Dog food feed production line's requirements for crushing fineness

In the production process of dog food, the expansion process is one of the most important parts. Because dog food is composed of diverse raw materials and different shapes, in order to save energy consumption and increase production capacity, the wet twin-screw expansion technology has become more and more important. More and more adoption. The pre-cooking effect and puffing effect of dog food are simultaneously affected by the fineness of raw material crushing. Generally speaking, the most scientific fineness of raw material crushing for dog food is to use a gong bottom screen with a diameter of 1.2~2.0mm, and the mesh number is required to be 16 meshes. The aperture of 1.18mm, and the content on the sieve should be less than 9%. However, in order to meet the needs of market consumers, the finest sieve aperture is controlled between 0.8~1.2mm and 18 mesh to 20 mesh. Dog food is subject to special requirements for shelf life. The moisture of the pellets obtained by extrusion is generally about 18% to 25%. Therefore, the drying and dehydration process must be carried out after extrusion to ensure the quality of the dog food.