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High-density fish culture catching device and catching method thereof

A fish farming, high-density technology, applied in fishing, application, fish farming, etc., can solve the problems of not being suitable for long-distance live fish transportation, short survival time of fish, and large stress response, so as to improve survival rate and survival time, good fishing effect, and small stress response

Pending Publication Date: 2018-03-02
汉寿县武华淡水生态养殖有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of fishing gear will be caught together with fish of various specifications when fishing. After collecting the collection cage, it is necessary to manually pick out those fish that do not meet the listed specifications. Not only is the operation troublesome, but also the damage to the fish is great. In addition, the process of this kind of fishing gear from lifting the net into the collection cage is passive, and the stress response of the fish is large. The survival time of the caught fish is not long, the survival rate is not high, and it is not suitable for long-distance live fish transportation.

Method used

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  • High-density fish culture catching device and catching method thereof
  • High-density fish culture catching device and catching method thereof
  • High-density fish culture catching device and catching method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as Figure 1-3 Shown, the high-density fish culture of the present invention is used to catch device, comprises lifting net 1, lifting net power part 2, wherein lifts four corners of net 1 and every two corners in four corners The center is equipped with support rods 6 and dragging ropes 7, a total of 8 supporting rods 6 and 8 dragging ropes 7, wherein four supporting rods (respectively No. 1 supporting rods 6.1, No. No. 6.2 support rod, No. 3 support rod 6.3, and No. 4 support rod 6.4) are designed to be two high and two low. The two high-end support rods (namely No. 1 support rod 6.1 and No. The two support rods (that is, No. 3 support rod 6.3 and No. 4 support rod 6.4) are close to the shore; while the two support rods at the high end (that is, No. 1 support rod 6.1 and No. 2 support rod 6.2) and between the two The support rods (that is, No. 5 support rod 6.5) are all at the same height, forming a high-end support rod; the two support rods at the low end (that...

Embodiment 2

[0030] Except following difference, all the other are with embodiment one:

[0031] Such as figure 1 , 4 5. The mesh screen with adjustable mesh size in this embodiment includes a first layer of mesh screen 4.8 and a second layer of mesh screen 4.9, wherein the first layer of mesh screen 4.8 and the second layer of mesh screen 4.9 are made of outer frame and The screen mesh is composed of the first layer of mesh screen 4.8 and the screen mesh on the second layer of mesh screen 4.9 are regularly distributed and the outer periphery of the screen mesh is embedded and fixed on the outer frame, the outer frame of the first layer of mesh screen 4.8 and the second layer of mesh screen The outer frame of mesh screen 4.9 is nested inside and outside and rotated to fit. By rotating the outer frame of the second layer of mesh screen, the overlap of the meshes of the two layers of meshes is adjusted to realize the adjustment of the mesh size, so as to adapt to the specifications of the ...

specific example

[0033] When making, the length and width of the lifting net of the present invention are 20m*20m, and the net cage is long 20m, wide 4m, and high 3m. The heights of No. 4 support bar, No. 4 support bar and No. 6 support bar are all 4m, the heights of No. 7 support bar and No. 8 support bar are 5m, and the mesh size of the adjustable mesh screen is 7*7cm (approx. The size of the screen hole should be adjusted according to the fullness of the fish to be caught. The best distance between the rocket aerator and the screen is 1m. The diameter difference between the large reel and the middle reel is The diameter difference between the middle reel and the small reel is about 0.32m. It can also be a lever mechanism as for lifting the net power part.

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Abstract

The invention discloses a high-density fish culture catching device. The high-density fish culture catching device comprises a lifting net and a net hauling power part, wherein supporting rods and netpulling ropes are arranged on the four corners of the lifting net, a pulley is fixed to the top of each supporting rod, the four net pulling ropes wind around the corresponding fixed pulleys and thenare connected with the net hauling power part, a cuboid net cage with the two ends opened is connected to the lifting net and communicated with the lifting net, a net sieve with adjustable net holesis fixed to the end, away from the lifting net, of the cuboid net cage, and a rocket aerator is arranged at the position which is away from the net cage and spaced from the double-layer net sieve by 0.8-1.5 m. In addition, the high-density fish culture catching device effectively reduces labor cost, is good in fishing effect and particularly suitable for the place with high-density (about 5000 kg / mu) multiple stocking and multiple fishing due to small damage.

Description

technical field [0001] The invention relates to a catching device for high-density fish farming and a catching method thereof, belonging to the field of aquaculture equipment. Background technique [0002] With the comprehensive advancement of the live fish distribution business, its live fish fishing, stocking, transportation and other technologies have become key research topics for professionals in the industry. The original traditional fishing methods that are harmful to the fish body have been eliminated and replaced by various types of fishing devices that do little damage to the fish. Fishing is achieved by luring fish, and lifting the net is one of the methods. Lifting net fishing is to set the lifting net to extract the sinking net in the fishing waters, trap the fish through light trapping, bait centralized trapping, and then quickly lift the net to pocket the fish in the net to achieve the purpose of fishing. [0003] CN201611002210X discloses a lifting net type ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K79/02A01K61/95
CPCA01K61/95A01K79/02
Inventor 马文化
Owner 汉寿县武华淡水生态养殖有限公司
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