CN111185280A

CN111185280A - Permanent magnet driving ball mill

Info

Publication number: CN111185280A
Application number: CN202010137765.5A
Authority: CN
Inventors: 冯韵娇
Original assignee: Dalian Guanli Motor Technology Co ltd
Current assignee: Dalian Guanli Motor Technology Co ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-05-22

Abstract

The utility model provides a permanent magnetism drive ball mill, belongs to ball mill technical field, including the barrel, the barrel is through the hollow journal supporting on the barrel bearing frame, the barrel drives the barrel rotation through drive arrangement, the barrel outer wall is equipped with little permanent magnet, the barrel outside is equipped with the electropermanent magnet, little permanent magnet corresponds the setting with the electropermanent magnet. The ball mill supplies power alternately through the static long-strip electro-permanent magnets arranged below the cylinder body to ensure that small magnets distributed on the cylinder body obtain suction in the tangential direction, so that the cylinder body rotates at a constant speed under the attraction of the electro-permanent magnets and the magnets, and the purpose of saving electricity is achieved.

Description

Permanent magnet driving ball mill

Technical Field

The invention belongs to the technical field of ball mills, and particularly relates to a permanent magnet driven ball mill.

Background

Ball mills are important industrial machinery. When the ball mill is driven to a certain height, the grinding balls are thrown off under the action of the gravity of the grinding balls, and the falling grinding bodies smash the materials in the cylinder like a projectile. The grinding operation is completed after several times of crushing and grinding. The traditional ball mill adopts a motor and a speed reducing mechanism to drive a cylinder to rotate, so that the electric energy consumption is large, especially in the grinding stage, the energy consumption is the largest, and the operation efficiency is low. Therefore, practice summary needs more crushing and less grinding, the grinding stage is constant speed operation, the ball mill has longer working time, the energy consumption is the same, and the operation efficiency is low.

Disclosure of Invention

In order to overcome the technical problem, the invention provides a permanent magnet driven ball mill which is characterized in that a small magnet distributed on a cylinder obtains suction force in the tangential direction through alternate power supply of a static long-strip electro-permanent magnet arranged below the cylinder, so that the cylinder rotates at a constant speed under the suction force of the electro-permanent magnet and the magnet, and the aim of saving electricity is fulfilled.

The invention adopts the following technical scheme:

the utility model provides a permanent magnetism drive ball mill, includes the barrel, the barrel is through the hollow journal supporting on the barrel bearing frame, the barrel drives the barrel rotation through drive arrangement, the barrel outer wall is equipped with little permanent magnet, the barrel outside is equipped with the electropermanent magnet, little permanent magnet corresponds the setting with the electropermanent magnet.

Furthermore, the driving device comprises a low-speed large-torque motor and a cylinder driving end belt pulley, and the output end of the low-speed large-torque motor is connected with a bearing of the cylinder through the cylinder driving end belt pulley.

Further, the small permanent magnets are evenly distributed on the outer wall of the cylinder at equal intervals.

Furthermore, the electric permanent magnet is in a strip shape and is arranged below the cylinder body, and the electric permanent magnet corresponds to the small permanent magnet on the cylinder body.

Furthermore, the bottom of the electropermanent magnet is fixed on the base through an electropermanent magnet fixing plate and a long-strip electropermanent magnet group bracket.

Furthermore, the electric permanent magnet fixing plate is arc-shaped and matched with the cylinder.

Furthermore, a grid plate is arranged in the cylinder body.

The invention has the advantages and effects that:

the invention uses the static long-strip electro-permanent magnet arranged below the cylinder body to supply power alternately to ensure that small magnets distributed on the cylinder body obtain attraction in the tangential direction, so that the cylinder body rotates at constant speed under the attraction of the electro-permanent magnet and the magnets, and the aim of saving electricity is fulfilled. The invention has reasonable design, simple and compact structure and convenient operation, maintenance and repair, and provides an effective way for saving energy and improving the grinding efficiency of the ball mill.

Drawings

FIG. 1 is a schematic view of a permanent magnet driven ball mill according to the present invention;

FIG. 2 is a left side schematic view of FIG. 1;

FIG. 3 is a schematic top view of FIG. 1;

FIG. 4 is a schematic view taken along the line A-A of FIG. 1;

fig. 5 is an enlarged schematic view of the small permanent magnet at M in fig. 4.

In the figure: 1. The low-speed large-torque motor comprises a low-speed large-torque motor body 2, a cylinder body driving end belt pulley 3, a cylinder body bearing seat 4, a connecting screw 5, an end cover 6, a cylinder body 7, a long-strip electric permanent magnet group support 8, an electric permanent magnet 9, an electric permanent magnet fixing plate 10, a feeding cylinder 11, a cylinder body bearing seat support 12, a base 13, a small permanent magnet 14, a small permanent magnet fixing screw 15, a motor output shaft belt pulley 16, a belt 17, a low-speed large-torque motor support 18, a ceramic ball 19 and a grid plate.

Detailed Description

The invention is further explained below with reference to the figures and the examples.

The invention relates to a permanent magnet driven ball mill in a uniform rotation state, which mainly comprises a cylindrical barrel, a bearing, a transmission belt pulley, a belt, a motor, a long-strip electric permanent magnet, a small permanent magnet and the like, wherein non-magnetic attraction non-metallic ceramic balls are filled in the barrel. The two ends of the cylinder are provided with end covers which are connected with flanges at the end parts of the cylinder by screws, the middle part of each end cover is provided with a hole called as a hollow journal, the hollow journal is supported on a bearing, and the cylinder can rotate. In the driving device, a low-speed large-torque motor drives a cylinder body to rotate through a belt pulley and a belt. When the cylinder rotates, the non-magnetic ceramic balls attracted by the grinding body rise to a certain height along with the cylinder and then fall in a parabola shape or fall in a cascade shape. Because there is the cavity axle journal on the end cover, the barrel is fed into from the feeding section of thick bamboo in left side to the material to gradually right side diffusion removes, when the material from the removal in-process of left side right side, rotatory barrel will not have the non-magnetic attraction non-metallic ceramic ball to take to certain height and fall and smash the material, and the non-magnetic attraction non-metallic ceramic ball of a part becomes to cascade down the state at the barrel and has the grinding effect to the material, whole removal process also is the crushing process of material. The ball mill driven by the low-speed large-torque motor overcomes the defects that when feeding is carried out, large torque and large current enter a constant speed state, through power supply conversion, static long-strip electro-permanent magnets arranged below the cylinder body are powered alternately to enable small magnets distributed on the cylinder body to obtain suction in the tangential direction, and therefore the cylinder body rotates at a constant speed under the electro-permanent magnets and the suction of the magnets, and the purpose of saving power is achieved. The invention has reasonable design, simple and compact structure and convenient operation, maintenance and repair, and provides an effective way for saving energy and improving the grinding efficiency of the ball mill.

Example 1

The utility model provides a permanent magnetism drive ball mill, includes barrel 6, barrel 6 is through the hollow journal supporting on barrel bearing frame 3, barrel 6 drives the barrel rotation through drive arrangement, drive arrangement includes low-speed big torque motor 1, barrel drive end belt pulley 2, the bearing of 1 output of low-speed big torque motor and barrel 6 links to each other through barrel drive end belt pulley 2. The outer wall of the cylinder 6 is provided with small permanent magnets 13, and the small permanent magnets 13 are uniformly distributed on the outer wall of the cylinder 6 at equal intervals and fixed by small permanent magnet fixing screws 14. An electropermanent magnet 8 is arranged below the outer part of the cylinder 6, the electropermanent magnet 8 is in a long strip shape and is arranged below the cylinder 6, and the bottom of the electropermanent magnet 8 is fixed on a base 12 through an electropermanent magnet fixing plate 9 and a long strip electropermanent magnet group support 7. The bar-shaped electropermanent magnets 8 can be arranged into odd 3 blocks and are uniformly fixed on an electropermanent magnet fixing plate 9, and the electropermanent magnet fixing plate 9 is arc-shaped and matched with the cylinder 6. The bar-shaped electro-permanent magnet 8 can drive the small permanent magnet 13 through alternating, a grid plate 19 is arranged in the cylinder body 6, and the grid plate 19 is in the prior art.

Claims

1. The utility model provides a permanent magnetism drive ball mill, includes barrel (6), its characterized in that: the cylinder (6) is supported on the cylinder bearing seat (3) through a hollow shaft neck, the cylinder (6) drives the cylinder to rotate through a driving device, a small permanent magnet (13) is arranged on the outer wall of the cylinder (6), an electric permanent magnet (8) is arranged outside the cylinder (6), and the small permanent magnet (13) and the electric permanent magnet (8) are arranged correspondingly.

2. A permanent magnet driven ball mill according to claim 1, characterized in that: the driving device comprises a low-speed large-torque motor (1) and a cylinder driving end belt pulley (2), wherein the output end of the low-speed large-torque motor (1) is connected with a bearing of the cylinder (6) through the cylinder driving end belt pulley (2).

3. A permanent magnet driven ball mill according to claim 1, characterized in that: the small permanent magnets (13) are uniformly distributed on the outer wall of the cylinder (6) at equal intervals.

4. A permanent magnet driven ball mill according to claim 1, characterized in that: the electropermanent magnet (8) is in a long strip shape and is arranged below the cylinder body (6), and the electropermanent magnet (8) corresponds to the small permanent magnet (13) on the cylinder body (6).

5. A permanent magnet driven ball mill according to claim 4, characterized in that: the bottom of the electropermanent magnet (8) is fixed on the base (12) through an electropermanent magnet fixing plate (9) and a long-strip electropermanent magnet group bracket (7).

6. A permanent magnet driven ball mill according to claim 5, characterized in that: the electric permanent magnet fixing plate (9) is arc-shaped and matched with the cylinder body (6).

7. A permanent magnet driven ball mill according to claim 1, characterized in that: a grid plate (19) is arranged in the cylinder body (6).