Shaft core, pump cavity structure applying same and electronic water pump

Abstract

The utility model discloses a shaft core, a pump cavity structure applying the shaft core and an electronic water pump, and relates to the technical field of electronic water pumps and parts thereof, the shaft core is sequentially provided with a pump cover matching section, a first clearance groove, a second clearance groove and a pump shell matching section along the axial direction; when the rotor assembly is connected to the shaft core in a sleeving mode, a radial gap is formed between the rotor assembly and the first receding groove of the shaft core so that impurities carried by liquid can be prevented from being accumulated in the gap between the rotor assembly and the shaft core. The second receding groove of the shaft core is exposed out of the bottom of the rotor assembly, so that liquid flows near the bottom of the rotor assembly more smoothly, and impurities carried by the liquid are removed. The utility model mainly solves the problem of how to prevent impurities carried by liquid from accumulating in a gap between the rotor assembly and the shaft core; impurities can be effectively prevented from being accumulated in the gap between the rotor assembly and the shaft core, the performance, stability and heat dissipation effect of the electronic water pump are improved, and the service life of the electronic water pump is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of an electronic water pump and parts thereof, in particular to an axis core, a pump cavity structure using the axis core and an electronic water pump. Background Art

[0002] Electronic water pumps have high output efficiency and can achieve precise flow control. Therefore, electronic water pumps are widely used in automobiles, household appliances and industrial equipment. For example, new energy vehicles are usually equipped with two or more electronic water pumps as the power source of the entire cooling system.

[0003] The shaft core is one of the core components of the electronic water pump. When the electronic water pump is running, its rotor assembly rotates at high speed in the pump chamber through the support of the shaft core to drive the flow of liquid, so that the liquid enters the pump chamber of the electronic water pump from the water inlet, passes through the guide structure of the pump chamber and the rotor assembly, and finally flows out from the water outlet of the electronic water pump.

[0004] During the above process, some impurities may be brought in when the liquid flows. Although most of the impurities will be discharged through the guide holes of the rotor assembly, a small part of the impurities will accumulate in the gap between the rotor assembly and the shaft core. After the electronic water pump is used for a long time, the accumulated impurities will form scale / colloid, which will cause the rotor assembly to get stuck, and a series of problems such as the performance, heat dissipation effect and service life of the electronic water pump will be reduced.

[0005] In summary, how to prevent impurities carried by the liquid from accumulating in the gap between the rotor assembly and the shaft core has become an urgent problem to be solved. Utility Model Content

[0006] The utility model aims to provide an axis core, a pump chamber structure using the axis core and an electronic water pump, which can effectively prevent impurities carried by liquid from accumulating in the gap between the rotor assembly and the axis core.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an axis core, used in an electronic water pump, for supporting the rotor assembly of the electronic water pump; the axis core is provided with a pump cover mating section, a first air avoidance groove, a second air avoidance groove and a pump casing mating section in sequence along its axial direction; the rotor assembly is suitable for being sleeved on the axis core and rotatably mated with the axis core; when the rotor assembly is sleeved on the axis core: there is a radial gap between the rotor assembly and the first air avoidance groove of the axis core to avoid the accumulation of impurities entrained by the liquid in the gap between the rotor assembly and the axis core; and the second air avoidance groove of the axis core is exposed at the bottom of the rotor assembly, so that the liquid can flow more smoothly near the bottom of the rotor assembly, thereby removing impurities entrained by the liquid.

[0008] In the above technical solution, at least one of the end of the shaft core, the end of the first air avoidance groove of the shaft core, and the end of the second air avoidance groove of the shaft core forms a chamfered portion.

[0009] In the above technical solution, the outer diameter of the shaft core is The outer diameter of the first clearance groove of the shaft core is φ a If a :φ=0.65~0.85.

[0010] In the above technical solution, the outer diameter of the shaft core is The outer diameter of the second clearance groove of the shaft core is φ b If b :φ=0.65~0.85.

[0011] In the above technical solution, the surface of the pump casing mating section of the shaft core is provided with at least one of a knurling structure, a convex rib structure, a groove structure and a flattened structure.

[0012] A pump chamber structure comprises the above-mentioned shaft core.

[0013] In the above technical solution, the pump chamber structure is surrounded by the pump chamber structure shell and pump cover of the electronic water pump which are fixedly combined with each other; the pump shell mating section of the shaft core is used to be fixedly matched with the pump chamber structure shell, and the pump cover mating section of the shaft core is used to be fixedly matched with the pump cover, so as to support the shaft core in the pump chamber structure.

[0014] In the above technical solution, the pump chamber structure shell is manufactured by integral injection molding; the pump shell matching section of the shaft core is embedded in the bottom plate of the pump chamber structure shell by integral injection molding.

[0015] An electronic water pump comprises the above-mentioned pump chamber structure.

[0016] In the above technical scheme, the electronic water pump of the utility model also includes a rotor assembly, a stator-pump housing assembly, a drive circuit board and a rear end cover; a water inlet and a water outlet connecting the inner and outer sides of the pump chamber structure are respectively formed on the pump cover, and a shaft core seat is also formed on the inner side of the pump cover; the pump cover mating section of the shaft core is inserted into the shaft core seat of the pump cover; the rotor assembly includes a rotor bracket, a shaft sleeve, a magnetic ring and an impeller, the shaft sleeve is inserted into the rotor bracket, the magnetic ring is sleeved outside the rotor bracket, and the impeller is fixed on the rotor bracket; when the rotor assembly is sleeved on the shaft core: there is a radial gap between the shaft sleeve of the rotor assembly and the first air avoidance groove of the shaft core, and the second air avoidance groove of the shaft core is exposed on the rotor The stator-pump housing assembly comprises a pump housing and a stator assembly, and the pump housing is molded outside the stator assembly in an overmolding manner so that the stator assembly is buried in the pump housing; the pump cover, the pump chamber structure shell and the pump housing of the stator-pump housing assembly are fixed in sequence along the axial direction so that the stator assembly of the stator-pump housing assembly and the magnetic ring of the rotor assembly are aligned with each other in the radial direction; the drive circuit board is accommodated and fixed in the pump housing, and the rear end cover is fixed at one end of the pump housing and covers the opening of the pump housing; the drive circuit board is electrically connected to the stator assembly of the stator-pump housing assembly so that the stator assembly can magnetically couple and drive the rotor assembly to rotate in the pump chamber structure with the shaft core as the axis.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: the shaft core of the utility model, the pump chamber structure using the shaft core and the electronic water pump, have a radial gap between the rotor assembly and the first air avoidance groove of the shaft core to avoid the accumulation of impurities carried by the liquid in the gap between the rotor assembly and the shaft core; the second air avoidance groove of the shaft core is exposed at the bottom of the rotor assembly, so that the liquid flows more smoothly near the bottom of the rotor assembly, thereby removing impurities carried by the liquid; in this way, it is possible to effectively avoid the accumulation of impurities in the gap between the rotor assembly and the shaft core, and also effectively avoid the accumulation of impurities in the pump chamber structure, thereby avoiding the generation of scale / colloid at the above-mentioned position, thereby improving the performance, stability, heat dissipation effect and service life of the electronic water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional view of the shaft core in the utility model.

[0019] Figure 2 This is a structural view of the shaft core in the utility model.

[0020] Figure 3 It is a three-dimensional view of the electronic water pump in the utility model.

[0021] Figure 4This is an exploded view of the electronic water pump in the present invention.

[0022] Figure 5 It is a cross-sectional view of the electronic water pump in the present utility model.

[0023] Figure 6 It is a cross-sectional view of the pump chamber structure in the utility model.

[0024] The accompanying drawings are marked as follows: 1. shaft core; 11. pump cover fitting section; 12. first air avoidance groove; 13. second air avoidance groove; 14. pump casing fitting section; 141. knurling; 15. chamfered portion; 2. pump chamber structure shell; 21. bottom plate; 3. pump cover; 31. shaft core seat; 32. water inlet; 33. water outlet; 4. rotor assembly; 41. rotor bracket; 42. shaft sleeve; 43. magnetic ring; 44. impeller; 5. stator-pump casing assembly; 51. pump casing; 52. stator assembly; 6. drive circuit board; 7. rear end cover; 10. pump chamber structure. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] This embodiment provides a shaft core, which is used in an electronic water pump to support a rotor assembly 4 of the electronic water pump. That is, the shaft core 1 is used as a fixed rotating shaft in the electronic water pump.

[0027] See also Figure 1 and Figure 2 The shaft core 1 is provided with a pump cover fitting section 11, a first air avoidance groove 12, a second air avoidance groove 13 and a pump casing fitting section 14 in sequence along its axial direction.

[0028] It should be noted that the shaft core 1 is an integrally formed metal shaft, such as stainless steel or aluminum alloy; the pump cover mating section 11, the first air avoidance groove 12, the second air avoidance groove 13 and the pump casing mating section 14 are all external features of the shaft core 1, which can be obtained by machining or integral die-casting.

[0029] The rotor assembly 4 is suitable for being sleeved on the shaft core 1 and rotating with the shaft core 1 , that is, the rotor assembly 4 rotates with the shaft core 1 as the axis.

[0030] When the rotor assembly 4 is sleeved on the shaft core 1: there is a radial gap between the rotor assembly 4 and the first air avoidance groove 12 of the shaft core 1 to prevent impurities carried by the liquid from accumulating in the gap between the rotor assembly 4 and the shaft core 1; and the second air avoidance groove 13 of the shaft core 1 is exposed at the bottom of the rotor assembly 4, so that the liquid can flow more smoothly near the bottom of the rotor assembly 4, thereby removing impurities carried by the liquid.

[0031] Furthermore, at least one of the end of the shaft core 1, the end of the first air avoidance groove 12 of the shaft core 1, and the end of the second air avoidance groove 13 of the shaft core 1 forms a chamfer 15; the chamfer 15 is an external feature of the shaft core 1 and can be obtained by machining or integral die-casting; in this embodiment, chamfers 15 are formed at both ends of the shaft core 1, both ends of the first air avoidance groove 12, and both ends of the second air avoidance groove 13; providing chamfers 15 at the ends of the first air avoidance groove 12 and the ends of the second air avoidance groove 13 can reduce the phenomenon of stress concentration at the shaft core 1; providing chamfers 15 at the ends of the shaft core 1 can play a guiding role, so that the rotor assembly 4 is easier to be sleeved on the shaft core 1.

[0032] like Figure 2 As shown, further, the outer diameter of the shaft core 1 is The outer diameter φ of the first escape groove 12 of the shaft core 1 a If a :φ=0.65~0.85.

[0033] like Figure 2 As shown, further, the outer diameter of the shaft core 1 is The outer diameter φ of the second escape groove 13 of the shaft core 1 b If b :φ=0.65~0.85.

[0034] Preferably, φ a :φ=0.75, and φ b :φ=0.75, the diameters of the first air avoidance groove 12 and the second air avoidance groove 13 are set at this ratio, so that the first air avoidance groove 12 and the second air avoidance groove 13 have sufficient mechanical strength, and at the same time ensure that the first air avoidance groove 12 and the second air avoidance groove 13 can provide sufficient space so that the liquid can flow smoothly near the first air avoidance groove 12 and the second air avoidance groove 13.

[0035] Furthermore, the surface of the pump casing mating section 14 of the shaft core 1 is provided with at least one of a knurling 141, a rib structure, a groove structure and a flattened structure to improve the anti-rotation performance and the fixed structural strength of the pump casing mating section 14; in this embodiment, the surface of the pump casing mating section 14 of the shaft core 1 is provided with a knurling 141.

[0036] This embodiment also provides a pump chamber structure, which includes the shaft core 1 mentioned above.

[0037] See also Figure 4-Figure 6 Specifically, the pump chamber structure is surrounded by a pump chamber structure shell 2 and a pump cover 3 of the electronic water pump, which are fixedly combined with each other; wherein the pump chamber structure shell 2 is an integrally formed thin shell component of engineering plastic material, which can allow the magnetic field to pass through, and the pump cover 3 is an integrally formed cover body of metal material or engineering plastic material, the pump chamber structure shell 2 and the pump cover 3 are combined into one by screws or buckles, and are sealed by a sealing ring, so that the inner cavity of the pump chamber structure shell 2 and the inner cavity of the pump cover 3 are enclosed to form a pump chamber structure; the pump shell mating section 14 of the shaft core 1 is used to be fixedly matched with the pump chamber structure shell 2, and the pump cover mating section 11 of the shaft core 1 is used to be fixedly matched with the pump cover 3, so as to support the shaft core 1 in the pump chamber structure.

[0038] To be more specific, the pump chamber structure shell 2 is manufactured by one-piece injection molding; the pump casing mating section 14 of the shaft core 1 is buried in the bottom plate 21 of the pump chamber structure shell 2 by one-piece injection molding; the knurling 141 at the pump casing mating section 14 is also buried in the bottom plate 21 of the pump chamber structure shell 2, and through the knurling 141, the pump casing mating section 14 of the shaft core 1 is tightly combined with the bottom plate 21 of the pump chamber structure shell 2 to prevent the shaft core 1 from loosening, rotating or falling off.

[0039] This embodiment also provides an electronic water pump, which includes the above-mentioned pump chamber structure.

[0040] See also Figure 3-Figure 6 The electronic water pump of this embodiment further includes a rotor assembly 4 , a stator-pump housing assembly 5 , a drive circuit board 6 and a rear end cover 7 .

[0041] Among them, the driving circuit board 6 is a printed circuit board (PCB), which is equipped with a main control, a stator drive module and necessary peripheral circuits for driving the stator assembly 52 to operate; the rear end cover 7 is a metal cover used as one of the shielding and protection structures of the electronic water pump.

[0042] The pump cover 3 is provided with a water inlet 32 ​​and a water outlet 33 which are connected to the inner and outer sides of the pump chamber structure. In fact, the water inlet 32 ​​and the water outlet 33 are both hard short tubes integrally formed on the pump cover 3. In addition, a shaft core seat 31 is also formed on the inner side of the pump cover 3. The shaft core seat 31 is also integrally formed on the pump cover 3 and is located on the inner side of the water inlet 32. The pump cover mating section 11 of the shaft core 1 is inserted into the shaft core seat 31 of the pump cover 3, so that the pump cover mating section 11 of the shaft core 1 is supported by the shaft core seat 31 of the pump cover 3, so that the two ends of the shaft core 1 are fixed. The rotor assembly 4 includes a rotor bracket 41, a shaft sleeve 42, a magnetic ring 43 and an impeller 44. Among them, the rotor bracket 41 It is an integrally injection-molded annular bracket, used to provide an overall support base for the rotor assembly 4; the impeller 44 is an integrally injection-molded engineering plastic component with a plurality of blades; the magnetic ring 43 is a magnetic metal ring body, which can be magnetically coupled with the stator assembly 52 to drive the rotor assembly 4 to rotate; the shaft sleeve 42 is an integrally molded annular workpiece of graphite material / ceramic material, which has a self-lubricating function; the shaft sleeve 42 is inserted into the rotor bracket 41, and the magnetic ring 43 is sleeved outside the rotor bracket 41. In fact, the shaft sleeve 42 and the magnetic ring 43 are respectively placed in the mold of the rotor bracket 41, and the rotor bracket 41 is formed by integral injection molding. After the frame 41 is formed, it is integrated with the sleeve 42 and the magnetic ring 43; the impeller 44 is fixed on the rotor bracket 41. In this embodiment, the blades of the impeller 44 are fixed on the mounting table of the rotor bracket 41 by ultrasonic welding; it can be understood that when the rotor assembly 4 is sleeved on the shaft core 1, its sleeve 42 and the shaft core 1 are rotated together, thereby supporting the rotation of the entire rotor assembly 4; when the rotor assembly 4 is sleeved on the shaft core 1: there is a radial gap between the sleeve 42 of the rotor assembly 4 and the first air avoidance groove 12 of the shaft core 1, and the second air avoidance groove 13 of the shaft core 1 is exposed to the sleeve 42 of the rotor assembly 4; the stator-pump casing assembly 5 includes a pump casing 51 and The stator assembly 52 includes a stator core, an enameled wire coil wound on the stator core and distributed circumferentially, and a terminal plugged and fixed on the stator core and electrically connected to the end of the enameled wire coil; the pump housing 51 is formed outside the stator assembly 52 in a covering molding manner, so that the stator assembly 52 is buried in the pump housing 51. When manufacturing the stator-pump housing assembly 5, the stator assembly 52 is placed as a whole in a molding mold of the pump housing 51, and then plastic material is injected into the molding mold. After the plastic material is solidified, the pump housing 51 is formed. At this time, the stator assembly 52 and the pump housing 51 are molded as a whole to form the stator-pump housing assembly 5;The pump cover 3, the pump chamber structure shell 2 and the pump shell 51 of the stator-pump shell assembly 5 are fixed in sequence along the axial direction (specifically fixed by screws), so that the stator component 52 of the stator-pump shell assembly 5 and the magnetic ring 43 of the rotor component 4 are aligned with each other in the radial direction. At this time, the magnetic ring 43 of the rotor component 4 is located in the inner ring of the stator component 52, and the two can achieve magnetic coupling. A sealing ring is arranged between the pump chamber structure shell 2 and the stator-pump shell assembly 5 to enhance the sealing degree inside the stator-pump shell assembly 5; the driving circuit board 6 is accommodated and fixed in the pump shell 51 (specifically fixed by screws), and the rear end cover 7 is fixed to one end of the pump shell 51 and covers the pump The opening of the pump housing 51 is fixed by screws, and a sealing ring is arranged between the rear end cover 7 and the stator-pump housing assembly 5 to strengthen the sealing degree inside the stator-pump housing assembly 5; the driving circuit board 6 is electrically connected to the stator assembly 52 of the stator-pump housing assembly 5, so that the stator assembly 52 can be magnetically coupled to drive the rotor assembly 4 to rotate in the pump cavity structure with the shaft core 1 as the axis. Specifically, the terminal of the stator assembly 52 is exposed to the pump housing 51 (but located in the inner space of the pump housing 51) and is welded to the driving circuit board 6, so as to realize the electrical connection between the driving circuit board 6 and the stator assembly 52, so that the driving circuit board 6 can drive the stator assembly 52 to operate. ;

[0043] When the electronic water pump of this embodiment is in use, the driving circuit board 6 is energized, and the coil of the stator assembly 52 is energized through the terminal, so that a rotating magnetic field is formed in the space of the inner ring of the stator assembly 52, thereby driving the entire rotor assembly 4 to rotate in the pump chamber structure through magnetic coupling with the magnetic ring 43 of the rotor assembly 4; the rotating impeller 44 can drive the liquid to flow along its blades, and the water flows into the pump cover 3 from the water inlet 32 ​​and flows toward the water outlet 33, that is, the basic function of the electronic water pump is realized; in the above process, the entire pump chamber structure is filled with liquid, and these liquids may carry impurities, and there is a radial gap between the rotor assembly 4 and the first air-avoiding groove 12 of the shaft core 1, which can effectively prevent the impurities carried by the liquid from accumulating in the gap between the rotor assembly 4 and the shaft core 1; in addition, the second air-avoiding groove 13 of the shaft core 1 is exposed at the bottom of the rotor assembly 4, thereby forming an air-avoiding position, so that the liquid flows more smoothly near the bottom of the rotor assembly 4, and can effectively remove the impurities carried by the liquid (the liquid flow rate is large, and the impurities are directly carried out to the outside of the pump chamber structure).

[0044] The shaft core of this embodiment, the pump chamber structure using the shaft core, and the electronic water pump have a radial gap between the rotor assembly 4 and the first air avoidance groove 12 of the shaft core 1 to prevent impurities carried by the liquid from accumulating in the gap between the rotor assembly 4 and the shaft core 1; the second air avoidance groove 13 of the shaft core 1 is exposed at the bottom of the rotor assembly 4, so that the liquid can flow more smoothly near the bottom of the rotor assembly 4, thereby removing impurities carried by the liquid; in this way, it is possible to effectively avoid the accumulation of impurities in the gap between the rotor assembly 4 and the shaft core 1, and also effectively avoid the accumulation of impurities in the pump chamber structure, thereby avoiding the generation of scale / colloid at the above-mentioned position, thereby improving the performance, stability, heat dissipation effect and service life of the electronic water pump.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shaft core, used in an electronic water pump, for supporting a rotor assembly of the electronic water pump; characterized in that: The shaft core is provided with a pump cover matching section, a first air avoidance groove, a second air avoidance groove and a pump casing matching section in sequence along its axial direction; The rotor assembly is suitable for being sleeved on the shaft core and rotatably matched with the shaft core; When the rotor assembly is sleeved on the shaft core: There is a radial gap between the rotor assembly and the first air-avoiding groove of the shaft core to prevent impurities carried by the liquid from accumulating in the gap between the rotor assembly and the shaft core; Furthermore, the second air-avoiding groove of the shaft core is exposed at the bottom of the rotor assembly, so that the liquid can flow more smoothly near the bottom of the rotor assembly, thereby removing impurities carried by the liquid.

2. The shaft core according to claim 1, characterized in that: At least one of the end of the shaft core, the end of the first air-avoiding groove of the shaft core, and the end of the second air-avoiding groove of the shaft core forms a chamfered portion.

3. The shaft core according to claim 1 or 2, characterized in that: The outer diameter of the shaft core is The outer diameter of the first clearance groove of the shaft core is φ a If a :φ=0.65~0.

85.

4. The shaft core according to claim 1 or 2, characterized in that: The outer diameter of the shaft core is The outer diameter of the second clearance groove of the shaft core is φ b If b :φ=0.65~0.

85.

5. The shaft core according to claim 1, characterized in that: The surface of the pump casing matching section of the shaft core is provided with at least one of a knurling structure, a convex rib structure, a groove structure and a flattened structure.

6. A pump chamber structure, characterized in that: The invention comprises the shaft core described in any one of claims 1 to 5.

7. The pump chamber structure according to claim 6, characterized in that: The pump chamber structure is formed by fixing the pump chamber structure shell and pump cover of the electronic water pump together. The pump shell matching section of the shaft core is used for fixedly matching with the pump chamber structure shell, and the pump cover matching section of the shaft core is used for fixedly matching with the pump cover, so as to support the shaft core in the pump chamber structure.

8. The pump chamber structure according to claim 7, characterized in that: The pump chamber structure shell is manufactured by integral injection molding; The pump shell matching section of the shaft core is embedded in the bottom plate of the pump chamber structure shell by integral injection molding.

9. An electronic water pump, characterized in that: It comprises the pump chamber structure described in any one of claims 6-8.

10. The electronic water pump according to claim 9, characterized in that: It also includes a rotor assembly, a stator-pump housing assembly, a drive circuit board, and a rear end cover; The pump cover is formed with a water inlet and a water outlet communicating with the inner and outer sides of the pump chamber structure, and a shaft core seat is also formed on the inner side of the pump cover; The pump cover matching section of the shaft core penetrates into the shaft core seat of the pump cover; The rotor assembly comprises a rotor support, a shaft sleeve, a magnetic ring and an impeller, wherein the shaft sleeve is inserted into the rotor support, the magnetic ring is sleeved outside the rotor support, and the impeller is fixed on the rotor support; When the rotor assembly is sleeved on the shaft core: There is a radial gap between the shaft sleeve of the rotor assembly and the first air-avoiding groove of the shaft core, and the second air-avoiding groove of the shaft core is exposed on the shaft sleeve of the rotor assembly; The stator-pump housing assembly includes a pump housing and a stator assembly, wherein the pump housing is molded outside the stator assembly in an overmolding manner so that the stator assembly is buried in the pump housing; The pump cover, the pump chamber structure shell and the pump shell of the stator-pump shell assembly are fixed in sequence along the axial direction, so that the stator assembly of the stator-pump shell assembly and the magnetic ring of the rotor assembly are aligned with each other in the radial direction; The driving circuit board is accommodated and fixed in the pump housing, and the rear end cover is fixed to one end of the pump housing and covers the opening of the pump housing; The driving circuit board is electrically connected to the stator component of the stator-pump housing assembly, so that the stator component can magnetically couple and drive the rotor component to rotate in the pump chamber structure with the shaft core as the axis.

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