CN103353000B - A kind of relief valve on hydraulic tube - Google Patents
A kind of relief valve on hydraulic tube Download PDFInfo
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- CN103353000B CN103353000B CN201310268668.XA CN201310268668A CN103353000B CN 103353000 B CN103353000 B CN 103353000B CN 201310268668 A CN201310268668 A CN 201310268668A CN 103353000 B CN103353000 B CN 103353000B
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- valve seat
- spool
- valve
- annular
- described valve
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Abstract
The invention discloses the relief valve on a kind of hydraulic tube, including valve body, spool and valve seat, valve seat is arranged in valve body, and valve seat is provided with relief hole, in spool is arranged on valve seat and is close to valve seat, spool bore it is provided with on spool, the inner side of valve seat is provided with O, and valve seat includes the parts that at least two is separate, and O is arranged on the stitching portion of each parts of valve seat, the material of O is politef, and the cross section of O is square；Harder being difficult to of O material that advantage is made up of politef is scratched by burr, and the cross section of O is square simultaneously, and O is contacted with face by face with spool, decreases the possibility that O is scratched.
Description
Technical field
The present invention relates to a kind of relief valve, especially relate to the relief valve on a kind of hydraulic tube.
Background technology
Existing relief valve includes valve body, valve seat and spool, and valve seat is arranged in valve body, and valve seat is provided with relief hole,
Spool is arranged in valve seat and is close to valve seat, spool is provided with spool bore, equipped with being made up of soft rubber inside valve seat
O, the cross section of O is round.The operation principle of this structure is: when pressure is normal, spool bore deviation relief hole,
When the pressure in fluid pressure line exceedes certain value, spool connects with relief hole to valve seat medial movement, spool bore, pressure
Liquid flows out from relief hole, and the pressure in fluid pressure line reduces.There is following defect in this structure: owing to producing the former of precision
Cause, spool bore has some burrs or irregular place, and when spool moves, spool bore streaks O, spool
O is easily scratched by the burr on hole, and the sealing that may result in relief valve goes wrong.
Summary of the invention
The technical problem to be solved is to provide a kind of relief valve sealed on the more preferable hydraulic tube of stability, passes through
For the improvement of O, reduce the possibility that O is scratched.
The present invention solves the technical scheme that above-mentioned technical problem used: the relief valve on a kind of hydraulic tube, including valve body,
Spool and valve seat, described valve seat is arranged in described valve body, and described valve seat is provided with relief hole, described valve
In core is arranged on described valve seat and it is close to described valve seat, described spool is provided with spool bore, described valve seat
Inner side O is installed, described valve seat includes that the parts that at least two is separate, described O are arranged on
The stitching portion of each parts of described valve seat, the material of described O is politef, the cross section of described O
For square.
Described valve seat includes separate three parts, respectively seal receptacle, valve core housing and lock sleeve, and described is close
Envelope seat splices with described valve core housing, and described valve core housing splices with described lock sleeve, in the inner side of described seal receptacle
And be provided with on the end face of described valve core housing one identical with described O cross sectional shape first annular scarce
Mouthful, described first annular breach forms first annular groove, the first described ring with the annular end face of described valve core housing
It is provided with the first O in connected in star, arranges in the inner side of described valve core housing and on the end face of described lock sleeve
There are second identical with a described O cross sectional shape annular breach, the second described annular breach and described lock
The annular end face of tight set forms the second annular groove, is provided with the second O in the second described annular groove.
Described valve body also includes that regulation component and valve casing, described valve casing are arranged on the outer surface of described valve body, described
Regulation component include spring base and spring, one end of described spring base is fixing with described lock sleeve to be connected, described
The other end of spring base is fixing with described spring to be connected, and described spring is fixedly mounted on described valve by voltage regulation screw
On shell, when in fluid pressure line, pressure exceedes certain value, described spool is internal mobile to described valve seat and withstands on described
Spring base on.
One end of described valve body is provided with dirt-proof boot.
Compared with prior art, it is an advantage of the current invention that valve seat includes the parts that at least two is separate, O sets
Putting the stitching portion at each parts of valve seat, the material of O is politef, and the cross section of O is square, by gathering
The O material that tetrafluoroethene is made is harder, is difficult to be scratched by burr, and the cross section of O is square simultaneously, O with
Spool is contacted with face by face, decreases the possibility that O is scratched；
When valve seat includes separate three parts, respectively seal receptacle, valve core housing and lock sleeve, seal receptacle and spool
Set splicing, valve core housing splices with lock sleeve, is provided with one and O in the inner side of seal receptacle and on the end face of valve core housing
The first annular breach that type ring cross-section shape is identical, first annular breach and the annular end face of valve core housing are formed first annular recessed
Groove, is provided with the first O in first annular groove, be provided with in the inner side of valve core housing and on the end face of lock sleeve
One second identical with O cross sectional shape annular breach, the annular end face of the second annular breach and lock sleeve forms the
Second ring groove, when being provided with the second O in the second annular groove, because of the O material being made up of politef
Matter is harder, is difficult to install, if valve component is an entirety, then O would become hard to nondestructively be arranged in valve seat, institute
With by valve seat being divided into three parts, easily O can be arranged on its stitching portion.
Accompanying drawing explanation
Fig. 1 is the front section view of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment: as it can be seen, the relief valve on a kind of hydraulic tube, including valve body 1, spool 2 and valve seat 3, valve seat
3 are arranged in valve body 1, and valve seat 3 is provided with relief hole 4, in spool 2 is arranged on valve seat 3 and are close to valve seat 3,
Being provided with spool bore 5 on spool 2, the inner side of valve seat 3 is provided with O, and valve seat 3 includes that at least two is separate
Parts, O is arranged on the stitching portion of each parts of valve seat 3, and the material of O is politef, O
Cross section be square.
In the present embodiment, valve seat 3 includes separate three parts, respectively seal receptacle 6, valve core housing 7 and locking
Set 8, seal receptacle 6 splices with valve core housing 7, and valve core housing 7 splices with lock sleeve 8, in the inner side of seal receptacle 6 close
Be provided with a first annular breach identical with O cross sectional shape on the end face of valve core housing 7, first annular breach with
The annular end face of valve core housing 7 forms first annular groove 9, is provided with the first O 10 in first annular groove 9,
The inner side of valve core housing 7 is also provided with second identical with an O cross sectional shape annular on the end face of lock sleeve 8
Breach, the second annular breach forms the second annular groove 11, in the second annular groove 12 with the annular end face of lock sleeve 8
It is provided with the second O 12.
In the present embodiment, valve body 1 also includes regulation component 13 and valve casing 14, and valve casing 14 is arranged on the appearance of valve body 1
Face, regulation component 13 includes spring base 15 and spring 16, and one end of spring base 15 is fixing with lock sleeve 8 to be connected, bullet
The other end of spring abutment 15 is fixing with spring 16 to be connected, and spring 16 is fixedly mounted on valve casing 14 by voltage regulation screw 17,
When in fluid pressure line, pressure exceedes certain value, spool 2 is internal mobile to valve seat 3 and withstands on spring base 15, valve body 1
One end dirt-proof boot 18 is installed.
In using, when pressure is normal, spool bore 5 deviates relief hole 4, when the pressure in fluid pressure line exceedes certain value,
Spool 2 connects with relief hole 4 to valve seat 3 medial movement, spool bore 5, and pressure liquid flows out from relief hole 4, hydraulic pressure
Pressure in pipeline reduces, and in this process, spool bore 5 streaks O, the O type being made up of politef
Harder being difficult to of loop material matter is scratched by burr, and the cross section of O is square simultaneously, and O is connect with face by face with spool 2
Touch, decrease the possibility that O is scratched.
Above in conjunction with accompanying drawing, embodiments of the invention are described in detail, certainly the invention is not limited in this, O
Cross sectional shape be not necessarily intended to square, as long as O and spool 2 are contacted with face by face and just can reach solution technology and ask
The purpose of topic.
Claims (1)
1. the relief valve on hydraulic tube, including valve body, spool and valve seat, described valve seat is arranged on described valve body
In, described valve seat is provided with relief hole, in described spool is arranged on described valve seat and is close to described valve seat,
Being provided with spool bore on described spool, the inner side of described valve seat is provided with O, it is characterised in that described valve seat
Including three separate parts, respectively seal receptacle, valve core housing and lock sleeve, described O is arranged on described
The stitching portion of each parts of valve seat, the material of described O is politef, and the cross section of described O is
Square；
Described seal receptacle splices with described valve core housing, and described valve core housing splices with described lock sleeve, described
The inner side of seal receptacle and be provided with on the end face of described valve core housing one identical with described O cross sectional shape
First annular breach, the annular end face of described first annular breach and described valve core housing forms first annular groove,
It is provided with the first O, in the inner side of described valve core housing and near described lock sleeve in described first annular groove
End face on be provided with second identical with described O cross sectional shape annular breach, the second described annular lacks
Mouth forms the second annular groove with the annular end face of described lock sleeve, is provided with the 2nd O in the second described annular groove
Type circle；
Described valve body also includes that regulation component and valve casing, described valve casing are arranged on the outer surface of described valve body, described
Regulation component include spring base and spring, one end of described spring base is fixing with described lock sleeve to be connected, described
The other end of spring base is fixing with described spring to be connected, and described spring is fixedly mounted on described valve by voltage regulation screw
On shell, when in fluid pressure line, pressure exceedes certain value, described spool is internal mobile to described valve seat and withstands on described
Spring base on；One end of described valve body is provided with dirt-proof boot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310268668.XA CN103353000B (en) | 2013-06-28 | 2013-06-28 | A kind of relief valve on hydraulic tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310268668.XA CN103353000B (en) | 2013-06-28 | 2013-06-28 | A kind of relief valve on hydraulic tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103353000A CN103353000A (en) | 2013-10-16 |
| CN103353000B true CN103353000B (en) | 2016-09-14 |
Family
ID=49309397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310268668.XA Active CN103353000B (en) | 2013-06-28 | 2013-06-28 | A kind of relief valve on hydraulic tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103353000B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896157B (en) * | 2015-05-26 | 2017-12-01 | 芜湖中意液压科技股份有限责任公司 | Direct-power safety valve |
| CN109707883A (en) * | 2019-01-22 | 2019-05-03 | 安徽理工大学 | A kind of anti-clogging safety valve |
| CN111894926B (en) * | 2020-07-10 | 2022-04-29 | 乐清市东风煤矿设备有限公司 | Safety valve of hydraulic support |
| CN113294569A (en) * | 2021-06-08 | 2021-08-24 | 江苏嘉胜石油科技有限公司 | Micro-opening safety valve with handle threaded connection |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246030A (en) * | 1992-12-21 | 1993-09-21 | Westinghouse Air Brake Company | Safety valve arrangement |
| CN2314186Y (en) * | 1997-07-24 | 1999-04-14 | 杭州宝鼎实业有限公司 | Hydraulic safety valve |
| CN2467833Y (en) * | 2001-01-20 | 2001-12-26 | 姜东权 | Compound sealing double-water draining safety valve |
| CN202203465U (en) * | 2011-08-26 | 2012-04-25 | 宁波长壁流体动力科技有限公司 | Safety valve |
| CN203363314U (en) * | 2013-06-28 | 2013-12-25 | 宁波长壁流体动力科技有限公司 | Safety valve on hydraulic pipe |
-
2013
- 2013-06-28 CN CN201310268668.XA patent/CN103353000B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246030A (en) * | 1992-12-21 | 1993-09-21 | Westinghouse Air Brake Company | Safety valve arrangement |
| CN2314186Y (en) * | 1997-07-24 | 1999-04-14 | 杭州宝鼎实业有限公司 | Hydraulic safety valve |
| CN2467833Y (en) * | 2001-01-20 | 2001-12-26 | 姜东权 | Compound sealing double-water draining safety valve |
| CN202203465U (en) * | 2011-08-26 | 2012-04-25 | 宁波长壁流体动力科技有限公司 | Safety valve |
| CN203363314U (en) * | 2013-06-28 | 2013-12-25 | 宁波长壁流体动力科技有限公司 | Safety valve on hydraulic pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103353000A (en) | 2013-10-16 |
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