Filter cleaning device
First Claim
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1. Filter device for cleaning gases comprising:
- (a) a filter casing having a bottom, a gas inlet, a gas outlet and an impurity outlet;
(b) a filter cartridge having a plurality of radially oriented projections;
(c) mounting means to removably and rotatably mount the filter cartridge within the filter casing such that it may rotate about an axis extending in a substantially horizontal direction, the mounting means comprising;
(i) first and second openings defined in opposite end walls of the filter casing;
(ii) a tubular outlet socket attached to one end of the filter cartridge and adapted to rotatably fit into the first opening;
(iii) a cover member adapted to fit over the second opening; and
,(iv) means to rotatably attach the cover member to the filter cartridge.(d) fan means operatively communicating with the gas outlet so as to draw contaminated gas into the filter casing through the gas inlet such that it passes through the filter cartridge, thereby removing impurities from the gas;
(e) a first driving motor drivingly connected to the fan means;
(f) drive means to rotate the filter cartridge about the substantially horizontal axis comprising;
(i) a driven gear attached to the filter cartridge;
(ii) a second driving motor(iii) a driving gear attached to the second driving motor and engaging the driven gear;
(g) at least one impeding means stationarily attached to the bottom of the filter casing and having a portion extending toward the filter cartridge such that it contacts a lower portion of the radial projections thereof as the filter cartridge rotates imparting a shaking movement to them to remove entrapped impurities from the filter cartridge thereby causing them to fall away from the filter cartridge due to the effects of gravity and the centrifugal force generated by the rotation of the filter cartridge to prevent re-clogging the filter cartridge; and
,(h) control circuit means connecting the first and second driving motors to a source of power, the control circuit means including switch means movable between a first position wherein only the first driving motor is connected to the power source and a second position wherein only the second driving motor is connected to the power source such that the filter cartridge rotates only when the fan means is inoperative.
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Abstract
The present invention relates to a filter cleaning device, preferably for the cleaning of gases, such as welding fumes. To provide a filter cleaning device which efficiently cleans the filter without need for dismounting it, the filter cleaning device comprises at least one rotary filter (10) with outwardly directed projections (17), and at least one impeding device (12) which upon rotation of the filter (10) causes the projections (17) to give way and permits them to revert, whereby a shaking movement is imparted to the projections (17) to make them shake off the impurities adhering to them and toss the impurities aside by the action of the rotation of the filter (10).
42 Citations
12 Claims
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1. Filter device for cleaning gases comprising:
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(a) a filter casing having a bottom, a gas inlet, a gas outlet and an impurity outlet; (b) a filter cartridge having a plurality of radially oriented projections; (c) mounting means to removably and rotatably mount the filter cartridge within the filter casing such that it may rotate about an axis extending in a substantially horizontal direction, the mounting means comprising; (i) first and second openings defined in opposite end walls of the filter casing; (ii) a tubular outlet socket attached to one end of the filter cartridge and adapted to rotatably fit into the first opening; (iii) a cover member adapted to fit over the second opening; and
,(iv) means to rotatably attach the cover member to the filter cartridge. (d) fan means operatively communicating with the gas outlet so as to draw contaminated gas into the filter casing through the gas inlet such that it passes through the filter cartridge, thereby removing impurities from the gas; (e) a first driving motor drivingly connected to the fan means; (f) drive means to rotate the filter cartridge about the substantially horizontal axis comprising; (i) a driven gear attached to the filter cartridge; (ii) a second driving motor (iii) a driving gear attached to the second driving motor and engaging the driven gear; (g) at least one impeding means stationarily attached to the bottom of the filter casing and having a portion extending toward the filter cartridge such that it contacts a lower portion of the radial projections thereof as the filter cartridge rotates imparting a shaking movement to them to remove entrapped impurities from the filter cartridge thereby causing them to fall away from the filter cartridge due to the effects of gravity and the centrifugal force generated by the rotation of the filter cartridge to prevent re-clogging the filter cartridge; and
,(h) control circuit means connecting the first and second driving motors to a source of power, the control circuit means including switch means movable between a first position wherein only the first driving motor is connected to the power source and a second position wherein only the second driving motor is connected to the power source such that the filter cartridge rotates only when the fan means is inoperative. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification