CN218280813U - High-pressure backwashing filter station - Google Patents
High-pressure backwashing filter station Download PDFInfo
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- CN218280813U CN218280813U CN202222873931.5U CN202222873931U CN218280813U CN 218280813 U CN218280813 U CN 218280813U CN 202222873931 U CN202222873931 U CN 202222873931U CN 218280813 U CN218280813 U CN 218280813U
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Abstract
The utility model discloses a high pressure back flush filter station, including the mounting bracket, be fixed with back flush filter, this ampere of power, controller, driver, stop valve and exit joint on the mounting bracket, this ampere of power, controller and driver are fixed in mounting bracket forward one side, and the mounting bracket forward opposite side is fixed with two sets of parallelly connected back flush filters, and mounting bracket reverse side one side is fixed with the exit pipeline, and the exit pipeline passes through the stop valve and exits the articulate. The backwashing filter comprises a filter valve body, an electromagnetic pilot valve, a filter element, a switch valve, a reversing valve and an oil filter, wherein the filter element is arranged on the filter valve body by taking two filter elements as a group, and the external joint of the filter valve body is respectively connected with two pressure sensors and two shock-proof pressure gauges. The external cable of the controller is respectively connected with the intrinsic safety power supply and the driver, and the filter element on the filter valve body is communicated with the internal pipelines of the switch valve, the reversing valve and the electromagnetic pilot valve, so that alternate control is realized.
Description
Technical Field
The utility model belongs to the technical field of hydraulic pressure filter station, concretely relates to high-pressure back flush filter station.
Background
The high-pressure backwashing filter station is a filter device used for a liquid supply system of fully mechanized mining equipment in a coal mine, is used as a first-stage filter at an outlet of a pump station, and is used for protecting various hydraulic elements of fully mechanized mining equipment such as a hydraulic support, a scraper conveyor and the like in a severe underground environment. The hydraulic support and the filter device can prevent the fault problems of the hydraulic support, the conveyor, the filter device and the like caused by mechanical damage and sealing damage caused by mechanical impurities, external coal ash and dust and other pollutants in a hydraulic system.
The backwashing modes of the high-pressure filter station in the prior art are mostly time and pressure difference modes, the countermeasures for the occurrence of electronic faults are relatively weak, the backwashing is not timely, the pressure loss of the filter station is easily increased, the pressure of a support system is reduced, the supporting capacity is reduced, and the safety production efficiency is seriously influenced. The filter station is easy to generate faults caused by the performance damage of the reversing valve during operation, the maintenance frequency is increased, and the service life of a product is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problems and providing a high-pressure backwashing filter station which has simple structure, stable and reliable work and ensures the high efficiency and safety of production.
In order to solve the technical problem, the technical scheme of the utility model is that: a high-pressure backwashing filter station comprises a mounting frame, wherein a backwashing filter, an intrinsic safety power supply, a controller, a driver, a stop valve and an inlet-outlet connector are fixed on the mounting frame, the intrinsic safety power supply, the controller and the driver are fixed on one positive side of the mounting frame, two groups of backwashing filters connected in parallel are fixed on the other positive side of the mounting frame, an inlet-outlet pipeline is fixed on one reverse side of the mounting frame, and the inlet-outlet pipeline is connected with the inlet-outlet connector through the stop valve; the backwashing filter comprises a filter valve body, an electromagnetic pilot valve, a filter element, a switch valve, a reversing valve and an oil filter, wherein the filter element is arranged on the filter valve body in a group of two pieces, and the external joint of the filter valve body is respectively connected with two pressure sensors and two shock-proof pressure gauges; an external cable of the controller is respectively connected with the intrinsic safety power supply, the pressure sensor and the driver, a filter element on the filter valve body is communicated with internal pipelines of the switch valve, the reversing valve and the electromagnetic pilot valve, and parts on two sides of the filter valve body are in one-to-one correspondence with each other in mounting positions, so that alternate control, namely a backwashing process, is conveniently realized; the filter valve body is provided with a liquid inlet and outlet, and the inlet and outlet joint is communicated with the liquid inlet and outlet of the backwashing filter; the switching-over valve includes left valve barrel, right valve barrel, case and reset spring, the inside stairstepping trompil that is of left valve barrel, slidable mounting has the case, the case middle part is equipped with annular boss, reset spring passes the case outer wall, one end and boss butt, the other end is connected on the laminating face that compresses tightly of right valve barrel and left valve barrel, the through-flow hole K mouth has been seted up to the outer wall right side annular groove department of left valve barrel, connect the inside spring chamber L chamber of case, the overflow hole M mouth has been seted up to the case right-hand member and the left slotted hole N mouth intercommunication of boss.
Preferably, the liquid inlet and outlet comprises a liquid inlet and a liquid outlet, filter elements, a switch valve and reversing valve mounting hole sites are symmetrically distributed along the liquid inlet and outlet, through holes are formed in two sides of the filter valve body and are respectively communicated with the liquid inlet and outlet, and a pressure gauge and a pressure sensor are fixedly connected to the filter valve body.
Preferably, the filter valve body is connected with a sewage pipeline, the filter valve body is provided with a backflushing sewage draining outlet and an electromagnetic pilot valve liquid return port, the backflushing sewage draining outlet is distributed on the left side and the right side of the filter valve body and connected into the sewage draining pipeline in parallel, and the electromagnetic pilot valve liquid return port is communicated with the electromagnetic pilot valve.
Preferably, the opening of the long circular hole N is communicated with the backflushing sewage draining outlet through the opening of the overflow hole M.
Preferably, a control port J is formed in the left end face of the left valve sleeve, and the electromagnetic pilot valve is connected with the J.
Preferably, the pipeline connected to the liquid inlet and outlet is a steel pipe assembly, and the pipeline connected to the backflushing drain outlet and the electromagnetic pilot valve liquid return port is a rubber pipe assembly.
Preferably, a driver on one side of the front face of the mounting rack is connected to the controller, the intrinsic safety power supply supplies electric energy to the controller, and the driver is electrically connected with the electromagnetic pilot valve through a circuit.
Preferably, the oil filter is arranged on the filter valve body, and the electromagnetic pilot valve is supplied with liquid through the oil filter.
Preferably, the valve core is in dynamic sealing fit with the left valve sleeve and the right valve sleeve through O-shaped rings respectively, and the tail part of the valve core is provided with an annular groove which is provided with a spring retainer ring.
The utility model has the advantages that: the utility model provides a high pressure back flush filter station compact structure, it is reasonable, high durability and convenient operation, back flush filter combination controller, can realize high pressure filter station at time mode through pressure sensor and electromagnetic pilot valve, pressure differential mode, the selection of time differential mode and manual control mode, improve the adaptability of high pressure filter station under to different environment and the response to strain ability to the trouble emergence, guarantee filter station good filter effect and life, the case fracture that will significantly reduce is simplified of switching-over valve structure, block up, trouble such as damage, the dynamic seal who adopts simultaneously ensures sealed and pressure isolation between each chamber, switching-over valve change easy operation, high efficiency, maintenance cost is reduced, work efficiency is improved.
Drawings
FIG. 1 is a schematic view of the front structure of a high-pressure backwashing filter station of the present invention;
FIG. 2 is a schematic view of the reverse structure of the present invention;
FIG. 3 is a schematic view of the backwash filter of the present invention;
FIG. 4 is a sectional view of the installation structure of the electromagnetic pilot valve and the reversing valve of the present invention;
fig. 5 is a sectional view of the structure of the reversing valve of the present invention.
Description of reference numerals: 1. a mounting frame; 2. backwashing the filter; 3. an intrinsically safe power supply; 4. a controller; 5. a driver; 6. a stop valve; 7. an inlet and outlet joint; 8. an inlet and outlet pipeline; 9. a liquid inlet and outlet; 10. a blowdown line; 11. a pressure sensor; 201. a filter valve body; 202. an electromagnetic pilot valve; 203. a filter element; 204. an on-off valve; 205. a diverter valve; 206. an oil filter; 208. a shock-proof pressure gauge; 901. a liquid inlet; 902. a liquid outlet; 2051. a left valve housing; 2052. a right valve housing; 2053. a valve core; 2054. a return spring; 2055. and a spring retainer ring.
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments:
as shown in fig. 1 to 5, the utility model provides a pair of high pressure back flush filter station, including mounting bracket 1, be fixed with back flush filter 2 on mounting bracket 1, this ampere of power 3, controller 4, driver 5, stop valve 6 and import and export joint 7, this ampere of power 3, controller 4 and driver 5 are fixed in mounting bracket 1 forward one side, and mounting bracket 1 forward opposite side is fixed with two sets of parallelly connected back flush filters 2, and 1 reverse side of mounting bracket is fixed with inlet and outlet pipeline 8, and inlet and outlet pipeline 8 passes through stop valve 6 and is connected with import and outlet joint 7. The backwashing filter 2 comprises a filter valve body 201, an electromagnetic pilot valve 202, a filter element 203, a switching valve 204, a reversing valve 205 and an oil filter 206, wherein the filter element 203 is arranged on the filter valve body 201 in a group of two pieces, and the external joints of the filter valve body 201 are respectively connected with two pressure sensors 11 and two shock-proof pressure gauges 208. An external cable of the controller 4 is respectively connected with the intrinsic safety power supply 3, the pressure sensor 11 and the driver 5, a filtering element 203 on the filter valve body 201 is communicated with internal pipelines of the switch valve 204, the reversing valve 205 and the electromagnetic pilot valve 202, and parts on two sides of the filter valve body 201 are in one-to-one correspondence with mounting positions of the parts, so that alternate control, namely a backwashing process, is conveniently realized. The filter valve body 201 is provided with a liquid inlet and outlet 9, and the inlet and outlet joint 7 is communicated with the liquid inlet and outlet 9 of the backwashing filter.
Reversing valve 205 includes left valve barrel 2051, right valve barrel 2052, case 2053 and reset spring 2054, left valve barrel 2051 is inside to be the stairstepping trompil, slidable mounting has case 2053, case 2053 middle part is equipped with annular boss, reset spring 2054 cover is established at the outer wall of case 2053, reset spring 2054's tip and the boss butt of case 2053 outer wall, the reset spring 2054 other end and right valve barrel 2052 butt, the position of butt is on the right valve barrel 2052 with the laminating binding face that compresses tightly of left valve barrel 2051, discharge hole K mouth has been seted up to the outer wall right side annular groove department of left valve barrel 2051, connect the inside spring chamber L chamber of case, overflow hole M mouth has been seted up to case 2053 right-end and the left hole N mouth intercommunication of boss.
The liquid inlet and outlet 9 comprises a liquid inlet 901 and a liquid outlet 902, the filter valve body 201 is provided with filter element mounting hole sites, switch valve mounting hole sites and reversing valve mounting hole sites which are distributed bilaterally symmetrically along the liquid inlet and outlet 9, through holes are formed in two sides of the filter valve body 201 and are respectively communicated with the liquid inlet and outlet 9, and the filter valve body 201 is fixedly connected with a pressure gauge 208 and a pressure sensor 11.
The filter valve body 201 is connected to the filter element 203 through the filter element mounting hole site, to the on-off valve 204 through the on-off valve mounting hole site, and to the direction valve 205 through the direction valve mounting hole site. The number of the filter elements 203 is two, the number of the on-off valves 204 is two, the number of the direction change valves 205 is two, and both are symmetrically distributed on the filter valve body 201.
The liquid inlet 901 is communicated with a port K in the reversing valve 205, and the port K is communicated with a liquid inlet of a filter element of the filter element 203. In this embodiment, the liquid inlet pipeline is a three-way structure, and is respectively communicated with the K port of the liquid inlet 901 and the reversing valve 205 and the liquid inlet of the filter element. The liquid outlet 902 is in communication with the filter element liquid outlet of the filter element 203.
As shown in fig. 2, in this embodiment, two backwash filters 2 are installed in parallel on the mounting frame 1, liquid outlets 902 and liquid inlets 901 of the two backwash filters 2 are respectively communicated through inlet and outlet pipelines 8 arranged up and down, and the inlet and outlet pipelines 8 are tubular structures. The inlet and outlet joint 7 is existing mature technology equipment, the inlet and outlet joint 7 is respectively communicated with an inlet and outlet pipeline 8, the mode that the inlet and outlet joint 7 is connected with the inlet and outlet pipeline 8 is an existing connection mode, for example, an internal thread structure is arranged on an inlet and an outlet of an internal pipeline of the inlet and outlet joint 7, an external thread structure is arranged at the end part of the inlet and outlet pipeline 8, the inlet and outlet pipeline 8 is connected with the inlet and outlet joint 7 in a thread matching mode, and the specific connection mode is that an existing mining U-shaped pin type quick joint is adopted for connection. The stop valves 6 are installed in the middle of the inlet and outlet pipelines 8, the inlet and outlet pipelines 8 provided with the stop valves 6 are totally four and are arranged up and down, the inlet and outlet pipelines are respectively set as a first inlet and outlet pipeline, a second inlet and outlet pipeline, a third inlet and outlet pipeline and a fourth inlet and outlet pipeline, the number of the inlet and outlet joints 7 is two, and the inlet and outlet joints are respectively set as a first inlet and outlet joint and a second inlet and outlet joint.
The end of the first inlet-outlet pipeline is communicated with the liquid outlet 902 of the right backwash filter 2, the other end of the first inlet-outlet pipeline is communicated with the end of the second inlet-outlet pipeline through the first inlet-outlet joint, and the other end of the second inlet-outlet pipeline is communicated with the liquid outlet 902 of the other backwash filter 2. The liquid inlet 901 of the right backwash filter 2 is communicated with the end of a third inlet and outlet pipeline, the other end of the third inlet and outlet pipeline is communicated with the end of a fourth inlet and outlet pipeline through a second inlet and outlet joint, and the other end of the fourth inlet and outlet pipeline is communicated with the liquid inlet 901 of another backwash filter 2. In this embodiment, the liquid inlet 901 and the liquid outlet 902 are respectively communicated with the filter element 203 through a pipeline arranged inside the filter valve body 201, and are also communicated with the corresponding inlet and outlet pipeline 8. Through setting up two parallelly connected back flush filters 2, can increase the utility model discloses the filtration efficiency of filter station.
Be connected with sewage pipes 10 on the filter valve body 201, seted up recoil drain 2011 and electromagnetic pilot valve on the filter valve body 201 and returned liquid mouth 2012, recoil drain 2011 distributes in the filter valve body 201 left and right sides, parallelly connected access sewage pipes 10, electromagnetic pilot valve returns liquid mouth 2012 and electromagnetic pilot valve 202 intercommunication.
The long round hole N is communicated with a backflushing sewage drain 2011 through an overflow hole M, and a control port J is formed in the left end face of the left valve sleeve 2051 and connected with the electromagnetic pilot valve 202 through an internal pipeline. The pressure gauge 208 and the pressure sensor 11 are installed on the valve body 201 and communicated with the L-cavity, and are used for detecting the pressure on the filter element liquid outlet and the backflushing sewage outlet 2011 of the filter element 203.
The pipeline connected to the liquid inlet and outlet 9 is a steel pipe component, and the pipeline connected to the backflushing drain 2011 and the electromagnetic pilot valve liquid return opening 2012 is a rubber pipe component.
In the present embodiment, the electromagnetic pilot valve 202 is respectively communicated with the switching valve 204 and the reversing valve 205, and the electromagnetic pilot valve 202 controls the switching valve 204 and the reversing valve 205 to operate.
The operation of the reversing valve 205 is performed during backwashing, and during backwashing: when the electromagnetic pilot valve 202 receives a signal from the actuator 5, the electromagnet on the corresponding side of the electromagnetic pilot valve 202 operates, the electromagnetic pilot valve 202 is opened, and the electromagnetic pilot valve 202 controls the corresponding on-off valve 204 to be closed. Namely: the switch valve 204 on the corresponding side liquid inlet pipeline of the filter element 203 to be backwashed is closed, and the J port of the reversing valve 205 on the corresponding side liquid inlet pipeline is communicated with the electromagnetic pilot valve 202. High-pressure liquid passing through the electromagnetic pilot valve 202 enters a cavity where a J port of the left valve sleeve 2051 is located through the J port, the cavity is filled with the high-pressure liquid, the force bearing mark of the end face of the left side of the valve core 2053 is F1 under the action of hydraulic pressure, the force bearing mark of the annular boss in the middle of the valve core 2053 is larger than that of the F1, and the force bearing mark of the annular boss is F2. The valve core 2053 moves to the right, the spring 2054 is compressed, and at the moment, the K port is communicated with the N port and the M port. The liquid containing impurities in the filter element 203 flows out from the drain 2011 sequentially through the K port, the N port, and the M port. After the sewage draining is finished, the electromagnet of the pilot valve 202 is powered off, the pilot valve 202 resets, the pressure of the J port is reduced, the valve core 2053 of the reversing valve 205 moves leftwards and resets, F1 is less than F2, and the work is finished.
The driver 5 on the front side of the mounting rack 1 is connected to the controller 4, the intrinsically safe power supply 3 supplies electric energy to the controller 4, and the driver 5 is electrically connected with the electromagnetic pilot valve 202 through a circuit.
An oil filter 206 is provided on the filter valve body 201, and the electromagnetic pilot valve 202 is supplied with liquid through the oil filter 206. In this embodiment, an inlet of the oil filter 206 is connected to a liquid outlet pipe provided in the filter valve body 201, and a filter outlet of the oil filter 206 is communicated with the electromagnetic pilot valve 202 and supplies liquid.
The valve core 2053 is in dynamic sealing fit with the left valve sleeve 2051 and the right valve sleeve 2052 through O-shaped rings, and the tail part of the valve core 2053 is provided with an annular groove which is provided with a spring retainer 2055.
The utility model discloses a working process does:
in this embodiment, the liquid is an emulsion. High-pressure liquid output by a pump station enters a liquid inlet 901 of the high-pressure filter from an inlet pipeline of the high-pressure filtering station, the switch valves 204 on two sides are opened under the action of hydraulic pressure and flow to the filtering element 203, when the high-pressure liquid passes through a K port by-passed by the reversing valve 205, the high-pressure liquid enters and fills an L cavity of the reversing valve 205 through the K port, meanwhile, the high-pressure liquid enters the filtering element 203 and is filtered from the outside to the inside, and the high-pressure liquid is filtered from the outside to the inside to remove pollution impurities to obtain clean emulsion and then flows to a working end through a liquid outlet 902.
During the back flushing stage, the controller 4 on the bracket is used for controlling, the controller 4 and the driver 5 are both existing equipment, the controller 4 controls the driver 5 to work, and the driver 5 is electrically connected with the electromagnetic pilot valve 202. The controller 4 has three modes of control modes, i.e., a time mode, a pressure mode, and a time-pressure mode. The electromagnetic pilot valve 202 is also provided with a manual control mode of a pilot valve control button, and a worker can directly operate the pilot valve control button to control. The back washing working process comprises the following steps: controller 4 on the mounting bracket 1 controls the action of electromagnetic pilot valve 202 through driver 5, high-pressure liquid enters corresponding switching-over valve 205 control port J mouth through the liquid outlet of electromagnetic pilot valve 202, and promote case 2053 in the switching-over valve 205 and move to the right, it communicates with each other with K mouth through N mouth to correspond switching-over valve M mouth, and communicate with each other with drain 2011, it closes to correspond side ooff valve 204 this moment, cut off and correspond the side and treat the liquid that filters, prevent that contaminated fluid from passing through ooff valve 204 refluence and getting into inlet 901. The other filter element 201 in the backwashing filter 2 filters normally, and the normally filtered clean emulsion is connected to the side to be washed through a flow passage. During the in-service use, liquid outlet 902 is the high pressure for drain 2011 for the pressure of liquid outlet 902 is higher than the pressure of drain 2011, and the clean emulsion part of high pressure after the filtration can dash towards the liquid outlet of the filter element 203 that treats to wash and get into the filter element 203 that treats to wash, treats the stainless steel sintered filter screen of the filter element 203 that washes from inside to outside and carries out the back flush, washes the back sewage and discharges from K mouth through M mouth. The rest of the filtered clean emulsion is supplied to external equipment through a liquid outlet 902 to maintain a high-pressure environment, so that normal filtration is completed. And the alternate back flushing is realized by signals of a switching controller 4.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.
Claims (9)
1. A high-pressure backwashing filter station is characterized in that: the device comprises a mounting rack (1), wherein a backwashing filter (2), an intrinsic safety power supply (3), a controller (4), a driver (5), a stop valve (6) and an inlet-outlet joint (7) are fixed on the mounting rack (1), the intrinsic safety power supply (3), the controller (4) and the driver (5) are fixed on one positive side of the mounting rack (1), two groups of backwashing filters (2) which are connected in parallel are fixed on the other positive side of the mounting rack (1), an inlet-outlet pipeline (8) is fixed on one reverse side of the mounting rack (1), and the inlet-outlet pipeline (8) is connected with the inlet-outlet joint (7) through the stop valve (6); the backwashing filter (2) comprises a filter valve body (201), an electromagnetic pilot valve (202), a filter element (203), a switch valve (204), a reversing valve (205) and an oil filter (206), wherein the filter element (203) is arranged on the filter valve body (201) in a group of two pieces, and the external joint of the filter valve body (201) is respectively connected with two pressure sensors (11) and two shock-resistant pressure gauges (208); an external cable of the controller (4) is respectively connected with the intrinsic safety power supply (3), the pressure sensor (11) and the driver (5), a filtering element (203) on the filter valve body (201) is communicated with internal pipelines of the switch valve (204), the reversing valve (205) and the electromagnetic pilot valve (202), and parts on two sides of the filter valve body (201) are installed in one-to-one correspondence, so that alternate control, namely a backwashing process, is conveniently realized; a liquid inlet and outlet (9) is formed in the filter valve body (201), and an inlet and outlet joint (7) is communicated with the liquid inlet and outlet (9) of the backwashing filter; reversing valve (205) are including left valve barrel (2051), right valve sleeve (2052), case (2053) and reset spring (2054), left side valve barrel (2051) is inside to be the stairstepping trompil, slidable mounting has case (2053), case (2053) middle part is equipped with annular boss, reset spring (2054) passes the case outer wall, one end and boss butt, the other end is connected on the laminating binding face that compresses tightly of right valve barrel (2052) and left valve barrel (2051), the outer wall right side annular groove department of left side valve barrel (2051) has seted up through-flow hole K mouth, connect case inside spring chamber L chamber, overflow hole M mouth and the left slotted hole N mouth intercommunication of boss have been seted up to case (2053) right-hand member.
2. A high pressure backwash filter station as in claim 1 wherein: the liquid inlet and outlet (9) comprises a liquid inlet (901) and a liquid outlet (902), the filter valve body (201) is provided with filter element mounting hole sites, switch valve mounting hole sites and reversing valve mounting hole sites which are distributed in bilateral symmetry along the liquid inlet and outlet (9), through holes are formed in two sides of the filter valve body (201) and are respectively communicated with the liquid inlet and outlet (9), and the filter valve body (201) is fixedly connected with a pressure gauge (208) and a pressure sensor (11).
3. A high pressure backwash filter station as in claim 1 wherein: be connected with sewage pipes (10) on filter valve body (201), seted up recoil drain (2011) and electromagnetic pilot valve on filter valve body (201) and returned liquid mouth (2012), recoil drain (2011) distributes in the filter valve body (201) left and right sides, parallelly connected access sewage pipes (10), and electromagnetic pilot valve returns liquid mouth (2012) and electromagnetic pilot valve (202) intercommunication.
4. A high pressure backwash filter station as in claim 1 wherein: the port of the long round hole N is communicated with a backflushing sewage draining outlet (2011) through the port of the overflow hole M.
5. A high pressure backwash filter station as in claim 1 wherein: a control port J port is formed in the left end face of the left valve sleeve (2051), and the electromagnetic pilot valve (202) is connected with the J port.
6. A high pressure backwash filter station as in claim 1 wherein: the pipeline that connects on business turn over liquid mouth (9) is the steel pipe subassembly, and the pipeline that links to each other on recoil drain outlet (2011) and the electromagnetism pilot valve returns liquid mouth (2012) is the rubber tube subassembly.
7. A high pressure backwash filter station as in claim 1 wherein: the driver (5) on one side of the front face of the mounting frame (1) is connected into the controller (4), the intrinsic safety power source (3) supplies electric energy for the controller (4), and the driver (5) is electrically connected with the electromagnetic pilot valve (202) through a circuit.
8. A high pressure backwash filter station as in claim 1 wherein: the oil filter (206) is arranged on the filter valve body (201), and liquid is supplied to the electromagnetic pilot valve (202) through the oil filter (206).
9. A high pressure backwash filter station as in claim 1 wherein: the valve core (2053) is in dynamic sealing fit with the left valve sleeve (2051) and the right valve sleeve (2052) through O-shaped rings respectively, and the tail part of the valve core (2053) is provided with an annular groove which is provided with a spring retainer ring (2055).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222873931.5U CN218280813U (en) | 2022-10-31 | 2022-10-31 | High-pressure backwashing filter station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222873931.5U CN218280813U (en) | 2022-10-31 | 2022-10-31 | High-pressure backwashing filter station |
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| CN218280813U true CN218280813U (en) | 2023-01-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116255398A (en) * | 2023-05-09 | 2023-06-13 | 江苏领臣精密机械有限公司 | Static pressure rotary table device |
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2022
- 2022-10-31 CN CN202222873931.5U patent/CN218280813U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116255398A (en) * | 2023-05-09 | 2023-06-13 | 江苏领臣精密机械有限公司 | Static pressure rotary table device |
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