Pulse solenoid valve

Abstract

The present invention relates to a pulse solenoid valve, including a valve cover, a moving iron core and a valve seat; the valve cover is filled with coils, permanent magnets are arranged on both sides of the valve cover, a coil is arranged between the two permanent magnets, and the moving iron core is located in a circular through hole in the center of the valve cover; a T-shaped head is arranged at the lower end of the moving iron core, a rubber head with a cavity inside is slidably arranged on the T-shaped head, and a small spring is arranged between the T-shaped head and the rubber head; the upper end of the moving iron core has a mounting seat, a large spring is sleeved on the mounting seat, and the large spring is against the valve cover; the valve seat is located below the rubber head, and a pressure relief hole and a limit gasket are arranged on the valve seat, and the center of the limit gasket is a circular through hole. The present invention omits the static iron core and the connector between the rubber head and the moving iron core, and extends the moving iron core, thereby enhancing the magnetic force of the moving iron core to make the performance of the electromagnetic valve more stable, and also solves the problem of large cumulative tolerance of the entire product size caused by the static iron core, and facilitates the overall installation.

Description

Technical Field

[0001] The invention relates to a pulse electromagnetic valve, belonging to the electrical field. Background Art

[0002] The pulse solenoid valve inputs a pulse signal into the coil inside the solenoid valve body through a wire. The pulse valve is controlled by the output signal of the pulse jet controller. The pulse valve is opened and closed by bending and deforming the rubber diaphragm based on the pressure changes in the two air chambers before and after the valve.

[0003] The existing pulse solenoid valve has a static iron core. The moving iron core and the static iron core are attracted, and the pilot valve port is opened. The existence of the static iron core will make the cumulative tolerance of the entire product size larger, and if the connecting parts between the rubber head and the moving iron core are not installed correctly, low-pressure dripping will occur, making installation difficult. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned disadvantages and provide a pulse solenoid valve.

[0005] The object of the present invention is achieved in that:

[0006] A pulse electromagnetic valve is characterized by comprising a valve cover, a moving iron core and a valve seat;

[0007] The valve cover is full of coils, and permanent magnets are arranged on both sides of the valve cover, and a coil is arranged between the two permanent magnets. The center of the valve cover has a circular through hole, and the moving core iron is located in the circular through hole; the lower end of the moving core iron is provided with a T-shaped head, and a rubber head is slidably arranged on the T-shaped head, and a small spring is arranged between the T-shaped head and the rubber head, and the inside of the rubber head is a cavity; the upper end of the moving core iron has a mounting seat, and a large spring is sleeved on the mounting seat, and the large spring is against the valve cover;

[0008] The valve seat is located below the rubber head. A pressure relief hole and a limit gasket are provided on the valve seat. The limit gasket is located above the pressure relief hole. The center of the limit gasket is a circular through hole.

[0009] Furthermore, the coil, the limiting gasket and the pressure relief hole form a closed cavity through the sealing ring.

[0010] Furthermore, the large spring is distributed on the moving iron core in an "S"-shaped spiral.

[0011] Furthermore, the circular through hole in the center of the limiting gasket is larger than the outer diameter of the rubber head.

[0012] Furthermore, the outer diameter of the limiting gasket is larger than the diameter of the pressure relief hole and smaller than the width of the valve seat.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The static iron core is omitted, and the moving iron core is extended, which enhances the magnetic force of the moving iron core and makes the performance of the solenoid valve more stable. It also solves the problem of large cumulative tolerance of the entire product size caused by the static iron core.

[0015] 2. The connector between the rubber head and the moving iron core is omitted, so that the moving iron core acts directly on the rubber head, which solves the problem of large cumulative tolerance of the entire product size caused by the connector and low-pressure dripping caused by improper installation of the connector, and also facilitates the overall installation.

[0016] A pulse solenoid valve of the present invention optimizes the wax mold forming scheme, that is, optimizes the wax mold mold and tooling design scheme, splits a multi-linked blade into multiple blades and edge plate structures for welding, and develops a product with qualified size and high surface quality at a relatively low cost and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a pulse solenoid valve of the present invention.

[0018] In the figure:

[0019] Valve cover 1, permanent magnet 2, coil 3, large spring 4, mounting seat 5, moving iron core 6, small spring 7, T-head 8, rubber head 9, pressure relief hole 10, valve seat 11, limit gasket 12. DETAILED DESCRIPTION

[0020] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0021] See also Figure 1 ,

[0022] The present invention discloses a pulse solenoid valve, wherein a valve cover 1 is filled with coils 3, a T-shaped head 8 is arranged at the lower end of a moving core iron 6, a rubber head 9 is sleeved on the T-shaped head 8, the rubber head 9 can slide up and down on the T-shaped head 8, a small spring 7 is arranged between the T-shaped head 8 and the rubber head 9, and a cavity is provided inside the rubber head 9; a mounting seat 5 is provided at the upper end of the moving core iron 6, a large spring 4 is sleeved on the mounting seat 5, the large spring 4 is abutted against the valve cover 1, and the mounting seat 5 is directly in contact with the valve cover 1 when it is attracted, and a static iron core is omitted; permanent magnets 2 are respectively arranged on both sides of the inside of the valve cover 1, a coil 3 is arranged between the two permanent magnets 2, a circular through hole is provided at the center of the valve cover 1, and the moving core iron 6 is located in the circular through hole.

[0023] The valve seat 11 is located below the rubber head 9. A pressure relief hole 10 and a limit gasket 12 are provided on the valve seat 11. The limit gasket 12 is located above the pressure relief hole 10. The center of the limit gasket 12 is a circular through hole, which is larger than the outer diameter of the rubber head 9. The outer diameter of the limit gasket 12 is larger than the diameter of the pressure relief hole 10 and smaller than the width of the valve seat 11.

[0024] The coil 3, the limiting gasket 12 and the pressure relief hole 10 form a closed cavity through the sealing ring.

[0025] The large spring 4 is distributed on the moving iron core 6 in an "S"-shaped spiral.

[0026] Working principle:

[0027] The extended moving iron core 6 is located in the circular through hole of the valve cover 1, and the valve cover 1 is installed on the valve seat 11. The upper end of the large spring 4 is against the top of the valve cover 1. The large spring 4 is compressed to generate elastic force, so that the rubber head 9 presses against the pressure relief hole 10. At this time, the coil 3, the limit gasket 12 and the pressure relief hole 10 form a closed cavity; since the interior of the rubber head 9 is a cavity, under the action of external force and the small spring 7, the rubber head 9 can slide up and down on the T-head 8; when a pulse signal is given to the pulse solenoid valve, the coil 3 in the valve cover 1 forms a magnetic field, and under the action of the permanent magnet 2, the moving iron core 6 generates a suction force to the valve cover 1, and is sucked on the valve cover 1, and the rubber head 9 leaves the pressure relief hole 10, the pressure relief hole 10 can be relieved, and the induction faucet will discharge water. When a reverse pulse signal is given to the pulse solenoid valve, the coil 3 in the valve cover 1 forms a reverse magnetic field. Under the action of the permanent magnet 2, the moving iron core 6 generates a repulsive force to the valve cover 1. Under the thrust of the large spring 4, the lower end of the moving iron core 6 abuts against the limit gasket 12. Under the elastic force of the small spring 7, the rubber head 9 passes through the center hole of the limit gasket 12 and blocks the pressure relief hole 10. The pressure relief hole 10 cannot relieve pressure and forms a closed cavity, so that the induction faucet is turned off.

[0028] The present invention omits the static iron core and lengthens the moving iron core 6, thereby enhancing the magnetic force of the moving iron core to make the pulse solenoid valve more stable and solving the problem of large cumulative tolerance of the entire product size caused by the static iron core.

[0029] The present invention omits the connector between the rubber head 9 and the moving iron core 6, so that the T-shaped head 8 of the moving iron core 6 directly acts on the rubber head 9, and then the rubber head 9 acts on the pressure relief hole 10, thereby solving the problem of large cumulative tolerance of the entire product size caused by the connector and low-pressure dripping caused by improper installation of the connector, and reducing the production cost of the internal structure.

[0030] In the above embodiments, the present invention is only exemplarily described, but those skilled in the art may make various modifications to the present invention without departing from the spirit and scope of the present invention after reading this patent application.

Claims

1. A pulse solenoid valve, characterized in that: Including valve cover, moving iron core and valve seat; The valve cover is full of coils, and permanent magnets are arranged on both sides of the valve cover, and a coil is arranged between the two permanent magnets. The center of the valve cover has a circular through hole, and the moving core iron is located in the circular through hole; the lower end of the moving core iron is provided with a T-shaped head, and a rubber head is slidably arranged on the T-shaped head, and a small spring is arranged between the T-shaped head and the rubber head, and the inside of the rubber head is a cavity; the upper end of the moving core iron has a mounting seat, and a large spring is sleeved on the mounting seat, and the large spring is against the valve cover; The valve seat is located below the rubber head. A pressure relief hole and a limit gasket are provided on the valve seat. The limit gasket is located above the pressure relief hole. The center of the limit gasket is a circular through hole.

2. A pulse solenoid valve according to claim 1, characterized in that: The coil, the limit gasket and the pressure relief hole form a closed cavity through the sealing ring.

3. A pulse solenoid valve according to claim 1, characterized in that: The large spring is distributed in an "S"-shaped spiral on the moving iron core.

4. A pulse solenoid valve according to claim 1, characterized in that: The circular through hole in the center of the limiting gasket is larger than the outer diameter of the rubber head.

5. A pulse solenoid valve according to claim 1, characterized in that: The outer diameter of the limiting gasket is larger than the diameter of the pressure relief hole and smaller than the width of the valve seat.

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