Importance

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Abstract

A cleaning machine operating with granules having a pump for ejecting liquid optionally with or without granules which are heavier than the liquid, through nozzles against the goods to be cleaned in a treatment space (10) connected to the suction side of the pump via a bottom outlet (11). A granule valve having a socket (38) open at each en thereof is associated with the bottom outlet, said socket being guided for vertical displacement between the upper position with an opening at the lower end of the socket for drawing liquid with granules entrained therein by the pump from the treatment space at a lower level, and a lower position with the opening at the lower ned of the socket closed for drawing liquid only by the pump from a higher level at the upper end of the socket. A projecting circumferential flange (49) is provided on the socket (38) below the upper end thereof said flange forming together with a cap (44) provided over the socket, a labyrinth seal for preventing granules from being withdrawn together with the liquid.

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First Claim