Scylla paramamosain large-size offspring seed male and female sorting equipment

The modularly designed equipment for sexing large-sized mud crab seedlings uses an image acquisition system to identify the abdominal and umbilical features of the crab seedlings, and combines data processing and a paddle control system to automatically separate male and female individuals. This solves the problems of low efficiency and poor accuracy in existing technologies and provides an efficient and reliable sex sorting solution.

CN120753222APending Publication Date: 2025-10-10EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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Patent Information

Application Number
CN202511228115.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-29
Publication Date
2025-10-10

AI Technical Summary

Technical Problem

In the existing technology, the efficiency and accuracy of male and female sorting of large-sized mud crab seedlings are low, and the operation is highly dangerous, which makes it difficult to meet the rapid grading needs of large-scale hatcheries.

Method used

A large-scale male and female sorting equipment for mud crab seedlings was designed. The equipment adopts a modular design and includes a conveying system, a counting system, a support device, a seedling delivery device, an imaging system, and a data processing and control system. The abdominal and umbilical features of the crab seedlings are identified through the image acquisition system, and the automatic separation of male and female individuals is achieved by combining data processing and a paddle control system.

Benefits of technology

It achieves efficient and accurate sex sorting, improves sorting efficiency, reduces operational risks, adapts to the breeding scenarios of crab seedlings of different specifications, and provides efficient and reliable sex sorting equipment.

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Abstract

The invention belongs to the technical field of male and female fry sorting, and discloses male and female sorting equipment for large-size scylla paramamosain fries. Comprising a juvenile crab throwing box, a support cross beam, a movable tail plate, a double-leaf door type switch, a support leg structure, an infrared counter, a juvenile crab box, an adjustable height limiting plate, a transparent crawler belt, an image acquisition system, a data processing and shifting piece control system, a data line, a movable shifting piece and a movable separating plate. After analysis of the image acquisition system and the data analysis system, when the individual sex cannot be distinguished due to the conditions that images are fuzzy or measurement parts are shielded, the movable separation plate is controlled by the controller and rapidly and obliquely moves upwards, so that the juvenile crabs slide into the juvenile crab box with the head close to the ground along the baffle after being collected on the movable separation plate, and the juvenile crabs are separated from the juvenile crabs. And then the collected juvenile crabs are distinguished again in a manner of throwing the juvenile crabs again or manually sorting the juvenile crabs.
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