Fry screening and counting device

Abstract

The invention discloses a fry screening and counting device. When fry are screened and counted, the fry are poured into a feeding port in the upper end of a screening bin, then the fry are dischargedout of a discharging port in the lower end of the screening bin after passing through a screening mechanism, a lower screening plate is connected with an upper screening plate through cooperation of ascrew and a crossed adjusting hole, upper screen holes and lower screen holes can be staggered to form coinciding through holes by simply adjusting the opposite positions of the lower screening plateand the upper screening plate. The shapes and sizes of the through holes can be adjusted according to the varieties of different fry, and therefore the needs of the fry of various sizes can be met through one set of equipment without replacing the screening plates. A vibration mechanism can drive the upper screening plate to reciprocate left and right along guide holes, and the fry screening efficiency is improved. The passing fry are counted and recorded through an infrared emitter and an infrared receiver on the opposite sides of each lower screen hole, the number of the fry can be precisely calculated, and the counted number can be displayed on a counting display screen. The fry screening and counting device is used for fry farming and producing.

Description

technical field [0001] The invention relates to the field of fry breeding, in particular to a fry screening and counting device. Background technique [0002] In the existing fish fry culture, especially in the trade of fish fry, it is necessary to sieve and count the fry. Now the calculation is based on the estimated number of fry in a small cup. The accuracy of this estimation method is not high. For expensive fry It is said that when buying and selling large quantities of fry, it will be unfair to the seller or the buyer, which will affect the normal operation of the fry market. For sieving, fish in different stages have different sizes, so there will be sieves with different aperture sizes. At the same time, different fish species may have different widths at the same stage, so the mesh size of fish sieves also needs to be determined according to the size of the screen. Each fish species is designed, which requires preparing multiple sieves to meet the requirements of d...

AI Technical Summary

Problems solved by technology

[0002] In the existing fish fry culture, especially in the trade of fish fry, it is necessary to sieve and count the fry. Now the calculation is based on the estimated number of fry in a small cup. The accuracy of this estimation method is not high. For expensive fry It is said that when buying and selling large quantities of fry, it will be unfair to the seller or the buyer, which will affect the normal operation of the fry market. For sieving, fish in different stages have different sizes, so there will be sieves with different aperture sizes. At the same time, different fish species may have different widths at the same stage, so the mesh size of fish sieves also needs to be determined according to the size of the screen. Each fish species is designed, which requires preparing multiple sieves to meet the requirements of different fish species, or changing the sieve before each sieving, which will greatly affect the work efficiency

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