Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
  • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
  • B05B3/04—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
  • B05B3/0409—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements
  • B05B3/0418—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine
  • B05B3/0422—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements
  • B05B3/045—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements with automatic means for regulating the jet
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
  • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages

Definitions

• the invention relates to a sprinkler with a rotatable and rotational angle-dependent adjustable nozzle arrangement.
• Sprinklers having a nozzle arrangement rotatable about a substantially vertical axis in the regular operating position are known in particular as circular or sector sprinklers. Developments of such sprinklers also provide for irrigation of irregularly bounded surfaces to change the throw of the spray pattern emitted by the nozzle assembly in dependence on the angle of rotation about the axis of rotation. The angle-dependent change in the throw distance can be done by means of electrically actuatable adjusting devices or mechanical.
• a running surface surrounding the rotation axis is typically provided for an adjusting element rotated with the nozzle arrangement, which can be brought into a non-planar shape by means of a plurality of adjusting means arranged at a distance in the circumferential direction, so that the control element following the control cam extends the nozzle arrangement in FIG Sense of a change in the throw impacted.
• the throwing distance of the nozzle arrangement can be effected, for example, by reducing the flow rate via a throttle valve arranged upstream of the nozzle arrangement, by adjusting the nozzle exit direction or by swiveling in a deflector surface into the jet ejected from the nozzle arrangement.
• the actuator can be applied directly to the adjusting means during the rotation of the nozzle assembly, for which in US 3,952,954 of a ring radially outwardly projecting figure can be bent up and down and the actuator moves away with a guide profile, the sequence of fingers.
• a contour plate is subdivided into narrow circle segments which are connected to an inner ring and can be bent over upwards or downwards and form a non-planar, stepped contour surface on which a sprung adjusting element slides.
• the adjusting means are formed by screws, at the height-adjustable ends of which a spring-loaded lever rests.
• the present invention has for its object to improve the handling of a sprinkler with such an adjustable cam.
• the execution of the adjusting means as a pivotally mounted lever with horizontal and with respect to the axis of rotation of the sprinkler head of this spaced and tangentially aligned pivot axes results in a particularly simple and intuitive handling.
• the outward facing grip sections of the levers provide a large lever arm for expended by the user for adjustment force, advantageously the control cam and its coupling to the adjusting lever are closer to the pivot axes than the handle portions.
• holding structures which hold the levers in the set positions within the pivotability about the pivot axis and in particular the control curve, which typically bears the control element under spring load, are supported against the housing, with respect to the control cam larger, compared to the handle portions but smaller distance arranged by the pivot axes, so that at slight manual overcoming a holding force of a control lever at the same time a high level of security against unintentional adjustment during operation is given.
• the pivotability of the adjusting lever about horizontal, tangential to the axis of rotation aligned pivot axes also allows a simple construction of the actuating mechanism and a circumferentially dense Pa- cc tion of levers, advantageously adjacent control levers offset by a maximum of 45 °, preferably at most 30 ° about the axis of rotation against each other angularly are.
• a larger number of levers allows a more accurate adaptation of the wetted surface to a given surface.
• the levers are advantageously not integral with the control curve and connected only via coupling structures with the control cam, wherein preferably a relative radial displacement of the control cam and levers is given in the coupling structures.
• the tread of the cam can advantageously in an intermediate position in which the levers each occupy an intermediate position between an upper and a lower extreme position of the pivoting lie in a plane perpendicular to the axis of rotation and distributed to the axis of rotation about the angular positions of the actuating lever from this intermediate position adjustable up and down be.
• the intermediate position with a flat tread has a particularly small radial change of the cam in the predominantly vertical adjustment result.
• Fig. 3 is an intermediate position with a flat tread
• FIG. 5 a lever
• FIG. 6 a joint region of the control cam
• Fig. 7 a joint area with angled course of
• Control cam, Fig. 8 is a support position of the control cam
• Fig. 9 shows a housing with levers.
• Fig. 1 shows a view obliquely from above an embodiment of a circular or sector sprinkler with variably controllable throw, the sprinkler is shown partially cut in the middle in vertical sectional planes.
• a sprinkler housing GE forms a base and a carrier for a sprinkler head RK, which is rotatable relative to the housing GE about a rotation axis DA and accommodates a nozzle assembly DU.
• the nozzle arrangement DU emits water as a jet pattern SB, which can be changed by the position of the adjustable nozzle arrangement DU, in particular with regard to the irrigation width, which is also referred to as the throwing distance.
• the control lever TH is mounted pivotably about a lever axis HA in the sprinkler head RK and is pivoted during operation of the sprinkler with the sprinkler head RK about the axis of rotation DA.
• the nozzle arrangement DU is pivotable around a nozzle axis VA in the example outlined.
• the axis of rotation DA is aligned at least approximately vertically in a regular operating position of the sprinkler.
• the lever axis HA of the control lever TH preferably runs horizontally as sketched.
• a control cam SK Connected to the housing GE and fixed in the operation of the sprinkler with respect to the housing GE is a control cam SK, which annularly surrounds the axis of rotation DA therefrom and which consists of a plurality of circumferentially adjoining and connected to a ring segments SE.
• the upwardly facing running surface LF of the control cam acts as a contact surface for a lever axis HA facing away from the end of the protruding from the sprinkler housing RK lever arm of the control lever TH.
• a return spring is preferably arranged in the nozzle arrangement DU and preferably acts directly on the around the nozzle axis VA pivotable nozzle arrangement DU and indirectly via the lever mechanism on the control lever TH.
• the entire lever mechanism between the pivotable nozzle arrangement DU and the end of the control lever resting on the running surface LF is advantageously always biased in the same direction in one direction, resulting in particularly good reproducibility of the frosted surface.
• a guide element of the control lever such as from the aforementioned US 3,952,954 known or sliding a guide element in a groove-shaped cam, can be dispensed with a return spring.
• the annular control cam is supported on a plurality of Abstützept, which are offset from each other about the axis of rotation DA angularly, via lever SH against the housing GE and at the support positions by means of the adjusting lever in height variable.
• the height of the running surface LF of the control cam over the housing GE which varies in the direction of circulation, is converted by the nozzle axis DU about the nozzle axis VA during operation of the sprinkler with the sprinkler head RK sliding or rolling on the running surface LF, which in turn leads to a change in the output from the nozzle assembly DU jet pattern SB.
• the influencing of the jet pattern SB takes place in the example of an example sketched in particular by a changed orientation of the jet exit direction from the nozzle DU.
• a change in the jet pattern SB and in particular its irrigation mode can also be carried out in other ways known per se from the prior art, such as, for example, the swiveling of a deflector surface into the course of a jet emitted by a nozzle arrangement.
• throttling of the flow through a throttle valve controllable via the control lever SH can be provided.
• the adjusting levers SH are pivotally mounted on an inner ring IR of the housing about lever joints HG, the pivot axes of the lever joints HG being radially spaced from the axis of rotation DA in the preferred embodiment outlined and tangential with respect to the axis of rotation in a horizontal plane perpendicular to the axis of rotation DA DA are lost.
• the adjusting lever SH have a lever portion HG facing away and with respect to the axis of rotation DA radially beyond a housing wall of the housing GE also protruding handle portion GR, via which a manual pivoting of the lever SH to the lever joints HG is possible.
• the segments SE of the control cam are articulated to each other at joint sections GA, wherein segments adjacent to a joint section GA can be bent relative to one another relative to each other about radial axes substantially relative to the axis of rotation DA, so that in the course of the control curve in horizontal direction, may result in rising or falling portions of the tread LF on individual segments.
• the cam or one formed by the totality of all segments SE and joint sections GA cam body which is hereinafter, unless otherwise stated, in part also equated with the cam, is executed in a preferred embodiment as a one-piece plastic injection molded body.
• Fig. 3 shows the control cam SK-E in an intermediate position in which all the lever SH occupy an intermediate position within its allowable pivoting range about the lever joints HG, in which the tread LF of Control cam is in a plane perpendicular to the axis of rotation DA plane.
• the adjusting levers SH are manually pivotable upwards and downwards from the intermediate positions assumed in FIG. 3, as a result of which the control cam is brought from the flat course of the running surface LF in the intermediate position according to FIG. 3 into a non-level operating position which typically corresponds to a real application can.
• such an operating position is shown with non-planar tread LF a SK-U designated non-planar cam position.
• the individual control levers SH can be adjusted independently of one another from the intermediate positions assumed in FIG. 3 upwards and downwards, wherein in particular in the circumferential direction immediately following adjusting levers can be displaced in the opposite direction from the intermediate positions shown in FIG.
• the individual segments SE of the control cam are dimensionally stable and can be bent relative to one another at the joint areas GA approximately radially relative to the rotational axis DA extending buckling axes. Between adjacent joint areas GA, the running surface of the affected segment runs flat, wherein the tread plane is tilted against the common plane of Fig. 3 depending on the position of the lever at the two located at the ends of a segment joint areas GA. A tilt can be connected to a radial displacement with respect to the slight radial displacement DA.
• the dimensional stability of the segments in the course between two adjacent joint areas GA and the articulated connection of two segments in a joint area GA can advantageously be realized by different heights of the control cam body in the joint areas GA on the one hand and in the segments lying between adjacent joint areas on the other hand.
• the dimensional stability of the segments ments in particular the dimensional stability against vertical deflection under load by the end of the control lever TH, to be achieved in that on the lower sides of the segments of the tread LF facing stiffening ribs or webs or the like are formed, which with low use of plastic material high rigidity effect against vertical deflection.
• the stiffening webs may extend at the ends of the segments facing the articulation areas with decreasing height to allow angling of the segments at maximum kink angle between two adjacent segments, without the stiffening ribs Rl abutting the adjusting lever which supports the control cam at the joint area GA , Fig. 2 shows such a design of a control curve with stiffened by stiffening ribs Rl against vertical deflection segments SE.
• control cam is supported vertically at the joint areas GA on the lever SH against the housing GE, wherein in the preferred example shown sketched the control cam with the hinge portions GA rests on tops of the lever.
• control cam is coupled to the joint areas GE in such a way with the adjusting levers that, when the adjusting lever is pivoted downwards, the control cam is forcibly pulled downwards.
• control cam and lever are coupled via snap connections, via which a forced displacement of a joint area GA is ensured when moving the associated control lever down.
• FIG. 5 shows an advantageous embodiment of an actuating lever.
• Fig. 5 (A) shows the lever in its complete form and
• Fig. 5 (B) shows a cut-open lever.
• the lever is for this purpose shown in Fig. 5 without the control cam and pivoted in a non-operating position via a common for all levers inner ring IR far up to make the shape of the control lever in both representations vivid.
• the adjusting lever forms a hollow body which surrounds a cavity GH.
• the cavity GH advantageously allows the favorable production of the adjusting lever in the illustrated form in the plastic injection molding process by a core projecting into the cavity GH in the injection molding tool.
• the snap hook RH on the underside of the control cam has, corresponding to the opening LL in the adjusting lever, a narrow central part and projections protruding laterally from it in the circumferential direction of the control cam.
• this form of a control element on the cam side as part of coupling structures between control cam and levers is particularly beneficial to the articulation of the joint areas GA connected by slot-shaped openings HS are formed by the cam at the joint areas GA in the circumferential direction on both sides of the central portion of the snap hook RH.
• slot-shaped openings HS on both sides of the narrow central part of the snap hook RH allow on the one hand the advantageous injection-technical production of the shape of the snap hook by immersing cores of an injection mold vertically through the tread of the control cam to reach the projections of the snap hook.
• the slots HS deliberately weaken the flexural rigidity of the control cam at these two points and thus form particularly flexible, bending axes lying on both sides of a middle section of the joint region stiff by the central web of the snap hook RH as partial joints of the joint region for the mutual bending of two directly adjacent segments.
• Fig. 6 shows the area of a support is shown from radially inside the control cam, wherein the adjusting lever is shown cut away to illustrate the position of the snap hook RH in the cavity GH of the actuating lever.
• Fig. 7 shows two adjacent segments, which extend at the support position of a control lever SH in the joint area GA strongly against each other angled.
• Fig. 1 are the leftmost the closed shape of a control lever and rightmost a cut open lever, in which the snap hook RH is cut through the middle, shown.
• Fig. 2 also from the bottom of the control cam in the joint area GA downwardly projecting snap hook and the slot-shaped openings HS in the control cam over the projection of the snap hook is shown.
• the coupling structures between control cam and adjusting levers with in the example openings LL and snap hook RH are advantageously designed so that they allow a slight radial displacement of the control cam relative to the levers to keep voltages at the aforementioned radial displacement when tilting segments low.
• the slots LL in the radial direction a sufficiently larger extent than the middle parts of the snap hooks RH.
• the levers are in their installed position of the sprinkler in recesses HO of an inner ring IR forming housing surface and close by the side walls of the lever designed as a hollow body advantageously these openings HO largely.
• a determination of the lever in their respective selected pivot position about the lever joints HG is carried out in an advantageous embodiment via a latch, wherein in the preferred embodiment sketched above a circular arc segment about the lever joint HG extending ring segment surface is formed a latching structure RS, which cooperates with a spring element RF and in a plurality of finely graduated pivotal positions of the actuating lever positively locking the actuating lever with a determined by the spring RF holding force acts.
• the holding force can be overcome by a force acting on a handle portion GR of the actuating lever user force and the lever in this way easily pivoted into a desired position.
• a determination of a control lever in a user-selected pivotal position about the lever joint HG can also be done in other ways, in particular purely non-positively or by the user selectively releasable locking elements.
• the sketched embodiment with the latching structure RS and acting together with this spring RF, which is elastically pressed against the latching structure, is characterized by particular simplicity in the production and handling at the same time reliable support of the control cam.
• the gripping portion GR is advantageously arranged at a position of the adjusting lever which is maximally remote from the lever joint HG, so that a user force acting on the gripping portion GR acts with a maximum lever arm and overcomes the holding force of the latching attachment particularly easily.
• the control cam SK is advantageously closer to the lever joint HG than the grip portion GR and preferably also closer to the lever joint HG as a latching or purely non-positively clamping attachment, so that the holding force of fixing the control lever in a certain pivot position relative to the housing a larger Lever arm to the lever joint has up as the control cam SK.
• the adjusting levers can be made separately from the housing, in particular also separated from the inner ring IR of the housing and used in prepared joint receptacles for the formation of the lever joints.
• the adjusting lever are permanently made in one piece with the housing or at least the inner ring IR and are pivotable relative to the housing or the inner ring formed on the lever joints film hinges.
• the preparation can be carried out in particular in a two-step injection molding process, whereby advantageously the adjusting lever can be produced from a different material and / or in a different color.
• Fig. 9 shows a manufactured in such a way housing GE with molded levers SH, which can dive for the shape of the lever SH provided in the injection molding mold elements through openings HO of the housing GE through.

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Citations (8)

• 2010
  • 2010-12-21 WO PCT/EP2010/070334 patent/WO2012084013A1/de active Application Filing
  • 2010-12-21 PL PL10798795T patent/PL2654402T3/pl unknown
  • 2010-12-21 EP EP10798795.0A patent/EP2654402B1/de active Active

Patent Citations (8)

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