Performance detection equipment for diaphragm material of diaphragm pump

Abstract

The invention discloses diaphragm pump diaphragm material performance detection equipment, and belongs to the technical field of diaphragm detection, the diaphragm pump diaphragm material performance detection equipment comprises a test board for detecting two diaphragm components and two simulation detection boxes, the top end of the test board is connected with a reciprocating driving mechanism through a mounting seat, and the reciprocating driving mechanism is connected with two symmetrically arranged glands through push rods; a stress concentration cylinder is arranged outside the push rod. Through the arrangement of the amplification assembly, electromagnetic repulsive force can be utilized to trigger instant injection of high-pressure gas, directional air pressure stress is applied to microcracks of the diaphragm in an ultimate tensile state, invisible cracks are expanded to be in detectable sizes through the stress concentration effect of the tip of the cracks, and the detection reliability is improved; the elastic recovery capability of the diaphragm can be detected and the permanent deformation can be quantified by utilizing the circular scanning of the correlation photoelectric sensor, and the compactness of the diaphragm material can be tested and the bubble or layering defect can be identified by utilizing the negative pressure expansion detection.

Description

Technical Field

[0001] This invention relates to the field of diaphragm testing technology, and in particular to a device for testing the performance of diaphragm materials in diaphragm pumps. Background Technology

[0002] A diaphragm pump is a widely used conveying device. It is a positive displacement pump that uses compressed air to drive and conveys fluids through the reciprocating motion of a flexible diaphragm.

[0003] When a diaphragm pump reaches its limit, the diaphragm is stretched to its limit. If there are microcracks in the diaphragm at this limit, the diaphragm will shrink during the return stroke, causing the microcracks to heal. However, prolonged exposure of the diaphragm to this limit stretching state can significantly damage its performance, making these microcracks difficult to detect. Furthermore, if the inlet or outlet of the diaphragm pump becomes blocked during operation, the monitoring feedback on the flow rate and pressure within the pump will lag, causing the diaphragm to continue operating in this state for a period of time. During this state, the pressure changes on the diaphragm are complex and can adversely affect its performance. Therefore, a diaphragm pump diaphragm material performance testing device is proposed. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a diaphragm pump diaphragm material performance testing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A diaphragm pump diaphragm material performance testing device includes a test bench for testing two diaphragm components and two simulated test chambers. A reciprocating drive mechanism is connected to the top of the test bench via a mounting base. The reciprocating drive mechanism is connected to two symmetrically arranged pressure caps via push rods. A stress concentration cylinder is provided on the outer side of the push rod. An amplification chamber is connected to the outer wall of the stress concentration cylinder. An amplification component is provided in the amplification chamber. A mounting ring is provided on the outer side of the pressure cap. Two strain detection mounting rings are connected to the inner wall of the mounting rings. A deformation detection component is provided inside the strain detection mounting rings. The simulation testing chamber is equipped with two guide rails, on which crack detection components are mounted. A steering seat is suspended inside the simulation testing chamber, and a vacuum pump is fixedly connected to the steering seat via a fixing rod. The vacuum pump is connected to a pressure plate, on which a simulation component is mounted. A simulation airbag is mounted outside the simulation component, and a closed ring is connected to the outer wall of the pressure plate.

[0006] Preferably, the pressure cap is fixedly assembled with the diaphragm component, the reciprocating drive mechanism is fixedly connected to two sets of symmetrically arranged adjusting magnetic blocks via push rods, and the push rods are slidably connected to the stress concentration cylinder.

[0007] Preferably, the amplification assembly includes an amplification telescopic rod fixed to the inner end face of the amplification chamber, an electromagnetic amplification block is fixedly connected to the bottom end of the amplification telescopic rod, an amplification opening adapted to the electromagnetic amplification block is opened on the stress concentration cylinder, and a miniature air pump is installed in the amplification chamber.

[0008] Preferably, an annular detection light strip is fixedly connected to the inner wall of the stress concentration cylinder, the annular detection light strip is slidably connected to the push rod, the stress concentration cylinder is fixedly installed to the mounting base, and the stress concentration cylinder is fixedly connected to the mounting ring through a storage cover.

[0009] Preferably, the deformation detection assembly includes a through-beam photoelectric sensor, an electrically controlled guide groove is provided on the inner wall of the strain detection mounting ring, the inner wall of the electrically controlled guide groove is slidably connected to the through-beam photoelectric sensor, and the mounting ring is fixedly connected to the simulation detection box.

[0010] Preferably, the simulation test box located at the mounting ring has a test port, the simulation test box is fixedly connected to the test bench, and the inner sidewall of the simulation test box is fixedly connected to the guide rail.

[0011] Preferably, the crack detection component consists of multiple sets of light intensity sensing rings, which are spliced ​​from the inside out and arranged in a circular shape. The multiple sets of light intensity sensing rings are slidably connected to the guide rail via guide sliders.

[0012] Preferably, the simulation test box is rotatably connected to the vacuum pump via a steering seat, the vacuum pump is connected to a closed ring, and the closed ring is equipped with multiple sets of control valves at one end of the mounting ring.

[0013] Preferably, the simulation component includes multiple hydraulic push rods disposed within the simulated airbag, and the pressure plate located at one end of the mounting ring is connected to multiple mechanical stress simulation pressure plates via the multiple hydraulic push rods, and the multiple mechanical stress simulation pressure plates are arranged in a ring array from the inside out.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This solution, through the setting of the amplification component, can use electromagnetic repulsion to trigger the instantaneous injection of high-pressure gas, apply directional gas pressure stress to the microcracks in the diaphragm under ultimate tensile state, and through the stress concentration effect at the crack tip, cause the hidden crack to expand to a detectable size, thereby improving the reliability of detection.

[0015] 2. This solution, through the setting of deformation detection components, can use a through-beam photoelectric sensor to scan the circumference, detect the elastic recovery ability of the diaphragm, quantify the amount of permanent deformation, and use negative pressure expansion detection to test the density of the diaphragm material and identify defects such as bubbles or delamination.

[0016] 3. This solution, through the setting of the crack detection component, can utilize a coaxial ring light source in conjunction with a multi-channel light intensity sensing ring. Based on the principle of abrupt change in the light transmittance of the film surface at the crack location, it can quickly locate defects, making the detection more efficient. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a diaphragm pump diaphragm material performance testing device proposed in this invention; Figure 2 This is an assembly drawing of a diaphragm pump diaphragm material performance testing device proposed in this invention; Figure 3 This is a schematic diagram of the adjusting magnetic block in a diaphragm pump diaphragm material performance testing device proposed in this invention; Figure 4 This is a schematic diagram of the deformation detection component in a diaphragm pump diaphragm material performance testing device proposed in this invention; Figure 5 This is a schematic diagram of the magnified component in a diaphragm pump diaphragm material performance testing device proposed in this invention; Figure 6 This is a schematic diagram of the internal structure of the simulated testing chamber in a diaphragm pump diaphragm material performance testing device proposed in this invention; Figure 7 This is a schematic diagram of the internal structure of a simulated airbag in a diaphragm pump diaphragm material performance testing device proposed in this invention; Figure 8 This is a schematic diagram of the crack detection component in a diaphragm pump diaphragm material performance testing device proposed in this invention.

[0018] In the diagram: 1. Test bench; 2. Simulated test chamber; 3. Diaphragm component; 4. Reciprocating drive mechanism; 5. Pressure cap; 6. Adjustment magnetic block; 7. Stress concentration cylinder; 8. Annular detection light strip; 9. Amplification chamber; 10. Miniature air pump; 11. Amplification telescopic rod; 12. Electromagnetic amplification block; 13. Storage cover; 14. Mounting ring; 15. Strain detection mounting ring; 16. Through-beam photoelectric sensor; 17. Guide rail; 18. Guide slider; 19. Light intensity sensing ring; 20. Steering seat; 21. Vacuum pump; 22. Pressure plate; 23. Hydraulic push rod; 24. Mechanical stress simulation pressure plate; 25. Closed ring; 26. Control valve; 27. Simulated airbag. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] Example, refer to Figures 1 to 8 A diaphragm pump diaphragm material performance testing device includes a test bench 1 for testing two diaphragm components 3 and two simulation test boxes 2. The top of the test bench 1 is connected to a reciprocating drive mechanism 4 via a mounting base. The reciprocating drive mechanism 4 is connected to two symmetrically arranged pressure caps 5 via push rods. A stress concentration cylinder 7 is provided on the outside of the push rods. An amplification chamber 9 is connected to the outer wall of the stress concentration cylinder 7. An amplification component is provided inside the amplification chamber 9. Furthermore, the pressure cap 5 is fixedly assembled with the diaphragm component 3, the reciprocating drive mechanism 4 is fixedly connected to two sets of symmetrically arranged adjusting magnetic blocks 6 via push rods, the push rods are slidably connected to the stress concentration cylinder 7, the amplification assembly includes an amplification telescopic rod 11 fixed to the inner end face of the amplification chamber 9, an electromagnetic amplification block 12 is fixedly connected to the bottom end of the amplification telescopic rod 11, the stress concentration cylinder 7 has an amplification opening adapted to the electromagnetic amplification block 12, the amplification chamber 9 is equipped with a micro air pump 10, an annular detection light strip 8 is fixedly connected to the inner side wall of the stress concentration cylinder 7, the annular detection light strip 8 is slidably connected to the push rods, the stress concentration cylinder 7 is fixedly installed with the mounting base, and the stress concentration cylinder 7 is fixedly connected to the mounting ring 14 via a storage cover 13; It should be noted that: the diaphragm component 3 to be tested is installed in the mounting ring 14, and the pressure cap 5 is fixedly installed to the diaphragm component 3. The diaphragm component 3 is compressed and stretched by the operation of the reciprocating drive mechanism 4. When the diaphragm component 3 is subjected to the ultimate tensile test, the electromagnetic amplification block 12 is energized. Before the diaphragm component 3 is stretched to the limit state, the adjusting magnetic block 6 on the push rod will generate a magnetic repulsion force with the energized electromagnetic amplification block 12, causing the electromagnetic amplification block 12 to compress the amplification telescopic rod 11, thereby opening the amplification port on the stress concentration cylinder 7. This allows the high-pressure gas stored in the amplification chamber 9 to enter the stress concentration cylinder 7 instantaneously, which will cause the micro-cracks in the diaphragm component 3 under the ultimate tensile state to be affected. The sudden increase in air pressure causes the micro-cracks to be stretched under pressure, making them thinner and thus amplifying the micro-cracks in each area. After the test is completed, high-pressure gas is re-injected into the amplification chamber 9 by the micro air pump 10 for the next test. At the same time, the annular detection light strip 8 is activated to form a uniform annular detection light. The light then passes through the stretched diaphragm component 3. Since the diaphragm component 3 is pushed and pulled at the axis, the light intensity of the diaphragm component 3 in the same annular area will be consistent. If the light intensity sensed by the same light intensity sensing ring 19 is inconsistent at different positions, it indicates that there are micro-cracks in the diaphragm component 3 at the limit of its stroke. The advantages mentioned above are as follows: This allows for the use of instantaneous high pressure to compress the minute cracks in the diaphragm component 3 when it reaches its ultimate tensile state, enabling the minute crack defects in the diaphragm component 3 to be magnified and detected, thereby improving the overall detection efficiency and accuracy. An installation ring 14 is provided on the outer side of the pressure cap 5. Two strain detection mounting rings 15 are connected to the inner side wall of the installation ring 14. A deformation detection component is provided inside the strain detection mounting ring 15. Furthermore, the deformation detection assembly includes a through-beam photoelectric sensor 16, an electrically controlled guide groove is provided on the inner wall of the strain detection mounting ring 15, the inner wall of the electrically controlled guide groove is slidably connected to the through-beam photoelectric sensor 16, and the mounting ring 14 is fixedly connected to the simulation detection box 2. It should be noted that after the diaphragm component 3 has undergone various operating states, if the through-beam photoelectric sensor 16 is controlled to slide in the guide groove of the strain detection mounting ring 15, the through-beam photoelectric sensor 16 will move in a circular motion toward the axis of the diaphragm component 3. The advantages mentioned above are: this makes it easier to check whether the diaphragm component 3 will undergo deformation that cannot be elastically recovered after stretching and deformation during each inspection shutdown stage, thus ensuring the reliable use of the diaphragm component 3. The simulation testing box 2 is equipped with two guide rails 17, and a crack detection component is installed on the guide rails 17. A steering seat 20 is hoisted inside the simulation testing box 2. A vacuum pump 21 is fixedly connected to the steering seat 20 through a fixing rod. The vacuum pump 21 is connected to a pressure plate 22. A simulation component is installed on the pressure plate 22. A simulation airbag 27 is installed outside the simulation component. A closed ring 25 is connected to the outer wall of the pressure plate 22.

[0023] Furthermore, a detection port is provided on the side wall of the simulation detection box 2 located at the mounting ring 14. The simulation detection box 2 is fixedly connected to the test bench 1. The inner side wall of the simulation detection box 2 is fixedly connected to the guide slide rail 17. The crack detection component consists of multiple sets of light intensity sensing rings 19. The multiple sets of light intensity sensing rings 19 are spliced ​​from the inside out and are arranged in a circular shape. The multiple sets of light intensity sensing rings 19 are slidably connected to the guide slide rail 17 through the guide slider 18. The simulation detection box 2 is rotatably connected to the vacuum pump 21 through the steering seat 20. The vacuum pump 21 is connected to the closed ring 25. The closed ring 25 is equipped with multiple sets of control valves 26 at one end of the mounting ring 14. The simulation component includes multiple hydraulic push rods 23 set in the simulation airbag 27. The pressure plate 22 is located at one end of the mounting ring 14 and is connected to multiple mechanical stress simulation pressure plates 24 through multiple hydraulic push rods 23. The multiple mechanical stress simulation pressure plates 24 are arranged in a ring array from the inside out.

[0024] It should be noted that: the steering seat 20 can drive the vacuum pump 21 and the pressure plate 22 to rotate downwards, causing the sealing ring 25 to press against the detection port of the simulation test chamber 2. Subsequently, the reciprocating drive mechanism 4 will drive the diaphragm component 3 to continuously reciprocate and stretch, and the diaphragm component 3 will apply force to the simulated airbag 27. The multiple sets of mechanical stress simulation pressure plates 24 inside the simulated airbag 27 will adjust the pushing displacement of different hydraulic push rods 23 according to the actual use of the diaphragm pump. When simulating a diaphragm pump failure, different parts of the diaphragm component 3 will be subjected to different degrees of pressure. During the subsequent continuous testing process, Vacuum pump 21 opens control valve 26 on sealing ring 25, and then uses vacuum pump 21 to perform negative pressure operation on the sealed space where diaphragm component 3 is located. If air bubbles or non-density appear inside diaphragm component 3 during production or after multiple stretch tests, the continuous negative pressure state outside will cause the air pressure in the air bubble or non-density area inside to be greater than the air pressure outside. The internal air pressure gradually pushes outward, causing diaphragm component 3 to expand continuously, and then be identified and detected by photoelectric sensor 16 on strain detection mounting ring 15, making the physical performance detection of diaphragm more comprehensive. In use, the diaphragm component 3 to be tested is installed in the mounting ring 14, and the pressure cap 5 is fixedly installed to the diaphragm component 3. The diaphragm component 3 is compressed and stretched by the operation of the reciprocating drive mechanism 4. When the diaphragm component 3 is subjected to extreme tensile testing, the electromagnetic amplification block 12 is energized. Before the diaphragm component 3 is stretched to its limit, the adjusting magnetic block 6 on the push rod will generate a magnetic repulsion force with the energized electromagnetic amplification block 12, causing the electromagnetic amplification block 12 to compress the amplification telescopic rod 11, thereby opening the amplification port on the stress concentration cylinder 7. This allows the high-pressure gas stored in the amplification chamber 9 to instantly enter the stress concentration cylinder 7. This causes the microcracks in the diaphragm component 3 under extreme tensile conditions to be affected by the sudden increase in gas pressure, thus applying pressure and stretching treatment to the microcracks, causing the microcracks to become thinner under tension. This leads to the magnification of minute cracks in each area. After the inspection is completed, high-pressure gas is re-injected into the magnification chamber 9 by the micro air pump 10 to facilitate the next inspection. At the same time, the annular detection light strip 8 is activated to form a uniform annular detection light. The light then passes through the diaphragm component 3 in a stretched state. Since the diaphragm component 3 is pushed and pulled at the axis, the light intensity of the diaphragm component 3 in the same annular area will remain consistent. If the light intensity sensed by the same light intensity sensing ring 19 is inconsistent at different positions, it indicates that there are minute cracks in the diaphragm component 3 when it reaches the limit of its stroke. In this way, the minute cracks in the diaphragm component 3 when it reaches the limit of its stretching state can be squeezed by the instantaneous high pressure state, so that the minute crack defects in the diaphragm component 3 can be magnified and detected, thereby improving the overall detection efficiency and detection accuracy. When testing the dynamic tensile condition of the diaphragm component 3, after various operating states, the through-beam photoelectric sensor 16 is controlled to slide in the guide groove of the strain detection mounting ring 15. Then the through-beam photoelectric sensor 16 will move in a circular motion toward the axis of the diaphragm component 3. This makes it easy to detect whether the diaphragm component 3 will have deformation that cannot be elastically recovered after tensile deformation during each testing stop stage, ensuring the reliable use of the diaphragm component 3. When simulating various operating conditions of the diaphragm component 3, the vacuum pump 21 and pressure plate 22 are rotated downwards by the steering seat 20, causing the sealing ring 25 to press against the test port of the simulation test box 2. Subsequently, the reciprocating drive mechanism 4 drives the diaphragm component 3 to continuously reciprocate and stretch, thus applying force to the simulated airbag 27. The multiple sets of mechanical stress simulation pressure plates 24 inside the simulated airbag 27 adjust the pushing displacement of different hydraulic push rods 23 according to the actual use of the diaphragm pump. When simulating a diaphragm pump failure, different parts of the diaphragm component 3 are subjected to different degrees of pressure, which is then continuously applied in subsequent tests. During the testing process, the vacuum pump 21 opens the control valve 26 on the sealing ring 25, and then uses the vacuum pump 21 to perform negative pressure operation on the sealed space where the diaphragm component 3 is located. If air bubbles or looseness appear inside the diaphragm component 3 during the production process or after multiple stretch tests, the continuous negative pressure state outside will cause the air pressure in the air bubble or loose area inside to be greater than the external air pressure. The internal air pressure gradually pushes outward, causing the diaphragm component 3 to expand continuously, and then be identified and detected by the through-beam photoelectric sensor 16 on the strain detection mounting ring 15, making the physical performance testing of the diaphragm more comprehensive.

[0025] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A diaphragm pump diaphragm material performance testing device, comprising a test bench (1) for testing two diaphragm components (3) and two simulated test chambers (2), characterized in that, The test bench (1) is connected to a reciprocating drive mechanism (4) via a mounting base at its top. The reciprocating drive mechanism (4) is connected to two symmetrically arranged pressure caps (5) via push rods. A stress concentration cylinder (7) is provided on the outside of the push rods. An amplification chamber (9) is connected to the outer wall of the stress concentration cylinder (7). An amplification component is provided inside the amplification chamber (9). An installation ring (14) is provided on the outside of the pressure caps (5). Two strain detection mounting rings (15) are connected to the inner wall of the mounting rings (14). A deformation detection component is provided inside the strain detection mounting rings (15). The simulation test box (2) is equipped with two guide rails (17), and a crack detection component is installed on the guide rails (17). A steering seat (20) is hoisted inside the simulation test box (2). A vacuum pump (21) is fixedly connected to the steering seat (20) by a fixing rod. A pressure plate (22) is connected to the vacuum pump (21). A simulation component is installed on the pressure plate (22). A simulation airbag (27) is installed outside the simulation component. A closed ring (25) is connected to the outer wall of the pressure plate (22).

2. The diaphragm pump diaphragm material performance testing equipment according to claim 1, characterized in that, The pressure cap (5) is fixedly assembled with the diaphragm component (3), and the reciprocating drive mechanism (4) is fixedly connected to two sets of symmetrically arranged adjustment magnetic blocks (6) through a push rod. The push rod is slidably connected to the stress concentration cylinder (7).

3. The diaphragm pump diaphragm material performance testing equipment according to claim 1, characterized in that, The amplification assembly includes an amplification telescopic rod (11) fixed to the inner end face of the amplification chamber (9), an electromagnetic amplification block (12) is fixedly connected to the bottom end of the amplification telescopic rod (11), an amplification port adapted to the electromagnetic amplification block (12) is opened on the stress concentration cylinder (7), and a micro air pump (10) is installed in the amplification chamber (9).

4. The diaphragm pump diaphragm material performance testing equipment according to claim 1, characterized in that, The inner wall of the stress concentration cylinder (7) is fixedly connected to an annular detection light strip (8), the annular detection light strip (8) is slidably connected to the push rod, the stress concentration cylinder (7) is fixedly installed to the mounting base, and the stress concentration cylinder (7) is fixedly connected to the mounting ring (14) through the storage cover (13).

5. The diaphragm pump diaphragm material performance testing equipment according to claim 1, characterized in that, The deformation detection assembly includes a through-beam photoelectric sensor (16), and an electrically controlled guide groove is provided on the inner wall of the strain detection mounting ring (15). The inner wall of the electrically controlled guide groove is slidably connected to the through-beam photoelectric sensor (16), and the mounting ring (14) is fixedly connected to the simulation detection box (2).

6. The diaphragm pump diaphragm material performance testing equipment according to claim 1, characterized in that, The simulation test box (2) located at the mounting ring (14) has a test port on its side wall. The simulation test box (2) is fixedly connected to the test bench (1). The inner side wall of the simulation test box (2) is fixedly connected to the guide rail (17).

7. The diaphragm pump diaphragm material performance testing equipment according to claim 1, characterized in that, The crack detection component consists of multiple light intensity sensing rings (19), which are spliced ​​from the inside out and arranged in a circular shape. The multiple light intensity sensing rings (19) are slidably connected to the guide rail (17) through the guide slider (18).

8. The diaphragm pump diaphragm material performance testing equipment according to claim 1, characterized in that, The simulation test box (2) is rotatably connected to the vacuum pump (21) via the steering seat (20). The vacuum pump (21) is connected to the closed ring (25). The closed ring (25) is equipped with multiple sets of control valves (26) at one end of the mounting ring (14).

9. The diaphragm pump diaphragm material performance testing equipment according to claim 1, characterized in that, The simulation component includes multiple hydraulic push rods (23) disposed within the simulation airbag (27). The pressure plate (22) is located at one end of the mounting ring (14) and is connected to multiple mechanical stress simulation pressure plates (24) via the multiple hydraulic push rods (23). The multiple mechanical stress simulation pressure plates (24) are arranged in a ring array from the inside out.

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