Large vertical direct-connected umbrella flow centrifugal fan for industrial dust removal

Abstract

The invention relates to a large vertical directly-connected volute-free umbrella flow centrifugal fan special for industrial dedusting, which is a special matched device for an industrial smoke dust pollution treatment dedusting system, is integrally of a vertical structure, and comprises an electromotor 1, an engine base 2, a centrifugal-type impellor 3 and a current collector 4 sequentially from top to bottom; the engine base 2 is of the structure of a large flange disc and a cylinder body with grids (11), with the diameter greater than that of the centrifugal-type impellor 3; the centrifugal-type impellor 3 is installed at the shaft extending end at the lower part of the electromotor 1, shares one shaft and one group of bearings with the electromotor 1; a coupler, a belt disc, bearing seats and the like in the traditional linking method are omitted; the whole machine is installed on the top of a deduster through the engine base 2; the current collector 4 is in direct connection with an air purifying cabin 10 of the deduster; gases purified by a dedusting system enter the centrifugal-type impellor 3 through the current collector 4, and then air flows out in an umbrella-shaped mode along the centrifugal-type impellor 3 at 30 degrees axially and 360 degrees radially. According to the invention, the horizontal-type structure of the traditional large centrifugal fan is changed thoroughly; a blank in the technical field of the large vertical directly-connected umbrella flow centrifugal fan special for industrial dedusting in China is filled up, and the large vertical directly-connected volute-free umbrella flow centrifugal fan special for industrial dedusting has the advantages of novel and compact structure, no occupation of land, high flow rate, low noise, no surge, umbrella-type air outlet type, convenience in installation and maintenance and the like.

Description

technical field [0001] The invention relates to a large vertical direct-connected umbrella flow centrifugal fan specially used for industrial dust removal, belonging to the technical field of dust removal. Background technique [0002] At present, the large centrifugal fans (above 100KW) commonly used in dust removal systems for controlling industrial smoke pollution are all horizontal structures and are usually installed on the ground. The independent fans and motors are driven by couplings, water-cooled or oil-cooled bearing seats and other supporting connection devices to provide negative pressure for the entire dust removal system. The dust collector needs to be connected with the fan through pipelines, which has problems such as high system resistance, high steel consumption, many supporting equipment, and large floor space. At the same time, the volute of the traditional centrifugal fan is involute, which contributes to increasing the static pressure of the fan and ch...

AI Technical Summary

Problems solved by technology

The dust collector needs to be connected with the fan through pipelines, and there are problems such as high system resistance, high steel consumption, many supporting equipment, and large floor space.

At the same time, the volute of the traditional centrifugal fan is involute, which contributes to increasing the static pressure of the fan and changing the direction of the wind, but also causes a large resistance loss, consumes a lot of energy, and provides a relatively small air volume. , the problem of low efficiency

One of the effective ways to solve the above problems is to design a high-efficiency centrifugal fan that can be installed vertically on the top of the dust collector and directly connected with the dust collector, but this technology is still blank

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