CN220302167U - High-flow stop unloading valve - Google Patents
High-flow stop unloading valve Download PDFInfo
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- CN220302167U CN220302167U CN202321467313.9U CN202321467313U CN220302167U CN 220302167 U CN220302167 U CN 220302167U CN 202321467313 U CN202321467313 U CN 202321467313U CN 220302167 U CN220302167 U CN 220302167U
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- distribution plate
- liquid distribution
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- 239000007788 liquid Substances 0.000 claims abstract description 111
- 238000009826 distribution Methods 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 230000000712 assembly Effects 0.000 claims description 11
- 238000000429 assembly Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 4
- 230000003628 erosive effect Effects 0.000 abstract description 2
- 239000008358 core component Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model discloses a high-flow stop unloading valve, which comprises a valve body assembly, a liquid distribution plate assembly, an electromagnetic pilot valve, a pilot valve protection plate and a valve core assembly, wherein the valve body assembly is connected with the valve body assembly through a valve rod; the front end of the valve body is provided with a first joint component, the rear end of the valve body is provided with a second joint component and a third joint component, and the left end of the valve body is provided with two plug components; the liquid preparation plate component comprises a liquid preparation plate, a one-way valve and a filter element component; the liquid distribution plate is arranged on the valve body, the front end of the liquid distribution plate is provided with a one-way valve, and the rear end of the liquid distribution plate is provided with a filter element assembly; the electromagnetic pilot valve is arranged on the right side of the liquid distribution plate, the pilot valve protection plate is arranged above the liquid distribution plate, and the valve core assembly is arranged in the valve body. According to the utility model, the rapid liquid supply, liquid inlet cut-off and unloading of the bracket can be realized according to the state of the bracket controller, the operation is simple, and the labor intensity and the safety risk of workers are reduced. The valve core and the valve seat adopt spherical sealing structures, even if the sealing surface has repeated opening and closing actions and tiny erosion damage, the valve core and the valve seat can be automatically repaired, and the service life and the sealing performance of the product are improved.
Description
Technical Field
The utility model belongs to the technical field of valves for controlling electrohydraulic systems of hydraulic supports, and particularly relates to a high-flow stop unloading valve for controlling main liquid inlet of a hydraulic support.
Background
With the continuous development of coal mining technology, a large amount of automatic and intelligent equipment is required to improve the production efficiency, ensure the personal safety of miners and save the cost. The liquid inlet stop valve is used as one of key parts of the hydraulic support of the coal mine, and has important functions of cutting off main liquid inlet of the fault support, protecting safety, reducing hydraulic impact, improving reliability of equipment and the like.
The existing liquid inlet stop valve in the current market mostly adopts a manual straight-through type spherical stop valve, and the working principle is as follows: the handle of the spherical stop valve drives the valve rod and the valve body to act so as to control the on-off of the main liquid inlet pipeline, however, the spherical stop valve has the following problems in the actual use process: the action of high-pressure liquid needs to be overcome in the closing process, so that the problems of large operation moment and high labor intensity exist; after the main liquid inlet of the fault bracket is closed by the spherical stop valve, high-pressure liquid may still exist in the subsequent hydraulic circuit, so that the residual pressure in the hydraulic circuit must be unloaded before the hydraulic bracket is maintained, otherwise, the hydraulic bracket is difficult to disassemble, and meanwhile, great potential safety hazards exist; after the support maintenance is completed, the support controller needs to be sequentially operated, the spherical stop valve is manually opened, and the operation is complex.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a high-flow stop unloading valve capable of automatically realizing rapid liquid supply, liquid inlet stop and unloading of a bracket according to the state of a bracket controller.
The aim of the utility model is realized by the following technical scheme: a high-flow stop unloading valve comprises a valve body assembly, a liquid distribution plate assembly, an electromagnetic pilot valve, a pilot valve protection plate and a valve core assembly;
the valve body assembly comprises a valve body and a plurality of joint assemblies, the front end of the valve body is provided with a first joint assembly, the rear end of the valve body is provided with a second joint assembly and a third joint assembly, and the left end of the valve body is provided with two plug assemblies;
the liquid distribution plate assembly comprises a liquid distribution plate, a one-way valve and a filter element assembly; the liquid distribution plate is arranged on the valve body, the front end of the liquid distribution plate is provided with a one-way valve, and the rear end of the liquid distribution plate is provided with a filter element component;
the electromagnetic pilot valve is installed on the right side of the liquid distribution plate, the pilot valve protection plate is installed above the liquid distribution plate, and the valve core assembly is installed in the valve body.
The valve body is connected with the first joint assembly, the second joint assembly and the third joint assembly through threads; the valve body is connected with the plug assembly through threads.
The liquid distribution plate is connected with the valve body through a screw, is connected with the one-way valve through a thread, and is connected with the filter element assembly through a U-shaped pin. The electromagnetic pilot valve is connected with the liquid distribution plate through screws, and the electromagnetic pilot valve is connected with an external control circuit through a connector arranged on the electromagnetic pilot valve. The pilot valve protection plate is connected with the liquid distribution plate by adopting screws.
Two groups of valve core components connected in parallel are arranged in the valve body, and the valve core components are connected with the valve body through threads; the valve body is internally provided with a valve body liquid inlet P, a liquid outlet A and a liquid return port T, and a liquid inlet P2 of the valve core assembly and the valve body liquid inlet P are arranged at different positions; a liquid inlet P1 of the liquid distribution plate is arranged at the liquid inlet P of the valve body;
the valve core assembly comprises a sleeve, a spring seat, a valve sleeve, a valve core, a valve seat, a piston and a retainer ring; the valve core assembly is connected with the internal thread of the valve body through the external thread on the sleeve, a spring is arranged in the sleeve, and the bottom of the valve core is fixed in the spring seat; a valve sleeve is arranged at the periphery of one end of the valve core adjacent to the spring seat, a valve seat is arranged at the periphery of the middle part, and a piston is arranged at the periphery of the other end; the piston is connected with the plug assembly; the contact surface of the valve core and the valve seat adopts a spherical sealing structure, the contact surface of the piston and the valve seat adopts a conical surface sealing structure, and the contact position of the valve sleeve and the valve seat adopts a spherical sealing structure.
Compared with the prior art, the utility model has the following beneficial effects:
(1) According to the high-flow stop unloading valve, rapid liquid supply, liquid inlet stop and unloading of the support can be automatically realized according to the state of the support controller, so that the operation is simple, and the labor intensity and the safety risk of workers are greatly reduced.
(2) The valve core and the valve seat of the valve core assembly adopt spherical sealing structures, and even if the sealing surface has repeated opening and closing actions and tiny erosion damage, the valve core and the valve seat can be automatically repaired, so that the service life and the sealing performance of the product are improved.
(3) The valve body liquid inlet and the valve core assembly liquid inlet are staggered, so that the direct impact of high-pressure liquid on the valve core assembly can be effectively relieved, and the product quality and the service performance of the valve are ensured.
Drawings
FIG. 1 is a block diagram of the present utility model;
FIG. 2 is a cross-sectional view of a valve body assembly;
FIG. 3 is a second cross-sectional view of the valve body assembly;
FIG. 4 is a cross-sectional view of the valve cartridge assembly;
FIG. 5 is a schematic diagram of the operation of the present utility model;
reference numerals illustrate: 1-a valve body assembly; 101-valve body, 102-first joint assembly, 103-plug assembly, 104-second joint assembly, 105-third joint assembly;
2-a liquid preparation plate assembly; 201-a liquid preparation plate, 202-a one-way valve and 203-a filter element assembly;
3-electromagnetic pilot valve assembly; 301-linker;
4-a pilot valve protection plate;
5-a valve core assembly; 501-sleeve 501, 502-spring, 503-spring seat, 504-valve sleeve, 505-valve core, 506-valve seat, 507-piston.
Detailed Description
The technical scheme of the utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1, the high-flow stop unloading valve comprises a valve body assembly 1, a liquid distribution plate assembly 2, an electromagnetic pilot valve 3, a pilot valve protection plate 4 and a valve core assembly 5;
the valve body assembly 1 comprises a valve body 101 and a plurality of joint assemblies, wherein a first joint assembly 102 is arranged at the front end of the valve body 101, a second joint assembly 104 and a third joint assembly 105 are arranged at the rear end of the valve body 101, and two plug assemblies 103 are arranged at the left end of the valve body 101;
the liquid distribution plate assembly 2 comprises a liquid distribution plate 201, a one-way valve 202 and a filter element assembly 203; the liquid distribution plate 201 is arranged on the valve body 101, and a one-way valve 202 is arranged at the front end of the liquid distribution plate 201 and used for relieving the impact of high-pressure liquid on the electromagnetic pilot valve; the filter element assembly 203 is arranged at the rear end, so that the fine filtration of the electromagnetic pilot valve feed liquid is realized; the liquid distribution plate 201 is internally provided with a control flow passage and a flow distribution flow passage hole, and the synchronous action of the two groups of valve core assemblies 5 connected in parallel is controlled.
The electromagnetic pilot valve 3 is arranged on the right side of the liquid distribution plate 201, the pilot valve protection plate 4 is arranged above the liquid distribution plate 201, and the valve core assembly 5 is arranged in the valve body 101.
The valve body 101 is in threaded connection with the first joint assembly 102, the second joint assembly 104 and the third joint assembly 105; the valve body 101 is threadably connected to the plug assembly 103.
The liquid distribution plate 201 is connected with the valve body 101 through screws, the liquid distribution plate 201 is connected with the one-way valve 202 through threads, and the liquid distribution plate 201 is connected with the filter element assembly 203 through U-shaped pins.
The electromagnetic pilot valve 3 is connected with the liquid distribution plate 201 through screws, and the electromagnetic pilot valve 3 is connected with an external control circuit through a connector 301 arranged on the electromagnetic pilot valve 3. The pilot valve protection plate 4 is connected with the liquid distribution plate 201 by adopting screws.
As shown in fig. 2 and fig. 3, two groups of valve core assemblies 5 connected in parallel are arranged inside the valve body 101, so that the split control of kiloliter-level flow can be realized; the valve core assembly 5 is connected with the valve body 101 through threads; the valve body 101 is internally provided with a valve body liquid inlet P, a liquid outlet (working port) A and a liquid return port T, the two valve core components 5 share the liquid inlet P (high-pressure liquid enters the valve core from P and then enters the valve core components through a liquid inlet P2 of the valve core components, so the liquid inlet P is also the total liquid inlet of the valve core components), the liquid outlet A and the liquid return port T, and the liquid inlet and outlet control of the high-pressure liquid and the unloading effect of a subsequent hydraulic loop are realized; the liquid inlet P2 and the liquid inlet P of the valve core assembly are arranged at different positions, and high-pressure liquid can enter the valve core assembly through the buffer and the P2 after passing through the liquid inlet P of the valve body, so that the direct impact of the high-pressure liquid on the valve core assembly can be effectively relieved, and the product quality and the service performance of the high-pressure liquid are ensured; the liquid inlet P of the valve body 101 is provided with a liquid inlet P1 of the liquid distribution plate 201.
As shown in fig. 4, the valve core assembly 5 includes a sleeve 501, a spring 502, a spring seat 503, a valve sleeve 504, a valve core 505, a valve seat 506, a piston 507, a sealing ring and a retainer ring; the valve core assembly 5 is connected with the internal thread of the valve body 101 through the external thread on the sleeve 501, a spring 502 is arranged in the sleeve 501, and the bottom of the valve core 505 is fixed in the spring seat 503; a valve sleeve 504 is arranged at the periphery of one end of the valve core 505 adjacent to the spring seat, a valve seat 506 is arranged at the periphery of the middle part, and a piston 507 is arranged at the periphery of the other end; the piston 507 is connected with the plug assembly 103; the contact surface of the valve core 505 and the valve seat 506 adopts a spherical sealing structure, the contact surface of the piston 507 and the valve seat 506 adopts a conical surface sealing structure, and the contact position of the valve sleeve 504 and the valve seat 506 adopts a spherical sealing structure.
The high-flow stop unloading valve is in a normally open state when the bracket is normal, so that the normal action of the hydraulic bracket is ensured; when the support is abnormal, the electromagnetic pilot valve 3 controls the two groups of valve core assemblies 5 connected in parallel to change the direction, so that the main liquid inlet of the fault support is cut off, and the residual pressure in a subsequent loop is realized. The high-flow stop unloading valve is driven by an electromagnetic pilot valve 3, and a control circuit of the electromagnetic pilot valve 3 is provided by a bracket controller. As shown in fig. 5, the specific working principle is: when the support works normally, high-pressure liquid enters the liquid inlet of the electromagnetic pilot valve through the filter element component and the one-way valve, and the electromagnetic pilot valve is in a closed state, so that the high-pressure liquid directly passes through the two groups of valve core components which are connected in parallel, and the rapid liquid supply of the action of the hydraulic support is ensured. If the support breaks down, the 'blocking' or 'emergency stop' button of the support controller is required to be pressed in time, at the moment, the support controller independently provides one path of power supply for the electromagnetic pilot valve, the high-flow stop unloading valve is controlled to change direction, the main liquid inlet of the broken support is cut off, and meanwhile, the residual pressure in the subsequent pipeline of the support returns to the oil tank through the liquid return port, so that the rapid unloading of the hydraulic support is realized. After the maintenance of the bracket is completed, only a locking or emergency stop button of the bracket controller is required to be pulled up, the electromagnetic pilot valve is powered off, and the high-flow stop unloading valve is automatically reset, so that the normal liquid supply of the hydraulic bracket is ensured.
For those skilled in the art, the electromagnetic pilot valve 3 in the above structure belongs to the prior art, and the specific structure and working principle are not repeated.
Those of ordinary skill in the art will recognize that the embodiments described herein are for the purpose of aiding the reader in understanding the principles of the present utility model and should be understood that the scope of the utility model is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific modifications and combinations from the teachings of the present disclosure without departing from the spirit thereof, and such modifications and combinations remain within the scope of the present disclosure.
Claims (6)
1. The high-flow stop unloading valve is characterized by comprising a valve body assembly (1), a liquid distribution plate assembly (2), an electromagnetic pilot valve (3), a pilot valve protection plate (4) and a valve core assembly (5);
the valve body assembly (1) comprises a valve body (101) and a plurality of joint assemblies, a first joint assembly (102) is arranged at the front end of the valve body (101), a second joint assembly (104) and a third joint assembly (105) are arranged at the rear end of the valve body (101), and two plug assemblies (103) are arranged at the left end of the valve body (101);
the liquid distribution plate assembly (2) comprises a liquid distribution plate (201), a one-way valve (202) and a filter element assembly (203); the liquid distribution plate (201) is arranged on the valve body (101), the front end of the liquid distribution plate (201) is provided with a one-way valve (202), and the rear end of the liquid distribution plate is provided with a filter element assembly (203);
the electromagnetic pilot valve (3) is arranged on the right side of the liquid distribution plate (201), the pilot valve protection plate (4) is arranged above the liquid distribution plate (201), and the valve core assembly (5) is arranged in the valve body (101).
2. A high flow shut-off unloader valve according to claim 1, wherein the valve body (101) is threadably connected to the first joint assembly (102), the second joint assembly (104) and the third joint assembly (105); the valve body (101) is connected with the plug assembly (103) through threads.
3. The high-flow stop unloading valve according to claim 1, wherein the liquid distribution plate (201) is connected with the valve body (101) through a screw, the liquid distribution plate (201) is connected with the one-way valve (202) through threads, and the liquid distribution plate (201) is connected with the filter element assembly (203) through a U-shaped pin.
4. The high-flow stop unloading valve according to claim 1, wherein the electromagnetic pilot valve (3) is connected with the liquid distribution plate (201) through a screw, and the electromagnetic pilot valve (3) is connected with an external control circuit through a joint (301) arranged on the electromagnetic pilot valve (3).
5. A high flow stop unloading valve according to claim 1, characterized in that the pilot valve protection plate (4) is screwed to the liquid distribution plate (201).
6. The high-flow stop unloading valve according to claim 1, wherein two groups of valve core assemblies (5) connected in parallel are arranged in the valve body (101), and the valve core assemblies (5) are connected with the valve body (101) through threads; a valve body liquid inlet P, a liquid outlet A and a liquid return port T are arranged in the valve body (101), and a liquid inlet P2 of the valve core assembly and the valve body liquid inlet P are arranged at different positions; a liquid inlet P1 of the liquid distribution plate (201) is arranged at the liquid inlet P of the valve body;
the valve core assembly (5) comprises a sleeve (501), a spring (502), a spring seat (503), a valve sleeve (504), a valve core (505), a valve seat (506) and a piston (507); the valve core assembly (5) is connected with the internal thread of the valve body (101) through the external thread on the sleeve (501), a spring (502) is arranged in the sleeve (501), and the bottom of the valve core (505) is fixed in the spring seat (503); a valve sleeve (504) is arranged at the periphery of one end of the valve core (505) adjacent to the spring seat, a valve seat (506) is arranged at the periphery of the middle part, and a piston (507) is arranged at the periphery of the other end; the piston (507) is connected with the plug assembly (103); the contact surface of the valve core (505) and the valve seat (506) adopts a spherical sealing structure, the contact surface of the piston (507) and the valve seat (506) adopts a conical sealing structure, and the contact position of the valve sleeve (504) and the valve seat (506) adopts a spherical sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321467313.9U CN220302167U (en) | 2023-06-09 | 2023-06-09 | High-flow stop unloading valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321467313.9U CN220302167U (en) | 2023-06-09 | 2023-06-09 | High-flow stop unloading valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220302167U true CN220302167U (en) | 2024-01-05 |
Family
ID=89352287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321467313.9U Active CN220302167U (en) | 2023-06-09 | 2023-06-09 | High-flow stop unloading valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220302167U (en) |
-
2023
- 2023-06-09 CN CN202321467313.9U patent/CN220302167U/en active Active
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