Water pump structure

Abstract

The water pump structure comprises a shell, an impeller, a motor and a rotary disc, the shell comprises a water storage cavity and a power cavity which are isolated from each other, the impeller is rotatably installed in the water storage cavity, the motor is installed in the power cavity, and the rotary disc is installed on an output shaft of the motor and coaxially arranged corresponding to the impeller; the side, close to the rotary disc, of the impeller is provided with a first magnetic attraction piece, and the rotary disc is provided with a second magnetic attraction piece magnetically attracted to the first magnetic attraction piece. According to the water pump structure provided by the invention, the motor and the impeller are respectively arranged in the water storage cavity and the power cavity which are mutually isolated, so that the problem of water seepage of the motor is fundamentally solved; by means of non-contact transmission of the magnetic attraction part, the problems of abrasion and leakage of a traditional shaft seal structure are solved, the reliability of the water pump is improved, and the service life of the water pump is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid machinery, and in particular to a water pump structure. Background Art

[0002] As a core power component, the reliability of the water pump of small household appliances directly affects the performance of the whole machine. Existing water pumps for small household appliances generally directly connect the motor to the impeller, and the motor drives the impeller to rotate, thereby driving the water flow. However, the water flow can easily penetrate the motor cavity through the output shaft of the motor, causing insulation failure. Summary of the invention

[0003] The technical problem to be solved by the present invention is to solve the problem that water easily intrudes into the motor cavity through the output shaft of the motor, resulting in insulation failure.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a water pump structure, including a casing, an impeller, a motor and a turntable, the casing including a water storage cavity and a power cavity isolated from each other, the impeller is rotatably installed in the water storage cavity, the motor is installed in the power cavity, the turntable is installed on the output shaft of the motor and is coaxially arranged corresponding to the impeller; a first magnetic attraction component is provided on a side of the impeller close to the turntable, and the turntable is provided with a second magnetic attraction component that is magnetically attracted to the first magnetic attraction component.

[0005] The beneficial effects of the present invention are as follows: the water pump structure provided by the present invention fundamentally solves the problem of water seepage in the motor by respectively arranging the motor and the impeller in a water storage cavity and a power cavity that are isolated from each other; the non-contact transmission of the magnetic suction component is utilized to avoid the wear and leakage problems of the traditional shaft seal structure, thereby improving the reliability and service life of the water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic cross-sectional structure diagram of a water pump structure according to a first embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a motor according to Embodiment 1 of the present invention; Figure 3 This is a schematic structural diagram of an impeller according to Embodiment 1 of the present invention; Figure 4 This is a schematic structural diagram of a pump body according to Embodiment 1 of the present invention; Figure 5 It is a structural schematic diagram of the bottom surface of the pump body of the first embodiment of the present invention.

[0007] Description of labels: 1. Shell; 11. Water storage cavity; 12. Power cavity; 2. Motor; 3. Turntable; 31. Second magnetic element; 4. Impeller; 41. Fan blades; 42. Magnetic suction cup; 43. First magnetic element; 5. Pump body; 51. Concentric shaft; 52. Water inlet; 53. Diversion channel; 54. Water outlet; 6. Flange. DETAILED DESCRIPTION

[0008] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0009] Please refer to Figures 1 to 3 A water pump structure comprises a housing 1, an impeller 4, a motor 2 and a turntable 3, wherein the housing 1 comprises a water storage cavity 11 and a power cavity 12 which are isolated from each other, the impeller 4 is rotatably mounted in the water storage cavity 11, the motor 2 is mounted in the power cavity 12, the turntable 3 is mounted on the output shaft of the motor 2 and is coaxially arranged corresponding to the impeller 4; a first magnetic attraction member 43 is provided on a side of the impeller 4 close to the turntable 3, and the turntable 3 is provided with a second magnetic attraction member 31 which is magnetically attracted to the first magnetic attraction member 43.

[0010] From the above description, it can be seen that the beneficial effects of the present invention are: by respectively arranging the motor 2 and the impeller 4 in the water storage cavity 11 and the power cavity 12 which are isolated from each other, the water seepage problem of the motor 2 is fundamentally solved; the non-contact transmission of the magnetic suction part is utilized to avoid the wear and leakage problems of the traditional shaft seal structure, thereby improving the reliability and service life of the water pump.

[0011] Furthermore, the impeller 4 includes a magnetic suction cup 42 and a fan blade 41 installed on the magnetic suction cup 42 , and the first magnetic suction member 43 is installed on a side of the magnetic suction cup 42 close to the turntable 3 .

[0012] From the above description, it can be seen that the impeller 4 is designed as a combination structure of a magnetic suction cup 42 and a fan blade 41, which facilitates the installation and positioning of the first magnetic suction component 43, while optimizing the fluid dynamics performance of the impeller 4 and improving the working efficiency of the water pump.

[0013] Furthermore, the number of the first magnetic elements 43 and the number of the second magnetic elements 31 are equal and are both plural.

[0014] It can be seen from the above description that by providing a plurality of first magnetic members 43 and second magnetic members 31 , the magnetic coupling area is increased, the torque transmission capacity is improved, and the stable operation of the water pump under high load conditions is ensured.

[0015] Furthermore, the magnetic poles of two adjacent first magnetic elements 43 face opposite directions.

[0016] From the above description, it can be seen that the design of opposite magnetic poles of adjacent magnetic suction parts optimizes the magnetic field distribution, reduces magnetic loss, improves transmission efficiency, and reduces operating noise.

[0017] Furthermore, it also includes a pump body 5 , which is installed in the water storage cavity 11 , and the impeller 4 is rotatably installed on the pump body 5 .

[0018] It can be seen from the above description that by adding the pump body 5 structure, a stable installation foundation is provided for the impeller 4, the running stability of the impeller 4 is improved, and the optimized design of the water flow channel is facilitated.

[0019] Furthermore, the pump body 5 can be detachably installed in the water storage cavity 11 .

[0020] It can be seen from the above description that the detachable design of the pump body 5 simplifies the maintenance and replacement process, reduces the use cost, and improves the maintainability and user-friendliness of the product.

[0021] Furthermore, the pump body 5 is provided with a concentric rotating shaft 51 , the impeller 4 is rotatably mounted on the concentric rotating shaft 51 , the concentric rotating shaft 51 is connected to the housing 1 , and the central axis of the concentric rotating shaft 51 coincides with the central axis of the output shaft of the motor 2 .

[0022] As can be seen from the above description, the design of the concentric rotating shaft 51 ensures the precise alignment of the impeller 4 and the rotating disk 3 of the motor 2, reduces eccentric vibration, prolongs the service life of the bearing, and improves the energy transfer efficiency.

[0023] Furthermore, a first anti-friction gasket is provided at a position of the pump body 5 corresponding to the impeller 4 .

[0024] It can be seen from the above description that the first anti-friction gasket reduces the friction loss between the impeller 4 and the pump body 5, reduces the operating noise, and improves the overall energy efficiency of the water pump.

[0025] Furthermore, a second anti-friction gasket is provided at a position of the casing 1 corresponding to the impeller 4 .

[0026] It can be seen from the above description that the second anti-friction gasket further optimizes the operating environment of the impeller 4, prevents the impeller 4 from directly contacting the housing 1, and improves the durability and reliability of the product.

[0027] Furthermore, the motor 2 is provided with a flange 6 , and the flange 6 is connected to the housing 1 .

[0028] It can be seen from the above description that the design of the flange 6 enhances the connection strength between the motor 2 and the housing 1 and improves the stability of the overall structure, while facilitating the installation and disassembly of the motor 2 and simplifying the assembly process.

[0029] Please refer to Figures 1 to 3 , Embodiment 1 of the present invention is: a water pump structure for providing power for liquid flow in a small household appliance; the water pump structure comprises a housing 1, an impeller 4, a motor 2 and a turntable 3, the housing 1 comprises a water storage cavity 11 and a power cavity 12 isolated from each other, the impeller 4 is rotatably mounted in the water storage cavity 11, the motor 2 is mounted in the power cavity 12, the turntable 3 is mounted on the output shaft of the motor 2 and is coaxially arranged corresponding to the impeller 4, that is, the central axis of the turntable 3 is extended when the turntable 3 rotates The line coincides with the extension line of the central axis of the impeller 4 when it rotates; the impeller 4 is provided with a first magnetic component 43 on the side close to the turntable 3, and the turntable 3 is provided with a second magnetic component 31 that is magnetically attracted to the first magnetic component 43; it can be understood that by respectively arranging the motor 2 and the impeller 4 in the isolated water storage cavity 11 and the power cavity 12, the water seepage problem of the motor 2 is fundamentally solved; the non-contact transmission of the magnetic component is utilized to avoid the wear and leakage problems of the traditional shaft seal structure, thereby improving the reliability and service life of the water pump.

[0030] Preferably, the impeller 4 includes a magnetic suction cup 42 and a fan blade 41 installed on the magnetic suction cup 42, and the first magnetic suction component 43 is installed on the side of the magnetic suction cup 42 close to the turntable 3; it can be understood that the impeller 4 is designed as a combination structure of the magnetic suction cup 42 and the fan blade 41, which is convenient for the installation and positioning of the first magnetic suction component 43, while optimizing the fluid dynamics performance of the impeller 4 and improving the working efficiency of the water pump; as an option, the first magnetic suction component 43 and the second magnetic suction component 31 can both be magnetic columns, and the number of the first magnetic suction components 43 and the number of the second magnetic suction components 31 are equal and both are multiple. By setting a plurality of first magnetic suction components 43 and second magnetic suction components 31, the magnetic coupling area is increased, the torque transmission capacity is improved, and the stable operation of the water pump under high load conditions is ensured. The number of the first magnetic suction components 43 and the second magnetic suction components 31 can be set according to actual application requirements.

[0031] In this embodiment, the magnetic poles of two adjacent first magnetic components 43 are in opposite directions, that is, if the magnetic pole of one of the first magnetic components 43 facing the second magnetic component 31 is N level, then the magnetic pole of the other adjacent first magnetic component 43 facing the second magnetic component 31 is S level; similarly, the magnetic poles of two adjacent second magnetic components 31 on the turntable 3 are also in opposite directions; in this way, the design of opposite magnetic poles of adjacent magnetic components optimizes the magnetic field distribution, reduces magnetic loss, improves transmission efficiency, and reduces operating noise.

[0032] Preferably, the water pump structure further comprises a pump body 5, the pump body 5 is mounted in the water storage cavity 11, the impeller 4 is rotatably mounted on the pump body 5, and by adding the pump body 5 structure, a stable mounting base is provided for the impeller 4, the running stability of the impeller 4 is improved, and the optimization design of the water flow channel is facilitated; specifically, the pump body 5 is detachably mounted in the water storage cavity 11, and the detachable connection method includes but is not limited to at least one of screw connection, bolt connection, snap connection, and pin connection. The detachable design of the pump body 5 simplifies the maintenance and replacement process, reduces the use cost, and improves the maintainability and user-friendliness of the product; more specifically, the pump body 5 is provided with a concentric rotating shaft 51, the impeller 4 is rotatably mounted on the concentric rotating shaft 51, the concentric rotating shaft 51 is connected to the housing 1, and the central axis of the concentric rotating shaft 51 coincides with the central axis of the output shaft of the motor 2, and the concentric rotating shaft 51 design ensures the precise alignment of the impeller 4 and the turntable 3 of the motor 2, reduces eccentric vibration, prolongs the service life of the bearing, and improves the energy transfer efficiency.

[0033] In detail, the pump body 5 includes a water inlet 52, a flow guide channel 53 and a water outlet 54 (such as Figure 4 and Figure 5 As shown in the figure, the impeller 4 is installed in the guide channel 53; the water enters the guide channel 53 from the water inlet 52 through the rotation of the impeller 4, and the water in the guide channel 53 flows out from the water outlet 54 through the rotation of the impeller 4; wherein, the diameter of the end of the guide channel 53 close to the water inlet 52 is larger than the diameter of the end of the guide channel 53 close to the water outlet 54, so that the water pressure at the water outlet 54 can be increased to achieve a better pumping effect. In more detail, the number of the water inlets 52 is 4, and the number of the water inlets 52 can be set according to the actual application requirements, which will not be repeated here.

[0034] As an option, a first anti-friction gasket can be provided at the position of the pump body 5 corresponding to the impeller 4. The first anti-friction gasket reduces the friction loss between the impeller 4 and the pump body 5, reduces the operating noise, and improves the overall energy efficiency of the water pump; further optionally, a second anti-friction gasket is provided at the position of the shell 1 corresponding to the impeller 4. The second anti-friction gasket further optimizes the operating environment of the impeller 4, prevents direct contact between the impeller 4 and the shell 1, and improves the durability and reliability of the product; further, the first anti-friction gasket and the second anti-friction gasket are both detachable.

[0035] In this embodiment, the motor 2 is a brushless DC motor, and a flange 6 (such as Figure 2As shown in the figure), the flange 6 is connected to the housing 1. The design of the flange 6 enhances the connection strength between the motor 2 and the housing 1, improves the stability of the overall structure, and facilitates the installation and disassembly of the motor 2, simplifying the assembly process; specifically, the flange 6 is fixed to the motor 2 by screws and connected to the housing 1 by bolts; in this way, the coaxiality of the motor 2 and the impeller 4 can be effectively ensured.

[0036] In summary, the water pump structure provided by the present invention fundamentally solves the problem of water seepage in the motor by respectively arranging the motor and the impeller in a water storage cavity and a power cavity isolated from each other; utilizes the non-contact transmission of the magnetic suction component to avoid the wear and leakage problems of the traditional shaft seal structure, thereby improving the reliability and service life of the water pump; designs the impeller as a combination structure of a magnetic suction cup and a fan blade, which is convenient for the installation and positioning of the first magnetic suction component, while optimizing the fluid dynamics performance of the impeller and improving the working efficiency of the water pump; by arranging a plurality of first magnetic suction components and a second magnetic suction component, the magnetic coupling area is increased, the torque transmission capacity is improved, and the stable operation of the water pump under high load conditions is ensured; the design of opposite magnetic poles of adjacent magnetic suction components is adopted to optimize the magnetic field distribution, reduce magnetic force loss, improve transmission efficiency, and reduce operating noise; by adding a pump body structure, It provides a stable installation foundation for the impeller, improves the running smoothness of the impeller, and facilitates the optimized design of the water flow channel; the detachable design of the pump body simplifies the maintenance and replacement process, reduces the cost of use, and improves the maintainability and user-friendliness of the product; the concentric shaft design ensures the precise alignment of the impeller and the motor turntable, reduces eccentric vibration, extends the service life of the bearing, and improves the energy transfer efficiency; the first anti-friction gasket reduces the friction loss between the impeller and the pump body, reduces operating noise, and improves the overall energy efficiency of the water pump; the second anti-friction gasket further optimizes the operating environment of the impeller, prevents direct contact between the impeller and the casing, and improves the durability and reliability of the product; the flange design enhances the connection strength between the motor and the casing, improves the stability of the overall structure, and facilitates the installation and disassembly of the motor, simplifying the assembly process.

[0037] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A water pump structure, characterized in that: It includes a shell, an impeller, a motor and a turntable, the shell includes a water storage cavity and a power cavity isolated from each other, the impeller is rotatably installed in the water storage cavity, the motor is installed in the power cavity, the turntable is installed on the output shaft of the motor and is coaxially arranged corresponding to the impeller; a first magnetic attraction component is provided on a side of the impeller close to the turntable, and the turntable is provided with a second magnetic attraction component that is magnetically attracted to the first magnetic attraction component.

2. The water pump structure according to claim 1, characterized in that: The impeller includes a magnetic suction cup and a fan blade installed on the magnetic suction cup, and the first magnetic suction component is installed on a side of the magnetic suction cup close to the rotating disk.

3. The water pump structure according to claim 1, characterized in that: The number of the first magnetic elements and the number of the second magnetic elements are equal and are both plural.

4. The water pump structure according to claim 3, characterized in that: The magnetic poles of two adjacent first magnetic attraction members face opposite directions.

5. The water pump structure according to claim 1, characterized in that: It also includes a pump body, which is installed in the water storage cavity, and the impeller is rotatably installed on the pump body.

6. The water pump structure according to claim 5, characterized in that: The pump body is detachably installed in the water storage cavity.

7. The water pump structure according to claim 5, characterized in that: The pump body is provided with a concentric rotating shaft, the impeller is rotatably mounted on the concentric rotating shaft, the concentric rotating shaft is connected to the casing, and the central axis of the concentric rotating shaft coincides with the central axis of the output shaft of the motor.

8. The water pump structure according to claim 5, characterized in that: The pump body is provided with a first anti-friction gasket at a position corresponding to the impeller.

9. The water pump structure according to claim 1, characterized in that: A second anti-friction gasket is provided at a position of the casing corresponding to the impeller.

10. The water pump structure according to claim 1, characterized in that: The motor is also provided with a flange, and the flange is connected to the housing.

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