| 摘要 |
An impurity discharge apparatus for a compressed air-powered vacuum cleaner is provided to reduce the working time and improve the workability by discharging a predetermined amount of impurities and then storing new impurities through opening and closing the bottom surface of a storage tank. An impurity discharge apparatus for a compressed air-powered vacuum cleaner comprises a cap(100) for opening and closing the bottom surface of a storage tank(20). At least one opening and closing cylinder(200) is installed at the storage tank and has a rod end vertically coupled with the cap. A storage amount detector(300) installed at the storage tank to operate if a predetermined amount of the impurities are stored in the storage tank. An air limit switch valve(400) is installed at the storage tank and includes first and second air discharge lines(410,420). A cut-off valve(500) supplies compressed air to a vacuum head. Cap open and close delay air tanks(600,700) are connected to the first and second air discharge lines, respectively, to discharge introduced compressed air.
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