CN203500559U - Small-flow reversing valve - Google Patents
Small-flow reversing valve Download PDFInfo
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- CN203500559U CN203500559U CN201320604471.4U CN201320604471U CN203500559U CN 203500559 U CN203500559 U CN 203500559U CN 201320604471 U CN201320604471 U CN 201320604471U CN 203500559 U CN203500559 U CN 203500559U
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- valve
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- valve pocket
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- depression bar
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Abstract
The utility model discloses a small-flow reversing valve which comprises a valve body and two valve element components. Each valve element component comprises a pressing rod, a liquid returning valve sleeve, a liquid inlet valve sleeve and a valve element. The liquid returning valve sleeves are arranged on the pressing rods in a sleeved mode. The two ends of each valve element are provided with openings, and the inner portion of each valve element is hollow. Each valve element component further comprises a middle valve sleeve which is connected between the corresponding liquid returning valve sleeve and the corresponding liquid inlet valve sleeve in the axial direction. The middle valve sleeves and the liquid inlet sleeves are arranged on the valve elements in a sleeved mode. Through holes for liquid to flow through are formed in the side walls of the middle valve sleeves, the liquid inlet valve sleeves and the valve elements. Compared with the prior art, the middle valve sleeves are added on the valve element components of the reversing valve, the two ends of each middle valve sleeve are fixedly connected with the corresponding liquid inlet valve sleeve and the corresponding liquid returning valve sleeve, the pressing rods and the valve elements are placed in the valve sleeves so that the valve element components can form an integral inserting type structure, the integration degree is high, mounting and disassembling in the valve body of the reversing valve are convenient, and accordingly the integration degree of the reversing valve is improved.
Description
Technical field
The utility model relates to the hydraulic element in coal mine fully-mechanized mining hydraulic support oil hydraulic circuit, and specifically, the utility model relates to a kind of small flow selector valve.
Background technique
At coal mine fully-mechanized mining more and more under the overall situation of automation, high efficiency development, large mining height, the support of HR high resistance is more and more universal, corresponding control valve also start from before small flow gradually develop into present flow, large flow.At coal machine profession, selector valve is also referred to as control valve or control valve.In hydraulic pressure system of hydraulic support, selector valve is controlled the direction of liquid stream, the different action such as realize hydraulic support lifting, pushing and sliding, try to stop people from fighting each other.
At present, small flow selector valve comprises valve body and mangetic core assembly, valve body is provided with a main inlet opening, a main hole for back flow and two working holes, and main inlet opening and main hole for back flow are located on the same side of valve body, and two working holes are located at respectively on two other relative side of valve body.Mangetic core assembly comprises depression bar, liquid return valve jacket, feed liquor valve pocket and spool, and the both ends open of spool, inside are hollow oil duct, adopts valve pad sealing between spool and depression bar.Along with colliery usage requirement is more and more towards integrated and automation direction development, to the reliability of hydraulic element and working life, require also more and more higher, such mangetic core assembly is more complicated structurally, part kind is many, and level of integration is low, and maintenance of valve gets up also very inconvenient, and sealing reliability is poor, valve pad is easy to destroyed, causes the working life of valve and accommodative ability of environment not enough, finally can affect the stable operation of comprehensive mining hydraulic bracket.
Model utility content
Technical problem to be solved in the utility model is to provide the small flow selector valve that a kind of level of integration is high.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of small flow selector valve, comprise valve body and two mangetic core assemblies, valve body is provided with a main inlet opening, a main hole for back flow and two working holes, main inlet opening and main hole for back flow are located on the same side of valve body, two working holes are located at respectively on two other relative side of valve body, mangetic core assembly comprises depression bar, liquid return valve jacket, feed liquor valve pocket and spool, liquid return valve jacket is enclosed within on depression bar, the both ends open of spool, inside is hollow oil duct, spool and depression bar are for being tightly connected, mangetic core assembly also comprises the middle valve pocket being connected to vertically between described liquid return valve jacket and feed liquor valve pocket, middle valve pocket and feed liquor valve pocket are enclosed within on described spool, middle valve pocket, on the sidewall of feed liquor valve pocket and spool, be equipped with the through hole that allows liquid flow through, the through hole that described main inlet opening puts with liquid feed valve is communicated with, the through hole that described working hole puts with intervening valve is communicated with.
In the middle of described, the two ends of valve pocket are connected with liquid feed valve thread die cutting with described liquid return valve jacket respectively.
Between described depression bar and the end of described spool for being firmly tightly connected.
The end towards described depression bar of described spool is frustum structure, and the endoporus ingress of depression bar is provided with the arc surface for being connected with spool end part seal and contact for line between the two.
The outer side wall of described spool is provided with the ring piece of protrusion, and the outer side surface of ring piece is provided with conical surface, and the madial wall of described middle valve pocket is provided with bump, and bump is provided with for the conical surface arc surface that be tightly connected and that contact for line between the two with ring piece.
Through hole on described spool is between described ring piece and the end of frustum structure.
The through hole that described intervening valve puts is between described bump and the end that is connected with described liquid return valve jacket.
The utility model adopts technique scheme, compared with prior art, the mangetic core assembly of this selector valve is by valve pocket in the middle of increasing by, the two ends of middle valve pocket are fixedly connected with liquid return valve jacket with feed liquor valve pocket, depression bar and spool are positioned at the inside of valve pocket, thereby make mangetic core assembly can form a whole plug-in type structure, and level of integration is high, facilitate the installation and removal in change valve, thereby also improved the level of integration of selector valve.
Accompanying drawing explanation
Fig. 1 is the sectional view of selector valve of the present utility model;
Fig. 2 is the sectional view of mangetic core assembly;
Fig. 3 is the enlarged view at A place in Fig. 2;
Fig. 4 is the enlarged view at B place in Fig. 2;
Mark in above-mentioned figure is: 1, depression bar; 2, liquid return valve jacket; 3, middle valve pocket; 4, feed liquor valve pocket; 5, spool; 6, spring; 7, the first liquid outlet opening; 8, the second liquid outlet opening; 9, inlet opening; 10, hole for back flow; 11, bump; 12, ring piece; 13, handle; 14, pressure head; 15, briquetting; 16, valve body; 17, feed liquor sealed department; 18, housing; 19, intermediate seal portion; 20, main inlet opening; 21, main hole for back flow.
Embodiment
Be illustrated in figure 1 a kind of small flow selector valve of the present utility model, comprise valve body 16, housing 18, handle 13, pressure head 14, two briquettings 15 and two mangetic core assemblies.Valve body 16 is rectangle, valve body 16 is provided with a main inlet opening 20, a main hole for back flow 21 and two working hole C, D, main inlet opening 20 and main hole for back flow 21 are located on the same side of valve body 16 side by side, two working hole C, D is located at respectively on two other relative side of valve body 16, two working hole C, D matches with a mangetic core assembly respectively, after valve opening, the emulsified liquid entering in valve body 16 from main inlet opening 20 passes through mangetic core assembly respectively from working hole C, D flows out, after valve closing, emulsified liquid in mangetic core assembly flows back to emulsion power pack from main hole for back flow 21.
As shown in Figure 2, the mangetic core assembly of this selector valve comprises depression bar 1, liquid return valve jacket 2, middle valve pocket 3, feed liquor valve pocket 4 and spool 5.Liquid return valve jacket 2 is enclosed within on depression bar 1, liquid return valve jacket 2 inside are provided with the endoporus matching with depression bar 1 external shape, the cross section of depression bar 1 is convex shape, and the head of depression bar 1 stretches out from the end of liquid return valve jacket 2, and the inside of depression bar 1 is provided with the endoporus that starts to extend vertically from terminal surface.The main body of spool 5 is cylindrical, and the both ends open of spool 5, inside are the hollow oil duct extending vertically, and spool 5 matches and can realize sealing with depression bar 1.One end of middle valve pocket 3 is connected with liquid return valve jacket 2, and the other end is connected with feed liquor valve pocket 4, and middle valve pocket 3 and feed liquor valve pocket 4 are all enclosed within on spool 5, and middle valve pocket 3 and feed liquor valve pocket 4 are all provided with an endoporus in inside.On the sidewall of feed liquor valve pocket 4, liquid return valve jacket 2, spool 5 and middle valve pocket 3, be equipped with the through hole that allows liquid flow through running through, be respectively inlet opening 9, hole for back flow 10, the first liquid outlet opening 7 and the second liquid outlet opening 8, main inlet opening 20 is communicated with the inlet opening 9 on feed liquor valve pocket 4, the second liquid outlet opening 8 on the middle valve pocket 3 of working hole C and upside is communicated with, the second liquid outlet opening 8 on the middle valve pocket 3 of working hole D and downside is communicated with, and hole for back flow 10 is communicated with the main hole for back flow 21 on valve body 16.
Specifically, the two ends of middle valve pocket 3 are threaded with liquid return valve jacket 2 and feed liquor valve pocket 4 respectively, and depression bar 1 and spool 5 are positioned at the inside of three valve pockets, thereby mangetic core assembly can form a whole plug-in type structure, level of integration is high, convenient installation and removal in change valve 16.
As shown in Figure 2 and Figure 4, be provided with the ring piece 12 of a protrusion on the outer side wall of spool 5 near the position at middle part, this ring piece 12 is a complete annular, coaxial with spool 5.In the outside of spool 5, also overlap and have a spring 6, this spring 6 is also positioned at feed liquor valve pocket 4, and one end of spring 6 is against on the end face of ring piece 12 of spool 5, the other end be against in feed liquor valve pocket 4 on the step surface arranging near terminal position place.The madial wall of middle valve pocket 3 is provided with an annular bump 11, the position of bump 11 the close end being connected with feed liquor valve pocket 4, and this bump 11 matches and seals with ring piece 12.Mangetic core assembly is when original state, and spring 6 promotes spool 5 and moves towards bump 11, until contact with bump 11, realizes sealing.The outer side wall of spool 5 and respectively with feed liquor valve pocket 4 and middle valve pocket 3 madial walls on the part that protrudes fit, as shown in the figure, is feed liquor sealed department 17 on feed liquor valve pocket 4 inwalls, is intermediate seal portion 19 on middle valve pocket 3 inwalls, feed liquor sealed department 17 and intermediate seal portion 19 are provided with annular groove, for the O type circle that urethane rubber is made is installed, the sealing between realization and spool 5.
On the inwall of feed liquor valve pocket 4, by the subterminal feed liquor sealed department 17 that protrusion is set, the end of spring 6 is against on the interior edge face of this feed liquor sealed department 17.Along feed liquor valve pocket 4 axially, inlet opening 9 at feed liquor sealed department 17 with for the end being connected with middle valve pocket 3 between, an admission chamber of inside formation of feed liquor valve pocket 4, inlet opening 9 is communicated with this admission chamber, emulsified liquid enters admission chamber from this inlet opening 9.Along middle valve pocket 3 axially, the second liquid outlet opening 8 is between intermediate seal portion 19 and bump 11, the inside of middle valve pocket 3 also one of shape goes out sap cavity, the second liquid outlet opening 8 goes out sap cavity with this and is communicated with.Along spool 5 axially, the first liquid outlet opening 7 ring piece 12 and spool 5 between the end of depression bar 1, mangetic core assembly is when original state, in the middle of the first liquid outlet opening 7 is arranged in, valve pocket 3 goes out sap cavity.The position of the hole for back flow 10 on liquid return valve jacket 2 is near the end of middle valve pocket 3, and hole for back flow 10 is communicated with the back to the fluid chamber of the inside of liquid return valve jacket 2.
Under original state as depicted in figs. 1 and 2, valve closing, sealing between spool 5 and middle valve pocket 3, the admission chamber of feed liquor valve pocket 4 is not communicated with going out between sap cavity of middle valve pocket 3, and oil circuit is obstructed; When needs Open valve, towards the working hole direction that needs emulsified liquid to flow out, pull handle 13, depression bar 1 promotes spool 5 and moves under the effect of briquetting 15, the ring piece 12 of spool 5 is separated with the bump 11 of middle valve pocket 3, the admission chamber of feed liquor valve pocket 4 is communicated with the sap cavity that goes out of middle valve pocket 3, emulsified liquid can enter out sap cavity, and due to now sealing between spool 5 and depression bar 1, the emulsified liquid in back to the fluid chamber just can flow into through the second liquid outlet on middle valve pocket 3 working hole C or the D of valve body 16.After throttle down, the emulsified liquid going out in sap cavity flows back to emulsion power pack through the hole for back flow 10 on liquid return valve jacket 2, the main hole for back flow 21 of valve body 16.
The sealing configuration that mangetic core assembly adopts above-mentioned single cone endoporus cambered surface and single cone periphery to form, seal form is hard sealing, also be loop line sealing, with respect to the sealing of softwood matter, firmly seal not only good seal performance, also ability ultrahigh pressure, can effectively extend the working life of sealing pair, can extend the working life of mangetic core assembly, and can improve the sealing reliability of mangetic core assembly, be applied in the time between failures that can improve greatly selector valve on selector valve.
Because single sealing configuration of boring endoporus cambered surface can form large obtuse angle, can greatly improve loop line non-deformability.And, the end of spool 5 and depression bar 1 also needs to process through vacuum hardening, require Rockwell hardness between HRC60～80, and grind with high-precision grinder, after these are processed, can make bearing capacity, stain resistance and the antiwear property of bipyramid endoporus cambered surface sealing configuration be improved, can effectively extend the working life of sealing pair.
This selector valve is of a size of 287*140*43mm, and nominal flow rate is 125L/min, and nominal pressure is 31.5MPa.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or without improving, design of the present utility model and technological scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (7)
1. a small flow selector valve, comprise valve body and two mangetic core assemblies, valve body is provided with a main inlet opening, a main hole for back flow and two working holes, main inlet opening and main hole for back flow are located on the same side of valve body, two working holes are located at respectively on two other relative side of valve body, mangetic core assembly comprises depression bar, liquid return valve jacket, feed liquor valve pocket and spool, liquid return valve jacket is enclosed within on depression bar, the both ends open of spool, inside is hollow oil duct, spool and depression bar are for being tightly connected, it is characterized in that: described mangetic core assembly also comprises the middle valve pocket being connected to vertically between described liquid return valve jacket and feed liquor valve pocket, middle valve pocket and feed liquor valve pocket are enclosed within on described spool, middle valve pocket, on the sidewall of feed liquor valve pocket and spool, be equipped with the through hole that allows liquid flow through, the through hole that described main inlet opening puts with liquid feed valve is communicated with, the through hole that described working hole puts with intervening valve is communicated with.
2. small flow selector valve according to claim 1, is characterized in that: in the middle of described, the two ends of valve pocket are connected with liquid feed valve thread die cutting with described liquid return valve jacket respectively.
3. small flow selector valve according to claim 1 and 2, is characterized in that: between described depression bar and the end of described spool for being firmly tightly connected.
4. small flow selector valve according to claim 3, is characterized in that: the end towards described depression bar of described spool is frustum structure, and the endoporus ingress of depression bar is provided with the arc surface for being connected with spool end part seal and contact for line between the two.
5. small flow selector valve according to claim 4, it is characterized in that: the outer side wall of described spool is provided with the ring piece of protrusion, the outer side surface of ring piece is provided with conical surface, in the middle of described, the madial wall of valve pocket is provided with bump, and bump is provided with for the conical surface arc surface that be tightly connected and that contact for line between the two with ring piece.
6. small flow selector valve according to claim 5, is characterized in that: the through hole on described spool is between described ring piece and the end of frustum structure.
7. small flow selector valve according to claim 6, is characterized in that: the through hole that described intervening valve puts is between described bump and the end that is connected with described liquid return valve jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604471.4U CN203500559U (en) | 2013-09-27 | 2013-09-27 | Small-flow reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604471.4U CN203500559U (en) | 2013-09-27 | 2013-09-27 | Small-flow reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500559U true CN203500559U (en) | 2014-03-26 |
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ID=50331539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320604471.4U Expired - Fee Related CN203500559U (en) | 2013-09-27 | 2013-09-27 | Small-flow reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500559U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948209A (en) * | 2015-06-29 | 2015-09-30 | 平顶山市申联机械制造有限公司 | Automatic pressure supplementing integral plug-in mounting hand-operated direction valve |
| CN106194232A (en) * | 2016-08-30 | 2016-12-07 | 山西平阳广日机电有限公司 | A kind of hand-operated valve core assembly |
| CN107524819A (en) * | 2017-08-28 | 2017-12-29 | 宁波长壁流体动力科技有限公司 | A kind of core assembly |
-
2013
- 2013-09-27 CN CN201320604471.4U patent/CN203500559U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948209A (en) * | 2015-06-29 | 2015-09-30 | 平顶山市申联机械制造有限公司 | Automatic pressure supplementing integral plug-in mounting hand-operated direction valve |
| CN104948209B (en) * | 2015-06-29 | 2017-10-27 | 平顶山市申联机械制造有限公司 | A kind of integral plugged formula hand-operated direction valve of automatic compensation |
| CN106194232A (en) * | 2016-08-30 | 2016-12-07 | 山西平阳广日机电有限公司 | A kind of hand-operated valve core assembly |
| CN107524819A (en) * | 2017-08-28 | 2017-12-29 | 宁波长壁流体动力科技有限公司 | A kind of core assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20140326 Termination date: 20160927 |