Diaphragm type electromagnetic switch valve structure
By using a diaphragm-type moving iron core and guide sleeve design in the solenoid switch valve, the water vapor and electromagnetic parts are isolated, which solves the problem of slow response of the solenoid valve in low temperature environments, and achieves faster response time and normal operation.
Patent Information
- Application Number
- CN202422144586.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The existing solenoid valves cannot function properly due to water freezing in low temperature environments.
The diaphragm-type solenoid switch valve structure is adopted, and the water vapor and electromagnetic parts of the working chamber are isolated through the design of the diaphragm-type moving iron core and guide sleeve to avoid water freezing affecting the movement of the moving iron core.
In low temperature environments, the response time of the solenoid switch valve is improved, the problem of slow start is avoided, and the normal operation of the solenoid valve is ensured.
Smart Images
Figure CN222992319U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydrogen fuel cell vehicles, and specifically relates to a diaphragm type electromagnetic switch valve structure. Background Technique
[0002] As a clean energy technology, hydrogen fuel cells have received extensive attention. However, the role of solenoid valves in hydrogen fuel cell systems is crucial and needs to meet requirements such as high sealing performance, fast response, and long service life.
[0003] In the existing on-off solenoid valves, water inside will freeze in a low-temperature environment, resulting in slow low-temperature start-up response and affecting the normal operation of the solenoid valve. The freezing of water vapor causes the moving iron core to be unable to move, and there is a problem that the solenoid valve cannot work normally.
[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a diaphragm type electromagnetic switch valve structure is proposed. Content of the Utility Model
[0005] The purpose of the utility model is to provide a diaphragm type electromagnetic switch valve structure to solve the problems proposed in the above background technique.
[0006] To achieve the above purpose, the utility model provides the following technical solution: A diaphragm type electromagnetic switch valve structure includes an electromagnetic switch valve outer cover and an electromagnetic switch valve fixing seat. A rear yoke is arranged on the central inner wall of the electromagnetic switch valve outer cover, and a first sealing ring is arranged inside the electromagnetic switch valve outer cover. The outer wall of the rear yoke is connected with a first sealing ring, and a rubber sealing pad is connected to the bottom outer wall of the first sealing ring. A front yoke is arranged on the bottom outer wall of the rubber sealing pad, and a guide sleeve is connected to the bottom outer wall of the front yoke. The electromagnetic switch valve fixing seat is arranged inside the bottom of the electromagnetic switch valve outer cover, and the outer wall of the guide sleeve is connected with the electromagnetic switch valve fixing seat.
[0007] Further, the bottom outer wall of the front yoke is connected with the electromagnetic switch valve fixing seat, and an electromagnetic switch valve body is arranged inside the electromagnetic switch valve fixing seat.
[0008] Further, the vertical central axis of the electromagnetic switch valve fixing seat is consistent with the vertical central axis of the electromagnetic switch valve body, and the height of the bottom outer wall of the electromagnetic switch valve body is lower than the height of the bottom outer wall of the electromagnetic switch valve fixing seat.
[0009] Further, the top of the electromagnetic switch valve body is connected with the electromagnetic switch valve outer cover, and a second sealing ring is arranged on the middle outer wall of the electromagnetic switch valve body.
[0010] Further, a third sealing ring is connected to the lower outer wall of the electromagnetic switch valve body, and a diaphragm type moving iron core is arranged inside the upper part of the electromagnetic switch valve body.
[0011] Furthermore, a rear yoke iron is connected to the top of the diaphragm type moving iron core, and the diaphragm type moving iron core is arranged inside the outer cover of the electromagnetic switching valve.
[0012] Furthermore, a first sealing ring is arranged on the outer wall of the upper side of the side surface of the diaphragm type moving iron core, and a front yoke iron is arranged on the outer wall of the lower side of the side surface of the diaphragm type moving iron core.
[0013] Furthermore, a solenoid is connected to the outer wall of the right side of the outer cover of the electromagnetic switching valve, and a first sealing ring is connected to the outer wall of the left side of the solenoid.
[0014] The utility model provides a diaphragm type electromagnetic switching valve structure, which has the following beneficial effects:
[0015] 1. For this diaphragm type electromagnetic switching valve structure, when the solenoid is energized, the diaphragm type moving iron core is attracted upward by electromagnetic force against the spring force, and the gas is discharged from the bottom of the electromagnetic switching valve body. When the coil is de-energized, the diaphragm type moving iron core returns downward under the action of the spring force, and the rubber sealing pad plays a sealing role. The opening and closing of the gas path are controlled by the energization and de-energization of the electromagnetic switching valve.
[0016] 2. For this diaphragm type electromagnetic switching valve structure, in a low-temperature environment, when the electromagnetic switching valve starts, the water vapor in the working cavity is in a solidified state, and the diaphragm type moving iron core and the guide sleeve will not freeze together, and the situation of slow start of the electromagnetic valve will not occur. The sealing structure is changed to a diaphragm type, and the diaphragm type seal isolates the electromagnetic part from the tooling cavity, and the water vapor in the working cavity cannot enter the electromagnetic part, effectively improving the response time of the electromagnetic switching valve. Description of the Drawings
[0017] Figure 1 It is a schematic cross-sectional structure diagram of a diaphragm type electromagnetic switching valve structure of the utility model;
[0018] Figure 2 It is a schematic structure diagram of the outer cover of the electromagnetic switching valve of a diaphragm type electromagnetic switching valve structure of the utility model;
[0019] Figure 3 It is a schematic structure diagram of the diaphragm type moving iron core of a diaphragm type electromagnetic switching valve structure of the utility model.
[0020] In the figure: 1. Outer cover of the electromagnetic switching valve; 2. Rear yoke iron; 3. First sealing ring; 4. Rubber sealing pad; 5. Front yoke iron; 6. Guide sleeve; 7. Fixed seat of the electromagnetic switching valve; 8. Body of the electromagnetic switching valve; 9. Second sealing ring; 10. Third sealing ring; 11. Diaphragm type moving iron core; 12. Solenoid. Detailed Embodiments
[0021] The following further describes the embodiments of the present utility model in detail in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.
[0022] As Figures 1-3 shown, a diaphragm type electromagnetic switch valve structure includes an electromagnetic switch valve outer cover 1 and an electromagnetic switch valve fixing seat 7. A rear yoke 2 is provided on the central inner wall of the electromagnetic switch valve outer cover 1, and a first sealing ring 3 is arranged inside the electromagnetic switch valve outer cover 1. The outer wall of the rear yoke 2 is connected to the first sealing ring 3, and a rubber sealing pad 4 is connected to the bottom outer wall of the first sealing ring 3. A front yoke 5 is arranged on the bottom outer wall of the rubber sealing pad 4, and a guide sleeve 6 is connected to the bottom outer wall of the front yoke 5. The electromagnetic switch valve fixing seat 7 is arranged inside the bottom of the electromagnetic switch valve outer cover 1, and the outer wall of the guide sleeve 6 is connected to the electromagnetic switch valve fixing seat 7. The bottom outer wall of the front yoke 5 is connected to the electromagnetic switch valve fixing seat 7, and an electromagnetic switch valve body 8 is arranged inside the electromagnetic switch valve fixing seat 7. The vertical central axis of the electromagnetic switch valve fixing seat 7 is consistent with the vertical central axis of the electromagnetic switch valve body 8, and the height of the bottom outer wall of the electromagnetic switch valve body 8 is lower than the height of the bottom outer wall of the electromagnetic switch valve fixing seat 7. The top of the electromagnetic switch valve body 8 is connected to the electromagnetic switch valve outer cover 1, and a second sealing ring 9 is arranged on the middle outer wall of the electromagnetic switch valve body 8;
[0023] The specific operation is as follows. The enameled wire is wound and welded to the skeleton, and then the coil is secondarily coated with plastic to obtain a solenoid 12. The rear yoke 2, the first sealing ring 3, the rubber sealing pad 4, the front yoke 5, the guide sleeve 6, the diaphragm type moving iron core 11, the electromagnetic switch valve outer cover 1 and the matching spring are assembled. Finally, the assembled electromagnetic switch valve outer cover 1 and the electromagnetic switch valve fixing seat 7 are riveted and pressed tightly. The second sealing ring 9 and the third sealing ring 10 play a sealing role on the outer wall of the electromagnetic switch valve body 8;
[0024] As Figures 1-3 shown, a third sealing ring 10 is connected to the lower outer wall of the electromagnetic switch valve body 8, and a diaphragm type moving iron core 11 is arranged inside the upper part of the electromagnetic switch valve body 8. The top of the diaphragm type moving iron core 11 is connected to the rear yoke 2, and the diaphragm type moving iron core 11 is arranged inside the electromagnetic switch valve outer cover 1. A first sealing ring 3 is arranged on the upper outer wall of the side of the diaphragm type moving iron core 11, and a front yoke 5 is arranged on the lower outer wall of the side of the diaphragm type moving iron core 11. A solenoid 12 is connected to the right outer wall of the electromagnetic switch valve outer cover 1, and a first sealing ring 3 is connected to the left outer wall of the solenoid 12;
[0025] The specific operation is as follows. When the solenoid 12 is energized, the diaphragm type moving iron core 11 is attracted upward by electromagnetic force against the spring force, and the gas is discharged from the bottom 8 of the electromagnetic switch valve body. When the coil is de-energized, the diaphragm type moving iron core 11 returns downward under the action of the spring force. The rubber gasket 4 plays a sealing role, and the opening and closing of the gas circuit are controlled by the energization and de-energization of the electromagnetic switch valve.
[0026] In a low-temperature environment, when the electromagnetic switch valve starts, the water vapor in the working chamber is in a solidified state. The diaphragm type moving iron core 11 and the guide sleeve 6 will not freeze together, and the situation of slow start of the solenoid valve will not occur. The sealing structure is changed to a diaphragm type. The diaphragm type seal isolates the electromagnetic part from the tooling cavity, and the water vapor in the working chamber cannot enter the electromagnetic part, effectively improving the response time of the electromagnetic switch valve.
[0027] In summary, as Figures 1-3 shown, for the structure of the diaphragm type electromagnetic switch valve, during use, first assemble the rear yoke iron 2, the first sealing ring 3, the rubber gasket 4, the front yoke iron 5, the guide sleeve 6, the diaphragm type moving iron core 11, the electromagnetic switch valve housing 1 and the adapted spring. Finally, rivet and press the assembled electromagnetic switch valve housing 1 and the electromagnetic switch valve fixing seat 7 tightly. When the solenoid 12 is energized, the diaphragm type moving iron core 11 is attracted upward by electromagnetic force against the spring force, and the gas is discharged from the bottom 8 of the electromagnetic switch valve body. When the coil is de-energized, the diaphragm type moving iron core 11 returns downward under the action of the spring force. The rubber gasket 4 plays a sealing role, and the opening and closing of the gas circuit are controlled by the energization and de-energization of the electromagnetic switch valve.
[0028] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles of the present invention and its practical application, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A diaphragm type electromagnetic switch valve structure, comprising an electromagnetic switch valve cover (1) and an electromagnetic switch valve fixing seat (7), characterized in that: A rear yoke (2) is arranged on the central inner wall of the electromagnetic switch valve housing (1), and a first sealing ring (3) is arranged inside the electromagnetic switch valve housing (1); the outer wall of the rear yoke (2) is connected to the first sealing ring (3), and the bottom outer wall of the first sealing ring (3) is connected to a rubber sealing pad (4); the bottom outer wall of the rubber sealing pad (4) is provided with a front yoke (5), and the bottom outer wall of the front yoke (5) is connected to a guide sleeve (6); the electromagnetic switch valve fixing seat (7) is arranged inside the bottom of the electromagnetic switch valve housing (1), and the outer wall of the guide sleeve (6) is connected to the electromagnetic switch valve fixing seat (7).
2. A diaphragm type electromagnetic switch valve structure according to claim 1, characterized in that: The outer wall of the bottom of the front yoke iron (5) is connected to an electromagnetic switch valve fixing seat (7), and an electromagnetic switch valve body (8) is arranged inside the electromagnetic switch valve fixing seat (7).
3. The diaphragm type electromagnetic switch valve structure according to claim 1, characterized in that: The vertical center axis of the electromagnetic switch valve fixing seat (7) is consistent with the vertical center axis of the electromagnetic switch valve body (8), and the bottom outer wall height of the electromagnetic switch valve body (8) is lower than the bottom outer wall height of the electromagnetic switch valve fixing seat (7).
4. A diaphragm type electromagnetic switch valve structure according to claim 3, characterized in that: The top of the electromagnetic switch valve body (8) is connected to the electromagnetic switch valve outer cover (1), and the middle outer wall of the electromagnetic switch valve body (8) is provided with a second sealing ring (9).
5. A diaphragm type electromagnetic switch valve structure according to claim 4, characterized in that: The lower outer wall of the electromagnetic switch valve body (8) is connected to a third sealing ring (10), and the upper inner portion of the electromagnetic switch valve body (8) is provided with a diaphragm type moving iron core (11).
6. A diaphragm type electromagnetic switch valve structure according to claim 5, characterized in that: The top of the diaphragm type moving iron core (11) is connected to a back yoke iron (2), and the diaphragm type moving iron core (11) is arranged inside the electromagnetic switch valve outer cover (1).
7. A diaphragm type electromagnetic switch valve structure according to claim 6, characterized in that: A first sealing ring (3) is provided on the upper outer wall of the side surface of the diaphragm type moving iron core (11), and a front yoke iron (5) is provided on the lower outer wall of the side surface of the diaphragm type moving iron core (11).
8. The diaphragm type electromagnetic switch valve structure according to claim 1, characterized in that: The right outer wall of the electromagnetic switch valve housing (1) is connected to a solenoid (12), and the left outer wall of the solenoid (12) is connected to a first sealing ring (3).