Fish feed machine parameter selection
Cooking fish feed pellet machine expanded pellet feed with material, ripening grain appearance roundness, feed sterilization disinfection, to prevent water pollution prevention and control of fish disease etc, used for rare delicate ornamental fish, not only increase the digestion and absorption rate of fish, and raise breeding of aquatic animals in the family in, particle colourful, make colorant itself are ornamental, in the farming field, The floating rate of particles is easy to store, which greatly reduces the labor intensity of workers.
The length to diameter ratio of the screw of the fish feed machine is larger, the length of the screw is longer, and the kneading and extrusion of the material is more sufficient. The conveying time of the starch in the raw material is sufficient, and the length to diameter ratio is ideal between 8 and 12.
Material compression ratio selection, material into the feed hopper, due to the screw compression ratio and resistance to the design of the module, and the extrusion of the screw, the material in the granulation chamber by continual compression and shearing, kneading and the resulting pressure, reach the machine, the effect of the water flash and grains puffing material compression ratio refers to the feeding period of osteoporosis, The density ratio of the powder material and the viscous flow material in the final cooking section, the ornamental fish feed particle size is small, the feed material fineness is easy to slip in the screw groove, therefore, the compression ratio can be selected slightly larger than that of the general freshwater fish feed extruder.
The size of the clearance between the screw edge surface and the inner wall of the sleeve of the pet fish feed equipment can directly affect the size of the working pressure. When the clearance is large, the material will have a large flow rate in the barrel, and the working pressure will be large, and the expansion rate will be reduced. The backflow material will be formed and coked in the cavity due to the small friction extrusion pressure, and the pore will be blocked, so the production will be interrupted. But the gap is too small, between the screw and sleeve, due to the difficulty of processing technology is too high, may cause local friction, affect the service life of parts, unilateral general gap is only 0.3 mm.
