Vertical water-cooling self-priming pump

Abstract

The invention relates to a vertical water-cooling self-priming pump, and belongs to the technical field of fluid conveying. Comprising an upper liquid storage cylinder and a lower liquid storage cylinder which are fixedly connected, a water inlet pipe is arranged on the rear side of the lower liquid storage cylinder, a discharge pipe is arranged on the front side of the lower liquid storage cylinder, a water outlet pipe is arranged on the front side of the upper liquid storage cylinder, and an exhaust valve is arranged at the top of the upper liquid storage cylinder; a water-cooled motor is fixedly arranged in the upper liquid storage cylinder, a multi-stage water pump is arranged in the lower liquid storage cylinder and connected with the water-cooled motor through a coupling assembly, and a supporting assembly is arranged between the water-cooled motor and the inner wall of the upper liquid storage cylinder; an overflow protection assembly is arranged at one end, away from the lower liquid storage cylinder, of the water inlet pipe; the problems that an existing self-priming pump is unstable in installation of a special-shaped motor, high in requirement for the environment of a cooling system, low in lift, unstable in long-time operation and liquid overflows when the self-priming pump is closed are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of fluid transportation, and in particular relates to a vertical water-cooled self-priming pump. Background Art

[0002] A self-priming pump is a centrifugal pump with a self-priming function. It can automatically draw liquid into the pump when it is started, without the need for pre-priming or manual exhaust. It is widely used in agricultural irrigation, industrial water supply, sewage treatment, chemical liquid transportation and other fields. Most of the existing self-priming pumps are seal-less automatic self-priming pumps. When the seal-less automatic self-priming pump is stopped, the liquid will leak out along the axis, which is particularly inconvenient in an environment with frequent starts. The impellers of the seal-less automatic self-priming pumps are all single-stage and have a low head. The motor of the seal-less automatic self-priming pump adopts a dry air-cooled motor, which is noisy and has high requirements for the installation environment. It requires a pump room or rain and dustproof measures, and the maintenance cost is high. When the seal-less automatic self-priming pump is pumping turbid liquids, the bearings will be filled with mud and sand, causing wear or noise. After using a vertical structure, some special-shaped motors are very unstable due to the large vibration caused by the centrifugal structure. Therefore, in response to the above problems, the present invention improves the existing self-priming pump. Summary of the Invention

[0003] The present invention overcomes the deficiencies of the prior art and proposes a vertical water-cooled self-priming pump; it solves the problems of the prior art self-priming pumps such as unstable installation of special-shaped motors, high requirements for the cooling system environment, low lift, unstable operation for a long time, and liquid overflow when closed.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0005] A vertical water-cooled self-priming pump comprises an upper liquid storage cylinder and a lower liquid storage cylinder which are fixedly connected, a water inlet pipe is provided on the rear side of the lower liquid storage cylinder, a discharge pipe is provided on the front side of the lower liquid storage cylinder, a water outlet pipe is provided on the front side of the upper liquid storage cylinder, and an exhaust valve is provided on the top of the upper liquid storage cylinder; a water-cooled motor is fixedly provided inside the upper liquid storage cylinder, a multi-stage water pump is provided inside the lower liquid storage cylinder, the multi-stage water pump is connected to the water-cooled motor through a coupling assembly, and a support assembly is provided between the water-cooled motor and the inner wall of the upper liquid storage cylinder; an overflow protection assembly is provided at the end of the water inlet pipe away from the lower liquid storage cylinder.

[0006] Furthermore, the lower end opening of the upper liquid storage cylinder and the upper end opening of the lower liquid storage cylinder are fixedly connected by a flange; a mounting base is fixedly provided at the lower end of the lower liquid storage cylinder; a water inlet is provided at the center of the top plate of the upper liquid storage cylinder, and a liquid storage cavity sealing cover is fixedly installed at the water inlet.

[0007] Furthermore, the water-cooled motor includes a motor housing, a water injection cylinder, a sealing cover, a snap-fit ​​seat, a water-cooling cavity shell, and a drive assembly; a water injection cylinder is fixedly provided at the upper end opening of the motor housing, and a sealing cover is fixedly provided at the upper end opening of the water injection cylinder; a snap-fit ​​seat is fixedly provided at the lower end opening of the motor housing, a water-cooling cavity shell is fixedly provided inside the motor housing, and a drive assembly is provided inside the water-cooling cavity shell.

[0008] Furthermore, the drive assembly includes a terminal board, an upper sealed winding plate, a waterproof shell, a lower sealed winding plate, a stabilizing orifice plate, wires, a rotor, and a motor shaft; a terminal board is fixedly provided at the upper end of the inner side of the water-cooling chamber shell, and the top surface of the terminal board passes through the water-cooling chamber shell, the motor shell and the upper liquid storage cylinder through a wire and is connected to the power supply equipment; a coaxial upper sealed winding plate, a waterproof shell, and a lower sealed winding plate are fixedly installed in sequence from top to bottom on the lower end surface of the terminal board; a stabilizing orifice plate is fixedly provided at the upper and lower ends of the inner side of the waterproof shell, and a plurality of wires are passed between the two stabilizing orifice plates, and the wires are wound around the upper and lower sealed winding plates; a vertical motor shaft is rotatably provided at the axis of the terminal board, the upper sealed winding plate, the waterproof shell, and the lower sealed winding plate, and a rotor is fixedly provided on the outside of the motor shaft, and the rotor is located on the inside of the waterproof shell; ball bearings are rotatably connected to the upper and lower ends of the outer side surface of the motor shaft, and the two ball bearings are respectively fixedly provided at the upper and lower ends of the inner side of the waterproof shell.

[0009] Furthermore, the coupling assembly includes a coupling frame and a return plate; a circle of return holes is provided on the return plate; the return plate is fixedly arranged between the flange of the upper liquid storage cylinder and the flange of the lower liquid storage cylinder; the coupling frame is fixedly arranged on the upper end of the return plate through the tripod at its lower end, and the coupling frame is fixed to the clamping seat.

[0010] Furthermore, the support assembly includes a support frame, a connecting rod, an adjusting screw, and a rubber pressure block; the support frame is fixedly sleeved on the outer side of the lower end opening of the water injection cylinder; a T-shaped connecting rod is fixedly provided on both sides of the support frame, and two adjusting screws are screwed on one end of the two connecting rods away from the support frame; the two adjusting screws on the same side are provided with the same rubber pressure block at one end away from the connecting rod, and the end of the adjusting screw is rotatably connected to the rubber pressure block; the two rubber pressure blocks are respectively in contact with the inner walls on both sides of the upper liquid storage cylinder.

[0011] Furthermore, the multi-stage water pump includes a water pump shaft, a wear-resistant sprue ring, a packaging base plate, a water pump casing, and a water pump unit; the upper end of the water pump shaft passes through the return plate and is fixedly connected to the lower end of the motor shaft through a coupling; a plurality of water pump casings distributed up and down are rotatably sleeved on the outside of the water pump shaft, and any two adjacent water pump casings are fixedly connected; the upper end of the uppermost water pump casing is fixedly connected to the lower end surface of the return plate, and the lower end of the lowermost water pump casing is fixedly provided with a packaging base plate; a wear-resistant sprue ring is inlaid inside the upper end opening of the uppermost water pump casing, and a water pump unit is respectively provided inside each water pump casing.

[0012] Furthermore, the water pump unit includes a guide wheel and an impeller box; the guide wheel is provided in the middle of the inner side of the water pump housing, and the guide wheel is fixed to the inner wall of the water pump housing through a circle of guide blades, and a rubber sliding bearing is inlaid on the inner wall of the guide wheel, and a copper sliding bearing is abutted against the middle of the outer side of the rubber sliding bearing, and the copper sliding bearing is inlaid on the inner wall of the guide wheel; an impeller box is provided at the lower end of the inner side of the water pump housing, and the impeller box is fixedly sleeved on the outer side of the water pump shaft through a pin shaft, and blades are fixed inside the impeller box.

[0013] Furthermore, the overflow protection assembly includes an anti-overflow pipe, a clapper, an eccentric shaft, and an air intake valve; the anti-overflow pipe is fixedly connected to the end of the water inlet pipe away from the lower liquid storage cylinder through a flange, a clapper is rotatably provided at the connection between the anti-overflow pipe and the water inlet pipe through the eccentric shaft, and an air intake valve is provided at the upper end of the anti-overflow pipe.

[0014] The beneficial effects of the present invention compared to the prior art are: The present invention facilitates better installation and stabilization of motors of different shapes through the cooperation of the coupling assembly and the support assembly, thereby improving stability and realizing the ability of the self-priming pump to freely replace the support structure and stably install it according to the shape characteristics of the motor; the water-cooled motor enables the self-priming pump to have a quieter and more stable working state, improves environmental adaptability, and realizes the ability of the self-priming pump to work in extreme environments; the multi-stage water pump enables the self-priming pump to automatically increase or decrease water pump units according to demand, broadens the application scenarios, and realizes the ability of the self-priming pump to automatically adjust the head according to demand; the cooperation of the rubber sliding bearing and the copper sliding bearing facilitates ensuring the coaxiality of the self-priming pump while ensuring the cleanliness of the water pump shaft connection, improves the coaxiality and sand resistance of the water pump shaft, and realizes the ability of the water pump unit to stably transport turbid liquid for a long time; the cooperation of the air intake valve and the clapper facilitates the automatic sealing of the flow channel when the self-priming pump is not working, improves practicality, and realizes the ability to prevent liquid overflow in the chamber; ultimately solves the problems of unstable installation of special-shaped motors, high requirements for the cooling system environment, low head, unstable long-term operation, and liquid overflow when closed in the existing self-priming pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below with reference to the accompanying drawings: Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 Schematic diagram of the internal structure of the upper liquid storage cylinder and the lower liquid storage cylinder; Figure 3 It is a schematic diagram of the connection between the water injection cylinder and the support assembly; Figure 4 It is a schematic diagram of the structure of the water-cooled motor; Figure 5 It is a schematic diagram of the structure inside the motor housing; Figure 6 It is a schematic diagram of the structure inside the water-cooling cavity shell; Figure 7 It is a schematic diagram of the structure inside the waterproof shell; Figure 8 It is a structural diagram of a multi-stage water pump; Figure 9 It is a schematic diagram of the internal structure of a multi-stage water pump; Figure 10 It is a schematic diagram of the internal structure of the water pump housing; Figure 11 is a schematic diagram of the structure of the spill protection assembly; Among them, 1 is the installation base plate, 2 is the lower liquid storage cylinder, 3 is the upper liquid storage cylinder, 4 is the water inlet pipe, 5 is the water outlet pipe, 6 is the discharge pipe, 7 is the liquid storage chamber sealing cover, 8 is the exhaust valve, 10 is the coupling frame, 11 is the return plate, 12 is the support frame, 13 is the adjusting screw, 14 is the rubber pressure block, 15 is the water injection cylinder, 16 is the sealing cover, 17 is the motor housing, 18 is the card seat, 19 is the water cooling chamber shell, 20 is the terminal board, 21 is the upper sealing winding plate, 22 is a waterproof shell, 23 is a lower sealing winding plate, 24 is a stabilizing orifice plate, 25 is an electric wire, 26 is a rotor, 27 is a motor shaft, 28 is a water pump shaft, 29 is a water pump shell, 30 is a wear-resistant water inlet ring, 31 is a guide wheel, 32 is a rubber sliding bearing, 33 is a copper sliding bearing, 34 is an impeller box, 35 is a blade, 36 is a packaging bottom plate, 37 is an anti-overflow pipe, 38 is a clapper, 39 is an eccentric shaft, and 40 is an intake valve. DETAILED DESCRIPTION

[0016] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. The technical solutions of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0017] like Figure 1As shown in FIG11 , the present invention provides a vertical water-cooled self-priming pump, comprising an upper liquid storage cylinder 3 and a lower liquid storage cylinder 2 fixedly connected, a water inlet pipe 4 is provided on the rear side of the lower liquid storage cylinder 2, a discharge pipe 6 is provided on the front side of the lower liquid storage cylinder 2, a water outlet pipe 5 is provided on the front side of the upper liquid storage cylinder 3, and an exhaust valve 8 is provided on the top of the upper liquid storage cylinder 3; a water-cooled motor is fixedly provided inside the upper liquid storage cylinder 3, a multi-stage water pump is provided inside the lower liquid storage cylinder 2, the multi-stage water pump is connected to the water-cooled motor through a coupling assembly, and a support assembly is provided between the water-cooled motor and the inner wall of the upper liquid storage cylinder 3; an overflow protection assembly is provided at the end of the water inlet pipe 4 away from the lower liquid storage cylinder 2.

[0018] The lower liquid reservoir 2 is a cylindrical structure with an open top, while the upper liquid reservoir 3 is a cylindrical structure with an open bottom. The lower opening of the upper liquid reservoir 3 is fixedly connected to the upper opening of the lower liquid reservoir 2 via a flange. A horizontal mounting base 1 is fixedly mounted at the lower end of the lower liquid reservoir 2. A water inlet is provided at the center of the top plate of the upper liquid reservoir 3, and a liquid storage chamber sealing cover 7 is fixedly mounted at the water inlet.

[0019] The water-cooled motor includes a motor housing 17, a water injection cylinder 15, a sealing cover 16, a clamping seat 18, a water-cooling cavity shell 19, and a driving assembly.

[0020] The motor housing 17 is a cylindrical structure with openings at both ends. A water injection cylinder 15 is fixedly mounted at the upper opening of the motor housing 17. The water injection cylinder 15 is a tapered structure that is thinner at the top and thicker at the bottom. The lower opening of the water injection cylinder 15 is fixedly connected to the upper opening of the motor housing 17. A sealing cover 16 is fixedly mounted at the upper opening of the water injection cylinder 15 via a circle of bolts. A snap-fit ​​seat 18 is fixedly mounted at the lower opening of the motor housing 17. A water-cooling chamber 19 is fixedly mounted inside the motor housing 17. The drive assembly is housed within the water-cooling chamber 19.

[0021] The drive assembly includes a terminal block 20, an upper sealed winding plate 21, a waterproof housing 22, a lower sealed winding plate 23, a stabilizing orifice plate 24, wires 25, a rotor 26, and a motor shaft 27. A horizontal annular terminal block 20 is fixedly installed at the upper end of the inner side of the water-cooling chamber shell 19. The top surface of the terminal block 20 passes through the water-cooling chamber shell 19, the motor housing 17, and the upper liquid storage cylinder 3 through a wire and is connected to the power supply equipment. The coaxial upper sealed winding plate 21, the waterproof housing 22, and the lower sealed winding plate 23 are fixedly installed in sequence from top to bottom on the lower end surface of the terminal block 20. Stabilizing orifice plates 24 are fixedly installed at both the upper and lower ends of the inner side of the waterproof housing 22. A plurality of wires 25 are passed between the two stabilizing orifice plates 24. The wires 25 are wound on the upper sealed winding plate 21 and the lower sealed winding plate 23. A vertical motor shaft 27 rotates along the axis of the terminal block 20, upper sealed winding plate 21, waterproof housing 22, and lower sealed winding plate 23. A rotor 26 is fixedly mounted on the outside of the motor shaft 27 and located inside the waterproof housing 22. Ball bearings are rotatably connected to the upper and lower ends of the outer side of the motor shaft 27, and the two ball bearings are fixedly mounted on the upper and lower ends of the inner side of the waterproof housing 22. During the self-priming pump's operation, the clean water inside the water-cooling chamber 19 and the fluid flowing outside the motor housing 17 are cooled, maintaining a stable and quiet operation, improving environmental adaptability.

[0022] The coupling assembly includes a coupling frame 10 and a return plate 11. The return plate 11 is a horizontally arranged circular plate structure with a circle of vertically connected return holes. The return plate 11 is fixedly mounted between the flanges of the upper liquid storage cylinder 3 and the flanges of the lower liquid storage cylinder 2. The coupling frame 10 is fixed to the upper end of the return plate 11 via a tripod at its lower end. The coupling frame 10 is fixedly engaged with the clamping seat 18.

[0023] The support assembly includes a support frame 12, a connecting rod, an adjusting screw 13, and a rubber pressure block 14. The support frame 12 is a horizontally arranged circular ring structure, and the support frame 12 is fixedly sleeved on the outer side of the lower end opening of the water injection cylinder 15. A T-shaped connecting rod is fixedly arranged on both sides of the support frame 12, and two adjusting screws 13 are screwed on the ends of the two connecting rods away from the support frame 12. The two adjusting screws 13 on the same side are provided with the same rubber pressure block 14 at the ends away from the connecting rods, and the ends of the adjusting screws 13 are rotatably connected to the rubber pressure blocks 14. The two rubber pressure blocks 14 are respectively in contact with the inner walls on both sides of the upper liquid storage cylinder 3. By rotating the two adjusting screws 13, the distance between the rubber pressure block 14 and the connecting rod on the same side can be adjusted, thereby ensuring that the rubber pressure block 14 is in stable contact with the inner wall of the upper liquid storage cylinder 3. The problem of unstable installation of the special-shaped motor is solved by the mutual cooperation of the coupling assembly and the support assembly.

[0024] The multi-stage water pump includes a water pump shaft 28, a wear-resistant sprue ring 30, a packaging base plate 36, a water pump housing 29, and a water pump unit. The water pump shaft 28 remains vertical, and the upper end of the water pump shaft 28 passes through the return plate 11 and is fixedly connected to the lower end of the motor shaft 27 via a coupling. Multiple water pump housings 29 distributed vertically are rotatably sleeved on the outside of the water pump shaft 28, and any two adjacent water pump housings 29 are fixedly connected by a circle of bolts; the upper end of the uppermost water pump housing 29 is fixedly connected to the lower end surface of the return plate 11 by a circle of bolts, and the lower end of the lowermost water pump housing 29 is fixedly provided with a packaging base plate 36 by a circle of bolts, and a water hole is provided at the center of the packaging base plate 36. A wear-resistant sprue ring 30 is embedded in the interior of the upper end opening of the uppermost water pump housing 29, and the wear-resistant sprue ring 30 is sleeved on the outside of the water pump shaft 28. A water pump unit is provided inside each water pump housing 29 , and the lift of the self-priming pump is increased by stacking the water pump units one above the other.

[0025] The water pump unit includes a guide wheel 31 and an impeller box 34. The guide wheel 31 is located in the center of the inner side of the water pump housing 29 and is fixed to the inner wall of the water pump housing 29 by a ring of guide vanes. A rubber sliding bearing 32 is embedded in the inner wall of the guide wheel 31. A bronze sliding bearing 33 abuts the center of the outer side of the rubber sliding bearing 32 and is fitted into the inner wall of the guide wheel 31. An impeller box 34 is located at the lower inner end of the water pump housing 29 and is pinned to the outer side of the water pump shaft 28. The impeller box 34 rotates synchronously with the water pump shaft 28. Blades 35 are fixed inside the impeller box 34. The guide wheel 31 creates a high-speed flow environment at the guide vanes, directing fluid upward and preventing it from eroding the water pump shaft 28. The rubber sliding bearing 32 also effectively prevents sediment from entering the bearing, thereby increasing the service life of the self-priming pump.

[0026] The overflow prevention assembly includes an overflow prevention pipe 37, a clapper 38, an eccentric shaft 39, and an air intake valve 40. The overflow prevention pipe 37 is fixedly connected to the end of the water inlet pipe 4 away from the lower liquid storage cylinder 2 via a flange. A clapper 38 is provided at the connection between the overflow prevention pipe 37 and the water inlet pipe 4. A horizontal eccentric shaft 39 is fixedly provided at the lower end of the outer side of the clapper 38. The two ends of the eccentric shaft 39 are rotatably connected to the overflow prevention pipe 37. An air intake valve 40 is provided at the upper end of the overflow prevention pipe 37. When the self-priming pump stops operating, the air intake valve 40 opens, allowing air to enter the overflow prevention pipe 37, thereby forcing the fluid in the water inlet pipe 4 back up against the clapper 38, closing the clapper 38 and preventing the fluid in the water inlet pipe 4 from leaking.

[0027] The present invention also provides a method for using a vertical water-cooled self-priming pump, comprising the following steps: Step one, first perform the installation and fixing work before the self-priming pump works. First, install the lower liquid storage cylinder 2 in the appropriate position by installing the base plate 1, pay attention to the angle of the water inlet pipe 4, and ensure that the water inlet pipe 4 can be normally connected to the pumping pipe. Then, plug the water pump shaft 28 into the combined multi-stage water pump according to the actual lift requirement, and then install and fix the overall top surface of the multi-stage water pump on the bottom surface of the return plate 11, and then cover the return plate 11 on the top surface of the lower liquid storage cylinder 2 and align the mounting holes, and then install and fix the coupling frame 10 on the top surface of the return plate 11, and then install and fix the water-cooled motor on the coupling frame 10. At this time, ensure that the motor shaft 27 and the water pump shaft 28 are rigidly connected, and then install the fixed support frame 12 on the outer side of the water injection cylinder 15, and then align the upper liquid storage cylinder 3 with the return plate 11 and sleeve it on the outer side of the water-cooled motor. During this period, pay attention to the angle of the water outlet pipe 5 to ensure that it can connect to the water pipe, then rotate the adjusting screw 13 to make the rubber pressure block 14 press the inside of the upper liquid storage cylinder 33, and finally install and fix the liquid storage chamber sealing cover 7 to complete the installation work and put it into use.

[0028] Step 2: When in use, power all electrical equipment, then open the liquid storage chamber sealing cover 7, then open the sealing cover 16, pour clean water into the water-cooling chamber shell 19, then close the sealing cover 16, and then pour clean water into the upper liquid storage cylinder 3 until the water level reaches the upper liquid storage cylinder 3, then close the liquid storage chamber sealing cover 7, and finally power on the machine. After powering on, the wire 25 is energized to generate a magnetic field, and the magnetic field drives the rotor 26 to cut the magnetic lines of force, that is, to rotate, thereby driving the motor shaft 27 to rotate.

[0029] Step three, the motor shaft 27 then drives the water pump shaft 28 to rotate, thereby rotating the impeller box 34, and the blades 35 in the impeller box 34 throw out the internal clean water to form a negative pressure, thereby sucking the fluid downward. Since there is a large amount of gas in the suction pipe, the fluid and gas are mixed together and pumped upward to the interior of the upper liquid storage cylinder 3. Due to the surge in space, the gas quickly separates from the fluid and is discharged out of the self-priming pump through the exhaust valve 8. The fluid returns to the lower liquid storage cylinder 2 through the return plate 11 to continue to participate in the exhaust work. This cycle continues until a vacuum environment is formed in the flow channel, and the fluid can fill the lower liquid storage cylinder 2 and the upper liquid storage cylinder 3 and finally be discharged outward through the water outlet pipe 5, thereby realizing the pumping function.

[0030] In step four, during the pumping process, the clean water in the water-cooling chamber shell 19 and the fluid flowing outside the motor housing 17 can be cooled down and are stable and quiet. The support frame 12 will stabilize the vibration of the water-cooled motor. The guide pulley 31 will form a high-speed flow environment at the guide blade to guide the fluid upward and prevent the fluid from scouring the water pump shaft 28. The rubber sliding bearing 32 can also effectively prevent mud and sand from entering the bearing. When the self-priming pump stops working, the air intake valve 40 opens to allow air to enter the anti-overflow pipe 37, thereby causing the fluid inside the water inlet pipe 4 to return to the top plate 38, so that the plate 38 is in a closed state to prevent the fluid inside the water inlet pipe 4 from leaking.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A vertical water-cooled self-priming pump, characterized by: The invention comprises an upper liquid storage cylinder (3) and a lower liquid storage cylinder (2) which are fixedly connected, a water inlet pipe (4) is provided on the rear side of the lower liquid storage cylinder (2), a discharge pipe (6) is provided on the front side of the lower liquid storage cylinder (2), a water outlet pipe (5) is provided on the front side of the upper liquid storage cylinder (3), and an exhaust valve (8) is provided on the top of the upper liquid storage cylinder (3); a water-cooled motor is fixedly provided inside the upper liquid storage cylinder (3), a multi-stage water pump is provided inside the lower liquid storage cylinder (2), the multi-stage water pump is connected to the water-cooled motor through a coupling assembly, and a support assembly is provided between the water-cooled motor and the inner wall of the upper liquid storage cylinder (3); and a spill protection assembly is provided at one end of the water inlet pipe (4) away from the lower liquid storage cylinder (2).

2. A vertical water-cooled self-priming pump according to claim 1, characterized in that: The lower end opening of the upper liquid storage cylinder (3) and the upper end opening of the lower liquid storage cylinder (2) are fixedly connected via a flange; a mounting base plate (1) is fixedly provided at the lower end of the lower liquid storage cylinder (2); a water inlet is provided at the center of the top plate of the upper liquid storage cylinder (3), and a liquid storage chamber sealing cover (7) is fixedly installed at the water inlet.

3. A vertical water-cooled self-priming pump according to claim 2, characterized in that: The water-cooled motor comprises a motor housing (17), a water injection cylinder (15), a sealing cover (16), a snap-fit ​​seat (18), a water-cooling cavity shell (19), and a drive assembly; the water injection cylinder (15) is fixedly arranged at the upper end opening of the motor housing (17), and the sealing cover (16) is fixedly arranged at the upper end opening of the water injection cylinder (15); the snap-fit ​​seat (18) is fixedly arranged at the lower end opening of the motor housing (17), the water-cooling cavity shell (19) is fixedly arranged inside the motor housing (17), and the drive assembly is arranged inside the water-cooling cavity shell (19).

4. A vertical water-cooled self-priming pump according to claim 3, characterized in that: The driving assembly comprises a terminal board (20), an upper sealed winding board (21), a waterproof housing (22), a lower sealed winding board (23), a stabilizing orifice plate (24), an electric wire (25), a rotor (26), and a motor shaft (27); a terminal board (20) is fixedly provided at the upper end of the inner side of the water-cooling chamber shell (19); the top surface of the terminal board (20) passes through the water-cooling chamber shell (19), the motor housing (17), and the upper liquid storage cylinder (3) through a wire and is connected to the power supply device; a coaxial upper sealed winding board (21), a waterproof housing (22), and a lower sealed winding board (23) are fixedly installed in sequence from top to bottom on the lower end surface of the terminal board (20); and the upper and lower ends of the inner side of the waterproof housing (22) are fixedly provided with a plurality of wires. A stabilizing orifice plate (24) is fixedly provided, and a plurality of electric wires (25) are passed through between the two stabilizing orifice plates (24), and the electric wires (25) are cooperatively wound on the upper sealed winding plate (21) and the lower sealed winding plate (23); a vertical motor shaft (27) is rotatably provided at the axis of the terminal board (20), the upper sealed winding plate (21), the waterproof housing (22), and the lower sealed winding plate (23), and a rotor (26) is fixedly provided on the outside of the motor shaft (27), and the rotor (26) is located on the inside of the waterproof housing (22); ball bearings are rotatably connected to the upper and lower ends of the outer side surface of the motor shaft (27), and the two ball bearings are fixedly installed on the upper and lower ends of the inner side of the waterproof housing (22).

5. A vertical water-cooled self-priming pump according to claim 4, characterized in that: The coupling assembly comprises a coupling frame (10) and a return plate (11); a circle of return holes is provided on the return plate (11); the return plate (11) is fixedly arranged between the flange of the upper liquid storage cylinder (3) and the flange of the lower liquid storage cylinder (2); the coupling frame (10) is fixedly arranged on the upper end of the return plate (11) through a tripod at its lower end, and the coupling frame (10) is fixedly connected to the clamping seat (18).

6. A vertical water-cooled self-priming pump according to claim 3, characterized in that: The support assembly comprises a support frame (12), a connecting rod, an adjusting screw (13), and a rubber pressure block (14); the support frame (12) is fixedly sleeved on the outer side of the lower end opening of the water injection cylinder (15); a T-shaped connecting rod is fixedly provided on both sides of the support frame (12), and two adjusting screws (13) are screwed on one end of the two connecting rods away from the support frame (12); the same rubber pressure block (14) is provided on the end of the two adjusting screws (13) on the same side away from the connecting rod, and the end of the adjusting screw (13) is rotatably connected to the rubber pressure block (14); the two rubber pressure blocks (14) are respectively in contact with the inner walls of the two sides of the upper liquid storage cylinder (3).

7. A vertical water-cooled self-priming pump according to claim 5, characterized in that: The multi-stage water pump comprises a water pump shaft (28), a wear-resistant water inlet ring (30), a packaging bottom plate (36), a water pump housing (29), and a water pump unit; the upper end of the water pump shaft (28) passes through the return plate (11) and is fixedly connected to the lower end of the motor shaft (27) through a coupling; a plurality of water pump housings (29) distributed up and down are rotatably sleeved on the outer side of the water pump shaft (28), and any two adjacent water pump housings (29) are fixedly connected; the upper end of the uppermost water pump housing (29) is fixedly connected to the lower end surface of the return plate (11), and the lower end of the lowermost water pump housing (29) is fixedly provided with a packaging bottom plate (36); a wear-resistant water inlet ring (30) is inlaid inside the upper end opening of the uppermost water pump housing (29), and a water pump unit is respectively provided inside each water pump housing (29).

8. A vertical water-cooled self-priming pump according to claim 7, characterized in that: The water pump unit comprises a guide wheel (31) and an impeller box (34); the guide wheel (31) is provided in the middle of the inner side of the water pump housing (29); the guide wheel (31) is fixedly provided on the inner wall of the water pump housing (29) through a circle of guide blades; a rubber sliding bearing (32) is inlaid on the inner wall of the guide wheel (31); a copper sliding bearing (33) is abutted on the middle of the outer side of the rubber sliding bearing (32); the copper sliding bearing (33) is cooperatively inlaid on the inner wall of the guide wheel (31); an impeller box (34) is provided at the lower end of the inner side of the water pump housing (29); the impeller box (34) is fixedly sleeved on the outer side of the water pump shaft (28) through a pin shaft; and blades (35) are fixedly provided inside the impeller box (34).

9. The vertical water-cooled self-priming pump according to claim 1, characterized in that: The leakage protection assembly comprises an anti-overflow pipe (37), a clapper (38), an eccentric shaft (39), and an air intake valve (40); the anti-overflow pipe (37) is fixedly connected to an end of the water inlet pipe (4) away from the lower liquid storage cylinder (2) via a flange; a clapper (38) is rotatably provided at the connection between the anti-overflow pipe (37) and the water inlet pipe (4) via the eccentric shaft (39); and an air intake valve (40) is provided at the upper end of the anti-overflow pipe (37).

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