An anti-clogging airflow dryer and wind speed raising mechanism

Abstract

The invention is an anti-clogging air flow dryer and a wind speed raising mechanism. The top of the return tank and the top of the air flow tank are closed and fixed with the side wall of the air intake pipe, the lower part of the return tank is connected with the outer tank, and the lower part of the outer tank is fixedly installed Conical tank, the large diameter of the upper end of the conical tank is welded to the lower end of the outer tank; the small diameter of the lower end of the conical tank is welded together with the outer wall of the air flow tank, and the side wall of the air flow tank above the two welding positions is provided with densely distributed The radial through holes ensure the communication state between the inside of the airflow tank and the conical tank; the air inlet pipe extends into the airflow tank from the top of the outer tank, and a wind speed raising mechanism is fixedly installed at the lower end of the air inlet pipe, and the outlet of the wind speed raising mechanism The tuyere is close to the bottom of the airflow tank, and the bottom of the airflow tank is provided with a sealed discharge mechanism; on the airflow tank located at the upper part of the radial through hole and below the return tank, a hopper is communicated outward. This dryer is a screen-free type, which has the advantages of no clogging, high energy utilization rate, and low installation height.

Description

technical field [0001] The invention relates to the technical field of powder drying, in particular to an anti-clogging airflow dryer. Background technique [0002] Airflow drying is a high-efficiency solid fluidized drying method. After the airflow is heated, the powder is blown and floated. During the blowing and floatation process, full contact and heat exchange are carried out to vaporize the moisture in the powder, thereby obtaining a dry product. Powder. The purpose of drying is to remove the moisture or solvent in the powder. As far as battery materials are concerned, the purpose is to dry the powder to improve the quality of the battery. Airflow drying is widely used in industrial production, and has the advantages of high drying strength, short drying time, large processing capacity, simple equipment, and convenient operation. However, there are also some defects in the airflow dryer. For example, the invention patent with the application number 201310313792.3 dis...

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Problems solved by technology

However, there are also some defects in the airflow dryer. For example, the invention patent with the application number 201310313792.3 discloses a long-tube airflow dryer. Because the drying pipe is long, it is inconvenient for building construction and operation, and a high-power fan is required. Blowing powder, large energy consumption

The invention patent with the application number 201710163277.X adopts the form of powder circulation drying to reduce the height of the drying pipe, but the screen for receiving the powder is easy to block, which increases the maintenance cost

The invention patent with the application number 201710288406.8 designs a non-screen anti-clogging structure. However, the air intake pipe of this structure is blown from bottom to top, and the air flow will easily cause powder to fall into the nitrogen output pipe, causing equipment pollution and increasing the frequency of equipment maintenance.

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