Method and arrangement for reducing dust-related problems in rock drilling
AssigneeSandvik Tamrock Oy
InventorsKari Juujärvi, Tapani Sormunen
Life of this patent
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Abstract
In a method and arrangement for reducing dust-related problems in rock drilling, air and liquid mist is supplied into a drilling hole to moisten the dust that comes off the drilling hole. The air and moistened dust exiting from the drilling hole are led to a dust separator, dust portions that collect into the dust separator being removed therefrom at suitable intervals. When dust is to be removed from the dust separator's filter, liquid is supplied to the portion below the filter in a mist-like form or as small droplets in connection with the dust removal to moisten the dust which then falls out of the lower end of the dust separator.
Claims13
A method for reducing dust-related problems in rock drilling, comprising:
- supplying air and liquid mist into a drilling hole to moisten dust that comes off the drilling hole;
- leading the air and moistened dust exiting from the drilling hole to a dust separator for separating the dust from the air by leading the air through at least one filter;
- removing dust portions that collect in the dust separator at suitable intervals;
- and
- at least when dust is to be removed from the dust separator, supplying liquid in at least one of a form of a mist and as small droplets substantially only to a lower portion of the dust separator below the at least one filter so that the dust portion removed from the dust separator is moist.
An arrangement for reducing dust-related problems in rock drilling, the arrangement comprising:
- means for supplying flushing air and liquid into a drilling hole;
- suction means for sucking air containing stone dust and exiting from the drilling hole;
- a dust separator for separating the stone dust from the air containing stone dust;
- means for removing dust that accumulates from the dust separator;
- means for supplying liquid in a form of at least one of a mist and small droplets into a lower portion of the dust separator for moistening the acumulated dust at least when the dust is being removed from the dust separator by the removing means;
- and
- a liquid container for storing liquid to be used for moistening the dust.
Dependencies are inferred from the claim text.