Proportional electromagnetic valve capable of preventing valve element from rotating

Abstract

The utility model provides a proportional electromagnetic valve capable of preventing a valve element from rotating, and belongs to the technical field of electromagnetic valves. The movable iron core is arranged at one end of the valve body with the valve channel, the valve element is arranged in the valve channel in a sliding mode, one end of the conductor connecting piece is connected with the movable iron core, the other end of the conductor connecting piece abuts against the valve element, meanwhile, the guide cavity communicated with the valve channel is formed in the end, close to the movable iron core, of the valve body, and the guide frame is installed in the guide cavity. The guide frame is provided with a receding hole, a plurality of guide grooves are formed in the inner wall of the receding hole, the conductor connecting piece is arranged in the receding hole, a plurality of guide blocks extending into the guide grooves are arranged on the outer side wall of the receding hole, and meanwhile an insertion hole and an insertion rod of the positioning structure are arranged on the conductor connecting piece and the valve element respectively. The valve seat circumferentially limits the conductor connecting piece through the guide frame, and the conductor connecting piece circumferentially limits the valve element, so that the problem of circumferential rotation of the valve element is prevented, the influence of circumferential rotation abrasion on the control precision is eliminated, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, specifically to a proportional electromagnetic valve that prevents valve core rotation. Background Technology

[0002] As a type of solenoid valve, the proportional solenoid valve uses the magnetic field generated by the energization of the coil assembly to act on the moving iron core. The moving iron core drives the valve core to move within the valve passage, thereby achieving the connection and adjustment of the valve passage inlet and outlet to meet control requirements.

[0003] Currently, existing proportional solenoid valves on the market, such as the proportional flow control valve disclosed in patent CN222527003U, include an iron shell with an upper insertion port at the upper end and a lower connecting pipe at the lower end. A coil assembly is inserted into the iron shell from top to bottom along the upper insertion port. Simultaneously, a moving iron core is inserted into the bottom of the coil assembly from bottom to top along the lower connecting pipe. The valve body is inserted into the bottom of the coil assembly from top to bottom along the lower connecting end, located below the moving iron core. The outer peripheral sidewall of the valve body has an upper inlet hole and a lower outlet hole. A conductor connector matches the bottom of the moving iron core, and the valve core is inserted into the valve... The upper part of the valve body is used for matching and connecting with the conductor connector. The outer side wall is provided with a mating upper hole and a mating lower hole. In addition, the spring unit is fixed to the bottom inner side of the valve body, and the upper end abuts against the valve core. After the coil component is energized and generates a magnetic field, the moving iron core moves down under the action of the magnetic field. The moving iron core pushes the valve core to slide in the valve body through the conductor connector. Under the combined action of the conductor connector and the spring unit, the valve core changes the position of the mating upper hole and the mating lower hole relative to the upper inlet hole and the lower outlet hole, so as to realize the on / off control of the upper inlet hole and the lower outlet hole and the adjustment of the connection size, thus meeting the proportional adjustment requirements. Although the proportional solenoid valve with the above structure can meet the requirements of normal use, its valve core is only subjected to the action of the conductor connector and spring unit in the axial direction, and there is no restriction in the circumferential direction. After long-term use, since the upper inlet and lower outlet are both located on the side wall of the valve body, there is a situation of side oil inlet and outlet. The valve core is subjected to uneven force in the circumferential direction, which causes the valve core to rotate. This results in relative rotation between the valve core and the conductor connector, as well as between the valve core and the spring unit. Consequently, the end of the valve core wears down, affecting the axial movement stroke of the valve core and thus affecting the control accuracy. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, the aim is to provide a proportional solenoid valve that prevents valve core rotation. A guide frame is provided between the valve body and the conductor connector to restrict the circumferential rotation of the conductor connector. Simultaneously, a positioning structure is provided between the conductor connector and the valve core. This positioning structure achieves circumferential limiting between the conductor connector and the valve core, thereby achieving circumferential limiting of the valve core relative to the valve body. This ensures that the valve core only slides axially within the valve body without rotating, thus preventing wear caused by valve core rotation after prolonged use and guaranteeing control accuracy.

[0005] The specific technical solution is as follows:

[0006] A proportional solenoid valve for preventing valve core rotation includes a moving iron core, a valve body, a conductor connector, and a valve core. One end of the moving iron core is connected to one end of the conductor connector, and the other end of the conductor connector abuts against one end of the valve core. The valve body is provided with a valve passage with an oil inlet and an oil outlet. The valve core is slidably disposed within the valve passage. The valve body also includes a guide frame and a positioning structure. One end of the valve body is provided with a guide cavity, which is connected to one end of the valve passage. The conductor connector is installed in the guide cavity, and the guide frame is disposed in the guide cavity and sleeved outside the conductor connector.

[0007] Furthermore, the guide frame includes a guide sleeve and a connecting ring. The center of the guide sleeve has a clearance hole that extends through both ends. The conductor connector is installed in the clearance hole. At the same time, the inner wall of the clearance hole has several guide grooves along the axial direction of the guide sleeve. Furthermore, the outer wall of the conductor connector has several guide blocks that correspond one-to-one with the guide grooves along its radial direction. A connecting ring is coaxially sleeved on the outer wall of the guide sleeve, and the connecting ring is connected to the cavity wall of the guide cavity.

[0008] The positioning structure includes sockets and rods. Several sockets are provided on the end face of the conductor connecting block that abuts against the valve core. Several protruding rods are provided on the end face of the valve core that abuts against the conductor connecting block. The rods correspond one-to-one with the sockets. When the conductor connecting block and the valve core abut against each other, the rods are inserted into the corresponding sockets.

[0009] In the aforementioned proportional solenoid valve designed to prevent valve core rotation, the connecting ring and the inner wall of the guide cavity of the valve body are interference-fitted.

[0010] In the aforementioned proportional solenoid valve for preventing valve core rotation, an external thread is provided on the outer wall of the connecting ring, and an internal thread that mates with the external thread is provided on the inner wall of the guide cavity of the valve body.

[0011] The aforementioned proportional solenoid valve for preventing valve core rotation further includes a clamping assembly, which is a retaining ring. A retaining groove is provided at the cavity opening at the end of the guide cavity away from the valve passage. The retaining ring is engaged in the retaining groove, and one side of the retaining ring presses against the connecting ring.

[0012] In the aforementioned proportional solenoid valve for preventing valve core rotation, the guide cavity has an flared opening at the end opposite to the valve passage, and a slot is provided within the flared opening of the guide cavity.

[0013] In the aforementioned proportional solenoid valve designed to prevent valve core rotation, the clamping assembly further includes a gasket, which is installed between the retaining ring and the connecting ring.

[0014] In the aforementioned proportional solenoid valve that prevents valve core rotation, the cross-section of the clearance hole in the guide sleeve is a regular polygon.

[0015] In the aforementioned proportional solenoid valve for preventing valve core rotation, a limiting groove is provided on the end face of the valve core away from the conductor connector, and the limiting groove is a spiral groove.

[0016] The aforementioned proportional solenoid valve for preventing valve core rotation further includes a pressure-blocking component, which is installed on the valve body at the end away from the conductor connector, and the spring at the end away from the valve core abuts against the pressure-blocking component.

[0017] The positive effects of the above technical solution are:

[0018] The aforementioned proportional solenoid valve for preventing valve core rotation utilizes a guide frame with guide grooves mounted on the valve body. The guide frame has clearance holes for mounting conductor connectors. The conductor connector has guide blocks extending into the guide grooves. Simultaneously, a socket is provided at one end of the conductor connector, and a rod is inserted into the socket at one end of the valve core. This allows the valve body to restrict the circumferential rotation of the conductor connector through the interaction of the guide grooves on the guide frame and the guide blocks on the conductor connector. Furthermore, the conductor connector, through the interaction of the rod and the socket, restricts the circumferential rotation of the valve core it abuts. This satisfies the requirement of the valve body restricting the circumferential rotation of the valve core, preventing wear and tear on the valve core's travel during prolonged use due to potential circumferential rotation. This improves the valve's control accuracy and extends its service life. Attached Figure Description

[0019] Figure 1 This is a structural diagram of an embodiment of a proportional solenoid valve for preventing valve core rotation according to the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of section A;

[0021] Figure 3 This is a structural diagram of a conductor connector according to a preferred embodiment of the present invention;

[0022] Figure 4 This is a structural diagram of a guide frame according to a preferred embodiment of the present invention.

[0023] In the attached diagram: 1. Moving iron core; 2. Valve body; 21. Oil inlet; 22. Oil outlet; 23. Valve passage; 24. Guide cavity; 25. Pressing component; 26. Spring; 241. Slot; 3. Conductor connector; 31. Guide block; 4. Valve core; 5. Stationary iron core assembly; 51. Coil assembly; 6. Magnetic shielding sleeve; 7. Guide frame; 71. Guide sleeve; 72. Connecting ring; 73. Clamping assembly; 711. Clearance hole; 712. Guide groove; 731. Snap ring; 732. Gasket; 8. Positioning structure; 81. Insertion hole; 82. Insert rod. Detailed Implementation

[0024] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following embodiments are provided in conjunction with the appendix. Figure 1 To be continued Figure 4 The technical solution provided by this utility model is described in detail, but the following content is not intended to limit this utility model.

[0025] Figure 1 This is a structural diagram of an embodiment of a proportional solenoid valve for preventing valve core rotation according to the present invention; Figure 2 for Figure 1 An enlarged view of section A. (See image below.) Figure 1 and Figure 2As shown, the proportional solenoid valve for preventing valve core rotation provided in this embodiment includes: a moving iron core 1, a valve body 2, a conductor connector 3, a valve core 4, a stationary iron core assembly 5, a magnetic shielding sleeve 6, a guide frame 7, and a positioning structure 8. A sliding cavity with an open end is formed at the center of the stationary iron core assembly 5, providing space and guidance for the subsequent movement of the moving iron core 1. Furthermore, a coil assembly 51 is embedded in the stationary iron core assembly 5 and sleeved outside the sliding cavity. A magnetic shielding sleeve 6 is coaxially sleeved inside the sliding cavity, and the moving iron core 1 is slidably disposed within the magnetic shielding sleeve 6. Preferably, a sliding sleeve is also provided between the moving iron core 1 and the magnetic shielding sleeve 6. This sliding sleeve facilitates the sliding of the moving iron core 1 within the magnetic shielding sleeve 6 and allows the magnetic field generated by the coil assembly 51 to push the moving iron core 1 to slide within the magnetic shielding sleeve 6 when energized or when the current changes, thereby meeting the valve control and regulation requirements. Furthermore, one end of the valve body 2 is inserted into the stationary iron core assembly 5 from one end of the slide cavity, thus connecting the valve body 2 and the stationary iron core assembly 5. Simultaneously, one end of the moving iron core 1 is connected to one end of the conductor connector 3, and the other end of the conductor connector 3 abuts against one end of the valve core 4. This allows the moving iron core 1 to act on the valve core 4 through the conductor connector 3 during movement, thereby pushing the valve core 4 to move. Moreover, the valve body 2 is provided with a valve passage 23 with an oil inlet 21 and an oil outlet 22. The valve passage 23 is a straight passage, with one end connected to the slide cavity and coaxially arranged. This ensures that the arrangement direction of the valve passage 23 is consistent with the arrangement direction of the slide cavity, and that the movement direction of the moving iron core 1 is consistent with the arrangement direction of the valve passage 23. Additionally, the valve core 4 is slidably disposed within the valve passage 23, ensuring that when the moving iron core 1 pushes the valve core 4 to move through the conductor connector 3, the movement direction of the valve core 4 is consistent with the movement direction of the moving iron core 1. This guarantees that the valve core 4 can smoothly slide within the valve passage 23, meeting the valve's control requirements.

[0026] Specifically, a guide cavity 24 is provided at one end of the valve body 2. The guide cavity 24 is located at the end of the valve body 2 that is inserted into the stationary iron core assembly 5. The guide cavity 24 is connected to the sliding cavity, ensuring that the guide cavity 24 can subsequently act on the outside of the conductor connector 3. Preferably, the guide cavity 24 is arranged coaxially with the sliding cavity, ensuring that the arrangement direction of the guide cavity 24 is consistent with the movement direction of the conductor connector 3. At the same time, the guide cavity 24 is connected to one end of the valve channel 23, and the conductor connector 3 is installed in the guide cavity 24, providing conditions for subsequently restricting the circumferential rotation of the conductor connector 3 through the valve body 2. Furthermore, the guide frame 7 is provided in the guide cavity 24 and sleeved on the outside of the conductor connector 3, so that the valve body 2 can cooperate with the conductor connector 3 through the guide frame 7 to meet the usage requirements of restricting the rotation of the conductor connector 3.

[0027] Figure 3 This is a structural diagram of a conductor connector according to a preferred embodiment of the present invention; Figure 4 This is a structural diagram of a guide frame according to a preferred embodiment of the present invention. Figures 1 to 4As shown, the guide frame 7 includes a guide sleeve 71 and a connecting ring 72. A clearance hole 711 is provided at the center of the guide sleeve 71, penetrating both ends. The conductor connector 3 is installed within the clearance hole 711. The clearance hole 711 provides installation and movement space for the conductor connector 3, and also provides conditions for subsequently restricting the rotation of the conductor connector 3. Furthermore, several guide grooves 712 are provided along the axial direction of the guide sleeve 71 on the inner wall of the clearance hole 711. Several guide blocks 31, corresponding one-to-one with the guide grooves 712, are provided along the radial direction of the outer wall of the conductor connector 3. Through the cooperation of the guide blocks 31 and the guide grooves 712, the axial movement of the conductor connector 3 along the valve core 4 within the clearance hole 711 can be satisfied, while the circumferential rotation of the conductor connector 3 can be restricted when the guide frame 7 does not rotate, thus providing conditions for subsequently preventing the circumferential rotation of the valve core 4. In addition, a connecting ring 72 is coaxially sleeved on the outer wall of the guide sleeve 71. Preferably, the connecting ring 72 and the guide sleeve 71 are an integral structure, which has better integrity and higher structural strength, ensuring that the guide frame 7 can be stably installed in the guide cavity 24 of the valve body 2 through the connecting ring 72. The connecting ring 72 is connected to the cavity wall of the guide cavity 24, that is, the guide frame 7 is stably connected to the valve body 2 through its connecting ring 72, ensuring more stable and reliable circumferential limiting of the conductor connector 3.

[0028] Specifically, the positioning structure 8 includes insertion holes 81 and insertion rods 82. Several insertion holes 81 are provided on the end face of the conductor connecting block that abuts against the valve core 4. Several protruding insertion rods 82 are provided on the end face of the valve core 4 that abuts against the conductor connecting block. Preferably, the insertion rods 82 and the valve core 4 are an integral structure, reducing assembly gaps and further improving control accuracy. Furthermore, the insertion rods 82 correspond one-to-one with the insertion holes 81, so that when the conductor connecting block and the valve core 4 abut, the insertion rods 82 are inserted into the corresponding insertion holes 81 to achieve circumferential limiting between the valve core 4 and the conductor connecting block. This prevents circumferential rotation of the valve core 4 during use, thus preventing wear and ensuring control accuracy and extending service life.

[0029] More specifically, the connecting ring 72 and the inner wall of the guide cavity 24 of the valve body 2 are interference fit. During assembly, the connecting ring 72 is squeezed into the guide cavity 24 of the valve body 2 by extrusion, so as to realize the stable installation of the guide frame 7 in the guide cavity 24 of the valve body 2, ensuring the stability of the structure after assembly and improving the control accuracy.

[0030] In addition, this embodiment also provides another structure in which the connecting ring 72 and the guide cavity 24 of the valve body 2 are connected by a threaded connection. In this case, an external thread is provided on the outer wall of the connecting ring 72, and an internal thread that mates with the external thread is provided on the inner wall of the guide cavity 24 of the valve body 2. This allows the guide frame 7 to be installed in the guide cavity 24 of the valve body 2, so that a threaded connection can be achieved by the engagement of the external thread on the connecting ring 72 with the internal thread in the guide cavity 24. This facilitates the disassembly and assembly of the guide frame 7, and the guide frame 7 can be replaced after the guide groove 712 of the guide frame 7 wears out, reducing the cost of use.

[0031] More specifically, when the connecting ring 72 and the guide cavity 24 are connected by a thread, a clamping assembly 73 is also provided between the connecting ring 72 and the guide cavity 24. In this case, the clamping assembly 73 is a retaining ring 731. At the same time, a retaining groove 241 is provided at the cavity opening of the guide cavity 24 away from the valve passage 23. When the connecting ring 72 is installed in the guide cavity 24, the connecting ring 72 will first pass through the retaining groove 241, which provides the conditions for the connecting ring 72 to be clamped in the guide cavity 24 later through the retaining groove 241. Furthermore, the retaining ring 731 is engaged within the retaining groove 241, with one side of the retaining ring 731 pressing against the connecting ring 72. The retaining ring 731 restrains the guide frame 7 installed within the guide cavity 24. Since the guide frame 7 is installed in the guide cavity 24 via a threaded connection, it will inevitably experience axial displacement when rotating. If the guide frame 7 accidentally rotates within the guide cavity 24, the retaining ring 731 can axially restrict one end of the guide frame 7, thus preventing accidental rotation. Additionally, since the other end of the guide frame 7 abuts against the bottom of the guide cavity 24, it can no longer move axially, thus preventing accidental rotation and ensuring the reliability of the guide frame 7's circumferential positioning of the conductor connector 3.

[0032] More specifically, the opening of the guide cavity 24 at the end opposite to the valve passage 23 is flared, which increases the size of the opening of the guide cavity 24 at the end opposite to the valve passage 23. The slot 241 is set within the flared range of the guide cavity 24, which makes the inner diameter of the part of the guide cavity 24 with the slot 241 larger. This avoids damage to the internal thread of the connection by the slot 241 and other structures, so that the installation of the guide frame 7 in the guide cavity 24 of the valve body 2 will not be affected by the slot 241 and other structures. The structural design is more reasonable.

[0033] More specifically, in addition to the aforementioned retaining ring 731, the clamping assembly 73 also includes a gasket 732. Preferably, the gasket 732 is a rubber gasket with a certain elastic deformation capability. When the gasket 732 is installed between the retaining ring 731 and the connecting ring 72, that is, when installing the retaining ring 731, the gasket 732 can be squeezed to fill any assembly gaps that may exist between the retaining ring 731 and the connecting ring 72, thereby ensuring the stability of the guide frame 7 after it is installed in the guide cavity 24, and ensuring that the guide frame 7 can restrict the circumferential rotation of the conductor connector 3, thereby restricting the circumferential rotation of the valve core 4.

[0034] More specifically, the cross-section of the clearance hole 711 of the guide sleeve 71 is set as a regular polygon, so that multiple planes are provided on the inner wall of the clearance hole 711, thereby forming multiple mating limiting surfaces. This allows the clearance hole 711 to not only provide installation and movement space for the conductor connector 3, but also to facilitate the threaded connection between the guide frame 7 and the valve body 2 when the guide frame 7 is installed in the guide cavity 24 of the valve body 2. The regular polygonal body of a wrench with a regular polygonal column is inserted into the clearance hole 711 and the wrench is turned to rotate the guide frame 7.

[0035] More specifically, a limiting groove is provided on the end face of the valve core 4 away from the conductor connector 3. Preferably, the limiting groove is a spiral groove, which allows the limiting groove to conform to the outermost spiral of one end of the spring 26. At the same time, the limiting groove is recessed on the end face of the valve core 4, thereby forming a blockage at one end of the limiting groove. When the end of the valve core 4 abuts against the spring 26, the outermost spiral of one end of the spring 26 can enter into the limiting groove, thus limiting the position of the spring 26 against the end of the valve core 4, improving structural stability. At the same time, the blocking at one end of the limiting groove can also circumferentially limit the spring 26, further preventing the valve core 4 from rotating circumferentially and improving control accuracy.

[0036] More specifically, a pressing member 25 is provided at the end of the valve body 2 away from the moving iron core 1. At this time, the pressing member 25 is installed at the end of the valve body 2 away from the conductor connector 3, and the end of the valve core 4 away from the conductor connector 3 is abutted against the pressing member 25 by a spring 26, providing a stable base for the spring 26. The pressing member 25 is arranged in a cap shape, with one end extending into the valve passage 23 and threadedly connected to it. This not only facilitates the installation and removal of the pressing member 25 on the valve body 2, but also allows adjustment of its position on the valve body 2 by turning the pressing member 25. This ensures that even in the event of wear on the valve core 4 or fatigue of the spring 26, the force exerted by the spring 26 on the valve core 4 can be adjusted by turning the pressing member 25, thereby adapting to the stroke changes of the valve core 4 and meeting its sliding requirements. It is worth noting that the other end of the pressing member 25 is exposed outside the valve body 2, and a tool plane is provided tangentially on the outer wall of the end of the pressing member 25 exposed outside the valve body 2. This makes it easier for operators to use tools such as socket wrenches or open-end wrenches to turn the pressing member 25 with the tool plane, making the operation more convenient and the structural design more reasonable.

[0037] The proportional solenoid valve for preventing valve core rotation provided in this embodiment includes a moving iron core 1, a valve body 2, a conductor connector 3, a valve core 4, a guide frame 7, and a positioning structure 8. The moving iron core 1 is positioned at one end of the valve body 2, which has a valve passage 23. The valve core 4 is slidably disposed within the valve passage 23. One end of the conductor connector 3 is connected to the moving iron core 1, and the other end abuts against the valve core 4. Simultaneously, a guide cavity 24 communicating with the valve passage 23 is provided at one end of the valve body 2 near the moving iron core 1. The guide frame 7 is installed within the guide cavity 24 and has a clearance hole 711. Several... The guide groove 712 houses the conductor connector 3 within the clearance hole 711, and several guide blocks 31 extending into the guide groove 712 are provided on its outer side wall. This ensures both the axial movement of the conductor connector 3 and restricts its circumferential rotation. Simultaneously, the insertion hole 81 and insertion rod 82 of the positioning structure 8 are respectively provided on the conductor connector 3 and the valve core 4. The insertion rod 82 is inserted into the insertion hole 81 to achieve circumferential positioning between the conductor connector 3 and the valve core 4, thereby preventing circumferential rotation of the valve core 4, eliminating the impact of circumferential rotation wear on control accuracy, and extending service life.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A proportional solenoid valve for preventing valve core rotation, comprising a moving iron core, a valve body, a conductor connector, and a valve core, wherein one end of the moving iron core is connected to one end of the conductor connector, the other end of the conductor connector abuts against one end of the valve core, and the valve body is provided with a valve passage having an oil inlet and an oil outlet, and the valve core is slidably disposed within the valve passage, characterized in that, Also includes: The valve body includes a guide frame and a positioning structure. One end of the valve body is provided with a guide cavity, which is connected to one end of the valve passage. The conductor connector is installed in the guide cavity, and the guide frame is disposed in the guide cavity and sleeved on the outside of the conductor connector. Furthermore, the guide frame includes a guide sleeve and a connecting ring. The guide sleeve has a clearance hole extending through both ends at its center. The conductor connector is installed in the clearance hole. Meanwhile, the inner wall of the clearance hole has several guide grooves along the axial direction of the guide sleeve. The outer wall of the conductor connector has several guide blocks that correspond one-to-one with the guide grooves along its radial direction. A connecting ring is coaxially sleeved on the outer wall of the guide sleeve, and the connecting ring is connected to the cavity wall of the guide cavity. The positioning structure includes a socket and a rod. The end face of the conductor connecting block that abuts against the valve core is provided with a plurality of sockets. The end face of the valve core that abuts against the conductor connecting block is provided with a plurality of protruding rods. The plurality of rods correspond one-to-one with the plurality of sockets. When the conductor connecting block and the valve core abut against each other, the rods are inserted into the corresponding sockets.

2. The proportional solenoid valve for preventing valve core rotation according to claim 1, characterized in that, The connecting ring is interference-fitted with the inner wall of the guide cavity of the valve body.

3. The proportional solenoid valve for preventing valve core rotation according to claim 1, characterized in that, The outer wall of the connecting ring is provided with an external thread, and the inner wall of the guide cavity of the valve body is provided with an internal thread that mates with the external thread.

4. The proportional solenoid valve for preventing valve core rotation according to claim 3, characterized in that, It also includes a clamping assembly, which is a retaining ring. At the same time, a retaining groove is provided at the cavity opening of the guide cavity away from the valve channel. The retaining ring is engaged in the retaining groove, and one side of the retaining ring presses against the connecting ring.

5. The proportional solenoid valve for preventing valve core rotation according to claim 4, characterized in that, The guide cavity has an flared opening at the end opposite to the valve channel, and the slot is located within the flared opening of the guide cavity.

6. The proportional solenoid valve for preventing valve core rotation according to claim 4 or 5, characterized in that, The clamping assembly also includes a gasket, which is installed between the retaining ring and the connecting ring.

7. The proportional solenoid valve for preventing valve core rotation according to claim 1, characterized in that, The cross-section of the clearance hole of the guide sleeve is a regular polygon.

8. The proportional solenoid valve for preventing valve core rotation according to claim 1, characterized in that, A limiting groove is formed on the end face of the valve core away from the conductor connector, and the limiting groove is a spiral groove.

9. The proportional solenoid valve for preventing valve core rotation according to claim 8, characterized in that, It also includes a pressing member, which is installed on the end of the valve body away from the conductor connector, and the end of the spring away from the valve core abuts against the pressing member.

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