Gas separation – With nonliquid cleaning means for separating media – Cohesive filter media cleaning
Patent
1981-03-09
1982-11-23
Nozick, Bernard
Gas separation
With nonliquid cleaning means for separating media
Cohesive filter media cleaning
55 96, 55417, 251118, 13762538, B01D 4604
Patent
active
043603700
ABSTRACT:
Following reverse gas flow cleaning of bag filters in a baghouse (17), controlled re-inflation of the bag filters is provided by a poppet valve (10) positioned in an opening (15) through which dust-free gas can pass from the baghouse (17) into a clean gas plenum (20). The poppet valve (10) comprises a valve plate (30) affixed to a valve stem (31) that is mounted for translational motion in the opening (15) so that the valve plate (30) can cover the opening (15) when the opening (15) is to be closed and can be moved away from the opening (15) when the opening (15) is to be unclosed. A cylindrical skirt (32) affixed to the valve stem (31) provides restricted gas flow through the opening (15) for a sufficient time to enable gradual re-inflation of the bag filters as the valve (10) is being opened following reverse gas flow cleaning of the bag filters. The cyllindrical skirt (32) has a longitudinally extending orifice portion such as at least one longitudinally extending slot (50) to enable the rate of dust-free gas flow through the opening (15) to be increased gradually as the valve (10) is being opened.
REFERENCES:
patent: Re29280 (1977-06-01), McNabey
patent: 991550 (1911-05-01), Thomas
patent: 2071876 (1937-02-01), Gordon
patent: 3616614 (1971-11-01), Elsenegger
patent: 3706320 (1972-12-01), Kalsi
patent: 3834662 (1974-09-01), Huntington
patent: 3898062 (1975-08-01), Slakey
patent: 3975173 (1976-08-01), Peterson et al.
patent: 4046526 (1977-09-01), Phillipi
patent: 4113449 (1978-09-01), Bundy
General Electric Co.
Nozick Bernard
Schlamp Philip L.
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