Inwardly inclined dust capturing hood of hydraulic drill rig

The invention discloses an inwardly inclined dust capturing hood of a hydraulic drill rig. An outer hood body, an inner bulge and an earthwork contact part are mutually connected into a whole and are together fixed in a dust capturing hood fixing frame; an upper sealing opening is fixedly formed in the dust capturing hood fixing frame and is tightly adhered to a drilling rod which is inserted into the dust capturing hood fixing frame; the earthwork contact part is tightly adhered to a ground hole; an air outlet is formed in one side of the outer hood body; the air outlet is connected with a residue discharge pipeline. The air outlet is formed in the deepest part of a groove formed by the inner bulge and the outer hood body. The inwardly inclined dust capturing hood has the benefits that as the air outlet is formed in the deepest part of the groove formed by the inner bulge and the outer hood body, macadam and dust from the bottom of a hole and the earthwork contact part can fall into the groove of the outer hood body and the inner bulge, enter the air outlet from the bottom of the outer hood body under the action of the sucking force and the gravity of the air outlet, and are discharged out along the pipeline, so that residues can be rapidly discharged and prevented from repeated falling. The inwardly inclined dust capturing hood has the characteristics of being simple in structure, convenient to maintain and the like.