A washing machine and/or a fluid flow structure for a washing machine wash tank is provided. The wash tank is generally rectangular and includes a bottom wall, two side walls and two end walls extending upwardly from said bottom wall. The wash tank further includes at least one flow directional opening in at least one of the walls. In a preferred embodiment, the wash tank includes a plurality of flow directional openings positioned along one of the side walls of the wash tank. A fluid flow structure is located within said wash tank, which includes a fluid flow guide surface, and a support for said guide surface. The guide surface includes an expansion structure that is designed to counteract expansion of the guide surface that occurs during operation of the washing machine. In one embodiment the expansion structure is an expansion slot that engages a portion of the guide surface. As the guide surface expands the expansion slot is pressed against the portion of the guide surface, causing the expansion slot to expand into a relief area associated with the expansion slot at a location generally opposite of the portion of the guide surface.

An apparatus and method for removing support material from a part formed by three-dimensional (3D) printing. The support removal machine contains a tank for submersion of a 3D printed part into a liquid mass. The liquid mass circulates in the tank in a controlled manner such that submerged parts remain centrally suspended in the tank, regardless of the material, density and geometry comprising the part. The part circulates and rotates in conjunction with the rotational flow of the liquid mass for uniform exposure to means of support removal. During rotation, the part may be subjected to multiple means of agitation that include heat, chemical and ultrasonic, in order to optimize energy use and maximize efficiency of the removal of support material.

A washing machine and/or a fluid flow structure for a washing machine wash tank is provided. The wash tank is generally rectangular and includes a bottom wall, two side walls and two end walls extending upward from said bottom wall. The wash tank further includes at least one flow directional opening in at least one of the walls. In a preferred embodiment, the wash tank includes plurality of flow directional openings positioned along one of the side walls of the wash tank. A fluid flow structure is located within said wash tank, which includes a fluid flow guide surface, and a support for said guide surface. The guide surface includes an expansion structure that is designed to counteract expansion of the guide surface that occurs during operation of the washing machine. In one embodiment the expansion structure is an expansion slot that engages a portion of the guide surface. As the guide surface expands the expansion slot is pressed against the portion of the guide surface, causing the expansion slot to expand into a relief area associated with the expansion slot at a location generally opposite of the portion of the guide surface.

An anti-splash cleaning machine is capable of providing a cleaning liquid with an impact pressure to the surface of a mechanical part, wherein a cleaning box body is equipped with a box cover and a cleaning space is provided to receive parts to be cleaned. The machine further comprises a cleaning liquid tank and a cleaning gun comprising a cleaning liquid inlet, a compressed air inlet, a cleaning gun body, a liquid suction pipe fitting for connecting the cleaning liquid tank to the cleaning liquid inlet of the cleaning gun, and a liquid discharge pipe fitting for connecting the cleaning liquid tank to the liquid outlet of the cleaning box body. The cleaning gun body is provided with an air flow channel, a liquid flow channel and a mixed flow channel and the air flow channel and the liquid flow channel converge into the mixed flow channel.

A system for washing mechanical parts polluted with hydrocarbons is described, which includes a) a cleaning fluid; b) an enzymatic complex that catalyzes the oxidative degradation of hydrocarbons coating the mechanical parts, wherein said enzymatic complex is located within a filter cartridge; and, c) a washing sink. By using the described system, daily degradation efficiency from 250 to 500 g of transformed hydrocarbons in CO.sub.2 and H.sub.2O is achieved. Moreover, a method to perform washing of mechanical parts is described.

A pneumatic pressure pulse cleaning machine includes a container body, which has a rear side to which a container cover is rotatably mounted and also has an interior space in which a pipe assembly that includes pipes connected together to form a grating configuration is received. The pipe assembly has a plurality of through holes formed therein and facing upwards. A support board is received in the interior space and arranged above the pipe assembly so that an article disposition zone is provided in the container body above the support board. The pipe assembly includes a joint, which is connectable with a tube for connection with a pneumatic pressure source. Articles to be washed are positioned on the support board. The pneumatic pressure source is activated to generate pneumatic pressure pulses that are ejected through the through holes to impinge and thus clean the articles.

A recycling cleaning device includes a tub body, a sucking device and a tube. The tub body has a receiving space, an inlet communicating with the receiving space and a communication portion for communicating with the receiving space. The tub body is for arrangement on a barrel body and defines at least one passage with the barrel body. The sucking device is for disposed in the barrel body. The tube is connected with the sucking device and has an outlet. When the sucking device is disposed in the barrel body, the tube extends from an interior of the barrel body outside the barrel body through one of the passages, and the outlet is controllably arranged substantially toward the inlet of the tub body.

A cleaning basket (120) for cleaning a breathing apparatus (112) is proposed. The cleaning basket (120) comprises at least one basket rack (140). Furthermore, the cleaning basket (120) comprises at least one mask holder (122) for holding at least one protective breathing mask (114) in the cleaning basket (120). Furthermore, the cleaning basket (120) comprises at least one suction element (156) which has at least one suction opening (160) and is configured to extend into the protective breathing mask (114) held by the mask holder (122). The suction element (156) is configured to be charged with negative pressure and to suck cleaning fluid out of at least one interior space (148) of the protective breathing mask (114) into the suction opening (160). Furthermore, a cleaning system (110) with the cleaning basket (120) and a cleaning device (118), and a method for cleaning the breathing apparatus (112) are proposed.

An apparatus for cleaning drywall tools includes a structure supporting two tanks, one above the other. The lower tank holds a supply of rinse water that includes a water-clarifying agent. A water-pumping assembly pumps the rinse water from the lower tank for pressurized tool-rinsing above the upper tank, with the upper tank collecting the used rinse water. After mud has settled from the used rinse water, thereby resulting in a body of clarified rinse water disposed above the settled mud, an upper water-draining assembly on the upper tank drains the clarified rinse water back to the lower tank for reuse or removal. A user lowers an adjustable inlet on the upper water-draining assembly to a position within the body of clarified rinse water so that only the clarified rinse water drains, without the settled mud. The apparatus is preferably work-bench size in order to enable contemporaneous tool cleaning by two users.

A recycling cleaning device includes a tub body, a sucking device and a tube. The tub body has a receiving space, an inlet communicating with the receiving space and a communication portion for communicating with the receiving space. The tub body is for arrangement on a barrel body and defines at least one passage with the barrel body. The sucking device is for disposed in the barrel body. The tube is connected with the sucking device and has an outlet. When the sucking device is disposed in the barrel body, the tube extends from an interior of the barrel body outside the barrel body through one of the passages, and the outlet is controllably arranged substantially toward the inlet of the tub body.