A nozzle assembly including a primary tube and an outer housing, and configured to generate a counterflowing stream to break up another fluid into small droplets.

A spraying apparatus includes a spraying apparatus main body, a liquid introduction portion, a gas-liquid spout portion, a gas introduction portion, a liquid inlet, a first gas inlet passage, a second gas inlet passage, and a spout. The first gas inlet passage is provided at at least one place of the annular gas introduction portion so as to communicate with the gas flow passage and the gas-liquid mixer, and allows a gas flow flowing through the gas flow passage to enter the gas-liquid mixer. The second gas inlet passage has a gas inlet having a predetermined area ratio, is provided on a downstream side of the first gas inlet passage of the gas introduction portion, and communicates with the gas flow passage and the gas-liquid mixer.

A spray applicator assembly discharges distributable product from a cartridge using low air pressure. The cartridge is held captive between a piston advancing from the rear to expel contents and a nozzle snugly attached at the front to receive expelled contents and to convert the contents into droplets by subjecting the contents to an array of focused high velocity air streams. The nozzle has an open barrel design and is able to discharge a variety of liquid or viscous distributable product without readjustment, other than resetting a proportioning valve in the low pressure air feed line. An air chamber immediately in front of the cartridge nose provides constant backpressure, which dominates to cleanly stop flow of distributable product into the nozzle whenever the piston stops advancing. When the piston resumes advancement, the flow restarts cleanly. Clean stopping and starting saves distributable product from waste. Variations in the distributable product might include, without limitation, a broad variety of materials including coating materials and combustibles.

A fluidized bed granulator for granulation with urea or urea-containing liquids is described, wherein the granulation liquid is supplied via a supply manifold comprising a header and risers. The risers are at least in part provided inside channels for secondary gas.

Disclosed is a compact spraying module for spraying a liquid in the form of droplets for treating a target. The module includes a spraying unit including a nozzle containing at least one spraying member and a fan that is capable of generating a carrying air flow in the nozzle and of carrying the droplets originating from the member to the target. The module includes its own liquid supply system that and includes an electric pump, an electronic control and monitoring unit, a holder that keeps the pump near the spraying unit, an individual communication interface, and a power supply interface. Also disclosed is a system for spraying and controlling a plurality of such modules and to a method for controlling modules of such a system.

A two-phase flow nozzle, having limited dimensions of main parts relating to size of atomized particle and having correction means to assure the height of a gap of a gas exit, wherein said gap is formed between a lower surface of a gas nozzle and an upper surface of a liquid nozzle is provided. The nozzle is composed with the first liquid passage, the liquid nozzle with a liquid splaying exit, a concave located at an end of the liquid nozzle where said liquid exit is located lower than said end of liquid nozzle, a gas nozzle having a gap to supply compressed gas for atomizing from the outer periphery of said liquid nozzle to the liquid injected from said liquid exit, and having a gas exit, wherein said gap is formed by sticking the minute spherical extrusion composed integrally on said liquid nozzle with a lower surface of said gas nozzle. Further, the contact of said minute spherical extrusion with said upper surface of gas nozzle is automatically corrected by supporting a convex spherical supported surface, which is provided at an intermediate portion of said liquid nozzle, with a concave spherical supporting surface, which is provided at an upper inner peripheral edge of a liquid nozzle holder.

A bubble generating device is disclosed which includes: a bubble generator including a tubular body, a liquid introduction port, a gas introduction port, and a discharge port; and a gas supply unit including a gas supply port, a pressurized gas being supplied to the bubble generator through the gas supply port, wherein the flow passage of the bubble generator extends substantially along a same axis, a plurality of reduced diameter portions each having an inner diameter reduced are provided along a direction along which the liquid flows, and gas-liquid mixing portions are provided downstream of the respective reduced diameter portions in a contiguous manner, each of the gas-liquid mixing portions having an inner diameter larger than a minimum inner diameter of each of the plurality of reduced diameter portions, and the gas introduction port of the bubble generator is formed of a plurality of through holes.

A fluidized bed granulator for granulation with urea or urea-containing liquids is described, wherein the granulation liquid is supplied via a supply manifold comprising a header and risers. The risers are at least in part provided inside channels for secondary gas.

A particle diameter is decreased and a surface area per unit flow amount is increased by spraying a VOC-containing liquid from a spraying device spraying that is a two-fluid nozzle in a vacuum container, so that only water in the VOC-containing liquid can be greatly evaporated and exhausted, and a concentrated VOC-containing liquid having high concentration can be refined and processed.

Disclosed is a two-fluid fog generator including: a low-pressure fog generator (10) breaking down liquid into liquid micro particles and spraying the liquid micro particles through a primary nozzle hole (16) of a nozzle body (13); and a fog generation unit (20) positioned on top of the nozzle body (13) and comprising: a conical pneumatic chamber (22) filled with compressed air; and a secondary nozzle hole (26) spraying fog, wherein the secondary nozzle hole (26) is located directly above the primary nozzle hole (16) and arranged in a concentric manner with the primary nozzle hole (16), wherein the fog includes a mixture of a compressed air and the liquid micro particles.