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A self-cleaning impingement type air filter unit is mounted on a flexible elastomeric support member comprising an end wall of a filter housing exposed to the pressure differential between the interior housing chamber and the ambient pressure of the clean air discharge conduit. A standard pleated pa

A self-cleaning impingement type air filter unit is mounted on a flexible elastomeric support member comprising an end wall of a filter housing exposed to the pressure differential between the interior housing chamber and the ambient pressure of the clean air discharge conduit. A standard pleated paper type porous media filter element is mounted on the flexible wall member and includes a support plate on which a mechanical vibrator is mounted whereby the complete filter element is mechanically oscillated to dislodge accumulated material on the surface of the filter media. The filter support structure includes a mounting flange which is adapted to be supported on a filter housing by yieldable springs which permit movement of the entire filter element and support structure to function as a pressure relief valve to limit the pressure differential across the filter housing. The system is particularly adapted for use with bulk material conveying systems operating at relatively low conveying air pressures of approximately 15 psig.

대표청구항 ▼

Apparatus for separating particulate material from an air flowstream comprising: a first housing defining a material separation chamber; inlet conduit means connected to said first housing and opening into said chamber for conducting a material laden air flowstream to said chamber; a second housing

Apparatus for separating particulate material from an air flowstream comprising: a first housing defining a material separation chamber; inlet conduit means connected to said first housing and opening into said chamber for conducting a material laden air flowstream to said chamber; a second housing including a generally cylindrical elongated open ended tubular member supported on said first housing and in flow communication with said first housing; and a self-cleaning filter unit including a cylindrical porous media filter element disposed within said tubular member, support means for said filter element including a resilient membrane positioned to provide a closure for one end of said chamber and including clean air flow passage means for conducting clean air from said chamber, said membrane providing the sole supporting connection between said filter element and said second housing, and means for vibrating said filter element, said means for vibrating being mounted on said support means for said filter element and being mechanically isolated from said second housing by said membrane.