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A method for releasing and collecting large jellyfish special for trawling

A collection method and technology of jellyfish, applied in application, fishing, animal husbandry, etc., can solve the problems of jellyfish flooding, jellyfish cannot be concentrated treatment, etc., and achieve the effect of increasing the overall length, preventing top contact, and avoiding damage

Active Publication Date: 2020-04-07
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical scheme adopted by the present invention to solve the problems existing in the background technology is: a large-scale jellyfish release-collecting method dedicated to trawl nets, in which a separation device is set at the front end of the mesh bag of the trawl net to separate the jellyfish, and the fish suction pipes correspondingly arranged in the separation device are used to absorb the jellyfish. For jellyfish, the jellyfish inside the trawl net is first separated from the trawl net through the separation device, and a corresponding fish suction pipe is set at the jellyfish outlet end of the separation device, and the separated jellyfish and aquatic products around the separation device are collected by the suction of the fish suction pipe and collected. Treatment, effectively solves the problem of jellyfish flooding and jellyfish that cannot be treated centrally, and can also absorb aquatic products other than trawl nets and prevent catches from escaping, which is conducive to increasing catch production

Method used

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  • A method for releasing and collecting large jellyfish special for trawling
  • A method for releasing and collecting large jellyfish special for trawling
  • A method for releasing and collecting large jellyfish special for trawling

Examples

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Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 and figure 2As shown, a special large-scale jellyfish release-collection method for trawl nets is provided with a partition device 2 to separate the jellyfish at the front end of the mesh bag 3 of the trawl net 1, and the jellyfish is sucked by the fish suction tube 5 corresponding to the partition device 2, and the fish suction tube 5 is "Y "shaped pipe, filter plate can be set at the "Y" shape shunt of "Y" shape fish suction pipe 5, one pipe discharges jellyfish and a small amount of water and the other pipe discharges most of the extracted water, which is beneficial to the centralized treatment of jellyfish , and remove excess water, which is beneficial to save the work cost of jellyfish and water separation. The inlet end of the shape fish suction pipe 5 is correspondingly arranged with the partition device 2, and it is optional to arrange magnets correspondingly at the partition device 2 and the fish suction pipe 5 inlet ports or can Control the ...

Embodiment 2

[0032] refer to Figure 8 , the optimization scheme of this embodiment on the basis of Embodiment 1 is: the fish suction pump 6 includes a transmission shaft 602, the transmission shaft 602 is connected with the base 611 through a fixed frame 612, the end of the transmission shaft 602 is connected with a coupling 601, and the coupling There is a fixed bracket below the device 601, the middle part of the transmission shaft 602 is connected with a bearing, and a bearing box 603 is arranged outside the bearing, a disassembly ring 604 is connected to the top of the bearing box 603, a rear cover 605 is connected to the top of the transmission shaft 602, and the rear cover 605 A front cover plate 608 is mated and connected, an impeller 607 is arranged between the front and rear cover plates, a vortex chamber 606 is arranged at the upper and lower ends of the impeller 607, a stuffing box 609 and a water seal ring 610 are also arranged on the fixed frame 612, and a fish-absorbing ring ...

Embodiment 3

[0034] refer to Figure 2~7 , the optimization scheme of this embodiment on the basis of Embodiment 1 is: the separation device 2 is a cuboid, the separation device 2 is provided with a partition grid 202 inclined by the side of the mesh bag 3, and the two ends of the separation grid 202 are connected with floating balls 205, and the partition Grille 202 both sides are provided with collar 206, and the collar 206 of both sides is connected by the dividing grid 202 that is set horizontally, and separating grid 202 top is provided with release port 203 and closing net 204, and separating device 2 leans on trawl 1 side surface top and is inclined to set. There is an induction net 201, and the induction net 201 and the separation grid 202 form an inverted triangular space with a gap at the bottom in the separation device 2. The upper part of the separation grid 202 is bent and set, and the bending angle b is preferably 147°. The separation grid 202 and the separation device 2 are ...

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Abstract

The invention discloses a large jellyfish releasing and collecting method special for trawls, and belongs to the field of marine biological resource utilization. According to the method, a separatingdevice is arranged at the front end of a codend of a trawl to separate jellyfish, and a fish sucking tube arranged corresponding to the separating device is used to suck jellyfish, jellyfish in the trawl is firstly separated from the trawl through the separating device, and the corresponding fish sucking tube is arranged at a jellyfish outlet of the separating device, so that the separated jellyfish and aquatic products around the separating device are collected and processed by using the suction force of the fish sucking tube, thereby by effectively solving the problem of wide spreading of jellyfish and inability of intensive processing of jellyfish. Meanwhile, the method can suck aquatic products out of the trawl and prevent catches from escaping, thereby facilitating increase of catch production.

Description

technical field [0001] The invention belongs to the field of utilization of marine biological resources, and in particular relates to a method for releasing and collecting large-scale jellyfish special for trawl nets. Background technique [0002] With global warming, seawater eutrophication and continuous deterioration of the marine environment, jellyfish outbreaks have become more and more serious worldwide. The outbreak of jellyfish will have extremely bad effects on human activities, society and economy. Among them, marine fisheries are the most severely affected by jellyfish outbreaks. Because the jellyfish outbreak not only destroys the nutrient cycle of the marine food chain, but also seriously hinders human fishing operations. The operation most affected by jellyfish outbreaks is trawling. Because trawling relies on fishing boats to tow nets to operate in the sea, it is an active fishing gear. According to fishermen, if jellyfish are encountered during trawling o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K79/00
CPCA01K79/00
Inventor 阳广凤冯丽娟穆军孙静亚高锋刘俊稚
Owner ZHEJIANG OCEAN UNIV
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