Foods and beverages: apparatus – Cooking – With stirring
Patent
1980-08-11
1982-11-30
Jenkins, Robert W.
Foods and beverages: apparatus
Cooking
With stirring
100 93S, 100117, 366 88, 366 89, 366323, 366146, A47J 2700
Patent
active
043610811
ABSTRACT:
An extruder for oilseed products, grain mash, and other materials includes an elongated screw rotatably disposed in a bore formed in a tubular housing. The screw is characterized by a plurality of separate threads of progressively decreasing pitch toward a discharge end of the screw. The separate threads are spaced apart and thread portions of constant pitch include gaps to provide clearance for radially inwardly projecting pins disposed in the housing and projecting into the material flow path for mixing the material to prevent solidification thereof and clogging of the extruder. The screw shaft includes spaced apart annular collars which comprise backflow dams for the material being conveyed through the extruder. The tubular extruder housing is of modular construction and is adapted to be used with various combinations of tubular inserts and a plurality of stacked annular rings forming the extruder bore. The rings are provided with radially extending channels for draining liquid being extruded from the material out of the bore. The extruder is provided with spaced apart electrical resistence heating elements disposed on the housing for heating the material being extruded. Temperature sensors disposed in the mixing pins sense the temperature of the material in the extruder flow path.
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