CN203515637U - Pilot-operated check valve for hydraulic support - Google Patents
Pilot-operated check valve for hydraulic support Download PDFInfo
- Publication number
- CN203515637U CN203515637U CN201320563053.5U CN201320563053U CN203515637U CN 203515637 U CN203515637 U CN 203515637U CN 201320563053 U CN201320563053 U CN 201320563053U CN 203515637 U CN203515637 U CN 203515637U
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- valve
- valve body
- piston
- hydraulic support
- push rod
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Abstract
Disclosed is a pilot-operated check valve for a hydraulic support. The pilot-operated check valve comprises a valve body. The valve body is provided with a liquid inlet P, a liquid outlet A and a control port K. The valve body is further provided with a working chamber in the horizontal direction. A piston is placed in the working chamber. An ejector rod is placed in the piston and sleeved with an injector rod spring, one end of the ejector rod spring abuts against a step of the ejector rod, and the other end of the ejector rod spring abuts against an isolation sleeve. The isolation sleeve makes close contact with a valve seat. The valve seat makes close contact with a valve sleeve. A valve element is placed in the valve sleeve and is in rigid sealing with the spherical surface of the valve seat. A valve element spring is placed in the valve element, one end of the valve element spring abuts against the valve element, and the other end of the valve element spring abuts against a threaded sleeve. The threaded sleeve is in screw-thread fit with the valve body. A threaded plug is in screw-thread fit with the valve body and makes contact with the piston. The pilot-operated check valve is simple and compact in structure, convenient to machine, long in service life, strong in pollution resistance and good in sealing reliability.
Description
Technical field
The utility model relates to a kind of hydraulic control one-way valve, refers in particular to the hydraulic control one-way valve that a kind of metered flow for coal mine fully-mechanized mining working hydraulic support is 200L/min.
Background technology
In the prior art, the structure of hydraulic control one-way valve is varied, as disclosed in Chinese patent " hydraulic control one-way valve that operating pressure is 40MPa " (CN2763520, open day 2006.03.08), it comprises valve body, valve body has valve pocket, on valve body, have K hole, B hole, communicate with valve pocket with O hole, the right-hand member of valve pocket is tightened end bell and spigot joint, from the left end of valve pocket successively loading spring, the spring pad of fixed band spool, the metal valve of termination band valve rubber sealing mat, the valve pocket of termination band rubber gasket, intermediate sleeve, push rod, tighten end stifled, on end bell and spigot joint, there are 12 Φ 5 liquid-through holes.It can control the direction that hydraulic cylinder, post working chamber enter, return liquid, can seal closely the pressure fluid of working chamber after closing, and has effectively solved unloading and utter long and high-pitched sounds and unload shock wave phenomenon, for coal mine fully-mechanized mining working hydraulic support.
Summary of the invention
The purpose of this utility model is to provide a kind of hydraulic support hydraulic control one-way valve, and it is simple in structure, compact, is convenient to processing, long service life, and stain resistance is strong, and sealing reliability is good.
For achieving the above object, the utility model is taked following technical scheme: a kind of hydraulic support hydraulic control one-way valve, it comprises valve body, above valve body, have inlet P, liquid outlet A, control a mouthful K, valve body horizontal direction is established a working chamber, in working chamber, place piston, in piston, place push rod, top stem casing push rod spring, the step of push rod is withstood in push rod spring one end, the other end withstands separation sleeve, separation sleeve and valve seat close contact, valve seat and valve pocket close contact, in valve pocket, place spool, spool and valve seat sphere seal firmly, in spool, place spool, spool is withstood in valve core spring one end, the other end withstands swivel nut, swivel nut coordinates with valve body screw thread, screw plug coordinates with valve body screw thread, screw plug contacts with piston.
This kind of hydraulic support hydraulic control one-way valve is simple in structure, compact, is convenient to processing, long service life, and stain resistance is strong, and sealing reliability is good.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the present embodiment.
In Fig. 1: 1, valve body, 2, screw plug, 3, piston, 4, Φ 45 * 3.1O type circle, 5, push rod, 6, Φ 35 * 3.1O type circle, 7, A35 * 30 * 1.5 back-up ring, 8, push rod spring, 9, separation sleeve, 10, valve seat, 11, spool, 12, valve pocket, 13, Φ 39 * 3.1O type circle, 14, A39 * 34 * 1.5 back-up ring, 15, valve core spring, 16, swivel nut, 17, Φ 20 * 2.4O type circle.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof, the utility model is remake to description.The model of the present embodiment is CHFDY200/40.
Referring to Fig. 1, a kind of hydraulic support hydraulic control one-way valve, it comprises valve body 1, valve body 1 has inlet P above, liquid outlet A, control a mouthful K, valve body 1 horizontal direction is established a working chamber, in working chamber, place piston 3, in piston 3, place push rod 5, push rod 5 cover push rod spring 8, the step of push rod 5 is withstood in push rod spring 8 one end, the other end withstands separation sleeve 9, separation sleeve 9 and valve seat 10 close contacts, valve seat 10 and valve pocket 12 close contacts, in valve pocket 12, place spool 11, spool 11 seals firmly with valve seat 10 spheres, in spool 11, place spool 15, spool 11 is withstood in valve core spring 15 one end, the other end withstands swivel nut 16, swivel nut 16 and valve body 1 threaded engagement, screw plug 2 and valve body 1 threaded engagement, screw plug 2 contacts with piston 3.
Referring to Fig. 1, between described screw plug 2 and valve body 1, by Φ 45 * 3.1O type circle 4, sealed.
Referring to Fig. 1, between described piston 3 and valve body 1, by Φ 35 * 3.1O type circle 6 and A35 * 30 * 1.5 back-up ring 7, sealed.
Referring to Fig. 1, between described swivel nut 16 and valve body 1, by Φ 39 * 3.1O type circle 13 and A39 * 34 * 1.5 back-up ring 14, sealed.
Referring to Fig. 1, between described valve seat 10 and valve body 1, by Φ 20 * 2.4O type circle 17, sealed.
Referring to Fig. 1, be to improve the reliability of hydraulic control one-way valve, improve application life, strengthen sealing, the special following measures that adopts: the one, spool 11 adopts ball face sealing with the sealing of valve seat 10, and the 2nd, the material of valve seat 10 adopts copper that anti-wear performance is good as raw material.
Referring to Fig. 1, its operating principle is as follows: when hydraulic system feed flow, the oil pressure of inlet P is higher than liquid outlet A, and separated with valve seat 10 at the effect bottom spool 11 of oil pressure, liquid flows to A mouth by P mouth, thereby makes executing agency's action; When hydraulic system stops feed flow, the oil pressure of liquid outlet A is higher than inlet P, under the effect of valve core spring 15 and oil pressure, and spool 11 closures, with valve seat 10 close contacts, liquid can not flow to P mouth by A mouth, thus locking executing agency.When hydraulic system unloads, system, by controlling a mouthful K feed flow, promotes push rod 5 and moves right under the effect of oil pressure, and push rod 5 promotes spool 11, makes spool 11 separated with valve seat 10, thereby makes liquid flow to inlet P from liquid outlet A.
Referring to Fig. 1, swivel nut 16 is provided with a M27 screw thread mouth, can be used for connection safety valve, prevents system overload.
The present embodiment is CHFDY200/40 hydraulic control one-way valve, and operating pressure is 40MPa, and nominal flow rate is 200L/min, appearance and size 139 * 75 * 55, and working media: 5% emulsion, can under 10-50 ℃ of liquid temperature, normally work.Also can, according to matched bracket action request, by feed liquor plate, safety valve tandem compound, be used.
Claims (6)
1. a hydraulic support hydraulic control one-way valve, it comprises valve body (1), it is characterized in that: valve body (1) has inlet P above, liquid outlet A, control a mouthful K, valve body (1) horizontal direction is established a working chamber, in working chamber, place piston (3), in piston (3), place push rod (5), push rod (5) cover push rod spring (8), the step of push rod (5) is withstood in push rod spring (8) one end, the other end withstands separation sleeve (9), separation sleeve (9) and valve seat (10) close contact, valve seat (10) and valve pocket (12) close contact, in valve pocket (12), place spool (11), spool (11) seals firmly with valve seat (10) sphere, in spool (11), place valve core spring (15), spool (11) is withstood in valve core spring (15) one end, the other end withstands swivel nut (16), swivel nut (16) and valve body (1) threaded engagement, screw plug (2) and valve body (1) threaded engagement, screw plug (2) contacts with piston (3).
2. a kind of hydraulic support hydraulic control one-way valve according to claim 1, is characterized in that: between described screw plug (2) and valve body (1), by Φ 45 * 3.1O type circle (4), sealed.
3. a kind of hydraulic support hydraulic control one-way valve according to claim 1, is characterized in that: between described piston (3) and valve body (1), by Φ 35 * 3.1O type circle (6) and A35 * 30 * 1.5 back-up ring (7), sealed.
4. a kind of hydraulic support hydraulic control one-way valve according to claim 1, is characterized in that: between described swivel nut (16) and valve body (1), by Φ 39 * 3.1O type circle (13) and 3A9 * 34 * 1.5 back-up ring (14), sealed.
5. a kind of hydraulic support hydraulic control one-way valve according to claim 1, is characterized in that: between described valve seat (10) and valve body (1), by Φ 20 * 2.4O type circle (17), sealed.
6. a kind of hydraulic support hydraulic control one-way valve according to claim 1, is characterized in that: described swivel nut (16) is provided with a M27 screw thread mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320563053.5U CN203515637U (en) | 2013-09-05 | 2013-09-05 | Pilot-operated check valve for hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320563053.5U CN203515637U (en) | 2013-09-05 | 2013-09-05 | Pilot-operated check valve for hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203515637U true CN203515637U (en) | 2014-04-02 |
Family
ID=50374582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320563053.5U Expired - Fee Related CN203515637U (en) | 2013-09-05 | 2013-09-05 | Pilot-operated check valve for hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203515637U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020093869A1 (en) * | 2018-11-09 | 2020-05-14 | 太原理工大学 | Water base proportional valve and control method thereof |
| CN111236998A (en) * | 2019-10-29 | 2020-06-05 | 北京天地玛珂电液控制***有限公司 | Intrinsically safe electro-hydraulic control reversing valve for aqueous medium mine |
-
2013
- 2013-09-05 CN CN201320563053.5U patent/CN203515637U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020093869A1 (en) * | 2018-11-09 | 2020-05-14 | 太原理工大学 | Water base proportional valve and control method thereof |
| CN111236998A (en) * | 2019-10-29 | 2020-06-05 | 北京天地玛珂电液控制***有限公司 | Intrinsically safe electro-hydraulic control reversing valve for aqueous medium mine |
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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: 20140402 Termination date: 20150905 |
|
| EXPY | Termination of patent right or utility model |