Drying and cooling system for production of cured powdery feed

A dry cooling, powdery technology, applied in cooling systems and drying fields, can solve the problems of troublesome box cleaning, low suspension speed, easy cross-contamination, etc., to ensure the cooling and drying effect, keep clean and hygienic, and avoid cross-contamination effects.

Pending Publication Date: 2018-05-04
FEED RESEARCH INSTITUTE CHINESE ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Drying and cooling system for production of cured powdery feed
  • Drying and cooling system for production of cured powdery feed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Carry out drying and cooling when the conditioned powdery feed moisture of embodiment 1 is less than 18%

[0046] (1) Open the cooling air inlet, close the drying air inlet, start the cooling fan, all the cooling air enters from the air inlet on the side of the discharge hopper, and then start the cooler feeder to start feeding the cooler.

[0047] (2) The temperature of the mature powdery material coming out of the high-efficiency steam conditioner is 85-95°C, and the moisture content is 16%-18%. Lay flat on the multiple flaps that are equally arranged by the upper box discharge mechanism. When the powdery material is piled up to a height of about 300mm in the upper box, the upper material level device of the upper box sends out a signal, which makes the hydraulic cylinder or air cylinder push the crank connecting rod mechanism to move, and drives the flap to rotate around each axis, and the material will flow from each The gap between the flaps falls, enters the middle...

Embodiment 2

[0052] Carry out drying and cooling when the conditioned powdery feed moisture of embodiment 2 is greater than 18%

[0053] (1) Open the air inlet for cooling air and drying air, start the cooling fan, and feed steam into the steam heat exchanger of the drying air inlet pipeline, and the air used for drying will be heated when it passes through the steam heat exchanger, and the temperature will increase to 50-70 ℃, enter the cooler from the air inlet on the upper part of the middle box; the air used for cooling enters from the air inlet on the side of the discharge hopper, and then start the cooler feeder to start feeding the cooler.

[0054] (2), (3), (4) steps are the same as example 1

[0055] (5) The air used for cooling enters the lower box vertically from the gap of the overlapping part of the discharge flap at the bottom of the lower box, and then enters the middle box vertically from the gap of the overlapping part of the discharge flap at the bottom of the middle box....

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B9/06F26B21/00F26B25/04F26B25/00F25D1/00A23N17/00
CPCA23N17/00F25D1/00F26B9/06F26B21/004F26B25/002F26B25/04
Inventor 李军国段海涛李俊秦玉昌董颖超牛力斌谷旭杨洁
Owner FEED RESEARCH INSTITUTE CHINESE ACADEMY OF AGRICULTURAL SCIENCES
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