Spiral material mixing pneumatic dryer

Abstract

The invention discloses a spiral material mixing pneumatic dryer. The spiral material mixing pneumatic dryer is characterized by comprising a magnetic coupler, a vacuumizing and nitrogen air outlet, a seal device, an upper cylinder, a screen net, a sampling device, a spiral hollow shaft, a middle cylinder, a pressure sensor, a bottom frame, a lower cylinder, a conical discharging plate, a flower-shaped supporting plate, an air cylinder, a discharging conical cylinder, a discharging cylinder, a spiral conveyor, a feeding opening, a hot nitrogen inlet and an air bearing; the magnetic coupler comprises a first magnet, a partition plate and a second magnet; according to the dryer, the manner that three methods of vacuum drying, hot air convection drying and thermal radiation conduction drying are combined is adopted to dry powder; under the stirring effect of the spiral hollow shaft, hot air makes contact with the powder, and the drying efficiency is high; hot nitrogen flowing through the interior of the spiral hollow shaft enables the temperature of the spiral hollow shaft to rise, the high-temperature spiral hollow shaft carries out radiation heat transfer on the powder, and the powder is uniformly dried.

Description

technical field [0001] The invention relates to the field of airflow drying, in particular to a spiral agitation airflow dryer. Background technique [0002] With the development of society, the application of lithium-ion batteries is becoming more and more extensive. In the production process of lithium-ion batteries, moisture control is particularly important, and the dryness of lithium-ion battery raw materials directly affects the performance and consistency of lithium-ion batteries. Due to the small particle size of lithium-ion battery raw materials, it is easy to stick together, and the powder is not dried uniformly due to powder agglomeration during the drying process. [0003] Airflow drying, also known as instant drying, is a continuous and efficient solid fluidized drying method. It sends the wet material in the form of mud, powder or block into the hot air flow and flows with it. In the process of convective heat and mass transfer, the high-speed hot air flow di...

AI Technical Summary

Problems solved by technology

For example, the application number 201320588533.7 discloses a large-grain viscous lignite drying and grading airflow dryer. The stirring mechanism is installed inside the cylinder, which solves the sticking phenomenon of the powder, but does not consider the cleaning of the powder in the dryer.

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