CN2054129U - Noiseless check valve - Google Patents
Noiseless check valve Download PDFInfo
- Publication number
- CN2054129U CN2054129U CN 89208727 CN89208727U CN2054129U CN 2054129 U CN2054129 U CN 2054129U CN 89208727 CN89208727 CN 89208727 CN 89208727 U CN89208727 U CN 89208727U CN 2054129 U CN2054129 U CN 2054129U
- Authority
- CN
- China
- Prior art keywords
- valve
- check valve
- noiseless
- piston
- pneumatic cylinder
- 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
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- Details Of Valves (AREA)
- Check Valves (AREA)
Abstract
The utility model provides a noiseless check valve which is used on the gas pipeline of an air compressor. The noiseless check valve is composed of a valve body and a pneumatic cylinder which positioned below the valve body. The opening and the closing of a valve clack can be controlled through a piston and a piston rod. The valve clack of the noiseless check valve is not pushed following the pulsation of the compressed air in the normal operation of the air compressor. When the media is reflowed, the noiseless check valve can be smoothly closed, and the opening operation and the closing operation are noiseless. The noiseless check valve can also be used in the pipelines of conveying the water or any other liquid.
Description
The utility model relates to a kind of safety check, when air in pressure conduit when suddenly shutting down reverse flow, this valve can automatically slowly cut out, and flows backwards electromechanical equipments such as protection compressor thereby suppress air effectively.The utility model is particularly related to a kind of noise free safety check.
On the actual fed compressed air line, the one way stop peturn valve that suppression fluid flows backwards generally must be housed, current practice is that general check valve is installed, but pulsating nature because of general compressor delivery air, make the general check valve that is installed on the compressed air line produce strong noise, cause the wearing and tearing of serious noise pollution and valve, and increase power consumption.
The purpose of this utility model is by pneumatic cylinder control flap, thereby makes safety check open and close and normal equal noise free in service minimizing mechanical wear, energy saving at air compressor.
Noise free safety check of the present utility model is made up of valve body and pneumatic cylinder, and pneumatic cylinder generally is positioned at the valve body top, and by piston, piston rod is connected with flap, the keying of control flap.When air compressor is opened, flap is opened under pneumatic cylinder inner carrier and air momentum effect, and behind the arrival precalculated position, the piston of control flap is close on position-limited lever, thereby under bigger pressure pulsation, do not produce vibration at normal flap in service, reach the purpose that abates the noise.When air compressor stopped, flap was closed under the effect of spring and reverse flow air first quick and back slow, can suppress medium effectively and flow backwards, the protection machinery.
The utility model suppression fluid safely and effectively flows backwards, and simultaneously, is opening and closing and equal noise free in service, and during proper functioning, this flap does not fluctuate with pipeline internal medium pressure pulsation, and it is little to wear and tear, long service life, energy-saving safe.
Describe the concrete structure of the utility model noise free safety check in detail below in conjunction with accompanying drawing.
Accompanying drawing is the longitudinal sectional drawing of a kind of concrete structure of the utility model.
With reference to accompanying drawing, valve body 1 is formed an airtight fluid passage with valve gap 16, flap 12 is connected with piston 5 by piston 7, spring 11 is sleeved on the one section piston rod 7 that is positioned at 12 of valve gap 16 and flaps, closes automatically when flowing backwards with medium in the convenient valve body, and conduit 8 is housed on the pneumatic cylinder 2, it communicates with the medium input end of valve body, and modulating valve 9 is housed on conduit, the gas velocity of discharge slows down in the cylinder so that make at the last dwell period of flap, reaches the purpose of buffering.The pneumatic cylinder 2 usefulness back ofs the body cover 3 sealings, and the back of the body cover 3 and tightens stubborn position-limited lever 4, and it can cover 3 with the back of the body and roll over from pneumatic cylinder easily together and adorn.On piston 5 and the valve gap 16 O RunddichtringO 6 and 10 are housed respectively, seal ring 13 is housed on the flap 12, on the sealing surface 15 of valve body lower seal 14 is housed, so that valve has excellent sealing performance when closing.
This valve also can be used in the pipeline of carrying other gas and liquid.
Claims (1)
1, a kind of by valve body 1, valve gap 16, pneumatic cylinder 2, conduit 8, the noise free safety check that piston 5, spring 11 and flap 12 are formed, it is characterized in that: pneumatic cylinder 2 is installed on the top of valve body 1 vertically, and pneumatic cylinder 2 inner carriers 5 are connected with flap 12 by piston rod 7, piston 5 position and action in pneumatic cylinder are controlled by pressure medium valve body 1 in by conduit 8, piston 5 is controlled the open and close of flaps 12 by piston rod 7 and spring 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89208727 CN2054129U (en) | 1989-06-19 | 1989-06-19 | Noiseless check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89208727 CN2054129U (en) | 1989-06-19 | 1989-06-19 | Noiseless check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2054129U true CN2054129U (en) | 1990-03-07 |
Family
ID=4865366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89208727 Pending CN2054129U (en) | 1989-06-19 | 1989-06-19 | Noiseless check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2054129U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697199A (en) * | 2014-01-23 | 2014-04-02 | 宁波华成阀门有限公司 | Check fire-fighting valve |
-
1989
- 1989-06-19 CN CN 89208727 patent/CN2054129U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697199A (en) * | 2014-01-23 | 2014-04-02 | 宁波华成阀门有限公司 | Check fire-fighting valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |