Electromagnetic valve driving test device

Abstract

The present application relates to the technical field of valve, specifically relates to a kind of electromagnetic valve drive test device, including test body and the console with the electrical drive unit for driving electromagnetic valve and the control unit electric control of fixed installation in the top of test body, the console is also connected with the detection sensor of bottom end and test body output end fixed connection, the test body includes shell and the output pipe of fixed and penetrating installation in one side of shell, the output pipe is fixedly connected with the bottom of detection sensor, the other side of shell is fixed and penetrates and is installed with the anti-pressure inlet pump pipe, the bottom of shell is provided with the lower reset fixed platform of one side penetrating one side of shell, the top of shell is provided with the upper reset fixed platform of one side penetrating one side of shell, the lower reset fixed platform and the upper reset fixed platform are same structure, effectively improve service life, and make test more coherent.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and more specifically to a solenoid valve drive testing device. Background Technology

[0002] A solenoid valve is an actuator that uses electromagnetic principles (electromagnetic force generated by an electromagnetic coil) to drive the valve core to move, thereby achieving automated control of the flow direction, on / off state, or flow rate of fluids (such as gases and liquids). A solenoid valve consists of a valve body and an electromagnetic part. The valve body includes a valve cavity, valve port, sealing elements, and valve body. The electromagnetic part consists of a coil, a stationary iron core (magnetic yoke), and a moving iron core (armature). Based on the balance of electromagnetic induction and force, when the coil is energized, it generates an electromagnetic force that attracts the moving iron core (armature) from its stationary position, directly or indirectly changing the position of the valve core, that is, opening or closing the valve port.

[0003] After production, solenoid valves need to be tested using a solenoid valve drive testing device to ensure they can be driven smoothly. The solenoid valve drive testing device includes a pump station for supplying fluid, a mounting device for fixing the solenoid valve, and an electrical drive unit and control unit to drive the solenoid valve. A detection device is also provided at the output end of the solenoid valve to detect its sealing performance. The lifespan and airtightness of the solenoid valve are tested by repeatedly driving it to open and close. The test is highly reliable and easy to operate.

[0004] Although the existing technologies mentioned above can solve the corresponding technical problems, they still have certain drawbacks: In the process of testing the service life of the solenoid valve, the existing solenoid valve drive device needs to repeatedly start and close the solenoid valve through the electrical drive unit and control unit while the pump station is starting to output liquid. During the process of the solenoid valve opening and turning to close, the valve plate will quickly cut off the fluid output from the pump station, which will cause the fluid delivery pipeline of the solenoid valve drive device and the pump station to be subjected to the fluid impact caused by the water hammer effect, making the pump station prone to damage and with a short service life. At the same time, the fluid impact force is also applied to the solenoid valve, causing the solenoid valve to move back and forth due to the push of the fluid impact. After a period of testing, manual adjustment and reset are required, otherwise leakage is likely to occur. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings and deficiencies of the prior art by providing a solenoid valve drive testing device with a long service life and the ability to automatically reset the solenoid valve.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a solenoid valve drive testing device, comprising a testing body and a control panel fixedly installed on the top of the testing body, which includes an electrical drive unit for driving the solenoid valve and a control unit for electrical control. A detection sensor with its bottom fixedly connected to the output end of the testing body is also connected to the control panel. The testing body includes an outer shell and an output pipe fixedly and penetratingly installed on one side of the outer shell. The output pipe is fixedly connected to the bottom of the detection sensor. A pressure-resistant inlet pump pipe is fixedly and penetratingly installed on the other side of the outer shell. A lower reset fixing platform with one side penetrating one side of the outer shell is provided at the bottom of the outer shell, and an upper reset fixing platform with one side penetrating one side of the outer shell is provided at the top of the outer shell. The lower reset fixing platform and the upper reset fixing platform have the same structure. The pressure-resistant inlet pump pipe includes an inlet pump and a connecting pipe disposed on one side of the inlet pump and penetrating the outer shell. The inner wall of the connecting pipe is integrally formed with several... The hydraulic tank includes an elastic connecting pipe between the end of the inlet pump and the other end of the connecting pipe. A pressure beam is provided on the outer wall of the elastic connecting pipe, and a pressure rod is provided on the pressure beam. A sliding groove is provided on the end of the connecting pipe near the inlet pump. The outer wall of the pressure rod is fitted and slidably disposed within the inner wall of the sliding groove. A suction spring is also installed within the sliding groove. The lower reset fixing platform includes an oil pipe penetrating the outer shell and an oil cylinder fixedly installed within the outer shell and connected to the oil pipe. Several limiting tubes with inwardly retracting limiting rings are provided at the top of the oil cylinder. A thrust piston is slidably disposed on the inner wall of the limiting tube. A thrust rod extending from the top of the limiting tube is provided at the top of the thrust piston. A reset fixing plate is provided at the top of the thrust rod. The reset fixing plate includes a rigid frame disposed at the top of the thrust rod and a flexible plate fixed to the top surface of the rigid frame. A friction layer is provided on the upper surface of the flexible plate, and an elastic block is provided between the edge of the flexible plate and the inner wall of the rigid frame.

[0007] Further improvements include: a data panel is also installed on the control panel, and a stable chassis is provided at the bottom of the test machine.

[0008] A further improvement is that the outer wall of the connecting pipe is also permeated and fixedly provided with several dispersion tubes. The dispersion tubes include an upper punch tube that permeates and is fixedly provided on the outer wall of the connecting pipe and a sliding ring that is edge-fitted and slidably provided on the inner wall of the upper punch tube. The inner wall of the sliding ring is also fixedly installed with an upwardly protruding resistance cover, and a slow exhaust cover is fixedly installed on the top of the upper punch tube.

[0009] A further improvement is made to the slow exhaust cover, which includes a connecting cover fixedly installed on the top of the upper punch pipe and a cover plate integrally formed on the inner wall of the bottom end of the connecting cover. An exhaust pipe is provided on one side of the connecting cover. A connecting thread is integrally formed on the inner wall of the top of the connecting cover. An exhaust port is integrally formed at the center of the cover plate. A pressure block is attached to the top surface of the cover plate. A fixing block is attached to the top surface of the pressure block. The outer wall of the fixing block is engaged with the connecting thread. An exhaust cavity that communicates with the exhaust pipe is formed between the outer wall of the pressure block and the inner wall of the connecting cover. An exhaust groove is also provided on the top surface of the cover plate, which extends from the edge of the exhaust port on the cover plate to the outer edge of the cover plate.

[0010] A further improvement is that the exhaust groove is a spiral groove structure.

[0011] A further improvement is made to the following: the center of the pressure block is provided with an air inlet groove that communicates with the exhaust port, the center of the fixed block is provided with an upper air inlet that communicates with the air inlet groove, an air inlet block is fixedly installed in the upper air inlet, the air inlet block includes an air inlet block body and a shrink block integrally formed on the top of the air inlet block body, a support frame is provided on the bottom inner wall of the air inlet block body, a pressure spring is provided on the support frame, and a plug with the same shape as the inner wall of the shrink block and capable of sealing the inner wall of the shrink block is provided at the top of the pressure spring.

[0012] A further improvement is that a guide ring is provided at the center of the support frame, and a guide rod is provided at the bottom of the plug. The outer wall of the guide rod is in contact with the inner wall of the guide ring and can slide against each other.

[0013] A further improvement is that the bonding flexible plate is also embedded with several pressure blocks. Each pressure block includes a deformation frame embedded in the bonding flexible plate and pressure transmission blocks fixedly installed on both sides of the inner wall of the deformation frame. An upwardly protruding arc-shaped elastic sheet is also provided between two pressure transmission blocks.

[0014] After adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0015] In use, the solenoid valve is installed into the testing machine body and fixed by upper and lower reset fixing platforms. An electrical drive unit and control unit of the control panel are connected to the solenoid valve via wires, allowing the control panel to control the opening and closing of the solenoid valve. Then, a liquid pipeline is connected to a pressure-resistant inlet pump pipe. The inlet pump pumps liquid through a flexible connecting pipe into the connecting pipe, and then into the solenoid valve. The solenoid valve can then be tested by repeatedly opening and closing it via the control panel. After passing through the solenoid valve, the liquid is discharged through the output pipe, and simultaneously detected by a sensor. The flow rate of fluid at the output pipe position is measured to determine whether the solenoid valve is operating normally. When the solenoid valve is closed, the liquid impact generated by the solenoid valve will first flow backward and be applied to the hydraulic groove of the connecting pipe. This will disperse part of the impact force into a thrust on the connecting pipe, causing the connecting pipe to move laterally and squeezing the elastic connecting pipe. At the same time, the pressure rod moves along the sliding groove. At this time, the suction spring in the sliding groove will buffer and absorb the lateral thrust converted from the impact. This will greatly reduce the impact of the backflowing fluid, reduce the impact on the inlet pump, prevent damage to the inlet pump, and improve its service life.

[0016] When using this invention, if the solenoid valve is pushed by the reverse flow of fluid at the moment of closing, causing it to move laterally, the solenoid valve can synchronously drive the connecting pipe to move laterally. This causes the suction spring in the sliding groove to be further compressed and generate elasticity. After the fluid impact disappears, the elastic force of the suction spring can push the connecting pipe back, thereby causing the connecting pipe to push the solenoid valve to reset. There is no need to stop the machine and manually reset it after a period of testing, making the test more continuous and the operation more convenient.

[0017] In use, the solenoid valve is fixed by the upper and lower reset fixing platforms. Oil is injected into the cylinder through an external hydraulic device connected to the oil pipe, which pushes the thrust piston upward to generate pressure. At the same time, the pressure is applied to the reset fixing plate in contact with the solenoid valve. When the solenoid valve is closed and is impacted by the fluid, causing lateral displacement, the flexible plate is squeezed and deformed, pressing the elastic block of the rigid frame. This causes the elastic block and the flexible plate to generate elastic force. When the fluid impact disappears, the elastic force of the flexible plate and the elastic block pulls the solenoid valve back, thereby automatically resetting the solenoid valve. This eliminates the need for manual reset after a period of testing, making the testing more continuous and the operation more convenient.

[0018] When this invention is in use, at the instant the solenoid valve closes, the countercurrent impact fluid is forced into the dispersion tube and flows along the upper flushing tube. At this time, the impact fluid squeezes the resistance cover and pushes the resistance cover and the sliding ring upward along the upper flushing tube. The inner wall of the upper flushing tube is roughened, and high friction is generated when sliding with the outer wall of the sliding ring. This friction counteracts the impact force. At the same time, the air in the upper flushing tube is slowly discharged through the slow exhaust cover, and the air in the upper flushing tube further resists the impact force. In this way, the impact force of the fluid entering the upper flushing tube is effectively weakened, thereby reducing the impact on the inlet pump, preventing damage to the inlet pump, and improving its service life. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front view of the structural schematic diagram of the testing device of the present invention;

[0021] Figure 2 This is a schematic diagram of the front view cross-section of the test body of the present invention;

[0022] Figure 3 This is a schematic diagram of the front view cross-section of the pressure-resistant inlet pump pipe of the present invention;

[0023] Figure 4 This is a schematic diagram of the front view cross-section of the dispersion tube of the present invention;

[0024] Figure 5 This is a structural schematic diagram of the front cross-section of the slow exhaust cover of the present invention;

[0025] Figure 6 This is a top view of the cover plate of the present invention.

[0026] Figure 7 This is a structural schematic diagram of the front cross-section of the air intake block of the present invention;

[0027] Figure 8 This is a structural schematic diagram of the front view of the lower resetting fixing platform of the present invention;

[0028] Figure 9 This is a structural schematic diagram of the front view cross-section of the resetting fixing plate of the present invention;

[0029] Figure 10 This is a structural schematic diagram of the front cross-section of the pressure block of the present invention. Detailed Implementation

[0030] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0031] See Figure 1-10 As shown, the technical solution adopted in this specific embodiment is: a solenoid valve driven testing device, including a testing body 1 and a control panel 3 fixedly installed on the top of the testing body 1, which has an electrical drive unit for driving the solenoid valve and an electrical control unit. The control panel 3 is fixed to the upper surface of the testing body 1 by bolts and is electrically connected to the electrical drive unit. A detection sensor 2 is also connected to the control panel 3, with its bottom end fixedly connected to the output end of the testing body 1. The detection sensor 2 is electrically connected to the control unit inside the control panel 3 via a data cable, for real-time acquisition of fluid flow data. The testing body 1 includes... The outer casing 11 and the output pipe 15 are fixed and penetrated on one side of the outer casing 11. The output pipe 15 is fixedly connected to the bottom of the detection sensor 2. The output pipe 15 is made of stainless steel and is connected to the detection sensor 2 through a sealing threaded joint to ensure fluid sealing. The pressure-resistant liquid inlet pump pipe 14 is fixed and penetrated on the other side of the outer casing 11. The bottom of the outer casing 11 is provided with a lower reset fixing platform 13 that penetrates one side of the outer casing 11. The top of the outer casing 11 is provided with an upper reset fixing platform 12 that penetrates one side of the outer casing 11. The lower reset fixing platform 13 and the upper reset fixing platform 12 have the same structure.

[0032] Specifically, the pressure-resistant inlet pump pipe 14 includes an inlet pump 141 and a connecting pipe 142 disposed on one side of the inlet pump 141 and penetrating the outer casing 11. The inlet pump 141 is fixedly connected to the flexible connecting pipe 144 via a flange. The connecting pipe 142 is fixed to the side wall of the outer casing 11 by welding. The connecting pipe 142 is made of high-strength stainless steel, and its inner wall is integrally formed with several hydraulic grooves 149. A flexible connecting pipe 144 is provided between the end of the inlet pump 141 and the other end of the connecting pipe 142. 4. The elastic connecting pipe 144 is made of oil-resistant rubber material, which has good elasticity and pressure resistance. The outer wall of the elastic connecting pipe 144 is provided with a pressure beam 148. The pressure beam 148 is made of metal and is fixed to the outer wall of the elastic connecting pipe 144. A pressure rod 143 is provided on the pressure beam 148. A sliding groove 145 is provided on the end of the connecting pipe 142 near the liquid inlet pump 141. The outer wall of the end of the pressure rod 143 is fitted and slidably disposed on the inner wall of the sliding groove 145. A suction spring 146 is also installed in the sliding groove 145.

[0033] Meanwhile, the lower reset fixing platform 13 includes an oil pipe 132 penetrating the outer shell 11 and an oil cylinder 131 fixedly installed inside the outer shell 11 and connected to the oil pipe 132. The oil pipe 132 and the oil cylinder 131 are fixedly connected by welding. The oil cylinder 131 is fixed to the bottom inner wall of the outer shell 11 by bolts. The top of the oil cylinder 131 is provided with several limiting tubes 133 with inward limiting rings at the top. The limiting tubes 133 and the oil cylinder 131 are integrally formed and made of high-strength aluminum alloy. A thrust piston 135 is slidably provided on the inner wall of the limiting tube 133. The thrust piston 135 is made of wear-resistant cast iron and its surface is hardened. A push rod 134 extending from the top of the limiting tube 133 is provided at the top. A reset fixing plate 136 is provided at the top of the push rod 134. The reset fixing plate 136 includes a rigid frame 41 set at the top of the push rod 134 and a flexible plate 42 fixed to the top surface of the rigid frame 41. The rigid frame 41 is made of engineering plastic injection molding, and the flexible plate 42 is made of polyurethane rubber material and is fixed to the top surface of the rigid frame 41 by adhesive. A friction layer 44 is provided on the upper surface of the flexible plate 42, and an elastic block 43 is provided between the edge of the flexible plate 42 and the inner wall of the rigid frame 41. In use, the solenoid valve is installed in the test machine body 1 and the upper reset fixing platform 12 and the lower reset fixing platform 136 are used to fix the valve. The fixed platform 13 is fixed by vertical compression and connected to the solenoid valve via wires, which in turn connects the solenoid valve to the electrical drive unit and control unit of the control console 3. This allows the control console 3 to control the opening and closing of the solenoid valve. A liquid pipeline is then connected to the pressure-resistant inlet pump pipe 14. The inlet pump 141 pumps the liquid through the flexible connecting pipe 144 into the connecting pipe 142, and then into the solenoid valve. The control console 3 can then control the solenoid valve to repeatedly open and close, thus testing the solenoid valve. After passing through the solenoid valve, the liquid is discharged through the output pipe 15. Simultaneously, the detection sensor 2 measures the fluid flow data at the output pipe 15 position to determine the flow rate. Whether the solenoid valve is in normal operating condition: When the solenoid valve is closed, the liquid impact generated by the solenoid valve will first flow backward and be applied to the hydraulic groove 149 of the connecting pipe 142, thereby dispersing part of the impact force into a thrust on the connecting pipe 142, causing the connecting pipe 142 to move laterally and squeezing the elastic connecting pipe 144. At the same time, the pressure rod 143 moves along the sliding groove 145. At this time, the suction spring 146 in the sliding groove 145 will buffer and absorb the lateral thrust converted from the impact, thereby greatly reducing the impact generated by the backflowing fluid, reducing the impact on the inlet pump 141, preventing damage to the inlet pump 141, and improving its service life.

[0034] At the same time, if the solenoid valve is pushed by the reverse flow fluid at the moment of closing, causing it to move laterally, the solenoid valve can synchronously drive the connecting pipe 142 to move laterally. This causes the suction spring 146 in the sliding groove 145 to be further squeezed and generate elasticity. After the fluid impact disappears, the elastic force of the suction spring 146 can push the connecting pipe 142 back, thereby causing the connecting pipe 142 to push the solenoid valve to reset. There is no need to stop the machine and manually reset after a period of testing, making the test more continuous and the operation more convenient.

[0035] Meanwhile, during use, the solenoid valve is fixed by the upper reset fixing platform 12 and the lower reset fixing platform 13. Oil is injected into the oil cylinder 131 through the oil pipe 132 connected to an external oil pressure device, which pushes the thrust piston 135 to rise and generate pressure. At the same time, the pressure is applied to the reset fixing plate 136 that is in contact with the solenoid valve. When the solenoid valve is closed and is subjected to fluid impact and generates lateral displacement, the soft plate 42 is squeezed and deformed, which in turn compresses the elastic block 43 of the rigid frame 41. This causes the elastic block 43 and the soft plate 42 to generate elastic force at the same time. When the fluid impact disappears, the elastic force of the soft plate 42 and the elastic block 43 pulls the solenoid valve back, thereby causing the solenoid valve to automatically reset. There is no need to stop the machine and manually reset it after a period of testing, making the test more continuous and the operation more convenient.

[0036] The control panel 3 is also equipped with a data panel 4. The data panel 4 is fixed to the front of the control panel 3 by screws and is electrically connected to the control unit inside the control panel 3 for displaying test data. The bottom of the test body 1 is also equipped with a stable chassis 5. The stable chassis 5 is a welded steel plate structure and is fixed to the bottom of the test body 1 by bolts. The stable chassis 5 helps to increase the contact area between the test device and the ground, thereby making the test more stable and preventing tipping.

[0037] A plurality of dispersion tubes 147 are also penetrated and fixedly provided on the outer wall of the connecting pipe 142. The dispersion tubes 147 are fixed to the outer wall of the connecting pipe 142 by welding or threaded connection. The dispersion tubes 147 include an upper punch tube 21 that penetrates and is fixedly provided on the outer wall of the connecting pipe 142, and a sliding ring 22 that is edge-fitted and slidably provided on the inner wall of the upper punch tube 21. The inner wall of the upper punch tube 21 is roughened, and the outer wall of the sliding ring 22 is coated with a wear-resistant coating to increase the sliding friction. An upwardly protruding resistance cover 23 is also fixedly installed on the inner wall of the sliding ring 22. A slow exhaust cover 24 is fixedly installed on the top of the upper punch tube 21. The slow exhaust cover 24 includes a connecting cover 241 fixedly installed on the top of the upper punch tube 21 and an integrally formed part of the connecting pipe 142. The cover plate 246 is attached to the inner wall of the bottom end of the connecting cover 241. The connecting cover 241 is fixed to the top end of the upper punch tube 21 by a threaded connection. An exhaust pipe 243 is provided on one side of the connecting cover 241. A connecting thread 242 is integrally formed on the inner wall of the top end of the connecting cover 241. An exhaust port 247 is integrally formed at the center of the cover plate 246. A pressure block 245 is attached to the top surface of the cover plate 246. A fixing block 244 is attached to the top surface of the pressure block 245. The outer wall of the fixing block 244 is engaged with the connecting thread 242. An exhaust cavity 249 is formed between the outer wall of the pressure block 245 and the inner wall of the connecting cover 241, which is connected to the exhaust pipe 243. An exhaust groove 300 is also provided on the top surface of the cover plate 246. The 6-channel vent 247 extends to the outer edge of the cover 246. During use, at the instant the solenoid valve closes, the counter-current impact fluid is forced into the dispersion tube 147 and flows along the upper flushing tube 21. At this time, the impact fluid squeezes the resistance cover 23 and pushes the resistance cover 23, along with the sliding ring 22, upward along the upper flushing tube 21. The inner wall of the upper flushing tube 21 is roughened, generating high friction with the outer wall of the sliding ring 22 during sliding. This friction counteracts the impact force. Simultaneously, the slow exhaust cover 24 allows air in the upper flushing tube 21 to be slowly discharged. After being forced into the slow exhaust cover 24 by the resistance cover 23, the gas first passes through the center of the cover 246. The air inlet 247 enters between the cover plate 246 and the pressure block 245. The pressure block 245 and the cover plate 246 are tightly fitted with a very small gap, which causes the gas to move along the exhaust groove 300 and eventually reach the edge of the cover plate 246 and enter the exhaust cavity 249. The gas moves along the exhaust cavity 249 to the exhaust pipe 243 and is discharged outward. The long exhaust path and small exhaust space reduce the gas discharge speed. The air remaining in the upper flush pipe 21 further resists the impact force, thereby effectively weakening the impact force of the fluid entering the upper flush pipe 21, reducing the impact on the liquid inlet pump 141, preventing damage to the liquid inlet pump 141, and improving its service life.

[0038] The exhaust groove 300 has a spiral groove structure, which helps to extend the length of the exhaust groove 300, thereby further extending the gas discharge path and further reducing the exhaust speed. This allows the air in the upper flush pipe 21 to more fully absorb and resist the impact force generated by the liquid.

[0039] The pressure block 245 has an air inlet groove 248 at its center, which communicates with the exhaust port 247. The fixing block 244 has an upper air inlet at its center, which communicates with the air inlet groove 248. An air inlet block 200 is fixedly installed in the upper air inlet and is threaded into the fixing block 244. The air inlet block 200 includes an air inlet block body 31 and a contraction block 32 integrally formed on the top of the air inlet block body 31. The bottom inner wall of the air inlet block body 31 has a support frame 34, which has a cross-shaped structure and is integrally formed with the air inlet block body 31. A pressure spring 35 is provided on the support frame 34. The top of the pressure spring 35 has a plug 33 with the same shape as the inner wall of the contraction block 32 and which can seal the inner wall of the contraction block 32. The plug 33 is made of rubber and forms a sealing fit with the inner wall of the contraction block 32. During the exhaust process, the gas will enter the air inlet groove 248 and continue to move upward to... At the position of the air intake block 200, the plug 33 of the air intake block 200 is squeezed and adhered to the inner wall of the contraction block 32 under the action of the pressure spring 35 to seal it, thereby preventing the rapid leakage of air. After the impact of the solenoid valve is reopened and disappears, the fluid no longer rushes into the dispersion tube 147. At this time, the resistance cover 23 will be pulled down, creating an air pressure difference between the air in the upper flushing tube 21 and the outside. This allows the outside air to be forced in from the top of the contraction block 32 and press down on the plug 33, causing it to resist the pressure spring 35 and fall down through air pressure. This creates a gap between the plug 33 and the contraction block 32, allowing air to be injected quickly and filling the upper flushing tube 21. This allows the resistance cover 23 and the sliding ring 22 to reset more quickly. Furthermore, when the solenoid valve is quickly opened and closed, the impact can also be absorbed through the dispersion tube 147, making the frequency of impact absorption by the dispersion tube 147 higher.

[0040] The support frame 34 has a guide ring 36 at its center and a guide rod 37 at the bottom of the plug 33. The outer wall of the guide rod 37 fits against the inner wall of the guide ring 36 and can slide against each other, which helps to make the upward and downward trajectory of the plug 33 straighter and avoids skewness that would affect the sealing effect of the plug 33.

[0041] Several pressure blocks 45 are also embedded within the flexible bonding plate 42. Each pressure block 45 includes a deformable frame 451 embedded within the flexible bonding plate 42 and pressure transmission blocks 452 fixedly installed on both sides of the inner wall of the deformable frame 451. An upwardly protruding arc-shaped elastic sheet 453 is also provided between two pressure transmission blocks 452. The deformable frame 451 is formed by bending an elastic metal sheet, and the pressure transmission block 452 is made of rigid plastic and is fixed to the inner wall of the deformable frame 451 by a slot. The arc-shaped elastic sheet 453 is a spring steel sheet with both ends welded to the inner side of the pressure transmission block 452. When the flexible plate 42 is squeezed, the pressure block 45 is also compressed, which in turn compresses the deformable frame 451 from both sides. At this time, the pressure transmission block 452 can be compressed synchronously, thereby squeezing the arc-shaped elastic sheet 453, making its upward convexity higher, thereby generating upward pressure and applying it to the flexible plate 42. This allows the flexible plate 42 to generate higher pressure at the corresponding position of the arc-shaped elastic sheet 453 and adhere to the solenoid valve, thereby improving the fixing effect of the solenoid valve and making its lateral movement smaller.

[0042] Working principle of the invention: In use, the solenoid valve is installed inside the test body 1 and fixed by upper and lower reset fixing platforms 12 and 13. The solenoid valve is connected to the electrical drive unit and control unit of the control console 3 via wires, allowing the control console 3 to control the opening and closing of the solenoid valve. Then, a liquid pipeline is connected to the pressure-resistant inlet pump pipe 14. The inlet pump 141 pumps the liquid through the elastic connecting pipe 144 into the connecting pipe 142, and then into the solenoid valve. The control console 3 can then control the solenoid valve to repeatedly open and close to test it. After passing through the solenoid valve, the liquid is discharged through the output pipe 15, and simultaneously measured by the detection sensor 2. The flow rate data at the output pipe 15 is used to determine whether the solenoid valve is in normal operation. When the solenoid valve is closed, the liquid impact generated by the solenoid valve will first flow backward and be applied to the hydraulic groove 149 of the connecting pipe 142, thereby dispersing part of the impact force into a thrust on the connecting pipe 142, causing the connecting pipe 142 to move laterally and squeezing the elastic connecting pipe 144. At the same time, the pressure rod 143 moves along the sliding groove 145. At this time, the suction spring 146 in the sliding groove 145 will buffer and absorb the lateral thrust converted from the impact, thereby greatly reducing the impact generated by the backflowing fluid, reducing the impact on the inlet pump 141, preventing damage to the inlet pump 141, and improving its service life.

[0043] At the same time, if the solenoid valve is pushed by the reverse flow fluid at the moment of closing, causing it to move laterally, the solenoid valve can synchronously drive the connecting pipe 142 to move laterally. This causes the suction spring 146 in the sliding groove 145 to be further squeezed and generate elasticity. After the fluid impact disappears, the elastic force of the suction spring 146 can push the connecting pipe 142 back, thereby causing the connecting pipe 142 to push the solenoid valve to reset. There is no need to stop the machine and manually reset after a period of testing, making the test more continuous and the operation more convenient.

[0044] Meanwhile, during use, the solenoid valve is fixed by the upper reset fixing platform 12 and the lower reset fixing platform 13. Oil is injected into the oil cylinder 131 through the oil pipe 132 connected to an external oil pressure device, which pushes the thrust piston 135 to rise and generate pressure. At the same time, the pressure is applied to the reset fixing plate 136 that is in contact with the solenoid valve. When the solenoid valve is closed and is subjected to fluid impact and generates lateral displacement, the soft plate 42 is squeezed and deformed, which in turn compresses the elastic block 43 of the rigid frame 41. This causes the elastic block 43 and the soft plate 42 to generate elastic force at the same time. When the fluid impact disappears, the elastic force of the soft plate 42 and the elastic block 43 pulls the solenoid valve back, thereby causing the solenoid valve to automatically reset. There is no need to stop the machine and manually reset it after a period of testing, making the test more continuous and the operation more convenient.

[0045] This invention protects the structure of the product; the model numbers of the components are not protected by this invention, as they are common technology. Any component on the market that can achieve the functions described above can be used as an option. Therefore, the model numbers and other parameters of the components are not described in detail in this invention. The contribution of this invention lies in the scientific combination of the various components.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions above are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents. Any aspects not detailed in the present invention are well-known to those skilled in the art.

Claims

1. A solenoid valve drive testing device, comprising a test body (1) and a control panel (3) fixedly installed on the top of the test body (1) and electrically controlled by an electrical drive unit and a control unit for driving a solenoid valve, wherein a detection sensor (2) is also connected to the control panel (3) and its bottom end is fixedly connected to the output end of the test body (1), the test body (1) comprising an outer shell (11) and an output pipe (15) fixedly and penetratingly installed on one side of the outer shell (11), the output pipe (15) being fixedly connected to the bottom of the detection sensor (2), characterized in that: A pressure-resistant inlet pump pipe (14) is fixed and penetrates the other side of the outer casing (11). The bottom of the outer casing (11) is provided with a lower reset fixing platform (13) that penetrates the outer casing (11) on one side. The top of the outer casing (11) is provided with an upper reset fixing platform (12) that penetrates the outer casing (11) on one side. The lower reset fixing platform (13) and the upper reset fixing platform (12) have the same structure. The pressure-resistant inlet pump pipe (14) includes an inlet pump (141) and a pipe located on one side of the inlet pump (141) that penetrates the outer casing (11). The housing (11) has a connecting pipe (142), the inner wall of which is integrally formed with several hydraulic grooves (149). An elastic connecting pipe (144) is provided between the end of the inlet pump (141) and the other end of the connecting pipe (142). A pressure beam (148) is provided on the outer wall of the elastic connecting pipe (144). A pressure rod (143) is provided on the pressure beam (148). A sliding groove (145) is provided on the end of the connecting pipe (142) near the inlet pump (141). The end of the pressure rod (143) is... The outer wall of the part is fitted and slidably disposed on the inner wall of the sliding groove (145). A suction spring (146) is also installed in the sliding groove (145). The lower reset fixing platform (13) includes an oil pipe (132) penetrating the outer shell (11) and an oil cylinder (131) fixedly installed in the outer shell (11) and connected to the oil pipe (132). The top of the oil cylinder (131) is provided with several limiting tubes (133) with inward limiting rings at the top. A thrust piston (135) is slidably disposed on the inner wall of the limiting tube (133). The thrust piston (135) is provided with a thrust rod (134) extending from the top of the limiting tube (133). The top of the thrust rod (134) is provided with a reset fixing plate (136). The reset fixing plate (136) includes a rigid frame (41) disposed at the top of the thrust rod (134) and a soft plate (42) fixed to the top surface of the rigid frame (41). The upper surface of the soft plate (42) is provided with a friction layer (44). An elastic block (43) is provided between the edge of the soft plate (42) and the inner wall of the rigid frame (41).

2. The solenoid valve drive testing device according to claim 1, characterized in that: The control panel (3) is also equipped with a data panel (4), and the bottom of the test body (1) is also equipped with a stable chassis (5).

3. The solenoid valve drive testing device according to claim 1, characterized in that: The outer wall of the connecting pipe (142) is also permeated and fixedly provided with a plurality of dispersion pipes (147). The dispersion pipes (147) include an upper punch pipe (21) that permeates and is fixedly provided on the outer wall of the connecting pipe (142) and a sliding ring (22) that is edge-fitted and slidably provided on the inner wall of the upper punch pipe (21). The inner wall of the sliding ring (22) is also fixedly installed with an upwardly protruding resistance cover (23). The top of the upper punch pipe (21) is fixedly installed with a slow exhaust cover (24).

4. The solenoid valve drive testing device according to claim 3, characterized in that: The slow exhaust cover (24) includes a connecting cover (241) fixedly installed at the top of the upper punch pipe (21) and a cover plate (246) integrally formed on the inner wall of the bottom end of the connecting cover (241). An exhaust pipe (243) is provided on one side of the connecting cover (241). A connecting thread (242) is integrally formed on the inner wall of the top end of the connecting cover (241). An exhaust port (247) is integrally formed at the center of the cover plate (246). A pressure block (245) is attached to the top surface of the cover plate (246). A fixing block (244) is attached to the top surface of the block (245). The outer wall of the fixing block (244) is engaged with the connecting thread (242). An exhaust cavity (249) is formed between the outer wall of the pressure block (245) and the inner wall of the connecting cover (241) and is connected to the exhaust pipe (243). An exhaust groove (300) is also provided on the top surface of the cover plate (246). The exhaust groove (300) extends from the edge of the cover plate (246) at the exhaust port (247) to the outer edge of the cover plate (246).

5. The solenoid valve drive testing device according to claim 4, characterized in that: The exhaust groove (300) has a spiral groove structure.

6. The solenoid valve drive testing device according to claim 4, characterized in that: The pressure block (245) has an air inlet groove (248) at its center that communicates with the exhaust port (247). The fixed block (244) has an upper air inlet at its center that communicates with the air inlet groove (248). An air inlet block (200) is fixedly installed inside the upper air inlet. The air inlet block (200) includes an air inlet block body (31) and a shrink block (32) integrally formed on the top of the air inlet block body (31). A support frame (34) is provided on the bottom inner wall of the air inlet block body (31). A pressure spring (35) is provided on the support frame (34). A plug (33) with the same shape as the inner wall of the shrink block (32) and capable of sealing the inner wall of the shrink block (32) is provided at the top of the pressure spring (35).

7. The solenoid valve drive testing device according to claim 6, characterized in that: The support frame (34) has a guide ring (36) at its center and a guide rod (37) at the bottom of the plug (33). The outer wall of the guide rod (37) is in contact with the inner wall of the guide ring (36) and can slide against each other.

8. The solenoid valve drive testing device according to claim 1, characterized in that: The bonding soft plate (42) also has a number of pressure blocks (45) embedded in it. The pressure block (45) includes a deformation frame (451) embedded in the bonding soft plate (42) and pressure transmission blocks (452) fixedly installed on both sides of the inner wall of the deformation frame (451). An upwardly protruding arc-shaped elastic sheet (453) is also provided between two pressure transmission blocks (452).

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