System for mechanically pumping excreta of fish bodies in feeding cage

Abstract

The invention discloses a system for mechanically pumping the excreta of fish bodies in a feeding cage, which comprises at least one aquaculture net cage, and a floating device and a fish excreta collector which are arranged corresponding to the aquaculture net cage, wherein the floating device is fixed and suspended on water by a mounting bracket at the top of the aquaculture net cage; the aquaculture net cage and the fish excreta collector are connected with the floating device respectively; an excreta collection barrel is arranged at the bottom of the fish excreta collector, and is connected with an excreta pumping machine by an excreta pumping pipe; and the fish excreta collector is provided with a vibrating retaining ring which is connected with a vibrating rope. The system can perform excreta pumping processing on a plurality of groups of aquaculture net cages by utilizing only one excreta pumping machine, and has the characteristics of high excreta pumping efficiency, cost reduction, higher pumping mechanization and automation degree, convenience for the maintenance of the excreta pumping machine, more rational aquaculture structure due to the combination of an inner aquaculture cage and an outer aquaculture cage, and higher environmental friendliness of cage aquaculture and healthier and more scientific aquaculture due to the organic separation of the aquaculture net cage and the fish excreta collector.

Description

technical field [0001] The invention belongs to the field of facility fishery, and in particular relates to a "resource-saving and environment-friendly" mechanized extraction system for fish excrement in bait-casting cages. Background technique [0002] my country is very rich in reservoir resources, with a total water surface of more than 2 million hectares, accounting for 11.5% of the freshwater surface (529 large reservoirs, accounting for 77.8% of the total storage capacity). In 2008, the fish output in the reservoir reached 2.4154 million tons, accounting for about 11.63% of the national freshwater fish output. [0003] At present, cage aquaculture at home and abroad is an intensive breeding method with high input, high output, high risk and high benefit, but the original cage culture often ignores the ecological environment of "resource conservation and environmental friendliness". The principle of aquaculture leads to the eutrophication of the water body caused by th...

AI Technical Summary

Problems solved by technology

[0003] At present, domestic and foreign cage farming aquatic products is an intensive farming method with high input, high output, high risk and high benefit, but the original cage farming often ignores the ecology of "resource saving and environment friendly" Breeding principles lead to eutrophication of the water body due to the fish manure and lost bait produced by feeding cage culture, and nitrogen and phosphorus elements exceed the standard, which affects the virtuous cycle of the ecosystem of the aquaculture water area in the reservoir area and the sustainable and healthy development of the aquaculture industry

If this problem is ignored for a long time, tens of millions of hectares of high-quality aquatic products, large-scale agricultural irrigation and power generation, which can provide high-quality animal protein for human beings, will be wasted.

[0004] In response to the above problems, the applicant applied for a Chinese utility model patent "An Environmentally Friendly and Ecological Aquaculture Cage" (ZL200920169184.9) on August 19, 2009. The fish manure received by the fish manure collector is pumped out by the sewage pump installed in the manure tank, and there is no gap between the fish manure collector and the breeding net cage. A sewage pump is installed in the barrel, which is not efficient in pumping feces, and is very difficult to install and maintain. Due to the large number of net cages, a sewage pump must be installed in each excrement bucket, and the cost is very high. manure, which is very labor-intensive

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