GENERAL PRINCIPLES INVOLVED IN THE ORGANISATION OF A CONDITIONING CENTER AND THE DISPATCH OF SEA PRODUCE
(European Regulation, European directive of July 15, 1991 91/492/CEE)
Use and maintenance
Sorting dead fish
The sorting of dead fish is practised in coastal fishing and in aquaculture.
For fishermen, generally, the objective is to quickly sort large quantities of fish, sorting by species and size.
For fish farmers, the automatic sorting must make it possible to make batches of homogenous undamaged fish.
The classification of the principles, methods and materials used can be represented as follows :
THE SORTING OF DEAD FISH (BY SIZE)
M Sorting with longitudinal sorting bars
The principle is based on the guidance of the fish along vibrating longitudinal bars with progressively wider spacing (like fruit sorters). The fish are therefore sorted according to the standard dimensions (which is generally the diameter of the head behind the gills). The progression of the fish is ensured by the vibrations, the slight slope of the system, and a water jet to help the fish to slide.
The bars can be replaced by triangular section vibrating sieve tubes with variable spacing. This sieve is used for the sorting of reared shrimps. The many commercial calibres (international standard) of peneid shrimps can be obtained by superimposing several sieves, sorting them more and more finely, like a hopper. Since each sieve has four calibres, three sieves give 12 very standard calibres.
Sorting the species and sizes opticallyThe species of fish must be recognized automatically and very quickly by an optical camera which is linked to a computer which discriminates the morphological characteristics and controls the mechanical conveying system, the slides and the ejection valves (it is slaved to acomputerised electromechanical system).The optical sorting of dead fish (species selection) functions all the better if the species have typical shapes which are easy to identify.
Electronic fish sorter
Corniche du Bois Sacré
83500 La Seyne sur Mer
Tél. : 04 94 10 26 26
Fax : 04 94 10 26 30