Pulse electromagnetic valve with compact structure

Abstract

The utility model discloses a pulse solenoid valve with a compact structure, which comprises a valve seat and a solenoid valve main body arranged on the valve seat, the solenoid valve main body comprises an upper shell and a lower shell, a coil support is arranged in the upper shell, a coil is wound on the outer side of the coil support, a static iron core is fixedly arranged in the middle of the coil support, and the static iron core is arranged in the lower shell. A step is arranged in the middle of the coil support, a spacer is installed between the step and the static iron core, a movable iron core is installed in the middle of the coil support and located below the spacer in a sliding mode, a containing groove is formed in the top of the movable iron core, a spring is installed in the containing groove, and a sealing piece is movably installed at the bottom of the movable iron core. In addition, the valve seat is easy to machine, the movable iron core can be blocked through the arranged spacer, the movable iron core cannot make direct contact with the static iron core, the spacer is made of non-magnetic stainless steel, magnetic lines of force can be cut off, and therefore the movable iron core and the static iron core are prevented from being bonded together.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to a pulse electromagnetic valve with a compact structure. Background Art

[0002] The pulse solenoid valve, also known as the diaphragm valve, is an important control component. Its working principle is mainly based on the principle of electromagnetic induction. When a positive pulse signal is input to the coil inside the solenoid valve through a wire, the coil will generate a working magnetic flux. This magnetic flux will attract the moving iron core, causing it to attract and open the valve. When the positive pulse signal stops being input, the moving iron core will be released and return to its initial state under the action of the spring force, thereby closing the valve.

[0003] After long-term use, the contact surface between the moving iron core and the static iron core of the existing pulse solenoid valve will wear out, making the two easily stick together, affecting the normal operation of the pulse solenoid valve. In addition, the valve seat needs to be processed according to the shape of the outer wall of the solenoid valve body to achieve a good sealing effect. Therefore, the processing accuracy of the valve seat is high and the valve seat processing is difficult. Utility Model Content

[0004] The purpose of the present utility model is to provide a pulse solenoid valve with a compact structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a pulse solenoid valve with a compact structure, comprising a valve seat and a solenoid valve body installed on the valve seat, the solenoid valve body comprising an upper shell and a lower shell, a coil bracket being installed inside the upper shell, a coil being wound around the outside of the coil bracket, a static iron core being fixedly installed in the middle of the coil bracket, a step being provided in the middle of the coil bracket, a spacer being installed between the step and the static iron core, a moving iron core being slidably installed in the middle of the coil bracket and located below the spacer, a receiving groove being provided on the top of the moving iron core, a spring being installed inside the receiving groove, a sealing member being movably installed at the bottom of the moving iron core, a water outlet pipe being provided at the bottom of the lower shell, a second O-ring being sleeved on the outside of the water outlet pipe, and a first O-ring being sleeved on the outside of the lower shell.

[0006] As a preferred solution of the present invention, the top of the valve seat is provided with a mounting hole for accommodating the lower shell, the bottom of the inner wall of the valve seat is provided with a water outlet seat matching the water outlet pipe, and the water outlet seat is connected to the mounting hole.

[0007] As a preferred solution of the present invention, a water inlet joint and a water outlet joint are integrally formed at both ends of the valve seat, the water inlet joint is communicated with the mounting hole, and the water outlet joint is communicated with the water outlet seat.

[0008] As a preferred solution of the present invention, a card slot is provided on the outer side of the lower shell, and a card hook that matches the card slot is provided on the outer side of the upper shell.

[0009] As a preferred solution of the present invention, through holes are provided at the four corners of the upper shell and the lower shell, screw holes corresponding to the through holes are provided on the valve seat, and screws are threadedly connected between the through holes and the screw holes.

[0010] Compared with the existing technology, the beneficial effects of the present invention are: the present invention is not only compact in structure and easy to disassemble and assemble, but also the valve seat is simple to process. The spacer is provided to block the moving iron core so that the moving iron core cannot directly contact the static iron core, and the spacer is made of non-magnetic stainless steel, so that it can isolate the magnetic lines of force, thereby preventing the moving iron core and the static iron core from sticking together. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0012] Figure 2 It is a cross-sectional view of the utility model;

[0013] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;

[0014] Figure 4 This is a structural diagram of the solenoid valve body of the utility model;

[0015] Figure 5 This is a structural diagram of the valve seat of the utility model.

[0016] In the figure: 1. Valve seat; 2. Upper shell; 3. Lower shell; 4. Screw; 5. Water outlet joint; 6. Water inlet joint; 7. Step; 8. First O-ring; 9. Water outlet pipe; 10. Second O-ring; 11. Water outlet seat; 12. Spring; 13. Moving iron core; 14. Coil; 15. Coil bracket; 16. Static iron core; 17. Receiving groove; 18. Spacer; 19. Hook; 20. Slot; 21. Through hole; 22. Screw hole; 23. Mounting hole; 24. Seal. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figures 1 to 5 The utility model provides a technical solution: a pulse solenoid valve with a compact structure, comprising a valve seat 1 and a solenoid valve body installed on the valve seat 1, the solenoid valve body comprising an upper shell 2 and a lower shell 3, a coil holder 15 is installed inside the upper shell 2, a coil 14 is wound around the outside of the coil holder 15, a static iron core 16 is fixedly installed in the middle of the coil holder 15, a step 7 is provided in the middle of the coil holder 15, the step 7 is used to support the diaphragm 18 to prevent the diaphragm 18 from shifting, a diaphragm 18 is installed between the step 7 and the static iron core 16, the diaphragm 18 is used to block the moving iron core 13, so that the moving iron core 13 cannot directly contact the static iron core 16, and the material of the diaphragm 18 is non-magnetic stainless steel, so that it can isolate the magnetic lines of force, thereby preventing the moving iron core 13 and the static iron core 16 from sticking. Connected together to ensure that the solenoid valve can work normally, the middle part of the coil bracket 15 and below the diaphragm 18 is slidably installed with a moving iron core 13, the top of the moving iron core 13 is provided with a receiving groove 17, and the inside of the receiving groove 17 is installed with a spring 12, which is used to reset the moving iron core 13, and a seal 24 is movably installed at the bottom of the moving iron core 13, and a water outlet pipe 9 is provided at the bottom of the lower shell 3. The outer side of the water outlet pipe 9 is provided with a second O-ring 10, and the outer side of the lower shell 3 is provided with a first O-ring 8. The second O-ring 10 is used to seal between the water outlet pipe 9 and the water outlet seat 11, and the first O-ring 8 is used to seal between the lower shell 3 and the valve seat 1. Therefore, when processing the valve seat 1, only the sealing at the first O-ring 8 and the second O-ring 10 needs to be considered, which makes the processing of the valve seat 1 simple.

[0019] Among them, the top of the valve seat 1 is provided with a mounting hole 23 for accommodating the lower shell 3, and the bottom of the inner wall of the valve seat 1 is provided with a water outlet seat 11 that cooperates with the water outlet pipe 9. The water flowing out of the water outlet pipe 9 will flow into the water outlet seat 11 and flow out from the water outlet joint 5. The water outlet seat 11 is connected to the mounting hole 23.

[0020] The two ends of the valve seat 1 are respectively integrally formed with a water inlet joint 6 and a water outlet joint 5 . The water inlet joint 6 is connected to the mounting hole 23 , and the water outlet joint 5 is connected to the water outlet seat 11 .

[0021] Among them, a slot 20 is provided on the outer side of the lower shell 3, and a hook 19 is provided on the outer side of the upper shell 2 to cooperate with the slot 20. The slot 20 and the hook 19 are used to fix the upper shell 2 and the lower shell 3, so that the solenoid valve body becomes a whole, which makes it easy to install with the valve seat 1 and easy to disassemble and maintain.

[0022] Among them, through holes 21 are provided at the four corners of the upper shell 2 and the lower shell 3, and screw holes 22 corresponding to the through holes 21 are provided on the valve seat 1. Screws 4 are threadedly connected between the through holes 21 and the screw holes 22, and the screws 4 are used to fix the solenoid valve body and the valve seat 1.

[0023] Specifically, when the moving iron core 13 moves upward under the attraction of the coil 14, the moving iron core 13 cannot directly contact the static iron core 16 due to the obstruction of the diaphragm 18, and the diaphragm 18 can block the magnetic lines of force, thereby preventing the moving iron core 13 and the static iron core 16 from sticking together, ensuring that the solenoid valve can work normally. When the solenoid valve body needs to be disassembled and maintained, it is only necessary to unscrew the screws 4 to separate the solenoid valve body from the valve seat 1, and disassembly and assembly are very convenient.

[0024] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0026] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pulse solenoid valve with a compact structure, comprising a valve seat (1), and a solenoid valve body mounted on the valve seat (1), wherein the solenoid valve body comprises an upper shell (2) and a lower shell (3), and is characterized in that: A coil support (15) is installed inside the upper shell (2), a coil (14) is wound around the outside of the coil support (15), a static iron core (16) is fixedly installed in the middle of the coil support (15), a step (7) is provided in the middle of the coil support (15), a spacer (18) is installed between the step (7) and the static iron core (16), a moving iron core (13) is slidably installed in the middle of the coil support (15) and below the spacer (18), a receiving groove (17) is provided on the top of the moving iron core (13), a spring (12) is installed inside the receiving groove (17), a sealing member (24) is movably installed at the bottom of the moving iron core (13), a water outlet pipe (9) is provided at the bottom of the lower shell (3), a second O-ring (10) is sleeved on the outside of the water outlet pipe (9), and a first O-ring (8) is sleeved on the outside of the lower shell (3).

2. A compact pulse solenoid valve according to claim 1, characterized in that: The top of the valve seat (1) is provided with a mounting hole (23) for accommodating the lower shell (3), and the bottom of the inner wall of the valve seat (1) is provided with a water outlet seat (11) that matches the water outlet pipe (9), and the water outlet seat (11) is communicated with the mounting hole (23).

3. A compact pulse solenoid valve according to claim 1, characterized in that: A water inlet joint (6) and a water outlet joint (5) are integrally formed at both ends of the valve seat (1), the water inlet joint (6) being in communication with the mounting hole (23), and the water outlet joint (5) being in communication with the water outlet seat (11).

4. A compact pulse solenoid valve according to claim 1, characterized in that: A card slot (20) is provided on the outer side of the lower shell (3), and a card hook (19) matching the card slot (20) is provided on the outer side of the upper shell (2).

5. The compact pulse solenoid valve according to claim 1, characterized in that: Through holes (21) are provided at the four corners of the upper shell (2) and the lower shell (3); screw holes (22) corresponding to the through holes (21) are provided on the valve seat (1); screws (4) are threadedly connected between the through holes (21) and the screw holes (22).

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