Magnetic levitation sealless high-efficiency energy-saving water pump

Abstract

This utility model discloses a magnetically levitated, shaft-sealed, high-efficiency, energy-saving water pump, relating to the field of fluid machinery technology. It includes a pump body with a magnetically levitated assembly inside, and a sealing cover on one side of the pump body. The magnetically levitated assembly includes a main shaft located in the middle of the pump body and fixedly connected to a rotor. The rotor is levitated within the pump body via a magnetically levitated bearing. Several permanent magnet arrays are arranged on the outer side of the rotor, and several impellers are arranged on one side of the rotor. A sealing assembly is located on one side of the sealing cover. This utility model, by employing a combination of magnetically levitated bearings and a non-contact labyrinth seal, completely eliminates the risk of shaft seal wear and leakage, making it suitable for conveying toxic and flammable media, effectively reducing leakage rates. Simultaneously, the magnetically levitated transmission reduces mechanical friction loss, while the non-contact wear design extends the lifespan of key components, thereby effectively reducing maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of fluid machinery technology, specifically a magnetically levitated shaftless high-efficiency energy-saving water pump. Background Technology

[0002] Traditional water pumps, as core equipment for fluid transportation, are widely used in industrial production systems such as chemical processes, metallurgical cooling, and power plant circulating water; in agricultural irrigation, they support modern agricultural operations such as drip irrigation in open fields and sprinkler irrigation in greenhouses; in municipal water supply systems, they undertake key functions such as pressurization and transportation of tap water, secondary water supply, and fire protection pipe networks; and in the building heating, ventilation, and air conditioning (HVAC) field, they serve important links such as central air conditioning chilled water circulation, ground source heat pump systems, and heating hot water supply.

[0003] Traditional water pumps are widely used in industrial production, agricultural irrigation, municipal water supply, and building heating and ventilation. However, their inherent mechanical structural defects severely restrict the performance and service life of the equipment. Traditional water pumps mainly rely on mechanical magnetic levitation bearings to support the rotor. The metal-to-metal contact friction of rolling magnetic levitation bearings or sliding magnetic levitation bearings can lead to an energy loss of about 15-30%. At the same time, the shaft seal structure is another major weak link. Whether it is a packing seal or a mechanical seal, such leakage not only wastes resources, but may also cause safety accidents in chemical, petroleum and other fields.

[0004] Based on this, we now offer a magnetic levitation shaftless seal-free high-efficiency and energy-saving water pump, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide a magnetically levitated, shaftless, high-efficiency, and energy-saving water pump to solve the problems in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A magnetic levitation shaftless high-efficiency and energy-saving water pump includes a pump body, wherein a magnetic levitation component is installed inside the pump body, and a sealing cover is provided on one side of the pump body;

[0008] The magnetic levitation assembly includes a main shaft, which is located in the middle of the pump body and is fixedly connected to a rotor. The rotor is suspended in the pump body by a magnetic levitation bearing. Several permanent magnet arrays are arranged on the outer side of the rotor, and several impellers are arranged on one side of the rotor.

[0009] A sealing component is provided on one side of the sealing cover.

[0010] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0011] In one alternative: a motor housing is provided at the upper end of the pump body, and an electromagnetic motor is provided inside the motor housing. The electromagnetic motor and the permanent magnet array transmit torque through magnetic field coupling.

[0012] In one alternative: a motor cover is provided on the upper end of the motor housing, and an electrical wire sealing port is provided on one side of the motor housing.

[0013] In one alternative: the sealing assembly includes a labyrinth groove, which is formed on the inner side of the end adjacent to the pump body of the sealing cover, a rubber gasket is provided on one side of the sealing cover, and a sealing ring is provided on the outer side of the end adjacent to the pump body of the sealing cover.

[0014] In one alternative: the sealing cover has an outlet at the end away from the pump body, and the sealing ring has an inlet at its upper end.

[0015] In one alternative: a base is fixedly connected to the lower end of the pump body.

[0016] In one alternative: a number of heat dissipation fins are fixedly connected to the outside of the pump body.

[0017] In one alternative: the heat dissipation fins are made of aluminum alloy.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This invention completely eliminates the risk of shaft seal wear and leakage by using a combination of magnetic levitation bearings and non-contact labyrinth seals. It is suitable for conveying toxic and flammable media. At the same time, the use of rubber gaskets and sealing rings achieves static sealing, improves the sealing effect between the pump body and the sealing cover, and effectively reduces the leakage rate. Meanwhile, the magnetic levitation transmission reduces mechanical friction loss, and the non-contact wear design extends the life of key components, thereby effectively reducing maintenance costs and improving the practicality and performance of this device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is an exploded view of the overall structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the magnetic levitation component structure of this utility model.

[0023] Figure 4 This is a schematic diagram of the sealing component structure of this utility model.

[0024] Figure 5 This is a schematic diagram of the labyrinth groove structure of this utility model.

[0025] Figure label annotations: 1. Pump body; 2. Sealing cover; 3. Sealing ring; 4. Inlet; 5. Outlet; 6. Motor box; 7. Motor cover; 8. Base; 9. Labyrinth groove; 10. Rubber pad; 11. Heat dissipation fins; 12. Impeller; 13. Permanent magnet array; 14. Rotor; 15. Main shaft; 16. Electromagnetic motor; 17. Wire sealing port. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] In one embodiment, such as Figures 1-5 As shown, a magnetic levitation shaftless high-efficiency energy-saving water pump includes a pump body 1, a magnetic levitation component is installed inside the pump body 1, and a sealing cover 2 is installed on one side of the pump body 1.

[0028] The magnetic levitation assembly includes a main shaft 15, which is located in the middle of the pump body 1. The main shaft 15 is fixedly connected to the rotor 14. The rotor 14 is suspended in the pump body by a magnetic levitation bearing. A plurality of permanent magnet arrays 13 are arranged on the outer side of the rotor 14. A plurality of impellers 12 are arranged on one side of the rotor 14.

[0029] A sealing component is provided on one side of the sealing cover 2;

[0030] In this embodiment, the magnetic levitation component enables the rotor 14 to be suspended without contact through the magnetic bearing of the main shaft 15, the impeller 12 is driven by the permanent magnet array 13, and the sealing component labyrinth groove 9 + rubber pad 10 prevents the leakage of the medium.

[0031] In one embodiment, such as Figure 3 As shown, a motor housing 6 is provided at the upper end of the pump body 1, and an electromagnetic motor 16 is provided inside the motor housing 6. The electromagnetic motor 16 and the permanent magnet array 13 transmit torque through magnetic field coupling. The electromagnetic motor 16 drives the permanent magnet array 13 on the rotor 14 through magnetic field coupling, realizing shaftless power transmission and avoiding dynamic seal leakage.

[0032] In one embodiment, such as Figure 3 As shown, a motor cover 7 is provided on the upper end of the motor housing 6, and an electrical wire sealing port 17 is provided on one side of the motor housing 6. The motor cover 7 protects the electromagnetic motor 16, and the electrical wire sealing port 17 is sealed with potting compound to ensure electrical safety.

[0033] In one embodiment, such as Figure 4As shown, the sealing assembly includes a labyrinth groove 9, which is located on the inner side of the end adjacent to the sealing cover 2 and the pump body 1. A rubber gasket 10 is provided on one side of the sealing cover 2, and a sealing ring 3 is provided on the outer side of the end adjacent to the sealing cover 2 and the pump body 1. The labyrinth groove 9 forms a tortuous flow channel. When the medium passes through, the pressure energy is converted into heat energy. Together with the rubber gasket 10 and the sealing ring 3, a three-stage seal is achieved. At the same time, a series of alternating grooves form a meandering flow channel, which utilizes the fluid dynamics effect to achieve sealing.

[0034] In one embodiment, such as Figure 1 As shown, the sealing cover 2 has an outlet 5 at the end away from the pump body 1, and the sealing ring 3 has an inlet 4 at the upper end. The labyrinth groove 9 forms a tortuous flow channel. When the medium passes through, the pressure energy is converted into heat energy, and the rubber gasket 10 and the sealing ring 3 together achieve a three-stage seal.

[0035] In one embodiment, such as Figure 1 As shown, a base 8 is fixedly connected to the lower end of the pump body 1, and the base 8 provides stable support.

[0036] In one embodiment, such as Figure 1 As shown, several heat dissipation fins 11 are fixedly connected to the outside of the pump body 1. The aluminum alloy heat dissipation fins 11 reduce the temperature rise of the motor through forced convection, ensuring that the magnet does not demagnetize.

[0037] In one embodiment, such as Figure 1 As shown, the heat dissipation fins 11 are made of aluminum alloy, which improves the heat dissipation effect.

[0038] The above embodiments disclose a magnetically levitated, shaftless, high-efficiency, energy-saving water pump. During operation, the electromagnetic motor 16 is connected to a power source via the wire sealing port 17, generating a rotating magnetic field. This drives the permanent magnet array 13 within the motor housing 6, causing the rotor 14 to rotate frictionlessly under the support of the magnetically levitated bearing. This, in turn, drives the impeller 12 to rotate at high speed. The medium enters the pump chamber from the inlet 4, is pressurized by the impeller, and is discharged from the outlet 5. The labyrinth groove 9 and the rubber gasket 10 form a multi-stage non-contact seal, which, together with the sealing ring 3, completely prevents leakage. Simultaneously, the aluminum alloy heat dissipation fins 11 reduce the motor temperature rise through air convection, ensuring stable magnet performance. The base 8 provides stable support and reduces vibration. The entire system has no mechanical wear, achieving efficient, quiet, and long-life operation.

[0039] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A magnetic levitation shaftless high-efficiency energy-saving water pump, including a pump body (1), wherein a magnetic levitation component is provided inside the pump body (1), and a sealing cover (2) is provided on one side of the pump body (1). Its features are, The magnetic levitation assembly includes a main shaft (15), which is located in the middle of the pump body (1). The main shaft (15) is fixedly connected to the rotor (14). The rotor (14) is suspended in the pump body through a magnetic levitation bearing. Several permanent magnet arrays (13) are arranged on the outer side of the rotor (14), and several impellers (12) are arranged on one side of the rotor (14). A sealing component is provided on one side of the sealing cover (2).

2. The magnetically levitated, shaftless, high-efficiency, energy-saving water pump according to claim 1, characterized in that, The pump body (1) is provided with a motor box (6) at the upper end, and an electromagnetic motor (16) is provided inside the motor box (6). The electromagnetic motor (16) and the permanent magnet array (13) transmit torque through magnetic field coupling.

3. The magnetically levitated, shaftless, high-efficiency, energy-saving water pump according to claim 2, characterized in that, The motor housing (6) is provided with a motor cover (7) at the upper end, and a wire sealing port (17) is provided on one side of the motor housing (6).

4. The magnetically levitated, shaftless, high-efficiency, energy-saving water pump according to claim 1, characterized in that, The sealing assembly includes a labyrinth groove (9), which is located on the inner side of the end adjacent to the sealing cover (2) and the pump body (1). A rubber pad (10) is provided on one side of the sealing cover (2), and a sealing ring (3) is provided on the outer side of the end adjacent to the sealing cover (2) and the pump body (1).

5. The magnetically levitated, shaftless, high-efficiency, energy-saving water pump according to claim 4, characterized in that, The sealing cover (2) has an outlet (5) at the end away from the pump body (1), and the sealing ring (3) has an inlet (4) at the upper end.

6. The magnetically levitated, shaftless, high-efficiency, energy-saving water pump according to claim 1, characterized in that, The pump body (1) is fixedly connected to a base (8) at its lower end.

7. The magnetically levitated, shaftless, high-efficiency, energy-saving water pump according to claim 1, characterized in that, Several heat dissipation fins (11) are fixedly connected to the outside of the pump body (1).

8. The magnetically levitated, shaftless, high-efficiency, energy-saving water pump according to claim 7, characterized in that, The heat dissipation fins (11) are made of aluminum alloy.

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