| 摘要 |
The present invention relates to a suction and discharge apparatus for a drilling fluid, which is used in material removing treatment of hard constructional components formed of concrete, stone, brickwork, and the like, and including at least two air- and liquidtight reservoirs, with the first reservoir being connected with a vacuum-producing device and a suction conduit, with the second reservoir being connected with an overpressure- producing device and a discharge conduit, and with both reservoirs being connected by a conduit.
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