Synchronous regulating device with inlet guide blades for high-speed centrifugal fan

Abstract

The invention relates to a synchronous regulating device with inlet guide blades for a high-speed centrifugal fan, which comprises the guide blades, rotating arms, pin shafts, spheres, roller wheels, a rotating ring and a driving arm. Shaft necks of the guide blades are respectively installed in shaft holes uniformly distributed in the circumference at the upper part of an inner worm case to form a first rotating pair; one end of each rotating arm is fixedly connected with the shaft neck of each guide blade through a key, and the other end of the rotating arm is provided with a U-shaped groove and is connected with each sphere to form a spherical motion pair; the spheres are respectively and fixedly arranged in shaft holes uniformly distributed in the circumference of the rotating ring through the hinged shafts; shaft necks of the roller wheels are respectively installed the shaft holes uniformly distributed in the lower part of the inner worm case and form a second rotating pair; and the internal diameter of the rotating ring is respectively tangential to each roller wheel and forms a third rotating pair; and the driving arm is fixedly connected with the rotating ring through a bolt. The synchronous regulating device has the advantages of simple, compact and reasonable structure and low manufacturing cost and is suitable for high-speed centrifugal fans with various specifications.

Description

Technical field [0001] The invention relates to a synchronous adjustment device, in particular to a mechanical device for synchronously adjusting the angle of inlet guide vanes on a high-speed centrifugal fan, belonging to the technical field of mechanical structures. Background technique [0002] In the prior art, high-speed centrifugal fans can maintain high-efficiency operation even when the flow rate is changed by adjusting the inlet guide vanes. The adjustment of the guide vanes is generally realized by gears, sprocket drives, etc., which has complex structure and manufacturing cost. high. Summary of the invention [0003] The purpose of the present invention is to overcome the above shortcomings, thereby providing a synchronous adjusting device for the inlet guide vanes of a high-speed centrifugal fan, which has a simple structure and low manufacturing cost. [0004] According to the technical solution provided by the present invention, a synchronous adjustment device for the...

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Problems solved by technology

[0002] In the prior art, the high-speed centrifugal fan can maintain a high efficiency operation when the flow rate is changed by adjusting the inlet guide vane. The

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