A water pump leak detection system and method

Abstract

The application belongs to the technical field of water pump leakproofness detection, and particularly relates to a water pump leakproofness detection system and a detection method, which comprise a supporting mechanism, and the top of the supporting mechanism is respectively provided with a conveying mechanism, an intermittent mechanism, a clamping positioning mechanism, a sealing mechanism and a leakproofness detection mechanism, and the supporting mechanism realizes supporting operation of the conveying mechanism, the intermittent mechanism, the clamping positioning mechanism, the sealing mechanism and the leakproofness detection mechanism. The water pump leakproofness detection system and the detection method realize quick installation and fixing in water pump detection through the clamping positioning mechanism, are simple to operate, enhance the installation efficiency, reduce the operation difficulty of workers, realize quick sealing operation through the sealing mechanism, have strong sealing effect, can also realize sealing operation when the inner wall of the sealing end of the water pump is irregular, prevent air leakage from causing detection failure and affecting the qualified rate of products, thereby enhancing the detection efficiency, reducing the influence caused by the inflow of unqualified products into the market, and having high automation degree in the whole detection process.

Description

Technical Field

[0001] This invention relates to the field of water pump tightness testing technology, and in particular to a water pump tightness testing system and testing method. Background Technology

[0002] A water pump is a machine that transports or pressurizes liquids. It transfers the mechanical energy of a prime mover or other external energy to the liquid, increasing its energy. It is mainly used to transport liquids including water, oil, acids and alkalis, emulsions, suspensions, and liquid metals. It can also transport mixtures of liquids and gases, as well as liquids containing suspended solids. Technical parameters of water pump performance include flow rate, suction head, discharge head, shaft power, water power, and efficiency. Based on different working principles, they can be classified into positive displacement pumps, centrifugal pumps, etc. Positive displacement pumps transfer energy by utilizing changes in the volume of their working chamber; centrifugal pumps transfer energy by utilizing the interaction between rotating blades and water, and include centrifugal pumps, axial flow pumps, and mixed flow pumps.

[0003] Currently, all water pumps undergo airtightness testing after manufacturing to determine their quality. However, existing methods rely on sealing rings to control the sealing of the pump's ports, inlet pipes, and outlet pipes. Due to the irregularities within the pump's ports, inlet pipes, and outlet pipes, the sealing effect is poor. This poor sealing leads to low accuracy in airtightness testing, causing qualified products to be judged as unqualified, resulting in wasted costs. Furthermore, the testing is done manually, one by one, which is inefficient and lacks automation. Therefore, a water pump airtightness testing system and method are needed. Summary of the Invention

[0004] Based on existing technical problems, this invention proposes a water pump tightness testing system and testing method.

[0005] The present invention proposes a water pump tightness testing system and testing method, including a support mechanism. The top of the support mechanism is respectively provided with a conveying mechanism, an intermittent mechanism, a clamping and positioning mechanism, a sealing mechanism and a tightness testing mechanism. The support mechanism realizes the support operation of the conveying mechanism, the intermittent mechanism, the clamping and positioning mechanism, the sealing mechanism and the tightness testing mechanism.

[0006] The conveying mechanism enables the water pump installed and fixed inside the clamping and positioning mechanism to automatically transport the water to the sealed detection mechanism for detection.

[0007] The intermittent mechanism enables the intermittent conveying operation of the conveying mechanism;

[0008] The clamping and positioning mechanism enables rapid positioning and clamping of the water pump, and multiple clamping and positioning mechanisms are linearly arranged on the conveying mechanism.

[0009] The sealing mechanism enables the sealing operation during the water pump sealing test.

[0010] The sealed detection mechanism enables the water pump to perform sealed detection operations during intermittent delivery.

[0011] Preferably, the support mechanism includes support columns and connecting horizontal plates. At least four support columns are provided, with each pair of support columns respectively located at both ends of the connecting horizontal plate and fixedly installed to the bottom end of the connecting horizontal plate.

[0012] Preferably, the conveying mechanism includes conveying shafts and conveyor belts. The two ends of the two conveying shafts are rotatably connected to the opposite surfaces of the two connecting cross plates via bearings. Conveying rollers are fixedly installed on the arc surface of the conveying shafts, and the arc surfaces of the two conveying rollers are drive-connected to the inner wall of the conveyor belt.

[0013] Preferably, the intermittent mechanism includes a drive shaft and a drive lever. A first drive motor is fixedly mounted on the surface of the connecting cross plate near the drive lever. The output shaft of the first drive motor is fixedly mounted with a lever shaft via a coupling. A lever disc is fixedly mounted on one end of the lever shaft. The surface of the lever disc is fixedly mounted to the surface of the drive lever. One end of the drive shaft is fixedly mounted to a surface opposite to the conveying shaft. An intermittent drive disc is fixedly mounted on the other end of the drive shaft. The intermittent drive disc and the drive lever operate intermittently.

[0014] Preferably, the clamping and positioning mechanism includes a positioning clamping frame and a magnetic suction plate. The mounting surfaces of the plurality of positioning clamping frames are fixedly installed to the surface of the conveyor belt. The inner bottom wall of the positioning clamping frame is provided with a mounting groove. The inner wall of the mounting groove is fixedly installed to the surface of the magnetic suction plate. The inner walls of the top two sides of the positioning clamping frame are rotatably connected to a pin shaft through a bearing. A hinged magnetic plate is fixedly installed on the arc surface of the pin shaft. The hinged magnetic plate is located above the magnetic suction plate. A water pump is installed between the hinged magnetic plate and the magnetic suction plate.

[0015] Preferably, a magnetic force generating box is fixedly installed on the top of the hinged magnetic plate, a magnetic force shaft is fixedly installed on the inner bottom wall of the magnetic force generating box, a magnetic force coil is fixedly installed on the arc surface of the magnetic force shaft, copper wire is wound on the surface of the magnetic force coil, and a limit plate is fixedly installed in the middle of the inner bottom wall of the positioning clamping frame.

[0016] Preferably, an annular insulating ring is fixedly installed on one end surface of the conveyor belt, a conductive ring groove is formed on one side surface of the annular insulating ring, a conductive ring is fixedly installed on the inner wall of the conductive ring groove, a carbon brush mounting seat is fixedly installed on the surface of the connecting cross plate near the conductive ring, a carbon brush is fixedly installed inside the carbon brush mounting seat, the conductive end of the carbon brush is electrically connected to the surface of the conductive ring, a switch is respectively provided on the top of one end of each positioning clamping frame, multiple switches are electrically connected to the conductive ring through a controller, and each switch is electrically connected to a corresponding copper wire.

[0017] Preferably, the sealing mechanism includes a first U-shaped seat and a first cylinder. The two U-shaped ends of the first U-shaped seat are fixedly installed to the tops of the two connecting cross plates, respectively. The mounting surface of the first cylinder is fixedly installed to the inner top wall of the first U-shaped seat. A second U-shaped seat is fixedly installed at the telescopic bottom end of the first cylinder. A rotating shaft is rotatably connected to the lower inner walls of both sides of the second U-shaped seat via bearings. A second drive motor is fixedly installed on one side of the second U-shaped seat. The output shaft of the second drive motor is fixedly installed to the opposite surface of the rotating shaft via a coupling. The two ends of the rotating shaft are respectively provided with a left-hand thread and a right-hand thread. The surface of the left-hand thread... A left drive block is connected to the surface thread of the right-hand thread, and a right drive block is connected to the surface thread of the right-hand thread. A first plug is fixedly installed at the bottom of both the left and right drive blocks. A first plug shaft is fixedly connected to one side of the first plug block. A first airbag is fixedly installed on the arc surface of the first plug shaft. A first air inlet is opened at one end of the first plug shaft and one end of the first plug block. A first air inlet pipe is fixedly installed on the inner wall of the first air inlet. A first valve is provided on the surface of the first air inlet pipe. The air inlet end of the first air inlet pipe is fixedly connected to the air outlet end of the air pump. The two first plug shafts are located inside the through hole of the water pump and inside the water inlet pipe, respectively.

[0018] Preferably, the sealing detection mechanism includes a connecting plate and a second cylinder. One end of the connecting plate is fixedly installed on the opposite surface of the second U-shaped seat, and the top of the connecting plate is fixedly installed on the mounting surface of the second cylinder. A third U-shaped seat is fixedly installed at the telescopic bottom end of the second cylinder. A second blocking block is fixedly installed at the bottom of both ends of the U-shaped third U-shaped seat. A second blocking shaft is fixedly installed at the bottom of the second blocking block. A second air inlet is opened on the surface of the second blocking shaft. The second air inlet is fixedly connected to the inside of the water outlet pipe of the water pump. A second air bladder is fixedly installed on the arc surface of the second blocking shaft, and a second valve is provided at the bottom end of the second blocking shaft. A second air inlet pipe is fixedly installed on the inner top wall of the second air inlet. A third valve and a pressure gauge are respectively provided on the surface of the second air inlet pipe. The pressure gauge is located at the bottom of the third valve.

[0019] The beneficial effects of this invention are as follows:

[0020] By setting up a clamping and positioning mechanism, the pump can be quickly installed and fixed during testing. The operation is simple, which improves the efficiency of installation and reduces the difficulty of operation for workers. The sealing mechanism enables rapid sealing operation with strong sealing effect. It can also seal the pump even when the inner wall of the sealing end is irregular, preventing air leakage that could lead to testing errors and affect the product pass rate. This improves testing efficiency and reduces the impact of defective products entering the market. The entire testing process is highly automated, requiring only one worker for loading and unloading, or existing robotic arms can be used for loading and unloading operations, thus reducing testing costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a water pump tightness testing system and testing method.

[0022] Figure 2 A perspective view of the sealing mechanism of a water pump tightness testing system and testing method;

[0023] Figure 3 An exploded view of the clamping and positioning mechanism of a water pump tightness testing system and testing method;

[0024] Figure 4 A three-dimensional view of an intermittent mechanism for a water pump tightness testing system and method;

[0025] Figure 5 A perspective view of the support mechanism for a water pump tightness testing system and testing method;

[0026] Figure 6 A perspective view of the clamping and positioning mechanism of a water pump tightness testing system and testing method;

[0027] Figure 7 A cross-sectional view of the positioning and clamping frame structure of a water pump tightness testing system and testing method;

[0028] Figure 8 A cross-sectional view of the first block structure in a water pump tightness testing system and method;

[0029] Figure 9 A water pump tightness testing system and testing method Figure 6 Enlarged view of the structure at point A in the middle;

[0030] Figure 10 A water pump tightness testing system and testing method Figure 8 Enlarged view of the structure at point B in the middle;

[0031] Figure 11 A water pump tightness testing system and testing method Figure 7Enlarged view of the structure at point C.

[0032] In the diagram: 1. Support mechanism; 11. Support column; 12. Connecting horizontal plate; 2. Conveying mechanism; 21. Conveying shaft; 22. Conveying belt; 23. Conveying roller; 3. Intermittent mechanism; 31. Drive shaft; 32. Drive lever; 33. First drive motor; 34. Lever shaft; 35. Lever disc; 36. Drive intermittent disc; 4. Clamping and positioning mechanism; 41. Positioning and clamping frame; 42. Magnetic suction plate; 43. Mounting groove; 44. Pin shaft; 45. Hinge magnetic plate; 46. Magnetic generating box; 47. Magnetic shaft; 48. Magnetic coil; 49. Copper wire; 410. Limiting plate; 411. Annular insulating ring; 412. Conductive ring groove; 413. Conductive ring; 414. Carbon brush mounting base; 15. Carbon brush; 416. Switch; 5. Sealing mechanism; 51. First U-shaped seat; 52. First cylinder; 53. Second U-shaped seat; 54. Rotating shaft; 55. Second drive motor; 56. Left drive block; 57. Right drive block; 58. First blocking block; 59. First blocking shaft; 510. First airbag; 511. First air inlet; 512. First air inlet pipe; 513. First valve; 6. Sealing detection mechanism; 61. Connecting plate; 62. Second cylinder; 63. Third U-shaped seat; 64. Second blocking block; 65. Second blocking shaft; 66. Second air inlet; 67. Second airbag; 68. Second valve; 69. Second air inlet pipe; 610. Third valve; 611. Pressure gauge. Detailed Implementation

[0033] 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.

[0034] Reference Figure 1-11 A water pump tightness testing system and testing method are disclosed, comprising a support mechanism 1. The top of the support mechanism 1 is respectively provided with a conveying mechanism 2, an intermittent mechanism 3, a clamping and positioning mechanism 4, a sealing mechanism 5 and a tightness testing mechanism 6. The support mechanism 1 supports the conveying mechanism 2, the intermittent mechanism 3, the clamping and positioning mechanism 4, the sealing mechanism 5 and the tightness testing mechanism 6.

[0035] The support mechanism 1 includes support columns 11 and connecting horizontal plates 12. At least four support columns 11 are provided, and every two support columns 11 are respectively provided at both ends of the connecting horizontal plates 12 and are fixedly installed to the bottom end of the connecting horizontal plates 12.

[0036] In use, the effect of supporting multiple mechanisms is achieved by setting support mechanism 1.

[0037] Among them, the conveying mechanism 2 realizes the automatic delivery of water pump installed and fixed inside the clamping and positioning mechanism 4 to the sealed detection mechanism 6 for detection operation.

[0038] The conveying mechanism 2 includes a conveying shaft 21 and a conveying belt 22. The two ends of the two conveying shafts 21 are rotatably connected to the opposite surfaces of the two connecting cross plates 12 through bearings. Conveying rollers 23 are fixedly installed on the arc surface of the conveying shafts 21. The arc surfaces of the two conveying rollers 23 are connected to the inner wall of the conveying belt 22 through transmission.

[0039] During use, the water pump is automatically moved and transported during testing by the conveying mechanism 2, so that the water pump can directly enter the testing stage after production, thus enhancing the testing efficiency.

[0040] The intermittent mechanism 3 enables the intermittent conveying operation of the conveying mechanism 2. The intermittent mechanism 3 includes a drive shaft 31 and a drive lever 32. A first drive motor 33 is fixedly installed on the surface of the connecting plate 12 near the drive lever 32. The output shaft of the first drive motor 33 is fixedly installed with a lever shaft 34 through a coupling. A lever disc 35 is fixedly installed at one end of the lever shaft 34. The surface of the lever disc 35 is fixedly installed with the surface of the drive lever 32. One end of the drive shaft 31 is fixedly installed with the surface opposite to the conveying shaft 21. A drive intermittent disc 36 is fixedly installed at the other end of the drive shaft 31. The drive intermittent disc 36 and the drive lever 32 operate intermittently.

[0041] In use, the gap mechanism controls the water pump's intermittent conveying movement, which is convenient for use with the sealing detection mechanism 6. The sealing detection effect is achieved by stopping the conveying during the conveying process, making the detection continuous and enhancing the detection efficiency.

[0042] The clamping and positioning mechanism 4 enables rapid positioning and clamping of the water pump. Multiple clamping and positioning mechanisms 4 are linearly arranged on the conveying mechanism 2. The clamping and positioning mechanism 4 includes a positioning clamping frame 41 and a magnetic suction plate 42. The mounting surfaces of multiple positioning clamping frames 41 are fixedly installed on the surface of the conveyor belt 22. The inner bottom wall of the positioning clamping frame 41 is provided with a mounting groove 43. The inner wall of the mounting groove 43 is fixedly installed on the surface of the magnetic suction plate 42. The inner walls on both sides of the top of the positioning clamping frame 41 are rotatably connected to the pins 44 through bearings. The arc surface of the pins 44 is fixedly installed with a hinged magnetic plate 45. The hinged magnetic plate 45 is located above the magnetic suction plate 42. The water pump is installed between the hinged magnetic plate 45 and the magnetic suction plate 42.

[0043] In use, the hinged magnetic plate 45 is driven to rotate during the installation of the water pump by the pin 44, thereby placing the water pump between the hinged magnetic plate 45 and the magnetic suction plate 42. The magnetic force is used to control the hinged magnetic plate 45 to attract the magnetic suction plate 42, thereby squeezing the water pump to achieve the effect of quick installation and fixation.

[0044] A magnetic force generating box 46 is fixedly installed on the top of the hinged magnetic plate 45. A magnetic force generating box 46 is fixedly installed on the inner bottom wall of the magnetic force generating box 46. A magnetic force coil 48 is fixedly installed on the arc surface of the magnetic force shaft 47. Copper wire 49 is wound on the surface of the magnetic force coil 48. A limit plate 410 is fixedly installed in the middle of the inner bottom wall of the positioning clamping frame 41.

[0045] In use, the copper wire 49 is energized to generate magnetic force, which is then transmitted to the hinged magnetic plate 45 to attract the magnetic suction plate 42.

[0046] An annular insulating ring 411 is fixedly installed on one end surface of the conveyor belt 22. A conductive ring groove 412 is opened on one side surface of the annular insulating ring 411. A conductive ring 413 is fixedly installed on the inner wall of the conductive ring groove 412. A carbon brush mounting seat 414 is fixedly installed on the surface of the connecting cross plate 12 near the conductive ring 413. A carbon brush 415 is fixedly installed inside the carbon brush mounting seat 414. The conductive end of the carbon brush 415 is electrically connected to the surface of the conductive ring 413. A switch 416 is respectively provided on the top of one end of each positioning clamping frame 41. Multiple switches 416 are electrically connected to the conductive ring 413 through a controller. Each switch 416 is electrically connected to the corresponding copper wire 49.

[0047] In use, the carbon brush 415 is used to conduct electricity. One end of the carbon brush 415 slides and conducts electricity on the surface of the conductive ring 413. Multiple switches 416 are connected to the conductive ring 413 to conduct electricity, thus avoiding the effect of wired connection causing wire tangling.

[0048] The sealing mechanism 5 performs the sealing operation during the water pump sealing test. The sealing mechanism 5 includes a first U-shaped seat 51 and a first cylinder 52. The two U-shaped ends of the first U-shaped seat 51 are fixedly installed to the tops of two connecting horizontal plates 12, respectively. The mounting surface of the first cylinder 52 is fixedly installed to the inner top wall of the first U-shaped seat 51. A second U-shaped seat 53 is fixedly installed at the telescopic bottom end of the first cylinder 52. A rotating shaft 54 ​​is rotatably connected to the lower inner walls of the second U-shaped seat 53 via bearings. A second drive motor 55 is fixedly installed on one side of the second U-shaped seat 53. The output shaft of the second drive motor 55 is fixedly installed to the opposing surface of the rotating shaft 54 ​​via a coupling. The two ends of the rotating shaft 54 ​​are respectively provided with a left-hand thread and a right-hand thread. A left drive block 56 is connected to the surface thread, and a right drive block 57 is connected to the surface thread with a right-hand thread. A first block 58 is fixedly installed at the bottom of both the left drive block 56 and the bottom of the right drive block 57. A first plug shaft 59 is fixedly connected to one side of the first plug block 58. A first airbag 510 is fixedly installed on the arc surface of the first plug shaft 59. A first air inlet 511 is opened at one end of the first plug shaft 59 and one end of the first plug block 58. A first air inlet pipe 512 is fixedly installed on the inner wall of the first air inlet 511. A first valve 513 is provided on the surface of the first air inlet pipe 512. The air inlet end of the first air inlet pipe 512 is fixedly connected to the air outlet end of the air pump. The two first plug shafts 59 are located inside the through hole of the water pump and inside the water inlet pipe, respectively.

[0049] During use, when controlling the sealing of the water pump's through hole, inlet pipe, and outlet pipe, the first plug shaft 59 and the second plug shaft 65 are controlled to enter the interior of the through hole, inlet pipe, and outlet pipe. The air pressure input controls the expansion movement of the first airbag 510 and the second airbag 67, which compress the inner wall to achieve a sealing effect. This avoids the poor sealing effect caused by irregular sealing rings, which leads to water pump sealing detection errors, low detection efficiency, and low product qualification rate when the sealing effect is poor.

[0050] The sealing detection mechanism 6 enables the sealing detection operation of the water pump during intermittent delivery. The sealing detection mechanism 6 includes a connecting plate 61 and a second cylinder 62. One end of the connecting plate 61 is fixedly installed on the opposite surface of the second U-shaped seat 53, and the top of the connecting plate 61 is fixedly installed on the mounting surface of the second cylinder 62. A third U-shaped seat 63 is fixedly installed at the bottom of the telescopic end of the second cylinder 62. Second blocking blocks 64 are fixedly installed at the bottom of both U-shaped ends of the third U-shaped seat 63. The bottom of each second blocking block 64 is fixedly equipped with... The second plug shaft 65 has a second air inlet 66 on its surface, which is fixedly connected to the water outlet pipe of the water pump. A second air bag 67 is fixedly installed on the arc surface of the second plug shaft 65, and a second valve 68 is provided at the bottom end of the second plug shaft 65. A second air inlet pipe 69 is fixedly installed on the inner top wall of the second air inlet 66. A third valve 610 and a pressure gauge 611 are respectively provided on the surface of the second air inlet pipe 69, with the pressure gauge 611 located at the bottom of the third valve 610.

[0051] During use, air pressure is introduced into the water pump, and the pressure change is observed using pressure gauge 611 to determine whether it is qualified. This avoids the existing method of using water pressure for testing, prevents rust and damage when water pressure enters, and also prevents air leakage and failure to detect when the second air bag 67 has not yet inflated during operation.

[0052] By setting up the clamping and positioning mechanism 4, the water pump can be quickly installed and fixed during testing. The operation is simple, which enhances the efficiency of installation and reduces the difficulty of operation for the staff. The sealing mechanism 5 enables rapid sealing operation with strong sealing effect. It can also seal the water pump even when the inner wall of the sealing end is irregular, preventing air leakage from causing testing errors and affecting the product pass rate. This enhances the efficiency of testing and reduces the impact of unqualified products entering the market. The entire testing process is highly automated, requiring only one person to load and unload materials, or existing robotic arms can be used for loading and unloading operations, thereby reducing testing costs.

[0053] Working principle: Step 1, during operation, the operator controls the first drive motor 33 to drive the lever shaft 34 to rotate. The rotation of the lever shaft 34 drives the drive lever 32 to rotate. The rotation of the drive lever 32 pushes the drive intermittent disk 36 to rotate, thereby driving the drive intermittent disk 36 to rotate, which in turn drives the drive shaft 31 to rotate, thereby controlling the rotation of the conveyor shaft 21, so that the conveyor belt 22 can work. When the drive lever 32 leaves the drive intermittent disk 36, the drive intermittent disk 36 stops working, thereby controlling the intermittent transmission motion of the conveyor belt 22.

[0054] Step 2: When the conveyor belt 22 stops intermittently, the worker takes the water pump and places it inside the positioning clamping frame 41, above the magnetic suction plate 42. The hinged magnetic plate 45 is rotated by the pin 44 to press the water pump mounting base. After installation, the switch 416 is clicked to control the connected copper wire 49 to work, and then the hinged magnetic plate 45 generates magnetic force to hold the magnetic suction plate 42, thereby pressing the water pump mounting base to install and fix it.

[0055] Step 3: When the water pump reaches below the sealing mechanism 5 during the intermittent conveying of the conveyor belt 22, the conveyor belt 22 is stationary during intermittent transmission. The first cylinder 52 extends, driving the second U-shaped seat 53 downwards. This controls the first plug shafts 59 at both ends to reach the through hole and inlet pipe positions of the water pump. The second drive motor 55 rotates, driving the rotating shaft 54. Due to the left-hand and right-hand thread configuration, the left drive block 56 and right drive block 57 on the drive surface move simultaneously during the rotation of the rotating shaft 54. As the rotating shaft 54 ​​drives the left drive block 56 and right drive block 57 to move inwards, the second plug blocks 64 at both ends press against both sides of the water pump. This controls the two first plug shafts 59 to be positioned inside the through hole and inlet pipe of the water pump, respectively, opening the first valve 5. 13. The air pressure from the control air pump enters the first airbag 510, causing it to expand and press against the inside of the water pump's through hole and the water inlet pipe to seal it. At the same time, the second cylinder 62 is driven to extend, causing the third U-shaped seat 63 to move downward, thereby causing the surface of the second block 64 to press against the surface of the water pump's outlet pipe. Simultaneously, the second plug shaft 65 moves into the inside of the outlet pipe, closing the second valve 68. The air pressure input by the air pump enters the second airbag 67, causing it to expand and press against the inside of the outlet pipe to seal it. While the air pressure is continuously input, the second valve 68 is opened to control the air pressure to enter the inside of the water pump. The air pressure inside the water pump is detected by the pressure gauge 611. When the air pressure does not change, it indicates that the water pump is sealed. When the air pressure changes too much, it indicates that the water pump is not sealed.

[0056] Step 4: After the sealing detection mechanism 6 has finished its detection, control the first blocking shaft 59 and the second blocking shaft 65 to retract and return to their original positions. The retraction of the first cylinder 52 drives the sealing mechanism 5 and the sealing detection mechanism 6 to reset, and at the same time drives the intermittent disk 36 to rotate and work, driving the tested water pump to transport forward.

[0057] Step 5: After the water pump under test leaves the sealed testing mechanism 6, the operator turns off the power supply connected by the copper wire 49 by clicking switch 416, so that the magnetic force is disconnected. Then, the hinged magnetic plate 45 can be rotated to move away from the mounting surface of the water pump, and the water pump under test can be removed.

[0058] 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 water pump tightness testing system, comprising a support mechanism (1), characterized in that: The top of the support mechanism (1) is respectively provided with a conveying mechanism (2), an intermittent mechanism (3), a clamping and positioning mechanism (4), a sealing mechanism (5) and a sealing detection mechanism (6). The support mechanism (1) realizes the support operation of the conveying mechanism (2), the intermittent mechanism (3), the clamping and positioning mechanism (4), the sealing mechanism (5) and the sealing detection mechanism (6). The conveying mechanism (2) enables the water pump installed and fixed inside the clamping and positioning mechanism (4) to automatically convey the water to the sealed detection mechanism (6) for detection operation. The intermittent mechanism (3) enables the intermittent conveying operation of the conveying mechanism (2); The clamping and positioning mechanism (4) realizes the rapid positioning and clamping operation of the water pump, and multiple clamping and positioning mechanisms (4) are linearly arranged on the conveying mechanism (2); The sealing mechanism (5) performs the sealing operation during the water pump sealing test. The sealed detection mechanism (6) enables the water pump to perform sealed detection operation during intermittent delivery; The support mechanism (1) includes support columns (11) and connecting horizontal plates (12). At least four support columns (11) are provided. Every two support columns (11) are respectively provided at both ends of the connecting horizontal plates (12) and are fixedly installed at the bottom end of the connecting horizontal plates (12). The conveying mechanism (2) includes a conveying shaft (21) and a conveying belt (22). The two ends of the two conveying shafts (21) are rotatably connected to the opposite surfaces of the two connecting cross plates (12) through bearings. The arc surface of the conveying shaft (21) is fixedly mounted with a conveying roller (23). The arc surface of the two conveying rollers (23) is connected to the inner wall of the conveying belt (22) through transmission. The clamping and positioning mechanism (4) includes a positioning clamping frame (41) and a magnetic suction plate (42). The mounting surfaces of the multiple positioning clamping frames (41) are fixedly installed on the surface of the conveyor belt (22). The inner bottom wall of the positioning clamping frame (41) is provided with a mounting groove (43). The inner wall of the mounting groove (43) is fixedly installed on the surface of the magnetic suction plate (42). The inner walls of the top two sides of the positioning clamping frame (41) are rotatably connected to a pin (44) through a bearing. A hinged magnetic plate (45) is fixedly installed on the arc surface of the pin (44). The hinged magnetic plate (45) is located above the magnetic suction plate (42). A water pump is installed between the hinged magnetic plate (45) and the magnetic suction plate (42).

2. The water pump tightness testing system according to claim 1, characterized in that: The intermittent mechanism (3) includes a drive shaft (31) and a drive lever (32). A first drive motor (33) is fixedly installed on the surface of the connecting plate (12) near the drive lever (32). The output shaft of the first drive motor (33) is fixedly installed with a lever shaft (34) via a coupling. A lever disc (35) is fixedly installed at one end of the lever shaft (34). The surface of the lever disc (35) is fixedly installed with the surface of the drive lever (32). One end of the drive shaft (31) is fixedly installed with the surface opposite to the conveying shaft (21). A drive intermittent disc (36) is fixedly installed at the other end of the drive shaft (31). The drive intermittent disc (36) and the drive lever (32) operate intermittently.

3. The water pump tightness testing system according to claim 2, characterized in that: A magnetic generating box (46) is fixedly installed on the top of the hinged magnetic plate (45). A magnetic shaft (47) is fixedly installed on the inner bottom wall of the magnetic generating box (46). A magnetic coil (48) is fixedly installed on the arc surface of the magnetic shaft (47). Copper wire (49) is wound on the surface of the magnetic coil (48). A limit plate (410) is fixedly installed in the middle of the inner bottom wall of the positioning clamping frame (41).

4. The water pump tightness testing system according to claim 3, characterized in that: An annular insulating ring (411) is fixedly installed on one end surface of the conveyor belt (22). A conductive ring groove (412) is opened on one side surface of the annular insulating ring (411). A conductive ring (413) is fixedly installed on the inner wall of the conductive ring groove (412). A carbon brush mounting seat (414) is fixedly installed on the surface of the connecting cross plate (12) near the conductive ring (413). A carbon brush (415) is fixedly installed inside the carbon brush mounting seat (414). The conductive end of the carbon brush (415) is electrically connected to the surface of the conductive ring (413). A switch (416) is respectively provided on the top of one end of each positioning clamping frame (41). Multiple switches (416) are electrically connected to the conductive ring (413) through a controller. Each switch (416) is electrically connected to the corresponding copper wire (49).

5. The water pump tightness testing system according to claim 4, characterized in that: The sealing mechanism (5) includes a first U-shaped seat (51) and a first cylinder (52). The two U-shaped ends of the first U-shaped seat (51) are fixedly installed on the tops of the two connecting cross plates (12) respectively. The mounting surface of the first cylinder (52) is fixedly installed on the inner top wall of the first U-shaped seat (51). A second U-shaped seat (53) is fixedly installed on the telescopic bottom end of the first cylinder (52). The inner walls on both sides of the lower part of the second U-shaped seat (53) are rotatably connected to a rotating shaft (54) through bearings. A second drive motor (55) is fixedly installed on one side of the second U-shaped seat (53). The output shaft of the second drive motor (55) is fixedly installed on the opposite surface of the rotating shaft (54) through a coupling. The two ends of the rotating shaft (54) are respectively provided with a left-hand thread and a right-hand thread. A left drive block is threadedly connected to the surface of the left-hand thread. (56) The right-hand threaded surface is threaded with a right drive block (57). The bottom of the left drive block (56) and the bottom of the right drive block (57) are both fixedly installed with a first block (58). The first block (58) is fixedly connected to one side of a first plug shaft (59). The arc surface of the first plug shaft (59) is fixedly installed with a first airbag (510). One end of the first plug shaft (59) and one end of the first block (58) are both provided with a first air inlet (511). The inner wall of the first air inlet (511) is fixedly installed with a first air inlet pipe (512). The surface of the first air inlet pipe (512) is provided with a first valve (513). The air inlet end of the first air inlet pipe (512) is fixedly connected to the air outlet end of the air pump. The two first plug shafts (59) are located inside the through hole of the water pump and inside the water inlet pipe, respectively.

6. The water pump tightness testing system according to claim 5, characterized in that: The airtightness detection mechanism (6) includes a connecting plate (61) and a second cylinder (62). One end of the connecting plate (61) is fixedly installed on the opposite surface of the second U-shaped seat (53). The top of the connecting plate (61) is fixedly installed on the mounting surface of the second cylinder (62). A third U-shaped seat (63) is fixedly installed at the bottom of the telescopic end of the second cylinder (62). A second blocking block (64) is fixedly installed at the bottom of both ends of the U-shape of the third U-shaped seat (63). A second blocking shaft (65) is fixedly installed at the bottom of the second blocking block (64). (65) has a second air inlet (66) on its surface. The second air inlet (66) is fixedly connected to the inside of the water outlet pipe of the water pump. The second air bag (67) is fixedly installed on the arc surface of the second plug shaft (65). The bottom end of the second plug shaft (65) is provided with a second valve (68). The inner top wall of the second air inlet (66) is fixedly installed with a second air inlet pipe (69). The surface of the second air inlet pipe (69) is respectively provided with a third valve (610) and a pressure gauge (611). The pressure gauge (611) is located at the bottom of the third valve (610).

7. The detection method of a water pump tightness detection system according to claim 6, characterized in that: Step 1: During operation, the operator controls the first drive motor (33) to drive the lever shaft (34) to rotate. The rotation of the lever shaft (34) drives the drive lever (32) to rotate. The rotation of the drive lever (32) pushes the drive intermittent disk (36) to rotate, thereby driving the drive intermittent disk (36) to rotate, driving the drive shaft (31) to rotate, and thus controlling the rotation of the conveyor shaft (21), so that the conveyor belt (22) can work. When the drive lever (32) leaves the drive intermittent disk (36), the drive intermittent disk (36) stops working, thereby controlling the intermittent transmission motion of the conveyor belt (22). Step 2: When the conveyor belt (22) stops intermittently, the worker takes the water pump and places it inside the positioning clamping frame (41), above the magnetic suction plate (42). The hinged magnetic plate (45) is rotated by the pin (44) to squeeze the water pump mounting base. After installation, the switch (416) is clicked to control the connected copper wire (49) to work, and the hinged magnetic plate (45) generates magnetic force to hold the magnetic suction plate (42), thereby squeezing the water pump mounting base to install and fix it. Step 3: When the water pump arrives below the sealing mechanism (5) during the intermittent conveying of the conveyor belt (22), the conveyor belt (22) is stationary during the intermittent transmission. The first cylinder (52) extends and drives the second U-shaped seat (53) below to move downward, thereby controlling the first plug shafts (59) at both ends to reach the position of the water pump's through hole and the water inlet pipe. By controlling the second drive motor (55) to rotate, the rotating shaft (54) is driven to rotate. With the setting of left-hand and right-hand threads, the left drive block (56) and right drive block (57) on the drive surface move simultaneously during the rotation of the rotating shaft (54). When the rotating shaft (54) drives the left drive block (56) and right drive block (57) to move inward simultaneously, the second plug blocks (64) at both ends are squeezed against both sides of the water pump, controlling the two first plug shafts (59) to be located inside the water pump's through hole and inside the water inlet pipe, respectively. Open the first valve (513) to control the air pressure of the air pump to enter the first air bag (510) so that the first air bag (510) expands and is squeezed into the through hole of the water pump and the inside of the water inlet pipe to seal it. At the same time, drive the second cylinder (62) to extend and drive the third U-shaped seat (63) to move downward, thereby driving the surface of the second block (64) to press against the surface of the water pump outlet pipe. At the same time, the second block shaft (65) comes into the inside of the outlet pipe. Close the second valve (68) and the air pressure input by the air pump enters the second air bag (67) so that the second air bag (67) expands and is squeezed into the inside of the outlet pipe to seal it. While the air pressure is continuously input, open the second valve (68) to control the air pressure to enter the inside of the water pump. Use the pressure gauge (611) to detect the air pressure inside the water pump. When the air pressure does not change, it means that the water pump is sealed. When the air pressure changes too much, the water pump is not sealed. Step 4: After the sealing detection mechanism (6) finishes its detection, control the first blocking shaft (59) and the second blocking shaft (65) to retract and return to their original positions. The retraction of the first cylinder (52) drives the sealing mechanism (5) and the sealing detection mechanism (6) to reset. At the same time, the intermittent disc (36) is driven to rotate and work, driving the tested water pump to transport forward. Step 5: After the water pump being tested leaves the sealed testing mechanism (6), the staff can turn off the power supply connected by the copper wire (49) by clicking the switch (416) to disconnect the magnetic force. Then, the hinged magnetic plate (45) can be rotated to leave the mounting surface of the water pump, and the water pump being tested can be removed.

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