Air-cooled Grinding Roller For Grinding Mill

Summary of contents: The cooling roller of the grinding mill has water-cooled, air-cooled and heat-tube type, air-cooled grinding rolls, the roller body and the shaft diameter are hollow, and the guide hole is processed in the hollow hole wall of the shaft diameter. The guide groove is an axial spiral groove, a inclined groove or a straight groove, and the groove shape may be a triangle, a trapezoid or a circular arc. The cooling roller of the grinding mill has water-cooled, air-cooled and heat-tube type. This paper will briefly introduce the working principle and characteristics of the air-cooled grinding roller.

The air-cooled grinding roller of the grinding mill has a hollow shaft, and a guide groove is formed in the hollow hole wall of the shaft diameter, and the guide groove is an axial spiral groove, a chute or a straight Grooves, etc., the groove shape may be a triangle, a trapezoid or a circular arc.

The method of air-cooling the grinding roller is to use a high-speed airflow and a grinding roller to perform convection heat exchange, thereby taking away the heat generated in the material powder processing, which is a commonly used cooling method, and the high-speed cooling wind enters from the air inlet. The mill performs convective heat transfer with a higher temperature grinding roller, removes heat, and the heated airflow exits the mill from the feeder, thereby reducing the temperature of the surface of the roller and the material being ground. Due to the rotation of the grinding roller, the axial guiding groove of the hole wall drives the air to enter from the one end at the guiding groove, and the other end is discharged, and no automatic power is required to realize automatic heat exchange inside the grinding roller shaft, thereby To achieve the purpose of reducing the temperature of the grinding roller.

The grinding roller has the advantages of simple structure, relatively easy processing and long service life, but the heat carried by the air is limited, which is far less than water. If the airflow of the shaft diameter is not smooth, the effect is not satisfactory, so the air-cooling grinding roller reduces the grinding roller. The temperature is not high. In addition, the grinding roller works for a long time. The powder in the grinding mill may enter the diversion trough, block the diversion trough, affect the air flow, and make the air cooling invalid. Therefore, attention should be paid during use.

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