pressure hoses, 12. regulation and control small balls, 13. filters.
Embodiment
As shown in Figure 1 and Figure 2: the Slow Close damped system of this safety check comprises piston sleeve 4, piston rod 3, pressure spring 2, piston sleeve is arranged on cavity edge in the main valve body 6, seal with O-ring seals 1, the medium back flow system also couples together with high pressure hose 11 by joint 10, regulation and control small ball 12, filter 13, its middle joint 10 adopts 9 sealings of red copper pad with the sealing material of main valve body 6, silt foreign material in the reflux medium are filtered device 13 filterings, can prevent the obstruction of return-flow system pipeline.Its Slow Close function realizes by following principle: safety check should be in crack state with regulation and control small ball 12 before work, after the water pump of plumbing starts operation, medium boosts valve plate 7, realize the drag flow conveying of medium, the medium through hole that enters piston sleeve 4 bottoms by the conduction hole of main valve outlet conduit filter 13 and the regulation and control small ball 12 by the Slow Close system simultaneously, piston rod 3 is ejected under the promotion of medium backpressure.After water pump is out of service, be subjected to the influence of the ducted medium backpressure of outlet end can form the water hammer ripple of backflow, at this moment because valve plate 7 has lost the thrust of medium and closes rapidly, when valve plate 7 rotated near closed position fully, valve plate 7 edges were withstood and slowly close by piston rod 3.Pressure spring 2 in the bottom cavity of piston rod 3 is slowly compressed, make piston rod 3 get back to piston sleeve 4 bottoms, thereby when realizing eliminating automatically the destructive water hammer power that produces because of termination of pumping and valve plate 7 and closing and the impact noise of valve seat, guarantee the safe operation of pipe-line system.The regulation and control small ball 9 of damped system can be regulated the damping speed of backflow, can also control the Slow Close time of valve plate 7, to adapt to the pipeline needs of different pressures, different latus rectums.
Claims (3)
1. safety check with valve plate Slow Close function, by main valve body (6), valve plate (7) and damped system are formed, the inner chamber intermediate radial that it is characterized in that described main valve body (6) is provided with valve shaft (8), be hinged with two valve plates (7) that semicircular one-tenth is butterfly-shaped on the valve shaft (8), described valve plate (7) can make valve closes or unlatching for the center rotation along valve shaft (8), start the back or in main valve body (6) inner chamber, become opening state at water pump at two valve plates (7) under the promotion of upstream medium, valve seat bead during valve closes in the round edge of two valve plates (7) and main valve body (6) inner chamber fits tightly, the backflow of medium capable of blocking, described damped system comprises piston sleeve (4) and piston rod (3), high pressure hose (11), regulation and control small ball (12), filter (13), be connected with the each several part of high pressure hose (11) damped system, interior cavity edge at the close valve seat of valve inlet end respectively is provided with a cushion dashpot that is formed by piston sleeve (4) and piston rod (3), and the middle edge of corresponding valve plate (7) round edge is withstood in the end of each piston rod (3).
2. a kind of safety check as claimed in claim 1 with valve plate Slow Close function, it is characterized in that described high pressure hose (11) one ends are connected by the through hole of joint (10) with piston sleeve (4) bottom of valve inlet end, the other end of high pressure hose (11) connects filter (13), filter (13) connects a regulation and control small ball (12), and then is connected by the conduction hole of joint (10) with main valve body (6) outlet end.
3. a kind of safety check as claimed in claim 1 with valve plate Slow Close function, it is characterized in that between described piston sleeve (4) and piston rod (3), being provided with in the cavity of seal ring (5), piston rod (3) bottom and be provided with pressure spring (2), for preventing dielectric leakage, be provided with O-ring seals (1) between piston sleeve (4) and the main valve body (6) and seal, the sealing material between joint (10) and the main valve body (6) is selected red copper pad (9) for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201733837U CN201487322U (en) | 2009-08-22 | 2009-08-22 | Check valve with valve plate slow closure function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201733837U CN201487322U (en) | 2009-08-22 | 2009-08-22 | Check valve with valve plate slow closure function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201487322U true CN201487322U (en) | 2010-05-26 |
Family
ID=42426201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201733837U Expired - Fee Related CN201487322U (en) | 2009-08-22 | 2009-08-22 | Check valve with valve plate slow closure function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201487322U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963249A (en) * | 2010-10-13 | 2011-02-02 | 金云和 | High temperature micro-resistance slow closure check valve |
| CN106838384A (en) * | 2017-04-11 | 2017-06-13 | 张新丰 | Protecting against shock swing check valve assembly method |
| CN107061804A (en) * | 2017-04-11 | 2017-08-18 | 张新丰 | Protecting against shock swing check valve |
| CN108045862A (en) * | 2018-01-18 | 2018-05-18 | 洛阳理工学院 | A kind of suspension-combustion furnace rubbish baiting valve |
| CN111255929A (en) * | 2020-01-18 | 2020-06-09 | 上海亚奥阀门有限公司 | Self-sealing check valve with damping and noise reduction functions |
-
2009
- 2009-08-22 CN CN2009201733837U patent/CN201487322U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963249A (en) * | 2010-10-13 | 2011-02-02 | 金云和 | High temperature micro-resistance slow closure check valve |
| CN101963249B (en) * | 2010-10-13 | 2012-10-10 | 金云和 | High temperature micro-resistance slow closure check valve |
| CN106838384A (en) * | 2017-04-11 | 2017-06-13 | 张新丰 | Protecting against shock swing check valve assembly method |
| CN107061804A (en) * | 2017-04-11 | 2017-08-18 | 张新丰 | Protecting against shock swing check valve |
| CN107061804B (en) * | 2017-04-11 | 2018-11-02 | 张新丰 | Protecting against shock swing check valve |
| CN108045862A (en) * | 2018-01-18 | 2018-05-18 | 洛阳理工学院 | A kind of suspension-combustion furnace rubbish baiting valve |
| CN108045862B (en) * | 2018-01-18 | 2024-02-13 | 洛阳理工学院 | A kind of garbage discharge valve for suspended combustion furnace |
| CN111255929A (en) * | 2020-01-18 | 2020-06-09 | 上海亚奥阀门有限公司 | Self-sealing check valve with damping and noise reduction functions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201487322U (en) | Check valve with valve plate slow closure function | |
| CN102865389B (en) | Water hammer resistant backflow preventer | |
| CN112361064A (en) | Integrated gas injection micro-discharge valve | |
| CN205350459U (en) | Ultrahigh pressure one -way valve | |
| CN221401849U (en) | Pilot operated safety valve | |
| CN207195820U (en) | A kind of delayed on-off non-return valve | |
| CN202144887U (en) | Ball check valve | |
| CN205155236U (en) | Improved generation H type automatic recycling control valve | |
| CN205859255U (en) | A kind of water hammer-resistant reflux inlet structure | |
| CN205618744U (en) | Sealed check valve | |
| CN210461811U (en) | Adjustable self-pressure-relief silencing check valve | |
| CN211951557U (en) | Low-resistance backflow preventer | |
| CN209278562U (en) | Damping check valve | |
| CN207569276U (en) | A kind of valve stops integral valve | |
| CN107940044A (en) | A kind of differential pressure open-close check-valves | |
| CN210770459U (en) | Through-flow check valve with double guide shafts | |
| CN214889046U (en) | Flow regulating type check valve | |
| CN106763934A (en) | The lift check and cut-off combination valve of dual drive quick closedown | |
| CN202182241U (en) | Permanent magnet direct control valve | |
| CN204628657U (en) | A kind of silencing type safety check | |
| CN207437853U (en) | Quickly block check-valves | |
| CN216975893U (en) | Check valve | |
| CN206860967U (en) | Ball check valve | |
| CN204756037U (en) | Check valve of waterproof hammer | |
| CN222687388U (en) | Check valve and water purifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20140822 |
|
| EXPY | Termination of patent right or utility model |