External electromagnetic valve

Abstract

The utility model discloses an external solenoid valve which comprises a valve body, a fixing sleeve piece is fixedly installed on the top of the valve body, a coil installation shell is inserted into the fixing sleeve piece, and four clamping blocks distributed at equal intervals are fixedly connected to the bottom of the surface of the coil installation shell. The top of the fixing sleeve piece is provided with a clamping groove matched with the clamping block, the fixing sleeve piece is internally provided with a movable cavity communicated with the clamping groove, and one side of an inner cavity of the movable cavity is provided with four positioning grooves distributed at equal intervals. When the electromagnetic valve is assembled, the electromagnetic part and the valve body part can be assembled together only by inserting and twisting, the simple and convenient assembling mode is adopted, the assembling time can be greatly shortened, the assembling mode is simplified, the assembling efficiency of the electromagnetic valve can be improved while the basic functions of the electromagnetic valve are guaranteed, and convenience is provided for work and use of a user.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, and in particular to an external electromagnetic valve. Background Technology

[0002] External solenoid valves are important components widely used in automated control systems. Their main function is to control the flow of fluid through electromagnetic force. Traditional solenoid valves are generally designed as a single unit, or sometimes the valve body and solenoid assembly are separate. The latter is fastened with screws, meaning that four screws are used to fasten the valve body and solenoid assembly at the four corners of their mating surfaces. Because multiple screws need to be inserted and installed, and the holes on the two components need to be aligned, the assembly process is also limited by the working environment and the small installation space. This wastes a lot of time during assembly and reduces the efficiency of assembling and installing external solenoid valves.

[0003] To address the aforementioned problems, this utility model provides improvements. Summary of the Invention

[0004] This invention proposes an external solenoid valve, which solves the aforementioned problems existing in the use of the prior art.

[0005] The technical solution of this utility model is implemented as follows: An external solenoid valve includes a valve body. A fixing kit is fixedly installed on the top of the valve body. A coil mounting shell is inserted into the inside of the fixing kit. Four equally spaced locking blocks are fixedly connected to the bottom of the surface of the coil mounting shell. A locking groove adapted to the locking blocks is opened on the top of the fixing kit. A movable cavity communicating with the locking groove is opened inside the fixing kit. Four equally spaced positioning grooves are opened on one side of the inner cavity of the movable cavity. A movable block is movably installed inside the movable cavity. A locking sleeve adapted to the locking block is fixedly connected to the inner side of the movable block. Four positioning pins adapted to the positioning grooves are embedded and slidably installed on the surface of the movable block.

[0006] The present invention, as described above, is used for an external solenoid valve. Further, the movable block has evenly distributed sliding grooves that are adapted to the positioning pins on its outer side, and the four sliding grooves are arranged in pairs opposite each other.

[0007] The present invention, as described above, is used for an external solenoid valve. Further, one end of the positioning pin is fixedly connected to a spring, and the end of the spring away from the positioning pin is fixedly connected to the inner wall of the sliding groove.

[0008] The present invention, as described above, is used for an external solenoid valve. Further, multiple coils are embedded and fixedly mounted on the surface of the coil mounting shell, and a protective outer shell is provided on the surface of the coil mounting shell.

[0009] The present invention, as described above, is used for an external solenoid valve. Further, a fixed iron core is fixedly installed at the top of the inner cavity of the coil mounting housing, and a movable iron core is movably installed in the inner cavity of the coil mounting housing. A spring is fixedly connected to the top of the movable iron core, and the end of the spring away from the movable iron core is fixedly connected to the fixed iron core.

[0010] The present invention, as described above, is used for an external solenoid valve. Further, a valve seat is integrally formed at the bottom of the inner cavity of the valve body, and a main valve core adapted to the valve seat is provided at the top of the valve seat. A diaphragm is sleeved on the surface of the main valve core, and both sides of the diaphragm are fixedly connected to the inner wall of the valve body. A second spring is fixedly connected to the top of the main valve core, and the end of the second spring away from the main valve core is fixedly connected to the inner wall of the valve body.

[0011] The present invention, as described above, is used for an external solenoid valve. Further, a pilot valve seat is embedded in the top of the valve body, and a balance channel and a pressure relief channel are respectively opened on both sides of the top of the inner cavity of the valve body. The balance channel and the pressure relief channel are both connected to the pilot valve seat.

[0012] In summary, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model adopts a plug-in locking structure design. The assembly of the solenoid valve only requires plugging and twisting to assemble the solenoid part and the valve body together. This simple assembly method can greatly shorten the assembly time and simplify the assembly method. While ensuring the basic function of the solenoid valve, it can also improve the assembly efficiency of the solenoid valve and provide convenience for users' work.

[0014] 2. This utility model, through the setting of sliding groove and spring, allows the positioning pin to slide within the sliding groove during operation. When the positioning pin is squeezed by the inner wall of the compression cavity, it will enter the sliding groove and compress the spring. When the positioning pin is aligned with the positioning groove, it will pop out of the inner cavity of the sliding groove under the action of the spring and insert into the corresponding positioning groove, thereby completing the positioning and fixing of the movable block.

[0015] 3. This utility model uses a coil and a protective shell. The coil is used to generate electromagnetic force to control the movement of the moving iron core. The specific details are subject to the actual product and are existing technology. The protective shell is sleeved on the outside of the coil mounting shell. It can provide insulation protection for the coil, avoid insulation short circuits, ensure the normal operation of the solenoid valve, and provide convenience for users.

[0016] 4. This utility model, through the arrangement of a fixed iron core, a moving iron core, and a spring, has a fixed iron core that is fixed inside the coil mounting housing, and a moving iron core that is movably installed inside the coil mounting housing. Thus, after the coil is energized, the moving iron core can move up and down under the action of electromagnetic force. When it moves down, it cuts off the opening at the top of the pilot valve seat; when it moves up, it connects the balance channel and the pressure relief channel. When the moving iron core moves down, it also stretches the spring. When it needs to be reset, the spring can pull the moving iron core to reset, ensuring the normal operation of the solenoid valve and providing convenience for users.

[0017] 5. This utility model, through the arrangement of the main valve core, diaphragm, and spring 2, allows the main internal cavity of the valve body to communicate with each other when the main valve core moves upward, and conversely, the main valve core will cut off the internal cavity of the valve body, thereby ensuring the normal operation of the solenoid valve and providing convenience for users. When the main valve core moves upward, it will also compress the diaphragm and spring 2. In operation, the diaphragm and spring 2 can drive the main valve core to reset, thereby realizing the normal opening and closing of the solenoid valve.

[0018] 6. This utility model, through the setting of a balance channel, a pressure relief channel, and a pilot valve seat, uses a pilot valve seat to adapt to the moving iron core. When the moving iron core moves down and seals the opening at the top of the pilot valve seat, it can cut off the mutual flow between the balance channel and the pressure relief channel. Conversely, it can connect the balance channel and the pressure relief channel, thereby ensuring the normal operation of the solenoid valve and providing convenience for users' work. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is an exploded three-dimensional structural diagram of the present invention;

[0022] Figure 3 This is a partial three-dimensional exploded view of the present invention;

[0023] Figure 4 This is a schematic cross-sectional view of the planar structure of this utility model.

[0024] In the diagram: 1. Valve body, 2. Fixing kit, 3. Coil mounting shell, 4. Locking block, 5. Locking groove, 6. Movable cavity, 7. Positioning groove, 8. Movable block, 9. Sleeve, 10. Sliding groove, 11. Positioning pin, 12. Spring, 13. Coil, 14. Fixed iron core, 15. Moving iron core, 16. Spring 1, 17. Main valve core, 18. Diaphragm, 19. Spring 2, 20. Balance channel, 21. Pressure relief channel, 22. Pilot valve seat, 23. Protective shell. Detailed Implementation

[0025] The following will refer to the appendix in the embodiments of this utility model. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example

[0026] An external solenoid valve includes a valve body 1. A fixing kit 2 is fixedly installed on the top of the valve body 1. A coil mounting shell 3 is inserted into the inside of the fixing kit 2. Four equally spaced locking blocks 4 are fixedly connected to the bottom of the surface of the coil mounting shell 3. A slot 5 adapted to the locking blocks 4 is opened on the top of the fixing kit 2. A movable cavity 6 communicating with the slot 5 is opened inside the fixing kit 2. Four equally spaced positioning slots 7 are opened on one side of the inner cavity of the movable cavity 6. A movable block 8 is movably installed inside the movable cavity 6. A sleeve 9 adapted to the locking blocks 4 is fixedly connected to the inner side of the movable block 8. Four positioning pins 11 adapted to the positioning slots 7 are embedded and slidably installed on the surface of the movable block 8.

[0027] The specific usage process is as follows: When assembling the solenoid valve, connect the electromagnetic part, composed of the coil mounting shell 3 and other components, to the valve body part, composed of the valve body 1 and other components. Then, insert the bottom end of the coil mounting shell 3 into the fixing kit 2, which is also inserted into the movable block 8. It should be noted that during insertion, the locking blocks 4 on the coil mounting shell 3 should be controlled to be inserted into their corresponding slots 5 until all the locking blocks 4 are engaged in their corresponding sleeves 9. Then, rotate the coil mounting shell 3. The coil mounting shell 3 will drive all the locking blocks 4 to rotate. The locking blocks 4, engaged in the sleeves 9, will also drive all the sleeves 9 to rotate. Multiple sleeves 9 will simultaneously drive the movable block 8 to rotate in the movable cavity 6 until the sleeves 9 are engaged in one side of the cavity of the slot 5. In this way, the sleeve 9 and the block 4 will be misaligned with the opening at the top of the slot 5, thus restricting the upward movement of the block 4. While the movable block 8 rotates, the inner wall of the movable cavity 6 will also press the positioning pin 11 into the sliding groove 10, simultaneously compressing the spring 12 until the positioning pin 11 aligns with the corresponding positioning groove 7. Then, under the action of the spring 12, the positioning pin 11 will pop out of the inner cavity of the sliding groove 10 and engage with the corresponding positioning groove 7, thus fixing the movable block 8 in its current position, as well as the sleeve 9 and the block 4. This also restricts the movable block 8 from rotating within the movable cavity 6. Thus, the block 4 and the sleeve 9 will not move upwards or rotate within the slot 5, firmly securing themselves to one side of the inner cavity of the slot 5, ensuring the valve body and electrical... The robust assembly of the magnetic components ensures the normal operation of the solenoid valve, providing convenience for users. When the moving iron core 15 and the main valve core 17 move upwards under electromagnetic force, the inner cavity of the valve body 1 becomes unobstructed, ensuring normal fluid flow. Simultaneously, depending on the actual situation, some fluid also enters through the balance channel 20, then through the pressure relief channel 21, and finally into the main flow channel within the valve body 1. When the moving iron core 15 and the main valve core 17 move downwards and close, the fluid is cut off, thus opening and closing the solenoid valve and providing convenience for users. It should be noted that the vertical movement and opening / closing of the moving iron core 15 and the main valve core 17 are controlled by the energization of the coil 13; the specific operation is subject to the actual electromagnetic working principle. In the prior art, during operation, the positioning pin 11 slides within the sliding groove 10. When the positioning pin 11 is pressed by the inner wall of the compression chamber 6, it enters the sliding groove 10, simultaneously compressing the spring 12. When the positioning pin 11 aligns with the positioning groove 7, it pops out of the inner cavity of the sliding groove 10 under the action of the spring 12 and inserts into the corresponding positioning groove 7, thereby completing the positioning and fixing of the movable block 8. The coil 13 is used to generate electromagnetic force to control the movement of the moving iron core 15. The specific details are subject to actual conditions; this is prior art. The protective shell 23 is sleeved on the outside of the coil mounting shell 3, providing insulation protection for the coil 13, preventing short circuits, ensuring the normal operation of the solenoid valve, and providing convenience for users.The fixed iron core 14 is fixed inside the coil mounting housing 3, while the movable iron core 15 is movably mounted inside the coil mounting housing 3. Thus, when the coil 13 is energized, the movable iron core 15 can move up and down under the action of electromagnetic force. When it moves down, it cuts off the opening at the top of the pilot valve seat 22; when it moves up, it connects the balance channel 20 and the pressure relief channel 21. When the movable iron core 15 moves down, it also stretches the spring 16. When a reset is needed, the spring 16 can pull the movable iron core 15 to reset, ensuring the normal operation of the solenoid valve and providing convenience for the user. When the main valve core 17 moves up, it connects the main inner cavity of the valve body 1; conversely, when the main valve core 17 moves down, it cuts off the opening at the top of the pilot valve seat 22. The valve body 1's inner cavity is closed to ensure the normal operation of the solenoid valve and provide convenience for users. When the main valve core 17 moves upward, it compresses the diaphragm 18 and the spring 19. During operation, the diaphragm 18 and spring 19 can drive the main valve core 17 to reset, thus achieving normal opening and closing of the solenoid valve. The pilot valve seat 22 is used to adapt to the moving iron core 15. When the moving iron core 15 moves downward and seals the opening at the top of the pilot valve seat 22, it can cut off the mutual flow between the balance channel 20 and the pressure relief channel 21; conversely, it can connect the balance channel 20 and the pressure relief channel 21, thus ensuring the normal operation of the solenoid valve and providing convenience for users.

[0028] Therefore, the solenoid valve adopts a plug-in locking structure design, which allows the solenoid part and the valve body to be assembled simply by plugging and twisting. This simple assembly method can greatly shorten the assembly time and simplify the assembly process. While ensuring the basic functions of the solenoid valve, it can also improve the assembly efficiency of the solenoid valve and provide convenience for users.

[0029] The movable block 8 has evenly distributed sliding grooves 10 that are adapted to the positioning pins 11 on its outer side. The four sliding grooves 10 are arranged in pairs opposite each other. One end of the positioning pin 11 is fixedly connected to a spring 12, and the end of the spring 12 away from the positioning pin 11 is fixedly connected to the inner wall of the sliding groove 10.

[0030] Specifically, the sliding groove 10 and spring 12 are configured such that the positioning pin 11 slides within the sliding groove 10 during operation. When the positioning pin 11 is squeezed by the inner wall of the squeezing movable cavity 6, it will enter the sliding groove 10 and compress the spring 12. When the positioning pin 11 is aligned with the positioning groove 7, it will pop out of the inner cavity of the sliding groove 10 and insert into the corresponding positioning groove 7 under the action of the spring 12, thereby completing the positioning and fixing of the movable block 8.

[0031] Multiple coils 13 are embedded and fixedly mounted on the surface of the coil mounting shell 3, and a protective shell 23 is fitted on the surface of the coil mounting shell 3.

[0032] Specifically, regarding the configuration of coil 13 and protective housing 23, coil 13 is used to generate electromagnetic force to control the movement of moving iron core 15 when energized. The specific configuration is subject to the actual situation and is existing technology. Protective housing 23 is sleeved on the outside of coil mounting housing 3. It can provide insulation protection for coil 13, avoid insulation short circuit, ensure the normal operation of solenoid valve, and provide convenience for users.

[0033] A fixed iron core 14 is fixedly installed on the top of the inner cavity of the coil mounting shell 3, and a movable iron core 15 is movably installed in the inner cavity of the coil mounting shell 3. A spring 16 is fixedly connected to the top of the movable iron core 15, and the end of the spring 16 away from the movable iron core 15 is fixedly connected to the fixed iron core 14.

[0034] Specifically, the fixed iron core 14, the moving iron core 15, and the spring 16 are arranged such that the fixed iron core 14 is fixed inside the coil mounting housing 3, and the moving iron core 15 is movably installed inside the coil mounting housing 3. Thus, after the coil 13 is energized, the moving iron core 15 can move up and down under the action of electromagnetic force. When it moves down, it cuts off the opening at the top of the pilot valve seat 22. When it moves up, it connects the balance channel 20 and the pressure relief channel 21. When the moving iron core 15 moves down, it also stretches the spring 16. When it needs to be reset, the spring 16 can pull the moving iron core 15 to reset, ensuring the normal operation of the solenoid valve and providing convenience for users.

[0035] A valve seat is integrally formed at the bottom of the inner cavity of the valve body 1, and a main valve core 17 adapted to the valve seat is provided at the top of the valve seat. A diaphragm 18 is sleeved on the surface of the main valve core 17, and both sides of the diaphragm 18 are fixedly connected to the inner wall of the valve body 1. A second spring 19 is fixedly connected to the top of the main valve core 17, and the end of the second spring 19 away from the main valve core 17 is fixedly connected to the inner wall of the valve body 1.

[0036] Specifically, the main valve core 17, diaphragm 18, and spring 19 are configured such that when the main valve core 17 moves upward, the main inner cavity of the valve body 1 can be interconnected; conversely, when the main valve core 17 moves downward, it will cut off the inner cavity of the valve body 1, thereby ensuring the normal operation of the solenoid valve and providing convenience for the user. When the main valve core 17 moves upward, it will also compress the diaphragm 18 and the spring 19. Thus, during operation, the diaphragm 18 and the spring 19 can drive the main valve core 17 to reset, thereby realizing the normal opening and closing of the solenoid valve.

[0037] A pilot valve seat 22 is embedded in the top of the valve body 1. A balance channel 20 and a pressure relief channel 21 are respectively opened on both sides of the top of the inner cavity of the valve body 1. Both the balance channel 20 and the pressure relief channel 21 are connected to the pilot valve seat 22.

[0038] Specifically, the balance channel 20, the pressure relief channel 21, and the pilot valve seat 22 are designed to fit the moving iron core 15. When the moving iron core 15 moves down and seals the opening at the top of the pilot valve seat 22, it can cut off the mutual flow between the balance channel 20 and the pressure relief channel 21. Conversely, it can connect the balance channel 20 and the pressure relief channel 21, thereby ensuring the normal operation of the solenoid valve and providing convenience for the user's work.

[0039] It should be noted that the functions to be achieved by each hardware component in this utility model are supported by a large number of mature technologies and belong to the prior art. The essence of this utility model is to optimize and combine existing hardware and its connection methods for specific application scenarios to meet the adaptation requirements of specific application scenarios and solve the problems raised in the background technology (without involving improvements to the internal software of the hardware).

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An external solenoid valve, comprising a valve body (1), characterized in that: A fixing kit (2) is fixedly installed on the top of the valve body (1). A coil mounting shell (3) is inserted into the inside of the fixing kit (2). Four equally spaced locking blocks (4) are fixedly connected to the bottom of the surface of the coil mounting shell (3). A locking groove (5) adapted to the locking block (4) is opened on the top of the fixing kit (2). An active cavity (6) communicating with the locking groove (5) is opened inside the fixing kit (2). Four equally spaced positioning grooves (7) are opened on one side of the inner cavity of the active cavity (6). An active block (8) is movably installed inside the active cavity (6). A locking sleeve (9) adapted to the locking block (4) is fixedly connected to the inner side of the active block (8). Four positioning pins (11) adapted to the positioning groove (7) are embedded and slidably installed on the surface of the active block (8).

2. An external solenoid valve according to claim 1, characterized in that: The outer side of the movable block (8) is provided with evenly distributed sliding grooves (10) that are adapted to the positioning pin (11), and the four sliding grooves (10) are respectively arranged in pairs opposite each other.

3. An external solenoid valve according to claim 2, characterized in that: One end of the positioning pin (11) is fixedly connected to a spring (12), and the end of the spring (12) away from the positioning pin (11) is fixedly connected to the inner wall of the sliding groove (10).

4. An external solenoid valve according to claim 3, characterized in that: Multiple coils (13) are embedded and fixedly mounted on the surface of the coil mounting shell (3), and a protective shell (23) is fitted on the surface of the coil mounting shell (3).

5. An external solenoid valve according to claim 4, characterized in that: A fixed iron core (14) is fixedly installed on the top of the inner cavity of the coil mounting shell (3), and a movable iron core (15) is movably installed in the inner cavity of the coil mounting shell (3). A spring (16) is fixedly connected to the top of the movable iron core (15), and the end of the spring (16) away from the movable iron core (15) is fixedly connected to the fixed iron core (14).

6. An external solenoid valve according to claim 5, characterized in that: A valve seat is integrally formed at the bottom of the inner cavity of the valve body (1), and a main valve core (17) adapted to it is provided at the top of the valve seat. A diaphragm (18) is sleeved on the surface of the main valve core (17). Both sides of the diaphragm (18) are fixedly connected to the inner wall of the valve body (1). A second spring (19) is fixedly connected to the top of the main valve core (17). The end of the second spring (19) away from the main valve core (17) is fixedly connected to the inner wall of the valve body (1).

7. An external solenoid valve according to claim 6, characterized in that: A pilot valve seat (22) is embedded in the top of the valve body (1). A balance channel (20) and a pressure relief channel (21) are respectively opened on both sides of the top of the inner cavity of the valve body (1). The balance channel (20) and the pressure relief channel (21) are both connected to the pilot valve seat (22).

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