CN117489604B

CN117489604B - Three-body heat-preservation magnetic pump

Info

Publication number: CN117489604B
Application number: CN202410001916.2A
Authority: CN
Inventors: 何佳; 冯长青; 王满亮
Original assignee: Jiangsu Hanna Pump Industry Co ltd
Current assignee: Jiangsu Hanna Pump Industry Co ltd
Priority date: 2024-01-02
Filing date: 2024-01-02
Publication date: 2024-04-02
Anticipated expiration: 2044-01-02
Also published as: CN117489604A

Abstract

The invention discloses a three-body heat-preservation magnetic pump, which comprises a base, a pump body, a connecting frame, a bearing box and a driving motor, wherein the pump body, the connecting frame, the bearing box and the driving motor are sequentially arranged at the top end of the base from left to right; according to the invention, a three-body heat-insulating structure of the magnetic pump is formed through the first heat-insulating jacket, the second heat-insulating jacket and the third heat-insulating jacket, the overall heat-insulating effect is improved, external cooling liquid is injected into the cooling coil pipe through the liquid inlet pipe and is discharged from the liquid outlet pipe, so that heat on the main shaft is taken away by using the circulating cooling liquid, meanwhile, cooling air is injected into the bearing box through the air inlet pipe and is discharged from the air outlet pipe, further accelerated cooling of the main shaft is realized, the main shaft is prevented from being overheated due to friction, in addition, trapezoidal limiting blocks are connected in storage grooves on the front side and the rear side of the base through limiting springs, and through grooves matched with the trapezoidal limiting blocks are formed on the front side and the rear side of the base, so that the pump body, the bearing box and the driving motor can be conveniently dismounted on the top end of the base through the base.

Description

Three-body heat-preservation magnetic pump

Technical Field

The invention relates to the technical field of magnetic pumps, in particular to a three-body heat-preservation magnetic pump.

Background

The magnetic pump is also called as magnetic drive pump, and is a novel non-sealing pump for realizing non-contact transmission of moment by using permanent magnetic transmission technology principle, and the driving shaft and the driven shaft of the novel non-sealing pump are not mechanically connected, and the structure does not need dynamic sealing, so that the non-sealing pump has no sealing, can realize zero leakage, is particularly suitable for conveying flammable, explosive, volatile, toxic, corrosive and noble liquid, is mainly used for occasions requiring that the pump can only slightly leak or not leak, and occasions with high vacuum which is difficult to be qualified in mechanical sealing, and in recent years, the pump has been widely applied in petroleum, chemical industry, electroplating, pharmacy, food, paper selection, printing and dyeing industries and the like abroad.

The heat-preservation magnetic pump is used as a derivative of a common magnetic pump, a jacket is welded and manufactured on the periphery of the common magnetic pump to form the magnetic pump with a heat-preservation function, the middle part of the heat-preservation magnetic pump fuses self-made parts such as a pump cover and a bearing seat of the common magnetic pump into a heat-preservation intermediate body as a whole, and the heat-preservation intermediate body plays a role of supporting a rotor inside the pump in the heat-preservation magnetic pump.

At present, most of common magnetic pumps in the market are single in structure, are generally only used for pump body or connecting frame heat preservation, have poor heat preservation effect, can only be suitable for chemical material transportation with solidification temperature less than 50 ℃, have limited application range, and the existing magnetic pump can not effectively cool down and cool down a main shaft in a bearing box, so that friction is easily generated between the main shaft in the bearing box and a bearing in the rotating process of the main shaft, high temperature is generated, thermal expansion difference is large, normal operation of the main shaft is easily affected, and in addition, all components in the existing magnetic pump are fixedly arranged on a base through bolts, so that convenient disassembly and assembly work can not be carried out on all components of the magnetic pump, and the magnetic pump is inconvenient to use.

Disclosure of Invention

Aiming at the problems, the invention aims to provide a three-body heat-preservation magnetic pump, which solves the problems that the existing magnetic pump is generally only used for preserving heat of a pump body or a connecting frame, the heat-preservation effect is poor, the application range is limited, the main shaft in the bearing box cannot be effectively cooled, the main shaft in the bearing box is easy to rub with a bearing to generate high temperature in the rotating process of the main shaft in the bearing box, the thermal expansion difference is large, and the components of the magnetic pump cannot be conveniently disassembled and assembled.

In order to achieve the purpose of the invention, the invention is realized by the following technical scheme: the utility model provides a three-body heat preservation magnetic drive pump, includes the base and installs in proper order in the pump body, link, bearing box and the driving motor on base top from a left side to the right side, one side that the pump body is close to the link is through the bolt fastening has the pump cover, both ends are respectively through bolt and pump cover and bearing box fixed connection about the link, the inside main shaft that is equipped with through driving motor drive rotation of bearing box, the outside cover of main shaft is equipped with cooling coil, both ends are equipped with feed liquor pipe and drain pipe that runs through to the bearing box outside respectively about the cooling coil, both ends are fixed with the air-supply line and go out the tuber pipe respectively about the bearing box, the outside of pump body, pump cover and link has cup jointed first heat preservation jacket, second heat preservation jacket and third heat preservation jacket respectively, the bottom plate that the gomphosis was installed on base top is all passed through to the bolt fastening in pump body, bearing box and driving motor bottom, the mounting groove with the bottom plate adaptation is seted up on the base top, the inside trapezoidal stopper that extends the groove through spacing spring coupling, trapezoidal stopper that is located one side outside the groove is the groove and is outside the design, the trapezoidal stopper is equipped with the recess that leads to the fact the side of leading to the side of the extension groove with the extension groove.

The further improvement is that: the main shaft is close to the inboard outer magnetic coupling that is located the link, outer magnetic coupling inside wall is fixed with outer magnet steel subassembly, one side that the pump cover is close to the link is fixed with the spacer sleeve that is located outer magnet steel subassembly inboard through the bolt fastening, the inside axle sleeve that is equipped with of pump cover, the inboard rotation of axle sleeve is connected with the pump shaft, the pump shaft is located the internal one end of pump and is fixed with the impeller, the one end that the impeller was kept away from to the pump shaft is fixed with interior magnetic coupling, be fixed with the interior magnet steel subassembly with outer magnet steel subassembly adaptation on the interior magnetic coupling lateral wall.

The further improvement is that: the sliding bearings sleeved on the main shaft are fixed on two sides of the inside of the bearing box, the pump body, the pump cover and the impeller are made of PFA materials, and the shaft sleeve and the sliding bearings are made of pressureless sintered silicon carbide materials.

The further improvement is that: the side wall of the pump body, which is far away from one side of the pump cover, is provided with a liquid inlet, the top end of the pump body is provided with a liquid outlet, the impeller is fixed on the pump shaft through an impeller nut, and one side of the shaft sleeve, which is close to the impeller, is fixed with a thrust ring which is contacted with the impeller.

The further improvement is that: the ejection mechanism comprises an ejector block which is connected to the inner side of the through groove in a sliding mode, a pressing rod is fixed at one end, far away from the trapezoid limiting block, of the ejector block, and a button is fixed at one end, far away from the ejector block, of the pressing rod, extending to the outer portion of the through groove.

The further improvement is that: limiting grooves are formed in the inner walls of the upper side and the lower side of the through groove, limiting sliding blocks which are matched with the limiting grooves and extend to the inner sides of the limiting grooves are fixed at the top ends and the bottom ends of the top blocks, and the length of each limiting groove is larger than that of each trapezoid limiting block extending to the through groove.

The further improvement is that: and a driving coupler is arranged between the bearing box and the driving motor, and one end of the main shaft, which is close to the driving motor, extends to the outside of the bearing box and is connected with an output end rotating shaft of the driving motor through the driving coupler.

The further improvement is that: the isolation sleeve is characterized in that a reinforcing sleeve made of PEEK (polyether-ether-ketone) is fixed on the outer side of the isolation sleeve, fixing blocks are fixedly welded on the outer walls of the periphery of the base, and fixing bolts penetrate through the fixing blocks in a threaded mode.

The beneficial effects of the invention are as follows: according to the invention, the first heat-preserving jacket, the second heat-preserving jacket and the third heat-preserving jacket are sleeved outside the pump body, the pump cover and the connecting frame to form a three-body heat-preserving structure of the magnetic pump, so that the whole coverage of the magnetic pump is finished, the heat-preserving effect is improved, the magnetic pump is suitable for conveying chemical materials in a larger temperature range, and the application range is enlarged;

the external cooling liquid is injected into the cooling coil pipe through the liquid inlet pipe and is discharged from the liquid outlet pipe, so that heat on the main shaft is taken away by using the circulating cooling liquid, and meanwhile, external cooling air is injected into the bearing box through the air inlet pipe and is discharged from the air outlet pipe, so that the main shaft is further cooled in an accelerating way, and the main shaft is prevented from influencing the normal operation due to friction and overheat;

in addition, the trapezoidal limiting blocks are connected in the storage grooves on the front side and the rear side of the bottom plate through the limiting springs, and through grooves matched with the trapezoidal limiting blocks are formed in the front side and the rear side of the base, so that the pump body, the bearing box and the driving motor can be conveniently and rapidly disassembled and assembled on the top end of the base through the bottom plate.

Drawings

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is an enlarged view of the invention at A;

fig. 3 is a side cross-sectional view of the base of the present invention.

Wherein: 1. a base; 2. a pump body; 3. a connecting frame; 4. a bearing housing; 5. a driving motor; 6. a pump cover; 7. a main shaft; 8. a cooling coil; 9. a liquid inlet pipe; 10. a liquid outlet pipe; 11. an air inlet pipe; 12. an air outlet pipe; 13. a first heat-insulating jacket; 14. a second heat-insulating jacket; 15. a third heat-insulating jacket; 16. a bottom plate; 17. a storage groove; 18. a trapezoid limiting block; 19. a through groove; 20. an outer magnetic coupling; 21. an outer magnetic steel assembly; 22. a spacer sleeve; 23. a shaft sleeve; 24. a pump shaft; 25. an impeller; 26. an inner magnetic coupling; 27. an inner magnetic steel component; 28. a sliding bearing; 29. a liquid inlet; 30. a liquid outlet; 31. an impeller nut; 32. a thrust collar; 33. a top block; 34. pressing a pressing rod; 35. a limit groove; 36. a limit sliding block; 37. a drive coupling; 38. a reinforcing sleeve; 39. a fixed block; 40. and (5) fixing bolts.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1, 2, 3, the present embodiment provides a three-body heat-insulation magnetic pump, which is composed of a base 1, a pump body 2, a connecting frame 3, a bearing box 4 and a driving motor 5, wherein the pump body 2, the connecting frame 3, the bearing box 4 and the driving motor 5 are all installed at the top end of the base 1 and are sequentially arranged from left to right, the right end of the pump body 2 is fixedly provided with a pump cover 6 through bolts, the pump body 2 is in sealing connection with the pump cover 6, the left end of the connecting frame 3 is fixedly provided with the pump cover 6 through bolts, the connecting frame 3 is in sealing connection with the pump cover 6, the right end of the connecting frame 3 is fixedly provided with the bearing box 4 through bolts, the connecting frame 3 is in sealing connection with the bearing box 4, a spindle 7 is rotatably connected inside the bearing box 4, the spindle 7 is driven to rotate through the driving motor 5, the left end and the right end of the spindle 7 extends out of the bearing box 4, the bearing box 4 is internally provided with a cooling coil pipe 8 sleeved outside the main shaft 7 and used for accelerating the cooling of the main shaft 7, the upper end of the cooling coil pipe 8 is provided with a liquid inlet pipe 9, the lower end of the cooling coil pipe 8 is provided with a liquid outlet pipe 10, one ends of the liquid inlet pipe 9 and the liquid outlet pipe 10, which are far away from the cooling coil pipe 8, penetrate through the outside of the bearing box 4, the liquid inlet pipe 9 is used for injecting external cooling liquid into the cooling coil pipe 8 and discharging the external cooling liquid from the liquid outlet pipe 10, so that the circulating cooling liquid is utilized to take away the heat on the main shaft 7, the accelerated cooling of the main shaft 7 is realized, the normal operation of the main shaft 7 is prevented from being influenced by friction and overheat, the top end of the bearing box 4 is also fixed with an air inlet pipe 11, the bottom end of the bearing box 4 is fixed with an air outlet pipe 12, the external cooling air is injected into the bearing box 4 by the air inlet pipe 11 and discharged from the air outlet pipe 12, the cooling of the main shaft 7 is further accelerated by air cooling, the outside of the main shaft 7 is sleeved outside the pump body 2 with a first heat preservation jacket 13, the outside of the pump cover 6 is sleeved with a second heat-insulating jacket 14, the outside of the connecting frame 3 is sleeved with a third heat-insulating jacket 15, a three-body heat-insulating structure is formed by the first heat-insulating jacket 13, the second heat-insulating jacket 14 and the third heat-insulating jacket 15, the whole coverage of the magnetic pump is finished, the heat-insulating effect is improved, the magnetic pump is applicable to chemical material transportation in a larger temperature range, the application range is expanded, the bottom plate 16 is fixedly arranged at the bottom end of the pump body 2, the bearing box 4 and the driving motor 5 through bolts, the bottom plate 16 is embedded and arranged at the top end of the base 1, the top end of the base 1 is provided with a mounting groove matched with the bottom plate 16 and used for accommodating the bottom plate 16, the middle positions of the front side wall and the rear side wall of the bottom plate 16 are provided with accommodating grooves 17, the inner walls of one side opposite to the front side and the rear adjacent accommodating grooves 17 are respectively fixed with a limiting spring and a trapezoidal limiting block 18 is fixedly arranged through the limiting spring, the end of the trapezoid stopper 18 far away from the limit spring extends out of the containing groove 17, one side of the trapezoid stopper 18 outside the containing groove 17 is inclined and extends into the through groove 19 under the action of the limit spring, the through grooves 19 are formed in the front side and the rear side of the base 1, the positions of the through grooves 19 correspond to the containing groove 17 one by one, the ejection mechanism is in sliding connection with the trapezoid stopper 18 and is used for pushing the trapezoid stopper 18 to retract and rebound into the containing groove 17, the ejection mechanism in the through grooves 19 on the front side and the rear side is utilized for ejecting the trapezoid stopper 18 out of the through groove 19 so as to release the clamping connection of the trapezoid stopper 18 to the through groove 19, the base plate 16 is directly taken out from the top end of the base 1, the pump body 2, the bearing box 4 and the driving motor 5 can be conveniently detached, the base plates 16 are pressed into the mounting grooves on the top end of the base 1, the trapezoid stopper 18 is clamped into the through groove 19, the pump body 2, the bearing box 4 and the driving motor 5 can be conveniently installed.

The main shaft 7 is close to one end of link 3 and is fixed with outer magnetic coupling 20, and outer magnetic coupling 20 is located the inboard of link 3, outer magnetic coupling 20 inside wall still is fixed with outer magnet steel subassembly 21, then the right side of pump cover 6 is fixed with spacer 22 through the bolt, and spacer 22 is located outer magnet steel subassembly 21 inboard, still be fixed with axle sleeve 23 inside pump cover 6, and the inboard rotation of axle sleeve 23 is connected with pump shaft 24, the left end of pump shaft 24 is located pump body 2 and is fixed with impeller 25 through impeller nut 31, the right-hand member of pump shaft 24 is fixed with the interior magnetic coupling 26 that is located spacer 22 inboard, be fixed with the interior magnet steel subassembly 27 of outer magnet steel subassembly 21 adaptation on the lateral wall of interior magnetic coupling 26, drive main shaft 7 rotation by driving motor 5, then the outer magnet steel subassembly 20 of main shaft 7 drive assembly at its left end rotates along with the rotation, interior magnet steel subassembly 27 drives outer magnet steel subassembly 20 and 24 rotation through magnetism conduction cooperation outer magnet steel subassembly 21 rotation, finally, drive impeller 25 in pump body 2 and pump shaft 21 rotation, outer magnet steel subassembly 21 is the magnet steel subassembly is the magnetic sheet Gao Wenshan.

The sliding bearings 28 are fixed on two sides of the inside of the bearing box 4, the sliding bearings 28 are sleeved on the main shaft 7, the pump body 2, the pump cover 6 and the impeller 25 are made of PFA materials, the bearing box has good temperature resistance and corrosion resistance, the shaft sleeve 23 and the sliding bearings 28 are made of pressureless sintered silicon carbide materials, and the corrosion resistance is comprehensive and more wear-resistant.

The lateral wall that pump body 2 was kept away from pump cover 6 one side has been seted up and has been used for to the injection into the pump body 2 to wait to carry chemical material's inlet 29, and the liquid outlet 30 that is used for discharging chemical material to the pump body 2 has been seted up on the pump body 2 top, and the axle sleeve 23 left side is fixed with the thrust collar 32 that contacts with impeller 25, prevents that the magnetic drive pump from leading to wearing and tearing and leaking because of the friction of impeller 25 and magnetic drive pump shell in the operation in-process.

The ejection mechanism comprises an ejector block 33, the ejector block 33 is slidably connected to the inner side of the through groove 19, one end, far away from the trapezoid limiting block 18, of the ejector block 33 is fixedly provided with a pressing rod 34 extending to the outer portion of the through groove 19, one end, located at the outer portion of the through groove 19, of the pressing rod 34 is fixedly provided with a button, and a user conveniently presses the ejector block 33 to slide in the through groove 19 through the button and ejects the trapezoid limiting block 18 from the through groove 19.

Limiting grooves 35 are formed in the inner walls of the upper side and the lower side of the through groove 19, limiting sliding blocks 36 matched with the limiting grooves 35 are fixed at the top end and the bottom end of the top block 33, the limiting sliding blocks 36 extend to the inner sides of the limiting grooves 35, the limiting sliding blocks 36 are limited through the limiting grooves 35 so as to ensure stability in the moving process of the top block 33, and the length of the limiting grooves 35 is larger than that of the trapezoid limiting blocks 18 extending into the through groove 19, so that excessive displacement of the top block 33 is avoided.

A driving coupler 37 is arranged between the bearing box 4 and the driving motor 5, and the right end of the main shaft 7 is connected with the output end of the driving motor 5 through the driving coupler 37 in a rotating way so as to drive the main shaft 7 to rotate through the driving motor 5.

The isolation sleeve 22 is fixed with the reinforcement sleeve 38 that PEEK material was made in the outside, plays the effect of structural reinforcement to isolation sleeve 22, and the intermediate position of outer wall all is fixed welding around the base 1 has fixed block 39, all screw thread runs through on the fixed block 39 has fixing bolt 40, through fixing bolt 40 to with base 1 fixed mounting on corresponding desktop.

When the three-body heat-preservation magnetic pump is used, firstly, power is supplied and a driving motor 5 is started to drive a rotating shaft at the output end of the three-body heat-preservation magnetic pump to rotate, the rotating shaft at the output end of the driving motor 5 rotates and simultaneously drives a main shaft 7 in a bearing box 4 to rotate through a driving coupler 37, then the main shaft 7 drives an outer magnetic coupler 20 assembled at the left end of the main shaft to rotate and enables an outer magnetic steel assembly 21 to rotate together, at the moment, an inner magnetic steel assembly 27 on the inner side of a spacer 22 is matched with the outer magnetic steel assembly 21 to rotate through magnetic conduction, the outer magnetic steel assembly 21 rotates and simultaneously drives the outer magnetic coupler 20 to rotate, then the outer magnetic coupler 20 drives a pump shaft 24 assembled at the left end of the outer magnetic steel assembly to rotate, and then the pump shaft 24 drives an impeller 25 at the left end of the outer magnetic coupler to rotate in a pump body 2, then liquid is conveyed from a liquid inlet 29 of the pump body 2, and finally the liquid is conveyed out from a liquid outlet 30 under the driving of the impeller 25, so that liquid is conveyed;

when the pump body 2, the bearing box 4 and the driving motor 5 are required to be disassembled from the top end of the base 1, a user ejects the trapezoid limiting block 18 out of the through groove 19 by using ejection mechanisms in the through grooves 19 on the front side and the rear side so as to release the clamping connection of the trapezoid limiting block 18 to the through groove 19, then the bottom plates 16 are directly taken out from the top end of the base 1, the disassembly of the pump body 2, the bearing box 4 and the driving motor 5 can be completed, each bottom plate 16 is pressed into the mounting groove on the top end of the base 1 during the mounting, at the moment, the trapezoid limiting block 18 is retracted into the storage groove 17 due to the fact that the inclined surface of the trapezoid limiting block 18 is extruded by the base 1 in the descending process, when the trapezoid limiting block 18 descends into the through groove 19, the trapezoid limiting block 18 is ejected out of the through groove 19 under the action of limiting springs, and the clamping connection is realized, and the mounting of the pump body 2, the bearing box 4 and the driving motor 5 is completed.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A three-body heat preservation magnetic drive pump is characterized in that: the device comprises a base (1) and a pump body (2), a connecting frame (3), a bearing box (4) and a driving motor (5) which are sequentially arranged at the top end of the base (1) from left to right, wherein one side of the pump body (2) close to the connecting frame (3) is fixedly provided with a pump cover (6) through bolts, the left end and the right end of the connecting frame (3) are respectively fixedly connected with the pump cover (6) and the bearing box (4) through bolts, a main shaft (7) which is driven to rotate through the driving motor (5) is arranged in the bearing box (4), a cooling coil (8) is sleeved outside the main shaft (7), liquid inlet pipes (9) and liquid outlet pipes (10) which penetrate through the outer parts of the bearing box (4) are respectively arranged at the upper end and the lower end of the cooling coil (8), an air inlet pipe (11) and an air outlet pipe (12) are respectively fixed at the upper end and the lower end of the bearing box (4), a first heat preservation jacket (13), a second heat preservation jacket (14) and a third heat preservation jacket (15) are respectively arranged outside the pump body (2), the pump cover (6) and the connecting frame (3), a bottom plate (16) is sleeved at the bottom end of the pump body (1) through bolts which are fixedly arranged at the bottom end of the base (16) and the base (1), the utility model discloses a pump comprises a base (16), a connecting frame (3) and a pump cover (6), wherein the front side and the rear side of the base (16) are respectively provided with a containing groove (17), a trapezoid limiting block (18) extending out of the containing groove (17) is connected inside the containing groove (17) through a limiting spring, one side of the trapezoid limiting block (18) outside the containing groove (17) is in an inclined design, through grooves (19) matched with the containing groove (17) are respectively provided on the front side and the rear side of the base (1), an ejection mechanism which is in conflict with the trapezoid limiting block (18) is connected inside the through grooves (19), one end of a main shaft (7) close to the connecting frame (3) is fixedly provided with an outer magnetic coupling (20) which is positioned on the inner side of the connecting frame (3), an outer magnetic steel component (21) is fixedly arranged on the inner side wall of the outer magnetic coupling (20), one side of a pump cover (6) close to the connecting frame (3) is fixedly provided with a spacer sleeve (22) which is positioned on the inner side of the outer magnetic steel component (21) through bolts, the inner side of the pump cover (6) is provided with a pump shaft (23), the inner side of the shaft sleeve (23) is rotationally connected with a pump (24), one end of the pump shaft (24) is positioned in the pump body (2) and is fixedly provided with a pump shaft (25) which is fixedly provided with a pump shaft (25), an inner magnetic steel component (27) matched with the outer magnetic steel component (21) is fixed on the outer side wall of the inner magnetic coupling (26).

2. The three-body heat preservation magnetic pump of claim 1, wherein: sliding bearings (28) sleeved on the main shaft (7) are fixed on two sides of the inside of the bearing box (4), the pump body (2), the pump cover (6) and the impeller (25) are made of PFA materials, and the shaft sleeve (23) and the sliding bearings (28) are made of pressureless sintered silicon carbide materials.

3. The three-body heat preservation magnetic pump of claim 1, wherein: the side wall of the pump body (2) far away from one side of the pump cover (6) is provided with a liquid inlet (29), the top end of the pump body (2) is provided with a liquid outlet (30), the impeller (25) is fixed on the pump shaft (24) through an impeller nut (31), and one side of the shaft sleeve (23) close to the impeller (25) is fixed with a thrust ring (32) in contact with the impeller (25).

4. The three-body heat preservation magnetic pump of claim 1, wherein: the ejection mechanism comprises an ejector block (33) which is connected to the inner side of the through groove (19) in a sliding mode, a pressing rod (34) is fixed at one end, far away from the trapezoid limiting block (18), of the ejector block (33), and one end, far away from the ejector block (33), of the pressing rod (34) extends to the outer portion of the through groove (19) and is fixedly provided with a button.

5. The three-body heat preservation magnetic pump of claim 4, wherein: limiting grooves (35) are formed in the inner walls of the upper side and the lower side of the through groove (19), limiting sliding blocks (36) which are matched with the limiting grooves (35) and extend to the inner sides of the limiting grooves (35) are fixed at the top end and the bottom end of the top block (33), and the length of each limiting groove (35) is larger than that of each trapezoid limiting block (18) extending to the through groove (19).

6. The three-body heat preservation magnetic pump of claim 1, wherein: a driving coupler (37) is arranged between the bearing box (4) and the driving motor (5), and one end of the main shaft (7) close to the driving motor (5) extends to the outside of the bearing box (4) and is connected with an output end rotating shaft of the driving motor (5) through the driving coupler (37).

7. The three-body heat preservation magnetic pump of claim 1, wherein: the isolation sleeve is characterized in that a reinforcing sleeve (38) made of PEEK materials is fixed on the outer side of the isolation sleeve (22), fixing blocks (39) are fixedly welded on the outer wall of the periphery of the base (1), and fixing bolts (40) penetrate through all threads of the fixing blocks (39).