Step-by-step direct-acting electromagnetic valve

Abstract

The utility model discloses a step-by-step direct-acting electromagnetic valve, which relates to the technical field of electromagnetic valves and comprises a valve body, an electromagnetic coil is mounted on the upper portion of the inner wall of the valve body, a pilot valve is arranged on the lower portion of the valve body, and a valve core is arranged on the inner wall of the electromagnetic coil. A sealing assembly used for strengthening sealing is installed on the lower portion of the valve element, the sealing assembly comprises a rubber pad, the rubber pad is installed on the upper portion of the inner wall of the valve body, a sealing pipe is installed on the top face of the rubber pad, and a rubber ring is installed on the top face of the sealing pipe. Friction and abrasion between the valve element and the sealing assembly are reduced through the design of sliding sealing and the blocking gasket, so that the service life of the electromagnetic valve is prolonged, the sealing performance of the electromagnetic valve is remarkably improved through the rubber pad, the sealing pipe, the rubber ring and the inner sealing pipe of a multi-sealing system, fluid leakage is effectively prevented, and the service life of the electromagnetic valve is prolonged. And stable operation of the electromagnetic valve is ensured.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, specifically a step-by-step direct-acting electromagnetic valve. Background Technology

[0002] The working principle of the step-by-step direct-acting solenoid valve combines the advantages of both direct-acting and pilot-operated solenoid valves. When the coil is energized, the electromagnetic force first actuates the pilot valve, changing the pressure balance across the main valve core. Subsequently, under the action of electromagnetic force and pressure differential, the main valve core moves upward, opening the main valve for media flow.

[0003] Existing step-by-step direct-acting solenoid valves, where the sealing material is tightly fitted between the valve core's outer surface and the spacer, may not experience leakage in the short term. However, with repeated use, wear and tear can lead to insufficient sealing performance and fluid leakage. This can affect system stability and safety, and may even cause equipment damage or environmental pollution. Utility Model Content

[0004] This invention provides a step-by-step direct-acting solenoid valve with multiple sealing guarantees and the advantage of preventing leakage damage. It addresses the problem that existing step-by-step direct-acting solenoid valves, where the sealing material is tightly fitted between the valve core's outer surface and the spacer, may not cause leakage in the short term, but wear and tear after repeated use leads to insufficient sealing performance and fluid leakage. This affects system stability and safety, and may even cause equipment damage or environmental pollution.

[0005] To achieve multiple sealing guarantees and prevent leakage damage to the solenoid valve, this utility model provides the following technical solution: a step-by-step direct-acting solenoid valve, comprising a valve body, an electromagnetic coil installed on the upper part of the inner wall of the valve body, a pilot valve provided at the lower part of the valve body, a valve core provided on the inner wall of the electromagnetic coil, and a sealing assembly for enhancing sealing installed at the lower part of the valve core, wherein: the sealing assembly includes a rubber gasket, the rubber gasket is installed on the upper part of the inner wall of the valve body, a sealing tube is installed on the top surface of the rubber gasket, a rubber ring is installed on the top surface of the sealing tube, an inner sealing tube is provided in the middle of the rubber ring, an isolation chamber is formed between the rubber ring and the inner sealing tube, a separation chamber is formed between the sealing tube and the upper inner wall of the valve body, a drain pipe is installed on the inner wall of the separation chamber, and a barrier gasket is installed at one end of the valve core.

[0006] In a preferred embodiment of this invention, the upper inner wall of the valve body is fixedly connected to the outer surface of the electromagnetic coil, the inner wall of the pilot valve is slidably connected to the outer surface of the valve core, and the outer surface of the valve core is slidably connected to the upper inner wall of the valve body.

[0007] In a preferred embodiment of this utility model, the outer surface of the rubber pad is fixedly connected to the upper inner wall of the valve body, the bottom surface of the sealing tube is fixedly connected to the top surface of the rubber pad, and the bottom surface of the sealing tube is fixedly connected to the top surface of the inner wall of the rubber ring.

[0008] As a preferred embodiment of this utility model, the top surface of the rubber ring is in close contact with the bottom surface of the inner wall of the valve body, the inner wall of the inner sealing tube is slidably connected to the outer surface of the valve core, and the top surface of the inner sealing tube is fixedly connected to the top surface of the inner wall of the valve body.

[0009] As a preferred embodiment of this utility model, the bottom surface of the inner sealing tube is fixedly connected to the top surface of the rubber pad, the separation chamber is used to store fluid that may leak, and the outer surface of the drain pipe is fixedly connected to the inner wall of the valve body.

[0010] In a preferred embodiment of this utility model, the inner wall of the drain pipe is in communication with the inner wall of the separation chamber, the outer surface of the barrier gasket is in fixed contact with the inner wall of the rubber pad, and the inner wall of the barrier gasket is slidably connected with the outer surface of the valve core.

[0011] Compared with the prior art, this utility model provides a step-by-step direct-acting solenoid valve, which has the following beneficial effects:

[0012] This step-by-step direct-acting solenoid valve reduces friction and wear between the valve core and sealing components through the design of sliding seals and barrier gaskets, thereby extending the service life of the solenoid valve. The multi-seal system, consisting of rubber gaskets, sealing tubes, rubber rings, and inner sealing tubes, significantly improves the sealing performance of the solenoid valve, effectively preventing fluid leakage and ensuring stable operation of the solenoid valve. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of this utility model from another angle;

[0016] Figure 4 This is a schematic diagram of the connection structure of the valve core part of this utility model;

[0017] Figure 5 This utility model provides Figure 3 Enlarged schematic diagram of part A in the middle.

[0018] In the diagram: 1. Valve body; 2. Solenoid coil; 3. Pilot valve; 4. Valve core; 5. Sealing assembly; 6. Rubber gasket; 7. Sealing tube; 8. Rubber ring; 9. Isolation chamber; 10. Inner sealing tube; 11. Separation chamber; 12. Drain pipe; 13. Barrier gasket. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1

[0021] Please see Figures 1-2 This utility model discloses a step-by-step direct-acting solenoid valve, including a valve body 1, an electromagnetic coil 2 installed on the upper part of the inner wall of the valve body 1, a pilot valve 3 provided at the lower part of the valve body 1, a valve core 4 provided on the inner wall of the electromagnetic coil 2, and a sealing assembly 5 for strengthening the seal installed at the lower part of the valve core 4. The sealing assembly 5 includes a rubber gasket 6, which is installed on the upper part of the inner wall of the valve body 1. A sealing tube 7 is installed on the top surface of the rubber gasket 6, and a rubber ring 8 is installed on the top surface of the sealing tube 7. An inner sealing tube 10 is provided in the middle of the rubber ring 8, and an isolation chamber 9 is formed between the rubber ring 8 and the inner sealing tube 10. A separation chamber 11 is formed between the sealing tube 7 and the upper inner wall of the valve body 1. A drain pipe 12 is installed on the inner wall of the separation chamber 11, and a barrier gasket 13 is installed at one end of the valve core 4.

[0022] The upper inner wall of valve body 1 is fixedly connected to the outer surface of electromagnetic coil 2, the inner wall of pilot valve 3 is slidably connected to the outer surface of valve core 4, and the outer surface of valve core 4 is slidably connected to the upper inner wall of valve body 1.

[0023] The outer surface of the rubber pad 6 is fixedly connected to the upper inner wall of the valve body 1, the bottom surface of the sealing tube 7 is fixedly connected to the top surface of the rubber pad 6, and the bottom surface of the sealing tube 7 is fixedly connected to the top surface of the inner wall of the rubber ring 8.

[0024] When the electromagnetic coil 2 receives an energizing signal, it generates a magnetic field. This magnetic field attracts the valve core 4, causing it to move downwards. During the movement of the valve core 4, its outer surface comes into close contact with and slides against the inner wall of the inner sealing tube 10. This design ensures a tight seal while reducing friction and wear through sliding.

[0025] Example 2

[0026] Based on the above embodiment 1, please refer to Figures 3-5The top surface of the rubber ring 8 is in close contact with the bottom surface of the inner wall of the valve body 1, the inner wall of the inner sealing tube 10 is slidably connected to the outer surface of the valve core 4, and the top surface of the inner sealing tube 10 is fixedly connected to the top surface of the inner wall of the valve body 1.

[0027] The bottom surface of the inner sealing tube 10 is fixedly connected to the top surface of the rubber pad 6. The separation chamber 11 is used to store fluid that may leak. The outer surface of the drain pipe 12 is fixedly connected to the inner wall of the valve body 1.

[0028] The inner wall of the drain pipe 12 is in communication with the inner wall of the separation chamber 11. The outer surface of the barrier gasket 13 is in fixed contact with the inner wall of the rubber pad 6. The inner wall of the barrier gasket 13 is slidably connected with the outer surface of the valve core 4.

[0029] The barrier gasket 13 moves with the valve core 4 and is located between the valve core 4 and the sealing assembly 5, further enhancing the sealing effect. Once the valve core 4 is in place, it opens or closes the fluid passage, depending on the specific design of the solenoid valve. This allows or prevents fluid from passing through the solenoid valve. If fluid attempts to penetrate through the sealing assembly 5, the rubber gasket 6, sealing tube 7, rubber ring 8, and inner sealing tube 10 together form a multi-layer sealing system, ensuring that fluid does not leak to the outside of the solenoid valve.

[0030] The working principle and usage of this utility model are as follows: When the electromagnetic coil 2 receives an energizing signal, it generates a magnetic field. This magnetic field attracts the valve core 4, causing it to move downwards.

[0031] Sliding seal: During the movement of the valve core 4, its outer surface is in close contact with and slides against the inner wall of the inner sealing tube 10. This design ensures sealing while reducing friction and wear through sliding.

[0032] Barrier gasket coordination: Simultaneously, the barrier gasket 13 moves with the valve core 4, positioned between the valve core 4 and the sealing assembly 5, further enhancing the sealing effect. Once the valve core 4 is in place, it opens or closes the fluid passage, depending on the specific design of the solenoid valve. This allows or prevents fluid from passing through the solenoid valve. If fluid attempts to penetrate through the sealing assembly 5, the rubber gasket 6, sealing tube 7, rubber ring 8, and inner sealing tube 10 together form a multi-layer sealing system, ensuring that fluid does not leak to the outside of the solenoid valve.

[0033] Separation chamber and drain: If, for some reason, a small amount of fluid seeps into the separation chamber 11, this fluid can be safely discharged through the drain pipe 12, thereby avoiding damage to the internal structure of the solenoid valve.

Claims

1. A step-by-step direct-acting solenoid valve, comprising a valve body (1), wherein an electromagnetic coil (2) is mounted on the upper part of the inner wall of the valve body (1), characterized in that: A pilot valve (3) is provided at the lower part of the valve body (1), and a valve core (4) is provided on the inner wall of the electromagnetic coil (2). A sealing assembly (5) for strengthening the seal is installed at the lower part of the valve core (4), wherein: The sealing assembly (5) includes a rubber gasket (6), which is installed on the upper part of the inner wall of the valve body (1). A sealing tube (7) is installed on the top surface of the rubber gasket (6), and a rubber ring (8) is installed on the top surface of the sealing tube (7). An inner sealing tube (10) is provided in the middle of the rubber ring (8). An isolation chamber (9) is formed between the rubber ring (8) and the inner sealing tube (10). A separation chamber (11) is formed between the sealing tube (7) and the upper inner wall of the valve body (1). A drain pipe (12) is installed on the inner wall of the separation chamber (11). A barrier gasket (13) is installed at one end of the valve core (4).

2. The step-by-step direct-acting solenoid valve according to claim 1, characterized in that: The upper inner wall of the valve body (1) is fixedly connected to the outer surface of the electromagnetic coil (2), the inner wall of the pilot valve (3) is slidably connected to the outer surface of the valve core (4), and the outer surface of the valve core (4) is slidably connected to the upper inner wall of the valve body (1).

3. A step-by-step direct-acting solenoid valve according to claim 2, characterized in that: The outer surface of the rubber pad (6) is fixedly connected to the upper inner wall of the valve body (1), the bottom surface of the sealing tube (7) is fixedly connected to the top surface of the rubber pad (6), and the bottom surface of the sealing tube (7) is fixedly connected to the top surface of the inner wall of the rubber ring (8).

4. A step-by-step direct-acting solenoid valve according to claim 2, characterized in that: The top surface of the rubber ring (8) is in close contact with the bottom surface of the inner wall of the valve body (1), the inner wall of the inner sealing tube (10) is slidably connected to the outer surface of the valve core (4), and the top surface of the inner sealing tube (10) is fixedly connected to the top surface of the inner wall of the valve body (1).

5. A step-by-step direct-acting solenoid valve according to claim 1, characterized in that: The bottom surface of the inner sealing tube (10) is fixedly connected to the top surface of the rubber pad (6), the separation chamber (11) is used to store fluid that may leak, and the outer surface of the drain pipe (12) is fixedly connected to the inner wall of the valve body (1).

6. A step-by-step direct-acting solenoid valve according to claim 5, characterized in that: The inner wall of the drain pipe (12) is in communication with the inner wall of the separation chamber (11), the outer surface of the barrier gasket (13) is in fixed contact with the inner wall of the rubber pad (6), and the inner wall of the barrier gasket (13) is slidably connected with the outer surface of the valve core (4).

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