A double-motor self-balancing water pump and a water outlet rack processing device and a processing method

Abstract

The application relates to the technical field of water pumps, and discloses a double-motor self-balancing water pump and a water outlet frame processing device. The water pump system adopts a double-motor driving structure, is arranged in series through a first pump body and a second pump body, four-stage pressurizing structures are formed by arranging positive / negative impeller groups in each pump body and cooperating with flow guides, circulating flow channels formed by cooperating with flow guide gaps realize hydraulic balance, effectively improve output lift and reduce operation vibration. The water outlet frame processing device realizes self-adaptive clamping through multiple groups of hydraulic driving rubber wheels, integrates a conical polishing wheel group and a rotary cylindrical polishing mechanism, the conical polishing wheel realizes synchronous machining of inner and outer walls through bidirectional screw rod driving, the cylindrical polishing wheel is carried on a profiling motion mechanism, and side hole full-circumferential precise polishing is completed in cooperation with a visual positioning system. Through the combination of fluid mechanics optimization and multi-station collaborative machining technology, the application improves water pump energy efficiency indexes, and solves the machining efficiency problem of complex flow channel components.

Description

Technical Field

[0001] This invention relates to the field of water pump technology, and in particular to a dual-motor self-balancing water pump and a water outlet frame processing equipment and processing method. Background Technology

[0002] A pump is a machine that transports or pressurizes fluids. In existing technology, an impeller is mounted on the pump shaft and driven by an electric motor. The axial force of a traditional pump is borne by the motor bearings. When pressurizing water, a traditional pump typically uses the positive impeller to pressurize the water and transmits the pressure through the outlet to the negative impeller. The negative impeller further pressurizes the water before it is discharged through the outlet, thus increasing the discharge head. Traditional single-motor pumps often suffer from low efficiency and unstable operation when dealing with high head requirements. A dual-motor design can increase output power through coordinated operation, but achieving effective coordination between the two motors and stable pressurization of the water flow remains a technical challenge.

[0003] Furthermore, the pump body outlet frame is difficult to machine manually due to its complex angular structure, including side holes and sharp angles. Traditional processes require specialized tools for precision work, but space constraints often necessitate prolonged manual work to ensure accuracy, resulting in significantly reduced efficiency.

[0004] To address the aforementioned problems, this invention proposes a dual-motor self-balancing water pump and a water outlet frame processing equipment and processing method. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing methods that rely on increasing the size and strength of components to increase the pump head and the difficulty in grinding the internal side holes, sharp angles, and other angular positions of the water outlet frame. Therefore, this invention proposes a dual-motor self-balancing water pump and water outlet frame processing equipment and processing method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A dual-motor self-balancing water pump includes two first motors, with a first pump body and a second pump body disposed between the two first motors. The first pump body is fixedly connected to the adjacent first motor via a first bracket, and the second pump body is fixedly connected to the adjacent first motor via a second bracket. The first pump body and the second pump body are fixedly connected to each other via a first flow guide. The first pump body and the second pump body are respectively rotatably connected by an upper pump shaft and a lower pump shaft. The first pump body and the second pump body are each provided with a first pressurizing component and a second pressurizing component for pressurizing the water. The water head can be increased by the cooperation of the first pressurizing component and the second pressurizing component in the first pump body and the second pump body. The first pump body includes an upper outer cylinder and an upper reverse outer cylinder, and the second pump body includes a lower outer cylinder and an upper reverse outer cylinder. Two first pressurizing components are located in the upper outer cylinder and the lower outer cylinder, respectively, and two second pressurizing components are located in the upper reverse outer cylinder and the lower reverse outer cylinder, respectively, for pressurizing the water. The first pressurizing component located inside the upper outer cylinder and the upper inverted outer cylinder is in conjunction with the upper pump shaft, and the first pressurizing component located inside the lower outer cylinder and the lower inverted outer cylinder is in conjunction with the lower pump shaft.

[0007] In one possible design, the first pump body further includes an inlet body and an outlet body. The two ends of the first bracket are respectively fixedly connected to the adjacent first motor and the inlet body. The side of the inlet body away from the first bracket is fixedly connected to the upper outer cylinder. The end of the upper outer cylinder away from the inlet body is fixedly connected to the outlet body. The side of the outlet body away from the upper outer cylinder is fixedly connected to the upper reverse outer cylinder. The end of the upper reverse outer cylinder away from the outlet body is fixedly connected to the first guide. The upper outer cylinder has a first flow guide gap formed by the second pressurizing component. The first flow guide gap is connected to the first flow guide and is used to inject water from the first pump body into the second pump body. The end of the first pressurizing component located in the upper outer cylinder away from the water inlet is fixed with a water outlet frame. The water outlet frame is fixedly connected to the water outlet body. The water outlet frame has multiple side holes. The water outlet body has flow guide holes, which are respectively matched with the side holes and the first flow guide gap. The first pressurizing component in the upper outer cylinder introduces pressurized water into the first flow guide gap through the side holes and the flow guide holes. The ends of the first pressurizing component in the upper outer cylinder and the second pressurizing component in the upper outer cylinder away from the water outlet frame are respectively connected to the water inlet body and the first flow guide through the water inlet guide plate. This is used to inject water from the water inlet body into the adjacent first pressurizing component for pressurization, and to discharge the water returning from the upper outer cylinder to the outside through the water outlet body after pressurization.

[0008] In one possible design, the second pump body further includes a second guide vane and a sealing seat. The lower outer cylinder is fixed between the first and second guide vanes. A first pressurizing component located inside the lower outer cylinder is fixedly connected to the first guide vane via a water inlet guide, used to inject water from the first guide gap into the first pressurizing component inside the lower outer cylinder for pressurization. The first pressurizing component inside the lower outer cylinder is fixedly connected to the second guide vane, used to inject the pressurized water into the second guide vane. A second guide gap is formed between the first pressurizing component inside the lower outer cylinder and the lower outer cylinder, and the second guide gap is connected to the second guide vane. The lower outer cylinder is fixed to the second guide vane away from the lower outer cylinder. On the side, the second pressurizing component located inside the lower outer cylinder is fixedly connected to the second flow guide, and is used to inject the pressurized water in the lower outer cylinder into the second flow guide gap through the second flow guide. A sealing seat is fixed between the lower outer cylinder and the second support. A third flow guide gap is formed between the second pressurizing component located inside the lower outer cylinder and the lower outer cylinder. The two ends of the third flow guide gap are respectively connected to the second flow guide and the second pressurizing component inside the lower outer cylinder, and are used to inject the pressurized water in the lower outer cylinder into the second flow guide. A water inlet positioner is fixed at one end of the second pressurizing component located inside the lower outer cylinder, and the water inlet positioner is located at the intersection of the third flow guide gap and the second pressurizing component inside the lower outer cylinder.

[0009] In one possible design, the first pressurizing component consists of multiple positive impellers and positive guide vanes. The positive guide vanes are fixed to the upper outer cylinder by pins. The multiple positive guide vanes are arranged sequentially from left to right and are fixedly connected. The multiple positive impellers are all fixed to the outer wall of the upper pump shaft by bolts. The positive impellers cooperate with the adjacent positive guide vanes to pressurize the water. The second pressurizing component consists of multiple negative impellers and negative guide vanes. The multiple negative guide vanes are fixed inside the upper outer cylinder by pins. The multiple negative guide vanes are arranged and fixedly connected from left to right. The multiple negative impellers are all fixed to the outer wall of the upper pump shaft by bolts. The negative impellers cooperate with the adjacent negative guide vanes to pressurize the water. One end of the upper pump shaft is fixedly connected to the output shaft of the adjacent first motor via a coupling. The upper pump shaft passes through the inlet and outlet water bodies in sequence and extends into the first guide tube in a sealed manner. One end of the lower pump shaft is fixedly connected to the output shaft of the adjacent first motor via a coupling. The lower pump shaft passes through the sealing seat and the second guide tube in a sealed manner.

[0010] A water outlet frame processing equipment is used to process the water outlet frame inside a dual-motor self-balancing water pump as described above. It includes a processing base, and one side of the processing base is provided with multiple rubber wheels for clamping the water outlet frame. The friction between the multiple rubber wheels and the water outlet frame drives the water outlet frame to rotate. The processing base has a pressure plate on one side for pressing the water outlet frame. A screw rod rotates through the pressure plate. The processing base has a relief groove. One end of the screw rod extends into the relief groove for pressing the water outlet frame by the pressure plate. A limit ring is fixed on one side of the pressure plate. The limit ring fits against the inner wall of the water outlet frame to limit the water outlet frame and increase its stability on the processing base. A rotating ring rotates between the processing base and the pressure plate to reduce the friction between the water outlet frame and the processing base when the pressure plate presses the water outlet frame, so that the water outlet frame rotates under the drive of the rubber wheel. In order to grind the sharp angles of the water outlet frame, a first grinding structure is provided in the processing seat. The first grinding structure includes two first conical grinding wheels. The two first conical grinding wheels are used to grind the sharp angles of the inner and outer walls of one side of the water outlet frame. The first grinding structure also includes a second grinding structure, which is used to grind the sharp angles of the other side of the water outlet frame. It also includes two sets of third grinding structures set in the processing base, used to grind the inner walls of multiple side holes in the water outlet frame. The third grinding structure includes a moving plate and a cylindrical grinding wheel. The top of the moving plate is provided with a groove, which can limit the movement of the cylindrical grinding wheel, thereby grinding the inner walls of the side holes.

[0011] In one possible design, the first grinding structure further includes a movable groove disposed on one side of the processing seat. A bidirectional lead screw is rotatably connected within the movable groove, with one end of the bidirectional lead screw extending to one side of the processing seat. Two first movable seats, threadedly connected to the bidirectional lead screw, are slidably connected within the movable groove. The two first movable seats are respectively located on the positive and negative thread sections of the bidirectional lead screw. A rotating shaft rotatably passes through each of the two first movable seats. Two first conical grinding wheels are respectively fixed to the top ends of the two rotating shafts. The two first movable seats drive the corresponding first conical grinding wheels to move, used for grinding the sharp angles of the inner and outer walls of the water outlet frame. Worm gears are fixed to the bottom ends of both rotating shafts. Worms are rotatably connected to the bottom of both first movable seats via U-shaped frames. The threads on the outer walls of the two worm gears are in opposite directions, and the worm gears mesh with adjacent worm gears to drive the two first... The conical grinding wheels rotate in opposite directions to drive the first conical grinding wheel to rotate for grinding. A rotating rod is rotatably connected in the moving groove. Both worm gears slide on the outer wall of the rotating rod through a sliding groove and a slider. When the first moving seat moves, the worm gears can be moved synchronously through the U-shaped frame, so that the worm gears and worm wheels are always meshed. The two first moving seats are located on both sides of the wall thickness of the water outlet frame and are symmetrically placed. Therefore, the rotation of the bidirectional screw can drive the two first moving seats to move in opposite directions. The two first conical grinding wheels can perform tool setting on the acute angle positions of the inner and outer walls of one side of the water outlet frame, which is convenient for subsequent grinding. In order to make the first conical grinding wheel rotate for tool setting and grinding, the rotating rod is driven to rotate by a rotating motor. The rotating rod drives the two worm gears to rotate. The worm gears and worm wheels cooperate to drive the corresponding rotating shafts and the first conical grinding wheels to rotate, thereby completing the subsequent tool setting and grinding.

[0012] In one possible design, the second polishing structure includes a second movable seat sliding within a movable groove. A second conical polishing wheel is fixed to the side of the second movable seat near the water outlet frame via a drive shaft, used to polish the acute angle position on the side of the water outlet frame away from the movable groove. Two synchronous pulleys are rotatably connected to the side of the second movable seat away from the second conical polishing wheel. One of the synchronous pulleys is fixedly connected to the drive shaft at one end of the second conical polishing wheel, and the other synchronous pulley is slidably connected to a rotating rod via a groove and a slider. The two synchronous pulleys are connected by a synchronous belt drive. When the rotating rod drives the first conical polishing wheel to polish the acute angle position on one side of the water outlet frame, the synchronous pulley and synchronous belt can also drive the second conical polishing wheel to polish the acute angle position on the other side of the water outlet frame. To improve grinding efficiency, a threaded rod is threadedly connected to one side of the processing seat via a base thread. One end of the threaded rod is rotatably connected to the second moving seat, which drives the second conical grinding wheel to move, thus completing the tool setting operation of the second conical grinding wheel. The rotating rod drives the second conical grinding wheel through the cooperation of a synchronous belt and two synchronous pulleys. The rotation of the threaded rod drives the second moving seat to move towards the axis of the water outlet frame, setting the tool between the second conical grinding wheel and the acute angle position at the top of the water outlet frame. When the tool setting of the second conical grinding wheel and the first conical grinding wheel is completed, the rotating motor drives the rubber wheel to rotate, and the rubber wheel drives the water outlet frame to rotate, thereby completing the grinding of the acute angle positions on both sides of the water outlet frame. The operation is extremely simple, and the grinding of multiple acute angles can be completed at one time, greatly improving grinding efficiency.

[0013] In one possible design, the third grinding structure further includes an electric push rod fixed to one side of the processing seat. The output shaft of the electric push rod is fixedly connected to a movable plate and is used to drive the movable plate to move, completing the insertion and disengagement of the cylindrical grinding wheel from the side hole. A drive shaft rotatably passes through the movable plate and is located at the center of the groove. A frame is fixedly fitted on the outer wall of the drive shaft, and a connecting rod is slidably fitted inside the frame. An mounting cylinder and a moving guide are fixed to the top and bottom ends of the connecting rod, respectively. The bottom end of the moving guide slides with the groove via a pin. The cooperation of the frame, the groove, and the movable guide seat drives the mounting cylinder to move along the trajectory of the groove. The groove mates with the side hole, allowing the cylindrical grinding wheel to grind the inner wall of the side hole as it moves along the groove. A drive motor is fixed inside the mounting cylinder, and its output shaft is fixedly connected to the cylindrical grinding wheel, causing it to rotate and complete the grinding operation as it moves within the side hole. A push plate is slidably connected inside the frame to move the connecting rod, and this push plate is located near the drive shaft. A first spring is abutted against one side by a spring seat, and the first spring abuts against the frame body. It is used to push the connecting rod to move away from the drive shaft, so that the cylindrical grinding wheel can stably fit against the inner wall of the side hole. The rubber wheel drives the water outlet frame to rotate until the center position of the inner side hole of the water outlet frame moves to the position of the drive shaft (the center position of the side hole is determined by a position sensor and a camera, which will not be described in detail here). Then the electric push rod pushes the moving plate to move towards the axis of the water outlet frame, and the cylindrical grinding wheel extends into the side hole and touches one side of the inner wall of the side hole. The cylindrical grinding wheel extends into the side hole, and the drive motor drives the cylindrical grinding wheel to rotate. Then, the drive motor drives the transmission shaft to rotate, and the transmission shaft drives the frame to rotate. The frame drives the drive motor and the moving guide seat to move through the connecting rod. With the cooperation of the return groove and the pin at the bottom of the moving guide seat, the mounting cylinder and the cylindrical grinding wheel move along the trajectory of the return groove. Since the return groove corresponds to the trajectory of the side hole, the cylindrical grinding wheel can grind the inner wall of the side hole. In addition, the connecting rod ensures that the cylindrical grinding wheel can be in close contact with the inner wall of the side hole under the action of the first spring.

[0014] In one possible design, the processing seat has multiple sliding grooves on one side, and each of the multiple sliding grooves is slidably connected to a connecting seat via a sliding groove and a slider. The rubber wheel rotates on one side of the connecting seat. The processing seat has multiple hydraulic chambers, and each of the multiple hydraulic chambers is slidably and sealed to a piston rod. One end of the piston rod extends slidably and sealed to an adjacent sliding groove and is fixedly connected to the corresponding connecting seat, for driving the connecting seat to move and clamping the rubber wheel onto the water outlet frame. The ends of the multiple hydraulic chambers that are close to each other are abutted against by a third spring via a spring seat. The multiple third springs abut against the corresponding hydraulic chambers. The inner wall of one side of the clearance groove is connected to the corresponding hydraulic chamber via multiple hoses. A sealing valve that mates with one end of a screw is slidably and sealed within the clearance groove. A plug is used to inject hydraulic oil from the relief groove into the hydraulic chamber, thereby controlling the clamping of the rubber wheel on the water outlet frame. A second spring is abutted against the side of the relief groove away from the screw via a spring seat. The second spring abuts against the relief groove and is used to drive the rubber wheel to reset and release the clamping of the water outlet frame later. The screw enters the relief groove and compresses the second spring through a sealing piston. Hydraulic oil from the relief groove is injected into the hydraulic chamber through a hose. The hydraulic chamber drives the connecting seat and the rubber wheel to move towards the central axis of the water outlet frame, ensuring the clamping stability of the rubber wheel on the water outlet frame. This allows the rubber wheel to rotate when the motor in the connecting seat drives the rubber wheel to rotate, facilitating the subsequent grinding of the acute angle positions at the bottom and top of the water outlet frame. The processing method of the water outlet frame processing equipment in this application includes the following steps: S1. Multiple sets of rubber wheels achieve adaptive clamping through hydraulic drive. The inner wall limit ring and screw cooperate to form a double positioning to ensure the axial stability of the water outlet frame during the rotation and grinding process. When the screw is screwed into the relief groove, hydraulic oil is injected into the hydraulic chamber through the sealed piston, which drives the connecting seat to move the rubber wheels to the center to achieve dynamic clamping compensation. S2, the two symmetrical first moving seats driven by the bidirectional lead screw move towards each other, and the first conical grinding wheel on it can simultaneously pre-set the sharp angles of the inner and outer walls of the water outlet frame; the first conical grinding wheel is driven to rotate by the rotating motor through the worm gear and worm wheel transmission, realizing the compound motion of tool setting and grinding, which significantly improves the processing efficiency; S3. When grinding the other side, a synchronous belt and synchronous pulley drive the second conical grinding wheel, and the radial feed of the threaded rod completes the precise tool setting; after all grinding units have completed the pre-tool setting, the rubber wheel drives the water outlet frame to rotate, so as to achieve one-time continuous grinding of the side wall and the top sharp angle. S4. Based on visual positioning technology, when the center of the side hole of the water outlet frame coincides with the drive shaft, the electric push rod pushes the cylindrical grinding wheel into the hole; the drive motor, through the frame and connecting rod mechanism, makes the cylindrical grinding wheel move along the return groove trajectory, and under the preload of the first spring, realizes full-circumference automatic contour grinding of the inner hole wall.

[0015] Beneficial effects: In this invention, a dual-motor drive is adopted: two first motors are used as power sources to drive the upper pump shaft and the lower pump shaft respectively, thereby improving the overall output power and enhancing the pump's pressurization capability.

[0016] In this invention, a dual-pump-body synergistic pressurization is adopted. The first pump body and the second pump body are connected through a flow guide. The first pressurization component and the second pressurization component are set inside to realize multi-stage pressurization of the water body and significantly improve the water head.

[0017] In this invention, a self-balancing structure is adopted, and the unique design of the flow guide gap and flow guide hole enables the water flow to form a balanced circulation in the pump body, reducing water flow pulsation and improving the stability of the pump operation.

[0018] In this invention, two sets of first pressurizing components are located in the upper outer cylinder and the lower outer cylinder, respectively, and two sets of second pressurizing components are located in the upper reverse outer cylinder and the lower reverse outer cylinder, respectively, to pressurize the water. The water can be pressurized multiple times through multiple pressurizing components, thereby increasing the head. In addition, the water flows in the first pump body and the second pump body, resulting in a smaller footprint. In this invention, two first movable seats are threadedly connected to the positive and negative thread sections of a bidirectional lead screw. Worm gears are fixed to the bottom ends of both rotating shafts, and worms are rotatably connected to the bottom of the two first movable seats. Both worms slide on the outer wall of the rotating rod. The bidirectional lead screw drives the two first movable seats to move in opposite directions, enabling tool setting at the acute angle positions of the inner and outer walls of one side of the water outlet frame, facilitating subsequent grinding. Furthermore, the rotating rod drives the two worms to rotate, and the worms, in conjunction with the worm gears, drive the corresponding rotating shafts and the first conical grinding wheel to rotate, thereby completing the subsequent tool setting and grinding, making grinding relatively easy. In this invention, a second conical grinding wheel is fixed to the side of the second movable seat near the water outlet frame via a drive shaft. Two synchronous wheels are rotatably connected to the side of the second movable seat away from the second conical grinding wheel. One of the synchronous wheels is fixedly connected to the drive shaft at one end of the second conical grinding wheel, and the other synchronous wheel is slidably connected to the rotating rod via a groove and a slider. The rotation of the threaded rod drives the second movable seat to move towards the axis of the water outlet frame, aligning the second conical grinding wheel with the acute angle position at the top of the water outlet frame. The rotating rod drives the second conical grinding wheel through the cooperation of the synchronous belt and the two synchronous wheels, thereby completing the grinding of the acute angle positions on both sides of the water outlet frame. The operation is extremely simple, and multiple acute angles can be ground at once, greatly improving grinding efficiency. In this invention, a frame is fixedly fitted onto the outer wall of the drive shaft, and a groove is provided on the top of the movable plate. A connecting rod is slidably fitted inside the frame. An mounting cylinder and a movable guide are fixed to the top and bottom of the connecting rod, respectively. The bottom of the movable guide is slidably fitted with the groove via a pin. The drive shaft drives the frame to rotate, and the frame drives the drive motor and the movable guide to move via the connecting rod. With the groove and the pin at the bottom of the movable guide engaged, the mounting cylinder and the cylindrical grinding wheel move along the trajectory of the groove. Since the groove corresponds to the trajectory of the side hole, the cylindrical grinding wheel can grind the inner wall of the side hole. In addition, the connecting rod ensures that the cylindrical grinding wheel can be tightly attached to the inner wall of the side hole under the action of the first spring.

[0019] In this invention, the dual-motor self-balancing water pump, driven by dual motors and combined with a unique pressurization and flow guiding structure, can significantly improve the water head while achieving self-balancing, reducing vibration and instability during operation, and improving the pump's operating efficiency and reliability. It is suitable for industrial scenarios with high requirements for head and stability. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of a dual-motor self-balancing water pump provided in Embodiment 1 of the present invention. Figure 2 This is a cross-sectional view of the inlet body, outlet body, first guide vane, and second guide vane of a dual-motor self-balancing water pump provided in Embodiment 1 of the present invention. Figure 3 This is a cross-sectional view of the upper outer cylinder, water outlet body, and first guide vane of a dual-motor self-balancing water pump provided in Embodiment 1 of the present invention. Figure 4 This is a cross-sectional view of the first guide tube, the lower outer cylinder, and the lower inner cylinder of a dual-motor self-balancing water pump provided in Embodiment 1 of the present invention. Figure 5 This is a three-dimensional structural schematic diagram of the water outlet frame processing equipment provided in Embodiment 1 of the present invention; Figure 6 This is a three-dimensional exploded view of the water outlet frame processing equipment provided in Embodiment 1 of the present invention; Figure 7 This is a three-dimensional cross-sectional view of the processing base of the water outlet frame processing equipment provided in Embodiment 1 of the present invention; Figure 8 This is a three-dimensional exploded structural diagram of the first movable seat, the second movable seat, and the movable groove of the water outlet frame processing equipment provided in Embodiment 1 of the present invention. Figure 9 This is a three-dimensional exploded view of the first movable seat, worm gear, and worm of the water outlet frame processing equipment provided in Embodiment 1 of the present invention; Figure 10 This is a three-dimensional exploded view of the second moving seat and synchronous wheel of the water outlet frame processing equipment provided in Embodiment 1 of the present invention; Figure 11 This is a three-dimensional exploded view of the moving plate and cylindrical grinding wheel of the water outlet rack processing equipment provided in Embodiment 1 of the present invention. Figure 12 This is a three-dimensional exploded structural diagram of the moving plate, connecting rod, and frame of the water outlet frame processing equipment provided in Embodiment 1 of the present invention. Figure 13 This is a cross-sectional view of the processing base of the water outlet frame processing equipment provided in Embodiment 2 of the present invention.

[0021] In the diagram: 1. First motor; 2. First support; 3. Water inlet; 4. Upper outer cylinder; 5. Water outlet; 6. Upper inverted outer cylinder; 7. First guide vane; 8. Lower outer cylinder; 9. Lower inverted outer cylinder; 10. Second support; 11. Sealing seat; 12. Upper pump shaft; 13. Lower pump shaft; 14. Second guide vane; 15. Positive impeller; 16. Positive guide vane; 17. Side hole; 18. Guide hole; 19. Negative impeller; 20. Negative guide vane; 21. First guide gap; 22. Water outlet frame; 23. Second guide gap; 24. Third guide gap; 25. Machining seat; 26. Rotating ring; 27. Rubber wheel; 28. Pressure plate; 29. ​​Screw; 30. Relief groove; 31. Moving groove; 32. 33. First movable seat; 34. Double-acting lead screw; 35. Rotating shaft; 36. First conical grinding wheel; 37. Worm gear; 38. Rotating rod; 39. Worm; 40. Second movable seat; 41. Synchronous pulley; 42. Threaded rod; 43. Movable plate; 44. Electric push rod; 45. Drive shaft; 46. Frame; 47. First spring; 48. Push plate; 49. Connecting rod; 50. Movable guide seat; 51. U-shaped groove; 52. Mounting cylinder; 53. Drive motor; 54. Cylindrical grinding wheel; 55. Sealing piston; 56. Second spring; 57. Sliding groove; 58. Connecting seat; 59. Hydraulic chamber; 60. Piston rod; 61. Third spring; 62. Limiting ring. Detailed Implementation

[0022] 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.

[0023] Example 1: Refer to Figure 1 and Figure 2A dual-motor self-balancing water pump, relating to the field of water pump technology, mainly includes two first motors 1, with a first pump body and a second pump body disposed between the two first motors 1. The first pump body is fixedly connected to the adjacent first motor 1 via a first bracket 2, while the second pump body is fixedly connected to the adjacent first motor 1 via a second bracket 10. The first pump body and the second pump body are fixedly connected via a first flow guide 7 to ensure smooth water flow between them.

[0024] Reference Figures 2-4 An upper pump shaft 12 and a lower pump shaft 13 rotatably pass through the first and second pump bodies, respectively. Both pump bodies contain a first pressurizing component and a second pressurizing component, the main function of which is to pressurize the water. Through the cooperation of the first and second pressurizing components within the first and second pump bodies, the water head can be significantly increased.

[0025] Reference Figures 2-4 The first pump body specifically includes an upper outer cylinder 4 and an upper reverse outer cylinder 6, while the second pump body includes a lower outer cylinder 8 and an lower reverse outer cylinder 9. The two first pressurizing components are respectively installed in the upper outer cylinder 4 and the lower outer cylinder 8, while the two second pressurizing components are respectively located in the upper reverse outer cylinder 6 and the lower reverse outer cylinder 9. Together, they complete the task of pressurizing the water.

[0026] Reference Figures 2-4 The first pressurizing component located in the upper outer cylinder 4 and the upper inner cylinder 6 is matched with the upper pump shaft 12, while the first pressurizing component located in the lower outer cylinder 8 and the lower inner cylinder 9 is matched with the lower pump shaft 13. This design ensures that the pressurizing component can efficiently utilize the power of the pump shaft to work.

[0027] Reference Figure 2 and Figure 3Furthermore, the first pump body also includes an inlet body 3 and an outlet body 5. The two ends of the first support 2 are fixedly connected to the adjacent first motor 1 and the inlet body 3, respectively. The side of the inlet body 3 away from the first support 2 is fixedly connected to the upper outer cylinder 4, and the end of the upper outer cylinder 4 away from the inlet body 3 is fixedly connected to the outlet body 5. The side of the outlet body 5 away from the upper outer cylinder 4 is fixedly connected to the upper inverted outer cylinder 6, and the end of the upper inverted outer cylinder 6 away from the outlet body 5 is fixedly connected to the first guide valve 7. Inside the upper inverted outer cylinder 6, a first guide gap 21 is formed by the second pressurizing component. This gap is connected to the first guide valve 7 and is used to inject water from the first pump body into the second pump body. An outlet frame 22 is fixedly attached to the end of the first pressurizing component located inside the upper outer cylinder 4 away from the inlet body 3, and the outlet frame 22 is fixedly connected to the outlet body 5. The outlet frame 22 has multiple side holes 17, while the outlet body 5 has guide holes 18. The guide hole 18 is respectively matched with the side hole 17 and the first guide gap 21, so that the first pressurizing component inside the upper outer cylinder 4 can put the pressurized water into the first guide gap 21 through the side hole 17 and the guide hole 18.

[0028] Reference Figures 2-4 Furthermore, the first pressurizing component located inside the upper outer cylinder 4 and the second pressurizing component located inside the upper reverse outer cylinder 6, at their ends furthest from the water outlet frame 22, are respectively connected to the water inlet body 3 and the first guide vane 7 via water inlet guide plates. This design allows water in the water inlet body 3 to be injected into the adjacent first pressurizing component for pressurization, and also allows water flowing back from the upper reverse outer cylinder 6 to be pressurized and discharged to the outside through the water outlet body 5.

[0029] Reference Figure 3 and Figure 4 The second pump body also includes a second guide vane 14 and a sealing seat 11. The lower outer cylinder 8 is fixed between the first guide vane 7 and the second guide vane 14. The first pressurizing component located inside the lower outer cylinder 8 is fixedly connected to the first guide vane 7 via a water inlet guide, and is used to inject water from the first guide gap 21 into the first pressurizing component inside the lower outer cylinder 8 for pressurization. The first pressurizing component inside the lower outer cylinder 8 is fixedly connected to the second guide vane 14 so that the pressurized water can be injected into the second guide vane 14.

[0030] Reference Figure 3 and Figure 4Inside the lower outer cylinder 8, a second flow guide gap 23 is formed between the first pressurizing component and the lower outer cylinder 8, and this gap is connected to the second flow guide 14. The reverse lower outer cylinder 9 is fixed to the side of the second flow guide 14 away from the lower outer cylinder 8. The second pressurizing component located inside the reverse lower outer cylinder 9 is fixedly connected to the second flow guide 14, and is used to inject the pressurized water inside the reverse lower outer cylinder 9 into the second flow guide gap 23 through the second flow guide 14. A sealing seat 11 is fixed between the reverse lower outer cylinder 9 and the second support 10 to ensure the sealing of the pump body. A third flow guide gap 24 is formed between the second pressurizing component located inside the reverse lower outer cylinder 9 and the reverse lower outer cylinder 9. The two ends of this gap are respectively connected to the second flow guide 14 and the second pressurizing component inside the reverse lower outer cylinder 9, and are used to inject the pressurized water inside the reverse lower outer cylinder 9 into the second flow guide 14. A water inlet positioner is also fixed at one end of the second pressurizing component located inside the lower outer cylinder 9. The water inlet positioner is located at the intersection of the third flow guide gap 24 and the second pressurizing component inside the lower outer cylinder 9 to ensure accurate water introduction.

[0031] Reference Figures 2-4 Regarding the specific structure of the pressurizing component, the first pressurizing component consists of multiple positive impellers 15 and positive guide vanes 16. The positive guide vanes 16 are fixed inside the upper outer cylinder 4 by pins, and the multiple positive guide vanes 16 are arranged sequentially from left to right and are fixedly connected. The multiple positive impellers 15 are all fixed to the outer wall of the upper pump shaft 12 by bolts, and the positive impellers 15 cooperate with adjacent positive guide vanes 16 to jointly pressurize the water. The positive guide vane 16 at one end inside the upper outer cylinder 4 is fixedly connected to the adjacent water outlet frame 22, and the negative guide vane 20 at one end inside the upper outer cylinder 6 is fixedly connected to the adjacent water outlet 5.

[0032] Reference Figures 2-4 The second pressurizing component consists of multiple negative impellers 19 and negative guide vanes 20. The multiple negative guide vanes 20 are fixed inside the upper outer cylinder 6 by pins, arranged sequentially from left to right and fixedly connected. The multiple negative impellers 19 are all fixed to the outer wall of the upper pump shaft 12 by bolts, and the negative impellers 19 cooperate with adjacent negative guide vanes 20 to pressurize the water. The positive guide vane 16 located at one end inside the lower outer cylinder 8 is fixedly connected to the adjacent second guide vane 14, and the negative guide vanes 20 located at both ends inside the lower outer cylinder 9 are fixedly connected to the adjacent second guide vane 14 and sealing seat 11, respectively.

[0033] Reference Figures 2-4In terms of power transmission, one end of the upper pump shaft 12 is fixedly connected to the output shaft of the adjacent first motor 1 via a coupling. One end of the upper pump shaft 12 sequentially passes through the inlet body 3 and the outlet body 5, and extends into the first guide vane 7. Similarly, one end of the lower pump shaft 13 is fixedly connected to the output shaft of the adjacent first motor 1 via a coupling, and one end of the lower pump shaft 13 sequentially passes through the sealing seat 11 and the second guide vane 14. Both the upper pump shaft 12 and the lower pump shaft 13 are connected to the inlet body 3, the outlet body 5, the first guide vane 7, the sealing seat 11, and the second guide vane 14 via mechanical seals.

[0034] With this structural design, the dual-motor self-balancing water pump can efficiently utilize the power of two motors and achieve efficient pressurization and head increase of the water body through the cooperation of the two-stage pump body and the pressurizing component.

[0035] The operating principle of a dual-motor self-balancing water pump: Two first motors 1 drive the upper pump shaft 12 and the lower pump shaft 13 to rotate respectively. The upper pump shaft 12 drives multiple positive impellers 15 and negative impellers 19 in the positive upper outer cylinder 4 and the negative upper outer cylinder 6 to rotate synchronously. The water in the inlet body 3 is pressurized by the cooperation of the positive impellers 15 and positive guide vanes 16 and enters the first guide gap 21 through the cooperation of the side hole 17 and the guide hole 18. Then, the water enters the positive lower outer cylinder 8 through the cooperation of the first guide 7. The lower pump shaft 13 drives multiple positive impellers 15 and negative impellers 19 in the positive lower outer cylinder 8 and the negative lower outer cylinder 9 to rotate. The positive impellers 15 and positive guide vanes 16 in the positive lower outer cylinder 8... The water is pressurized by the second guide vane 14 and injected into the third guide gap 24. The water then enters the reverse lower outer cylinder 9 through the third guide gap 24. The water is pressurized by multiple negative impellers 19 and negative guide vanes 20 in the reverse lower outer cylinder 9 and injected into the second guide gap 23 through the second guide vane 14. The water then enters the reverse upper outer cylinder 6 through the first guide vane 7. The water is further pressurized by the negative impellers 19 and negative guide vanes 20 in the reverse upper outer cylinder 6 and discharged to the outside through the outlet water body 5. The water undergoes multiple pressurizations in the positive upper outer cylinder 4, reverse upper outer cylinder 6, positive lower outer cylinder 8, and reverse lower outer cylinder 9, thereby increasing the head of the water discharge.

[0036] Reference Figure 5 and Figure 6This invention relates to the field of water pump technology and is used to process the water outlet frame 22 in a dual-motor self-balancing water pump. The processing equipment includes a processing base 25. One side of the processing base 25 is provided with multiple rubber wheels 27, which contact the outer wall of the water outlet frame 22. The friction between the rubber wheels 27 and the water outlet frame 22 drives the water outlet frame 22 to rotate around its own axis. The other side of the processing base 25 is provided with a pressure plate 28, through which a screw 29 rotatably passes. One end of the screw 29 extends threadedly into a relief groove 30 within the processing base 25. By rotating the screw 29, the pressure plate 28 can be driven to move towards the water outlet frame 22, pressing the water outlet frame 22 onto the processing base 25. A rotating ring 26 is provided between the processing seat 25 and the pressure plate 28. The rotating ring 26 can rotate around the axis of the water outlet frame 22. It is used to reduce the friction between the water outlet frame 22 and the processing seat 25 when the pressure plate 28 presses the water outlet frame 22, so as to ensure that the water outlet frame 22 can rotate smoothly under the drive of the rubber wheel 27.

[0037] Reference Figure 7 A limiting ring 62 is fixed on one side of the pressure plate 28. The limiting ring 62 fits against the inner wall of the water outlet frame 22, increasing the stability of the water outlet frame 22 on the processing seat 25.

[0038] Clamping the water outlet frame 22: Place the water outlet frame 22 on the machining base 25, rotate the screw 29, drive the pressure plate 28 to press the water outlet frame 22 onto the machining base 25, and at the same time, the limiting ring 62 fits against the inner wall of the water outlet frame 22 to increase stability.

[0039] Reference Figures 6-9A first grinding structure is provided within the processing base 25 for grinding the sharp angles of the inner and outer walls of one side of the water outlet frame 22. The first grinding structure includes a movable groove 31 located on one side of the processing base 25. A bidirectional lead screw 33 is rotatably connected within the movable groove 31, with one end extending to the outside of the processing base 25 for easy rotation by the operator. Two first movable seats 32 are slidably connected within the movable groove 31, and are threaded to the positive and negative threaded sections of the bidirectional lead screw 33, respectively. When the bidirectional lead screw 33 is rotated, the two first movable seats 32 can move towards or away from each other. A rotating shaft 34 rotatably passes through each first movable seat 32, and a first conical grinding wheel 35 is fixed to the top of the rotating shaft 34. The two first conical grinding wheels 35 are located on both sides of the wall thickness of the water outlet frame 22, respectively, for grinding the sharp angles of the inner and outer walls of one side of the water outlet frame 22. A worm gear 36 is fixed to the bottom end of the rotating shaft 34. A worm 38 is rotatably connected to the bottom of the first moving seat 32 via a U-shaped frame, and the worm 38 meshes with the worm gear 36. A rotating rod 37 is also rotatably connected inside the moving groove 31. Both worms 38 are slidably connected to the outer wall of the rotating rod 37 via sliding grooves and sliders. When the first moving seat 32 moves, the worm 38 slides on the rotating rod 37 via the U-shaped frame, so that the worm 38 and the worm gear 36 are always meshed.

[0040] The first grinding structure sets the tool: rotating the bidirectional lead screw 33 drives the two first moving seats 32 to move towards each other, so that the two first conical grinding wheels 35 contact the acute angle positions of the inner and outer walls on one side of the water outlet frame 22, respectively.

[0041] Specifically, rotating the rotating rod 37 drives the two worm gears 38 to rotate, and the worm gears 38 drive the rotating shaft 34 and the first conical grinding wheel 35 to rotate via the worm wheel 36. Since the threads on the outer walls of the two worm gears 38 are in opposite directions, the rotation directions of the two first conical grinding wheels 35 are also in opposite directions, thereby achieving opposite grinding of the acute angles of the inner and outer walls on one side of the water outlet frame 22.

[0042] Reference Figures 6-10 The first grinding structure also includes a second grinding structure for grinding the acute angle on the other side of the water outlet frame 22. The second grinding structure includes a second movable seat 39 that slides within a movable groove 31. A second conical grinding wheel 40 is fixed to the side of the second movable seat 39 closest to the water outlet frame 22 via a drive shaft, for grinding the acute angle on the side of the water outlet frame 22 away from the movable groove 31. Two synchronous pulleys 41 are rotatably connected to the side of the second movable seat 39 away from the second conical grinding wheel 40. One synchronous pulley 41 is fixedly connected to the drive shaft at one end of the second conical grinding wheel 40, and the other synchronous pulley 41 is slidably connected to the rotating rod 37 via a groove and a slider. The two synchronous pulleys 41 are connected by a synchronous belt drive. When the rotating rod 37 rotates, the second conical grinding wheel 40 can be driven to rotate via the synchronous pulleys 41 and the synchronous belt.

[0043] Reference Figure 10 One side of the machining base 25 is threaded to a base threaded rod 42, and one end of the threaded rod 42 is rotatably connected to the second movable base 39.

[0044] The second grinding structure sets the tool: rotating the threaded rod 42 drives the second moving seat 39 to move, so that the second conical grinding wheel 40 contacts the acute angle position on the other side of the water outlet frame 22.

[0045] Specifically, by rotating the threaded rod 42, the second moving seat 39 can be driven to move along the moving groove 31, thereby adjusting the position of the second conical grinding wheel 40 so that it aligns with the acute angle position on the other side of the water outlet frame 22.

[0046] Start the rotating motor to drive the rotating rod 37 to rotate. The rotating rod 37 drives the two first conical grinding wheels 35 to rotate through the worm gear 38 and worm wheel 36, and at the same time grinds the sharp angles of the inner and outer walls on one side of the water outlet frame 22.

[0047] The rotating rod 37 simultaneously drives the second conical grinding wheel 40 to rotate via the synchronous wheel 41 and the synchronous belt, grinding the acute angle on the other side of the water outlet frame 22.

[0048] During the polishing process, the friction between the rubber wheel 27 and the water outlet frame 22 drives the water outlet frame 22 to rotate slowly, so that the polishing wheel can polish the entire circumference of the water outlet frame 22 evenly.

[0049] Reference Figure 6 , Figure 11 and Figure 12 The processing equipment also includes two sets of third grinding structures installed in the processing base 25, used to grind the inner walls of multiple side holes 17 in the water outlet frame 22. The third grinding structure includes a moving plate 43 and a cylindrical grinding wheel 54. The top of the moving plate 43 is provided with a groove 51, which can limit the movement of the cylindrical grinding wheel 54, allowing the cylindrical grinding wheel 54 to move along the trajectory of the groove 51, thereby grinding the inner walls of the side holes 17.

[0050] Reference Figure 6 , Figure 11 and Figure 12The third grinding structure includes an electric push rod 44 mounted on the fixed side wall of the processing seat 25, whose output shaft is rigidly connected to the moving plate 43. When the electric push rod 44 is activated, it drives the moving plate 43 to reciprocate horizontally, realizing the insertion and disengagement of the cylindrical grinding wheel 54 into the side hole 17. The moving plate 43 has a through-hole for mounting a drive shaft 45, which rotates through the shaft via a bearing, and its axis coincides with the center line of the groove 51. A frame 46 is fixedly fitted onto the outer wall of the drive shaft 45. The frame 46 has a rectangular cross-section and a sliding channel inside that matches the connecting rod 49. The top end of the connecting rod 49 is fixed with a mounting cylinder 52, and the bottom end is fixed with a moving guide seat 50. The bottom of the moving guide seat 50 is slidably engaged with the annular guide rail of the groove 51 via a pin. When the drive shaft 45 rotates, the frame 46 drives the connecting rod 49 to move circumferentially. Under the constraint of the groove 51, the mounting cylinder 52 produces a compound motion along a preset trajectory.

[0051] Reference Figure 11 and Figure 12 A drive motor 53 is fixed inside the mounting cylinder 52, and its output shaft is keyed to the cylindrical grinding wheel 54. The drive motor 53 is designed to rotate synchronously. When the transmission shaft 45 rotates, the cylindrical grinding wheel 54 is kept to rotate autonomously by an electromagnetic coupling device or an independent drive control system. A push plate 48 is provided inside the frame 46, and a first spring 47 applies a preload between the push plate 48 and the connecting rod 49 to ensure that the cylindrical grinding wheel 54 maintains contact pressure with the inner wall of the side hole 17 at all times.

[0052] Side hole grinding: During the rotation of the water outlet frame 22, the moving plate 43 drives the cylindrical grinding wheel 54 to move along the groove 51 to grind the inner wall of the multiple side holes 17 in the water outlet frame 22.

[0053] During system initialization, the electric push rod 44 is in the retracted state, and the cylindrical grinding wheel 54 is located outside the side hole 17. The rubber wheel 27 maintains the basic clamping force under the action of the third spring 61.

[0054] When grinding is required, the center of the side hole 17 is located by the vision system, and the electric push rod 44 is controlled to push the moving plate 43 to the working position. At this time, the cylindrical grinding wheel 54 starts to rotate under the action of the drive motor 53, and the transmission shaft 45 starts to rotate synchronously, driving the mounting cylinder 52 to move along the trajectory of the groove 51, completing the full circumferential grinding of the side hole 17.

[0055] Vision System: I. Hardware Configuration The industrial camera system employs a 2D area scan camera with a resolution ≥1280×1024. Equipped with a C-mount interface, it is installed inside the protective cover on the top of the machining base 25. The lens is an FA fixed-focus lens (focal length 25mm, aperture F2.8) to ensure full circumferential coverage of the water outlet frame 22. A ring LED light source (color temperature 5500K, brightness adjustable 0-100%) is configured, using forward illumination to uniformly illuminate the inner wall of the side hole 17 through a diffuser, eliminating interference from metal reflections.

[0056] The image processing unit uses an industrial-grade control computer, equipped with an Intel Core i7-11800H processor, an NVIDIA RTX 3050Ti graphics card, 32GB of DDR4 memory, a 512GB NVMe SSD for storage, and Halcon 21.11 image processing software.

[0057] The camera communicates with the industrial computer via GigE Vision interface through Gigabit Ethernet, with a transmission frame rate of ≥30fps and a latency of ≤50ms.

[0058] II. Localization Algorithm Flow Image preprocessing included median filtering (3×3 kernels) to eliminate noise, histogram equalization to enhance contrast, and Canny edge detection (threshold 100-200) to extract side hole contours. Circular features were detected based on Hough transform, with the following parameters set: dp=1, minDist=50, param1=50, param2=30, minRadius=20, maxRadius=50.

[0059] Feature localization involves sub-pixel edge fitting of the detected circular contours and calculation of the minimum circumcircle to obtain the center coordinates of the side holes (accuracy ±0.01mm). Template matching technology is used to verify the localization accuracy, with a preset standard side hole template (512×512 pixels) and a matching score threshold ≥0.95.

[0060] III. Control System Integration The PLC communication protocol communicates with a Siemens S7-1500 PLC via TCP / IP, with IP addresses set to 192.168.0.10 (vision system) / 192.168.0.20 (PLC) and port number 502. Data exchange is in JSON format, containing the fields: { "command": "position", "x": 123.45, "y": 67.89}, with a transmission cycle of 20ms.

[0061] The collaborative control logic sends a trigger signal to the PLC's DB1.DBX0.0 address after the vision system completes positioning. Upon receiving the signal, the PLC activates the electric actuator 44 and sends a speed command (V=50mm / s) to the servo driver via the PROFINET bus. The synchronously triggered drive motor 53 starts (800rpm), and the inverter frequency is set via the Modbus RTU protocol.

[0062] IV. Anomaly Handling Mechanism The dynamic compensation algorithm automatically executes a calibration program after every 5 grinding cycles: driving the rubber wheel 27 to rotate the water outlet frame 22 180°, re-acquiring side hole images for coordinate calibration, and compensating for mechanical deformation errors. A dual-threshold warning system is set: when the positioning deviation is >0.1mm for 3 consecutive times, an audible and visual alarm is triggered, pausing operation until manual intervention. A mechanical limit switch is installed to cut off the power supply when the electric push rod 44 exceeds its travel range, preventing equipment collision.

[0063] This vision system, through a combination of high-performance hardware and intelligent algorithms, achieves precise positioning of the center of the side hole (error ≤ 0.05mm), and seamless communication with the PLC ensures the accuracy of the control timing. The dynamic compensation mechanism effectively overcomes the impact of mechanical deformation on positioning accuracy, and the anomaly handling function enhances the system's reliability, providing a stable and reliable sensing guarantee for fully automated grinding operations.

[0064] This water outlet frame processing equipment can complete the grinding of multiple sharp angles on the water outlet frame in one operation, greatly improving grinding efficiency. The position of the grinding wheel can be easily adjusted via a two-way lead screw and threaded rod, ensuring grinding accuracy. Simultaneously, the rotating ring reduces friction between the water outlet frame and the processing seat, allowing the water outlet frame to rotate smoothly under the drive of the rubber wheel, further improving grinding quality.

[0065] Example 2: Reference Figure 13 An improvement upon Embodiment 1: The worktable surface of the processing base 25 is provided with three sliding grooves 57 distributed at 120° intervals. Each sliding groove 57 is equipped with a connecting seat 58 composed of a slider guide rail assembly. A rubber wheel 27 is mounted on the outer side of the connecting seat 58, and the inner side is sealed to the hydraulic chamber 59 through a piston rod 60. A third spring 61 is provided on one side of the hydraulic chamber 59 to provide basic preload.

[0066] The clearance groove 30 adopts a ring-shaped design, and its inner side is connected to three hydraulic chambers 59 via hoses. A sealing piston 55 and a second spring 56 are installed inside the clearance groove 30. When the screw 29 is screwed into the clearance groove 30, it pushes the sealing piston 55 to compress the second spring 56, simultaneously injecting hydraulic oil into the hydraulic chambers 59. Under hydraulic pressure, the piston rod 60 pushes the connecting seat 58 to move towards the center, causing the three rubber wheels 27 to simultaneously clamp the water outlet frame 22.

[0067] When grinding the sharp angle at the end of the water outlet frame 22, the rotating screw 29 enters the relief groove 30, triggering the hydraulic mechanism to push the rubber wheel 27 to perform strong clamping. The drive motor inside the connecting seat 58 starts, driving the water outlet frame 22 to rotate, and together with the bottom grinding device, 360° processing without dead angles is achieved.

[0068] After the operation is completed, the screw 29 exits the relief groove 30, the second spring 56 pushes the sealing piston 55 to reset, the hydraulic oil in the hydraulic chamber 59 flows back, and the rubber wheel 27 returns to its initial position under the action of the third spring 61. The electric push rod 44 drives the grinding mechanism to exit the side hole 17, completing a single operation cycle.

[0069] The processing method for the water outlet frame processing equipment includes the following steps: S1. The water outlet frame 22 is placed between multiple rubber wheels 27. The multiple rubber wheels 27 can clamp and compress the water outlet frame 22, increasing the friction between the rubber wheels 27 and the water outlet frame 22. To further enhance the stable clamping performance between the rubber wheels 27 and the water outlet frame 22, a pressure plate 28 is placed over one end of the water outlet frame 22, and a limiting ring 62 abuts against the inner wall of the water outlet frame 22. Then, the screw 29 extends into the relief groove 30. The cooperation between the screw 29 and the limiting ring 62 can position the water outlet frame 22, ensuring the position of the water outlet frame 22. Stability; In addition, the screw 29 enters the relief groove 30 and squeezes the second spring 56 through the sealing piston 55. The hydraulic oil in the relief groove 30 is injected into the hydraulic chamber 59 through the hose. The hydraulic chamber 59 drives the connecting seat 58 and the rubber wheel 27 to move towards the central axis of the water outlet frame 22, which can ensure the clamping stability of the rubber wheel 27 on the water outlet frame 22. When the motor in the connecting seat 58 drives the rubber wheel 27 to rotate, the rubber wheel 27 can drive the water outlet frame 22 to rotate, which is convenient for the sharp angle position of the bottom and top of the water outlet frame 22 to be polished later. S2. When grinding the acute angle positions of the inner and outer walls on one side of the water outlet frame 22, since the two first moving seats 32 are located on both sides of the wall thickness of the water outlet frame 22 and are symmetrically placed, the rotation of the bidirectional screw 33 can drive the two first moving seats 32 to move towards each other. The two first conical grinding wheels 35 can perform tool setting on the acute angle positions of the inner and outer walls on one side of the water outlet frame 22, which is convenient for subsequent grinding. When the first conical grinding wheel 35 is close to the acute angle position of the inner and outer walls on one side of the water outlet frame 22, the first conical grinding wheel 35 is in a rotating state. In order to make the first conical grinding wheel 35 rotate for tool setting and grinding, the rotating motor drives the rotating rod 37 to rotate. The rotating rod 37 drives the two worm gears 38 to rotate. The worm gears 38 and the worm wheel 36 cooperate to drive the corresponding rotating shaft 34 and the first conical grinding wheel 35 to rotate, thereby completing the subsequent tool setting and grinding. S3. When grinding the acute angle position on the outer side of the top of the water outlet frame 22, the rotating rod 37 drives the second conical grinding wheel 40 through the cooperation of the synchronous belt and the two synchronous pulleys 41. The rotation of the threaded rod 42 drives the second moving seat 39 to move towards the axis of the water outlet frame 22, and the second conical grinding wheel 40 and the acute angle position on the top of the water outlet frame 22 are aligned. When the alignment of the second conical grinding wheel 40 and the first conical grinding wheel 35 is completed, the rotating motor drives the rubber wheel 27 to rotate. The rubber wheel 27 drives the water outlet frame 22 to rotate, thereby completing the grinding of the acute angle positions on both sides of the water outlet frame 22. The operation is extremely simple and can complete the grinding of multiple acute angles at one time, greatly improving the grinding efficiency. S4. When it is necessary to polish the inner wall of the inner hole 17 of the water outlet frame 22, the rubber wheel 27 drives the water outlet frame 22 to rotate until the center position of the inner hole 17 of the water outlet frame 22 moves to the position of the drive shaft 45 (the center position of the side hole 17 is determined by a position sensor and a camera). Then, the electric push rod 44 pushes the moving plate 43 to move towards the axis of the water outlet frame 22, and the cylindrical polishing wheel 54 extends into the side hole 17 and touches one side of the inner wall of the side hole 17 (the cylindrical polishing wheel 54 extends into the side hole 17, and the drive motor 53 drives the cylindrical polishing wheel 54 to rotate). Driven by the drive motor 53, the transmission shaft 45 rotates, which in turn drives the frame 46 to rotate. The frame 46 then moves the drive motor 53 and the moving guide seat 50 via the connecting rod 49. With the engagement of the return groove 51 and the pin at the bottom of the moving guide seat 50, the mounting cylinder 52 and the cylindrical grinding wheel 54 move along the trajectory of the return groove 51. Since the return groove 51 corresponds to the trajectory of the side hole 17, the cylindrical grinding wheel 54 can grind the inner wall of the side hole 17. In addition, the connecting rod 49 ensures that the cylindrical grinding wheel 54 can fit tightly against the inner wall of the side hole 17 under the action of the first spring 47.

[0070] However, as is well known to those skilled in the art, the working principles and wiring methods of the first motor 1, the electric push rod 44 and the drive motor 53 are commonplace and belong to conventional means or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0071] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0072] 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 dual-motor self-balancing water pump, characterized in that, It also includes two first motors (1), with a first pump body and a second pump body between the two first motors (1). The first pump body is fixedly connected to the adjacent first motor (1) through a first bracket (2), and the second pump body is fixedly connected to the adjacent first motor (1) through a second bracket (10). The first pump body and the second pump body are fixedly connected through a first guide (7). The first pump body and the second pump body are respectively rotatably connected by an upper pump shaft (12) and a lower pump shaft (13). The first pump body and the second pump body are each provided with a first pressurizing component and a second pressurizing component, which are used to pressurize the water. The water head can be increased by the cooperation of the first pressurizing component and the second pressurizing component in the first pump body and the second pump body. The first pump body includes an upper outer cylinder (4) and an upper inner cylinder (6), and the second pump body includes a lower outer cylinder (8) and an upper inner cylinder (9). Two first pressurizing components are located in the upper outer cylinder (4) and the lower outer cylinder (8), respectively, and two second pressurizing components are located in the upper inner cylinder (6) and the lower outer cylinder (9), respectively, to complete the pressurization of the water body; The first pressurizing component located inside the upper outer cylinder (4) and the upper inner cylinder (6) is in conjunction with the upper pump shaft (12), and the first pressurizing component located inside the lower outer cylinder (8) and the lower inner cylinder (9) is in conjunction with the lower pump shaft (13). The first pump body also includes an inlet body (3) and an outlet body (5). The two ends of the first bracket (2) are fixedly connected to the adjacent first motor (1) and the inlet body (3), respectively. The side of the inlet body (3) away from the first bracket (2) is fixedly connected to the upper outer cylinder (4). The end of the upper outer cylinder (4) away from the inlet body (3) is fixedly connected to the outlet body (5). The side of the outlet body (5) away from the upper outer cylinder (4) is fixedly connected to the upper reverse outer cylinder (6). The end of the upper reverse outer cylinder (6) away from the outlet body (5) is fixedly connected to the first guide (7). Among them, the upper outer cylinder (6) forms a first flow guide gap (21) through the second pressurizing component. The first flow guide gap (21) is connected to the first flow guide (7) and is used to inject water from the first pump body into the second pump body. The end of the first pressurizing component located in the upper outer cylinder (4) away from the water inlet (3) is fixed with a water outlet frame (22). The water outlet frame (22) is fixedly connected to the water outlet body (5). The water outlet frame (22) is provided with multiple side holes (17). The water outlet body (5) is provided with a flow guide hole (18). The flow guide hole (18) is connected to the side holes (17) and the first flow guide gap (21) respectively. In conjunction with the first pressurizing component inside the upper outer cylinder (4), the pressurized water enters the first guide gap (21) through the side hole (17) and the guide hole (18). The first pressurizing component inside the upper outer cylinder (4) and the second pressurizing component inside the upper reverse outer cylinder (6) are connected to the water inlet (3) and the first guide (7) respectively through the water inlet guide plate. This is used to inject the water in the water inlet (3) into the adjacent first pressurizing component for pressurization, and to discharge the water flowing back in the upper reverse outer cylinder (6) to the outside through the water outlet (5) after pressurization. The second pump body also includes a second guide (14) and a sealing seat (11). The lower outer cylinder (8) is fixed between the first guide (7) and the second guide (14). The first pressurizing component located inside the lower outer cylinder (8) is fixedly connected to the first guide (7) through the water inlet guide, and is used to inject the water in the first guide gap (21) into the first pressurizing component inside the lower outer cylinder (8) for pressurization. The first pressurizing component inside the lower outer cylinder (8) is fixedly connected to the second guide (14), and is used to inject the pressurized water into the second guide (14). A second guide gap (23) is formed between the first pressurizing component inside the lower outer cylinder (8) and the lower outer cylinder (8). The second guide gap (23) is connected to the second guide (14). The lower outer cylinder (9) is fixed on the side of the second guide (14) away from the lower outer cylinder (8). The second pressurizing component inside the lower outer cylinder (9) is fixedly connected to the second flow guide (14) and is used to inject the pressurized water in the lower outer cylinder (9) into the second flow guide gap (23) through the second flow guide (14). A sealing seat (11) is fixed between the lower outer cylinder (9) and the second support (10). A third flow guide gap (24) is formed between the second pressurizing component inside the lower outer cylinder (9) and the lower outer cylinder (9). The two ends of the third flow guide gap (24) are respectively connected to the second flow guide (14) and the second pressurizing component inside the lower outer cylinder (9) and are used to inject the pressurized water in the lower outer cylinder (9) into the second flow guide (14). A water inlet positioner is fixed at one end of the second pressurizing component inside the lower outer cylinder (9) and the water inlet positioner is located at the intersection of the third flow guide gap (24) and the second pressurizing component inside the lower outer cylinder (9).

2. The dual-motor self-balancing water pump according to claim 1, characterized in that, The first pressurizing component consists of multiple positive impellers (15) and positive guide vanes (16). The positive guide vanes (16) are fixed inside the upper outer cylinder (4) by pins. The multiple positive guide vanes (16) are arranged and fixedly connected from left to right. The multiple positive impellers (15) are all fixed to the outer wall of the upper pump shaft (12) by bolts. The positive impellers (15) cooperate with the adjacent positive guide vanes (16) to pressurize the water. The second pressurizing component consists of multiple negative impellers (19) and negative guide vanes (20). The multiple negative guide vanes (20) are fixed inside the upper outer cylinder (6) by pins. The multiple negative guide vanes (20) are arranged and fixedly connected from left to right. The multiple negative impellers (19) are all fixed to the outer wall of the upper pump shaft (12) by bolts. The negative impellers (19) cooperate with the adjacent negative guide vanes (20) to pressurize the water. One end of the upper pump shaft (12) is fixedly connected to the output shaft of the adjacent first motor (1) via a coupling. One end of the upper pump shaft (12) passes through the inlet body (3) and the outlet body (5) in sequence. One end of the upper pump shaft (12) extends into the first guide (7) in sequence. One end of the lower pump shaft (13) is fixedly connected to the output shaft of the adjacent first motor (1) via a coupling. One end of the lower pump shaft (13) passes through the sealing seat (11) and the second guide (14) in sequence.

3. A water outlet frame processing device, used to process the water outlet frame (22) inside a dual-motor self-balancing water pump as described in claim 2, characterized in that, The machine includes a processing base (25), on one side of which are provided multiple rubber wheels (27) for clamping the water outlet frame (22). The friction between the multiple rubber wheels (27) and the water outlet frame (22) drives the water outlet frame (22) to rotate. The processing seat (25) has a pressure plate (28) on one side for pressing the water outlet frame (22). A screw (29) is rotatably inserted inside the pressure plate (28). The processing seat (25) has a relief groove (30). One end of the screw (29) is threaded into the relief groove (30) for pressing the water outlet frame (22) by the pressure plate (28). A rotating ring (26) is rotatably inserted between the processing seat (25) and the pressure plate (28) for reducing the friction between the water outlet frame (22) and the processing seat (25) when the pressure plate (28) presses the water outlet frame (22), so that the water outlet frame (22) rotates under the drive of the rubber wheel (27). In order to polish the sharp angle of the water outlet frame (22), a first polishing structure is provided in the processing seat (25). The first polishing structure includes two first conical polishing wheels (35). The two first conical polishing wheels (35) are used to polish the sharp angle of the inner wall and outer wall on one side of the water outlet frame (22). The first polishing structure also includes a second polishing structure, which is used to polish the sharp angle on the other side of the water outlet frame (22). It also includes two sets of third grinding structures set in the processing seat (25) for grinding the inner walls of multiple side holes (17) in the water outlet frame (22). The third grinding structure includes a moving plate (43) and a cylindrical grinding wheel (54). The top of the moving plate (43) is provided with a groove (51). The groove (51) can limit the movement of the cylindrical grinding wheel (54) so ​​as to grind the inner walls of the side holes (17).

4. The water outlet frame processing equipment according to claim 3, characterized in that, The first grinding structure also includes a movable groove (31) disposed on one side of the processing seat (25). A bidirectional lead screw (33) is rotatably connected in the movable groove (31). One end of the bidirectional lead screw (33) extends to one side of the processing seat (25). Two first movable seats (32) are slidably connected in the movable groove (31) and threadedly connected to the bidirectional lead screw (33). The two first movable seats (32) are respectively located on the positive and negative thread sections of the bidirectional lead screw (33). A rotating shaft (34) rotatably passes through each of the two first movable seats (32). Two first conical grinding wheels (35) are respectively fixed at the top of the two rotating shafts (34). The two first movable seats (32) drive the corresponding first conical grinding wheels (35). The moving part is used to grind the sharp angles of the inner and outer walls on one side of the water outlet frame (22). The bottom ends of the two rotating shafts (34) are fixed with worm gears (36). The bottom of the two first moving seats (32) are rotatably connected to worms (38) through U-shaped frames. The worms (38) mesh with the adjacent worm gears (36) to drive the first conical grinding wheel (35) to rotate for grinding. The moving groove (31) is rotatably connected to a rotating rod (37). The two worms (38) slide on the outer wall of the rotating rod (37) through the sliding groove and the slider. When the first moving seat (32) moves, the worms (38) can be moved synchronously through the U-shaped frame so that the worms (38) and worm gears (36) are always meshed.

5. The water outlet frame processing equipment according to claim 4, characterized in that, The second polishing structure includes a second movable seat (39) that slides in the movable groove (31). A second conical polishing wheel (40) is fixed to the side of the second movable seat (39) near the water outlet frame (22) via a drive shaft. This wheel is used to polish the acute angle position of the side of the water outlet frame (22) away from the movable groove (31). Two synchronous wheels (41) are rotatably connected to the side of the second movable seat (39) away from the second conical polishing wheel (40). One of the synchronous wheels (41) is fixedly connected to the drive shaft at one end of the second conical polishing wheel (40), and the other synchronous wheel (41) is slidably connected to the rotating rod (37) via a groove and a slider. The two synchronous pulleys (41) are connected by a synchronous belt drive. When the rotating rod (37) drives the first conical grinding wheel (35) to grind the acute angle position on one side of the water outlet frame (22), the synchronous pulley (41) and the synchronous belt drive the second conical grinding wheel (40) to grind the acute angle position on the other side of the water outlet frame (22), thereby improving the grinding efficiency. One side of the processing seat (25) is connected to a threaded rod (42) through a base thread. One end of the threaded rod (42) is rotatably connected to the second moving seat (39) to drive the second conical grinding wheel (40) to move, so as to complete the tool setting operation of the second conical grinding wheel (40).

6. The water outlet frame processing equipment according to claim 5, characterized in that, The third grinding structure also includes an electric push rod (44) fixed on one side of the processing seat (25). The output shaft of the electric push rod (44) is fixedly connected to the moving plate (43) and is used to drive the moving plate (43) to move and complete the insertion and disengagement of the cylindrical grinding wheel (54) from the side hole (17). A transmission shaft (45) is rotatably passed through the moving plate (43). The transmission shaft (45) is located at the center of the groove (51). A frame (46) is fixedly sleeved on the outer wall of the transmission shaft (45). A connecting rod (49) is slidably fitted inside the frame (46). An installation cylinder (52) and a moving guide seat (50) are fixed at the top and bottom of the connecting rod (49) respectively. The bottom end of the moving guide seat (50) is slidably fitted with the groove (51) through a pin. The cooperation of the frame (46), the groove (51) and the moving guide seat (50) can drive the installation cylinder (52) to move along the trajectory of the groove (51). The groove (51) mates with the side hole (17) to allow the cylindrical grinding wheel (54) to grind the inner wall of the side hole (17) as it moves along the groove (51). A drive motor (53) is fixed inside the mounting cylinder (52), and the output shaft of the drive motor (53) is fixedly connected to the cylindrical grinding wheel (54) to ensure that the cylindrical grinding wheel (54) rotates completely as it moves within the side hole (17). In the grinding operation, a push plate (48) for pushing the connecting rod (49) is slidably connected inside the frame (46). The side of the push plate (48) near the drive shaft (45) is abutted by a first spring (47) through a spring seat. The first spring (47) abuts inside the frame (46) and is used to push the connecting rod (49) to move away from the drive shaft (45), so that the cylindrical grinding wheel (54) can stably fit against the inner wall of the side hole (17).

7. The water outlet frame processing equipment according to claim 6, characterized in that, The processing base (25) has multiple sliding grooves (57) on one side. Each of the multiple sliding grooves (57) is slidably connected to a connecting seat (58) via a sliding groove and a slider. The rubber wheel (27) rotates on one side of the connecting seat (58). The processing base (25) has multiple hydraulic chambers (59). Each of the multiple hydraulic chambers (59) is slidably connected to a piston rod (60). One end of the piston rod (60) extends slidably into the adjacent sliding groove (57) and is fixedly connected to the corresponding connecting seat (58) to drive the connecting seat (58) to move and complete the clamping of the rubber wheel (27) on the water outlet frame (22). The ends of the multiple hydraulic chambers (59) that are close to each other are abutted against by a third spring seat. A spring (61) and multiple third springs (61) abut against the corresponding hydraulic chambers (59). The inner wall of one side of the relief groove (30) is connected to the corresponding hydraulic chambers (59) through multiple hoses. A sealed piston (55) that cooperates with one end of the screw (29) is sealed and slidably connected in the relief groove (30) to inject the hydraulic oil in the relief groove (30) into the hydraulic chamber (59) to control the clamping of the rubber wheel (27) on the water outlet frame (22). A second spring (56) abuts against the side of the relief groove (30) away from the screw (29) through a spring seat. The second spring (56) abuts against the relief groove (30) and is used to drive the rubber wheel (27) to reset and release the clamping of the water outlet frame (22) in the later stage.

8. A processing method for a water outlet frame processing device, applied to the water outlet frame processing device as described in claim 7, characterized in that, Includes the following steps: S1. Multiple sets of rubber wheels (27) achieve adaptive clamping through hydraulic drive. Their inner wall limiting ring (62) cooperates with the screw (29) to form a double positioning, ensuring the axial stability of the water outlet frame (22) during the rotation and grinding process. When the screw is screwed into the relief groove (30), the hydraulic oil is injected into the hydraulic chamber (59) through the sealing piston (55), which drives the connecting seat (58) to drive the rubber wheels (27) to retract towards the center, realizing dynamic clamping compensation. S2, the two-way lead screw (33) drives the two symmetrical first moving seats (32) to move towards each other. The first conical grinding wheel (35) mounted on it can simultaneously pre-set the sharp angles of the inner and outer walls of the water outlet frame (22). The first conical grinding wheel (35) is driven to rotate by the rotating motor through the worm gear (38) and worm wheel (36) to realize the composite motion of tool setting and grinding, which significantly improves the processing efficiency. S3. When grinding the other side, a synchronous belt and synchronous wheel (41) are used to drive the second conical grinding wheel (40), and the threaded rod (42) is used for radial feed to complete the precise tool setting. After all grinding units have completed the pre-tool setting, the rubber wheel (27) drives the water outlet frame (22) to rotate, so as to achieve one-time continuous grinding of the side wall and the top sharp angle. S4. Based on visual positioning technology, when the center of the inner hole (17) of the water outlet frame (22) coincides with the drive shaft (45), the electric push rod (44) pushes the cylindrical grinding wheel (54) into the hole; the drive motor (53) through the frame (46) and connecting rod (49) mechanism, makes the cylindrical grinding wheel (54) move along the trajectory of the groove (51), and under the pre-tightening force of the first spring (47), the full-circumference automatic contour grinding of the inner hole wall is realized.

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