Whether it is the new aquatic feed processing plant or the original food production line transformed from the old factory, the extruder model and specification should be considered first when using the extruder, and then the supporting machine should be determined according to the production capacity. In particular, when the old factory is transforming the original production line, it is necessary to consider whether the production capacity of the original feed factory, dryer and cooler can support the normal operation of the new extruder.
Specifically:
Expansion effect
For the processing of aquatic feed, good swelling effect directly affects the pellet forming rate. It is generally believed that good expansion feeding requirements: particle crushing rate is less than 1%, particle suspension rate (sinking rate) up to 100%, uniform particle size, uniform color, good water resistance; Floating feed can be kept in water for at least 10 hours without diverging, while sinking feed can be kept in water for at least 3 hours without collapsing.
Price of investment
Compared with the single screw extruder of the same output, the price of the twin screw extruder is about 1.5 ~ 1.7 times of the single screw extruder; The wear parts and power consumption are about 1.5 times that of single screw extruder.
The service life
Different manufacturers of equipment due to structural characteristics and the use of different materials, the service life is not the same. Therefore, when choosing equipment, special attention should be paid to whether the structural design is reasonable. The key is the wear resistance of the wearing parts. Also, consider whether you can save energy and reduce the cost of running the machine. The raw material without ultrafine grinding has more serious wear on the vulnerable parts of the twin screw extruder. In this case, it is best to use a single screw extruder.
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