Double cone rotary vacuum drying method

Drying treatment of double cone rotary vacuum dryer:

1. The material is placed in a vacuum drying oven to evacuate the gas in order to remove the gas components that can be removed from the material. If the workpiece is heated first, the gas expands when heated. Due to the excellent sealing of the vacuum box, the enormous pressure generated by the expanding gas may cause the observation window tempered glass to burst. This is a potential danger. This danger can be avoided by following the procedure of first vacuuming and then heating up the heating.

2. If the heating air is pumped out by the vacuum heating and vacuuming process, the heat will be brought to the vacuum pump, which will cause the vacuum pump to rise too high, which may reduce the efficiency of the vacuum pump.

3. The heated gas is directed to the vacuum pressure gauge, and the vacuum pressure gauge will produce a temperature rise. If the temperature rise exceeds the operating temperature range specified by the vacuum gauge, the vacuum gauge may cause an indication error.

Some problems should be noted in the selection of double cone rotary vacuum dryer:

1) The viscosity of the material of the double cone rotary vacuum dryer varies with the moisture content. The viscosity can make the material agglomerate into pieces and adhere to the wall of the cylinder. After drying, it tends to adhere to the dust collector and the pipe wall. Pneumatic vibration and crushing devices can be used.

2) Allowable temperature of the material. The allowable temperature is the high temperature at which the material can withstand. Exceeding this temperature will result in a change in material potency, decomposition or discoloration.

3) Bulk density of material The mass of material per unit volume is called the bulk density. Since the material is a mixture of the dry material and the moisture, the dry material tends to be a granular, powdery or solid material, and the gap between the dry material particles varies with the moisture content in the material. The bulk density of the raw wet material and the drying process are very different. Care should be taken when selecting a double cone rotary vacuum dryer.

4) When stacking granular or powdery materials at the slip angle of the material, when the angle between the inclined surface of the material pile and the bottom surface increases to a certain angle, the side material will slide down. The angle between the slope of the material falling off and the bottom surface is called the slip angle of the material. The slip angle is related to material composition, moisture content, particle size and viscosity. When selecting a double cone rotary vacuum dryer, you can select the angle of the cone by referring to the slip angle of the material.