Mining or in situ disintegration of hard material – Hard material disintegrating machines – With material-handling means
Patent
1971-08-05
1978-02-28
Lutter, Frank W.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
With material-handling means
55 22, 55 91, 55230, 55385D, 98 50, 261 89, 299 12, E21C 3502
Patent
active
040763153
ABSTRACT:
A dust abatement device including an intake or collecting means for delivering air to a rotating fan constituting a propulsion means, and outlet means directing air from the fan in a curtain at an area of dust concentration to inhibit dust movement out of the area. The intake means includes a duct extending from the fan to the area of dust concentration to pick up and deliver air-borne dry dust particulate from such area to the fan, the fan mixing the dry dust particulate with liquid sprayed on the fan to provide a slurry, and the outlet means directing the air and slurry from the fan to the area of dust concentration so that the slurry further wets the dust particulate at such area. The dust abatement device can be mounted on a machine that includes a mechanism for acting on material in a manner so as to create the area of dust concentration. More particularly, the dust-forming mechanism can be the cutter head of a continuous mining machine that rotates in a direction to cause an air flow rearwardly and upwardly from the area of dust concentration. In this event, the fan delivers the air and slurry in a spray to the cutter head and substantially in a direction counter to the air flow created by the cutter head to retard such flow and movement of the dry dust particulate away from the area of dust concentration.
REFERENCES:
patent: 831275 (1906-09-01), Fries
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patent: 1982470 (1934-11-01), Franks
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patent: 3387889 (1968-06-01), Ziemba et al.
patent: 3474597 (1969-10-01), Eckert
patent: 3603644 (1971-09-01), McCleery
Gundlach Theodore F.
Hawthorne Arthur L.
Lacey David L.
Lutter Frank W.
Rexnord Inc.
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