Electric emergency cut-off valve

Abstract

The utility model discloses an electric emergency cut-off valve which comprises a valve body, a partition plate connected in the valve body, a flow channel hole formed in the partition plate, a connecting seat arranged on the valve body, a control seat arranged on the connecting seat, a piston installed on the control seat, a transmission shaft connected with the piston, a sealing plate connected with the transmission shaft, and an adjusting plate arranged in an inner cavity of the control seat. A spring is arranged between the adjusting plate and the piston, a cover plate is arranged above the control seat, the control seat is provided with an air inlet connector and an air outlet connector, the air inlet connector is connected with an air inlet pipe, an air inlet valve is arranged on an air inlet pipeline, the air outlet connector is connected with an air outlet pipe, and an electromagnetic valve is arranged on a pipeline of the air outlet pipe. A first mounting frame and a second mounting frame which are vertically arranged at an interval are arranged on the side wall of the control seat, a rotatable screw rod is arranged on the first mounting frame, a motor is arranged on the second mounting frame, the output end of the motor is connected with the lower end of the screw rod, a screw hole is formed in the cover plate, the cover plate is in threaded connection with the screw rod, and an adjusting device is arranged on the cover plate.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and particularly relates to an electric emergency cut-off valve. Background Art

[0002] The emergency cut-off valve, also called the safety cut-off valve, means that in case of an emergency, the valve will quickly close or open to avoid accidents. The emergency cut-off valve has excellent technical performance, low load loss and high reliability. It is applicable to combustible gases such as coal gas, natural gas and liquefied petroleum gas, and is widely used in safety facilities of gas supply pipeline systems, gas thermal energy plant workshops, gas boiler rooms and residential houses. The gas emergency cut-off valve is a normally open pulse-triggered solenoid valve with accident self-locking and manual reset functions.

[0003] As the prior art, Chinese Patent CN212690948U proposes an emergency cut-off valve that can replace the spring. However, in this technical solution, the cover plate is connected to the valve body by screws. When replacing the spring, the cover plate needs to be manually disassembled, and the operation is rather cumbersome and laborious. Moreover, if the spring is in a tensioned state, after the cover plate is opened, due to the thrust of the medium and its own restoring force, the spring will pop up upwards with a certain impact force, which may cause harm to the staff. In addition, adjusting the height of the adjusting plate by the screw rod is also a manual method and is also rather laborious, and there is still room for improvement. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an electric emergency cut-off valve to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the present utility model adopts the following technical solutions: An electric emergency cut-off valve includes a valve body. An inclined partition is connected between the upper and lower sides inside the valve body. A flow channel hole is provided in the middle of the partition. A connection seat is fixedly provided in the middle of the upper side of the valve body. A control seat is provided above the connection seat. A piston is installed on the upper side of the inner cavity of the control seat. A transmission shaft is connected to the lower side of the piston. The lower end of the transmission shaft penetrates through a fixing plate and then is connected to a sealing plate. The sealing plate can be in sealing cooperation with the flow channel hole. An adjusting plate is provided in the inner cavity of the control seat. A spring is provided between the adjusting plate and the piston. A cover plate for closing or opening the inner cavity thereof is provided above the control seat. An air inlet joint and an air outlet joint are respectively installed on both sides of the control seat. The air inlet joint is connected to an air inlet pipe. An air inlet valve is installed on the air inlet pipe. The air outlet joint is connected to an air outlet pipe. An electromagnetic valve is installed on the air outlet pipe. Both the air inlet joint and the air outlet joint are located above the fixing plate. First and second mounting brackets are provided on the side wall of the control seat at upper and lower intervals. A rotatable screw rod is provided on the first mounting bracket. A motor is provided on the second mounting bracket. The output end of the motor is connected to the lower end of the screw rod. The upper end of the screw rod extends upward. A threaded hole is provided on the cover plate. The cover plate is in threaded connection with the screw rod. An adjusting device for adjusting the height of the adjusting plate is provided on the cover plate.

[0006] With the above technical solutions, when the spring needs to be replaced, the motor is started. The motor drives the screw rod to rotate. The rotation of the screw rod drives the cover plate to move upward. After the cover plate moves upward, the inner cavity of the control seat is opened. At this time, the spring bounces upward under the thrust of the medium and its own restoring force, eliminating the need for manual opening of the cover plate. The staff can maintain a safe distance, thereby reducing the risk of the impact force when the spring bounces on the staff. Then, the original spring is taken out, and the new spring is placed into the inner cavity of the control seat. Finally, the cover plate is closed again. By adjusting the height of the adjusting plate through the adjusting device, the need for manual operation is also eliminated. The automated operation method saves time and effort, not only reducing the workload of the staff but also being more efficient.

[0007] As a further optimization of the present utility model, the adjusting device is an electric telescopic rod provided above the cover plate. A through hole is provided on the cover plate. The output end of the electric telescopic rod passes through the through hole and is connected to the adjusting plate.

[0008] As a further optimization of the present utility model, a fixing frame is further provided on the side wall of the control seat. A sliding rod is provided above the fixing frame. The upper end of the sliding rod extends upward. The cover plate is provided with a sliding hole and is slidably connected to the sliding rod.

[0009] With the above technical solutions, the sliding rod is provided to be slidably connected to the cover plate, and the sliding rod makes the cover plate move more stably up and down.

[0010] As a further optimization of the present utility model, a magnet is provided at the bottom of the adjusting plate, and the spring is made of a magnetic material and a magnetic block is fixed at the top.

[0011] With the above technical solution, when the cover plate moves upward, it drives the adjusting plate to move upward. After the adjusting plate moves upward, it pulls the spring upward by magnetism, making it more convenient to take out the spring.

[0012] As a further optimization of the present utility model, a sealing ring is provided at the top end of the control seat, and an annular groove is provided below the cover plate to cooperate with the sealing ring.

[0013] With the above technical solution, the setting of the sealing ring makes the cover plate fit tightly with the control seat, thus ensuring the sealing of the inner cavity of the control seat.

[0014] The beneficial effects of the present utility model are as follows: When the spring needs to be replaced, the motor is started. The motor drives the screw rod to rotate, and the rotation of the screw rod drives the cover plate to move upward. After the cover plate moves upward, the inner cavity of the control seat is opened. At this time, the spring bounces upward under the action of the thrust of the medium and its own restoring force, eliminating the need for manual opening of the cover plate. The staff can maintain a safe distance, thus reducing the risk of the impact force when the spring bounces up on the staff. Then, the original spring is taken out, and a new spring is placed into the inner cavity of the control seat. Finally, the cover plate is closed again, and the height of the adjusting plate is adjusted through the adjusting device, also eliminating the need for manual operation. The automated operation method saves time and effort, not only reducing the work burden of the staff but also being more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the present utility model.

[0016] The meanings of the reference numerals in the figure: 1. Valve body; 11. Partition plate; 111. Flow channel hole; 12. Control seat; 121. Fixed plate; 122. Piston; 123. Spring; 13. Transmission shaft; 14. Sealing plate; 15. Air inlet joint; 16. Air outlet joint; 17. Cover body; 171. Screw hole; 172. Slide hole; 21. First mounting bracket; 22. Second mounting bracket; 3. Motor; 4. Screw rod; 5. Adjusting device; 6. Fixed bracket; 7. Slide rod; 81. Magnet; 82. Magnetic block; 9. Sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

[0018] See the attached Figure 1, this embodiment disclosed by the utility model further provides: an electric emergency cut-off valve, which includes a valve body 1. A partition plate 11 is obliquely connected between the upper and lower sides inside the valve body 1. A flow channel hole 111 is opened in the middle of the partition plate 11. A connection seat is fixedly arranged in the middle of the upper side of the valve body 1. A control seat 12 is arranged above the connection seat. A piston 122 is installed on the upper side of the inner cavity of the control seat 12. A transmission shaft 13 is connected to the lower side of the piston 122. The lower end of the transmission shaft 13 penetrates through a fixing plate 121 and then is connected to a sealing plate 14. The sealing plate 14 can be in sealing cooperation with the flow channel hole 111. An adjusting plate is arranged in the inner cavity of the control seat 12. A spring 123 is arranged between the adjusting plate and the piston 122. A cover plate for closing or opening the inner cavity is arranged above the control seat 12. An air inlet joint 15 and an air outlet joint 16 are respectively installed on both sides of the control seat 12. The air inlet joint 15 is connected to an air inlet pipe, and an air inlet valve is installed on the air inlet pipe. The air outlet joint 16 is connected to an air outlet pipe, and an electromagnetic valve is installed on the air outlet pipe. Both the air inlet joint 15 and the air outlet joint 16 are located above the fixing plate 121. Further, a sealing ring 9 is arranged at the top of the control seat 12, and an annular groove matching with the sealing ring 9 is arranged below the cover plate;

[0019] The side wall of the control seat 12 is provided with a first mounting bracket 21 and a second mounting bracket 22 which are arranged at intervals up and down. A rotatable screw rod 4 is arranged on the first mounting bracket 21. A motor 3 is arranged on the second mounting bracket 22. The output end of the motor 3 is connected to the lower end of the screw rod 4. The upper end of the screw rod 4 extends upward. A fixing bracket 6 is also arranged on the side wall of the control seat 12. A sliding rod 7 is arranged above the fixing bracket 6. The upper end of the sliding rod 7 extends upward. The cover plate is provided with a sliding hole 172 and is slidably connected to the sliding rod 7;

[0020] A threaded hole 171 is opened on the cover plate. The cover plate is threadedly connected to the screw rod 4. An adjusting device 5 for adjusting the height of the adjusting plate is arranged on the cover plate. Specifically, the adjusting device 5 is an electric telescopic rod arranged above the cover plate. A through hole is arranged on the cover plate. The output end of the electric telescopic rod passes through the through hole and is connected to the adjusting plate;

[0021] Further, a magnet 81 is arranged at the bottom of the adjusting plate, and the spring 123 is made of a magnetic material and a magnetic block 82 is fixed at the top.

[0022] The principle of the present utility model is as follows: When the spring 123 needs to be replaced, the motor 3 is turned on. The motor 3 drives the screw rod 4 to rotate. The rotation of the screw rod 4 drives the cover plate to move upward. At the same time, the cover plate is slidably connected to the slide rod 7, and the slide rod 7 makes the cover plate move more stably up and down. After the cover plate moves upward, the inner cavity of the control seat 12 is opened. At this time, the spring 123 bounces upward under the thrust of the medium and its own restoring force, eliminating the need for manual opening of the cover plate. The staff can maintain a safe distance, thus reducing the risk of the impact force when the spring 123 bounces up on the staff. Then, the original spring 123 is taken out. When the cover plate moves upward, it drives the adjustment plate to move upward. After the adjustment plate moves upward, it pulls the spring 123 upward through magnetism, making it more convenient to take out the spring 123. Then, the new spring 123 is placed into the inner cavity of the control seat 12. Finally, the cover plate is closed again. The sealing ring 9 is provided to make the cover plate fit tightly with the control seat 12, thereby ensuring the sealing performance of the inner cavity of the control seat 12. By turning on the electric telescopic rod to adjust the height of the adjustment plate, the previous manual operation method is also eliminated. The automated operation method saves time and effort, not only reducing the workload of the staff but also being more efficient.

[0023] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present utility model, several improvements and modifications can be made. These improvements and modifications made under the above assumptions should also be regarded as the protection scope of the present utility model.

Claims

1. An electric emergency cut-off valve, comprising a valve body (1). There is an inclined partition (11) connected between the upper and lower sides inside the valve body (1). A flow channel hole (111) is formed in the middle of the partition (11). A connecting seat is fixedly provided in the middle of the upper side of the valve body (1). A control seat (12) is provided on the upper side of the connecting seat. A piston (122) is installed on the upper side of the inner cavity of the control seat (12). A transmission shaft (13) is connected to the lower side of the piston (122). The lower end of the transmission shaft (13) penetrates through a fixing plate (121) and then is connected to a sealing plate (14). The sealing plate (14) can be in sealing cooperation with the flow channel hole (111). An adjusting plate is provided in the inner cavity of the control seat (12). A spring (123) is provided between the adjusting plate and the piston (122). A cover plate for closing or opening its inner cavity is provided above the control seat (12). An air inlet joint (15) and an air outlet joint (16) are respectively installed on both sides of the control seat (12). The air inlet joint (15) is connected to an air inlet pipe, and an air inlet valve is installed on the air inlet pipe line. The air outlet joint (16) is connected with an air outlet pipe, and a solenoid valve is installed on the air outlet pipe path. Both the air inlet joint (15) and the air outlet joint (16) are located above the fixing plate (121). It is characterized in that, On the side wall of the control seat (12), a first mounting bracket (21) and a second mounting bracket (22) are arranged at intervals up and down. A rotatable screw rod (4) is provided on the first mounting bracket (21). A motor (3) is provided on the second mounting bracket (22). The output end of the motor (3) is connected to the lower end of the screw rod (4). The upper end of the screw rod (4) extends upward. A screw hole (171) is formed in the cover plate. The cover plate is threadedly connected to the screw rod (4). An adjusting device (5) for adjusting the height of the adjusting plate is provided on the cover plate.

2. The electric emergency cut-off valve according to claim 1, characterized in that, The adjusting device (5) is an electric telescopic rod provided above the cover plate. A through hole is provided on the cover plate. The output end of the electric telescopic rod passes through the through hole and is connected to the adjusting plate.

3. An electric emergency cut-off valve according to claim 1, characterized in that, A fixing bracket (6) is further provided on the side wall of the control seat (12). A sliding rod (7) is provided above the fixing bracket (6). The upper end of the sliding rod (7) extends upward. The cover plate is provided with a sliding hole (172) and is slidably connected to the sliding rod (7).

4. An electric emergency cut-off valve according to claim 1, characterized in that, A magnet (81) is provided at the bottom of the adjusting plate. The spring (123) is made of a magnetic material and a magnetic block (82) is fixed at the top.

5. An electric emergency cut-off valve according to claim 1, characterized in that, A sealing ring (9) is provided at the top end of the control seat (12). An annular groove for cooperating with the sealing ring (9) is provided below the cover plate.

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