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进口高速离心鼓风机哪家品牌好

进口高速离心鼓风机Product Description:

The utility model belongs to the technical field of machinery. Aiming at the problems of small flow regulation range and poor working stability of the blower in the prior art, a high-speed centrifugal blower is provided, which includes a volute, an impeller is arranged in the volute, the impeller is connected with the driving mechanism, the impeller is provided with blades, the volute is also provided with a diffuser, and also includes an outer casing, the outer casing is arranged on the air inlet side of the impeller, the outer casing is provided with an inner casing, and a reflux groove is arranged between the outer casing and the inner casing, One end of the reflux groove is connected with the wheel cover at the top of the blade, and the other end faces the inlet end of the impeller. The flow rate at the inlet of the impeller is increased through the setting of the reflux groove, so the blade attack angle is reduced, the load is reduced, and the surge phenomenon is delayed; Effectively reduce the airflow blockage, broaden the stable working range of the blower, expand the flow regulation range of the blower unit, and meet the working conditions with greater changes.

characteristic:

进口高速离心鼓风机 

High speed centrifugal blowers are widely used in sewage treatment, desulfurization and denitration, chemical industry, steel and other industrial fields. The centrifugal blower with fixed geometry and fixed speed has a constant working characteristic line. When the working flow is larger than the flow at the design point to a certain extent, the performance of the blower will deteriorate sharply, and the pressure rise and efficiency will be greatly reduced, which is called blocking condition; When the working flow is smaller than the flow at the design point to a certain extent, the flow and exhaust pressure of the blower fluctuate periodically with low frequency and large amplitude, and the unit vibrates violently, which is called surge. Some applications, such as sewage aeration, have high requirements for the stable working flow range and the flow regulation capacity of the blower. At present, there are two ideas to broaden the stable working range of the blower. One is to reduce the flow at the surge boundary point for the centrifugal blower with fixed geometry and fixed speed, which is referred to as stability expansion. At present, the technologies studied are organic casing treatment, tip air injection, plasma control and other technical means, of which the casing treatment is relatively prominent with less cost and obvious effect; The other is the idea of changing the geometry and speed. Changing the speed means changing the input speed of the impeller. The means of changing the geometry mainly include adjustable inlet and outlet guide vanes, diffuser with adjustable throat area, vaneless diffuser with variable width, etc. these technical means have achieved obvious flow regulation effect, but the corresponding structure is complex, the control difficulty increases, and the unit cost increases.

进口高速离心鼓风机Principle:

A reflux groove is set between the inner and outer casings. One end of the reflux groove is connected with the wheel cover on the top of the blade, and the other end faces the inlet end of the impeller. The load on the top of the blade gradually increases during operation, and the pressure at the rear of the blade is higher. The setting of the reflux groove can make some low kinetic energy fluids automatically enter the reflux groove for reflux, and then converge with the mainstream at the inlet end of the impeller, increasing the flow at the inlet of the impeller, thus reducing the attack angle of the blade, The load is reduced, the surge phenomenon is delayed, the flow regulation range is wide, and the structure is simple;

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