The utility model relates to an active filtering device with a dustproof function, which belongs to the technical field of active filtering equipment, and comprises a box body, a
capacitor assembly, a radiating fin, an IGBT (Insulated Gate Bipolar Translator)
assembly, an
inductance assembly, a fan assembly, a control panel assembly and a sealing element are arranged in the box body, the radiating fin is arranged in the IGBT assembly, and the
inductance assembly is arranged in the box body. The sealing member comprises a terminal board foam, a sealing
sponge strip, a dial switch foam, a
capacitor board
silica gel strip and an IGBT
silica gel strip. After the structure is adopted, the
active filter has the advantages that the protection level of the
active filter is increased, and compared with other products, the
active filter can stably operate under more severe conditions. The air duct is sealed in a glue spraying mode, and compared with glue dispensing or gluing, the glue spraying mode is faster and lower in cost. The sealing mode adopts the sealing foam and the sealing
silica gel strip, compared with the mode of
coating single-component glue, the step of
drying the glue is omitted, the method is suitable for line production, and the silica gel strip has little influence on electronic components compared with the single-component glue.