Wear bushing of extruder

Abstract

The invention discloses a wear bushing of an extruder. The wear bushing of the extruder comprises an outer ring and an inner ring and is characterized in that the bushing inner ring is cylindrical or conical, and the cylindrical or conical inner ring is smooth or a plurality of grooves capable of reducing pressure for a discharging end are distributed on the circumference of the inner ring. The wear bushing of the extruder has the advantages of reasonable design, simple structure, high extruding efficiency, stable equipment operation, high durability of the bushing, low production cost, remarkable production effect and the like.

Description

technical field [0001] The invention relates to a food and feed puffing machine, in particular to a wear-resistant bushing of the puffing machine. Background technique [0002] With the development of the food industry and feed industry and the improvement of people's living standards, extruders have been widely used in the production of various high-grade food and high-grade livestock and poultry feed. Poultry digestion and absorption, easy storage and other significant advantages, especially for the raw material puffing processing with a starch content of 40%, it is generally required that the raw material after puffing processing is a high-mature product, by adding the high-mature raw material as the main formula component to food or feed , or directly use the highly mature raw material as food or feed, such food or feed is conducive to improving the nutritional content and finally increasing the absorption rate, and improving its edible taste. The puffing process is to ...

AI Technical Summary

Problems solved by technology

When the pasty material is ejected from the die hole, under the action of strong pressure difference, the material is puffed, dehydrated, and cooled. The puffed product has a loose, porous, and crisp structure, and has good palatability and flavor. The degree of maturity of the material during extrusion and puffing is different, and the degree of maturity is related to the pressure and temperature in the extrusion cavity. Therefore, the gap between the screw and the bushing of the extruder has a great influence on the quality of material puffing. It plays a vital role. At present, the inner and outer rings of the bushing on the market are smooth, so that the gap between the bushing and the screw is large in the process of the material from the feed end to the discharge end. The use of the bushing short life

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