The invention relates to a method for automatically regulating the size of a nozzle discharge slot of a nozzle assembly, wherein the nozzle assembly comprises a first and a second nozzle lip and a nozzle discharge slot arranged between the nozzle lips for setting in a controlled manner a thickness profile of a conveyable melt. A plurality of adjusting elements, in particular a plurality of adjusting pins, coupled to a respective thermoelement, is arranged on the first nozzle lip, the thermoelements being controllable by the regulation in such a way that the slot can be adjusted by the action of a mechanical force from the respective adjusting element on the first nozzle lip, as a result of the expansion or contraction of the thermoelements. At least two adjusting elements are adjusted simultaneously. The invention further relates to a control and/or regulation system.

A spray tip including a spray tip body and flow control element is provided. The flow control element includes a pre-orifice through which fluid can enter a primary fluid passage of the spray tip body. First and second discharge orifices are provided in a dome-shaped end wall of the spray tip body with each of the first and second discharge orifices being arranged on a respective one of opposing first and second sides of an apex of the dome-shaped end wall. Each of the first and second discharge orifices having an elongated slot-like configuration that maintains a substantially constant width as the respective discharge orifice extends from a first end to a second end and each and each extending a substantially equal distance to either side of the apex of the dome-shaped end wall.

In a coating device wherein a relative movement between an application nozzle located above a coated object W and the coated object is effected to apply a coating liquid P in a coating liquid reservoir of the application nozzle onto a surface of the coated object via a slit-shaped discharge port, the coating device includes: a shutter member rotatable in the coating liquid reservoir to open or close space between the coating liquid reservoir and the slit-shaped discharge port; and a gas feed regulation means for regulating the pressure on the coating liquid in the coating liquid reservoir, and is characterized in that in a state where the gas feed regulation means maintains the pressure on the coating liquid in the coating liquid reservoir to be at a given level, the shutter member is rotated to open or close space between the coating liquid reservoir and the slit-shaped discharge port.

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.

A device is described for protecting a sensor window. The device includes a two-piece nozzle system and is configured for generating a first and a second fluid flow, a first piece of the two-piece nozzle system being fixedly situated with respect to the sensor window, and a second piece of the two-piece nozzle system being configured for assuming different positions with respect to the first piece of the two-piece nozzle system, and the two-piece nozzle system being aligned with respect to the sensor window to direct a predominant portion of the first fluid flow in parallel to the sensor window and to direct a predominant portion of the second fluid flow in the direction onto the sensor window.

A nozzle for a viscous food dispensing system configured to dispense a viscous food product includes a nozzle passage extending from a nozzle inlet to a nozzle outlet, and a first port positioned proximate the nozzle outlet. A valve insert is positioned within the nozzle passage between the nozzle inlet and the first port, and the valve insert includes a second port. The first port and the second port are configured to move between an open position and a closed position in which flow from the nozzle inlet to the nozzle outlet is restricted by the second port then restricted by the first port.

An artificially-lighted waterfall fixture apparatus includes a fixture housing having a lower housing part and an upper housing part overlying and fitted with the lower housing part so as to define a water-distributing channel and a passageway extending forwardly from and in communication with the water-distributing channel to receive a flow of water therefrom and produce an artificial waterfall flowing from an outlet of the passageway. The apparatus also includes an elongated baffle disposed in the fixture housing along a top portion of the water-distributing channel to receive and convert the flow of water to a laminar flow through the passageway, and an artificial light-focusing module supported centrally in the fixture housing proximate the water-distributing channel and aligned with the passageway so as to generate a beam of light through the passageway that produces a predetermined configuration of light in the laminar flow of water.

A water spraying device comprises a water spraying body configured to be fixed to a provided pool above a water level therein. The water spraying body includes a first housing with a support seat disposed therein, and a second housing including a rotating shaft supported by the support seat so the second housing is rotatable relative to the first housing. The water spraying body also includes a spray head in the second housing and configured to discharge water into the provided pool. A base configured to be fixed to the provided pool above a water level in the pool is also provided. In some embodiments, the base includes a side wall with a baffle extending circumferentially therefrom. In such embodiments, the water spraying body includes a casing with a spray head located atop to discharge water into the pool. Also in such embodiments, an abutment portion extends circumferentially around a bottom of the casing and is adapted to abut against the baffle.

A spray nozzle is disclosed that includes a nozzle body having a first portion with a cylindrical configuration and a second portion including a dome-shaped end wall. The first and second portions of the nozzle body define an internal fluid passage having a downstream end defined by the dome-shaped end wall. A flow control element is arranged at an inlet end of the internal fluid passage. The flow control element includes a pre-orifice through which fluid can enter the internal fluid passage of the nozzle body. First and second discharge orifices are provided in the dome-shaped end wall with each of the first and second discharge orifices being arranged on a respective one of opposing sides of an apex of the dome-shaped end wall. The first and second discharge orifices are configured to produce a fan-shaped fluid discharge pattern with each discharge orifice having an elongated slit-like configuration.

Various embodiments include cleaning flat objects with pulsed jets, based on a principle of enhancing formation of droplets of a liquid cleaning-medium by increasing the boundary surface-area between spray jets emitted from nozzles of the cleaning unit and the surrounding atmosphere. In various embodiments, droplet-formation enhancement means are located inside and at or near outlets of nozzles and comprise, for example, a jet splitter, threaded grooves on an inner surface of the nozzle body, or a thin tube to supply gas into the flow of the liquid cleaning-medium to form gas bubbles in the medium. Other factors considered include a mass ratio between the droplets and the contaminant particles, a velocity of the droplets, organization and sequence of jets that impinges on various surfaces of the flat object, and flows that rinse separated particles and other contaminants. Other methods and apparatuses are disclosed.