It is basically used for the processing of pet food, mainly cats and dogs, and for feeding ornamental fish. It is the most widely used machinery in the pet food industry.

 The extruder is mainly composed of a feeding bin, a feeder, a conditioner, principal machine of cooking extruder and pipeline support.

Firstly, the materials prepared and pulverized enter the bridge-breaking feeding bin to be processed. When working, the feeder continuously feeds material in bridge-breaking feeding bin to the double-shaft differential-speed conditioner for conditioning, at the same time, adds even, continuous and metered steam, water and other liquids into the conditioner. Material being conditioned for a certain period enters feeding section of theextruding machine assembly for extruding, material is conveyed from the feeding section.

The feeding section is mainly used to convey material to kneading section and primarily compress the material; in the kneading section, material will be gradually ripened or dissolved through strong stirring, mixing and cutting; pressure and temperature will rise gradually after entering the final ripening section.

The material will be ripened further, starch will be gelatinized further, fat and protein will be modified and homogenized to form a non-crystal texture; finally, material will be extruded and cut into shapes trough the discharging assembly.