摘要:
A liquid diffusing device with interchangeable nozzles includes a support frame having a passageway for the liquid to be diffused, with an inlet and an outlet, at least one nozzle having a liquid outlet section with a predetermined diameter and a corresponding outflow rate, which is removably and selectively attachable to the outlet in a predetermined operating position, and a system for supporting at least one additional nozzle having an outlet section of a diameter other than that of the first nozzle in the non-operating position. The support system comprises a nozzle-holding plate formed of one piece with the frame and having quick a connect/disconnect system for the additional nozzle in the non-operating position.
摘要:
A vacuum generating device, particularly for operating actuator members in fluid delivery systems, comprises a duct (3) for a main pressurized fluid which extends along a longitudinal axis (L). The longitudinal duct (3) has an inlet portion (4), an outlet portion (5) and a restrictedportion (6) interposed therebetween, which is adapted to generate a venturi-induced negative pressure. The device (1) further includes a first radial conduit (7) in fluid communication with the restrictedportion (6) and with the outside, and at least one second radial conduit (9), which is also in fluid communication with the restrictedportion (6) and with the outside
摘要:
A rotating impact sprinkler comprises means for connecting a pressurized water column to a rotating joint which supports a rotating assembly (7) which is formed by a tubular body (8) with a nozzle (12) for generating a jet, an oscillating arm (20) and deflection means mounted at the end of the arm so as to interact with the jet. The deflection means comprise at least one main deflector (40) which oscillates elastically in a direction which is transverse to the arm between a central equilibrium position, in which the surface affected by the jet is minimal, and at least one lateral abutment position, in which the surface affected by the jet is maximal. The variation in cross section in passing from the minimal surface to the maximal one is sudden, so as to instantly increase the withdrawal of energy from the jet and generate impulsive forces on the deflector.
摘要:
A rotating impact sprinkler comprises means for connecting a pressurized water column to a rotating joint which supports a rotating assembly (7) which is formed by a tubular body (8) with a nozzle (12) for generating a jet, an oscillating arm (20) and deflection means mounted at the end of the arm so as to interact with the jet. The deflection means comprise at least one main deflector (40) which oscillates elastically in a direction which is transverse to the arm between a central equilibrium position, in which the surface affected by the jet is minimal, and at least one lateral abutment position, in which the surface affected by the jet is maximal. The variation in cross section in passing from the minimal surface to the maximal one is sudden, so as to instantly increase the withdrawal of energy from the jet and generate impulsive forces on the deflector.
摘要:
The invention concerned relates to an articulated coupling particularly for adjusting the jet inclination of irrigators in general, comprising two curved or straight consecutive tubular members (1) in constant direct communication with each other, which, at their facing contacting mouths, comprise profiled ends arranged to enable them to be mutually adjusted angularly about a diametrical axis of articulation; seal means (11) disposed on the inside of said mouths and arranged to automatically adapt to said adjustment; an adjustment device for said two tubular members (1), the control member of which lies in the mutual swivel plane of these latter; and a guide and connecting clamp for the tubular members (1), the longitudinal axis of which coincides with the axis of articulation of the coupling.
摘要:
A device (1) for controlling the oscillation of a rotating jet sprinkler (2), having a barrel (5) which is rotatably mounted to a stationary base (3) to swing about a substantially vertical axis (T), such device (1) comprising an reversing mechanism (6) interacting with at least one limit stop member (7,8) adapted to be secured to the stationary base (3) to reverse the direction of rotation of the barrel (5), at least one movable abutment member (11) adapted to be secured to the base (3) in a predetermined angular position to selectively interact with the mechanism (6) and form corresponding oscillation angles (±, ±') with the limit stop member (7,8),drive means (33) operably associated with the movable abutment member (11) to promote movement thereof between an active position in which such member interacts with the mechanism (6) and an inactive position in which such abutment member (11) does not interact with the mechanism (6). The movable abutment member (11) is swiveling in a substantially vertical plane (À) and is at least partially made of a ferromagnetic material, the movement means (33) comprising at least one electromagnetic actuator (35) which is designed to generate an electromagnetic force (F) acting on the movable abutment member (11) and to promote unidirectional movement thereof from the active position to the inactive position.
摘要:
A pressure regulating device for a liquid includes a main hollow body having an inlet end and an outlet end for the liquid, which are connected via a longitudinal passage, a tubular valve member, which is slidingly accommodated in the passage and has a regulating end upstream from the flow of the liquid, a seat placed inside the passage, upstream from the valve member, and having a transverse surface formed in the passage to interact with the regulating end of the valve member and define therewith a part having an adjustable width for the liquid. The seat is eccentrically supported in the passage and is formed of one piece with the main body, and is supported proximate to the inlet end for the liquid by a pair of longitudinal support wings substantially parallel to the flow direction.
摘要:
A sprinkler device, especially for units for the spray distribution of dispersing water and other similar liquids, comprising an at least partly hollow central body defining a longitudinal axis, a connecting sleeve to a supply line removably secured to the central body, a convergent to plants includes a deflector member disposed downstream from a nozzle to accelerate the liquid located between the central body and the sleeve, a diverter unit located downstream from the nozzle to for diverting the flow a stream of fluid from the nozzle in a substantially transverse direction so as to spray disperse the fluid outwards, first snap means to connect the nozzle to the sleeve . The first snap connection means are arranged so as to hold the nozzle in an axially immobilised position with respect to the sleeve when the latter is fitted to and disconnected from the central body. The deflector member is substantially in the form of a plate having a shaped surface facing an outlet of the nozzle and disposed at a predetermined axial distance therefrom, to divert a substantially axial flow of the fluid issuing from the nozzle along a plurality of transverse directions.