WO2023050482A1

WO2023050482A1 - Circulating water-cooling structure and magnetic pump

Info

Publication number: WO2023050482A1
Application number: PCT/CN2021/123554
Authority: WO
Inventors: 吴斌
Original assignee: 东莞市创升机械设备有限公司
Priority date: 2021-09-30
Filing date: 2021-10-13
Publication date: 2023-04-06
Also published as: CN216407286U

Abstract

A circulating water-cooling structure (1) and a magnetic pump (2) having the circulating water-cooling structure (1). The circulating water-cooling structure (1) comprises a housing (11), a pump shaft (12), an inner magnetic assembly (13), a shaft sleeve (14), and an impeller (15). A pump cavity (111) is formed in the housing (11), and the pump cavity (111) has an opening portion (112). The pump shaft (12) is rotatably fixed in the pump cavity (111). The inner magnetic assembly (13) is rotatably connected to the housing (11) by means of the pump shaft (12). The shaft sleeve (14) is sleeved on the pump shaft (12), the shaft sleeve (14) has an inner peripheral surface (141) and an outer peripheral surface (142), the inner peripheral surface (141) is provided with a plurality of first flow channels (143), the outer peripheral 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 a liquid entering the pump cavity (111) circularly flows on the circulation flow channel. The impeller (15) is provided at the front end of the inner magnetic assembly (13). When the circulating water-cooling structure (1) operates, the liquid enters the pump cavity (111), the shaft sleeve (14) is sleeved on the pump shaft (12), the inner and outer peripheral surfaces (141, 142) of the shaft sleeve (14) are provided with the circulation flow channel, and the liquid entering the pump cavity (111) circularly flows on the circulation flow channel, thereby performing water-cooling heat dissipation on parts such as the pump shaft (12).

Description

A circulating water cooling structure and magnetic pump

technical field

The utility model belongs to the technical field of magnetic pumps, in particular to a circulating water cooling structure and a magnetic pump.

Background technique

Magnetic pump (also known as magnetic drive pump) is mainly composed of pump head, magnetic drive (magnetic cylinder), motor, base and other parts. The magnetic drive of the magnetic pump is composed of an outer magnetic rotor, an inner magnetic assembly and a non-magnetic isolation sleeve. When the motor drives the outer magnetic rotor to rotate through the coupling, the magnetic field can penetrate the air gap and the non-magnetic material isolation sleeve, and drive the inner magnetic assembly connected to the impeller to rotate synchronously, realizing the non-contact synchronous transmission of power.

Among them, the internal magnetic component is driven and connected to the impeller through a rotating shaft. The friction of the rotating shaft will generate high temperature when it rotates. However, the rotating shaft lacks a heat dissipation structure. Long-term high temperature will affect the normal operation and service life of the rotating shaft, resulting in burnout and other problems.

Utility model content

The purpose of the utility model is to provide a circulating water cooling structure and a magnetic pump, aiming at solving the technical problem that the rotating shaft of the magnetic pump in the prior art lacks a heat dissipation structure.

In order to achieve the above purpose, a circulating water cooling structure provided by the embodiment of the present invention includes:

A casing, a pump cavity is formed in the casing, and the pump cavity has a mouth;

The circulating water cooling structure also includes:

a pump shaft, the pump shaft is rotatably fixed in the pump cavity;

An internal magnetic assembly, the internal magnetic assembly is rotatably connected to the housing through the pump shaft;

A shaft sleeve, the shaft sleeve is set on the pump shaft, the shaft sleeve has an inner peripheral surface and an outer peripheral surface, the inner peripheral surface is provided with a plurality of first flow channels, and the outer peripheral surface is provided with a plurality of The second flow channel, the first flow channel and the second flow channel are connected to form a circulation flow channel, and the liquid entering the pump cavity circulates on the circulation flow channel; and

An impeller, the impeller is arranged at the front end of the inner magnetic assembly.

Optionally, the first flow channel is arranged spirally on the inner peripheral surface, and has a first liquid inlet end and a first liquid outlet end; the second flow channel is arranged vertically On the outer peripheral surface, it has a second liquid inlet port and a second liquid outlet port; the first liquid inlet port communicates with the second liquid outlet port, and the first liquid outlet port communicates with the first liquid outlet port. Second liquid inlet.

Optionally, an annular groove is provided at the front end along the circumferential direction of the inner peripheral surface, and the first liquid outlets are all connected to the annular groove; several return flows are arranged on the annular groove holes, the return holes run through the thickness direction of the sleeve and are respectively connected to the second liquid inlet ends.

Optionally, one second flow channel is arranged every 90° along the circumferential direction of the shaft sleeve; one said return hole is arranged every 90° along the circumferential direction of the annular groove; the four return holes are respectively connected to the four second flow channels; the number of the first flow channels is two, and the two first flow channels are arranged in a double helix on the inner peripheral surface.

Optionally, the circulating water cooling structure further includes a moving ring and a static ring, the moving ring is fixed on the front end of the inner magnetic assembly and corresponds to the mouth, the static ring is arranged on the inner periphery of the mouth , the static ring is sleeved on the outer periphery of the moving ring and the two are attached to each other, a filter gap is formed between the two, and the liquid enters the pump chamber through the filter gap.

Optionally, the outer surface of the inner magnetic assembly and the inner wall of the pump chamber enclose a liquid inlet gap, and a liquid outlet is formed at the joint between the inner magnetic assembly and the impeller; the inner magnetic assembly The middle part of the assembly is provided with a shaft hole running through its height direction, the rear end of the pump shaft is fixed to the rear end of the casing and extends forward into the shaft hole, and the sleeve is sleeved on the pump shaft The middle part is attached to the inner wall of the shaft hole; the liquid enters from the filter gap and then enters the pump chamber through the liquid inlet gap, and the liquid in the pump chamber can enter the shaft sleeve and circulate , the liquid flowing out of the shaft sleeve can flow out from the liquid outlet part.

Optionally, several evenly distributed first fitting parts are provided along the circumference of the mouth; several evenly distributed second fitting parts are arranged on the outer surface of the stationary ring along the circumference of the stationary ring, and the first The two matching parts run through the front and rear sides of the static ring; several of the second matching parts are respectively concave-convex matched to several of the first matching parts; a snap ring is also provided inside the mouth, and the snap ring It is fixed on the inner side of the mouth, and the snap ring is limited at the front end of the stationary ring.

Optionally, a ring of inner grooves is provided at the front end of the inner magnetic assembly along the circumference of the inner magnetic assembly, and several first bosses are arranged on the inner grooves, and several first protrusions are arranged on the rear end surface of the impeller. Two bosses, the rear end of the moving ring is provided with a number of first recesses, and the front end of the moving ring is provided with a number of second recesses; the moving ring is sleeved on the inner groove, and the moving ring The front and rear ends of the ring are respectively closely attached to the inner magnetic assembly and the impeller, and the first bosses are respectively embedded in the first recesses, and the second bosses are respectively embedded in the second recesses.

Optionally, 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 with a The impeller mounting groove; the center of the rear end face of the impeller is provided with an embedded sleeve, the inner side of the embedded sleeve is provided with a number of elastic barbs and a number of positioning grooves, and the outer surface of the first annular wall is provided with a number of Buckles and several positioning bosses; the embedded sleeve is embedded in the impeller installation groove, the elastic barbs are respectively buckled to the buckles, and the positioning bosses are embedded in the positioning grooves.

In order to achieve the above purpose, the magnetic pump provided by the embodiment of the present utility model has the above-mentioned circulating water cooling structure.

The above-mentioned one or more technical solutions in the circulating water cooling structure and the magnetic pump provided by the embodiments of the utility model have at least one of the following technical effects: when the circulating water cooling structure is working, the liquid enters the pump cavity, and the pump shaft is sleeved on the pump shaft by a shaft Sleeve, the inner and outer peripheral surfaces of the shaft sleeve are provided with a circulation channel, and the liquid entering the pump cavity circulates on the circulation channel, so as to perform water cooling and heat dissipation on the pump shaft and other parts to prevent burnout caused by lack of heat dissipation phenomenon occurs.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the accompanying drawings that are required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only the practical For some novel embodiments, those skilled in the art can also obtain other drawings based on these drawings without any creative work.

Fig. 1 is a structural schematic diagram of a circulating water cooling structure provided by an embodiment of the present invention.

FIG. 2 is a partially enlarged view of area A shown in FIG. 1 .

Fig. 3 is a schematic structural diagram of the shaft sleeve provided by the embodiment of the present invention.

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

Fig. 5 is an assembly diagram of the inner magnetic assembly, the impeller and the moving ring provided by the embodiment of the present invention.

Fig. 6 is a schematic structural diagram of the internal magnetic assembly provided by the embodiment of the present invention.

Fig. 7 is a schematic structural view of the impeller provided by the embodiment of the present invention.

Fig. 8 is a schematic structural diagram of the moving ring provided by the embodiment of the present invention.

Fig. 9 is an exploded view of the circulating water cooling structure provided by the embodiment of the present invention.

Fig. 10 is a schematic structural diagram of the magnetic pump provided by the embodiment of the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the embodiments of the present invention, but should not be construed as limitations of the present invention.

In the description of the embodiment of the utility model, it should be understood that if the embodiment of the utility model involves directional indications, such as directions or positions indicated by up, down, left, right, front, back, inside, outside, etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be configured in a specific orientation, and operation, and therefore cannot be construed as a limitation of the utility model.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the embodiments of the present utility model, unless otherwise clearly specified and limited, if there are terms such as "installation", "connection", "connection" and "fixation", they should be understood in a broad sense, for example, it can be a fixed connection, or It can be a detachable connection or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary; it can be the internal communication of two components or the interaction relationship between two components . Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present utility model according to specific situations.

In one embodiment of the present invention, as shown in Figures 1 to 9, a circulating water cooling structure 1 is provided, including a casing 11, a pump shaft 12, an inner magnetic assembly 13, a shaft sleeve 14 and an impeller 15. A pump cavity 111 is formed in the casing 11 , and the pump cavity 111 has a mouth 112 . The pump shaft 12 is rotatably fixed in the pump cavity 111 . The inner magnetic assembly 13 is rotatably connected to the casing 11 through the pump shaft 12 . The shaft sleeve 14 is sleeved on the pump shaft 12. The shaft sleeve 14 has an inner peripheral surface 141 and an outer peripheral surface 142. The inner peripheral surface 141 is provided with a plurality of first flow channels 143, and the outer peripheral surface 142 is provided with a plurality of second flow channels 144. , the first flow channel 143 and the second flow channel 144 are connected to form a circulation flow channel, and the liquid entering the pump chamber 111 circulates on the circulation flow channel. The impeller 15 is located at the front end of the inner magnetic assembly 13 . Specifically, the first flow channel 143 and the second flow channel 144 are preferably processed on the sleeve 14 in the form of grooves.

When the circulating water-cooling structure 1 is working, the liquid enters the pump chamber 111, and the pump shaft 12 is sleeved with a bushing 14, and the inner and outer peripheral surfaces of the bushing 14 are provided with circulating channels, and the liquid entering the pump chamber 111 Circulating flow on the circulation flow channel, so as to carry out water cooling and heat dissipation for parts such as the pump shaft 12, and prevent burnout caused by lack of heat dissipation.

In another embodiment of the present utility model, as shown in Figure 2, the circulating water cooling structure 1 also includes a moving ring 16 and a static ring 17, the moving ring 16 is fixed on the front end of the inner magnetic assembly 13 and corresponds to the mouth 112 , the static ring 17 is set on the inner periphery of the mouth 112 , the static ring 17 is sleeved on the outer periphery of the moving ring 16 and the two are attached to each other, and a filter gap 113 is formed between the two. During operation, the pressure in 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 moving ring 16 and the static ring 17, thereby preventing impurities from entering the pump chamber 111 through the filter gap 113, and playing the role of antifouling and filtering.

In another embodiment of the present invention, as shown in Figure 1, the outer surface of the inner magnetic assembly 13 of the circulating water cooling structure 1 and the inner wall of the pump chamber 111 form a liquid inlet gap 114, and the inner magnetic assembly 13 and A liquid outlet 115 is formed at the joint of the impeller 15 . The middle part of the inner magnetic assembly 13 is provided with a shaft hole 131 that runs through its height direction. The rear end of the pump shaft 12 is fixed to the rear end of the housing 11 and extends forward into the shaft hole 131. The shaft sleeve 14 is sleeved on the pump shaft 12. The middle part is attached to the inner wall of the shaft hole 131 . The liquid enters from the filter gap 113 and then enters the pump chamber 111 through the liquid inlet gap 114. The liquid in the pump chamber 111 can enter the shaft sleeve 14 and circulate, and the liquid flowing out of the shaft sleeve 14 can flow out from the liquid outlet 115, thereby maintaining the pump chamber 111. The convection between the liquid and the external liquid prevents the temperature of the liquid in the closed cavity from rising continuously.

In another embodiment of the present utility model, as shown in Fig. 3 and Fig. 4, the first channel 143 of the circulating water cooling structure 1 is spirally arranged on the inner peripheral surface 141, and has a first liquid inlet end 1431 and a first liquid outlet 1432. The second channel 144 is vertically arranged on the outer peripheral surface 142 and has a second liquid inlet 1441 and a second liquid outlet 1442 . The first liquid inlet 1431 communicates with the second liquid outlet 1442 , and the first liquid outlet 1432 communicates with the second liquid inlet 1441 . After the liquid enters the first flow channel 143 from the first liquid inlet port 1431, it is transported forward to the first liquid outlet port 1432, and then output from the first liquid outlet port 1432 to the second liquid inlet port 1441, and the liquid continues along the second flow channel. 144 is transported to the second liquid outlet 1442, and finally the liquid flowing out of the second liquid outlet 1442 is reintroduced into the first flow channel 143 through the first liquid inlet 1431, and the cycle reciprocates.

In another embodiment of the present utility model, as shown in Fig. 3 and Fig. 4, an annular groove 145 is provided at the front end along the circumferential direction of the inner peripheral surface 141, and the first liquid outlets 1432 are connected to the annular groove 145. Several return holes 146 are provided on the annular groove 145 , and the return holes 146 pass through the thickness direction of the sleeve 14 and are respectively connected to the second liquid inlets 1441 . When the liquid circulates, due to the centrifugal effect when the shaft sleeve 14 rotates, it is output from the first liquid outlet 1432 to the annular groove 145 and thrown out from the return hole 146 to the second liquid inlet 1441, and the subsequent liquid is also replenished to the first flow channel 143. Realize circulation.

In another embodiment of the present invention, as shown in FIG. 3 and FIG. 4 , in order to speed up the return flow, a second flow channel 144 is arranged every 90° along the circumferential direction of the sleeve 14 . A return hole 146 is arranged every 90° along the circumferential direction of the annular groove 145 . The four return holes 146 are respectively connected to the four second channels 144 .

In another embodiment of the present utility model, as shown in FIG. 3 and FIG. 4 , the number of first flow channels 143 of the circulating water cooling structure 1 is two, and the two first flow channels 143 are arranged in a double helix shape. 141 on the peripheral surface. When the shaft sleeve 14 rotates, the two first flow channels 143 in the double helix shape can transport the liquid forward faster and speed up the flow of the liquid.

In another embodiment of the present utility model, as shown in Figures 5 to 8, in order to improve the combination tightness of the moving ring 16, the inner magnetic assembly 13 and the impeller 15, a front end is provided along the circumference of the inner magnetic assembly 13. The inner groove position 132, the inner groove position 132 is provided with a number of first bosses 133, the rear end surface of the impeller 15 is provided with a number of second bosses 151, specifically, a plurality of second bosses 151 along the impeller 15 The circumferential direction is evenly arranged on the outer periphery of the middle part of the impeller 15 . The rear end of the moving ring 16 is provided with a plurality of first recesses 161 , and the front end of the moving ring 16 is provided with a plurality of second recesses 162 . When the moving ring 16 is assembled, the moving ring 16 is placed on the inner groove position 132, the front and rear ends of the moving ring 16 are respectively attached to the inner magnetic assembly 13 and the impeller 15, and the first bosses 133 are respectively embedded in the first concaves 161 , the second protrusions 151 are embedded in the second recesses 162 respectively. During operation, the moving ring 16 , the inner magnetic assembly 13 and the impeller 15 can rotate synchronously, which enhances the structural stability of the moving ring 16 .

In another embodiment of the present utility model, as shown in Figures 5-8, the front end of the inner magnetic assembly 13 of the circulating water cooling structure 1 is provided with a first annular wall 134 and a second annular wall 135, the second The annular wall 135 is concentric with the first annular wall 134 and an impeller mounting groove 136 is formed therebetween. The center of the rear end surface of the impeller 15 is provided with an embedded sleeve 152, and the inner side of the embedded sleeve 152 is provided with several elastic barbs 153 and several positioning grooves 154, and the outer surface of the first annular wall 134 is provided with several buckles 137 and Several positioning bosses 138. The impeller 15 is fixed to the inner magnetic assembly 13 by buckle installation. During installation, the insert sleeve 152 is embedded in the impeller installation groove 136, the elastic barbs 153 are respectively engaged with the buckle positions 137, and the positioning boss 138 is embedded in the positioning groove 154. Simple, combined with strong advantages.

In another embodiment of the present utility model, as shown in Fig. 2 and Fig. 9, several evenly distributed first matching parts 1121 are provided along the circumferential direction of the mouth part 112; There are several evenly distributed second matching parts 171, and the second matching parts 171 run through the front and rear sides of the static ring; several second matching parts 171 are respectively concave-convex matched to several first matching parts 1121; inside the mouth part 112 A snap ring 19 is also provided, and the snap ring 19 is fixed on the inner side of the mouth portion 112 , and the snap ring 19 is limited at the front end of the static ring 17 . The fixing and orientation of the stationary ring 17 are realized by the concave-convex fitting of the several second fitting portions 171 to the several first fitting portions 1121 respectively.

Further, a first matching portion 1121 is provided every 90° along the circumference of the mouth portion 112 . A second matching portion 171 is provided every 90° along the circumferential direction of the stationary ring 17 . Fitting gaps are formed between the four first matching parts 1121 and the four second matching parts 171, so that the static ring 17 can be displaced in the four directions of up, down, left and right, so that the static ring 17 can work Automatically find the center to ensure the concentricity of the moving ring and the static ring 17, and avoid jamming due to eccentricity. Specifically, the four directions corresponding to the four second matching portions 171 are four directions of up, down, left and right respectively.

It should be understood that the first matching portion 1121 and the first matching portion 1121 are not limited to four, and one (three) every 120°, or one (eight) every 45°, can also be implemented in multiple Displacement in the direction, and realize the automatic centering of the static ring.

Specifically, the first matching portion 1121 is a square boss, and the second matching portion 171 is a square groove. The square boss can be embedded in the square groove along the circumferential direction of the rotation of the moving ring, which fits closely and is easy to assemble.

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

In addition, in order to fix the retaining spring 19 and prevent the retaining spring 19 from falling out, a circle of engaging grooves 1122 is provided along the circumference of the mouth portion 112, and a circle of engaging protrusions 191 are arranged on the periphery of the retaining spring 19, and the engaging protrusions 191 are inserted into the engaging grooves 1122 Inside. A plurality of notches 192 are defined on the locking protrusion 191 .

In one embodiment of the present invention, as shown in FIG. 10 , a magnetic pump 2 is provided, which has the above-mentioned circulating water cooling structure 1 . The circulating water cooling structure 1 can effectively dissipate heat and cool down the parts in the pump chamber 111, avoid burning out, and improve the service life.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims

A circulating water cooling structure, comprising:

A casing, a pump cavity is formed in the casing, and the pump cavity has a mouth;

It is characterized in that it also includes:

a pump shaft, the pump shaft is rotatably fixed in the pump cavity;

An internal magnetic assembly, the internal magnetic assembly is rotatably connected to the housing through the pump shaft;

A shaft sleeve, the shaft sleeve is set on the pump shaft, the shaft sleeve has an inner peripheral surface and an outer peripheral surface, the inner peripheral surface is provided with a plurality of first flow channels, and the outer peripheral surface is provided with a plurality of The second flow channel, the first flow channel and the second flow channel are connected to form a circulation flow channel, and the liquid entering the pump cavity circulates on the circulation flow channel; and

An impeller, the impeller is arranged at the front end of the inner magnetic assembly.
The circulating water cooling structure according to claim 1, characterized in that, the first flow channel is helically arranged on the inner peripheral surface, and has a first liquid inlet end and a first liquid outlet end; The second flow channel is vertically arranged on the outer peripheral surface, and has a second liquid inlet end and a second liquid outlet end; the first liquid inlet end communicates with the second liquid outlet end, The first liquid outlet is connected to the second liquid inlet.
The circulating water cooling structure according to claim 2, wherein an annular groove is provided at the front end along the circumferential direction of the inner peripheral surface, and the first liquid outlets are connected to the annular groove; The annular groove is provided with several return holes, and the return holes pass through the thickness direction of the shaft sleeve and are connected to the second liquid inlet respectively.
The circulating water cooling structure according to claim 3, characterized in that, one second channel is arranged every 90° along the circumferential direction of the shaft sleeve; The return holes; the four return holes are respectively connected to the four second flow channels; the number of the first flow channels is two, and the two first flow channels are arranged in a double helix in the inner Zhou surface.
The circulating water cooling structure according to any one of claims 1-4, further comprising a moving ring and a static ring, the moving ring is fixed at the front end of the inner magnetic assembly and corresponds to the mouth , the static ring is set on the inner circumference of the mouth, the static ring is sleeved on the outer circumference of the moving ring and the two are attached to each other, a filter gap is formed between the two, and the liquid enters through the filter gap inside the pump chamber.
The circulating water cooling structure according to claim 5, characterized in that, the outer surface of the inner magnetic assembly and the inner wall of the pump cavity form a liquid inlet gap, and the bonding between the inner magnetic assembly and the impeller A liquid outlet is formed at the center; the middle part of the internal magnetic assembly is provided with a shaft hole passing through its height direction, and the rear end of the pump shaft is fixed to the rear end of the housing and extends forward into the shaft hole. The bushing is set in the middle of the pump shaft and fits on the inner wall of the shaft hole; the liquid enters from the filter gap and then enters the pump cavity through the liquid inlet gap, and the liquid in the pump cavity The liquid can enter the shaft sleeve and circulate, and the liquid can flow out of the shaft sleeve from the liquid outlet part.
The circulating water cooling structure according to claim 5 or 6, characterized in that a number of uniformly distributed first matching parts are provided along the circumferential direction of the mouth; Several evenly distributed second fitting parts, the second fitting parts run through the front and rear sides of the static ring; several of the second fitting parts are concave-convex fitted to several of the first fitting parts; A circlip is also provided inside the mouth, the circlip is fixed inside the mouth, and the circlip is limited to the front end of the static ring.
According to the circulating water cooling structure according to claim 5 or 6, it is characterized in that a ring of inner grooves is provided at the front end of the inner magnetic assembly along the circumference of the inner magnetic assembly, and a plurality of first protrusions are arranged on the inner grooves. The rear end surface of the impeller is provided with a number of second bosses, the rear end of the moving ring is provided with a number of first recesses, and the front end of the moving ring is provided with a number of second recesses; the moving ring Set on the inner groove position, the front and rear ends of the moving ring are respectively closely attached to the inner magnetic assembly and the impeller, and the first bosses are respectively embedded in the first recesses, the The second protrusions are respectively embedded in the second recesses.
The circulating water cooling structure according to any one of claims 1-4, characterized in that, the front end of the inner magnetic assembly is provided with a first annular wall and a second annular wall, and the second annular wall and the The first annular wall is concentrically arranged and an impeller installation groove is formed between them; an embedded sleeve is provided at the center of the rear end surface of the impeller, and a number of elastic barbs and a number of positioning recesses are provided on the inner side of the embedded sleeve. The outer surface of the first annular wall is provided with several buckles and several positioning bosses; the embedded sleeve is embedded in the impeller installation groove, and the elastic barbs are respectively fastened to the buckles, and the The positioning boss is embedded in the positioning groove.
The magnetic pump is characterized in that it has the circulating water cooling structure according to any one of claims 1-9.