Rake vacuum drying main machine

Abstract

The invention relates to a rake vacuum drying main machine, which comprises a tank body, wherein a main shaft of the main machine is solid, and a plurality of rake tooth components are arranged on the main shaft; each rake tooth component consists of a sleeve shaft and four solid rake teeth which are distributed and fixed on the sleeve shaft uniformly and is connected on the main shaft by a sleeve shaft key; the orientations of the rake teeth of all rake tooth components are the same, so that four channels are formed in the tank body; and a knocking rod is arranged in each channel or the spaced channel. In the rake vacuum drying main machine, materials are knocked continuously inside the tank body of the drying main machine by utilizing the knocking rods to accelerate the crushing of the materials, so that the materials have the large specific surface area, the drying process is accelerated, finished products are uniform in fineness and low in moisture; and the rake vacuum drying mainmachine is suitable for drying lithium iron phosphate materials, and improves the quality and drying efficiency of the products.

Description

technical field [0001] The invention relates to a rake-type vacuum drying host. Background technique [0002] The rake vacuum dryer is a general-purpose drying equipment. The rake vacuum dryer is a device that uses the characteristic that the boiling point of the water in the material decreases under vacuum to dry. The equipment is indirectly heated with a steam jacket, and the water is evaporated by heating and extracted in time. Inside the dryer shell, the rake teeth are driven by the transmission shaft. The end of the rake teeth and the axis are designed to have a certain angle. The transmission shaft rotates in the forward and reverse directions to move the material along the axial direction to facilitate drying and discharging. The Chinese Invention Patent Publication No. 101050916A discloses a rake dryer, which mainly adopts a hollow main shaft to be installed in the inner cylinder of the tank. The two ends of the hollow main shaft are respectively equipped with be...

AI Technical Summary

Problems solved by technology

The rake-type vacuum dryer mentioned above is not suitable for drying lithium iron phosphate materials. This is due to the poor fluidity of lithium iron phosphate suspended materials. When drying, the materials change from liquid to paste to powder, and the material changes greatly. It is sticky, and the working resistance of the rake teeth is very large. For example, the rake rod and the rake teeth are not strong enough, and they are easy to bend and break during the drying process.

Moreover, the current welding between the hollow rake rod and the hollow main shaft causes a large deformation of the main shaft and the rake rod. When the main shaft drives the rake teeth to rotate, the gap between the head of the rake teeth and the inner wall of the tank is uneven. Affect the crushing effect, resulting in uneven product fineness

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