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1. (WO2017038730) CENTRIFUGAL ROTARY PARTICULATE STORAGE TANK, CENTRIFUGAL IMPELLER UNIT, AND DEVICE FOR PROJECTING PARTICULATES AT PIPE INNER SURFACE

Pub. No.:    WO/2017/038730    International Application No.:    PCT/JP2016/075106
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Sun Aug 28 01:59:59 CEST 2016
IPC: B24C 9/00
B24C 3/06
B24C 3/16
B24C 3/32
Applicants: URAKAMI LLC
ウラカミ合同会社
Inventors: URAKAMI Fukashi
浦上 不可止
Title: CENTRIFUGAL ROTARY PARTICULATE STORAGE TANK, CENTRIFUGAL IMPELLER UNIT, AND DEVICE FOR PROJECTING PARTICULATES AT PIPE INNER SURFACE
Abstract:
Provided is a device for projecting particulates at a pipe inner surface that can be used even in environments in which the action of gravity cannot be utilized, projects an abrasive cleaning material at the entire circumference of a pipe inner wall while moving along the pipe inner surface, and is provided with a function for recycling the abrasive cleaning material. The device is equipped with a centrifugal rotary particulate storage/supply tank (110), a centrifugal impeller unit (120), and a pressure boundary partition unit (121). The centrifugal impeller unit (120) for particulates is disposed upstream of the pressure boundary partition unit (121). The centrifugal rotary particulate storage/supply tank (110) is disposed in a downstream-side region. Particulates that have been projected at the pipe inner wall by the action of the centrifugal impeller (124) are recovered and transported to the particulate tank (110) by the flow of a medium fluid. The particulates are temporarily stored in the tank by the action of centrifugal force. The particulates are subsequently discharged from the particulate tank (110) by a screw conveyor (114) and transported to the centrifugal impeller (124), and are again projected at the pipe inner wall. The motion of recovering and projecting the particulates is thus repeated.