CN213809043U - Low-resistance check valve - Google Patents
Low-resistance check valve Download PDFInfo
- Publication number
- CN213809043U CN213809043U CN202022712146.2U CN202022712146U CN213809043U CN 213809043 U CN213809043 U CN 213809043U CN 202022712146 U CN202022712146 U CN 202022712146U CN 213809043 U CN213809043 U CN 213809043U
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- Prior art keywords
- valve
- valve body
- valve core
- seat
- sealing gasket
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- 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.)
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- 238000007789 sealing Methods 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000007792 addition Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Check Valves (AREA)
Abstract
The low-resistance check valve comprises a valve body, a valve core, a sealing gasket, a spring, a valve core seat, an elastic retainer ring, a valve cover, an O-shaped ring and an auxiliary opening device; by adopting the structure, when the pressure in front of the valve is reduced or the pressure behind the valve is increased, the valve core drives the sealing gasket to move downwards under the action of the spring force, and when the sealing gasket is tightly contacted with the sealing seat, the valve is closed, so that the water behind the valve is prevented from flowing backwards to the front of the valve to cause pollution; when the pressure of the pipeline is recovered to be normal, the hand wheel can be rotated to drive the shifting rod to rotate, the valve core is pushed to move upwards to open the valve, when a medium passes through the valve, the spring force does not need to be overcome, and the flowing resistance of the medium is effectively reduced.
Description
Technical Field
The utility model relates to a valve especially relates to a low resistance check valve.
Background
In pipe systems for conveying liquid media, check valves are commonly used for various reasons in order to prevent backflow of the media. In a conventional check valve, a spring applies pressure to a valve element to press the valve element against a corresponding valve seat to achieve sealing. The magnitude of the compressive force is determined by the sealing requirements. The disadvantages of this check valve are: when the valve is opened, the opening degree of the valve core is increased along with the increase of the flow, the opening degree of the valve core is increased, the compression amount of the spring is increased, and the spring force is also increased in proportion, namely the flow resistance of the medium is increased in proportion, so that more energy must be consumed, and particularly, the large-caliber check valve has higher sealing requirement.
Disclosure of Invention
The utility model aims to solve the technical problem that a low resistance check valve with supplementary opening device is provided to foretell technical current situation.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: the low-resistance check valve comprises a valve body, a valve core, a sealing gasket, a spring, a valve core seat, an elastic retainer ring, a valve cover, an O-shaped ring and an auxiliary opening device; the valve body is provided with a valve cavity and a fluid passage communicated with the valve cavity, and the fluid passage comprises a water inlet passage, a water outlet passage and a valve core mounting passage; the upper part of the valve core installation channel of the valve body is in threaded connection with a valve cover, and the valve cover and the valve body are sealed through an O-shaped ring; the valve core mounting channel below the valve cover is sequentially provided with a valve core seat, a spring, a valve core and a sealing gasket, the valve body is provided with a sealing seat, and the sealing seat and the sealing gasket can be attached and sealed; the valve core seat and the valve body are fixed through an elastic retainer ring;
the auxiliary opening device is arranged on the side face of the valve body and comprises a shifting rod, an O-shaped ring, a gasket, a pressing cap, a hand wheel and a fixing screw, the shifting rod is shaped like , one end of the shifting rod is arranged in the water inlet channel, the other end of the shifting rod penetrates through the valve body and is connected with the hand wheel, and the shifting rod can rotate 360 degrees around the horizontal axis by rotating the hand wheel; the deflector rod and the valve body are sealed through an O-shaped ring and fixed through a pressing cap; the shifting lever and the hand wheel are fixed through a fixing screw.
Compared with the prior art, the utility model has the advantages of: when the pressure in front of the valve is reduced or the pressure behind the valve is increased, the valve core drives the sealing gasket to move downwards under the action of the spring force, and when the sealing gasket is tightly contacted with the sealing seat, the valve is closed, so that the water behind the valve is prevented from flowing backwards to the front of the valve to cause pollution; when the pressure of the pipeline is recovered to be normal, the hand wheel can be rotated to drive the shifting rod to rotate, the valve core is pushed to move upwards to open the valve, when a medium passes through the valve, the spring force does not need to be overcome, and the flowing resistance of the medium is effectively reduced.
Drawings
Fig. 1 is a structural sectional view of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in the figure, the low-resistance check valve comprises a valve body 1, a valve core 2, a sealing gasket 3, a spring 4, a valve core seat 5, an elastic retainer ring 6, a valve cover 7, an O-shaped ring 8 and an auxiliary opening device 9; the valve body 1 is provided with a valve cavity and a fluid passage communicated with the valve cavity, and the fluid passage comprises a water inlet passage 11, a water outlet passage 12 and a valve core mounting passage 13; the upper part of the valve core installation channel 13 of the valve body 1 is in threaded connection with a valve cover 7, and the valve cover 7 and the valve body 1 are sealed through an O-shaped ring 8; the valve core mounting channel 13 below the valve cover 7 is sequentially provided with a valve core seat 5, a spring 4, a valve core 2 and a sealing gasket 3, the valve body 1 is provided with a sealing seat 14, and the sealing seat 14 and the sealing gasket 3 can be attached and sealed; the valve core seat 5 and the valve body 1 are fixed through an elastic retainer ring 6; the auxiliary opening device 9 is arranged on the side face of the valve body 1 and comprises a shifting rod 91, an O-shaped ring 92, a gasket 93, a pressing cap 94, a hand wheel 95 and a fixing screw 96, wherein the shifting rod 91 is shaped like , one end of the shifting rod 91 is arranged in the water inlet channel 11 of the valve body 1, the other end of the shifting rod 91 penetrates through the valve body 1 and is connected with the hand wheel 95, and the shifting rod 91 can rotate 360 degrees around the horizontal axis by rotating the hand wheel 95; the deflector rod 91 and the valve body 1 are sealed by an O-shaped ring 92 and fixed by a pressure cap 94; the shift lever 91 and the hand wheel 95 are fixed by a fixing screw 96.
Compared with the prior art, the utility model has the advantages of: when the pressure in front of the valve is reduced or the pressure behind the valve is increased, the valve core drives the sealing gasket to move downwards under the action of the spring force, and when the sealing gasket is tightly contacted with the sealing seat, the valve is closed, so that the water behind the valve is prevented from flowing backwards to the front of the valve to cause pollution; when the pressure of the pipeline is recovered to be normal, the hand wheel can be rotated to drive the shifting rod to rotate, the valve core is pushed to move upwards to open the valve, when a medium passes through the valve, the spring force does not need to be overcome, and the flowing resistance of the medium is effectively reduced.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (1)
1. The low-resistance check valve comprises a valve body, a valve core, a sealing gasket, a spring, a valve core seat, an elastic retainer ring, a valve cover, an O-shaped ring and an auxiliary opening device; the valve body is provided with a valve cavity and a fluid passage communicated with the valve cavity, and the fluid passage comprises a water inlet passage, a water outlet passage and a valve core mounting passage; the upper part of the valve core installation channel of the valve body is in threaded connection with a valve cover, and the valve cover and the valve body are sealed through an O-shaped ring; the method is characterized in that: the valve core mounting channel below the valve cover is sequentially provided with a valve core seat, a spring, a valve core and a sealing gasket, the valve body is provided with a sealing seat, and the sealing seat and the sealing gasket can be attached and sealed; the valve core seat and the valve body are fixed through an elastic retainer ring; the auxiliary opening device is arranged on the side face of the valve body and comprises a shifting rod, an O-shaped ring, a gasket, a pressing cap, a hand wheel and a fixing screw, the shifting rod is shaped like , one end of the shifting rod is arranged in a water inlet channel of the valve body, the other end of the shifting rod penetrates through the valve body and is connected with the hand wheel, and the shifting rod can rotate 360 degrees around a horizontal axis by rotating the hand wheel; the deflector rod and the valve body are sealed through an O-shaped ring and fixed through a pressing cap; the shifting lever and the hand wheel are fixed through a fixing screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022712146.2U CN213809043U (en) | 2020-11-22 | 2020-11-22 | Low-resistance check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022712146.2U CN213809043U (en) | 2020-11-22 | 2020-11-22 | Low-resistance check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213809043U true CN213809043U (en) | 2021-07-27 |
Family
ID=76937097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022712146.2U Active CN213809043U (en) | 2020-11-22 | 2020-11-22 | Low-resistance check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213809043U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526344A (en) * | 2022-01-20 | 2022-05-24 | 良工阀门集团有限公司 | Rust-resistant durable type gate valve |
-
2020
- 2020-11-22 CN CN202022712146.2U patent/CN213809043U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526344A (en) * | 2022-01-20 | 2022-05-24 | 良工阀门集团有限公司 | Rust-resistant durable type gate valve |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |