CN203476359U - Novel small-flow reversing valve - Google Patents
Novel small-flow reversing valve Download PDFInfo
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- CN203476359U CN203476359U CN201320605187.9U CN201320605187U CN203476359U CN 203476359 U CN203476359 U CN 203476359U CN 201320605187 U CN201320605187 U CN 201320605187U CN 203476359 U CN203476359 U CN 203476359U
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Abstract
The utility model discloses a novel small-flow reversing valve. The novel small-flow reversing valve comprises a valve body and two valve element assemblies. Each valve element assembly comprises a pressing rod, a liquid return valve sleeve, a liquid inlet valve sleeve and a valve element, wherein the pressing rods are sleeved with the liquid return valve sleeves, the two ends of the valve elements are open, hollow oil ducts are formed in the valve elements, and the valve elements are in sealing connection with the pressing rods. The valve element assemblies further comprise intermediate valve sleeves which are axially connected between the liquid return valve sleeves and the liquid inlet valve sleeves, the valve elements are sleeved with the intermediate valve sleeves and the liquid inlet valve sleeves, and the side wall of each intermediate valve sleeve, the side wall of each liquid inlet valve sleeve and the side wall of each valve element are respectively provided with a through hole for allowing liquid to flow through. Compared with the prior art, the intermediate valve sleeves are additionally arranged on the valve element assemblies of the reversing valve, the two ends of the intermediate valve sleeves are fixedly connected with the liquid inlet valve sleeves and the liquid return valve sleeves, the pressing rods and the valve elements are located inside the valve sleeves, and then the valve element assemblies can form an integrated insertion type structure, the integration level is high, the valve element assemblies are conveniently mounted and demounted in the valve body of the reversing valve, and therefore the integration level of the reversing valve is improved.
Description
Technical field
The utility model relates to the Hydraulic Elements in coal mine fully-mechanized mining hydraulic support hydraulic circuit, and specifically, the utility model relates to a kind of small flow reversal valve.
Background technology
At coal mine fully-mechanized mining more and more under the overall situation of automation, high efficiency development, large mining height, the support of high impedance is more and more universal, corresponding control valve also start from before low discharge gradually develop into present flow, large flow.At coal machine profession, reversal valve is also referred to as control valve or control valve.In hydraulic pressure system of hydraulic support, reversal 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, low discharge reversal valve comprises valve body and 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.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 instructions for use is more and more towards integrated and automation direction development, to the reliability of Hydraulic Elements and application life, require also more and more higher, such core assembly is more complicated structurally, part kind is many, and integrated level is low, and maintenance of valve gets up also very inconvenient, and sealing reliability is poor, valve pad is easy to destroyed, causes the application life of valve and accommodative ability of environment not enough, finally can affect the steady operation of comprehensive mining hydraulic bracket.
Utility model content
Technical problem to be solved in the utility model is to provide the small flow reversal valve that a kind of integrated level is high.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of small flow reversal valve, comprise valve body and two 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 on an end face of valve body, 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, 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, described working hole is communicated with the inside oil duct of spool.
In the middle of described, the two ends of valve pocket are connected with liquid feed valve external threading 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 entrance 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 lateral wall of described spool is provided with the ring piece of protrusion, and the lateral surface of ring piece is provided with taper seat, and the inside wall of described middle valve pocket is provided with protuberance, and protuberance is provided with for the taper seat 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 intermediate valve puts is between described protuberance and the end that is connected with described liquid return valve jacket.
The utility model adopts technique scheme, compared with prior art, the core assembly of this reversal 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 core assembly can form a whole plug-in structure, and integrated level is high, facilitate the installation and removal in change valve, thereby also improved the integrated level of reversal valve.
Accompanying drawing explanation
Fig. 1 is the sectional view of reversal valve of the present utility model;
Fig. 2 is the sectional view of core assembly;
Fig. 3 is the enlarged drawing at A place in Fig. 2;
Fig. 4 is the enlarged drawing 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 fluid hole; 8, the second fluid hole; 9, inlet opening; 10, hole for back flow; 11, protuberance; 12, ring piece; 13, handle; 14, pressure head; 15, briquetting; 16, valve body; 17, feed liquor sealing; 18, housing; 19, intermediate seal portion; 20, main inlet opening; 21, main hole for back flow.
The specific embodiment
Be illustrated in figure 1 a kind of low discharge reversal valve of the present utility model, comprise valve body 16, housing 18, handle 13, pressure head 14, two briquettings 15 and two 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 E, F, 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 E, F is located on the end face relative with handle 13 positions of valve body 16 side by side, two working hole E, F matches with a core assembly respectively, after valve opening, the emulsion entering in valve body 16 from main inlet opening 20 passes through core assembly respectively from working hole E, F flows out, after valve closing, emulsion in core assembly flows back to emulsion power pack from main hole for back flow 21.
As shown in Figure 2, the core assembly of this reversal 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 outer 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 fluid hole 7 and the second fluid hole 8, main inlet opening 20 is communicated with the inlet opening 9 on feed liquor valve pocket 4, working hole E is communicated with the inner oil duct of spool 5 of upside core assembly, working hole F is communicated with the inner oil duct of spool 5 of downside core assembly, 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 core assembly can form a whole plug-in structure, integrated level 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 lateral 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 inside wall of middle valve pocket 3 is provided with an annular protuberance 11, the position of protuberance 11 the close end being connected with feed liquor valve pocket 4, and this protuberance 11 matches and seals with ring piece 12.Core assembly is when original state, and spring 6 promotes spool 5 and moves towards protuberance 11, until contact with protuberance 11, realizes sealing.The lateral wall of spool 5 and respectively with feed liquor valve pocket 4 and middle valve pocket 3 inside walls on the part that protrudes fit, as shown in the figure, is feed liquor sealing 17 on feed liquor valve pocket 4 inwalls, is intermediate seal portion 19 on middle valve pocket 3 inwalls, feed liquor sealing 17 and intermediate seal portion 19 are provided with annular groove, for the O type circle that polyurethane 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 sealing 17 that protrusion is set, the end of spring 6 is against on the inner face of this feed liquor sealing 17.Along feed liquor valve pocket 4 axially, inlet opening 9 at feed liquor sealing 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, emulsion enters admission chamber from this inlet opening 9.Along middle valve pocket 3 axially, the second fluid hole 8 is between intermediate seal portion 19 and protuberance 11, the inside of middle valve pocket 3 also one of shape goes out sap cavity, the second fluid hole 8 goes out sap cavity with this and is communicated with.Along spool 5 axially, the first fluid hole 7 ring piece 12 and spool 5 between the end of depression bar 1, core assembly is when original state, in the middle of the first fluid hole 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 emulsion 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 protuberance 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, emulsion can enter out sap cavity, and then the first fluid hole 7 from spool 5 enters the inner oil duct of spool 5, due to now sealing between spool 5 and depression bar 1, emulsion just can flow into from the inside oil duct of spool 5 working hole E or the F of valve body 16.After valve-off, the emulsion 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 hermetically-sealed construction that 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 super-pressure, can effectively extend the application life of sealing pair, can extend the application life of core assembly, and can improve the sealing reliability of core assembly, be applied in the time between failures that can improve greatly reversal valve on reversal valve.
Because single hermetically-sealed construction 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 supporting capacity, stain resistance and the antiwear property of bipyramid endoporus cambered surface hermetically-sealed construction be improved, can effectively extend the application life of sealing pair.
This reversal valve is of a size of 287*115*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 technical scheme carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (7)
1. a small flow reversal valve, comprise valve body and two 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 on an end face of valve body, 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 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, described working hole is communicated with the inside oil duct of spool.
2. small flow reversal 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 external threading with described liquid return valve jacket respectively.
3. small flow reversal 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 reversal valve according to claim 3, it is characterized in that: the end towards described depression bar of described spool is frustum structure, the endoporus entrance 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 reversal valve according to claim 4, it is characterized in that: the lateral wall of described spool is provided with the ring piece of protrusion, the lateral surface of ring piece is provided with taper seat, in the middle of described, the inside wall of valve pocket is provided with protuberance, and protuberance is provided with for the taper seat arc surface that be tightly connected and that contact for line between the two with ring piece.
6. small flow reversal 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 reversal valve according to claim 6, is characterized in that: the through hole that described intermediate valve puts is between described protuberance and the end that is connected with described liquid return valve jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320605187.9U CN203476359U (en) | 2013-09-27 | 2013-09-27 | Novel small-flow reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320605187.9U CN203476359U (en) | 2013-09-27 | 2013-09-27 | Novel small-flow reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203476359U true CN203476359U (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320605187.9U Expired - Fee Related CN203476359U (en) | 2013-09-27 | 2013-09-27 | Novel small-flow reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203476359U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315199A (en) * | 2014-09-30 | 2015-01-28 | 平原机器厂（新乡） | Two-position five-way reversing valve |
| CN107489789A (en) * | 2017-09-25 | 2017-12-19 | 鸿大智能机械有限公司 | Hard sealing low discharge reversal valve |
-
2013
- 2013-09-27 CN CN201320605187.9U patent/CN203476359U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315199A (en) * | 2014-09-30 | 2015-01-28 | 平原机器厂（新乡） | Two-position five-way reversing valve |
| CN107489789A (en) * | 2017-09-25 | 2017-12-19 | 鸿大智能机械有限公司 | Hard sealing low discharge reversal valve |
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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: 20140312 Termination date: 20160927 |