| 摘要 |
A device for mining and removing bore dust, particularly during the execution of screen in soil equipped with drilling bits put in motion by the drive of the gear characterized in that it has exhaust fans (9ab, 10ab, 11ab, 12ab) made preferably in the form of pipes cut longitudinally, enclosed with walls in the plane of the cut, with open semi-circular exits fixed in pairs opposite each other (9a and 9b), (10a and 10b), (11a and 11b), (12a and 12b) above each of the drilling bits (8a, 8b, 8c, 8d) in their vertical axles and in the range of their rotations transferred from a gear (6), and all drilling bits (8a, 8b, 8c, 8d) are connected with a multi-channel distribution collector (2) of the drilling fluid, and the exhaust fans (9ab, 10ab, 11ab, 12ab) are connected with a collective collector removing the bore rock (13) and each of them has own air intake duct.<IMAGE>
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