CN219654946U - Rotor structure and water pump - Google Patents

Abstract

The utility model relates to the technical field of water pumps, and particularly discloses a rotor structure, which comprises a shell and a rotor main body; the shell comprises a first shell and a second shell, the first shell is provided with a containing cavity and an opening, the second shell is provided with a through hole, the second shell is inserted into the opening, the second shell and the end face of the opening form a seal, and the through hole is communicated with the containing cavity; the rotor main body comprises a rotating shaft and a core body, one end of the rotating shaft is arranged in the containing cavity, the core body is arranged around one end of the rotating shaft, the other end of the rotating shaft penetrates out of the through hole, and the side wall of the other end of the rotating shaft and the side wall of the through hole form a seal. According to the utility model, the second shell and the opening end face of the first shell form a seal, the side wall of the rotating shaft and the side wall of the through hole of the second shell form a dynamic seal, so that the overall sealing effect of the rotor structure is improved, the capability of preventing granular impurities of the rotor structure is further improved, the granular impurities are effectively prevented from entering the rotor structure, and the service life of the rotor structure applied to poor water quality is prolonged.

Description

Rotor structure and water pump

Technical Field

The utility model relates to the technical field of water pumps, in particular to a rotor structure and a water pump.

Background

The water pump is a machine for conveying or pressurizing liquid and can be applied to different fields. In general, the water pump needs to be operated frequently, and thus, reliability of the performance of the water pump is very important.

In addition, because the rotor structure generally adopts the direct friction of the stainless steel shaft and the shaft sleeve or the friction of the ceramic shaft rotor and the ceramic bearing, the rotor structure has poor sealing effect, and when the rotor structure is applied to poor water quality, a large amount of granular impurities exist in the poor water quality, such as: sediment, easily make granular impurity get into inside the rotor structure from this clearance, cause rotor structure to appear blocking or increase the wearing and tearing to the stainless steel axle, further influence the life of water pump, reduce the reliability of water pump performance.

Therefore, there is an urgent need for a rotor structure capable of improving the capability of preventing particulate impurities.

Disclosure of Invention

The utility model mainly solves the technical problem of providing a rotor structure and a water pump, which can overcome the problems or at least partially solve the problems.

In order to solve the technical problems, the utility model adopts a technical scheme that: a rotor structure comprising a housing and a rotor body; the shell comprises a first shell and a second shell, the first shell is provided with a containing cavity and an opening, the second shell is provided with a through hole, the second shell is inserted into the opening, the second shell and the end face of the opening form a seal, and the through hole is communicated with the containing cavity; the rotor main body comprises a rotating shaft and a core body, one end of the rotating shaft is arranged in the containing cavity, the core body is arranged around one end of the rotating shaft, the other end of the rotating shaft penetrates out of the through hole, and a dynamic seal is formed between the side wall of the other end of the rotating shaft and the side wall of the through hole.

Optionally, the core comprises a sleeve, a bearing, a rotor and a gasket; the first casing is equipped with annular first recess, the second casing is equipped with annular second recess, the axle sleeve includes first axle sleeve and second axle sleeve, first axle sleeve is pegged graft in first recess, the second axle sleeve is pegged graft in the second recess, the bearing is pegged graft in first axle sleeve, the rotor encircles the one end that is fixed in the pivot, the one end of rotor is equipped with annular draw-in groove, peg graft respectively in second axle sleeve and draw-in groove at the both ends of gasket, the part that the pivot salient in rotor both ends runs through bearing and gasket respectively, and the lateral wall of the part that the pivot salient in rotor both ends is laminated with the lateral wall of the through-hole of bearing and gasket respectively.

Optionally, the rotor and the shaft are injection molded integrally.

Optionally, the rotating shaft is provided with a first flat surface, the bearing is provided with a second flat surface, and when the rotating shaft penetrates through the bearing, the first flat surface is attached to the second flat surface.

Optionally, the clamping groove is provided with a third flat surface, the gasket is provided with a fourth flat surface, and when the gasket is inserted into the clamping groove, the third flat surface is attached to the fourth flat surface.

Optionally, the bearing is made of ceramic.

Optionally, the buffer sleeve comprises a first buffer sleeve and a second buffer sleeve, the first buffer sleeve is wound between the first groove and the first shaft sleeve, the outer wall of the first buffer sleeve is attached to the side wall of the first groove, the inner wall of the first buffer sleeve is attached to the outer side wall of the first shaft sleeve, the second buffer sleeve is wound between the second groove and the second shaft sleeve, the outer wall of the second buffer sleeve is attached to the side wall of the second groove, and the inner wall of the second buffer sleeve is attached to the outer side wall of the second shaft sleeve.

Optionally, the second buffer sleeve is provided with a boss, the boss is arranged between the through hole and the rotating shaft in a surrounding mode, the outer wall of the boss is attached to the side wall of the through hole, and the inner wall of the boss is attached to the side wall of the rotating shaft.

Optionally, the first buffer sleeve and the second buffer sleeve are both made of silica gel.

In order to solve the technical problems, the utility model adopts another technical scheme that: a water pump is provided, comprising the rotor structure.

The beneficial effects of the utility model are as follows: compared with the prior art, the utility model forms a seal with the opening end face of the first shell through the second shell, the side wall of the rotating shaft forms a dynamic seal with the side wall of the through hole of the second shell, the integral sealing effect of the rotor structure is improved, the capability of preventing granular impurities of the rotor structure is further improved, the granular impurities are effectively prevented from entering the rotor structure to cause abrasion or to avoid blocking the rotor main body, the application range of the rotor structure is enlarged, and the service life of the rotor structure applied to poor water quality is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic view of the overall structure of a rotor structure provided by the present utility model;

FIG. 2 is an exploded view of the overall structure of the rotor structure provided by the present utility model;

FIG. 3 is an exploded view of the overall structure of the rotor structure provided by the present utility model;

fig. 4 is a cross-sectional view of the overall structure of the rotor structure provided by the present utility model.

In the figure: 1a shell, 10a first shell, 100 a cavity, 101 an opening, 102 a first groove, 11a second shell, 110 a through hole, 111 a second groove, 2a rotor body, 20 a rotating shaft, 200 a first flat surface, 21 a core, 210a shaft sleeve, 210a first shaft sleeve, 210b second shaft sleeve, 210b1 first annular flange, 211a bearing, 211a second flat surface, 212a rotor, 212a clamping groove, 212a1 third flat surface, 213a gasket, 213a fourth flat surface, 213b second annular flange, 3a buffer sleeve, 30 a first buffer sleeve, 300 a first bump, 31 a second buffer sleeve, 310 a bump, 311 a second bump.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like as used in this specification, refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a rotor 212 includes a housing 1 and a rotor body 2, the housing 1 includes a first housing 101 and a second housing 111, the first housing 101 is provided with a cavity 100 and an opening 101, the second housing 111 is provided with a through hole 110, the second housing 111 is inserted into the opening 101, the second housing 111 forms a seal with an end surface of the opening 101, the through hole 110 is communicated with the cavity 100, the rotor body 2 includes a rotating shaft 20 and a core 21, one end of the rotating shaft 20 is disposed in the cavity 100, the core 21 is disposed around one end of the rotating shaft 20, the other end of the rotating shaft 20 passes through the through hole 110, and a side wall of the other end of the rotating shaft 20 forms a dynamic seal with a side wall of the through hole 110.

In an embodiment, as shown in fig. 1 to 3, the first housing 101 is a concave cylindrical housing, the cavity 100 is disposed in a concave portion of the cylindrical housing, the second housing 111 is an end cover with a protruding portion at a bottom, the through hole 110 is disposed in the protruding portion of the end cover, when the second housing 111 is plugged into the opening 101, the protruding portion of the second housing 111 extends into the cavity 100 along the opening 101, and an outer side wall of the protruding portion of the second housing 111 abuts against a side wall of the cavity 100, and meanwhile, a bottom end face of an edge of the end cover of the second housing 111 abuts against an end face of the opening 101, so as to form a seal, thereby effectively improving an overall sealing effect of the housing 1. The pivot 20 and the core 21 all set up in holding the intracavity 100, and when the other end of pivot 20 was worn out from through-hole 110, the lateral wall of the other end of pivot 20 was laminated with the lateral wall of through-hole 110 to this forms sealedly, effectively improves the sealed effect of pivot 20 run through-hole 110 department. When the rotor 212 structure is applied to poor water quality, a large amount of granular impurities contained in water flow along with the water flow due to the flow of the water, for example: the gap of rotor 212 structure, i.e. the connection between first shell 101 and second shell 111 and the connection between shaft 20 and through hole 110, is continuously squeezed by a great amount of silt or a great amount of condensed impurities, however, because the connection between shaft 20 and through hole 110 forms a seal with the connection between first shell 101 and second shell 111 of rotor 212 structure, the ability of rotor 212 structure to prevent particulate impurities is effectively improved, the particulate impurities are effectively prevented from entering rotor 212 structure to wear or avoid blocking rotor 20 and core 21, and in addition, the sealing effect of rotor 212 structure is good, the service range of rotor 212 structure can be enlarged, i.e. the rotor 212 structure can be used for normal water quality as well as poor water quality, and compared with the common rotor 212 structure, the rotor 212 structure is effectively prevented from invasion of particulate impurities, and the service life of rotor 212 structure in poor water quality is effectively improved.

In an embodiment, the rotating shaft 20 is a stainless steel rotating shaft, and compared with a common ceramic rotating shaft, the stainless steel rotating shaft has higher strength and is not easy to break, and is particularly applied to poor water quality, if a small amount of granular impurities with higher hardness and smaller volume enter the inside of the rotor 212 structure, the stainless steel rotating shaft with high strength can not be easily broken under the abrasion of the granular impurities.

For the specific structure of the core 21 described above, referring to fig. 1 to 4, the core 21 includes a sleeve 210, a bearing 211, a rotor 212, and a spacer 213; the first casing 101 is provided with an annular first groove 102, the second casing 111 is provided with an annular second groove 111, the shaft sleeve 210 comprises a first shaft sleeve 210a and a second shaft sleeve 210b, the first shaft sleeve 210a is inserted into the first groove 102, the second shaft sleeve 210b is inserted into the second groove 111, the bearing 211 is inserted into the first shaft sleeve 210a, the rotor 212 is fixed at one end of the rotating shaft 20 in a surrounding manner, an annular clamping groove 212a is formed in one end of the rotor 212, two ends of the gasket 213 are respectively inserted into the second shaft sleeve 210b and the clamping groove 212a, parts, protruding out of two ends of the rotor 212, of the rotating shaft 20 penetrate through the bearing 211 and the gasket 213 respectively, and side walls of the parts, protruding out of two ends of the rotor 212, of the rotating shaft 20 are respectively attached to side walls of through holes of the bearing 211 and the gasket 213. The shaft 20 is provided with a first flat surface 200, the bearing 211 is provided with a second flat surface 211a, the first flat surface 200 is bonded to the second flat surface 211a when the shaft 20 penetrates the bearing 211, the engagement groove 212a is provided with a third flat surface 212a1, the spacer 213 is provided with a fourth flat surface 213a, and the third flat surface 212a1 is bonded to the fourth flat surface 213a when the spacer 213 is inserted into the engagement groove 212 a.

In an embodiment, as shown in fig. 1 to 3, for the structure of the core 21, the bottom of the first housing 101 is provided with a protruding portion, the annular first groove 102 is provided at the protruding portion of the bottom of the first housing 101, and the opening 101 of the first groove 102 communicates with the cavity 100, the bottom of the second housing 111 is also provided with a protruding portion, the annular second groove 111 is provided at the protruding portion of the second housing 111, the opening 101 of the second groove 111 also communicates with the cavity 100, the through hole 110 communicates with the bottom of the second groove 111, the first sleeve 210a is in a cylindrical shape, the second sleeve 210b is in a cylindrical shape, the outer side wall of the second sleeve 210b is provided with a first annular flange 210b1, the gasket 213 is in a cylindrical shape, and the outer side wall of the gasket 213 is provided with a second annular flange 213b, and the fourth flat surface 213a of the gasket 213 is provided at the outer side wall of the second annular flange 213 b.

For the assembly of the core 21, the rotor 212 is fixed around one end of the rotating shaft 20, the bearing 211 is sleeved on a part of the rotating shaft 20 protruding from the rotor 212, at this time, the first flat surface 200 of the rotating shaft 20 is attached to the second flat surface 211a of the bearing 211, the first shaft sleeve 210a is sleeved on the bearing 211, the inner wall of the first shaft sleeve 210a is attached to the outer wall of the bearing 211, the first shaft sleeve 210a is inserted into the first groove 102, the gasket 213 is sleeved on the other part of the rotating shaft 20 protruding from the rotor 212, the second flange of the gasket 213 is inserted into the clamping groove 212a, the second flange is partially protruding from the clamping groove 212a, at this time, the third flat surface 212a1 of the side wall of the clamping groove 212a is attached to the fourth flat surface 213a of the gasket 213, the second shaft sleeve 210b is sleeved on the gasket 213, the bottom end surface of the first flange is abutted to the top end surface of the second flange, and the second shaft sleeve 210b is inserted into the second groove 111.

The first flat surface 200 of the rotating shaft 20 is attached to the second flat surface 211a of the bearing 211, so that the rotating shaft 20 and the bearing 211 rotate synchronously, that is, the bearing 211 rotates relative to the first shaft sleeve 210a, that is, the bearing 211 rotates in a rotating state, the first shaft sleeve 210a is in a static state, the third flat surface 212a1 of the side wall of the clamping groove 212a is attached to the fourth flat surface 213a of the gasket 213, so that the rotor 212 rotates synchronously with the gasket 213, that is, the gasket 213 rotates relative to the second shaft sleeve 210b, that is, the gasket 213 rotates, that is, the second shaft sleeve 210b rotates in a static state, and in addition, the rotor 212 rotates synchronously with the rotating shaft 20 due to the fact that the rotor 212 is fixed around the rotating shaft 20, and finally, the rotating shaft 20, the rotor 212, the bearing 211 and the gasket 213 realize synchronous rotation. Meanwhile, through the arrangement of the bearing 211 and the gasket 213, the rotating shaft 20 is separated from the first shaft sleeve 210a and the second shaft sleeve 210b respectively, that is, the first shaft sleeve 210a and the second shaft sleeve 210b are not in direct contact with the rotating shaft 20, so that abrasion of the first shaft sleeve 210a and the second shaft sleeve 210b to the rotating shaft 20 in the rotating process of the rotating shaft 20 is effectively avoided, and the service life of the rotating shaft 20 is further prolonged.

In an embodiment, the clamping groove 212a is plastic-coated, that is, the whole material of the clamping groove 212a is plastic material, and since the whole material of the clamping groove 212a is plastic material, the clamping groove 212a has elasticity, therefore, when one end of the spacer 213 stretches into the clamping groove 212a along the opening of the clamping groove 212a, the edge of the opening of the clamping groove 212a is elastically deformed, and after the spacer stretches into the bottom of the clamping groove 212a, the side wall of the clamping groove 212a is elastically deformed, and the side wall of the clamping groove 212a is elastically extruded against the side wall of one end of the spacer 213, so as to clamp the spacer 213.

In an embodiment, as shown in fig. 3 and 4, since the ceramic material has the characteristics of high hardness and good wear resistance, the first shaft sleeve 210a and the bearing 211 are made of ceramic, and when the granular impurities with high hardness and small volume enter the gap between the first shaft sleeve 210a and the bearing 211, the granular impurities are not easy to be blocked in the gap between the first shaft sleeve 210a and the bearing 211, which is beneficial to the use of the rotor 212 structure in poor water quality, and the influence of the granular impurities on the normal operation of the rotor 212 structure is reduced.

In an embodiment, as shown in fig. 3 and 4, since the ceramic material has the characteristics of high hardness and good wear resistance, the second sleeve 210b and the gasket 213 are made of ceramic, and when the granular impurities with high hardness and small volume enter the gap between the second sleeve 210b and the gasket 213, the granular impurities are not easy to be blocked in the gap between the second sleeve 210b and the gasket 213, which is beneficial to the use of the rotor 212 structure in poor water quality, and reduces the influence of the granular impurities on the normal operation of the rotor 212 structure.

In an embodiment, as shown in fig. 3 and fig. 4, the rotor 212 and the rotating shaft 20 are integrally molded, the rotor 212 is fixed on the rotating shaft 20 in a surrounding manner by an integral injection molding manner, so as to realize synchronous operation of the rotating shaft 20 and the rotor 212, and a gap between the rotating shaft 20 and the rotor 212 can be avoided by an integral injection molding manner, so that granular impurities with smaller volume are prevented from entering between the rotating shaft 20 and the rotor 212 to affect normal operation of the rotating shaft 20 and the rotor 212, namely, the rotor 212 and the rotating shaft 20 are prevented from being blocked due to granular impurities, and even the rotating shaft 20 is prevented from being broken.

Further, for the specific structure of the core 21, please refer to fig. 1 to 4, the core further includes a buffer sleeve 3, the buffer sleeve 3 includes a first buffer sleeve 30 and a second buffer sleeve 31, the first buffer sleeve 30 is circumferentially disposed between the first groove 102 and the first shaft sleeve 210a, the outer wall of the first buffer sleeve 30 is in contact with the side wall of the first groove 102, the inner wall of the first buffer sleeve 30 is in contact with the outer side wall of the first shaft sleeve 210a, the second buffer sleeve 31 is circumferentially disposed between the second groove 111 and the second shaft sleeve 210b, and the outer wall of the second buffer sleeve 31 is in contact with the side wall of the second groove 111, and the inner wall of the second buffer sleeve 31 is in contact with the outer side wall of the second shaft sleeve 210 b. In addition, the second buffer sleeve 31 is provided with a boss 310, the boss 310 is circumferentially arranged between the through hole 110 and the rotating shaft 20, the outer wall of the boss 310 is attached to the side wall of the through hole 110, and the inner wall of the boss 310 is attached to the side wall of the rotating shaft 20.

In an embodiment, as shown in fig. 1 to 3, for the structure of the buffer sleeve 3, the first buffer sleeve 30 and the second buffer sleeve 31 have elasticity, the first buffer sleeve 30 is in a cylindrical shape, a cylindrical end surface of the first buffer sleeve 30 extends towards a central axis of the cylindrical body to form a first annular bump 300, the second buffer sleeve 31 is also in a cylindrical shape, a cylindrical end surface of the second buffer sleeve 31 extends towards the central axis of the cylindrical body to form a second annular bump 311, and an end surface of the second bump 311 extends along the central axis of the cylindrical body to form a boss 310.

For the assembly of the first buffer sleeve 30, the first buffer sleeve 30 is inserted between the first groove 102 and the first shaft sleeve 210a, that is, the first buffer sleeve 30 is circumferentially arranged between the first groove 102 and the first shaft sleeve 210a, as shown in fig. 3, one end surface of the first projection 300 abuts against the bottom of the first groove 102, the other end surface of the first projection 300 abuts against the end surfaces of the first shaft sleeve 210a and the bearing 211, respectively, and due to the elasticity of the first buffer sleeve 30, the inner wall and the outer wall of the first buffer sleeve 30 elastically press the side walls of the first shaft sleeve 210a and the first groove 102 respectively by circumferentially arranging the first buffer sleeve 30 between the first groove 102 and the first shaft sleeve 210a, so that the first shaft sleeve 210a is fixed in the first groove 102, and the first shaft sleeve 210a is relatively static when the rotating shaft 20 and the bearing 211 synchronously rotate. Through the arrangement of the first bump 300, when the first shaft sleeve 210a and the bearing 211 extend into the first buffer sleeve 30 along the opening of the first shaft sleeve 30, the first shaft sleeve 210a and the bearing 211 are prevented from extending out of the other opening of the first shaft sleeve 30, namely, the first shaft sleeve 210a and the bearing 211 are prevented from partially exceeding the other opening of the first shaft sleeve 30 and contacting with the bottom of the first groove 102, the end face abrasion of the first shaft sleeve 210a and the bearing 211 is reduced, and meanwhile, through the arrangement of the first bump 300, the first shaft sleeve 210a and the bearing 211 can extend into the bottom of the first buffer sleeve 30, so that the stability of the first shaft sleeve 210a and the bearing 211 is improved, and the stability of the first shaft sleeve 210a and the bearing 211 is improved.

For the assembly of the second buffer sleeve 31, the second buffer sleeve 31 is inserted between the second groove 111 and the second sleeve 210b, that is, the second buffer sleeve 31 is circumferentially arranged between the second groove 111 and the second sleeve 210b, as shown in fig. 3, one end face of the second bump 311 is abutted with the bottom of the second groove 111, the other end face of the second bump 311 is respectively abutted with the end faces of the second sleeve 210b and the gasket 213, meanwhile, the boss 310 is inserted between the through hole 110 and the rotating shaft 20, and due to the elasticity of the second buffer sleeve 31, the inner wall and the outer wall of the second buffer sleeve 31 are respectively elastically extruded against the side walls of the second sleeve 210b and the second groove 111 by circumferentially arranging the second buffer sleeve 31 between the second groove 111 and the second sleeve 210b, so that the second sleeve 210b is fixed in the second groove 111, and the rotating shaft 20 and the gasket 213 are synchronously rotated, in addition, the boss 310 is circumferentially arranged between the through hole 110 and the rotating shaft 20, so that the inner wall and the outer wall of the boss 310 are respectively elastically extruded against the side walls of the through hole 110 and 20, thereby realizing the sealing of the through hole 110 and the rotating shaft 20. Through the arrangement of the second bump 311, when the second sleeve 210b and the gasket 213 extend into the second buffer sleeve 31 along the opening of the second sleeve 30, the second sleeve 210b and the gasket 213 are prevented from extending out of the other opening of the second sleeve 31, that is, the second sleeve 210b and the gasket 213 are prevented from partially exceeding the other opening of the second sleeve 31 and contacting the bottom of the second groove 111, and the abrasion of the end surfaces of the second sleeve 210b and the gasket 213 is reduced.

In an embodiment, the first buffer sleeve 30 and the second buffer sleeve 31 are made of silica gel, and the first buffer sleeve 30 and the second buffer sleeve 31 made of silica gel can make the first buffer sleeve 30 and the second buffer sleeve 31 have good elastic extrusion fixing effect, and in addition, the first buffer sleeve 30 and the second buffer sleeve 31 made of silica gel can make the first buffer sleeve 30 and the second buffer sleeve 31 have good damping effect.

The present utility model further provides an embodiment of a water pump, where the water pump includes the rotor structure, and the specific structure and function of the rotor structure can be referred to the above embodiment, which is not described herein in detail.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims (10)

1. A rotor structure, comprising:

the shell comprises a first shell and a second shell, the first shell is provided with a containing cavity and an opening, the second shell is provided with a through hole, the second shell is inserted into the opening, the second shell and the end face of the opening form a seal, and the through hole is communicated with the containing cavity;

the rotor main body comprises a rotating shaft and a core body, one end of the rotating shaft is arranged in the containing cavity, the core body surrounds one end of the rotating shaft, the other end of the rotating shaft penetrates out of the through hole, and the side wall of the other end of the rotating shaft and the side wall of the through hole form dynamic seal.

2. The rotor structure of claim 1, wherein the core comprises a bushing, a bearing, a rotor, and a gasket;

the first casing is equipped with annular first recess, the second casing is equipped with annular second recess, the axle sleeve include first axle sleeve and second axle sleeve, first axle sleeve peg graft in first recess, the second axle sleeve peg graft in the second recess, the bearing peg graft in first axle sleeve, the rotor encircle to be fixed in the one end of pivot, the one end of rotor is equipped with annular draw-in groove, peg graft respectively in second axle sleeve and draw-in groove in the both ends of gasket, the pivot protrusion in the part at rotor both ends runs through respectively bearing and gasket, just the pivot protrusion in the lateral wall of the part at rotor both ends respectively with the lateral wall laminating of the through hole of bearing and gasket.

3. The rotor structure of claim 2, wherein the rotor is injection molded integrally with the shaft.

4. The rotor structure according to claim 2, wherein the shaft is provided with a first flat surface, the bearing is provided with a second flat surface, and the first flat surface is fitted to the second flat surface when the shaft penetrates the bearing.

5. The rotor structure according to claim 2, wherein the card slot is provided with a third flat surface, the spacer is provided with a fourth flat surface, and the third flat surface is bonded to the fourth flat surface when the spacer is inserted into the card slot.

6. The rotor structure of claim 2, wherein the bearing is ceramic.

7. The rotor structure of claim 2, further comprising a buffer sleeve, the buffer sleeve comprising a first buffer sleeve and a second buffer sleeve, the first buffer sleeve being disposed around between the first groove and the first sleeve, and an outer wall of the first buffer sleeve being bonded to a side wall of the first groove, an inner wall of the first buffer sleeve being bonded to an outer side wall of the first sleeve, the second buffer sleeve being disposed around between the second groove and the second sleeve, and an outer wall of the second buffer sleeve being bonded to a side wall of the second groove, an inner wall of the second buffer sleeve being bonded to an outer side wall of the second sleeve.

8. The rotor structure of claim 7, wherein the second buffer sleeve is provided with a boss, the boss is circumferentially arranged between the through hole and the rotating shaft, the outer wall of the boss is attached to the side wall of the through hole, and the inner wall of the boss is attached to the side wall of the rotating shaft.

9. The rotor structure of claim 7, wherein the first and second buffer jackets are each made of silicone.

10. A water pump, characterized in that it comprises a rotor structure according to any one of claims 1-9.