A diaphragm life test device

Abstract

The present invention relates to the technical field of diaphragm test, and specifically relates to a diaphragm life test device, which includes a base. A rectangular groove is formed in the vertical end face of the base, and a first telescopic rod is fixed to the horizontal end face of the base. A reciprocating impact mechanism is fixed to the telescopic end of the first telescopic rod. The reciprocating impact mechanism includes a fixed frame fixed to the telescopic end of the first telescopic rod. A rectangular shell is fixed to one end of the fixed frame away from the rectangular groove. A support block is arranged in the rectangular shell, and an adjusting component is fixed in the support block. The two-way pumping device provided by the present invention can adjust the hydraulic oil volume in the sealed shell and the hydraulic oil pipe. The moving distance of the rubber block is inversely proportional to the moving distance of the placement plate, and the hydraulic oil volumes in the two cavities are inversely proportional. That is to say, the two-way pumping device will pump hydraulic oil into the hydraulic oil pipe according to the diameter of the diaphragm and adjust it to an appropriate limit range, without the need for sequential adjustment, making the device more convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of diaphragm test, and specifically relates to a diaphragm life test device. Background Art

[0002] As a key component, the diaphragm has a wide range of applications in many fields. In a pressure reducing valve, the diaphragm needs to deform to adjust the valve. The entire valve completely relies on the diaphragm to prevent external leakage. Its life determines the stable operation duration of the pressure reducing valve. Currently, the industry commonly uses the reciprocating impact method to test the diaphragm life. For example, a life test device for the diaphragm of a diaphragm compressor disclosed in the publication number CN115406781A can test the life of the diaphragm.

[0003] To ensure the accuracy of the test, when performing a reciprocating impact on the diaphragm, it is necessary to limit its position through a limiting device to prevent the force application point of the diaphragm from shifting, which affects the test accuracy of the device for the diaphragm. In the test devices of some small enterprises or research institutions, it is necessary to manually adjust the impact distance and the limiting range of the components, resulting in low automation of the device. It takes time to adjust the components before the test, making it more complex to use. And detecting the limiting range through sensors has a high cost for the device and cannot be fully popularized. Summary of the Invention

[0004] Aiming at the above-mentioned shortcomings of the existing technology, the present invention provides a diaphragm life test device, which can effectively solve the problem that the existing technology needs to sequentially adjust the impact distance and the limiting range of the components.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0006] The present invention provides a diaphragm life test device, including a base;

[0007] A reciprocating impact mechanism, a rectangular groove is opened on the vertical end face of the base, and a telescopic rod is fixed on the horizontal end face of the base. The reciprocating impact mechanism includes a fixed frame fixed to the telescopic end of the telescopic rod. A rectangular shell is fixed at one end of the fixed frame away from the rectangular groove. A support block is provided in the rectangular shell, and an adjustment component is fixed in the support block;

[0008] A triggering mechanism, the triggering mechanism includes a sealed housing fixed to the fixed frame. A communicating housing is fixed at one end of the sealed housing away from the telescopic rod. An arc-shaped hole is opened on the upper inner wall of the sealed housing and is connected to the communicating housing. A hydraulic oil pipe penetrates through the communicating housing. A piston rod two is hermetically slid in the hydraulic oil pipe. A two-way pumping device is provided between the hydraulic oil pipe and the sealed housing. The two-way pumping device is connected to the hydraulic oil pipe and the sealed housing through pipelines;

[0009] The limiting mechanism is fixed on the base;

[0010] The controller body.

[0011] Preferably, the adjusting assembly includes a sealing shell fixed in the support block. A limiting hollow plate is fixed in the sealing shell. Above the limiting hollow plate, there is a piston rod part one. The piston rod part one slides airtightly in the sealing shell. The upper end of the piston rod part one is fixed with a cam block. The space above the piston rod two in the hydraulic oil pipe and below the limiting hollow plate in the sealing shell is filled with hydraulic oil.

[0012] Preferably, a cylinder is fixed at the lower end of the sealing outer shell. The telescopic end of the cylinder penetrates through the sealing outer shell and is fixed with a piston plate one that slides airtightly in the sealing outer shell. One end of the connecting outer shell away from the sealing outer shell is fixed with an adjusting shell body. A plurality of baffles are fixed in the adjusting shell body. The baffles divide the adjusting shell body into a plurality of sealed cavities. The sealed cavities are communicated with the connecting outer shell. A piston rod part two slides airtightly in the sealed cavity. One end of the piston rod part two away from the sealing outer shell penetrates through the adjusting shell body and is fixed with a toothed block. The toothed block is adapted to the components in the limiting mechanism.

[0013] Preferably, a driven transmission gear one is rotatably connected in the rectangular shell. One side of the transmission gear one is meshed with a transmission gear two. The support block is fixedly connected with the transmission gear two. A reciprocating plate is elastically hinged in the rectangular shell. The reciprocating plate is located below the support block and fits with its outer side surface. The lower end of the reciprocating plate is rotatably connected with an impact assembly. The number of teeth of the transmission gear one is less than that of the transmission gear two.

[0014] Preferably, the impact assembly includes a sealing pipe fixed at the lower end of the rectangular shell. A fixed pipe is fixed in the sealing pipe. Through holes are circumferentially arrayed on the inner wall of the fixed pipe. A pressing column slides in the sealing pipe. The pressing column is rotatably connected with the lower end of the reciprocating plate. The lower end of the pressing column is fixed with a movable sleeve. The movable sleeve slides on the outer surface of the fixed pipe. The inner top wall of the movable sleeve is fixed with a pressing rod. An elastic member is fixed between the movable sleeve and the fixed pipe. The lower end of the sealing pipe is fixed with a sealing suction cup made of soft material. The lower end of the pressing rod is fixed with a rubber block.

[0015] Preferably, the sealing pipe is connected with an air venting device through a pipeline.

[0016] Preferably, the limiting mechanism includes a base fixed on the base. An activity circular plate is rotatably connected to the upper end of the base. A limiting shell is fixed to the upper end of the base. A planar thread disc is fixed to the upper end of the activity circular plate. The planar thread disc is located inside the limiting shell. A plurality of limiting blocks meshing with the planar thread disc are arranged above the limiting shell. A limiting plate is fixed to the inner ends of the plurality of limiting blocks. A placement plate is fixed to the middle of the upper end of the base. A support shaft is arranged on one side of the base. Above the support shaft, a transmission gear three rotatably installed in a rectangular groove is arranged. The transmission gear three can mesh with the tooth block after moving.

[0017] Preferably, the activity circular plate is connected to the support shaft by a belt drive, and the support shaft is connected to the transmission gear three by a commutation component.

[0018] The technical solution provided by the present invention has the following beneficial effects compared with the known prior art:

[0019] By setting the two-way pumping device to adjust the hydraulic oil volume in the sealing shell and the hydraulic oil pipe, the moving distance of the rubber block is inversely proportional to the moving distance of the placement plate, and the adjustment of the hydraulic oil volume in the sealing shell and the hydraulic oil pipe is inversely proportional. That is to say, the two-way pumping device will pump hydraulic oil into the hydraulic oil pipe according to the diameter of the diaphragm, so that the limiting mechanism is adjusted to an appropriate limiting range, and there is no need to adjust the reciprocating impact mechanism and the limiting mechanism in sequence, making the device more convenient to use and having a high degree of automation.

[0020] During the test, the sealing pipe and the fixed pipe will switch back and forth between the airtight connection state and the airtight plugging state. Without affecting the test, the air in the sealing pipe will enter the fixed pipe through the through hole and finally flow to the surface of the diaphragm, which can not only cool it, but also prevent the diaphragm from adsorbing on the surface of the rubber block and moving upward, ensuring the accuracy of the device during the test.

[0021] The limiting plate therein can limit the diaphragm, ensuring that the force application point of the diaphragm during the test will not shift and will not prevent the deformation of the diaphragm during the test, making the device have a good test effect, and the limiting range can be adaptively adjusted according to the moving distance of the rubber block, making the device have good adaptability and being able to test diaphragms of different sizes. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 Schematic diagram of the overall structure of the present invention;

[0024] Figure 2 Schematic diagram of the internal structure of the present invention;

[0025] Figure 3 Schematic diagram of a partial internal structure of the present invention;

[0026] Figure 4 Schematic diagram of the internal structure of the reciprocating impact mechanism of the present invention;

[0027] Figure 5 Schematic diagram of the internal structure of the adjustment component of the present invention;

[0028] Figure 6 Schematic diagram of the internal structure of the impact component of the present invention;

[0029] Figure 7 Schematic diagram of the internal structure of the trigger mechanism of the present invention;

[0030] Figure 8 is Figure 7 enlarged view of location A in

[0031] Figure 9 Schematic diagram of the position structure of the limiting mechanism of the present invention.

[0032] Reference numerals: 1, base; 2, reciprocating impact mechanism; 3, trigger mechanism; 4, limiting mechanism; 5, controller body; 20, rectangular groove; 21, rectangular shell; 22, first transmission gear; 23, second transmission gear; 24, support block; 25, adjustment component; 26, reciprocating plate; 27, impact component; 28, fixing bracket; 29, first telescopic rod; 251, sealing shell; 252, limiting hollow plate; 253, first piston rod member; 254, cam block; 271, sealing tube; 272, fixed tube; 273, through hole; 274, pressing column; 275, movable sleeve; 276, pressing rod; 277, elastic member; 278, sealing suction cup; 279, rubber block; 30, toothed block; 31, sealing outer shell; 32, cylinder; 33, first piston plate; 34, communicating outer shell; 35, hydraulic oil pipe; 36, second piston rod; 37, adjustment housing; 38, baffle; 39, second piston rod member; 41, base; 42, movable circular plate; 43, planar threaded disc; 44, limiting housing; 45, limiting block; 46, limiting plate; 47, placing plate; 48, support shaft; 49, third transmission gear. Detailed implementation manners

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] The present invention will be further described below with reference to the embodiments.

[0035] Embodiment: Refer to Figures 1 to 9 , a diaphragm life test device, including a base 1, a rectangular groove 20 is formed in the vertical end face of the base 1, a first telescopic rod 29 is fixed to the horizontal end face of the base 1, a reciprocating impact mechanism 2 fixed to the telescopic end of the first telescopic rod 29, a triggering mechanism 3 fixed to a fixing frame 28, a limiting mechanism 4 fixed to the base 1, and a controller main body 5;

[0036] It should be noted that before the test, the diaphragm is limited in the limiting mechanism 4 to ensure that the force application point of the impact component in the reciprocating impact mechanism 2 on the diaphragm does not shift during the test, ensuring the test effect of the device. Then, the surface of the diaphragm is impacted by the reciprocating movement of the components in the reciprocating impact mechanism 2. Finally, the service life of the diaphragm is tested. Directly using equipment such as an electric cylinder to reciprocally impact the surface of the diaphragm causes relatively large losses to the electric cylinder. However, the mechanical mechanism in the reciprocating impact mechanism 2 can greatly reduce the loss degree of mechanical components during the reciprocating impact process. The controller main body 5 can control all electrical equipment in the device until the diaphragm can no longer be used normally. The service life of the diaphragm is calculated by the number of impacts on the diaphragm. It should be noted that the control of the above electrical equipment, the calculation of the number of impacts, and the final inability of the diaphragm to be used adopt mature detection and control technologies, so they will not be elaborated here. And the diaphragm used for the test of this device is a metal diaphragm.

[0037] Further explanation, in order to better drive the components to reciprocate, the following settings are made, such as Figure 4As shown in the figure, the reciprocating impact mechanism 2 includes a fixing frame 28 fixed to the telescopic end of the first telescopic rod 29. At one end of the fixing frame 28 away from the rectangular groove 20, a rectangular shell 21 is fixed. Inside the rectangular shell 21, there is a support block 24. An adjusting assembly 25 is fixed inside the support block 24. A driven first transmission gear 22 is rotatably connected inside the rectangular shell 21. On one side of the first transmission gear 22, there is a meshing second transmission gear 23. The number of teeth of the first transmission gear 22 is less than that of the second transmission gear 23. Through the transmission between the two, the torque of the second transmission gear 23 can be increased, so that the second transmission gear 23 has better stability. At the same time, there is no need to deliberately make the motor rotate at a low speed, so that the motor can operate normally. The support block 24 is fixedly connected to the second transmission gear 23. An elastic hinge of a reciprocating plate 26 is provided inside the rectangular shell 21;

[0038] Then, the reciprocating plate 26 is located below the support block 24 and fits against its outer side. A torsion spring is provided at the connection between the reciprocating plate 26 and the inner wall of the rectangular shell 21. The torsion spring can drive the downwardly rotated reciprocating plate 26 to reset. The lower end of the reciprocating plate 26 is rotatably connected to an impact assembly 27. The double - way pumping device is fixed between the fixing frame 28 and the rectangular shell 21;

[0039] Specifically, the motor drives the first transmission gear 22 and the second transmission gear 23 to rotate simultaneously. The support block 24 and the adjusting assembly 25 will rotate simultaneously with the second transmission gear 23. When the adjusting assembly 25 contacts the reciprocating plate 26, it will push the reciprocating plate 26 to rotate downward. After the adjusting assembly 25 no longer contacts the reciprocating plate 26, the torsion spring therein can drive the reciprocating plate 26 to reset, so that the reciprocating plate 26 can drive the components in the impact assembly 27 to move up and down reciprocally.

[0040] For further explanation, the following settings are made to adjust the reciprocating distance of the components inside the device, as Figure 5 As shown in the figure, the adjusting assembly 25 includes a sealing shell 251 fixed inside the support block 24. Inside the sealing shell 251, a limiting hollow plate 252 is fixed. On the upper side of the limiting hollow plate 252, there is a first piston rod member 253. The first piston rod member 253 is air - tightly slidable inside the sealing shell 251. The upper end of the first piston rod member 253 is fixed with a cam block 254. The position of the cam block 254 is adjusted by the hydraulic oil volume inside the sealing shell 251. The farther the cam block 254 is from the support block 24, the higher the downward rotation angle of the reciprocating plate 26.

[0041] For further explanation, the following settings are made to better conduct an impact test on the diaphragm, as Figure 6As shown, the impact assembly 27 includes a sealing tube 271 fixed to the lower end of the rectangular shell 21. The sealing tube 271 is connected to a ventilation device through a pipeline. A fixed tube 272 is fixed inside the sealing tube 271. Through holes 273 are arranged in a circumferential array on the inner wall of the fixed tube 272. A pressing column 274 is slidably connected inside the sealing tube 271. The pressing column 274 is rotatably connected to the lower end of the reciprocating plate 26. A movable sleeve 275 is fixed to the lower end of the pressing column 274. When the movable sleeve 275 moves downward, the movable sleeve 275 will hermetically block the through holes 273, so that the air in the sealing tube 271 cannot enter the fixed tube 272, and the temperature will not affect the normal test of the device. When the movable sleeve 275 moves upward, the fixed tube 272 and the sealing tube 271 will become in an airtight communication state. The movable sleeve 275 slides on the outer surface of the fixed tube 272. A pressing rod 276 is fixed to the inner top wall of the movable sleeve 275. An elastic member 277 is fixed between the movable sleeve 275 and the fixed tube 272;

[0042] Then, a sealing suction cup 278 made of soft material is fixed to the lower end of the sealing tube 271. The sealing suction cup 278 is made of soft material. A rubber block 279 is fixed to the lower end of the pressing rod 276. The rubber block 279 is also made of soft material and will not cause additional loss to the diaphragm during impact. When the rubber block 279 continuously impacts the diaphragm, the diaphragm will deform reciprocally and then recover. Due to the characteristics of the metal, during the process of reciprocating bending, a certain amount of heat will be generated on the diaphragm. The ventilation device therein can make the air flow towards the surface of the diaphragm to reduce the temperature on the surface of the diaphragm;

[0043] Specifically, the pressing column 274 and the movable sleeve 275 will reciprocate up and down with the reciprocating plate 26, so that the pressing rod 276 and the rubber block 279 continuously impact the surface of the diaphragm for a life test. When the movable sleeve 275 and the rubber block 279 reciprocate up and down, when the movable sleeve 275 moves upward, the air in the sealing tube 271 enters the fixed tube 272 through the through holes 273 and finally flows to the surface of the diaphragm, which can not only cool it, but also prevent the diaphragm from adsorbing on the surface of the rubber block 279 and moving upward. The diaphragm is generally an arc-shaped disc, and the larger its diameter, the greater the arc of the surface protrusion. By limiting the reciprocating movement distance of the rubber block 279, the actual working condition of the diaphragm in the pressure reducing valve can be better simulated, and the diaphragm will not be directly impacted by the rubber block 279 and deformed and unable to recover.

[0044] Further explanation, in order to adjust the limiting range of the limiting mechanism 4 for the diaphragm, the following settings are made, such as Figure 7 and Figure 8As shown, the triggering mechanism 3 includes a sealed housing 31 fixed to the fixed frame 28. The sealed housing 31 is filled with hydraulic oil. A cylinder 32 is fixed to the lower end of the sealed housing 31. The telescopic end of the cylinder 32 penetrates through the sealed housing 31 and is fixed with a first piston plate 33 that slides airtightly within the sealed housing 31. A connecting housing 34 is fixed to one end of the sealed housing 31 away from the first telescopic rod 29. An arc-shaped hole is formed in the upper inner wall of the sealed housing 31 and is connected to the connecting housing 34. A hydraulic oil pipe 35 penetrates through the connecting housing 34. A second piston rod 36 slides airtightly within the hydraulic oil pipe 35.

[0045] Then, a regulating housing 37 is fixed to the end of the connecting housing 34 away from the sealed housing 31. A plurality of baffles 38 are fixed within the regulating housing 37. The baffles 38 divide the regulating housing 37 into a plurality of sealed chambers. The sealed chambers are connected to the connecting housing 34 through holes. The second piston rod 36 is located between two sealed chambers and will airtightly block the sealed chamber on the side away from the regulating assembly 25. The hydraulic oil within the sealed housing 31 and the connecting housing 34 cannot enter the sealed chamber. A second piston rod member 39 slides airtightly within the sealed chamber. The end of the second piston rod member 39 away from the sealed housing 31 penetrates through the regulating housing 37 and is fixed with a toothed block 30. The toothed block 30 is adapted to the components in the limiting mechanism 4.

[0046] Furthermore, a two-way pumping device is provided between the hydraulic oil pipe 35 and the sealed housing 251. The two-way pumping device is connected to the hydraulic oil pipe 35 and the sealed housing 251 through pipes. Hydraulic oil fills the space above the second piston rod 36 within the hydraulic oil pipe 35 and below the limiting hollow plate 252 within the sealed housing 251.

[0047] The amount of hydraulic oil within the sealed housing 251 is proportional to the diaphragm diameter, and the amount of hydraulic oil within the hydraulic oil pipe 35 is inversely proportional to the diaphragm diameter. The position of the second piston rod 36 can be controlled through the amount of hydraulic oil within the hydraulic oil pipe 35. Only when the second piston rod 36 moves to one side of the second piston rod member 39 can the airtight block between the sealed chamber and the connecting housing 34 be released.

[0048] That is to say, after the hydraulic oil enters the hydraulic oil pipe 35, it will push the second piston rod 36 to move. At this time, the cylinder 32 is started to drive the first piston plate 33 to move within the sealed housing 31. During the movement of the first piston plate 33, it will push the hydraulic oil within the sealed housing 31 to flow into the connecting housing 34 and then into the sealed chamber, but it can only flow into the sealed chamber that is not airtightly blocked by the second piston rod 36. The hydraulic oil that enters the sealed chamber will push the second piston rod member 39 and the toothed block 30 within it to move simultaneously until the cylinder 32 can no longer push the hydraulic oil to flow. The toothed block 30 will move to a position where it can remain engaged with the third transmission gear 49, and then the driving of the first piston plate 33 by the cylinder 32 can be stopped, enabling the toothed block 30 to remain engaged with the third transmission gear 49 during the subsequent downward movement.

[0049] Further explanation is as follows. In order to limit the diaphragm to be tested, the following settings are made. As Figure 9 shown, the limiting mechanism 4 includes a base 41 fixed on the base 1. A movable circular plate 42 is rotatably connected to the upper end of the base 41. A limiting housing 44 is fixed to the upper end of the base 41. A planar threaded disc 43 is fixed to the upper end of the movable circular plate 42. The planar threaded disc 43 is located inside the limiting housing 44. Above the limiting housing 44, there are a plurality of limiting blocks 45 meshing with the planar threaded disc 43. The planar threaded disc 43, the limiting housing 44 and the limiting blocks 45 form a three-jaw chuck. When the planar threaded disc 43 rotates, the plurality of limiting blocks 45 will move in opposite directions. When the fixing frame 28 moves downward, the plurality of limiting blocks 45 will move towards each other. When the fixing frame 28 moves upward, the plurality of limiting blocks 45 will move away from each other. It should be noted that the point cloud distance of the planar threaded disc 43 along a certain direction of the shape trajectory gradually increases or decreases from the axis of the planar threaded disc 43. This causes a slight distance difference between the limiting blocks 45 and the axis of the planar threaded disc 43, which can be compensated by setting the length of the limiting blocks 45 so that the plurality of limiting blocks 45 can synchronously gather and clamp or disperse and release the diaphragm;

[0050] Then, limiting plates 46 are fixed to the mutually approaching ends of the plurality of limiting blocks 45. A placement plate 47 is fixed to the middle of the upper end of the base 41. A support shaft 48 is provided on one side of the base 41. Above the support shaft 48, a third transmission gear 49 rotatably installed in a rectangular groove 20 is provided. The third transmission gear 49 can mesh with the moved tooth block 30. The movable circular plate 42 and the support shaft 48 are connected by a belt drive. The support shaft 48 and the third transmission gear 49 are connected by a commutation component. The commutation component is composed of two shafts and bevel gears, so that the third transmission gear 49 can drive the support shaft 48 to rotate;

[0051] Specifically, the rotating third transmission gear 49 will drive the support shaft 48 and the movable circular plate 42 to rotate simultaneously. The limiting housing 44 will rotate along with the movable circular plate 42. Under the limiting action of the planar threaded disc 43 on the two limiting blocks 45, during the rotation of the limiting housing 44, it will drive the plurality of limiting blocks 45 to move towards each other. The plurality of limiting plates 46 will also move towards each other along with the limiting blocks 45 to limit the diaphragm placed on the placement plate 47.

[0052] The working principle of the present invention is as follows: After placing the diaphragm on the placement plate 47, the two-way pumping device is started according to the diameter of the diaphragm by the controller main body 5. The smaller the diameter of the diaphragm, the less the hydraulic oil volume in the sealing shell 251, preventing the rubber block 279 from moving too much and directly impacting the diaphragm to deform and unable to recover. Since the hydraulic oil volume is constant, when the hydraulic oil volume in the sealing shell 251 decreases, the hydraulic oil volume in the hydraulic oil pipe 35 will increase, enabling the tooth block 30 to better drive the multiple limiting plates 46 to limit the diaphragm (the specific description here is as follows). That is to say, the hydraulic oil volume in the sealing shell 251 is proportional to the diaphragm diameter, and the hydraulic oil volume in the hydraulic oil pipe 35 is inversely proportional to the diaphragm diameter. After adjusting the lubricating oil volume in the sealing shell 251 and the hydraulic oil pipe 35 through the two-way pumping device, the test work on the diaphragm can be carried out;

[0053] After the hydraulic oil pumped out from the sealing shell 251 by the two-way pumping device enters the hydraulic oil pipe 35, the impact force generated by the flowing hydraulic oil will push the piston rod two 36 to move. At this time, the air cylinder 32 is started to push the piston plate one 33 to move upward in the sealing outer shell 31. During the movement of the piston plate one 33, it will push the hydraulic oil in the sealing outer shell 31 to flow into the communicating outer shell 34 and then enter the sealing cavity, but it can only flow into the sealing cavity that is not air-sealed and blocked by the piston rod two 36. The hydraulic oil entering the sealing cavity will push the piston rod part two 39 and the tooth block 30 in it to move simultaneously, so that the tooth block 30 can remain engaged with the transmission gear three 49 during the subsequent downward movement. Then, the telescopic rod one 29 is started to drive the fixing frame 28 to move downward. The sealing outer shell 31 and the moved tooth block 30 will move downward with the fixing frame 28. During the downward movement of the tooth block 30, it will drive the transmission gear three 49 to rotate;

[0054] The rotating transmission gear three 49 will drive the support shaft 48 and the movable circular plate 42 to rotate simultaneously. The limiting housing 44 will rotate with the movable circular plate 42. Under the limiting action of the planar thread disc 43 on the two limiting blocks 45, during the rotation of the limiting housing 44, it will drive the multiple limiting blocks 45 to move towards each other. The multiple limiting plates 46 will also move towards each other with the limiting blocks 45 to limit the diaphragm placed on the placement plate 47, keeping the diaphragm centered at all times to ensure that the force application point on the diaphragm will not shift during the test process, making the device have a better test effect;

[0055] According to the size limitation of the diaphragm, when the equal-sealing suction cup 278 moves to attach to the diaphragm, the first telescopic rod 29 can be stopped from shortening any further. Finally, the motor and the ventilation device are started. The motor will drive the first transmission gear 22 and the second transmission gear 23 to rotate simultaneously. The support block 24 and the adjustment assembly 25 will rotate simultaneously with the second transmission gear 23. When the cam block 254 contacts the reciprocating plate 26, it will push the reciprocating plate 26 to rotate downward. After the cam block 254 no longer contacts the reciprocating plate 26, the torsion spring therein can drive the reciprocating plate 26 to reset, enabling the reciprocating plate 26 to drive the components in the impact assembly 27 to move up and down reciprocally. By adjusting the position of the cam block 254 through the hydraulic oil volume in the sealing shell 251, the farther the cam block 254 is from the support block 24, the higher the angle at which the reciprocating plate 26 rotates downward. For diaphragms with larger diameters, the reciprocating plate 26 should rotate at a smaller angle to prevent the components in the impact assembly 27 from directly impacting the diaphragm and deforming it beyond recovery.

[0056] Among them, the pressing column 274 and the movable sleeve 275 will move up and down reciprocally with the reciprocating plate 26, causing the pressing rod 276 and the rubber block 279 to continuously impact the surface of the diaphragm for life test detection. When the movable sleeve 275 and the rubber block 279 move up and down reciprocally, the ventilation device will inject air into the sealing tube 271 through a pipeline. When the movable sleeve 275 moves upward, the air in the sealing tube 271 will enter the fixed tube 272 through the through hole 273 and finally flow to the surface of the diaphragm. This can not only cool it but also prevent the diaphragm from adhering to the surface of the rubber block 279 and moving upward, ensuring the accuracy of the device during the test.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A diaphragm life test device, characterized in that: The diaphragm is a metal diaphragm, comprising: Base (1); A reciprocating impact mechanism (2), wherein a rectangular groove (20) is formed on the vertical end surface of the base (1), and a telescopic rod (29) is fixed to the transverse end surface of the base (1); The reciprocating impact mechanism (2) comprises a fixing frame (28) fixed to the telescopic end of a telescopic rod (29); a rectangular shell (21) is fixed to one end of the fixing frame (28) away from the rectangular groove (20); a support block (24) is provided in the rectangular shell (21); an adjusting assembly (25) is fixed in the support block (24); a driven transmission gear (22) is rotatably connected in the rectangular shell (21); a transmission gear (23) is meshed with one side of the transmission gear (22); the support block (24) is fixedly connected to the transmission gear (23); a reciprocating plate (26) is elastically hinged in the rectangular shell (21); the reciprocating plate (26) is located below the support block (24) and is in contact with the outer side surface thereof; the lower end of the reciprocating plate (26) is rotatably connected to the impact assembly (27); the number of teeth of the transmission gear (22) is less than the number of teeth of the transmission gear (23); The adjustment component (25) comprises a sealing shell (251) fixed in the support block (24); a limiting hollow plate (252) is fixed in the sealing shell (251); a piston rod member (253) is provided on the upper side of the limiting hollow plate (252); the piston rod member (253) slides airtightly in the sealing shell (251); a cam block (254) is fixed at the upper end of the piston rod member (253); and hydraulic oil is filled above the piston rod (36) in the hydraulic oil pipe (35) and below the limiting hollow plate (252) in the sealing shell (251); The trigger mechanism (3) comprises a sealing shell (31) fixed on a fixing frame (28), a connecting shell (34) being fixed to one end of the sealing shell (31) away from the telescopic rod (29), an arc-shaped hole being provided on the upper inner wall of the sealing shell (31) and being connected to the connecting shell (34), a hydraulic oil pipe (35) being provided through the connecting shell (34), a piston rod (36) being airtightly slidable in the hydraulic oil pipe (35), a bidirectional pumping device being provided between the hydraulic oil pipe (35) and the sealing shell (251), the bidirectional pumping device being connected to the hydraulic oil pipe (35) and the sealing shell (251) through a pipeline, and a cylinder (32) being fixed to the lower end of the sealing shell (31). ), the telescopic end of the cylinder (32) passes through the sealed housing (31) and is fixed with a piston plate (33) that slides airtightly in the sealed housing (31); an end of the connecting housing (34) away from the sealed housing (31) is fixed with an adjustment housing (37); a plurality of baffles (38) are fixed in the adjustment housing (37); the baffles (38) divide the adjustment housing (37) into a plurality of sealed cavities; the sealed cavities are connected to the connecting housing (34); a piston rod (39) slides airtightly in the sealed cavities; an end of the piston rod (39) away from the sealed housing (31) passes through the adjustment housing (37) and is fixed with a tooth block (30); the tooth block (30) is compatible with a component in the limiting mechanism (4); A limiting mechanism (4) is fixed on the base (1); Controller body (5).

2. A diaphragm life test device according to claim 1, characterized in that: The impact assembly (27) comprises a sealing tube (271) fixed to the lower end of the rectangular shell (21), a fixing tube (272) is fixed in the sealing tube (271), a through hole (273) is provided in a circumferential array on the inner wall of the fixing tube (272), a lower pressure column (274) is slidably connected in the sealing tube (271), the lower pressure column (274) is rotatably connected to the lower end of the reciprocating plate (26), and a movable sleeve is fixed at the lower end of the lower pressure column (274). The movable sleeve (275) slides on the outer surface of the fixed tube (272), a pressing rod (276) is fixed to the inner top wall of the movable sleeve (275), an elastic member (277) is fixed between the movable sleeve (275) and the fixed tube (272), a sealing suction cup (278) made of soft material is fixed to the lower end of the sealing tube (271), and a rubber block (279) is fixed to the lower end of the pressing rod (276).

3. A diaphragm life test device according to claim 2, characterized in that: The sealing tube (271) is connected to a ventilation device via a pipeline.

4. A diaphragm life test device according to claim 1, characterized in that: The limiting mechanism (4) comprises a base (41) fixed on the base (1); the upper end of the base (41) is rotatably connected to a movable circular plate (42); a limiting shell (44) is fixed to the upper end of the base (41); a plane threaded disk (43) is fixed to the upper end of the movable circular plate (42); the plane threaded disk (43) is located in the limiting shell (44); a plurality of limiting blocks (45) meshing with the plane threaded disk (43) are provided above the limiting shell (44); a limiting plate (46) is fixed to the inner ends of the plurality of limiting blocks (45); a placement plate (47) is fixed to the middle part of the upper end of the base (41); a support shaft (48) is provided on one side of the base (41); a transmission gear three (49) rotatably mounted in a rectangular groove (20) is provided above the support shaft (48); the transmission gear three (49) is capable of meshing with the tooth block (30) after movement.

5. A diaphragm life test device according to claim 4, characterized in that: The movable circular plate (42) and the support shaft (48) are connected by belt transmission, and the support shaft (48) and the transmission gear three (49) are connected by a reversing assembly.

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