CN211937199U

CN211937199U - Ball mill feeding elbow pipe

Info

Publication number: CN211937199U
Application number: CN202020090398.3U
Authority: CN
Inventors: 付崇春; 高延群; 武志鹏
Original assignee: Ansteel Mining Co Ltd
Current assignee: Ansteel Mining Co Ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-11-17
Anticipated expiration: 2030-01-16

Abstract

The utility model aims at solving the problem of the feeding elbow of the existing ball mill, and provides a feeding elbow of a ball mill. The structure of the ball mill feeding elbow pipe is as follows: the upper end of the elbow is provided with a flange connected with a ball mill ball adding machine, the inner wall of the outward bending position of the elbow is provided with a plurality of grooves, the bottom of each groove is paved with a layer of steel balls, and each steel ball of each groove is provided with a steel ball. The utility model discloses an elbow pipe utilizes rolling friction to replace sliding friction, sets up the recess at the position (bend department) that the inlet pipe is the easiest to wear and tear promptly, places little steel ball and the steel ball that matches in the recess, and the steel ball highly is higher than the return bend inner wall, and mixture (ball and iron ore) rolls relatively through little steel ball and steel ball under the action of gravity and realizes that the mixture flows, has improved the wearability of return bend.

Description

Ball mill feeding elbow pipe

Technical Field

The utility model belongs to the technical field of ball mill feed conveying equipment, in particular to ball mill feed return bend.

Background

The ball mill feeding bent pipe is a common spare part of the ball mill, and steel balls and ores enter the inner part of a ball mill cylinder through the bent pipe to be ground and thrown into pieces. The bent pipe is continuously impacted and rubbed, and the bent pipe is always scrapped due to the grinding leakage at the corner of the bent pipe.

The elbow is typically manufactured from ZGMn13 or composite material (inner hardened tungsten carbide layer). The hardness of the ZGMn13 material in the process hardening reaches about HB 340; the composite material has very good wear resistance but poor impact resistance, and the wear-resistant layer is cracked under the impact of the steel ball, so that the cost is high.

Therefore, further development of the feeder elbow is necessary to improve the wear resistance thereof.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of the feeding elbow of the existing ball mill, and provides a feeding elbow of a ball mill. The utility model discloses an elbow pipe utilizes rolling friction to replace sliding friction, sets up the recess at the position (bend department) that the inlet pipe is the easiest to wear and tear promptly, places little steel ball and the steel ball that matches in the recess, and the steel ball highly is higher than the return bend inner wall, and mixture (ball and iron ore) rolls relatively through little steel ball and steel ball under the action of gravity and realizes that the mixture flows, has improved the wearability of return bend.

A flange connected with a ball mill ball adding machine is arranged at the upper end of the elbow, a plurality of grooves are formed in the inner wall of the outward bending position of the elbow, a layer of steel balls are laid at the bottom of each groove, and one steel ball is mounted on each steel ball of each groove.

Further, the length and the width of the inner diameter of the top end of the groove of the feeding bent pipe are 1-3 mm larger than the diameter of the steel ball;

further, in the feeding bent pipe, the side wall of the groove is vertically arranged or is inclined inwards from top to bottom;

furthermore, the diameter of the steel ball of the feeding bent pipe is more than or equal to 22 mm;

further, in the feeding bent pipe, the top end of the steel ball is 5-10 mm higher than the groove;

further, the diameter of the steel ball of the feeding bent pipe is 1-2 mm;

furthermore, the radian of the feeding bent pipe is 38-45 degrees.

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

the utility model discloses a feed return bend is difficult for wearing and tearing, and the maintenance is conveniently dismantled, improves work efficiency, reduces manufacturing cost, environmental protection and energy saving.

Drawings

FIG. 1, a cross-sectional view of the feed elbow in the axial direction of example 1;

FIG. 2 is a cross-sectional view of the feeder bend taken along direction AA in example 1;

fig. 3 and 2 are partially enlarged views at B.

The device comprises a feeding bent pipe 1, a feeding bent pipe 2, a flange 3, a groove 4, a steel ball 5 and a steel ball.

Detailed Description

Examples

The utility model provides a ball mill feed return bend 1, the return bend upper end is equipped with and adds flange 2 that the ball mill is connected with the ball mill position, be provided with several recess 3 on the inside wall of the outside bending position of return bend, one deck steel ball 4 is laid to every recess 3's bottom, the diameter of steel ball 4 is 2mm and installs a 60 mm's steel ball 5 on the steel ball of every recess, the internal diameter length and the width on recess top all are than the 2mm that the diameter of steel ball is big, two relative lateral walls of recess set up other two relative lateral walls for vertical inside tilt settings from top to bottom, the top of steel ball is higher than recess 7mm, the radian of return bend 1 is 43.

In actual use, the diameter of the elbow can be selected according to the diameter of the ball mill, and then the specification of the groove and the size of the steel ball are determined.

When the device is used, the mixture (grinding balls and iron ore) flows through the bent pipe under the action of gravity, and the small steel balls and the steel balls roll relatively, so that the hard friction of the mixture on the pipe wall can be reduced. When in maintenance, the bent pipe is detached, the steel balls and the steel balls which are seriously abraded are replaced by new ones and then are installed back into the groove, and then the bent pipe is installed on the ball mill for continuous use.

Claims

1. The feeding elbow pipe for the ball mill is characterized in that a flange connected with a ball mill ball adding machine is arranged at the upper end of the elbow pipe, a plurality of grooves are formed in the inner wall of the outwards bent position of the elbow pipe, a layer of steel balls are laid at the bottom of each groove, and one steel ball is mounted on each steel ball of each groove.

2. A feed elbow according to claim 1, wherein the groove tip has an internal diameter of length and width which are both 1 to 3mm greater than the diameter of the steel ball.

3. A feed elbow according to claim 1, wherein the side walls of the recess are vertically or inwardly inclined from above.

4. A feed elbow according to claim 1, characterised in that the steel balls have a diameter of 22mm or more.

5. A feed elbow according to claim 1 wherein the top end of the ball is 5-10 mm above the groove.

6. A feed elbow according to claim 1, characterised in that the steel balls have a diameter of 1-2 mm.

7. A feed elbow according to claim 1, characterised in that the elbow has an arc of 38 to 45 °.