In the new aquatic feed processing plant or the transformation of the original feed production line, the choice of extrusion machine should first consider its type, according to the feed production capacity to choose a matching extrusion machine; especially when the old plant transformation, should also consider the original crusher, dryer, cooler production capacity is sufficient. Selection should focus on several issues.
1, the puffing effect of the puffing machine
For aquatic feed, good puffing effect is the particle forming rate of 99% or more, particle pulverization rate of less than 1%, particle floating rate (sinking rate) 100%, uniform particle size, color, with good water resistance; floating aquatic feed in the water to maintain 10h, sinking aquatic feed in the water to maintain 3h does not collapse, etc..
2, the investment price of extrusion puffing machine
Twin-screw extrusion puffing machine equipment investment costs are the same production capacity of the single-screw extrusion puffing machine 1.5 to 1.7 times; the cost of wearing parts is about 1.5 times the single-screw extrusion puffing machine; electricity consumption costs are also about 1.5 times the single-screw extrusion puffing machine.
3, the service life of the extrusion machine
Different manufacturers of extruded puffing machine due to structural features and the use of different materials, the service life is not the same. Therefore, in the selection of extrusion machine, special attention should be paid to the wear resistance of some wearing parts, as well as its structural design is reasonable, whether it can achieve the purpose of reducing screw wear; in addition, in the selection of extrusion machine should also consider whether the machine can really achieve the purpose of energy saving and consumption reduction. For the raw materials without superfine powder, the wear and tear of the wearing parts will be more serious, especially the twin-screw extrusion puffing machine, this situation is more reasonable to choose a single-screw extrusion puffing machine.
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