A three-way electromagnetic valve

Abstract

The application discloses a three-way electromagnetic valve and relates to the technical field of three-way electromagnetic valves.The three-way electromagnetic valve comprises a valve main body, the outer portion of the valve main body is provided with a direction-adjusting communication part capable of flexibly adjusting three communication directions of the three-way electromagnetic valve according to pipeline layout, the direction-adjusting communication part comprises three waist-shaped through grooves which are equidistantly arranged in the circumferential direction on the valve main body and valve branch pipes which are slidably connected in the waist-shaped through grooves, and the end, away from the valve main body, of each valve branch pipe is provided with a connecting and disconnecting mechanism used for quickly connecting with external pipelines.The combination of the valve branch pipes and the waist-shaped through grooves in the direction-adjusting communication part enables the valve branch pipes to flexibly adjust the angle between the valve branch pipes and the valve main body, and the angle is locked through a plug-in lock assembly, so that the flexibility and adaptability of installation are greatly improved, different pipeline layouts can be adapted, and the valve branch pipes can be quickly connected with and separated from external pipelines through the connecting and disconnecting mechanism, so that the installation and disassembly can be completed through simple operation, the installation and disassembly process is simplified, and the disassembly is accurate and efficient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of three-way electromagnetic valves, in particular to a three-way electromagnetic valve. BACKGROUND

[0002] A three-way electromagnetic valve is a device used for fluid control, which has three channels and two working states (on / off or flow direction switching). In the working state, the electromagnetic valve switches the position of the valve core through the action of the electromagnet, realizing the switching, on / off control or flow regulation of the fluid channel. It is commonly used for the control of gas, liquid, steam and other media, and is widely used in industrial, automation control, hydraulic, pneumatic and other systems.

[0003] The existing three-way electromagnetic valves usually adopt T-shaped or Y-shaped structure, in which the angle and connection mode of each branch pipe are fixed and cannot be flexibly adjusted according to actual needs, which means that if the pipeline layout changes, the entire valve body needs to be replaced or a new electromagnetic valve needs to be installed. In complex or frequently changing working environments, fixed-angle three-way electromagnetic valves limit the flexibility and adaptability of installation, increasing engineering costs and installation difficulty.

[0004] In addition, when the electromagnetic three-way valve is used in fluid control scenarios for specific working stages (such as fluid distribution and regulation in food or beverage production lines, liquid mixing in beverage formulas, raw material delivery, and thorough cleaning of these valves after work to ensure hygiene and avoid cross-contamination), it needs to be disassembled after work for maintenance and cleaning. That is, it can be stably fixed on the equipment during work, and it can be easily removed after work. However, the existing three-way electromagnetic valves are usually connected with the pipeline port by means of a clamp or threaded connection. Although this connection method can ensure the sealing and stability of the valve, it is relatively cumbersome to disassemble, increasing the difficulty of disassembly and installation. SUMMARY

[0005] The present application provides a three-way electromagnetic valve, which solves the technical problems of the existing three-way electromagnetic valve, which usually adopts T-shaped or Y-shaped structure, the angle and connection mode of each branch pipe are fixed and cannot be flexibly adjusted, increasing engineering costs and installation difficulty, and when the electromagnetic three-way valve is used in specific working scenarios that require regular disassembly and cleaning (such as fluid distribution and mixing in food or beverage production lines), the traditional clamp or threaded connection method is cumbersome to disassemble, increasing the difficulty of maintenance and cleaning, and affecting work efficiency.

[0006] The application provides a three-way electromagnetic valve, which comprises a valve body, a direction-adjusting communication part arranged outside the valve body and capable of flexibly adjusting three communication directions of the valve body according to pipeline layout, the direction-adjusting communication part comprises three waist-shaped through grooves equidistantly arranged on the valve body, valve branch pipes slidably connected in the waist-shaped through grooves, an arc-shaped baffle fixedly connected outside the valve branch pipes and attached to the outer wall of the valve body, and a plug assembly arranged between the valve body and the arc-shaped baffle and used for limiting and locking the arc-shaped baffle, and an end of each valve branch pipe away from the valve body is provided with a connecting and disconnecting mechanism used for quick connection with an external pipeline.

[0007] In a possible implementation, the connecting and disconnecting mechanism comprises a joint pipe fixedly connected to the end of the valve branch pipe and in communication with the valve branch pipe, and a sliding sleeve slidably arranged outside the joint pipe, a plurality of elastic arc-shaped strips are fixedly connected to the side of the joint pipe away from the valve branch pipe, arc-shaped clamping strips are fixedly connected to the inner wall of the elastic arc-shaped strips, and an elastic sealing ring is fixedly connected to the joint pipe and the arc-shaped inner side of the elastic arc-shaped strips, an extrusion assembly for extruding the elastic arc-shaped strips to gather them multiple times is arranged between the sliding sleeve and the elastic arc-shaped strips, so that the elastic sealing ring is deformed to wrap the external pipeline, and a guide limiting assembly for limiting the movement path of the sliding sleeve is arranged between the joint pipe and the sliding sleeve.

[0008] In a possible implementation, the plug assembly comprises a plurality of limiting holes equidistantly arranged on the upper end face of the arc-shaped baffle, a ring frame slidably connected to the outer wall of the valve body through spline cooperation, three limiting columns fixedly connected to the lower end face of the ring frame and corresponding to the arc-shaped baffle and used for cooperation with the limiting holes, and a ring slidably arranged outside the valve body and rotatably connected to the upper part of the ring frame, a circular ring plate is fixedly connected to the upper part of the outer wall of the valve body, a top spring is fixedly connected to the lower end face of the circular ring plate and abuts against the upper part of the ring, two C-shaped guide shifting grooves are arranged on the outer wall of the valve body and are centrally and symmetrically distributed, and a guide shifting column is fixedly connected to the inner wall of the ring and slidably arranged in the C-shaped guide shifting groove.

[0009] In a possible implementation, the arc-shaped inner wall of the ring is provided with a columnar groove extending along the radial direction of the ring, the outer wall of the valve body is provided with a groove, a limiting spring is fixedly connected in the columnar groove, and a positioning bead matched with the groove is fixedly connected to the end of the limiting spring close to the center of the ring.

[0010] In a possible implementation, the outer wall of the valve branch pipe in the inner cavity of the valve body is fixedly connected with an inner arc plate attached to the inner wall of the valve body.

[0011] In a possible implementation, the extrusion assembly comprises a wedge-shaped rail fixedly connected outside the elastic arc-shaped strip, and a plurality of jacks corresponding to the wedge-shaped rail and fixedly connected to the inner wall of the sliding sleeve; an arc-shaped block is fixedly connected between the elastic arc-shaped strip and the wedge-shaped rail.

[0012] In a possible implementation, the guide limiting assembly comprises a U-shaped groove formed on the outer wall of the joint pipe and a sliding column fixedly connected to the inner wall of the sliding sleeve and slidingly arranged in the U-shaped groove; the sliding sleeve and the valve branch pipe are fixedly connected together with a return spring.

[0013] In a possible implementation, the joint pipe is fixedly connected at the end away from the valve branch pipe with a connecting column, and an annular baffle is arranged for cooperating with the sliding sleeve to close the elastic arc-shaped strip.

[0014] In a possible implementation, annular sealing grooves are formed in the outer wall of the valve body above and below the waist-shaped through groove, and two elastic arc-shaped sealing strips are fixedly connected to the inner wall of the arc-shaped baffle and slidingly arranged in the annular sealing grooves.

[0015] From the above technical solutions, the present application has the following advantages: in the present application, the combination of the valve branch pipe and the waist-shaped through groove in the direction-adjusting communication part enables the valve branch pipe to be flexibly rotated to adjust the angle between the valve branch pipe and the valve body, and the plug-in lock assembly locks and positions the adjusted angle, which can adapt to different pipeline arrangements, greatly improving the flexibility and adaptability of installation, and is especially suitable for complex or frequently changing working environments.

[0016] In the present application, the cooperation of the jacks with the wedge-shaped rail and the arc-shaped block in the joint and disconnection mechanism enables the elastic sealing ring block to tightly wrap around the outside of the pipeline, and the arc-shaped clamping strip is clamped on the pipeline to achieve the connection with the pipeline; when disassembling, the jacks are separated from the wedge-shaped rail and the arc-shaped block, and the pipeline can be quickly disassembled, thus simplifying the disassembly process, reducing human errors, and ensuring that each disassembly is quickly and accurately completed. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0018] Figure 1 The three-way electromagnetic valve structure provided by the present application is shown in the schematic diagram.

[0019] Figure 2 Part structure diagram of the mortise lock assembly provided by the present application.

[0020] Figure 3 Connection structure diagram of the valve branch pipe and the waist-shaped through slot provided by the present application.

[0021] Figure 4 Top view and section view diagram of the positioning bead and the groove connection structure provided by the present application.

[0022] Figure 5 Three-dimensional structure diagram of the connecting and disassembling mechanism provided by the present application.

[0023] Figure 6 Part section structure diagram of the connecting and disassembling mechanism provided by the present application.

[0024] Figure 7 Front view and section structure diagram of the connecting and disassembling mechanism provided by the present application.

[0025] In the above drawings, the following reference signs are included: 1, valve body; 2, direction-adjusting communication part; 21, waist-shaped through slot; 22, valve branch pipe; 23, arc-shaped baffle; 24, mortise lock assembly; 241, limiting hole; 242, ring frame; 243, limiting column; 244, ring; 245, top spring; 246, C-shaped guide slot; 247, guide column; 3, connecting and disassembling mechanism; 31, joint pipe; 32, sliding sleeve; 33, elastic arc-shaped strip plate; 34, arc-shaped clamping strip; 35, elastic sealing ring block; 36, extrusion assembly; 361, wedge-shaped rail; 362, top column; 363, arc-shaped block; 37, guide limiting assembly; 371, U-shaped slot; 372, sliding column; 4, groove; 5, positioning bead; 6, inner arc plate; 7, annular baffle; 8, annular sealing groove. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below in combination with the drawings. In the following description, a lot of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0027] Please refer to Figure 1 and Figure 3The application provides a technical scheme: a three-way electromagnetic valve, which comprises a valve main body 1, a direction-adjusting communication part 2 arranged outside the valve main body 1 and capable of flexibly adjusting three communication directions of the valve according to pipeline layout, the direction-adjusting communication part 2 comprises three waist-shaped through grooves 21 equidistantly arranged on the valve main body 1 in a circumferential direction, valve branch pipes 22 slidably connected in the waist-shaped through grooves 21, arc-shaped baffles 23 fixedly connected outside the valve branch pipes 22 and attached to the outer wall of the valve main body 1, and a plug assembly 24 arranged between the valve main body 1 and the arc-shaped baffles 23 and used for limiting and locking the arc-shaped baffles 23, the outer wall of the valve branch pipe 22 in the inner cavity of the valve main body 1 is fixedly connected with an inner arc plate 6 attached to the inner wall of the valve main body 1, the inner arc plate 6 and the arc-shaped baffles 23 are combined with each other and abut on the inner and outer walls of the valve main body 1 respectively, so that the installation stability of the valve branch pipe 22 is enhanced, an interface mechanism 3 for quickly connecting with external pipelines is arranged at the end of each valve branch pipe 22 away from the valve main body 1, annular sealing grooves 8 are arranged on the outer wall of the valve main body 1 and above and below the waist-shaped through grooves 21, two elastic arc-shaped sealing strips symmetrically fixedly connected to the inner wall of the arc-shaped baffles 23 and slidably arranged in the annular sealing grooves 8, and the elastic arc-shaped sealing strips and the annular sealing grooves 8 are matched with each other, so that the connection sealing property between the arc-shaped baffles 23 and the valve main body 1 is enhanced. It should be noted that an elastic sealing layer can also be arranged on the part of the inner wall of the arc-shaped baffles 23 between the two elastic arc-shaped sealing strips arranged symmetrically above and below, so as to further enhance the connection sealing property. Alternatively, elastic sealing strips (not shown in the figure) can be arranged on the left and right sides of the inner wall of the arc-shaped baffles 23, and straight sealing grooves (not shown in the figure) can be evenly arranged on the outer wall of the valve main body 1, the elastic sealing strips and the straight sealing grooves are matched with each other, and the connection sealing property between the arc-shaped baffles 23 and the valve main body 1 is further enhanced.

[0028] Please refer to Figure 1 and Figure 2 In the embodiment, the plug assembly 24 comprises a plurality of limiting holes 241 equidistantly arranged on the upper end face of the arc-shaped baffles 23 along the arc of the arc-shaped baffles 23, a ring frame 242 slidably connected outside the valve main body 1 in a spline matching mode, three limiting columns 243 fixedly connected to the lower end face of the ring frame 242 and corresponding to the arc-shaped baffles 23 and equidistantly arranged on the ring frame 242 and used for cooperating with the limiting holes 241, and a ring 244 rotatably connected to the upper part of the ring frame 242 and movably sleeved outside the valve main body 1, a circular ring plate is fixedly connected to the upper part of the outer wall of the valve main body 1, a top spring 245 is fixedly connected to the lower end face of the circular ring plate and abuts on the upper part of the ring 244, two C-shaped guide shifting grooves 246 are arranged on the outer wall of the valve main body 1 and are centrally and symmetrically distributed, a guide shifting column 247 is fixedly connected to the inner wall of the ring 244 and slidably arranged in the C-shaped guide shifting groove 246.

[0029] Please refer to Figure 4The inner arc wall of the ring 244 is provided with a columnar groove extending along the radial direction of the ring 244, the outer wall of the valve body 1 is provided with a groove 4, and the columnar groove is fixedly connected with a limiting spring. The end of the limiting spring close to the center of the ring 244 is fixedly connected with a positioning bead 5 matched with the groove 4.

[0030] Before being installed in communication with the pipeline, the angle position of the three valve branch pipes 22 is adjusted according to the specific layout of the pipeline: first, the ring 244 is manually pulled upward to move upward, and then the guide moving column 247 is slid in the vertical section of the C-shaped guide moving groove 246, and the ring 244 also drives the limiting column 243 to move upward through the ring frame 242. When the guide moving column 247 moves upward to abut against the upper horizontal section of the C-shaped guide moving groove 246, the ring 244 is rotated to make the guide moving column 247 enter the upper horizontal section of the C-shaped guide moving groove 246, and then the ring 244 is loosened, and the valve branch pipe 22 is adjusted to the appropriate position by being rotated along the waist-shaped through groove 21. Then, the ring 244 is reversely rotated to drive the guide moving column 247 to move from the upper horizontal section of the C-shaped guide moving groove 246 to the vertical section, and the ring 244 is quickly moved downward under the driving of the top spring 245, and then drives the ring frame 242 and the limiting column 243 to move downward, until the limiting column 243 moves downward to be inserted into the limiting hole 241 located directly below, so as to lock the arc-shaped baffle 23, thereby limiting the valve branch pipe 22 after being adjusted. Then, the ring 244 is rotated to drive the guide moving column 247 to enter the lower horizontal section of the C-shaped guide moving groove 246 from the vertical section, until the ring 244 abuts against the side groove wall of the lower horizontal section of the C-shaped guide moving groove 246. At this time, the ring 244 also drives the positioning bead 5 to move to the position of the groove 4, and the positioning bead 5 is embedded into the groove 4 under the driving of the limiting spring, so as to ensure that the ring 244 cannot be rotated at will, thereby indirectly ensuring the stability of the insertion of the limiting column 243 and the limiting hole 241.

[0031] When it is necessary to adjust the position of the valve branch pipe 22 again, the ring 244 is manually twisted to move the positioning bead 5 out of the groove 4, and then the ring 244 drives the guide moving column 247 to move to the vertical section of the C-shaped guide moving groove 246, and then the above-mentioned step of pulling the ring 244 upward is repeated.

[0032] Please refer to Figure 5 , Figure 6 and Figure 7In the embodiment, the connecting and disassembling mechanism 3 comprises a joint pipe 31 fixedly connected at the end of the valve branch pipe 22 and communicated with the valve branch pipe 22, and a sliding sleeve 32 slidingly sleeved outside the joint pipe 31. A plurality of elastic arc-shaped strips 33 are fixedly connected at the side of the joint pipe 31 away from the valve branch pipe 22. An arc-shaped clamping strip 34 is fixedly connected to the inner wall of the elastic arc-shaped strip 33. An elastic sealing ring block 35 is fixedly connected to the arc-shaped inner side of the elastic arc-shaped strip 33. An extrusion assembly 36 for extruding the elastic arc-shaped strip 33 for multiple times to make the elastic sealing ring block 35 deformed and further wrap the external pipeline is arranged between the sliding sleeve 32 and the elastic arc-shaped strip 33. A guide limiting assembly 37 for limiting the movement path of the sliding sleeve 32 is arranged between the joint pipe 31 and the sliding sleeve 32. The joint pipe 31 is fixedly connected with the sliding sleeve 32 through a connecting column, and an annular baffle 7 for cooperating with the sliding sleeve 32 to close the elastic arc-shaped strip 33 is arranged at the end of the joint pipe 31 away from the valve branch pipe 22.

[0033] Please refer to Figure 5 、 Figure 6 and Figure 7 , the extrusion assembly 36 comprises a wedge-shaped rail 361 fixedly connected outside the elastic arc-shaped strip 33. A plurality of top columns 362 corresponding to the wedge-shaped rail 361 and matched with the wedge-shaped rail 361 are fixedly connected to the circumferential inner wall of the sliding sleeve 32. An arc-shaped block 363 for cooperating with the top column 362 to make the elastic arc-shaped strip 33 move for the second time is fixedly connected between the elastic arc-shaped strip 33 and the wedge-shaped rail 361.

[0034] Please refer to Figure 6 , the guide limiting assembly 37 comprises a U-shaped groove 371 opened on the outer wall of the joint pipe 31 and a sliding column 372 fixedly connected to the inner wall of the sliding sleeve 32 and slidingly arranged in the U-shaped groove 371. A return spring is fixedly connected between the sliding sleeve 32 and the valve branch pipe 22.

[0035] The initial state of the sliding sleeve 32 is to extrude the elastic arc-shaped strip 33 to make it in the gathered state. The sliding column 372 is located in the vertical section of the U-shaped groove 371 away from the valve branch pipe 22. First, the sliding sleeve 32 is twisted to drive the sliding column 372 into the horizontal section of the U-shaped groove 371. Then, the sliding sleeve 32 is horizontally pushed to move close to the valve body 1. The sliding sleeve 32 drives the sliding column 372 to move in the horizontal section of the U-shaped groove 371. Until the sliding column 372 moves to the vertical section of the U-shaped groove 371 close to the valve branch pipe 22. Then, the sliding sleeve 32 is twisted in the opposite direction to make the sliding column 372 enter the vertical section of the U-shaped groove 371 close to the valve branch pipe 22.

[0036] At this time, the connecting and disconnecting mechanism 3 is in a state of waiting for connection, then the external pipeline is inserted into the elastic sealing ring block 35, then the sleeve 32 is manually twisted to drive the slide column 372 to slide into the transverse section of the U-shaped groove 371, then the reset spring in the compressed state drives the sleeve 32 to quickly move away from the valve branch pipe 22, and the sleeve 32 drives the jacking column 362 to abut against the inclined surface of the wedge-shaped rail 361 to be extruded, so that the elastic arc-shaped strip plate 33 is deformed to move close to the axis direction of the joint pipe 31, and the elastic arc-shaped strip plate 33 extrudes the elastic sealing ring block 35 to be deformed, and then tightly wraps the outer wall of the external pipeline.

[0037] Then, when the slide column 372 moves to the vertical section position of the U-shaped groove 371 away from the valve branch pipe 22, the reset spring in the twisted state is reset to be reversely twisted to drive the sleeve 32 to rotate, and the sleeve 32 drives the slide column 372 to enter the vertical section of the U-shaped groove 371 away from the valve branch pipe 22, and the sleeve 32 in the circumferential rotation drives the jacking column 362 to abut against the arc surface of the arc-shaped block 363, and the jacking column 362 is extruded with the arc-shaped block 363 to make the elastic arc-shaped strip plate 33 gather again, so that the elastic sealing ring block 35 is deformed again to tightly wrap the external pipeline, and the elastic arc-shaped strip plate 33 drives the arc-shaped clamping strip 34 to be clamped on the annular protrusion outside the external pipeline, and at the same time, the sleeve 32 abuts against the annular baffle 7, so that the elastic arc-shaped strip plate 33 is closed, and the quick connection of the connecting and disconnecting mechanism 3 with the external pipeline is completed.

[0038] When disassembly is needed: only the sleeve 32 is twisted in the reverse direction to drive the slide column 372 to slide from the vertical section of the U-shaped groove 371 to the transverse section position, then the sleeve 32 is pushed to drive the slide column 372 to enter the transverse section of the U-shaped groove 371, so that the jacking column 362 is separated from the arc-shaped block 363 and the wedge-shaped rail 361 in turn, and then the elastic arc-shaped strip plate 33 is expanded to reset and stop extruding the elastic sealing ring block 35, and the arc-shaped clamping strip 34 is moved away from the pipeline, so that the pipeline can be quickly removed from the joint pipe 31.

[0039] When working, the angles of the three valve branch pipes 22 and the valve body 1 are adjusted according to the needs of pipeline layout, and after being adjusted to the appropriate position, the mortise lock assembly 24 is manually actuated to operate to lock and position the valve branch pipe 22, then the external pipeline is inserted into the connecting and disconnecting mechanism 3, and the connecting and disconnecting mechanism 3 is used to quickly connect the external pipeline and the valve branch pipe 22 together, and when disassembly is needed, the connecting and disconnecting mechanism 3 is only controlled to operate in the reverse direction, so that the pipeline and the valve branch pipe 22 can be quickly separated.

[0040] In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0041] In addition, the terms "first", "second", "one", "two" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "one", "two" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0042] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The embodiments of the specific implementation are the preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore; any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A three-way solenoid valve, comprising a valve body, characterized in that: The valve body is provided with a directional connecting part on its exterior that can flexibly adjust its three connecting directions according to the pipeline layout; The directional connecting part includes three circumferentially equidistant waist-shaped through slots on the valve body, a valve branch pipe slidably connected in the waist-shaped through slots, an arc-shaped baffle fixedly connected to the outside of the valve branch pipe and attached to the outer wall of the valve body, and a locking assembly that is jointly arranged between the valve body and the arc-shaped baffle for limiting and locking the arc-shaped baffle. Each valve branch pipe is provided with a connection and disconnection mechanism for quick connection and connection with an external pipeline at one end away from the valve body. The connection and disconnection mechanism includes a connector pipe fixedly connected to the end of the valve branch pipe and communicating with the valve branch pipe, and a sliding sleeve slidably sleeved outside the connector pipe. The locking assembly includes several limiting holes equidistantly opened on the upper surface of the arc-shaped baffle along the arc of the baffle, a ring frame slidably connected to the outside of the valve body by spline engagement, three limiting posts corresponding to the arc-shaped baffle and equidistantly fixedly connected to the lower surface of the ring frame for engaging with the limiting holes, and a ring rotatably connected to the upper part of the ring frame and movably sleeved on the outside of the valve body. A circular ring plate is fixedly connected to the upper part of the outer wall of the valve body, and a top spring is fixedly connected to the lower surface of the circular ring plate, which contacts the upper part of the ring. Two C-shaped guide grooves are opened on the outer wall of the valve body in a centrally symmetrical distribution, and a guide post slidably set in the C-shaped guide groove is fixedly connected to the inner wall of the ring.

2. A three-way solenoid valve according to claim 1, characterized in that: The connector pipe is circumferentially and equidistantly connected to several elastic arc-shaped strips on the side away from the valve branch pipe. An arc-shaped retaining strip is fixedly connected to the inner wall of the elastic arc-shaped strip. An elastic sealing ring block is fixedly connected to both the connector pipe and the inner arc of the elastic arc-shaped strip. An extrusion assembly is provided between the sliding sleeve and the elastic arc-shaped strip for squeezing the elastic arc-shaped strip multiple times to deform the elastic sealing ring block and wrap it around the external pipe. A guide limiting assembly is provided between the connector pipe and the sliding sleeve for limiting the movement path of the sliding sleeve.

3. A three-way solenoid valve according to claim 1, characterized in that: The inner wall of the ring has a columnar groove extending radially, and the outer wall of the valve body has a groove. A limit spring is fixedly connected in the columnar groove, and a positioning bead that mates with the groove is fixedly connected to one end of the limit spring near the center of the ring.

4. A three-way solenoid valve according to claim 1, characterized in that: The valve branch pipe is located on the outer wall of the valve body cavity and is fixedly connected to an inner arc plate that fits against the inner wall of the valve body.

5. A three-way solenoid valve according to claim 2, characterized in that: The extrusion assembly includes a wedge-shaped rail fixedly connected to the outside of the elastic arc-shaped strip. The inner wall of the sliding sleeve is fixedly connected at equal intervals with several top posts corresponding to and cooperating with the wedge-shaped rail. An arc-shaped block is fixedly connected between the elastic arc-shaped strip and the wedge-shaped rail for cooperating with the top posts again to make the elastic arc-shaped strip move together for a second time.

6. A three-way solenoid valve according to claim 2, characterized in that: The limiting component includes a U-shaped groove formed on the outer wall of the connector pipe and a sliding column fixedly connected to the inner wall of the sliding sleeve and slidably disposed in the U-shaped groove. A return spring is fixedly connected between the sliding sleeve and the valve branch pipe.

7. A three-way solenoid valve according to claim 2, characterized in that: The end of the connector pipe away from the valve branch pipe is fixedly connected to an annular baffle that cooperates with the sliding sleeve to close the elastic arc-shaped strip.

8. A three-way solenoid valve according to claim 1, characterized in that: The valve body has annular sealing grooves on its outer wall, both above and below the waist-shaped through groove. The arc-shaped baffle has two elastic arc-shaped sealing strips that are slidably fixedly connected to its arc-shaped inner wall.

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