Fermented feed drying system

Abstract

The invention relates to a fermented feed drying system which comprises a feeding machine, a tube-type drying machine taking steam as a heat source and a tower-type drying machine taking hot air as a heat source. Fresh fermented feed enters from a main feed opening of the feeding machine, a material outlet of the feeding machine is connected with a feed opening of the tube-type drying machine, a main steam tube is connected with a steam inlet of the tube-type drying machine, and an exhaust fan is mounted at an exhaust outlet of the tube-type drying machine; a feed opening and an air outlet are formed in the top of the tower-type drying machine, and a discharge opening and an air inlet are formed in the bottom of the tower-type drying machine; a discharge opening of the tube-type drying machine is connected with a feed opening of sieving and conveying equipment, a screen underflow outlet of the sieving and conveying equipment is connected with the feed opening of the tower-type drying machine, a screen overflow outlet of the sieving and conveying equipment is connected with an auxiliary feed opening of the feeding machine, wherein the auxiliary feed opening is located above the main feed opening; and the hot air accesses the air inlet of the tower-type drying machine after being heated by an air heater. The fermented feed drying system is low in energy consumption and high in drying efficiency, and can maintain the activity of the fermented feed.

Description

technical field [0001] The invention relates to a feed drying system, in particular to a fermented feed drying system. Background technique [0002] In the prior art, fluidized bed dryers, tower dryers, tube dryers, tunnel dryers, etc. are usually used to dry fermented feed. Among them, the tubular dryer uses high-temperature steam as the heat source, with high heating temperature and fast drying speed; the tower dryer uses hot air as the heat source, with low heating temperature and slow drying speed. In order to improve production efficiency, it is very common to use tubular dryers in the field of fermented feed drying. [0003] Since the fermented feed will produce a large amount of biological enzymes and other active substances, if the material temperature is higher than 70°C during the drying process (different products have different temperature resistance), the fermented feed will easily lose its activity. Therefore, the fermented feed is a heat-sensitive material. ...

AI Technical Summary

Problems solved by technology

[0004] Because the fresh fermented feed is relatively humid, 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 temperature of the heat source medium steam of the tube dryer Relatively high, fermented feed products generally have low activity and product denaturation problems after drying, such as the use of low-temperature steam and low production efficiency

[0005] The tower dryer 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, and the energy consumption is too high

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