A sprinkler apparatus, a flow rate control valve assembly, and a sprinkler irrigation system for providing an even distribution of water across an asymmetrically shaped water receiving area. The sprinkler apparatus comprises a pop-up sprinkler head with a base housing for confiningly receiving a pressurized water flow that actuates a nozzle housing slidingly and rotationally cooperating with the base housing to pop-up into an operating position for discharge of water through at least one pair of nozzle assemblies. The pair of nozzle assemblies comprise an upper nozzle assembly and a lower nozzle assembly near the top end of the nozzle housing. The upper nozzle assembly controllably projects the pressurized water flow for a precisely set distance, while the lower nozzle assembly comprises a vertical slit-shaped aperture through which water is discharged in a curtain effect. Together, the pair of nozzle assemblies achieve a substantially uniform elliptical linear spray pattern with a bias to outermost end. A flow rate control valve assembly is further described and comprises a flow control valve assembly that can be fluidly coupled to a pop-up sprinkler head to controllably supply the pressurized water flow, the flow control valve assembly comprising a water inlet fluidly coupled to a water supply and a water outlet fluidly coupled to the pop-up sprinkler head, the water outlet cooperatively engaging with a rotary disc valve having a tapered passage wherein sliding rotation of the rotary disc valve incrementally adjusts the valve between an opened position and a closed position to control the pressurized water flow through the water outlet.

The application relates to a device for applying a bead of material. The device comprises a flexible nozzle body which defines a flow-through volume through which a material can flow for the bead of material, which is at least partially delimited by a walling formed by the nozzle body, having a feed opening for feeding the material into the flow-through volume. The nozzle body defines a mouth region through which the material can exit from the volume. Furthermore, the device comprises an actuator system, which is arranged on the nozzle body and is set up to change a cross section of the mouth region while deforming the nozzle body. The walling forms a barrier between the flow-through volume and the actuator system. The application further relates to a method for using the device.

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, which are coupled to a respective thermoelement, is arranged at the first nozzle lip, wherein the thermoelements are controllable by the regulation in such a way that the slot adjustment can be realized by the action of a mechanical force from the respective adjusting element on the first nozzle lip as a result of an expansion or contraction of the thermoelements. An adjustment of the adjusting elements is carried out automatically based on measurement signals of at least one sensor, wherein the sensor is designed and/or arranged at the nozzle assembly in such a way that conclusions can be drawn about the thickness profile of the melt. The right-hand and left-hand edge region of the melt is monitored by means of the sensor and is controlled or regulated in such a way that the respective edge region is set by adjusting the adjusting elements depending on the material, in particular viscosity and/or viscoelasticity, and/or quality criteria and/or a conveying speed. The invention further relates to a control and/or regulation system.

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, which are coupled to a respective thermoelement, is arranged at the first nozzle lip, wherein the thermoelements are controllable by the regulation in such a way that the slot adjustment can be realized by the action of a mechanical force from the respective adjusting element on the first nozzle lip as a result of an expansion or contraction of the thermoelements. An adjustment of the adjusting elements is carried out automatically based on measurement signals of at least one sensor, wherein the sensor is designed and/or arranged at the nozzle assembly in such a way that conclusions can be drawn about the thickness profile of the melt. The right-hand and left-hand edge region of the melt is monitored by means of the sensor and is controlled or regulated in such a way that the respective edge region is set by adjusting the adjusting elements depending on the material, in particular viscosity and/or viscoelasticity, and/or quality criteria and/or a conveying speed. The invention further relates to a control and/or regulation system.

A dynamically-controllable spray nozzle, and associated control system and methods of use, has applicability in agricultural spraying and in other processes and devices in which spray nozzles are used. In an embodiment, a deformable nozzle may be compressed by one or more actuators to alter a nozzle’s exit orifice in a continuously variable manner.

A fire extinguisher discharge nozzle is provided and includes sidewalls and a biasing element. The sidewalls define an aperture through which a medium(s) is dischargeable and are adjustable between multiple first and multiple second positions associated with dilated and constricted conditions of the aperture, respectively. The biasing element is configured to bias the sidewalls toward assuming one of the multiple first or multiple second positions. The sidewalls are drivable toward assuming the other one of the multiple first or multiple second positions in opposition to bias applied by the biasing element in accordance with a characteristic of the medium(s).

A fire extinguisher discharge nozzle is provided and includes sidewalls and a biasing element. The sidewalls define an aperture through which a medium(s) is dischargeable and are adjustable between multiple first and multiple second positions associated with dilated and constricted conditions of the aperture, respectively. The biasing element is configured to bias the sidewalls toward assuming one of the multiple first or multiple second positions. The sidewalls are drivable toward assuming the other one of the multiple first or multiple second positions in opposition to bias applied by the biasing element in accordance with a characteristic of the medium(s).

A liquid dispenser having a liquid reservoir and a discharge head secured thereto, an outlet valve with a pressure chamber and an opposite valve chamber. The liquid reservoir and the valve chamber are each connected at least in phases to a surrounding atmosphere by a ventilation channel. The two channels provided for this purpose, the reservoir ventilation channel and the valve ventilation channel, are separate channels with separate inlets on an outer face of the discharge head.

A liquid dispenser having a liquid reservoir and a discharge head secured thereto, an outlet valve with a pressure chamber and an opposite valve chamber. The liquid reservoir and the valve chamber are each connected at least in phases to a surrounding atmosphere by a ventilation channel. The two channels provided for this purpose, the reservoir ventilation channel and the valve ventilation channel, are separate channels with separate inlets on an outer face of the discharge head.

A fire extinguisher discharge nozzle is provided and includes sidewalls and a biasing element. The sidewalls define an aperture through which a medium(s) is dischargeable and are adjustable between multiple first and multiple second positions associated with dilated and constricted conditions of the aperture, respectively. The biasing element is configured to bias the sidewalls toward assuming one of the multiple first or multiple second positions. The sidewalls are drivable toward assuming the other one of the multiple first or multiple second positions in opposition to bias applied by the biasing element in accordance with a characteristic of the medium(s).