CN209943121U

CN209943121U - Magnetic force driving pump

Info

Publication number: CN209943121U
Application number: CN201920401215.2U
Authority: CN
Inventors: 苏连斌; 张速科
Original assignee: Zhejiang Hanzhou Pump Technology Co Ltd
Current assignee: Zhejiang Hanzhou Pump Technology Co Ltd
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-01-14
Anticipated expiration: 2029-03-27

Abstract

The utility model discloses a magnetic drive pump, which comprises a motor and a pump shell, wherein one end of the motor is connected with a connecting seat through a flange, a fastening bolt is fixedly arranged on the side surface of a port flange at one end of the connecting seat, an outer magnetic fixed end is fixedly connected with the output end of the motor, an outer magnetic steel is fixedly connected with one end of the outer magnetic fixed end, an isolating sleeve is rotatably connected in a semi-closed inner cavity of the outer magnetic steel, the middle position of the bottom of the semi-closed inner cavity of the isolating sleeve is connected with a pump shaft through a coupler, the pump shaft is rotatably connected with a rolling bearing, the rolling bearing is penetrated and installed at the bottom of one end of the inner magnetic steel, the other end of the inner magnetic steel is fixedly provided with an impeller, a static ring is fixedly installed in the semi-closed inner cavity at the middle position of one end of the pump shell, the friction force is reduced, and the service life of the bearing is prolonged.

Description

Magnetic force driving pump

Technical Field

The utility model relates to a driving pump technical field specifically is a magnetic force driving pump.

Background

The magnetic force driving pump is a new type non-sealing pump which can implement non-contact transmission of torque by using permanent-magnet transmission technical principle. The magnetic pump is mainly used in the occasions requiring the pump to leak only slightly or even not and the occasions of high vacuum which are difficult to be qualified by mechanical sealing. In recent years, the pump is widely applied in petroleum, chemical industry, electroplating, pharmacy, food, paper selection, printing and dyeing and other industries abroad.

In the prior art, sliding bearings are mostly arranged between a pump shaft and a bearing or a pump shell, and a magnetic pump usually directly uses a conveying medium as a cooling medium and a lubricant. When the working medium in a magnetic pump is evacuated, severe frictional heating occurs. After the medium is pumped out, the inner magnetic assembly which continuously idles drives the pump shaft to continuously generate sliding friction with the bearing seat, the rotation and the friction of the sliding bearing generate a large amount of heat which can not be taken away in time due to the lack of cooling of flowing working medium, and due to the reasons of manufacturing materials of the pump shaft and the like, the overheating fracture of the pump shaft or the overhigh temperature of the inner magnetic assembly can cause demagnetization or melting of a plastic part.

Disclosure of Invention

An object of the utility model is to provide a magnetic force actuation pump to the slide bearing that proposes in solving above-mentioned background art produces a large amount of heats and axle sleeve when idling and has blockked up the inside problem that cools off and lubricate the pump shaft that gets into the isolation sleeve of working medium.

In order to achieve the above object, the utility model provides a following technical scheme:

a magnetic drive pump comprises a motor and a pump shell, wherein one end of the motor is connected with a coupling seat through a flange, a fastening bolt is fixedly mounted on the side surface of a flange at one end of the coupling seat, an outer magnetic fixed end is fixedly connected with the output end of the motor, an outer magnetic steel is fixedly connected with one end of the outer magnetic fixed end, an isolation sleeve is rotatably connected in a semi-closed inner cavity of the outer magnetic steel, a pump shaft is connected to the middle position of the bottom of the semi-closed inner cavity of the isolation sleeve through a coupler, a lubricating groove is formed in the side surface of the pump shaft, the pump shaft is rotatably connected with a rolling bearing, the rolling bearing penetrates through the bottom of one end of the inner magnetic steel, an impeller is fixedly mounted at the other end of the inner magnetic steel, a static ring is fixedly mounted in the semi-closed inner cavity at the middle position, The water inlet is fixedly arranged at the middle position of the other end of the pump shell axially penetrates through the side wall of the pump shell, and the water outlet is fixedly arranged at the side surface tangential direction of the pump shell.

As a further aspect of the present invention: the rolling bearing is a component made of pressureless sintered silicon carbide.

As a further aspect of the present invention: the inner magnetic steel and the impeller are integrated structural components.

As a further aspect of the present invention: fastening bolts are uniformly distributed on the side surface of the pump shell and the flange at one end of the connecting seat, and the pump shell is fixedly arranged at the flange of the connecting seat through the fastening bolts.

As a further aspect of the present invention: the outer magnetic fixing end, the outer magnetic steel, the isolation sleeve, the pump shaft, the sealing ring, the inner magnetic steel and the impeller are all arranged in the semi-closed inner cavity of the connecting seat.

As a further aspect of the present invention: the bottom fixed mounting of motor has the shock attenuation frame, the quantity of shock attenuation frame is two.

As a further aspect of the present invention: the rolling bearing comprises a bearing outer ring fixedly installed inside the inner magnetic steel, the inner surface of the bearing outer ring is connected with a ball in a rolling mode, and a bearing inner ring is arranged on a tangent circle formed by the tangent line on the side surface of the ball.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses the antifriction bearing of installation changes sliding friction into rolling friction for frictional force reduces, and antifriction bearing adopts non-pressure sintering carborundum material simultaneously, and performances such as corrosion resistance, wearability all obtain improving, have prolonged the life of bearing.

2. The utility model discloses interior magnet steel is the component of a body structure with the impeller for the transport medium gets into the separation sleeve more easily and cools off and lubricate the pump shaft, avoids the too big and high temperature demagnetization of heat production.

3. The utility model discloses the shockproof frame of installation makes the holistic stability of device better, avoids vibrations to bring the influence to the normal work of device.

4. The utility model discloses an impeller is fixed on interior magnet steel, and interior magnet is rotatory directly to drive the impeller rotation, compares traditional interior magnet steel drive pump shaft and drives the rotatory transmission structure of impeller again, has reduced mechanical loss, has improved the work efficiency of magnetic drive pump.

Drawings

FIG. 1 is an exploded view of a magnetically driven pump;

FIG. 2 is a schematic view of the overall structure of a magnetically driven pump;

fig. 3 is a schematic structural diagram of a rolling bearing in a magnetic drive pump.

In the figure: 1. a motor; 2. a coupling seat; 3. external magnetic steel; 4. an isolation sleeve; 5. a pump shaft; 6. an impeller; 7. a moving ring; 8. a stationary ring; 9. a water inlet; 10. a pump housing; 11. a water outlet; 12. internal magnetic steel; 13. a seal ring; 14. a rolling bearing; 15. a lubrication groove; 16. an outer magnetic fixing end; 17. fastening a bolt; 18. a ball bearing; 19. a bearing outer race; 20. a bearing inner race; 21. shock attenuation frame.

Detailed Description

Referring to fig. 1 to 3, in an embodiment of the present invention, a magnetic force driven pump includes a motor 1 and a pump housing 10, one end of the motor 1 is connected to a coupling seat 2 through a flange, a fastening bolt 17 is fixedly installed on a flange side surface of a port at one end of the coupling seat 2, an output end of the motor 1 is fixedly connected to an external magnetic fixed end 16, one end of the external magnetic fixed end 16 is fixedly connected to an external magnetic steel 3, a spacer sleeve 4 is rotatably connected to a semi-closed inner cavity of the external magnetic steel 3, a pump shaft 5 is connected to a middle position of a bottom of the semi-closed inner cavity of the spacer sleeve 4 through a coupling, a lubrication groove 15 is formed on a side surface of the pump shaft 5, the pump shaft 5 is rotatably connected to a rolling bearing 14, the rolling bearing 14 penetrates through a bottom of an end where an internal magnetic steel 12 is installed, an, the inside of stationary ring 8 rotates and is connected with rotating ring 7, the through-hole of antifriction bearing 14,

interior magnet steel

12 and 6 three intermediate positions of impeller is run through to the one end of pump shaft 5 to fixed mounting is in rotating ring 7 internal surface, be provided with sealing washer 13 between the flange position of the one end border position of pump case 10 and spacer 4, the other end intermediate position axial of pump case 10 runs through pump case 10 lateral wall fixed mounting has water inlet 9, the side surface tangential direction of pump case 10 runs through pump case 10 lateral wall fixed mounting has delivery port 11.

In order to prolong the service life of the rolling bearing 14, in the present embodiment, the rolling bearing 14 is preferably a pressureless sintered silicon carbide member.

In order to make it easier for the transport medium to enter the spacer sleeve 4 for cooling and lubricating the pump shaft 5, in the present exemplary embodiment, the inner magnet steel 12 is preferably a component of one-piece construction with the impeller 6.

In order to make the whole structure more stable, in the present embodiment, it is preferable that fastening bolts 17 are uniformly distributed on the side surface of the pump casing 10 and the flange position of one end of the coupling seat 2, and the pump casing 10 is fixedly mounted on the flange position of the coupling seat 2 through the fastening bolts 17.

In order to ensure the sealing performance of the device, in the present embodiment, it is preferable that the outer magnetic fixing end 16, the outer magnetic steel 3, the spacer sleeve 4, the pump shaft 5, the seal ring 13, the inner magnetic steel 12 and the impeller 6 are all installed in the semi-closed inner cavity of the coupling seat 2.

In order to make the operation of the device more stable, in the present embodiment, it is preferable that the bottom of the motor 1 is fixedly mounted with two shock-absorbing brackets 21.

In order to change the sliding friction into the rolling friction, in the present embodiment, it is preferable that the rolling bearing 14 includes an outer bearing ring 19 fixedly installed inside the inner magnetic steel 12, the inner surface of the outer bearing ring 19 is connected with the balls 18 in a rolling manner, and the inner bearing ring 20 is disposed on a tangent circle formed by a tangent line on a side surface of the balls 18.

The utility model discloses a theory of operation is: when the magnetic force driving pump works, the motor 1 is electrified to run, the output end of the motor 1 is driven by the motor to rotate so as to drive the outer magnetic fixing end 16 to rotate, the outer magnetic steel 3 fixedly arranged on the outer magnetic fixing end 16 also rotates along with the outer magnetic steel, the outer magnetic steel 3 rotates to cause the magnetic field change between the inner magnetic steel and the outer magnetic steel, the magnetic force line of the magnetic field passes through the spacer sleeve 4 to act on the inner magnetic steel 12, so that the inner magnetic steel 12 rotates, the inner magnetic steel 12 further drives the impeller 6 to rotate, when a conveying medium arrives at the impeller 6 from the water inlet 9, the impeller 6 rotates at high speed to generate centrifugal force on the conveying liquid, the conveying medium flies out of the pump shell 10 from the water outlet 11 in the tangential direction, as the conveying medium can directly contact the pump shaft 5 and the rolling bearing 14, the pump shaft 5 can be taken away, the rolling bearing 14 of the, the utility model discloses the antifriction bearing 14 of installation changes sliding friction into rolling friction for frictional force reduces, and antifriction bearing 14 adopts non-pressure sintering carborundum material simultaneously, and performances such as corrosion resistance, wearability all obtain improving, have prolonged the life of bearing.

Claims

1. A magnetic drive pump comprises a motor (1) and a pump shell (10), and is characterized in that one end of the motor (1) is connected with a coupling seat (2) through a flange, a fastening bolt (17) is fixedly installed on the side surface of a flange at one end port of the coupling seat (2), an external magnetic fixed end (16) is fixedly connected with the output end of the motor (1), one end of the external magnetic fixed end (16) is fixedly connected with an external magnetic steel (3), an isolating sleeve (4) is rotatably connected in a semi-closed inner cavity of the external magnetic steel (3), the middle position of the bottom of the semi-closed inner cavity of the isolating sleeve (4) is connected with a pump shaft (5) through a coupler, a lubricating groove (15) is formed in the side surface of the pump shaft (5), an internal magnetic bearing (14) is rotatably connected with the pump shaft (5), and the rolling bearing (14) penetrates, the impeller (6) is fixedly installed at the other end of the inner magnetic steel (12), a static ring (8) is fixedly installed in a semi-closed inner cavity in the middle of one end of the pump shell (10), a movable ring (7) is rotatably connected to the inside of the static ring (8), one end of the pump shaft (5) penetrates through holes in the middle of the rolling bearing (14), the inner magnetic steel (12) and the impeller (6) and is fixedly installed on the inner surface of the movable ring (7), a sealing ring (13) is arranged between the edge position of one end of the pump shell (10) and the flange position of the isolation sleeve (4), a water inlet (9) is axially arranged in the middle of the other end of the pump shell (10) and penetrates through the side wall of the pump shell (10) in the axial direction of the tangent line of the side surface of the pump shell (10.

2. A magnetically driven pump according to claim 1, wherein the rolling bearing (14) is a pressureless sintered silicon carbide component.

3. A magnetically driven pump according to claim 1, wherein the inner magnetic steel (12) and the impeller (6) are a unitary structural component.

4. A magnetic force driven pump according to claim 1, characterized in that fastening bolts (17) are uniformly distributed on the side surface of the pump casing (10) and the flange position of one end of the coupling seat (2), and the pump casing (10) is fixedly arranged on the flange position of the coupling seat (2) through the fastening bolts (17).

5. A magnetic drive pump according to claim 1, characterized in that the outer magnetic fixing end (16), the outer magnetic steel (3), the spacer sleeve (4), the pump shaft (5), the sealing ring (13), the inner magnetic steel (12) and the impeller (6) are all mounted in a semi-closed inner cavity of the coupling seat (2).

6. A magnetic drive pump according to claim 1, characterized in that the bottom of the motor (1) is fixedly provided with two shock-absorbing brackets (21), and the number of the shock-absorbing brackets (21) is two.

7. A magnetically driven pump according to claim 1, wherein the rolling bearing (14) comprises an outer bearing ring (19) fixedly mounted inside the inner magnetic steel (12), the inner surface of the outer bearing ring (19) is connected with balls (18) in a rolling manner, and an inner bearing ring (20) is arranged on a tangent circle formed by a tangent line on the side surface of the balls (18).