A high-pressure cleaning appliance includes a connection for a liquid source, a delivery pump, a motor for driving the delivery pump, a delivery line through which liquid can be delivered from the connection to a spraying-out opening of the delivery line via the delivery pump, and a valve which is arranged in the delivery line. The motor has two operating states. The two operating states include an off state and an on state. The valve has two valve states, wherein the two valve states include a closed state and an open state. In the closed state, the valve prevents a flow of liquid through the delivery line. In the open state, the valve allows a flow of liquid through the delivery line. The high-pressure cleaning appliance is structurally configured in such a way that the adjustment of the operating state of the motor is possible only if the valve is in the open state.

The present disclosure is a food injection needle cleaning system and method. The food injection needle cleaning system comprises a cleaning fluid tank coupled to high-pressure pump configured to pump cleaning fluid through at least one inlet, a channel, and at least one outlet of a food injection needle to dislodge and remove debris as well as sanitize the needle. The present disclosure comprises a high-pressure chamber configured to secure the food injection needle and seal around the needle such that fluid enters the needle through an inlet of the high-pressure chamber and exits the needle through a waste line.

A paint brush cleaning system includes a housing and a paint brush cleaner attached to the housing. The housing contains solvent that helps clean a paint brush. The paint brush cleaner rotates a wire brush against the bristles of the paint brush and actuates a pump to eject solvent drawn from the housing as the paint brush is moved in translation. The wire brush is coupled to a retractable cord, which rotates the wire brush. A holder is simultaneously coupled to the retractable cord and the pump. When force is exerted on the holder, the retractable cord rotates the wire brush and the pump ejects solvent. A user can insert a paint brush handle through the holder, thus actuating the pump and rotating the wire brush by applying force to the handle. The housing attaches to a user's belt, providing easy access to the paint brush cleaning system.

A mobile surface maintenance machine embodiment includes a mobile body, a solution tank for containing a cleaning fluid, wheels for supporting the mobile body, a maintenance tool(s), an output channel, an electric power source, a first electric motor, and a pressure washer. The pressure washer includes a spray wand, a pressure pump, and a second electric motor. The pressure pump is fluidly coupled to the spray wand and to the solution tank. The pressure pump is configured to pressurize the cleaning fluid supplied to the spray wand. The second electric motor is operatively coupled to and configured to drive the pressure pump. The second electric motor is configured to receive electric power from the electric power source and is commonly powered by the electric power source that provides power to the first electric motor. The second electric motor is separate from the first electric motor.

An apparatus includes: a tank storing a processing liquid; a circulation line; a branch line; a processing part for supplying the processing liquid to a substrate at the branch line; a discharge part for reducing a storage amount of the processing liquid; a supply part for supplying a new processing liquid to the tank; and a controller including: a first determination part for determining whether the storage amount is less than a lower limit value; a first replenishment controller for replenishing the processing liquid to the tank when the storage amount is less than the lower limit value; a calculation part for calculating a replenishment amount of the processing liquid; and a second replenishment controller for reducing the storage amount and replenishing the processing liquid to the tank when a calculation value of the replenishment amount is less than a set value.

Dirt adhering to filter media is more effectively removed. A filter medium recycling apparatus 100 of the present invention includes a water storage tank 8, a booster pump 21 for sucking and pressurizing water stored in the water storage tank 8, a classifying section 3 for classifying filter media, a first jet pump 1A that is driven with water pressurized by the booster pump 21 to suck and jet filter media to be recycled and transport the filter media to the classifying section, a showering device 7 for cleaning the filter media classified by the classifying section 3, and a second jet pump 1B for sucking and jetting the filter media cleaned by the showering device 7.

A docking station for a mobile cleaning robot can include a base portion configured to receive the mobile cleaning robot. The docking station can include a housing connected to the base portion and a pad cleaning system. The pad cleaning system can be connected to the housing and can include a cleaning head engageable with a cleaning pad of the mobile cleaning robot to remove debris from the cleaning pad, the cleaning head can include a nozzle configured to discharge a fluid onto the cleaning pad.

A dental pod that includes a receiver in a form of a cavity for receiving a distal end of a dental handheld device and one or more nozzles on a side of the receiver for cleaning and disinfecting the distal end of the dental handheld device. It also includes a cartridge compartment for receiving one or more cartridges support cleaning, setup, maintenance and other operations of and on the dental handheld device.

A cleaning device includes: a treatment container; a workpiece carrier arranged in the treatment container and configured to hold at least one workpiece; at least one nozzle configured to discharge a cleaning jet directed onto the workpiece carrier and mounted such that the at least one nozzle is moveable on a circulation track about the workpiece carrier and is pivotable about a pivoting axis extending parallel to an axis of rotation of the workpiece carrier; a pivoting device configured to pivot the at least one nozzle; and a controller configured to control a circulating movement of the at least one nozzle on the circulation track and a pivoting movement of the at least one nozzle, such that a specified point on a surface of the workpiece is impacted repeatedly by the cleaning jet at a respectively different angle, within a specified timeframe.

A gas turbine engine system includes a compressor, gas turbine, and combustor including a plurality of late lean fuel injectors supplied with secondary fuel to its interior. The gas turbine engine system includes a wash system in communication with the late lean fuel injectors. The wash system includes a water source; water pump; anti-corrosion agent fluid source with an anti-corrosion agent including a polyamine corrosion inhibitor; anti-corrosion agent supply piping in fluid communication with the anti-corrosion agent fluid source; mixing chamber receiving water and anti-corrosion agent to produce an anti-corrosion mixture in fluid communication with the mixing chamber and the plurality of late lean fuel injectors. Fluid from the mixing chamber including the water, the anti-corrosion agent fluid source, or a mixture thereof is injected, while the gas turbine engine is off-line, into the combustor at at least one of the plurality of late lean fuel injectors.