A nozzle assembly includes a mixing channel and an aerator. The mixing channel has upstream and downstream ends defining a flow direction through the mixing channel and includes a housing wall and a mixer. The housing wall defines a flow passage and includes an inlet portion and a tip orifice. The inlet portion disposed at the upstream end and configured to receive a first material and a second material. The tip orifice is disposed at the downstream end and is configured to emit a plural component material from the mixing channel. The mixer is disposed within the mixing channel and is configured to mix the first material and the second material into the plural component material. The aerator is configured to flow nucleation air to a location downstream of an upstream end of the mixer and into a flow of the plural component material.

A pneumatic atomizing nozzle (10) which in a preferred form can be supplied with gas by means of a fan (43). The pneumatic atomizing nozzle (10) has a nozzle body (11), which bounds a flow space (21). The pneumatic atomizing nozzle (10) also has a liquid channel (27) having an outlet opening (38). Within the flow space (21), a liquid film (41) is formed, which is transported within the flow space (21) to a nozzle outlet (17) by the gas flow. The outlet opening (38) of the liquid channel (27) defines an outlet direction (A) for the liquid into the flow space (21), which in the preferred embodiment is opposite the flow direction (S) of the liquid film (41). At least in some sections, the liquid channel (27) and the outlet opening (38) extend transversely through the nozzle body (11) in a curved, wound, or meandering manner.

A makeup machine includes a multi-nozzle spray head and a plurality of needle valves. The multi-nozzle spray head has a main body and a plurality of nozzles. Each of the nozzles includes an interior chamber and an ejection hole, and the interior chamber is communicated with the ejection hole. The needle valves are disposed in the main body and axially aligned with the ejection holes. The needle valves are configured to be axially movable away from the corresponding ejection holes to open the ejection holes and to be axially movable towards the corresponding ejection holes to close the ejection holes. Further, the needle valves are capable of synchronously or individually moving with respect to the main body.

An atomization generator and a special high-pressure atomization generation device for increasing oil and gas field recovery are provided. The special high-pressure atomization generation device for increasing oil and gas field recovery includes an agent pot assembly, a gear pump, a metering pump, an atomization generator and pipelines. The gear pump is connected with the agent pot assembly through an agent pot liquid inlet pipe. The metering pump is arranged between the agent pot assembly and the atomization generator which are connected through the low-pressure manifold pipeline and the high-pressure liquid inlet pipeline. The high-pressure liquid inlet pipeline is connected with the liquid inlet pipe. The liquid inlet pipes are connected with the metering pump. The gas inlet pipe is connected with the high-pressure gas source through the high-pressure gas inlet pipe. The gas inlet cap is provided with a gas inlet pipe.

A method for reinforcing a structure comprising the following steps: preparation of UHPFRC comprising a cement precursor mix, of water, a fluidizing agent and metal fibers, transporting the UHPFRC by pumping to a suitable spray nozzle, spraying the mix onto a surface of the structure by the addition of a compressed air stream in the spray nozzle.

A film forming apparatus includes a spray nozzle, a first chamber, a first gas supply port, a second chamber, a through hole, and a mist outlet. A solution transformed into droplets that is to be sprayed from the spray nozzle is housed in the first chamber and transformed into a mist in the first chamber by gas injected from the first gas supply port. The solution in mist form moves from the first chamber through the through hole to the second chamber and is misted onto a substrate from the mist outlet of the second chamber.

Systems and methods for spraying a liquid treatment solution include a syringe attachment device and a handheld device. The syringe attachment device can be configured to secure a syringe containing the liquid treatment solution. The handheld device can have a movable slide configured to dispense the treatment solution from the syringe. The spray deposition system can include a cover' positioned to provide an impervious barrier between at least a portion of the syringe attachment device and the handheld device. The cover can be attached to the syringe attachment device prior to coupling the devices together. In an example, the cover can have a generally tubular shape with a closed end and an open end. The handheld device can be inserted into the cover and the cover can enclose the handheld device in the assembled position. In an example, the cover can be sterile and at least a portion of the syringe attachment device can be sterile.

An aerosol canister for dispensing a product and propellant, and a product metering valve for use with the aerosol canister. The canister includes a high pressure chamber for containing a liquefied or compressed gas propellant, a low pressure chamber for containing a gas propellant, and a product reservoir for containing a gas propellant. A pressure regulating valve is interposed between the high pressure chamber and the low pressure chamber, the pressure regulating valve adapted to provide a fluid flow path from the high pressure chamber to the low pressure chamber when the pressure in the low pressure chamber drops below a predetermined pressure. The canister further includes a partition wall interposed between the low pressure chamber and the product reservoir.

An apparatus and method for treating a surface with a jet having a multiplicity of particles, comprising an outer nozzle and at least two inner nozzle units, which are enclosed by the outer nozzle and are designed to introduce in each case a stream of propellant gas mixed with a multiplicity of particles into the outer nozzle, the outer nozzle being designed to combine the streams of propellant gas of the inner nozzle units to form an overall stream of propellant gas.

A dispensing system includes an above-deck nozzle portion, a reservoir for holding fluid, a foam pump, a multi-lumen dispense passage, and a mixing portion. The above-deck nozzle portion has a dispenser outlet and is disposed above a counter. The foam pump is disposed below the counter and includes at least one liquid pump chamber in fluid communication with the reservoir, at least one air pump chamber, and a pump outlet. The multi-lumen dispense passage includes an inlet, an outlet, at least one liquid lumen, and at least two air lumens. The inlet is in fluid communication with the pump outlet, the outlet is in fluid communication with the dispenser outlet, and the at least one liquid lumen and the at least two air lumens are each in fluid communication with the inlet and the outlet of the multi-lumen dispense passage. The mixing portion is disposed between the multi-lumen dispense passage and the dispenser outlet.