CN216704573U

CN216704573U - Annular permanent magnet gearless ball mill

Info

Publication number: CN216704573U
Application number: CN202220001194.7U
Authority: CN
Inventors: 温建伟; 李应龙; 郝维岩; 范修贞; 刘欣; 徐世群; 高伟伟; 刘建哲; 杨东斌; 徐坚栋; 宫琳清
Original assignee: Shanjin Heavy Industry Co ltd
Current assignee: Shanjin Heavy Industry Co ltd
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2022-06-10
Anticipated expiration: 2032-01-04

Abstract

The utility model discloses an annular permanent magnet gearless ball mill, wherein a base part is connected with a bearing part and a cylinder part, two ends of the cylinder part are both connected with the bearing part, one end of the cylinder part is connected with a feeding part and supported on the bearing part, and the feeding part is connected with a feeder; the other end of the cylinder body part is connected with the discharging part and supported on the bearing part; the ball mill is characterized in that the base part is connected with an annular permanent magnet direct drive motor connected with a control box of the ball mill, a motor stator of the annular permanent magnet direct drive motor is connected to the base part, a motor rotor of the annular permanent magnet direct drive motor is directly connected with one side of a cylinder body part of the ball mill through a motor rotor support and a cylinder flange, and the base part is connected with a braking part connected with the cylinder body part.

Description

Annular permanent magnet gearless ball mill

Technical Field

The utility model relates to an annular permanent magnet gearless ball mill, and belongs to the technical field of ball mills.

Background

The ball mill is the key equipment for crushing the materials after the materials are crushed. It is widely used in the production industries of cement, silicate products, novel building materials, refractory materials, chemical fertilizers, black and non-ferrous metal ore dressing, glass ceramics and the like, and is used for dry or wet grinding of various ores and other grindable materials. The ball mill as main ore grinding equipment cannot be replaced in the whole ore dressing process, the power of the whole mill is different from 18.5kw to 1950kw according to different equipment specifications, and in recent years, as the size of the mill selection is larger and larger, the ball mill tends to be large-sized, and under the conditions of large power and high energy consumption, the motor energy efficiency and the transmission efficiency are improved, and the energy-saving effect of the ball mill is particularly important. The traditional ball mill consists of a horizontal barrel, a feeding and discharging hollow shaft, a grinding head and the like, wherein a power part is formed by connecting a motor with a coupler to drive a speed reducer, the speed reducer is connected with a small gear through the coupler, the small gear drives a large gear, and the large gear drives the barrel to rotate to complete power conversion. The ball mill barrel is provided with a grinding body, the barrel is made of steel plates, a wear-resistant lining plate is fixed with the barrel, the grinding body is generally steel balls or steel sections and is filled into the barrel according to different diameters and a certain proportion, materials are filled into the barrel from a hollow shaft at the feeding end of the ball mill, when the ball mill barrel rotates, the grinding body is attached to the lining plate of the barrel and taken away by the barrel under the action of inertia and centrifugal force and friction force, when the ball mill barrel is taken to a certain height, the grinding body is thrown down under the action of gravity of the grinding body, and the falling grinding body breaks the materials in the barrel like a projectile body. The materials and the grinding body slide along the inner wall of the cylinder body in the cylinder body, and in the process, the materials and the grinding body rub against each other to finish the grinding operation of the materials.

The traditional ball mill has the advantages of complex equipment structure, low motor efficiency, large loss of multi-stage transmission capacity, frequent occurrence of reducer faults, high operation and maintenance cost and relatively low automation degree, and the ball mill has the advantages of high material consumption and electric energy consumption, uneven product granularity and low energy utilization rate in the whole process flow, thereby reducing the energy consumption of the ball mill and improving the energy conversion efficiency of the ball mill, being a breakthrough for saving a large amount of mine electric energy, and meeting the requirements of national green mine construction for energy conservation and consumption reduction.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide an annular permanent magnet gearless ball mill.

The technical scheme provided by the utility model is as follows: an annular permanent magnet gearless ball mill comprises a base part, wherein a bearing part and a cylinder part are connected to the base part, the bearing parts are connected to two ends of the cylinder part, one end of the cylinder part is connected with a feeding part and supported on the bearing part, and the feeding part is connected with a feeder; the other end of the cylinder body part is connected with the discharging part and supported on the bearing part; the ball mill is characterized in that the base part is connected with an annular permanent magnet direct drive motor connected with a control box of the ball mill, a motor stator of the annular permanent magnet direct drive motor is connected to the base part, a motor rotor of the annular permanent magnet direct drive motor is directly connected with one side of a cylinder body part of the ball mill through a motor rotor support and a cylinder flange, and the base part is connected with a braking part connected with the cylinder body part.

Furthermore, the braking part comprises a rotary part brake disc connected with the circumference of the cylinder part and a brake base connected with the base part, the brake base is connected with a normally open type hydraulic caliper brake, and the rotary part brake disc is arranged in a brake pad of the normally open type hydraulic caliper brake; the rotating part brake disc is uniformly provided with a plurality of pin shaft jacks, the brake base is provided with pin shaft holes matched with the pin shaft jacks, and the rotating part brake disc is fixed by inserting pin shafts into the pin shaft jacks and the pin shaft holes; the brake base is provided with a contact sensor for detecting whether the pin shaft penetrates through the brake disc of the rotary part, and the contact sensor is connected with a control box of the ball mill.

Furthermore, the brake base is provided with an upper pin shaft hole and a lower pin shaft hole which are matched with the pin shaft insertion holes.

Furthermore, a contact sensor is arranged on the brake base on two sides of each pin shaft hole respectively.

Furthermore, carbon brush parts are arranged between two ends of the barrel part and the bearing part, and carbon brush rings are arranged on the end cover hollow shaft neck of the feeding part and the end cover hollow shaft neck of the discharging part.

Furthermore, the carbon brush part comprises a carbon brush seat fixed on the bearing part, the lower end of the carbon brush seat is connected with at least one brush holder, two ends of the brush holder are respectively provided with a carbon brush groove, a carbon brush is arranged in the carbon brush groove, the upper end of the carbon brush is provided with a spring, the spring is pressed through a U-shaped spring piece inserted into the carbon brush groove, and the spring presses and pushes the carbon brush out to be contacted with the carbon brush ring; the brush holder is provided with a wire, one end of the wire is connected with the carbon brush, the other end of the wire is grounded, the wire is compressed through a compression bolt, and an insulating rod is arranged between the carbon brush holder and the brush holder.

Furthermore, the cylinder body part is formed by connecting two parts of cylinders through a flange and an end cover by bolts.

Furthermore, a motor rotor support of the annular permanent magnet direct-drive motor is positioned and connected through a cylinder flange, and the cylinder flange and the motor rotor support are positioned through a spigot.

The utility model has the beneficial effects that:

1. the ball mill cylinder is driven by the annular permanent magnet direct drive motor arranged on the ball mill cylinder, the motor rotor of the motor is fixed on a ball mill cylinder flange plate through the motor rotor bracket, the motor stator of the motor is fixed on the ground base part, when the motor is electrified, the motor rotor rotates, the motor rotor directly drives the ball mill cylinder to rotate to realize grinding, complex transmission devices such as a motor, a coupler, a speed reducer, a large gear and a small gear of the traditional ball mill are eliminated, a middle transmission link is simplified, energy loss, mechanical consumption and lubrication consumption caused by the middle transmission link are avoided, the equipment maintenance period is prolonged, the system efficiency can be improved by 20% -35%, the operation cost is reduced, the quality is reliable, the maintenance period is long, and the mechanical transmission efficiency is improved.

2. The cylinder body part is formed by connecting two parts of cylinders through flanges and end covers by bolts, in the normal operation process of the ball mill, because the cylinders bear larger torque, a motor rotor of the annular permanent-magnet direct-drive motor is directly connected with one side of the cylinder body part of the ball mill through a motor rotor support, the bolts and the cylinder flange, the motor rotor support of the annular permanent-magnet direct-drive motor is positioned and connected through the cylinder flange, and in order to ensure an air gap between a motor stator and the motor rotor when the annular permanent-magnet direct-drive motor operates, the cylinder flange and the motor rotor support adopt a spigot positioning mode.

3. The other side of the cylinder body part is provided with a braking part for stopping and braking the ball mill, the braking part has an interlocking function and comprises a rotary part brake disc, a normally open hydraulic caliper brake, a contact sensor and the like, and the annular permanent magnet direct drive motor cannot be started when the contact sensor detects a pin shaft; the annular permanent magnet direct drive motor can be started only when the brake is released and the contact sensor detects that no pin shaft exists; the brake does not brake when the annular permanent magnet direct drive motor operates. The mode of hydraulic pressure and mechanical combined braking is adopted, the pin shaft jack is processed on the brake disc, the upper pin shaft hole and the lower pin shaft hole are arranged on the brake base, when the ball mill is stopped and braked, the normally open hydraulic caliper type brake tightly holds the brake disc, the pin shaft penetrates through the pin shaft hole on the brake base and the pin shaft jack on the brake disc, and therefore the dual braking mode is achieved, and an operator can conveniently enter the inside of the ball mill to overhaul. And be provided with 4 contact sensors altogether in round pin shaft hole both sides for whether the detection round pin axle passes the brake disc, detection signal transmission to ball mill control box, when any one of 4 contact sensors detected the signal, normally open hydraulic pressure jaw type stopper will be unable to open, and annular permanent magnetism directly drives the unable operation of motor. When the 4 contact sensors do not detect signals, the ball mill control box controls the normally open hydraulic pincer type brake to be opened, the annular permanent magnet direct drive motor is started to operate, and the ball mill can be started to operate normally. The utility model adopts a double-braking and interlocking control mode, not only improves the intrinsic safety performance of the equipment, but also can effectively ensure the stability of the ball mill after the shutdown and ensure the safety of maintenance operators.

4. When the annular permanent magnet direct drive motor operates, a magnetic induction line is cut to form capacitance coupling common mode voltage on a motor shaft, and shaft voltage discharges to generate shaft current; the bearing portion is subjected to electro-corrosion in the discharging process, friction and noise of the bearing portion are increased, finally, grooves of the bearing portion are damaged, the bearing portion fails, and then the air gap of the motor is influenced, so that the motor is in failure. The utility model is provided with the carbon brush part for eliminating shaft current and protecting the bearing part and the annular permanent magnet direct drive motor.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a schematic structural view of the braking portion of the present invention;

FIG. 4 is a schematic structural view of a carbon brush part according to the present invention.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings in which:

as shown in fig. 1 to 4, the annular permanent magnet gearless ball mill comprises a base part 5, wherein a bearing part 3, a braking part 4, a barrel part 6 and an annular permanent magnet direct drive motor 8 are connected to the base part 5. Bearing portions 3 are connected to both ends of the cylindrical portion 6, and carbon brush portions 7 are provided between both ends of the cylindrical portion 6 and the bearing portions 3. The barrel part 6 is composed of two parts of barrels connected by bolts through a flange and an end cover, one end of the barrel part 6 is connected with the feeding part 2 and is supported on the bearing part 3 through an end cover hollow journal of the feeding part 2, and the feeding part 2 is connected with the feeder 1. The other end of the cylindrical body 6 is connected with the discharging part 9 and supported on the bearing part 3 through an end cover hollow journal of the discharging part 9. The feeder 1, the feeding part 2, the barrel part 6 and the discharging part 9 constitute a revolving part of the ball mill. Carbon brush rings are arranged on the end cover hollow shaft neck of the feeding part 2 and the end cover hollow shaft neck of the discharging part 9.

The annular permanent-magnet direct-drive motor 8 can be an existing annular permanent-magnet direct-drive motor, a motor stator 81 of the annular permanent-magnet direct-drive motor 8 is installed on the base portion 5, a motor rotor 82 of the annular permanent-magnet direct-drive motor 8 is directly connected with one side of a cylinder portion 6 of the ball mill through a motor rotor support, bolts and a cylinder flange, the motor rotor 82 rotates during operation, and a rotary portion of the ball mill is driven to rotate at a certain speed through the cylinder portion 6. The motor rotor support of the annular permanent-magnet direct-drive motor 8 is positioned and connected through the barrel flange, and in order to ensure an air gap between a motor stator and a motor rotor when the annular permanent-magnet direct-drive motor operates, the barrel flange and the motor rotor support adopt a spigot positioning mode.

The braking portion 4 comprises a rotary portion brake disc 45 connected to the circumference of the barrel portion 6 and a brake base 42 connected to the base portion 5, the normally open type hydraulic caliper brake 41 is connected to the brake base 42, and the rotary portion brake disc 45 is disposed in a brake pad of the normally open type hydraulic caliper brake 41. The rotating portion brake disc 45 is evenly provided with a plurality of pin shaft insertion holes 46, the brake base 42 is provided with an upper pin shaft hole 47 and a lower pin shaft hole 47 matched with the pin shaft insertion holes 46, and the rotating portion brake disc 45 is fixed by inserting the pin shafts 44 into the pin shaft insertion holes 46 and the pin shaft holes 47. On the stopper base 42, 4 (one on each side of each pin shaft hole) contact sensors 43 are arranged on both sides of the pin shaft hole 47, and the contact sensors 43 and the annular permanent magnet direct drive motor 8 are connected to a control box of the ball mill. The contact sensors 43 are used for detecting whether the pin shaft penetrates through the rotary portion brake disc 45 or not, detection signals are transmitted to a control box of the ball mill, when any one of the 4 contact sensors 43 detects the signals, the normally open type hydraulic caliper brake 41 cannot be opened, and the annular permanent magnet direct drive motor 8 cannot operate. When the 4 contact sensors do not detect signals, the control box of the ball mill controls the normally open hydraulic caliper brake 41 to be opened, the annular permanent magnet direct drive motor 8 is started to operate, and the ball mill can be started to operate normally.

The carbon brush part 7 includes a carbon brush base 71 fixed on the bearing part 3, the lower end of the carbon brush base 71 is connected with at least one (3 in this embodiment) brush holder 72, both ends of the brush holder 72 are provided with carbon brush grooves 75, carbon brushes 73 are arranged in the carbon brush grooves 75, the upper ends of the carbon brushes 73 are provided with springs 76, the springs 76 are pressed by U-shaped spring pieces 77 inserted into the carbon brush grooves 75, and the springs 76 press and push out the carbon brushes 73, so that the carbon brushes 73 are in contact with the carbon brush rings. The brush holder 72 is provided with a wire, one end of the wire is connected with the carbon brush 73, the other end of the wire is grounded, the wire is pressed tightly through the pressing bolt 78, and the insulating rod 74 is arranged between the carbon brush holder 71 and the brush holder 72.

When the barrel portion 6 stops rotating and needs to be overhauled, the normally open type hydraulic caliper brake 41 clamps and brakes the rotating portion brake disc 45, and simultaneously inserts the pin shaft 44 into the pin shaft insertion hole 46 and the pin shaft hole 47 to fix the rotating portion brake disc 45, so that double braking of the barrel portion 6 is realized. When the barrel part 6 is required to rotate, the normally open type hydraulic caliper brake 41 releases the rotary part brake disc 45 and pulls out the pin shaft 44, the contact sensor 43 senses a signal, and the annular permanent magnet direct drive motor 8 is controlled to work through the control box.

It should be understood that parts of the specification not set forth in detail are well within the prior art. The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An annular permanent magnet gearless ball mill comprises a base part, wherein a bearing part and a cylinder part are connected to the base part, the bearing parts are connected to two ends of the cylinder part, one end of the cylinder part is connected with a feeding part and supported on the bearing part, and the feeding part is connected with a feeder; the other end of the cylinder body part is connected with the discharging part and supported on the bearing part; the ball mill is characterized in that the base part is connected with an annular permanent magnet direct drive motor connected with a control box of the ball mill, a motor stator of the annular permanent magnet direct drive motor is connected to the base part, a motor rotor of the annular permanent magnet direct drive motor is directly connected with one side of a cylinder body part of the ball mill through a motor rotor support and a cylinder flange, and the base part is connected with a braking part connected with the cylinder body part.

2. The annular permanent magnet gearless ball mill of claim 1, wherein the brake part comprises a rotor brake disc connected to the circumference of the cylinder part, and a brake base connected to the base part, wherein the brake base is connected to a normally open hydraulic caliper brake, and the rotor brake disc is disposed in a brake pad of the normally open hydraulic caliper brake; the rotating part brake disc is uniformly provided with a plurality of pin shaft jacks, the brake base is provided with pin shaft holes matched with the pin shaft jacks, and the rotating part brake disc is fixed by inserting pin shafts into the pin shaft jacks and the pin shaft holes; the brake base is provided with a contact sensor for detecting whether the pin shaft penetrates through the brake disc of the rotary part, and the contact sensor is connected with a control box of the ball mill.

3. The annular permanent magnet gearless ball mill of claim 2, wherein the brake base is provided with an upper pin shaft hole and a lower pin shaft hole which are matched with the pin shaft insertion holes.

4. An annular permanent magnet gearless ball mill according to claim 2 or 3, wherein the brake base is provided with a contact sensor on each side of each pin shaft bore.

5. The annular permanent magnet gearless ball mill of claim 1, wherein carbon brush portions are disposed between both ends of the barrel portion and the bearing portion, and carbon brush rings are disposed on both the end cover hollow journal of the feeding portion and the end cover hollow journal of the discharging portion.

6. The annular permanent magnet gearless ball mill of claim 5, wherein the carbon brush portion comprises a carbon brush holder fixed on the bearing portion, the lower end of the carbon brush holder is connected with at least one brush holder, the two ends of the brush holder are provided with carbon brush grooves, carbon brushes are arranged in the carbon brush grooves, the upper ends of the carbon brushes are provided with springs, the springs are pressed by U-shaped spring pieces inserted into the carbon brush grooves, and the springs press and eject the carbon brushes to be in contact with the carbon brush rings; the brush holder is provided with a wire, one end of the wire is connected with the carbon brush, the other end of the wire is grounded, the wire is compressed through a compression bolt, and an insulating rod is arranged between the carbon brush holder and the brush holder.

7. An annular permanent magnet gearless ball mill according to claim 1, wherein the cylinder body is formed by connecting two cylinder bodies through a flange and an end cover by bolts.

8. The annular permanent magnet gearless ball mill of claim 1, wherein a motor rotor support of the annular permanent magnet direct drive motor is positioned and connected through a cylinder flange, and the cylinder flange and the motor rotor support are positioned by adopting a spigot.