CN203230441U - Two-way lock for plug-in hard-sealing balance jack - Google Patents
Two-way lock for plug-in hard-sealing balance jack Download PDFInfo
- Publication number
- CN203230441U CN203230441U CN 201320219698 CN201320219698U CN203230441U CN 203230441 U CN203230441 U CN 203230441U CN 201320219698 CN201320219698 CN 201320219698 CN 201320219698 U CN201320219698 U CN 201320219698U CN 203230441 U CN203230441 U CN 203230441U
- Authority
- CN
- China
- Prior art keywords
- valve
- plug
- hard
- valve seat
- lock
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 4
- 229920006324 polyoxymethylene Polymers 0.000 claims abstract description 4
- 230000002441 reversible effect Effects 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
A two-way lock for a plug-in hard-sealing balance jack comprises a valve body and two spool components. The two-way lock is characterized in that two symmetric step valve cavities are formed in the valve body, and the bottom of the valve body is provided with a liquid inlet and a liquid outlet which are communicated with the valve cavities. Each spool component is mounted in one valve cavity and is in an integrated structure. Each spool component comprises a valve sleeve with a fluid outlet. A slim ejector rod is disposed in the valve sleeve. A small spring, a washer, a valve cone, a valve seat, a valve seat pad, a valve stem and a stem cover are sleeved on the ejector rod. A large spring is disposed in a large upper port of the valve sleeve and is fixed in the valve sleeve through a plug. The surface of the valve seat, in contact with the valve cone, is a conical surface. The valve seat is made of polyformaldehyde hard material. The two-way lock is simple in structure. The integral plug-in structure allows the two-way lock to be convenient to mount and maintain; through conical-surface hard sealing, the two-lock lock is resistant to impact, fine in tightness and long in service life.
Description
Technical field
The utility model relates to a kind of reversible lock, refers in particular to the hard sealing and balancing jack of a kind of plug-in reversible lock.
Background technology
Reversible lock is mainly used in coal mine underground hydraulic support frame; with operation valve group; safety valve is controlled the balance of hydraulic support together jointly; protection helps the jack action; when operation valve group is in meta and external force exercising result and does not reach opening pressure of safety valve; it can make jack keep certain duty for a long time; thereby make hydraulic support play due support action under external force; but the reversible lock structure of using is comparatively complicated at present; dismounting is difficult; contamination resistance is limited; particularly be subjected to spatial constraints under the coal mine, make the down-hole keep in repair; replacing brings inconvenience.
The utility model content
The purpose of this utility model is to provide a kind of colliery jack reversible lock, and it is simple in structure, and integral plugged formula structure installation and maintenance are convenient, and the hard sealing of the conical surface of employing is shock-resistant, good seal performance, long service life.
For achieving the above object, the solution that the utility model is taked is: the hard sealing and balancing jack of a kind of plug-in reversible lock, it comprises valve body and core assembly, it is characterized in that: the step valve pocket that offers two symmetries in the valve body, offer the inlet and the liquid outlet that communicate with two valve pockets below the valve body, one cover core assembly respectively is housed in each valve pocket, described core assembly is monolithic construction, comprise the valve pocket that is drilled with fluid hole, one elongated push rod is housed in the valve pocket, be inserted in little spring at push rod, packing ring, valve cone, valve seat, the valve seat pad, valve rod and bar cover, in the upper end port of valve pocket big spring is housed, is fixed in the valve pocket by screw plug, described valve seat and valve cone contact surface are the conical surface, valve seat adopts the polyformaldehyde hard material to make, and described valve body is plank frame.
In the such scheme: described fabrication hole adopts the ball formula seal plug sealing of rising, and described valve body is plank frame.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of core assembly in the utility model.
Among the figure: 1, valve body, 2, core assembly, 3, valve pocket, 4, inlet, 5, liquid outlet, 6, fluid hole, 7, valve pocket, 8, push rod, 9, little spring, 10, packing ring, 11, valve cone, 12, valve seat, 13, valve seat pad, 14, valve rod, 15, the bar cover, 16, big spring, 17, screw plug, 18, fabrication hole.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.
Referring to Fig. 1, the hard sealing and balancing jack of a kind of plug-in reversible lock, it comprises valve body 1 and core assembly 2, it is characterized in that: the step valve pocket 3 that offers two symmetries in the valve body 1, offer the inlet 4 and the liquid outlet 5 that communicate with two valve pockets 3 below the valve body 1, a cover core assembly 2 respectively is housed in each valve pocket 3.
Referring to Fig. 2, described core assembly 2 is monolithic construction, comprise the valve pocket 7 that is drilled with fluid hole 6, one elongated push rod 8 is housed in the valve pocket 7, be inserted in little spring 9, packing ring 10, valve cone 11, valve seat 12, valve seat pad 13, valve rod 14 and bar cover 15 at push rod 8, in the upper end port of valve pocket 7 big spring 16 is housed, be fixed in the valve pocket 7 by screw plug 17, described valve seat 12 is the conical surface with valve cone 14 contact surfaces, valve seat 12 adopts the polyformaldehyde hard materials to make, and described fabrication hole 18 adopts the balls formula seal plug sealing of rising.
Claims (3)
1. the hard sealing and balancing jack of plug-in reversible lock, it comprises valve body (1) and core assembly (2), it is characterized in that: the step valve pocket (3) that offers two symmetries in the valve body (1), offer the inlet (4) and the liquid outlet (5) that communicate with two valve pockets (3) below the valve body (1), a cover core assembly (2) respectively is housed in each valve pocket (3).
2. the hard sealing and balancing jack of a kind of plug-in according to claim 1 reversible lock, it is characterized in that: described core assembly (2) is integral plugged formula structure, comprise the valve pocket (7) that is drilled with fluid hole (6), one elongated push rod (8) is housed in the valve pocket (7), be inserted in little spring (9) at push rod (8), packing ring (10), valve cone (11), valve seat (12), valve seat pad (13), valve rod (14) and bar cover (15), big spring (16) is housed in the upper end port of valve pocket (7), be fixed in the valve pocket (7) by screw plug (17), described valve seat (12) is the conical surface with valve cone (11) contact surface, and valve seat (12) adopts the polyformaldehyde hard material to make.
3. the hard sealing and balancing jack of a kind of plug-in according to claim 1 reversible lock is characterized in that: described fabrication hole (18) adopts the ball formula seal plug sealing of rising, and described valve body (1) is plank frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320219698 CN203230441U (en) | 2013-04-15 | 2013-04-15 | Two-way lock for plug-in hard-sealing balance jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320219698 CN203230441U (en) | 2013-04-15 | 2013-04-15 | Two-way lock for plug-in hard-sealing balance jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230441U true CN203230441U (en) | 2013-10-09 |
Family
ID=49286574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320219698 Expired - Fee Related CN203230441U (en) | 2013-04-15 | 2013-04-15 | Two-way lock for plug-in hard-sealing balance jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203230441U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500122A (en) * | 2014-12-26 | 2015-04-08 | 中煤北京煤矿机械有限责任公司 | Automatic unloading reversible lock |
| CN105401965A (en) * | 2015-09-24 | 2016-03-16 | 北京天地玛珂电液控制系统有限公司 | High-flow safety valve |
-
2013
- 2013-04-15 CN CN 201320219698 patent/CN203230441U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500122A (en) * | 2014-12-26 | 2015-04-08 | 中煤北京煤矿机械有限责任公司 | Automatic unloading reversible lock |
| CN105401965A (en) * | 2015-09-24 | 2016-03-16 | 北京天地玛珂电液控制系统有限公司 | High-flow safety 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20160415 |