CN216111485U - Antifouling structure of sound ring and magnetic drive pump - Google Patents

Abstract

The utility model belongs to the technical field of magnetic pumps, and particularly relates to a moving and static ring antifouling structure and a magnetic pump. A pump chamber is formed in the housing, the pump chamber having a mouth portion. The inner magnetic assembly is rotatably arranged in the pump cavity through a pump shaft. The impeller is arranged at the front end of the inner magnetic assembly. The movable ring is fixedly arranged at the front end of the inner magnetic component and corresponds to the opening. The static ring is arranged on the opening part and is sleeved on the periphery of the movable ring. The movable ring and the static ring are mutually attached, a filtering gap is formed between the movable ring and the static ring, and liquid enters the pump cavity from the filtering gap. When the anti-fouling structure of the moving ring and the static ring works, the pressure in the pump cavity enables liquid to enter the pump cavity from the filtering gap. The liquid containing impurities passes through the movable ring and the static ring for filtration, so that the impurities are prevented from entering the pump cavity from the filtration gap, and the antifouling and filtration effects are achieved.

Description

Antifouling structure of sound ring and magnetic drive pump

Technical Field

The utility model belongs to the technical field of magnetic pumps, and particularly relates to a moving and static ring antifouling structure and a magnetic pump.

Background

When the magnetic pump in the prior art is used for treating liquid containing impurities, the impurities with small volume can enter the pump cavity and continuously move to a position between the inner driving magnet and the wall surface of the pump cavity, so that the inner driving magnet, the impurities and the inner wall of the pump cavity are mutually rubbed and damaged, and the service life of the magnetic pump is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a moving and static ring antifouling structure and a magnetic pump, and aims to solve the technical problem that when the magnetic pump in the prior art is used for treating liquid containing impurities, the impurities with small volume can enter a pump cavity.

In order to achieve the above object, an anti-fouling structure for a moving ring and a static ring according to an embodiment of the present invention includes:

the pump comprises a shell, a pump body and a pump cover, wherein a pump cavity is formed in the shell and is provided with a mouth part;

the inner magnetic assembly is rotationally arranged in the pump cavity through a pump shaft;

the impeller is arranged at the front end of the inner magnetic assembly;

this sound ring antifouling structure still includes:

the movable ring is fixedly arranged at the front end of the inner magnetic assembly and corresponds to the opening; and

the static ring is arranged on the opening part and sleeved on the periphery of the movable ring, a filtering gap is formed between the static ring and the movable ring, and liquid enters the pump cavity from the filtering gap.

Optionally, this sound ring antifouling structure still includes:

the pump comprises a pump shaft, a pump cover and a pump cover, wherein the pump shaft is arranged in the pump cover, the pump cover is provided with a pump shaft, the pump shaft is sleeved with the pump shaft and provided with an inner peripheral surface and an outer peripheral surface, a plurality of first flow channels are arranged on the inner peripheral surface, a plurality of second flow channels are arranged on the outer peripheral surface, the first flow channels and the second flow channels are connected to form a circulating flow channel, and liquid entering the pump cavity circularly flows on the circulating flow channel.

Optionally, the first flow channel is spirally arranged on the inner circumferential surface and has a first liquid inlet end and a first liquid outlet end; the second flow channel is vertically arranged on the peripheral surface and is provided with a second liquid inlet end and a second liquid outlet end; the first liquid inlet end is communicated with the second liquid outlet end, and the first liquid outlet end is communicated with the second liquid inlet end.

Optionally, an annular groove is formed in the circumferential direction of the inner circumferential surface at the front end of the inner circumferential surface, and the first liquid outlet ends are connected to the annular groove; and a plurality of backflow holes are formed in the annular groove, penetrate through the thickness direction of the shaft sleeve and are respectively connected to the second liquid inlet end.

Optionally, one second flow passage is arranged every 90 ° in the circumferential direction of the sleeve; the backflow holes are arranged every 90 degrees along the circumferential direction of the annular groove; the four backflow holes are respectively connected to the four second flow passages; the number of the first flow passages is two, and the two first flow passages are arranged on the inner peripheral surface in a double spiral shape.

Optionally, a liquid inlet gap is defined by the outer side surface of the inner magnetic assembly and the inner wall surface of the pump cavity, and a liquid outlet part is formed at the joint of the inner magnetic assembly and the impeller; the middle part of the inner magnetic assembly is provided with a shaft hole penetrating through the inner magnetic assembly in the height direction, the rear end of the pump shaft is fixed at the rear end of the shell and extends forwards into the shaft hole, and the shaft sleeve is sleeved at the middle part of the pump shaft and is attached to the inner wall of the shaft hole; the liquid enters from the filtering gap and then enters the pump cavity through the liquid inlet gap, the liquid in the pump cavity can enter the shaft sleeve for circulation, and the liquid can flow out from the liquid outlet part through the shaft sleeve.

Optionally, a plurality of first matching parts which are uniformly distributed are arranged along the circumferential direction of the mouth part; a plurality of second matching parts which are uniformly distributed are arranged on the outer side surface of the static ring along the circumferential direction of the static ring, and the second matching parts penetrate through the front side and the rear side of the static ring; the plurality of second matching parts are respectively matched with the plurality of first matching parts in a concave-convex mode; the mouth part is internally provided with a clamp spring, the clamp spring is fixed on the inner side of the mouth part, and the clamp spring is limited at the front end of the static ring.

Optionally, follow the circumference of interior magnetic component is equipped with round indent trench at its front end, be equipped with a plurality of first bosss on the indent trench, be equipped with a plurality of second bosss on the rear end face of impeller, the rear end of rotating ring is equipped with a plurality of first depressed centers, the front end of rotating ring is equipped with a plurality of second depressed centers, both ends are hugged closely respectively extremely around the rotating ring interior magnetic component with the impeller, just first boss imbeds respectively first depressed center, the second boss imbeds respectively the second depressed center.

Optionally, a first annular wall and a second annular wall are arranged at the front end of the inner magnetic assembly, the second annular wall and the first annular wall are concentrically arranged, and an impeller mounting groove is formed between the second annular wall and the first annular wall; an embedded sleeve is arranged at the center of the rear end face of the impeller, a plurality of elastic barbs and a plurality of positioning grooves are arranged on the inner side of the embedded sleeve, and a plurality of buckling positions and a plurality of positioning bosses are arranged on the outer side face of the first annular wall; the embedding sleeve is embedded into the impeller mounting groove, the elastic barbs are respectively buckled with the buckling positions, and the positioning bosses are embedded into the positioning grooves.

In order to achieve the above object, the magnetic pump provided in the embodiment of the present invention has the above moving and static ring anti-fouling structure.

The technical scheme or the technical schemes in the moving and static ring antifouling structure and the magnetic pump provided by the embodiment of the utility model at least have one of the following technical effects: when the anti-fouling structure of the moving ring and the static ring works, the pressure in the pump cavity enables liquid to enter the pump cavity from the filtering gap. The liquid containing impurities passes through the movable ring and the static ring for filtration, so that the impurities are prevented from entering the pump cavity from the filtration gap, and the antifouling and filtration effects are achieved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a static and dynamic ring anti-fouling structure provided in an embodiment of the present invention.

Fig. 2 is a partially enlarged view of the area a shown in fig. 1.

Fig. 3 is a schematic structural diagram of a shaft sleeve according to an embodiment of the present invention.

Fig. 4 is a sectional view taken along the line B-B shown in fig. 3.

Fig. 5 is an assembly view of the inner magnetic assembly, the impeller, and the rotating ring according to the embodiment of the present invention.

Fig. 6 is a schematic structural diagram of an internal magnetic assembly according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of an impeller provided in an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a rotating ring according to an embodiment of the present invention.

Fig. 9 is an exploded view of the moving and static ring anti-fouling structure according to the embodiment of the present invention.

Fig. 10 is a schematic structural diagram of a magnetic pump according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that, if directional indications are provided in the embodiments of the present invention, such as directions of up, down, left, right, front, back, inner, outer, etc., the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, terms such as "mounted," "connected," and "fixed" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1-2, a static and dynamic ring anti-fouling structure 1 is provided, which includes a housing 11, an inner magnetic assembly 13, an impeller 15, a dynamic ring 16, and a static ring 17. A pump chamber 111 is formed in the housing 11, and the pump chamber 111 has a mouth portion 112. The inner magnetic assembly 13 is rotatably disposed in the pump chamber 111 by a pump shaft 12. The impeller 15 is arranged at the front end of the inner magnetic assembly 13. The moving ring 16 is fixed at the front end of the inner magnetic assembly 13 and corresponds to the mouth 112. The stationary ring 17 is provided on the mouth 112 and fitted around the outer periphery of the movable ring 16. The moving ring 16 and the stationary ring 17 are attached to each other with a filter gap 114 formed therebetween, and the liquid enters the pump chamber 111 through the filter gap 114.

In operation, pressure within the pump chamber 111 causes liquid to enter the pump chamber 111 from the filter gap 113. The liquid containing impurities is filtered by the movable ring 16 and the fixed ring 17, so that the impurities are prevented from entering the pump cavity 111 from the filtering gap 113, and the antifouling and filtering effects are achieved.

In another embodiment of the present invention, as shown in fig. 1, the moving and static ring anti-fouling structure 1 further includes a shaft sleeve 14, the shaft sleeve 14 is sleeved on the pump shaft 12, the shaft sleeve 14 has an inner circumferential surface 141 and an outer circumferential surface 142, the inner circumferential surface 141 is provided with a plurality of first flow channels 143, the outer circumferential surface 142 is provided with a plurality of second flow channels 144, the first flow channels 143 and the second flow channels 144 are connected to form a circulation flow channel, and the liquid entering the pump chamber 111 circulates on the circulation flow channel. When the pump works, liquid enters the pump cavity 111, the shaft sleeve 14 is sleeved on the pump shaft 12, the inner peripheral surface and the outer peripheral surface of the shaft sleeve 14 are provided with circulating flow channels, and the liquid entering the pump cavity 111 circularly flows on the circulating flow channels, so that water-cooling heat dissipation is performed on parts such as the pump shaft 12, and the burning-out phenomenon caused by lack of heat dissipation is prevented.

In another embodiment of the present invention, as shown in fig. 1, a liquid inlet gap 114 is defined between an outer side surface of the inner magnetic assembly 13 of the moving and static ring anti-fouling structure 1 and an inner wall surface of the pump chamber 111, and a liquid outlet portion 115 is formed at a joint of the inner magnetic assembly 13 and the impeller 15. The middle part of the inner magnetic component 13 is provided with a shaft hole 131 penetrating through the height direction of the inner magnetic component, the rear end of the pump shaft 12 is fixed at the rear end of the casing 11 and extends forwards into the shaft hole 131, and the shaft sleeve 14 is sleeved at the middle part of the pump shaft 12 and is attached to the inner wall of the shaft hole 131. The liquid enters from the filter gap 114 and enters the pump cavity 111 through the liquid inlet gap 114, the liquid in the pump cavity 111 can enter the shaft sleeve 14 for circulation, and the liquid flowing out of the shaft sleeve 14 can flow out from the liquid outlet part 115, so that the convection between the liquid in the pump cavity 111 and the outside liquid is maintained, and the continuous rise of the temperature of the liquid in the closed cavity is avoided.

In another embodiment of the present invention, as shown in fig. 3 and 4, the first flow channel 143 of the moving and static ring anti-fouling structure 1 is spirally arranged on the inner circumferential surface 141, and has a first liquid inlet end 1431 and a first liquid outlet end 1432. The second flow passage 144 is vertically disposed on the outer peripheral surface 142, and has a second inlet end 1441 and a second outlet end 1442. The first liquid inlet end 1431 is communicated with the second liquid outlet end 1442, and the first liquid outlet end 1432 is communicated with the second liquid inlet end 1441. After being input into the first flow channel 143 from the first liquid inlet end 1431, the liquid is conveyed forward to the first liquid outlet end 1432, then is output from the first liquid outlet end 1432 to the second liquid inlet end 1441, the liquid is conveyed to the second liquid outlet end 1442 continuously along the second flow channel 144, and finally the liquid flowing out from the second liquid outlet end 1442 is input into the first flow channel 143 again through the first liquid inlet end 1431, and the circulation is repeated.

In another embodiment of the present invention, as shown in fig. 3 and 4, an annular groove 145 is provided at a front end thereof in a circumferential direction of the inner circumferential surface 141, and the first liquid outlet ends 1432 are connected to the annular groove 145. The annular groove 145 is provided with a plurality of return holes 146, and the return holes 146 penetrate through the thickness direction of the sleeve 14 and are connected to the second liquid inlet ends 1441, respectively. During liquid circulation, due to the centrifugal effect of the rotation of the shaft sleeve 14, the liquid is output from the first liquid outlet end 1432 to the annular groove 145 and is thrown out from the backflow hole 146 to the second liquid inlet end 1441, and then the subsequent liquid is also supplemented to the first flow passage 143, so that circulation is realized.

In another embodiment of the present invention, as shown in fig. 3 and 4, in order to accelerate the backflow speed, a second flow passage 144 is disposed every 90 ° in the circumferential direction of the sleeve 14. The return holes 146 are arranged every 90 ° in the circumferential direction of the annular groove 145. The four return holes 146 are respectively connected to the four second flow passages 144.

In another embodiment of the present invention, as shown in fig. 3 and 4, the number of the first flow passages 143 of the moving and static ring antifouling structure 1 is two, and the two first flow passages 143 are arranged on the inner circumferential surface 141 in a double spiral shape. The two first flow channels 143 of the double spiral shape can feed the liquid forward faster and increase the liquid flow speed when the sleeve 14 rotates.

In another embodiment of the present invention, as shown in fig. 6 to 8, a circle of inner concave groove 132 is disposed at the front end of the inner magnetic assembly along the circumferential direction of the inner magnetic assembly, the inner concave groove 132 is provided with a plurality of first bosses 133, the rear end surface of the impeller 15 is provided with a plurality of second bosses 151, the rear end of the rotating ring 16 is provided with a plurality of first bosses 161, the front end of the rotating ring 16 is provided with a plurality of second bosses 162, the front end and the rear end of the rotating ring 16 are respectively attached to the inner magnetic assembly 13 and the impeller 15, the first bosses 133 are respectively embedded in the first bosses 161, and the second bosses 151 are respectively embedded in the second bosses 162. During operation, the movable ring 16, the inner magnetic assembly 13 and the impeller 15 can rotate synchronously, and the structural stability of the movable ring 16 is enhanced.

In another embodiment of the present invention, as shown in fig. 6 to 8, a first annular wall 134 and a second annular wall 135 are disposed at a front end of the inner magnetic assembly 13 of the moving and static ring anti-fouling structure 1, and the second annular wall 135 and the first annular wall 134 are concentrically disposed with an impeller installation groove 136 formed therebetween. An embedding sleeve 152 is arranged at the center of the rear end face of the impeller 15, a plurality of elastic barbs 153 and a plurality of positioning grooves 154 are arranged on the inner side of the embedding sleeve 152, and a plurality of buckling positions and a plurality of positioning bosses are arranged on the outer side face of the first annular wall 134. The embedding sleeve 152 is embedded into the impeller mounting groove 136, the elastic barbs 153 are respectively buckled at buckling positions, and the positioning bosses are embedded into the positioning grooves 154. This impeller 15 adopts the buckle mounting mode to fix at interior magnetic component 13, and during the installation, embedding cover 152 imbeds impeller mounting groove 136, and elasticity barb 153 buckles position 137 respectively, and location boss 138 imbeds positioning groove 154, has the assembly simply, combines firm advantage.

In another embodiment of the present invention, as shown in fig. 9, a plurality of first matching portions 1121 are uniformly distributed along the circumferential direction of the mouth portion 112; a plurality of second matching parts 171 which are uniformly distributed are arranged on the outer side surface of the static ring 17 along the circumferential direction, and the second matching parts 171 penetrate through the front side and the rear side of the static ring; the plurality of second engaging portions 171 are respectively engaged with the plurality of first engaging portions 1121 in a concave-convex manner; a clamp spring 19 is further arranged inside the opening portion 112, the clamp spring 19 is fixed on the inner side of the opening portion 112, and the clamp spring 19 is limited at the front end of the stationary ring 17. The stationary ring 17 is fixed and oriented by the plurality of second engagement portions 171 being concavo-convex engaged to the plurality of first engagement portions 1121, respectively.

Further, the first fitting portion 1121 is provided every 90 ° in the circumferential direction of the mouth portion 112. The second fitting portion 171 is provided every 90 ° in the circumferential direction of the stationary ring 17. The four first engaging portions 1121 respectively form engaging gaps with the four second engaging portions 171, so that the stationary ring 17 can move in four directions, namely, up, down, left and right directions, thereby enabling the stationary ring 17 to automatically center during operation, ensuring concentricity of the moving ring and the stationary ring 17, and avoiding jamming caused by eccentricity. Specifically, the four directions corresponding to the four second fitting portions 171 are four directions, i.e., up, down, left, and right, respectively.

It should be understood that the first engagement portions 1121 and the first engagement portions 1121 are not limited to four, and may be provided one (three) at every 120 °, or one (eight) at every 45 °, so that the displacement in multiple directions can be realized, and the automatic centering of the stationary ring can be realized.

Specifically, the first mating portion 1121 is a square boss, and the second mating portion 171 is a square groove. The square boss can be embedded into the square groove along the rotating circumference of the movable ring, and the square boss is tightly matched and easy to assemble.

It is to be understood that the first engagement portion 1121 is a square groove and the second engagement portion 171 is a square boss, which can achieve the same function and effect as described above.

In addition, in order to fix the snap spring 19 and prevent the snap spring 19 from being removed, a circle of clamping grooves 1122 is formed in the circumferential direction of the edge portion 112, a circle of clamping convex portions 191 are formed on the periphery of the snap spring 19, and the clamping convex portions 191 are embedded into the clamping grooves 1122. The engagement protrusion 191 is provided with a plurality of notches 192.

In an embodiment of the present invention, as shown in fig. 1 to 2, a magnetic pump 2 is provided, which has the moving and static ring anti-fouling structure 1.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A static and dynamic ring antifouling structure comprises:

the pump comprises a shell, a pump body and a pump cover, wherein a pump cavity is formed in the shell and is provided with a mouth part;

the inner magnetic assembly is rotationally arranged in the pump cavity through a pump shaft;

the impeller is arranged at the front end of the inner magnetic assembly;

it is characterized by also comprising:

the movable ring is fixedly arranged at the front end of the inner magnetic assembly and corresponds to the opening; and

the static ring is arranged on the opening part and sleeved on the periphery of the movable ring, a filtering gap is formed between the static ring and the movable ring, and liquid enters the pump cavity from the filtering gap.

2. The moving and static ring antifouling structure according to claim 1, further comprising:

the pump comprises a pump shaft, a pump cover and a pump cover, wherein the pump shaft is arranged in the pump cover, the pump cover is provided with a pump shaft, the pump shaft is sleeved with the pump shaft and provided with an inner peripheral surface and an outer peripheral surface, a plurality of first flow channels are arranged on the inner peripheral surface, a plurality of second flow channels are arranged on the outer peripheral surface, the first flow channels and the second flow channels are connected to form a circulating flow channel, and liquid entering the pump cavity circularly flows on the circulating flow channel.

3. The moving and static ring antifouling structure as claimed in claim 2, wherein said first flow path is spirally arranged on said inner circumferential surface, and has a first liquid inlet end and a first liquid outlet end; the second flow channel is vertically arranged on the peripheral surface and is provided with a second liquid inlet end and a second liquid outlet end; the first liquid inlet end is communicated with the second liquid outlet end, and the first liquid outlet end is communicated with the second liquid inlet end.

4. The moving and static ring antifouling structure as claimed in claim 3, wherein an annular groove is provided at a front end thereof in a circumferential direction of the inner circumferential surface, and the first liquid outlet ends are connected to the annular groove; and a plurality of backflow holes are formed in the annular groove, penetrate through the thickness direction of the shaft sleeve and are respectively connected to the second liquid inlet end.

5. The dynamic-static ring antifouling structure as claimed in claim 4, wherein the second flow passage is arranged every 90 ° in the circumferential direction of the boss; the backflow holes are arranged every 90 degrees along the circumferential direction of the annular groove; the four backflow holes are respectively connected to the four second flow passages; the number of the first flow passages is two, and the two first flow passages are arranged on the inner peripheral surface in a double spiral shape.

6. The dynamic and static ring antifouling structure as claimed in any one of claims 2 to 5, wherein a liquid inlet gap is defined between the outer side surface of the inner magnetic assembly and the inner wall surface of the pump chamber, and a liquid outlet portion is formed at the joint of the inner magnetic assembly and the impeller; the middle part of the inner magnetic assembly is provided with a shaft hole penetrating through the inner magnetic assembly in the height direction, the rear end of the pump shaft is fixed at the rear end of the shell and extends forwards into the shaft hole, and the shaft sleeve is sleeved at the middle part of the pump shaft and is attached to the inner wall of the shaft hole; the liquid enters from the filtering gap and then enters the pump cavity through the liquid inlet gap, the liquid in the pump cavity can enter the shaft sleeve for circulation, and the liquid can flow out from the liquid outlet part through the shaft sleeve.

7. The dynamic and static ring antifouling structure as claimed in any one of claims 1 to 5, wherein a plurality of first engagement portions are uniformly distributed along the circumferential direction of the mouth portion; a plurality of second matching parts which are uniformly distributed are arranged on the outer side surface of the static ring along the circumferential direction of the static ring, and the second matching parts penetrate through the front side and the rear side of the static ring; the plurality of second matching parts are respectively matched with the plurality of first matching parts in a concave-convex mode; the mouth part is internally provided with a clamp spring, the clamp spring is fixed on the inner side of the mouth part, and the clamp spring is limited at the front end of the static ring.

8. The moving and static ring antifouling structure as claimed in any one of claims 1 to 5, wherein a circle of inner concave groove is provided at the front end of the inner magnetic component along the circumferential direction of the inner magnetic component, a plurality of first bosses are provided on the inner concave groove, a plurality of second bosses are provided on the rear end surface of the impeller, a plurality of first bosses are provided at the rear end of the moving ring, a plurality of second bosses are provided at the front end of the moving ring, the front and rear ends of the moving ring are respectively attached to the inner magnetic component and the impeller, the first bosses are respectively embedded in the first bosses, and the second bosses are respectively embedded in the second bosses.

9. The moving and static ring antifouling structure as claimed in any one of claims 1 to 5, wherein the front end of the inner magnetic assembly is provided with a first annular wall and a second annular wall, the second annular wall and the first annular wall are concentrically arranged, and an impeller mounting groove is formed between the second annular wall and the first annular wall; an embedded sleeve is arranged at the center of the rear end face of the impeller, a plurality of elastic barbs and a plurality of positioning grooves are arranged on the inner side of the embedded sleeve, and a plurality of buckling positions and a plurality of positioning bosses are arranged on the outer side face of the first annular wall; the embedding sleeve is embedded into the impeller mounting groove, the elastic barbs are respectively buckled with the buckling positions, and the positioning bosses are embedded into the positioning grooves.

10. Magnetic pump, characterized in that, it has the static and dynamic ring antifouling structure as stated in any claim 1-9.

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