A cleaning vehicle generally has a grey water reservoir having a pre-filter; an aspiration conduit leading into the grey water reservoir upstream from the pre-filter and a vacuum pump adapted to create a vacuum inside the grey water reservoir to draw grey water; a vortex separation subsystem connected downstream from the pre-filter; a filtration bag subsystem connected downstream from the vortex separation subsystem; a filtrate reservoir connected downstream from the filtration bag subsystem; a high pressure hose having an end connected downstream from the filtrate reservoir and another end having a high pressure spray nozzle; a filtrate path extending from the grey water reservoir to the high pressure spray nozzle via the pre-filter, the vortex separation subsystem, the filtration bag subsystem and the high pressure hose; and at least one pump adapted to entrain a flow of fluid along the filtrate path.

An electric pressure washer includes an electric motor operably connected to a pump, one or more removable detergent tanks, a removable accessory bucket in which a spray gun, high pressure hose, and other accessories may be stored, and a foot pedal for facilitating operator control of one or more features of the electric pressure washer during use. The electric pressure washer may also include a folding handle for facilitating storage and transport.

A jetter system for removing debris such as leaves, branches, mud, and trash from sewer pipes and from other types of pipes is disclosed. The jetter includes a rechargeable battery that provides direct current (DC), a DC/AC converter, and an AC motor that drives a water pump, or the like means for improved powering and debris removal.

A working machine may be provided with: a case configured to store water therein; and a working machine body configured to discharge water supplied from the case, in which the working machine body is detachably mounted on an upper surface of the case.

A hand-held personal hygiene device includes a main body having an upper end, a lower end, and a pump therein. The pump is configured to pump water or another fluid from an inlet port at the upper end to an outlet port at the lower end. A reservoir has a lower base configured to removably seat in the upper end of the main body to engage and open a self-closing valve with the inlet port of the main body. A tubular nozzle member has a lower end comprising one or more nozzle outlets and an upper end configured to be removably secured to the outlet port of the main body causing liquid pumped by the pump to flow through the tubular nozzle member to the one or more nozzle outlets. The reservoir and the main body may be aligned to form a liquid flow path that may be held vertically to allow gravity flow from the reservoir to the pump.

A method for stripping a coating off of a blade includes discharging liquid nitrogen through a nozzle onto the blade at a coating to cause lifting of the coating from a substrate of the blade and traversing the nozzle along the blade to cause peeling of the coating off of the substrate of the blade as the nozzle traverses the blade.

A pump assembly and a high-pressure cleaning apparatus, the pump assembly includes a motor assembly, a motor housing for receiving the motor assembly, a transmission assembly driven by the motor assembly, a pump, and a pipe assembly connecting the motor housing and the pump. Mutually independent heat dissipation portions are provided at two sides of the motor housing.

A system for combining and spraying fluids that includes a principal reservoir for holding a carrier fluid; an electric pump in communication with the principal reservoir; a power source for energizing the pump selectable between a rechargeable 12-volt battery and a 110-volt AC line; at least one auxiliary reservoir for holding an auxiliary fluid to be controllably mixed with carrier fluid being drawn from the principal reservoir; a selector valve for selecting which if any of the auxiliary fluid(s) are to be combined with the carrier fluid; a Venturi tube for combining streams of carrier fluid and selected auxiliary fluid(s) in a predetermined ratio which may be varied as desired; and a spray wand in fluid communication with the Venturi tube for discharging the selected fluids.

A system and device for remote control operated power washing includes a wireless radio transmitter and a receiver in communication with the transmitter. The transmitter in preferred embodiments has a water flow rate selector which provides for selecting between various water flow rate settings. When the receiver is electronically connected to a motor which is physically connected to a pump supplied with a water source and a hose, and at least the motor has been started, using the transmitter to select between the various water flow rate settings enables the water flow rate output by the hose to change without having to change attachments that might be utilized in conjunction with a power washer.

A diesel particulate filter cleaning machine. The filter is filed with a soaking solution comprising water and a surfactant and retained within the filter during a soaking interval. The filter is placed in a rinsing station after the soaking interval. A rinse water head positioned above an upper surface of the filter supplies rinse water into the filter, the rinse water passes through and drains from the filter. During the rinsing process, an actuator moves the rinse water head relative to the upper surface of the filter. A drain receives the rinse water after draining from the filter.