B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/83
B01D 46/06 (2006.01) B01D 46/02 (2006.01)
Patent
CA 1178218
Abstract A filter bag tensioning device for use in a bag house. The tensioning device comprises a straight lever arm adapted to be pivotally mounted in the upper reaches of a bag house and carrying, on the end of the lever arm opposite that of filter bag attachment, a semi-fixed counterweight. The semi-fixed counterweight is prevented from rotating as its end of the lever arm moves in an ascending direction from a horizontal position but is free to rotate as its end of the lever arm moves in a descending direction from horizontal, to therebycontinuously maintain a desired design tension on an attached filter bag. In a preferred embodiment, the lever arm can also be rotated to a vertical positionand then moved longitudinally of its pivot to substantially lower the filter bagattachment point, thereby greatly facilitating attachment and replacement of filter bags and, in a further preferred aspect, to permit these operations to be performed by a workman having both hands free. The tensioning device is preferably mounted so as to permit maximum pivoting of the lever arm during bag cleaning operations and, accordingly, maximum deflection of and minimum stress on a filter bag attached to the tensioning device.
382779
Borden Ladner Gervais Llp
Environmental Elements Corporation
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