Dust collector

Abstract

A dust collector includes a collection unit including a suction pipe and a Roots blower outwardly discharging the air having passed through the collection unit. The collection unit further includes a rotational shaft rotatably mounted in a housing of the case and disposed so as to face an interior of the case, a rotary filter mounted on the shaft and including a cylindrical porous core and a filter material attached to an outer circumference of the core and having a number of folds made of nonwoven cloth with a mesh into a continuous zigzag shape, an air blower nozzle blowing on an outer surface of the rotary filter pressure air produced by drive of the blower in a reverse direction thereby to clean the filter, and a recovery bag accommodating the dust or the like removed from the rotary filer during cleaning by the air blower nozzle.

Description

technical field

[0001] The present invention relates to fumes (fume) generated during arc welding operations, fine dust and mist (mist) generated by cutting machines, grinding machines, etc., carbon powder (carbon) generated when road sweepers clean roads, Dust collectors for collecting and recovering oil and dust, fine dust generated in the process of producing edible materials such as flour, and non-sticky light dust generated in the processing of plastics, paper, and wood Object dust collection device. Background technique

[0002] (1) When arc welding a welding iron material coated with antirust oil or paint, fine fume of 100 angstrom level or viscous fine fume of 0.01 μm to 1 μm is generated. In general filter-type dust collectors, although filters with meshes of 0.1 μm to 0.5 μm are used, clogging of the meshes tends to occur. Therefore, a dust recovery method has been developed in which a mixture in which lime powder and the like are mixed in compressed air generate...

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