Apparatus for powered baghouse filter extraction

Details Apparatus for powered baghouse filter extraction Apparatus for powered baghouse filter extraction

1997-01-31

1999-10-19

Watson, Robert C.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

B23P 1904

Patent

active

059667931

ABSTRACT:
Portable cylinder-powered tools and related power extraction methods for removing filter bags during baghouse filter servicing. The preferred tools comprise elongated, pneumatic cylinders provided with handles for easy grasping. Control valves emanating from a manifold activate the cylinder. A rigid extractor and a companion foot extend downwardly from the cylinder. The extractor terminates in a wedge-like prong that penetrates the tubesheet orifice and engages a baghouse filter. In a first embodiment the extractor is fixed and the foot is ram driven. A second tool directly controls the extractor with the cylinder ram, and the foot is fixed to the cylinder to brace the tool when the extractor is forcibly retracted. The extractor barb first deforms and then captivates the filter. The ram forces the extractor and the prong upwardly, and the bag filter is forcibly dragged out of the tubesheet orifice. The methods described herein effect the power removal of baghouse filters with extractor prong arrangements of the character described.

REFERENCES:
patent: 1036748 (1912-08-01), Tobey
patent: 1598887 (1926-09-01), Smith
patent: 3069761 (1962-12-01), Sommer
patent: 3689978 (1972-09-01), Kelso
patent: 3908258 (1975-09-01), Barty
patent: 5233740 (1993-08-01), Chen
patent: 5704591 (1998-01-01), Byrne

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