River crab automatic classifying device

Abstract

The invention relates to the technical field of river crab breeding equipment, in particular to a river crab automatic classifying device. The river crab automatic classifying device comprises a feeding mechanism, a classifying mechanism, a discharging mechanism and a controller, wherein the feeding mechanism comprises a hopper conveyor; the classifying mechanism comprises a machine frame and three classifying boxes which are fixedly mounted on the machine frame; each classifying box is electrically connected with the controller; the three classifying boxes include a first classifying box, a second classifying box and a third classifying box; a feeding opening of the second classifying box and a feeding opening of the third classifying box are respectively formed in two sides below a discharging opening of the first classifying box; the hopper conveyor is arranged on the side of the machine frame; a discharging opening of the hopper conveyor is formed above a feeding opening of the first classifying box; and the discharging mechanism is fixedly mounted on the machine frame, and is arranged below the lowermost layer classifying box. Through the adoption of the river crab automatic classifying device disclosed by the invention, river crabs can be weighted and classified continuously without binding the river crabs, so that the efficiency is high; and measuring is performed twice, so that mechanical errors are reduced, and the classifying of the river crabs is more accurate.

Description

technical field [0001] The invention relates to the technical field of river crab breeding equipment, in particular to an automatic grading device for river crabs. Background technique [0002] The scientific name of river crab is Chinese mitten crab, which is a rare freshwater product with delicious taste, rich nutrition and high economic value. River crabs like to live in caves on the mud banks of rivers and lakes or tidal flats, or hide in gravel and water plants. River crabs take burrowing as their instinct, which is also an adaptive way for river crabs to defend against predators. Crab burrows are generally chosen on steep banks with hard soil, with bank slopes of 1:0.2 or 1:0.3, and rarely on gentle slopes below 1:1.5-2.5, let alone burrows on flat ground. This provides a basis for the construction of our breeding ponds, and the river crabs can be caught and sold after they reach a certain age. [0003] At present, in the sales process, river crabs are generally sol...

AI Technical Summary

Problems solved by technology

[0005] The automatic grading device disclosed in this patent is inefficient and can only weigh one crab at a time. If multiple crabs are placed on the automatic grading device at the same time, it is possible that the crabs will entangle with each other and the weight of two crabs will be regarded as The problem of weighing a river crab

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