Electromagnetic valve

Abstract

The utility model relates to the technical field of fluid control, and provides an electromagnetic valve which comprises a valve body, a fixing plate is fixedly embedded in the inner surface of the valve body, a shielding layer is fixedly embedded in the inner surface of the fixing plate, a coil is fixedly embedded in the inner surface of the shielding layer, a positioning rod is movably embedded in the inner surface of the coil, and the positioning rod is movably embedded in the inner surface of the valve body. The bottom of the positioning rod is fixedly connected with a baffle, the outer surface of the positioning rod is fixedly connected with an iron core, the side, close to the top, of the positioning rod is movably sleeved with a partition plate, the top of the positioning rod is fixedly connected with a plug, and the side, close to the plug, of the top of the valve body is fixedly connected with a compressed air pipeline. The outer surface, close to the top, of the valve body is fixedly connected with the two connecting pipes, the expansion gaskets conduct temporary expansion, gaps between flanges can be filled, precious time is won for stopping operation of a unit, accident enlargement is avoided, meanwhile, an access door is convenient to open, internal components are convenient to overhaul, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control, in particular to a solenoid valve. Background Art

[0002] Solenoid valves play a key role in modern industrial automation processes and equipment, and are an important part of automated control, safety, efficiency, and precision operation.

[0003] Although today's technology has many advantages, its disadvantage is that during long-term use, the gasket at the flange of the solenoid valve is prone to aging and damage, resulting in reduced sealing and failure to effectively block the working fluid, causing the working fluid to pollute the environment and even the risk of fire and explosion, endangering the health of personnel. At the same time, the coil and other components inside the solenoid valve are easily damaged, and during maintenance, too many bolts need to be removed, which reduces the work efficiency of the maintenance personnel and prolongs the failure time. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a solenoid valve to solve the problems raised in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a solenoid valve, comprising: a valve body, a fixing plate fixedly embedded in the inner surface of the valve body, a shielding layer fixedly embedded in the inner surface of the shielding layer, a coil fixedly embedded in the inner surface of the shielding layer, a positioning rod movably embedded in the inner surface of the coil, a baffle fixedly connected to the bottom of the positioning rod, an iron core fixedly connected to the outer surface of the positioning rod, a partition movably sleeved on one side of the positioning rod near the top, a plug fixedly connected to the top of the positioning rod, a compressed air pipeline fixedly connected to the side of the top of the valve body near the plug, two connecting pipes fixedly connected to the outer surface of the valve body near the top, two flanges fixedly connected to the outer surface of the two flanges, limiting rings fixedly connected to the inner surfaces of the two connecting pipes, expansion gaskets fixedly connected to the side away from the valve body, the zero-time expansion of the expansion gaskets fills the gap between the flanges, thereby buying precious time for stopping the operation of the unit and avoiding the expansion of accidents.

[0008] As a preferred embodiment, an inspection door is provided on the outer surface of the valve body, a slide groove is provided on the outer surface of the inspection door, two slide rods are movably embedded in the inner surface of the slide groove, the outer surfaces of the two slide rods are fixedly connected with tooth plates, the outer surfaces of the tooth plates are meshingly connected with gears, a rotating shaft is fixedly installed on the inner surface of the gear, a crank is fixedly installed on the side of the rotating shaft away from the gear, a limiting groove is provided on the side of the valve body close to the tooth plate, the inspection door of the valve body can be opened to inspect the internal components, and the structure is simple and easy to operate.

[0009] As a preferred embodiment, the partition is fixedly connected to the inner wall of the valve body, and the sides of the two connecting pipes away from the valve body are fixedly connected to the inner surfaces of the two flanges and the limiting ring. The partition can divide an air cavity in the valve body.

[0010] As a preferred implementation, the two expansion gaskets are arranged on the inner surfaces of the two limiting rings, and the limiting rings can prevent the expansion gaskets from expanding toward the outer diameter of the pipeline.

[0011] As a preferred embodiment, the rotating shaft is movably embedded in the outer surface of the inspection door, and the tooth plate is movably embedded in the inner surface of the limiting groove, and the rotating shaft can transmit the power of the crank to the gear.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. The utility model can reduce the opening of the solenoid valve to allow compressed air to enter the expansion gasket from the connecting pipe, so that the expansion gasket expands. The temporary expansion of the expansion gasket can fill the gap between the flanges, thereby buying precious time for stopping the operation of the unit and avoiding the expansion of the accident.

[0014] 2. The utility model can rotate the crank handle to make the gear drive the tooth plate to leave the limit groove, thereby opening the inspection door of the valve body and inspecting the internal components. The utility model has a simple structure and convenient operation, which is convenient for inspection and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the main structure of a solenoid valve provided by the utility model;

[0016] Figure 2 A schematic diagram of the position structure of an expansion gasket of a solenoid valve provided by the utility model;

[0017] Figure 3 A schematic diagram of the baffle position structure of a solenoid valve provided by the utility model;

[0018] Figure 4 A schematic diagram of the shielding layer position structure of a solenoid valve provided by the utility model;

[0019] Figure 5 A schematic diagram of the position structure of a connecting pipe of a solenoid valve provided by the utility model;

[0020] Figure 6 A schematic diagram of the flange position structure of a solenoid valve provided by the utility model;

[0021] Figure 7 A solenoid valve provided by the utility model Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 8 A solenoid valve provided by the utility model Figure 6 Schematic diagram of the enlarged structure at point B in the middle.

[0023] Legend:

[0024] 1. Valve body; 2. Fixed plate; 3. Shielding layer; 4. Coil; 5. Positioning rod; 6. Iron core; 7. Baffle; 8. Partition; 9. Plug; 10. Compressed air pipeline; 11. Connecting pipe; 12. Flange; 13. Limiting ring; 14. Expansion gasket; 15. Inspection door; 16. Slide groove; 17. Slide rod; 18. Tooth plate; 19. Gear; 20. Rotating shaft; 21. Crank; 22. Limiting groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-8The utility model provides a technical solution: a solenoid valve, comprising: a valve body 1, a fixed plate 2 is fixedly embedded on the inner surface of the valve body 1, a shielding layer 3 is fixedly embedded on the inner surface of the fixed plate 2, a coil 4 is fixedly embedded on the inner surface of the shielding layer 3, a positioning rod 5 is movably embedded on the inner surface of the coil 4, a baffle 7 is fixedly connected to the bottom of the positioning rod 5, an iron core 6 is fixedly connected to the outer surface of the positioning rod 5, a partition 8 is movably sleeved on one side of the positioning rod 5 near the top, a plug 9 is fixedly connected to the top of the positioning rod 5, a compressed air pipeline 10 is fixedly connected to one side of the top of the valve body 1 near the plug 9, two connecting pipes 11 are fixedly connected to the outer surface of the valve body 1 near the top, two flanges 12 are fixedly connected to the outer surface of the valve body 1, and limiting rings 13 are fixedly connected to the inner surfaces of the two flanges 12, and expansion gaskets 14 are fixedly connected to the two connecting pipes 11 away from the valve body 1 on one side, so that the expansion gasket 14 expands, and the zero-time expansion of the expansion gasket 14 fills the gap between the flanges 12, thereby gaining precious time for stopping the operation of the unit and avoiding the expansion of the accident.

[0027] like Figure 1-8 As shown, an inspection door 15 is provided on the outer surface of the valve body 1, and a slide groove 16 is provided on the outer surface of the inspection door 15. Two slide rods 17 are movably embedded in the inner surface of the slide groove 16. The outer surfaces of the two slide rods 17 are fixedly connected with a tooth plate 18. The outer surface of the tooth plate 18 is meshingly connected with a gear 19. A rotating shaft 20 is fixedly installed on the inner surface of the gear 19. A crank handle 21 is fixedly installed on the side of the rotating shaft 20 away from the gear 19. A limiting groove 22 is provided on the side of the valve body 1 close to the tooth plate 18, so that the inspection door 15 of the valve body 1 can be opened to inspect the internal components. The structure is simple and the operation is convenient, which is convenient for maintenance.

[0028] like Figure 1-8 As shown, the partition 8 is fixedly connected to the inner wall of the valve body 1, and the two connecting pipes 11 are fixedly connected to the inner surfaces of the two flanges 12 and the limit ring 13 on the side away from the valve body 1. The partition 8 can divide an air cavity inside the valve body 1 to stabilize the pressure of the compressed air.

[0029] like Figure 1-8 As shown, two expansion gaskets 14 are arranged on the inner surfaces of two limiting rings 13 , and the limiting rings 13 can prevent the expansion gaskets 14 from expanding toward the outer diameter of the pipeline, resulting in a decrease in the effect of tightly filling the gap between the flanges 12 .

[0030] like Figure 1-8 As shown, the rotating shaft 20 is movably embedded in the outer surface of the inspection door 15, and the tooth plate 18 is movably embedded in the inner surface of the limiting groove 22. The rotating shaft 20 can transmit the power of the crank 21 to the gear 19 to rotate the gear 19.

[0031] Working principle: This device is a solenoid valve. Under normal circumstances, the solenoid valve is in a normally open state, and the plug 9 is plugged on the compressed air pipeline 10. When there is water leakage at the flange 12 of the solenoid valve, the compressed air pipeline 10 is connected to make the pressure inside the compressed air pipeline 10 greater than the pressure inside the solenoid valve pipeline, and then the opening of the solenoid valve is set to about 50%. At this time, the magnetic force released by the coil 4 will weaken. The magnetic force of the coil 4 weakens, causing the iron core 6 to move downward. The iron core 6 drives the baffle 7 to move downward through the positioning rod 5, reducing the working medium flow rate of the solenoid valve pipeline, and when the positioning rod 5 moves downward, it will drive the plug 9 to move downward, so that the compressed air in the compressed air pipeline 10 first enters the cavity formed by the upper part of the partition 8 and the valve body 1, and then enters the expansion gasket 14 through the two connecting pipes 11, so that the expansion The gasket 14 expands and fills the gap between the flanges 12 at zero time. The limit ring 13 can prevent the expansion gasket 14 from expanding toward the outer diameter of the pipe. The shielding layer 3 on the fixed plate 2 can shield the interference of the outside world to the coil 4. The expansion gasket 14 can expand at zero time at the connection of the solenoid valve flange 12 to fill the gap between the flanges 12, thereby buying precious time for stopping the operation of the unit and avoiding the expansion of the accident. When inspecting the coil 4 and other components inside the solenoid valve, the crank 21 is rotated to drive the gear 19 to rotate through the rotating shaft 20. The gear 19 makes the tooth plate 18 leave the limit groove 22, and the two slide rods 17 can move on the inner surface of the slide groove 16, so that the inspection door 15 of the valve body 1 can be opened to inspect the internal components. The structure is simple and the operation is convenient, which is convenient for maintenance.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A solenoid valve, characterized in that: include: A valve body (1), wherein a fixing plate (2) is fixedly embedded in the inner surface of the valve body (1), a shielding layer (3) is fixedly embedded in the inner surface of the fixing plate (2), a coil (4) is fixedly embedded in the inner surface of the shielding layer (3), a positioning rod (5) is movably embedded in the inner surface of the coil (4), a baffle (7) is fixedly connected to the bottom of the positioning rod (5), an iron core (6) is fixedly connected to the outer surface of the positioning rod (5), a partition (8) is movably sleeved on one side of the positioning rod (5) close to the top, and the positioning rod ( 5) is fixedly connected to the top of the valve body (1), a compressed air pipeline (10) is fixedly connected to the side of the top of the valve body (1) close to the plug (9), two connecting pipes (11) are fixedly connected to the outer surface of the valve body (1) close to the top, two flanges (12) are fixedly connected to the outer surface of the valve body (1), the inner surfaces of the two flanges (12) are fixedly connected to limit rings (13), and the two connecting pipes (11) are fixedly connected to the side away from the valve body (1) with expansion gaskets (14).

2. A solenoid valve according to claim 1, characterized in that: The outer surface of the valve body (1) is provided with an inspection door (15), the outer surface of the inspection door (15) is provided with a slide groove (16), the inner surface of the slide groove (16) is movably embedded with two slide rods (17), the outer surfaces of the two slide rods (17) are fixedly connected with a tooth plate (18), the outer surface of the tooth plate (18) is meshingly connected with a gear (19), the inner surface of the gear (19) is fixedly installed with a rotating shaft (20), the side of the rotating shaft (20) away from the gear (19) is fixedly installed with a crank (21), and the side of the valve body (1) close to the tooth plate (18) is provided with a limiting groove (22).

3. The solenoid valve according to claim 1, characterized in that: The partition plate (8) is fixedly connected to the inner wall of the valve body (1), and the two connecting pipes (11) are fixedly connected to the inner surfaces of the two flanges (12) and the limiting ring (13) on the sides away from the valve body (1).

4. The solenoid valve according to claim 1, characterized in that: The two expansion gaskets (14) are arranged on the inner surfaces of the two limiting rings (13).

5. The solenoid valve according to claim 2, characterized in that: The rotating shaft (20) is movably embedded in the outer surface of the inspection door (15), and the tooth plate (18) is movably embedded in the inner surface of the limiting groove (22).

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