CN205401841U - Two -way damping buffering check valve - Google Patents
Two -way damping buffering check valve Download PDFInfo
- Publication number
- CN205401841U CN205401841U CN201620182109.6U CN201620182109U CN205401841U CN 205401841 U CN205401841 U CN 205401841U CN 201620182109 U CN201620182109 U CN 201620182109U CN 205401841 U CN205401841 U CN 205401841U
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- CN
- China
- Prior art keywords
- cylinder
- valve
- inner chamber
- cylinder body
- check 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
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- Check Valves (AREA)
Abstract
The utility model discloses a two -way damping buffering check valve has the valve body, has the valve clack in the valve body, and the valve shaft has been worn on valve body upper portion, even has the rocker between valve shaft and the valve clack, the valve body is stretched out to the one end of valve shaft, stretches out to be equipped with the crank on the valve shaft of valve body admittedly, still including two -way damping hydro -cylinder, this two -way damping hydro -cylinder has the cylinder body, has the hydro -cylinder inner chamber in the cylinder body, the upper and lower both ends of cylinder body have go up, lower cylinder cover, the piston has in the cylinder body, the piston rod is equipped with on the piston, lie in cylinder body one side and be close to position last, lower cylinder cover respectively and be equipped with upper and lower choke valve respectively, even have the draft tube between the upper and lower choke valve, it has the honeycomb duct to feed through between draft tube and the hydro -cylinder inner chamber, be arranged in the position that is close to cylinder body upper portion and lower part be equipped with respectively with the upper and lower one -way oil return device that the cylinder body inner chamber is linked together. The utility model discloses a speed of end section can control flap be opened and closes to aperture through controlling upper and lower choke valve to prevent water hammer phenomenon's production.
Description
Technical field
This utility model relates to a kind of check-valves, concretely relates to a kind of bidirectional damper buffer check valve.
Background technology
Check-valves is the valve opened and closed with the flowing of fluid.Check-valves is arranged on fluid line, it is possible to allowing fluid only flow in one direction, when the liquid in fluid line flows backwards, check-valves can be automatically switched off.Check-valves load change when opening and closing is relatively big, and the opening and closing characteristic of check-valves affects the hydrodynamic parameters in pipeline.Check-valves is when closed, generally require that check-valves is swift in response, the i.e. quick closedown when flowing backwards occurs in liquid medium, the liquid medium that cut-off is flow backwards, but too fast if turned off moving, and in pipeline, the flow velocity of fluid media (medium) is rapidly decreased to zero from maximum refluence speed, the kinetic energy of liquid medium changes into rapidly static energy, make the pressure of fluid media (medium) in pipeline raise rapidly, produce the water hammer that pipe-line system is had destruction, in the opening process of check-valves, water hammer can be produced equally equally.In prior art, the structure of check-valves has valve body, and valve body has entery and delivery port, having flap in valve body, valve body top is installed with valve shaft, is connected with rocking bar between valve shaft and flap, during fluid forward flow, the fluid of forward flow can promote flap to drive valve shaft to be rotated away from valve seat, and check-valves is opened；When reverse flow of fluids in fluid line, the fluid of refluence can promote flap to drive valve shaft to rotate, and closure of check ring, this check-valves is not provided with damping unit, all can produce water hammer in the opening and closing process of check-valves.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of bidirectional damper buffer check valve that will not produce water hammer in opening and closing process.
For solving above-mentioned technical problem, this utility model one bidirectional damper buffer check valve, there is valve body, valve body has entery and delivery port, having flap in valve body, valve body top is installed with valve shaft, is connected with rocking bar between valve shaft and flap, described valve body is stretched out in one end of described valve shaft, stretches out and is fixed with crank on the valve shaft of valve body；Also include bidirectional damper oil cylinder, this bidirectional damper oil cylinder has cylinder body, there is in cylinder body cylinder cavity, the upper/lower terminal of cylinder body has upper and lower cylinder cap, having piston in cylinder body, equipped with piston rod on piston, the upper/lower terminal of piston rod seals from described upper and lower cylinder cap and stretches out, being fixed with connecting plate on the piston rod stretched out by upper cylinder cover, this connecting plate is fixing with one end of described crank to be connected；It is positioned at described cylinder body side and the position respectively close to upper and lower cylinder cap and is respectively equipped with the upper and lower choke valve being connected with cylinder cavity, be connected with guide shell between upper and lower choke valve, between guide shell and cylinder cavity, be communicated with mozzle；It is located close to described cylinder body middle and upper part and is respectively equipped with the upper and lower unidirectional oil return apparatus being connected with described inner chamber of cylinder block with the position of middle and lower part, upper unidirectional oil return apparatus includes the upper check valve being positioned at cylinder body middle and upper part and being connected with inner chamber of cylinder block, and upper check valve is connected with the inner chamber of cylinder block near described upper cylinder cover position by oil pipe；Under unidirectional oil return apparatus include the lower check valve that is positioned at cylinder body middle and lower part and is connected with inner chamber of cylinder block, lower check valve is connected with the inner chamber of cylinder block near described lower cylinder cap position by oil pipe.
Adopt the bidirectional damper buffer check valve of said structure, the fluid forward flow in pipeline when valve opening, fluid forces flap drives valve shaft to rotate counterclockwise, the crank being now fixedly mounted with on valve shaft drives piston rod to move upward by connecting plate, and then piston rod drives described piston by the upward-sliding bottoms of inner chamber of cylinder block, in piston upward sliding process, the oil in inner chamber of cylinder block first passes through lower check valve and returns to inner chamber of cylinder block through oil pipe bottom inner chamber of cylinder block, piston continues to slide up, when by upper check valve, oil in the inner chamber of cylinder block of upper piston area can only return to inner chamber of cylinder block from described upper choke valve through guide shell and mozzle, the opening speed of this utility model check-valves unlatching latter end can be controlled by controlling the aperture of upper choke valve, such that it is able to avoid generation water hammer in opening process；When the fluid appearance refluence in pipeline, the check-valves same latter end in closedown when closed can pass through the aperture of choke valve under adjustment and then control the closing velocity of closure of check ring latter end of the present utility model, it is possible to avoid producing water hammer in closing process.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, this utility model is described in further detail.
The master that Fig. 1 is a kind of bidirectional damper buffer check valve of this utility model cuts open structural representation depending on office.
Fig. 2 is the sectional structure schematic diagram of line A-A along Fig. 1.
Fig. 3 is the sectional structure schematic diagram of the bidirectional damper oil cylinder in a kind of bidirectional damper buffer check valve of this utility model, specifically illustrates the structure of bidirectional damper oil cylinder.
Detailed description of the invention
Referring to Fig. 1-Fig. 3, this utility model one bidirectional damper buffer check valve, there is valve body 20, valve body 20 has entery and delivery port 21,22, having flap 23 in valve body 20, valve body 20 top is installed with valve shaft 24, is connected with rocking bar 25 between valve shaft 24 and flap 23, described valve body 20 is stretched out in one end of described valve shaft 24, stretches out and is fixed with crank 26 on the valve shaft 24 of valve body 20；Also include bidirectional damper oil cylinder 1, this bidirectional damper oil cylinder 1 has cylinder body 2, there is in cylinder body 2 cylinder cavity 3, the upper/lower terminal of cylinder body 2 has upper and lower cylinder cap 4,5, having piston 6 in cylinder body 2, equipped with piston rod 7 on piston 6, the upper/lower terminal of piston rod 7 seals from described upper and lower cylinder cap 4,5 and stretches out, being fixed with connecting plate 8 on the piston rod 7 stretched out by upper cylinder cover 4, this connecting plate 8 is fixing with one end of described crank 26 to be connected；It is positioned at described cylinder body 2 side and the position respectively close to upper and lower cylinder cap 4,5 and is respectively equipped with the upper and lower choke valve 9,10 being connected with cylinder cavity 3, it is connected with guide shell 11 between upper and lower choke valve 9,10, between guide shell 11 and cylinder cavity 3, is communicated with mozzle 12；It is located close to described cylinder body 2 middle and upper part and is respectively equipped with the upper and lower unidirectional oil return apparatus 13,14 being connected with described inner chamber of cylinder block 3 with the position of middle and lower part, upper unidirectional oil return apparatus 13 includes the upper check valve 15 being positioned at cylinder body 2 middle and upper part and being connected with inner chamber of cylinder block 3, and upper check valve 15 is connected with the inner chamber of cylinder block 3 near described upper cylinder cover 4 position by oil pipe；Under unidirectional oil return apparatus 14 include the lower check valve 16 that is positioned at cylinder body 2 middle and lower part and is connected with inner chamber of cylinder block 3, lower check valve 16 is connected by the inner chamber of cylinder block 3 of oil pipe with close described lower cylinder cap 5 position.
Claims (1)
1. a bidirectional damper buffer check valve, there is valve body (20), valve body (20) has entery and delivery port (21,22), there is in valve body (20) flap (23), valve body (20) top is installed with valve shaft (24), rocking bar (25) it is connected with between valve shaft (24) and flap (23), it is characterised in that: described valve body (20) is stretched out in one end of described valve shaft (24), stretches out and is fixed with crank (26) on the valve shaft (24) of valve body (20)；Also include bidirectional damper oil cylinder (1), this bidirectional damper oil cylinder (1) has cylinder body (2), there is in cylinder body (2) cylinder cavity (3), the upper/lower terminal of cylinder body (2) has upper and lower cylinder cap (4,5), there is in cylinder body (2) piston (6), equipped with piston rod (7) on piston (6), the upper/lower terminal of piston rod (7) seals from described upper and lower cylinder cap (4,5) and stretches out, being fixed with connecting plate (8) on the piston rod (7) stretched out by upper cylinder cover (4), this connecting plate (8) is fixing with one end of described crank (26) to be connected；It is positioned at described cylinder body (2) side and the position respectively close to upper and lower cylinder cap (4,5) and is respectively equipped with the upper and lower choke valve (9,10) being connected with cylinder cavity (3), it is connected with guide shell (11) between upper and lower choke valve (9,10), between guide shell (11) and cylinder cavity (3), is communicated with mozzle (12)；It is located close to described cylinder body (2) middle and upper part and is respectively equipped with the upper and lower unidirectional oil return apparatus (13,14) being connected with described inner chamber of cylinder block (3) with the position of middle and lower part, upper unidirectional oil return apparatus (13) includes the upper check valve (15) being positioned at cylinder body (2) middle and upper part and being connected with inner chamber of cylinder block (3), and upper check valve (15) is connected with the inner chamber of cylinder block (3) near described upper cylinder cover (4) position by oil pipe；Under unidirectional oil return apparatus (14) include the lower check valve (16) that is positioned at cylinder body (2) middle and lower part and is connected with inner chamber of cylinder block (3), lower check valve (16) is connected with the inner chamber of cylinder block (3) near described lower cylinder cap (5) position by oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620182109.6U CN205401841U (en) | 2016-03-10 | 2016-03-10 | Two -way damping buffering check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620182109.6U CN205401841U (en) | 2016-03-10 | 2016-03-10 | Two -way damping buffering check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205401841U true CN205401841U (en) | 2016-07-27 |
Family
ID=56440670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620182109.6U Expired - Fee Related CN205401841U (en) | 2016-03-10 | 2016-03-10 | Two -way damping buffering check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205401841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112361038A (en) * | 2020-11-26 | 2021-02-12 | 天津卡尔斯阀门股份有限公司 | Check valve |
-
2016
- 2016-03-10 CN CN201620182109.6U patent/CN205401841U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112361038A (en) * | 2020-11-26 | 2021-02-12 | 天津卡尔斯阀门股份有限公司 | Check valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 Termination date: 20210310 |