Device for preventing hot air from being reflowed in waterproof cover of aerator and waterwheel-type aerator

Abstract

The invention belongs to the technical field of aerators and relates to a waterwheel-type aerator with a device for preventing hot air from being reflowed in a waterproof cover. A motor is vertically arranged and a cooling fan is arranged at the upper end of the motor; a fan cover is arranged outside the cooling fan; the waterproof cover is arranged outside the motor; a separation device for preventing the hot air of the motor from being upwards reflowed into the fan cover of the motor is arranged between the waterproof cover and the motor, so that the hot air formed by carrying out heat exchange on cooling air and a heat radiation fin is not reflowed back to the fan cover of the motor; the temperature of the motor is greatly reduced and the load is increased by utilizing a function that the size of a buckling-type impeller is adjustable, so that the aerator can work at a high frequency point. The waterwheel-type aerator manufactured by the buckling-type impeller utilizes leftward spire and rightward spire to form an impeller with blades which are staggered in a ladder shape to form a spiral shape, so that a water flow formed by a flow pushing effect is dispersed in a splay shape when the aerator works and the oxygenation effect is easy to express.

Description

technical field [0001] The invention relates to an aerator, in particular to a waterwheel type aerator with a device for preventing hot air backflow in a waterproof cover. Background technique [0002] The aerator is a life-saving and boosting equipment for fish and shrimp in aquaculture. The existing mechanical aerators mainly include waterwheel type, impeller type and water spray type. Among them, the waterwheel type aerator is used more wide. Most of the original water wheel aerators use air-cooled motors, and the motors are equipped with waterproof covers. In order to cool the motors, the waterproof covers are higher than the fan blades of the motors. The motor can be cooled by air, but this cooling wind is inside the cover. Circulation, in order to make the steam evaporated on the water surface have a rising channel, some waterproof covers have air outlet holes, which can discharge the water vapor in the cover when the aerator is not working, and cannot cool down the m...

AI Technical Summary

Problems solved by technology

Most of the original water wheel aerators use air-cooled motors, and the motors are equipped with waterproof covers. In order to cool the motors, the waterproof covers are higher than the fan blades of the motors. The motor can be cooled by air, but this cooling wind is inside the cover. Circulation, in order to make the steam evaporated on the water surface have a rising channel, some waterproof covers have air outlet holes, which can discharge the water vapor in the cover when the aerator is not working, and cannot cool down the motor when it is working Therefore, the heat dissipation condition of the existing water wheel aerator is not good, and the motor cannot work at full load, especially the bearing in the upper end cover of the motor is relatively easy to be damaged

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