First, computer automatic control technology Foreign computer automatic control technology has already been applied to aquafeed processing. In some large and medium-sized feed processing plants, dozens of feed formulas are accurately controlled by computer automation. The automatic weighing and packaging of pellet feeds is also controlled by computers and has high precision. The entire feed processing process has been developed into a high-level automatic control system by a single computer control system. In the central control room, color images can be displayed, and computer program control and machine operation communication networks can be used to complete the entire production in the unmanned operation. program.
Second, spraying technology In order to formulate and process high-fat and high-quality aquatic pellet feed, spray technology is used to spray fat and vitamins on feed. The commonly used method is:
1. Add or spray grease or the like in a conditioner of a mixer or a granulator, and uniformly stir and mix with raw materials.
2. The fuel injection system is installed in the molding cavity of the granulator to spray grease on the surface of the pellets just extruded, thereby improving the quality of the pelleted feed and improving the palatability.
3. When processing prawn feed, install a set of liquid spray equipment to spray oil and spray vitamins. Thus greatly improving the quality of shrimp feed.
Third, the use of steam on the feed conditioning steam on the material conditioning the earliest applied to the granulator and extruder on the conditioner, the material can be cooked, softened, and can increase the production of granulation. Now, with the improvement of shrimp feed processing requirements, how to solve the problem of improving the stability of pelleted feed water without binders has become an urgent problem to be solved. Some foreign feed processing plants use three-layer steam conditioner on the granulator to make pellet feed water stable for more than 10 hours. The surface of the pellets is smooth and has a good texture. It is an ideal shrimp pellet feed.
Fourth, fish and shrimp seed opening feed processing technology Open feed is also called microparticle feed, it according to the seed's living habits, physiological functions and nutritional needs of different growth period for processing, but also to meet the microparticle feed suspension, water stability , low solubility, easy digestion and absorption and different particle size requirements.
Now introduce foreign commonly used micro-particle feed processing technology:
1. In the feed processing process, a device particle mill. The large pellet feed that is to be extruded by the granulator is processed by a crusher, and then subjected to vibration screening through different meshes to obtain the required different specifications of microparticle feed.
2. Micro-particle processing. The required ingredients of the seedlings are mixed well and the mixture is added. Then the microparticles of different particle sizes are mechanically processed by an ultrafine pulverizer and the like, and the microparticles with different mesh numbers are obtained through vibration screening.
3. Microcapsule processing technology; There are two kinds of physical mechanical forming method and chemical solidification forming method, the former using spray drying and other processes, the latter using a single condensation, complex coagulation and other methods. The technology is simple and low-cost. Fengrun Agricultural Information Center
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