| 摘要 |
PURPOSE:To prevent the clogging of a differential pressure gauge measuring the differential pressure between the upper and lower parts of a dust collection container, by supplying air to the introducing pipe to the lower part of the dust collection container being one end of a measuring pipeline from the air supply pipe of a back pressure shaking apparatus. CONSTITUTION:An exhaust port 4 exhausting air sucked from a suction port 2 and filtered by filter cloth 3 and a back pressure shaking apparatus 5 for applying back pressure to the filter cloth 3 to fall off dust from the filter cloth 3 are provided to the upper part of a dust collection container 1. One end of the differential pressure gauge 1 of the dust collection container 1 is communicated with the upper part of the container 1 and the other end thereof is communicated with the lower part of said container 1 and air can be supplied to the introducing pipe 8 to the lower part of the container 1 of the other end of the gauge 7 from the air supply pipe 9 of the back pressure shaking apparatus 5. Therefore, pressurization can be performed by sending air of the back pressure shaking apparatus 5 to the introducing pipe 8 so as to emit dust into the dust collection container 1 from the introducing pipe 8 and the clogging of a measuring pipeline 6 by dust can be prevented.
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