A hot melt adhesive applicator with one or more air outlets configured to direct a pressurized heated air stream transversely toward hot melt adhesive discharged through a discharge port of the applicator. A controller can switch between two modes, a discharge completion mode where the heated air stream pressure is temporarily increased to automatically eliminate or reduce hot melt adhesive stringing and an application mode where the heated air stream assists in heating or maintaining the hot melt adhesive at or above melt temperature.

The present invention relates to a digital mist nozzle structure that is connected to a general pipeline and continuously sprays water or a chemical solution in the form of a mist, so that it can be efficiently used for indoor humidification or entrance disease prevention. In order to accomplish the above object, the present invention provides a digital mist nozzle structure including: a pipe connector formed in a T shape and configured to be connected to a pipeline; a nozzle body connected to the pipe connector; an ultrasonic vibration nozzle coupled to one end of the nozzle body; and a nozzle cap fastened to the nozzle body in order to prevent the ultrasonic vibration nozzle from being separated.

A spray head has an inlet in fluid communication with a plurality of nozzles. The nozzles are adapted to produce, in use, a jet of fluid which is directed toward a respective impingement surface portion. The jet of fluid impacts on the respective impingement surface portion and breaks into a stream of droplets. The stream of droplets has an elongate transverse cross-section.

The present disclosure includes a method for producing a printed circuit board having at least one coating includes mixing a first component with a second component of a two component coating system to form a coating mixture by means of a dynamic mixer or by means of a static-dynamic mixer. The method also includes supplying the coating mixture to an output unit, and coating the printed circuit board by outputting the coating mixture using the output unit onto the printed circuit board. The output unit is moved automatically in at least one, two, or three dimensions relative to the printed circuit board. The mixer is connected with the output unit in such a manner that it is moved together with the output unit relative to the printed circuit board. The present disclosure also includes a coating head for performing the method.

The spray nozzle includes a body, which has a fluid inlet region and a fluid outlet orifice, and which houses: a core, internally defining a passage, of increasing cross-section, in communication with the outside substantially at the point of its smallest cross-section, resulting in a Venturi effect, an insert, provided with an outlet slot defining the opening angle of the nozzle, the core and the insert being at a distance from one another and forming therebetween a working chamber.

The nozzle further includes a splitter, housed in the working chamber, arranged to form an obstacle to the flow of the fluid, the splitter having two axial orifices, each forming a fluid passage, on either side of a radial plane, such that the two streams passing through the orifices of the splitter combine and then impinge the surface of the outlet slot of the insert, ultimately generating a flat jet.

Described herein are methods for continuous production of an exfoliated two-dimensional (2D) material comprising passing a 2D material mixture through a convergent-divergent nozzle, the 2D material mixture comprising a 2D layered material and a compressible fluid. The method of the present disclosure employs physical compression and expansion of a flow of high-pressure gases, leaving the 2D layered material largely defect free to produce an exfoliated 2D layered in a simple, continuous, and environmentally friendly manner.

Provided is a cleaning device, comprising a wiper, a first clamping plate, a second clamping plate, a first elastic clamp and a second elastic clamp. The first clamping plate comprises a first plate body, a first bent portion and a first end portion. The first bent portion extends between the first plate body and the first end portion in a bent manner. The second clamping plate comprises a second plate body, a second bent portion and a second end portion. The second bent portion extends between the second plate body and the second end portion in a bent manner. The wiper is positioned between the first clamping plate and the second clamping plate. The cleaning device is moved relative to the nozzle to wipe the nozzle for cleaning. The wiper will not generate pollution and basically causes no wear to the nozzle.

The invention relates to a cutting tool, in particular a milling tool, which comprises a tool body on which at least one cutting edge is provided. A coolant supply channel, from which at least one nozzle channel branches off fluidically, extends inside the tool body. The nozzle channel is configured to conduct coolant onto the cutting edge. A flow cross-section of the coolant supply channel is furthermore reduced in one flow direction.

A spray head includes a nozzle, a sealing gasket, a first nut, and a screw. The nozzle includes an inlet portion, an outlet portion extending from an end of the inlet portion along an axial direction, and a first through hole penetrating the inlet portion and the outlet portion along the axial direction. The first through hole defines an opening on a surface of the outlet portion facing away from the inlet portion. The opening is rectangular. The sealing gasket is sleeved on the inlet portion. The first nut is sleeved on the nozzle and receiving the sealing gasket. The screw is located on a side of the sealing gasket facing away from the outlet portion and is engaged with the first nut. A second through hole penetrates the screw communicating with the first through hole. The disclosure also provides a cleaning device having the spray head.

A shower includes a main body and a control member. The main body includes an inner wall composed an accommodating space, an inlet opening, multiple outlet openings, an inlet bore and multiple outlet bores; the inlet opening communicates with the inlet bore through an inlet channel in the main body; each of the outlet openings communicates with a corresponding one of the outlet bores through an individual outlet channel; the control member is positioned in the accommodating space, wherein the control member could be operated to select one of the outlet opening being able to outlet.