Double-redundant seal structure of zero-leakage permanent magnet holding type electromagnetic valve

Abstract

The utility model relates to solenoid valve body technical field especially zero leakage permanent magnet keeps solenoid valve's double redundancy sealing structure, including main part, the top of main part is installed with electromagnetic sealing mechanism, the inside fixed mounting of main part has auxiliary sealing mechanism, and main part includes valve body, and the middle part of valve body is equipped with through -hole, and electromagnetic sealing mechanism includes protection shell, and the inside fixed connection of protection shell has solenoid, and the inside of protection shell is provided with core, and the bottom fixed connection of core has piston, and the bottom fixed connection of piston has first connecting seat, and the bottom fixed connection of first connecting seat has permanent magnet, and auxiliary sealing mechanism includes fixed column, and the inside swing joint of fixed column has moving column, and the top of moving column extends to the top of fixed column, and the top fixed connection of moving column has second connecting seat, and the top fixed connection of second connecting seat has iron sheet. The utility model provides a kind of electromagnetic valve structure with higher sealing reliability and zero leakage performance.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve bodies, and more particularly to a double-redundant sealing structure for a zero-leakage permanent magnet holding solenoid valve. Background Technology

[0002] A solenoid valve is an automated component that uses electromagnetic force to control fluid flow. It alters the internal flow path structure of the valve by generating an electromagnetic field through a solenoid coil, thereby regulating and controlling parameters such as fluid flow rate, pressure, and direction. Its basic structure includes components such as a solenoid coil, an iron core, valve assemblies, a valve seat, and seals.

[0003] The dual-redundant sealing structure of a solenoid valve is a dual sealing mechanism designed to improve the sealing performance of the solenoid valve. Through multiple sealing components and ingenious structural design, it ensures that the solenoid valve can achieve reliable sealing under various operating conditions and effectively prevent leakage. Utility Model Content

[0004] In view of this, the present invention provides a dual-redundant sealing structure for a zero-leakage permanent magnet holding solenoid valve. The main technical problem to be solved is to provide a solenoid valve structure with higher sealing reliability and zero leakage performance.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a double-redundant sealing structure for a zero-leakage permanent magnet holding solenoid valve, comprising a main body, an electromagnetic sealing mechanism mounted on the top of the main body, and an auxiliary sealing mechanism mounted inside the main body. The main body includes a valve body with a through hole in the middle. The electromagnetic sealing mechanism includes a protective shell, which is fixedly mounted on the top of the valve body. An electromagnetic coil is fixedly connected inside the protective shell, and an iron core is disposed inside the protective shell. A piston is fixedly connected to the bottom of the iron core, and the outer surface of the piston is in contact with the inner wall of the protective shell. The piston has a first connecting seat fixedly connected to its bottom, which is located above the through hole. A first spring is provided on the top of the piston. A permanent magnet is fixedly connected to the bottom of the first connecting seat. The auxiliary sealing mechanism includes a fixed column, which is fixedly installed on the inner wall of the valve body. A movable column is movably connected inside the fixed column. The top of the movable column extends above the fixed column. A second connecting seat is fixedly connected to the top of the movable column, which is located below the through hole. An iron plate is fixedly connected to the top of the second connecting seat, and the position of the iron plate corresponds to the position of the permanent magnet.

[0006] By adopting the above technical solution, in use, the electromagnetic sealing mechanism and the auxiliary sealing mechanism can achieve a double sealing effect on the valve body. When the valve body is open, the electromagnetic coil works to control the iron core to move upward, causing the piston to move upward. At this time, the through hole is open, and gas or liquid can pass through the through hole to reach the outlet of the valve body. After passing through the through hole, the gas or liquid will exert downward pressure on the second connecting seat. The second connecting seat will not obstruct the flow of gas or liquid. When the valve body is closed, the electromagnetic coil works to control the iron core to move downward. At this time, the piston moves downward, and the first connecting seat below the piston will seal the upper part of the through hole. Since the permanent magnet also moves downward after the piston moves downward, the iron plate on the lower second connecting seat will be attracted, causing the second connecting seat to move upward under the action of magnetic force. At this time, the second connecting seat can seal the lower part of the through hole. The cooperation of the first connecting seat and the second connecting seat can achieve a double sealing effect on the valve body.

[0007] As a further description of the above technical solution:

[0008] An inlet is provided on the left side of the valve body, and an outlet is provided on the right side of the valve body.

[0009] By adopting the above technical solution, gas or liquid enters from the inlet and exits from the outlet.

[0010] As a further description of the above technical solution:

[0011] The valve body is internally fixedly connected to a first protruding ring, which is located above the through hole. The lower surface of the first connecting seat is provided with a first slot, the position of which corresponds to the position of the first protruding ring.

[0012] By adopting the above technical solution, the upper part of the through hole can be better sealed through the cooperation of the first convex ring and the first slot.

[0013] As a further description of the above technical solution:

[0014] The valve body is internally fixedly connected to a second protruding ring, which is located below the through hole. The top of the second connecting seat is provided with a second slot, the position of which corresponds to the position of the second protruding ring.

[0015] By adopting the above technical solution, the lower part of the through hole can be better sealed through the cooperation of the second convex ring and the second slot.

[0016] As a further description of the above technical solution:

[0017] A rubber ring is fixedly connected inside the protective shell, and the first spring is positioned between the rubber ring and the piston.

[0018] By adopting the above technical solution, the sealing performance between the valve body and the protective shell can be increased through the rubber ring.

[0019] As a further description of the above technical solution:

[0020] The fixed column is equipped with a second spring inside, and the top of the second spring is fixedly connected to the bottom of the movable column.

[0021] By adopting the above technical solution, after the second spring closes above the through hole, the auxiliary moving column moves upward, allowing the iron sheet to be better attracted by the permanent magnet, thereby sealing the bottom of the through hole.

[0022] By employing the above technical solution, the dual-redundant sealing structure of the zero-leakage permanent magnet holding solenoid valve of this utility model has at least the following beneficial effects:

[0023] 1. Compared with existing technologies, the dual-redundant sealing structure of this zero-leakage permanent magnet holding solenoid valve achieves dual sealing protection for the valve body through hole through the synergistic action of the electromagnetic sealing mechanism and the auxiliary sealing mechanism. When the valve body is closed, the first connecting seat of the electromagnetic sealing mechanism is tightly fitted against the top of the through hole, while the continuous magnetic force generated by the permanent magnet attracts the second connecting seat of the auxiliary sealing mechanism to move upward, causing the second slot to form a mechanical seal with the second convex ring. This dual-redundant design ensures that even if one seal fails, the other sealing system can still maintain a zero-leakage state.

[0024] 2. Compared with the existing technology, the dual redundant sealing structure of this zero-leakage permanent magnet holding solenoid valve allows the iron core to drive the piston to move upward and open the through hole when the electromagnetic coil is energized. At this time, the second connecting seat automatically moves downward under the action of fluid pressure, completely eliminating the obstruction to the fluid passage. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure from a first-view perspective of the present invention.

[0026] Figure 2 This is a schematic diagram of the overall structure from a second perspective proposed in this utility model;

[0027] Figure 3 This is a cross-sectional view of the internal structure proposed in this utility model;

[0028] Figure 4 The present utility model proposes Figure 3 Enlarged view of the structure at point A in the middle.

[0029] Legend:

[0030] 1. Main body; 101. Valve body; 102. Inlet; 103. Outlet; 104. Through hole; 105. First convex ring; 106. Second convex ring; 2. Electromagnetic sealing mechanism; 201. Protective shell; 202. Electromagnetic coil; 203. Iron core; 204. Piston; 205. First connecting seat; 206. First slot; 207. Rubber ring; 208. First spring; 209. Permanent magnet; 3. Auxiliary sealing mechanism; 301. Fixed column; 302. Second spring; 303. Moving column; 304. Second connecting seat; 305. Iron sheet; 306. Second slot. Detailed Implementation

[0031] Reference Figure 1-4The present invention provides a dual-redundant sealing structure for a zero-leakage permanent magnet holding solenoid valve: It includes a main body 1, an electromagnetic sealing mechanism 2 mounted on the top of the main body 1, and an auxiliary sealing mechanism 3 installed inside the main body 1. The main body 1 includes a valve body 101 with a through hole 104 in the middle. The electromagnetic sealing mechanism 2 includes a protective shell 201, which is fixedly mounted on the top of the valve body 101. An electromagnetic coil 202 is fixedly connected inside the protective shell 201, and an iron core 203 is disposed inside the protective shell 201. A junction box is also installed on the protective shell 201 to control the energization of the electromagnetic coil 202. The electromagnetic force generated by the energization of the electromagnetic coil 202 drives the internal iron core 203 to move up and down. The bottom of the iron core 203 is fixedly connected to... A piston 204 is connected to the valve body 101, which increases the sealing between the valve body 101 and the protective shell 201. The outer surface of the piston 204 is in contact with the inner wall of the protective shell 201. A first connecting seat 205 is fixedly connected to the bottom of the piston 204, and the first connecting seat 205 is located above the through hole 104. A first spring 208 is provided on the top of the piston 204. A permanent magnet 209 is fixedly connected to the bottom of the first connecting seat 205. The auxiliary sealing mechanism 3 includes a fixed column 301, which is fixedly installed on the inner wall of the valve body 101. A movable column 303 is movably connected inside the fixed column 301. The top of the movable column 303 extends above the fixed column 301. A second connecting seat 304 is fixedly connected to the top of the movable column 303. The connecting seat 304 is located below the through hole 104. A second spring 302 is installed inside the fixed column 301. The top of the second spring 302 is fixedly connected to the bottom of the moving column 303. The second spring 302 allows the moving column 303 to move upwards after the through hole 104 is closed, enabling the iron plate 305 to be better attracted by the permanent magnet 209, thus sealing the bottom of the through hole 104. An iron plate 305 is fixedly connected to the top of the second connecting seat 304, and the position of the iron plate 305 corresponds to the position of the permanent magnet 209. In use, the electromagnetic sealing mechanism 2 and the auxiliary sealing mechanism 3 work together to achieve a double sealing effect on the valve body 101. When the valve body 101 is opened, the electromagnetic coil 202 controls the iron core 20. 3. The piston 204 moves upward, opening the through hole 104. Gas or liquid can pass through the through hole 104 to reach the outlet 103 of the valve body 101. After passing through the through hole 104, the gas or liquid exerts downward pressure on the second connecting seat 304. The second connecting seat 304 does not obstruct the flow of gas or liquid. When the valve body 101 is closed, the electromagnetic coil 202 operates to control the iron core 203 to move downward. At this time, the piston 204 moves downward, and the first connecting seat 205 below the piston 204 seals the top of the through hole 104. Since the permanent magnet 209 also moves downward after the piston 204 moves downward, the iron plate 305 on the second connecting seat 304 below will be attracted, causing the second connecting seat 304 to move upward under the action of magnetic force.At this time, the second connecting seat 304 can seal the area below the through hole 104. Through the cooperation of the first connecting seat 205 and the second connecting seat 304, a double sealing effect can be achieved for the valve body 101.

[0032] The valve body 101 has an inlet 102 on the left side and an outlet 103 on the right side. Gas or liquid enters through the inlet 102 and exits through the outlet 103.

[0033] A first protruding ring 105 is fixedly connected inside the valve body 101. The first protruding ring 105 is located above the through hole 104. A first slot 206 is provided on the lower surface of the first connecting seat 205. The position of the first slot 206 corresponds to the position of the first protruding ring 105. Through the cooperation of the first protruding ring 105 and the first slot 206, the upper part of the through hole 104 can be better sealed. A second protruding ring 106 is fixedly connected inside the valve body 101. The second protruding ring 106 is located below the through hole 104. A second slot 306 is provided on the top of the second connecting seat 304. The position of the second slot 306 corresponds to the position of the second protruding ring 106. Through the cooperation of the second protruding ring 106 and the second slot 306, the lower part of the through hole 104 can be better sealed.

[0034] A rubber ring 207 is fixedly connected inside the protective shell 201. The first spring 208 is located between the rubber ring 207 and the piston 204. The rubber ring 207 can increase the sealing between the valve body 101 and the protective shell 201.

[0035] Working Principle: When the electromagnetic coil is powered on, it generates electromagnetic force that attracts the iron core upwards. The iron core drives the piston upwards synchronously, compressing the first spring to store energy. During the piston's upward movement, the first connecting seat moves away from the area above the through hole, making the through hole open. Fluid can flow directly from the inlet to the outlet through the through hole. As the fluid passes through the through hole, the second connecting seat is subjected to downward pressure, pushing the moving column to compress the second spring downwards, ensuring that the second connecting seat does not obstruct the fluid passage. When the electromagnetic coil is de-energized, the electromagnetic force disappears, and the first spring releases its elastic potential energy, pushing the piston downwards. The first connecting seat then covers the area above the through hole again, forming a primary seal. Simultaneously, the permanent magnet at the bottom of the first connecting seat moves downwards to directly above the second connecting seat. Under the magnetic field of the permanent magnet, the iron plate drives the second connecting seat to move upwards in conjunction with the second spring, causing the second slot and the second convex ring to form a mechanical engagement seal. At this point, the primary seal of the first convex ring and the first slot, and the secondary seal of the second convex ring and the second slot together constitute a double-redundant sealing system.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-redundant sealing structure for a zero-leakage permanent magnet holding solenoid valve, comprising a main body (1), characterized in that: An electromagnetic sealing mechanism (2) is installed on the top of the main body (1), and an auxiliary sealing mechanism (3) is installed inside the main body (1). The main body (1) includes a valve body (101), and a through hole (104) is opened in the middle of the valve body (101). The electromagnetic sealing mechanism (2) includes a protective shell (201), which is fixedly installed on the top of the valve body (101). An electromagnetic coil (202) is fixedly connected inside the protective shell (201). An iron core (203) is provided inside the protective shell (201). A piston (204) is fixedly connected to the bottom of the iron core (203). The outer surface of the piston (204) is in contact with the inner wall of the protective shell (201). A first connecting seat (205) is fixedly connected to the bottom of the piston (204). Located above the through hole (104), the piston (204) is provided with a first spring (208) at its top, and a permanent magnet (209) is fixedly connected to the bottom of the first connecting seat (205). The auxiliary sealing mechanism (3) includes a fixed column (301), which is fixedly installed on the inner wall of the valve body (101). A movable column (303) is movably connected inside the fixed column (301). The top of the movable column (303) extends above the fixed column (301). A second connecting seat (304) is fixedly connected to the top of the movable column (303). The second connecting seat (304) is located below the through hole (104). An iron plate (305) is fixedly connected to the top of the second connecting seat (304). The position of the iron plate (305) corresponds to the position of the permanent magnet (209).

2. The dual-redundant sealing structure of the zero-leakage permanent magnet holding solenoid valve according to claim 1, characterized in that: An inlet (102) is provided on the left side of the valve body (101), and an outlet (103) is provided on the right side of the valve body (101).

3. The dual-redundant sealing structure of the zero-leakage permanent magnet holding solenoid valve according to claim 1, characterized in that: The valve body (101) is internally fixedly connected to a first protruding ring (105), which is located above the through hole (104). The lower surface of the first connecting seat (205) is provided with a first slot (206), which corresponds to the position of the first protruding ring (105).

4. The dual-redundant sealing structure of the zero-leakage permanent magnet holding solenoid valve according to claim 1, characterized in that: The valve body (101) is internally fixedly connected to a second protruding ring (106), which is located below the through hole (104). The top of the second connecting seat (304) is provided with a second slot (306), and the position of the second slot (306) corresponds to the position of the second protruding ring (106).

5. The dual-redundant sealing structure of the zero-leakage permanent magnet holding solenoid valve according to claim 1, characterized in that: A rubber ring (207) is fixedly connected inside the protective shell (201), and the first spring (208) is positioned between the rubber ring (207) and the piston (204).

6. The dual-redundant sealing structure of the zero-leakage permanent magnet holding solenoid valve according to claim 1, characterized in that: The fixed column (301) is provided with a second spring (302) inside, and the top of the second spring (302) is fixedly connected to the bottom of the movable column (303).

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