Jet device for indoor high-density shrimp culture pond, jet type water pushing oxygenation system and using method of jet type water pushing oxygenation system

Abstract

The invention relates to a jet device for an indoor high-density shrimp culture pond, a jet type water pushing oxygenation system and a using method of the jet type water pushing oxygenation system. The jet device comprises a suction piece and a pressure diffusing piece, wherein a water inlet is connected to one end of the pressure diffusing piece, a nozzle is connected to the other end of the pressure diffusing piece, the suction piece is connected to the nozzle in a cooperating manner, a mixing chamber is arranged in the suction piece, the nozzle communicates with the mixing chamber, and atleast part of the nozzle is inserted into the mixing chamber; and the suction piece is of a three-way structure, one end of the suction piece is connected to the pressure diffusing piece, an air inletis formed in the other end of the suction piece, a diffusing pipe is connected to the third end of the suction piece, and the nozzle, the mixing chamber and the diffusing pipe are coaxially arranged.The jet device disclosed by the invention is suitable for the indoor high-density shrimp culture pond, the structure and the performance are both optimized and improved, the gas-water ratio is increased, more and fine bubbles are generated, and the oxygenation efficiency is high; and besides, the jet device also has the advantages of low manufacturing cost, simplicity and convenience in mounting,no maintenance, long service life and the like.

Description

technical field [0001] The invention relates to the field of water body aeration or prawn cultivation, in particular to a jet device for indoor high-density shrimp ponds, a jet-type push water aeration system and a method of use thereof. Background technique [0002] Shrimp farming has developed into a pillar industry of my country's aquaculture industry, among which Penaeus vannamei is the main cultured species. However, in recent years, due to the frequent occurrence of diseases and increasingly prominent problems such as environmental pollution, the traditional external pond shrimp culture models such as earthen ponds and high-level ponds are on the decline, and the aquaculture area and output have been greatly reduced. At the same time, the indoor high-density shrimp farming model is gradually emerging, especially in Shandong and the coastal areas around the Bohai Sea in my country, a large number of greenhouses and cement shrimp ponds in workshops have been newly built ...

AI Technical Summary

Problems solved by technology

Existing technology such as Chinese utility model patent CN204490598U discloses a kind of high-efficiency Venturi ejector, and its product size is relatively large, and the diameter of the small-diameter end of the ejection head just has 20~30mm, is not suitable for small-sized water body, and jet flow is too strong, easy to damage Harm to shrimp farming

Another example is that the Chinese invention patent CN103102021B discloses a high-oxygen jetter, which adopts the unique radiation structure of the multi-spray guns of the small-caliber nozzle, which can improve the jet flow efficiency, but only produces local circulation around the jetter, which is not conducive to the whole aquaculture water body. Concentration and discharge of farming waste

Another example is that the Chinese invention patent CN102887594B discloses a jet device and a plurality of jet devices to make the water flow and increase oxygen. The water pump, the water pipe network, the air supply pipe and the jet are all arranged on the water surface or in the water body. And facilities need to be fixed in the water with buoys, etc., which brings inconvenience to operation and maintenance

Moreover, when the device and facility are operating in the water body, the impact force of the water flow generated in the pipeline may wear or damage the water pipe network or the air supply pipe. When the water pump is turned off and the operation is stopped, the ejector may be blocked by the breeding waste. These situations All will cause hypoxia in the water body, which will directly lead to the failure of breeding.

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