Dust filter - with cloth element for industrial use

摘要

Dust filter for use in industrial processes has a tubular filter element of cloth. to provide an increased surface area. The cloth is shaped into a series of regular sinusoidal waves before bending into a generally sinusoidal form. It may be kept in shape by an inner and outer ring of metal wires over which the cloth is stretched. The area of the filter may be further increased by having a second corrugated cloth tube inside the first, in this case the dust laden air enters the annular space between the tubes.