A trigger sprayer is described which utilizes a ball valve to control the flow of a carrier fluid such as water. The ball valve is actuated by a trigger which is biases to the open position by a torsion spring. Provision is made for the trigger sprayer to draw a chemical solution from a supply container and meter it through one or more outlet devices for providing streams in the form of fan or mist sprays, or other shaped sprays.

A pressure washer spray gun includes a spray gun body configured to be fluidly coupled to a source of pressurized water, a chemical container coupled to the spray gun body, wherein the chemical container is configured to contain liquid chemical, a venturi including a converging section, a throat, and a diverging section, wherein the venturi is coupled to the body, and wherein the chemical container is fluidly coupled to the throat, an air inlet port formed in the diverging section and configured to fluidly couple the diverging section to a source of air, and multiple nozzles, wherein each nozzle has a different orifice diameter, and wherein only one nozzle at a time can be selected to provide a fluid output from the spray gun.

A nozzle device for spraying fluid includes a body, two or more rotational nozzles, and a control member. The body includes a supply inlet that receives supply of fluid and two or more spray holes that communicate with the supply inlet and are open on a fluid spraying side. The rotational nozzles are arranged in the body in correspondence with the two or more spray holes, the rotational nozzles being retained in the body in a rotatable manner. The control member controls rotation of the rotational nozzles. Each rotational nozzle has a nozzle hole, through which fluid flowing into the corresponding spray hole of the body is sprayed toward a spraying side of the nozzle device. Each rotational nozzle includes a tip portion on the spraying side in which an axis of the nozzle hole is tilted relative to a rotation axis of the rotational nozzle.

A spray apparatus having built-in air regulation and a swivel connection to an air supply and uses thereof are described herein.

A device and to a process which can be carried out using the device, for the production of fine particles from a liquid which solidifies upon cooling, in particular from liquid fat. The process has the advantage of producing fine particles of very small size, preferably with narrow size distribution. The device has the advantage that a solidifying liquid can be supplied at a temperature above its solidification temperature, without cooling gas leading to solidification of the liquid in the supply line, which cooling gas is used in the production of the particles.

A jet ejector arrangement, including a jet ejector with an internal nozzle having a base and a tip and, on a common longitudinal axis, an inlet for a motive fluid at the base and an outlet for the accelerated motive fluid at the tip; a hollow tube having a base and surrounding the internal nozzle, such that the base of the hollow tube surrounds the base of the nozzle, and extending downstream the tip such that the chemical components inside the hollow tube reside therein for 0.1 to 5 seconds, wherein the flow direction in the hollow tube is defined by the flow direction of the motive fluid, for mixing and reacting the motive fluid with an additional fluid feed in a reaction zone in the hollow tube, thereby providing a reacted fluid; and an opening in the wall of the hollow tube for entry of the additional fluid feed.

The present disclosure relates to a spraying device including a Venturi tube. Two ends of the Venturi tube is provided with a first opening and a second opening respectively, and a sidewall of the Venturi tube is provided with an air vent. The Venturi tube has a throat portion arranged between the first opening and the second opening, and a tube diameter of the throat portion is less than an opening diameter of the first opening and less than an opening diameter of the second opening. The first opening is used for communicating with a water supply, and the air vent is used for communicating with external atmosphere. The spraying device and a pool including the same can produce spraying effects meeting requirements.

A nozzle includes an intake portion into which a fluid is introduced and a connecting portion having one side connected to the intake portion and the other side having a spray hole, wherein the spray hole has an area changing, depending on the introduced fluid.