CN2503281Y - Slowly closed silencing check valve - Google Patents
Slowly closed silencing check valve Download PDFInfo
- Publication number
- CN2503281Y CN2503281Y CN 01234658 CN01234658U CN2503281Y CN 2503281 Y CN2503281 Y CN 2503281Y CN 01234658 CN01234658 CN 01234658 CN 01234658 U CN01234658 U CN 01234658U CN 2503281 Y CN2503281 Y CN 2503281Y
- Authority
- CN
- China
- Prior art keywords
- valve gap
- housing
- guide rail
- valve
- 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 relates to a slow closure noise elimination check valve including a straight shell and a valve cover that is internally provided with a backwater sealing structure; wherein, the valve cover and the shell are both provided with an axial sliding guide rail; the valve cover is provided with an opened returning spring; and the valve cover is provided with a non returning slow closure noise elimination device. The utility model has the advantages that: when the liquid flows back, a water hammer is removed, the noise is reduced, the effect of energy saving and vibration is realized, the service life of the pump and the tube is prolonged; besides, the disadvantages of large energy, big noise and short service life of the traditional screwing open type check valve are overcome. Therefore, the utility model is fit to position in a liquid tube system behind a pump to stop returning.
Description
Technical field
The utility model relates to valve technology field, specifically is a kind of liquid damping check valve.
Background technique
Safety check is mounted in a kind of device behind the water pump, its objective is when water pump stops, and reverse fluid flow forms vacuum in the water pump, and at this moment water to be to backflow at a high speed, form very kinetic energy, close safety check according to the pressure of fluid self.Existing Swing check valve, valve gap is a drawing-pushing type, and kinetic energy impacts water pump, causes very big echo, and pipe network vibrations (water hammer) reduce water pump, pipe-line system life-span.
Summary of the invention
The purpose of this utility model provides a kind of Slow Close damping check valve, when the liquid non-return, has the elimination water hammer, reduces noise, and the energy-saving anti-vibration function can prolong pipe-line system and life of equipment.
Technical characterstic of the present utility model is: a kind of Slow Close damping check valve, comprise straight-through type housing and valve gap, be provided with non-return sealing structure therebetween, it is characterized in that valve gap and housing be provided with cooperatively interact make valve gap and housing guide rail in axial sliding, valve is provided with the unlatching Returnning spring, is provided with non-return Slow Close silencer on valve gap.
The structure of non-return Slow Close silencer can for: in housing, be provided with an impact-absorbing shell on valve gap top.
It is good that impact-absorbing shell is umbrella, also can be circle or sphere shape etc.
Non-return Slow Close silencer also can structure be: valve gap is provided with a moving tube and is fixed on a narrow meshed safety barrel axial sliding fit on the housing above it.
It is good being provided with the dynamic seal (packing) structure between moving tube and safety barrel.
Guide rail structure can for: be fixed with slide guide on the valve gap, housing is provided with it the hole that cooperates.
Guide rail structure also can for: valve gap is provided with guide rail hole, and fixed guide rail links to each other with housing.
The working principle of Slow Close damping check valve:
(1) water pump normally starts, water (flow) direction upwards, water around the spool to the upper reaches.
(2) when water pump was shut down, water will backflow, and made valve gap to downslide by piece number upper end aperture, because resistance is big, valve gap begins to glide more slowly.
(3) sound deadening shock absorption principle: because water pump is shut down, slide into valve closing valve gap begins under, the little kinetic energy of valve gap movement velocity is little like this, and valve gap has played Slow Close noise elimination effect to the very little impact of sealing surface, and valve and the minimizing of whole pipe network system are shaken.Piece number 2 sealing surfaces are nitrile rubber in addition, and in when sealing also sound deadening shock absorption, and sealability is fine.
The purposes of Slow Close damping check valve:
Because Slow Close damping check valve big non-resistance of flow when the current proper functioning, it is shockproof not have water hammer low noise (less than 30 decibels) pipe network system when current backflow, good seal performance, opening time 5-10 second, shut-in time 40-60 second.Volume is little, and face under water in light weight is installed, and also face is installed on the water, can level install, and also can vertically install, and installs easily.Therefore it is general to have many uses.Can be used in central air-conditioner, tall building, waterworks, sewage-farm, steam etc., install and use all very convenient.
The beneficial effects of the utility model are: during the liquid non-return, can eliminate water hammer, reduce noise, energy-saving anti-vibration can effectively prolong life-span of pipe-line system and equipment.It is big to have overcome the big noise of existing Swing check valve kinetic energy, the disadvantage that the life-span is low.The fluid pipeline System Halt backwater that is particularly suitable for being contained in behind the water pump is used.
Be described further below in conjunction with embodiment and accompanying drawing, but not as to qualification of the present utility model.
Description of drawings
Fig. 1 is embodiment 1 a structural representation.
Fig. 2 is embodiment 2 a structural representation.
Embodiment
Referring to Fig. 1, housing 1 (combined type or integrated type all can) and 3 of valve gaps have non-return watertight packing 2, the guide rail 8 that is fixed on the valve gap 3 is slidingly matched with hole on the housing, the moving tube 4 that is fixed on the valve gap 3 is slidingly matched with the top narrow meshed safety barrel 6 that is fixed on the housing 1,7 is sealing gasket, and 5 are moving tube unlatching Returnning spring.When water pump termination work, form vacuum in the water pump, enter the aperture damping when water backflows, thereby realize goal of the invention.
Referring to Fig. 2,13 for being fixed on guide rail on the housing 1, cooperates with guide hole on the valve gap 9, and 10 is the umbrella damping cover that flows slowly, and 11 is wear-resisting copper sheathing, and 12 is sealing gasket.Can realize goal of the invention equally.The same Fig. 1 of other labels.
Claims (7)
1, a kind of Slow Close damping check valve, comprise straight-through type housing (1) and valve gap (3), be provided with non-return sealing structure therebetween, it is characterized in that valve gap (3) and housing (1) be provided with cooperatively interact make valve gap (3) and housing (1) guide rail (8,14) in axial sliding, valve gap (3) is provided with opens Returnning spring (5), is provided with non-return Slow Close silencer (4,6,9) on valve gap (3).
2, safety check according to claim 1 is characterized in that the structure of described non-return Slow Close silencer is: in housing (1), be provided with an impact-absorbing shell (9) on valve gap (3) top.
3, safety check according to claim 2 is characterized in that impact-absorbing shell is umbrella.
4, safety check according to claim 1 is characterized in that the structure of non-return Slow Close silencer is: valve gap (3) is provided with a moving tube (4) and is fixed on narrow meshed safety barrel (a 6) axial sliding fit on the housing (1) above it.
5, safety check according to claim 4 is characterized in that being provided with dynamic seal (packing) structure (7) between moving tube (4) and safety barrel (6).
6, according to claim 1,2,3,4 or 5 described safety check, it is characterized in that described guide rail structure is: be fixed with slide guide (8) on the valve gap (3), housing (1) is provided with the hole that cooperates with it.
7, according to claim 1,2,3,4 or 5 described safety check, it is characterized in that described guide rail structure is: valve gap (3) is provided with guide rail hole, and fixed guide rail (13) links to each other with housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01234658 CN2503281Y (en) | 2001-08-31 | 2001-08-31 | Slowly closed silencing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01234658 CN2503281Y (en) | 2001-08-31 | 2001-08-31 | Slowly closed silencing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2503281Y true CN2503281Y (en) | 2002-07-31 |
Family
ID=33648041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01234658 Expired - Fee Related CN2503281Y (en) | 2001-08-31 | 2001-08-31 | Slowly closed silencing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2503281Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635729A (en) * | 2011-02-10 | 2012-08-15 | 通用汽车环球科技运作有限责任公司 | Internally dampened pressure relief valve |
-
2001
- 2001-08-31 CN CN 01234658 patent/CN2503281Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635729A (en) * | 2011-02-10 | 2012-08-15 | 通用汽车环球科技运作有限责任公司 | Internally dampened pressure relief valve |
| CN102635729B (en) * | 2011-02-10 | 2015-01-21 | 通用汽车环球科技运作有限责任公司 | Internally dampened pressure relief valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |