Bycatch Separator
Bycatch Separator
The Bycatch Separator handles the grading of small fish from shrimps in a simple and effective way. It is based on the principle that fish and shellfish stick to the conveyor belt in different ways. Varying inclination and speed of the conveyors ensure that the species are separated due to the different adhesion of bycatch and friction of the shrimps.
Upgrade of Bycatch Separator
Intech has developed a gear-to-drum-motor rebuilding kit for Intech Bycatch Separator, with which you can now benefit from upgrading your own Intech Bycatch Separator. By doing so, you avoid a number of spare parts and you get better access around the machine.
How Bycatch Separator works
The conveyor belts within the separator travel at much higher speeds than regular conveyor belts. The speed is adjustable, and different speeds are used depending on the species of fish mixed in with the shrimp catch. Usually, conveyor 1 is made to go faster than conveyor 2. The incline is also adjustable. By using different inclines and speeds, the species are separated. The ones which easily attach themselves (small fish) are conveyed up and then fall down into a collecting vessel, whereas the ones offering less friction (shrimps) slide back down the conveyor belt.
Shrimps and small fish in a Bycatch Separator
The sketch shows the course of the separation. A mixture of shrimp and bycatch, i.e. capelin and other small fish, is transported to the machine and feeds it. It is important to adjust the speed of the feeding of the supplying conveyor belt to regulate the quantity supplied to the machine. The shrimp/fish ratio, as well as what species are involved, determines the effectiveness of the machine. The speed should be adjusted so that conveyor 1 can keep up with the separation. “Difficult” mixtures must be fed at a slower pace into the separator.
Intech Bycatch Separator in details
The bycatch separator itself can be moved forward and back on its supports. This is to enable the “point of impact” to be moved, i.e. the point where the shrimp mixture hits the conveyor. If the bycatch consists of fish that is not sticky, the point of impact should be moved to the left, making it fall from a greater height and thereby impacting more heavily with the conveyor and giving it a greater possibility of attaching itself to the conveyor. If the bycatch is small, i.e. compared with shrimp, the point of impact should be moved to the right.
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Specifications
Conveyor 1 and 2 of the bycatch separator
Conveyor 1 is intended for rough sorting and conveyor 2 for careful sorting. The incline is used for adjusting the balance between the catch conveyed upwards (the fish) and the catch falling back (the shrimp). Conveyor 1 must always be more flat (less steep) than conveyor 2, to prevent the shrimps from being conveyed to the collecting vessel along with the fish. There is a screen installed on conveyor 1. The purpose of the screen is to prevent the mixture coming from conveyor 1 from rising too high on conveyor 2, giving the mixture more time to separate on its way upwards on conveyor 2. It is important to be aware that as the conveyor belts become worn, the friction increases, making it necessary to adjust them, i.e. make them steeper.
Bycatch Separator control panel
Uppermost are the two displays that show the speed of the conveyors. Speed is indicated in meters per minute. The speed is regulated by adjusting the hydraulic motors operating the conveyors. The incline is adjusted with the buttons.
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Technical data
TECHNICAL DATA Motor type Drum motor Motor power 0,37 kW Power supply 3x 400 V or 3 x 220 V Full Load Amps (FLA) 3A / 0.8 kW OPTIONAL EXTRAS Adjustable for heeling in high seas - Product information
Highlights
- The bycatch separator handles the manual and tedious work
- Available in all sizes with different capacities - the largest with over 120 tons per 24 hours
- Shrimps are produced in much shorter time
- The final result is of perfect quality
- Can be made for all capacities