Abstract: A cleaning apparatus for a surface submerged in a liquid includes: an apparatus body; and an automatic rising-sinking structure, where through an operation of the automatic rising-sinking structure, the apparatus body rises or sinks. The cleaning apparatus for the surface submerged in the liquid automatically rises and sinks through the automatic rising-sinking structure, without being manually searched and lifted out of a water surface. The cleaning apparatus for the surface submerged in the liquid can also automatically rises out of the water surface when a filter box is to be cleaned or machine maintenance is required. The cleaning apparatus for the surface submerged in the liquid reduces a manual labor, shortens searching time, and improves a working efficiency.

Abstract: An underwater debris suction apparatus includes a power device and a filter device. The power device includes a suction component and a power drive device configured to provide power for the suction component. The underwater debris suction apparatus further includes a collection device, and the upper end of the collection device is provided with an opening. The suction component is at least partially located above the filter device or is entirely located in the space of the filter device. During operation of the suction component, unfiltered pool water enters the filter device through a water inlet channel and flows to the side wall of the filter device, so that the filtered water is discharged from the side wall of the filter device, and the debris that cannot be discharged from the side wall of the filter device falls into the collection device.

Abstract: An underwater debris suction apparatus includes a power device and a filter device. The power device includes a suction component and a power drive device configured to provide power for the suction component. The underwater debris suction apparatus further includes a collection device, and the upper end of the collection device is provided with an opening. The suction component is at least partially located above the filter device or is entirely located in the space of the filter device. During operation of the suction component, unfiltered pool water enters the filter device through a water inlet channel and flows to the side wall of the filter device, so that the filtered water is discharged from the side wall of the filter device, and the debris that cannot be discharged from the side wall of the filter device falls into the collection device.