Steel ball coal mill is the main equipment of coal powder preparation system in thermal power station. It is also used in cement industry, metallurgy industry, chemical industry, sugar industry, etc
This machine is cylindrical rotating device, external gear transmission, two compartment, grid type ball mill. The material enters into the first bin of the mill uniformly through the feeding device through the feeding hollow shaft spiral. There is a ladder lining board or corrugated lining board in the bin, and steel balls of different specifications are installed inside. The cylinder rotates to generate centrifugal force, which brings the steel balls to a certain height and then falls down, thus producing a heavy blow and grinding effect on the material. After the material is roughed in the first bin, it enters the second bin through the single compartment board, which is inlaid with flat lining board and contains steel balls to further grind the material. The powder is discharged through the unloading grates to complete the grinding operation. Cement mill has the characteristics of strong adaptability to materials, continuous production, large crushing ratio, easy to adjust the fineness of grinding products. Cement mill can be produced by wet method as well as by wet method. It can also be ground and dried at the same time.
This machine is a horizontal cylindrical rotating device, which is mainly composed of a cylinder, a grinding door, and a liner bolt
The lining plate is used to protect the cylinder, to avoid long-term impact and friction damage to the cylinder, and to adjust the movement state of materials in the mill.
The silo board mainly divides the grinding medium, prevents the axial movement of the medium, prevents too large particles from entering the next silo, makes the material get reasonable grinding, and can also control the filling degree of the material, the flow rate of the material, and the grinding speed of the material in the mill.
(4) main bearing
The mill is supported on the main bearing through hollow shaft, with bearing cover, observation hole (observe the operation of oil supply and central control shaft and bearing bush) and temperature thermometer. The bearings are lubricated by dynamic pressure and static pressure.
The feeding device is to feed the material into the mill smoothly. In general, there are feeding device with slide tube, feeding device with spiral and feeding device with scoop wheel. It is required that the inclination Angle of the slide pipe must be larger than the repose Angle of the material to ensure the smooth flow of the material so that the hollow shaft will not be scoured by the material. Fill concrete between the conical sleeve and the hollow shaft. (6) transmission device
By fast motor, slow motor, slow speed reducer, fast speed reducer.
|
Model |
Φ1.7×2.5 |
Φ2.2×4.4 |
Φ2.4×4.75 |
Φ2.4×4.5+2 |
Φ2.6×5.25+2.25 |
Φ2.8×5+3 |
Φ3.0×6.5+2.5 |
Φ3.2×6.75+2 |
Φ3.4×6+3 |
Φ3.8×7+2.5 |
|
Speed |
24.5 |
22.4 |
20.4 |
20.4 |
19.7 |
18.3 |
18.3 |
16.9 |
17.5 |
16.4 |
|
Capacity |
3-5 |
8-9 |
12-14 |
11-12 |
13-14 |
16-17 |
19-20 |
25-30 |
28-30 |
38-40 |
|
Freed size(mm) |
＜25 |
＜25 |
＜25 |
＜25 |
＜25 |
＜25 |
＜25 |
＜25 |
＜25 |
＜25 |
|
Steel ball loading (t) |
7.5 |
20 |
22 |
22.5 |
28 |
32 |
43 |
50 |
55 |
80 |
|
Gear box |
ZD40 |
ZD60 |
ZD60 |
ZD60 |
ZD70 |
ZD70 |
ZD80 |
JDX560 |
JDX710 |
MBY800 |
|
Motor (kw) |
95 |
250 |
280 |
315 |
400 |
500 |
630 |
710 |
800 |
1250 |
|
Weight(t) |
29 |
46 |
54 |
76 |
98 |
107 |
124 |
148 |
162 |
215 |
