| 摘要 |
<p>A system for cleaning public transport vehicles comprises a compressed air producing station 1 connected to at least one Venturi suction pump M-4 which is used as a dust-liquid extractor. Different types of suction nozzle depending on the surface to be cleaned, may be connected to the Venturi suction pump M-4. Compressed air from the producing station 1 is also used to operate dry foam producing apparatus M-8, and spraying apparatus M-7. Tanks 2, 3 may contain detergents and water respectively. <IMAGE></p> |
