Spray nozzle device for spraying a cast strand or similar metallurgical products with a misty air/water mixture for uniformly cooling the cast strand. The air/water mixture is produced in a mixing chamber which acts as a diffusor and includes an air inlet, a water inlet, and a nozzle outlet approximately in alignment with the air inlet. The air inlet is arranged in an air inlet nozzle, the tip of which protrudes into an upper region of the mixing chamber and preferably has air outlet holes oriented perpendicular to a longitudinal axis of the mixing chamber. Water enters near the tip through at least one water outlet hole oriented perpendicular to the longitudinal axis and placed such that the water jet exiting the water outlet hole flows past the air outlet holes. The air flow or air pressure and the water flow or water pressure do not influence each other.

A spraying apparatus includes: an inner lid; a flow guide plate; and an annular member, wherein a liquid is introduced into a gas -liquid mixing section between the inner lid, the flow guide plate, and the annular member from an inner lid plate of the inner lid, the inner lid plate being a flat plate located upstream of the spraying apparatus and proximate the gas-liquid mixing section, and a gas is introduced into the gas-liquid mixing section from an opposite position, the liquid is atomized in the gas-liquid mixing section by the liquid impinging with the gas and transforming into a gas-liquid mixed fluid, and advancing to a spouting portion as the gas-liquid mixed fluid is circulated in the gas-liquid mixing section along the internal surface of the annular member on the flow guide plate and facing the gas-liquid mixing section.

In an example, an electrostatic spray module includes a base unit formed of a sturdy, rigid, liquid impermeable, electrically insulative material and a cover formed of a sturdy, rigid, liquid impermeable, electrically insulative material and sized for covering the base unit. The base unit and the cover configured for mating engagement together so as to form a liquid impermeable, electrically insulative, protective enclosure when the module is in a closed state to keep the internal components clean and dry and prevents system form high voltage shorting and prevents leakage of current by inhibiting a high voltage from establishing a return path to ground. The spray module includes a quick access latch and gasket systemwith no tools required to open for maintenance. The module includes integral place holders for components including air supply manifold and variable voltage supply to provide a selectable high voltage level to accommodate various spraying application.

The invention relates to an atomizer nozzle (10) with a liquid channel (19) which communicates downstream with an annular mixing chamber (26). A liquid (F) is supplied to the liquid channel (19) via a liquid connection (12). The atomizer nozzle (10) additionally has a gas connection (13) which is connected to a gas line system (28). Pressurized gas (L) is conducted to an outer injection channel (29) and an inner injection channel (34) via the gas line system. Each of the two injection channels (29, 34) opens into the annular mixing chamber (26) at a respective injection point (30, 35). The outer injection point (30) is provided on a radially outer mixing chamber wall, and the inner injection point (35) is provided on a radially inner mixing chamber wall. The inflowing liquid can thus be finely atomized using little pressurized gas (L) in the annular mixing chamber (26) and dispensed downstream of the annular mixing chamber via at least one outlet opening (40) in the form of a spray jet (S).

A spray delivery system including a sprayable active agent composition housed within a container is provided that can be used in the treatment of various skin conditions. The composition includes a hydrofluoro-based propellant, a carrier fluid, and active agent particles, and has a viscosity ranging from about 500 centipoise to about 10,000 centipoise. The container includes a dip tube; a valve assembly that includes a valve body, a stem comprising a stem orifice, and a vapor tap; and an actuator. The dip tube is coupled to the actuator by the valve assembly, and the actuator is depressed to dispense the emulsion. By selectively controlling the components and viscosity of the composition and the dimensions of the container components, the active agent particles resist settling so a substantially homogeneous distribution of the particles is maintained. Thus, the composition can be evenly dispensed from the container as a fine mist without clogging.

The disclosure provides methods for preparing a plural component material where part A and part B supplies are delivered from unpressurized storage containers. In use, a continuous stream of high velocity air moves through the static mixing nozzle, and the material streams may be intermittently moved into the nozzle and aerated with an air supply to cause the A and B materials to be mixed with each other and moved with the air to form the plural component materials. The plural component materials are delivered from a static mixing nozzle at pressures of less than 300 psi. Spray guns configured for preparing the plural component materials are also disclosed. Polyurethane foams, polyurethane adhesives, and polyurea coatings prepared by the methods are further provided.

An annular airflow regulating apparatus includes a cup-shaped element and an adjustment element. The cup-shaped element has a bowl and a bottom, integrated to form a first chamber. The bottom has a tapered channel parallel to an axis and penetrating through the bottom. A ring-shaped groove is disposed between the tapered channel and the bottom. The ring-shaped groove has an annular plane perpendicular to the axis. The adjustment element, having a tapered portion and second holes, is movably disposed in the cup-shaped element. The tapered portion protrudes into the tapered channel A tapered annular gap is formed between the tapered portion and the tapered channel. When the adjustment element is moved with respect to the cup-shaped element, a width of the tapered annular gap is varied, and thereupon a flow rate and velocity of the process gas would be varied accordingly.

A jet adapter (1) for plastering machines is designed for (semi)automatic application of materials, such as plaster, heat insulation foam, penetrating agent, etc. onto walls Thanks to its design, this unique jet adapter (1) in combination with a smart plastering machine is capable of plastering 1 m of a standard wall in 3 minutes, including plaster trowelling. The application of material onto the wall is performed by especially designed material jets (2) comprising a jet channel (22) and at least two gas feeds (24) entering the jet channel (22) at the slope ranging from 20? to 60? with reference to the axis of the jet (2), which feed the jet (2) with pressurized gas, that in the jet (2) accelerates the supplied material and provides it with energy sufficient for leaving the jet (2).

The sprayer comprises a container (1) intended to hold liquid for forming the cleaning mass and pressurized air for spraying it, the container (1) being dismantlably attachable to a head (3) bearing a manual pump (4) to increase the pressure of the air, the head (3) also having a supporting handle (23) with a pushbutton (24) operating the outlet valve (18) for the cleaning mass to the delivery nozzle (22), the sprayer having a manually replaceable mixing device (7, 26) located between the outlet conduit (8) for the liquid from the sprayer container (1) and the outlet of damping mass (20) controlled by the manual valve (18), the mixing device (7, 26) having different passage cross-sections for the liquid and the air present in the container (1) in order to adjust the sprayer to provide cleaning masses with a drier or wetter foam consistency.

Disclosed is a piezoelectric two-phase flow ultrasonic atomization nozzle, comprising a piezoelectric vibrator (6), an amplitude transformer (8), a second end cap (12) and a first end cap (14). The piezoelectric vibrator (6) and the amplitude transformer (8) are connected via a connecting bolt (4). An air inlet connector (2) is installed at a tail portion of the connecting bolt (4). The second end cap (12) is fixed to the front end of the amplitude transformer (8). A Laval type valve core (9) is fixed in a stepped hole of the amplitude transformer (8) and a groove of the second end cap (12). A liquid inlet hole (10) is arranged in a wall face of the stepped hole of the amplitude transformer (8). A plurality of flow guide holes (11) is formed at the positions, close to an outlet, of the Laval type valve core (9) in the radial direction. The second end cap (12) is connected to the first end cap (14) in a threaded manner. A radial positioning ring (20) is arranged at a snapping groove of the back end of the first end cap (14). A step type taper valve (21) is installed on the radial positioning ring (20). The step type taper valve (21) and a vibration baffle (19) are connected via an adjusting bolt (16). A resonance chamber (17) is formed between the vibration baffle (19) and the top end of the first end cap (14). A plurality of hoses (15) is arranged in the resonance chamber (17). According to the piezoelectric two-phase flow ultrasonic atomization nozzle, a large number of superfine fog droplets can be generated in a low-energy-consumption operating condition, and the shortcoming that large atomization amount, small grain size, low energy consumption and directed spraying cannot be considered at the same time in the traditional technology is overcome.