Claims
- 1. A filter apparatus comprising:
- (a) a filter housing having opposing upstream and downstream walls andd a pair of opposing side walls interconnecting the upstream and downstream walls including:
- (1) a gas treating enclosure having a plurality of dirty gas inlet apertures in the upstream wall and a plurality of clean gas outlet apertures in the downstream wall;
- (2) a hopper portion disposed below and open to the interior of the gas treating enclosure having a pair of downwardly converging sloping walls extending from the opposing upstream and downstream walls between the side walls; and,
- (3) elongated trough means extending completely across the hopper portion and being open to the interior of the hopper portion along its entire length;
- (b) means defining a plurality of filter cells adapted to be filled with a granulated gas treating material disposed within the gas treating enclosure of the filter housing such that gas to be cleaned passes through one of said filter cells before exiting through one of said clean gas outlet apertures, said filter cell defining means being open to the hopper portion of the filter housing so that when the filter cell defining means are filled with granulated gas treating material, granulated gas treating material will fall into the hopper portion of the filter housing;
- (c) an elongated baffle plate secured to the side walls spaced above the bottom of the elongated trough means and extending completely across the hopper portion and cooperating with the elongated trough means to define an elongated gas treating material conveying channel within and extending completely across the hopper portion of the filter housing, the longitudinal edges of the elongated baffle plate being spaced from the sides of the elongated trough means to define two parallel elongated slots between the longitudinal edges of the elongated baffle plate and the sides of the elongated trough means which are of uniform width and extend parallel to the longitudinal axis of the elongated trough means so that the gas treating material conveying channel is open to the interior of the hopper portion of the filter housing only along the longitudinal edges of the elongated baffle plate;
- (d) a conveying gas inlet aperture in one of the side walls opening into the gas treating material conveying channel at one end of the gas treating material conveying channel;
- (e) a gas treating material and conveying gas outlet aperture in the other side wall opening into the other end of the gas treating material conveying channel, said gas treating material and conveying gas outlet aperture being larger in cross-sectional area than said conveying gas inlet aperture to promote progressive aspiration of treating material from the interior of the hopper portion along the conveying channel commencing at the end of the channel proximate the conveying gas inlet aperture.
- 2. The filter apparatus of claim 1 wherein the elongated baffle plate is of chevron shape in transverse cross-section with the apex of the chevron projecting upwardly.
- 3. The filter apparatus of claim 2 wherein:
- the elongated trough means is transversely centrally disposed within the hopper portion of the filter housing; and,
- the elongated baffle plate is transversely centrally disposed within the hopper portion of the filter housing.
- 4. The filter apparatus of claim 2 wherein the included angle of the chevron shaped baffle plate is approximately 90.degree..
- 5. The filter apparatus of claim 2 wherein:
- the conveying gas inlet aperture is generally rectangular in shape; and,
- the gas treating material and conveying gas outlet aperture is generally oval in shape.
- 6. The filter apparatus of claim 2, wherein:
- the gas conveying inlet aperture is formed in its respective side wall so that at least 50% of its area is located in that region at one end of the channel which is bounded by an imaginary transverse line joining the longitudinal edges of the chevron shaped elongated baffle plate, the sloping surfaces of the chevron shaped elongated baffle plate, and the apex of the chevron shaped elongated baffle plate; and
- the gas treating material and conveying gas outlet aperture is formed in its respective side wall so that at least 50% of its area is located in that region at the other end of the channel which is bounded by an imaginary transverse line joining the longitudinal edges of the chevron shaped elongated baffle plate, and the apex of the chevron shaped elongated baffle plate.
- 7. The filter apparatus of claim 1 wherein:
- a converging nozzle forming said conveying gas inlet aperture is secured to the side wall having said aperture.
- 8. The filter apparatus of claim 1 further comprising:
- a suction source located outside of the filter housing;
- a source of pressurized conveying gas located outside of the filter housing;
- the suction source being in communication with the interior of the gas treating material conveying channel through the gas treating material conveying gas outlet aperture; and,
- the source of pressurized conveying gas being in communication with the gas treating material conveying channel through the conveying gas inlet aperture.
- 9. The filter apparatus of claim 8 wherein:
- the suction source is on the low pressure side of a blower and,
- the source of pressurized conveying gas is the pressure side of the same blower.
Parent Case Info
This application is a continuation of U.S. patent application Ser. No. 808,915, filed June 22, 1977, now abandoned.
US Referenced Citations (7)
Continuations (1)
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Number |
Date |
Country |
Parent |
808915 |
Jun 1977 |
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