Electromagnetic type gas emergency cut-off valve

Abstract

The utility model belongs to the technical field of emergency cut-off valves, and particularly relates to an electromagnetic type gas emergency cut-off valve which is characterized in that a valve seat is arranged at the top of a valve body, a valve cover is arranged at the top of the valve seat, a movable iron core is arranged in the valve cover, one end of the movable iron core is a plane, the other end of the movable iron core is a ball head, the ball head end is connected with a gas stop plate, and the gas stop plate and the movable iron core are in compression joint. A coil support is further arranged in the valve cover and fixedly arranged on the outer side of the movable iron core in a sleeving mode, an electromagnetic coil is arranged on the coil support, a cable communicated with the electromagnetic coil is arranged on the side wall of the valve shell, and a reset pull rod is connected to the upper end of the movable iron core, so that manual reset is facilitated; and meanwhile, disassembly is easy and convenient, later maintenance is facilitated, the valve seat can be installed after the valve deck is disassembled at the position where the installation space is limited, and the valve can adapt to different environments.

Description

Technical Field

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

[0002] As a safety device in the gas transmission and distribution system, the electromagnetic gas emergency shut-off valve can improve the safety control capabilities of gas-using sites and ensure the safety of gas transmission, distribution, and use in the area. The electromagnetic gas emergency shut-off valve is usually composed of a solenoid valve body, a spring, an electromagnetic coil, a reset rod, a valve opening handle, a dust cap, and other parts. In the ventilation state, the coil is in a de-energized state and the reset rod is in a high position. When a pulse current passes through the coil, an electromagnetic field is generated, and the reset rod moves downward under the action of the electromagnetic force, closing the valve. When the internal components of the existing electromagnetic gas emergency shut-off valve are damaged and need to be repaired or replaced, the connection between the valve cover and the valve seat is relatively complex, making disassembly more inconvenient. Utility Model Content

[0003] The purpose of this utility model is to provide an electromagnetic gas emergency shut-off valve to solve the problems raised in the above-mentioned background technology.

[0004] In view of this, the utility model provides an electromagnetic gas emergency shut-off valve, wherein a valve seat is provided on the top of the valve body, a valve cover is provided on the top of the valve seat, a moving iron core is provided in the valve cover, one end of the moving iron core is flat, and the other end is a ball head, the ball head end of the moving iron core is connected to a gas stop plate, a coil bracket is provided in the valve cover, and the coil bracket is fixedly sleeved on the outside of the moving iron core, an electromagnetic coil is provided on the coil bracket, and the upper end of the moving iron core is connected to a reset rod;

[0005] A buckle groove is provided on the upper surface of the valve seat, a fixing block is fixedly provided on the bottom of the valve cover, a fixing ring is fixedly connected to the side wall of the buckle groove, a first opening groove and a second opening groove are provided on the fixing ring, and a first connecting block adapted to the first opening groove and a second connecting block adapted to the second opening groove are fixedly provided on the side wall of the fixing block.

[0006] In the above technical solution, further, the ball head end of the moving iron core is connected to a limit plate, the limit plate is arranged at the bottom of the air stop plate, and a baffle is arranged above the air stop plate.

[0007] In the above technical solution, further, a static magnetic block is fixedly provided on the inner top wall of the coil bracket, and a moving magnetic block is fixedly connected to the top of the moving iron core.

[0008] In the above technical solution, further, a first sealing ring is provided between the valve cover and the valve seat, and the first sealing ring is provided on the top of the fixing ring.

[0009] In the above technical solution, further, two second sealing rings are provided between the valve seat and the moving iron core.

[0010] In the above technical solution, further, a dust cap is provided on the top of the valve cover, and the reset rod extends into the dust cap.

[0011] In the above technical solution, further, the dust cap and the valve cover, as well as the valve body and the valve seat are detachably connected via threads.

[0012] In the above technical solution, further, a fixing rod and a buffer ring are provided at the air inlet end of the valve body. The buffer ring is a truncated cone structure. Several fixing rods are provided and one side of each fixing rod is fixedly connected to the side wall of the buffer ring and the other side is fixedly connected to the inner side wall of the air inlet of the valve body. Several first drainage holes are provided on the buffer ring near the large end opening, and several second drainage holes are provided on the buffer ring near the small end opening.

[0013] The beneficial effects of the utility model are:

[0014] 1. The side wall of the fixed block is fixedly provided with a first connecting block adapted to the first opening groove and a second connecting block adapted to the second opening groove. By setting the first opening groove and the second opening groove of different sizes, it can be limited. At the same time, it is easy to disassemble and convenient for later maintenance. In places where the installation space is limited, the valve cover can be removed and then the valve seat can be installed, which can adapt to different environments.

[0015] 2. The ball head end of the moving iron core is connected to a limit plate, which is set at the bottom of the air stop plate. The limit plate is crimped onto the air stop plate to limit the air stop plate. A baffle is set above the air stop plate. The air stop plate can be quickly assembled and disassembled for easy maintenance or replacement.

[0016] 3. The dust cap and valve cover, as well as the valve body and valve seat are detachably connected by threads, making installation and disassembly easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is the main view of the utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the valve seat structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the valve cover structure of the utility model;

[0022] Figure 6 This is a schematic diagram of the buffer ring structure of the utility model;

[0023] The marks in the figure are: 1-valve body, 2-valve seat, 3-valve cover, 4-dust cap, 5-moving iron core, 6-air stop plate, 7-coil bracket, 8-electromagnetic coil, 9-reset rod, 10-fixing ring, 11-buckle groove, 12-fixed block, 13-first connecting block, 14-second connecting block, 15-limiting plate, 16-blocking piece, 17-static magnetic block, 18-moving magnetic block, 19-first sealing ring, 20-second sealing ring, 23-first opening groove, 24-second opening groove, 25-fixing rod, 26-buffer ring, 27-first drainage hole, 28-second drainage hole. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0025] Example 1:

[0026] This embodiment provides an electromagnetic gas emergency shut-off valve, comprising:

[0027] Valve body 1, a valve seat 2 is provided on the top of the valve body 1, a valve cover 3 is provided on the top of the valve seat 2, a moving iron core 5 is provided in the valve cover 3, one end of the moving iron core 5 is flat, and the other end is a ball head, the ball head end of the moving iron core 5 is connected to the air stop plate 6, a coil bracket 7 is provided in the valve cover 3, and the coil bracket 7 is fixedly sleeved on the outside of the moving iron core 5, an electromagnetic coil 8 is provided on the coil bracket 7, and the upper end of the moving iron core 5 is connected to a reset rod 9;

[0028] A buckle groove 11 is provided on the upper surface of the valve seat 2, a fixing block 12 is fixedly provided on the bottom of the valve cover 3, a fixing ring 10 is fixedly connected to the side wall of the buckle groove 11, a first opening groove 23 and a second opening groove 24 are provided on the fixing ring 10, and a first connecting block 13 adapted to the first opening groove 23 and a second connecting block 14 adapted to the second opening groove 24 are fixedly provided on the side wall of the fixing block 12.

[0029] When the valve body 1 is opened, the valve cap 3 is provided with a movable iron core 5, and a movable iron core 5 is provided in the valve cap 3. The movable iron core 5 has a flat surface and a ball head at the other end. The ball head end is connected with an air stop plate 6, and the air stop plate 6 and the movable iron core 5 are press-fitted. The air stop plate 6 is made of metal or plastic. The metal air stop plate 6 improves its service life. The plastic air stop plate 6 can reduce the manufacturing cost. The corresponding air stop plate 6 can be selected according to actual needs. A coil bracket 7 is also provided in the valve cap 3. The coil bracket 7 is fixedly sleeved on the outside of the movable iron core 5. An electromagnetic coil 8 is provided on the coil bracket 7. A cable communicating with the electromagnetic coil 8 is provided on the side wall of the valve housing 3. The upper end of the movable iron core 5 is connected with a reset rod 9 for easy manual reset.

[0030] The upper surface of the valve seat 2 is provided with a buckle groove 11, and the bottom of the valve cover 3 is fixedly provided with a fixing block 12, which is arranged on the buckle groove 11, and the side wall of the buckle groove 11 is fixedly connected to the fixing ring 10, and a first opening groove 23 and a second opening groove 24 are provided on the fixing ring 10. The side wall of the fixing block 12 is fixedly provided with a first connecting block 13 adapted to the first opening groove 23 and a second connecting block 14 adapted to the second opening groove 24. By setting first opening grooves 23 and second opening grooves 24 of different sizes, it is possible to limit the position, and at the same time, it is easy to disassemble and convenient for later maintenance. The valve cover 3 can be removed and then the valve seat 2 can be installed in a place where the installation space is limited. It can adapt to different environments. When disassembling, the valve cover 3 needs to be rotated to a certain position. Disassembly can be performed when the first opening groove 23 is opposite to the first connecting block 13 and the second opening groove 24 is opposite to the second connecting block 14, which can prevent accidental disassembly and can realize that the valve cover 3 can rotate 360 ​​degrees on the valve seat 2.

[0031] Example 2:

[0032] This embodiment provides an electromagnetic gas emergency shut-off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0033] The ball head end of the moving iron core 5 is connected to a limit plate 15 . The limit plate 15 is arranged at the bottom of the air stop plate 6 . A baffle 16 is arranged above the air stop plate 6 .

[0034] It can be seen from this embodiment that the ball head end of the moving iron core 5 is connected to the limiting plate 15, and the limiting plate 15 is arranged at the bottom of the air stop plate 6. The limiting plate 15 is crimped with the air stop plate 6 to limit the air stop plate 6. A baffle 16 is arranged above the air stop plate 6. The air stop plate 6 can be quickly assembled and disassembled, which is convenient for maintenance or replacement.

[0035] Example 3:

[0036] This embodiment provides an electromagnetic gas emergency shut-off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0037] A static magnetic block 17 is fixedly provided on the inner top wall of the coil bracket 7 , and a moving magnetic block 18 is fixedly connected to the top of the moving iron core 5 .

[0038] As can be seen from this embodiment, when the solenoid valve is in the open state, the reset rod 9 is pulled upward, and the moving magnetic block 18 is attracted by the suction force of the static magnetic block 17 and fixed in this position. When the moving magnetic block 18 moves upward, it drives the moving iron core 5 and the air stop plate 6 to move upward, so that the air stop plate 6 is separated from the stop port in the valve body 1, and the gas emergency shut-off valve is opened;

[0039] When encountering an emergency, after the electromagnetic coil 8 is energized, it will generate a downward electromagnetic force on the moving magnetic block 18. The electromagnetic force will be greater than the attraction of the static magnetic block 17 to the moving magnetic block 18, so that the moving magnetic block 18 is disengaged from the static magnetic block 17 under the action of the electromagnetic force. Then, under the combined action of the electromagnetic force and the restoring force of the spring 19, the moving magnetic block 18 moves downward rapidly, and drives the moving iron core 5 and the air stop plate 6 to move downward until the air stop plate 6 abuts against the cut-off port inside the valve body 1, closing the gas emergency shut-off valve.

[0040] Example 4:

[0041] This embodiment provides an electromagnetic gas emergency shut-off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0042] A first sealing ring 19 is provided between the valve cover 3 and the valve seat 2 , and the first sealing ring 19 is provided on the top of the fixing ring 10 .

[0043] It can be seen from this embodiment that a first sealing ring 19 is provided between the valve cover 3 and the valve seat 2 , and the first sealing ring 19 is provided on the top of the fixing ring 10 . The provision of the first sealing ring 19 can prevent dust from entering the valve seat 2 .

[0044] Example 5:

[0045] This embodiment provides an electromagnetic gas emergency shut-off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0046] Two second sealing rings 20 are provided between the valve seat 2 and the moving iron core 5 .

[0047] It can be seen from this embodiment that two second sealing rings 20 are provided between the valve seat 2 and the moving iron core 5 to improve the sealing performance and prevent gas leakage.

[0048] Example 6:

[0049] This embodiment provides an electromagnetic gas emergency shut-off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0050] A dust cap 4 is provided on the top of the valve cover 3 , and a reset pull rod 9 extends into the dust cap 4 .

[0051] As can be seen from this embodiment, a dust cap 4 is provided on the top of the valve cover 3, and a reset rod 9 extends into the dust cap 4 to facilitate manual reset.

[0052] Example 7:

[0053] This embodiment provides an electromagnetic gas emergency shut-off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0054] The dust cap 4 and the valve cover 3 as well as the valve body 1 and the valve seat 2 are detachably connected via threads.

[0055] It can be seen from this embodiment that the dust cap 4 and the valve cover 3 as well as the valve body 1 and the valve seat 2 are detachably connected via threads, and installation and disassembly are simple and convenient.

[0056] Example 8:

[0057] This embodiment provides an electromagnetic gas emergency shut-off valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0058] The air inlet end of the valve body 1 is provided with a fixing rod 25 and a buffer ring 26. The buffer ring 26 is a truncated cone structure. There are several fixing rods 25, and one side of each fixing rod is fixedly connected to the side wall of the buffer ring 26, and the other side is fixedly connected to the inner side wall of the air inlet of the valve body 1. Several first drainage holes 27 are opened on the buffer ring 26 near the large end opening, and several second drainage holes 28 are opened on the buffer ring 26 near the small end opening.

[0059] It can be seen from this embodiment that a fixing rod 25 and a buffer ring 26 are provided at the air inlet end of the valve body 1. The buffer ring 26 is a truncated cone structure. The buffer ring 26 is fixedly connected to the inner wall of the air inlet of the valve body 1 through the fixing rod 25. The first drainage hole 27 is located near the large end opening of the buffer ring 26, and the second drainage hole 28 is located near the small end opening of the buffer ring 26. The first drainage hole 27 and the second drainage hole 28 are staggered with each other. Two drainage holes of different sizes are provided to disturb the gas flow, which can reduce the flow rate of the gas, prevent the gas flow rate from being too fast and impacting the valve body 1 tube wall, causing the gas temperature to rise rapidly, and reduce safety hazards.

[0060] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An electromagnetic gas emergency shut-off valve, characterized in that: include: A valve body (1), wherein a valve seat (2) is provided on the top of the valve body (1), a valve cover (3) is provided on the top of the valve seat (2), a moving iron core (5) is provided in the valve cover (3), one end of the moving iron core (5) is a plane, and the other end is a ball head, the ball head end of the moving iron core (5) is connected to an air stop plate (6), a coil bracket (7) is provided in the valve cover (3), and the coil bracket (7) is fixedly sleeved on the outside of the moving iron core (5), an electromagnetic coil (8) is provided on the coil bracket (7), and the upper end of the moving iron core (5) is connected to a reset pull rod (9); A buckle groove (11) is provided on the upper surface of the valve seat (2), a fixing block (12) is fixedly provided on the bottom of the valve cover (3), a fixing ring (10) is fixedly connected to the side wall of the buckle groove (11), a first opening groove (23) and a second opening groove (24) are provided on the fixing ring (10), and a first connecting block (13) adapted to the first opening groove (23) and a second connecting block (14) adapted to the second opening groove (24) are fixedly provided on the side wall of the fixing block (12).

2. The electromagnetic gas emergency shut-off valve according to claim 1, characterized in that: The ball head end of the moving iron core (5) is connected to a limit plate (15), the limit plate (15) is arranged at the bottom of the air stop plate (6), and a baffle (16) is arranged above the air stop plate (6).

3. The electromagnetic gas emergency shut-off valve according to claim 2, characterized in that: A static magnetic block (17) is fixedly provided on the inner top wall of the coil support (7), and a moving magnetic block (18) is fixedly connected to the top of the moving iron core (5).

4. The electromagnetic gas emergency shut-off valve according to claim 3, characterized in that: A first sealing ring (19) is provided between the valve cover (3) and the valve seat (2), and the first sealing ring (19) is provided on the top of the fixing ring (10).

5. The electromagnetic gas emergency shut-off valve according to claim 4, characterized in that: Two second sealing rings (20) are provided between the valve seat (2) and the moving iron core (5).

6. The electromagnetic gas emergency shut-off valve according to claim 5, characterized in that: A dust cap (4) is provided on the top of the valve cover (3), and a reset pull rod (9) extends into the dust cap (4).

7. The electromagnetic gas emergency shut-off valve according to claim 6, characterized in that: The dust cap (4) and the valve cover (3), as well as the valve body (1) and the valve seat (2), are all detachably connected via threads.

8. The electromagnetic gas emergency shut-off valve according to claim 7, characterized in that: The air inlet end of the valve body (1) is provided with a fixing rod (25) and a buffer ring (26), the buffer ring (26) is a truncated cone structure, a plurality of fixing rods (25) are provided, one side of each fixing rod is fixedly connected to the side wall of the buffer ring (26), and the other side is fixedly connected to the inner side wall of the air inlet of the valve body (1), a plurality of first drainage holes (27) are provided on the buffer ring (26) near the large end opening, and a plurality of second drainage holes (28) are provided on the buffer ring (26) near the small end opening.

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