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How Many Types Of Floating Fish Feed Extruders Are There?

DATE:Jul 11th, 2022
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There are two types of floating fish feed extruders that are the most widely known. One is a single screw extruder for fish feed and the other is a fish feed twin screw extruder machine.

 

Principal of Twin Screw Fish Feed Extruder

Twin screw fish feed extruders provide counter-rotation. These come with a very wide range of screw sizes and designs. Both single-screw and twin-screw fish feed making machine are axial open channel extruders as they can be thought of as drag flow pumps. If the output or filling is not at the maximum volume flow, it may be affected by the pressure flow in the fish feed extruder. It can be seen that the output of the counter-rotating twin-screw extruder is less brittle compared to the pressure flow in the floating fish feed extruder, forming closed channels in the intermeshing region. They are considered to have positive displacement pumps.

 

Function of Single Screw Fish Feed  Extruder

The main function of the fish feed extruder is to convert the raw material of fish feed into extruded feed pellets through high pressure, high temperature, heating and extrusion.
The single screw extruder for fish feed has developed from the initial basic spiral structure, such as damping screw block, exhaust screw, slotted screw barrel, pin barrel, building block structure, and other different structural types.
Single screw floating fish feed extruder is the most mature technology and the most used extrusion Machine type.
The extruder is responsible for performing all of the above processes using the barrel, screw and screw blades. The plastic pellets enter the barrel through a hopper located at one end of the barrel, and the tan is sent to the other end of the barrel through a screw. To maintain pressure, the screw thread depth decreases as the hopper continues to increase.


The working principle of twin-screw floating fish feed extruders is the same as that of single-screw fish feed extruders. All processes such as conveying, mixing, pressurizing, drying, cooling are completed arround with these fish feed extruders.
 
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