Overview of animal feed mill factory's raw material receiving process
In animal feed production factories, different raw material receiving processes are adopted according to the types of raw materials received, the packaging form and the means of transportation used. Regardless of the receiving process, quality inspection and weight inspection of the raw materials are required.
Brief introduction of raw material receiving process in animal feed factory:
(1) Bulk trucks receive raw materials from bulk trucks and tankers (mostly grains and by-products from processing) that enter the feed processing factory, and are automatically unloaded into the receiving pit after weighing. Equipped with fences, it can not only protect personal safety, but also remove large impurities. The spacing between columns is about 40mm. A suction hood is required at the receiving pit, and the wind speed is 1.2-1.5m/s to reduce dust. After the raw materials are discharged into the receiving pit, they are sent to the vertical silo for storage or directly into the silo or batching silo (no need to pulverize powdery auxiliary materials) through the horizontal conveyor, bucket elevator, magnetic separator and automatic scale .
(2) Pneumatic conveying and receiving It can absorb raw materials from automobiles, tankers and ship silos, especially suitable for receiving raw materials from ship silos. The pneumatic conveying device consists of suction nozzles, feed pipes, unloaders, air shutters, and dust collectors. It is composed of generators and fans. Under the action of the wind of the fan, the suction device sucks the material into the unloader from the ship silo, and the separated material is discharged into the subsequent conveying device by the air shutter. The pneumatic conveying device can be divided into two types: mobile and fixed. Generally, large-scale animal feed mill plants should adopt fixed ones, and small-scale animal feed mills can adopt mobile ones. The advantages of pneumatic conveying device are clean material suction, less dust, simple structure, convenient operation and low labor intensity. The disadvantage is that the energy consumption is higher than other mechanical conveying.
(3)Receive in bags. There are two types of bagged raw material receiving: manual receiving and mechanical receiving.
①Manual reception is the use of manpower to move the bagged materials from the conveyor into the warehouse, stacking, unpacking and feeding, which is labor intensive, low in production efficiency and high in cost.
②The machine receives the car or train to transport the bagged raw materials into the factory, manually move it to the belt conveyor and transport it into the warehouse, and stack it by the machine. Or the bag is lifted from the truck or the ship by a crane, and then transported into the warehouse by a fixed belt conveyor for stacking. The mechanical reception has high production efficiency and low labor intensity, but the one-time investment in feed processing equipment is large.
(4) Receipt of liquid raw materials.
The most liquid raw materials received by animal feed mill factories are molasses and fat. When liquid raw materials are received, they must first be inspected. The main contents of the inspection are: color, smell, specific gravity, concentration, etc. Raw materials that have passed the inspection can be unloaded and stored. Liquid raw materials need to be shipped in barrels or tankers. The barreled slag can be moved by truck or forklift into the warehouse. When the tanker is shipped, the tanker enters the feed factory, and the receiving pump configured by the feed making factory pumps the liquid raw materials into the storage tank. The storage tank is equipped with a heating device, and the liquid raw materials are heated first during use, and then pumped to the workshop for addition.
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