An outer peripheral end of the substrate is held with a plurality of chuck pins provided at a spin plate abutting against a plurality of portions of the outer peripheral end of the substrate, and the spin plate is rotated about a rotation axis. A cleaning head is moved by a head moving mechanism while being pressed against a back surface of the substrate held by the plurality of chuck pins by the head moving mechanism, and foreign matter on the back surface of the substrate is removed by polishing with the cleaning head. A reaction force against a load applied to the back surface of the substrate by the cleaning head is generated in the substrate by auxiliary pins. Alternatively, the back surface of the substrate, which has been cleaned or is being cleaned by the cleaning head, is further cleaned by a cleaning brush.

The present invention relates to a scraper device for centrifuge comprising a tubular runner mounted on a fixed base with the capacity to rotate around and slide along a vertical central axis through the action of a rotation actuator and an up and down actuator, respectively, a scraper assembly including a blade and an blow nozzle fixed at a lower end of the tubular runner, a tubular rod coaxially installed inside the tubular runner and fixed at its upper end to the fixed base by means of a support, and upper and lower gas pipes telescopically coupled to one another, located inside the tubular rod, fixed to the tubular rod and to the tubular runner, respectively, and connected to a pressurized gas supply device and to the blow nozzle, respectively.

The present invention relates to a scraper device for centrifuge comprising a tubular runner mounted on a fixed base with the capacity to rotate around and slide along a vertical central axis through the action of a rotation actuator and an up and down actuator, respectively, a scraper assembly including a blade and an blow nozzle fixed at a lower end of the tubular runner, a tubular rod coaxially installed inside the tubular runner and fixed at its upper end to the fixed base by means of a support, and upper and lower gas pipes telescopically coupled to one another, located inside the tubular rod, fixed to the tubular rod and to the tubular runner, respectively, and connected to a pressurized gas supply device and to the blow nozzle, respectively.

A method for removing oxide materials from a crack of a metallic workpiece comprises: infiltrating an alkali solution into the crack in a pressurized atmosphere or an ultrasonic environment; applying an energy to the crack to react the oxide materials with the alkali solution and form a resultant material; and rinsing the resultant material with an acid solution to remove the resultant material from the crack. The method is easier to penetrate into the inside of the cracks, in particular suitable for cleaning narrow and deep cracks.

A method for removing oxide materials from a crack of a metallic workpiece comprises: infiltrating an alkali solution into the crack in a pressurized atmosphere or an ultrasonic environment; applying an energy to the crack to react the oxide materials with the alkali solution and form a resultant material; and rinsing the resultant material with an acid solution to remove the resultant material from the crack. The method is easier to penetrate into the inside of the cracks, in particular suitable for cleaning narrow and deep cracks.

Systems and methods for cleaning and disinfecting contaminated tube lumens are described herein. One system includes an ultraviolet light source and a sterile fluid reservoir fluidly coupled to a liquid light guide. The system is configured to allow simultaneous access and propagation of ultraviolet light and fluid in a tube having a lumen to be cleaned and disinfected. The light guide can be moved inside the tube and simultaneously emit ultraviolet light through its walls and at its distal end into the interior of the contaminated tube. A flush of sterile fluid from an open end of the liquid light guide removes debris and micro-organism detached from the inner surface during light exposure. The sterile fluid can be a high refractive index ionic solution promoting light propagation.

Systems and methods for cleaning and disinfecting contaminated tube lumens are described herein. One system includes an ultraviolet light source and a sterile fluid reservoir fluidly coupled to a liquid light guide. The system is configured to allow simultaneous access and propagation of ultraviolet light and fluid in a tube having a lumen to be cleaned and disinfected. The light guide can be moved inside the tube and simultaneously emit ultraviolet light through its walls and at its distal end into the interior of the contaminated tube. A flush of sterile fluid from an open end of the liquid light guide removes debris and micro-organism detached from the inner surface during light exposure. The sterile fluid can be a high refractive index ionic solution promoting light propagation.

A fake eyelash cleaning assembly includes a cleaning tank for containing a cleaning solution thereby facilitating fake eyelashes to be submerged in the cleaning solution for cleaning. An ultrasonic emitter is integrated into the cleaning tank to emit ultrasonic sound waves into the cleaning solution for dislodging makeup from the fake eyelashes to clean the fake eyelashes. Additionally, the cleaning tank is supported on a housing. A first drawer is slidably integrated into the housing and the first drawer is foraminous to pass air therethrough. A blower is positioned within the housing to blow air into the first drawer for drying the fake eyelashes when the fake eyelashes are positioned in the first drawer. A second drawer is slidably integrated into the housing to store the fake eyelashes when they have been dried.

A fake eyelash cleaning assembly includes a cleaning tank for containing a cleaning solution thereby facilitating fake eyelashes to be submerged in the cleaning solution for cleaning. An ultrasonic emitter is integrated into the cleaning tank to emit ultrasonic sound waves into the cleaning solution for dislodging makeup from the fake eyelashes to clean the fake eyelashes. Additionally, the cleaning tank is supported on a housing. A first drawer is slidably integrated into the housing and the first drawer is foraminous to pass air therethrough. A blower is positioned within the housing to blow air into the first drawer for drying the fake eyelashes when the fake eyelashes are positioned in the first drawer. A second drawer is slidably integrated into the housing to store the fake eyelashes when they have been dried.

This washing machine for a railway vehicle includes a water texturing system, mixing water with particles able to produce textured water having super-hydrophoby properties making it possible to implement a lotus cleaning effect on the surface on which the textured water flows; a textured water spraying system, fed by the water texturing system and using at least one appropriate spraying device to spray the textured water on a surface of the railway vehicle to be cleaned.