CN202834287U - Vent valve used on single hydraulic prop - Google Patents
Vent valve used on single hydraulic prop Download PDFInfo
- Publication number
- CN202834287U CN202834287U CN 201220420456 CN201220420456U CN202834287U CN 202834287 U CN202834287 U CN 202834287U CN 201220420456 CN201220420456 CN 201220420456 CN 201220420456 U CN201220420456 U CN 201220420456U CN 202834287 U CN202834287 U CN 202834287U
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- Prior art keywords
- valve body
- valve
- cavity
- prop
- core hammer
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- Expired - Fee Related
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Abstract
A vent valve used on single hydraulic prop comprises a valve body and an end cap installed on an upper opening of the valve body. A cavity is formed by an inner side of the end cap and the upper opening of the valve body. An upper portion of the cavity is communicated with outside through a filter screen. A core hammer is arranged in the cavity. The core hammer matches with assembly in the valve of the lower portion of the cavity. The vent valve used on single hydraulic prop is characterized in that a valve wall of the valve body is a steel structural component. Connection screws are arranged on a connection surface of the steel structural component. The vent valve used on single hydraulic prop is capable of changing the valve wall of the valve body into the steel structural component, using the connection threads on the connection surface of the steel structural component to connect with a prop spacer plate in a thread mode and therefore the connection is reliable and not easy to deform. Moreover, a cone-shaped core hammer is changed into a ball-shape. A ring-shaped boss is arranged on an edge of the upper opening of the valve body. When the prop is in a condition of being held horizontally, the core hammer is not easy to cross the boss and the leakage caused by the pressure of the valve rod of the prop.
Description
[technical field]
The utility model belongs to a kind of hydraulic prop vent valve.
[background technique]
At present, be installed in the vent valve on hydraulic prop top, its structure comprises valve body, and the end cap that is installed in the valve body upper end-hole, this end cap inwall and valve body upper end-hole form a cavity, the top of cavity communicates with the external world through filter screen, is provided with core hammer in the cavity, and this core hammer matches with the valve internal component of cavity bottom.Pillar is under the vertical state during operation, and the core hammer relies on deadweight to press down valve rod, guarantees that all the time the pillar inner chamber communicates with the external world; When pillar was in horizontal off working state, because the core hammer breaks away from valve rod, stage clip was pressed on spool and blocks air flue on the sealing surface in the valve.There are the following problems in actual applications for the vent valve of this structure: because described valve body is the plastic thin wall structural member; the dividing plate that connects with valve body of pillar top is thin plate in addition; therefore, after spinning, both screw threads usually can cause Deformation of Face Seal, and the phenomenon that leaks air.In addition, because the reasons in structure of core hammer, the factor affecting such as vibrated in transportation process, the core hammer is prone to top pressure valve bar and the generation that causes leaking.
[summary of the invention]
The problems referred to above that exist for solving prior art, the utility model aims to provide a kind of hydraulic prop vent valve, and this vent valve connects reliably with the pillar dividing plate, the phenomenon that occurs leaking because of distortion can not occur.
For achieving the above object, the utility model has adopted following technological scheme: this hydraulic prop structure of vent valve, comprise valve body, and the end cap that is installed in the valve body upper end-hole, this end cap inwall and valve body upper end-hole form a cavity, the top of described cavity communicates with the external world through filter screen, be provided with core hammer in this cavity, this core hammer matches with the valve internal component of described cavity bottom, it is characterized in that: the valve body wall of described valve body is the steel design part, is provided with connecting thread at the conjunction plane of this steel design part.
During as preferred implementation, described core hammer is a spheroid, is provided with an annular boss in the opening's edge of described valve body upper end-hole.
Beneficial effect: compared with prior art, the utility model utilizes connecting thread and pillar dividing plate on this steel design part conjunction plane to spin after making the valve body wall of valve body into the steel design part, connects and reliably and not metaboly can occur.Moreover, make the core of cone-shaped hammer into spheroid, and after the opening's edge of valve body upper end-hole arranges an annular boss, when pillar is under the horizontal state, because spheroid is difficult for crossing this boss, has eliminated its top pressure valve bar and produced the phenomenon of leakage.
For deepening understanding of the present utility model, be described in further detail by embodiment below in conjunction with accompanying drawing.
[description of drawings]
Fig. 1 is vertical sectional structure schematic representation of an embodiment of the utility model.
Among the figure: valve body 1, air flue 11, end cap 2, filter screen 21, filter core 22, core hammer 3, stage clip 4, valve rod 5, spool 6, plug wire 7.
[embodiment]
Referring to Fig. 1.This hydraulic prop comprises valve body 1 with the structure of vent valve, and the end cap 2 that is installed in valve body 1 upper end-hole, and these end cap 2 inwalls and valve body 1 upper end-hole form a cavity, and the top of described cavity communicates with the external world through filter screen 21.Be provided with core hammer 3 in cavity, core hammer 3 matches with the valve internal component of described cavity bottom.The valve body wall of described valve body 1 is the steel design part, is provided with connecting thread at the conjunction plane of this steel design part bottom and pillar dividing plate.Among Fig. 1, when pillar was in vertical state core hammer 3 and pushes up mutually with valve rod 5, valve rod 5 backed down spool 6, and therefore, the pillar inner chamber communicates the communication external world through the sealing channel of air flue 11, spool 3 controls and core hammer 3 with air vent on the valve body 1 upper end-hole surface of contact with cavity.
During as preferred implementation, described core hammer 3 is a spheroid, is provided with an annular boss in the opening's edge of described valve body 1 upper end-hole.When pillar was in horizontal state, this annular boss can stop that core hammer 3 enters valve body 1 upper end-hole, avoided backing down spool 6 in the situation such as transportation, caused leakage.
Claims (2)
1. hydraulic prop vent valve, comprise valve body (1), and the end cap (2) that is installed in valve body (1) upper end-hole, this end cap (2) inwall and valve body (1) upper end-hole form a cavity, the top of described cavity communicates with the external world through filter screen (21), be provided with core hammer (3) in this cavity, this core hammer (3) matches with the valve internal component of described cavity bottom, it is characterized in that: the valve body wall of described valve body (1) is the steel design part, is provided with connecting thread at the conjunction plane of this steel design part.
2. vent valve as claimed in claim 1 is characterized in that: described core hammer (3) is a spheroid, is provided with an annular boss in the opening's edge of described valve body (1) upper end-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220420456 CN202834287U (en) | 2012-08-23 | 2012-08-23 | Vent valve used on single hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220420456 CN202834287U (en) | 2012-08-23 | 2012-08-23 | Vent valve used on single hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202834287U true CN202834287U (en) | 2013-03-27 |
Family
ID=47945995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220420456 Expired - Fee Related CN202834287U (en) | 2012-08-23 | 2012-08-23 | Vent valve used on single hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202834287U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830180A (en) * | 2017-10-26 | 2018-03-23 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Manned underwater vehicle ballast tank breather valve |
-
2012
- 2012-08-23 CN CN 201220420456 patent/CN202834287U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107830180A (en) * | 2017-10-26 | 2018-03-23 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Manned underwater vehicle ballast tank breather valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20180823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |