B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/89
B01D 46/04 (2006.01)
Patent
CA 1149758
POPPET VALVE FOR BAGHOUSE OUTLET PLENUM 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 trans- lational 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 cylindrical 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. Case 960
362451
Company General Electric
Eckersley Raymond A.
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