EP0698417A2 - Sprinkler for dispensing a fluid - Google Patents

Abstract

The sprinkler has a vertical mounting with a water flow driven turbine (8) which rotates faster than a direct driven rotor using a gearing (9) to step up the rotational speed. A water flow divider (7) with shaped contour spreads the water flow while the fast rotating head provides an added sprinkling effect. The spreading effect is adjustable by a rotating sleeve control (5). This adjusts the range of the sprinkling. The rotating drive provides a fast rotation even with low water pressures. The gearing includes eccentric gears.

Description

The invention relates to a sprinkler with which a liquid, in particular water, can be applied in a throwing track in such a way that a relatively large, e.g. many square meters of field is irrigated by precipitation. The fluid is expediently discharged approximately horizontally or obliquely upwards from the fluid outlet to the outside and then reaches the ground under the discharge energy via a curved throw path.

The sprinkler can advantageously be designed as a circular sprinkler, which distributes the water around it in an arc by means of one or more rotating or fixed guide bodies, wherein the arc can have an arc or sector angle of 360 ° or less, for example at most 45 ° . The water is fanned out by the guide body arrangement when leaving the sprinkler, namely, for example, first divided or fanned out into individual water jets in groove-like guide channels and adjacent, in the arc direction. Then these beams can be fanned out or divided again by interference elements or the like. If the rotation or another movement of the guide body is transverse too fast to the water jet, it is scattered too much and the range or throw decreases accordingly. If the speed of movement depends on the pressure of the tap water supplied to the sprinkler, these disadvantages increase with the water pressure. It is conceivable to drive a driven rotor via a centrifugal clutch from a driving rotor in such a way that the driven rotor is not taken along in a start-up phase and as a result the two rotors initially carry out a relative movement with respect to one another in the start-up phase. The rotors can also be continuously positively connected to each other when or after reaching the limit speed via the centrifugal clutch, so that in the essentially constant discharge operation following the start-up phase this relative movement is no longer present and the disadvantages mentioned arise.

The invention is also based on the object of providing a sprinkler in which disadvantages of known designs or of the type described are avoided and which, in particular at least in part independently of the water pressure supplied, is highly efficient or precisely determinable a large irrigation density and a large irrigation width, if necessary to different large irrigation sectors guaranteed.

According to the invention, two bodies or surfaces influencing the flow of the fluid can have a relative movement to one another in approximately uniformly continuous discharge operation. There are constantly changing relative positions of the two bodies to one another. The water jet or jets are constantly fanned out or scattered differently when leaving the sprinkler. The speed of the relative movement can be approximately constant or free of sudden changes in constant discharge operation and / or in the start-up phase.

It is particularly expedient if both guide bodies continuously perform a rectified or continuous or other working movement relative to a base or base body of the sprinkler. The upstream guide body or water jet parts have a significantly lower and possibly zero movement speed than the immediately following guide body, which takes over the water jets directly from the upstream guide body. This downstream guide body has the last areas which can be acted upon by the water before it is released from the sprinkler into the throwing track. The movement of the downstream guide body can be at least 10 to 20 times or at least 30 or 40 times faster than that of the upstream guide body. The latter emits the respective water jet relatively strongly bundled, and the downstream guide body is subjected to a relatively high energy input or is driven by the water jets. The water jets can be guided on the upstream guide body in such a way that they exert a driving torque on them by recoil in the sense of its working movement, which further increases the efficiency. There may be more than two guide bodies arranged downstream of one another in the flow direction and moving continuously or intermittently with respect to the base body, e.g. of the two types mentioned. It is also advantageous to combine only two guide bodies in one discharge head which forms the fluid outlet (s).

A guide body expediently drives another guide body or at least determines its speed of movement, for example by virtue of the fact that the two guide bodies are drive-connected to one another. The driven guide body can also generate a drive torque. A transmission, in particular a compact, only two is advantageous for the drive connection Reduction areas having reduction gear is provided, which allows one guide body to move about fifty times slower than the other. The rolling areas can be located partially or completely within the downstream guide body, for example a turbine wheel, which forms the widest area of the discharge head and from whose water-impinged driving surfaces or turbine blades the water reaches the free throw path.

Independently of the design described, means can also be provided in order to reversibly increase or decrease the irrigation sector with regard to the throwing distance and / or the throwing width by means of an actuating movement, in particular without parts having to be removed or components added. Other properties of the fluid jet can thus also be changeable.

According to the invention, an actuating device is arranged between the fluid inlet and the fluid outlet of the sprinkler on the base body which receives the bearing for the respective control or guide body. With this, adjustments can be made by hand even during discharge operation by a user, without the user being exposed to the escaping water jets. The actuating device advantageously has a control surface with control openings which are directly adjacent to one another and of different sizes and a control surface which can be moved relative to them for gradual partial or complete closing of the respective control opening. In the direction of the control movement, the control openings can have approximately the same width at least at a boundary or have different transverse extents graduated transversely to the control movement. Instead of a conceivable multi-part closing surface with surface parts that can be moved relative to one another, a one-part closing surface is sufficient surface parts that can be moved together in order to open the respective control opening completely or over its full width, to close it completely or to close it only over part of its transverse extent. As a result, the sum of the open passage cross sections of the control openings can be approximately constant with at least two to all different settings, so that correspondingly constant pressure conditions or flow rates result.

The design according to the invention is suitable both for sprinklers to be set up axially fixed and for sprinklers, in which the discharge head or the base body is mounted on a carrier axially or in the height direction, e.g. under the effect of the pressure of the water supplied. The actuating means are also expediently provided on the movable unit, in particular immediately below the discharge head, in such a way that the water flows through the handle and leaves it on the top side essentially without contact, namely through the upstream guide body.

Fig. 1

einen erfindungsgemäßen Regner in teilweise axial geschnittener Ansicht,

Fig. 2

einen Leitkörper eines Regners in Ansicht auf die Unterseite,

Fig. 3

die Stellvorrichtung des Regners gemäß Fig. 1 im Axialschnitt,

Fig. 4

die Stellvorrichtung gemäß Fig. 3 in einer weiteren Stellung,

Fig. 5

einen weiteren Leitkörper im Axialschnitt,

Fig. 6

einen Querschnitt durch Leitflächen des Leitkörpers gemäß Fig. 5 und

Fig. 7

eine weitere Ausbildung eines Austragkopfes.

These and other features emerge from the claims and also from the description and the drawings, the individual features being realized individually or in groups in the form of sub-combinations in one embodiment of the invention and in other fields and being advantageous and protectable per se Can represent versions for which protection is claimed here. Embodiments of the invention are shown in the drawings and are explained in more detail below. The drawings show:

Fig. 1

a sprinkler according to the invention in a partially axial sectional view,

Fig. 2

a guide body of a sprinkler in a view of the underside,

Fig. 3

1 in axial section,

Fig. 4

3 in a further position,

Fig. 5

another guide body in axial section,

Fig. 6

a cross section through guide surfaces of the guide body according to FIG. 5 and

Fig. 7

a further training of a discharge head.

The sprinkler 1 according to the drawings has a sleeve-shaped or tubular cylindrical base body 2. This is movable telescopically in a shaft-shaped or similarly designed, but further support 3 with one end movable. At the other, upper end he carries a discharge head 4 for the discharge of the water. Immediately adjacent to the head 4 projecting beyond the tube section of the base body 2, an adjusting device 5 is provided axially adjacent to the tube section for changing discharge characteristics. This can be set with a sleeve-shaped handle 6 of approximately the same external cross-section as the pipe section of the base body 2 and forms a continuous continuation of the pipe section approximately to the underside of the head 4.

The head 4 has a first guide body 7 and a second guide body 8. These are roughly parallel to the axis or the same and arranged with their ends facing each other. They form contiguous longitudinal sections of water channels. The two guide bodies 7, 8 are connected to one another via a control or driver device, for example a gear 9. Like the guide bodies 7, 8, this lies approximately in the axis 10 of at least one of the units 2 to 8. This axis 10 is usually oriented approximately vertically in operation. The water is supplied via a fluid inlet 11 provided at the lower end of the unit 2 and / or 3, for example via a non-destructively connected hose. It flows through the units 5 to 8 one after the other and leaves the head 4 in the region of a fluid outlet 12 formed by the outer circumferences of both guide bodies 7, 8. The water is fed to the guide body 7 through a distribution or directional nozzle 13, which determines which stationary one Arc angle is supplied to the guide bodies 7, 8 water.

The guide body 7 has at its lower ends connected to the nozzle 13 guide surfaces 14 which, by appropriate shaping, deflect the water flowing upwards with an initially increasing and then constant slope at an acute angle away from the axis 10, so that it guides the guide body 7 below leaves about 45 ° diagonally upwards. The guide surfaces 14, which are evenly distributed around the axis 10, are laterally delimited by rib-like projections or blades 15 which, like the guide surfaces according to FIG. 2, are inclined in the same direction from the inflow to the outlet end by a slight helix pitch of a few angular degrees around the axis 10 that the water flowing under pressure on the guide body 7 causes a driving torque about the axis 10. The guide body 15 also has corresponding turbine blades 16, which, however, are approximately parallel to the axis 10 and protrude freely towards the inlet end of the guide body 7, and against which the blades are separated Guide body 7 escaping water flows under the effect of a drive torque which is rectified about the axis 10 to said drive torque of the guide body 7. A part of each water jet can emerge from the guide body 7 bypassing the guide body 8 or the blade 16, while the other part drives the guide body 8 sufficiently.

A support member, e.g. a bolt or mandrel 17 is provided, which is fixedly held with its shaft end in a sleeve-shaped console of the base body 2 lying within the handle 6, the console lying axially adjacent to the tube section of the base body 2 and with it in one piece via radial and / or axial ribs connected is. Adjacent and in connection to the upper end face of the bracket, the mandrel 17 is surrounded by a fixed bearing sleeve 18, at the end facing away from the bracket the head of the mandrel 17 is braced, so that the bearing sleeve 18 with respect to the base body 2 is free of radial and / or axial play is arranged or forms a continuation of the sleeve-shaped console. The guide bodies 7, 8 are rotatably supported with axially immediately adjacent, approximately identically dimensioned bearings 19, 21 independently of one another on the outer circumference of the bearing sleeve 18 or with a sleeve-shaped hub 22, 23, however, the outer circumference of the hub 23 of the guide body 8 is eccentric to axis 10 lies in axis 20 parallel thereto. The degree of eccentricity is significantly smaller than the radius of the hub 23 or the bearing surfaces 19, 21.

The guide body 7 has a closed jacket 24 which is at least partially approximately at an acute angle conically widened in the flow direction on the outer circumference, on the outer circumference of which the guide surfaces 14 or those formed in one piece with it Buckets 15 lie. The smallest outer width of the jacket 24 in the region of the nozzle 13 is approximately equal to the outer width of the bearing sleeve 18 or the bearing surfaces 19, 21, while the largest width provided at the other end is greater than the axial length of the jacket 24, which is one at this end cylindrical end portion engaging in a jacket 25 of the guide body 8. This jacket 25 is approximately cylindrical on the inside and / or outside and has a length which is substantially less than half its width. The free, lower end face of the jacket 25 forms a continuation of these guide surfaces, which is inclined according to the outlet ends of the guide surfaces 14 and over which the guide vanes 16 protrude freely axially, but do not protrude beyond the inner circumference, but are flush with it and along the outer circumference are guided to an end wall 26, from which the jacket 25 projects axially freely. The end wall 26 or a cover covering this forms the uppermost end face of the head 4, the head of the mandrel 17 resting against the end wall 26 in such a way that the guide bodies 7, 8 and rotary rotors of the gear 9 are axially secured together with respect to the base body 2 are. The blades 16 form stiffening ribs for the jacket 25 and are in turn reinforced by this, the number of the blades 15, 16 of the two guide bodies 7, 8 evenly distributed about the axis 10 being approximately the same.

The ends of the groove-shaped guide surfaces 14 form a corresponding number, for example at least eight or ten or at most fourteen or eighteen radially outwardly directed water outlets 27, which are covered axially on part of their axial extent in passing by the blades 16 and only one of them smallest axial gap 28, namely a small radial clearance are separated. From the outlet 27, the water flows between adjacent blades 16 or against the radially inner axial edges of which, the blades 16 can be tapered in an axial view radially inward at an acute angle in a wedge-shaped or cutting-like manner, so that the water jet is divided by the cutting edge and along the flanks of the blade 16 when it passes through the jet. If there is currently no blade 16 in the area of an emerging water jet, it will enter the throw path unhindered or undivided. In the other case, the water leaves the head 4 in the region of the outlets 29, which lie in a cylindrical envelope surface touching the radially outer sides of the blades 16, the diameter of which is only larger by approximately the width of the blades 16 than the corresponding envelope surface of the outlets 27. In the area of the outlets 29, the water completely detaches from the head 4.

The guide bodies 7, 8 delimit a gear chamber 30, which can be opened in a simple manner by axially pulling the two guide bodies 7, 8 apart if the mandrel 17 has been released beforehand in a non-destructive manner. The gear space 30 is limited on the circumference only by the jacket 25, on the upper end face by the end wall 26 and only on the lower, opposite end face by the guide body 7. In the gear chamber 30, three first, second and third gear members 31, 32, 33 are arranged nested one inside the other, which mesh with one another via toothed rings 34, 35, 36. The first, designed as an external rotor driving or braking gear member 31 is rotatably supported with a hub 37 about the axis 20 on the outer circumference of the hub 23 and is located with an annular disk-shaped end wall 38 connecting the hub 37 with a jacket 39 directly adjacent to the end wall 26. Am The inner circumference of the jacket 39, which projects freely against the guide body 7, has the associated toothed ring 34 lying in the axis 20, the axis 20 rotating in operation about the axis 10 because a crank mechanism is caused by the eccentric bearing 40 is formed, via which the gear member 31 is driven by the guide body 8 or another rotor.

The second gear member 32 of this gear stage designed in the manner of a planetary gear is fixedly connected as a stator to the base body 2 or the bearing sleeve 18 and can be formed in one piece therewith. This cup-shaped gear member 32 lies with its end wall between the bearings 19, 21, has a jacket directed against the end wall 38 and immediately adjacent to the end wall 38 a radially outwardly projecting ring collar with the associated ring gear 35 on the outer circumference. The ring gear 34 is therefore in the manner of a planetary rotor only in a very limited circumferential area in engagement with the ring gear 35 or the ring gear 36 lying in the axis 10, which engages in the ring gear 34 axially immediately adjacent to the ring gear 35 and as external teeth on the outer circumference of the Gear member 33 is provided.

This sleeve-shaped gear member 33 can be formed in one piece with the casing 24, lies at a radial distance within the casing 24 and projects axially beyond its end or further than the hub 22, which, like the hub 23, is axially supported against the end wall of the gear member 32. The mutually facing end faces of the jackets 24, 39 are immediately adjacent to one another and the outer circumference of the gear member 31 or jacket 39 extends approximately to the inner circumference of the jacket 25, so that there is a radially and axially very compact design. The number of teeth of the sprockets 34 to 36 can be different, for example around one tooth, wherein the external toothing 36 can have fewer teeth than the external toothing 35 or the internal toothing 34. The different center distance to the internal toothing that arises due to the different number of teeth of the external toothings 35 and 36 34 is compensated in a known manner by shifting the profile, so that both external toothings 35 and 36 receive the same center distance from the internal toothing 34.

The reduction ratio from the guide body 8 to the guide body 7 can thereby be of the order of 47: 1, so that the guide body 7 e.g. only executes a maximum of 20 revolutions per minute. The direction of rotation of the two guide bodies 7, 8 is the same as and the same direction as the drive torques mentioned. The guide body 7, 8 start due to the inventive design with a very low water flow, the speed of the guide body 7 is almost independent of the water pressure and the water flow rate. The guide body 7 is namely prevented by the braking action from an excessively high speed, the speed of the guide body 8 in continuous operation being proportional to and not faster than the flow rate of the water. The driving torque acting on the guide body 7 through the water would thus give the guide body 7 a much higher speed when the guide body 7 is not braked.

For the favorable division of the water into individual, approximately equal water jets distributed about the axis 10, the bottom surface 41 of the guide surface 14 can have the above-mentioned gradient up to the outlet 27 and at an acute angle, for example at an angle of at most 75 ° and at least 45 °, in particular about 60 °, be flanked so that the flanks 42 go approximately symmetrically in cross section to a central plane through the bottom surface 41. The flanks 42 of two adjacent guide surfaces 14 which face away from one another merge into one another at an apex or crest 43 of the associated blade 15, since this forms the flanks 42 and separates the groove-shaped guide surfaces 14 from one another. The flanks 42 can only be at an axial distance from the inlet end of the guide surfaces 14 begin, this distance being greater than the radius or diameter of the outer circumference of the jacket 24 in the region of this inlet end and this outer circumference being widened in an acute-angled or progressively conical manner in the manner described to form an initially closed sheath flow. The respective guide groove 14 is enlarged in cross-section to the open groove side at least over part of its height and in particular up to the open groove side, the groove or blade height at the inlet end being zero and increasing steadily to progressively in the direction of flow. The flanks 42 or the respective crest 43 then rise in height from a zero height or the lowest height relative to the outer circumference of the casing 24 or the bottom surface 41 in that the crest 43 is concave or rectilinear at a larger angle or with a greater curvature increases and is directed approximately radially to the axis 10 in the exit envelope surface. The axial extent or height of the blade 15 can then be smaller in the area of the outlet 27 than the circumferential distance of the combs 43 of adjacent blades 15 in this area. In a radial view or in cross section transverse to the direction of flow, the blades 15 are triangular at an acute angle, and their ridges 43 can be sharp-edged and / or rounded or flattened. The clear width of the guide surface 14 increases constantly in the direction of flow.

The adjusting device 5 or other means for regulating the water flow has eight openings or control openings 44 to 51 arranged in a row adjacent to one another about an axis 10, the exits and / or entries of which lie in a common plane and are spaced apart from one another which are considerably smaller than the associated extension of the respective control opening. The control openings or their inlet or outlet openings gradually decrease approximately uniformly along the row in cross-section from a largest opening 44 to a smallest opening 51 and are uniformly around the axis 10 distributed. Their boundaries lying on one long side of the row are aligned with one another, since they have the same radial distances from the axis 10, while the boundaries remote therefrom have a decreasing distance from the inner boundary and both boundaries are curved around the axis 10. The mutually adjacent or opposite side boundaries of the openings are continuously approximately rectilinear, diverge at the same acute angle to the stepped boundaries and have correspondingly stepped lengths, with adjacent side boundaries of adjacent openings being parallel to one another and at a small distance from one another.

In order to change the passage cross section of approximately each of the openings mentioned between the complete opening width and the complete opening closure, a continuous disk-shaped or plate-shaped control member 52 is provided, which correspondingly covers or releases the respective control opening at the inlet and / or outlet opening. The continuously flat control surface 53 is provided here only on the inlet sides of the control openings and slides in a substantially pressure-tight manner on mating surfaces which are located between the control openings and on both sides immediately adjacent to the long sides of the row of openings. In the configuration explained on the basis of the control openings, the control member 52 has stepped control sections 54 to 60, which decrease along a corresponding row from a largest control section 54 to a smallest control section 60, but in each case by one on the stepped, outer longitudinal or circumferential side approximately the same dimension compared to the circumferential side of the associated control opening. The smallest control opening 51 therefore does not need to be assigned a smallest control section.

Each control section is approximately larger by the width of the distance between adjacent control openings compared to the width of a control opening, on the inner circumference all control sections are together circularly or concavely delimited around the axis 10 and the radially outer limits of the control sections are concavely curved around the axis 10, as well as abruptly stepped approximately at right angles to the respectively adjacent control section. The control openings 44 through 51 pass through an end wall, the side of which sliding on the control surface 53, like this control surface, is at right angles to the axis 10 and which, firmly connected to a jacket 61, forms an actuator. The end wall 62 lies at a smaller distance from the upper end than from the lower end of the casing 61 which is formed in one piece with it and which forms a housing which completely surrounds the control surfaces, the control member 52 being located on the underside of the control wall 62. The outer circumference of the casing 61 forms the handle 6, which is freely located between the units 2, 3 and the unit 4 on the other hand during discharge operation, but has a smaller outer width compared to the latter.

The adjusting device 5 can be infinitely adjusted by turning the handle 6, but expediently a number of preferred positions, in particular one corresponding to the number of control openings 44 to 51, can be felt and determined by resilient latching and only by applying a correspondingly strong actuation of the handle 6 are to be overcome. In a preferred position according to FIG. 3, all control openings are opened at least in their radially outer area, with the exception of the smallest control opening 51, the radially inner area being closed by all the other control openings, and thus only the radially outer area being open as an open passage cross section 64; the smallest opening 51 can be completely exposed. The sum of the passage cross sections 64 corresponds then approximately the widest to be released or the entire passage cross section of the largest control opening 44, the width of each passage cross section 64 being constant in the circumferential direction up to one or both side boundaries of the associated control opening or approximately the same for all control openings. Thus, water flows out approximately uniformly through approximately the same passage cross sections 64 over an arc angle of 360 ° about axis 10.

4, this arc angle is only 135 °, because the five smallest control openings 47 to 51 are completely closed, the two largest control openings 44, 45 are only partially closed radially on the inside, and the third largest control opening 46 is fully open. Any control opening can thus be opened over its entire width or closed on any section that is radially on the inside. The passage cross section 65 of each released control opening 44 to 46 is thus larger than the corresponding passage cross section 64 according to FIG. 3, however the sum of all passage cross sections 65 according to FIG. 4 is again approximately equal to the sum of all passage cross sections 64 according to FIG. 3, which for each of the preferred or locked positions applies. With a decrease in the arc angle or the number or row expansion of the passage cross sections, the individual passage cross section 65 thus increases. The largest control opening 44 can extend to the inner circumference of the casing 61, while the radial extent of the smallest opening 51 can correspond approximately to the transverse or radial extent of a passage cross section 64.

In the direction of flow to the outlet sides adjoins a central directional opening 63 of the directional nozzle 13, which is common to all control openings 44 to 51 and which is continuously ring-shaped, axially directly on the outer circumference section of the end wall 62 adjoining the control openings and on the inner circumference of a fixed mandrel, for example the bracket for the axle unit 17, 18, which is integral with the base body 2. The outer circumference of the straightening nozzle 13 has a somewhat smaller radial distance from the axis 10 than the inner boundaries of the control openings, which are separately connected to the straightening opening 63 in a radially inward direction via corresponding transverse channels, for example chamfers. The water flowing through the flow cross sections 64, 65 is guided radially inward through the area of the associated control opening covered by the control member 52 and then deflected transversely or axially into the directional nozzle 13, from which the water only enters the inlet side of the pipe at the respectively set arc angle Guide body 7 or the guide surfaces 14 occurs. The outer circumference of the jacket 24 or the guide surfaces 14 corresponds approximately to the inner circumference or the enveloping surface of the radially inner boundary of the directional nozzle 13, which could also be formed by individual channels distributed over the circumference. The control member 52 is arranged with a hub axially and / or radially fixed on the outer circumference of the console and sealed against this by an annular seal 66, so that it can be dismantled like the units 7, 8, 9, 17, 18, 31, 32, 33, 61, 62 can be removed upwards without being destroyed.

The units 6 and 61, 62 are mounted with a bearing 67 parallel to the direction of movement opposite or rotatable at the upper end of the base body 2 through more than one full rotation, the outer circumference of the handle 6 having an approximately continuous continuation of the same outside width Forms the outer circumference of the base body 2 and this, with the console, which is considerably reduced in comparison, protrudes upward beyond the upper end of its exposed outer casing into the handle 6, into which the lower, projects into the tapered end of the guide body 7. Thus, the upper end of the shell 61 forms an outer shield of the water guide in the guide body 7 in the discharge operation, the axial distance from the combs 43 is substantially smaller than half, a third or a quarter of its inside width.

The slide bearing 67 includes a seal and a snap connection 68 of the actuating body 6 with respect to the upper end of the base body 2, which engages sleeve-shaped in the lower end of the casing 61, forms an annular snap member on the outer circumference and the body 6 against axial pulling off and essentially axially - and / or ensures radial clearance. For assembly, the body 6 only needs to be slipped axially onto the associated end of the base body 2 and pressed axially, so that the snap connection lying in the axis 10 first releases springily and then engages by itself in a positive manner, the control surface 53 of the preassembled control element 52 then coming on the end wall 62 rests resiliently biased and under the action of the seal 66.

2, 5 and 6 in particular, the flanks 42 can differ in cross-section from the flat shape or have flank sections 69, 70 which are angularly stepped transversely to the flow direction, and the bottom 41 can deviate from the concavely curved or semicircular shape, for example be flat following the flank sections 69 lying transversely or at right angles to it. These parallel flank sections 69 are substantially lower than the subsequent flank sections 70, which diverge uniformly up to the ridges 43 at an angle of approximately 60 °, can be at least five and at most fifteen times higher than the flank sections 69 and each form one projecting edge in the associated Pass flank section 69. The flank sections 69 form the side flanks of an approximately rectangular bottom groove 71 which is approximately constant up to the outlet 27 and which forms the narrowest area of the flow cross section of the entire groove height reaching up to the ridges 43 and in turn can have a groove width which is slightly smaller than its groove height. The respective of these dimensions is at least one millimeter and at most two to three millimeters. It has been shown that the efficiency of the turbines 7, 8 and the throwing distance of the water can be increased and improved by means of these designs, in particular by combining an area 71 which is narrowed in cross section and, in contrast, optionally graduated, expanded or expanded expanding section 70.

The sprinklers according to FIGS. 1 and 7 are designed as pop-up sprinklers, in which the base body 2 can be extended with the head 4 upwards into the working position according to FIG. 1 with limited stops and downwards into a pop-up position in the carrier 3 so that the Head 4 or the end wall 26 with its ring edge projecting radially beyond the fluid outlet 12 and the blades 16 forms a covering closure for the upper end of the carrier 3. This upper end is formed by a sleeve-shaped end closure 72, which is fixed in position on the upper end of the carrier 3 via a threaded connection located in the axis 10, with a transverse wall 74, an annular seal 73 sliding on the outer circumference of the base body 2 against the upper end of the carrier 3 spans and has a slightly enlarged outer circumference compared to the outer circumference of the carrier 3. Against the transverse wall 74, a return spring 75, which surrounds the base body 2 and lies within the carrier 3, is supported, which brings the units 2, 4, 5 together back down into the carrier 3 when the unit transfers them into the extended position and in The water pressure holding the extended position is reduced accordingly, the water supplied to the head 4 acting on a piston at the lower end of the base body 2 at the inlet end of the carrier 3 within a corresponding cylinder space. In the retracted state, the surfaces of the units 4, 5 and the handle 6 that are exposed to water are completely closed to the outside by the carrier 3 or the housing 72, the units 61, 67, 68 projecting into the base body 3 and the seal 73 on the outer circumference of the jacket 61 lies sealingly at a distance between the ends thereof.

7, the first gear member 31 is provided instead of a common one with two separate engagement or toothed rings for the second and third gear members 35, 36, as a result of which the transmission ratio can be increased or decreased as desired. The two ring gears 34a, 34b have different diameters or numbers of teeth due to mutual gradation, here the ring gear 34a, on which the ring gear 35 rotates eccentrically circumferentially, has a smaller diameter than the ring gear 34b for the correspondingly rolling ring gear 36 of the gear member 33.

If water is supplied to the sprinkler from the fluid inlet under pressure in the rest or initial position according to FIG. 7, this water lifts the units 2 and 4 to 6 into the position according to FIG. 1 and simultaneously flows inside the main body pipe 2 to the adjusting device 6 and through this against the guide body 14, 16, so that at the latest when the extended position is reached, both guide bodies 7, 8 are subjected to the rectified drive torque about the axis 10 by the flowing water and begin to rotate in the same direction at substantially different speeds. The water is at the set arc angle Immediately carried out with a large throw distance and fanned out with increasing throw distance from the sprinkler head 4, so that adjacent water jets overlap each other before reaching the bottom, but are not or only subjected to an insignificant curvature or fanning out by the rotation of the guide body 7 in plan view. Essentially all of the components mentioned can consist of plastic or can be formed as injection molded parts.

Claims (11)

Sprinkler for discharging a fluid, in particular for irrigating vegetation, characterized in that a base body (2), a fluid inlet (11), a fluid outlet (12) and / or at least one guide body (7, 8) lying between them, as in the flow direction closing first and second guide bodies (7, 8) are provided for the fluid. Sprinkler according to claim 1, characterized in that at least one guide body (7, 8) executes a work movement as a working runner in substantially constant discharge mode and / or two guide bodies (7, 8) perform an approximately constant or continuous relative movement to one another in discharge mode that In particular, a first guide body (7) has a fluid outlet (27) directed against fluid guide surfaces (16) of a second guide body (8) or a working movement that is much slower than that of a second guide body (8), and preferably a first guide body (7) one rectified to a second guide body (8) Has working movement or is arranged axially substantially stationary in the discharge operation. Sprinkler according to Claim 1 or 2, characterized in that a first guide body (7) is designed as a fluid divider, fluid-driven recoil rotor and / or fluid straightening body with at least one fluid outlet (27) directed away from it, in particular a first guide body (7) has fluid guide surfaces (14) which deflect continuously transversely over a longitudinal section and that preferably a first guide member (7) is mounted on the base member (2) as a slow-moving device about an axis (10) approximately parallel to the longitudinal section. Sprinkler according to one of the preceding claims, characterized in that a turbine drive is provided for at least one guide body (7, 8), that in particular at least one guide body (7, 8) is designed as a turbine rotor and that preferably a second guide body ( 8) controls a first guide body (7) via a motion control (9). Sprinkler according to one of the preceding claims, characterized in that a gear (9) for operating a working member (7) has first, second and third gear members (31 to 33) which are in driving engagement with one another, a first of which is in driving engagement with one in relation to the base body (2), which is essentially fixed and forms a second gear member (32), there is a first gear member (31) in particular as a driving and decelerating gear member and preferably a first gear member (31) is mounted in a rolling manner along the stator (32) and / or a third gear member (33). Sprinkler according to one of the preceding claims, characterized in that a first gear member (31) for operating a working rotor (7, 8) is mounted eccentrically to at least one further gear member (32, 33), that in particular a first gear member (31) with a Crank drive (40) is driven and that preferably a first gear member (31) as an outer rotor with an inner periphery is in engagement with an outer periphery of at least one further gear member (32, 33). Sprinkler according to one of the preceding claims, characterized in that a first gear member (31) of a gear (9) for operating a working rotor (7, 8) is rotatably mounted on an eccentric (23) of a second guide body (8), in particular that first gear member (31) in a cup shape essentially completely within a second guide body (8) and with an end wall (38) or a jacket wall (39) immediately adjacent to a top wall (26) or a jacket wall (25) of the second guide body (8 ) and that the engagement areas of the second and third gear members (32, 33) are preferably directly adjacent to one another. Sprinkler, in particular according to the preamble of claim 1, characterized in that the fluid discharge in a throwing bow around an axis (10) and an adjusting device (5) is provided for changing the size of the throwing bow, in particular the sector angle of the throwing bow can be changed in steps and / or continuously between approximately 45 ° and 360 ° and that preferably the entire fluid passage cross-section (64 or 65) of the adjusting device (5) arranged downstream of the fluid inlet (11) of the base body (2) in at least two different settings is approximately the same. Sprinkler according to one of the preceding claims, characterized in that an adjusting device (5) for changing the characteristics of the fluid discharge in a row of adjacent control openings (44 to 51) and a movable along the row in a control direction and a control plane (53) with respect to the control openings Control member (52) for changing the passage cross section (64, 65) and for closing the respective control opening (44 to 51) provided as a passage opening, in particular that the control openings (44 to 51) and / or control sections (54 to 60) of the Control member (52) transverse to the control direction and parallel to the control plane (53) have different extents and that the control openings (44 to 51) are preferably arranged around a control axis (10) and have approximately the same arc extensions or radial spacings adjacent to the control axis (10). Sprinkler according to one of the preceding claims, characterized in that an exposed handle (6) is provided for actuating an adjusting device (5) for the fluid discharge, in particular that the handle (6) lies outside the fluid throw path opposite the fluid outlet (12) is set back and that preferably the sleeve-shaped handle (6) lying in a central axis (10) of the sprinkler (1) has an annular partition (62) with control openings (44 to 51) and an annular passage (63) directly adjoining the flow direction, to which guide surfaces (14) of the first guide body (7) directly adjoin. Sprinkler, in particular according to the preamble of claim 1, characterized in that at least one guide surface (14) of a guide body (7) is formed by a flank (42) of a longitudinal recess and has flank sections (69, 70) which are offset in cross section transversely to the direction of flow that in particular a longitudinal recess has an approximately flat bottom surface (41) and that preferably a longitudinal recess in the bottom region forms a groove (71) with approximately parallel groove flanks (69) and flank sections (70) adjoining it at an acute angle.

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