CN218377658U

CN218377658U - Cylinder sealing device for rod mill

Info

Publication number: CN218377658U
Application number: CN202221983051.7U
Authority: CN
Inventors: 王大海; 张�焕; 杜文帅; 蔡兴浪
Original assignee: Shilian Chemical Jiangsu Co ltd
Current assignee: Shilian Chemical Jiangsu Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2023-01-24
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses a barrel sealing device for rod mill belongs to rod mill technical field, the utility model discloses a sealing device includes T type bolt, nut, bowl type gland, rubber circle, blotter, section of thick bamboo wall and rod mill rubber welt, and rod mill rubber welt passes through T type bolt fastening, and T type bolt passes from the section of thick bamboo wall of mill, and clearance embedding cushion between T type bolt and the section of thick bamboo wall forms the internal seal, and T type bolt passes and sheathes rubber circle, bowl type gland and nut in proper order after the section of thick bamboo wall and fastens and form the external seal. The inner and outer two-stage sealing improves the sealing effect of the barrel of the rod mill, reduces the probability of failure of the sealing of the barrel, and fundamentally avoids the slurry leakage of the barrel.

Description

Cylinder sealing device for rod mill

Technical Field

The utility model belongs to the technical field of the rod mill, concretely relates to barrel sealing device for rod mill.

Background

In actual production, the problem of slurry leakage frequently occurs in a cylinder of the rod mill, equipment needs to be frequently started and stopped to eliminate the leakage of the cylinder, new leakage points are generated shortly after leakage elimination every time, and the problem cannot be fundamentally solved. On one hand, the on-site environmental sanitation of the leaked coal slurry in the cylinder body is difficult to maintain, the cleaning and transferring work of the waste coal slurry wastes time and labor, and the leaked coal slurry cannot enter the production device again and can only be transferred to a coal bunker as the waste coal slurry to cause production waste. On the other hand, leaked coal slurry enters a large gear, a small gear and a bearing bush of the mill, so that lubrication and heat dissipation are influenced, and great hidden danger is brought to stable operation of equipment.

The traditional cylinder sealing device is simple in structure, only has external sealing, and is poor in sealing effect, after the mill runs for a period of time, the T-shaped bolt is impacted by a mill steel bar, shearing force formed by the impact of the mill steel bar and the wall of the cylinder increases abrasion of the root part of the bolt and the wall of the cylinder, and the situations of slurry leakage of the cylinder and bolt fracture are easy to occur. The sealing device of the rod mill cylinder is improved by analyzing and judging certain defects of the rod mill cylinder and combining with practical production conditions.

Disclosure of Invention

To current technical problem, an object of the utility model is to provide a barrel sealing device for rod mill has improved the sealed effect of rod mill barrel through inside and outside two-stage seal, has reduced the probability that the barrel seals the inefficacy, and fundamentally stops the emergence that the barrel leaked the thick liquid condition.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a barrel sealing device for rod mill, includes rod mill rubber welt, rod mill rubber welt passes through T type bolt fastening, T type bolt passes from section of thick bamboo wall, the clearance embedding blotter between T type bolt and the section of thick bamboo wall, rubber circle, bowl type gland and nut are sheathe in proper order after T type bolt passes section of thick bamboo wall.

Furthermore, the shape of the buffer pad is an O-shaped ring, and the height of the O-shaped ring is equal to the thickness of the cylinder wall.

Furthermore, the nut consists of an upper nut and a lower nut.

Furthermore, the material of blotter and rubber circle is nitrile rubber, the material of T type bolt, nut and bowl type gland is the carbon steel.

Furthermore, the inner diameter of the nut, the inner diameter of the bowl-shaped gland and the inner diameter of the rubber ring are equal to the outer diameter of the T-shaped bolt, and the inner diameter of the buffer cushion is 4mm smaller than the outer diameter of the T-shaped bolt.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1) The device is characterized in that a buffer pad is embedded in a gap between the T-shaped bolt and the cylinder wall of the mill to form internal sealing, so that the gap between the T-shaped bolt and the cylinder wall forms buffer, the shock resistance of the T-shaped bolt is improved, the abrasion of the bolt and the cylinder wall of the mill is reduced, and the leakage of coal slurry from the gap between the bolt and the cylinder wall is effectively prevented;

2) The device has simple structure and lower cost, fundamentally solves the frequent slurry leakage of the cylinder of the rod mill, basically solves the slurry leakage problem of the cylinder after the sealing and reconstruction of the cylinder of the rod mill are completed in this year, eliminates the bottleneck of production operation and ensures the normal operation of the coal mill;

3) The rubber ring and the buffer pad used by the device are made of butyronitrile materials, the actual production requirement can be met, and the T-shaped bolt and the nut used by the device are high-strength bolt and nut, so that the service life and the stability of the sealing device are improved.

Drawings

FIG. 1 is a schematic structural view of a cylinder sealing device for a rod mill in example 1 of the present invention;

in the figure: 1-T-shaped bolt, 2-nut, 3-bowl-shaped gland, 4-rubber ring, 5-buffer pad, 6-cylinder wall and 7-rod mill rubber lining plate.

Detailed Description

Embodiments of the present invention will be described with reference to the accompanying drawings, and it should be understood that the embodiments described herein are merely illustrative and explanatory of the present invention, and are not restrictive of the invention. In addition, if a detailed description of the known art is not necessary to show the features of the present invention, it is omitted.

Example 1

The utility model discloses a barrel sealing device for rod mill's structure is as shown in figure 1, including T type bolt 1, nut 2, bowl type gland 3, rubber circle 4, blotter 5, section of thick bamboo wall 6 and rod mill rubber welt 7, rod mill rubber welt 7 is the high strength carbon steel through the material, specification model is M24X 125's T type bolt 1 is fixed, T type bolt 1 passes from section of thick bamboo wall 6, clearance embedding material between T type bolt 1 and section of thick bamboo wall 6 is butadiene acrylonitrile rubber, specification model is in 20's blotter 5 formation internal seal, blotter 5's shape is O shape circle, O shape circle highly equal the thickness of section of thick bamboo wall 6. The T-shaped bolt 1 penetrates through the cylinder wall 6 and then is sequentially sleeved with the rubber ring 4, the bowl-shaped gland 3 and the nut 2 to be fastened to form outer sealing. The material of rubber circle 4 is butadiene acrylonitrile rubber, and the specification model is in 24, and the material of bowl type gland 3 is the carbon steel, and the specification model is in 24, and the nut 2 is two from top to bottom, and the material is the high strength carbon steel, and the specification model is M24.

The utility model discloses a barrel sealing device for rod mill imbeds the cushion and forms the internal seal in the clearance of T type bolt and mill section of thick bamboo wall, makes T type bolt and section of thick bamboo wall clearance form the buffering and improves T type bolt's shock resistance, reduces bolt and mill section of thick bamboo wall wearing and tearing, prevents effectively that the coal slurry from appearing revealing from bolt and section of thick bamboo wall clearance; the device has simple structure and lower cost, fundamentally solves the problem of frequent slurry leakage of the cylinder of the rod mill, basically solves the problem of slurry leakage of the cylinder after the sealing and reconstruction of the cylinder of the rod mill are completed in this year, eliminates the bottleneck of production operation and ensures the normal operation of the coal mill; the rubber ring and the buffer pad used by the device are made of butyronitrile materials, the actual production requirement can be met, and the T-shaped bolt and the nut used by the device are high-strength bolt and nut, so that the service life and the stability of the sealing device are improved.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or some technical features can be replaced equally. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a barrel sealing device for rod mill which characterized in that: including rod mill rubber welt (7), rod mill rubber welt (7) are fixed through T type bolt (1), T type bolt (1) passes from section of thick bamboo wall (6), clearance embedding blotter (5) between T type bolt (1) and section of thick bamboo wall (6), rubber ring (4), bowl type gland (3) and nut (2) are sheathe in proper order after T type bolt (1) passes section of thick bamboo wall (6).

2. The sealing device for a rod mill cylinder according to claim 1, wherein: the shape of the buffer pad (5) is an O-shaped ring, and the height of the O-shaped ring is equal to the thickness of the cylinder wall (6).

3. The rod mill cylinder sealing device according to claim 1, wherein: the nut (2) consists of an upper nut and a lower nut.

4. The rod mill cylinder sealing device according to claim 1, wherein: the material of blotter (5) and rubber circle (4) is nitrile rubber, the material of T type bolt (1), nut (2) and bowl type gland (3) is the carbon steel.

5. The rod mill cylinder sealing device according to claim 1, wherein: the inner diameter of the nut (2), the inner diameter of the bowl-shaped gland (3) and the inner diameter of the rubber ring (4) are equal to the outer diameter of the T-shaped bolt (1), and the inner diameter of the buffer cushion (5) is 4mm smaller than the outer diameter of the T-shaped bolt (1).