Material graded cooling device for forage production

Abstract

The invention relates to a material graded cooling device for forage production. A screen and a heat exchanger are arranged in a grading shell, a material inlet is formed in the upper end of the grading shell, an air feeding opening is formed in one side of the grading shell, an air inlet is formed in the other side of the grading shell, the air feeding opening and the air inlet are oppositely arranged, the heat exchanger is arranged at the position of the air inlet in the grading shell, an impurity outlet and a material outlet are formed in the lower end of the grading shell, the screen is arranged in the grading shell in an inclined manner, an inner cavity of the grading shell is divided by the screen into a coarse particle chamber and a fine particle chamber, materials dried by a pipe bundle drier are screened according to the particle thickness, impurities such as iron blocks and stone are removed, light and fine powdery materials are directly fed through air, and materials slightly larger in particle enter a pulverizer to be subject to pulverization and then to be fed through air; and meanwhile, cooling energy transition equipment is arranged to cool air for air feeding, the cooled air is used for air feeding of the materials, the material cooling effect and cooling efficiency are improved, and the energy consumption can be effectively reduced.

Description

Technical field [0001] The invention relates to the technical field of equipment for conveying and cooling powder and granular loose materials such as vinasse protein feed, and in particular to a material classification cooling device for feed production. Background technique [0002] DDGS (English name: Distillers Dried Grains with Solubles, Chinese name: Dried Grains with Solubles in Chinese) is a centrifuge to separate the lees into two parts, the filter residue and the filtrate. The filtrate is concentrated by evaporation and dried together with the filter residue. The tube bundle dryer is currently the main drying equipment used in the production of DDGS. Because the material is discharged at a higher temperature after being dried by the tube bundle dryer, particles of different sizes will be produced during the drying process, which usually needs to be dried after the material is dried. The elevator is sent to the cooler for cooling, after cooling, it is sent to the tempora...

AI Technical Summary

Problems solved by technology

After being dried by the tube bundle dryer, the particles of the material discharged are large or bonded at high temperature, and need to be crushed into materials with uniform particle size by using a pulverizer, while materials mixed with hard impurities such as iron blocks and stones will cause wear to the equipment during crushing Even cause failure, reduce the service life of equipment and increase maintenance costs

Moreover, the existing pulverizers pulverize all materials, which contain many materials whose particle size meets the requirements, which causes the pulverizer to do more useless work and cause serious waste of energy.

At the same time, in the process of material transportation, impurities and materials are mixed together. Because the impurities and bonded materials are heavy, it needs to consume high energy for transportation, and there are more impurities, which directly affect the product quality.

In addition, in the high temperature environment in southern my country in summer, the temperature of the material dried by the tube bundle dryer will be higher, and the external ambient temperature also directly affects the temperature of the material, making it difficult to cool the dried material, which consumes more energy and lowers the cooling efficiency. And the effect is not ideal

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