Patent ID: 7866244
Filing Date: 2011-01-11
Classification: F42B,F42D

Abstract:
1. A blasting treatment apparatus for disposing of an object to be treated by a blasting operation, said blasting treatment apparatus comprising: a pressure container in which the blasting operation is performed; and a suction device connected to said pressure container for sucking gas within said pressure container to the exterior; said pressure container having a shape extending in a specific direction and including a sealable outer vessel and an inner vessel disposed inside the outer vessel; said inner vessel including an inner opening formed in one of two ends of the inner vessel, an inner lid for opening and closing the inner opening, and an interconnect hole formed in the end of the inner vessel opposite to the inner lid for interconnecting an interior and an exterior of the inner vessel; said outer vessel including an outer opening formed in an end of the outer vessel on the same side as the inner lid, a pressure-resistant lid for opening and closing the outer opening, a first vent provided at a location corresponding to the interconnect hole of the inner vessel for interconnecting the interior and the exterior of the outer vessel, and a second vent provided in an upper portion of the outer vessel between the first vent and the pressure-resistant lid for interconnecting the interior and the exterior of the outer vessel, and said outer vessel having a shape appropriate for sealing an internal space of the outer vessel with the pressure-resistant lid closed; wherein a gap is provided between the outer vessel and the inner vessel, the first vent is connected to the suction device and the gap, the first vent is located so that gas produced in the inner vessel as a result of blasting therein is sucked through the first vent and the interconnect hole from the inner vessel and gas produced as a result of blasting and flowing from the interior of the inner vessel through the interconnect hole into the gap is sucked through the first vent, the second vent is connected to the suction device and a portion of the gap that is located between the upper portion of the outer vessel and an upper exterior portion of the inner vessel, and the second vent is located so that gas produced as a result of blasting and released from the inner vessel through the inner opening when the inner lid is opened is sucked through said portion of the gap and the second vent.