The present disclosure provides an oral irrigator having water spray switching function, which includes a body, a nozzle and a path switching mechanism. The nozzle is provided with a first path and a second path, and the path switching mechanism is configured to communicate one of the first path and the second path with an outlet end of a piston assembly inside the body of the oral irrigator, and disconnect the other one of the first path and the second path from the outlet end of the piston assembly. The nozzle has a water outlet communicating with the first path and the second path. Water sprays from the water outlet are different when the first path or the second path is communicated with the outlet end of the piston assembly inside the body. The oral irrigator of the present disclosure can realize water spray switching without changing the nozzle.

Provided is a sample pretreatment device configured to apply, to the surface of a sample, a solution in which a predetermined substance is dissolved or dispersed. In order to properly and efficiently unclog a nozzle due to the deposition of the crystal of a matrix substance, the device includes a spray unit (3) including a solution tube (32) for the solution to pass through, a gas tube (33) for a spray gas to pass through, and a nozzle part (30) configured to spray the solution arriving at the terminal end of the solution tube by ejection of the spray gas through the gas tube, as well as a cleaning liquid supplier (4, 41) configured to put a cleaning liquid on an opening of the nozzle part from outside the spray unit.

Provided is a wet atomizer for processing all-solid-state battery raw materials while ensuring sealing property, operability after completion of processing, and maintenance property. The wet atomizer includes a liquid supply pump for supplying the all-solid-state battery raw materials, a pressure intensifier for pressurizing the all-solid-state battery raw materials supplied from the liquid supply pump, a high-pressure filter for filtering the all-solid-state battery raw materials pressurized by the pressure intensifier, a chamber for injecting the all-solid-state battery raw materials filtered by the high-pressure filter, a sealing member for sealing the space for processing the all-solid-state battery raw materials, and an inert gas supply unit for supplying an inert gas to the sealing member.

A paint sprayer includes an end bell, a motor connected to the end bell, a pump drive connected to the end bell, a pair of protrusions attached to an extending from the end bell such that each protrusion is cantilevered from the end bell, and a pump assembly comprising a pair of mounting holes and containing a piston. The pair of mounting holes is adapted to receive and slide onto the pair of protrusions to mount the pump assembly on the end bell as well as slide off of the pair of protrusions to remove the pump assembly from the end bell. The pump drive is configured to covert rotational motion output by the motor to reciprocal motion. The pump assembly is configured to pump paint when reciprocated by the pump drive while mounted on the end bell.

Disclosed is a device for pressurizing a viscous fluid contained in a drum, the device includes a follower plate vertically movable along a perpendicular axis passing through the center of the drum, the follower plate: is movable between a first position outside the drum and a second position inside the drum, to exert pressure on the viscous fluid; has a transfer port intended to be connected to a means of pumping capable of transferring the pressurized fluid. The device further includes an energy storage unit and restoration connected to the support system, the storage unit being capable of storing energy under the effect of the pressure exerted by the support system and of restoring it to the follower plate in order to maintain the viscous fluid under pressure.

A spray gun alignment system precisely aligns a spray gun of a container spray machine for precision application of container coatings. The spray gun alignment system generates a spray gun alignment jig including a container holder adapter and a spray gun adapter. The container holder adapter is inserted into a container holder of the spray machine, and the spray gun adapter is fastened to the spray gun. The spray gun alignment jig is configured to position the spray gun in proper alignment with respect to the container holder.

A fluid dispensing device includes a housing and a reciprocating piston fluid pump coupled to the housing. The reciprocating piston fluid pump includes a piston disposed within a cylinder. The piston is configured to pressurize at least one pumping chamber. A motor is coupled to the housing and connected to the reciprocating piston fluid pump to actuate the piston. A wobble assembly connects the motor to the piston of the reciprocating piston fluid pump. A spray tip connected to an outlet of the at least one pumping chamber.

A pumping assembly comprises: a motor (24) including a stator and a rotor, the rotor configured to rotate relative the stator on a pump axis (PA); a drive mechanism (24) connected to the rotor, the drive mechanism (24) configured to receive a rotational output from the rotor and convert the rotational output into a linear input along the pump axis to cause pumping of the fluid; and a piston (34) connected to the drive mechanism (26) to receive the linear input and disposed coaxially with the drive mechanism (26) and the rotor, wherein the piston (34) is configured to reciprocate axially along the pump axis to pump fluid.

A spray gun includes a gun body and valves configured to control flow of material and air through the gun body. A trigger is mounted to the gun body and is disposed relative to the valves such that the trigger actuates the valves in sequence to begin air flow and material flow. A sensor senses when the trigger is in an actuated state and the sensor causes a pump to begin pumping material to the spray gun. Release of the trigger causes the trigger to leave the actuated state. A detent mechanism holes the trigger in a detent state intermediate the actuated state and a resting state. The sensor does not sense the trigger with the trigger in the detent state. The trigger maintains the valves open with the trigger in the detent state.

A sprayer for spraying fluid includes a pump, a motor that drives the pump, a drive cycle indicator, a wireless module configured to send and receive information, and control circuitry. The drive cycle indicator outputs an indication of cycle status of the pump. The control circuitry is configured to receive the plurality of cycle status indications of the pump, determine a plurality of output values representing paint spray fluid output volume over a plurality of time windows based on the plurality of cycle status indications of the pump, store the plurality of output values in memory, and cause the wireless module to transmit one or more of the stored plurality of output values externally from the sprayer.