A floor cleaner including a recovery. The recovery tank is configured to contain a fluid drawn through a suction inlet from a surface to be cleaned by a vacuum source. The recovery tank includes a shutoff float. The shutoff float is movable between a first position and a second position. The shutoff float includes a float body, a float closure, and a first interconnecting member. The first interconnecting member engages a second interconnecting member to retain the float in the first position. In the first position, the shutoff float is spaced a distance from the suction air outlet, allowing air flow through the suction air outlet. The first interconnecting member engages the second interconnecting member to retain the shutoff float in the first position. In the second position, the shutoff float is adjacent the suction air outlet, inhibiting air flow through the suction air outlet.

In one aspect, an autonomous cleaning robot includes a drive configured to propel the robot along the floor surface and a tank assembly. The tank assembly includes a reservoir, left and right receptacles, and a handle extending across a cover of the tank assembly, the handle being moveable between a first position and a second position, wherein when the handle is in the second position, the tank assembly is locked in position. The tank assembly also includes left and right latch assemblies receivable by the left and right receptacles, respectively. Each latch assembly includes a moveable assembly configured to lock the tank assembly in position when the handle is in the second position.

A vacuum cleaner, which is a portable vacuum cleaner, including a tank body, a head portion disposed above the tank body, and a battery connection portion that is disposed at the head portion and is capable of connecting to a battery. A part of an upper end portion of the tank body has a bent shape or a curved shape, and the rest part of the upper end portion of the tank body has a shape neither bending inward nor curved inward. The vacuum cleaner may further include a battery connection portion disposed at the head portion and a brushless motor disposed at the head portion. The vacuum cleaner is easy to assemble, portable, convenient in checking the battery level, waterproof and has a good performance of drainage, high efficiency in dust vacuuming, small size and compact structure, light weight, and improved service period.

A floor cleaner including a recovery tank. The recovery tank includes a tank body having a lower end wall, an open upper end, and a sidewall that extend upwardly from the lower end wall. A cover that includes a suction air outlet in fluid communication with a vacuum source. An inlet duct extends upwardly from the lower end wall. The recover tank includes a shutoff float including a float body and a closure. The float body is configured to float on a surface of cleaning fluid and the closure is received in the suction air outlet to close the suction air outlet. The float body moves along the inlet duct as the float body floats on the surface of the cleaning fluid. The float body includes an aperture extending through the float body and the inlet duct extends through the aperture of the float body.

An improved shop vacuum with wet/dry capability uses a vacuum tube that terminates in a space between the canister and the vacuum compartment such that the substance and content exiting the vacuum tube is not directly opposed the negative pressure source. This allows the substance to drain into the canister in a more controlled and less volatile condition, reducing splashing and entrainment of the substance. Moreover, a second exit for the vacuum has been added to the canister to improve the efficiency of the vacuum and the overall performance of the device.

A floor cleaner including a recovery tank in fluid communication with a vacuum source and a suction inlet. The recovery tank is configured to store cleaning fluid drawn through the suction inlet from a surface by the vacuum source. The recovery tank includes a tank body and a strainer. The tank body has a lower end wall and a sidewall that extends upwardly from the lower end wall and an inlet duct that extends upwardly from the lower end wall. The strainer is positioned inside the tank body, the strainer movable from a lowermost position to a removed position. The strainer includes a perforated body and an aperture through the body, the inlet duct extends through the aperture of the strainer, and the strainer engages an outer surface of the inlet duct retaining the strainer onto the inlet duct.

A surface cleaning apparatus such as an extractor has an upright section moveably mounted to a surface cleaning head. The upright section comprises a first stage liquid separator and a second stage cyclone separator, wherein the liquid collection container and the solid collection chamber are emptyable concurrently.

In one aspect, an autonomous cleaning robot includes a drive configured to propel the robot along the floor surface and a tank assembly. The tank assembly includes a reservoir, left and right receptacles, and a handle extending across a cover of the tank assembly, the handle being moveable between a first position and a second position, wherein when the handle is in the second position, the tank assembly is locked in position. The tank assembly also includes left and right latch assemblies receivable by the left and right receptacles, respectively. Each latch assembly includes a moveable assembly configured to lock the tank assembly in position when the handle is in the second position.

Disclosed is a device structure for automatically opening and closing a wastewater tank valve of a cleaning machine, including a cleaning machine body which is provided with a water-air separation chamber at a top and is detachably mounted with a wastewater tank at a bottom, the water-air separation chamber is provided with one end connected to a water drawing pipe and the other end connected to a main motor having a suction function, and provided with a drain port at a bottom end, the wastewater tank is provided with a wastewater tank inlet at a top end, and the drain port is communicated with the wastewater tank inlet. The wastewater tank inlet is cooperated with a water closing valve which is connected to a drive device, the drive device is capable of driving the water closing valve to open and close the wastewater tank inlet.

A surface cleaning apparatus, such as an extractor, has a liquid delivery system operable to alternately deliver a carpet cleaning solution and a hard floor cleaning solution.