Improved axial flow fan

Abstract

The invention relates to an improved axial flow fan, comprising an axial flow fan body and an adjusting device. The axial flow fan body comprises a shell, a support, a motor, a rotary drum and blades; the support is installed at the lower end of the shell; the lower end of the support is connected with the ground; the motor is installed in the shell; the rotary drum is installed at the front end of the motor through a bearing; a plurality of blades are evenly arranged on the outer wall of the rotary drum in the circumferential direction of the rotary drum; a cavity is formed in the rotary drum; an adjusting device is installed in the cavity, and the lower ends of the blades are connected with the adjusting device. Through cooperation of a knob, a third gear, a second gear, a worm rod, and a first gear in the adjusting device of the invention, the angle of the blades can be adjusted; when the distance between the blades is increased, the flow of the axial flow fan is increased, otherwise, the flow is decreased, and therefore the effect that the air flow is controlled by adjusting the angle of the blades can be achieved.

Description

technical field [0001] The invention relates to the technical field of axial flow fans, in particular to an improved axial flow fan. Background technique [0002] Axial flow fans are very widely used, such as electric fans and air conditioner external fans are axial flow fans. Composed of impeller and casing, the structure is simple but the data requirements are very high. Ordinary axial flow fans can be used for ventilation in general factories, warehouses, offices, residences, etc., and can also be used for air coolers (air coolers) and evaporators. , condenser, spray drop, etc., there are also mining axial flow fans, anti-corrosion and explosion-proof axial flow fans adopt anti-corrosion materials and explosion-proof measures, and match explosion-proof motors, which can be used to transport explosive, volatile and corrosive gases , the improved axial flow fan is an improved axial flow fan based on the ordinary axial flow fan, so the performance of the improved axial flow...

AI Technical Summary

Problems solved by technology

[0003] 1. The blades and the rotor of most existing improved axial flow fans are usually in one structure. When the blades are damaged, the blades and the rotor need to be disassembled for maintenance, which not only easily reduces the maintenance efficiency, but also easily Circumstances that result in material waste;

[0004] 2. The angle of the blades of most of the existing improved axial flow fans cannot be adjusted, so the distance between the blades is constant, so that customers who own the improved axial flow fans cannot adjust the axial flow fan according to actual needs. Make corresponding adjustments in a timely manner due to the ventilation flow rate, making the improved axial flow fan not very practical

Images