Preparation and inspection of the superfine grinder before use

Jet mills use high-speed airflow to perform ultra-fine grinding of materials. At present, there are five types in the industry, which can be divided into horizontal disc (flat) jet mills, circulating tube jet mills, target jet mills, reverse jet mills and fluidized bed jet mill. The ultra-fine grinder uses air separation, heavy pressure grinding, and shearing to achieve ultra-fine grinding of dry materials. It is composed of cylindrical grinding chamber, grinding wheel, grinding rail, fan, material collection system and so on.

The inspection items before preparation and use are as follows:

1.   Check the grinder and grading system to check whether there are metal objects and debris in the grinding room;

2.  Check whether there are metal objects and sundries in the feeding hopper and feeding screw of the superfine grinder;

3.  Check whether the ultra-fine grinder tightens the fasteners;

4.  Whether the elasticity of the transmission belt of the ultra-fine grinder is moderate, and whether the protective cover has been installed;

5.  Check the collision of the transmission parts, if there is any abnormality, analyze the reason and eliminate it in time;

6.  Turn the transmission parts to see if there is any abnormality, then move the parts to check whether the operation direction is correct;

7.  Run the ultra-micro grinding machine without load for 20-30 minutes, and observe the working current, temperature and vibration: the temperature rise of the spindle bearing should not exceed 35℃, and the highest target temperature should not exceed 70℃ (in different environments, the temperature is generally not more than 40 ℃); The vibration amplitude of machinery and equipment should not be too large. It can be put into production after normal no-load operation;

8.  The superfine grinding machine should properly open the upper and lower air doors of the gravity dust collector room.