Accessory tool for a vacuum cleaner

摘要

An accessory tool can include a recovery tank assembly for removing fluid and dirt from a surface to be cleaned and store the recovered fluid and dirt. The accessory tool can be used in connection with a vacuum cleaner including an extraction cleaner. The accessory tool can include a housing assembly having a suction outlet opening adapted to be connected to a vacuum hose in fluid communication with the suction source of the vacuum cleaner and a recovery tank can be in fluid communication with the suction nozzle to store liquid drawn in through the suction nozzle.

主权项

1. An accessory tool for use in connection with a vacuum cleaner with a suction source, comprising:
a housing assembly having a suction outlet opening adapted to be connected to a vacuum hose in fluid communication with the suction source; a suction nozzle fluidly coupled to the suction outlet opening; an auxiliary recovery tank in fluid communication with the suction nozzle to collect liquid drawn in through the suction nozzle; a backflow preventer located within a suction flow path between the suction nozzle and the auxiliary recovery tank, wherein the backflow preventer is configured to prevent leakage of fluid from the auxiliary recovery tank back into the suction nozzle; and a liquid flow preventer between the auxiliary recovery tank and the suction outlet opening, wherein the liquid flow preventer opens upon exposure to a working airflow and closes when suction is not applied to block liquid from flowing to the suction outlet opening.