CN202811589U - Hydraulic control one-way valve - Google Patents
Hydraulic control one-way valve Download PDFInfo
- Publication number
- CN202811589U CN202811589U CN 201220366355 CN201220366355U CN202811589U CN 202811589 U CN202811589 U CN 202811589U CN 201220366355 CN201220366355 CN 201220366355 CN 201220366355 U CN201220366355 U CN 201220366355U CN 202811589 U CN202811589 U CN 202811589U
- Authority
- CN
- China
- Prior art keywords
- valve body
- hydraulic control
- chamber
- way valve
- 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.)
- Expired - Fee Related
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Abstract
The utility model belongs to the field of machinery and discloses a hydraulic control one-way valve which is mainly used for height adjusting cylinders of MG400/920-WD type electric traction coal mining machines. The hydraulic control one-way valve comprises a valve body, and two one-way valves and two safety valves are arranged in the valve body. The hydraulic control one-way valve is characterized in that a liquid inlet hole and a liquid outlet hole of the valve body are arranged on the upper side and the lower side of the valve body respectively, the valve body is connected with two liquid passing plates through high-pressure rubber hoses, the two liquid passing plates are communicated with oil ducts of a chamber A and a chamber B of a height adjusting cylinder, and one port of each oil duct is provided with a threaded connector. The hydraulic control one-way valve is convenient to mount and demount during maintenance.
Description
Technical field
The utility model belongs to mechanical field, is mainly used in MG400/920-WD type electrical haulage shearer adjust high cylinder, is specifically related to a kind of Pilot operated check valve.
Background technique
Pilot operated check valve is system during to the adjust high cylinder feed flow in the effect of heightening system of coal mining machine, enters adjust high cylinder A chamber or B chamber (such as A chamber feed liquor, liquid is then returned in the B chamber) through Pilot operated check valve; When feed flow stops, Pilot operated check valve is then closed the A of adjust high cylinder, and the B chamber prevents that fluid from flowing backwards, and after A chamber or the B chamber superpressure, safety valve discharges excess energy.
The Pilot operated check valve of MG400/920-WD electrical haulage shearer adjust high cylinder is installed in respectively on the adjust high cylinder piston rod of the left and right sides.When the working surface coal mining activity, be subjected to the impact of working environment and job specification, the Pilot operated check valve of frequent operation is often damaged, or lose performance.But because its present position and installation form have brought very large inconvenience to replacement and installation.
Summary of the invention
The utility model aims to provide when maintenance dismounting, a kind of Pilot operated check valve easy for installation.
The utility model comprises valve body, two one-way valves and two safety valves are set in the valve body, it is characterized in that the inlet opening of valve body and the up and down both sides that liquid outlet opening all is arranged on valve body, valve body connected the liquid plate by high-pressure rubber pipe, cross the liquid plate and be provided with two oil ducts that are communicated with respectively adjust high cylinder A chamber and B chamber, a port of oil duct is provided with threaded coupling.
The liquid plate of crossing of the present utility model is installed on the piston rod of adjust high cylinder, and the oil duct of crossing the liquid plate leads to piston rod, and the high-pressure rubber pipe that is used for logical oil is connected with the threaded coupling of crossing the liquid plate by inipple, and the other end of high-pressure rubber pipe is connected with the oil duct of valve body.
Dismounting, easy for installation during the utility model maintenance.
Description of drawings
Fig. 1 is the structural drawing of existing MG400/920-WD electrical haulage shearer adjust high cylinder Pilot operated check valve.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the utility model embodiment's structural drawing.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the structural drawing of crossing the liquid plate among the utility model embodiment.
Fig. 6 be Fig. 5 along A-A to sectional drawing.
Fig. 7 is use scheme of installation of the present utility model.
Among the figure, 1, seal ring, 2, valve seat, 3, spool, 4, seal ring, 5, spring, 6, spring seat, 7, spacer, 8, seal ring, 9, spring, 10, spring seat, 11, guide sleeve, 12, spool, 13, valve seat, 14, seal ring, 15, hydraulic control piston, 16, valve body, 17, screw, 18, seal ring, 19, screw, 20, screw, 21, cross the liquid plate, 22, adjust high cylinder, 23, mounting hole, 24, threaded coupling, 25, oil duct, A, B are liquid-through hole.
Embodiment
Embodiment: Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, present embodiment comprises valve body 16, valve body 16 interior two one-way valves and two safety valves of arranging, the inlet opening of valve body 16 and liquid outlet opening all are arranged on the up and down both sides that valve body uses state.
Cross the liquid plate and also be provided with six mounting holes 23 that are connected with the electrical haulage shearer adjust high cylinder.
Described one-way valve is comprised of spool 12, hydraulic control piston 15, spring 9, spring seat 10, guide sleeve 11, valve seat 13, seal ring 8,14.
Described safety valve is comprised of spool 3, spring 5, spring seat 6, spacer 7, valve seat 2, seal ring 1,4.
Claims (1)
1. Pilot operated check valve, comprise valve body, two one-way valves and two safety valves are set in the valve body, it is characterized in that the inlet opening of valve body and the up and down both sides that liquid outlet opening all is arranged on valve body, valve body connected the liquid plate by high-pressure rubber pipe, cross the liquid plate and be provided with two oil ducts that are communicated with respectively adjust high cylinder A chamber and B chamber, a port of oil duct is provided with threaded coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366355 CN202811589U (en) | 2012-07-27 | 2012-07-27 | Hydraulic control one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366355 CN202811589U (en) | 2012-07-27 | 2012-07-27 | Hydraulic control one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202811589U true CN202811589U (en) | 2013-03-20 |
Family
ID=47870471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220366355 Expired - Fee Related CN202811589U (en) | 2012-07-27 | 2012-07-27 | Hydraulic control one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202811589U (en) |
-
2012
- 2012-07-27 CN CN 201220366355 patent/CN202811589U/en not_active Expired - Fee Related
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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: 20130320 Termination date: 20190727 |