Feed processing equipment is usually selected according to production scale, production varieties and production technology. Therefore, different feed mills often use different equipment. But some basic equipment for feed processing is the same, including raw material receiving and cleaning equipment, conveying equipment, crushing equipment, batching equipment, mixing equipment, granulating equipment, puffing equipment, liquid spraying equipment, ventilation and dust removal equipment, packaging equipment and central control system.

Raw material receiving and cleaning equipment mainly includes weighbridge, primary cleaning screen and cylinder bin;

Commonly used conveying equipment includes screw conveyor, bucket elevator, scraper conveyor, belt conveyor and pneumatic conveying equipment;

Crushing equipment includes magnetic separator, feeder, pulverizer, etc. Among them, there are many kinds of pulverizers, such as hammer pulverizers and claw pulverizers, and micro pulverizers that need finer granularity.

The batching equipment generally adopts electronic automatic batching scale; The types of mixers used to produce premix are horizontal double-shaft (single-shaft) paddle mixer, horizontal spiral mixer, vertical mixer and waist drum mixer;

Granulation equipment includes steam boiler, conditioner, granulator, cooler, grading screen and crusher.

The puffing equipment comprises a conditioner and an puffing machine; The liquid spraying equipment comprises a liquid storage tank, a vacuum pump and a flowmeter;

Ventilation and dust removal equipment includes exhaust fan, brake dragon and dust collector. Packaging equipment includes packaging scales, sealing machines, etc.

The central control system is the "brain" of the whole processing process, and the control systems of all kinds of equipment are concentrated here.

Production line equipment and process flow of medium and large feed equipment

1. Raw material cleaning

Receiving bulk raw materials of corn and soybean meal; The cleaning process is to put the corn and soybean meal qualified by the raw material inspector into all operating units of the silo. In this process, firstly, impurities in raw materials are removed by impurity removal equipment, and then transported to the silo by receiving equipment and demagnetization equipment as planned. Production line equipment includes receiving devices (such as unloading pits and platforms), conveying devices, primary screening and magnetic separation devices (such as permanent magnet cylinders and permanent magnet rollers). The acceptance of bagged raw materials means that the loading and unloading personnel unload the raw materials that have passed the inspection by the raw material inspector and store them neatly in the warehouse. In the process of receiving goods, we should do four things: 1, and accurately count the quantity; 2, raw materials without quality problems; 3. The receiving path is correct; 4. The receiving environment is clean.

2. batching process

The batching process is to weigh the raw materials in the batching bin from the feeder under each batching bin according to the formula requirements. Each raw material is weighed by the batching scale and transported to the powder storage bin. The ingredients are weighed out from the silo, and these weighed raw materials enter the powder silo. After adding a small amount of materials and premixes, directly weigh them manually and put them into the silo for mixing. The quality of batching process directly affects the accuracy of product batching.

3. Crushing process

The crushing process is to send the raw materials to be crushed in the silo into powder, and then send them into the silo by the conveyor for mixing. The purpose of this process is to control the particle size of the material. The design efficiency of crusher in this process determines the productivity of process equipment, and it is also the most energy-consuming process in the production of powdery materials. Monitor and confirm hammer, sieve, current, noise and crushing path at any time.

4. Mixing process

In the process of mixing, the crushed raw materials are discharged into the mixer from the mixing bin, and oil is added to the feed in the mixer through the liquid adding system as required, so that all components are mixed evenly and the required mixing effect is achieved. Consistency. The material discharged from the mixer is the finished product, which is directly sent to the packaging process of the finished product for packaging and delivery. When producing granular feed, the mixed powder is sent to the silo for granulation. In order to ensure the efficiency of the mixer, the maintenance personnel must check and maintain the equipment regularly and test the efficiency of the mixer regularly.

5. Granulation process

After magnetic separation and conditioning, the mixed materials are sent to the compression chamber of the granulator, compressed into granular feed, cooled by the cooling tower, and screened by the screening equipment to obtain standard granules. The magnetic separation equipment must be cleaned regularly to prevent iron impurities from damaging the granulator. When quenching and tempering, the steam quantity, ring die (aperture, compression ratio, material, etc.) should be adjusted according to the requirements of particle varieties. ) should be selected according to the requirements of particle processing quality. When cooling, the cooling tower should be adjusted according to the variety, indoor temperature and humidity, season and other factors to achieve qualified particle temperature and humidity. Adjust the cooling tower according to the variety, indoor temperature and humidity, season and other factors to achieve qualified particle temperature and humidity.

6. Finished product packaging process

The feed is weighed from the finished product warehouse with a packaging scale, packed in a packaging bag, then sealed with a label by a packer, and then transported to the warehouse by a transport vehicle for stacking.