Double-arc continuous concentration and sewage discharge device and method for shrimp farming system

Abstract

The invention discloses a double-arc continuous concentration and sewage discharge device and method for a shrimp farming system. The device is characterized by comprising at least two symmetrically-arranged sewage collecting pipes, the opening ends of the sewage collecting pipes are located in the center of the bottom of a culture pond, and one end, close to the wall of the culture pond, of each sewage collecting pipe communicates with the bottoms of gas stripping pipes; a transverse pipe communicating with the gas stripping pipes is arranged between the two gas stripping pipes and located on the water surface of the culture pond, a detachable thick arc-shaped screen cloth bent towards the transverse pipe is arranged on the side, close to the wall of the culture pond, of the outer wall of the transverse pipe, and a long-strip-shaped hole is formed in the pipe wall of the transverse pipe and located in the area of the thick arc-shaped screen cloth; and a collecting tank is arranged between the bottom of the thick arc-shaped screen cloth and the bottom of the transverse pipe, a detachable thin arc-shaped screen cloth used for filtering water filtered by the thick arc-shaped screen cloth is arranged below the thick arc-shaped screen cloth, and a collecting hopper is arranged at the triangular bottom of the thin arc-shaped screen cloth. The device has the advantages that shrimp shells, dead shrimps, and diseased shrimps with poor vitality can be separated in time, residual feeds and excrement are concentrated and then discharged, and the sewage discharge water consumption is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a double-arc continuous concentrated sewage discharge device and method for a shrimp farming system. Background technique [0002] In the shrimp farming system, in order to ensure that the farming system maintains a good water quality environment, it is necessary to promptly discharge residual bait, feces, shrimp shells, dead shrimp and other dirt from the farming system. The basic form of the shrimp breeding sewage system is to promote the rotation of water flow, so that all kinds of sewage are collected near the sewage outlet at the center of the bottom of the pot bottom, and then under the action of water pressure difference, the sewage is discharged from the cultivation system through the sewage pipe. An anti-escape net needs to be installed at the sewage outlet to prevent live shrimp from being discharged, but it also makes it difficult to discharge shrimp sh...

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Problems solved by technology

The devices proposed by these two inventions can collect shrimp shells, dead shrimp, and diseased shrimp with poor vigor to prevent overflow and escape of shrimp, but the overall structure of the sewage collector is relatively complicated, and residual bait and feces need to be connected to subsequent separation The device is further separated and processed, and can only be used in a circulating aquaculture system. A series of auxiliary equipment such as water pumps are needed in the follow-up, and the input cost and energy consumption are high, which is difficult for ordinary farmers to bear.

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