US 6,319,295 B1 · Process and device for cleaning a dust separator

Abstract

There is described a method and an apparatus for cleaning a dust separator which has a raw gas shaft (3), through which raw gas flows from the top to the bottom, and filter elements (5) protruding into the raw gas shaft (3) transverse to the raw gas flow, by which filter elements the raw gas is deflected into a clean gas shaft (4) under a corresponding separation of dust, and which filter elements are briefly subjected to compressed air one after the other for blowing off the dust particles deposited on the same into the raw gas shaft (3), where during the application of compressed air onto the filter elements (5) their flow connection to the clean gas shaft (4) is interrupted. To ensure a good cleaning effect, it is proposed that during the interruption of the flow connection between the filter elements (5) and the clean gas shaft (4) a raw gas stream having a flow component directed from the top to the bottom flows around the filter elements (5) blocked against the clean gas shaft (4).

Claims8

Dependent claims

A method of cleaning a dust separator comprising a vertical raw gas shaft, a vertical clean gas shaft and groups of at least one filter element transversely extending into the raw gas shaft, which method comprises the steps of

(a) forcing a raw gas stream to flow downwardly through the vertical raw gas shaft,
(b) connecting the filter elements to the clean gas shaft to deflect the raw gas stream by the filter elements to the clean gas shaft while the filter elements separate dust particles from the raw gas stream and the dust particles are deposited on the filter elements,
(c) successively subjecting one group after another to at least one pulse of compressed air to blow off the deposited dust particles into the raw gas shaft, and
(d) disconnecting the group of at least one filter element which is subject to at least one pulse of compressed air from the clean gas shaft to interrupt the flow of the raw gas stream from the disconnected group to the clean gas shaft while the continuing downwardly flowing forced raw gas stream flows around the disconnected group.

1 more element

A dust separator comprising

(a) vertical raw gas shaft having a raw gas input at an upper end thereof to provide a downwardly flowing raw gas stream,
(b) a vertical clean gas shaft having a suction blower,
(c) groups of at least one filter element transversely extending into the raw gas shaft, the filter elements being connected to the clean gas shaft for deflecting the raw gas stream to the clean gas shaft, the suction blower causing a downwardly flowing forced flow of raw gas, the filter elements separating dust particles from the raw gas stream and the dust particles being deposited on the filter elements,
(d) a source providing one group after another with at least one pulse of compressed air to blow off the deposited dust particles into the raw gas shaft,
(e) at least one valve between the source of compressed air and the groups of at least filter element, and
(f) at least one shut-off means for disconnecting the group of at least one filter element which is subject to at least one pulse of compressed air from the clean gas shaft to interrupt the flow of the raw gas stream from the disconnected group to the clean gas shaft while the continuing downwardly flowing forced flow of raw gas flows around the disconnected group.

3 more elements

Dependencies are inferred from the claim text.

Process and device for cleaning a dust separator

Life of this patent

Process and device for cleaning a dust separator

Life of this patent

Abstract

Claims8