Patent ID: 7258782
Filing Date: 2007-08-21
Classification: B01D

Abstract:
1. An apparatus for sampling a filter layer, comprising: a cylindrical tube having a designated length; a screw installed at a central portion in the cylindrical tube, wound in a spiral shape and rotated for shifting the obtained sample from a lower part to an upper part of the cylindrical tube; and a rotary operating unit fixed to an upper end of the screw for rotating the screw, wherein the cylindrical tube is made of a transparent material so that a worker at the outside of the cylindrical tube observes the inside of the cylindrical tube, and provided with a scale formed on the outer circumference thereof in a longitudinal direction, and a protective cap combined with a lower end of said cylindrical tube for smoothly excavating the filter layer and preventing the damage of the cylindrical tube generated when the filter layer is excavated, a fixed supporter is placed on the upper end of the screw, inserted into an upper opened end of the cylindrical tube, and said fixed supporter is provided with a rotary bearing installed therein for the smooth rotation of the screw, and a supporting hand lever is protruded from one side of the fixed supporter to the outside of the cylindrical tube for maintaining the balance between the cylindrical tube and the screw when the screw is rotated and allowing the worker to press the supporting hand lever with force required for excavation, and further comprising a gauge made of a transparent material having an inner diameter, into which the cylindrical tube is inserted, so that the obtained sample maintaining its stratification is discharged from the inside of the cylindrical tube to the gauge, and is provided with a scale formed on the outer circumference thereof.