Permanent magnet flexible transmission ball mill

Abstract

The utility model discloses a permanent magnet flexible transmission ball mill which comprises a ball mill cylinder and a permanent magnet flexible transmission device, and the permanent magnet flexible transmission device comprises a large gear ring, a base, a gear box, a pinion, a driven rotor, a driving rotor and a motor; wherein the large gear ring is fixed on the ball mill barrel and is used for rotating the ball mill barrel; the small gear is located in the gear box, the gear box is fixed to the base, and the small gear is meshed with the large gear ring and used for rotating the large gear ring; the driven rotor is connected with the pinion and used for controlling the pinion to rotate; a working air gap or a medium is arranged between one end of the driving rotor and the driven rotor, the other end of the driving rotor is connected with a motor, and the driving rotor is used for transmitting torque to the driven rotor through permanent magnet coupling to enable the driven rotor to rotate. The permanent magnet flexible transmission ball mill is simple in structure and good in transmission stability.

Description

Technical Field

[0001] The utility model relates to a ball mill device, in particular to a permanent magnet flexible transmission ball mill. Background Art

[0002] In the mining, chemical, building materials, metallurgy and other industries, industrial ball mill equipment is widely used to crush and mix particulate materials. Ball mill equipment usually uses spherical abrasives to rotate and rub the materials at high speed to achieve the purpose of crushing and mixing. Industrial ball mill equipment generally includes a mill cylinder, a supporting device for supporting the mill cylinder, and a rotary power device. The mill cylinder is a long cylinder with a grinding body installed in it, and the cylinder is made of steel plate. The existing rotary power device generally includes a large ring gear fixed on the mill cylinder, a small gear meshing with the large ring gear, and a motor. The small gear is installed in the gear box, the gear box is fixed on the base, and the motor main shaft is connected to the input shaft of the small gear through a reducer and a universal coupling. When the ball mill is working, the motor drives the small gear to rotate, and the small gear meshes with the large ring gear to drive the mill cylinder to rotate.

[0003] The utility model patent with the announcement number CN213315338U discloses a ball mill, including a ball milling device and a dust-proof sorting device, wherein the ball milling device includes two rectangular blocks, two horizontal connecting plates, a first bearing seat connected to the feeding nozzle of the ball mill, a hollow upper barrel, a second bearing seat connected to the rotating shaft on the right side of the ball mill, a large gear ring, a servo reduction motor, a small gear meshed with the large gear ring, and a discharge cover, wherein the dust-proof sorting device includes an inclined U-shaped discharge trough with a dust-proof cover plate, a feed through hole provided on the dust-proof cover plate, four connecting plates, springs fixedly provided at the bottom of the four connecting plates and fixedly connected to the four support seats, a vibration motor provided on the inclined U-shaped discharge trough, and a discharge screen provided on the inner side of the inclined U-shaped discharge trough. The utility model enables the slag after ball milling to be sorted and discharged immediately, directly sorts out the slag to be crushed again and the steel balls, and directly discharges the powder.

[0004] The utility model patent with publication number CN201701978U discloses a vertical ball mill, which includes an upright bearing bracket, a vertical main shaft is pivotally connected to the bearing bracket, a slurry shaft is connected thereto through a coupling, a cavity surrounds the slurry shaft, and the slurry shaft is provided with a paddle for crushing the incoming coating into powder, the powder is diffused in the cavity, the upper and lower ends of the bearing bracket are respectively provided with bearing covers, the main shaft passes through the bearing cover, a sealing device is provided at the gap between the bearing cover and the main shaft to prevent the powder from escaping from the cavity, and the bearing bracket is a fully enclosed type; one end of a pull rod is fixed to the bearing bracket, and the other end of the pull rod is fixed to a motor frame equipped with a motor; the upper and lower ends of the main shaft are provided with oil seals.

[0005] In the ball mill transmission disclosed in the above two patent applications, if the mill cylinder is heavy, the small gear in the gear box that meshes with the large ring gear will be under very large pressure, the meshing of the small gear and the large ring gear is prone to dislocation due to extrusion, and the small gear is prone to wear and failure, which seriously affects the working efficiency. Summary of the invention

[0006] The invention provides a permanent magnet flexible transmission ball mill, which has a simple structure and good transmission stability.

[0007] The utility model provides a permanent magnet flexible transmission ball mill, comprising a ball mill cylinder, a permanent magnet flexible transmission device, wherein the permanent magnet flexible transmission device comprises a large gear ring, a base, a gear box, a small gear, a passive rotor, an active rotor and a motor;

[0008] Wherein, the large gear ring is fixed on the ball mill cylinder and is used to rotate the ball mill cylinder;

[0009] The pinion is located in a gear box, the gear box is fixed on the base, and the pinion is meshed with the large gear ring to rotate the large gear ring;

[0010] The passive rotor is connected to the pinion gear and is used to control the rotation of the pinion gear;

[0011] A working air gap or medium is arranged between one end of the active rotor and the passive rotor, and the other end of the active rotor is connected to the motor. The active rotor is used to transmit torque to the passive rotor through permanent magnet coupling to make the passive rotor rotate.

[0012] The active rotor and the passive rotor are installed between the motor and the load, which is relatively easy to implement, eliminates the equipment of couplings and reducers, and reduces costs.

[0013] Preferably, the active rotor is composed of at least one set of active rotor discs and a matching active coupling mechanism;

[0014] The active rotor disk is connected to the motor through an active coupling mechanism, and the active rotor disk is used to receive the torque of the motor and transmit the torque to the passive rotor through a working air gap or a medium.

[0015] Preferably, the passive rotor is composed of at least one set of passive rotor disks and a load shaft;

[0016] One end of the passive rotor disc is connected to the pinion gear through a load shaft, and the other end is permanently magnetically coupled with the active rotor disc to receive torque, and the pinion gear is rotated based on the received torque.

[0017] Preferably, a passive coupling mechanism or a braking mechanism is further provided inside the gear box, wherein the passive coupling mechanism or the braking mechanism is connected to one end of the load shaft, and the passive coupling mechanism or the braking mechanism is fixedly connected to the pinion gear.

[0018] Preferably, one of the passive rotor disk and the active rotor disk is a permanent magnet rotor disk, and the other is a permanent magnet coupling rotor disk, and the permanent magnet rotor disk and the permanent magnet coupling rotor disk are coupled via an air gap.

[0019] Preferably, the passive rotor disk and the active rotor disk are coupled via an air gap, and both the passive rotor disk and the active rotor disk are permanent magnet rotor disks.

[0020] Preferably, the permanent magnet rotor disk is composed of a disk surface and a plurality of magnetic materials embedded in grooves in the disk surface and evenly distributed in a radial shape. The material of the disk surface is metal or plastic, and the magnetic material is samarium cobalt or neodymium iron boron permanent magnet.

[0021] Preferably, there are two or more permanent magnetic flexible transmission devices, and the two or more permanent magnetic flexible transmission devices are arranged at two or more positions along the extension direction of the ball mill cylinder.

[0022] Preferably, it also includes a distance device, which is located at the upper part of the gear box. The distance device includes a distance plate and a distance seat. The distance seat is fixed on the gear box. The distance plate is hinged to the inside of the distance seat through a shaft. A plurality of rotatable rollers are fixed on the distance plate, and the rollers are in contact with the tooth tops of the large gear ring.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] The utility model realizes contactless flexible connection through transmission through the passive rotor and the active rotor, has good shock absorption effect, and does not transmit vibration. At the same time, if the load exceeds its overload capacity, causing axial force imbalance, the permanent magnetic disk and the conductor disk are displaced, the air gap between the two disks is automatically enlarged, the torque transmission is slowed down, and it stops automatically. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of the permanent magnet flexible transmission ball mill provided by the utility model;

[0026] Figure 2 A schematic diagram of the structure of the permanent magnetic flexible transmission device provided by the utility model;

[0027] Figure 3 for Figure 1 A partial enlarged view of;

[0028] Figure 4 This is a right side view of the permanent magnetic flexible transmission ball mill provided by the utility model;

[0029] Figure 5 for Figure 4 A partial enlarged view of B.

[0030] Among them, the ball mill barrel 110, the supporting device 120, the permanent magnet flexible transmission device 130, the large gear ring 131, the base 132, the motor 133, the gear box 134, the passive coupling mechanism or the braking mechanism 1341, the pinion 135, the passive rotor 136, the passive rotor disk 1361, the load shaft 1362, the active rotor 137, the active rotor disk 1371, the active coupling mechanism 1372, the spacing device 138, the spacing disk 1381, the spacing seat 1382, the hinge shaft 1383, the roller 1384, the inlet 140, and the outlet 150. DETAILED DESCRIPTION

[0031] like Figure 1 As shown, the permanent magnet flexible transmission ball mill of the utility model includes a ball mill cylinder 110, a supporting device 120 that supports the ball mill cylinder 110, and a permanent magnet flexible transmission device 130. The permanent magnet flexible transmission device 130 includes a large ring gear 131, a base 132, a gear box 134, a pinion 135, a passive rotor 136, an active rotor 137, and a motor 133.

[0032] like Figure 1 As shown, the utility model provides a plurality of permanent magnetic flexible transmission devices 130 fixed on the ball mill barrel 110, which are used for two-point or multi-point synchronous transmission to make the industrial ball mill run more smoothly, reduce the situation where the industrial ball mill system cannot run due to a failure of a flexible transmission device, and avoid overload of the motor. The ball mill barrel 110 is supported by a supporting device 120. The material enters from the material inlet 140 and is discharged from the material outlet 150.

[0033] The large gear ring 131 provided by the utility model is fixed on the ball mill cylinder 110, and the small gear 135 in the gear box 134 is meshed with the large gear ring 131. The large gear ring 131 is rotated by the small gear 135, and the ball mill cylinder 110 is rotated by the large gear ring 131 fixed on the ball mill cylinder 110.

[0034] like Figure 1 and Figure 2 As shown, the active rotor 137 provided by the utility model is composed of at least one set of active rotor disks 1371 and an adaptive active coupling mechanism 1372. One end of the active coupling mechanism 1372 is connected to the active rotor disk 1371, and the other end is connected to the motor 133. A working air gap or medium is set between the active rotor disk 1371 and the passive rotor disk 1361, and permanent magnetic coupling is performed based on the coupling area, so that the torque output by the motor 133 is transmitted to the passive rotor disk 1361 in a non-contact manner.

[0035] like Figure 2 As shown, the passive rotor 136 provided by the utility model is composed of at least one set of passive rotor disks 1361 and a load shaft 1362. One end of the passive rotor disk passes through the pinion 135 through the load shaft 1362, and the other end is permanently magnetically coupled with the active rotor disk 1371 to receive torque so as to rotate the pinion 135. Since it is non-contact connected with the active rotor disk 1361, it has good stability and avoids the transmission of vibration. If overloaded, the active rotor disk 1371 and the passive rotor disk 1361 will produce relative displacement, interrupting the transmission of torque and avoiding the loss of components.

[0036] like Figure 2 As shown, the gear box 134 provided by the utility model is also provided with a passive coupling mechanism or a braking mechanism 1341 inside, the load shaft 1362 is connected to the passive coupling mechanism or the braking mechanism 1341, the passive coupling mechanism or the braking mechanism 1341 is fixedly connected to the pinion 135, the passive coupling mechanism is used to transmit torque to the pinion, and the braking mechanism is used to brake the pinion.

[0037] One of the passive rotor disk 1361 and the active rotor disk 1371 provided by the present invention is a permanent magnet rotor disk, and the other is a permanent magnet coupling rotor disk. The permanent magnet rotor disk and the permanent magnet coupling rotor disk are coupled through an air gap.

[0038] The passive rotor disk 1361 and the active rotor disk 1371 provided by the present invention may also both be permanent magnet rotor disks, and are coupled via the air gap between the permanent magnet rotor disks.

[0039] The permanent magnet rotor disk provided by the utility model is composed of a disk surface and a plurality of magnetic materials embedded in grooves in the disk surface and evenly distributed in a radial shape. The material of the disk surface is metal or plastic, and the magnetic material is samarium cobalt or neodymium iron boron permanent magnet.

[0040] The utility model provides two or more permanent magnetic flexible transmission devices 130, which are arranged at two or more positions along the extension direction of the ball mill cylinder, and can also be connected to one permanent magnetic flexible transmission device.

[0041] like Figure 3 and 4 As shown, the gear box 134 provided by the utility model is fixedly connected to the base 132, and the distance device 138 is fixedly connected to the gear box 134. The gravity of the ball mill cylinder 130 is shared by the distance device 138 and transmitted to the base 132. The ball mill cylinder 30 is jointly supported by the pinion 135 and the distance device 138, and its rotation is more stable.

[0042] like Figure 5As shown, the lower part of the gear box 134 provided by the utility model is fixedly mounted on the base 132, and the upper part of the gear box 134 is provided with a distance device 138 used to keep a reasonable gap between the large gear ring 131 and the pinion 135 when meshing. The distance device 138 includes a distance plate 1381 and a distance seat 1382. The distance seat 1382 is fixed to the gear box 134 by bolts. The width of the distance seat 1382 is smaller than the width of the large gear ring 131. The distance plate 1381 is hinged inside the distance seat 1382 by a hinge shaft 1383. A plurality of rollers 1384 are rotatably fixed on the distance plate 1381, and the upper part of the rollers 1384 is in contact with the tooth tops of the large gear ring 131. The plurality of rollers 1384 are arranged in multiple rows, and the distance between each row is adapted to the tooth pitch of the large gear ring 131. The width of the distance seat 1382 can also be equal to the width of the large gear ring 130.

[0043] The working process of the permanent magnet flexible transmission device 130 of the new flexible transmission industrial ball mill of the utility model is as follows: the active rotor disk 1371 is driven to rotate by the motor 133, so that the two poles of the magnets between the passive rotor disk 1361 and the active rotor disk 1371 overlap with each other to produce a push-pull effect, and the force generated thereby generates a torque for driving the load shaft 1362, and the torque drives the pinion 135 to rotate the large gear ring 130 meshing with the pinion 135, thereby driving the ball mill barrel 110 to rotate.

[0044] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope of the claims of the present invention.

Claims

1. A permanent magnet flexible transmission ball mill, characterized in that: It includes a ball mill barrel and a permanent magnetic flexible transmission device, wherein the permanent magnetic flexible transmission device includes a large gear ring, a base, a gear box, a small gear, a passive rotor, an active rotor and a motor; Wherein, the large gear ring is fixed on the ball mill cylinder and is used to rotate the ball mill cylinder; The pinion is located in a gear box, the gear box is fixed on the base, and the pinion is meshed with the large gear ring to rotate the large gear ring; The passive rotor is connected to the pinion gear and is used to control the rotation of the pinion gear; A working air gap or medium is arranged between one end of the active rotor and the passive rotor, and the other end of the active rotor is connected to the motor. The active rotor is used to transmit torque to the passive rotor through permanent magnet coupling to make the passive rotor rotate.

2. The permanent magnetic flexible transmission ball mill according to claim 1, characterized in that: The active rotor is composed of at least one set of active rotor discs and a matching active coupling mechanism; The active rotor disk is connected to the motor through an active coupling mechanism, and the active rotor disk is used to receive the torque of the motor and transmit the torque to the passive rotor through a working air gap or a medium.

3. The permanent magnetic flexible transmission ball mill according to claim 2, characterized in that: The passive rotor is composed of at least one set of passive rotor disks and a load shaft; One end of the passive rotor disk is connected to the pinion gear through a load shaft, and the other end is permanently magnetically coupled with the active rotor disk to receive torque, and the pinion gear is rotated based on the received torque.

4. The permanent magnetic flexible transmission ball mill according to claim 1, characterized in that: A passive coupling mechanism or a braking mechanism is also provided inside the gear box. The passive coupling mechanism or the braking mechanism is connected to one end of the load shaft, and the passive coupling mechanism or the braking mechanism is fixedly connected to the pinion.

5. The permanent magnetic flexible transmission ball mill according to claim 3, characterized in that: One of the passive rotor disk and the active rotor disk is a permanent magnet rotor disk, and the other is a permanent magnet coupling rotor disk. The permanent magnet rotor disk and the permanent magnet coupling rotor disk are coupled via an air gap.

6. The permanent magnetic flexible transmission ball mill according to claim 3, characterized in that: The passive rotor disk and the active rotor disk are coupled via an air gap, and both the passive rotor disk and the active rotor disk are permanent magnet rotor disks.

7. The permanent magnetic flexible transmission ball mill according to claim 5, characterized in that: The permanent magnet rotor disk is composed of a disk surface and multiple magnetic materials embedded in grooves in the disk surface and evenly distributed in a radial shape. The material of the disk surface is metal or plastic, and the magnetic material is samarium cobalt or neodymium iron boron permanent magnet.

8. The permanent magnetic flexible transmission ball mill according to claim 1, characterized in that: There are two or more permanent magnetic flexible transmission devices, and the two or more permanent magnetic flexible transmission devices are arranged at two or more positions along the extension direction of the ball mill cylinder.

9. The permanent magnetic flexible transmission ball mill according to claim 1, characterized in that: It also includes a distance device, which is located at the upper part of the gear box. The distance device includes a distance plate and a distance seat. The distance seat is fixed on the gear box. The distance plate is hinged to the inside of the distance seat through a shaft. A plurality of rotatable rollers are fixed on the distance plate, and the rollers are in contact with the tooth tops of the large gear ring.

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