CN214946753U - Recoil control valve - Google Patents

Abstract

The utility model relates to a recoil control valve, including control valve body, the electromagnetic pilot valve who is connected with control valve body, axial movable mounting in control valve internal piston, valve rod subassembly and fixed mounting and be used for placing valve rod subassembly's valve rod disk seat, control valve body is cavity form and forms the valve body and leads to the chamber, control valve body has inlet, business turn over liquid double-purpose mouth and the drain that communicates each other, valve rod disk seat fixed mounting in the valve body leads to the intracavity, the valve body leads to the intracavity and installs the recoil disk seat in, the utility model discloses a structural design has realized the inside cleaning work of control valve, and only needs solenoid valve control can switch operating condition, and the solenoid valve only needs to utilize automatically controlled principle control, can realize automatic recoil cleaning work, convenient and fast, and automatic level is high.

Description

Recoil control valve

Technical Field

The utility model relates to a solenoid valve technical field, concretely relates to recoil control valve.

Background

The control valve is an industrial device controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, and is not limited to hydraulic pressure and pneumatics. Used in industrial control systems to regulate the direction, flow, velocity and other parameters of a medium. The control valve can be matched with different circuits to realize the expected control, and the accuracy and flexibility of the control can be ensured. At present, a transmission control valve is generally not provided with a backflushing structure, dirt is easy to generate in the control valve for a long time, the cleaning mode of the control valve is usually manually disassembled and manually cleaned, the manual cleaning efficiency is lower than that of mechanical operation, the control valve is inconvenient to operate, and the normal operation efficiency of the control valve is affected, so that the development of the control valve with automatic backflushing cleaning is particularly important.

Disclosure of Invention

Technical problem to be solved

The utility model aims to overcome the defects of the prior art, solve the problem of inconvenient back flushing in the prior art and provide a back flushing control valve.

(II) technical scheme

In order to realize the purpose, the utility model discloses a technical scheme is: a backflushing control valve comprises a control valve body, an electromagnetic pilot valve connected with the control valve body, a piston movably arranged in the control valve body in an axial direction, a valve rod assembly and a valve rod valve seat fixedly arranged in the control valve body and used for placing the valve rod assembly, wherein the control valve body is hollow and forms a valve body through cavity, the control valve body is provided with a liquid inlet, a liquid inlet and outlet dual-purpose port and a drain outlet which are communicated with each other, the valve rod valve seat is fixedly arranged in the valve body through cavity, a backflushing valve seat is arranged in the valve body through cavity, a first through hole cavity and a second through hole cavity are arranged in the backflushing valve seat, the first through hole cavity is provided with a first through hole, the second through hole cavity is provided with a second through hole, the liquid inlet and outlet dual-purpose port is communicated with the valve body through cavity through the first through hole and the first through hole cavity, and the drain outlet is communicated with the valve body through cavity through the second through hole and the second through hole, the valve body is provided with a liquid pushing hole communicated with the liquid pushing cavity and a liquid pushing pipeline communicated with the liquid pushing hole, the liquid pushing pipeline is communicated with the electromagnetic pilot valve, and the valve face assembly switches and blocks the liquid inlet or the through hole cavity channel through the axial movement of the piston. The design of above structure realizes two kinds of operating condition: working state one and working state two, valve rod subassembly and piston are led to the intracavity at the valve body and are followed the setting direction activity of valve rod disk seat, switch working state one and working state two, working state one: under a normal working state, the electromagnetic valve is not electrified, the piston moves in a direction away from the valve rod and the valve seat under the action of elastic force, the valve face assembly blocks the through hole cavity channel, the liquid inlet is communicated with the liquid inlet and outlet dual-purpose port, and medium liquid flows in from the liquid inlet and flows out from the liquid inlet and outlet dual-purpose port; and a second working state: under the recoil operating condition, the solenoid valve circular telegram, under the solenoid valve effect, medium liquid gets into in the liquid pushing cavity, promote the piston, elasticity is overcome under the promotion of medium liquid to promote the direction motion of valve rod subassembly toward the inlet, the shutoff of valve rod subassembly the feed liquor leads to the chamber, the inlet does not communicate with business turn over liquid double-purpose mouth, business turn over liquid double-purpose mouth with the drain intercommunication, medium liquid is followed business turn over liquid double-purpose mouth flows in, follows the drain flows out, forms recoil blowdown work. The utility model discloses above structural design has realized the inside cleaning work of control valve, and only needs solenoid valve control can switch operating condition, and the solenoid valve only needs to utilize automatically controlled principle control, can realize automatic recoil cleaning work, convenient and fast, and the automation level is high.

Further, it leads to the chamber to have the feed liquor in the recoil disk seat, the feed liquor lead to the chamber with the inlet intercommunication and with first through-hole chamber intercommunication, the valve face subassembly includes the valve block, installs the first sealing washer that valve block one side was used for the shutoff inlet, install second sealing washer and solid fixed ring that shutoff portion one side was used for shutoff through-hole chamber passageway. The sealing rings are arranged at two ends of the valve face assembly, the sealing performance of the control valve is ensured under two working states, and the fixing rings and the valve plates are designed to be more firmly connected in structure, so that the working stability is ensured.

Further, the valve rod body is fixedly connected with the piston through threads, and a first spring for elastically connecting the piston with the valve rod valve seat is arranged between the piston and the valve rod valve seat. The first through holes are distributed along the radial direction, a first annular water collecting groove is formed in the position, corresponding to the first through holes, of the outer side of the backflushing valve seat, the first annular water collecting groove is communicated with the liquid inlet and outlet dual-purpose port, a second annular water collecting groove is formed in the position, corresponding to the second through holes, of the outer side of the valve rod valve seat, the second annular water collecting groove is communicated with the sewage discharge port, and a third annular water collecting groove is formed between the liquid pushing hole and the liquid pushing pipeline. Through hole and water catch bowl's design, medium liquid is more smooth at the circulation in-process, and the through hole can realize medium liquid from many scattering circulations, thereby the water catch bowl is concentrated the circulation with the medium liquid of multi-direction through-hole circulation and flows out from required hole, and the recoil speed of recoil control valve is promoted in through hole and water catch bowl's design, improves work efficiency.

Further, the electromagnetic pilot valve comprises a pilot valve body, a valve sleeve component arranged in the pilot valve body, a second spring, a pilot valve rod and an electromagnetic driving mechanism for driving the pilot valve rod to axially move, the pilot valve body is hollow and forms a valve cavity, the pilot valve body is provided with at least three through pipes, the valve sleeve component is hollow and is fixedly arranged in the valve cavity, a middle hole is arranged at a position on the valve sleeve component corresponding to the through pipes, the pilot valve rod is axially and movably arranged in the valve sleeve component, one end of the pilot valve rod, which is far away from the electromagnetic driving mechanism, is elastically connected with the valve sleeve component, a third through hole and a fourth through hole are arranged on the pilot valve rod and distributed along the radial direction of the pilot valve rod, and the third through hole and the fourth through hole respectively correspond to at least two middle holes through the axial movement of the pilot valve rod, the pilot valve rod is provided with a pilot valve through cavity which is axially arranged and communicated with the third through hole and the fourth through hole. When the pilot valve rod moves back and forth, the third through hole and the fourth through hole correspond to two different intermediate holes respectively, the working state I and the working state II are switched, under the two working states, the through holes in the pilot valve rod correspond to different intermediate holes in the valve sleeve component respectively, communication between different through pipes on the valve body is achieved, flowing-in and flowing-out of medium liquid in the liquid pushing cavity are switched, and switching between the working state I and the working state II is achieved due to movement of the pilot valve rod.

Further, the valve housing subassembly includes in proper order the adaptation is in position sleeve, middle cover and the plug in the valve chamber, position sleeve fixed connection in the valve chamber, the position sleeve is put on, is close to electromagnetic drive mechanism's a terminal surface has the wrench hole, middle cover is located between position sleeve and the plug, the plug is located remotely in electromagnetic drive mechanism's one end and with guide valve body threaded connection, form the spring holder in the plug, the second spring adorn in the spring holder, the one end of second spring with the spring holder forms the butt, the other end with the butt is formed to the guide valve pole. The valve sleeve component with the split structure is convenient to produce and install and convenient to replace.

Further, the pilot valve body is provided with three through pipes, each through pipe comprises a first through pipe, a second through pipe and a third through pipe, each middle hole comprises a first middle hole, a second middle hole and a third middle hole, the first through pipe corresponds to the first middle hole, the second through pipe corresponds to the second middle hole, the third through pipe corresponds to the third middle hole, a fourth annular water collecting tank is formed at one end, close to the pilot valve rod, of the first middle hole, a fifth annular water collecting tank is formed at one end, close to the pilot valve rod, of the second middle hole, and a sixth annular water collecting tank is formed at one end, close to the pilot valve rod, of the third middle hole. Through hole and water catch bowl's design, medium liquid is more smooth at the circulation in-process, and the through hole can realize medium liquid from many scattering circulations, thereby the water catch bowl is concentrated the circulation with the medium liquid of multi-direction through-hole circulation and flows out from required hole, and the recoil speed of recoil control valve is promoted in through hole and water catch bowl's design, improves work efficiency.

Further, the inner wall of valve barrel subassembly with first guide sealing washer has been installed to the one side of pilot valve rod contact, the outer wall of valve barrel subassembly with the second guide sealing washer has been installed to the one side of pilot valve body contact, the one end that is close to the pilot valve body outer wall of siphunculus has the step hole, the downthehole third guide sealing washer that is equipped with of step. The setting of sealing washer improves the leakproofness of control valve, improves hydraulic pressure intensity, increases the driving force in the liquid pushing cavity.

Further, the liquid pushing pipeline comprises a liquid pushing pipeline, a liquid pushing pipeline inlet and outlet and a liquid pushing pipeline outlet, the first through pipe is communicated with the liquid pushing pipeline inlet, the second through pipe is communicated with the liquid pushing pipeline outlet, and the third through pipe is communicated with the liquid pushing pipeline outlet. The first through pipe and the liquid pushing pipeline are used for enabling medium liquid to flow into the electromagnetic pilot valve, the second through pipe and the liquid pushing pipeline are used for enabling the medium liquid in the liquid pushing cavity to flow in and out, and the third through pipe and the liquid pushing pipeline are used for enabling the medium liquid which is not used to flow out of the valve.

(III) advantageous effects

Compared with the prior art, the utility model, it has following beneficial effect: the utility model discloses a recoil control valve, through the settlement of recoil structure, the control valve has had recoil cleaning function, improves the operating efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a recoil control valve according to the present invention;

fig. 2 is a schematic rear view of a recoil control valve according to the present invention;

FIG. 3 is a left side view schematic diagram of a recoil control valve of the present invention;

FIG. 4 is a schematic diagram of a structure of a recoil control valve according to the present invention as seen from the right;

FIG. 5 is a schematic diagram of a top view of a recoil control valve of the present invention;

FIG. 6 is a schematic cross-sectional view A-A of FIG. 5 of a control valve body of a recoil control valve of the present invention;

FIG. 7 is a schematic cross-sectional view B-B of FIG. 5 of a control valve body of a recoil control valve of the present invention;

FIG. 8 is a schematic cross-sectional view of a first operating state of a recoil control valve of the present invention;

FIG. 9 is a schematic cross-sectional view of a second operating state of the recoil control valve of the present invention;

fig. 10 is a schematic cross-sectional view of a pilot valve body of a recoil control valve according to the present invention.

1. A control valve body, 11, a valve body through cavity, 111, a recoil valve seat, 1111, a first through hole cavity, 11111, a first through hole, 11112, a first annular water collecting groove, 1112, a second through hole cavity, 11121, a second through hole, 11122, a second annular water collecting groove, 1113, a through hole cavity channel, 1114, a liquid inlet through cavity, 112, a liquid pushing cavity, 113, a liquid pushing hole, 114, a liquid pushing pipeline, 1141, a liquid pushing pipeline, 1142, a liquid inlet and outlet pipeline, 1143, a liquid outlet pipeline, 115, a third annular water collecting groove, 12, a liquid inlet, 13, a liquid inlet and outlet dual-purpose port, 14, a sewage outlet, 2, an electromagnetic pilot valve, 21, a pilot valve body, 210, a valve cavity, 211, a through pipe, 2111, a first through pipe, 2112, a second through pipe, 2113, a third three-way pipe, 22, a valve housing assembly, 221, a middle hole, 2211, a first middle hole, 22110, a fourth annular water collecting groove, 2212, a second middle hole, 22120, a fifth annular water collecting groove, 22130. sixth annular water catch bowl, 2213, third middle hole, 222, locating sleeve, 223, middle sleeve, 224, plug, 2241, spring holder, 23, second spring, 24, pilot valve pole, 241, third through-hole, 242, fourth through-hole, 243, pilot valve lead to the chamber, 25, electromagnetic drive mechanism, 3, piston, 4, valve rod subassembly, 41, the valve rod body, 411, shutoff portion, 42, valve face subassembly, 421, valve block, 422, first sealing washer, 423, second sealing washer, 424, solid fixed ring, 5, valve rod disk seat, 6, first spring.

Detailed Description

As shown in the accompanying drawings, a recoil control valve according to an embodiment of the present invention includes a control valve body 1, an electromagnetic pilot valve 2 connected to the control valve body 1, a piston 3 axially movably mounted in the control valve body 1, a valve rod assembly 4, and a valve rod valve seat 5 fixedly mounted in the control valve body 1 and used for placing the valve rod assembly 4, the control valve body 1 is hollow and forms a valve body through cavity 11, the control valve body 1 has a liquid inlet 12, a dual liquid inlet and outlet port 13, and a sewage outlet 14, the valve rod valve seat 5 is fixedly mounted in the valve body through cavity 11, a recoil valve seat 111 is mounted in the valve body through cavity 11, a first through hole cavity 1111 and a second through hole cavity 1112 are provided in the recoil valve seat 111, the first through hole cavity 1111 has a first through hole 11111, the second through hole cavity 1112 has a second through hole 11121, the dual liquid inlet and outlet port 13 is communicated with the valve body through hole 11111 through the first through hole 11111 and the first through hole 1111, the drain 14 through second through-hole 11121 and second through-hole cavity 1112 with the valve body leads to the chamber 11 intercommunication, first through-hole chamber 1111 with form through-hole chamber passageway 1113 between the second through-hole chamber 1112, valve rod assembly 4 includes the valve rod body 41 and valve face subassembly 42, valve rod body 41 one end forms shutoff portion 411, and the other end passes valve rod disk seat 5 and with piston 3 is connected, piston 3 with valve rod disk seat 5 forms elastic connection, the valve body leads to and has the liquid pushing cavity 112 in the intracavity 11, control valve body 1 have with the liquid pushing hole 113 of liquid pushing cavity 112 intercommunication and the liquid pushing pipeline 114 who feeds through with the liquid pushing hole, liquid pushing pipeline 114 with electromagnetic pilot valve 2 intercommunication, valve face subassembly 42 switches shutoff inlet 12 or through-hole chamber passageway 1113 through the axial displacement of piston 3. The design of above structure realizes two kinds of operating condition: the first working state (as shown in fig. 8) and the second working state (as shown in fig. 9), the valve rod assembly 4 and the piston 3 move in the valve body through cavity 11 along the set direction of the valve rod valve seat 5, and the first working state and the second working state are switched, and the first working state is: under a normal working state, the electromagnetic valve is not electrified, the piston 3 moves in a direction away from the valve rod valve seat 5 under the action of elastic force, the valve face assembly 42 blocks the through hole cavity channel 1113, the liquid inlet 12 is communicated with the liquid inlet and outlet dual-purpose port 13, and medium liquid flows in from the liquid inlet 12 and flows out from the liquid inlet and outlet dual-purpose port 13; and a second working state: under the recoil operating condition, the solenoid valve circular telegram, under the solenoid valve effect, medium liquid gets into push away in the sap cavity 112, promote piston 3, piston 3 overcomes elasticity under the promotion of medium liquid to promote valve stem assembly 4 toward the direction motion of inlet 12, valve stem assembly 4 shutoff the feed liquor leads to the chamber 1114, inlet 12 and business turn over liquid double-purpose mouth 13 do not communicate, business turn over liquid double-purpose mouth 13 with drain 14 communicates, and medium liquid is followed business turn over liquid double-purpose mouth 13 flows in, follows drain 14 flows out, forms recoil blowdown work. The utility model discloses above structural design has realized the inside cleaning work of control valve, and only needs solenoid valve control can switch operating condition, and the solenoid valve only needs to utilize automatically controlled principle control, can realize automatic recoil cleaning work, convenient and fast, and the automation level is high.

The utility model discloses a recoil control valve of further embodiment, the feed liquor leads to the chamber 1114 has in the recoil disk seat 111, the feed liquor lead to the chamber 1114 with inlet 12 intercommunication and with first through-hole chamber 1111 intercommunication, valve face subassembly 42 includes valve block 421, installs valve block 421 one side is used for the first sealing washer 422 of shutoff inlet 12, installs second sealing washer 423 and the solid fixed ring 424 that are used for shutoff through-hole chamber passageway 1113 in shutoff portion 411 one side. All set up the sealing washer with both ends in the valve face subassembly 42, under two kinds of operating condition, all ensure the leakproofness of control valve, the design of solid fixed ring 424 and valve block 421, the structure firm in connection more guarantees the stability of work.

The utility model discloses a further embodiment's a recoil control valve, the valve rod body of rod 41 with piston 3 is fixed through threaded connection, piston 3 with install between the valve rod disk seat 5 this piston 3 and valve rod disk seat 5 elastic connection's first spring 6. The first through holes 11111 are distributed along the radial direction, a first annular water collecting groove 11112 is formed in the position, corresponding to the first through holes, outside the recoil valve seat 111, the first annular water collecting groove 11112 is communicated with the liquid inlet and outlet dual-purpose port 13, a second annular water collecting groove 11122 is formed in the position, corresponding to the second through holes 11121, outside the valve rod valve seat 5, the second annular water collecting groove 11122 is communicated with the sewage outlet 14, and a third annular water collecting groove 115 is arranged between the liquid pushing hole 113 and the liquid pushing pipeline 114. Through hole and water catch bowl's design, medium liquid is more smooth at the circulation in-process, and the through hole can realize medium liquid from many scattering circulations, thereby the water catch bowl is concentrated the circulation with the medium liquid of multi-direction through-hole circulation and flows out from required hole, and the recoil speed of recoil control valve is promoted in through hole and water catch bowl's design, improves work efficiency.

The utility model discloses a recoil control valve of further embodiment, electromagnetic pilot valve 2 includes pilot valve body 21, installs valve barrel subassembly 22, second spring 23, pilot valve rod 24 and is used for driving pilot valve rod 24 axial displacement's electromagnetic drive mechanism 25 in pilot valve body 21, pilot valve body 21 is the cavity form and forms valve pocket 210, pilot valve body 21 has at least three siphunculus 211, valve barrel subassembly 22 is the cavity form and fixes and install in valve pocket 210, the position on valve barrel subassembly 22 corresponding with siphunculus 211 has intermediate hole 221, pilot valve rod 24 axial activity install in valve barrel subassembly 22, on pilot valve rod 24, remote in one end of electromagnetic drive mechanism 25 with valve barrel subassembly 22 forms elastic connection, have on pilot valve rod 24 along the radial direction distribution's of pilot valve rod 24 third through-hole 241 and fourth through-hole 242, the third through hole 241 and the fourth through hole 242 correspond to at least two middle holes 221 respectively by the axial movement of the pilot valve rod 24, and the pilot valve rod 24 has a pilot valve through cavity 243 axially opened and communicated with the third through hole 241 and the fourth through hole 242. When the pilot valve rod 24 moves back and forth, the third through hole 241 and the fourth through hole 242 correspond to two different intermediate holes 221 respectively, and switch between the first working state and the second working state, and in the two working states, the through holes on the pilot valve rod 24 correspond to different intermediate holes 221 on the valve sleeve assembly 22 respectively, so that communication between different through pipes 211 on the valve body is realized, inflow and outflow of the medium liquid in the liquid pushing cavity 112 are switched, and switching between the first working state and the second working state is realized by movement of the pilot valve rod 24.

The utility model discloses a recoil control valve of further embodiment, valve barrel subassembly 22 is in including adaptation in proper order position sleeve 222, middle cover 223 and plug 224 in the valve pocket 210, position sleeve 222 fixed connection in the valve pocket 12, on the position sleeve 222, be close to electromagnetic drive mechanism 25's a terminal surface has the wrench hole, middle cover 223 is located between position sleeve 222 and plug 224, plug 224 is located remotely in electromagnetic drive mechanism 25's one end and with pilot valve body 21 threaded connection, form spring holder 2241 in the plug 224, second spring 23 adorn in the spring holder 2241, the one end of second spring 23 with spring holder 2241 forms the butt, the other end with pilot valve rod 24 forms the butt. The valve sleeve component 22 with a split structure is convenient to produce and install and convenient to replace.

The utility model discloses a recoil control valve of further concrete embodiment, pilot valve body 21 has three siphunculuss 211, siphunculuss 211 includes 211, second siphunculus 2112 and third pipe 2113, well 221 includes well 2211 in the middle of first, well 2212 in the middle of the second and well 2213 in the middle of the third, 211 corresponds with well 2211 in the middle of the first, well 2212 corresponds in the middle of the second siphunculus 2112 and the second, well 2213 corresponds in the middle of the third and well 2213 in the middle of the third, well 2211 in the middle of the first is close to pilot valve rod 24's one end and is formed fourth annular water catch bowl 22110, well 2212 in the middle of the second is close to pilot valve rod 24's one end and is formed fifth annular water catch bowl 22120, well 2213 in the middle of the third is close to pilot valve rod 24's one end and is formed sixth annular water catch bowl 22130. Through hole and water catch bowl's design, medium liquid is more smooth at the circulation in-process, and the through hole can realize medium liquid from many scattering circulations, thereby the water catch bowl is concentrated the circulation with the medium liquid of multi-direction through-hole circulation and flows out from required hole, and the recoil speed of recoil control valve is promoted in through hole and water catch bowl's design, improves work efficiency.

The utility model discloses a recoil control valve of further embodiment, the inner wall of valve barrel subassembly 22 with first guide's sealing washer has been installed to the one side of guide's valve rod 24 contact, the outer wall of valve barrel subassembly 22 with the second guide's sealing washer has been installed to the one side of guide's valve body 21 contact, the one end that is close to guide's valve body 21 outer wall of siphunculus 211 has the step hole, the downthehole third guide's sealing washer that is equipped with of step hole. The sealing performance of the control valve is improved, the hydraulic pressure is improved, and the pushing force in the liquid pushing cavity 112 is increased due to the arrangement of the sealing ring.

The utility model discloses a recoil control valve of further embodiment, liquid pushing pipe 114 is including advancing liquid pushing pipe 1141, business turn over liquid pushing pipe 1142 and go out liquid pushing pipe 1143, 211 th with advance liquid pushing pipe 1141 intercommunication, second siphunculus 2112 with business turn over liquid pushing pipe 1142 intercommunication, third pipe 2113 with go out liquid pushing pipe 1143 intercommunication. The 211 th liquid pushing pipe 1141 and the pushing liquid inlet pipe 1141 are used for flowing medium liquid into the electromagnetic pilot valve 2, the second pipe 2112 and the pushing liquid inlet and outlet pipe 1142 are used for flowing in and flowing out medium liquid in the pushing liquid cavity 112, and the third pipe 2113 and the pushing liquid outlet pipe 1143 are used for flowing out unused medium liquid outside the valve.

The utility model discloses a recoil control valve, through the settlement of recoil structure, the control valve has had recoil cleaning function, improves the operating efficiency.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims (9)

1. A recoil control valve characterized by: the control valve body is hollow and forms a valve body through cavity, the control valve body is provided with a liquid inlet, a liquid inlet and outlet dual-purpose port and a sewage discharge port which are communicated with each other, the valve rod valve seat is fixedly arranged in the valve body through cavity, a backflushing valve seat is arranged in the backflushing valve seat, a first through hole cavity and a second through hole cavity are arranged in the backflushing valve seat, the first through hole cavity is provided with a first through hole, the second through hole cavity is provided with a second through hole, the liquid inlet and outlet dual-purpose port is communicated with the valve body through cavity through the first through hole and the first through hole cavity, and the sewage discharge port is communicated with the valve body through cavity through the second through hole and the second through hole cavity, the valve body is provided with a liquid pushing hole communicated with the liquid pushing cavity and a liquid pushing pipeline communicated with the liquid pushing hole, the liquid pushing pipeline is communicated with the electromagnetic pilot valve, and the valve face assembly moves through the axial movement of the piston.

2. A recoil control valve according to claim 1, wherein: the back flush valve seat is internally provided with a liquid inlet through cavity which is communicated with the liquid inlet and communicated with the first through hole cavity, the valve face component comprises a valve block, a first sealing ring used for plugging the liquid inlet on one side of the valve block, a second sealing ring used for plugging a through hole cavity channel on one side of the plugging part and a fixing ring.

3. A recoil control valve according to claim 1, wherein: the valve rod body is fixedly connected with the piston through threads, and a first spring for elastically connecting the piston with the valve rod valve seat is arranged between the piston and the valve rod valve seat.

4. A recoil control valve according to claim 1, wherein: the first through holes are distributed along the radial direction, a first annular water collecting groove is formed in the position, corresponding to the first through holes, of the outer side of the backflushing valve seat, the first annular water collecting groove is communicated with the liquid inlet and outlet dual-purpose port, a second annular water collecting groove is formed in the position, corresponding to the second through holes, of the outer side of the valve rod valve seat, the second annular water collecting groove is communicated with the sewage discharge port, and a third annular water collecting groove is formed between the liquid pushing hole and the liquid pushing pipeline.

5. A recoil control valve according to any one of claims 1 to 4, wherein: the electromagnetic pilot valve comprises a pilot valve body, a valve sleeve component arranged in the pilot valve body, a second spring, a pilot valve rod and an electromagnetic driving mechanism for driving the pilot valve rod to axially move, wherein the pilot valve body is hollow and forms a valve cavity, the pilot valve body is provided with at least three through pipes, the valve sleeve component is hollow and is fixedly arranged in the valve cavity, a middle hole is arranged at a position on the valve sleeve component corresponding to the through pipes, the pilot valve rod is axially and movably arranged in the valve sleeve component, one end of the pilot valve rod, which is far away from the electromagnetic driving mechanism, is elastically connected with the valve sleeve component, a third through hole and a fourth through hole are arranged on the pilot valve rod and distributed along the radial direction of the pilot valve rod, and the third through hole and the fourth through hole respectively correspond to at least two middle holes through the axial movement of the pilot valve rod, the pilot valve rod is provided with a pilot valve through cavity which is axially arranged and communicated with the third through hole and the fourth through hole.

6. A recoil control valve according to claim 5, wherein: the valve barrel subassembly includes in proper order the adaptation is in position sleeve, middle cover and the plug in the valve chamber, position sleeve fixed connection in the valve chamber, the position sleeve is put on, is close to electromagnetic drive mechanism's a terminal surface has the wrench hole, middle cover is located between position sleeve and the plug, the plug is located remotely in electromagnetic drive mechanism's one end and with pilot valve body threaded connection, form the spring holder in the plug, the second spring adorn in the spring holder, the one end of second spring with the spring holder forms the butt, the other end with the pilot valve rod shape becomes the butt.

7. A recoil control valve according to claim 6, wherein: the pilot valve body is provided with three through pipes, each through pipe comprises a first through pipe, a second through pipe and a third through pipe, the middle holes comprise a first middle hole, a second middle hole and a third middle hole, the first through pipe corresponds to the first middle hole, the second through pipe corresponds to the second middle hole, the third through pipe corresponds to the third middle hole, a fourth annular water collecting tank is formed at one end, close to the pilot valve rod, of the first middle hole, a fifth annular water collecting tank is formed at one end, close to the pilot valve rod, of the second middle hole, and a sixth annular water collecting tank is formed at one end, close to the pilot valve rod, of the third middle hole.

8. A recoil control valve according to claim 7, wherein: the inner wall of valve barrel subassembly with first guide sealing washer has been installed to the one side of pilot valve rod contact, the outer wall of valve barrel subassembly with the second guide sealing washer has been installed to the one side of pilot valve body contact, the one end that is close to the pilot valve body outer wall of siphunculus has the step hole, the downthehole third guide sealing washer that is equipped with of step.

9. A recoil control valve according to claim 8, wherein: the liquid pushing pipeline comprises a liquid pushing pipeline, a liquid pushing pipeline inlet and outlet and a liquid pushing pipeline outlet, the first through pipe is communicated with the liquid pushing pipeline inlet and outlet, the second through pipe is communicated with the liquid pushing pipeline inlet and outlet, and the third through pipe is communicated with the liquid pushing pipeline outlet.

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