CN207316152U - A kind of check valve - Google Patents
A kind of check valve Download PDFInfo
- Publication number
- CN207316152U CN207316152U CN201721312505.7U CN201721312505U CN207316152U CN 207316152 U CN207316152 U CN 207316152U CN 201721312505 U CN201721312505 U CN 201721312505U CN 207316152 U CN207316152 U CN 207316152U
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- CN
- China
- Prior art keywords
- check valve
- cock
- valve body
- capping
- ring
- 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.)
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Abstract
It the utility model is related to a kind of check valve, including valve body（1）, return spring（2）, cock（4）, positioning sleeve（5）And capping（6）, the capping（6）With valve body（1）It is connected through a screw thread, and fluid sealant is equipped with threaded connection place, further ensures the leakproofness of whole check valve；Cock（4）Pass through return spring（2）Effect and the second O-ring（7）Form sealing surface so that delivery outlet（9）Pressurized seal, do not flow backwards.
Description
Technical field
The utility model relates to valving technical field, in particular to a kind of check valve.
Background technology
Check valve volume of the prior art is larger, and there are the problem of poor sealing performance.
Such as the Chinese invention patent that publication No. is 104676053 A of CN, it discloses a kind of check valve, including valve body,
And the spool in valve body is installed on, which is equipped with support spring, and internal face is equipped with first at the valve body import
Elastic component；First elastic component and the valve interior wall face of import opposite side are equipped with baffle.Add the upward drawing of spool
Power, solves check valve during locking, it is poorly sealed the problem of.But lack sealing structure between valve body and spool, seal
Poor performance.
Utility model content
In order to solve above-mentioned technological deficiency existing in the prior art, the purpose of this utility model is to provide a kind of unidirectional
Valve, solves the risk that connecting line in the prior art is more, occupied space causes greatly, because being revealed when three-way connection connects failure
Problem.
In order to realize above-mentioned purpose of design, the scheme that the utility model uses is as follows：
The check valve of the utility model, including valve body, return spring, cock, positioning sleeve and capping, the capping and valve body
It is connected through a screw thread, maintains easily maintenance, and fluid sealant is equipped with threaded connection place, further ensures the close of whole check valve
Feng Xing；Cock forms sealing surface by the effect of return spring with the second O-ring so that the pressurized seal of delivery outlet, does not flow backwards.
Preferably, second O-ring is between capping and positioning sleeve.
In any of the above-described scheme preferably, the positioning sleeve is fastened in the step groove of valve body.
In any of the above-described scheme preferably, the inner wall of the positioning sleeve is tapered；The end end axial plane of cock is tapered.
Air pressure in the course of work when air inlet declines, and at this moment cock makes it to the left by the power and output terminal atmospheric pressure of return spring
Mobile, the tapered end face of cock is contacted with the second O-ring so that the second O-ring is compressed to form sealing surface, to the gas of delivery outlet
Means of press seals, does not flow backwards.The sealing surface of the check valve of the utility model is to be formed by the compression of valve port and O-ring with generally leaning on
The sealing of vulcanization of rubber component is substantially reduced compared to cost.
In any of the above-described scheme preferably, it is provided with air inlet in the capping；The end of valve body is provided with delivery outlet.
In any of the above-described scheme preferably, the end of the valve body is provided with groove, and it is O-shaped that first is equipped with the groove
Circle.
In any of the above-described scheme preferably, the unlatching air pressure of the cock is 15-35kPa.
In any of the above-described scheme preferably, the middle part of the cock is provided with through hole.
In any of the above-described scheme preferably, the capping and the threaded connection place of valve body are equipped with fluid sealant, further
Ensure the leakproofness of whole check valve.
The check valve of the utility model has the following advantages in summary：Capping is connected through a screw thread with valve body, convenient dimension
Shield maintenance, and fluid sealant is equipped with threaded connection place, further ensure the leakproofness of whole check valve；Cock passes through return bullet
The effect of spring forms sealing surface with the second O-ring so that the pressurized seal of delivery outlet, does not flow backwards.
Brief description of the drawings
Fig. 1 is the structure diagram according to a preferred embodiment of the check valve of the utility model.
Fig. 2 is the sectional view according to preferred embodiment shown in Fig. 1 of the check valve of the utility model.
Embodiment
It is that the following description is substantially merely exemplary and be not intended to the limitation disclosure, application or purposes.Below
The embodiment of the check valve of the utility model is further described with reference to Figure of description.
As shown in Figure 1 and Figure 2, according to the utility model check valve structure diagram.
The check valve of the utility model, including valve body 1, return spring 2, cock 4, positioning sleeve 5 and capping 6, the capping 6
It is connected through a screw thread with valve body 1, maintains easily maintenance, and fluid sealant is equipped with threaded connection place, further ensures whole list
To the leakproofness of valve；Cock 4 forms sealing surface by the effect of return spring 2 with the second O-ring 7 so that the air pressure of delivery outlet 9
Sealing, does not flow backwards.
In the present embodiment, second O-ring 7 is between capping 6 and positioning sleeve 5.
In the present embodiment, the positioning sleeve 5 is fastened in the step groove of valve body 1.
In the present embodiment, the inner wall of the positioning sleeve 5 is tapered；The end end axial plane of cock 4 is tapered.In the course of work
When the air pressure of air inlet 8 declines, at this moment cock 4 makes it move to the left by the power and output terminal atmospheric pressure of return spring 2, plug
The tapered end face of door 4 is contacted with the second O-ring 7 so that the second O-ring 7 is compressed to form sealing surface, the air pressure to delivery outlet 9
Sealing, does not flow backwards.The sealing surface of the check valve of the utility model is to be formed by the compression of valve port and O-ring and generally lean on rubber
Glue vulcanization component sealing is substantially reduced compared to cost.
In the present embodiment, it is provided with air inlet 8 in the capping 6；The end of valve body 1 is provided with delivery outlet 9.
In the present embodiment, the end of the valve body 1 is provided with groove, and the first O-ring 3 is equipped with the groove.
In the present embodiment, the unlatching air pressure of the cock 4 is 15-35kPa.
In the present embodiment, the middle part of the cock 4 is provided with through hole.
In the present embodiment, the capping 6 and the threaded connection place of valve body 1 are equipped with fluid sealant, are further ensured that whole list
To the leakproofness of valve.
The check valve of the utility model has the following advantages in summary：Capping 6 is connected through a screw thread with valve body 1, convenient
Maintenance and Repair, and fluid sealant is equipped with threaded connection place, further ensure the leakproofness of whole check valve；Cock 4 is by returning
The effect of position spring 2 forms sealing surface with the second O-ring 7 so that the pressurized seal of delivery outlet 9, does not flow backwards.
It will be apparent to those skilled in the art that the check valve of the utility model includes any group of each several part in this specification
Close.As space is limited and in order to make specification concise, these combinations are not discussed in detail one by one herein, but seen this specification
Afterwards, the scope of the utility model that any combination for each several part being made of this specification is formed is self-evident.
Claims (10)
1. a kind of check valve, including valve body（1）, return spring（2）, cock（4）, positioning sleeve（5）And capping（6）, its feature exists
In：Capping（6）With valve body（1）It is connected through a screw thread；Cock（4）Pass through return spring（2）Effect and the second O-ring（7）Shape
Into sealing surface.
2. check valve as claimed in claim 1, it is characterised in that：Second O-ring（7）Positioned at capping（6）With positioning sleeve（5）It
Between.
3. check valve as claimed in claim 1 or 2, it is characterised in that：Positioning sleeve（5）It is fastened on valve body（1）Step groove in.
4. check valve as claimed in claim 1 or 2, it is characterised in that：Positioning sleeve（5）Inner wall it is tapered.
5. check valve as claimed in claim 1, it is characterised in that：Cock（4）End end axial plane it is tapered.
6. check valve as claimed in claim 1, it is characterised in that：Capping（6）On be provided with air inlet（8）；Valve body（1）End
It is provided with delivery outlet（9）.
7. check valve as claimed in claim 1, it is characterised in that：Valve body（1）End be provided with groove, the is equipped with the groove
One O-ring（3）.
8. the check valve as described in claim 1 or 5, it is characterised in that：Cock（4）Unlatching air pressure be 15-35kPa.
9. the check valve as described in claim 1 or 5, it is characterised in that：Cock（4）Middle part be provided with through hole.
10. check valve as claimed in claim 1, it is characterised in that：Capping（6）With valve body（1）Threaded connection place be equipped with it is close
Sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721312505.7U CN207316152U (en) | 2017-10-12 | 2017-10-12 | A kind of check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721312505.7U CN207316152U (en) | 2017-10-12 | 2017-10-12 | A kind of check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207316152U true CN207316152U (en) | 2018-05-04 |
Family
ID=62429551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721312505.7U Active CN207316152U (en) | 2017-10-12 | 2017-10-12 | A kind of check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207316152U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553133A (en) * | 2019-09-17 | 2019-12-10 | 重庆宗星机械有限责任公司 | Grease injection check valve |
-
2017
- 2017-10-12 CN CN201721312505.7U patent/CN207316152U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553133A (en) * | 2019-09-17 | 2019-12-10 | 重庆宗星机械有限责任公司 | Grease injection check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210629 Address after: No.2666, Development Zone Avenue, Ruian Economic Development Zone, Wenzhou City, Zhejiang Province, 325200 Patentee after: Zhejiang Ruili air compressor equipment Co.,Ltd. Address before: Ruian City, Wenzhou City, 325200 Zhejiang Province Economic Development Zone No. 1169 Meng Lu Patentee before: Ruili Group Ruian Auto Parts Co.,Ltd. |
|
| TR01 | Transfer of patent right |