EP0362558B1 - Sprinkler - Google Patents

Abstract

In a sprinkler (1), the water distributors (10) for supplying the spray nozzles (13, 14, 15) is formed by a separate main channel (15) inserted in a spray nozzle casing (2) and having relatively small flow cross-sections compared with the casing cross-sections, which is also constructed in one piece with the spray nozzles (13, 14, 15), so that the spray nozzle casing (2) does not have to be used for water distribution purposes and can instead merely serve as a support casing. Of the spray nozzles arranged in a row, those which are located at the end of the row can be individually manually disconnected with separate check valves (36), so that in simple manner it is possible to adjust the width of the exiting water curtain within certain limits.

Description

The invention relates to a sprinkling device according to the preamble of claim 1 or 6. It can be used, for example, as a portable or stationary device for sprinkling on lawns, beds or the like.

In a sprinkler device known from US-A-2 673 122, the water-carrying main channel forms the supporting body for the spray nozzle housing, only this main channel being held in a carrier and in turn bearing the entire weight of the spray nozzle housing by means of support and screw connections.

The invention has for its object to avoid disadvantages of known designs, in particular to create a sprinkling device of the type mentioned, which makes it possible in a simple manner to limit the water flow within relatively narrow limits to precisely defined areas with a compact design.

This object is achieved in a sprinkling device by the features of claim 1. A separate main channel is assigned to the spray nozzle housing for the water flow between a line connection and the spray nozzles, the clear cross sections of which are essential or in many cases can be smaller than those of the housing and against which the rest of the spray nozzle housing is preferably sealed or sealable, so that the housing above all the function of a support profile or support housing z. B. for the main channel that forms spray nozzles and the like. The weight of the irrigation device can also be kept very low during operation because of the small volume of its water supply, and in addition, when the irrigation device is started up, i.e. at the start of the water supply, the pressure at the spray nozzles builds up very quickly or practically immediately, because not before the entire housing must be filled with water and vented through the spray nozzles.

Another advantage is that the relatively narrow main channel is much easier to seal against unwanted water leakage than a relatively large-volume housing, especially since the flow cross-section of the main channel is at least at its narrowest points in the order of magnitude of that of the connection for the water pipe or even smaller can.

The irrigation device according to the invention has spray nozzles which, for. B. are provided in at least one row in a row on a nozzle holder. The nozzle carrier, which could be formed by a curved pipe section or the like, is preferably designed as a housing with different internal and / or external cross-sections and has a water supply for supplying the water to the spray nozzles, so that targeted irrigation is ensured.

The spray nozzle housing can form at least over a part of its length substantially over its entire inner cross-section the associated section of the water guide in such a way that the housing is practically completely filled with water under pressure and that this water comes directly from the Housing enters the spray nozzles, which are formed by nozzle openings in a housing wall of the spray nozzle housing. The irrigation device has proven itself well in operation, especially since the spray nozzle housing is also suitable for accommodating a swivel drive, with which the water curtain emerging from the spray nozzles can be pivoted back and forth to sprinkle a correspondingly large base area.

The main channel could protrude beyond the housing in the longitudinal direction of the housing with at least one end, be at least partially outside the housing transversely to this longitudinal direction or be provided entirely on the outside of the housing and also be formed at least partially in one piece with the housing, but this results in a particular one advantageous embodiment if the main channel is formed on the one hand by a separate, self-contained assembly group and on the other hand is essentially completely within the spray nozzle housing. If the main channel has the spray nozzles z. B. in the sense that they belong to the assembly mentioned, the waterproof seal is further simplified.

Due to the training described, the swivel drive, the z. B. has a hydraulic motor connected to the water supply with gearbox, as a separate unit in so far completely out of the water supply, as a motor or drive housing is only flowed through by the water in a defined way, but is not washed around on the outside by the water so that z. B. the transmission located within this separate drive housing does not run in the water, but in a sealed transmission chamber. A water outlet connection on the drive housing is expediently connected to the main duct in a sealed manner via a connecting piece within the spray nozzle housing. The described, low operating weight of the pivotable part of the sprinkling device can also further improve the smooth operation of the pivot drive.

In the case of a sprinkling device of the type described in the introduction, the invention is also based on the object of being able to influence the guidance of the water when leaving the spray nozzle housing in such a way that certain characteristics of the escaping water curtain, e.g. whose width, density or the like can be changed.

This object is achieved according to the invention as defined in claim 6 in that one or more spray nozzles have means by which they can be switched off individually or in groups at least partially, but preferably completely with regard to the water outlet, so that less of them are used during operation or no more water comes out. If the adjustable nozzles are provided at the front or rear end of the at least one row of spray nozzles, the width of the escaping water curtain can be effectively reduced by placing one or more of these end nozzles to adapt to the size of the base area to be irrigated, especially if these End nozzles are inclined in a fan shape obliquely outwards so that the width of the water curtain can be selected to be substantially greater than the length of the row of nozzles.

Instead of simple nozzle plugs or the like. For closing the spray nozzles to be turned off, there is a particularly easy-to-use design if each spray nozzle can be closed with a separate valve which is essentially inside the spray nozzle housing and which is simple Slider valve can be actuated by a linear, approximately parallel to the emerging water supply and / or transverse or perpendicular to the housing axis movement.

If the main channel described is provided for the water supply, the shut-off devices for the spray nozzles can belong to the assembly of this main channel or their fixed parts can be formed in one piece with the main channel.

To shut off the respective spray nozzle, a separate handle is expediently provided, the handles for adjacent spray nozzles in the longitudinal direction of the row of nozzles one behind the other and from the outside of the housing can be directly accessible, so that they practically form an indication of the setting state of the sprinkling device, because based on their position, the closed or open state of the associated spray nozzle can already be recognized from a distance.

Fig. 1

eine erfindungsgemäße Beregnungsvorrichtung in teilweise geschnittener Ansicht,

Fig. 2

den Kanalkasten der Beregnungsvorrichtung gemäß Fig. 1 in geöffneter Seitenansicht,

Fig. 3

den Kanalkasten gemäß Fig. 2 in Draufsicht,

Fig. 4

einen Schnitt annähernd nach der Linie IV - IV in Fig. 1,

Fig. 5

einen Schnitt annähernd nach der Linie V - V in Fig. 2,

Fig. 6

einen Ausschnitt der Fig. 5 in vergrößerter Darstellung,

Fig. 7

den Ausschnitt gemäß Fig. 6, jedoch um 90° verdreht,

Fig. 8

einen Schnitt nach der Linie VIII - VIII in Fig. 2,

Fig. 9

einen Schnitt nach der Linie IX - IX in Fig. 2,

Fig. 10

einen linken Längsabschnitt des Kanalkastens gemäß Fig. 2 in Ansicht von unten,

Fig. 11

einen Ventilschieber in Ansicht gemäß Fig. 4 und in vergrößerter Darstellung,

Fig. 12

den Ventilschieber gemäß Fig. 11 in Seitenansicht,

Fig. 13

den Ventilschieber gemäß Fig. 11 in teilweise geschnittener Draufsicht und

Fig. 14

eine schräge Draufsicht auf das linke Ende des Kanalkastens gemäß Fig. 2.

These and further features of preferred developments of the invention are apparent from the claims and also from the description and the drawings, the individual features being implemented individually or in groups in the form of subcombinations in one embodiment of the invention and in other areas, and can represent advantageous and protectable versions. An embodiment of the invention is shown in the drawings and is explained in more detail below. The drawings show:

Fig. 1

an irrigation device according to the invention in a partially sectioned view,

Fig. 2

1 in an open side view,

Fig. 3

2 in top view,

Fig. 4

a section approximately along the line IV - IV in Fig. 1,

Fig. 5

a section approximately along the line V - V in Fig. 2,

Fig. 6

5 shows an enlarged detail of FIG. 5,

Fig. 7

6, but rotated by 90 °,

Fig. 8

2 shows a section along the line VIII-VIII in FIG. 2,

Fig. 9

2 shows a section along the line IX-IX in FIG. 2,

Fig. 10

3 shows a left longitudinal section of the channel box according to FIG. 2 in a view from below,

Fig. 11

3 shows a valve slide in a view according to FIG. 4 and in an enlarged view,

Fig. 12

11 in side view,

Fig. 13

11 in a partially sectioned plan view and

Fig. 14

2 shows an oblique plan view of the left end of the channel box according to FIG. 2.

The irrigation device 1 according to FIGS. 1 to 14 has a thin-walled, plastic, and essentially two-part spray nozzle housing 2, the length of which is several times greater than its cross-sectional width and that between end supports 5, 6 of a stand 3 or in the region its ends is rotatably or pivotably mounted about an axis parallel to the standing plane and to its longitudinal central axis. The stand 3 has downwardly diverging stirrups 4, which are fastened at their ends to the supports 5, 6.

For the alternating or reversing swivel drive of the spray nozzle housing 2, a drive device 7 is provided essentially in this or between the supports 5, 6 with a water motor 8, which is inserted into a receptacle in the rear end of the housing and lying in the swivel axis . The drive device 7 is assigned a switchover device 9 for changing the swivel angle and the position of the swivel range with respect to a reference plane, the switchover device 9 being adjustable by hand with adjusting rings located between the rear end of the housing 2 and the associated carrier 5.

For the connection of a line connection 11 to spray nozzles 12, 13, 14, the spray nozzle housing has a water guide 10 which is provided essentially along the top of the housing 2 at a distance above the pivot axis and whose clear cross section both in the vertical direction as well as in the width direction is substantially smaller than the associated inner cross section of the housing 2. The line connection 11 is expediently provided in the pivot axis on the side of the associated carrier 5 facing away from the rear end of the housing in the form of a plug-in coupling connector, to which a water hose with a corresponding mating coupling piece can be easily detachably connected. The spray nozzles 12, 13, 14 are provided in a single row parallel to the pivot axis one behind the other over most of the length of the housing 2 directed upwards at its top, such that they lie in an axial plane of the housing 2. The spray nozzles are oriented at different angles, in particular within this plane, the outermost nozzles located at the ends of the row of nozzles preferably being inclined to one another or with respect to a transverse central plane of the row of nozzles, diverging at the largest angle of, for example, approximately 34 °, while this angle of inclination of Spray nozzle to spray nozzle can decrease with increasing approach to the transverse center plane by approximately the same angular dimensions up to approximately 0 °.

The main channel 15 of the water guide 10, from which the spray nozzles 12, 13, 14 are directly supplied with pressurized water, is formed by a separate channel box 16 made of plastic which is inserted or suspended in the spray nozzle housing 2 and which is approximately from the front end of the water motor 8 extends to the front end of the housing 2 and engages in this in such a form-fitting manner that it is secured rigidly in position and transversely to its longitudinal direction relative to the housing 2 only by plug connections. The housing of the water motor 8, through which the entire quantity of water supplied through the line connection 11 flows, has at its front end a water outlet connection 17 projecting in the swivel axis, above which an approximately right-angled downwardly projecting, likewise nozzle-shaped one Water inlet port 18 of the channel box 16 is located. The two connections are connected to one another via an angular connecting elbow 19 which is sealed on the outer circumference of the water outlet connection 17 and likewise sealed in the water inlet connection 18 and can only be held by these plug connections.

As particularly shown in Figures 2 and 3, the channel box 16 is formed only by two components, namely a box body 20 open on a side long side and an approximately strip-shaped box cover 21 which engages in this long side to close the open long side of the box body 20 and for example sealed by ultrasonic welding. The box lid 21 extends essentially over the entire length of the box body. The channel box 16 has substantially square cross-sections in the areas delimiting the main channel 15, so that the box body 20 is approximately U-shaped in cross-section due to the design described in these areas and the box lid 21 serves to connect the U-legs .

The upper box wall 22, formed in the middle region of the row of nozzles by the U-leg of the box body 20, is formed in one piece with mushroom-like projecting nozzle heads 23, each of which is penetrated by a nozzle channel 24 aligned in the manner described and thereby one of the spray nozzles 12, 13 , 14 forms. Between the spherical cap-shaped head sections of the nozzle heads 23 and the upper box wall 22, on both sides, lateral side grooves 25 are provided laterally in the nozzle heads over the length of the row of nozzles, one side flank of which is formed by the top of the upper box wall 22 and the other side flank of which is formed by the undersides of the spherical ball-shaped head sections , so that these head sections reduced over like a shaft Pass sections 26 into channel box 16. These sections 26, which are penetrated by the nozzle channels 24, form intermediate sections of a longitudinal web 27 which extends over the row of nozzles and extends across the width or height of the side grooves 25 and forms a joint web with the sections 26.

The spray nozzle housing 2 consists of two essentially mirror-symmetrical, complementary housing shells 28, 29 which essentially connect to one another in the axial plane of the housing axis coinciding with the nozzle plane, with their wall edges facing one another, and are connected to one another in the region of these wall edges by ultrasonic welding or the like . In the area of the row of nozzles, the two housing shells 27, 28 do not directly adjoin one another, but rather each on one side of the longitudinal web 27, engaging in the side grooves 25, so that the spherical-spherical sections of the nozzle heads 23 above the top wall 29 of the housing 2 protruding and this top wall overlapping safety buttons form with which the channel box 16 is suspended on the top wall 31 of the spray nozzle housing 2.

The housing 2 is stepped approximately cylindrical over most of its length in its basic shape. In the rear area, which receives the drive device 7, the housing 2 forms a box-shaped area which projects downward beyond the cylindrical basic shape. In the area of the row of nozzles, longitudinal recesses are provided in the cylindrical basic shape on both sides, the bottom walls of these longitudinal recesses merging into wall parts 32 projecting upward above the cylindrical basic shape, which form the approximately flat top wall 31, which is substantially narrower than the diameter of the cylindrical basic shape. As a result, there are two lateral, approximately parallel to each other and on both sides of the axial plane of the row of nozzles lying wall parts 32 formed, which connect at an angle to the top wall 31 down. The housing axis 30 lying in the pivot axis essentially coincides with the central axis of the cylindrical basic shape.

At the front, bevelled end, the channel box 16 is provided with a cleaning opening 33 which is delimited by a connecting piece which engages in the top wall of the spray nozzle housing 2 and which can be closed in a detachable manner with a cover 34 which is accessible from the outside. A nozzle needle 35 for cleaning the nozzle channels 24 can be provided on the inside of the cover 34.

The three rearmost spray nozzles 13 and the three frontmost spray nozzles 14 of the row of nozzles can each be switched on and off independently of one another in the sense that they can be connected to the water guide 10 by hand or blocked off from it or throttled in terms of their inlet cross section. For this purpose, a check valve 36 in the form of a slide valve is provided for each of these spray nozzles 13 and 14, with all slide valves lying parallel to one another and preferably in the common axial plane of the spray nozzles directly adjacent to the inner ends of the associated nozzle channels 24.

Coaxial with the nozzle head 23 of each adjustable spray nozzle 13 or 14, a pipe socket-shaped cylindrical valve channel 37 is provided within the channel box 16, which protrudes in one piece from the upper box wall 22 down to the underside of the main channel 15 and is open at this lower end 39 is. Each valve channel 37 penetrates the main channel 15 in the area of its associated longitudinal section with its jacket, in such a way that this valve channel 37 can be connected to the main channel 15 only by providing a side inlet 38 in its jacket as an opening. The main channel 15 is in the area of the shut-off valves 36 or in the area of the respective group of adjacent, adjustable spray nozzles 13 or 14 by a gradation of the upper box wall 22 downwards and by an arrangement in cross section offset laterally with respect to the common axial plane of the spray nozzles according to FIGS. 5 and 9 reduced, the main channel and the respective valve channel 37 being delimited and separated from one another in the associated area by a single common intermediate wall in which the side inlet 38 is provided.

From the lower, open end 39 a piston-shaped valve spool 40 is inserted into each valve channel 37, the valve slide 40 carrying two axially spaced ring seals, which in its retracted, lowest end position releases the side inlet 38 and thus its connection to the associated nozzle channel 24 while it is in its other end position, for example on the inside of the upper box wall 22, blocks the side inlet 38 and thus the valve channel 37 with respect to the main channel 15. For this purpose, the valve slide 40 is formed in one piece with a handle 42, with which it forms a slide part 41 which is essentially U-shaped in the longitudinal view of the housing 2 and has U-legs 43 pointing upwards.

The web-shaped U-crosspiece 44 of this slide part 41 has the valve slide 40 projecting freely in the middle of its width and lying between the U-legs 43, while the approximately parallel plate-shaped U-legs 43 each have a molded-on individual handle at their upper ends Form 42 with the handle surfaces facing away from each other and the upper pressure surfaces. The individual handles 42 engage in recesses in the wall parts 32 which are adapted to them and on the inner sides of which the U-legs 43 lie, so that the slide part 41 is guided in a precisely defined manner thereby and by the valve slide 40. In the open position 4, the upper sides of the handle 42, which is also guided in lateral recesses in the upper box wall 22, lie approximately flush with the upper side of the top wall 31 of the spray nozzle housing 2, at least one facing inward over the inside of the associated U-leg 43 protruding single handle 42 can strike on the top of the profile section of the box body 20 forming the main channel 15.

To close the associated spray nozzle, the handle 42, as shown in Fig. 1 for the last two spray nozzles 13, 14, is moved upward, so that it protrudes on both sides of the associated nozzle head over the top of the spray nozzle housing 2, but for her Engagement in the respective wall part 32 provided recess 45 remains essentially closed in that this recess 45 is completely covered on the inside by the associated U-leg 43. Corresponding continuations of these recesses 45 in the top wall 31 and in the upper box wall 32 remain closed in each position by the individual handles 42.

Claims (11)

1. Sprinkler with a spray nozzle casing (2) connectable to at least one water pipe and which has at least one water distributor (10) and on which is provided at least one spray nozzle (12, 13, 14), the spray nozzle casing (2) being provided with at least one separate main channel (15) of the water distributor (10), characterized in that the spray nozzle casing (2) is constructed as a support profile for at least one main channel (15).
2. Sprinkler according to claim 1, characterized in that the water distributor (10) in the vicinity of the spray nozzles (12, 13, 14) is formed by at least one main channel (15), which is narrower than the casing cross-sections and in particular by a single main channel (15) and that the spray nozzle casing (2) is substantially sealed with respect to the main channel (15) and is in particular constructed for pivotable mounting on at least one support (5, 6).
3. Sprinkler according to claim 1 or 2, characterized in that the main channel (15) for spray nozzles (12, 13, 14) is formed by at least one separate component secured on the spray nozzle casing (2) and in particular as a channel box (16) parallel to the spray nozzle casing (2) and extending over most of its length, that preferably the main channel (15) has the spray nozzles (12, 13, 14) and is in particular constructed substantially in one piece with the spray nozzles (12, 13, 14) and that preferably the main channel (15) is substantially positioned within the spray nozzle casing (2), respectively substantially exclusively the spray nozzles (12, 13, 14) project over the top of the spray nozzle casing (2) and the channel box (16) engages on the inside of a cover wall (31) of the spray nozzle casing (2).
4. Sprinkler according to one of the preceding claims, characterized in that the spray nozzle casing (2) is formed from two lateral casing shells (28, 29), which in particular engage with oppositely directed cover wall parts below nozzle heads (23) of the spray nozzles (12, 13, 14) in the vicinity of lateral grooves (25) and/or are connected on either side to a longitudinal web (27) connecting the nozzle heads (23), that preferably the main channel (15) is essentially fixed by hanging in and/or at least one plug-in connection to the spray nozzle casing (2), respectively the nozzle heads (23) form connection heads, which engage on the top of the spray nozzle casing (2) and that preferably a channel box (16) forming the main channel (15) is essentially formed by a box body (20) open on in particular a lateral longitudinal side and a box lid (21) closing the open longitudinal side and in particular the channel box (16) has at the rear end a water inlet connection (18) constructed as a plug-in connection or the like.
5. Sprinkler according to one of the preceding claims, characterized in that an end of the main channel (15) in particular adjacent to a swivel driving mechanism (7) is at a distance from the associated end of the spray nozzle casing (2) and is preferably so set back with respect to a receptacle of the spray nozzle casing (2) for a hydraulic motor (8) or the like, that the casing shells (28, 29) are directly interconnected in the vicinity of the cover wall (31) and following onto the end of the main channel (15).
6. Sprinkler having a plurality of spray nozzles (12, 13, 14), particularly according to one of the preceding claims, characterized in that it has means (36) with which at least one of the spray nozzles (13, 14) is disconnectible independently of at least one further spray nozzle.
7. Sprinkler according to one of the preceding claims, characterized in that at least one from a row of successive spray nozzles (12, 13, 14) located at a row end and particularly in each case several spray nozzles located at each row end are disconnectible, particularly independently of one another, that preferably disconnectible spray nozzles (13, 14) are substantially located in a plane and are preferably inclined from the centre of the row towards the outside and that preferably between a main channel (15) constructed for connection to a water pipe and at least one spray nozzle (13, 14) is provided a manually operable check valve (36), particularly a slide valve which can be continuously transferred between an open position and a closed position.
8. Sprinkler according to one of the preceding claims, characterized in that at least one disconnectible spray nozzle (13, 14) is positioned at the end of an in particular connecting piece-like valve port (37) having a lateral inlet (38) and in whose end (39) remote from the spray nozzle (13, 14) is inserted a piston-like valve slide (40).
9. Sprinkler according to one of the preceding claims, characterized in that a disconnecting handle (42) for at least one disconnectible spray nozzle (13, 14) is positioned laterally, particularly on either side, adjacent to spray nozzle (13, 14) and is accessible from the outside of the spray nozzle casing (2) and is preferably formed by the legs (43) of a U-shaped slide part (41), which is provided on the U-cross-web (44) with the valve slide (40) projecting in the same direction as U-legs (43).
10. Sprinkler according to one of the preceding claims, characterized in that a disconnecting handle (42) in particular located in recesses (45) of the spray nozzle casing (2) and used for at least one disconnectible spray nozzle (13, 14) extends in the open position at the most up to the top of the casing (2) and in the closed position preferably projects over the top and the associated spray nozzle (13, 14).
11. Sprinkler according to one of the preceding claims, characterized in that at least one disconnectible spray nozzle (13, 14) and/or a check valve (36) associated therewith is provided on the channel box (16), whose main channel (15) is preferably positioned laterally outside the valve channel (37) in the vicinity of the disconnectible spray nozzle (13, 14) and/or is downwardly displaced with respect to spray nozzle (13, 14).

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