Drying and cooling system for production of cured powdery feed

Abstract

The invention provides a drying and cooling system for production of cured powdery feed. A cooling tank of a cooler is divided into multiple layers, a turning plate type discharge mechanism as well asan upper material level device and a lower material level device for controlling material layer height is arranged independently on each tank layer, and an independent compressed air blowing system is arranged on each tank layer. The drying and cooling system is provided with a cooling air inlet pipe and a drying air inlet pipe, and steam heat exchangers and automatic doors capable of controllingtemperature and air volume are mounted on the pipes respectively. Compared with the conventional counter-flow type pellet feed cooler, the drying and cooling system has the advantages that penetrating power of cooling air is strong, the cooling air can be contacted uniformly with the powdery feed, and the cooling efficiency is increased greatly; the powdery feed on each layer can play a filter role, so that powder return rate is reduced; the system has integrated cooling and drying function and is applicable to all weather conditions.

Description

Technical field: [0001] The invention relates to feed processing equipment, in particular to a drying and cooling system suitable for producing mature powder feed. Background technique: [0002] The cured powder feed is the feed obtained by quantitatively feeding the powder feed mixed with ingredients into a high-efficiency steam conditioner for maturation. Due to the high temperature and heat treatment of the mature powder feed, the bacteria content of the feed is low, the harmful factors are inactivated and passivated more thoroughly, and the degree of starch gelatinization is good, which greatly improves the safety of the feed and the digestion and absorption of it by livestock and poultry. It eliminates the defects of high bacterial content, easy grading and low digestion and absorption rate of raw and dry powder, and has good full price, safety, energy saving and economy, and can replace some pellet feeds. [0003] In order to fully inactivate Salmonella, Escherichia c...

AI Technical Summary

Problems solved by technology

[0005] ①Powdered feed has small particles, low porosity, poor airflow penetration, and large wind resistance of the material layer with the same thickness;

[0006] ② Due to the small particle size and low suspension speed, the same cooling wind speed will easily take away more micro-powder material, resulting in product loss or high powder return rate;

The counterflow cooler designed for the production of ordinary pellets has only one layer of cooling box. When it is used for the production of mature powder feed, there are problems of high wind resistance and poor cooling effect.

[0011] In addition, the above-mentioned coolers in the prior art only have cooling air, and no drying air enters, which cannot meet the requirements of drying and cooling of high-moisture mature powder materials.

Moreover, the airflow discharged from the cooler has a high powder content, which is not suitable for drying and cooling mature powder feed

[0012] In addition, when changing varieties or shutting down, it is more troublesome to clean the box, and it is easy to cross-contaminate

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