High-power fan inlet filtering device capable of being replaced on line

A high-power fan inlet filtering device capable of being replaced on line comprises a filter body arranged at an air blower inlet, an air inlet of the filter body is covered with a rainproof cover, and filtering plates are arranged on the periphery of the air inlet of the filter body. The continuous operation of a gasification device can be ensured, and a filter screen can be directly replaced on line; the filter plate is designed to be separated from the filter body, so that the inspection and maintenance flexibility is greatly improved, and the disassembly and the installation are convenient; the filter plate adopts a new design concept, so that the filter element can be quickly replaced, and the condition that the filter plate cannot be used due to repeated cleaning and damage of the filter element is avoided; a filter plate track is designed, so that the pull-type loading and unloading functions of the filter plate are realized; and the air inlet area is increased, and the air inlet amount is increased. 本