Dust collector for energy-saving environment-friendly axial flow fan group

Abstract

A dust collector for an energy-saving environment-friendly axial flow fan group. A sidewall of a casing is equipped with an air-supply pipe, which directly penetrates into the casing; more than two air outlets are arranged on the end face of the casing; each air outlet is installed with an axial flow fan; the rotating shaft of each axial flow fan is provided with more than one impellers for generating high pressure effect through progressive increase of wind pressure of the fan; filter bags are arranged opposite to corresponding axial flow fans; the upper end of each filter bag is fixed on a separator plate with through holes in the casing; a dust bucket and a dust box are arranged below the filter bags corresponding to each axial flow fan; the separator plate and the air outlet keep a distance of 1-3 m, and the space above the separator plate forms a cleaning chamber; each axial flow fan runs in a process of forward rotation, stop, reverse rotation, stop and forward rotation; and the axial flow fans carry out cycling air-discharge and dedusting procedure in turns. The forward rotation induces air to dedust, the reverse rotation conducts back flushing ash removal with large air quantity, so as to substantially reduce filtering resistance and maintain the dust thickness in the filter bags within 0.5 mm for a long time, reduce power consumption for dedusting, thoroughly omit auxiliary facilities including a high pressure recoil pipe, a gas tank, a pulse valve and an air compressor, and realize a total energy saving of 70-80%.

Description

technical field [0001] The invention relates to a dust removal device, in particular to an energy-saving and environment-friendly axial flow fan unit dust removal device widely used in metallurgy, chemical industry, steel, thermal power plants, cement, coking, chemical fertilizer, glass factories and other large energy-consuming industries. Background technique [0002] With the strengthening of people's awareness of environmental protection, people hope to improve air quality and reduce the emission of air pollutants and haze weather. For this reason, the Ministry of Environmental Protection of the People's Republic of China has formulated emission standards for each pollutant emission unit, and also requires the implementation of rectification within a time limit. [0003] Fans and dust collectors are essential components for the implementation of pollution control projects, but traditional dust removal fans are mostly centrifugal fans, which cannot produce high-pressure ef...

AI Technical Summary

Problems solved by technology

The traditional pulse dust removal requires auxiliary facilities such as air compressors, air storage tanks, pulse valves, etc., which not only increases the investment in equipment but also increases energy consumption, and the power of the air compressor is 8% of the total power of the entire dust removal part. ~30%, so some existing dust removal devices are far from the dust removal effect required by the national standard, let alone the standard required by the ecological city

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