Smashing separating and drying method for viscous fermented feed

Abstract

The invention relates to a smashing separating and drying method for viscous fermented feed. After the fresh damp viscous fermented feed and dry feed enter a mixing machine to be mixed, the mixture is fed into a smashing rising machine through a feeding device, return feed discharged from a damp feed outlet of an aspirator also enters the smashing rising machine after being mixed with new feed, a rotor of the smashing rising machine hits the return feed and the new feed and throws the return feed and the new feed upward to a drying pipe for going forward and drying at the same time, then the return feed and the new feed enter a feed inlet of the aspirator, meanwhile, hot air enters the air inlet of the aspirator, after being separated by the centrifugal aspirator, the feed which is still damp is discharged from the damp feed outlet of the aspirator to enter the smashing rising machine, the dry feed enters a feed inlet of a feed unloading device, the dry feed sinks to the bottom of the feed unloading device and enters a spiral conveyer, part of the dry feed is fed into a dry feed return pipe, and the rest dry feed is fed into a dry feed pipe; dust enters a dust remover to be separated, and the dry feed at the bottom of the dust remover is discharged into the dry feed pipe. The smashing separating and drying method for the viscous fermented feed is high in production efficiency and capable of keeping activity of the fermented feed.

Description

technical field [0001] The invention relates to a feed drying system, in particular to a crushing, separating and drying method for viscous fermented feed. Background technique [0002] In the prior art, fluidized bed dryers, active drying towers, tubular dryers, combined dryers, etc. are usually used for drying fermented feed. Among them, the fluidized bed dryer uses hot air to pass through the material for drying, and the drying temperature is about 80°C; the tubular dryer uses high-temperature steam in the heat exchange tube as the heat source, and the material outside the tube contacts the tube wall to transfer heat, and the drying temperature is The temperature is about 80°C; the active drying tower uses hot air as the heat source, and the hot air directly contacts the material for countercurrent drying, and the drying temperature is about 60°C. Combined drying adopts two drying methods to combine drying, and the drying temperature is about 60°C. In order to improve p...

AI Technical Summary

Problems solved by technology

[0004] Since the fresh fermented feed is relatively humid and viscous, when the tube dryer is used for drying, it is easy for the material to stick to the tube wall, resulting in local overheating, uneven heating, and poor overall thermal efficiency; and because the heat source medium of the tube dryer is steam The temperature is relatively high, and the fermented feed products generally have low activity and product denaturation after drying. If low-temperature steam is used, there is a problem of low production efficiency.

[0005] When using fluidized bed drying, the material is easy to stick to the agitator, orifice plate and feeder in the drying room, which is not suitable for viscous materials

[0006] The active drying tower uses relatively mild hot air for drying. Although it can avoid the denaturation of the fermented feed, the drying time is too long, the production efficiency is low, the energy consumption is too high, and the material is easy to stick to the agitator and feeder in the drying room. Not suitable for viscous materials

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