CN204419223U - Hydraulic control one-way valve is impacted in a kind of low unloading - Google Patents
Hydraulic control one-way valve is impacted in a kind of low unloading Download PDFInfo
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- CN204419223U CN204419223U CN201520034932.8U CN201520034932U CN204419223U CN 204419223 U CN204419223 U CN 204419223U CN 201520034932 U CN201520034932 U CN 201520034932U CN 204419223 U CN204419223 U CN 204419223U
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Abstract
A hydraulic control one-way valve is impacted in low unloading for coal mine fully-mechanized mining working hydraulic support, and it comprises valve body, core assembly, has a valve pocket, A1 mouth, A2 mouth, A3 mouth, P1 mouth, P2 mouth, K1 mouth, K2 mouth intercommunication in valve body; Have unloading throttling valve pocket in valve pocket, in-built throttling valve core, throttling spring, throttling screw plug, throttling valve core has throttle hole; Nonreturn valve core, little valve seat, small valve core and swivel nut composition nonreturn valve core assembly; Put into little spring, nonreturn valve core assembly, large valve seat in valve pocket, embed guide pin bushing, nonreturn valve core assembly and the large valve seat conical surface seal firmly, have seal groove and the damping hole of anti-uninstall impact in guide pin bushing; Place large push rod and big spring in joint, valve pocket and joint form core assembly by trip bolt; Have K3 mouth in joint, the inner chamber of K3 mouth and large push rod, K1 mouth, K2 mouth communicate; Core assembly integrally plug connector loads valve pocket.
Description
Technical field
The utility model relates to a kind of hydraulic control one-way valve, refers in particular to a kind of column oil cylinder hydraulic control one-way valve for colliery large fully-mechanized mining working high workload support resistance hydraulic.
Background technology
In the prior art, the structure of hydraulic control one-way valve is varied, along with performing comprehensive coal mining technical development, high working face, high workload resistance support are widely used, along with coal mining highly increases, column cylinder diameter increases, when hydraulic control one-way valve unloads, moment impact pressure increase, cause column rise cylinder, safety valve frequently open and other parts damage.But the hydraulic control one-way valve used at present is mostly parts assembled type, without very to the mechanism design of property, make to impact by unloading the hydraulic support caused and cannot normally use, owing to limiting by conditions down-hole, make to maintenance of underground, change and bring inconvenience, thus affect the output in colliery.
Chinese patent once disclosed a kind of coal mine hydraulic supporting hydraulic control one-way valve (CN201420296781), it comprises valve body, plinth, the valve pocket of about one through step is provided with in valve body, valve pocket divides left valve pocket and right valve chamber, spring one and valve cone is loaded in plinth, plinth is withstood in spring one one end, the other end gos deep into valve cone endoporus, valve seat is contained in plinth right-hand member, plinth, spring one, valve cone and valve seat are integrally plugged in left valve pocket, valve cone and valve seat seal firmly, the in-built large push rod of end cap, the in-built little push rod of large push rod, little top stem casing spring two, end cap, large push rod, little push rod and spring two are integrally plugged in right valve chamber.
Chinese patent once disclosed a kind of hydraulic support hydraulic control one-way valve (CN201320563053), it comprises valve body, inlet P is had above valve body, liquid outlet A, control mouth K, valve body horizontal direction establishes a working chamber, piston is placed in working chamber, push rod is placed in piston, 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, spool is placed in valve pocket, spool and valve seat sphere seal firmly, spool is placed in 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 and piston contact.
Summary of the invention
The purpose of this utility model is to provide a kind of low unloading for coal mine fully-mechanized mining working hydraulic support to impact hydraulic control one-way valve, and it adopts plug-in structure, compact conformation, be convenient to installation and maintenance, hermetically closing dependable performance, liquid supply speed is fast, be active in one's movements, flow is large, and unloading is impacted little.
For achieving the above object, the solution that the utility model is taked is: hydraulic control one-way valve is impacted in a kind of low unloading, it comprises valve body, core assembly, have a valve pocket, A1 mouth, A2 mouth, A3 mouth, P1 mouth, P2 mouth, K1 mouth, K2 mouth in valve body, A1 mouth, A2 mouth, A3 mouth, P1 mouth, P2 mouth, K1 mouth, K2 mouth communicate with valve pocket; Have unloading throttling valve pocket in valve pocket, install throttling valve core, throttling spring, throttling screw plug in unloading throttling valve pocket, throttling spring one end is against on the step of throttling valve core, the other end withstands throttling screw plug, throttling valve core has throttle hole; Nonreturn valve core, little valve seat, small valve core and swivel nut composition nonreturn valve core assembly, place little valve seat and swivel nut in nonreturn valve core, small valve core inserts swivel nut, little valve seat and nonreturn valve core; Little spring, nonreturn valve core assembly, large valve seat is put in valve pocket, embed guide pin bushing, throttling valve core is withstood in little spring one end, the other end withstands nonreturn valve core assembly, and nonreturn valve core assembly and the large valve seat conical surface seal firmly, has seal groove and the damping hole of anti-uninstall impact in guide pin bushing; Place large push rod and big spring in joint, valve pocket and joint form core assembly by trip bolt, and big spring one end is against on the step of large push rod, the other end withstands guide pin bushing; Have K3 mouth in joint, the inner chamber of K3 mouth and large push rod, K1 mouth, K2 mouth communicate; Core assembly integrally plug connector loads valve pocket.
This valve A3 mouth is connected with column cavity of resorption through connecting bolt, easy accessibility, compact conformation.Nonreturn valve core assembly and the large valve seat conical surface seal firmly, hermetically closing more reliable performance.Core assembly is plug connector integrally, loads valve pocket by special tool entirety, can integral demounting when need keep in repair, to facilitate well servicing under the attendant of colliery.
Its operating principle is: when reversal valve is to P1 mouth, P2 confession liquid, the spring force of little spring is overcome under the effect of hydraulic coupling, back down nonreturn valve core assembly, liquid enters column cavity of resorption feed flow from valve pocket through A3 mouth or A1 mouth, A2 mouth, thus make column (jack) setting prop, when column is raised to working resistance, reversal valve stops feed flow, under hydraulic coupling and spring-force driven dual unidirectional core assembly and large valve seat sternly hermetically enclosed, ensure column continuous firing.When reversal valve is to K1 mouth, K2 mouth or K3 confession liquid, the large push rod of liquid-driving, first backs down small valve core, then backs down core assembly, and liquid flows back to emulsion box from A1 mouth, A2 mouth, A3 mouth through P1 mouth, P2 mouth, realizes falling post.Open instantaneously under the effect of setting prop flow in process spool in hydraulic coupling, the cross section that from then on liquid in valve pocket and nonreturn valve core assembly moment is opened flows out to A3 mouth, the feed liquor response making valve rapidly, reduces the moment pressure reduction of feed liquor and column cavity of resorption, reduces feed liquor and impacts.Falling in post process when the moment of small valve core opened by push rod, the seal groove impacted due to anti-uninstall on guide pin bushing and the application fluids of damping hole can reduce greatly to the impact of push rod, small valve core can not be opened and closed frequently and form the water hammer of column cavity of resorption, and make 2-3 times that is increased to lock hydraulic coupling of the pressure of column cavity of resorption moment, thus other hydraulic fittings of protection hydraulic control one-way valve and hydraulic support, when hydraulic control one-way valve stops unloading nonreturn valve core assembly to close, throttling valve core closing liquid flows in valve pocket and nonreturn valve core assembly through the damping hole of throttling valve core, because damping hole is less, so the process that whole nonreturn valve core assembly is closed can be relatively long, thus the surge produced when reducing closedown.
Accompanying drawing explanation
Fig. 1 is that the master of the present embodiment looks cross-sectional view.
Fig. 2 is the top view cross section structural representation of the present embodiment.
Fig. 3 is A place close-up schematic view in Fig. 1.
Fig. 4 is B place close-up schematic view in Fig. 1.
In figure: 1, valve body, 2, joint, 3, large push rod, 4, big spring, 5, trip bolt, 6, guide pin bushing, 7, valve pocket, 8, large valve seat, 9, little valve seat, 10, valve rod, 11, nonreturn valve core, 12, swivel nut, 13, little spring, 14, throttling screw plug, 15, throttling valve core, 16, throttling spring, 17, unloading throttling valve pocket, 18, valve pocket, 19, A1 mouth, 20, P1 mouth, 21, seal groove, 22, damping hole, 23, K1 mouth, 24, K3 mouth, 25, K2 mouth, 26, P2 mouth, 27, A2 mouth, 28, A3 mouth, 29, throttle hole.
Detailed description of the invention
Below in conjunction with example and accompanying drawing thereof, description is remake to the utility model.
See Fig. 1-Fig. 4, hydraulic control one-way valve is impacted in a kind of low unloading, it comprises valve body 1, core assembly, have a valve pocket 18 in valve body 1, A1 mouth 19, A2 mouth 27, A3 mouth 28, P1 mouth 20, P2 mouth 26, K1 mouth 23, K2 mouth 25, A1 mouth 19, A2 mouth 27, A3 mouth 28, P1 mouth 20, P2 mouth 26, K1 mouth 23, K2 mouth 25 communicate with valve pocket 18; Unloading throttling valve pocket 17 is had in valve pocket 7, in unloading throttling valve pocket 17, throttling valve core 15, throttling spring 16, throttling screw plug 14 are installed, throttling spring 16 one end is against on the step of throttling valve core 15, the other end withstands throttling screw plug 14, throttling valve core 15 has throttle hole 29; Nonreturn valve core 11, little valve seat 9, small valve core 10 and swivel nut 12 form nonreturn valve core assembly, and place little valve seat 9 and swivel nut 12 in nonreturn valve core 11, small valve core 10 inserts swivel nut 12, little valve seat 9 and nonreturn valve core 11; Little spring 13, nonreturn valve core assembly, large valve seat 8 is put in valve pocket 7, embed guide pin bushing 6, throttling valve core 15 is withstood in little spring 13 one end, the other end withstands nonreturn valve core assembly, and nonreturn valve core assembly and large valve seat 8 conical surface seal firmly, has seal groove 21 and the damping hole 22 of anti-uninstall impact in guide pin bushing 6; Place large push rod 3 and big spring 4 in joint 2, valve pocket 7 and joint 2 form core assembly by trip bolt 5, and big spring 4 one end is against on the step of large push rod 3, the other end withstands guide pin bushing 6; Have the inner chamber of K3 mouth 24, K3 mouth 24 and large push rod 3 in joint 2, K1 mouth 23, K2 mouth 25 communicate; Core assembly integrally plug connector loads valve pocket 18.
Claims (1)
1. hydraulic control one-way valve is impacted in one kind low unloading, it comprises valve body (1), core assembly, it is characterized in that: have a valve pocket (18), A1 mouth (19), A2 mouth (27), A3 mouth (28), P1 mouth (20), P2 mouth (26), K1 mouth (23), K2 mouth (25) in valve body (1), A1 mouth (19), A2 mouth (27), A3 mouth (28), P1 mouth (20), P2 mouth (26), K1 mouth (23), K2 mouth (25) communicate with valve pocket (18); Unloading throttling valve pocket (17) is had in valve pocket (7), in unloading throttling valve pocket (17), throttling valve core (15), throttling spring (16), throttling screw plug (14) are installed, throttling spring (16) one end is against on the step of throttling valve core (15), the other end withstands throttling screw plug (14), throttling valve core (15) has throttle hole (29); Nonreturn valve core (11), little valve seat (9), small valve core (10) and swivel nut (12) composition nonreturn valve core assembly, place little valve seat (9) and swivel nut (12) in nonreturn valve core (11), small valve core (10) inserts swivel nut (12), little valve seat (9) and nonreturn valve core (11); Little spring (13), nonreturn valve core assembly, large valve seat (8) is put in valve pocket (7), embed guide pin bushing (6), throttling valve core (15) is withstood in little spring (13) one end, the other end withstands nonreturn valve core assembly, nonreturn valve core assembly and large valve seat (8) conical surface seal firmly, have seal groove (21) and the damping hole (22) of anti-uninstall impact in guide pin bushing (6); Large push rod (3) and big spring (4) is placed in joint (2), valve pocket (7) and joint (2) form core assembly by trip bolt (5), and big spring (4) one end is against on the step of large push rod (3), the other end withstands guide pin bushing (6); Have K3 mouth (24) in joint (2), the inner chamber of K3 mouth (24) and large push rod (3), K1 mouth (23), K2 mouth (25) communicate; Core assembly integrally plug connector loads valve pocket (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520034932.8U CN204419223U (en) | 2015-01-13 | 2015-01-13 | Hydraulic control one-way valve is impacted in a kind of low unloading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520034932.8U CN204419223U (en) | 2015-01-13 | 2015-01-13 | Hydraulic control one-way valve is impacted in a kind of low unloading |
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| Publication Number | Publication Date |
|---|---|
| CN204419223U true CN204419223U (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520034932.8U Active CN204419223U (en) | 2015-01-13 | 2015-01-13 | Hydraulic control one-way valve is impacted in a kind of low unloading |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021037249A1 (en) * | 2019-08-29 | 2021-03-04 | 北京天地玛珂电液控制系统有限公司 | Hydraulic control one-way valve |
| CN113090296A (en) * | 2021-05-14 | 2021-07-09 | 丰隆高科液压股份有限公司 | Large-drift-diameter hydraulic control one-way valve |
-
2015
- 2015-01-13 CN CN201520034932.8U patent/CN204419223U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021037249A1 (en) * | 2019-08-29 | 2021-03-04 | 北京天地玛珂电液控制系统有限公司 | Hydraulic control one-way valve |
| CN113090296A (en) * | 2021-05-14 | 2021-07-09 | 丰隆高科液压股份有限公司 | Large-drift-diameter hydraulic control one-way valve |
| CN113090296B (en) * | 2021-05-14 | 2022-02-08 | 丰隆高科液压股份有限公司 | Large-drift-diameter hydraulic control one-way valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: FENGLONG HIGH-TECH HYDRAULIC CO., LTD. Free format text: FORMER NAME: FENGLONG HYDRAULIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Nineteen Yueqing Economic Development Zone, Zhejiang, Wei Road, 325600 Patentee after: Hydraulic Limited by Share Ltd Address before: Nineteen Yueqing Economic Development Zone, Zhejiang, Wei Road, 325600 Patentee before: Fenglong Hydraulic Co., Ltd. |