CN203363314U - Safety valve on hydraulic pipe - Google Patents
Safety valve on hydraulic pipe Download PDFInfo
- Publication number
- CN203363314U CN203363314U CN 201320382864 CN201320382864U CN203363314U CN 203363314 U CN203363314 U CN 203363314U CN 201320382864 CN201320382864 CN 201320382864 CN 201320382864 U CN201320382864 U CN 201320382864U CN 203363314 U CN203363314 U CN 203363314U
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- CN
- China
- Prior art keywords
- valve
- seat
- type circle
- valve seat
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a safety valve on a hydraulic pipe. The safety valve comprises a valve body, a valve element and a valve base, the valve base is installed in the valve body, the valve base is provided with a pressure relief hole, the valve element is arranged in the valve base and tightly attached to the valve base, the valve element is provided with a valve element hole, O-shaped rings are installed on the inner side of the valve base, the valve base comprises at least two mutually independent parts, the O-shaped rings are arranged at the splicing positions of all the parts of the valve base, the O-shaped rings are made of polytetrafluoroethylene, and the cross section of each O-shaped ring is square. The safety valve has the advantages that the O-shaped rings made of the polytetrafluoroethylene are harder in material and not prone to being scratched by burrs, meanwhile, the cross section of each O-shaped ring is square, and through face-to-face contact of the O-shaped rings and the valve element, the possibility that the O-shaped ring is scratched is reduced.
Description
Technical field
The utility model relates to a kind of safety valve, especially relates 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 arranged in valve body, is provided with relief hole on valve seat, spool is arranged in valve seat and is close to valve seat, be provided with spool bore on 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 is normal, spool bore departs from relief hole, when the pressure in 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 hydraulic pipe line reduces.There is following defect in this structure: due to the reason of production precision, spool bore has some burrs or irregular place, and when spool moves, spool bore is streaked O type circle, burr on spool bore is easily irised wipe brokenly the O type, may cause the sealing of safety valve to go wrong.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of safety valve sealed on the better hydraulic tube of stability, by the improvement for O type circle, reduces the possibility that O type circle is scratched.
The utility model solves the problems of the technologies described above adopted technological scheme: the safety valve on a kind of hydraulic tube, comprise valve body, spool and valve seat, described valve seat is arranged in described valve body, be provided with relief hole on described valve seat, described spool is arranged in described valve seat and is close to described valve seat, be provided with spool bore on 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, 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 on the inboard and close end face of described valve core housing of described sealing seat, 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 described first ring connected in star, be provided with second an annular breach identical with described O type ring cross-section shape on the inboard and close end face of described lock sleeve of described valve core housing, the annular end face of the described second annular breach and described lock sleeve forms the second annular groove, be 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 arranged on 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 described valve casing by voltage regulation screw, when the hydraulic pipe line internal pressure surpasses certain value, described spool moves and withstands on 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 utility model has the advantage of 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 the O type circle material of being made by teflon is harder, 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 on the inboard and close end face of valve core housing of sealing seat, 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 on the inboard and close end face of lock sleeve of valve core housing, the annular end face of the second annular breach and lock sleeve forms the second annular groove, while being provided with the 2nd O type circle in the second annular groove, because the O type circle material of being made by teflon is harder, be difficult for installing, if valve component is as a whole, O type circle will be difficult to nondestructively be arranged in valve seat, so by valve seat being divided into to three parts, can easily O type circle be arranged on to its splicing place.
The accompanying drawing explanation
Fig. 1 is front section view of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
Embodiment: as shown in the figure, safety valve on a kind of hydraulic tube, comprise valve body 1, spool 2 and valve seat 3, and valve seat 3 is arranged in valve body 1, be provided with relief hole 4 on valve seat 3, spool 2 is arranged in valve seat 3 and is close to valve seat 3, is provided with spool bore 5 on 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 on the inboard and close end face of valve core housing 7 of sealing seat 6, 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 first ring connected in star 9, be provided with second an annular breach identical with O type ring cross-section shape on the inboard and close end face of lock sleeve 8 of valve core housing 7, the annular end face of the second annular breach and lock sleeve 8 forms the second annular groove 11, be provided with the 2nd O type circle 12 in the second annular groove 12.
In the present embodiment, valve body 1 also comprises pressure regulation assembly 13 and valve casing 14, valve casing 14 is arranged on 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 valve casing 14 by voltage regulation screw 17, when the hydraulic pipe line internal pressure surpasses certain value, spool 2 moves and withstands on spring seat 15 to valve seat 3 is inner, and an end of valve body 1 is equipped with dirt-proof boot 18.
In use, when pressure is normal, spool bore 5 departs from relief hole 4, when the pressure in 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 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 embodiment of the present utility model by reference to the accompanying drawings, certainly the utility model is not limited to this, 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 face by face with spool 2.
Claims (4)
1. the safety valve on a hydraulic tube, comprise valve body, spool and valve seat, described valve seat is arranged in described valve body, be provided with relief hole on described valve seat, described spool is arranged in described valve seat and is close to described valve seat, be provided with spool bore on 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, 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 on the inboard and close end face of described valve core housing of described sealing seat, 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 described first ring connected in star, be provided with second an annular breach identical with described O type ring cross-section shape on the inboard and close end face of described lock sleeve of described valve core housing, the annular end face of the described second annular breach and described lock sleeve forms the second annular groove, be 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 arranged on 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 described valve casing by voltage regulation screw, when the hydraulic pipe line internal pressure surpasses certain value, described spool moves and withstands on 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 |
|---|---|---|---|
| CN 201320382864 CN203363314U (en) | 2013-06-28 | 2013-06-28 | Safety valve on hydraulic pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320382864 CN203363314U (en) | 2013-06-28 | 2013-06-28 | Safety valve on hydraulic pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203363314U true CN203363314U (en) | 2013-12-25 |
Family
ID=49811078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320382864 Withdrawn - After Issue CN203363314U (en) | 2013-06-28 | 2013-06-28 | Safety valve on hydraulic pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203363314U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353000A (en) * | 2013-06-28 | 2013-10-16 | 宁波长壁流体动力科技有限公司 | Safety valve on hydraulic pipe |
| CN105673056A (en) * | 2016-02-22 | 2016-06-15 | 巨隆集团芜湖兴隆液压有限公司 | Hard sealing safety valve |
-
2013
- 2013-06-28 CN CN 201320382864 patent/CN203363314U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353000A (en) * | 2013-06-28 | 2013-10-16 | 宁波长壁流体动力科技有限公司 | Safety valve on hydraulic pipe |
| CN103353000B (en) * | 2013-06-28 | 2016-09-14 | 宁波长壁流体动力科技有限公司 | A kind of relief valve on hydraulic tube |
| CN105673056A (en) * | 2016-02-22 | 2016-06-15 | 巨隆集团芜湖兴隆液压有限公司 | Hard sealing safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20160914 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |