CN212677058U

CN212677058U - Magnetic coupler with air cooling and heat dissipation functions

Info

Publication number: CN212677058U
Application number: CN202021202746.8U
Authority: CN
Inventors: 朱能伟; 方晓东; 梁勖; 游利兵
Original assignee: Zhongshan Puhong Optoelectronics Technology Co ltd
Current assignee: Zhongshan Puhong Optoelectronics Technology Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-03-09
Anticipated expiration: 2030-06-24

Abstract

The utility model discloses a take radiating magnetic coupling of forced air cooling belongs to magnetic drive technical field. The magnetic coupling device comprises a driving shaft, an outer magnetic steel seat, a transmission shaft, an inner magnetic seat and an isolation cover; the outer magnetic steel seat is sleeved on the driving shaft, and a plurality of outer magnetic blocks are uniformly arranged on the axial inner edge of the outer magnetic steel seat; the polarities of a plurality of external magnetic blocks are distributed alternately; the inner magnetic base is sleeved on the transmission shaft, and a plurality of inner magnetic blocks are uniformly arranged on the axial outer edge of the inner magnetic base; the polarities of the plurality of inner magnetic blocks are distributed alternately; the isolation cover is in clearance fit with the outer magnetic steel seat and the inner magnetic seat; the outer magnetic steel seat is provided with first heat dissipation channels which are uniformly distributed; the outer wall of the outer magnetic steel seat is provided with a wind-engaging lug structure, an L-shaped second heat dissipation channel is arranged in the wind-engaging lug structure, and one end of the first heat dissipation channel is communicated with one end of the second heat dissipation channel; the utility model discloses can effectively dispel the heat to external magnetism steel seat and heat exchanger, improve magnetic coupling's operational reliability.

Description

Magnetic coupler with air cooling and heat dissipation functions

Technical Field

The utility model relates to a magnetic drive technical field especially relates to a take radiating magnetic coupling of forced air cooling.

Background

The magnetic transmission technology is a transmission technology which realizes the non-contact transmission of force or torque by utilizing the coupling force generated by the driving and driven permanent magnetic fields in the transmission part under the action of external force. The main transmission device and the auxiliary transmission device are completely separated, a separation cover can be designed between the main transmission device and the auxiliary transmission device, and the main transmission device and the auxiliary transmission device can be arranged in two separated working states through the separation cover. Stainless steel is generally used as the cage material. When the magnetic force in the master-slave transmission device penetrates through the isolation cover, the isolation cover can generate heat under the action of the rotating magnetic field. The higher the rotation speed, the more the magnetic poles and the stronger the magnetic force, the more serious the heat generation of the isolation cover. In a heat-generating environment, the magnetic force of the permanent magnet blocks is reduced, so that the transmission is unstable and fails. Therefore, a heat dissipation structure is needed to reduce the temperature of the magnetic block and the isolation cover.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a take air-cooled radiating magnetic coupling ware is proposed, the utility model discloses can effectively dispel the heat to external magnetic steel seat and heat shield, improve magnetic coupling ware's operational reliability.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a magnetic coupler with air cooling and heat dissipation, which comprises a driving shaft, an outer magnetic steel seat, a transmission shaft, an inner magnetic seat and an isolation cover; the outer magnetic steel seat is sleeved on the driving shaft, and a plurality of outer magnetic blocks are uniformly arranged on the axial inner edge of the outer magnetic steel seat; the polarities of the plurality of outer magnetic blocks are distributed alternately; the inner magnetic base is sleeved on the transmission shaft, and a plurality of inner magnetic blocks are uniformly arranged on the axial outer edge of the inner magnetic base; the polarities of the plurality of inner magnetic blocks are distributed alternately; the inner magnetic seat is positioned on the inner side of the outer magnetic steel seat, and the isolation cover wraps the inner magnetic seat and part of the transmission shaft; the isolation cover is in clearance fit with the outer magnetic steel seat and the inner magnetic seat;

a plurality of first heat dissipation channels which are uniformly distributed are arranged on the axial inner edge of the outer magnetic steel seat; the first heat dissipation channel is correspondingly arranged between every two adjacent outer magnetic blocks and horizontally penetrates through the outer magnetic steel seat; the outer wall of outer magnetism steel seat is provided with the ear structure of waving wind, it has the second heat dissipation channel that is the L type in the ear structure of waving wind, the one end of first heat dissipation channel with the one end intercommunication of second heat dissipation channel, the other end of second heat dissipation channel is the air intake, the other end of first heat dissipation channel is the air outlet.

Furthermore, the direction of the air inlet is consistent with the axial direction and the tangential direction of the excircle of the outer magnetic steel seat.

Furthermore, the quantity of interior magnetic path, the quantity of outer magnetic path, the quantity of ear structure of waving is 6, 6 recesses have been seted up along the axial of interior magnetic base outward, 6 magnetic ring has been inlayed to the bottom of recess, 6 interior magnetic path fills respectively in 6 in the recess, interior magnetic path is located magnetic ring's the outside.

Further, the transmission shaft runs through interior magnetic base, the transmission shaft is close to one pot head of outer magnetic steel seat is equipped with the nut, interior magnetic base with be provided with outer wrapper between the cage, outer wrapper parcel interior magnetic path and magnetic conduction ring.

Further, the transmission shaft is kept away from one side of outer magnetism steel seat is provided with the cavity, the transmission shaft runs through the lateral wall of cavity, the bearing frame has been inlayed to the cavity, the bearing frame is provided with the bearing, the bearing housing is located on the transmission shaft.

Furthermore, the isolation hood is installed on the side wall of the cavity, the isolation hood and the side wall of the cavity form a sealed cavity, and the outer wrapper, the inner magnetic seat, the nut, part of the transmission shaft and the magnetic conduction ring are all located in the sealed cavity.

Further, a sealing ring is arranged at the joint of the isolation cover and the cavity.

Furthermore, the inner magnetic seat is fixedly connected with the outer wall of the transmission shaft through an inner key.

Further, the outer magnetic steel seat is fixedly connected with the outer wall of the driving shaft through an outer key.

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

the utility model discloses a drive shaft rotates, drives the outer magnetism piece rotation on the outer magnetism steel seat. The inner magnetic block rotates along with the outer magnetic block under the action of magnetic force. The inner magnetic block pushes the inner magnetic base to rotate, so that the inner magnetic base drives the transmission shaft to rotate.

But set up and move the wind ear structure and can automatic air inlet under the drive of outer magnet steel seat, wind advances first heat dissipation channel after through the second heat dissipation channel discharge on the outer magnet steel seat, and the exhaust gas can be taken away and the cage surface on the second heat dissipation channel, and the one end of keeping away from first heat dissipation channel is the air outlet discharge promptly. The wind takes away the heat on the surface of the shielding case and the external magnetic steel seat in the flowing process.

Drawings

Fig. 1 is a schematic structural diagram of a magnetic coupler with air cooling and heat dissipation according to an embodiment of the present invention;

fig. 2 is a schematic view of a cross-sectional structure a-a of a magnetic coupler with air cooling and heat dissipation according to an embodiment of the present invention;

fig. 3 is a left side view structural schematic diagram of a magnetic coupler with air cooling and heat dissipation according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a jug-ear structure according to an embodiment of the present invention.

In the figure:

1. a drive shaft; 2. an outer magnetic steel base; 21. an outer magnetic block; 22. a first heat dissipation channel; 221. an air outlet; 3. A drive shaft; 4. an inner magnetic base; 41. an inner magnetic block; 5. an isolation cover; 51. a seal ring; 6. a jug ear structure; 61. a second heat dissipation channel; 611. an air inlet; 7. a magnetic conductive ring; 8. a nut; 9. wrapping the skin; 10. a chamber; 11. a bearing; 12. an internal bond; 13. an external key.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1, 2, 3 and 4, a magnetic coupler with air cooling and heat dissipation comprises a driving shaft 1, an external magnetic steel seat 2, a transmission shaft 3, an internal magnetic seat 4 and a separation cover 5; the outer magnetic steel seat 2 is sleeved on the driving shaft 1, and a plurality of outer magnetic blocks 21 are uniformly arranged on the axial inner edge of the outer magnetic steel seat 2; the polarities of the plurality of outer magnetic blocks 21 are distributed alternately; the inner magnetic base 4 is sleeved on the transmission shaft 3, and a plurality of inner magnetic blocks 41 are uniformly arranged on the axial outer edge of the inner magnetic base 4; the polarities of the internal magnetic blocks 41 are distributed alternately; the inner magnetic seat 4 is positioned at the inner side of the outer magnetic steel seat 2, and the isolation cover 5 wraps the inner magnetic seat 4 and part of the transmission shaft 3; the isolation cover 5 is in clearance fit with the outer magnetic steel seat 2 and the inner magnetic seat 4; a plurality of first heat dissipation channels 22 which are uniformly distributed are arranged on the axial inner edge of the outer magnetic steel seat 2; a first heat dissipation channel 22 is correspondingly arranged between every two adjacent outer magnetic blocks 21, and the first heat dissipation channel 22 horizontally penetrates through the outer magnetic steel base 2; the outer wall of outer magnetism steel seat 2 is provided with and moves wind ear structure 6, has the second heat dissipation channel 61 that is the L type in the ear structure 6 that moves wind, and the one end of first heat dissipation channel 22 and the one end intercommunication of second heat dissipation channel 61, the other end of second heat dissipation channel 61 are air intake 611, and the other end of first heat dissipation channel 22 is air outlet 221.

The utility model discloses be provided with and move wind ear structure 6 and can automatic air inlet air-out heat dissipation under the drive of outer magnetism steel seat 2, cage 5, drive shaft 1, interior magnet holder 4, outer skin 9, nut 8, internal key 12, outer key 13 all can adopt 316L stainless steel material, and magnetic ring 7 can use the higher material of iron content like 45# steel, A3 steel. The magnetic conductive ring 7 is used for the interference resistance of the inner magnetic block 41; under the rotation of the driving shaft 1, the outer magnetic steel seat 2 rotates along with the driving shaft 1 to drive the outer magnetic block 21 to rotate, and the inner magnetic block 41 rotates along with the outer magnetic block 21 under the action of magnetic force. The inner magnetic block 41 pushes the inner magnetic base 4 to rotate, so that the inner magnetic base 4 drives the transmission shaft 3 to rotate. Interior magnet 41 and outer magnet 21 are at the continuous cutting cage 5 of rotation in-process, make cage 5 produce the heat, but set up and move the wind ear structure 6 and can automatic air inlet under the drive of outer magnetic steel seat 2, the one end that is the first heat dissipation channel 22 of L type is that air intake 611 is rotatory makes wind discharge through second heat dissipation channel 61 on the outer magnetic steel seat 2 after automatic entering first heat dissipation channel 22, the gas of exhaust can be taken away and cage 5 surface on second heat dissipation channel 61, from keeping away from the one end that first heat dissipation channel 22 is air outlet 221 discharges. The wind takes away the heat on the surface of the shielding case 5 and the external magnet steel seat 2 in the flowing process. The problem that the magnetic force is reduced due to the fact that heat generated by the isolation cover 5 is transferred to the magnetic blocks is effectively solved, and the working reliability of the magnetic coupler is improved. The drive shaft 1 is one end for connection to a power source such as a motor.

Further, the direction of the air inlet 611 is consistent with the tangential direction of the axial outer circle of the outer magnetic steel seat 2. As shown in fig. 3, the axial outer edge and the axial inner edge of the outer magnetic steel base 2 may be circular, so that the direction of the air inlet 611 is the same as the tangential direction of the axial outer edge and the axial inner edge of the outer magnetic steel base 2, so that the air inlet 611 may automatically supply air under the driving of the outer magnetic steel base 2 in order to rotate counterclockwise in fig. 3.

Further, the quantity of interior magnetic block 41, the quantity of outer magnetic block 21, the quantity of ear structure 6 that moves about is 6, and 6 recesses have been seted up along the axial of interior magnetic base 4 outward, and magnetic ring 7 has been inlayed to the bottom of 6 recesses, and 6 interior magnetic blocks 41 fill respectively in 6 recesses, and interior magnetic block 41 is located the outside of magnetic ring 7. In the sectional view of A-A, 6 grooves are arranged on the outer

magnetic steel seat

2, 6 outer magnetic blocks 21 are arranged on the 6 grooves, as shown in FIG. 2, the polarity of the outer magnetic blocks 21 is N-S-N-S-N-S in sequence, and the polarity of the inner magnetic blocks 41 is S-N-S-N-S-N in sequence; the other 6 air outlets 221 are formed in a manner that the air outlets are spaced from the outer magnetic block 21, that is, as shown in fig. 2, 6 holes are uniformly formed in the outer magnetic steel base 2 along the axial direction of the left end in fig. 1, 6 air entraining ear structures 6 are inserted into the holes, and the second heat dissipation channels 61 of the air entraining ear structures 6 are all communicated with the first heat dissipation channels 22.

Further, the transmission shaft 3 penetrates through the inner magnetic base 4, a nut 8 is sleeved at one end, close to the outer magnetic steel base 2, of the transmission shaft 3, an outer wrapping 9 is arranged between the inner magnetic base 4 and the isolation cover 5, and the outer wrapping 9 wraps the inner magnetic block 41 and the magnetic conduction ring 7. The outer wrapper 9 can be made of stainless steel materials, the outer wrapper 9 is used for wrapping the inner magnetic block 41 and the magnetic conductive ring 7 and is used for isolating the magnetic block and the magnetic conductive ring 7 after being wrapped, and the magnetic conductive ring 7 and the inner magnetic block 41 are prevented from being corroded.

Further, one side of the transmission shaft 3, which is far away from the outer magnetic steel seat 2, is provided with a cavity 10, the transmission shaft 3 penetrates through the side wall of the cavity 10, a bearing 11 seat is embedded in the cavity 10, the bearing 11 seat is provided with a bearing 11, and the transmission shaft 3 is sleeved with the bearing 11. A bearing 11 seat is arranged for installing a bearing 11, and the rotation precision of the transmission shaft 3 is ensured through the bearing 11.

Furthermore, the isolation cover 5 is installed on the side wall of the chamber 10, the isolation cover 5 and the side wall of the chamber 10 form a sealed cavity, and the outer wrapper 9, the inner magnetic base 4, the nut 8, part of the transmission shaft 3 and the magnetic conduction ring 7 are all located in the sealed cavity. The outer wrapper 9 and the inner magnetic base 4 can be welded to wrap and isolate the magnetic conduction ring 7 and the inner magnetic block 41. Therefore, the inside of the isolation cover 5 can be applied in a strong corrosive environment without corroding the magnetic conduction ring 7 and the inner magnet block 41, thereby prolonging the service life of the whole components of the inner magnet seat 4.

Further, a sealing ring 51 is arranged at the connection part of the isolation cover 5 and the chamber 10. The sealing ring 51 is provided to improve the air tightness of the enclosure 5 so that the enclosure 5 forms a static seal with the outer wall of the chamber 10. The isolation cover 5 and the chamber 10 form a closed working environment, and can be used in severe environments such as strong acid and strong alkali.

Furthermore, the inner magnetic base 4 is fixedly connected with the outer wall of the transmission shaft 3 through an inner key 12. An inner key 12 is arranged for transmitting power between the inner magnetic seat 4 and the transmission shaft 3.

Further, the outer magnet holder 2 is fixedly connected with the outer wall of the driving shaft 1 through an outer key 13. An external key 13 is arranged for transmitting power between the external magnetic steel seat 2 and the driving shaft 1. The inner key 12 and the outer key 13 can be both pressed in a limiting way by a set screw, which is not shown in the drawing.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A magnetic coupler with air cooling and heat dissipation is characterized in that a driving shaft, an outer magnetic steel seat, a transmission shaft, an inner magnetic seat and an isolation cover are arranged; the outer magnetic steel seat is sleeved on the driving shaft, and a plurality of outer magnetic blocks are uniformly arranged on the axial inner edge of the outer magnetic steel seat; the polarities of the plurality of outer magnetic blocks are distributed alternately; the inner magnetic base is sleeved on the transmission shaft, and a plurality of inner magnetic blocks are uniformly arranged on the axial outer edge of the inner magnetic base; the polarities of the plurality of inner magnetic blocks are distributed alternately; the inner magnetic seat is positioned on the inner side of the outer magnetic steel seat, and the isolation cover wraps the inner magnetic seat and part of the transmission shaft; the isolation cover is in clearance fit with the outer magnetic steel seat and the inner magnetic seat;

2. A magnetic coupling with air cooling and heat dissipation as defined in claim 1, wherein:

the direction of the air inlet is consistent with the axial direction and the tangential direction of the excircle of the outer magnetic steel seat.

3. A magnetic coupling with air cooling and heat dissipation as defined in claim 1, wherein:

the quantity of interior magnetic path, the quantity of outer magnetic path, the quantity of ear structure of waving is 6, 6 recesses have been seted up along the axial of interior magnetic base outward, 6 magnetic ring has been inlayed to the bottom of recess, 6 interior magnetic path fills respectively in 6 in the recess, interior magnetic path is located magnetic ring's the outside.

4. A magnetic coupling with air cooling and heat dissipation as defined in claim 3, wherein:

the transmission shaft runs through interior magnetic base, the transmission shaft is close to an pot head of outer magnetic steel seat is equipped with the nut, interior magnetic base with be provided with the outer wrapper between the cage, outer wrapper parcel interior magnetic path and magnetic conduction ring.

5. A magnetic coupling with air cooling and heat dissipation as defined in claim 4, wherein:

the transmission shaft is kept away from one side of outer magnetism steel seat is provided with the cavity, the transmission shaft runs through the lateral wall of cavity, the bearing frame has been inlayed to the cavity, the bearing frame is provided with the bearing, the bearing housing is located on the transmission shaft.

6. A magnetic coupling with air cooling and heat dissipation as defined in claim 5, wherein:

the isolation cover is arranged on the side wall of the cavity, the isolation cover and the side wall of the cavity form a sealed cavity, and the outer wrapper, the inner magnetic seat, the nut, part of the transmission shaft and the magnetic conduction ring are all located in the sealed cavity.

7. A magnetic coupling with air cooling and heat dissipation as defined in claim 6, wherein:

and a sealing ring is arranged at the joint of the isolation cover and the cavity.

8. A magnetic coupling with air cooling and heat dissipation as defined in claim 1, wherein:

the inner magnetic seat is fixedly connected with the outer wall of the transmission shaft through an inner key.

9. A magnetic coupling with air cooling and heat dissipation as defined in claim 1, wherein:

the outer magnetic steel seat is fixedly connected with the outer wall of the driving shaft through an outer key.