Motor direct-drive type movable vane adjustable or shutdown one-time adjustable axial flow fan

Abstract

The invention discloses a motor direct-drive type movable vane adjustable or shutdown one-time adjustable axial flow fan . The motor direct-drive type movable vane adjustable or shutdown one-time adjustable axial flow fan comprises an axial flow fan body and a motor, the motor is in transmission connection with the axial flow fan body, and the motor drives the axial flow fan body to operate; and the motor comprises a rotating shaft and a shell which can rotate relatively, and a bearing structure is arranged between the rotating shaft of the motor and the shell of the motor to bear loads generated when the axial flow fan body operates. The bearing structure comprises a radial bearing and an axial bearing which are respectively used for bearing a radial load and a bidirectional axial load. By the arrangement, the bearing structure is arranged on the rotating shaft of the motor to replace a bearing box in the prior art so as to bear the radial load and the bidirectional axial load, so that a shafting structure of the axial flow fan body is simplified; the axial flow fan body is directly connected with the rotating shaft of the motor, so that the shafting centering between the bearingbox and the motor is omitted, and the shafting centering requirement is lowered; and the requirement for the stability of a civil engineering foundation is lowered, the construction period is favorably shortened, and the construction cost is reduced.

Description

technical field [0001] The invention relates to the technical field of ventilation, in particular to a motor direct-driven axial flow fan with adjustable blades or one stop. Background technique [0002] Due to its reasonable load distribution, safety and stability, and high blade efficiency, the blade angle can be adjusted automatically at any time during operation or the air volume can be adjusted once it is stopped. Axial flow fans are widely used in power plants, mines, metallurgy and Petrochemical and other industries are popular. When the movable blade is adjustable or the adjustable axial flow fan is stopped once, the impeller will generate radial load and aerodynamic axial load (two-way) of its own weight. If the impeller is directly hung on the shaft end of the drive motor, the drive motor will The design of the bearing does not consider the special application load, which greatly reduces the service life, and the power plant, coal mine, metallurgy, petrochemical a...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems existing in the related art at least to a certain extent, the present application provides a motor direct-driven axial flow fan with adjustable rotor blades or once-stop adjustable, which can solve the problem of reducing the When the failure rate of the adjustable axial flow fan is adjusted once, the structure is complex, the shaft alignment is high, and the stability of the civil foundation is high.

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