Drying system having continuously connected close spiral conveye

Details Drying system having continuously connected close spiral conveye Drying system having continuously connected close spiral conveye

1995-07-10

1996-11-05

Look, Edward K.

Drying and gas or vapor contact with solids

Apparatus

Stationary receptacle or tube with agitator or conveyor

34180, 34183, F26B 1104

Patent

active

055705162

ABSTRACT:
Disclosed is a drying system having continuously connected close spiral conveyers mainly including a material mixer, a pump, a plurality of spiral conveyers connected end-to-end and zigzagging their way from top to bottom, a plurality of steam chambers around the mixer and the spiral conveyers, a container, a water tank, and a plurality of hoppers for receiving dried material. The material mixer has a stirring blade for stirring and loosening the material to be dried. The pump is connected to a bottom end of the mixer to suck the loosened material from the mixer and send it to the spiral conveyers to thereby further loosen and transport the material. Steam chambers surrounding the spiral conveyers are filled with hot steam to indirectly heat the material passing through the spiral conveyers. Automatic control valves are separately provided at a lower end of each spiral conveyer and are connected to a vacuum pump for sucking any moisture out of the spiral conveyers. The dried material is sent to the hoppers connected to a lower outlet of the lowest spiral conveyer for final packing and sealing into a container.

REFERENCES:
patent: 430652 (1890-06-01), Jarrett
patent: 3837271 (1974-09-01), Shore et al.
patent: 4209911 (1980-07-01), Weber
patent: 4872949 (1989-10-01), Wilwerding
patent: 4912301 (1990-03-01), McKinney et al.
patent: 5321900 (1994-07-01), Meyer

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