High-efficiency energy-saving single-stage high-speed centrifugal blower

Abstract

The invention relates to a high-efficiency energy-saving single-stage high-speed centrifugal blower which comprises a high-speed gear case, a spiral case, an impeller, an air inlet body, an inlet guide vane and an inlet guide vane adjusting mechanism and is characterized by also comprising a plurality of outlet guide vanes and an outlet guide vane adjusting mechanism, wherein the plurality of outlet guide vanes are installed in the corresponding axle holes on the high-speed shaft end flange of the high-speed gear case and are evenly distributed in the radial direction, and the outlet guide vane adjusting mechanism is arranged on the shafts of the outlet guide vanes. The centrifugal blower provided by the invention has the advantage of compact and reasonable structure; the impeller is of an entire ternary structure with primary blades and secondary blades and is made of a small quantity of aluminum alloy, thus the efficiency is further improved; and simultaneously the inlet guide vane and the outlet guide vanes have wider flow adjustable ranges and maintain higher continuous adjustment efficiency within a range of 40%-100% of the rated flow, thereby being adaptable to the flow requirements under different working conditions and achieving the purpose of omnidirectional energy conservation.

Description

technical field [0001] The invention relates to a high-efficiency and energy-saving single-stage high-speed centrifugal blower, specifically an energy-saving blower with higher efficiency and a wider flow adjustment range improved on the basis of a single-stage high-speed centrifugal blower, which belongs to the mechanical structure technology field. Background technique [0002] At present, the main technology of the domestic single-stage high-speed centrifugal blower used in the sewage treatment aeration system comes from the technology imported from advanced countries in the 1980s. The impeller used in this type of product is not a full three-way impeller. blades, the energy loss is relatively large, and the efficiency is low; at the same time, only the inlet guide vane of this type of product is adjustable, while the outlet guide vane is fixed, and the flow adjustment range is generally 70%-100% of the rated flow, which cannot meet It is difficult to achieve the ideal ...

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Problems solved by technology

[0002] At present, the main technology of the domestic single-stage high-speed centrifugal blower used in the sewage treatment aeration system comes from the technology imported from advanced countries in the 1980s. The impeller used in this type of product is not a full three-way impeller. blades, the energy loss is relatively large, and the efficiency is low; at the same time, only the inlet guide vane of this type of product is adjustable, while the outlet guide vane is fixed, and the flow adjustment range is generally 70%-100% of the rated flow, which cannot meet It is difficult to achieve the ideal energy-saving effect due to the flow requirements under different working conditions

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