A high-safety air electromagnetic switching valve

Abstract

This utility model discloses a high-safety air electromagnetic switch valve, belonging to the field of electromagnetic switch valve technology. It aims to solve the problem that most existing air electromagnetic switch valves utilize electromagnetic attraction or spring mechanical force to complete the switching action. When this structure is used in critical parts, spring mechanical fatigue, reduced elasticity, spring breakage, or circuit failure inevitably lead to malfunctions. The key technical points include a valve body with a second end cap installed at one end. An electromagnetic housing is installed on the outer surface of the second end cap, and two iron cores are installed inside the electromagnetic housing. Coils are wound around the outside of the iron cores. This achieves improved device reliability, allowing it to maintain a single state for extended periods. Even when springs and circuits may fail, its basic function remains unaffected during sudden power outages or other malfunctions, making it safe for use in critical parts control.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic switch valve technology, and in particular to a high-safety air electromagnetic switch valve. Background Technology

[0002] The core principle of an electromagnetic switch valve is to use electromagnetic force to attract the moving structure, thereby driving the internal structure to move and achieve the opening and closing operation. Electromagnetic switch valves have a wide range of applications, and their ability to be remotely controlled greatly enhances their irreplaceable role in high-risk locations.

[0003] Most existing air solenoid valves use electromagnetic attraction or spring mechanical force to complete the switching action. When this structure is used in critical parts, mechanical fatigue of the spring, loss of elasticity, spring breakage, circuit failure, etc., cannot prevent the air solenoid valve from malfunctioning. Utility Model Content

[0004] The purpose of this invention is to provide a high-safety air electromagnetic switch valve that can improve the reliability of the device. Even when the spring and circuit may fail, its basic function is not affected by sudden power outages or other faults, and it can be safely used for the control of critical parts.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A high-safety air electromagnetic switch valve includes a valve body, a second end cap installed at one end of the valve body, an electromagnetic housing installed on the outer surface of the second end cap, two iron cores installed inside the electromagnetic housing, coils wound around the outside of the iron cores, a through hole provided at the central axis of the iron cores, and a sliding sleeve snapped into the through hole, a valve stem slidingly passing through the sliding hole of the sliding sleeve, and a permanent magnet fixedly connected to the outside of the valve stem, the permanent magnet being located between the two iron cores.

[0007] By adopting the above technical solution, effective electromagnetic motion can be achieved, stable switching operation can be realized, and the original state can be maintained in the event of an emergency, thus ensuring high safety.

[0008] Furthermore, a first end cap is installed at the other end of the valve body, and an air outlet is provided at the middle position of the first end cap.

[0009] By adopting the above technical solution, the gas inside the valve body can be effectively guided and discharged.

[0010] Furthermore, the valve stem and the air outlet share a common central axis, and a sealing block is installed at one end of the valve stem. The sealing block is located inside the valve body and corresponds to the position of the air outlet.

[0011] By adopting the above technical solution, the valve stem can be used to move the sealing block, and the sealing block can be used to control the port of the air outlet.

[0012] Furthermore, an air inlet is provided on the side surface of the valve body.

[0013] By adopting the above technical solution, it is ensured that the control gas can be introduced into the interior of the valve body.

[0014] Furthermore, sealing rings are provided between the second end cap and the valve body, and between the first end cap and the valve body, and a junction box is installed on the side surface of the electromagnetic housing.

[0015] By adopting the above technical solution, it is convenient to perform wiring operations on the coil.

[0016] Furthermore, a plastic retainer is provided between the two iron cores, and multiple through holes are provided on the side surface of the plastic retainer.

[0017] By adopting the above technical solution, the position of the two iron cores is ensured to be stable.

[0018] In summary, the beneficial technical effects of this utility model are as follows:

[0019] This invention features two iron cores inside an electromagnetic housing, with coils wound around the outside of each core. A permanent magnet is positioned between the two cores and fixed to the outside of the valve stem. Therefore, when switching the electromagnetic valve, only one coil needs power. After the circuit is switched, the magnetism at the end of the previously magnetic iron core disappears, while the end of the other core becomes magnetic. The magnetic core then attracts the permanent magnet. Because the attraction of the magnetic core to the permanent magnet is greater than the attraction between the permanent magnet and the non-magnetic core, the permanent magnet shifts position, moving closer to and adhering to the end of the magnetic core. As the permanent magnet moves, when it passes... At the midpoint of the two iron cores, the combined force of the attraction between the permanent magnet and the iron core, and the attraction of the magnetic iron core to the permanent magnet, improves the stability of the attraction between the permanent magnet and the magnetic iron core. The movement of the permanent magnet can drive the valve stem to move axially, thereby realizing the opening and closing operation of the electromagnetic switch valve. When there is a sudden power outage, the magnetic poles at the ends of the iron cores disappear. At this time, relying on the original magnetism of the permanent magnet, it can be attracted to the original ends of the iron cores and maintain its original state. This replaces the traditional spring structure, thus avoiding the fatigue and damage of the spring due to long-term maintenance in a single state, and the failure of the electromagnetic switch valve in the event of a sudden situation. The safety of this electromagnetic switch valve is significantly improved. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural perspective view of the present invention;

[0021] Figure 2 This is a diagram of the internal structure of this utility model.

[0022] In the diagram: 1. First end cap; 2. Valve body; 3. Sealing block; 4. Second end cap; 5. Electromagnetic housing; 6. Air outlet; 7. Junction box; 8. Iron core; 9. Coil; 10. Valve stem; 11. Permanent magnet; 12. Plastic retainer; 13. Sliding sleeve; 14. Air inlet. Detailed Implementation

[0023] The method of this utility model will be further described in detail below with reference to the accompanying drawings.

[0024] Reference Figure 1 , Figure 2A high-safety air electromagnetic switch valve includes a valve body 2, a second end cap 4 installed at one end of the valve body 2, an electromagnetic housing 5 installed on the outer surface of the second end cap 4, two iron cores 8 installed inside the electromagnetic housing 5, coils 9 wound around the outside of the iron cores 8, a through hole provided at the central axis of the iron cores 8, and a sliding sleeve 13 snapped into the through hole, a valve stem 10 slidingly passing through the sliding hole of the sliding sleeve 13, a permanent magnet 11 fixedly connected to the outside of the valve stem 10, the permanent magnet 11 being located between the two iron cores 8, and a... A plastic retainer 12 is provided between the two iron cores 8 in the junction box 7. Multiple through holes are provided on the side surface of the plastic retainer 12. Two iron cores 8 are arranged inside the electromagnetic housing 5, and coils 9 are wound around the outside of the iron cores 8. A permanent magnet 11 is placed between the two iron cores 8 and is sleeved and fixed to the outside of the valve stem 10. Therefore, when the electromagnetic switch valve is switched, only one coil 9 needs to be powered. When the circuit is switched, the magnetism at the end of the iron core 8 that was originally magnetic disappears, while the end of the other iron core 8 becomes magnetic. When the magnetized iron core 8 begins to attract the permanent magnet 11, the attraction between the magnetic iron core 8 and the permanent magnet 11 is greater than the attraction between the permanent magnet 11 and the non-magnetic iron core 8. Therefore, the permanent magnet 11 will change position, moving closer to and adhering to the end of the magnetic iron core 8. During the movement of the permanent magnet 11, when it passes the midpoint between the two iron cores 8, the combined force of the attraction between the permanent magnet 11 and the iron core 8, and the attraction between the magnetic iron core 8 and the permanent magnet 11, increases the attraction between the permanent magnet 11 and the magnetic iron core 8. Adsorption stability: The movement of the permanent magnet 11 can drive the valve stem 10 to move axially, thereby realizing the opening and closing operation of the electromagnetic switch valve. When there is a sudden power failure, the magnetic poles at the end of the iron core 8 disappear. At this time, relying on the original magnetism of the permanent magnet 11, it can be attracted to the original end of the iron core 8, thus maintaining the original state. This replaces the traditional spring structure, thereby avoiding the fatigue and damage of the spring due to long-term maintenance in a single state, and the failure of the electromagnetic switch valve in the event of a sudden situation. The safety of the electromagnetic switch valve is significantly improved.

[0025] Reference Figure 2The valve body 2 has a first end cap 1 installed at the other end. An air outlet 6 is provided at the middle position of the first end cap 1. The valve stem 10 and the air outlet 6 share the same central axis. A sealing block 3 is installed at one end of the valve stem 10. The sealing block 3 is located inside the valve body 2 and corresponds to the position of the air outlet 6. Sealing rings are provided between the second end cap 4 and the valve body 2, and between the first end cap 1 and the valve body 2. An air inlet 14 is provided on the side surface of the valve body 2. When in use, the external controlled gas enters the interior of the valve body 2 through the air inlet 14 and then exits from the air outlet 6. When the valve is closed, the valve stem 10 drives the sealing block 3 to seal the port of the air outlet 6. At this time, the gas flow channel can be effectively blocked. Since the air pressure inside the valve body 2 is greater than the air pressure on the side of the air outlet 6, the sealing block 3 can still maintain its original state in the event of an emergency.

[0026] Working principle: In use, the electromagnetic switch valve is first installed in the designated position. The external controlled gas enters the valve body 2 through the inlet 14 and then exits from the outlet 6. When the switch valve is closed, the valve stem 10 drives the sealing block 3 to seal the outlet 6, effectively blocking the gas flow channel. Since the air pressure inside the valve body 2 is greater than the air pressure on the outlet 6 side, the sealing block 3 can maintain its original state in case of an emergency. When the electromagnetic switch valve is opened or closed, only one coil 9 needs to be powered. After the circuit is switched, the magnetism at the end of the originally magnetic iron core 8 disappears, while the end of the other iron core 8 becomes magnetic. At this time, the magnetic iron core 8 begins to attract the permanent magnet 11. Since the attraction of the magnetic iron core 8 to the permanent magnet 11 is greater than the attraction between the permanent magnet 11 and the non-magnetic iron core 8, therefore... The permanent magnet 11 undergoes a positional change, approaching and adsorbing onto the end of the magnetic iron core 8. During the movement of the permanent magnet 11, when it passes the midpoint between the two iron cores 8, the combined force of the adsorption force between the permanent magnet 11 and the iron core 8 and the magnetic iron core 8 on the permanent magnet 11 improves the stability of the adsorption between the permanent magnet 11 and the magnetic iron core 8. The movement of the permanent magnet 11 can drive the valve stem 10 to move axially, thereby realizing the opening and closing operation of the electromagnetic switch valve. When there is a sudden power outage, the magnetic poles at the end of the iron core 8 disappear. At this time, relying on the original magnetism of the permanent magnet 11, it can be adsorbed onto the original end of the iron core 8, thus maintaining the original state. This replaces the traditional spring structure, thereby avoiding the fatigue and damage of the spring due to long-term maintenance in a single state, and the failure of the electromagnetic switch valve in the event of a sudden situation. The safety of this electromagnetic switch valve is significantly improved.

[0027] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high safety air electromagnetic on-off valve comprising a valve body (2), characterized in that: A second end cap (4) is installed at one end of the valve body (2). An electromagnetic housing (5) is installed on the outer surface of the second end cap (4). Two iron cores (8) are installed inside the electromagnetic housing (5). A coil (9) is wound around the outside of the iron core (8). A through hole is provided at the central axis position of the iron core (8), and a sliding sleeve (13) is snapped into the inside of the through hole. A valve stem (10) slides through the sliding hole of the sliding sleeve (13). A permanent magnet (11) is fixedly connected to the outside of the valve stem (10). The permanent magnet (11) is located between the two iron cores (8).

2. A high safety air electromagnetic on-off valve according to claim 1, characterized in that: The other end of the valve body (2) is fitted with a first end cap (1), and an air outlet (6) is provided at the middle position of the first end cap (1).

3. A high safety air electromagnetic on-off valve according to claim 2, characterized in that: The valve stem (10) and the air outlet (6) share the same central axis. A sealing block (3) is installed at one end of the valve stem (10). The sealing block (3) is located inside the valve body (2) and corresponds to the position of the air outlet (6).

4. The high safety air electromagnetic on-off valve according to claim 1, characterized in that: An air inlet (14) is provided on the side surface of the valve body (2).

5. A high safety air electromagnetic on-off valve according to claim 2, characterized in that: A sealing ring is provided between the second end cap (4) and the valve body (2), and between the first end cap (1) and the valve body (2). A junction box (7) is installed on the side surface of the electromagnetic housing (5).

6. The high safety air electromagnetic on-off valve according to claim 1, characterized in that: A plastic retainer (12) is provided between the two iron cores (8), and a plurality of through holes are provided on the side surface of the plastic retainer (12).

Images