Method for processing demersal pufted granular feed of river crab

Abstract

The invention is a sinkable bulked granular river-crab feed and its making method, additionally arranging a variable-frequency speed regulator on the main electric machine of an ordinary screw squeezer to regulate the speed of the screw, combining with related control process conditions, making better waterproof sinkable bulked granular river-crab feed. According to the nutrition needs of the river crabs, it selects and compounds fish meal, soybean dregs, wheat and other raw materials, and makes it by the working procedures of micro-crushing, mixing, regulating quality, extruding, drying and cooling, etc and by the control of the conditions of crushed particle size, material water and temperature after quality-regulating, the screw speed of the squeezer, segment barrel temperature, etc. It has good waterproof property, high gelatination degree, very quickly absorbs water to turn soft after entering in water, suitable for the river crabs to ingest.

Description

technical field [0001] The invention discloses a processing method for producing river crab sinking puffed granular feed with a single-screw extruder, and relates to the field of feed extrusion puffing processing. technical background [0002] River crab is one of my country's famous and high-quality aquatic products, which has a large market demand and good breeding benefits. In recent years, river crab breeding has developed rapidly. In 2000, the output of river crabs in Jiangsu Province was close to 90,000 tons, and thus formed an industrial chain consisting of nursery, breeding, feed, crab medicine, processing, sales, and catering. To achieve an output value of 5.5 billion yuan. Jiangsu Province's river crab production and breeding area account for more than 50% of the country's total. River crabs are still in short supply and high in price in the market, and the market potential is still huge. [0003] River crabs are benthic crustaceans and are accustomed to looking...

AI Technical Summary

Problems solved by technology

[0004] The existing river crab compound feed is a hard pellet feed pressed by a granulator, which has the problems of poor water stability, large feed waste, and serious impact on water quality.

When hard pellet feed is used as aquatic feed, in order to improve water stability, the pellets are often pressed very hard, which will make it difficult for river crabs to feed, and also increase the difficulty and production cost of feed pelleting; It increases the cost of feed, and may also affect the digestion and absorption rate of feed. Some binders also have the potential to affect human health through the food chain; it will be difficult to produce hard particles with small particle sizes. It is difficult to break large particles into small particles. The water stability of the particles is greatly affected