Gas separation – With nonliquid cleaning means for separating media – Cohesive filter media cleaning
Patent
1986-06-09
1988-04-05
Hart, Charles
Gas separation
With nonliquid cleaning means for separating media
Cohesive filter media cleaning
55315, 55429, 55468, 55DIG3, B01D 4604, B01D 5000
Patent
active
047356391
ABSTRACT:
Vacuum loading apparatus is provided for ingesting a mixture of debris (such as particulate matter) and ambient air, for collecting the debris for disposal, and for filtering the ingested air before discharging it to atmosphere. The apparatus comprises three relatively light-weight, portable, independently movable modules, each incorporating a weeled chassis, to facilitate their movement to, from and on the jobsite, whereat they are interconnected for use by large flexible hoses. The power module comprises a motor-driven vacuum blower. The debris-receiver module comprises a receiver tank with a removable disposable debris-collection bag therein (which bag may or may not have an associated filter) and a debris-collection vacuum hose connected to the exterior thereof. The upper and lower ends of the receiver tank and the inside and outside of the bag are exposed to the same negative air pressure in the tank to prevent its collapse or damage by a pressure equalization duct. The filtration module, which is connected between the vacuum pump and the receiver tank by flexible hoses, comprises two filter tanks, each having a filter assembly therein, and further comprises selector valves which are operable to enable use of either or both filter tanks during normal vacuuming and also to enable purging either one of the filter tanks so that accumulated filtrate therein can be fed back to the debris-collection bag in the receiver tank.
REFERENCES:
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patent: 3490208 (1970-01-01), Meyer et al.
patent: 3618297 (1971-11-01), Hamrick
patent: 3653190 (1972-04-01), Lee et al.
patent: 3842461 (1974-10-01), Wurster
patent: 3951623 (1976-04-01), Furstenberg
patent: 4133658 (1979-01-01), Callewyn
patent: 4285704 (1981-08-01), Zuzanov et al.
patent: 4581050 (1986-04-01), Krantz
Hart Charles
Kirby Thomas F.
Nilles James E.
Vacuum America Corporation
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