A liquid container drain valve, a liquid surge surge generator, and a rinse surge generation method

摘要

The present invention relates to a draining valve for a liquid container, a liquid container for generating surge flushing and a method for generating a flushing surge. The invention has for its object to provide a simply constructed and reliably functioning surge flushing. The object is achieved in that a drain valve is provided, with a riser (3), in which liquid can ascend, and a float (11) arranged therein, which floats on entry of liquid into the riser (3), and a in the riser (3) between an open position and a closed position guided valve member (15) which is entrained by the float (11) from the closed position to the open position. The invention is characterized in that a ventilation device (24) is provided which selectively blocks and releases a vent opening (6) of the riser pipe (3) so that an air cushion (27) is discharged from the riser pipe (3) and liquid is introduced into the pipe Rising pipe (3) can occur, wherein the air cushion (27) in a to the vent opening (24) adjacent space (31) forms during the floating of the float (11). Furthermore, the object is achieved by a corresponding method.