Electromagnetic type gas emergency cut-off valve

Abstract

The utility model belongs to the technical field of gas valves, and discloses an electromagnetic type gas emergency cut-off valve which comprises a body, a cover plate is installed at the top end of the body through four screws, a shell is connected to the interior of the cover plate through threads, a coil is fixedly installed in the shell, and the coil is connected with an electromagnetic valve. A movable iron group is vertically and movably connected to the position, located in the center of the coil, in the shell, and a sleeve used for storing oil is fixedly installed in the body. According to the electromagnetic type gas emergency cut-off valve, the overall sealing performance of the electromagnetic type gas emergency cut-off valve can be improved, the gas leakage problem can be effectively prevented, the safety of a system is improved, gas leakage can be reduced, the environmental pollution risk is reduced, the ecological environment is protected, gas loss can be reduced, the energy utilization efficiency is improved, and the operation cost is reduced. And meanwhile, the possibility of occurrence of faults can be reduced, and the stability and the reliability of the equipment are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas valves, and in particular relates to an electromagnetic gas emergency cut-off valve. Background Art

[0002] In industry, commerce and households, gas is widely used as an important source of energy. However, there are certain safety hazards in the gas system, such as gas leakage, fire or explosion risks. In order to deal with these potential safety issues, electromagnetic gas emergency shut-off valves are designed and applied. Limitations of traditional shut-off methods: Traditional gas shut-off methods usually rely on manual valves or mechanical shut-off devices. These methods require human intervention and have slow response speeds. They cannot quickly cut off the gas supply in an emergency, increasing the risk of accidents. Advantages of solenoid valves: Electromagnetic gas emergency shut-off valves use electromagnetic principles to control the opening and closing of the valve through electrical signals. They have the advantages of fast response speed and high degree of automation. They can quickly and accurately cut off the gas supply in an emergency and effectively prevent accidents.

[0003] However, due to long-term use, the existing electromagnetic valves in the closed state cause the sealing gasket to wear, resulting in a slight air leakage problem, which in turn leads to leakage of the fluid medium, reduces the sealing performance of the system, and further causes the problem of low safety factor. Utility Model Content

[0004] The utility model aims at the problem that the sealing gasket of the electromagnetic valve in the prior art is worn due to long-term use when in the closed state, resulting in a slight leakage, which in turn leads to leakage of the fluid medium, reduces the sealing performance of the system, and further causes the problem of low safety factor. The following technical solutions are proposed:

[0005] An electromagnetic gas emergency shut-off valve comprises: a body, a cover plate is installed on the top of the body through four screws, a shell is connected to the cover plate through threads, a coil is fixedly installed inside the shell, and a movable iron group is movably connected up and down at the center of the coil inside the shell;

[0006] A sleeve for storing oil is fixedly installed inside the body, and metal tubes are embedded and installed in a circular array with a center point inside the sleeve. The metal tubes are used to move the oil, and a connecting sleeve is fixedly connected between the top ends of several of the metal tubes. A flexible rubber sheet is fixedly connected to the top end of the outer surface of the connecting sleeve. The flexible rubber sheet is used to block the oil and change the shape of the flexible rubber sheet. A piston is movably connected up and down inside the sleeve, and the outer side of the piston and the inner wall of the sleeve are in contact with each other.

[0007] Preferably, a positioning tube is snap-connected between the cover plate and the shell and the movable iron group is slidably connected inside the positioning tube. The top of the positioning tube is located at the top of the shell and is threadedly connected to a nut. One end of the shell is provided with a wire outlet seal.

[0008] Preferably, a rubber ring is clamped and connected in the middle of the outer surface of the piston, and an extrusion column is embedded and installed on the top of the piston, and the top of the extrusion column and the bottom of the movable iron group are in contact with each other.

[0009] Preferably, a return spring rod is equidistantly embedded in the top of the piston and the top of the return spring rod is embedded in the connecting sleeve. The return spring rod is composed of a positioning sleeve, a T-shaped column and a spring. The T-shaped column is slidably connected to the inside of the positioning sleeve and a spring is welded between the bottom end of the inner wall of the positioning sleeve and the bottom end of the T-shaped column.

[0010] Preferably, a diaphragm is snap-connected to the outer side of the movable iron group and the outer side of the diaphragm is snap-connected between the cover plate and the body, and the outer side of the diaphragm is fixed by being squeezed between the cover plate and the body.

[0011] Preferably, the bottom end of the metal tube and the inner wall of the sleeve are in contact with each other, and the top end of the metal tube and the bottom end of the inner wall of the connecting sleeve are in contact with each other.

[0012] The beneficial effects of the utility model are:

[0013] (1) It can improve the overall sealing performance of the electromagnetic gas emergency shut-off valve, effectively prevent the occurrence of gas leakage problems, improve the safety of the system, reduce gas leakage, reduce the risk of environmental pollution, protect the ecological environment, reduce gas losses, improve energy utilization efficiency, reduce operating costs, and maximize economic benefits. At the same time, it can reduce the possibility of failures and improve the stability and reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Shown is a schematic diagram of the structure of an electromagnetic gas emergency shut-off valve;

[0015] Figure 2 Shown is a front view of an electromagnetic gas emergency shut-off valve;

[0016] Figure 3 Shown is a schematic diagram of the installation structure of the sleeve;

[0017] Figure 4 Shown is a schematic diagram of the installation structure of the metal pipe;

[0018] Figure 5 Shown is a cross-sectional view of the sleeve.

[0019] In the figure: 1. body; 2. cover plate; 3. diaphragm; 4. housing; 5. coil; 6. positioning tube; 7. nut; 8. movable iron group; 9. outlet seal; 10. sleeve; 11. metal tube; 12. connecting sleeve; 13. flexible rubber sheet; 14. piston; 15. rubber ring; 16. extrusion column; 17. reset spring rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0021] Example 1

[0022] The utility model provides an electromagnetic gas emergency shut-off valve, such as Figure 1-5 As shown, an electromagnetic gas emergency shut-off valve comprises: a body 1, a cover plate 2 is mounted on the top of the body 1 by four screws, a shell 4 is connected to the cover plate 2 by threads, a coil 5 is fixedly mounted inside the shell 4, and a movable iron group 8 is movably connected up and down at the center of the coil 5 inside the shell 4;

[0023] A sleeve 10 for storing oil is fixedly installed inside the body 1. Metal tubes 11 are embedded and installed in a circular array with a center point inside the sleeve 10. The metal tubes 11 are used to move the oil. A connecting sleeve 12 is fixedly connected between the top ends of the metal tubes 11. A flexible rubber sheet 13 is fixedly connected to the top end of the outer surface of the connecting sleeve 12. The flexible rubber sheet 13 is used to block the oil and change the shape of the flexible rubber sheet 13. A piston 14 is movably connected to the inside of the sleeve 10, and the outer side of the piston 14 and the inner wall of the sleeve 10 fit each other.

[0024] As the piston 14 moves, it squeezes the oil inside the sleeve 10. At this time, the oil inside the sleeve 10 enters the connecting sleeve 12 along the metal tube 11, and the oil entering the connecting sleeve 12 squeezes the flexible rubber sheet 13, so that the flexible rubber sheet 13 is squeezed and deformed and fits with the connection between the bottom end of the movable iron group 8 and the main body 1, thereby achieving the purpose of secondary sealing of the connection between the bottom end of the movable iron group 8 and the main body 1.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, a positioning tube 6 is snap-connected between the cover plate 2 and the shell 4, and the movable iron group 8 is slidably connected to the inside of the positioning tube 6. The top of the positioning tube 6 is located at the top of the shell 4 and is connected to a nut 7 through a thread. The cooperation of the positioning tube 6 and the nut 7 is used for secondary fixation between the cover plate 2 and the shell 4, and can limit the movable iron group 8. An outlet seal 9 is provided at one end of the shell 4, and the outlet seal 9 is used to place the connecting line. A rubber ring 15 is snap-connected to the middle of the outer surface of the piston 14, and the rubber ring 15 increases the sealing between the piston 14 and the sleeve 10. An extrusion column 16 is embedded in the top of the piston 14, and the top of the extrusion column 16 and the bottom of the movable iron group 8 fit each other. The downward displacement of the movable iron group 8 can drive the piston 14 to move downward, thereby changing the difficulty of moving the piston 14 downward.

[0026] like Figure 3 , Figure 4 and Figure 5 As shown, a reset spring rod 17 is equidistantly embedded and installed at the top of the piston 14, and the top of the reset spring rod 17 is embedded and installed inside the connecting sleeve 12. The reset spring rod 17 is composed of a positioning sleeve, a T-shaped column and a spring. The T-shaped column is slidably connected to the inside of the positioning sleeve, and a spring is welded between the bottom end of the inner wall of the positioning sleeve and the bottom end of the T-shaped column. The positioning sleeve is driven to move under the action of the spring, and the positioning sleeve moves, which drives the piston 14 to move, thereby changing the difficulty of moving the piston 14.

[0027] like Figure 1 and Figure 2 As shown, the outer side of the movable iron group 8 is clamped with a diaphragm 3, and the outer side of the diaphragm 3 is clamped between the cover plate 2 and the body 1. The outer side of the diaphragm 3 is fixed by squeezing between the cover plate 2 and the body 1. The diaphragm 3 is used to increase the sealing between the cover plate 2 and the body 1 to prevent gas leakage.

[0028] like Figure 5 As shown, the bottom end of the metal tube 11 and the inner wall of the sleeve 10 fit together, and the top end of the metal tube 11 and the bottom end of the inner wall of the connecting sleeve 12 fit together, which facilitates the displacement of the piston 14 and changes the difficulty of displacement of the piston 14.

[0029] Working principle: In actual use, the device is energized by the coil 5, which causes the movable iron group 8 to move up and down. When the movable iron group 8 moves up, it drives the diaphragm 3 completely, so that the gas inside the body 1 enters along one end and enters the exhaust hole at the other end of the body 1 along the diaphragm 3 and the bottom of the movable iron group 8 to be discharged. At this time, the piston 14 is driven to move up under the action of the reset spring rod 17. During the upward movement of the piston 14, the rubber ring 15 is driven to move, and negative pressure is generated inside the sleeve 10. When negative pressure is generated inside the sleeve 10, the inside of the connecting sleeve 12 is sucked through the metal tube 11. At this time, the oil inside the connecting sleeve 12 enters the inside of the sleeve 10 along the metal tube 11, and the flexible rubber sheet 13 contracts.

[0030] When the coil 5 is powered off, the movable iron group 8 drives the diaphragm 3 to reset, and at the same time, the movable iron group 8 drives the piston 14 to move downward through the extrusion column 16. When the piston 14 moves downward, it drives the reset spring rod 17 to stretch, and at the same time squeezes the oil inside the sleeve 10, so that the oil enters the inside of the connecting sleeve 12 along the metal tube 11, and enters the inside of the flexible rubber sheet 13 along the connecting sleeve 12, so that the flexible rubber sheet 13 is deformed by the pressure of the oil, and the deformed flexible rubber sheet 13 enters the fitting connection between the movable iron group 8 and the main body 1, thereby achieving the purpose of secondary sealing between the main body 1 and the movable iron group 8. The problem of slight leakage of the electromagnetic gas emergency shut-off valve due to wear of the movable iron group 8 after long-term use is reduced, thereby increasing the sealing performance of the electromagnetic gas emergency shut-off valve, and further increasing the safety performance of the electromagnetic gas emergency shut-off valve.

[0031] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. An electromagnetic gas emergency shut-off valve, characterized in that: include: A body (1), a cover plate (2) is mounted on the top of the body (1) by means of four screws, a shell (4) is connected to the inside of the cover plate (2) by means of threads, a coil (5) is fixedly mounted inside the shell (4), and a movable iron group (8) is movably connected up and down at the center of the coil (5) inside the shell (4); A sleeve (10) for storing oil is fixedly installed inside the body (1), metal tubes (11) are embedded and installed in a circular array with a center point inside the sleeve (10), and the metal tubes (11) are used to move the oil. A connecting sleeve (12) is fixedly connected between the top ends of a plurality of the metal tubes (11), and a flexible rubber sheet (13) is fixedly connected to the top end of the outer surface of the connecting sleeve (12), and the flexible rubber sheet (13) is used to block the oil and change the shape of the flexible rubber sheet (13). A piston (14) is movably connected to the inside of the sleeve (10) up and down, and the outer side of the piston (14) and the inner wall of the sleeve (10) are in contact with each other.

2. The electromagnetic gas emergency shut-off valve according to claim 1, characterized in that: A positioning tube (6) is snap-connected between the cover plate (2) and the outer shell (4), and a movable iron group (8) is slidably connected inside the positioning tube (6). The top end of the positioning tube (6) is located at the top end of the outer shell (4) and is connected to a nut (7) through a thread. One end of the outer shell (4) is provided with a wire outlet seal (9).

3. The electromagnetic gas emergency shut-off valve according to claim 1, characterized in that: A rubber ring (15) is clamped and connected in the middle of the outer surface of the piston (14), and an extrusion column (16) is embedded and installed at the top end of the piston (14), and the top end of the extrusion column (16) and the bottom end of the movable iron group (8) are in contact with each other.

4. The electromagnetic gas emergency shut-off valve according to claim 3, characterized in that: A return spring rod (17) is equidistantly embedded in the top of the piston (14), and the top of the return spring rod (17) is embedded in the interior of the connecting sleeve (12). The return spring rod (17) is composed of a positioning sleeve, a T-shaped column and a spring. The T-shaped column is slidably connected to the interior of the positioning sleeve, and a spring is welded between the bottom end of the inner wall of the positioning sleeve and the bottom end of the T-shaped column.

5. The electromagnetic gas emergency shut-off valve according to claim 2, characterized in that: The outer side of the movable iron group (8) is snap-connected with a diaphragm (3), and the outer side of the diaphragm (3) is snap-connected between the cover plate (2) and the body (1), and the outer side of the diaphragm (3) is fixed by squeezing between the cover plate (2) and the body (1).

6. The electromagnetic gas emergency shut-off valve according to claim 1, characterized in that: The bottom end of the metal tube (11) and the inner wall of the sleeve (10) are in contact with each other, and the top end of the metal tube (11) and the bottom end of the inner wall of the connecting sleeve (12) are in contact with each other.

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