A nozzle assembly including water and gas supply units, a jet pipe having a nozzle for spraying water and/or gas, and a supply pipeline. The supply pipeline includes a first end fluidly connected with the nozzle and a second end fluidly connected with the water and gas supply units. The water supply unit has an open state, in which water is supplied to the supply pipeline, and a closed state. The gas supply unit has an open state, in which a gas is supplied to the supply pipeline, and a closed state. After the water supply unit is switched from the open state to the closed state, the gas supply unit is automatically switched from the closed state to the open state and is maintained in the open state for a preset time, after which the gas supply unit is switched to the closed state.

A cleaning device for cleaning an atomizer, in particular a rotary atomizer, is provided. The cleaning device includes a wet cleaning station having at least one cleaning nozzle for the wet cleaning of the atomizer with a cleaning fluid. The atomizer is introduced into the wet cleaning station in an introduction direction. The cleaning nozzle has a rotatable cleaning trunk for dispensing the cleaning fluid. The cleaning device, in some embodiments, also includes a dry cleaning station. A corresponding operating method is also provided.

A device for dispensing liquid including an opening for dispensing liquid, a pad for absorbing residual liquid and a removable cap including a shape in the immediate vicinity and opposite the dispensing opening, referred to as a shape for expelling residual liquid, configured to discharge the residual liquid toward the pad when the cap is mounted on the device.

The present invention discloses a slit nozzle cleaning device, the slit nozzle cleaning device comprises a scraper for cleaning the slit nozzle and an auxiliary inserting means, wherein the auxiliary inserting means is configured to guide the scraper into the slit nozzle. With the aid of the auxiliary inserting means, the scraper can enter the slit nozzle smoothly and precisely without the risk of breaking.

The present invention provides a needle clean device and a sealant coater having the device. The needle clean device comprises: two opposing guide tracks (52), two stand bars (56) respectively and slidably installed on the two guide tracks (52), two motors (54) respectively fixedly connected to the two stand bars (56) and two opposing catches (57) respectively located on the two stand bars (56), and dents (69) are respectively located at opposing side surfaces of the two catches (57), and the stand bars (56) can be driven by the motors (54) to move back and forth along the guide tracks (52) to drive the two catches (57) close to or depart from each other and to close the two dents (69) to form a hole or to open the two dents (69). According to the needle clean device located by the present invention, the catches are utilized to automatically scrape the sealant accumulated on the needle without manual clean. The work efficiency is raised and the production quality is promoted.

Embodiments of a self-cleaning jet tube may include an elongate hollow body that is generally rectangular in cross-section and tapered from an open first end to a second end generally opposite the first end. The elongate hollow body may have an upper wall, a lower wall, side walls, a plurality of apertures arranged along the upper wall, an end plate coupled with the walls at the second end, and at least one through-slot. A through-slot may be disposed through the end plate or a wall, between the end plate and a wall, or between two walls. The jet tube may be configured for use with the through-slot(s) open and unblocked, thereby allowing debris to be expelled from the jet tube during operation of the jet veneer dryer. Corresponding systems and method are also provided herein.

An assembly for flushing a dispenser that internally mixes a first composition and a second composition; dispensers including said assemblies are also provided.

In order to prevent the buildup of residual damaged microcapsules within a dispenser, the dispensers described herein are customized to allow for a flushing of the components of the mixture in order to remove any residual microcapsules that have come into contact with the volatile solvent.

A cleaning method for cleaning a droplet ejector, which includes nozzles to eject a particulate material composition liquid, and a nozzle plate bearing the nozzles is provided. The cleaning method includes forming a substantially closed cleaning space outside the nozzles and the nozzle plate; supplying a cleaning liquid to the cleaning space so that the nozzles and the nozzle plate are contacted with the cleaning liquid; and vibrating the cleaning liquid when the nozzles and the nozzle plate are contacted with the cleaning liquid to clean the nozzles and the nozzle plate.

To provide a mist spraying device (1) capable of easily resolving clogging of micropores when they are clogged. The present invention provides a mist spraying device (1) including: a vibration plate (6) having an atomization part in which multiple micropores are formed; a vibration generator (10) for vibrating the vibration plate (6); and a supply part for supplying a liquid to the atomization part (8), the liquid supplied to the atomization part (8) being atomized by vibration of the vibration plate (6) and sprayed, wherein the mist spraying device further includes a heating element (12), and the heating element (12) serves to warm the atomization part.