Abstract: The present disclosure provides a hand-held swimming pool cleaning apparatus and a corresponding control method. The apparatus includes a housing having at least one water suction inlet and at least one water discharge outlet, a water pump, and a detachable filtering device. The water pump operates in two selectable modes: a filtering mode and a backwashing mode. In the filtering mode, the pump directs water flow through the suction inlet, across the filtering device, and out through the discharge outlet to collect debris. In the backwashing mode, the pump reverses the flow direction, flushing water through the filtering device opposite to the filtering flow, thereby washing and unclogging the filter. This self-cleaning capability eliminates the need for manual filter washing, extends the effective service life of the filtering device, delays clogging, increases the debris collection box capacity, and prolongs continuous operation.

Abstract: A water tank assembly includes a main water tank and an auxiliary water tank. A water pumping device in operation pumps and discharges water in a first water storage space of the main water tank into a second water storage space of the auxiliary water tank. A water guiding device in operation outputs water from the second water storage space to a preset position. The water pumping device in operation can supply water to the auxiliary water tank as needed. The main water tank does not discharge water into the auxiliary water tank when the water pumping device is not in operation. As a result, the water amount in the auxiliary water tank no longer increases.

Abstract: 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.

Abstract: A water tank assembly includes a main water tank and an auxiliary water tank. A water pumping device in operation pumps and discharges water in a first water storage space of the main water tank into a second water storage space of the auxiliary water tank. A water guiding device in operation outputs water from the second water storage space to a preset position. The water pumping device in operation can supply water to the auxiliary water tank as needed. The main water tank does not discharge water into the auxiliary water tank when the water pumping device is not in operation. As a result, the water amount in the auxiliary water tank no longer increases.