Electric three-way stop type regulating valve

Abstract

The present invention relates to the technical field of regulating valves, and discloses an electric three-way stop-type regulating valve, comprising a valve body, a liquid inlet, a first liquid outlet and a second liquid outlet, and also comprising a stop unit and an electric drive part; a sliding cavity which is respectively connected to the liquid inlet, the first liquid outlet and the second liquid outlet is opened in the valve body, and the stop unit is slidably arranged in the sliding cavity; when the stop unit slides in the first position area, the minimum first flow cross-section between the liquid inlet and the first liquid outlet and the minimum second flow cross-section between the liquid inlet and the second liquid outlet will be changed at the same time; when the minimum flow cross-section is zero, the corresponding channel will be closed, otherwise it will be opened, and its instantaneous liquid flow will also increase with the increase of the minimum flow cross-section, so the first liquid outlet and the second liquid outlet can be quickly distributed or started and stopped at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of regulating valves, in particular to an electric three-way stop-type regulating valve. Background Art

[0002] The three-way valve is a control component in the fluid conveying system. It has the functions of shutoff, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow. The three-way valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media.

[0003] The existing electric valves and solenoid valves still have some technical defects, which lead to unstable valve operation, inconvenient installation and use, and high cost. For example, the Chinese patent with patent number ZL201210307171.x discloses a "switch signal displacement feedback electric pilot valve", which includes a valve cavity flow channel, a valve seat composed of a valve core, a valve wall, and a valve cover, as well as a displacement sensor and a pilot drive mechanism. Although it realizes automatic valve opening and state feedback, it can only be cut off in one direction and cannot realize a three-way switch. It is inconvenient to use and usually needs to be installed on each side of the branch pipe. The cost is high, and the internal channel structure is complex, the pressure loss is large, and the passability is poor.

[0004] Therefore, most of the three-way valves currently use one switch to open and shut off the two drain outlets at the same time. The three-way stop valve opens the medium to enter from the A port and flows out through the B port. When the bypass requires the medium to flow in, the actuator is opened, the valve core is switched, and the medium enters from the A port and flows out from the C port. When the pipeline does not require the medium to flow in, the actuator is opened. Therefore, it is difficult to adjust the two outlets at the same time. Therefore, when the pipelines on both sides of the three-way valve require different flow rates, it cannot meet the use requirements and cannot be used flexibly. Summary of the invention

[0005] The purpose of the present invention is to provide an electric three-way stop-type regulating valve to solve the following technical problems:

[0006] How to provide a stop-type regulating valve capable of simultaneously regulating the liquid flow rate at two liquid outlet ends.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] An electric three-way stop-type regulating valve comprises a valve body, a liquid inlet, a first liquid outlet, and a second liquid outlet, and also comprises a stop unit and an electric drive unit;

[0009] The valve body is provided with a sliding cavity which is respectively connected with the liquid inlet portion and the first liquid outlet portion and the second liquid outlet portion, and the cut-off unit is slidably arranged in the sliding cavity; the electric drive unit is arranged on the valve body, and is used to drive the cut-off unit to slide along the sliding cavity;

[0010] When the cut-off unit slides to the first position area, the liquid inlet is connected to the first liquid outlet, and the liquid inlet is disconnected from the second liquid outlet;

[0011] When the cut-off unit slides to the second position area, the liquid inlet is connected to the second liquid outlet, and the liquid inlet is disconnected from the first liquid outlet.

[0012] Through the above technical scheme, the present invention can drive the cut-off unit to slide in the sliding cavity through the electric drive unit to achieve rapid switching of the liquid circuit or liquid flow control; for example, when the cut-off unit slides in the first position area, the minimum first flow cross-section between the liquid inlet and the first liquid outlet and the minimum second flow cross-section between the liquid inlet and the second liquid outlet will be changed at the same time; when the minimum flow cross-section is zero, the corresponding channel will be closed, otherwise it will be opened, and its instantaneous liquid flow will also increase with the increase of the minimum flow cross-section, so the first liquid outlet and the second liquid outlet can be quickly distributed or started and stopped at the same time.

[0013] As a further solution of the present invention: the liquid inlet portion, the first liquid outlet portion and the second liquid outlet portion are respectively provided with a liquid inlet channel, a first channel and a second channel communicating with the sliding cavity;

[0014] The cut-off unit comprises a cut-off column and a flow slot opened along the length direction of the side surface of the cut-off column;

[0015] A portion of the circulation groove close to the liquid inlet channel overlaps with a portion of the outlet end of the liquid inlet channel, and a port of the circulation groove away from the liquid inlet channel is flush with a solid surface of the second liquid outlet portion.

[0016] Through the above technical scheme, when the cut-off unit slides to the first position area, the liquid entering the valve body from the liquid inlet channel can be discharged outward from the first channel after passing through the sliding cavity. When the cut-off unit slides to the second position area, the liquid entering the valve body from the liquid inlet channel can enter the circulation groove through the non-overlapping part of the circulation groove and the outlet end of the liquid inlet channel, and then be discharged outward from the second channel. In this way, the first liquid outlet part and the second liquid outlet part can be quickly distributed or started and stopped by adjusting the distance between the liquid inlet channel and the cut-off column and the overlapping area between the circulation groove and the outlet end of the liquid inlet channel, which is stable and efficient.

[0017] As a further solution of the present invention: the cut-off unit further comprises a push convex ring, a push spring and a magnetic block; the push convex ring is fixed to one end of the cut-off column, and the magnetic block is arranged in the cut-off column; the push spring is arranged between the push convex ring and the entity forming the sliding cavity;

[0018] Under normal conditions, the push spring is in a compressed state, pushing the end of the cut-off column close to the first liquid outlet portion to press against the liquid inlet end of the first channel;

[0019] The electric drive unit generates magnetic force after being energized, and drives the cut-off column to slide in the sliding cavity through the magnetic force.

[0020] Through the above technical scheme, it can be designed that under normal conditions, the push spring drives the cut-off column to close the first channel. When liquid enters the valve body from the liquid inlet channel, it is preferentially discharged outward through the second channel, and the first channel is closed. At this time, if the first channel needs to be opened, the electric drive unit can be energized to generate magnetic force, and then the cut-off column is remotely and contactlessly driven for sliding by the magnetic force, which reduces the direct demand for sealing, reduces the overall complexity of the device, and facilitates later modification. For example, the position of the push spring is changed and set at the end of the cut-off column away from the second channel. Under normal conditions, the push spring is in a compressed state, pushing the cut-off column to close the second channel and open the first channel. At this time, it is only necessary to change the direction of the magnetic poles of the magnetic force generated by the electric drive unit to continue to control the sliding drive of the cut-off column.

[0021] As a further solution of the present invention: the electric drive unit includes a sealed housing sealed on the valve body, an electromagnetic coil module and a wireless controller arranged in the sealed housing;

[0022] The wireless controller is used to receive a wireless control signal to control the forward and reverse on and off power of the electromagnetic coil module, thereby generating an electromagnetic field for slidingly driving the magnetic block.

[0023] Through the above technical scheme, the existence of the sealed shell can protect the electromagnetic coil module, and the positive and negative energization of the electromagnetic coil module can change the direction of its sliding driving force on the cut-off column. The magnitude of the energized current of the electromagnetic coil module can be changed to achieve on-off or cooperate with the push spring to achieve simultaneous flow control of the first channel and the second channel.

[0024] As a further solution of the present invention: the cut-off unit further comprises a first rubber and a second rubber respectively arranged at two ends of the cut-off column; the first rubber and the second rubber respectively match the channel shapes of the first channel and the second channel.

[0025] Through the above technical solution, taking the first rubber as an example, the first rubber can provide a certain degree of sealing when inserted into the first channel, thereby improving the waterproof sealing of the valve and avoiding leakage caused by instantaneous increase in water pressure due to instantaneous closing.

[0026] As a further solution of the present invention: the cut-off column comprises a first part, a second part and a telescopic control part;

[0027] The first part is slidably connected to the second part, and the telescopic control part drives the first part and the second part to slide relative to each other.

[0028] Through the above technical solution, when the first part and the second part move toward each other, the overlapping area between the flow groove and the outlet end of the liquid inlet channel and the distance between the cut-off column and the second channel will change, so that the maximum flow rate of the second channel can be adjusted, thereby improving the application flexibility of the present invention and the scope of application; when the first part and the second part move away from each other, the first channel and the second channel can be blocked to a certain extent at the same time, completing the closure of all channels, realizing the flexible use of the valve, and improving the sealing reliability of the valve when the liquid inlet channel is closed.

[0029] As a further solution of the present invention: the telescopic control part includes a sliding protrusion, a sliding groove, a driving motor and a driving screw; the sliding protrusion is fixed to one end of the first part close to the second part, and the sliding groove is provided at one end of the second part close to the first part;

[0030] The driving motor is fixed in the sliding protrusion, and the driving screw is coaxially fixed with the output shaft of the driving motor and then passes through the sliding protrusion and is threadedly connected with the groove bottom of the sliding groove.

[0031] Through the above technical solution, the cross-section of the sliding protrusion can be selected to be polygonal, which can prevent the first part from rotating relative to the second part, and when the driving screw rotates, it can drive the first part and the second part to generate relative sliding displacement.

[0032] As a further solution of the present invention: a sealing ring groove is formed at one end of the first part close to the second part, and a sealing ring plate matching the sealing ring groove is provided at one end of the second part close to the first part.

[0033] Through the above technical solution, the cooperation between the sealing ring plate and the sealing ring groove can avoid water intrusion when the liquid in the valve body produces relative displacement between the first part and the second part, thereby endangering the normal operation of the drive motor.

[0034] As a further solution of the present invention: a waterproof ring groove is provided on the sealing ring plate, a waterproof layer is arranged in the waterproof ring groove, the waterproof layer is tightly pressed against the sealing ring groove, and the waterproof layer expands when exposed to water.

[0035] Through the above technical solution, once some liquid enters the sealing ring groove, the waterproof layer will swell when it comes into contact with water to increase the sealing performance, thereby improving the waterproof effect and improving product reliability.

[0036] Beneficial effects of the present invention:

[0037] (1) The present invention can drive the cut-off unit to slide in the sliding cavity through the electric drive unit to achieve rapid switching of the liquid path or liquid flow control; for example, when the cut-off unit slides in the first position area, the minimum first flow cross section between the liquid inlet and the first liquid outlet and the minimum second flow cross section between the liquid inlet and the second liquid outlet will be changed at the same time; when the minimum flow cross section is zero, the corresponding channel will be closed, otherwise it will be opened, and its instantaneous liquid flow will also increase with the increase of the minimum flow cross section, so the first liquid outlet and the second liquid outlet can be quickly distributed or started and stopped at the same time;

[0038] (2) When the cut-off unit slides to the first position area, the liquid entering the valve body from the liquid inlet channel can be discharged from the first channel after passing through the sliding cavity. When the cut-off unit slides to the second position area, the liquid entering the valve body from the liquid inlet channel can enter the flow groove through the non-overlapping portion of the flow groove and the outlet end of the liquid inlet channel, and then be discharged from the second channel. In this way, the flow distribution or start-stop of the first liquid outlet and the second liquid outlet can be quickly performed by adjusting the distance between the liquid inlet channel and the cut-off column and the overlapping area of ​​the outlet end of the flow groove and the liquid inlet channel, which is stable and efficient.

[0039] (3) The present invention can be designed so that under normal conditions, the push spring drives the stop column to close the first channel. When liquid enters the valve body from the liquid inlet channel, it is preferentially discharged outward through the second channel, and the first channel is closed. At this time, if the first channel needs to be opened, the electric drive unit can be energized to generate magnetic force, and then the stop column is remotely non-contacted and slidably driven by the magnetic force, which reduces the direct demand for sealing, reduces the overall complexity of the device, and is convenient for later modification. For example, the position of the push spring is changed and set at the end of the stop column away from the second channel. Under normal conditions, the push spring is in a compressed state, pushing the stop column to close the second channel and open the first channel. At this time, it is only necessary to change the direction of the magnetic poles of the magnetic force generated by the electric drive unit to continue to slide and control the stop column;

[0040] (4) The existence of the sealed shell can protect the electromagnetic coil module. The positive and negative energization of the electromagnetic coil module can change the direction of the sliding driving force on the cut-off column. The magnitude of the energized current of the electromagnetic coil module can be changed to achieve on-off or cooperate with the push spring to achieve simultaneous flow control of the first channel and the second channel;

[0041] (5) When the first part and the second part move toward each other, the overlapping area between the flow groove and the outlet end of the liquid inlet channel and the distance between the cut-off column and the second channel will change, so that the maximum flow rate of the second channel can be adjusted, thereby improving the application flexibility of the present invention and the scope of application; when the first part and the second part move away from each other, the first channel and the second channel can be blocked to a certain extent at the same time, completing the closure of all channels, realizing the flexible use of the valve, and improving the sealing reliability of the valve when the liquid inlet channel is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention will be further described below in conjunction with the accompanying drawings.

[0043] Figure 1 It is a cross-sectional structural diagram of the first embodiment of the present invention;

[0044] Figure 2 is a related structural diagram of a cut-off column in Embodiment 1 of the present invention;

[0045] Figure 3 It is a cross-sectional structural diagram of the second embodiment of the present invention;

[0046] Figure 4 It is a cross-sectional structural diagram of the third embodiment of the present invention;

[0047] Figure 5 for Figure 4 Magnified view of section A.

[0048] Description of the drawings: 1. valve body; 11. sliding cavity; 2. liquid inlet; 21. liquid inlet channel; 3. first liquid outlet; 31. first channel; 4. second liquid outlet; 41. second channel; 51. stop column; 511. first part; 512. second part; 513. sliding protrusion; 514. driving motor; 515. driving screw; 516. sliding groove; 517. sealing ring groove; 518. sealing ring plate; 519. waterproof ring groove; 52. circulation groove; 53. push protrusion; 54. push spring; 55. magnetic block; 56. first rubber; 57. second rubber; 6. electric drive unit; 7. waterproof layer. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] See also Figure 1 and Figure 2 As shown, the electric three-way stop-type regulating valve disclosed in the first embodiment of the present invention includes a valve body 1, a liquid inlet 2, a first liquid outlet 3, and a second liquid outlet 4, and also includes a stop unit and an electric drive unit 6;

[0051] A sliding cavity 11 is provided in the valve body 1 and is connected to the liquid inlet 2, the first liquid outlet 3 and the second liquid outlet 4 respectively. The cut-off unit is slidably arranged in the sliding cavity 11. The electric drive unit 6 is arranged on the valve body 1 and is used to drive the cut-off unit to slide along the sliding cavity 11.

[0052] When the cut-off unit slides to the first position area, the liquid inlet 2 is connected to the first liquid outlet 3, and the liquid inlet 2 is disconnected from the second liquid outlet 4;

[0053] When the cut-off unit slides to the second position area, the liquid inlet 2 is connected with the second liquid outlet 4, and the liquid inlet 2 is disconnected from the first liquid outlet 3.

[0054] Through the above technical scheme, the present invention can drive the cut-off unit to slide in the sliding cavity 11 through the electric drive unit 6 to realize rapid switching of the liquid circuit or liquid flow control; for example, when the cut-off unit slides in the first position area, the minimum first flow cross-section between the liquid inlet 2 and the first liquid outlet 3 and the minimum second flow cross-section between the liquid inlet 2 and the second liquid outlet 4 will be changed at the same time; when the minimum flow cross-section is zero, the corresponding channel will be closed, otherwise it will be opened, and its instantaneous liquid flow will also increase with the increase of the minimum flow cross-section, so the first liquid outlet 3 and the second liquid outlet 4 can be quickly distributed or started and stopped at the same time.

[0055] As a further solution of the present invention: the liquid inlet portion 2, the first liquid outlet portion 3 and the second liquid outlet portion 4 are respectively provided with a liquid inlet channel 21, a first channel 31 and a second channel 41 communicating with the sliding cavity 11;

[0056] The cut-off unit includes a cut-off column 51 and a flow slot 52 opened along the length direction of the side surface of the cut-off column 51;

[0057] The portion of the circulation groove 52 close to the liquid inlet channel 21 overlaps with the outlet end of the liquid inlet channel 21 , and the end of the circulation groove 52 away from the liquid inlet channel 21 is flush with the solid surface of the second liquid outlet portion 4 .

[0058] Through the above technical scheme, when the cut-off unit slides to the first position area, the liquid entering the valve body 1 from the liquid inlet channel 21 can be discharged outward from the first channel 31 after passing through the sliding cavity 11. When the cut-off unit slides to the second position area, the liquid entering the valve body 1 from the liquid inlet channel 21 can enter the circulation groove 52 through the non-overlapping part of the circulation groove 52 and the outlet end of the liquid inlet channel 21, and then be discharged outward from the second channel 41. In this way, the first liquid outlet 3 and the second liquid outlet 4 can be quickly distributed or started and stopped by adjusting the distance between the liquid inlet channel 21 and the cut-off column 51 and the overlapping area between the circulation groove 52 and the outlet end of the liquid inlet channel 21, which is stable and efficient.

[0059] As a further solution of the present invention, the cut-off unit further comprises a push convex ring 53, a push spring 54 and a magnetic block 55; the push convex ring 53 is fixed to one end of the cut-off column 51, and the magnetic block 55 is arranged in the cut-off column 51; the push spring 54 is arranged between the push convex ring 53 and the entity forming the sliding cavity 11;

[0060] Under normal conditions, the push spring 54 is in a compressed state, pushing the end of the cut-off column 51 close to the first liquid outlet 3 to be tightly pressed against the liquid inlet end of the first channel 31;

[0061] When the electric drive unit 6 is powered on, a magnetic force is generated, and the cut-off column 51 is driven to slide in the sliding cavity 11 by the magnetic force.

[0062] Through the above technical scheme, it can be designed that under normal conditions, the push spring 54 drives the cut-off column 51 to close the first channel 31. When liquid enters the valve body 1 from the liquid inlet channel 21, it is preferentially discharged outward through the second channel 41, and the first channel 31 is closed. At this time, if it is necessary to open the first channel 31, the electric drive unit 6 can be energized to generate magnetic force, and then the cut-off column 51 is remotely and non-contactly driven for sliding by the magnetic force, which reduces the direct demand for sealing, reduces the overall complexity of the device, and facilitates later modification. For example, the position of the push spring 54 is changed and it is set at the end of the cut-off column 51 away from the second channel 41. Under normal conditions, the push spring 54 is in a compressed state, pushing the cut-off column 51 to close the second channel 41 and open the first channel 31. At this time, it is only necessary to change the magnetic pole direction of the magnetic force generated by the electric drive unit 6 to continue to control the sliding drive of the cut-off column 51.

[0063] As a further solution of the present invention: the electric drive unit 6 includes a sealed housing sealed on the valve body 1, an electromagnetic coil module and a wireless controller arranged in the sealed housing;

[0064] The wireless controller is used to receive the wireless control signal to control the electromagnetic coil module to be on and off, thereby generating an electromagnetic field for driving the magnetic block 55 to slide.

[0065] Through the above technical scheme, the existence of the sealed shell can protect the electromagnetic coil module, and the positive and negative energization of the electromagnetic coil module can change the direction of its sliding driving force on the cut-off column 51. The magnitude of the energized current of the electromagnetic coil module can be changed to achieve on and off or cooperate with the push spring 54 to achieve simultaneous flow control of the first channel 31 and the second channel 41.

[0066] As a further solution of the present invention, the cut-off unit further comprises a first rubber 56 and a second rubber 57 respectively arranged at two ends of the cut-off column 51 ; the first rubber 56 and the second rubber 57 respectively match the channel shapes of the first channel 31 and the second channel 41 .

[0067] Through the above technical solution, taking the first rubber 56 as an example, the first rubber 56 can provide a certain degree of sealing when inserted into the first channel 31, thereby improving the waterproof sealing of the valve and avoiding leakage caused by instantaneous closing due to instantaneous increase in water pressure.

[0068] As the second embodiment disclosed in the present invention, Figure 3 As shown, the cut-off column 51 includes a first portion 511, a second portion 512 and a telescopic control portion;

[0069] The first part 511 is slidably connected to the second part 512 , and the telescopic control part drives the first part 511 and the second part 512 to slide relative to each other.

[0070] Through the above technical scheme, when the first part 511 and the second part 512 move toward each other, the overlapping area between the flow groove 52 and the outlet end of the liquid inlet channel 21 and the distance between the cut-off column 51 and the second channel 41 will be changed, so that the maximum flow rate of the second channel 41 can be adjusted, thereby improving the application flexibility of the present invention and the scope of application; when the first part 511 and the second part 512 move away from each other, the first channel 31 and the second channel 41 can be blocked to a certain extent at the same time, completing the closure of all channels, realizing the flexible use of the valve, and improving the sealing reliability of the valve when the liquid inlet channel 21 is closed.

[0071] As a further solution of the present invention, the telescopic control part includes a sliding protrusion 513, a sliding groove 516, a driving motor 514 and a driving screw 515; the sliding protrusion 513 is fixed to one end of the first part 511 close to the second part 512, and the sliding groove 516 is opened at one end of the second part 512 close to the first part 511;

[0072] The driving motor 514 is fixed in the sliding protrusion 513 , and the driving screw 515 is coaxially fixed with the output shaft of the driving motor 514 and then passes through the sliding protrusion 513 and is threadedly connected to the bottom of the sliding groove 516 .

[0073] Through the above technical solution, the cross-section of the sliding protrusion 513 can be selected as a polygon, which can prevent the first part 511 from rotating relative to the second part 512. When the driving screw 515 rotates, it can drive the first part 511 and the second part 512 to generate relative sliding displacement.

[0074] As the third embodiment disclosed in the present invention, Figure 4 and Figure 5 As shown, a sealing ring groove 517 is provided at one end of the first part 511 close to the second part 512, and a sealing ring plate 518 matching the sealing ring groove 517 is provided at one end of the second part 512 close to the first part 511. The cooperation between the sealing ring plate 518 and the sealing ring groove 517 can prevent the liquid in the valve body 1 from entering the valve body 1 when the first part 511 and the second part 512 are relatively displaced, thereby endangering the normal operation of the driving motor 514.

[0075] In addition, a waterproof ring groove 519 is opened on the sealing ring plate 518, and a waterproof layer 7 is arranged in the waterproof ring groove 519. The waterproof layer 7 is tightly pressed against the sealing ring groove 517. The waterproof layer 7 expands when it comes into contact with water. Therefore, once some liquid enters the sealing ring groove 517, the waterproof layer 7 expands when it comes into contact with water to increase the sealing performance, thereby improving the waterproof effect and improving the product reliability.

[0076] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An electric three-way stop-type regulating valve, comprising a valve body (1), a liquid inlet (2), a first liquid outlet (3) and a second liquid outlet (4), characterized in that: It also includes a cut-off unit and an electric drive unit (6); The valve body (1) is provided with a sliding cavity (11) which is respectively connected to the liquid inlet portion (2) and the first liquid outlet portion (3) and the second liquid outlet portion (4); the cut-off unit is slidably arranged in the sliding cavity (11); the electric drive unit (6) is arranged on the valve body (1) and is used to drive the cut-off unit to slide along the sliding cavity (11); When the cut-off unit slides to the first position area, the liquid inlet (2) is connected to the first liquid outlet (3), and the liquid inlet (2) is disconnected from the second liquid outlet (4); When the cut-off unit slides to the second position area, the liquid inlet (2) is connected to the second liquid outlet (4), and the liquid inlet (2) is disconnected from the first liquid outlet (3); The liquid inlet portion (2), the first liquid outlet portion (3) and the second liquid outlet portion (4) are respectively provided with a liquid inlet channel (21), a first channel (31) and a second channel (41) which are communicated with the sliding cavity (11); The cut-off unit comprises a cut-off column (51) and a flow groove (52) opened along the length direction of the side surface of the cut-off column (51); The portion of the circulation groove (52) close to the liquid inlet channel (21) overlaps with the outlet end portion of the liquid inlet channel (21), and the end of the circulation groove (52) away from the liquid inlet channel (21) is flush with the solid surface of the second liquid outlet portion (4); The cut-off unit further comprises a push convex ring (53), a push spring (54) and a magnetic block (55); the push convex ring (53) is fixed to one end of the cut-off column (51), and the magnetic block (55) is arranged in the cut-off column (51); the push spring (54) is arranged between the push convex ring (53) and the entity forming the sliding cavity (11); In a normal state, the push spring (54) is in a compressed state, pushing the end of the cut-off column (51) close to the first liquid outlet (3) to be in close contact with the liquid inlet end of the first channel (31); The electric drive unit (6) generates magnetic force when energized, and drives the cut-off column (51) to slide in the sliding cavity (11) through the magnetic force.

2. The electric three-way stop-type regulating valve according to claim 1, characterized in that: The electric drive unit (6) comprises a sealed housing sealed on the valve body (1), an electromagnetic coil module and a wireless controller arranged in the sealed housing; The wireless controller is used to receive a wireless control signal to control the forward and reverse power on and off of the electromagnetic coil module, thereby generating an electromagnetic field for slidingly driving the magnetic block (55).

3. The electric three-way stop-type regulating valve according to claim 2, characterized in that: The cut-off unit further comprises a first rubber (56) and a second rubber (57) respectively arranged at two ends of the cut-off column (51); the first rubber (56) and the second rubber (57) respectively match the channel shapes of the first channel (31) and the second channel (41).

4. The electric three-way stop-type regulating valve according to claim 1, characterized in that: The cut-off column (51) comprises a first part (511), a second part (512) and a telescopic control part; The first part (511) is slidably connected to the second part (512), and the telescopic control part drives the first part (511) and the second part (512) to perform relative sliding movement.

5. The electric three-way stop-type regulating valve according to claim 4, characterized in that: The telescopic control part comprises a sliding protrusion (513), a sliding groove (516), a driving motor (514) and a driving screw (515); the sliding protrusion (513) is fixed to one end of the first part (511) close to the second part (512), and the sliding groove (516) is opened at one end of the second part (512) close to the first part (511); The driving motor (514) is fixed in the sliding protrusion (513), and the driving screw (515) is fixed coaxially with the output shaft of the driving motor (514) and then passes through the sliding protrusion (513) and is threadedly connected to the bottom of the sliding groove (516).

6. The electric three-way stop-type regulating valve according to claim 5, characterized in that: A sealing ring groove (517) is provided at one end of the first part (511) close to the second part (512), and a sealing ring plate (518) matching the sealing ring groove (517) is provided at one end of the second part (512) close to the first part (511).

7. The electric three-way stop-type regulating valve according to claim 6, characterized in that: The sealing ring plate (518) is provided with a waterproof ring groove (519), a waterproof layer (7) is arranged in the waterproof ring groove (519), the waterproof layer (7) is tightly pressed against the sealing ring groove (517), and the waterproof layer (7) swells when it comes into contact with water.

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