Crushing first and then batching processing technology

The processing technology of first crushing and then batching is to crush the raw materials that need to be crushed into powder one by one through the crushing equipment, and then enter the respective intermediate batching bins according to the proportion of the pet food formula, measure these powdery raw materials one by one, and then enter the mixing equipment Thoroughly mix it and make it into powder to mix with pet food. If it needs to be shaped, it will enter the extrusion system and be processed into granules.

The characteristics of the process are: this process adopts computer-controlled production, and the batching and mixing process and pre-mixing process must be carried out according to the formula and production procedures; it is mostly used for large-scale production, high mixing ratio requirements, high mixing uniformity, and many types of raw materials. pet food.

Batching first and then crushing processing technology

Mixing first and then crushing processing technology First, various raw materials (excluding vitamins and trace elements) are mixed together according to the ratio of the pet food formula, and then crushed, and the crushed powder enters the mixing equipment for batching Mixing or continuous mixing, and add diluted vitamins, trace elements and other additives at the beginning of mixing, and after mixing evenly, it will be powdered compound pet food.

If it is necessary to compress the powdered pet food into granular pet food, the powdered pet food is steam-conditioned, heated to soften it, and then enters the extruder for puffing, and then it is dried, sprayed, and cooled. Puffed granular pet food.

The characteristics of the process are: the raw material bin is also a batching bin, which reduces investment; no more bins are needed, and it can adapt to changes in material varieties; the working condition of the pulverizer will directly affect the work of the whole plant.

Analysis of the advantages and disadvantages of the two processes

1. Crushing first and then batching process

Advantages: When crushing a single variety of pet food, the grinder can give full play to its crushing efficiency according to the physical characteristics of pet food, reduce power consumption, increase output, and reduce production costs. The screen or air volume of the grinder can also be adjusted according to different particle size requirements. Selection and exchange are carried out so that the particle size quality of the powdered pet food can be achieved to the best degree.

Disadvantages: more batching bins, material inlet and outlet control valves and arch breaking devices are required, so the production process is complicated and the construction investment is large; when there are more than 3 types of pet food to be crushed, multiple pulverizers must be used. Otherwise, the types of pulverizers will be changed frequently, the operation will be frequent, the load will change greatly, the production efficiency will be low, and the power consumption will be large.

2. Batching first and then crushing process

Advantages: simple process flow, compact structure, less investment, power saving, the raw material warehouse is the batching bin, thus eliminating the need for intermediate batching bins and intermediate control equipment.

Disadvantages: Part of the pulverized pet food needs to be pulverized, resulting in too fine particles, which affects the output of the pulverizer and wastes electric energy.