Homogenizer, rock drilling rig and method of sampling
AssigneeSandvik Mining and Construction Oy
InventorsMaunu Manttari, Pekka Koivukunnas, Lasse Tuominen, Rami Raute
Life of this patent
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Abstract
A homogenizer for homogenizing flow, a rock drilling rig, and a method for taking samples is provided. The homogenizer is mountable to a dust collecting system of the rock drilling rig and is arranged for effecting on the flow, which contains air and drilling cuttings. The homogenizer includes a channel part through which the flow is directed and at least one air jet for directing air blows to the flow for generating disturbance in the flow and to thereby homogenize particle distribution of the drilling cuttings in the flow.
Claims10
A rock drilling rig comprising:
- a movable carrier;
- at least one drilling boom mounted on the carrier and including a rock drilling unit provided with a rock drilling machine;
- a dust collecting system arranged for removing drilling cuttings from an opening of a drilled hole, wherein the dust collecting system is provided with a suction unit, dust collecting tubing, and at least one separator for separating solid particles from flow containing air and the drilling cuttings;
- at least one sampling point for taking samples of the flow, wherein the sampling point is located prior to the separator so that the flow is still unseparated at the sampling point;
- and
- a homogenizer in the dust collecting system preceding the sampling point, the homogenizer including a channel part through which the flow is directed;
- and at least one air jet arranged on an inner surface of the channel part arranged for directing air blows to the flow for generating a disturbance in the flow and to thereby homogenize particle distribution of the drilling cuttings in the flow.
A method of sampling in a rock drilling rig, wherein the method comprises:
- drilling drill holes in a rock surface;
- collecting produced drilling cuttings from an opening of the drill holes during the drilling by means of a dust collecting system;
- taking samples of flow containing air and drilling cuttings at a sampling point of the dust collecting system during the drilling;
- providing the dust collecting system with a homogenizer before the sampling point;
- directing transverse air blows to the flow and thereby spreading drilling cutting particles in the flow to even out particle distribution of the flow;
- and
- taking the samples downstream the mentioned particle spreading.
Dependencies are inferred from the claim text.