DE2111132A1 - Water sprinkler for gardens - Google Patents

Description

Water sprinkler for gardens.

The invention relates to a water sprinkler for gardens, such as those commonly used for sprinkling lawns used and a rod-like warhead have, which can be pivoted in an oscillating manner about a horizontal axis and can be driven by means of a device, which is operated by the water flowing into the sprinkler head. The sprinkler head swings back and forth in the company here j the water jets emerging from it are swiveled back and forth, so that a large surface area can be watered without it being necessary to change the location of the sprinkler.

In a most common type of water sprinkler, the rod-like sprinkler head is by means of a Water motor operated, which always rotates in the same direction and the oscillating movements of the sprinkler head by means of a crank device generated. In another embodiment of such water sprinklers, the direction of movement periodically reversed of the motor in order to generate the desired oscillation movement.

In both embodiments, the drive device is

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it is common to provide an adjustment so that the angle over which the rod-shaped sprinkler head can be swung back and forth can be changed by the to be able to reduce or enlarge the area irrigated by the sprinkler from one point. Independent However, depending on the size of the oscillation angle, the central position of the oscillation movement always remains the same; it will be vertical when the sprinkler is set up on a level surface. So it will be The same size areas are always watered on both sides of the sprinkler.

According to the invention, in a water sprinkler of the type mentioned, the device for pivoting back and forth the rod-shaped warmer head on a water motor, which drives the sprinkler head by means of a reduction gear and a slip clutch and one Has reversing device at the ends of the oscillating movements of the warmer head is actuated by parts oscillating together with the warmer head. These Parts are adjustable with respect to their angular position relative to the sprinkler head. By adjusting accordingly these parts and by turning the sprinkler head with respect to the reduction gear, taking advantage of the Adjustment of the slip clutch can both the The angle of oscillation of the sprinkler head and the angular position of its center of oscillation can be changed.

With a sprinkler designed in this way, the setting can be made, for example, so that the rod-shaped sprinkler head in such a way that the water swings back and forth in such a way that the water only ever passes through the swing axis on one side through vertical plane exits. The arrangement according to the invention, which is not only the size the oscillating movement, but also to change its central position, thus multiplying the possible applications.

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the new sprinkler. For example, it is possible to water a flower bed by using the sprinkler on one of the Sets up the bed edge and adjusts its swinging movement so that no water goes to the wrong side of the sprinkler is wasted, which is inevitable when using the above-mentioned water sprinkler of conventional design were.

A known type of sprinkler, in which the rod-shaped sprinkler head can be moved by means of a crank device, has the disadvantage that the sprinkler head remains particularly long in the reversal positions of its oscillating movements, so that the water distribution over the entire A

The sprinkler's area of action is not uniform. This disadvantage is particularly important when watering lawns the end. In the sprinkler according to the invention, this disadvantage can not occur; because the swinging movement can be easily adjusted so that the water is evenly distributed. Appropriate the water motor is designed as a pulse turbine and the reversing device consists of two nozzles that feed the water feed the turbine wheel, with a flow of water through the nozzle controlling tilt valve or the like. is operated by actuators, which together with the rod-shaped warmer head swing back and forth. The water flowing through a nozzle sets the turbine wheel in rotation and swivels "

the sprinkler head in one direction while the other nozzle is closed by the tilt valve. The operation of the valve then causes the first nozzle to close and the other nozzle to open. That through this The water flowing through the second nozzle then reverses the direction of movement of the turbine wheel and swivels the warmer head in the opposite direction.

The two actuators that make up the reversing device are useful control, arranged on the output shaft of the reduction gear. The actuators are

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visibly adjustable their angular position on the shaft, which is connected to the sprinkler head via a slip clutch. The warmer head can therefore be compared to the Shaft are adjusted so that its swing stroke change by adjusting the slip clutch without changing the position of the two actuators on the shaft change. The central position of the oscillating warhead is changed, but the angle of oscillation remains unchanged remain.

The aforementioned tilt valve or the like. consists expediently of a double-armed lever pivotally mounted in its center, with a valve closure member at each of its two ends wearing. The lever can be pivoted back and forth by means of the actuators that are connected to the sprinkler head stand. The arrangement is such that in one end position of the pivot lever the one locking member the first nozzle closes while the other closure member is held at a distance from the other nozzle will. If the lever is pivoted into its other end position, the first locking member is removed from it associated nozzle is lifted, while the second nozzle of the closure member sitting at the other end of the lever is closed.

The snap action of the valve is generated by means of a rocker arm, which one under the action a spring standing piston carries, which in turn acts on the double-armed lever. The rocker arm sits on a shaft and is moved between its two angular positions by means of an arm attached to this shaft moved back and forth. The arm is pivoted back and forth by two actuators that are connected to the sprinkler head stand and hit the arm in the two end positions of the sprinkler head swinging back and forth. That Valve and the rocker arm are designed so that in the

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an angular position of the rocker arm its spring-loaded piston with the double-arm lever on one side of the The pivot axis of this lever cooperates so that this double-armed lever is pivoted in one direction. If the rocker arm is then pivoted, the slides spring-loaded pistons on a cam lug provided in the middle of the double-armed lever. The Piston spring compressed. If the piston then moves over the cam shoulder, it passes over the Pivot axis of the double-armed lever away and then snaps over the other side of the cam lug. Included the double-armed lever is moved from one end position to the other with a snap. This snap will still be supported by the water pressure; because when the double-armed lever begins to move into the position in which it closes one of the nozzles, the water pressure acts on the ■ Ver closing link at the end of the lever and thus supports the movement of the Piston.

This embodiment of the valve not only works a lot precise and reliable, but can also be produced easily and cheaply.

Further details and advantages of the invention will become apparent from the following description of one illustrated on the drawing Embodiment of the new water sprinkler emerges.

Fig. 1 shows the water sprinkler in a diagrammatic representation.

Fig. 2 shows the water sprinkler on a larger scale as well in longitudinal section, seen in the direction of arrows II-I.I in Fig. 1.

Fig. 3 shows an end view of the sprinkler in the direction of Arrow III seen in Fig. 1, namely after removing the end cover.

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Pig. Figure 4 is a cross-section on the line IV-IV in Pig.

Fig. 5 shows schematically in front view the engine of the Water sprinkler and illustrates the operation of the reversing device provided in it.

Fig. 6 corresponds approximately to the Fig. 5 ₃ but showing the reversing apparatus in the other setting so that a narrower swinging angle is formed. In addition, the angular position of the central position of the oscillating movement is changed.

The water sprinkler has a housing I ₃ which is made of plastic and has a chamber 2 at its right end (FIGS. 1 and 2) and a second chamber 3 at its left end. The chambers 2 and 3 are connected at their bases by side parts 4 and 5 which are made of one piece with them. The rod-shaped or elongated sprinkler head 7 is mounted between the upper sections of the chambers 2 and 3. This sprinkler head consists of a hollow plastic part with an upper wall 6, a bottom wall 8 _{3 of} an end wall 9 and a special end wall 1O ₃ which is fastened to the remaining part of the sprinkler head by means of screws 11 with the interposition of a seal 12.

The chamber 2 only forms the support for one end of the sprinkler head 7. For this purpose, the chamber a cylindrical pin 13 which is rotatably mounted in a corresponding base 14 of the end wall 10 is. The other chamber 3 also serves to support the sprinkler head 7. However, this chamber also contains the entire engine of the sprinkler.

The end of the chamber 3 facing away from the sprinkler head 7 is closed by means of a removable cover 15, which held by screws 16 and by means of a seal 17

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is sealed. Inside is the chamber 3 by walls

18 j, 19 and 20 in a pressure chamber 21, a second chamber and divided into rooms 23 and 24. A tubular pin 25 for connecting a hose is in an approach 26 screwed in with the end cover 15 from a Piece consists. The connecting pin 25 is connected to the pressure chamber 21 via a filter 27.

As can be seen clearly from Fig. 3 of the drawing, the partition 18 has two openings 28 and 29. These openings form nozzles. Inside the pressure chamber 21 is on the underside of the partition 18 a double

arm lever 30 pivotally mounted. The ends of this ™

Lever arms form valve closure members which close either the opening 28 or the opening 29, depending on the position into which the lever arm 30 has been pivoted. Above the wall 18 is located in the second chamber 22 a Wasserturbinenrad 31, which is made of plastic by injection molding and is made with an axis 32 (Fig. 2) in one piece. This axis is designed as a worm. The ends of the axle 32 are rotatably mounted in sockets 33 ^and 34 which are provided in the cover 15 or in the wall 20. The worm formed by the shaft 32 meshes with a worm wheel 35s which consists of one piece with a vertical shaft 36. This wave | is mounted in base lugs 37 and 38. The shaft also carries a worm 39 ₃ which meshes with a further worm wheel 40 which is seated on a hollow axle 4l. The worm formed by the axis 32 with its worm wheel 35 and the worm 39 with the worm wheel 40 form an underdrive mechanism, the output shaft of which is formed by the axis 41. This axis is mounted in the wall 20 and in a further VJand 42 near the adjacent end 3es Sprengerkopi'es f drc -hhar.

The right end (Fig. 2) of the shaft 41 has a pin-like extension 43 of smaller diameter and projects ^ nit this pin through a hole in the end wall 9 of the sprinkler head J. The pin 43 is guided tightly in this hole and between the end of the Shaft 4l and the end wall a sealing ring kk is provided. The close fit of the pin 43 in the bore of the end wall 9 forms a friction or slip clutch between the shaft 41 and the sprinkler head 7

Between the walls 20 and 42, two actuators 45 and 46 are arranged on the shaft 4l in the space 24. Each actuator consists of an annular part 47 or with projecting fingers or lugs 49 and 50 provided thereon. The annular parts have sector-shaped lugs 51 and 52 which extend upwards from the upper part of the chamber. 3 protrude. The finger-like lugs protrude downwards in the direction of an arm 53 which is firmly attached to a shaft 54. As can be seen from FIG. 2 XSt ₃ , the shaft 54 protrudes through the walls 20 and 19 into the chamber 21. Inside this chamber 21, a rocker arm 55 is attached to the end of the shaft 54. A spring 57 and a piston 58 are located in a recess 56 of the rocker arm. The piston is pressed upwards by the spring against a cam projection 59, which consists of one piece with the double-armed lever 30.

The water sprinkler works as follows:

By means of a hose, water is passed through the tubular connecting pin 25 into the pressure chamber 21 which it flows to one of the nozzle openings 28 or 29, which are opened by the valve lever 30 at this moment is. In the operating position illustrated in FIG. 3, the water will therefore flow through the nozzle 28 and the water jet on the one opposite the opening

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hit the tooth of the turbine wheel 31, which is then rotated clockwise. The rotation of the wheel 31 is then by means of the reduction gear, the Output shaft 41 and the friction clutch, which are formed by the fit of the pin 43 in the bore of the wall 9 is transferred to the sprinkler head 7, which is also clockwise (from the inlet end of the sprinkler viewed from here) is pivoted. If the water has hit the wheel, it flows through the second chamber 22 and arrives through the tubular output shaft 4l into the sprinkler head, from which it emerges in the form of a jet through holes 60 provided in the upper wall 6. The sprinkler | head continues its clockwise movement until the pinger attachment 49 hits the arm 53 and this pivoted counterclockwise (Fig. 4). The movement of the arm 53 counteracts the rocker arm 55 clockwise (Pig. 3) pivoted until its left end hits the oil chamber 21 against the bottom. at This movement of the rocker arm 55 causes the piston 58 to slide via the cam shoulder 59. As soon as the pressure direction of the spring 57 passes through the pivot axis of the valve lever 30 this lever is adjusted snapping clockwise (Fig. 3) until its left end the nozzle opening 28 has closed and the nozzle opening 29 has been released. The water then flows through the nozzle opening 29 and rotates the turbine wheel 31 and thus also the sprinkler head 7 counterclockwise. This movement continues until the finger 59 returns the arm 53 to the position illustrated in FIG. 4 of the drawing has swiveled back. Slides during this process the piston 58 on the cam extension 59 into the position illustrated in FIG. 3. This is where the valve lever 30 is pivoted counterclockwise so that it closes the nozzle opening 29 and the nozzle opening releases. Then the entire work cycle begins again.

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If a torque is exerted from the outside on the forces acting between the helical gear 40 and the screw 39, a rotation of the output shaft 4l can be prevented. If the externally corrugated quadrants 51 and 52 are adjusted with the pinger, the rings 47 and 48 are rotated on the shaft 41 so that the pinger attachments 49 and 50 are either moved towards or away from one another. The sprinkler head 7 can also be adjusted by hand. If this happens, the front wall 9 of the sprinkler head moves on the pin 43 , ie the slip clutch is actuated so that the sprinkler head assumes a different or new angular position with respect to the finger attachments 49 and 50.

So the pinger approaches 49, 50 are set as this in Pig. 5 is illustrated and the sprinkler head 7 is symmetrical to the fingers, the sprinkler head swings 7 between that in Pig. 5 with full lines illustrated position 7 and with dash-dotted lines Lines illustrated location 7 · The one from the warmer head exiting water jets swing between the positions indicated by the arrows 62 and 63 and here.

If, on the other hand, fingers 49 and 50 are moved closer to one another, As illustrated in FIG. 6, the sprinkler head swings from position 7 only into position 7 (Fig. 6); the oscillation angle is therefore considerably reduced. Is also the sprinkler head 7 on the Pin 43 in an asymmetrical position with respect to the Finger lugs 49 and 50 twisted, as illustrated in FIG. 6 is, so the sprinkler head 7 swings from a position in which the water emerges vertically upwards, in another end position in which the water jets are directed to the right, as indicated by arrows 64 and 65 is indicated in FIG. 6. With this swinging movement

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are the finger socks 49 and 50 between the in Fig. 6 with positions shown by full lines and the positions 49 shown with dash-dotted lines or 50 'moved back and forth. The arm 43, however, swings always at the same angle between the positions 53 and 53 'illustrated in FIGS. 5 and 6 back and forth.

Patent claims:

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Claims (1)

Patent claims: Il.j water sprinkler for gardens with a rod-shaped or elongated sprinkler head oscillating about a horizontal axis, which can be driven by means of a device which is operated by the water flowing to the sprinkler head, a water motor being provided in the drive device is, which drives the sprinkler head through the intermediary of a reduction gear, on which a reversing device acts at the ends of its oscillating movements, characterized in that the reversing device has actuators (49, 50) which oscillate together with the sprinkler head (7) and relative to it in their angular position to each other are adjustable, and that a friction or slip clutch (9, 43) is provided between the reduction gear (32, 35 »39, 40) and the sprinkler head, so that by adjusting the actuators (49, 50) and rotating the sprinkler head relative to the gear (40) with slipping of the clutch (9 _S 43) both the size of the oscillation angle of the S prengerkopfes and the angular position of the center of the oscillating movement is adjustable. 2. Water sprinkler according to claim 1, characterized in that that the water motor as a pulse turbine wheel (31) is formed and the reversing device has two nozzles (28, 29) for supplying water to the turbine wheel as well has a tilt valve (30) which steuez't the water flow through the nozzles and through the actuators (49, 50) is actuated, the water flow through the one nozzle (28) the turbine wheel (31) and the sprinkler head (7) rotates in one direction while the other nozzle (29) is closed by valve (30), whereupon by actuating the valve (30) the first nozzle (28) 20982 6/0503 is closed and the second nozzle (29) is opened and the flow of water through the second nozzle, the direction of rotation of the turbine wheel and the swinging motion of the sprinkler head reverses. Water sprinkler according to Claims 1 and 2, characterized in that the two actuating elements (49, 50) which actuate the reversing device (53) are arranged on an output shaft (41) of the reduction gear (40) and are adjustable in their angular position on this shaft acts on the sprinkler head (7) via a friction clutch (9 _{a 43).} Water sprinkler according to Claims 2 to 3 _S, characterized in that the reversible tilting valve consists of a two-armed lever (30) rotatably mounted in its center and provided with a valve closure member at each end, which is supported by the actuators (49,; 50) Intermediate members (53, 54, 55s 58, 59) can be tilted back and forth, whereby in one angular end position of the lever (Pig. 3) a closure member closes one nozzle, while the other closure member releases the other nozzle (28), while in the other angular end position of the lever (30, Fig. 5 and 6), the first closure member releases one nozzle (29) and the other nozzle (28). is closed by the locking member at the other end of the lever. Water sprinkler according to claim 4, characterized in that that the tilting of the valve lever (30) by means of a Rocker arm (55) takes place, which carries a piston or the like under the action of a spring (57), which on the valve lever (30) acts, the rocker arm mounted on a shaft (54) and by means of one on the arm attached to the same shaft. (53) between angular end positions can be pivoted back and forth, the arm (53) moving back and forth through the actuators (49, 50) 209826/0503 which touch it at the end of the oscillating movements of the warmer head, and that the piston (58) cooperates with a cam extension (59) and slides over the cam extension when the rocker arm is tilted such that the spring (57) is compressed with the piston (58) over the cam lug and is moved about the axis of rotation of the lever (30) and on the other side of the cam attachment slides down from him and suddenly the lever (30) from one end position to the other end position. 6. Water sprinkler according to claim 5 » characterized in that the lever (30) with its closure members and the rocker arm (55) is arranged within a pressure chamber (21) which is connected to the water source via a connection (25). 7. Water sprinkler according to claim 6, characterized in that that the pressure chamber (21) has two openings (28, 29) forming the nozzles in its wall (18), the two Nozzles are on different sides of the axis of rotation of the turbine wheel (31). 8. water sprinkler according to claim 7 _a, characterized in that the turbine wheel (31) and the reduction gear (32s 35, 39, 40) are arranged within a secondary chamber (22), and that the output shaft (41) of the reduction gear is designed as a hollow shaft and communicates with the secondary chamber (22) and the sprinkler head (7). 9. Water sprinkler according to claims 6 to 8, characterized in that that the shaft (54) protrudes from the pressure chamber (21) and carries the arm (53) outside the chamber, which is directed upwards in the direction of the output shaft (41) and each actuating member has a ring (47) (48) which is fastened in friction on the output shaft 209826/0503 is and has an actuator (49, 50) designed as a protruding finger, which when rotated The output shaft (4l) pushes against the arm (43) and thus rotates the rocker arm (55). 10. Water sprinkler according to claim 9, characterized in that that the rings (47, 48) have sector-shaped projections (51, 52) with a knurled circumference of the rings protrude outwards for the purpose of adjusting the rings (47, 48) on the output shaft (41) by hand. 11. Water sprinkler according to claims 5 to 10, characterized characterized in that the friction clutch by a part (43) of the output shaft (41) is formed, which is fitted tightly into an opening of the sprinkler head (7), 209826/0503