CN103353000A - Safety valve on hydraulic pipe - Google Patents
Safety valve on hydraulic pipe Download PDFInfo
- Publication number
- CN103353000A CN103353000A CN201310268668XA CN201310268668A CN103353000A CN 103353000 A CN103353000 A CN 103353000A CN 201310268668X A CN201310268668X A CN 201310268668XA CN 201310268668 A CN201310268668 A CN 201310268668A CN 103353000 A CN103353000 A CN 103353000A
- Authority
- CN
- China
- Prior art keywords
- valve
- seat
- valve seat
- type circle
- described valve
- 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.)
- Granted
Links
Landscapes
- Safety Valves (AREA)
Abstract
The invention discloses a safety valve on a hydraulic pipe. The safety valve comprises a valve body, a valve core and a valve seat, wherein the valve seat is mounted in the valve body, a pressure relief hole is formed in the valve seat, the valve core is arranged in the valve seat and closely attached to the valve seat, a valve core hole is formed in the valve core, and an O-shaped ring is mounted on the inner side of the valve seat; and the valve seat comprises at least two parts which are mutually independent, the O-shaped ring is arranged at joints of all parts of the valve seat and made of polytetrafluoroethylene, and the section of the O-shaped ring is square. The safety valve has the advantages as follows: the O-shaped ring made of polytetrafluoroethylene is harder and cannot be scratched by burrs easily; and at the same time, the section of the O-shaped ring is square, and the O-shaped ring is contacted with the valve core through surfaces, so that the possibility that the O-shaped ring is scratched is reduced.
Description
Technical field
The present invention relates to a kind of safety valve, especially relate to the safety valve on a kind of hydraulic tube.
Background technique
Existing safety valve comprises valve body, valve seat and spool, and valve seat is installed in the valve body, is provided with relief hole on the valve seat, spool is arranged in the valve seat and with valve seat to be close to, be provided with spool bore on the spool, the O type circle of being made by soft rubber is equipped with in the valve seat inboard, and the cross section of O type circle is round.The working principle of this structure is: when pressure was normal, spool bore departed from relief hole, when the pressure in the hydraulic pipe line surpasses certain value, spool is to the valve seat medial movement, spool bore is communicated with relief hole, and pressure liquid flows out from relief hole, and the pressure in the hydraulic pipe line reduces.There is following defective in this structure: owing to the reason of production precision, spool bore has some burrs or irregular place, and when spool moved, spool bore was streaked O type circle, burr on the spool bore is irised wipe brokenly the O type easily, may cause the sealing of safety valve to go wrong.
Summary of the invention
Technical problem to be solved by this invention provides a kind of safety valve that seals on the better hydraulic tube of stability, by the improvement for O type circle, reduces the possibility that O type circle is scratched.
The present invention solves the problems of the technologies described above the technological scheme that adopts: the safety valve on a kind of hydraulic tube, comprise valve body, spool and valve seat, described valve seat is installed in the described valve body, be provided with relief hole on the described valve seat, described spool is arranged in the described valve seat and with described valve seat to be close to, be provided with spool bore on the described spool, the installed inside of described valve seat has O type circle, described valve seat comprises at least two separate parts, described O type circle is arranged on splicing place of described each parts of valve seat, the material of described O type circle is teflon, and the cross section of described O type circle is square.
Described valve seat comprises three separate parts, be respectively sealing seat, valve core housing and lock sleeve, described sealing seat and the splicing of described valve core housing, described valve core housing and the splicing of described lock sleeve, be provided with a first ring v notch v identical with described O type ring cross-section shape in the inboard of described sealing seat and the end face of close described valve core housing, the annular end face of described first ring v notch v and described valve core housing forms the first ring connected in star, be provided with an O type circle in the described first ring connected in star, be provided with second an annular breach identical with described O type ring cross-section shape in the inboard of described valve core housing and the end face of close described lock sleeve, the annular end face of the described second annular breach and described lock sleeve forms the second annular groove, is provided with the 2nd O type circle in described the second annular groove.
Described valve body also comprises pressure regulation assembly and valve casing, described valve casing is installed in the outer surface of described valve body, described pressure regulation assembly comprises spring seat and spring, one end of described spring seat is fixedly connected with described lock sleeve, the other end of described spring seat is fixedly connected with described spring, described spring is fixedly mounted on the described valve casing by voltage regulation screw, when the hydraulic pipe line internal pressure surpassed certain value, described spool moved and withstands on the described spring seat to described valve seat is inner.
One end of described valve body is equipped with dirt-proof boot.
Compared with prior art, the invention has the advantages that valve seat comprises at least two separate parts, O type circle is arranged on splicing place of each parts of valve seat, the material of O type circle is teflon, and the cross section of O type circle is square, and is harder by the O type circle material that teflon is made, be difficult for being scratched by burr, the cross section of O type circle is square simultaneously, and O type circle contacts with face by face with spool, has reduced the possibility that O type circle is scratched;
When valve seat comprises three separate parts, be respectively sealing seat, valve core housing and lock sleeve, sealing seat and valve core housing splicing, valve core housing and lock sleeve splicing, be provided with a first ring v notch v identical with O type ring cross-section shape in the inboard of sealing seat and the end face of close valve core housing, the annular end face of first ring v notch v and valve core housing forms the first ring connected in star, be provided with an O type circle in the first ring connected in star, be provided with second an annular breach identical with O type ring cross-section shape in the inboard of valve core housing and the end face of close lock sleeve, the annular end face of the second annular breach and lock sleeve forms the second annular groove, when being provided with the 2nd O type circle in the second annular groove, because harder by the O type circle material that teflon is made, be difficult for installing, if valve component is as a whole, then O type circle will be difficult to nondestructively be installed in the valve seat, so by valve seat being divided into three parts, can easily O type circle be installed in its splicing place.
Description of drawings
Fig. 1 is front section view of the present invention.
Embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
Embodiment: as shown in the figure, safety valve on a kind of hydraulic tube comprises valve body 1, spool 2 and valve seat 3, and valve seat 3 is installed in the valve body 1, be provided with relief hole 4 on the valve seat 3, spool 2 is arranged in the valve seat 3 and with valve seat 3 to be close to, and is provided with spool bore 5 on the spool 2, and the installed inside of valve seat 3 has O type circle, valve seat 3 comprises at least two separate parts, O type circle is arranged on splicing place of valve seat 3 each parts, and the material of O type circle is teflon, and the cross section of O type circle is square.
In the present embodiment, valve seat 3 comprises three separate parts, be respectively sealing seat 6, valve core housing 7 and lock sleeve 8, sealing seat 6 and valve core housing 7 splicings, valve core housing 7 and lock sleeve 8 splicings, be provided with a first ring v notch v identical with O type ring cross-section shape in the inboard of sealing seat 6 and the end face of close valve core housing 7, the annular end face of first ring v notch v and valve core housing 7 forms first ring connected in star 9, be provided with an O type circle 10 in the first ring connected in star 9, be provided with second an annular breach identical with O type ring cross-section shape in the inboard of valve core housing 7 and the end face of close lock sleeve 8, the annular end face of the second annular breach and lock sleeve 8 forms in the second annular groove 11, the second annular grooves 12 and is provided with the 2nd O type circle 12.
In the present embodiment, valve body 1 also comprises pressure regulation assembly 13 and valve casing 14, valve casing 14 is installed in the outer surface of valve body 1, pressure regulation assembly 13 comprises spring seat 15 and spring 16, and an end of spring seat 15 is fixedly connected with lock sleeve 8, and the other end of spring seat 15 is fixedly connected with spring 16, spring 16 is fixedly mounted on the valve casing 14 by voltage regulation screw 17, when the hydraulic pipe line internal pressure surpassed certain value, spool 2 moved and withstands on the spring seat 15 to valve seat 3 inside, and an end of valve body 1 is equipped with dirt-proof boot 18.
In the use, when pressure is normal, spool bore 5 departs from relief hole 4, when the pressure in the hydraulic pipe line surpasses certain value, spool 2 is to valve seat 3 medial movement, spool bore 5 is communicated with relief hole 4, pressure liquid flows out from relief hole 4, pressure in the hydraulic pipe line reduces, and in this process, spool bore 5 is streaked O type circle, the O type circle material of being made by teflon is difficult for being scratched by burr more firmly, the cross section of O type circle is square simultaneously, and O type circle contacts with face by face with spool 2, has reduced the possibility that O type circle is scratched.
The above is described in detail embodiments of the invention by reference to the accompanying drawings, and the present invention is not limited thereto certainly, and the sectional shape of O type circle is not necessarily square, as long as O type circle contacts the purpose that just can reach the technical solution problem with spool 2 by face with face.
Claims (4)
1. the safety valve on the hydraulic tube, comprise valve body, spool and valve seat, described valve seat is installed in the described valve body, be provided with relief hole on the described valve seat, described spool is arranged in the described valve seat and with described valve seat to be close to, be provided with spool bore on the described spool, the installed inside of described valve seat has O type circle, it is characterized in that described valve seat comprises at least two separate parts, described O type circle is arranged on splicing place of described each parts of valve seat, the material of described O type circle is teflon, and the cross section of described O type circle is square.
2. according to the safety valve on a kind of hydraulic tube claimed in claim 1, it is characterized in that described valve seat comprises three separate parts, be respectively sealing seat, valve core housing and lock sleeve, described sealing seat and the splicing of described valve core housing, described valve core housing and the splicing of described lock sleeve, be provided with a first ring v notch v identical with described O type ring cross-section shape in the inboard of described sealing seat and the end face of close described valve core housing, the annular end face of described first ring v notch v and described valve core housing forms the first ring connected in star, be provided with an O type circle in the described first ring connected in star, be provided with second an annular breach identical with described O type ring cross-section shape in the inboard of described valve core housing and the end face of close described lock sleeve, the annular end face of the described second annular breach and described lock sleeve forms the second annular groove, is provided with the 2nd O type circle in described the second annular groove.
3. according to the safety valve on a kind of hydraulic tube claimed in claim 2, it is characterized in that described valve body also comprises pressure regulation assembly and valve casing, described valve casing is installed in the outer surface of described valve body, described pressure regulation assembly comprises spring seat and spring, one end of described spring seat is fixedly connected with described lock sleeve, the other end of described spring seat is fixedly connected with described spring, described spring is fixedly mounted on the described valve casing by voltage regulation screw, when the hydraulic pipe line internal pressure surpassed certain value, described spool moved and withstands on the described spring seat to described valve seat is inner.
4. according to the safety valve on a kind of hydraulic tube claimed in claim 3, it is characterized in that an end of described valve body is equipped 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 true CN103353000A (en) | 2013-10-16 |
| CN103353000B 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) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896157A (en) * | 2015-05-26 | 2015-09-09 | 芜湖中意液压科技股份有限责任公司 | Direct-acting type safety valve |
| CN109707883A (en) * | 2019-01-22 | 2019-05-03 | 安徽理工大学 | A kind of anti-clogging safety valve |
| CN111894926A (en) * | 2020-07-10 | 2020-11-06 | 浙江乐港矿业机械有限公司 | 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896157A (en) * | 2015-05-26 | 2015-09-09 | 芜湖中意液压科技股份有限责任公司 | Direct-acting type safety valve |
| 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 |
| CN111894926A (en) * | 2020-07-10 | 2020-11-06 | 浙江乐港矿业机械有限公司 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103353000B (en) | 2016-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016205208A1 (en) | Full-root-radius-threaded wing nut having increased wall thickness | |
| CN103353000A (en) | Safety valve on hydraulic pipe | |
| CN203363314U (en) | Safety valve on hydraulic pipe | |
| CN104842124A (en) | Reversing valve element assembly manufacturing method | |
| CN103510970B (en) | A kind of core assembly for colliery comprehensive mining hydraulic bracket reversal valve | |
| CN104806200A (en) | Plunger-type double-passage different-direction synchronous joint control check valve for double-layer continuous oil pipe | |
| CN108032999A (en) | A kind of undercarriage buffer unit | |
| CN204226915U (en) | A kind of rapid pipe joint | |
| CN203516861U (en) | Straight-through type one-way valve | |
| CN203036135U (en) | Pressure detection joint ball seal structure | |
| CN205745779U (en) | A kind of screw connected valve seat and high pressure connection | |
| KR101274921B1 (en) | Grease valve | |
| CN104930224A (en) | Through-type check valve of fire resistant oil vacuum filter | |
| CN204082938U (en) | Structure improved adapter assembly | |
| CN202972266U (en) | Double-movable-joint pipe sealing structure | |
| CN105650371A (en) | Oil pump connecting device for hydraulic steering gear | |
| CN205743833U (en) | A kind of high pressure VR blocks up | |
| KR101906327B1 (en) | Joining part having sleeve | |
| KR20160103701A (en) | Pipe coupler having check hole | |
| CN104595267B (en) | Implanted direct relief valve | |
| CN104075018A (en) | Piston push rod for pipeline stop valve | |
| CN204457698U (en) | Well water filling counter-flow resisting device | |
| CN203743478U (en) | Ball valve for electric water heater | |
| CN215258416U (en) | A fixed mounting device for pressure measurement pipe fitting | |
| CN202118024U (en) | Cylinder bottom oil-way shutoff valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |