CN215655511U

CN215655511U - Ball clamping preventing structure of steel ball mill

Info

Publication number: CN215655511U
Application number: CN202121750822.3U
Authority: CN
Inventors: 滕蔚
Original assignee: Huaian Sifang Insulating Pipe Co ltd
Current assignee: Huaian Sifang Insulating Pipe Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-01-28
Anticipated expiration: 2031-07-30

Abstract

The utility model discloses a ball clamping prevention structure of a steel ball mill, which comprises a cylinder body, an outlet sleeve and a ball clamping prevention device, wherein the inner wall of the cylinder body is provided with a spiral belt I; the barrel and the outlet sleeve are sealed by butter cotton yarn packing; and (4) carrying out carburizing treatment on the inner wall of the cylinder body and the outer wall of the outlet sleeve. The utility model can automatically discharge the small steel balls falling into the gap between the cylinder and the outlet sleeve back into the cylinder through the spiral structure: the spiral direction of the spiral structure is the same as the direction of the spiral belt in the cylinder, and when the cylinder rotates, the steel ball rolls to the middle of the cylinder along the spiral structure. Effectively reduce the wearing and tearing of sealing member butter packing, reduce the number of times of maintaining the change.

Description

Ball clamping preventing structure of steel ball mill

Technical Field

The utility model relates to the field of operation and transportation, in particular to a steel ball milling structure.

Background

The coal mill is a machine for crushing and grinding coal blocks into coal powder, and is an important auxiliary device of a coal powder furnace. The coal grinding process is a process in which coal is crushed and its surface area is increased continuously. The coal is ground into coal powder in a coal mill mainly by three modes of crushing, smashing and grinding. A steel ball coal mill is a main device of a coal powder preparation system of a thermal power station. Meanwhile, the coal pulverizing mill is also suitable for coal pulverizing systems in cement industry, metallurgical industry, chemical industry, sugar industry and the like, and is widely used for pulverizing coal with various hardness.

The steel balls of the ball mill are grinding material media of the ball mill equipment, and the grinding and stripping effect is generated through collision friction between the steel balls of the ball mill and materials, and the steel balls of the ball mill are important basic parts. But the steel balls are worn out in the continuous collision friction and become smaller and smaller. An installation gap is usually formed between the existing steel ball milling barrel and the steel ball milling outlet, and the gap is sealed by a butter packing. In the operation process of the steel ball mill, small steel balls often fall into gaps, continuous abrasion is caused to the barrel walls of the butter packing and the gaps, the butter packing is damaged, even coal dust is leaked, huge workload is brought to maintenance of the coal mill, and the service life of the coal mill is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a ball clamping prevention structure of a steel ball mill, which can reduce the probability of small steel balls falling into a gap between a steel ball mill cylinder and a port, thereby reducing abrasion and reducing maintenance frequency.

The utility model is realized by the following technical scheme:

the utility model provides a ball structure is prevented pressing from both sides by steel ball-milling, including the inner wall be equipped with the barrel that the spiral takes one, with the barrel is coaxial and the cover is located export sleeve in the barrel, the barrel is equipped with helical structure with export sleeve installation coincidence part's barrel inner wall, helical structure direction spiral and barrel inner wall spiral take a spiral direction the same.

Further: the helical structure is a helical groove.

Further: the spiral structure is a spiral belt II.

Further: the second spiral belt is connected with the first spiral belt, and the second spiral belt and the first spiral belt are identical in structure and size.

Further: the barrel body and the outlet sleeve are sealed through a butter cotton yarn packing.

Further: and (4) carrying out carburizing treatment on the inner wall of the cylinder body and the outer wall of the outlet sleeve.

Compared with the prior art, the utility model has the following advantages:

firstly, the utility model can automatically discharge the small steel balls falling into the gap between the cylinder and the outlet sleeve back into the cylinder through the spiral structure: the spiral direction of the spiral structure is the same as the direction of the spiral belt in the cylinder, and when the cylinder rotates, the steel ball rolls to the middle of the cylinder along the spiral structure. Effectively reduce the wearing and tearing of sealing member butter packing, reduce the number of times of maintaining the change.

Secondly, the utility model has simple and reliable structure.

And thirdly, the abrasion of the equipment at the joint is reduced, and the service life of the equipment is prolonged.

Fourthly, the coal powder leakage probability is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 2 is a schematic structural view of the cartridge;

FIG. 3 is an enlarged view of view A of FIG. 1;

in the figure: 1. a barrel; 2. a first spiral belt; 3. an outlet sleeve; 4. packing butter cotton yarn; 5. and a second spiral belt.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The first embodiment is as follows:

a steel ball milling ball-clamping prevention structure comprises a barrel body 1 with a spiral belt I2 on the inner wall and an outlet sleeve 3 which is coaxial with the barrel body 1 and is sleeved in the barrel body 1, wherein a spiral groove is formed in the inner wall of the barrel body 1 at the part where the barrel body 1 and the outlet sleeve 3 are overlapped, and the spiral direction of the spiral groove is the same as the spiral direction of the spiral belt on the inner wall of the barrel body 1; the barrel 1 and the outlet sleeve 3 are sealed by a butter cotton yarn packing 4; the inner wall of the cylinder body 1 and the outer wall of the outlet sleeve 3 are carburized.

The utility model in the embodiment works:

when the coal mill works, the cylinder body 1 rotates, and the spiral belt I2 drives the steel ball to move towards the direction opposite to the outlet direction. The direction of the spiral groove is the same as the direction of the spiral belt 2 on the inner wall of the barrel 1, so that the small steel balls falling into the gap between the barrel 1 and the outlet sleeve 3 slide back into the barrel 1 along the spiral groove and are discharged from the gap, and the abrasion of the small steel balls on the butter packing 4 can not be caused.

Example two:

a ball clamping prevention structure of a steel ball mill comprises a cylinder body 1 with a first spiral belt 2 on the inner wall, and an outlet sleeve 3 coaxial with the cylinder body 1 and sleeved in the cylinder body 1, wherein a second spiral belt 5 is arranged on the inner wall of the cylinder body 1 at the part where the cylinder body 1 and the outlet sleeve 3 are overlapped, the direction of the second spiral belt 5 is the same as the direction of the first spiral belt 2 on the inner wall of the cylinder body 1, the second spiral belt 5 is connected with the first spiral belt 2, and the second spiral belt 5 and the first spiral belt 2 are the same in structure and size; the barrel 1 and the outlet sleeve 3 are sealed by a butter cotton yarn packing 4; the inner wall of the cylinder body 1 and the outer wall of the outlet sleeve 3 are carburized.

The utility model in the embodiment works:

the working mode of the present embodiment is substantially the same as that of the first embodiment, except that: the small steel balls falling into the gap are brought back into the cylinder body 1 through the second spiral belt 5. It is worth mentioning that: the second spiral belt 5 is a bulge on the inner wall of the cylinder body 1, so that a gap between the cylinder body 1 and the outlet sleeve 3 can be filled, and the probability that the small balls fall into the gap is reduced. In addition, the second spiral belt 5 is connected with the first spiral belt 2, and the second spiral belt 5 and the first spiral belt 2 are identical in structure and size, so that the second spiral belt 5 can be regarded as extending of the first spiral belt 2, procedures for processing the spiral belts are reduced, and the processing cost of the barrel 1 is reduced.

The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a ball structure is prevented pressing from both sides by steel ball-milling, be equipped with barrel (1) of spiral area (2) including the inner wall, with barrel (1) is coaxial and the cover is located export sleeve (3) in barrel (1), its characterized in that: barrel (1) and export sleeve (3) installation coincidence portion's barrel (1) inner wall is equipped with helical structure, helical structure direction spiral is the same with barrel (1) inner wall spiral belt one (2) spiral direction.

2. The steel ball milling anti-pinch ball structure of claim 1, which is characterized in that: the helical structure is a helical groove.

3. The steel ball milling anti-pinch ball structure of claim 1, which is characterized in that: the spiral structure is a spiral belt II (5).

4. The steel ball milling anti-pinch ball structure of claim 3, which is characterized in that: the second spiral belt (5) is connected with the first spiral belt (2), and the second spiral belt (5) and the first spiral belt (2) are identical in structure and size.

5. The steel ball milling anti-pinch ball structure of claim 1, which is characterized in that: the barrel body (1) and the outlet sleeve (3) are sealed by a butter cotton yarn packing (4).

6. The steel ball milling anti-pinch ball structure of claim 1, which is characterized in that: the inner wall of the cylinder body (1) and the outer wall of the outlet sleeve (3) are carburized.