A wear test device for motor pump housings after application of a wear-resistant coating

Abstract

The utility model discloses a kind of wear test devices for motor pump shell after brushing wear-resistant coating, belong to motor pump shell wear resistance detection technical field, including rack, the upper surface of the rack is fixedly installed with protective cover and pump shell bearing seat, the protective cover cover is equipped in the outside of pump shell bearing seat, operating door sliding installation is opened at operating door side surface in operating mouth position, operating door is opened with two groups of jack in upper and lower, and one group of jack is inserted with latch in, the protective cover side surface is opened with the slot for the insertion of latch;Pump shell chucking mechanism, setting on pump shell bearing seat;By setting pump shell chucking mechanism, using two-way screw rod cooperation pump shell clamping plate use, different size, different shape motor pump shell can be adapted, and clamping force is uniform, centring is good, avoid pump shell deformation or displacement, pump shell clamping plate can be dismantled, further expand the application range of device.

Description

Technical Field

[0001] This utility model belongs to the field of wear resistance testing technology for motor pump casings, specifically relating to a wear resistance testing device for motor pump casings after applying a wear-resistant coating. Background Technology

[0002] The pump casing is the core protective and structural component of an electric pump. During long-term use, its inner wall or outer surface will wear down due to factors such as media erosion and component friction, resulting in thinning of the casing wall and decreased sealing performance, ultimately affecting the overall operating efficiency and service life of the electric pump. To extend the service life of the pump casing, the industry typically applies wear-resistant coatings such as ceramic-based coatings or metal-based wear-resistant coatings to its surface.

[0003] However, wear-resistant coatings with different formulations and coating processes have significantly different actual wear resistance performance. If they are put into use directly, there may be a risk of premature coating failure. Therefore, it is necessary to test the wear resistance of motor pump casings after applying wear-resistant coatings.

[0004] The existing testing equipment for wear-resistant coatings on motor pump casings has the following problems:

[0005] Most devices simply clamp the pump casing with a simple clamp, which cannot adapt to motor pump casings of different sizes and shapes. Furthermore, uneven clamping force can easily lead to pump casing deformation or displacement during the test, affecting the test accuracy.

[0006] The position and friction pressure of the friction components are difficult to adjust precisely, making it impossible to simulate the wear scenarios of the motor pump casing at different locations under actual working conditions.

[0007] During the test, the debris generated by friction is easily splashed, and there is a lack of effective protective structure. It is impossible to observe the wear status of the coating in real time, and the test must be stopped to check, which affects the test efficiency.

[0008] Therefore, we propose a wear resistance testing device for motor pump casings after applying a wear-resistant coating. Utility Model Content

[0009] The purpose of this invention is to provide a wear resistance testing device for motor pump housings after applying a wear-resistant coating. This addresses the problems of most devices in the background art that rely solely on simple clamps to hold the pump housing, making them unsuitable for motor pump housings of different sizes and shapes. Uneven clamping force can easily lead to pump housing deformation or displacement during the test, affecting test accuracy. Furthermore, the position and friction pressure of friction components are difficult to adjust precisely, making it impossible to simulate wear scenarios at different locations of the motor pump housing under actual working conditions. Additionally, debris generated during the test is prone to splashing, lacking an effective protective structure, and the inability to observe the coating wear status in real time, requiring the test to be paused for inspection, thus affecting test efficiency.

[0010] To achieve the above objectives, this utility model provides the following technical solution: an abrasion resistance testing device for motor pump housings after applying abrasion-resistant coating, comprising a frame, wherein a protective cover and a pump housing support are fixedly installed on the upper surface of the frame, and the protective cover is provided on the outside of the pump housing support.

[0011] The operating door is slidably installed at the operating port position on the side of the protective cover. The operating door has two sets of insertion holes, one of which is equipped with a pin. The side of the protective cover has a slot for inserting the pin.

[0012] The pump casing clamping mechanism is installed on the pump casing support;

[0013] The pump casing clamping mechanism includes a power component fixed to the side of the pump casing support, a bidirectional screw rotatably installed inside the pump casing support, two threaded plates respectively threaded onto the outer surfaces of the two threads of the bidirectional screw, a mounting bracket fixedly installed on the threaded plates, and a pump casing clamping plate detachably installed on the side of the mounting bracket by mounting bolts. The output shaft of the power component is fixedly connected to the bidirectional screw, and the two pump casing clamping plates are arranged opposite to each other.

[0014] Telescopic component one is fixedly installed on the surface of the protective cover. An installation plate is fixedly installed on the output end of the telescopic component one, and a sliding block is slidably provided on the lower surface of the installation plate.

[0015] Telescopic component two is fixedly installed on the side of the sliding block, and a mounting base is fixedly installed on the side of the telescopic component two;

[0016] The friction pad is detachably installed below the sliding block.

[0017] The above-mentioned scheme, by setting up a pump casing clamping mechanism and using a bidirectional screw in conjunction with a pump casing clamping plate, can adapt to motor pump casings of different sizes and shapes. It provides uniform clamping force and good centering, preventing pump casing deformation or displacement. The pump casing clamping plate is detachable, further expanding the applicability of the device. The first telescopic component allows for precise adjustment of the contact pressure between the friction plate and the coating, simulating wear scenarios under different loads. The second telescopic component drives the friction plate to reciprocate, adjusting the friction frequency and stroke. The mounting base can slide along the mounting plate, enabling wear tests on different areas of the pump casing. A protective cover and operating door form a closed protective space, preventing debris from splashing. The limiting structure and latch locking of the operating door ensure the stability of the door during the test. A transparent glass plate allows for real-time observation without interrupting the test.

[0018] In a preferred embodiment, a limit block is fixedly installed on the side of the operating door, and a limit groove is opened on the side of the operating opening on the protective cover, and a limit rod and a spring are fixedly installed in the limit groove. The limit block is slidably installed on the outer surface of the limit rod, and the limit block is fixedly connected to the spring.

[0019] Using the above scheme, the limiting rod guides the sliding direction of the limiting block, preventing the operating door from deviating when sliding. When spring one is in its natural state, the operating door can be pulled to fit the operating opening of the protective cover by the limiting block, enhancing the sealing of the test environment. When the operating door is opened, the limiting block compresses spring one, and spring one resets after closing, realizing the automatic return of the operating door without manual adjustment, thus improving the convenience of operation.

[0020] In one preferred embodiment, a plurality of guide rods are fixedly installed on the inner wall of the pump housing support, and the threaded plate is slidably installed on the outer surface of the plurality of guide rods.

[0021] With the above scheme, when the bidirectional screw rotates, the guide rod slides with the threaded plate, which can limit the rotational freedom of the threaded plate, ensure that the two pump casing clamping plates always move in parallel and towards each other, improve clamping stability and centering, and prevent the pump casing from deforming due to clamping force deviation.

[0022] In a preferred embodiment, a plurality of alignment guide blocks are fixedly installed on the side of the mounting bracket, and alignment guide grooves for the alignment guide blocks to be inserted are provided on the side of the pump casing plate.

[0023] Using the above solution, for motor pump casings of different shapes such as round, square, or different sizes, it is necessary to replace the appropriate pump casing clamping plate. The matching of the alignment guide block and the alignment guide groove can quickly achieve the positioning and alignment of the pump casing clamping plate and the mounting bracket, avoiding misalignment during installation. The alignment structure can distribute the force on the mounting bolts, preventing the bolts from breaking due to uneven force after long-term use, thus extending the service life of the components.

[0024] In a preferred embodiment, a plurality of guide rods are slidably mounted on the protective cover, and the bottom end of the guide rods is fixedly connected to the mounting plate.

[0025] With the above scheme, when the telescopic component one moves the mounting plate up and down, the guide rod two slides with the protective cover, which plays a vertical guiding role in the movement direction of the mounting plate, ensuring that the mounting plate always moves in the vertical direction, ensuring that the contact area between the friction plate and the coating is uniform, and improving the accuracy of the test data.

[0026] In a preferred embodiment, a plurality of trapezoidal strips are fixedly installed on the lower surface of the mounting plate, and a trapezoidal groove is provided on the surface of the mounting base for the trapezoidal strips to slide.

[0027] Using the above scheme, the combination of the trapezoidal strip and the trapezoidal groove forms an anti-detachment guide structure. The trapezoidal structure can limit the vertical displacement of the mounting base, preventing the mounting base from falling off the mounting plate due to vibration or frictional reaction force during the test. The trapezoidal guide can ensure that the mounting base slides along a fixed trajectory, making it easy to adjust the friction position of the friction plate on the pump casing surface, such as moving it from one end of the pump casing to the other, thus improving the diversity of test scenarios.

[0028] In a preferred embodiment, a plurality of guide rods are fixedly installed inside the mounting base, and the sliding block (16 guide rods) is slidably installed on the outer surface of the guide rods.

[0029] With the above solution, when the telescopic component 2 pushes the sliding block to move back and forth, the guide rod 3 can restrict the movement direction of the sliding block, ensuring that the sliding block always moves in a straight line, avoiding the friction plate from shifting or shaking during the friction process. The guide rod 3 can disperse the friction between the sliding block and the mounting base, reduce the wear of the inner wall of the mounting base, and extend the service life of the mounting base.

[0030] In a preferred embodiment, a positioning block is fixedly installed on the side of the mounting base, a positioning rod is slidably installed on the positioning block, a spring is fixedly installed between the head end of the positioning rod and the positioning block, and a plurality of positioning grooves are formed on the surface of the mounting plate, with the tail end of the positioning rod cooperating with the positioning grooves.

[0031] Using the above solution, after adjusting the position of the mounting seat on the mounting plate, if wear tests are to be conducted on different areas of the pump casing, the position of the mounting seat needs to be fixed. The elastic force of spring two can push the tail end of the positioning rod into the positioning groove of the mounting plate, realizing the quick positioning and locking of the mounting seat. When the position needs to be adjusted, simply pull the head end of the positioning rod to compress spring two and make the positioning rod disengage from the positioning groove, and the mounting seat can slide. The operation is simple and the positioning is firm, avoiding displacement of the mounting seat during the test.

[0032] In a preferred embodiment, a fixing rod is fixedly installed on the side of the sliding block, the surface of the fixing rod has threads and a fixing nut is installed in the threads, a fixing plate is fixedly installed on the surface of the friction plate, and a through hole is opened on the fixing plate, through which the fixing rod passes.

[0033] Using the above scheme, the friction plate is a vulnerable part in the test and needs to be replaced regularly. When disassembling, simply unscrew the fixing nut to remove the fixing plate along with the friction plate from the fixing rod. When installing, align the through hole of the fixing plate with the fixing rod and insert it, then tighten the fixing nut. There is no need to disassemble the sliding block or other parts, which greatly shortens the replacement time of vulnerable parts. At the same time, the cooperation between the fixing rod and the nut can ensure that the friction plate is installed firmly and prevent the friction plate from falling off during the test.

[0034] In a preferred embodiment, the operating door is provided with an observation port, and a transparent glass plate is installed inside the observation port.

[0035] Using the above scheme, the wear condition of the pump casing coating, such as coating peeling and scratch depth, needs to be observed in real time during the test. The transparent glass plate can ensure the protective effect while realizing real-time observation of the test process without pausing the test, thus improving test efficiency and data integrity.

[0036] Compared with the prior art, the beneficial effects of this utility model are:

[0037] This wear resistance testing device for motor pump casings after applying a wear-resistant coating features a pump casing clamping mechanism. It uses a bidirectional screw in conjunction with a pump casing clamping plate, which can adapt to motor pump casings of different sizes and shapes. The clamping force is uniform and the centering is good, preventing pump casing deformation or displacement. The pump casing clamping plate is detachable, further expanding the applicability of the device.

[0038] This wear resistance testing device for motor pump casing after applying wear-resistant coating has a telescopic component 1 that can precisely adjust the contact pressure between the friction plate and the coating to simulate wear scenarios under different loads. The telescopic component 2 can drive the friction plate to reciprocate and adjust the friction frequency and stroke. The mounting base can slide along the mounting plate to realize wear tests on different areas of the pump casing.

[0039] This wear-resistant testing device for motor pump casings after applying abrasion-resistant coating forms a closed protective space by setting up a protective cover and an operating door to prevent debris from splashing. The limiting structure and latch locking of the operating door ensure the stability of the door during the test, and the transparent glass plate enables real-time observation without interrupting the test. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of this utility model;

[0041] Figure 2 This is a structural schematic diagram of the protective cover and operating door of this utility model in cross-section;

[0042] Figure 3 This is a schematic diagram of the structure of the protective cover and operating door of this utility model in the event of an explosion.

[0043] Figure 4 This is a schematic diagram of the cross-sectional structure of the pump casing support of this utility model;

[0044] Figure 5 This is a schematic diagram of the exploded structure of the mounting bracket and pump casing clamp of this utility model;

[0045] Figure 6 This is a schematic diagram of the mounting plate of this utility model;

[0046] Figure 7 This is a schematic diagram of the structure of the mounting base of this utility model;

[0047] Figure 8 This is a schematic diagram of the structure of the sliding block and friction plate of this utility model in the event of an explosion.

[0048] In the diagram: 1. Frame; 2. Protective cover; 3. Operating door; 4. Pin; 5. Pump casing support; 6. Power component; 7. Bidirectional screw; 8. Threaded plate; 9. Mounting bracket; 10. Pump casing clamping plate; 11. Mounting bolt; 12. Telescopic component one; 13. Mounting plate; 14. Mounting seat; 15. Telescopic component two; 16. Sliding block; 17. Friction plate; 18. Limiting block; 19. Limiting rod; 20. Spring one; 21. Guide rod one; 22. Alignment guide block; 23. Guide rod two; 24. Trapezoidal strip; 25. Positioning block; 26. Positioning rod; 27. Spring two; 28. Guide rod three; 29. ​​Fixing rod; 30. Fixing plate; 31. Fixing nut; 32. Transparent glass plate. Detailed Implementation

[0049] Please see Figure 1-8 This utility model provides a wear resistance testing device for motor pump housing after applying a wear-resistant coating, including a frame 1, a protective cover 2 and a pump housing support 5 fixedly installed on the upper surface of the frame 1, the protective cover 2 covering the outside of the pump housing support 5;

[0050] The operating door 3 is slidably installed at the operating port position on the side of the protective cover 2. The operating door 3 has two sets of insertion holes, one of which is fitted with a pin 4. The side of the protective cover 2 has a slot for the pin 4 to be inserted.

[0051] The pump casing clamping mechanism is installed on the pump casing support 5;

[0052] The pump casing clamping mechanism includes a power component 6 fixed to the side of the pump casing support 5, a bidirectional screw 7 rotatably installed inside the pump casing support 5, two threaded plates 8 respectively threaded onto the outer surfaces of the two threads of the bidirectional screw 7, a mounting bracket 9 fixedly installed on the threaded plates 8, and a pump casing clamping plate 10 detachably installed on the side of the mounting bracket 9 by mounting bolts 11. The output shaft of the power component 6 is fixedly connected to the bidirectional screw 7, and the two pump casing clamping plates 10 are arranged opposite to each other.

[0053] Telescopic component 12 is fixedly installed on the surface of protective cover 2. An installation plate 13 is fixedly installed at the output end of telescopic component 12. A sliding block 16 is slidably provided on the lower surface of the installation plate 13.

[0054] Telescopic component 2 15 is fixedly installed on the side of sliding block 16, and mounting base 14 is fixedly installed on the side of telescopic component 2 15;

[0055] Friction plate 17 is detachably mounted below sliding block 16.

[0056] A limiting block 18 is fixedly installed on the side of the operating door 3. A limiting groove is opened on the side of the operating port on the protective cover 2, and a limiting rod 19 and a spring 20 are fixedly installed in the limiting groove. The limiting block 18 is slidably installed on the outer surface of the limiting rod 19. The limiting block 18 is fixedly connected to the spring 20. The limiting rod 19 guides the sliding direction of the limiting block 18 to prevent the operating door 3 from deviating when sliding. When the spring 20 is in its natural state, the operating door 3 can be pulled to fit the operating port of the protective cover 2 by the limiting block 18 to enhance the sealing of the test environment. When the operating door 3 is opened, the limiting block 18 compresses the spring 20. After closing, the spring 20 resets, realizing the automatic return of the operating door 3 without manual adjustment, thus improving the convenience of operation.

[0057] Several guide rods 21 are fixedly installed on the inner wall of the pump casing support 5. The threaded plate 8 is slidably installed on the outer surface of the guide rods 21. When the bidirectional screw 7 rotates, the guide rods 21 and the threaded plate 8 slide together, which can limit the rotational freedom of the threaded plate 8, ensure that the two pump casing clamping plates 10 always move in parallel and towards each other, improve clamping stability and centering, and prevent the pump casing from deforming due to clamping force deviation.

[0058] Several alignment guide blocks 22 are fixedly installed on the side of the mounting bracket 9. The side of the pump casing clamping plate 10 is provided with alignment guide grooves for the alignment guide blocks 22 to be inserted. For motor pump casings of different shapes, such as round, square or different sizes, it is necessary to replace the appropriate pump casing clamping plate 10. The cooperation between the alignment guide blocks 22 and the alignment guide grooves can quickly realize the positioning and alignment of the pump casing clamping plate 10 and the mounting bracket 9, avoiding misalignment during installation. The alignment structure can share the force of the mounting bolts 11, preventing the bolts from breaking due to uneven force after long-term use, and extending the service life of the components.

[0059] Several guide rods 23 are slidably installed on the protective cover 2. The bottom end of the guide rods 23 is fixedly connected to the mounting plate 13. When the telescopic component 12 drives the mounting plate 13 to move up and down, the guide rods 23 slide with the protective cover 2, which plays a vertical guiding role in the movement direction of the mounting plate 13, ensuring that the mounting plate 13 always moves in the vertical direction, ensuring that the contact area between the friction plate 17 and the coating is uniform, and improving the accuracy of the test data.

[0060] Several trapezoidal strips 24 are fixedly installed on the lower surface of the mounting plate 13. The surface of the mounting base 14 is provided with trapezoidal grooves for the trapezoidal strips 24 to slide. The cooperation between the trapezoidal strips 24 and the trapezoidal grooves is an anti-detachment guide structure. The trapezoidal structure can limit the vertical displacement of the mounting base 14, preventing the mounting base 14 from falling off the mounting plate 13 due to vibration or frictional reaction force during the test. The trapezoidal guide can ensure that the mounting base 14 slides along a fixed trajectory, which is convenient for adjusting the friction position of the friction plate 17 on the pump casing surface, such as moving it from one end of the pump casing to the other end, thereby improving the diversity of test scenarios.

[0061] Several guide rods 28 are fixedly installed inside the mounting base 14. The guide rods 28 of the sliding block 16 are slidably installed on the outer surface of the guide rods. When the telescopic component 15 pushes the sliding block 16 to move back and forth, the guide rods 28 can limit the movement direction of the sliding block 16, ensuring that the sliding block 16 always moves in a straight line, avoiding the friction plate 17 from deviating or shaking during the friction process. The guide rods 28 can disperse the friction between the sliding block 16 and the mounting base 14, reduce the wear of the inner wall of the mounting base 14, and extend the service life of the mounting base 14.

[0062] A positioning block 25 is fixedly installed on the side of the mounting base 14. A positioning rod 26 is slidably installed on the positioning block 25. A spring 27 is fixedly installed between the head end of the positioning rod 26 and the positioning block 25. Several positioning grooves are opened on the surface of the mounting plate 13. The tail end of the positioning rod 26 is used in conjunction with the positioning groove. After adjusting the position of the mounting base 14 on the mounting plate 13, if wear tests are to be performed on different areas of the pump casing, the position of the mounting base 14 needs to be fixed. The elastic force of the spring 27 can push the tail end of the positioning rod 26 into the positioning groove of the mounting plate 13, realizing the quick positioning and locking of the mounting base 14. When the position needs to be adjusted, only the head end of the positioning rod 26 needs to be pulled to compress the spring 27 so that the positioning rod 26 is disengaged from the positioning groove, and the mounting base 14 can be slid. The operation is simple and the positioning is firm, avoiding the displacement of the mounting base 14 during the test.

[0063] A fixing rod 29 is fixedly installed on the side of the sliding block 16. The surface of the fixing rod 29 has threads and a fixing nut 31 is installed in the threads. A fixing plate 30 is fixedly installed on the surface of the friction plate 17. The fixing plate 30 has a through hole, through which the fixing rod 29 passes. The friction plate 17 is a vulnerable part in the test and needs to be replaced regularly. When disassembling, simply unscrew the fixing nut 31 to remove the fixing plate 30 along with the friction plate 17 from the fixing rod 29. When installing, align the through hole of the fixing plate 30 with the fixing rod 29 and insert it, then tighten the fixing nut 31. There is no need to disassemble the sliding block 16 or other parts, which greatly shortens the replacement time of vulnerable parts. At the same time, the cooperation between the fixing rod 29 and the nut ensures that the friction plate 17 is installed firmly and prevents the friction plate 17 from falling off during the test.

[0064] An observation port is provided on the operating door 3, and a transparent glass plate 32 is installed inside the observation port. During the test, it is necessary to observe the wear state of the pump shell coating in real time, such as coating peeling and scratch depth. The transparent glass plate 32 can achieve real-time observation of the test process while ensuring the protective effect, without pausing the test, thus improving test efficiency and data integrity.

[0065] When using

[0066] Experiment preparation phase:

[0067] To open the control door 3: Pull out the pin 4 on the control door 3, pull the control door 3, the limit block 18 slides along the limit rod 19 and compresses the spring 20 until the control door 3 is fully open;

[0068] Install the pump casing to be tested: Select the appropriate pump casing clamping plate 10 according to the size and shape of the pump casing, align the alignment guide groove of the pump casing clamping plate 10 with the alignment guide block 22 of the mounting bracket 9 and insert it, and tighten it with the mounting bolt 11. Place the motor pump casing to be tested after applying the wear-resistant coating on the pump casing support seat 5, start the power component 6, preferably a servo motor, the power component 6 drives the bidirectional screw 7 to rotate, the two reverse threads of the bidirectional screw 7 drive the two threaded plates 8 to move synchronously towards each other along the guide rod 21 until the two pump casing clamping plates 10 are tightly attached to the outer wall of the pump casing, turn off the power component 6, and the pump casing clamping is completed.

[0069] Install and adjust the friction plate 17: Select a friction plate 17 that is suitable for the actual working conditions, align the through hole of the fixing plate 30 of the friction plate 17 with the fixing rod 29 of the sliding block 16 and insert it, tighten the fixing nut 31, pull the head end of the positioning rod 26 to compress the second spring 27, push the mounting base 14 to slide along the trapezoidal strip 24 of the mounting plate 13, adjust the friction plate 17 to be directly above the pump housing test area, release the positioning rod 26, the second spring 27 resets and pushes the tail end of the positioning rod 26 into the positioning groove of the mounting plate 13, and fix the position of the mounting base 14;

[0070] Close operating door 3: Release operating door 3, spring 20 returns to its original position and pulls limit block 18 to slide along limit rod 19, operating door 3 automatically returns to its original position, insert pin 4 into the socket of operating door 3 and slot of protective cover 2 to lock operating door 3.

[0071] Trial operation phase

[0072] Adjusting friction pressure: Start telescopic component 12, preferably an electric push rod. Telescopic component 12 pushes the mounting plate 13 vertically down along the guide rod 23 until the friction plate 17 contacts the wear-resistant coating on the pump housing surface. Set the output pressure of telescopic component 12, i.e. the contact pressure of the friction plate 17 on the coating, according to the test requirements. Then close telescopic component 12.

[0073] Simulated friction and wear: Start the telescopic component 2 15. The telescopic component 2 15 is preferably a small electric push rod. The telescopic component 2 15 pushes the sliding block 16 to slide back and forth along the guide rod 3 28 of the mounting base 14. The friction plate 17 rubs against the pump shell coating. By controlling the telescopic frequency and stroke of the telescopic component 2 15, the wear speed and wear range under different working conditions are simulated.

[0074] Real-time observation: During the test, the wear condition of the pump casing coating is observed in real time through the transparent glass plate 32 on the operating door 3, such as whether the coating has scratches, peeling, or exposure of the substrate, and parameters such as test time and number of friction cycles are recorded.

[0075] End of test phase

[0076] Stop friction action: Close telescopic component 2 15, and slide block 16 stops moving; start telescopic component 1 12, which drives mounting plate 13 and friction plate 17 to rise to the pump housing surface, and close telescopic component 1 12.

[0077] Remove the pump casing: Pull out the pin 4, open the operating door 3, start the power component 6 to rotate in the opposite direction, the double screw 7 drives the two threaded plates 8 to move in opposite directions, the pump casing clamp 10 disengages from the pump casing, remove the pump casing and check the degree of coating wear, such as measuring the scratch depth, wear area, etc.

[0078] Maintenance and cleaning: If the friction plate 17 is severely worn, unscrew the fixing nut 31 and replace it with a new friction plate 17; clean the friction debris inside the pump housing bearing seat 5 and the protective cover 2, close the operating door 3, and complete the test.

Claims

1. A wear resistance testing device for motor pump casings after applying a wear-resistant coating, characterized in that: Includes a frame (1), on the upper surface of which a protective cover (2) and a pump housing support (5) are fixedly installed, the protective cover (2) covering the outside of the pump housing support (5); The operating door (3) is slidably installed at the operating port position on the side of the protective cover (2). The operating door (3) has two sets of upper and lower insertion holes, and a pin (4) is inserted into one set of insertion holes. The protective cover (2) has a slot for the pin (4) to be inserted. The pump casing clamping mechanism is installed on the pump casing support (5); The pump casing clamping mechanism includes a power component (6) fixed to the side of the pump casing support (5), a bidirectional screw (7) rotatably installed inside the pump casing support (5), two threaded plates (8) respectively threaded on the outer surfaces of the two threads of the bidirectional screw (7), a mounting bracket (9) fixedly installed on the threaded plate (8), and a pump casing clamping plate (10) detachably installed on the side of the mounting bracket (9) by mounting bolts (11). The output shaft of the power component (6) is fixedly connected to the bidirectional screw (7), and the two pump casing clamping plates (10) are arranged opposite to each other. Telescopic component 1 (12) is fixedly installed on the surface of the protective cover (2). The output end of the telescopic component 1 (12) is fixedly installed with a mounting plate (13). A sliding block (16) is slidably provided on the lower surface of the mounting plate (13). Telescopic component two (15) is fixedly installed on the side of the sliding block (16), and a mounting base (14) is fixedly installed on the side of the telescopic component two (15). The friction plate (17) is detachably mounted below the sliding block (16).

2. The wear resistance testing device for motor pump casing after applying a wear-resistant coating according to claim 1, characterized in that: A limiting block (18) is fixedly installed on the side of the operating door (3). A limiting groove is opened on the side of the operating port on the protective cover (2), and a limiting rod (19) and a spring (20) are fixedly installed in the limiting groove. The limiting block (18) is slidably installed on the outer surface of the limiting rod (19), and the limiting block (18) is fixedly connected to the spring (20).

3. The wear resistance testing device for motor pump casings after applying a wear-resistant coating as described in claim 1, characterized in that: The inner wall of the pump housing support (5) is fixedly installed with several guide rods (21), and the threaded plate (8) is slidably installed on the outer surface of the several guide rods (21).

4. The wear resistance testing device for motor pump casings after applying a wear-resistant coating as described in claim 1, characterized in that: A number of alignment guide blocks (22) are fixedly installed on the side of the mounting bracket (9), and alignment guide grooves for the alignment guide blocks (22) to be inserted are provided on the side of the pump casing plate (10).

5. The wear resistance testing device for motor pump casing after applying a wear-resistant coating according to claim 1, characterized in that: Several guide rods (23) are slidably installed on the protective cover (2), and the bottom end of the guide rods (23) is fixedly connected to the mounting plate (13).

6. The wear resistance testing device for motor pump casings after applying a wear-resistant coating according to claim 1, characterized in that: A number of trapezoidal strips (24) are fixedly installed on the lower surface of the mounting plate (13), and a trapezoidal groove is provided on the surface of the mounting base (14) for the trapezoidal strips (24) to slide.

7. The wear resistance testing device for motor pump casing after applying a wear-resistant coating according to claim 1, characterized in that: The mounting base (14) has several guide rods (28) fixedly installed inside, and the sliding block (16) slides on the outer surface of the guide rods (28).

8. The wear resistance testing device for motor pump casing after applying a wear-resistant coating according to claim 1, characterized in that: A positioning block (25) is fixedly installed on the side of the mounting base (14). A positioning rod (26) is slidably installed on the positioning block (25). A spring (27) is fixedly installed between the head end of the positioning rod (26) and the positioning block (25). Several positioning grooves are opened on the surface of the mounting plate (13). The tail end of the positioning rod (26) is used in conjunction with the positioning groove.

9. The wear resistance testing device for motor pump casing after applying a wear-resistant coating according to claim 1, characterized in that: A fixing rod (29) is fixedly installed on the side of the sliding block (16). The surface of the fixing rod (29) has threads and a fixing nut (31) is installed on the threads. A fixing plate (30) is fixedly installed on the surface of the friction plate (17). A through hole is opened on the fixing plate (30) and the fixing rod (29) passes through the through hole.

10. The wear resistance testing device for motor pump casing after applying a wear-resistant coating according to claim 1, characterized in that: The operating door (3) has an observation port, and a transparent glass plate (32) is installed inside the observation port.

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