High-speed magnetic drive centrifugal pump

Abstract

The invention discloses a high-speed magnetic drive centrifugal pump which comprises a shell and a fixed shell, an impeller is installed in a space formed by the shell and the fixed shell, the impeller is rotationally arranged in the shell and the fixed shell, an inlet is formed in the end, away from the fixed shell, of the shell, an outlet is formed in the side face of the shell, and the impeller comprises a top plate, a bottom plate and blades. Wherein one blade can incline along with the increase of the rotating speed of the impeller, a connecting shaft is connected to the bottom plate, a first magnetic block is connected to the connecting shaft, a driving motor is further included, the driving motor is in driving connection with a second magnetic block, and the first magnetic block is correspondingly located on the inner side of the second magnetic block. The angles of the blades can be changed, collision between the blades and particles in the vertical direction is reduced, and the blades are protected.

Description

Technical Field

[0001] The present invention relates to the technical field of centrifugal pumps, and more specifically, to a high-speed magnetically driven centrifugal pump. Background Art

[0002] A magnetic centrifugal pump is a centrifugal pump that uses magnetic transmission technology to achieve contactless torque transmission. Based on magnetic transmission technology, the motor drives the outer magnetic rotor to rotate, and the magnetic field penetrates the isolation sleeve, driving the inner magnetic rotor and impeller to rotate synchronously to achieve liquid transportation. The solid particles move relative to each other on the impeller surface, producing a filing effect, causing wear on the impeller surface. The faster the impeller speed, the more severe the wear of the impeller will be, resulting in a shorter service life of the impeller and the need for frequent replacement. Summary of the invention

[0003] The object of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a high-speed magnetically driven centrifugal pump.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] The present invention discloses a high-speed magnetically driven centrifugal pump, comprising a shell and a fixed shell, an impeller is installed in the space formed by the shell and the fixed shell, the impeller is rotatably arranged in the shell and the fixed shell, an inlet is provided at one end of the shell away from the fixed shell, an outlet is provided at the side of the shell, the impeller comprises a top plate, a bottom plate, and blades, one of two adjacent blades can tilt as the impeller rotation speed increases, a connecting shaft is connected to the bottom plate, a magnetic block 1 is connected to the connecting shaft, and a driving motor is also included, the driving motor is drivingly connected to a magnetic block 2, and the magnetic block 1 is correspondingly located on the inner side of the magnetic block 2.

[0006] Furthermore, a fixed cover is connected to the side of the fixed shell away from the shell body, a cover shell is arranged in the space formed by the fixed shell and the fixed cover, magnetic block 1 is located in the cover shell, a drive motor is connected to a transmission shaft, a magnetic frame is connected to the transmission shaft, magnetic block 2 is arranged in the magnetic frame, and magnetic block 2 is located outside the cover shell.

[0007] Furthermore, the impeller includes a connecting shaft, the outer circumference of the connecting shaft is connected to a top plate and a bottom plate, the blades are located between the top plate and the bottom plate, the upper end of the connecting shaft is arranged through the top plate, an installation cavity is opened in the upper end of the connecting shaft, a partition frame is arranged in the installation cavity, a notch is opened at the outer circumference of the connecting shaft at the upper part of the partition frame, the notch is located between the two blades, one end of the bottom plate close to the connecting shaft is connected to a rotating shaft, the rotating shaft extends into the installation cavity, a transmission gear and a limit gear are connected to the rotating shaft, a driving screw is vertically arranged in the installation cavity, a driven gear is connected to the driving screw, a rotating motor 2 is arranged in the installation cavity, the rotating motor 2 is driven and connected to a driving gear, the driving gear is meshed with the driven gear, the driving screw includes screw 1 and screw 2, screw 1 A screw slider 1 and a screw slider 2 are respectively provided on the screw slider 1 and the screw rod 2, the outer periphery of the screw slider 1 is connected with a lifting plate 1, a rotating platform is provided above the lifting plate 1, a supporting platform is provided on the upper part of the lifting plate 1, the rotating platform is rotatably set on the supporting platform, a gear ring is provided under the rotating platform, a rotating motor 1 is provided on the upper part of the lifting plate 1, the rotating motor 1 is driven and connected with a driving gear, the driving gear is meshed with the gear ring, a plurality of racks are provided on the upper part of the rotating platform, the racks are located under one of the two adjacent transmission gears, and the racks can be meshed with the transmission gear, the outer periphery of the screw slider 2 is connected with the lifting plate 2, a plurality of fixed teeth and movable teeth are provided under the lifting plate 2, the fixed teeth and the movable teeth are alternately arranged, and the fixed teeth and the movable teeth can be meshed with the limit gear.

[0008] Furthermore, a support plate is connected to screw rod 1, an arc groove 1 is provided on the upper part of the support plate, a protrusion 1 is connected to the lower end of the lifting plate, the upper end of screw rod 2 is connected to the rotating plate, a fixed block is connected to the lower part of the partition frame, the rotating plate is rotatably arranged at the lower part of the fixed block, an arc groove 2 is provided on the lower part of the rotating plate, and a protrusion 2 is connected to the upper part of the lifting plate 2.

[0009] Furthermore, a sliding groove is provided at the lower part of the lifting plate 2, a guide column is provided in the sliding groove, a movable block is slidably provided on the guide column, the movable teeth are installed at the lower part of the movable block, and the parts of the guide column located at both ends of the movable block are both sleeved with springs 1.

[0010] Furthermore, a rotating seat is provided on the upper part of the second lifting plate, which is located above the sliding groove. A rotating block is rotatably provided on the rotating seat. The outer end of the rotating block exceeds the setting of the second lifting plate. The lower part of the inner end of the rotating block is connected to a limiting column. A through hole connected to the sliding groove is opened on the second lifting plate. The limiting column is arranged corresponding to the position of the through hole. A spring 2 is connected between the rotating block and the second lifting plate.

[0011] Furthermore, an installation table is arranged in the installation cavity, a slide rail is arranged under the installation table, a moving block is slidingly arranged in the slide rail, two ends of the slide rail are respectively connected to a limit plate 1 and a limit plate 2, the limit plate 2 is closer to the center of the installation table than the limit plate 1, a spring 3 is connected between the moving block and the limit plate 2, a trigger mechanism 1 is arranged at the lower part of the installation table, the trigger mechanism 1 is arranged close to the limit plate 1, a trigger mechanism 2 is arranged on the side of the limit plate 1 close to the moving block, and a trigger mechanism 3 is arranged on the side of the limit plate 2 close to the moving block, and the trigger mechanism 1, the trigger mechanism 2 and the trigger mechanism 3 are electrically connected to the rotating motor 1 and the rotating motor 2.

[0012] Furthermore, trigger mechanism one, trigger mechanism two, and trigger mechanism three have the same structure and all include an installation groove, a trigger block is slidably arranged in the installation groove, a trigger is arranged at the bottom of the installation groove, and a spring four is connected between the bottom of the installation groove and the trigger block.

[0013] The beneficial effects of the present invention are as follows: as the impeller speed increases, the angle of the blades changes accordingly, thereby avoiding vertical collision between particles and the blades, reducing blade wear and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a high-speed magnetically driven centrifugal pump according to this embodiment;

[0015] Figure 2 Schematic diagram of a structure of the impeller in this embodiment;

[0016] Figure 3 This is a schematic diagram of the installation of the blades in this embodiment;

[0017] Figure 4 This is a partial structural schematic diagram of the connecting shaft in this embodiment;

[0018] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0019] Figure 6 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0020] Figure 7 This is a partial structural diagram of the second lifting plate in this embodiment;

[0021] Figure 8 is a top view of the support plate in this embodiment;

[0022] Fig. 9 Schematic diagram of the structure of the trigger mechanism in this embodiment.

[0023] 1. Top plate; 2. Bottom plate; 3. Blade; 4. Connecting shaft; 5. Mounting cavity; 6. Partition frame; 7. Drainage port; 8. Rotating shaft; 9. Driving screw; 10. Screw 1; 11. Screw 2; 12. Support seat; 13. Groove 1; 14. Groove 2; 15. Transmission gear; 16. Limiting gear; 17. Screw slider 1; 18. Lifting plate 1; 19. Rotating table; 20. Support table; 21. Rack; 22. Gear ring; 23. Rotating motor 1; 24. Driving gear; 25. Bump 1; 26. Support plate; 27. Arc groove 1; 28. Driven gear; 29. ​​Rotating motor 2; 30. Driving gear; 31. Mounting table; 32. Screw slider 2; 33. Lifting plate 2; 34. Fixed gear; 35. Rotating plate; 36. 6. Arc groove 2; 37. Fixed block; 38. Projection block 2; 39. Sliding groove; 40. Guide column; 41. Movable block; 42. Movable tooth; 43. Spring 1; 44. Rotating seat; 45. Rotating block; 46. Limit column; 47. Spring 2; 48. Slide rail; 49. Limit plate 1; 50. Limit plate 2; 51. Moving block; 52. Spring 3; 53. Trigger mechanism 1; 54. Trigger mechanism 2; 55. Trigger mechanism 3; 56. Mounting groove; 57. Trigger block; 58. Trigger; 59. Spring 4; 60. Impeller; 61. Shell; 62. Inlet; 63. Outlet; 64. Fixed shell; 65. Cover shell; 66. Magnetic block 1; 67. Drive motor; 68. Transmission shaft; 69. Magnetic frame; 70. Magnetic block 2; 71. Fixed cover. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figure 1-Figure 9 As shown, a high-speed magnetically driven centrifugal pump includes a shell 61 and a fixed shell 64. An impeller 60 is installed in the space formed by the shell 61 and the fixed shell 64. The impeller 60 is rotatably arranged in the shell 61 and the fixed shell 64. An inlet 62 is provided at one end of the shell 61 away from the fixed shell 64, and an outlet 63 is provided on the side of the shell 61. The impeller 60 includes a top plate 1, a bottom plate 2, and blades 3. Among two adjacent blades 3, one blade 3 can be tilted as the speed of the impeller 60 increases. A connecting shaft 4 is connected to the bottom plate 2, and a magnetic block 1 66 is connected to the connecting shaft 4. It also includes a driving motor 67. The driving motor 67 is driven by a magnetic block 2 70, and the magnetic block 1 66 is correspondingly located on the inner side of the magnetic block 2 70.

[0026] Furthermore, a fixed cover 71 is connected to the side of the fixed shell 64 away from the shell body 61, a cover shell 65 is arranged in the space formed by the fixed shell 64 and the fixed cover 71, magnetic block 1 66 is located in the cover shell 65, a driving motor 67 is connected to a transmission shaft 68, a magnetic frame 69 is connected to the transmission shaft 68, magnetic block 2 70 is arranged in the magnetic frame 69, and magnetic block 2 70 is located outside the cover shell 65.

[0027] Furthermore, the impeller 60 includes a connecting shaft 4, the outer periphery of which is connected to a top plate 1 and a bottom plate 2, the blades 3 are located between the top plate 1 and the bottom plate 2, the number of blades 3 is set to six, and the six partition frames 6 are evenly distributed. The upper end of the connecting shaft 4 passes through the top plate 1 and is connected to a drainage port 7, and the inner diameter of the drainage port 7 gradually decreases as it approaches the connecting shaft 4. A mounting cavity 5 is provided in the upper end of the connecting shaft 4, a partition frame 6 is provided in the mounting cavity 5, a notch is provided at the position of the upper part of the partition frame 6 on the outer periphery of the connecting shaft 4, and the notch is located between the two blades 3, a rotating shaft 8 is connected to the end of the bottom plate 2 close to the connecting shaft 4, the rotating shaft 8 extends into the mounting cavity 5, a transmission gear 15 and a limit gear 16 are connected to the rotating shaft 8, a driving screw 9 is vertically provided in the mounting cavity 5, a driven gear 28 is connected to the driving screw 9, a rotating motor 29 is provided in the mounting cavity 5, the rotating motor 29 is driven and connected to a driving gear 30, the driving gear 30 is meshed with the driven gear 28, the driving screw 9 includes a screw 10 and a screw 2 11, a screw slider 17 and a screw slider 2 32 are respectively provided on the screw 10 and the screw 2 11, a lifting plate 18 is connected to the outer periphery of the screw slider 17, and a lifting plate 18 is provided above the lifting plate 18 The rotating platform 19 is provided with a driving screw 9 passing through the rotating platform 19. The upper part of the lifting plate 18 is provided with a supporting platform 20. The rotating platform 19 is rotatably provided on the supporting platform 20. A gear ring 22 is provided below the rotating platform 19. A rotating motor 1 23 is provided on the upper part of the lifting plate 18. The rotating motor 1 23 is connected to a driving gear 24. The driving gear 24 is meshed with the gear ring 22. A plurality of racks 21 are provided on the upper part of the rotating platform 19. The racks 21 are located below one of the two adjacent transmission gears 15. The racks 21 can mesh with the transmission gear 15. The outer periphery of the screw slider 2 32 is connected with the lifting plate 2 33. A plurality of fixed teeth 34 and movable teeth 42 are provided below the lifting plate 2 33. The fixed teeth 34 and the movable teeth 42 are alternately provided. The fixed teeth 34 and the movable teeth 42 can mesh with the limit gear 16. The movable teeth 42 and the fixed teeth 34 act on the adjacent blades 3. In the initial state, all blades 3 remain in a vertical state, perpendicular to the top plate 1 and the bottom plate 2. When the impeller 60 rotates at a low speed, the collision force between the particles and the blades 3 is small, and the wear on the blades 3 is small. As the speed of the blades 3 increases, the movable teeth 42 move outward and disengage from the limit of the limit gear 16. At the same time, the rotating motor 23 drives the rotating table 19 to rotate to drive the rack 21 to move. The rack 21 acts on the transmission gear 15 to drive the blades 3 to rotate, so that the blades 3 are tilted. The adjacent blades 3 remain in a vertical state to maintain the transportation force. The tilted blades 3 reduce the collision force in the vertical direction with the particles, which can reduce the wear of the particles on the blades 3. After each operation of the impeller 60 stops, the position of the mechanism in the mounting cavity 5 changes and acts on the adjacent blades 3. When the impeller 60 runs next time, the adjacent blades 3 are tilted. The adjacent blades 3 are tilted alternately, which can evenly wear and extend the overall service life.

[0028] Furthermore, the screw rod 10 is connected to a support plate 26, an arc groove 27 is provided on the upper part of the support plate 26, a protrusion 25 is connected to the lower end of the lifting plate 18, the upper end of the driving screw rod 9 is rotatably arranged in the support seat 12, the support seat 12 includes a fixed block 37 and a rotating plate 35, the upper end of the screw rod 2 11 is connected to the rotating plate 35, the lower part of the partition frame 6 is connected to the fixed block 37, the rotating plate 35 is rotatably arranged at the lower part of the fixed block 37, the lower part of the rotating plate 35 is provided with an arc groove 2 36, and the upper part of the lifting plate 2 33 is connected to a protrusion 2 38. The protrusion 25 has a certain amount of room for movement in the arc groove 27. After the protrusion 25 enters the arc groove 27, the lifting plate 18 cannot be lowered. When the support plate 26 rotates, the side of the arc groove 27 presses against the protrusion 25, thereby driving the lifting plate 18 to rotate synchronously with the driving screw rod 9. When the screw rod 9 is driven to reverse, since the other side of the arc groove 27 is at a certain distance from the protrusion 25, before the side contacts the protrusion 25, the lifting plate 18 can rise so that the protrusion 25 is separated from the arc groove 27, and the lifting plate 18 will not be driven to rotate. The cooperation principle between the lifting plate 23 and the rotating plate 35 is the same.

[0029] Furthermore, a sliding groove 39 is provided at the lower part of the lifting plate 2 33, and a guide column 40 is provided in the sliding groove 39. A movable block 41 is slidably provided on the guide column 40, and a movable tooth 42 is installed at the lower part of the movable block 41. The parts of the guide column 40 located at both ends of the movable block 41 are sleeved with springs 1 43. When the speed of the impeller 60 increases, the movable block 41 moves away from the center of the lifting plate 2 33, driving the movable tooth 42 to move outward and disengage from the engagement with the limit gear 16, releasing the limit on the limit gear 16, so that the rack 21 can drive the transmission gear 15 coaxial with the limit gear 16 to rotate to drive the blade 3 to rotate. The speed of the impeller 60 required for the movable block 41 to move is lower than that of the movable block 51, so that after the movable tooth 42 releases the limit on the limit gear 16, the rack 21 drives the coaxial transmission gear 15 again.

[0030] Furthermore, a rotating seat 44 is provided at the upper part of the lifting plate 33 above the sliding groove 39, and a rotating block 45 is rotatably provided on the rotating seat 44. The outer end of the rotating block 45 is arranged beyond the lifting plate 33, and the lower part of the inner end of the rotating block 45 is connected to a limiting column 46. A through hole connected to the sliding groove 39 is provided on the lifting plate 33, and the limiting column 46 is arranged corresponding to the position of the through hole. A spring 47 is connected between the rotating block 45 and the lifting plate 33. In order to prevent the movable tooth 42 from being separated from the limiting gear 16 and then contacting the limiting gear 16 to affect the rotation of the limiting gear 16. When the movable block 41 drives the movable tooth 42 to be separated from the limiting gear 16, when the inner end of the movable block 41 slides over the limiting column 46, the rotating block 45 rotates toward the movable block 41 under the action of the spring 47, so that the limiting column 46 is stuck on the inner side of the movable block 41, which can prevent the movable block 41 from moving back.

[0031] When the lifting plate 2 33 rises, the part of the rotating block 45 that exceeds the lifting plate 2 33 contacts the lower side of the partition frame 6, and the lower side of the partition frame 6 abuts against the rotating block 45, so that the rotating block 45 rotates to drive the limiting column 46 to rise and separate from the movable block 41, and the movable block 41 returns to its original position under the action of the springs 1 43 on both sides. When the lifting plate 2 33 descends again, the rotating block 45 rotates toward the movable block 41 under the action of the springs 2 47, so that the limiting column 46 abuts against the upper end surface of the movable block 41.

[0032] Furthermore, a mounting platform 31 is provided in the mounting cavity 5, a slide rail 48 is provided below the mounting platform 31, a moving block 51 is slidably provided in the slide rail 48, two ends of the slide rail 48 are respectively connected to a limit plate 1 49 and a limit plate 2 50, the limit plate 2 50 is closer to the center of the mounting platform 31 than the limit plate 1 49, a spring 3 52 is connected between the moving block 51 and the limit plate 2 50, a trigger mechanism 1 53 is provided at the lower part of the mounting platform 31, the trigger mechanism 1 53 is provided close to the limit plate 1 49, a trigger mechanism 2 54 is provided on the side of the limit plate 1 49 close to the moving block 51, and a trigger mechanism 3 55 is provided on the side of the limit plate 2 50 close to the moving block 51, and the trigger mechanism 1 53, the trigger mechanism 2 54 and the trigger mechanism 3 55 are electrically connected to the rotating motor 1 23 and the rotating motor 2 29. The trigger mechanism 1 53 , the trigger mechanism 2 54 , and the trigger mechanism 3 55 cooperate with each other to control the operation of the rotating motor 1 23 and the rotating motor 2 29 .

[0033] Specifically, as the speed of the impeller 60 gradually increases, the moving block 51 moves in a direction away from the center of the mounting platform 31, and the moving block 51 contacts the trigger mechanism 1 53, and at this time, the rotating motor 1 23 is controlled to start. The rotating motor 1 23 drives the driving gear 24 to rotate, and the driving gear 24 drives the gear ring 22 to drive the rotating platform 19 to rotate. The rack 21 on the rotating platform 19 then drives the rotating shaft 8 to rotate by cooperating with the transmission gear 15, so that the blade 3 rotates a certain angle and tilts. The tilted blade 3 can prevent the particles in the medium from colliding with the blade 3 in a vertical direction, thereby reducing the wear of the blade 3. The speed of the impeller 60 continues to increase, and the moving block 51 can contact the trigger mechanism 2 54, thereby controlling the rotating motor 1 23 to stop, so that the inclination of the blade 3 is fixed to a certain angle. By changing the installation position of the limit plate 1 49, the time required for the moving block 51 to contact the trigger mechanism 2 54 can be adjusted, which also plays a role in adjusting the operation time of the rotating motor 1 23, and indirectly plays a role in adjusting the maximum inclination angle of the blade 3. After the speed of the impeller 60 decreases, the moving block 51 moves toward the center of the mounting platform 31. The moving block 51 first disengages from the trigger mechanism 2 54. At this time, the rotating motor 1 23 controls the driving gear 24 to reverse, thereby driving the blade 3 to rotate in the opposite direction through the rotating shaft 8. The moving block 51 disengages from the trigger mechanism 1 53 again, causing the rotating motor 1 23 to stop. At this time, the blade 3 returns to a vertical state. The moving block 51 finally contacts the trigger mechanism 3 55, controls the rotating motor 2 29 to drive the driving gear 30 to rotate, and the driving gear 30 drives the driving screw 9 to rotate through the driven gear 28, so that the lifting plate 1 18 descends, the protrusion 1 25 enters the arc groove 1 27, the lifting plate 2 33 rises, and the protrusion 2 38 enters the arc groove 2 36. At this time, when the driving screw 9 rotates again, it can drive the lifting plate 1 18 to rotate synchronously through the support plate 26, and drive the lifting plate 2 33 to rotate synchronously through the rotating plate 35, so as to adjust the positions of the rack 21, the fixed teeth 34, and the movable teeth 42 so that they reach the positions of the corresponding parts of an adjacent blade 3. Then the driving screw 9 is controlled to reverse, so that the lifting plate 1 18 rises and the lifting plate 2 33 falls, and the rack 21, the fixed teeth 34, and the movable teeth 42 return to the original height and act on the parts of another blade 3 adjacent to the previous blade 3. After completing this action, the rotating motor 2 29 stops. The above steps are repeated each time the impeller 60 is started and stopped.

[0034] Furthermore, the trigger mechanism 1 53, the trigger mechanism 2 54, and the trigger mechanism 3 55 have the same structure, and all include a mounting groove 56, in which a trigger block 57 is slidably arranged, a trigger 58 is arranged at the bottom of the mounting groove 56, and a spring 4 59 is connected between the bottom of the mounting groove 56 and the trigger block 57. The outer end of the trigger block 57 is hemispherical, which is convenient for squeezing the trigger block 57 to avoid being blocked by the trigger block 57. The trigger block 57 is squeezed into the mounting groove 56, and the bottom of the trigger block 57 contacts the trigger 58, so that the trigger 58 sends a contact signal. Under the action of the spring 4 59, the trigger block 57 can be separated from the contact with the trigger 58 when it is not squeezed, and at this time the trigger 58 can send a separation signal.

[0035] Furthermore, a groove 13 and a groove 2 14 are respectively provided on one side of the top plate 1 close to the blade 3 and on one side of the bottom plate 2 close to the blade 3. The upper end and the lower end of the blade 3 are respectively located in the groove 13 and the groove 2 14. The cross section of the blade 3 is elliptical. This structure enables the blade 3 to rotate at a certain angle while maintaining a relatively closed space between the top plate 1 and the bottom plate 2, thereby reducing the amount of conveying medium passing through the gap between the blade 3 and the top plate 1 and the bottom plate 2, and maintaining a high conveying force. The elliptical cross section of the blade 3 can also reduce the vertical force between the particles.

[0036] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A high-speed magnetic drive centrifugal pump, characterized in that: The invention comprises a shell (61) and a fixed shell (64), wherein an impeller (60) is installed in a space formed by the shell (61) and the fixed shell (64), wherein the impeller (60) is rotatably arranged in the shell (61) and the fixed shell (64), wherein an inlet (62) is provided at one end of the shell (61) away from the fixed shell (64), wherein an outlet (63) is provided at a side of the shell (61), wherein the impeller (60) comprises a top plate (1), a bottom plate (2), and blades (3), wherein one of two adjacent blades (3) can be tilted as the rotation speed of the impeller (60) increases, wherein a connecting shaft (4) is connected to the bottom plate (2), wherein a magnetic block 1 (66) is connected to the connecting shaft (4); and the invention also comprises a driving motor (67), wherein the driving motor (67) is driven by a magnetic block 2 (70), wherein the magnetic block 1 (66) is correspondingly located on the inner side of the magnetic block 2 (70).

2. A high-speed magnetic drive centrifugal pump according to claim 1, characterized in that: A fixed cover (71) is connected to the side of the fixed shell (64) away from the shell body (61); a cover shell (65) is arranged in the space formed by the fixed shell (64) and the fixed cover (71); the magnetic block 1 (66) is located in the cover shell (65); the driving motor (67) is connected to a transmission shaft (68); a magnetic frame (69) is connected to the transmission shaft (68); the magnetic block 2 (70) is arranged in the magnetic frame (69); and the magnetic block 2 (70) is located outside the cover shell (65).

3. A high-speed magnetic drive centrifugal pump according to claim 1 or 2, characterized in that: The impeller (60) comprises a connecting shaft (4), the outer periphery of which is connected to a top plate (1) and a bottom plate (2), the blades (3) are located between the top plate (1) and the bottom plate (2), the upper end of the connecting shaft (4) is arranged to pass through the top plate (1), a mounting cavity (5) is provided in the upper end of the connecting shaft (4), a partition frame (6) is provided in the mounting cavity (5), a notch is provided in the outer periphery of the connecting shaft (4) at a position above the partition frame (6), the notch is located between the two blades (3), the end of the bottom plate (2) close to the connecting shaft (4) is connected to a rotating shaft (8), the rotating shaft (8) A driving shaft (8) is extended into the installation cavity (5) and arranged. The rotating shaft (8) is connected to a transmission gear (15) and a limit gear (16). A driving screw (9) is vertically arranged in the installation cavity (5). The driving screw (9) is connected to a driven gear (28). A rotating motor (29) is arranged in the installation cavity (5). The rotating motor (29) is driven and connected to a driving gear (30). The driving gear (30) is meshed with the driven gear (28). The driving screw (9) includes a screw rod (10) and a screw rod (11). The screw rod (10) and the screw rod (21) are connected to each other. A screw slider (17) and a screw slider (32) are respectively arranged on the upper and lower parts of the lifting plate (11), the outer periphery of the screw slider (17) is connected to a lifting plate (18), a rotating platform (19) is arranged above the lifting plate (18), a supporting platform (20) is arranged on the upper part of the lifting plate (18), the rotating platform (19) is rotatably arranged on the supporting platform (20), a gear ring (22) is arranged below the rotating platform (19), a rotating motor (23) is arranged on the upper part of the lifting plate (18), the rotating motor (23) is driven and connected to a driving gear (24), and the driving gear ( 24) meshes with the gear ring (22), a plurality of racks (21) are arranged on the upper part of the rotating platform (19), the racks (21) are located below one of the two adjacent transmission gears (15), and the racks (21) can mesh with the transmission gear (15), the outer periphery of the second screw slider (32) is connected with the second lifting plate (33), and a plurality of fixed teeth (34) and movable teeth (42) are arranged below the second lifting plate (33), the fixed teeth (34) and movable teeth (42) are arranged alternately, and the fixed teeth (34) and movable teeth (42) can mesh with the limit gear (16).

4. A high-speed magnetically driven centrifugal pump according to claim 3, characterized in that: The screw rod 1 (10) is connected to a support plate (26), an arc-shaped groove 1 (27) is provided on the upper part of the support plate (26), a protrusion 1 (25) is connected to the lower end of the lifting plate 1 (18), the upper end of the screw rod 2 (11) is connected to a rotating plate (35), a fixed block (37) is connected to the lower part of the partition frame (6), the rotating plate (35) is rotatably arranged at the lower part of the fixed block (37), an arc-shaped groove 2 (36) is provided on the lower part of the rotating plate (35), and a protrusion 2 (38) is connected to the upper part of the lifting plate 2 (33).

5. A high-speed magnetic drive centrifugal pump according to claim 3, characterized in that: A sliding groove (39) is provided at the lower part of the lifting plate (33), a guide column (40) is provided in the sliding groove (39), a movable block (41) is slidably provided on the guide column (40), the movable tooth (42) is installed at the lower part of the movable block (41), and the parts of the guide column (40) located at both ends of the movable block (41) are sleeved with springs (43).

6. A high-speed magnetic drive centrifugal pump according to claim 5, characterized in that: A rotating seat (44) is arranged at a position above the sliding groove (39) on the upper part of the lifting plate (33), and a rotating block (45) is rotatably arranged on the rotating seat (44). The outer end of the rotating block (45) is arranged beyond the lifting plate (33), and the lower part of the inner end of the rotating block (45) is connected to a limiting column (46). A through hole connected to the sliding groove (39) is opened on the lifting plate (33), and the limiting column (46) is arranged corresponding to the position of the through hole. A spring (47) is connected between the rotating block (45) and the lifting plate (33).

7. A high-speed magnetic drive centrifugal pump according to claim 4, characterized in that: A mounting platform (31) is arranged in the mounting cavity (5), a slide rail (48) is arranged below the mounting platform (31), a moving block (51) is slidably arranged in the slide rail (48), two ends of the slide rail (48) are respectively connected to a limiting plate 1 (49) and a limiting plate 2 (50), the limiting plate 2 (50) is closer to the center of the mounting platform (31) than the limiting plate 1 (49), a spring 3 (52) is connected between the moving block (51) and the limiting plate 2 (50), and the mounting platform A trigger mechanism 1 (53) is arranged at the lower part of (31), and the trigger mechanism 1 (53) is arranged near the limit plate 1 (49), and a trigger mechanism 2 (54) is arranged on the side of the limit plate 1 (49) near the moving block (51), and a trigger mechanism 3 (55) is arranged on the side of the limit plate 2 (50) near the moving block (51), and the trigger mechanism 1 (53), the trigger mechanism 2 (54), and the trigger mechanism 3 (55) are electrically connected to the rotating motor 1 (23) and the rotating motor 2 (29).

8. A high-speed magnetic drive centrifugal pump according to claim 7, characterized in that: The trigger mechanism 1 (53), the trigger mechanism 2 (54) and the trigger mechanism 3 (55) have the same structure and all include a mounting groove (56), a trigger block (57) is slidably arranged in the mounting groove (56), a trigger (58) is arranged at the bottom of the mounting groove (56), and a spring 4 (59) is connected between the bottom of the mounting groove (56) and the trigger block (57).

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