CN208587550U - A kind of adjustable check valve of pressure stabilizing - Google Patents
A kind of adjustable check valve of pressure stabilizing Download PDFInfo
- Publication number
- CN208587550U CN208587550U CN201820907256.4U CN201820907256U CN208587550U CN 208587550 U CN208587550 U CN 208587550U CN 201820907256 U CN201820907256 U CN 201820907256U CN 208587550 U CN208587550 U CN 208587550U
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- China
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- spool
- valve body
- check valve
- screw thread
- spring
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Abstract
The utility model discloses a kind of pressure stabilizings, and check valve is adjusted, it includes valve body, the both ends of the valve body are provided with the flange for connection, the valve body is internally provided with spool, the outside of the spool is equipped with bearing of the multiple row for limiting to spool, the end face of the spool is pressed with spring, the other end of the spring is limited by adjusting ring, the adjustment ring, which is connected through a screw thread, to be mounted on valve body internal screw thread, the valve body internal thread machining is on the inner wall of valve body, back is installed female on the valve body internal screw thread, the female cooperation that is in contact with adjustment ring of the back.Have many advantages, such as to stablize air compressor machine outlet compressed air pressure, adjustable cracking pressure, control gas flow.
Description
Technical field
The utility model relates to a kind of pressure stabilizings, and check valve is adjusted, and belong to check valve apparatus field.
Background technique
Power station is installed on low pressure gas system air compressor machine export pipeline with low pressure gas system one way valve, and structure is spring
A metallic sealing section is compressed, compressed air can only push sealing surface open hence into gas tank from the other side of spring.And gas tank
In compressed air can not from spring side return pneumatics pusher side.
Although such check valve functionally can satisfy control, gas is not back to air compressor machine, in some special circumstances
Under, such as air compressor machine inner compressor defect or the unstable reason of air compressor machine suction end air inflow, cause air compressor machine to export side pressure
Contracting air impulsive motion causes the vibration of air compressor machine export pipeline to drive the hidden danger of entire low pressure gas system pipe network vibration.And due to
Spring institute means of press seals component is relatively thin, limits measure without effective, often will appear seal member in use and valve body collision issues
Abnormal sound may cause seal member dislocation and check valve caused to lose function when serious.
Utility model content
The utility model aim is to provide a kind of adjustable check valve of pressure stabilizing, has and stablizes air compressor machine outlet compressed air pressure
The advantages that power, adjustable cracking pressure, control gas flow.
In order to realize above-mentioned technical characteristic, purpose of the utility model is realized as follows: a kind of pressure stabilizing is adjustable single
To valve, it includes valve body, and the both ends of the valve body are provided with the flange for connection, and the valve body is internally provided with spool,
The outside of the spool is equipped with bearing of the multiple row for limiting to spool, and the end face of the spool is pressed with spring, the bullet
The other end of spring is limited by adjusting ring, and the adjustment ring, which is connected through a screw thread, to be mounted on valve body internal screw thread, the valve
Internal screw thread process is equipped with back mother on the inner wall of valve body on the valve body internal screw thread, the back is female to be in contact with adjustment ring
Cooperation.
Two-sided butterfly chapeau de fer is arranged in the end face that the spring and spool are in contact.
The sealing surface of the spool is pasted with one layer of rubber pad.
The end face matched on the spool with two-sided dish-shaped chapeau de fer is machined with circular groove.
The bearing uses linear bearing, is evenly arranged on the inner wall of valve body in symmetrical structure.
The utility model has the advantages that:
1, check valve designed by this structure can adjust cracking pressure, and cracking pressure is adjusted to more slightly lower than gas tank pressure,
The pressure difference of check valve two sides can then be reduced, to reduce pulsation when air flowing, to reduce the risk of pipe network vibration.
2, check valve designed by this structure has four row bearing to limit spool, avoids valve in the design of spool surrounding
Core and valve body sealing surface misplace, and guarantee the good function of check valve.
3, the thickness of spool is about 4 times of single bearing ball, even if there is individual balls to wear, is also rolled there are also 2 or more
Pearl limits spool, it is ensured that the job stability of check valve.
4, spool back designs have circular arc type groove and matching two-sided dish-shaped chapeau de fer to carry out radial biography to spring force
It leads, guarantees the direction of spring stress.
5, one-way valve designs are detachable, when the damage of spool rubber sealing surface, can screw out adjustment ring and back is female, thus
Spool is taken out, rubber sealing surface is replaced, keeps the maintenance of valve more convenient.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the main sectional view of the utility model check valve.
Fig. 2 is Section A-A figure in the utility model Fig. 1.
In figure: 1 spool；2 flanges；3 bearings；4 two-sided dish-shaped chapeau de fers；5 springs；6 valve body internal screw threads；7 adjustment rings；8 back are female；
9 valve bodies.
Specific embodiment
The embodiments of the present invention is described further with reference to the accompanying drawing.
Check valve is adjusted in a kind of pressure stabilizing referring to FIG. 1-2, it includes valve body 9, and the both ends setting of the valve body 9 is useful
In the flange 2 of connection, the valve body 9 is internally provided with spool 1, and the outside of the spool 1 is equipped with multiple row for spool 1
The bearing 3 of limit, the end face of the spool 1 are pressed with spring 5, and the other end of the spring 5 is limited by adjusting ring 7,
The adjustment ring 7, which is connected through a screw thread, to be mounted on valve body internal screw thread 6, inner wall of the processing of valve body internal screw thread 6 in valve body 9
On, back mother 8 is installed, the back female 8 is in contact cooperation with adjustment ring 7 on the valve body internal screw thread 6.It is female by adjusting ring and back
Position, the decrement of adjustable springs is so as to adjust spool opening force.
Further, two-sided butterfly chapeau de fer 4 is arranged in the end face that the spring 5 and spool 1 are in contact.At the back of spool,
Design has circular arc type groove, and equipped with two-sided dish-shaped chapeau de fer identical with groove radian, two-sided dish chapeau de fer is contacted with spring, this
Design can preferably guarantee the elastic force of spring radially passing to spool.
Further, the sealing surface of the spool 1 is pasted with one layer of rubber pad.When the valve is closed, avoidable spool touches
Valve body-side sealing surface is hit, sealing surface is damaged.
Further, the end face matched on the spool 1 with two-sided dish-shaped chapeau de fer 4 is machined with circular groove.
Further, the bearing 3 uses linear bearing, is evenly arranged on the inner wall of valve body 9 in symmetrical structure.4 column bearings
Spool is positioned, it is ensured that the movement of spool does not shift.
The course of work and working principle of the utility model:
Respectively there is a column bearing in the four-quadrant extreme position of valve interior wall, bearing ball size is that a quarter of spool thickness is left
It is right, it is ensured that the bearing ball contacted with spool has 2 or more, when such design can allow spool to move in valve body, has preferable
Stability.There is circular arc type groove at the spool back side, and equipped with two-sided dish-shaped chapeau de fer identical with groove radian, is used as spring transmission force
Guiding.Dish-shaped chapeau de fer is contacted with spring.In the outlet side of valve inner, there is one section of internal screw thread, is used to upper adjustment ring and hollow
Back is female, and by adjusting the female position of ring and back, spool cracking pressure is adjusted.
It is female by adjusting ring and back before use, first do action test, the decrement of spring is adjusted, this check valve is opened
Open pressure adjust it is slightly lower to the rated operating pressure than gas tank, then by check valve loaded on air compressor machine outlet.
In use, after air compressor machine starting, the check valve still short time is in close state, when reaching cracking pressure,
Check valve is just opened.Since unidirectional valve opening pressure is close to gas tank rated operating pressure, and spring has certain decrement, therefore can
Offset the pulse of a part of air pressure.Since the design of check valve four-quadrant has four row bearing, and spool is thicker, and Shi Keyou 2 or more
Ball limits spool, can preferably be oriented to spool, reduces the radial action collision valve body of spool.
When air compressor machine is shut down, air compressor machine export pipeline pressure is lower than the cracking pressure of check valve setting, acts in spring
Under, closed check valve.Since there be one layer of rubber pad in seal spool surface side, preferable sealing function and rigid collision can be avoided to damage
Bad spool.If after can also screwing out back mother and adjustment ring, taking out spool it was found that valve can not seal, replacing rubber sealing surface.
Above-described embodiment is used to illustrate the utility model, rather than limits the utility model, practical at this
In novel spirit and scope of protection of the claims, to any modifications and changes that the utility model is made, this reality is both fallen within
With novel protection scope.
Claims (5)
1. a kind of pressure stabilizing is adjusted check valve, feature its be: it includes valve body (9), and the both ends of the valve body (9) are provided with
For the flange (2) of connection, the valve body (9) is internally provided with spool (1), and the outside of the spool (1) is equipped with multiple row
The end face of bearing (3) for limiting to spool (1), the spool (1) is pressed with spring (5), the other end of the spring (5)
It is limited by adjusting ring (7), the adjustment ring (7), which is connected through a screw thread, to be mounted on valve body internal screw thread (6), the valve body
Internal screw thread (6) is processed on the inner wall of valve body (9), and it is female (8) to be equipped with back on the valve body internal screw thread (6), the back female (8) and
Adjustment ring (7) is in contact cooperation.
2. check valve is adjusted in a kind of pressure stabilizing according to claim 1, it is characterised in that: the spring (5) and spool (1)
Two-sided butterfly chapeau de fer (4) is arranged in the end face being in contact.
3. check valve is adjusted in a kind of pressure stabilizing according to claim 1, it is characterised in that: the sealing surface of the spool (1)
It is pasted with one layer of rubber pad.
4. check valve is adjusted in a kind of pressure stabilizing according to claim 1, it is characterised in that: on the spool (1) with it is two-sided
The end face that dish-shaped chapeau de fer (4) matches is machined with circular groove.
5. check valve is adjusted in a kind of pressure stabilizing according to claim 1, it is characterised in that: the bearing (3) is using linear
Bearing is evenly arranged on the inner wall of valve body (9) in symmetrical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820907256.4U CN208587550U (en) | 2018-06-12 | 2018-06-12 | A kind of adjustable check valve of pressure stabilizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820907256.4U CN208587550U (en) | 2018-06-12 | 2018-06-12 | A kind of adjustable check valve of pressure stabilizing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208587550U true CN208587550U (en) | 2019-03-08 |
Family
ID=65536811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820907256.4U Active CN208587550U (en) | 2018-06-12 | 2018-06-12 | A kind of adjustable check valve of pressure stabilizing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208587550U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531134A (en) * | 2020-04-17 | 2021-10-22 | 盾安环境技术有限公司 | Expansion valve and heat exchange system with same |
-
2018
- 2018-06-12 CN CN201820907256.4U patent/CN208587550U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531134A (en) * | 2020-04-17 | 2021-10-22 | 盾安环境技术有限公司 | Expansion valve and heat exchange system with same |
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