Self-priming pump body and pressure resistance testing machine therefor

Abstract

A self-priming pump body and a pressure resistance testing machine therefor. The self-priming pump body comprises a base, a drive electric motor being fixed on the base, a shell being fixed on the base, a drive cover being fixed on one side of the shell, a transmission rod being rotatably arranged in the drive cover, the output end of the drive electric motor being connected to an impeller in the shell by means of the transmission rod, a water inlet being fixed on one side of the shell, and a water outlet being fixed on the shell. The pressure resistance testing machine comprises a machine table, a material-conveying table being fixed on the machine table, two testing tables being fixed on one side of the material-conveying table, material conveying rollers being rotatably arranged in an array on the material-conveying table, two material discharge ports being provided on one side of the material-conveying table, a first cylinder being fixed on one end of each test table, and a circular plate being fixedly arranged at an output end of each first cylinder. In the present invention, the interior of a self-priming pump is tested by means of a first testing piece, which can simulate the impact of impurities in conveyed liquid on the interior of the self-priming pump body; and the exterior of the self-priming pump is tested by means of a second testing piece, which tests the compressive strength of the self-priming pump body, thereby achieving a high test accuracy.

Description

A self-priming pump body and its pressure testing machine Technical Field

[0001] This invention relates to the field of self-priming pump testing technology, specifically a self-priming pump body and its pressure resistance testing machine. Background Technology

[0002] Self-priming pumps are a type of self-priming centrifugal pump. Their compact structure and convenient operation make them widely used, and they also have a strong self-priming capability.

[0003] In the prior art, such as the application with application number CN202311104830.4, the title is: A magnetic pump casing water pressure testing machine, which includes a testing frame, a sealing pressure seat, an elbow drive assembly and a testing pump body. A drive seat and a test seat are fixedly installed on the surface of the testing frame. Several sliding guide rods are fixedly installed on the relatively inner sides of the drive seat and the test seat. A pressure plate sealing gasket is fixed on the relatively inner sides of the sealing pressure seat and the test seat. A water pressure gauge and an air pressure gauge are provided on the surface of the pressure plate sealing gasket. Technical issues

[0004] However, the testing machines mentioned in the existing technology use water pressure gauges and air pressure gauges for testing. The testing process is stable, but it cannot simulate the actual working conditions of the water pump, resulting in poor testing results. Therefore, it is necessary to design a self-priming pump body and its pressure resistance testing machine. Technical solutions

[0005] The purpose of this invention is to provide a self-priming pump body and its pressure testing machine to solve the problems in the prior art.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A pressure testing machine for a self-priming pump body includes a base, a drive motor fixed on the base, a housing fixed on the base, a drive cover fixed on one side of the housing, a transmission rod rotating inside the drive cover, the output end of the drive motor being connected to an impeller inside the housing through the transmission rod, an inlet fixed on one side of the housing, and an outlet fixed on the housing.

[0008] The pressure resistance tester includes a machine base, on which a feeding platform is fixed. Two testing platforms are fixed on one side of the feeding platform. Feeding rollers are arranged in an array and rotate on the feeding platform. Two discharge ports for feeding self-priming pumps to the testing platforms are provided on one side of the feeding platform. A cylinder is fixed at one end of the testing platform, and a circular plate is fixed at the output end of the cylinder.

[0009] Furthermore, the testing platform is symmetrically provided with positioning blocks, and uprights are fixed on both sides of the testing platform. A second cylinder is fixed on the uprights, and a pressure plate is fixed to the output end of the second cylinder. A positioning groove is provided below the pressure plate, and the positioning groove cooperates with the positioning block.

[0010] A guide plate is fixedly connected to the bottom of the machine base. The guide plate is provided with a guide groove, and horizontal grooves are symmetrically provided on the guide plate and below the guide groove.

[0011] Furthermore, a test piece is fixed on the testing platform, a guide rod and a motor are fixed on the test piece, a bidirectional lead screw rotates on the test piece, the output end of the motor is connected to the bidirectional lead screw, a clamp slides symmetrically on the guide rod, a V-shaped groove is symmetrically fixed on the clamp, and an arc groove for clamping the water outlet is provided on the V-shaped groove.

[0012] Furthermore, a mounting bracket is fixed on the test piece one, a cylinder three is fixedly connected to the mounting bracket, a pressure block is fixedly connected to the output end of the cylinder three, a pressure rod slides symmetrically on the test piece one, a slope block is provided at the top of the pressure rod, the slope block is connected to the mounting bracket by a spring one, and a mounting rod is fixedly connected to one end of the pressure rod.

[0013] An L-shaped rod is fixed to the side of the gripper. The top of the L-shaped rod is slidably connected to the inclined surface of the inclined block. A detection rod is slidably attached to the end of the mounting rod. A second spring is fixed to the detection rod and is connected to the side of the mounting rod. A groove is fixed to one end of the detection rod, and an arc rod is fixed to the other end. A pressure sensor for detecting internal pressure is fixed to one side of the arc rod.

[0014] Furthermore, a lifting assembly is fixed below the machine base. The lifting assembly includes a base frame, on which top rollers are arranged in an array and rotate. A guide column is fixed on the outer side of the base frame and is slidably connected to a guide groove. A support rod rotates below the base frame, and a support block rotates at one end of the support rod and is slidably connected to a cross groove.

[0015] Furthermore, two feeding components are fixed on one side of the feeding platform. The feeding components are fixed on the machine base. A cylinder four is fixed on the feeding component. A push rod is fixed to the output end of the cylinder four. A push block is fixed to one end of the push rod. A driven rod slides on the push rod. The driven rod slides on the machine base. A push rod for moving the support block is fixed to one end of the driven rod.

[0016] One side of the driven rod is attached to the top block, and the other side is fixed with spring three. The output end of cylinder four is fixedly connected to a fixing block, and the fixing block is fixedly connected to spring three.

[0017] Furthermore, a test piece two is fixed on the testing platform. The test piece two includes a fixed frame, guide rods two are fixed on both sides of the fixed frame, a lead screw rotates on the fixed frame, a motor two is fixed on the fixed frame, the output end of the motor two is connected to the lead screw, and a movable frame is slidably provided on the guide rods two. The movable frame is threadedly connected to the lead screw.

[0018] The top of the fixed frame is fixed with cylinder five, the output end of cylinder five is fixed with a sealing plate, an air inlet pipe is fixed on one side of the sealing plate, an air outlet is provided below the sealing plate, an air pressure sensor is fixed inside the air outlet, the air outlet is connected to the air inlet pipe, the air inlet pipe is connected to an external air pump, and guide sleeves are symmetrically fixed on the movable frame.

[0019] Furthermore, a rectangular sleeve is fixed on the movable frame, two guide sleeves are fixed on both sides of the rectangular sleeve, a spring four is fixed inside the rectangular sleeve, a motor three is fixed on one side of the movable frame, and a cam is fixed to the output end of the motor three.

[0020] Furthermore, a movable block slides inside the rectangular sleeve, a limit rod is fixed on the movable block, four springs are sleeved on the limit rod, a horizontal plate that cooperates with the cam is fixed on one side of the movable block, a sliding hole is provided at the bottom of the movable block, a movable rod slides inside the rectangular sleeve, one end of the movable rod is slidably connected to the sliding hole, and a pressure plate is fixed to the other end.

[0021] Furthermore, the movable rod is provided with a retaining ring, which is fixedly connected to the movable rod. The retaining ring is attached to the lower part of the movable block. A U-shaped rod slides inside the guide sleeve. A connecting block is fixed to one end of the U-shaped rod, and a detection plate is fixed to the other end. A spring is fixed inside the connecting block, and one end of the spring is connected to the side of the rectangular sleeve.

[0022] One side of the connecting block is provided with an inclined guide surface, and a V-shaped block is fixed on one side of the moving block. The V-shaped block is slidably connected to the inclined guide surface. A pressure sensor for monitoring external pressure is fixed on the side of the detection plate away from the U-shaped rod. Beneficial effects

[0023] The beneficial effects of this invention are:

[0024] 1. The pressure resistance tester for the self-priming pump body of the present invention uses a test piece to test the inside of the self-priming pump body, detects the strength of the inner wall of the self-priming pump body, and can simulate the impact of impurities in the transported liquid on the inside of the self-priming pump body, and simulate test the actual situation inside the self-priming pump body.

[0025] 2. The pressure resistance testing machine for the self-priming pump body of the present invention has a simple structure. It uses test piece two to test the external exterior of the self-priming pump body to perform pressure resistance testing on the exterior of the self-priming pump body, test the compressive strength of the self-priming pump body, simulate the actual working conditions of the self-priming pump body, and has good testing effect and high testing accuracy. Attached Figure Description

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1 is a schematic diagram of the structure of the self-priming pump body of the present invention;

[0028] Figure 2 is a side view of the self-priming pump body of the present invention;

[0029] Figure 3 is a schematic diagram of the overall structure of the pressure resistance testing machine of the present invention;

[0030] Figure 4 is a schematic diagram of the pressure resistance testing machine of the present invention;

[0031] Figure 5 is a structural schematic diagram of the base of the present invention;

[0032] Figure 6 is a schematic diagram of the detection station of the present invention;

[0033] Figure 7 is a structural schematic diagram of test piece one of the present invention;

[0034] Figure 8 is a cross-sectional structural diagram of test piece one of the present invention;

[0035] Figure 9 is a schematic diagram of the feeding component and lifting assembly of the present invention;

[0036] Figure 10 is a structural schematic diagram of test piece two of the present invention;

[0037] Figure 11 is a structural schematic diagram of the second test piece of the present invention;

[0038] Figure 12 is a cross-sectional structural diagram of test piece two of the present invention;

[0039] Figure 13 is an enlarged structural diagram of point A in Figure 7 of this invention.

[0040] The annotations in the attached figures are explained as follows:

[0041] 1. Base; 2. Machine base; 3. Test piece one; 4. Test piece two; 5. Moving block; 6. Lifting assembly; 7. Feeding component; 10. Drive motor; 11. Bracket; 12. Drive cover; 13. Housing; 14. Outlet; 15. Inlet; 20. Positioning block; 21. Feeding platform; 22. Feeding roller; 23. Discharge port; 24. Detection platform; 25. Cylinder one; 26. Stand; 27. Cylinder II; 28. Pressure plate; 29. ​​Positioning groove; 30. Motor 1; 31. Double-acting lead screw; 32. Guide rod 1; 33. Mounting bracket; 34. Cylinder 3; 35. Pressure block; 36. Gripper; 37. Arc groove; 38. V-groove; 39. Pressure rod; 41. Fixing bracket; 42. Lead screw; 43. Guide rod 2; 44. Motor 2; 45. Moving frame; 46. Cylinder 5; 47. Sealing plate; 48. Inlet pipe 49. Guide sleeve; 51. V-block; 52. Horizontal plate; 53. Sliding hole; 54. Limiting rod; 55. Moving rod; 56. Pressure plate; 57. Retaining ring; 58. U-shaped rod; 59. Spring five; 61. Base frame; 62. Top roller; 63. Guide column; 64. Support rod; 65. Support block; 70. Cylinder four; 71. Driven rod; 72. Top block; 73. Fixing block; 74. Top rod; 75. Spring 3; 76. Push rod; 200. Guide plate; 201. Horizontal groove; 202. Guide groove; 361. L-shaped rod; 391. Inclined block; 392. Spring one; 393. Mounting rod; 394. Detection rod; 395. Spring two; 396. Inclined groove; 397. Arc rod; 400. Rectangular sleeve; 401. Spring four; 402. Cam; 581. Detection plate; 582. Connecting block; 583. Inclined guide surface. Embodiments of the present invention

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] A self-priming pump body and its pressure testing machine are disclosed. The pressure testing machine uses a pressure sensor to monitor the pressure test on the self-priming pump body, detects the material strength of the pump body, and improves the yield rate of self-priming pump products in actual production. The pressure sensor belongs to a type of intelligent sensor.

[0044] As shown in Figures 1 and 2, the self-priming pump body includes a base 1, a drive motor 10 fixedly mounted on the base 1, a bracket 11 fixedly mounted on the base 1, a transmission rod rotatably mounted inside the bracket 11, the transmission rod being fixedly connected to the output end of the drive motor 10, a housing 13 fixedly mounted on the base 1, a drive cover 12 fixedly mounted on one side of the housing 13, the transmission rod rotating inside the drive cover 12, and one end of the transmission rod passing through the drive cover 12 and fixedly connected to the impeller inside the housing 13, driving the impeller inside the housing 13 to rotate, thus having a strong liquid self-priming capability.

[0045] A water inlet 15 is fixedly provided on one side of the housing 13, and a water outlet 14 is fixedly provided on the housing 13. By rotating the impeller, liquid is drawn from the water inlet 15 by self-priming and then discharged from the water outlet 14, thereby realizing liquid-driven supply.

[0046] As shown in Figures 3-6, the pressure resistance testing machine includes a machine base 2. A feeding platform 21 is fixedly installed on the machine base 2. Two feeding components 7 are fixedly installed on one side of the feeding platform 21, and two testing platforms 24 are fixedly installed on the other side. Test component 1 3 is fixedly installed on one testing platform 24, and test component 2 4 is fixedly installed on the other testing platform 24. A lifting component 6 is fixedly installed below the machine base 2, and the lifting component 6 corresponds one-to-one with the feeding components 7.

[0047] The conveying platform 21 is equipped with an array of conveying rollers 22 that rotate and push the pump body to move on the conveying rollers 22 in sequence. The rotation of the conveying rollers 22 helps the pump body to feed materials in sequence. The conveying platform 21 has two discharge ports 23 on the side away from the feeding component 7. The discharge ports 23 are connected to the detection platform 24 to send the pump body on the conveying platform 21 into the detection platform 24.

[0048] A cylinder 25 is fixedly installed at the end of the testing platform 24 away from the discharge port 23. A circular plate is fixedly installed at the output end of the cylinder 25. A symmetrically distributed positioning block 20 is provided on the testing platform 24. A stand 26 is fixedly installed on both sides of the testing platform 24. A cylinder 27 is fixedly installed on the stand 26. A pressure plate 28 is fixedly connected to the output end of the cylinder 27. A positioning groove 29 is provided below the pressure plate 28. The positioning groove 29 cooperates with the positioning block 20 to position the connection position between the pressure plate 28 and the testing platform 24, ensuring that the pressure plate 28 is accurately pressed against the base 1 of the pump body.

[0049] Guide plates 200 are fixedly connected to the bottom of the machine base 2 and on both sides of the feeding component 7. Guide grooves 202 are provided on the guide plates 200. Horizontal grooves 201 are symmetrically provided on one side of the guide grooves 202. The horizontal grooves 201 are provided on the guide plates 200 and are located below the guide grooves 202.

[0050] As shown in Figures 6-8 and 13, a guide rod 32 is fixedly mounted on the test piece 3, a bidirectional lead screw 31 is rotatably mounted on the test piece 3, and a motor 30 is fixedly mounted on the test piece 3. The output end of the motor 30 is fixedly connected to the bidirectional lead screw 31 to control the rotation of the bidirectional lead screw 31. Symmetrically distributed grippers 36 are slidably mounted on the guide rod 32, and symmetrically distributed V-shaped grooves 38 are fixedly mounted on the grippers 36. An arc groove 37 is opened on the V-shaped groove 38. The arc groove 37 clamps the end of the water outlet 14, and the V-shaped groove 38 supports the pipe at the water outlet 14.

[0051] A mounting bracket 33 is fixedly mounted on the test piece 3. A cylinder 34 is fixedly connected to the mounting bracket 33. A pressure block 35 is fixedly connected to the output end of the cylinder 34. A pressure rod 39 is slidably distributed on the test piece 3. An inclined block 391 is opened at the top of the pressure rod 39. The inclined block 391 is fixedly connected to the top of the mounting bracket 33 by a spring 392. The inclined block 391 is supported by the spring 392. A mounting rod 393 is fixedly connected to one end of the pressure rod 39.

[0052] An L-shaped rod 361 is fixedly installed on the side of the gripper 36. The top of the L-shaped rod 361 faces the inclined surface of the inclined block 391. When the L-shaped rod 361 moves toward the inclined block 391, the end of the L-shaped rod 361 is slidably connected with the inclined surface of the inclined block 391, controlling the pressure rod 39 to move downward. Conversely, when the L-shaped rod 361 moves away from the inclined block 391, the fixation on the inclined block 391 is released, and the spring 392 pushes the pressure rod 39 to move upward.

[0053] A detection rod 394 is slidably provided at the end of the mounting rod 393. A second spring 395 is fixedly provided on the detection rod 394. One end of the second spring 395 is fixedly connected to the side of the mounting rod 393. Through the elastic force of the second spring 395, the two detection rods 394 tend to move closer to each other. A slanted groove 396 is fixedly provided at one end of the detection rod 394, and an arc rod 397 is fixedly provided at the other end. The two slanted grooves 396 move closer to each other.

[0054] The cylinder 34 controls the pressure block 35 to move downward. The pressure block 35 is slidably connected to the inclined groove 396, which pushes the two detection rods 394 to move in opposite directions. The arc rod 397 applies pressure towards the inner wall of the outlet 14. A pressure sensor is fixedly installed on the side of the arc rod 397 facing the inner wall. The pressure sensor is not shown in the figure. It is used to monitor and detect the pressure. The arc rod 397 performs a pressure resistance test on the inner wall of the outlet 14 to detect the water pressure resistance strength inside the self-priming pump body and ensure the strength of the self-priming pump body.

[0055] As shown in Figure 9, the lifting assembly 6 includes a base frame 61, on which an array of top rollers 62 are rotatably mounted. The base frame 61 moves upward until the top rollers 62 pass between adjacent conveying rollers 22. A guide post 63 is fixedly mounted on the outer side of the base frame 61. The guide post 63 is slidably connected to the guide groove 202 to guide the lifting and lowering movement of the base frame 61. A support rod 64 is rotatably mounted below the base frame 61. A support block 65 is rotatably connected to one end of the support rod 64 away from the base frame 61. The support block 65 is slidably connected to the transverse groove 201.

[0056] The feeding component 7 is fixedly installed on the machine base 2. A cylinder 70 is fixedly installed on the feeding component 7. A push rod 74 is fixedly connected to the output end of the cylinder 70. A push block 72 is fixedly connected to one end of the push rod 74. A driven rod 71 is slidably installed on the push rod 74. The driven rod 71 is slidably installed on the machine base 2. A push rod 76 is fixedly installed at one end of the driven rod 71. The push rod 76 is attached to one side of the support block 65. When the push rod 76 moves, it will push the support block 65 to move horizontally, so that the base frame 61 moves vertically under the guidance of the guide groove 202.

[0057] By moving the top roller 62, which is rotatably mounted on the base frame 61, upward, the top roller 62 supports the self-priming pump body on the conveying roller 22, making it easier for the top block 72 to push the self-priming pump body towards the discharge port 23.

[0058] One side of the driven rod 71 is attached to the top block 72, and the other side is fixedly connected to the spring 75. The output end of the cylinder 70 is fixedly connected to the fixing block 73, and the fixing block 73 is fixedly connected to the spring 75. When the output end of the cylinder 70 extends, the spring 75 will push the driven rod 71 to move, so that the driven rod 71 drives the push rod 76 to move the support block 76. When the lifting base frame 61 is completed, the output end of the cylinder 70 continues to extend, and the top rod 74 and the top block 72 slide off the driven rod 71 to move the self-priming pump body on the top roller 62.

[0059] As shown in Figures 10-12, the test piece 2 4 includes a fixed frame 41, with guide rods 2 43 fixedly mounted on both sides of the fixed frame 41, and a lead screw 42 on one side of the guide rods 2 43. The two ends of the lead screw 42 are rotatably connected to the fixed frame 41. A motor 2 44 is fixedly mounted on the top of the fixed frame 41, and the output end of the motor 2 44 is fixedly connected to the lead screw 42 to drive the lead screw 42 to rotate. A movable frame 45 is slidably mounted on the guide rods 2 43, and the movable frame 45 is threadedly connected to the lead screw 42.

[0060] A cylinder 46 is fixedly installed on the top of the fixed frame 41. A sealing plate 47 is fixedly connected to the output end of the cylinder 46. An air inlet pipe 48 is fixedly installed on one side of the sealing plate 47. An air outlet is opened below the sealing plate 47. A pressure sensor is fixedly installed in the air outlet. The air outlet is connected to the air inlet pipe 48. The air inlet pipe 48 is connected to the air pump through a pipeline. A guide sleeve 49 is fixedly installed on the movable frame 45. A rectangular sleeve 400 is fixedly installed on the movable frame 45.

[0061] A spring 401 is fixedly installed inside the rectangular sleeve 400. A motor 3 is fixedly installed on one side of the movable frame 45 (not shown in the figure). A cam 402 is fixedly connected to the output end of the motor 3.

[0062] A movable block 5 is slidably provided inside the rectangular sleeve 400. The top of the movable block 5 is fixedly connected to the spring 401. A horizontal plate 52 is fixedly provided on one side of the movable block 5. When the cam 402 rotates, it will push the horizontal plate 52 to move upward. A sliding hole 53 is provided at the bottom of the movable block 5. A movable rod 55 is slidably provided on the movable frame 45. The movable rod 55 passes through the bottom of the rectangular sleeve 400.

[0063] One end of the moving rod 55 is slidably connected to the sliding hole 53, and the other end is fastened to the pressure plate 56. A retaining ring 57 is sleeved on the moving rod 55 and is fixedly connected to the moving rod 55. The retaining ring 57 is attached to the lower part of the moving block 5. A limiting rod 54 is fixedly installed on the moving block 5. The limiting rod 54 is located inside the spring 401 and limits the spring 401. Two guide sleeves 49 are fixed on both sides of the rectangular sleeve 400 respectively.

[0064] A U-shaped rod 58 is slidably provided inside the guide sleeve 49. A connecting block 582 is fixedly provided at one end of the U-shaped rod 58. A spring 59 is fixedly provided inside the connecting block 582. One end of the spring 59 is fixedly connected to the side of the rectangular sleeve 400. An inclined guide surface 583 is provided on one side of the connecting block 582. A V-shaped block 51 is fixedly provided on one side of the moving block 5. The V-shaped block 51 is slidably connected to the inclined guide surface 583. A detection plate 581 is fixedly provided at the other end of the U-shaped rod 58. A pressure sensor is fixedly provided on the side of the detection plate 581 away from the U-shaped rod 58.

[0065] In this embodiment, the pressure sensor is model FSR-A406, and the air pressure sensor is model CYYZ51E.

[0066] The working principle is as follows:

[0067] The self-priming pump body is sequentially fed onto the conveying platform 21. The self-priming pump body is moved to the corresponding feeding component 7 at the discharge port 23. The cylinder 4 70 on the feeding component 7 is started. When the output end of the cylinder 4 70 extends, the driven rod 71 is pushed by the spring 3 75, which causes the push rod 76 to move the support block 76 and lift the base frame 61. Then the output end of the cylinder 4 70 continues to extend, and the push rod 74 and the push block 72 move the self-priming pump body on the top roller 62.

[0068] Move the self-priming pump body from the discharge port 23 to the test platform 24 at test piece 3. After fixing the self-priming pump body, test the inner wall of the self-priming pump body through test piece 3 to test the internal pressure resistance of the pump body.

[0069] Similarly, the self-priming pump body is moved to the test platform 24 at test piece 24. After the self-priming pump body is fixed, the cylinder 1 25 moves the circular plate to seal the water inlet 15 of the pump body, and the cylinder 5 46 moves the sealing plate 47 to seal the water outlet 14. The air is supplied to the self-priming pump through an external air pump, and the pressure inside the pump is monitored by an air pressure sensor. The motor 2 44 is started to control the screw 42 to rotate, so that the moving frame 45 moves down and the pressure plate 56 is in contact with the upper surface of the drive cover 12. As the moving frame 45 moves down, the pressure plate 56 pushes the moving block 5 upward.

[0070] When the V-shaped block 51 moves upward along the rectangular sleeve 400, the spring 59 pulls the U-shaped rod 58 to move towards each other. At this time, the two connecting blocks 582 will not contact each other, and the detection plate 581 will not be in contact with the side of the pump body's outlet 14.

[0071] Then, the control cam 402 rotates, moving the moving block 5. When the moving block 5 moves up, the spring 59 pulls the connecting block 582 to move towards each other until the two contact each other. The detection plate 581 impacts the side of the pump body's outlet 14 to perform external pressure detection. If the pump body is not up to standard, the self-priming pump will leak due to vibration, and the internal pressure of the pump body will change.

[0072] Finally, when the cam 402 rotates past the maximum rotation height, the moving block 5 moves down until the V-shaped block 51 separates the two connecting blocks 582. At this time, the moving block 5 is in contact with the retaining ring 57. This process is repeated to perform an external pressure resistance test on the self-priming pump body.

[0073] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A pressure testing machine for a self-priming pump body, the self-priming pump body comprising a base (1), a drive motor (10) fixed on the base (1), characterized in that, A housing (13) is fixed on the base (1), a drive cover (12) is fixed on one side of the housing (13), a transmission rod rotates inside the drive cover (12), the output end of the drive motor (10) is connected to the impeller inside the housing (13) through the transmission rod, a water inlet (15) is fixed on one side of the housing (13), and a water outlet (14) is fixed on the housing (13). The pressure resistance tester includes a machine base (2), a feeding platform (21) is fixed on the machine base (2), two test platforms (24) are fixed on one side of the feeding platform (21), feeding rollers (22) are arranged in an array on the feeding platform (21), two discharge ports (23) for feeding self-priming pumps to the test platforms (24) are provided on one side of the feeding platform (21), and a cylinder (25) is fixed at one end of the test platform (24), and a circular plate is fixed at the output end of the cylinder (25).

2. The pressure resistance testing machine for a self-priming pump body according to claim 1, characterized in that, The testing platform (24) is symmetrically provided with positioning blocks (20), and the testing platform (24) is fixed with uprights (26) on both sides. The uprights (26) are fixed with cylinders (27), and the output end of cylinders (27) is fixed with pressure plates (28). The pressure plates (28) are provided with positioning grooves (29) below them, and the positioning grooves (29) cooperate with the positioning blocks (20). A guide plate (200) is fixedly connected to the bottom of the machine base (2). A guide groove (202) is provided on the guide plate (200), and a transverse groove (201) is symmetrically provided on the guide plate (200) and below the guide groove (202).

3. The pressure resistance testing machine for a self-priming pump body according to claim 1, characterized in that, Test piece 1 (3) is fixed on the test platform (24). Guide rod 1 (32) and motor 1 (30) are fixed on test piece 1 (3). Bidirectional screw (31) rotates on test piece 1 (3). The output end of motor 1 (30) is connected to bidirectional screw (31). Claws (36) slide symmetrically on guide rod 1 (32). V-grooves (38) are symmetrically fixed on claws (36). An arc groove (37) for clamping the water outlet (14) is provided on the V-grooves (38).

4. The pressure resistance testing machine for a self-priming pump body according to claim 3, characterized in that, The test piece 1 (3) is fixed with a mounting bracket (33), a cylinder 3 (34) is fixedly connected to the mounting bracket (33), a pressure block (35) is fixedly connected to the output end of the cylinder 3 (34), a pressure rod (39) is symmetrically slidable on the test piece 1 (3), a slope block (391) is provided at the top of the pressure rod (39), the slope block (391) is connected to the mounting bracket (33) by a spring 1 (392), and a mounting rod (393) is fixedly connected to one end of the pressure rod (39). An L-shaped rod (361) is fixed to the side of the gripper (36). The top of the L-shaped rod (361) is slidably connected to the inclined surface of the inclined block (391). A detection rod (394) is slidably attached to the end of the mounting rod (393). A second spring (395) is fixed on the detection rod (394). The second spring (395) is connected to the side of the mounting rod (393). A groove (396) is fixed to one end of the detection rod (394), and an arc rod (397) is fixed to the other end. A pressure sensor for detecting internal pressure is fixed to one side of the arc rod (397).

5. A pressure resistance testing machine for a self-priming pump body according to claim 2, characterized in that, A lifting assembly (6) is fixed below the machine base (2). The lifting assembly (6) includes a base frame (61). A top roller (62) is arranged in an array on the base frame (61). A guide column (63) is fixed on the outside of the base frame (61). The guide column (63) is slidably connected to the guide groove (202). A support rod (64) rotates below the base frame (61). A support block (65) rotates at one end of the support rod (64). The support block (65) is slidably connected to the transverse groove (201).

6. The pressure resistance testing machine for a self-priming pump body according to claim 5, characterized in that, Two feeding components (7) are fixed on one side of the feeding platform (21). The feeding components (7) are fixed on the machine base (2). A cylinder four (70) is fixed on the feeding component (7). A push rod (74) is fixed to the output end of the cylinder four (70). A push block (72) is fixed to one end of the push rod (74). A driven rod (71) slides on the push rod (74). The driven rod (71) slides on the machine base (2). A push rod (76) for moving the support block (65) is fixed to one end of the driven rod (71). One side of the driven rod (71) is attached to the top block (72), and the other side is fixed with spring three (75). The output end of cylinder four (70) is fixed with a fixing block (73), and the fixing block (73) is fixedly connected to spring three (75).

7. A pressure testing machine for a self-priming pump body according to claim 1, characterized in that, The test piece 2 (4) is fixed on the test stand (24). The test piece 2 (4) includes a fixed frame (41). Guide rods 2 (43) are fixed on both sides of the fixed frame (41). A lead screw (42) rotates on the fixed frame (41). A motor 2 (44) is fixed on the fixed frame (41). The output end of the motor 2 (44) is connected to the lead screw (42). A movable frame (45) is slidably provided on the guide rods 2 (43). The movable frame (45) is threadedly connected to the lead screw (42). The top of the fixed frame (41) is fixed with a cylinder five (46), the output end of the cylinder five (46) is fixed with a sealing plate (47), an air inlet pipe (48) is fixed on one side of the sealing plate (47), an air outlet is provided below the sealing plate (47), a pressure sensor is fixed inside the air outlet, the air outlet is connected to the air inlet pipe (48), the air inlet pipe (48) is connected to an external air pump, and guide sleeves (49) are symmetrically fixed on the movable frame (45).

8. The pressure resistance testing machine for a self-priming pump body according to claim 7, characterized in that, A rectangular sleeve (400) is fixed on the movable frame (45), and two guide sleeves (49) are fixed on both sides of the rectangular sleeve (400). A spring four (401) is fixed inside the rectangular sleeve (400). A motor three is fixed on one side of the movable frame (45), and a cam (402) is fixed to the output end of the motor three.

9. A pressure testing machine for a self-priming pump body according to claim 8, characterized in that, A movable block (5) slides inside the rectangular sleeve (400). A limit rod (54) is fixed on the movable block (5). A spring (401) is sleeved on the limit rod (54). A horizontal plate (52) that cooperates with the cam (402) is fixed on one side of the movable block (5). A sliding hole (53) is provided at the bottom of the movable block (5). A movable rod (55) slides inside the rectangular sleeve (400). One end of the movable rod (55) is slidably connected to the sliding hole (53), and the other end is fixedly connected to a pressure plate (56).

10. A pressure testing machine for a self-priming pump body according to claim 9, characterized in that, The moving rod (55) is provided with a retaining ring (57), which is fixedly connected to the moving rod (55). The retaining ring (57) is attached to the lower part of the moving block (5). A U-shaped rod (58) slides inside the guide sleeve (49). A connecting block (582) is fixed at one end of the U-shaped rod (58), and a detection plate (581) is fixed at the other end. A spring five (59) is fixed inside the connecting block (582), and one end of the spring five (59) is connected to the side of the rectangular sleeve (400). The connecting block (582) has an inclined guide surface (583) on one side, and a V-shaped block (51) is fixed on one side of the moving block (5). The V-shaped block (51) is slidably connected to the inclined guide surface (583). A pressure sensor for monitoring external pressure is fixed on the side of the detection plate (581) away from the U-shaped rod (58).

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