Gas separation – With nonliquid cleaning means for separating media – Relatively movable pneumatic nozzle
Patent
1988-03-11
1989-08-08
Hart, Charles
Gas separation
With nonliquid cleaning means for separating media
Relatively movable pneumatic nozzle
55302, B01D 4604
Patent
active
048549517
DESCRIPTION:
DESCRIPTION
BEST MODE OF CARRYING OUT THE INVENTION
The apparatus 10, as is best seen in FIG. 1 comprises: shown) and a clean gas section 13 with an outlet (not shown); gas section 12 from the clean gas section 13 and having a plurality of concentric rings of ports 15 circularly spaced on the porting plate 14; each port 15 has a closed ended filter medium sleeve 16 depending therefrom. Each of the sleeves 16 is supported against collapse by a wire cage 17; backflushing gas; and radially across and spaced above the concentric rings of ports 15 in the porting plate 14 within the clean gas section 13 of the housing 11.
The housing 11, porting plate 14, and filter medium sleeves 15 may be of entirely conventional construction and will not be further described herein.
The rotary backflushing gas pulse distributing means 19 includes a vertically extending inlet tube 21 which is in fluid communication with an outlet tube 22 of the gas pulse generating means 18. At its lower end tube 21 is connected to a pair of radially extending gas manifolds 23 and 24. Each manifold 23 and 24 extends across and above the porting plate 14 and carries a plurality of downwardly directed nozzles 25. The nozzles 25 of manifold 23 are positioned so that they respectively rotate over one of the even numbered rings of ports 15 while the nozzles 25 of the manifold 24 are positioned so that they respectively rotate over the odd numbered rings of ports 15. Clearly the distributing means can be produced in alternative manners as a matter of design preference. For example, the nozzle of each manifold 23 and 24 can be arranged as a plurality of equally radially spaced pairs, each nozzle 25 of a respective pair aligning upon rotation with its respective ring of ports 15.
The tube 21 and manifolds 23 and 24 are supported by an upper bearing 26 connected to the housing 11 and by a support 27 and a lower bearing 28. As is best seen in FIG. 5 the lower bearing 28 is mounted on the porting plate 14 and is an angular contact spherical plain bearing. The bearing 28 is located within a bearing housing 29 on a mounting plate 31 which is bolted by bolts 32 to the porting plate 14. The bearing 28 can be of any alternative suitable construction. The support 27 is journalled at its lower end 33 to fit within bearing 28 and has welded to it a downwardly opening bell shaped dust cover 30 which surrounds the bearing housing 29.
The bearing 26 at the upper end of the tube 21, as is best seen in FIG. 2, comprises a bearing housing 34 connected at its lower end to the upper end of the tube 21. The bearing housing 34 surrounds a bronze bush 35 which in turn surrounds the lower end of tube 22. An oil seal is positioned at the upper end of the bearing housing 34 to provide a seal between the housing 34 and tube 22.
A seal 36 is provided around the tube 21 where it penetrates the housing 11. The seal 36 comprises a split seal housing 37, a tube seal packing 38 and a split seal cover 39.
The lower end of the bearing housing 34 carries a radially outwardly extending flange 41 to which is bolted a chain plate wheel 42. The gas pulse distributing means 19 is caused to rotate by a chain drive to the chain plate wheel 42. The chain drive comprises motor 43 and double reduction gearbox 44 bolted to the housing 40 of the gas pulse generating means 18 which drive a sprocket 45 connected to gearbox output shaft 46 through a free-wheeling clutch 47. The sprocket 45 and chain plate wheel 42 are connected by chain 48.
The gas pulse generating means 18 includes a housing 40 which is mounted directly on top of housing 11 has a common wall 49 therewith. The housing constitutes a gas accumulation tank or reservoir which receives gas from a pump (not shown) through pipe 51, valve 52 and inlet nipple 53. The housing 40 includes a substantially cylindrical side wall 54 and a top plate 55. A gas release valve assembly 56 is bolted onto the top plate 55 which projects through an aperture therein in concentric alignment with gas pulse outlet tube 22.
The valve 56 includes a normally closed two way u
REFERENCES:
patent: 3487609 (1970-01-01), Caplan
patent: 3951627 (1976-04-01), Barr et al.
patent: 4157899 (1979-06-01), Wheaton
patent: 4227903 (1980-10-01), Gustavsson et al.
patent: 4655799 (1987-04-01), Bosworth et al.
Hart Charles
James Howden Australia Pty. Ltd.
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