Abstract: A laminar flow electrostatic precipitator (200) is provided with a plurality of sandwich structure electrodes (100) alternatingly coupled to a respective one of a pair of output terminals (222, 224) of high voltage power supply (220). Each of the sandwich structure electrodes (100) includes a three layer electrode body (110, 110', 110") formed by a pair of plate members (112, 114) and a support structure (120, 120', 120") disposed between the pair of plate members for maintaining the plate members in a substantially flat contour. The spacing between the plurality of sandwich structure electrodes (100) and the velocity of gas flow there past is selected to achieve laminar flow and thereby maximize the particulate removal efficiency of the precipitator (200).

Abstract: A filter bag tensioning device for use in a bag house is disclosed. 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 thereby continuously maintain a desired design tension on an attached filter bag. In a preferred embodiment, the lever arm can also be rotated to a vertical position and then moved longitudinally of its pivot to substantially lower the filter bag attachment 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.

Abstract: A filter bag tensioning device for use in a bag house is disclosed. 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 thereby continuously maintain a desired design tension on an attached filter bag. In a preferred embodiment, the lever arm can also be rotated to a vertical position and then moved longitudinally of its pivot to substantially lower the filter bag attachment 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.