Anti-blocking airflow dryer and wind speed increasing mechanism

Abstract

The invention relates to an anti-blocking airflow dryer and a wind speed increasing mechanism. The top of a return tank and the top of an airflow tank are fixed to the side wall of an air inlet pipe in a sealed mode, the lower portion of the return tank communicates with an outer tank, a conical tank is fixedly installed on the lower portion of the outer tank, and 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 to the outer side wall of the airflow tank, and dense radial through holes are formed in the side wall of the airflow tank above the welding position of the conical tank and the airflow tank, so that the communication state between the interior of the airflow tank and the conical tank is ensured. The air inlet pipe extends into the airflow tank from the top of the outer tank, the wind speed increasing mechanism is fixedly mounted at the lower end of the air inlet pipe, an air outlet of the wind speed increasing mechanism is close to the bottom of the airflow tank, and a sealed discharging mechanism is arranged at the bottom of the airflow tank. A hopper outwards communicates with the airflow tank which is positioned above the radial through holes and below the return tank. The anti-blocking airflow dryer belongs to a screen-free type, and has the advantages of no blockage, high energy utilization rate, low mounting height and the like.

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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