An electromagnetic emergency shut-off valve that uses pneumatic mechanical shut-off for power failure

Abstract

The present invention relates to the field of valve technology, and discloses an electromagnetic emergency shut-off valve for mechanical shut-off with pneumatic power failure, comprising a valve body and an external shell, the external shell being plugged into the surface of the valve body, an electromagnet being fixedly connected inside the external shell, a tension spring being fixedly connected to the side of the external shell away from the electromagnet, a strong magnetic round valve core being fixedly connected to the end of the tension spring close to the electromagnet, the valve being cut off by driving the round connecting rod valve core to rotate by cooperating with a half gear, the round connecting rod valve core being able to quickly cut off the flow of fluid to ensure the safety of operators, and at the same time, because the round connecting rod valve core quickly cuts off the flow of fluid when the valve or pipeline leaks, the production interruption and equipment maintenance time caused by the leakage can be reduced, thereby improving the production efficiency, which is very important for industrial production requiring continuous production, and can avoid the production interruption and equipment maintenance time caused by leakage accidents, thereby improving the production efficiency and economic benefits.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to an electromagnetic emergency cut-off valve which is mechanically cut off by air pressure when power is cut off. Background Art

[0002] The electromagnetic emergency shut-off valve with pneumatic mechanical cut-off for power failure is an auxiliary safety maintenance type valve. It is usually installed in series with the stop valve on the medium outlet pipeline close to the container. Its function is to stop the leak urgently when the pipeline leaks. It usually also has the performance of over-current shut-off and over-temperature shut-off, and can be operated independently at short and long distances.

[0003] However, with the continuous development of science and technology, the existing electromagnetic emergency shut-off valves that use pneumatic mechanical cut-off for power outages have gradually exposed some problems. The existing power-off shut-off valve will only be closed when the power is disconnected. Therefore, under normal operating conditions, the valve is in an open state, and the power-off shut-off valve does not have a corresponding leakage detection structure, so it is impossible to detect leakage in the pipeline. If a leak occurs in the pipeline, the valve cannot respond in the first time. Even if the valve can be closed after the power is disconnected, the leakage has already occurred and the loss that has been caused cannot be recovered. This will increase the cost and risk of industrial production. Moreover, because the valve is not closed in time, the leaked medium will affect the products on the production line, resulting in a decline in product quality or production interruption, further reducing the production efficiency and economic benefits of the enterprise.

[0004] Analyzing the problems caused by the above problems, first of all, the existing cut-off valve adopts a spherical valve core, but during the cutting process, due to the limitation of its shape, the contact area between the valve core and the valve seat is small, resulting in poor sealing effect of the valve. Under high pressure or large flow conditions, the spherical valve core will have problems such as poor sealing and leakage, affecting the cutting effect of the valve, and the friction force that the spherical valve core needs to overcome during its movement is large, which will make the valve respond slowly. In the pneumatic system, the gas flow speed is very fast. If the valve responds slowly, it will affect the stability and accuracy of the entire system.

[0005] Secondly, the valve port of the existing cut-off valve is directly connected to the pipeline. Therefore, during the process of closing or opening the valve, due to the change in flow characteristics, the elasticity and rigidity of the pipeline have a direct impact on the flow control, and the deformation of the pipeline will have an irreversible effect on the flow. The control accuracy of the control system will be affected, resulting in the valve being unable to accurately control the flow, and the energy consumption of the control system will be affected, which will lead to an increase in energy consumption during the operation of the valve.

[0006] Finally, when the pneumatic shut-off valve needs to quickly cut off or open the flow of fluid, there is insufficient compressed air in its cylinder, which causes the valve to fail to respond in time, resulting in obstruction of the production process and reduced production efficiency. In addition, the failure of the valve to close in time will also cause fluid leakage, which will cause damage to the equipment.

[0007] For this reason, an electromagnetic emergency shut-off valve which is mechanically cut off by air pressure when power is cut off is proposed. Summary of the invention

[0008] The object of the present invention is to provide an electromagnetic emergency shut-off valve that mechanically shuts off the power by using pneumatic pressure to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electromagnetic emergency shut-off valve for mechanical shut-off with pneumatic pressure for power failure, comprising a valve body and an external shell, the external shell being plugged into the surface of the valve body, an electromagnet being fixedly connected inside the external shell, a tension spring being fixedly connected to the side of the external shell away from the electromagnet, a strong magnetic round valve core being fixedly connected to the end of the tension spring close to the electromagnet, an audible and visual alarm being arranged above the valve body, a corrugated compression hose being fixedly connected to the end of the valve body away from the external shell, a detection component for detecting leakage inside the valve being arranged inside the valve body, a rotating component for rotating the valve core and cutting off the passage being arranged above the valve body, and a speed-up component for accelerating the speed of the valve core cutting off the passage by increasing the pneumatic speed being arranged above the valve body;

[0010] The rotating assembly includes a rotating shell, the rotating shell is fixedly connected to the top of the valve body, the top of the rotating shell is fixedly connected to the bottom of the sound and light alarm, a circular connecting rod valve core is rotatably connected to the top of the rotating shell and penetrates the valve body, a matching half gear is fixedly connected to the top of the circular connecting rod valve core, a conflicting convex strip is fixedly connected to the top of the matching half gear, a driving half gear is rotatably connected to the bottom of the inner cavity of the rotating shell, the driving half gear and the matching half gear are meshed with each other, and a conflicting column is symmetrically fixedly connected to the top of the driving half gear;

[0011] The speed-up component includes a supporting shell, the supporting shell is fixedly connected to the top of the rotating shell, an air intake pipe is fixedly connected inside the supporting shell, and a compressed air bag is fixedly connected to the bottom of the air intake pipe.

[0012] Preferably, the detection component includes a positioning groove, which is opened on a side of the valve body away from the strong magnetic circular valve core, and a detection spring is fixedly connected to the inner wall of the positioning groove, and a resistance plate is fixedly connected to one end of the detection spring away from the strong magnetic circular valve core, and a strong magnetic block is fixedly connected to the surface of the resistance plate away from the detection spring, and an electromagnetic pressure sensor controller is fixedly connected to the inner wall of the positioning groove away from the detection spring.

[0013] Preferably, the rotating assembly also includes a spur gear, which is fixedly connected to the top of the driving half gear, a pneumatic housing is fixedly connected to the inside of the rotating shell, a piston connecting rod is slidably connected to the inside of the pneumatic shell, a limiting convex strip is fixedly connected to the surface of the pneumatic shell, one end of the limiting convex strip away from the pneumatic shell is fixedly connected to the inner wall of the rotating shell, a sliding rack is slidably connected to the surface of the limiting convex strip, the sliding rack and the spur gear are meshed with each other, and the sliding rack is fixedly connected to the piston connecting rod.

[0014] Preferably, the speed-up assembly also includes a fixed disc, which is fixedly connected to the top of the rotating shell, and a rotating disc is rotatably connected inside the fixed disc, and the surface of the rotating disc is provided with motion grooves arranged in a circular shape and at equal intervals, and the top of the fixed disc is provided with linear grooves arranged in a circular shape and at equal intervals, and the linear grooves and the motion grooves are both slidably connected with limiting columns, and the tops of the limiting columns are fixedly connected to the bottom of the compressed airbag, and the top of the rotating shell is rotatably connected with a main shaft, and the main shaft and the rotating disc are connected by a belt drive, and an exhaust pipe is fixedly connected to the top of the rotating shell and passes through the top of the pneumatic shell.

[0015] Preferably, the main shaft is drivenly installed on an external motor, so that the main shaft is driven to rotate by the rotation of the output shaft of the external motor.

[0016] Preferably, the electromagnetic pressure sensor controller electrically controls the start and stop of the external motor, the pneumatic housing and the sound and light alarm, thereby achieving the effect of stably electrically controlling the alarm through the electromagnetic pressure sensor.

[0017] Preferably, the materials of the strong magnetic round valve core and the strong magnetic block are both neodymium iron boron, so that the strong magnetic round valve core and the strong magnetic block can be attracted by magnetic force.

[0018] Preferably, the material of the corrugated compression hose is rubber, so that the corrugated compression hose can absorb liquid pressure and pipeline stress.

[0019] Preferably, an air inlet hole is opened at the top of the pneumatic housing, and a through tube is fixedly connected between the top of the air inlet hole and the top of the inner cavity of the rotating housing, so that the compressed gas can enter the pneumatic housing through the tube.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The circular connecting rod valve core is driven to rotate by cooperating with the half gear to cut off the valve. When the valve or pipeline leaks, the leaked toxic fluid and gas will affect the life safety of the operator, and the circular connecting rod valve core can quickly cut off the fluid flow to ensure the safety of the operator. At the same time, since the circular connecting rod valve core quickly cuts off the fluid flow when the valve or pipeline leaks, it can reduce the production interruption and equipment maintenance time caused by the leakage, thereby improving the production efficiency. This is very important for industrial production that requires continuous production, and can avoid the production interruption and equipment maintenance time caused by leakage accidents, thereby improving the production efficiency and economic benefits;

[0022] 2. The corrugated compression hose absorbs the stress of the pipeline through its own elastic expansion and contraction, which can reduce the probability of deformation of the pipeline due to temperature changes and pressure changes during operation, thereby reducing the stress generated at the connection between the pipeline and the valve body due to these deformations, further improving the sealing performance and service life of the valve body. This structure can absorb the stress of the pipeline, reduce the impact of stress on the valve body, and improve the sealing performance and service life of the valve body;

[0023] 3. By setting the circular connecting rod valve core to a disc shape, the disc-shaped circular connecting rod valve core has better sealing performance. Compared with the spherical valve core, the cross-sectional shape of the circular connecting rod valve core has smaller fluid resistance, which reduces the energy loss of the fluid when passing through the valve core, thereby reducing the pressure fluctuation and vibration of the downstream pipeline caused by the fluid resistance, and then it can better adapt to the flow characteristics of the fluid in the pipeline, reduce the impact and vibration of the fluid on the valve core, thereby reducing the possibility of leakage, and the valve core has smaller friction resistance. Secondly, since the surface of the circular connecting rod valve core is smooth and the shape is regular, the friction resistance generated by the fluid when passing through the valve core is small, while there are some grooves or protrusions on the surface of the spherical valve core. These structures will increase the friction resistance of the fluid when passing through the valve core, thereby affecting the performance and service life of the valve. In addition, the structure of the circular connecting rod valve core is simple and compact, so its volume and weight are relatively small, which makes it more convenient during installation and use, and also reduces the production cost and maintenance cost;

[0024] 4. By moving the limit column and then stretching the compression airbag, the air intake of the pneumatic housing can be increased, and the reaction speed of the piston connecting rod can be accelerated. If the air intake of the cylinder is insufficient, the reaction speed of the piston connecting rod will be slow, thereby affecting the opening and closing speed of the circular connecting rod valve core. By increasing the air intake of the cylinder, the reaction speed of the piston connecting rod can be accelerated, so that the opening and closing speed of the circular connecting rod valve core is faster, thereby improving production efficiency. At the same time, the opening and closing process of the circular connecting rod valve core will be affected by the pressure fluctuation in the pipeline, thereby affecting production efficiency and quality. However, by increasing the air intake of the cylinder, the stability of the circular connecting rod valve core can be enhanced, thereby improving production efficiency and quality, and further avoiding the problem of insufficient air intake of the cylinder, which affects the stability of the circular connecting rod valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of the main structure of the present invention;

[0026] Figure 2 It is a rear perspective schematic diagram of the main structure of the present invention;

[0027] Figure 3 It is a sectional perspective schematic diagram of the main valve body of the present invention;

[0028] Figure 4 For the present invention Figure 3 The enlarged schematic diagram at A in the middle;

[0029] Figure 5 It is a cutaway perspective schematic diagram of the detection assembly of the present invention;

[0030] Figure 6 For the present invention Figure 5 The enlarged schematic diagram of point B in the middle;

[0031] Figure 7 It is a cross-sectional perspective schematic diagram of the rotating assembly of the present invention;

[0032] Figure 8 For the present invention Figure 7 The enlarged schematic diagram at C in the middle;

[0033] Fig. 9 It is a three-dimensional schematic diagram of the speed-up component of the present invention;

[0034] Fig.10 For the present invention Fig. 9 The enlarged schematic diagram at D in the middle;

[0035] Fig.11 It is a partial cutaway perspective diagram of the upper layer of the speed-up assembly of the present invention;

[0036] Fig.12 It is a partial cross-sectional perspective schematic diagram of the lower layer of the speed-up component of the present invention.

[0037] In the figure:

[0038] 11. Valve body; 12. External shell; 13. Electromagnet; 14. Tension spring; 15. Strong magnetic round valve core; 16. Sound and light alarm; 17. Corrugated compression hose;

[0039] The detection component includes: 21, a positioning slot; 22, a detection spring; 23, a contact plate; 24, a strong magnetic block; 25, an electromagnetic pressure sensor controller;

[0040] The rotating assembly includes: 31, rotating housing; 32, circular connecting rod valve core; 33, matching half gear; 34, abutting convex strip; 35, driving half gear; 36, abutting column; 37, spur gear; 38, pneumatic housing; 39, piston connecting rod; 310, limiting convex strip; 311, sliding rack;

[0041] The speed-up component includes: 41, a supporting shell; 42, an air intake pipe; 43, a compression air bag; 44, a fixed disc; 45, a rotating disc; 46, a moving groove; 47, a limiting column; 48, a linear groove; 49, a main shaft; 410, an exhaust pipe. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Embodiment of the present invention: Please refer to Figures 1 to 12 As shown, an electromagnetic emergency shut-off valve for mechanically shutting off power by air pressure comprises a valve body 11 and an external shell 12. The external shell 12 is plugged into the surface of the valve body 11. An electromagnet 13 is fixedly connected inside the external shell 12. A tension spring 14 is fixedly connected to the side of the external shell 12 away from the electromagnet 13. A strong magnetic round valve core 15 is fixedly connected to the end of the tension spring 14 close to the electromagnet 13. The materials of the strong magnetic round valve core 15 and the strong magnetic block 24 are both neodymium iron boron, which plays a role in that the strong magnetic round valve core 15 and the strong magnetic block 24 can be attracted by magnetic force. A sound and light alarm 16 is arranged above the valve body 11, and a corrugated compression hose 17 is fixedly connected to one end of the valve body 11 away from the external shell 12. The material of the corrugated compression hose 17 is rubber, and the corrugated compression hose 17 can absorb the liquid pressure and pipeline stress. A detection component for detecting leakage in the valve is arranged inside the valve body 11, and a rotating component for rotating the valve core and cutting off the passage is arranged above the valve body 11. A speed-up component for accelerating the speed of the valve core cutting off the passage by increasing the pneumatic speed is arranged above the valve body 11;

[0044] The rotating assembly includes a rotating shell 31, which is fixedly connected to the top of the valve body 11, and the top of the rotating shell 31 is fixedly connected to the bottom of the sound and light alarm 16. A circular connecting rod valve core 32 is rotatably connected to the top of the rotating shell 31 and penetrates the valve body 11, and a matching half gear 33 is fixedly connected to the top of the circular connecting rod valve core 32, and a conflicting convex strip 34 is fixedly connected to the top of the matching half gear 33. A driving half gear 35 is rotatably connected to the bottom of the inner cavity of the rotating shell 31, and the driving half gear 35 is meshed with the matching half gear 33. A conflicting column 36 is symmetrically fixedly connected to the top of the driving half gear 35.

[0045] The speed-up assembly includes a support shell 41 , which is fixedly connected to the top of the rotating shell 31 , an air intake pipe 42 is fixedly connected inside the support shell 41 , and a compression air bag 43 is fixedly connected to the bottom of the air intake pipe 42 .

[0046] The detection component includes a positioning groove 21, which is opened on the side of the valve body 11 away from the strong magnetic round valve core 15. A detection spring 22 is fixedly connected to the inner wall of the positioning groove 21. The end of the detection spring 22 away from the strong magnetic round valve core 15 is fixedly connected to a resistance plate 23. The surface of the resistance plate 23 away from the detection spring 22 is fixedly connected to a strong magnetic block 24. An electromagnetic pressure sensor controller 25 is fixedly connected to the inner wall of the positioning groove 21 away from the detection spring 22. The electromagnetic pressure sensor controller 25 electrically controls the start and stop of the external motor, the pneumatic housing 38 and the sound and light alarm 16, and plays a role in stabilizing the electrical control of the alarm through the electromagnetic pressure sensor controller 25.

[0047] The rotating assembly also includes a spur gear 37, which is fixedly connected to the top of the driving half gear 35. A pneumatic housing 38 is fixedly connected to the inside of the rotating housing 31. An air inlet is opened at the top of the pneumatic housing 38. A through tube is fixedly connected between the top of the air inlet and the top of the inner cavity of the rotating housing 31, so that compressed gas can enter the pneumatic housing 38 through the tube. A piston connecting rod 39 is slidably connected to the inside of the pneumatic housing 38. A limiting convex strip 310 is fixedly connected to the surface of the pneumatic housing 38. One end of the limiting convex strip 310 away from the pneumatic housing 38 is fixedly connected to the inner wall of the rotating housing 31. A sliding rack 311 is slidably connected to the surface of the limiting convex strip 310. The sliding rack 311 is meshed with the spur gear 37, and the sliding rack 311 is fixedly connected to the piston connecting rod 39.

[0048] The speed-up component also includes a fixed disc 44, which is fixedly connected to the top of the rotating shell 31. A rotating disc 45 is rotatably connected inside the fixed disc 44. The surface of the rotating disc 45 is provided with motion grooves 46 arranged in a circular shape and at equal intervals. The top of the fixed disc 44 is provided with linear grooves 48 arranged in a circular shape and at equal intervals. The linear grooves 48 and the motion grooves 46 are both slidably connected with limiting columns 47. The tops of the limiting columns 47 are fixedly connected to the bottom of the compressed airbag 43. A main shaft 49 is rotatably connected to the top of the rotating shell 31. The main shaft 49 and the rotating disc 45 are connected by a belt drive. The main shaft 49 is driven and installed on an external motor, which plays a role in driving the main shaft 49 to rotate by the rotation of the output shaft of the external motor. An exhaust pipe 410 is fixedly connected to the top of the rotating shell 31 and passes through the top of the pneumatic shell 38.

[0049] The following is the initial state: the valve body 11 is filled with fluid, the valve body 11 and the corrugated compression hose 17 are both connected to the external pipeline, the positioning groove 21 is not in a stretched state, the contact plate 23 is located in the middle of the positioning groove 21, the circular connecting rod valve core 32 is not completely in contact with the inner wall of the valve body 11, the sliding rack 311 is located on the side of the limiting convex strip 310 close to the pneumatic housing 38, the compression airbag 43 is not in a stretched state, the limiting columns 47 are both located in the linear groove 48 and the moving groove 46 on the side close to the center of the rotating disk 45, the corrugated compression hose 17 is in a naturally stretched state, the tension spring 14 is not in a compressed state, and the strong magnetic circular valve core 15 is located in the external housing 12 on the side away from the circular connecting rod valve core 32.

[0050] In combination with the above embodiments, the working principle of the present invention is as follows: The following are the specific operating steps: wherein, the valve body 11 is pre-valve compensated:

[0051] like Figure 5 As shown, when the fluid is transported in the pipeline, stress and shear stress will be generated due to factors such as the fluid pressure, temperature changes and the fluid pressure in the pipeline, and the pipeline will be deformed or stressed. When the pipeline is deformed or stressed, the corrugated compression hose 17 will produce elastic deformation, and this deformation is reversible. When the external force is removed, the corrugated compression hose 17 can still return to its original shape. Due to the elastic properties of the corrugated compression hose 17, it can absorb the externally applied stress and relieve the stress on the pipeline through its own deformation. Furthermore, at this time, the corrugated compression hose 17 will be in an expanded state due to the stress of the pipeline, and absorb the stress generated by the deformation of the pipeline. When the pipeline is compressed and deformed, the corrugated compression hose 17 will be in a compressed state.

[0052] When the pipeline is subjected to stress, the corrugated compression hose 17 will disperse the stress to multiple corrugations through the corrugated structure, thereby reducing the stress on a single corrugation. In this way, the corrugated compression hose 17 itself will not be damaged by excessive stress. After the corrugated compression hose 17 absorbs the stress from the pipeline, the connection between the circular connecting rod valve core 32 inside the valve body 11 and the pipeline will become more stable. The corrugated compression hose 17 absorbs the stress of the pipeline through its own elastic expansion and contraction, which can reduce the probability of deformation of the pipeline due to temperature changes and pressure changes during operation, thereby reducing the stress generated at the connection between the pipeline and the valve body 11 due to these deformations, further improving the sealing performance and service life of the valve body 11. This structure can absorb the stress of the pipeline, reduce the influence of stress on the valve body 11, and improve the sealing performance and service life of the valve body 11. In addition, since the corrugated compression hose 17 has a good buffering effect, it can reduce the impact and vibration in the system and further enhance the stability of the system.

[0053] When the power is off, the inside of the valve body 11 is in a sealed state: Figure 3 and Figure 4 As shown, when the power is cut off due to an emergency, the electromagnet 13 will also be in a power-off state, and then no current will pass through the coil in the electromagnet 13, and then the magnetic field will disappear, and further the iron core will lose its magnetism, and the electromagnet 13 that has lost its magnetism can no longer attract the strong magnetic round valve core 15 to the electromagnet 13, and the tension spring 14 that has lost the action of external force will be in a contracted state under the action of its own elastic contraction, and drive the strong magnetic round valve core 15 to move in the direction away from the electromagnet 13. At this time, due to the movement of the strong magnetic round valve core 15, the strong magnetic round valve core 15 fits with the inner cavity of the valve body 11, and then the strong magnetic round valve core 15 makes the inside of the valve body 11 in a sealed state, and the liquid flowing in from the direction of the corrugated compression hose 17 can no longer flow through the strong magnetic round valve core 15 to the end of the valve body 11 away from the corrugated compression hose 17.

[0054] Among them, when a pipeline leaks: Figures 5 to 12 As shown, when leakage occurs inside the pipeline liquid, the liquid will flow from the high-pressure area to the low-pressure area, and then the liquid will flow from the pipeline to the outside, thereby reducing the liquid in the pipeline and the valve body 11. When the liquid inside the valve body 11 is reduced, the pressure inside the valve body 11 will also decrease.

[0055] At this time, due to the loss of liquid and the loss of internal pressure of the valve body 11, the collision amplitude between the contact plate 23 and the liquid gradually decreases, and the impact force of the detection spring 22 in the positioning groove 21 from the liquid also decreases. Then, the detection spring 22 will gradually approach the direction of the electromagnetic pressure sensor controller 25 under the action of its own elastic extension. In this process, the detection spring 22 drives the strong magnetic block 24 to move toward the electromagnetic pressure sensor controller 25 through the contact plate 23, and the strong magnetic block 24 will also gradually be attracted by the magnetic force of the electromagnetic pressure sensor controller 25. When the strong magnetic block 24 conflicts with the electromagnetic pressure sensor controller 25, the elastic electrosensitive element inside the electromagnetic pressure sensor controller 25 is squeezed, and then the resistance value of the elastic electrosensitive element inside it will change. Further, the electromagnetic pressure sensor controller 25 is subjected to the resistance force of the strong magnetic block 24 and electrically controls the external motor to start. At the same time, the electromagnetic pressure sensor controller 25 will also electrically control the sound and light alarm 16 to sound and light alarm.

[0056] like Figures 9 to 12 As shown, the rotation of the output shaft of the external motor will drive the main shaft 49 to rotate, and the main shaft 49 will make the rotating disk 45 rotate synchronously through the belt, and the rotation of the rotating disk 45 will make the limiting column 47 located in the motion groove 46 have a tendency to rotate synchronously, but the limiting column 47 will only produce a linear movement toward the side away from the center of the rotating disk 45 during the process of the linear groove 48 and the inner wall of the rotating disk 45. Then, the limiting column 47 pulls the compressed air bag 43, so that the bottom of the compressed air bag 43 is in a stretched state, and the air entering the compressed air bag 43 through the air inlet pipe 42 will increase due to the expansion of the cross-sectional area of ​​the compressed air bag 43, and further the compressed air inside the pneumatic housing 38 will increase. When the gas volume increases, it means that there is more gas in the pneumatic housing 38, which can push the piston connecting rod 39 to move faster, and further the running speed of the pneumatic housing 38 will increase accordingly. 47 moves and then stretches and compresses the airbag 43, which can increase the air intake of the pneumatic housing 38, and then speed up the reaction speed of the piston connecting rod 39. If the air intake of the pneumatic housing 38 is insufficient, the reaction speed of the piston connecting rod 39 will be slow, thereby affecting the opening and closing speed of the circular connecting rod valve core 32. By increasing the air intake of the pneumatic housing 38, the reaction speed of the piston connecting rod 39 can be accelerated, thereby making the opening and closing speed of the circular connecting rod valve core 32 faster, thereby improving production efficiency. At the same time, the opening and closing process of the circular connecting rod valve core 32 will be affected by the pressure fluctuation in the pipeline, thereby affecting production efficiency and quality. However, by increasing the air intake of the pneumatic housing 38, the stability of the circular connecting rod valve core 32 can be enhanced, thereby improving production efficiency and quality, and further avoiding the problem that the air intake of the pneumatic housing 38 is insufficient, which affects the stability of the circular connecting rod valve core 32.

[0057] like Figure 7 and Figure 8 As shown, when the electromagnetic pressure sensor controller 25 electrically controls the external motor to start, the electromagnetic pressure sensor controller 25 will also control the pneumatic housing 38 to start working. At this time, compressed gas enters the pneumatic housing 38 from the air inlet pipe 42. Because the bottom of the compressed air bag 43 is stretched, more gas enters the pneumatic housing 38 at this time. The further increase in the air pressure in the pneumatic housing 38 and the pressure difference on both sides of the pneumatic housing 38 will push the piston connecting rod 39 to move. At this time, the piston connecting rod 39 will move in the direction of the driving half gear 35. During the movement of the piston connecting rod 39, the piston connecting rod 39 drives the sliding rack 311 to slide in the direction of the limiting convex strip 310 toward the driving half gear 35. The further movement of the sliding rack 311 will drive the spur gear 37 meshing with it to rotate, and the spur gear 37 will drive the driving half gear 35 to rotate synchronously. At this time, the driving half gear 35 rotates.

[0058] When the driving half gear 35 rotates, the friction column 36 located at the top thereof firstly conflicts with the friction protrusion 34 and causes the friction protrusion 34 to rotate. The rotation of the friction protrusion 34 will drive the matching half gear 33 to rotate synchronously, and then the friction column 36 no longer conflicts with the friction protrusion 34, but the teeth of the driving half gear 35 conflicts with the teeth of the matching half gear 33. In this process, the driving half gear 35 directly drives the matching half gear 33 to rotate. As the driving half gear 35 continues to rotate, the friction column 36 conflicts with the friction protrusion 34 again. At this time, the sliding rack 311 has slid to one end of the limiting protrusion 310 close to the driving half gear 35, and under the action of the friction protrusion 34 and the friction column 36, the matching half gear 33 will only drive the circular connecting rod valve core 32 to rotate ninety degrees, thereby ensuring that each time the circular connecting rod valve core 32 rotates, it can reach the predetermined position and ensure the stability of the passage cut-off. At this time, the pneumatic housing 38 stops working.

[0059] When the cooperating half gear 33 rotates, the cooperating half gear 33 drives the circular connecting rod valve core 32 to rotate synchronously, and the circular connecting rod valve core 32 gradually rotates from a state perpendicular to the valve body 11 to a state parallel to the valve body 11. When the circular connecting rod valve core 32 rotates, its contact area with the valve body 11 is larger, and a tighter seal can be formed. When the liquid passes through the circular connecting rod valve core 32, a certain pressure distribution will be formed on its surface, further enhancing the sealing effect. By setting the circular connecting rod valve core 32 to a disc shape, the disc-shaped circular connecting rod valve core 32 has better sealing performance. Since the cross-sectional shape of the circular connecting rod valve core 32 has smaller fluid resistance than the spherical valve core, the energy loss of the fluid when passing through the valve core is reduced, thereby reducing the pressure fluctuation caused by the fluid resistance and the vibration of the downstream pipeline, and it can It better adapts to the flow characteristics of the fluid in the pipeline, reduces the impact and vibration of the fluid on the valve core, and thus reduces the possibility of leakage. The valve core has smaller friction resistance. Secondly, since the surface of the circular connecting rod valve core 32 is smooth and the shape is regular, the friction resistance generated by the fluid when passing through the valve core is smaller, and there are some grooves or protrusions on the surface of the spherical valve core. When the spherical valve core rotates, the grooves in the valve core will change the flow path of the fluid, and the flow direction of the fluid needs to adapt to the shape of the grooves, which will cause the fluid speed to slow down or generate eddy currents. These structures will increase the friction resistance of the fluid when passing through the valve core, thereby affecting the performance and service life of the valve. In addition, the circular connecting rod valve core 32 has a simple and compact structure, so its size and weight are relatively small, which makes it more convenient during installation and use, and also reduces production and maintenance costs.

[0060] like Figure 5 As shown, when the matching half gear 33 stops rotating, the circular connecting rod valve core 32 is parallel to the valve body 11 and is completely fitted with the inner wall of the valve body 11. At this time, the interior of the valve body 11 is in a sealed state through the circular connecting rod valve core 32. The matching half gear 33 drives the circular connecting rod valve core 32 to rotate to cut off the valve. When the valve or pipeline leaks, the leaked toxic fluid and gas will affect the life safety of the operator, and the circular connecting rod valve core 32 can quickly cut off the fluid flow to ensure the safety of the operator. At the same time, since the circular connecting rod valve core 32 quickly cuts off the fluid flow when the valve or pipeline leaks, the production interruption and equipment maintenance time caused by the leakage can be reduced, thereby improving the production efficiency. This is very important for industrial production that requires continuous production, and can avoid production interruption and equipment maintenance time caused by leakage accidents, thereby improving production efficiency and economic benefits.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic emergency shut-off valve for mechanically shutting off power by pneumatic pressure, comprising a valve body (11) and an external shell (12), wherein the external shell (12) is plugged into the surface of the valve body (11), an electromagnet (13) is fixedly connected to the inside of the external shell (12), a tension spring (14) is fixedly connected to the side of the external shell (12) away from the electromagnet (13), a strong magnetic round valve core (15) is fixedly connected to the end of the tension spring (14) close to the electromagnet (13), an audible and visual alarm (16) is arranged above the valve body (11), and a corrugated compression hose (17) is fixedly connected to the end of the valve body (11) away from the external shell (12), characterized in that: A detection component for detecting leakage inside the valve is arranged inside the valve body (11); a rotating component for rotating the valve core and cutting off the passage is arranged above the valve body (11); a speed-up component for increasing the speed of the valve core cutting off the passage by increasing the pneumatic speed is arranged above the valve body (11); the rotating component comprises a rotating shell (31); the rotating shell (31) is fixedly connected to the top of the valve body (11); the top of the rotating shell (31) is fixedly connected to the bottom of the sound and light alarm (16); a circular connecting rod valve core (32) is rotatably connected inside the rotating shell (31) and penetrating the top of the valve body (11); the circular connecting rod valve core (32) A matching half gear (33) is fixedly connected to the top of the matching half gear (33), a resisting convex strip (34) is fixedly connected to the top of the matching half gear (33), a driving half gear (35) is rotatably connected to the bottom of the inner cavity of the rotating shell (31), the driving half gear (35) and the matching half gear (33) are meshed with each other, and a resisting column (36) is symmetrically fixedly connected to the top of the driving half gear (35); the speed-up component comprises a supporting shell (41), the supporting shell (41) is fixedly connected to the top of the rotating shell (31), an air intake pipe (42) is fixedly connected to the inside of the supporting shell (41), and a compression air bag (43) is fixedly connected to the bottom of the air intake pipe (42); The rotating assembly further comprises a spur gear (37), the spur gear (37) being fixedly connected to the top of the driving half gear (35), a pneumatic housing (38) being fixedly connected inside the rotating housing (31), a piston connecting rod (39) being slidably connected inside the pneumatic housing (38), a limiting convex strip (310) being fixedly connected to the surface of the pneumatic housing (38), an end of the limiting convex strip (310) away from the pneumatic housing (38) being fixedly connected to the inner wall of the rotating housing (31), a sliding rack (311) being slidably connected to the surface of the limiting convex strip (310), the sliding rack (311) being meshed with the spur gear (37), and the sliding rack (311) being fixedly connected to the piston connecting rod (39); The air inlet pipe (42) is in communication with the pneumatic housing (38).

2. The electromagnetic emergency shut-off valve for mechanical shut-off by pneumatic pressure according to claim 1 is characterized in that: The detection component comprises a positioning groove (21), wherein the positioning groove (21) is arranged on a side of the valve body (11) away from the strong magnetic round valve core (15), the inner wall of the positioning groove (21) is fixedly connected with a detection spring (22), one end of the detection spring (22) away from the strong magnetic round valve core (15) is fixedly connected with a resistance plate (23), a surface of a side of the resistance plate (23) away from the detection spring (22) is fixedly connected with a strong magnetic block (24), and an electromagnetic pressure sensor controller (25) is fixedly connected to the inner wall of the side of the positioning groove (21) away from the detection spring (22).

3. The electromagnetic emergency shut-off valve for mechanical shut-off by pneumatic pressure according to claim 2, characterized in that: The speed-up assembly further comprises a fixed disc (44), the fixed disc (44) being fixedly connected to the top of the rotating shell (31), a rotating disc (45) being rotatably connected inside the fixed disc (44), a surface of the rotating disc (45) being provided with motion grooves (46) arranged in annular shapes and at equal intervals, a top of the fixed disc (44) being provided with linear grooves (48) arranged in annular shapes and at equal intervals, a limiting column (47) being slidably connected inside the linear grooves (48) and the motion grooves (46), the tops of the limiting columns (47) being fixedly connected to the bottom of the compressed air bag (43), a main shaft (49) being rotatably connected to the top of the rotating shell (31), the main shaft (49) and the rotating disc (45) being connected via a belt drive, and an exhaust pipe (410) being fixedly connected to the top of the rotating shell (31) and penetrating the top of the pneumatic shell (38).

4. The electromagnetic emergency shut-off valve for mechanical shut-off by pneumatic pressure according to claim 3 is characterized in that: The main shaft (49) is mounted on an external motor in a driven manner.

5. The electromagnetic emergency shut-off valve for mechanical shut-off by pneumatic pressure according to claim 2, characterized in that: The electromagnetic pressure sensor controller (25) electrically controls the activation and deactivation of the external motor, the pneumatic housing (38) and the sound and light alarm (16).

6. The electromagnetic emergency shut-off valve for mechanical shut-off by pneumatic pressure according to claim 2, characterized in that: The strong magnetic round valve core (15) and the strong magnetic block (24) are both made of neodymium iron boron.

7. The electromagnetic emergency shut-off valve for mechanical shut-off by pneumatic pressure according to claim 1, characterized in that: The material of the corrugated compression hose (17) is rubber.

8. The electromagnetic emergency shut-off valve for mechanical shut-off by pneumatic pressure according to claim 3, characterized in that: An air inlet hole is provided at the top of the pneumatic housing (38), and a through pipe is fixedly connected between the top of the air inlet hole and the top of the inner cavity of the rotating housing (31).

Images