Diaphragm life test device

Abstract

The invention relates to the technical field of diaphragm tests, in particular to a diaphragm life test device which comprises a base, a rectangular groove is formed in the vertical end face of the base, a first telescopic rod is fixed to the transverse end face of the base, and a reciprocating impact mechanism is fixed to the telescopic end of the first telescopic rod. The reciprocating impact mechanism comprises a fixing frame fixed to one telescopic end of the telescopic rod, a rectangular shell is fixed to the end, away from the rectangular groove, of the fixing frame, a supporting block is arranged in the rectangular shell, and an adjusting assembly is fixed in the supporting block. The two-way pumping device can adjust the amount of hydraulic oil 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 placing plate, and the amount of hydraulic oil in the two cavities is inversely proportional, that is, the two-way pumping device can pump hydraulic oil into the hydraulic oil pipe according to the diameter of the diaphragm; and the device can be adjusted to a corresponding limiting range without being adjusted in sequence, so that the device is relatively convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of diaphragm testing, and in particular to a diaphragm life testing device. Background Art

[0002] As a key component, the diaphragm is widely used in many fields. In the pressure reducing valve, the diaphragm needs to deform to adjust the valve. The entire valve relies entirely on the diaphragm to cut off external leakage. Its life determines the stable operation time of the pressure reducing valve. At present, the industry often uses reciprocating impact to test the life of the diaphragm. For example, the life test device for diaphragm of diaphragm compressor disclosed in publication number CN115406781A can test the life of the diaphragm.

[0003] In order to ensure the accuracy of the test, the diaphragm needs to be limited by a limit device when it is subjected to reciprocating impact, so that the force point of the diaphragm will not be offset, affecting the test accuracy of the device on the diaphragm. The test devices of some small enterprises or scientific research institutions need to manually adjust the impact distance and limit range of the components, which makes the automation of the device low. It takes time to adjust the components before the test, making it more complicated to use. The limit range is detected by means of sensors, but the cost of the device is high and cannot be fully popularized. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a diaphragm life test device, which can effectively solve the problem of the prior art that the impact distance and the limit range of the components need to be adjusted sequentially.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a diaphragm life test device, comprising a base; A reciprocating impact mechanism, wherein a rectangular groove is formed on the vertical end surface of the base, a telescopic rod is fixed to the transverse end surface of the base, and the reciprocating impact mechanism comprises a fixing frame fixed to a telescopic end of the telescopic rod, a rectangular shell is fixed to one end of the fixing 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; A trigger mechanism, the trigger mechanism comprises a sealing shell fixed on a fixing frame, a connecting shell is fixed to one end of the sealing shell away from the telescopic rod 1, an arc-shaped hole is opened on the upper inner wall of the sealing shell and is connected to the connecting shell, a hydraulic oil pipe is passed through the connecting shell, a piston rod 2 is airtightly slid in the hydraulic oil pipe, a two-way pumping device is provided between the hydraulic oil pipe and the sealing shell, and the two-way pumping device is connected to the hydraulic oil pipe and the sealing shell through a pipeline; A limiting mechanism is fixed on the base; Controller body.

[0006] Preferably, the adjusting assembly includes a sealing shell fixed in the supporting block, a limiting hollow plate is fixed in the sealing shell, a piston rod member 1 is provided on the upper side of the limiting hollow plate, the piston rod member 1 slides airtightly in the sealing shell, a cam block is fixed to the upper end of the piston rod member 1, and hydraulic oil is filled above the piston rod 2 in the hydraulic oil pipe and below the limiting hollow plate in the sealing shell.

[0007] Preferably, a cylinder is fixed to the lower end of the sealing shell, the telescopic end of the cylinder penetrates the sealing shell and is fixed with a piston plate that slides airtightly in the sealing shell, an adjusting shell is fixed to the end of the connecting shell away from the sealing shell, a plurality of baffles are fixed in the adjusting shell, the baffles divide the adjusting shell into a plurality of sealing chambers, the sealing chambers are connected with the connecting shell, a piston rod member 2 slides airtightly in the sealing chamber, the end of the piston rod member 2 away from the sealing shell penetrates the adjusting shell and is fixed with a tooth block, the tooth block is adapted to the components in the limiting mechanism.

[0008] Preferably, a driven transmission gear 1 is rotatably connected in the rectangular shell, a transmission gear 2 is meshed on one side of the transmission gear 1, the support block is fixedly connected to the transmission gear 2, 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 to an impact assembly, and the number of teeth of the transmission gear 1 is less than the number of teeth of the transmission gear 2.

[0009] Preferably, the impact assembly includes a sealing tube fixed to the lower end of the rectangular shell, a fixed tube is fixed inside the sealing tube, a through hole is opened in a circumferential array on the inner wall of the fixed tube, a down-pressure column is slidably connected inside the sealing tube, the down-pressure column is rotatably connected to the lower end of the reciprocating plate, a movable sleeve is fixed to the lower end of the down-pressure column, the movable sleeve slides on the outer surface of the fixed tube, a down-pressure rod is fixed to the inner top wall of the movable sleeve, an elastic part is fixed between the movable sleeve and the fixed tube, a sealing suction cup made of soft material is fixed to the lower end of the sealing tube, and a rubber block is fixed to the lower end of the down-pressure rod.

[0010] Preferably, the sealing tube is connected to a ventilation device via a pipeline.

[0011] Preferably, the limiting mechanism includes a base fixed on the base, the upper end of the base is rotatably connected to a movable circular plate, the upper end of the base is fixed with a limiting shell, the upper end of the movable circular plate is fixed with a plane threaded disk, the plane threaded disk is located in the limiting shell, a plurality of limiting blocks meshing with the plane threaded disk are provided above the limiting shell, a limiting plate is fixed at the inner ends of the plurality of limiting blocks, a placing plate is fixed to the middle part of the upper end of the base, a support shaft is provided on one side of the base, a transmission gear three rotatably installed in a rectangular groove is provided above the support shaft, and the transmission gear three can mesh with the moved tooth block.

[0012] Preferably, the movable 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 reversing assembly.

[0013] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: The amount of hydraulic oil in the sealing shell and the hydraulic oil pipe is adjusted by setting a two-way pumping device. The moving distance of the rubber block is inversely proportional to the moving distance of the placement plate, and the amount of hydraulic oil in the sealing shell and the hydraulic oil pipe is adjusted inversely. 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 limit mechanism is adjusted to a suitable limit range. There is no need to adjust the reciprocating impact mechanism and the limit mechanism in turn, so that the device is more convenient to use and has a higher degree of automation.

[0014] During the test, the sealing tube and the fixed tube will switch back and forth between the airtight connection state and the airtight blocking state. Without affecting the test, the air in the sealing tube will enter the fixed tube through the through hole and finally flow to the surface of the diaphragm, which not only cools it but also prevents the diaphragm from being adsorbed on the surface of the rubber block and moving upward, ensuring the accuracy of the device during the test.

[0015] The limit plate can limit the diaphragm to ensure that the force point of the diaphragm will not be offset during the test and will not hinder the deformation of the diaphragm during the test, so that the device has a better test effect, and the limit range can be adaptively adjusted according to the moving distance of the rubber block, so that the device has better adaptability and can test diaphragms of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 It is a schematic diagram of part of the internal structure of the present invention; Figure 4 It is a schematic diagram of the internal structure of the reciprocating impact mechanism of the present invention; Figure 5 It is a schematic diagram of the internal structure of the regulating component of the present invention; Figure 6 It is a schematic diagram of the internal structure of the impact assembly of the present invention; Figure 7 It is a schematic diagram of the internal structure of the trigger mechanism of the present invention; Figure 8 for Figure 7 A in the enlarged view; Fig. 9 It is a schematic diagram of the position structure of the limiting mechanism of the present invention.

[0018] Figure numerals: 1, base; 2, reciprocating impact mechanism; 3, trigger mechanism; 4, limit mechanism; 5, controller body; 20, rectangular groove; 21, rectangular shell; 22, transmission gear 1; 23, transmission gear 2; 24, support block; 25, adjustment assembly; 26, reciprocating plate; 27, impact assembly; 28, fixed frame; 29, telescopic rod 1; 251, sealing shell; 252, limit hollow plate; 253, piston rod member 1; 254, cam block; 271, sealing tube; 272, fixing tube; 273, through hole; 274, lower pressure column; 275. movable sleeve; 276. lower pressure rod; 277. elastic member; 278. sealing suction cup; 279. rubber block; 30. tooth block; 31. sealing housing; 32. cylinder; 33. piston plate one; 34. connecting housing; 35. hydraulic oil pipe; 36. piston rod two; 37. adjusting housing; 38. baffle; 39. piston rod part two; 41. base; 42. movable circular plate; 43. flat threaded disk; 44. limit housing; 45. limit block; 46. limit plate; 47. placement plate; 48. support shaft; 49. transmission gear three. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] Example: Refer to Figures 1 to 9 A diaphragm life test device comprises a base 1, a rectangular groove 20 is formed on the vertical end surface of the base 1, a telescopic rod 29 is fixed to the transverse end surface of the base 1, a reciprocating impact mechanism 2 fixed to the telescopic end of the telescopic rod 29, a trigger mechanism 3 fixed to a fixing frame 28, a limit mechanism 4 fixed to the base 1, and a controller body 5; It should be noted that before conducting the test, the diaphragm is first limited in the limiting mechanism 4 to ensure that the force point of the diaphragm caused by the impact components in the reciprocating impact mechanism 2 will not be offset during the test, thereby ensuring the test effect of the device. The surface of the diaphragm is impacted by the reciprocating movement of the components in the reciprocating impact mechanism 2, and finally the service life of the diaphragm is tested. Directly using equipment such as electric cylinders to reciprocately impact the surface of the diaphragm will cause great loss to the electric cylinder, while the cooperation of the mechanical mechanism in the reciprocating impact mechanism 2 can greatly reduce the degree of loss of mechanical components during the reciprocating impact process. All electrical equipment in the device can be controlled by the controller body 5 until the diaphragm is impacted to the point where it cannot 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 unusability of the diaphragm adopt mature detection and control technologies, so they are not elaborated here. The diaphragm used for the test of this device is a metal diaphragm.

[0022] Further explanation, in order to better drive the components to move back and forth, the following settings are made, such as Figure 4 As shown, the reciprocating impact mechanism 2 includes a fixing frame 28 fixed to the telescopic end of the telescopic rod 1 29, a rectangular shell 21 is fixed to one end of the fixing frame 28 away from the rectangular slot 20, a support block 24 is provided in the rectangular shell 21, an adjustment assembly 25 is fixed in the support block 24, a driven transmission gear 1 22 is rotatably connected in the rectangular shell 21, a transmission gear 2 23 is meshed on one side of the transmission gear 1 22, the number of teeth of the transmission gear 1 22 is less than the number of teeth of the transmission gear 2 23, through the transmission between the two, the torque of the transmission gear 2 23 can be increased, so that the transmission gear 2 23 has better stability, and at the same time, there is no need to deliberately let the motor rotate at a low speed, so that the motor can operate normally, the support block 24 is fixedly connected to the transmission gear 2 23, and a reciprocating plate 26 is elastically hinged in the rectangular shell 21; Then, the reciprocating plate 26 is located below the support block 24 and fits against its outer side surface. 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 reciprocating plate 26 rotating downward to reset. The lower end of the reciprocating plate 26 is rotatably connected to the impact assembly 27. The bidirectional pumping device is fixed between the fixing frame 28 and the rectangular shell 21. Specifically, the motor will drive the transmission gear 1 22 and the transmission gear 2 23 to rotate simultaneously, and the support block 24 and the adjustment assembly 25 will rotate simultaneously with the transmission gear 2 23. When the adjustment assembly 25 contacts the reciprocating plate 26, it will push the reciprocating plate 26 to rotate downward. After the adjustment 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 back and forth up and down.

[0023] Further explanation, in order to adjust the reciprocating distance of the components in the device, the following settings are made, such as Figure 5 As shown, the adjustment component 25 includes 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 253 is provided on the upper side of the limiting hollow plate 252, the piston rod 253 slides airtightly in the sealing shell 251, a cam block 254 is fixed on the upper end of the piston rod 253, and the position of the cam block 254 is adjusted by the amount of hydraulic oil 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.

[0024] Further explanation, in order to better perform the impact test on the diaphragm, the following settings are made, such as Figure 6 As 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 by a pipeline, a fixed tube 272 is fixed in the sealing tube 271, and a through hole 273 is opened in a circumferential array on the inner wall of the fixed tube 272, a lower pressure column 274 is slidably connected in the sealing tube 271, and the lower pressure column 274 is rotatably connected to the lower end of the reciprocating plate 26, and a movable sleeve 275 is fixed to the lower end of the lower pressure column 274. When the movable sleeve 275 moves downward, the movable sleeve 275 will seal the through hole 273 in an airtight manner, so that the air in the sealing tube 271 cannot enter the fixed tube 272, so that 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 airtightly connected, and 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, and an elastic member 277 is fixed between the movable sleeve 275 and the fixed tube 272. Then, a sealing suction cup 278 made of soft material is fixed at the lower end of the sealing tube 271. The sealing suction cup 278 is made of soft material. A rubber block 279 is fixed at the lower end of the lower pressure 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 back and forth and then recover. Due to the characteristics of metal, the diaphragm will generate a certain amount of heat during the reciprocating bending process. The ventilation device can allow air to flow to the surface of the diaphragm to reduce the temperature of the diaphragm surface. Specifically, the pressure column 274 and the movable sleeve 275 will reciprocate up and down with the reciprocating plate 26, so that the pressure rod 276 and the rubber block 279 continuously impact the surface of the diaphragm for life testing. 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 hole 273, and finally flows to the surface of the diaphragm, which can not only cool it but also prevent the diaphragm from being adsorbed 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 larger the arc of the raised surface. By limiting the reciprocating 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 to be deformed and unable to recover.

[0025] Further explanation, in order to adjust the limiting range of the limiting mechanism 4 on the diaphragm, the following settings are performed, such as Figure 7 and Figure 8 As shown, the trigger mechanism 3 includes a sealed housing 31 fixed on the fixing frame 28, the sealed housing 31 is filled with hydraulic oil, a cylinder 32 is fixed at the lower end of the sealed housing 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, a connecting housing 34 is fixed at one end of the sealed housing 31 away from the telescopic rod 29, an arc-shaped hole is opened on the upper inner wall of the sealed housing 31 and is connected to the connecting housing 34, a hydraulic oil pipe 35 passes through the connecting housing 34, and a piston rod 36 slides airtightly in the hydraulic oil pipe 35; Then, an adjusting shell 37 is fixed to the end of the connecting shell 34 away from the sealing shell 31, and a plurality of baffles 38 are fixed in the adjusting shell 37. The baffles 38 divide the adjusting shell 37 into a plurality of sealing chambers. The sealing chambers are connected to the connecting shell 34 through the holes opened therein. The piston rod 36 is located between the two sealing chambers, which will hermetically block the sealing chamber away from the side of the adjusting component 25. The hydraulic oil in the sealing shell 31 and the connecting shell 34 cannot enter the sealing chamber. A piston rod 39 is airtightly slid in the sealing chamber. The end of the piston rod 39 away from the sealing shell 31 passes through the adjusting shell 37 and is fixed with a tooth block 30. The tooth block 30 is adapted to the components in the limiting mechanism 4.

[0026] Then, a two-way pumping device is provided between the hydraulic oil pipe 35 and the sealing shell 251. The two-way pumping device is connected to the hydraulic oil pipe 35 and the sealing shell 251 through a pipeline. 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.

[0027] The amount of hydraulic oil in the sealing shell 251 is proportional to the diameter of the diaphragm, and the amount of hydraulic oil in the hydraulic oil pipe 35 is inversely proportional to the diameter of the diaphragm. The position of the piston rod 36 can be controlled by the amount of hydraulic oil in the hydraulic oil pipe 35. Only when the piston rod 36 moves to one side of the piston rod member 39 can the airtight blockage between the sealing chamber and the communicating shell 34 be released. That is to say, after the hydraulic oil enters the hydraulic oil pipe 35, it will push the piston rod 2 36 to move. At this time, the cylinder 32 is started to push the piston plate 1 33 to move in the sealed shell 31. During the movement, the piston plate 1 33 will push the hydraulic oil in the sealed shell 31 to flow into the connecting shell 34, and then enter the sealed cavity, but it can only flow to the sealed cavity that is not hermetically blocked by the piston rod 2 36. The hydraulic oil entering the sealed cavity will push the piston rod 2 39 and the tooth block 30 therein to move at the same time, until the cylinder 32 therein can no longer push the hydraulic oil to flow, the tooth block 30 will move to a position where it can maintain meshing with the transmission gear 3 49, and the cylinder 32 can be stopped from driving the piston plate 1 33 to move, so that the tooth block 30 can maintain meshing with the transmission gear 3 49 during the subsequent downward movement.

[0028] To further explain, in order to limit the diaphragm to be tested, the following settings are made, such as Fig. 9 As shown, the limiting mechanism 4 includes a base 41 fixed on the base 1, the upper end of the base 41 is rotatably connected to a movable circular plate 42, the upper end of the base 41 is fixed to a limiting housing 44, the upper end of the movable circular plate 42 is fixed to a plane threaded disk 43, the plane threaded disk 43 is located in the limiting housing 44, and a plurality of limiting blocks 45 meshing with the plane threaded disk 43 are arranged above the limiting housing 44, the plane threaded disk 43, the limiting housing 44 and the limiting blocks 45 form a three-jaw chuck, and when the plane threaded disk 43 rotates, the plurality of limiting blocks 45 will move in opposite directions When the fixing frame 28 moves downward, the plurality of limit blocks 45 will move toward each other, and when the fixing frame 28 moves upward, the plurality of limit blocks 45 will move toward each other. It should be noted that the distance between the point cloud of the plane threaded disk 43 in a certain direction along the shape trajectory and the axis of the plane threaded disk 43 gradually increases or decreases, which makes a small distance difference between the limit block 45 and the axis of the plane threaded disk 43, which can be compensated by setting the length of the limit block 45 so that the plurality of limit blocks 45 can be synchronously gathered to clamp or dispersed to release the diaphragm; Then, a limiting plate 46 is fixed to one end of the plurality of limit blocks 45 close to each other, a placing 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 3 49 rotatably installed in the rectangular groove 20 is provided above the support shaft 48, the transmission gear 3 49 can mesh with the tooth block 30 after the movement, the movable circular plate 42 and the support shaft 48 are connected by belt transmission, the support shaft 48 and the transmission gear 3 49 are connected by a reversing assembly, the reversing assembly is composed of two shaft bodies and a bevel gear, so that the transmission gear 3 49 can drive the support shaft 48 to rotate; Specifically, the rotating transmission gear three 49 will drive the support shaft 48 and the movable circular plate 42 to rotate at the same time, and the limit shell 44 will rotate with the movable circular plate 42. Under the limiting effect of the flat threaded disk 43 on the two limit blocks 45, the limit shell 44 will drive the multiple limit blocks 45 to move toward each other during the rotation process, and the multiple limit plates 46 will also move toward each other along with the limit blocks 45, so as to limit the diaphragm placed on the placement plate 47.

[0029] The working principle of the present invention is as follows: after the diaphragm is placed on the placement plate 47, the bidirectional pumping device is controlled by the controller body 5 to start according to the diameter of the diaphragm. The smaller the diameter of the diaphragm, the less the amount of hydraulic oil in the sealing shell 251, so as to prevent the rubber block 279 from moving a long distance and directly impacting the diaphragm to deform and unable to recover. Since the amount of hydraulic oil is constant, when the amount of hydraulic oil in the sealing shell 251 decreases, the amount of hydraulic oil in the hydraulic oil pipe 35 will increase, so that the tooth block 30 can better drive the multiple limit plates 46 to limit the diaphragm (the specific description here is as follows), that is, the amount of hydraulic oil in the sealing shell 251 is proportional to the diameter of the diaphragm, and the amount of hydraulic oil in the hydraulic oil pipe 35 is inversely proportional to the diameter of the diaphragm. After the amount of lubricating oil in the sealing shell 251 and the hydraulic oil pipe 35 is adjusted by the bidirectional pumping device, the diaphragm can be tested; After the hydraulic oil extracted from the sealing shell 251 by the two-way pumping device enters the hydraulic oil pipe 35, the impact force generated by the flow of hydraulic oil will push the piston rod 2 36 to move. At this time, the cylinder 32 is started to push the piston plate 1 33 to move upward in the sealing shell 31. During the movement, the piston plate 1 33 will push the hydraulic oil in the sealing shell 31 to flow into the connecting shell 34, and then enter the sealing cavity, but it can only flow to the sealing cavity that is not hermetically blocked by the piston rod 2 36. The hydraulic oil entering the sealing cavity will push the piston rod 2 39 and the tooth block 30 therein to move at the same time, so that the tooth block 30 can maintain a meshing state with the transmission gear 3 49 during the subsequent downward movement. Then the telescopic rod 1 29 is started to drive the fixed frame 28 to move downward, the sealing shell 31 and the moved tooth block 30 will move downward with the fixed frame 28, and the tooth block 30 will drive the transmission gear 3 49 to rotate during the downward movement; The rotating transmission gear 3 49 will drive the support shaft 48 and the movable circular plate 42 to rotate at the same time, and the limit housing 44 will rotate with the movable circular plate 42. Under the limiting effect of the plane threaded disk 43 on the two limit blocks 45, during the rotation of the limit housing 44, the plurality of limit blocks 45 will be driven to move in a direction close to each other, and the plurality of limit plates 46 will also move in a direction close to each other along with the limit blocks 45, so as to limit the diaphragm placed on the placement plate 47, so that the diaphragm is always kept in the center to ensure that the force point of the diaphragm will not be offset during the test, so that the device has a better test effect; According to the size limit of the diaphragm, when the sealing suction cup 278 moves to the diaphragm, the telescopic rod 29 can be stopped so that it will no longer shorten, and finally the motor and the ventilation device are started. The motor will drive the transmission gear 1 22 and the transmission gear 2 23 to rotate at the same time, and the support block 24 and the adjustment component 25 will rotate with the transmission gear 2 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, so that the reciprocating plate 26 can drive the components in the impact component 27 to move up and down reciprocatingly. The position of the cam block 254 is adjusted by the amount of hydraulic oil in the sealing shell 251. The farther the cam block 254 is from the support block 24, the higher the angle of the reciprocating plate 26 to rotate downward. The larger the diameter of the diaphragm, the smaller the angle of rotation of the reciprocating plate 26 should be, so as to prevent the components in the impact component 27 from directly impacting the diaphragm to deformation and unable to recover. The down-pressure column 274 and the movable sleeve 275 will reciprocate up and down with the reciprocating plate 26, so that the down-pressure rod 276 and the rubber block 279 will continuously impact the surface of the diaphragm to perform a life test. When the movable sleeve 275 and the rubber block 279 reciprocate up and down, the ventilation device will inject air into the sealing tube 271 through the pipe. 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, which can not only cool it, but also prevent the diaphragm from being adsorbed on the surface of the rubber block 279 and moving upward, thereby ensuring the accuracy of the device during testing.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, 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 a vertical end surface of the base (1), and a telescopic rod (29) is fixed to a transverse end surface of the base (1); the reciprocating impact mechanism (2) comprises a fixing frame (28) fixed to the telescopic end of the telescopic rod (29), a rectangular shell (21) is fixed to an end of the fixing frame (28) away from the rectangular groove (20), a support block (24) is provided in the rectangular shell (21), and an adjustment component (25) is fixed in the support block (24); A trigger mechanism (3), the trigger mechanism (3) comprising 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) passing through the connecting shell (34), a second piston rod (36) sliding in an airtight manner 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; 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 adjustment assembly (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).

3. A diaphragm life test device according to claim 1, characterized in that: A cylinder (32) is fixed at the lower end of the sealing shell (31); the telescopic end of the cylinder (32) penetrates the sealing shell (31) and is fixed with a piston plate (33) that slides airtightly in the sealing shell (31); an adjusting shell (37) is fixed at one end of the connecting shell (34) away from the sealing shell (31); a plurality of baffles (38) are fixed in the adjusting shell (37); the baffles (38) divide the adjusting shell (37) into a plurality of sealing chambers; the sealing chambers are connected to the connecting shell (34); a piston rod (39) slides airtightly in the sealing chamber; the piston rod (39) penetrates the adjusting shell (37) at one end away from the sealing shell (31) and is fixed with a tooth block (30); the tooth block (30) is compatible with a component in the limiting mechanism (4).

4. A diaphragm life test device according to claim 1, characterized in that: A driven transmission gear 1 (22) is rotatably connected inside the rectangular shell (21), a transmission gear 2 (23) is meshed on one side of the transmission gear 1 (22), the support block (24) is fixedly connected to the transmission gear 2 (23), a reciprocating plate (26) is elastically hinged inside 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, an impact assembly (27) is rotatably connected to the lower end of the reciprocating plate (26), and the number of teeth of the transmission gear 1 (22) is less than the number of teeth of the transmission gear 2 (23).

5. A diaphragm life test device according to claim 4, 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).

6. A diaphragm life test device according to claim 5, characterized in that: The sealing tube (271) is connected to a ventilation device via a pipeline.

7. 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.

8. A diaphragm life test device according to claim 7, 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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