Straight through jet aerator

Abstract

The invention belongs to the technical field of aquaculture machinery, and in particular relates to a straight through jet aerator, which mainly comprises a main engine, a floating body mechanism and a waterproof cover, wherein the main engine is a hollow ventilation shaft motor; a motor shaft is connected with a hollow shaft through a coupler; a jet pipe is arranged outside the hollow shaft; theupper end of the jet pipe is connected with a flange of the motor, and the lower end of the jet pipe supports the hollow shaft through a water lubricated bearing; an axial flow impeller is arranged on a hollow shaft at the lower end of the hollow shaft; a main shaft of the hollow ventilation shaft motor is a hollow main shaft; a bearing is arranged between a shell and the main shaft; a stator is fixed on the shell; a lower end cover of the shell is provided with a flange; the lower end of the main shaft extends out of one end of the flange; the floating body mechanism is more than one hollow blow-molded floating pontoon which is provided with a supporting seat; the supporting seat is provided with a U-shaped groove; and a supporting post of the motor is arranged in the U-shaped groove.

Description

technical field [0001] The invention belongs to the technical field of aquaculture machinery, in particular to a straight-through jet flow aerator. Background technique [0002] The aerator is a life-saving and stimulating equipment for fish and shrimp in aquaculture. Existing mechanical aerator mainly contains three types of water wheel type, impeller type and water spray type, also has a kind of jet type aerator. One of the jet-type aerators uses a pontoon to float the motor and the jet tube. There is a hollow shaft in the jet tube connected to the motor to rotate together, driving the impeller to make the water flow at a high speed to form a negative pressure, and the air is sucked into the water to increase the dissolved oxygen in the water, preventing Fish and shrimp float their heads due to lack of oxygen. However, in the existing jet flow aerators, the motor shaft drives the impeller through the hollow shaft. There is a connecting sleeve between the motor and the ho...

AI Technical Summary

Problems solved by technology

However, in the existing jet flow aerators, the motor shaft drives the impeller through the hollow shaft. There is a connecting sleeve between the motor and the hollow shaft, and the connecting sleeve seals the end of the motor shaft. Due to the strength of the hollow shaft, the air inlet should not be too large, which will affect the air intake effect; there are also coupling claws on the active part, and the passive part of the coupling has holes corresponding to the claws on the active part. On the hollow shaft, the active part and the passive part have air intake space, and the coupling of this aerator is unreliable

Other couplings with reliable structure are relatively complicated. The above-mentioned structure is also because the air flow enters the hollow shaft after bending, so the air flow is not smooth.

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