According to the present application there is provided a sprayer comprising a housing having a fluid inlet configured for being statically coupled to a fluid source to receive fluid therefrom. The housing further comprises a fluid outlet configured for the discharging the fluid, the distance between the fluid inlet and the fluid outlet being fixed; The sprayer has a bridge mounted over the housing and comprising a dispersion element configured for dispersing fluid discharged from the fluid outlet of the housing; The bridge is configured for displacement over the housing at least between a closed position in which the dispersion element comes into contact with the fluid outlet to thereby seal it, and an open position in which the dispersion element is spaced from the fluid outlet by a gap, allowing dispersion of the fluid.

The invention relates to a nozzle for spraying liquid media, in particular plant protection agents and liquid fertilizers, having a housing, wherein the housing has at least one liquid inlet, an outlet chamber and at least one outlet opening in fluid connection with the outlet chamber, in which a valve of variable flow resistance is arranged between the liquid inlet and the outlet opening, wherein the flow resistance of the valve is dependent on the liquid pressure.

A spray head includes a spray head base body (2) and a nozzle plate (3). The spray head base body (2) includes at least one liquid channel (4) for providing a liquid flow towards the nozzle plate (3). A drip-stop element (10) is located between the spray head base body (2) and the nozzle plate (3). The drip-stop element (10) includes at least one opening (11) being fluidly coupled with liquid channel (4) for providing a fluid flow into a space (6) between the drip-stop element (10) and the nozzle plate (3). At least a top portion (12) of the drip-stop element (10) is movably mounted within a spray head chamber (5) in order to perform a stroke movement. The top portion (12) is preloaded such that the top portion (12) rests against the nozzle plate (3) without applying any external forces to the top portion (12) and the top portion (12) is lifted off the nozzle plate (3) responsive to a liquid flow being provided through the liquid channel (4) into the space (6) between the top portion (12) and the nozzle plate (3).

A spool and wobbler assembly for a sprinkler includes a spool section with facing spool flanges on opposite sides of a spool core, where at least one of the spool flanges includes a circumferential rolling ledge. A wobbler cage including a wobbler ring is supported on the spool section, and a water deflector plate is coupled with the wobbler cage. An underside of the wobbler ring is provided with a circumferential rolling surface that engages the circumferential rolling ledge of the at least one spool flange. The rolling surface and rolling ledge provide for smoother orbital motion of the deflector plate.

The invention relates to a spray nozzle comprising an elastomeric tube (1) comprising a proximal end (7) through which a fluid is intended to enter said tube (1), and a distal end (8). The spray nozzle also comprises a slit (9) formed in the elastomeric tube (1) between the proximal end (7) and the distal end (8), for spraying the fluid out from the elastomeric tube (1). The elastomeric tube (1) includes a reinforcing element (10, 11) for limiting deformation of the elastomeric tube (1). By providing a slit in a tube between the proximal and distal ends of the tube, the slit can be sized to provide a broad spread pattern to the spray. The reinforcing element prevents over-expansion or deformation of the elastomeric tube.

A sprinkler head nozzle assembly in accordance with an embodiment of the present invention includes a housing including an inlet for pressurize water and an outlet downstream of the inlet, a valve member, operable to extend and reduce an arcuate opening at the outlet of the housing, wherein the size of the arcuate opening indicates the arc of coverage of the sprinkler head nozzle assembly and a rotating distributor, mounted on a central shaft extending through the housing and the valve member, and operable to deflect a flow of water from the arcuate opening out of the nozzle assembly.

In order to develop devices and methods for impulse ejection of medium, a device for impulse ejection of medium is proposed, comprising a medium chamber for holding a medium, said chamber being defined by an ejection tube and a sleeve, adjoining the ejection tube at the opposite end from the ejection end thereof, and a propellant chamber) for holding a propellant, said propellant chamber surrounding at least partially the medium chamber in the region of the sleeve, wherein the sleeve is designed for movement between a pressure position and an ejection position and seals, in the pressure position, the medium chamber from the propellant chamber at an end plate and wherein the sleeve in the ejection position is spaced apart from the end plate such that there is fluid communication for passage of the propellant from the propellant chamber into the medium chamber.

A sprinkler includes a pop-up deflector plate that is engageable with a brake assembly in an extended position. A brake module is secured to a sprinkler body and includes a rotatable connector coupled with the brake assembly. The pop-up deflector plate is disposed adjacent the nozzle and engages the rotatable connector in the extended position.

A sprinkler head nozzle assembly in accordance with an embodiment of the present invention includes a housing including an inlet for pressurize water and an outlet downstream of the inlet, a valve member, operable to extend and reduce an arcuate opening at the outlet of the housing, wherein the size of the arcuate opening indicates the arc of coverage of the sprinkler head nozzle assembly and a rotating distributor, mounted on a central shaft extending through the housing and the valve member, and operable to deflect a flow of water from the arcuate opening out of the nozzle assembly.

A cleaning device, which includes a clean water tank, a water pump and a cleaning head. A water outlet of the clean water tank is connected with the water pump, and a water outlet of the water pump is connected with the cleaning head through an outlet pipe. The cleaning device further includes an outlet control switch and a one-way water hydraulic control valve. The outlet control switch is provided on the outlet pipe; a water inlet of the one-way water hydraulic control valve is connected with the outlet pipe, and a joint of the water inlet of the one-way water hydraulic control valve and the outlet pipe is disposed between the outlet control switch and the water pump; and a water outlet of the one-way water hydraulic control valve is communicated with a water inlet of the clean water tank.