A maintenance apparatus for a fluid ejection and vaporization device and a fluid ejection and vaporization device containing the maintenance apparatus. The maintenance apparatus includes a movable wiper blade, the wiper blade being attached to an arm on one end of the arm, wherein a distal end of the arm is attached to an air operated mechanism for moving the arm and for causing a sweeping movement of the wiper blade over an ejection head in the fluid ejection and vaporization device.

A tensioning arrangement for an aerosol dispenser is presented where the tensioning arrangement has a conveying tube; an elastic member arranged to store mechanical energy from a substantially axial tensioning movement of the conveying tube; a rotatable member; a transmission mechanism configured to transmit a tensioning rotation of the rotatable member to the tensioning movement of the conveying tube, wherein the transmission mechanism has a cam profile and a cam follower arranged to follow the cam profile, wherein the cam profile has at least one priming structure; and wherein the tensioning arrangement is configured such that the conveying tube makes a temporary priming movement towards an initial position when the cam follower passes each priming structure during the tensioning movement of the conveying tube by means of the tensioning rotation of the rotatable member. An aerosol dispenser is also provided.

The present disclosure provides a nozzle cleaning device, a doctor blade replacing apparatus and a doctor blade replacing method. The doctor blade replacing apparatus includes a first doctor blade box, a second doctor blade box, a transferring assembly and a clamping and conveying mechanism. The transferring assembly includes a first tray which is disposed between the first doctor blade box and the second doctor blade box and a pushing assembly which is configured to push the first doctor blade in the first doctor blade box to the first tray and push the second doctor blade on the first tray into the second doctor blade box. The clamping and conveying mechanism is disposed between the first tray and the nozzle cleaning device for clamping and conveying the first doctor blade and the second doctor blade between the first tray and the nozzle cleaning device.

A nozzle cleaning device and a method of using the same are disclosed. The nozzle cleaning device has a cavity and a sealed chamber formed therein. The sealed chamber is provided with a cleaning tank, motors, driving bearings connected to the motors, rotation shafts connected to the driving bearings, a cleaning block fitted on the rotation shafts disposed above carrier portions, a heating means, and an ultrasonic wave device, so as to thoroughly clean nozzle portions which the mechanical procedure cannot clean, achieving a better cleaning effect, and being easier to use.

A spray booth for spraying pieces to be painted with a painting product includes a system that conveys the pieces to be painted inside the booth, a supplying circuit that supplies a painting product or solvent to painting tools, a plenum, a mobile wall providing access to the inside of the spray booth, optionally a reading system for the pieces to be painted, optionally a filtering system, a plurality of spraying tools that include one or more a spray guns each placed on an independent arm moving on a plane and optionally in a vertical direction, one or more cleaning stations, placed in correspondence of the mobile wall and provided with a drawer that is mobile between rest and a cleaning positions and that includes a painting product or solvent draining tube having a mouth, a slot for supplying compressed air, and a brush for brushing the spray guns.

An aeration nozzle is provided, having on one end an air supply port (16a) connected to an aeration pump (13) and a waste water suction port (17) for suctioning waste water in a processing tank (3, 4), and having a micro-bubble generation unit (18), provided facing the air supply port, for mixing air supplied by the air supply port and waste water suctioned from the waste water suction port and generating micro-bubbles (9), wherein a plurality of blades of cylindrical micro-bubble generators (19) included in the micro-bubble generation unit (18) is configured such that tip ends of the blades are formed so as to face one another around the center of the cylindrical micro-bubble generators (19a, 19b); and by being formed from an elastic member (such as rubber), the tip ends of the blades are configured so as to bend with the base ends as starting points.

An electro-anti deposit device is coupled to an irrigation pipe for removing mineral deposit from drippers of the pipe. The electro-anti deposit device includes an engine configured to move the electro-anti deposit device along the pipe. The electro-anti deposit device also includes a mineral deposit removal module. The mineral deposit removal module includes a water container, a battery, and two electrodes. The water container may be configured to create an ionic environment at a dripper. The dripper may be covered with the mineral deposit. The battery may be configured to generate electric current. The two electrodes may be connected to two poles of the battery with a space separating tips of the two electrodes.

A nozzle through which a liquid coolant is discharged is provided with an outer tube, a projecting member and an inner tube disposed inside the outer tube, and an elastic body disposed between the inner tube and a discharge port of the outer tube. If foreign matter accumulates on a nozzle opening of the inner tube, the elastic body is compressed by the inner tube under the pressure of the coolant, so that the inner tube moves toward the discharge port. Consequently, the projecting member penetrates the nozzle opening, thereby automatically removing the foreign matter accumulated on the nozzle opening.

A housing selectively encloses a nozzle. The housing has a body that partially defines an interior space in which the nozzle is configured to be disposed. The housing also includes a cover assembly that selectively blocks a first aperture of the body and further defines the interior space. Additionally, the housing has a piston that is disposed in the interior space and secured to the nozzle. The piston defines a gas inlet, a liquid inlet, and an outlet fluidly connected to both the gas inlet and the liquid inlet. The housing further includes a biasing member attached to the piston. The biasing member is configured to exert a biasing force that biases the nozzle to a retracted position. The biasing member is further configured such that when pressurized gas flows through the body, the biasing force is overcome such that the nozzle is disposed in an extended position.

A cartridge for an electrostatic spraying device according to the present invention is a cartridge for an electrostatic spraying device, the cartridge comprises a storage bag having a storage section in which a liquid composition is stored, the storage section is surrounded by a joint portion formed by joining a pair of laminates, each of the laminates comprises an innermost layer on the joint portion side, an outermost layer on a side opposite to the innermost layer, and a barrier layer between the innermost layer and the outermost layer, and the liquid composition comprises 50 mass % or more of a volatile liquid agent selected from alcohols and ketones.