Vertical magnetic force water pump

Abstract

The application discloses a vertical magnetic water pump, which comprises a pump box group, an impeller assembly and a driving disc group. The pump box group comprises an end shell and a plurality of pump ring shells. The end shell and the pump ring shells are arranged in a stacked manner along an axial direction to form a multi-stage pump cavity structure. The impeller assembly is rotatably installed inside the end shell and the pump ring shells. The impeller assembly comprises an impeller disc, a bearing column and a permanent magnet sheet. The top surface of the impeller disc is provided with a flow guide cone and first and second spiral strips. The first and second spiral strips are used for guiding and centrifugally conveying liquid into the pump cavity. The driving disc group comprises a bottom disc seat, an excitation coil and a bearing disc. The excitation coil and the permanent magnet sheet form a magnetic coupling driving structure, so that the impeller assembly is rotatably driven at the bearing disc without contact. The application realizes step-by-step pressurization and conveying of liquid through the collaborative design of the multi-stage pump body structure and the magnetic driving structure. Meanwhile, the sealing reliability and the heat dissipation capacity of the device are improved. The application has the advantages of stable operation, low maintenance and strong adaptability.

Description

Technical Field

[0001] This invention relates to the field of magnetic water pump technology, specifically a vertical magnetic water pump. Background Technology

[0002] As a key component in industrial equipment and fluid transport systems, water pumps are widely used in chemical circulation, water treatment systems, equipment cooling systems, and various liquid transport scenarios. With the increasing integration of equipment and the diversification of requirements under different operating conditions, the traditional water pump structure has gradually revealed certain limitations in terms of head adjustment, sealing reliability, and heat dissipation capacity.

[0003] In existing technologies, most common water pumps employ a single-stage pump body structure, where the pump casing and impeller form a fixed single-stage flow channel, with fluid transported through a single impeller. When a higher head or flow rate is required, it is typically necessary to replace the pump with one of different specifications or to use multiple pumps in series. While this structure can meet basic transport requirements, its overall structural flexibility is poor. The pump body structure is difficult to modularly combine according to actual operating conditions, resulting in insufficient adaptability of the equipment to different application environments. Furthermore, maintenance or expansion requires complete equipment replacement, increasing operating costs.

[0004] Furthermore, in terms of drive method, traditional water pumps mostly adopt a mechanical shaft drive structure, where power is transmitted directly through the motor output shaft connected to the impeller shaft. This type of structure usually requires a mechanical seal or packing seal to prevent liquid leakage from the shaft outlet. However, during long-term operation, mechanical seals are prone to leakage problems due to wear, corrosion, or aging, which not only affects the stable operation of the equipment but also increases the maintenance frequency. At the same time, the mechanical shaft drive structure is prone to vibration and noise at high speeds, reducing the overall operational stability of the equipment.

[0005] On the other hand, with the application of electromagnetic drive technology in pump equipment, some devices have begun to use magnetic or electromagnetic drive methods for contactless transmission. However, in existing structures, the electromagnetic drive components are usually concentrated at the bottom of the pump body or inside the motor cavity, and their heat dissipation mainly relies on natural heat dissipation or simple heat dissipation structures, resulting in limited heat dissipation efficiency. When the equipment operates for a long time, electromagnetic components such as the excitation coil will generate a lot of heat. If the heat dissipation structure is not designed properly, it can easily lead to excessive temperature rise, which will affect the electromagnetic drive efficiency and even reduce the service life of the device. In addition, some existing structures lack effective fluid cooling paths and cannot make full use of the fluid inside the pump body to assist in the cooling of the drive components.

[0006] Therefore, how to provide a water pump device that can achieve modular combination of pump body structure, has a reliable non-contact electromagnetic drive method, and can achieve efficient heat dissipation through structural design, thereby improving the adaptability, operational stability and long-term working reliability of the equipment, has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] This invention aims to address the technical problems in existing water pumps, such as insufficient structural adaptability, low sealing reliability of mechanical shaft transmissions, and limited heat dissipation capacity of electromagnetic drive components, by providing a vertical magnetic water pump. This vertical magnetic water pump, through the coordinated design of a multi-stage pump body splicing structure, a magnetic coupling drive structure, and an internal fluid cooling and heat dissipation structure, enables the device to achieve contactless drive, multi-stage pressurized delivery, and efficient heat dissipation during operation, thereby improving the equipment's delivery efficiency, operational stability, and reliability.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A vertical magnetic water pump includes a pump housing assembly, several impeller assemblies, and several drive disc assemblies. The pump housing assembly includes an end shell and several pump ring shells. The drive disc assemblies are fixed to the bottom surfaces of the end shells and pump ring shells and are sealed together. Each impeller assembly is rotatably mounted inside the end shells and pump ring shells. Each impeller assembly includes an impeller disc, a bearing column fixed to the bottom surface of the impeller disc, and several permanent magnet plates. The top surface of the impeller disc is provided with a flow guide cone located at the axis and several first and second spiral bars arranged around the outer periphery of the flow guide cone. The drive disc assemblies include a base, an excitation coil, and a bearing disc. The excitation coil is arranged on the surface of the base. Several guide fins are provided inside the base. The other end of each guide fin is fixedly connected to the bearing disc located at the axis of the base. Several internal flow channels are opened inside the bearing disc. The bottom surface of the impeller disc is rotatably connected to the surface of the bearing disc through the bearing column. Several heat dissipation ridges are provided on the bottom surface of the base. The above structure enables the magnetic field generated by the excitation coil to form a magnetic coupling with the permanent magnet, thereby driving the impeller assembly to rotate and achieving contactless electromagnetic drive. At the same time, the multi-stage pump chamber structure enables the liquid to be pressurized and transported in stages.

[0009] In a preferred embodiment, the end shells and several pump ring shells are arranged in a axially stacked manner, and the outer circumferences of the end shells and pump ring shells are provided with several threaded tie rods for splicing and connecting the end shells and the pump ring shells. Sealing rings are provided between adjacent end shells and pump ring shells, as well as between adjacent pump ring shells. This structure allows the pump box assembly to be spliced ​​and combined in different stages according to actual usage requirements, thereby achieving flexible adjustment of head and flow rate, and ensuring reliable sealing between each stage of the pump chamber.

[0010] In a preferred embodiment, the first and second swirl bars are further configured such that they are evenly distributed circumferentially on the surface of the impeller disk, with the second swirl bars located at the ends of the first swirl bars, and the two are arranged in opposite directions. This arrangement of swirl bars with opposite directions allows the liquid to form a more stable rotational flow path during impeller disk rotation, thereby improving fluid guiding capability and enhancing the centrifugal transport effect of the liquid.

[0011] In a preferred embodiment, the permanent magnet is further configured such that it is arranged relative to the surface of the excitation coil and circumferentially around the outer periphery of the bearing column, and the surface of the bearing disc has a hemispherical groove adapted to the bearing column. This structure enables a stable magnetic coupling drive structure between the permanent magnet and the excitation coil, while the hemispherical groove provides support for the bearing column, thereby ensuring the stability of the impeller assembly during rotation.

[0012] In a preferred embodiment, the chassis base and the guide fins are integrally formed structures and are both made of metal. The bottom surface of the excitation coil is provided with a high thermal conductivity insulating pad, and the heat conduction between the excitation coil and the chassis base is carried out through the insulating pad. This structure enables the excitation coil to quickly conduct the heat generated during operation to the chassis base while maintaining electrical insulation, thereby improving the overall heat dissipation efficiency of the drive assembly.

[0013] In a preferred embodiment, the bearing disk is further configured such that a tapered flow guide cone is provided at the bottom end, and the flow guide cone guides and directs the liquid, allowing some of the fluid to enter the internal area of ​​the drive disk assembly, thereby forming an internal cooling fluid channel.

[0014] In a preferred embodiment, the internal flow channels are evenly distributed circumferentially on the inner side of the chassis base. One end of each internal flow channel is axially aligned with the bottom end of the guide cone, and the other end is perpendicularly aligned with the surface of the impeller disk. When the liquid passes through the surface of the chassis base, the fluid is guided into the internal flow channel by Bernoulli's principle, thereby forming an internal flow cooling structure and achieving a water-cooling heat dissipation effect on the drive disk assembly.

[0015] In a preferred embodiment, the excitation coil is further configured as a planar helical coil structure, with an excitation module electrically connected to its input end. The excitation module is used to input current into the excitation coil to generate a rotating magnetic field, enabling the excitation coil to form a magnetic coupling drive with the permanent magnet sheet, thereby driving the impeller assembly to rotate stably.

[0016] The beneficial effects achieved by this invention are as follows: 1. In this invention, the end shell and several pump ring shells are spliced ​​together along the axial direction to form a multi-stage pump chamber structure. The entire structure is spliced ​​and fixed by threaded tie rods, so that the pump box assembly can be expanded by different combinations of stages according to the usage requirements, thereby realizing flexible adjustment of head and flow rate. The structure has a high degree of modularity, which is convenient for assembly and maintenance, and at the same time improves the adaptability and expansion capability of the equipment.

[0017] 2. In this invention, the excitation coil in the drive disc assembly is magnetically coupled with the permanent magnet on the impeller assembly to achieve an axial electromagnetic drive structure. This enables the impeller assembly to form a contactless rotational transmission at the bearing disc, avoiding the wear and leakage problems caused by traditional mechanical shaft seal structures, improving the sealing reliability and service life of the pump body, while reducing operating noise and improving operating stability.

[0018] 3. In this invention, the chassis of the drive disk assembly adopts a metal structure and heat dissipation ridges are set on the bottom surface for overall heat dissipation. At the same time, several internal flow channels are opened inside the chassis, and when the liquid flows through the drive disk assembly, internal flow cooling is formed by fluid guidance, thereby achieving water cooling effect. This enables efficient heat dissipation of the excitation coil and the entire drive disk assembly, significantly improving the heat dissipation capacity and continuous working stability of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention; Figure 2 This is a schematic diagram of a cross-sectional structure according to an embodiment of the present invention; Figure 3 This is an exploded structural diagram of the end shell and pump ring shell according to an embodiment of the present invention; Figure 4 This is a schematic diagram of an impeller assembly structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the impeller disk bottom structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the surface structure of the drive disk assembly according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the bottom structure of the drive disk assembly according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the cross-sectional structure of the drive disk assembly according to an embodiment of the present invention.

[0020] Figure label: 100. Pump housing assembly; 110. End housing; 120. Pump ring housing; 130. Threaded tie rod; 111. Inlet port; 200. Impeller assembly; 210. Impeller disk; 211. Drain cone; 212. First swirl bar; 213. Second swirl bar; 220. Bearing column; 230. Permanent magnet plate; 300. Drive disk assembly; 310. Chassis base; 320. Excitation coil; 330. Bearing disk; 311. Guide fins; 312. Inner flow channel; 313. Heat dissipation ridge; 331. Drain cone. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0022] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0023] The following describes, with reference to the accompanying drawings, some embodiments of a vertical magnetic water pump provided by the present invention.

[0024] Combination Figures 1-8 As shown, the present invention provides a vertical magnetic water pump, comprising a pump housing assembly 100, several impeller assemblies 200, and a drive disc assembly 300. The pump housing assembly 100 includes an end shell 110 and several pump ring shells 120. The end shell 110 is located at the top of the overall structure, and the several pump ring shells 120 are arranged sequentially along the axial direction to form a multi-stage pump chamber structure. The drive disc assembly 300 is fixed to the bottom surface of the end shell 110 and each pump ring shell 120 and forms a sealed connection with them. Each impeller assembly 200 is rotatably installed in the internal space of the end shell 110 and each pump ring shell 120, thereby forming several interconnected fluid transport units. Through the above structural arrangement, the vertical magnetic water pump can form a multi-stage fluid transport structure, realizing the step-by-step pressurization and transport of liquids.

[0025] In this embodiment, the impeller assembly 200 includes an impeller disk 210, a bearing column 220 fixed to the bottom surface of the impeller disk 210, and several permanent magnet plates 230. A flow-guiding cone 211 located at the axis is provided on the top surface of the impeller disk 210. The flow-guiding cone 211 is used to axially guide the liquid when it enters the impeller region, causing the liquid to concentrate and enter the central region of the impeller disk 210. Simultaneously, several first swirl bars 212 and second swirl bars 213 are arranged on the surface of the impeller disk 210 around the flow-guiding cone 211. The first swirl bars 212 and second swirl bars 213 are used to guide the liquid's rotation and centrifugal propulsion when the impeller assembly 200 rotates, allowing the liquid to gain kinetic energy during rotation and be transported radially outwards.

[0026] In this embodiment, the drive disk assembly 300 includes a chassis base 310, an excitation coil 320, and a bearing disk 330. The excitation coil 320 is arranged on the surface of the chassis base 310 and along the outer periphery of the bearing disk 330, and is used to generate a changing magnetic field after being energized. A plurality of flow guide fins 311 are provided on the inner side of the chassis base 310. One end of each flow guide fin 311 is fixedly connected to the chassis base 310, and the other end is fixedly connected to the bearing disk 330 located at the axial center of the chassis base 310. A plurality of internal flow channels 312 are formed inside the bearing disk 330. The bottom surface of the impeller disk 210 is rotatably connected to the surface of the bearing disk 330 through a bearing column 220, thereby enabling the impeller assembly 200 to rotate stably at the bearing disk 330. A plurality of heat dissipation ridges 313 are provided on the bottom surface of the chassis base 310. The heat dissipation ridges 313 are used to increase the heat dissipation area at the bottom of the drive disk assembly 300, thereby improving the overall heat dissipation capacity of the device.

[0027] In this embodiment, the end shell 110 and several pump ring shells 120 are stacked sequentially along the axial direction and are spliced ​​and fixedly connected by several threaded tie rods 130 located on the outer periphery. The threaded tie rods 130 lock the end shell 110 and each pump ring shell 120 together, thereby forming a stable pump body structure. At the same time, sealing rings are provided between adjacent end shells 110 and pump ring shells 120, as well as between adjacent pump ring shells 120, to ensure the sealing between each stage of the pump chamber, prevent liquid leakage at the pump body connection, and thus ensure the sealing reliability during equipment operation.

[0028] In this embodiment, a plurality of first swirl bars 212 and second swirl bars 213 are evenly distributed circumferentially on the surface of the impeller disk 210, with the second swirl bars 213 positioned at the ends of the first swirl bars 212. The first swirl bars 212 and the second swirl bars 213 rotate in opposite directions. When the impeller assembly 200 rotates, the first swirl bars 212 perform primary rotational guidance on the liquid entering the surface of the impeller disk 210, while the second swirl bars 213 further guide and accelerate the fluid, forming a stable rotational flow path for the liquid, thereby improving the liquid conveying efficiency of the impeller assembly 200.

[0029] In this embodiment, the permanent magnet 230 is arranged opposite the surface of the excitation coil 320 and is uniformly arranged circumferentially on the outer periphery of the bearing column 220. When the excitation coil 320 is energized, it generates a changing magnetic field, which forms a magnetic coupling with the permanent magnet 230, thereby driving the impeller assembly 200 to rotate, realizing a contactless electromagnetic drive structure. Simultaneously, the surface of the bearing disc 330 has a hemispherical groove adapted to the bearing column 220, allowing the bearing column 220 to form a stable rotational support within the hemispherical groove, thus ensuring the stability of the impeller assembly 200 during rotation.

[0030] In this embodiment, the chassis base 310 and the guide fins 311 are integrally molded and are both made of metal to improve the overall structural strength and thermal conductivity. A highly thermally conductive insulating pad is provided on the bottom surface of the excitation coil 320. This insulating pad maintains electrical insulation between the excitation coil 320 and the chassis base 310 while simultaneously enabling heat conduction. This allows the heat generated by the excitation coil 320 to be quickly conducted to the chassis base 310, thereby improving the heat dissipation efficiency of the drive disk assembly 300.

[0031] In this embodiment, a tapered guide cone 331 is provided at the bottom end of the bearing disk 330. The guide cone 331 is used to guide the fluid, allowing some of the liquid to enter the internal area of ​​the drive disk assembly 300 during the flow process. Through the guiding effect of the guide cone 331, the liquid can be guided into the interior of the chassis base 310, thereby forming a fluid cooling channel.

[0032] In this embodiment, several internal flow channels 312 are evenly distributed circumferentially inside the chassis 310. One end of each internal flow channel 312 faces the bottom of the guide cone 331 along the axial direction, and the other end faces the surface of the impeller disk 210 perpendicularly. When the liquid flows inside the pump body and passes over the surface of the chassis 310, the Bernoulli effect generated by the change in fluid velocity guides some of the liquid into the internal flow channel 312 to form a flow, thereby providing water cooling for the drive disk assembly 300. Through this structural design, the excitation coil 320 and the chassis 310 can be continuously cooled during operation, thereby improving the long-term operational stability of the device.

[0033] In this embodiment, the excitation coil 320 is a planar helical coil structure, and the input end of the excitation coil 320 is electrically connected to an excitation module. The excitation module is used to input current into the excitation coil 320, causing the excitation coil 320 to generate a rotating magnetic field, thereby forming a magnetic coupling driving effect with the permanent magnet plate 230 at the bottom of the impeller assembly 200, so that the impeller assembly 200 can achieve stable rotation at the bearing disk 330.

[0034] In actual use, liquid enters the pump housing assembly 100 through the inlet port 111, and forms a progressively pressurized conveying process under the action of the impeller assemblies 200. The impeller assemblies 200 rotate continuously under the magnetic drive of the drive disc assembly 300, so that the liquid gains kinetic energy in each pump chamber and is conveyed in the axial direction. At the same time, some liquid enters the chassis base 310 through the guide cone 331 and flows through the inner flow channel 312 to cool the drive disc assembly 300 with water, and cooperates with the heat dissipation ridges 313 at the bottom of the chassis base 310 for air cooling, thereby ensuring that the equipment can maintain stable temperature conditions during long-term operation.

[0035] With the above-mentioned structural design, the vertical magnetic water pump of the present invention can achieve multi-stage superimposed conveying, magnetic drive and internal water cooling heat dissipation in coordinated operation, so that the device can have good conveying efficiency and heat dissipation performance while ensuring sealing reliability.

[0036] Working principle and usage process of this invention: During equipment installation, the end shell 110 and several pump ring shells 120 are first stacked sequentially in the axial direction as needed. Impeller assemblies 200 at each stage are then installed inside the end shell 110 and each pump ring shell 120, allowing the impeller disc 210 to rotate freely within its corresponding pump chamber. Simultaneously, the drive disc assembly 300 is fixed to the bottom surface of the end shell 110 and each pump ring shell 120, forming a sealed connection between the drive disc assembly 300 and the pump box assembly 100. Subsequently, the entire assembly is fixed using threaded tie rods 130, creating a continuous sealed structure for each pump chamber. An inlet port 111 is connected to the top of the end shell 110, allowing externally transported liquid to enter the pump box assembly 100.

[0037] When the equipment starts up, the excitation module inputs current to the excitation coil 320, causing the excitation coil 320 to generate a rotating magnetic field. This magnetic field acts on the permanent magnet plate 230 at the bottom of the impeller assembly 200 through the drive disk assembly 300, forming a magnetic coupling driving force, thereby driving the impeller assembly 200 to rotate around the shaft at the bearing disk 330. When the impeller assembly 200 rotates, the guide cone 211 set on the top surface of the impeller disk 210 first guides and concentrates the liquid entering the pump chamber, so that the liquid enters the impeller area axially. At the same time, the first swirl bar 212 and the second swirl bar 213 arranged on the surface of the impeller disk 210 generate rotational guidance and centrifugal force for the liquid, so that the liquid gains kinetic energy during rotation and is transported to the outside and the next stage pump chamber along the pump chamber.

[0038] As the liquid flows through the pump rings 120 at each stage, the impeller assemblies 200 at each stage pressurize and transport the liquid in sequence, so that the pressure and flow rate of the liquid gradually increase in the multi-stage structure, thereby realizing the vertical multi-stage pumping process, and finally transporting it to the external pipeline system from the equipment outlet.

[0039] During continuous operation, the bearing disc 330 inside the drive disc assembly 300 supports the bearing column 220, ensuring stable rotation of the impeller assembly 200. Simultaneously, the guide cone 331 at the bottom of the bearing disc 330 guides the fluid, allowing some liquid to enter the internal area of ​​the chassis base 310. As the liquid flows along the surface of the chassis base 310, it is guided through an internal flow channel 312 located on the inner side of the chassis base 310. The Bernoulli effect facilitates internal flow through the internal flow channel 312, thus providing water cooling for the drive disc assembly 300. Furthermore, the heat dissipation ridges 313 on the bottom surface of the chassis base 310 increase the heat dissipation area, allowing the drive disc assembly 300 to further dissipate heat through air convection, thereby ensuring that the excitation coil 320 and the drive disc assembly 300 maintain a stable temperature during long-term operation.

[0040] Through the above structure and workflow, the vertical magnetic water pump of the present invention can achieve the coordinated operation of multi-stage superimposed conveying, contactless electromagnetic drive and internal fluid-assisted heat dissipation, so that the device has high conveying efficiency, good sealing performance and stable heat dissipation capacity during operation.

[0041] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vertical magnetic water pump, characterized in that, The pump housing assembly (100) includes a number of impeller assemblies (200) and a drive disk assembly (300). The pump housing assembly (100) includes an end shell (110) and a number of pump ring shells (120). The drive disk assembly (300) is fixed to the bottom surface of the end shell (110) and the pump ring shells (120) and is sealed together. Each of the impeller assemblies (200) is rotatably mounted inside the end shell (110) and the pump ring shells (120). The impeller assembly (200) includes an impeller disk (210), a bearing column (220) fixed to the bottom surface of the impeller disk (210), and a number of permanent magnet plates (230). The top surface of the impeller disk (210) is provided with a flow-guiding cone (211) located at the shaft center, and a number of first swirl bars (212) and second swirl bars (213) arranged on the outer periphery of the flow-guiding cone (211). The drive disk assembly (300) includes a chassis base (310), an excitation coil (320), and an excitation coil (320) arranged on the surface of the chassis base (310). The inner side of the chassis base (310) is provided with a plurality of flow guide fins (311). The other end of the flow guide fins (311) is fixedly connected to a bearing disk (330) located at the axis of the chassis base (310). The inner side of the bearing disk (330) is provided with a plurality of internal flow channels (312). The bottom surface of the impeller disk (210) is rotatably connected to the surface of the bearing disk (330) through a bearing column (220). The bottom surface of the chassis base (310) is provided with a plurality of heat dissipation ridges (313).

2. A vertical magnetic water pump according to claim 1, characterized in that, The end shell (110) and several pump ring shells (120) are stacked sequentially along the axial direction, and several threaded tie rods (130) are provided on the outer periphery of the end shell (110) and the pump ring shells (120) for splicing and connecting the end shell (110) and the several pump ring shells (120), and sealing rings are provided between adjacent end shells (110) and pump ring shells (120) and between adjacent pump ring shells (120).

3. A vertical magnetic water pump according to claim 1, characterized in that, A plurality of the first swirl bars (212) and the second swirl bars (213) are evenly distributed in a circumferential direction on the surface of the impeller disk (210), and the second swirl bar (213) is located at the end of the first swirl bar (212), and the two are arranged in opposite directions.

4. A vertical magnetic water pump according to claim 1, characterized in that, The permanent magnet sheet (230) is arranged relative to the surface of the excitation coil (320) and is arranged in a circumferential direction on the outer periphery of the bearing column (220). The surface of the bearing disc (330) is provided with a hemispherical groove that is compatible with the bearing column (220).

5. A vertical magnetic water pump according to claim 1, characterized in that, The chassis base (310) and the guide fins (311) are integrally formed structures and are both made of metal. The bottom surface of the excitation coil (320) is provided with a high thermal conductivity insulating pad, and the heat conduction between the excitation coil (320) and the surface of the chassis base (310) is carried out through the insulating pad.

6. A vertical magnetic water pump according to claim 1, characterized in that, The bearing disc (330) is provided with a tapered drainage cone (331) at the bottom end, and liquid is drained through the drainage cone (331).

7. A vertical magnetic water pump according to claim 1, characterized in that, Several internal flow channels (312) are evenly distributed in a circumferential direction on the inner side of the chassis (310). One end of each internal flow channel (312) is axially aligned with the bottom end of the guide cone (331), and the other end is perpendicular to the surface of the impeller disk (210). When the liquid passes through the surface of the chassis (310), the fluid is guided through the internal flow channel (312) by Bernoulli's principle, which quickly dissipates heat from the entire chassis (310).

8. A vertical magnetic water pump according to claim 1, characterized in that, The excitation coil (320) is a planar spiral coil structure. The input end of the excitation coil (320) is electrically connected to an excitation module. The excitation module is used to input alternating current into the excitation coil (320) to generate a rotating magnetic field, thereby magnetically coupling with the permanent magnet plate (230) on the bottom surface of the impeller assembly (200) to drive the impeller assembly (200) to achieve contactless rotation at the bearing disk (330).

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