Air cooling device for bearing bush of ball mill

Abstract

The utility model discloses a ball mill bearing bush air cooling device which comprises a transmission connecting pipe, a sealing shell is arranged on the outer side of the transmission connecting pipe, a hollow shaft is arranged on the left side of the transmission connecting pipe, a spiral sleeve is arranged on the inner side of the hollow shaft, and a plurality of air inlet pipes are arranged on the outer side of the transmission connecting pipe. One end of the air inlet pipe is fixedly connected with the hollow shaft, the other end of the air inlet pipe penetrates through the outer side of the transmission connecting pipe, a mill barrel is arranged on the left side of the spiral sleeve, a plurality of air outlet pipes are arranged at the end, close to the mill barrel, of the spiral sleeve, and air outlets are formed in the outer sides of the air outlet pipes. By arranging the transmission connecting pipe, the air inlet pipe, the air outlet pipe, the spiral sleeve, the air outlet pipe and the air outlet, natural cold air can conveniently conduct heat exchange on the bearing bush on the outer side of the hollow shaft, the phenomenon that a mill frequently jumps and stops due to the high clinker temperature of the bearing bush of the mill is effectively avoided, safe operation of equipment is guaranteed, and the failure rate of the equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ball mills, in particular to an air cooling device for a bearing bush of a ball mill. Background Art

[0002] Ball mill bearings, also known as "shaft bushings", are important parts of the ball mill sliding bearing that are in contact with the rotating shaft. Bearings play a vital role in ball mills. Their main function is to carry the force from the journal and ensure the stability of the oil film to maintain the smooth operation of the bearing and reduce friction.

[0003] When using cement ball mill in summer, the ball mill bearing is too hot to be cooled by cooling water and lubricating oil, which causes the equipment to frequently trip and stop. This phenomenon will not only affect the service life of the equipment, increase costs, but also increase the workload. Utility Model Content

[0004] In order to overcome the disadvantages of the prior art that the bearing temperature of the ball mill is high and affects the use of the ball mill, one of the purposes of the utility model is to provide an air cooling device for the bearing of the ball mill.

[0005] One of the purposes of the utility model is achieved by adopting the following technical scheme: a ball mill bearing air cooling device comprises a transmission connecting pipe: a sealing shell is arranged on the outside of the transmission connecting pipe, a hollow shaft is arranged on the left side of the transmission connecting pipe, a spiral sleeve is arranged on the inner side of the hollow shaft, a plurality of air inlet pipes are arranged on the outside of the transmission connecting pipe, one end of the air inlet pipe is fixedly connected to the hollow shaft, the other end of the air inlet pipe passes through the outside of the transmission connecting pipe, a mill cylinder is arranged on the left side of the spiral sleeve, a plurality of air outlet pipes are arranged on one end of the spiral sleeve close to the mill cylinder, and an air outlet is arranged on the outside of the air outlet pipe.

[0006] According to the ball mill bearing air cooling device, the number of the air outlet pipe and the number of the air inlet pipe are both six.

[0007] According to the ball mill bearing air cooling device, a circular hole adapted to the air inlet pipe is arranged on the outer side of the transmission connecting pipe, and a sealing block is arranged between the air inlet pipe and the circular hole.

[0008] According to the ball mill bearing air cooling device, the sealing block is made of rubber material.

[0009] According to the ball mill bearing air cooling device, a circular hole adapted to the air outlet pipe is provided on the outer side of the spiral sleeve.

[0010] Beneficial effects:

[0011] By arranging the transmission connecting pipe, air inlet pipe, air outlet pipe, spiral sleeve, air outlet pipe and air outlet, it is convenient for natural cold air to exchange heat with the bearing on the outside of the hollow shaft, effectively solving the problem of frequent tripping and stopping of the mill due to the high clinker temperature, ensuring the safe operation of the equipment and reducing the equipment failure rate.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 This is a schematic diagram of the structure of the ball mill bearing air cooling device of the utility model;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0016] Legend:

[0017] 1. Transmission pipe; 2. Hollow shaft; 3. Mill cylinder; 4. Air outlet pipe; 5. Air outlet; 6. Spiral sleeve; 7. Air inlet pipe; 8. Sealing block; 9. Sealing shell. DETAILED DESCRIPTION

[0018] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0019] Reference Figure 1-2The ball mill bearing air cooling device comprises a transmission pipe 1: a sealing shell 9 is arranged on the outside of the transmission pipe 1, a hollow shaft 2 is arranged on the left side of the transmission pipe 1, a spiral sleeve 6 is arranged on the inner side of the hollow shaft 2, a plurality of air inlet pipes 7 are arranged on the outside of the transmission pipe 1, one end of the air inlet pipe 7 is fixedly connected with the hollow shaft 2, and the other end of the air inlet pipe 7 passes through the outside of the transmission pipe 1, a mill cylinder 3 is arranged on the left side of the spiral sleeve 6, a plurality of air outlet pipes 4 are arranged on the end of the spiral sleeve 6 close to the mill cylinder 3, an air outlet 5 is arranged on the outside of the air outlet pipe 4, and the number of the air outlet pipe 4 and the air inlet pipe 7 are both set to six, the mill When the machine is running, natural cold air enters the spiral sleeve 6 (the filling inside the spiral sleeve 6 needs to be removed in advance) through the air inlet pipe 7 for cooling through the negative pressure inside the mill. After the cold air passes through the spiral sleeve 6, it enters the mill through the air outlet 4 near one end of the mill cylinder 3 through the spiral sleeve 6 (the air outlet pipe 4 and the air inlet pipe 7 are both 80mm diameter steel pipes, and the outside of the air pipe is treated with wear resistance to prevent material wear. One end of the air outlet pipe 4 is welded to the other end of the spiral sleeve 6, and the other end is collected at the air outlet 5. The air outlet 5 is open near the mill cylinder 3, so that the cold air can enter the mill due to the negative pressure) to form a cycle. The function of this device is to cool the hollow shaft 2 with cold air, and the other is to isolate the heat conduction of the hot air and materials in the mill to the hollow shaft 2, so as to achieve the effect of reducing the bearing temperature. The good effect has been verified by use. The bearing temperature of the mill bearing has been reduced by about 10 degrees, ensuring the normal operation of the equipment.

[0020] A circular hole matching with the air inlet pipe 7 is arranged on the outside of the transmission pipe 1, and a sealing block 8 is arranged between the air inlet pipe 7 and the circular hole. The sealing block 8 is made of rubber material. A circular hole matching with the air outlet pipe 4 is opened on the outside of the spiral sleeve 6 to prevent cold air from directly entering the mill.

[0021] Working principle: When in use, natural cold air enters the spiral sleeve 6 through the air inlet pipe 7 for cooling through the negative pressure inside the mill. After passing through the spiral sleeve 6, the cold air enters the mill through the air outlet 5 through the air outlet pipe 4 at one end of the spiral sleeve 6 close to the mill barrel 3, thus forming a cycle. The cold air cools the hollow shaft 2 and isolates the heat conduction from the hot air inside the mill and the material to the hollow shaft 2, thereby achieving the effect of reducing the tile temperature and ensuring the normal operation of the equipment.

[0022] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. The air cooling device for the bearing of a ball mill is characterized by: The invention comprises a transmission pipe (1): a sealing shell (9) is arranged on the outer side of the transmission pipe (1); a hollow shaft (2) is arranged on the left side of the transmission pipe (1); a spiral sleeve (6) is arranged on the inner side of the hollow shaft (2); a plurality of air inlet pipes (7) are arranged on the outer side of the transmission pipe (1); one end of the air inlet pipe (7) is fixedly connected to the hollow shaft (2); the other end of the air inlet pipe (7) passes through the outer side of the transmission pipe (1); a mill cylinder (3) is arranged on the left side of the spiral sleeve (6); a plurality of air outlet pipes (4) are arranged on the end of the spiral sleeve (6) close to the mill cylinder (3); and an air outlet (5) is arranged on the outer side of the air outlet pipe (4).

2. The ball mill bearing air cooling device according to claim 1, characterized in that: The number of the air outlet pipes (4) and the number of the air inlet pipes (7) are both six.

3. The ball mill bearing air cooling device according to claim 1, characterized in that: A circular hole adapted to the air inlet pipe (7) is arranged on the outer side of the transmission pipe (1), and a sealing block (8) is arranged between the air inlet pipe (7) and the circular hole.

4. The ball mill bearing air cooling device according to claim 3, characterized in that: The sealing block (8) is made of rubber material.

5. The ball mill bearing air cooling device according to claim 1, characterized in that: The outer side of the spiral sleeve (6) is provided with a circular hole adapted to fit the air outlet pipe (4).

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