A rotary cleaning apparatus for underwater cleaning including a housing, a battery, a motor and a flexible hub system. The flexible hub system includes a toroidal brush system coupled to a circular centrifugal pump assembly. The flexible hub system includes a flexible hub allowing the flexible hub system to bend out of plane. When the flexible hub system is rotated underwater at a curved surface, the brush system cleans the surface while the suction of the centrifugal pump assembly flexes the flexible hub system to evenly contact the surface.

The present disclosure relates to a handheld swimming pool sewage suction machine, including a body and a suction head, the body being therein with a first water pump, a filtering device, a second water pump, a main channel and a bypass channel, the filtering device and the first water pump being at least partially located in the main channel, and the second water pump being at least partially located in the bypass channel; wherein the first water pump enables water to flow into the main channel from a first water inlet and to be discharged from a body outlet after filtration by the filtering device; and the second water pump enables the water to flow into the main channel from a second water inlet of the bypass channel when a predetermined condition is fulfilled. The handheld swimming pool sewage suction machine can start operating under different water depth conditions.

A pool cleaning device for cleaning pools includes a tubular wand having a brush portion and a battery portion. The tubular wand incudes a first shaft telescopically coupled within a second shaft. A battery housing is affixed to the battery portion and a power source is positioned within the battery housing. A motor housing is pivotably attached to the brush portion such that the motor housing is movable between an upwardly angled position and a downwardly angled position. A motor is positioned within the motor housing. An output shaft is rotatably coupled to the motor. The output shaft extends outwardly from the motor. A bristle brush is removably coupled to the output shaft, wherein the motor rotates the output shaft, thereby rotating the bristle brush. Pivoting the motor housing pivots the bristle brush between the upwardly angled position and the downwardly angled position.