Pore-adjustable rotary-rod type bottom blowdown device for shrimp breeding pond

Abstract

The invention belongs to the field of aquaculture engineering, and particularly relates to a pore-adjustable rotary-rod type bottom blowdown device for a shrimp breeding pond. The two ends of a bend are communicated with one end of a drainage pipeline B and a drainage pipeline A respectively, and the other end of the drainage pipeline B is connected with a pinch plate; the bend is provided with aninternal threaded pipe, a vertical shaft passes through the internal threaded pipe, one end of the vertical shaft is a free end, the other end of the vertical shaft is rotatably connected with a chassis, and a vertical-shaft external threaded section forming a helical pair with the internal threaded pipe is arranged on the vertical shaft; the chassis is placed on the bottom surface of the shrimpbreeding pond, lifting of the bend, the drainage pipeline A, the drainage pipeline B and the pinch plate are achieved by rotating the vertical shaft, and thus the size of a sewage discharge pore formed between the lower end of the outer edge of the pinch plate and the bottom face of the shrimp breeding pond is adjusted; the outer edge of the pinch plate is provided with a living shrimp anti-escapetooth for preventing living shrimps from getting close to the sewage discharge pore. According to the size of the living shrimps, the size of the sewage discharge pore in the bottom of the shrimp breeding pond can be adjusted conveniently, sewage discharging is facilitated while the living shrimps are prevented from escaping.

Description

technical field [0001] The invention belongs to the field of aquaculture engineering, in particular to a bottom sewage discharge device for a rotary rod type shrimp pond with adjustable pores. Background technique [0002] In order to efficiently discharge dirt such as shrimp shells, dead shrimp, and residual bait feces during the prawn breeding process, an intermittent return water process (such as disclosed on September 22, 2017, the publication number is CN107182893A, and the invention name is "a circulating water Intermittent return water device and its return water process for aquaculture system"). When adopting this technology to raise shrimps, when the intermittent return water is turned on, the live shrimps will be sucked out together with the shrimp shells and dirt into the live shrimp escape prevention frame due to the strong suction of the sewage suction port (see 2019 for the live shrimp escape prevention frame) It was published on March 12, 2010, the publicatio...

AI Technical Summary

Problems solved by technology

The publication number is CN109452215A, which discloses a "device and method for removing dirt and preventing live shrimp from escaping in the circulating water shrimp farming system", which is suitable for sewage discharge in rectangular shrimp farming ponds, and does not have the function of pore adjustment

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