Single-suction single-stage centrifugal fan with medium-high pressure and medium-large flow

Abstract

The invention discloses a single-suction single-stage centrifugal fan with medium-high pressure and medium-large flow. The single-suction single-stage centrifugal fan comprises a driving motor, a machine shell and an air inlet ring. A main shaft of the driving motor extends into the machine shell and is provided with an impeller. The machine shell is arranged of a volute-shaped structure, the airinlet ring is of a trumpet-shaped structure, and a trumpet opening of the air inlet ring is fixedly installed on the front side of the machine shell. Backward bending type blades are arranged on the end surface of the impeller, each of the blades has an angle inclined from the periphery towards the center of the impeller as viewed from the side end faces, and each blade is bent on the inner side of the impeller to form an-arc shaped flange and enable the center of the impeller to form a trumpet-shaped opening. After adopting the structure, the flow is greatly improved, the flow capacity is greatly improved, the structural design is very compact, the size is small, a production material is saved, the requirements for energy consumption of the fan are met, the space for energy saving is verylarge, an integral support structure is achieved, and the overall structural strength and operational stability are further improved.

Description

technical field [0001] The invention relates to a centrifugal fan, in particular to a single-suction single-stage centrifugal fan with high pressure and medium and large flow. Background technique [0002] Centrifugal fan is a general-purpose equipment widely used. Its main function is to convert electrical energy into wind energy. It has the characteristics of simple structure and convenient manufacture, because its main function is to use wind, that is, the flow of air to meet the needs of various processes, such as ventilation and ventilation. , Dust reduction, drying, cooling, combustion, material transportation, etc., involving all aspects of industry and civil use, with the development of industry and the increasing complexity of modern process routes, the construction of industrial houses and the increase of environmental protection equipment and environmental protection devices , so that the process effect of using low-pressure fans in some original processes is very...

AI Technical Summary

Problems solved by technology

[0002] Centrifugal fan is a general-purpose equipment widely used. Its main function is to convert electrical energy into wind energy. It has the characteristics of simple structure and convenient manufacture, because its main function is to use wind, that is, the flow of air to meet the needs of various processes, such as ventilation and ventilation. , Dust reduction, drying, cooling, combustion, material transportation, etc., involving all aspects of industry and civil use, with the development of industry and the increasing complexity of modern process routes, the construction of industrial houses and the increase of environmental protection equipment and environmental protection devices , so that the process effect of using low-pressure fans in some original processes is very poor, because the resistance of the pipe network increases, and the fans need to overcome the resistance before the fans can effectively do work, and the fans at their performance points can be found in the national standard samples. However, its power distribution is relatively large, and the power consumption is high, which brings a heavy increase in operating costs to customers.

[0003] Fans with suitable design parameters can be selected from the existing national standard samples, and their performance has some deviations in flow and pressure. This deviation is acceptable in process use, but due to problems in the existing fan structure design itself, its The power configuration is generally 45kW ~ 55kW, which is quite different from the requirements. The existing fan structure design is relatively mature, and it is difficult to improve the structure itself. In addition, the operating object is invisible, intangible but unable to regulate its shape. Gas, Therefore, the research process is very complicated, and it usually requires many tests and designs to make slight changes, which has become an existing technical problem. However, based on the requirements of Made in China 2025, high-efficiency products must be available to win the market and win the market. Gain the trust of customers

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