Processing Technology Of Pet Food Production Line

Pet food is the food specially provided for small pet animals. It is a high-grade animal food between human food and traditional animal feed. Its main function is to provide the most basic life guarantee and nutrients needed for production, development and health of all kinds of pets. It has the advantages of comprehensive nutrition, high digestibility, scientific formula, quality standard, convenient feeding and use, and can prevent some diseases.
Pet food processing technology is the combination of feed production technology and food production technology. The production process of pet food can be roughly divided into two types: one is the extrusion process with drying after extrusion as the main line, and the other is the baking process of extrusion baking. The difference between semi-dry and semi-wet products and dry pet food is mainly in the moisture content. Dry pet food mainly depends on the low moisture content to ensure the product's shelf life, while semi-dry and semi-wet products rely on some salts, sugars and other substances to reduce the water activity, and use some bacterial inhibitors to inhibit the growth and reproduction of mold, so as to ensure the product's shelf life. Pet cans are obtained through high-temperature and high-pressure sterilization process.
In addition to canned food, other pet foods are closely related to the extrusion process, and the extrusion technology is basically used in the processing of pet food. The pet food production line uses a twin-screw extruder to produce pet food. The pet food produced is novel in shape, unique in taste, rich in nutrition, and delicate in texture, which is suitable for different pet tastes. The production line can be used to produce pet food such as cats, dogs, birds, foxes, and is an ideal choice for many manufacturers.
The pet food production line includes ingredient system, extrusion system, spraying and cooling system, drying system and packaging system. The pet food production equipment includes mixing machine, screw conveyor, twin screw extruder, air blower, oven, coating line (seasoning cylinder), and cooler.
Factors affecting the extrusion effect of pet feed during processing include:
1. Influence of the model: wet or dry method, specification size, screw length to diameter ratio, screw structure, screw wear, sleeve groove shape, die diameter, material, die hole number, etc.
2. Influence of material properties: density, starch content, moisture, fiber content, etc.
3. Effect of conditioning: feed rate, steam and water addition, steam quality, water temperature, etc.
4. The influence of operation and use: the matching of screw and sleeve, the replacement of formula, the insulation of sleeve, the cooling of screw, the subsequent processing control method, etc.