The present disclosure provides a reactor cleaning apparatus including: a fixing part having a partial region inserted into a hole formed in an upper portion of a reactor to be coupled to the reactor and fixing a pipe; the pipe inserted into a hole formed in the fixing part, protruding downward from the fixing part, and having a length adjustable in a vertical direction; a spray nozzle provided at a lower end of the pipe; and a screener provided on a lower side surface of the pipe, and a reactor cleaning method using the same.

A method for retrieving a mobile platform from inside a tank having an energetic substance includes configuring a retrieval carrier to have an intermediate span for which a majority of a cross-sectional area includes a braided synthetic fiber rope having a porosity of at least ten percent and an elastic compressibility sufficient to reduce the porosity of the braided synthetic fiber rope by at least fifty percent. The intermediate span does not have a fluid tight passage enabling fluid communication between a location outside of the tank and the mobile platform. The method further includes configuring a retrieval assembly to have an energetic substance extractor that has opposing surfaces defining a passage, passing the intermediate span through the passage, and compressing the intermediate span between the opposing surfaces to extract a majority of the residue of the liquid energetic substance retained by the intermediate span upon entering the passage.

A method for retrieving a mobile platform from inside a tank having an energetic substance includes configuring a retrieval carrier to have an intermediate span for which a majority of a cross-sectional area includes a braided synthetic fiber rope having a porosity of at least ten percent and an elastic compressibility sufficient to reduce the porosity of the braided synthetic fiber rope by at least fifty percent. The intermediate span does not have a fluid tight passage enabling fluid communication between a location outside of the tank and the mobile platform. The method further includes configuring a retrieval assembly to have an energetic substance extractor that has opposing surfaces defining a passage, passing the intermediate span through the passage, and compressing the intermediate span between the opposing surfaces to extract a majority of the residue of the liquid energetic substance retained by the intermediate span upon entering the passage.

An autonomous pool cleaner includes a main body, a filter that is removably coupled to the main body, and an edge engagement assembly. The main body includes a top, a bottom, and one or more peripheral walls that extend between the top and the bottom. The filter is accessible for removal or installation via a particular peripheral wall of the one or more peripheral walls. The edge engagement assembly is configured to extend beyond the particular peripheral wall of the main body and removably secure the autonomous pool cleaner to an edge of a swimming pool so that the filter is accessible and vertically removable when the autonomous pool cleaner is secured to the edge.

A container for cleaning and sterilizing a menstrual cup includes a vessel with an inner cavity made of elastic material having a bell-shaped portion for collecting menses and gripping means for insertion and removal during menstrual cycle; a lid closing an open-top, the vessel and the lid being made of materials suitable for exposure to microwave radiation, holding means for connecting the menstrual cup to the lid with the gripping means, wherein the lid is reversible for fitting on the open-top in two mounting positions, the first mounting position with the holding means directed towards the inner cavity such that, when attached to the lid, the menstrual cup projects at least partially into the inner cavity, and the second mounting position with the lid reversed and the holding means directed away from the inner cavity such that, when attached to the lid, the menstrual cup projects outwardly.

A container for cleaning and sterilizing a menstrual cup includes a vessel with an inner cavity made of elastic material having a bell-shaped portion for collecting menses and gripping means for insertion and removal during menstrual cycle; a lid closing an open-top, the vessel and the lid being made of materials suitable for exposure to microwave radiation, holding means for connecting the menstrual cup to the lid with the gripping means, wherein the lid is reversible for fitting on the open-top in two mounting positions, the first mounting position with the holding means directed towards the inner cavity such that, when attached to the lid, the menstrual cup projects at least partially into the inner cavity, and the second mounting position with the lid reversed and the holding means directed away from the inner cavity such that, when attached to the lid, the menstrual cup projects outwardly.

A tool for removing particle residue from a cylindrical container includes a handle, configured to be grasped in the hand of a user to position the tool and to rotate the tool around an axis of rotation aligned substantially parallel to the handle, and at least one blade section extending from the handle at an angle to the axis of rotation. A user manipulates the handle in use to cause the tool to rotate about the axis of rotation so that the leading edge of the blade section moves into and through compacted particle residue within the cylindrical container.

A tool for removing particle residue from a cylindrical container includes a handle, configured to be grasped in the hand of a user to position the tool and to rotate the tool around an axis of rotation aligned substantially parallel to the handle, and at least one blade section extending from the handle at an angle to the axis of rotation. A user manipulates the handle in use to cause the tool to rotate about the axis of rotation so that the leading edge of the blade section moves into and through compacted particle residue within the cylindrical container.

An oil tank cleaning ball serves for attracting metal impurities within an oil tank, and has a function of checking whether the oil tank is dirty. The oil tank cleaning ball comprises an enclosing body made of non-magnetic material, but the magnetic lines can pass through the enclosing body, an outer surface of the enclosing body being uneven and rough, having sags and crests so as to expand an area of the outer surface for attracting impurities; a magnetic metal sheet enclosed within and fixed by the enclosing body; the magnetic lines emitting from the magnetic metal sheet can pass through the enclosing body so as to attract the impurities within the oil tank. Amount of impurities on the oil tank cleaning ball is used to decide whether an interior of the oil tank is dirty.

An oil tank cleaning ball serves for attracting metal impurities within an oil tank, and has a function of checking whether the oil tank is dirty. The oil tank cleaning ball comprises an enclosing body made of non-magnetic material, but the magnetic lines can pass through the enclosing body, an outer surface of the enclosing body being uneven and rough, having sags and crests so as to expand an area of the outer surface for attracting impurities; a magnetic metal sheet enclosed within and fixed by the enclosing body; the magnetic lines emitting from the magnetic metal sheet can pass through the enclosing body so as to attract the impurities within the oil tank. Amount of impurities on the oil tank cleaning ball is used to decide whether an interior of the oil tank is dirty.