Dust-accumulation-proof fan propeller with reverse-droplet-shaped blades and disk-shaped back plate

Abstract

The invention discloses a dust-accumulation-proof fan propeller with reverse-droplet-shaped blades and a disk-shaped back plate. The fan propeller comprises the propeller back plate, a propeller panel and the blades, wherein the blades are in the shape of a reverse droplet, arranged in the radial direction of a propeller shaft and are in central symmetry; the propeller back plate is in the shape of a disk; the hollow reverse-droplet-shaped blades are connected with the propeller panel and welded to the disk-shaped propeller back plate, so that a propeller body is formed; the propeller panel is provided with an air inlet; the disk-shaped propeller back plate is fixed through rivets and connected with a shaft base; and the shaft base is in matched connection with a fan shaft through a shaft hole. When the fan propeller is in use, because the blades are hollow and in the shape of the reverse droplet, and blade shafts are in radial central symmetry; when the blades rotate at a high speed, the surfaces of the blades have a self-cleaning effect under the action of centrifugal force, dust cannot adhere to the blades due to centrifugal force and does not accumulate, and the dust-accumulation-proof fan propeller is particularly applicable to a wide-impeller large fan which has the large distance between a front end plate and a rear end plate of an impeller, and is particularly high in quantity of needed conveyed air; and due to the disk-shaped back plate, the compressive strength of the fan is improved, and the service life of the fan is prolonged.

Description

technical field [0001] The invention relates to a fan impeller, in particular to an anti-dust fan impeller with reverse drop-shaped blades and a disc-shaped back plate. Background technique [0002] The fan is a power device for gas transportation and has a wide range of applications. However, the airflow in most applications contains a certain amount of dust. When the fan is working, when the airflow passes through the high-speed rotating fan impeller, due to centrifugal separation, the dust particles will be separated. The airflow phase deposits and adheres to the fan impeller. [0003] Since the speed of the fan impeller is generally high, as long as there is a small amount of dust in the airflow, more dust will accumulate after a long time of work, thereby changing the balance of the fan impeller rotation. If the fan impeller has no self-cleaning effect on the dust and is not cleaned in time, it will It will accumulate and gradually change the static and dynamic balance...

AI Technical Summary

Problems solved by technology

Once some hardened dust is shaken off by vibration, it will immediately leave the dynamic rotation balance of the fan, and then generate strong vibration, which may cause serious personnel and equipment safety accidents

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