SCREW-TYPE EXTRUDER FOR OBTAINING OF PRODUCTS WITH FILLER Russian patent published in 2006 - IPC A23P1/12 A21C9/06 B29C47/78 

FIELD: production of extruded food products in various branches of food-processing industry, such as corn chips, combined feeds etc.

SUBSTANCE: screw-type extruder has steamer and openings provided under steamer within extruder casing and adapted for supplying of steam into working chamber, said openings being oriented at an angle to axis of steamer and having different diameters. Diameters of openings are reducing from leading part of steaming and mixing zone in the course of advancement of product, while distance between openings is increasing. Screw shaft coil has portion arranged in steaming and mixing zone and consists of individual blades positioned circumferentially and at an angle to shaft axis. Product guide is made in the form of device adapted for feeding of filler and simultaneously for creating air pad between filler and enclosure of product. Said device is composed of two concentrically arranged cylindrical pipes, each of said pipes being divided into two parts arranged at an angle of 90 deg with respect to one another and interconnected through threaded joint. One of said parts is in upper portion of forming head and other part is axially aligned with forming head. Rings are inserted into space between pipes axially aligned with forming head, at their end side, and into forming channel for preventing tubes from radial displacement.

EFFECT: wider range of products obtained, improved quality of product, and reduced time for processing of basic material.

6 dwg