| 摘要 |
The essential device of this machine comprises a pressurised liquid injection mechanism, comprising a storage tank (1), a pressurised delivery pump (2) and a pressurised ejection nozzle fed via a long pipe (3), and a liquid suction mechanism comprising a storage tank (1), a vacuum pump (8) and a suction nozzle connected to a long suction pipe (10), the refuse which is displaced from the pores of the permeable covering by the pressurised water being sucked up immediately with it and collected in the tank (11) in order to be subsequently treated. <IMAGE>
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