Backward-tilting multi-wing centrifugal ventilator

Abstract

The invention discloses a backward-tilting multi-wing centrifugal ventilator. The backward-tilting multi-wing centrifugal ventilator comprises a ventilator main body, wherein an explosion-proof motoris fixedly arranged on the outer surface of one side of the ventilator main body; a worm board is arranged at one side of the explosion-proof motor; a current collector is arranged inside the worm board; an impeller is fixedly arranged inside the current collector; a rotating shaft is arranged at the center inside the impeller; in addition, fan wings are fixedly arranged on the outer surface of the rotating shaft; a vertical baffle is fixedly arranged at the center of the outer surface at one side of each fan wing; a connecting port is formed in the upper end of the outer surface of one side of the worm board; an operation box is arranged on the outer surface of one side, close to the connecting port, of the worm board. The backward-tilting multi-wing centrifugal ventilator disclosed by the invention is provided with the vertical baffles, a dust outlet and a filtering plate; a suction force and a centrifugal force can be improved and an operation process is facilitated; in addition, air can be filtered and finally dust can be collected and discharged, so that a dust raising effect is effectively avoided and a better use prospect is brought.

Description

technical field [0001] The invention relates to the field of multi-blade centrifugal fans, in particular to a backward inclined multi-blade centrifugal fan. Background technique [0002] The multi-blade centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. According to the principle of converting kinetic energy into potential energy, the high-speed rotating impeller is used to accelerate the gas, then decelerate and change the flow direction to convert kinetic energy into potential energy. In a single-stage centrifugal fan, the gas enters the impeller from the axial direction, changes direction as the gas flows through the impeller, and then enters the diffuser. In a diffuser, the gas changes direction of flow causing a deceleration, which converts kinetic energy into pressure energy. The increase in pressure occurs mainly in the impeller and secondarily in the diffusion process. In th...

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Problems solved by technology

In the multi-stage centrifugal fan, the reflux device is used to make the airflow enter the next impeller to generate higher pressure; the existing multi-blade centrifugal fan has certain disadvantages in use. First of all, in the process of operating ventilation, it cannot Effectively increase the wind speed and centrifugal force, thereby improving the ventilation efficiency, and can filter the air, and finally can effectively remove dust and avoid dust. The operation is more troublesome, which has brought a certain impact on people's use. Multi-wing centrifugal fan

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