Low-noise type small centrifugal fan with self-cleaning structure

Abstract

The invention discloses a low-noise type small centrifugal fan with the self-cleaning structure. The centrifugal fan comprises a volute, an air collecting cover, an air outlet, a shaft rod, a piston cylinder and a water cooling tank, wherein the volute serves as a device main shell to be placed on the ground, and a motor is fixedly installed on the side wall of the volute; the air collecting cover is movably installed on the inner side of an air inlet, and a dust screen is fixedly installed on the inner side of the air collecting cover through bolts and used for filtering dust, impurities and the like in air; the air outlet is formed in the outer side of the volute; the shaft rod is fixedly arranged on the side wall of the volute; the piston cylinder is fixedly mounted on the side wall of the volute; and the cooling water tank is fixedly installed on the outer side of the upper portion of the air outlet. According to the low-noise type small centrifugal fan with the self-cleaning structure, efficient noise reduction can be conducted through a noise reduction air bag with the uneven surface, a blocked dustproof net can be automatically cleaned through the wind force, the air inlet rate is increased, meanwhile, the motor can be efficiently cooled in the using process, it is guaranteed that the device can operate for a long time, and high practicability is achieved.

Description

technical field [0001] The invention relates to the technical field of centrifugal fans, in particular to a low-noise small centrifugal fan provided with a self-cleaning structure. Background technique [0002] Centrifugal fan is a kind of machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is widely used in ventilation, dust removal and cooling systems of factories, mines, tunnels, ships and buildings. However, existing centrifugal fans are still There are some deficiencies. [0003] Such as the protective cover device of a centrifugal fan whose publication number is CN111997941A, it installs structures such as a biaxial motor, a hydraulic cylinder, a cleaning pendulum, a runner, a first bevel gear, and a second bevel gear, wherein the biaxial motor drives the first When the first gear rotates, when the protective cover is automatically assembled inside the air inlet cylinder, the output shaft of the hydraulic cylinder is extended,...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a low-noise small centrifugal fan with a self-cleaning structure, so as to solve the problems that the small centrifugal fans on the market are inconvenient to automatically clean the filter screen structure and use the noise relatively loudly.

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