CN105443812A - Mute piston-type check valve - Google Patents
Mute piston-type check valve Download PDFInfo
- Publication number
- CN105443812A CN105443812A CN201410400281.XA CN201410400281A CN105443812A CN 105443812 A CN105443812 A CN 105443812A CN 201410400281 A CN201410400281 A CN 201410400281A CN 105443812 A CN105443812 A CN 105443812A
- Authority
- CN
- China
- Prior art keywords
- piston
- valve
- check valve
- mute
- type
- 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.)
- Pending
Links
- 230000000694 effects Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 101001017827 Mus musculus Leucine-rich repeat flightless-interacting protein 1 Proteins 0.000 description 10
- 239000012530 fluid Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
Landscapes
- Details Of Valves (AREA)
Abstract
The invention provides a mute piston-type check valve. The mute piston-type check valve comprises a left channel of the valve and a right channel of the valve. A channel connection port is arranged between two channels of the valve and can be opened and closed via a piston-type valve clack. A piston cylinder body is arranged between the two channels of the valve. The piston-type valve clack is arranged in the interior of the piston cylinder. The upper portion of the piston-type valve clack is provided with a spherical check valve and multiple throttle plugs. The lower portion of the piston-type valve clack is matched with the channel connection port.The mute piston-type check valve has following beneficial effects: leakage caused by valve vibration of water hammer effect is avoided; service lifetime of the valve is prolonged; and a mute function is fulfilled.
Description
Technical field
The present invention relates to safety check technical field, particularly a kind of quiet piston check valve be applicable in gas operating mode.
Background technique
Current rotary-open type, Double-disc type, vertical, the safety check such as angie type, conventional piston, all rely on merely flap deadweight to realize opening and closing with the combination of medium power or spring and medium power, the change repeatedly of hydrodynamic pressure can cause quick unlatching, the quick closedown of flap, such valve easily causes water hammer effect, sealing surface destruction, noise pollution etc. in the course of the work, is especially embodied in gas operating mode!
Summary of the invention
In keying movement process, easy motion is realized in order to make valve flap, during unlatching, flap slowly rises, slowly decline during closedown, realize quiet, to prevent water hammer effect and minimizing sealing surface impact failure, the invention provides a kind of quiet piston check valve, design piston type flap, flap is installed ball check valve and some orifice plugs, utilizes cylinder principle by the effect of ball check valve and orifice plug, flap steadily slowly to be run.
To achieve these goals, the invention provides following technological scheme:
A kind of quiet piston check valve, it comprises the left passage of valve, the right passage of valve, expanding channels mouth is provided with between two valve passages, expanding channels mouth realizes opening and closing by piston type flap, piston/cylinder is provided with between described two valve passages, described piston type flap is located at piston/cylinder inside, and a ball check valve and some orifice plugs are installed in the top of piston type flap, match with expanding channels mouth in the bottom of piston type flap.
The beneficial effect that the present invention brings is: stopped water hammer effect and caused valve to shake and the leakage that causes, extends valve working life, has quiet function.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Number in the figure is:
1, piston type flap; 2, orifice plug; 3, ball check valve; 4, piston/cylinder; 5, the left passage of valve; 6, the right passage of valve; 56, channel interface.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
As shown in Figure 1, a kind of quiet piston check valve, it comprises the left passage of valve 5, the right passage 6 of valve, expanding channels mouth 56 is provided with between two valve passages, expanding channels mouth realizes opening and closing by piston type flap 1, and be provided with piston/cylinder 4 between described two valve passages, it is inner that described piston type flap 1 is located at piston/cylinder 4, a ball check valve 3 and some orifice plugs 2 are installed in the top of piston type flap 1, match with expanding channels mouth 56 in the bottom of piston type flap 1.
When fluid flows to from logical 5 roads, a valve left side, after piston type flap forms certain pressure 1 time, upwardly piston type flap 1, because the pressure in now piston/cylinder 4 is pressure release from orifice plug 2 and ball check valve 3, aperture is less, earth pressure release is slow, the pressure difference of piston type flap 1 upper and lower end is less, so time piston type flap bottom slowly can be separated with channel interface 56, until be full of medium in two valve passages, when the pressure medium in piston/cylinder 4 fluid pressure and piston flap 1 gravity and passage reaches balance, now valve is opened completely.
When inner fluid passage pressure reduces, piston flap 1 starts to decline, piston/cylinder 4 internal pressure also reduces thereupon, ball check valve 3 now cuts out, only increase pressure by medium in orifice plug 2 inhaling valve passage in piston/cylinder 4, according to vacuumizing principle, piston type flap 1 declines slowly, until the bottom of piston type flap 1 slowly contacts with channel interface 56, and finally reach sealing state.
The above; be only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the technical scope disclosed by the present invention; the change can expected without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.
Claims (1)
1. a quiet piston check valve, it comprises the left passage of valve (5), the right passage of valve (6), expanding channels mouth (56) is provided with between two valve passages, expanding channels mouth realizes opening and closing by piston type flap (1), it is characterized in that, piston/cylinder (4) is provided with between described two valve passages, described piston type flap is located at piston/cylinder inside, a ball check valve (3) and some orifice plugs (2) are installed in the top of piston type flap, match with expanding channels mouth in the bottom of piston type flap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410400281.XA CN105443812A (en) | 2014-08-15 | 2014-08-15 | Mute piston-type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410400281.XA CN105443812A (en) | 2014-08-15 | 2014-08-15 | Mute piston-type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105443812A true CN105443812A (en) | 2016-03-30 |
Family
ID=55554329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410400281.XA Pending CN105443812A (en) | 2014-08-15 | 2014-08-15 | Mute piston-type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105443812A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504231A (en) * | 2017-08-10 | 2017-12-22 | 德维阀门铸造（苏州）股份有限公司 | A kind of sealing structure of Jing Yin piston check valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201273386Y (en) * | 2008-09-11 | 2009-07-15 | 开维喜阀门集团有限公司 | Piston type pressure-control check valve |
| CN202418747U (en) * | 2012-01-16 | 2012-09-05 | 浙江福瑞科流控机械有限公司 | Low-medium pressure piston check valve |
| CN202418746U (en) * | 2012-01-16 | 2012-09-05 | 浙江福瑞科流控机械有限公司 | High-pressure piston type check valve |
| CN103216672A (en) * | 2013-04-09 | 2013-07-24 | 西诺威阀门控制（苏州）有限公司 | Muted piston-type valve clack and check valve |
-
2014
- 2014-08-15 CN CN201410400281.XA patent/CN105443812A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201273386Y (en) * | 2008-09-11 | 2009-07-15 | 开维喜阀门集团有限公司 | Piston type pressure-control check valve |
| CN202418747U (en) * | 2012-01-16 | 2012-09-05 | 浙江福瑞科流控机械有限公司 | Low-medium pressure piston check valve |
| CN202418746U (en) * | 2012-01-16 | 2012-09-05 | 浙江福瑞科流控机械有限公司 | High-pressure piston type check valve |
| CN103216672A (en) * | 2013-04-09 | 2013-07-24 | 西诺威阀门控制（苏州）有限公司 | Muted piston-type valve clack and check valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504231A (en) * | 2017-08-10 | 2017-12-22 | 德维阀门铸造（苏州）股份有限公司 | A kind of sealing structure of Jing Yin piston check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 215200 Ganquan West Road, Wujiang, Jiangsu, Suzhou Applicant after: Davy valve casting (Suzhou) Limited by Share Ltd Address before: 215200 Ganquan West Road, Wujiang, Jiangsu, Suzhou Applicant before: Dewei (Suzhou) Co., Ltd. valve casting |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |
|
| RJ01 | Rejection of invention patent application after publication |