Device for preventing hot air from flowing back in water shield of aerator and impeller aerator

Abstract

The invention belongs to the technical field of aerators, and relates to an impeller aerator provided with a device for preventing hot air from flowing back in a water shield. A motor is arranged in a shell consisting of a conical body and the water shield; a supporting base of the motor is connected with the shell; a motor shaft is connected with an impeller shaft and vertically extends into water downward; a motor body is positioned over the horizontal pane; an isolation device for preventing the hot air of the motor from upward flowing back and entering a fan guard of the motor is arranged between the water shield and the motor so as to ensure that the hot air formed after the heat exchange of a cooling fan and radiating fins is not returned to the fan guard of the motor and the temperature of the motor is greatly reduced; the supporting base is connected with supporting rods; and the other end of each of the supporting rods is provided with a floating body respectively. The complete machine floats on the water surface to work through the floating bodies, and a water body lifted by an impeller is guided to various directions by using the conical body so as to ensure that lower-layer water fills a vacancy, so that the aim of oxygen increase is fulfilled through the convection of the water body. Structures such as gears, reduction gearboxes and the like which are required in the prior art are abandoned, lubricating oil is not required to be filled, the oil leakage is effectively prevented from polluting fishing ponds, and the production cost is reduced.

Description

technical field [0001] The invention relates to an aerator, in particular to an impeller type aerator with a device for preventing hot air backflow in a waterproof cover. Background technique [0002] The aerator is a life-saving and stimulating equipment for fish and shrimp in aquaculture. The existing mechanical aerators mainly include three types: waterwheel type, impeller type and water spray type. The existing aerator motor has waterproof Cover, the air circulation or part of the air circulation in the waterproof cover, the heat dissipation condition is not good, the motor cannot work at full load, especially the bearing in the upper end cover of the motor is relatively easy to damage; the existing impeller aerators have gears The deceleration mechanism has complex structure, heavy weight and high cost. Contents of the invention [0003] The purpose of the present invention is to solve the deficiency of the existing aerator, and provide a device and an impeller type ...

AI Technical Summary

Problems solved by technology

[0002]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 sprayer type. There are three types of water type. The existing aerator motor has a waterproof cover, and the air in the waterproof cover circulates or part of the air circulates inside. The heat dissipation condition is not good, and the motor cannot work at full load, especially the bearing in the upper end cover of the motor. Relatively easy to damage; the existing impeller type aerators all have gear reduction mechanisms, which are complex in structure, heavy and costly

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