CN102536275A - Manual reversing main operation valve for hydraulic support of thin seam - Google Patents
Manual reversing main operation valve for hydraulic support of thin seam Download PDFInfo
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- CN102536275A CN102536275A CN2012100091887A CN201210009188A CN102536275A CN 102536275 A CN102536275 A CN 102536275A CN 2012100091887 A CN2012100091887 A CN 2012100091887A CN 201210009188 A CN201210009188 A CN 201210009188A CN 102536275 A CN102536275 A CN 102536275A
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- valve
- hydraulic support
- control valve
- master control
- coal seam
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Abstract
The invention discloses a manual reversing main operation valve for a hydraulic support of a thin seam. The manual reversing main operation valve comprises two double-position three-way valves which are same in structure. Each double-position three-way valve comprises a valve body, and a valve core assembly is arranged in the valve body. Each valve core assembly comprises a valve base, a middle guide sleeve and a screw sleeve which are mounted in sequence. A spring, a spring base and a liquid inlet sealing ball are internally arranged in each valve base. A liquid returning sealing ball and an ejector rod are arranged inside each screw sleeve. A limiting rod is arranged inside a core hole of each middle guide sleeve. Each liquid inlet sealing ball and each liquid returning sealing ball are respectively abutted against the both ends of each limiting rod. Operation mechanisms are respectively arranged at the extending ends of the ejector rods of the two double-position three-way valves which are same in structure. The manual reversing main operation valve disclosed by the invention can be used as a main operation valve of the hydraulic support of the thin seam, and further has the advantages of small occupied space, good sealing property, long service life, high reliability and simplicity in operation.
Description
Technical field
The present invention relates under a kind of coal mine the hydraulic prop Equipment Control and use valve, relate in particular to a kind of hydraulic support for low coal seam with manual reverse of direction master control valve.
Background technology
Along with the continuous exploitation of colliery resource, the exploitation of girdle has become global problem.The girdle mining height is low, and personnel creep in work plane, and working space is little, and hydraulic support is limited by bulk, and support master control valve originally takes up space bigger; And when keeping in repair in the down-hole, narrow space is unfavorable for dismounting, and the dismounting back is installed to compress also and do not ensured.
In the prior art, the plug-in manual operation valve of use occupies very large space, when being applied to Bracket in Thin Coal Seam, how to arrange in the narrow space that hydraulic system becomes a great problem, even can occur not having the space to place the problem of main control valve; And feed liquor sealing valve port form is that the spacing middle cover of metal material is secondary with the flat seal of the feed liquor sealing mat composition of soft sealing material; Application life short, easy to wear, bad mechanical property; Under the little condition in girdle space, should improve application life, reduce maintenance frequency.
Summary of the invention
The purpose of this invention is to provide a kind of take up room little, good seal, long service life, reliability is high, hydraulic support for low coal seam simple to operate is with manual reverse of direction master control valve.
The objective of the invention is to realize through following technical scheme:
Hydraulic support for low coal seam of the present invention comprises two two position three-way valves that structure is identical with manual reverse of direction master control valve, and said two position three-way valve comprises valve body, is provided with core assembly in the said valve body;
Said core assembly comprises valve seat, middle guide pin bushing and the swivel nut that order is installed; Be provided with spring, spring base and feed liquor ball sealer in the said valve seat; Be provided with back liquid sealing ball and push rod in the said swivel nut; Be provided with gag lever post in the core hole of guide pin bushing in the middle of said, said feed liquor ball sealer and said time liquid sealing ball are against the two ends of said gag lever post respectively;
Said two identical two position three-way valves of structure are provided with operating mechanism at the external part of its push rod.
Technical scheme by the invention described above provides can find out that hydraulic support for low coal seam provided by the invention is with manual reverse of direction master control valve, owing to comprise two two position three-way valves that structure is identical, two position three-way valve comprises valve body, is provided with core assembly in the valve body; Core assembly comprises valve seat, middle guide pin bushing and the swivel nut that order is installed; Be provided with spring, spring base and feed liquor ball sealer in the valve seat; Be provided with back liquid sealing ball and push rod in the swivel nut, be provided with gag lever post in the core hole of middle guide pin bushing, feed liquor ball sealer and time liquid sealing ball are against the two ends of gag lever post respectively; Two identical two position three-way valves of structure are provided with operating mechanism at the external part of its push rod.Can be as the main control valve of hydraulic support for low coal seam, little, the good seal of taking up room, long service life, reliability are high, simple to operate.
Description of drawings
The hydraulic support for low coal seam that Fig. 1 provides for the embodiment of the invention is with the structural representation of manual reverse of direction master control valve.
Among the figure: 10,11,12,13,16 is seal.
The specific embodiment
To combine accompanying drawing that the embodiment of the invention is done to describe in detail further below.
Hydraulic support for low coal seam of the present invention is with manual reverse of direction master control valve, and its preferable specific embodiment is as shown in Figure 1:
Comprise two two position three-way valves that structure is identical, said two position three-way valve comprises valve body 3, is provided with core assembly in the said valve body 3;
Said core assembly comprises valve seat 8, middle guide pin bushing 5 and the swivel nut 4 that order is installed; Be provided with spring 9, spring base 7 and feed liquor ball sealer 14-1 in the said valve seat 8; Be provided with back liquid sealing ball 14-2 and push rod 2 in the said swivel nut 4; Be provided with gag lever post 6 in the core hole of guide pin bushing 5 in the middle of said, said feed liquor ball sealer 14-1 and said time liquid sealing ball 14-2 are against the two ends of said gag lever post 6 respectively;
Said two identical two position three-way valves of structure are provided with operating mechanism 1 at the external part of its push rod 2.
Said swivel nut 4 has been opened an inlet opening 17 at the position that cooperates with said push rod 2, and this inlet opening 17 communicates with admission chamber.
Said two two position three-way valves and operating mechanism 1 thereof link together through screw 15 and fluid proportion plate.
Said valve seat 8, spring 9, spring base 7, feed liquor ball sealer 14-1, the material that returns liquid sealing ball 14-2, middle guide pin bushing 5 and push rod 2 are the highly corrosion resistant high-strength stainless steel, and the material of said swivel nut 4 is a copper.
The material of said gag lever post 6 is a roller needle bearing steel.
Be to seal firmly between guide pin bushing 5 and said feed liquor ball sealer 14-1 and the said time liquid sealing ball 14-2 in the middle of said.
Hydraulic support for low coal seam of the present invention is with manual reverse of direction master control valve, and little, the good seal of taking up room, long service life, reliability are high, simple to operate.
Specific embodiment:
Referring to Fig. 1, comprise the identical two position three-way valve of two structures and operating mechanism 1 and fluid proportion plate again; Said two position three-way valve comprises core assembly and valve body 3; Said core assembly comprises valve seat 8, spring 9, spring base 7, feed liquor ball sealer 14-1 and returns liquid sealing ball 14-2, middle guide pin bushing 5, gag lever post 6, push rod 2, swivel nut 4 etc.; Said two position three-way valve group links together operating mechanism 1 and fluid proportion plate through 2 M8 screws 15, constitutes manual reverse of direction operation valve.Feed liquor ball sealer 14-1 and time liquid sealing ball 14-2 adopt the close tolerance seal ball, have both reduced difficulty of processing, can guarantee that again the high accuracy of valve ball and middle valve pocket cooperates requirement, have also improved application life, have improved reliability; Structural member of the present invention is except that swivel nut 4 usefulness copper simultaneously, and all the other all adopt the highly corrosion resistant high-strength stainless steel, satisfy the safety of coal mines standard, adapts to the abominable media environment in down-hole; Operational torque of the present invention reduces simultaneously, has opened an inlet opening in push rod 2 and swivel nut 4 cooperation places and has communicated with admission chamber, makes operation easier.Said gag lever post 6 is roller needle bearing steel, and is not flexible; It in the middle of said hard sealing.
The operating principle of specific embodiment is:
This two position three way directional control valve comprises two close tolerance seal balls, and middle guide pin bushing 5 adopts the hard stainless steel material.When being in original state, guide pin bushing 5 cut out in the middle of feed liquor ball sealer 14-1 made under the effect of spring 9, and working chamber and time sap cavity are communicated.When manipulation mechanism 1, push rod 2 stressed liquid sealing ball 14-2 and the middle guide pin bushings of making back seal, and transmit force compresses spring 9 through gag lever post, and admission chamber and working chamber are communicated, and have cut off working chamber simultaneously and have returned sap cavity.When operation stopped, because spring 9 active forces are big, valve automatically reset, and guide pin bushing 5 in the middle of feed liquor ball sealer 14-1 closes returns liquid sealing ball 14-2 and opens middle guide pin bushing 5.
The beneficial effect that specific embodiment brings is:
It is little to take up room; The original main control valve 135cm * 118cm * 43cm of the size compared of 54cm * 48cm * 32cm has nearly dwindled 2/3rds, makes the hydraulic support designer design support and arranges that hydraulic system need not consider the problem of putting of main control valve basically again; This manual reverse of direction control valve is convenient to dismounting and maintenance; Operational torque is little, makes operation more simply laborsaving; Adopt the close tolerance seal ball to seal firmly, make processing technology simple, the better and long service life of sealing performance.
The above; Be merely the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (6)
1. a hydraulic support for low coal seam is characterized in that with manual reverse of direction master control valve, comprises two two position three-way valves that structure is identical, and said two position three-way valve comprises valve body (3), and said valve body is provided with core assembly in (3);
Said core assembly comprises valve seat (8), middle guide pin bushing (5) and the swivel nut (4) that order is installed; Be provided with spring (9), spring base (7) and feed liquor ball sealer (14-1) in the said valve seat (8); Be provided with back liquid sealing ball (14-2) and push rod (2) in the said swivel nut (4); Be provided with gag lever post (6) in the core hole of guide pin bushing (5) in the middle of said, said feed liquor ball sealer (14-1) and said time liquid sealing ball (14-2) are against the two ends of said gag lever post (6) respectively;
Said two identical two position three-way valves of structure are provided with operating mechanism (1) at the external part of its push rod (2).
2. hydraulic support for low coal seam according to claim 1 is characterized in that with manual reverse of direction master control valve said swivel nut (4) has been opened an inlet opening (17) at the position that cooperates with said push rod (2), and this inlet opening (17) communicates with admission chamber.
3. hydraulic support for low coal seam according to claim 2 is characterized in that with manual reverse of direction master control valve said two two position three-way valves and operating mechanism (1) thereof link together through screw (15) and fluid proportion plate.
According to claim 1,2 or 3 described hydraulic support for low coal seam with manual reverse of direction master control valve; It is characterized in that; The material of said valve seat (8), spring (9), spring base (7), feed liquor ball sealer (14-1), time liquid sealing ball (14-2), middle guide pin bushing (5) and push rod (2) is the highly corrosion resistant high-strength stainless steel, and the material of said swivel nut (4) is a copper.
5. hydraulic support for low coal seam according to claim 4 is characterized in that with manual reverse of direction master control valve the material of said gag lever post (6) is a roller needle bearing steel.
6. hydraulic support for low coal seam according to claim 4 is characterized in that with manual reverse of direction master control valve, is hard sealing between said middle guide pin bushing (5) and said feed liquor ball sealer (14-1) and the said time liquid sealing ball (14-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210009188.7A CN102536275B (en) | 2012-01-12 | 2012-01-12 | Manual reversing main operation valve for hydraulic support of thin seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210009188.7A CN102536275B (en) | 2012-01-12 | 2012-01-12 | Manual reversing main operation valve for hydraulic support of thin seam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102536275A true CN102536275A (en) | 2012-07-04 |
| CN102536275B CN102536275B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210009188.7A Active CN102536275B (en) | 2012-01-12 | 2012-01-12 | Manual reversing main operation valve for hydraulic support of thin seam |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2266042Y (en) * | 1996-02-28 | 1997-10-29 | 瑞安南方煤矿机械厂 | Hydraulic chock running valve |
| US6073654A (en) * | 1998-03-28 | 2000-06-13 | Dbt Deutsche Bergbau-Technik Gmbh | Hydraulically trippable check valve for underground mine support hydraulics |
| RU2190766C2 (en) * | 2000-12-26 | 2002-10-10 | Открытое акционерное общество "Кран-Узловский машиностроительный завод им. И.И.Федунца" | Hydraulic distributor of powered mine support |
| CN200943503Y (en) * | 2006-06-02 | 2007-09-05 | 姜风 | Change-over valve with liquid return opening possessing one-way flow function |
| CN201521308U (en) * | 2009-10-22 | 2010-07-07 | 郑州煤机液压电控有限公司 | High flow capacity insertion type manual direction-changing valve for hydraulic supporting frame |
| CN201982119U (en) * | 2010-12-13 | 2011-09-21 | 中国航天科技集团公司烽火机械厂 | Static pressure balanced electromagnetic pilot valve |
| CN202417539U (en) * | 2012-01-12 | 2012-09-05 | 中煤北京煤矿机械有限责任公司 | Hand reversing main control valve for thin seam hydraulic support |
-
2012
- 2012-01-12 CN CN201210009188.7A patent/CN102536275B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2266042Y (en) * | 1996-02-28 | 1997-10-29 | 瑞安南方煤矿机械厂 | Hydraulic chock running valve |
| US6073654A (en) * | 1998-03-28 | 2000-06-13 | Dbt Deutsche Bergbau-Technik Gmbh | Hydraulically trippable check valve for underground mine support hydraulics |
| RU2190766C2 (en) * | 2000-12-26 | 2002-10-10 | Открытое акционерное общество "Кран-Узловский машиностроительный завод им. И.И.Федунца" | Hydraulic distributor of powered mine support |
| CN200943503Y (en) * | 2006-06-02 | 2007-09-05 | 姜风 | Change-over valve with liquid return opening possessing one-way flow function |
| CN201521308U (en) * | 2009-10-22 | 2010-07-07 | 郑州煤机液压电控有限公司 | High flow capacity insertion type manual direction-changing valve for hydraulic supporting frame |
| CN201982119U (en) * | 2010-12-13 | 2011-09-21 | 中国航天科技集团公司烽火机械厂 | Static pressure balanced electromagnetic pilot valve |
| CN202417539U (en) * | 2012-01-12 | 2012-09-05 | 中煤北京煤矿机械有限责任公司 | Hand reversing main control valve for thin seam hydraulic support |
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| CN102536275B (en) | 2014-04-02 |
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