DE102007042180A1 - Device for sprinkling grass, especially for home gardens or parks - Google Patents

Abstract

A device for grass blasting, in particular for home gardens or parks, has a housing (1) and a mounted lawn sprinkler, depending on the water pressure from a bottom up the water supplying water pipe to an upper spray position (14) or a lower rest position (15) is adjustable, and serves very low water pressure to maintain the functions. In this case, the housing (1) by means of the upper opening edge (1b) occlusive inspection cover (7) is covered, in which a central passage opening (8) for a pop-up sprinkler (9) is provided, wherein the pop-up sprinkler (9) with a piston (9a ) within a housing (1) axially fixed cylinder (3) is arranged vertically adjustable and on a further central shaft (1) with a short rod at the top of a lightweight cover (12) is fixed and wherein the piston (9a) together with the lightweight cover (12) by the (reduced) water pressure in an upper spray position (14) or when switching off the water pressure in the lower rest position (15) is adjustable.

Description

The The invention relates to a device for grass blasting, in particular for home gardens or parks, with a housing, an attached lawn sprinkler, which depends on the water pressure of a from bottom to top the water supplying water pipe adjustable to an upper spray position or a lower rest position is.

Such a device is generally from the German utility model 20 2006 013 510.3 known. Thereafter, a lawn sprinkler can be adjusted by means of water pressure at different altitudes at the output of a housing, wherein at the output of this housing a cross-section of the housing covering cap is arranged, which closes the housing for water shutdown for whatever reason and so protects from the weather. This device has proven itself and will continue to be used. However, it was found that in some places of the installation with different water pressures of the piping network must be expected. In this case, at very low water pressures, for example. When the removal of consumers increases in high demand, which occurs particularly serious in the summer months, the phenomenon is that at very low water pressure due to the higher weight of the cover cap, a slight lifting of the nozzles from the lowered position to the upper position is no longer possible at all times.

Of the The invention is therefore based on the object, the functionality the device upright even at very low water pressure so that largely independent of the local ruling or temporarily adjusting water pressure of automatism, turning on the nozzles or turning them off To control water pressure is maintained.

The Asked task is inventively characterized solved that the housing by means of the upper opening edge occlusive inspection cover is covered in the a central passage opening for a pop-up sprinkler is provided, wherein the pop-up sprinkler with a piston inside height adjustable to the housing axially fixed cylinder is arranged and on another centric shaft with a short rod attached to the top of a lightweight cover and wherein the piston together with the lightweight cover by the water pressure in an upper spray position or at shutdown the water pressure in the lower rest position is adjustable. Of the Advantage is a substantial independence from the local and time prevailing water pressure, so the slight Weight of the piston together with the centric shaft and the Weight of the cover can always be lifted. Thus there is one high security that the system of switching on and off of water rain in such equipment always works reliably.

A Embodiment of the device is that the outer diameter the lightweight cover appropriately larger is the diameter of the central passage opening for the piston. For one thing, it's a very big one Diameter of the central passage opening not necessary and second, the outer diameter of the lightweight Cover is not very large and there is a sufficient Protection for the components in the cylinder.

The Arrangement of components inside the cylinder is advantageous designed to receive the piston inside (Pressure) cylinder at the upper end by means of a radially projecting End ring is held, which is a guide for the outer periphery of the pop-up sprinkler. This results in a simple but dense storage and detachable Holder of the (pressure) cylinder.

There the weight of the inspection cover is no longer important, can for practical reasons and for a special attachment To spare, the inspection cover with its wall thickness to a stiff Be formed component. This is also by mere Hang up the stiffness of the cylindrical housing supports.

On the other hand Can add weight to the lightweight cover thereby Saved that lightweight plastic cover is formed with integrally formed retaining arms.

Although Also special versions of the pop-up gun operational it is advantageous that the pop-up sprinkler is a commercially available, ready to use and connectable unit forms. As a result, the technical experience of the manufacturer in the device.

A Improvement further illustrates that one or more exit nozzles on the outer circumference of the piston open and in (upper) Spray position radially outwards and diagonally to up, horizontally and / or downwards.

In The drawing is an embodiment of the invention shown in detail below.

The sole figure of the drawing shows the upper part of the device for grass sprinkling, which in larger numbers in rows, patterns or after usual in horticultural aspects in Hausgär th or parks are distributed. Of course, a single arrangement, such as. Centrally in circular systems is possible and advantageous. A housing 1 encloses in its interior 1a a firmly arranged mounting plate 2 Having a cylinder at a reasonable distance 3 with a lawn sprinkler 4 of any design. The lawn sprinkler 4 is actuated depending on the water pressure and the cylinder 3 is about an introduction 5 to the cylinder 3 by means of a flexible hose 6 supplied via a (not shown) solenoid valve and a distribution line in the ground with water spray.

The housing 1 is now by means of a revision cover 7 covered. The inspection cover 7 Can be used for assembly or disassembly of the interior 1a be removed components. He lies on the upper edge of the opening 1b loose or fixed on and has a central passage opening 8th on whose diameter is on the outer circumference of a pop-up sprinkler 9 consistently tuned. The pop-up sprinkler 9 is commercially available, ie known as a finished unit and known in its structure. The pop-up sprinkler 9 consists of the cylinder 3 and is through a closing ring 10 with centric guide 10a at the upper end 3a held. The pop-up sprinkler 9 can with its outer cylindrical shaft through the passage opening 8th be passed through or dismantled. In operation is the piston 9a about the water pressure against the cylinder 3 raised and lowered over the water pressure, so that a centric shaft 11 who has a lightweight cover 12 carries to a hub 13 is adjusted in height, as long as the water pressure acts. The lightweight cover 12 covers the passage opening 8th off and lies (as drawn in solid lines) in the lower position of the pop-up sprinkler 9 on the inspection cover 7 on.

In the drawn with dashed lines upper spray position 14 of the extended piston 9a this takes around the hub 13 the upper extended position, ie the spray position 14 one.

The solid lines of the lightweight cover 12 describe the lower resting position 15 ,

The outer diameter 12a the lightweight cover 12 is suitably larger than the diameter of the central passage opening 8th for the piston 9a ,

The pop-up sprinkler 9 is as described commercially available and as a unit as drawn commercially available with the inside as a piston 9a formed movable lifting part, on which at the top of the more centric shaft 11 the lightweight cover 12 in the form of a circular disk with curved edges bears. The inner diameter of the end ring 10 is as a guide 10a fitted to the outer circumference.

As it is on the weight of the revision cover 7 for the stroke adjustment no longer arrives, and only the weight of the lightweight cover 12 is to lift and thus the water pressure can be very low, is the inspection cover 7 with its wall thickness 7a (preferably made of stainless steel) formed into a rigid component.

On the other hand, there is the lightweight cover 12 Made of a lightweight plastic with molded or otherwise attached retaining arms.

One or more outlet nozzles 16 open at the outer periphery of the pop-up sprinkler 9 and are as drawn in the upper spray position 14 directed radially outwards and obliquely upwards, horizontally and / or downwards, so that each drop swarms 17 be generated.

1

casing

1a

Interior

1b

opening edge

2

mounting plate

3

cylinder

3a

upper The End

4

sprinkler

5

introduction

6

flexible tube

7

Access Doors

7a

wall thickness

8th

Through opening

9

up sprinklers

9a

piston

10

end ring

10a

guide seat

11

Another centric shaft

12

lightweight cover

12a

outer diameter

13

stroke

14

spray position

15

rest position

16

vents

17

drop swarm

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 202006013510 U [0002]

Claims (7)

Device for sprinkling grass, in particular for home gardens or parks, with a housing ( 1 ), an attached lawn sprinkler, the dependent on the water pressure from the bottom up the water supplying water pipe to an upper injection position ( 14 ) or a lower rest position ( 15 ) is adjustable, characterized in that the housing ( 1 ) by means of an upper opening edge ( 1b ) closing inspection cover ( 7 ) is covered, in which a central through hole ( 8th ) for a pop-up sprinkler ( 9 ), wherein the pop-up sprinkler ( 9 ) with a piston ( 9a ) within a housing ( 1 ) axially fixed cylinder ( 3 ) is arranged adjustable in height and at a further central shaft ( 11 ) with a short rod at the top of a lightweight cover ( 12 ) and wherein the piston ( 9a ) together with the lightweight cover ( 12 ) by the water pressure in an upper injection position ( 14 ) or when switching off the water pressure in the lower rest position ( 15 ) is adjustable. Device according to claim 1, characterized in that the outer diameter ( 12a ) of the lightweight cover ( 12 ) is suitably larger than the diameter of the centric passage opening ( 8th ) for the piston ( 9a ). Device according to claim 1, characterized in that the piston ( 9a ) inside receiving cylinder ( 3 ) at the upper end ( 3a ) by means of a radially protruding end ring ( 10 ) holding a guide receptacle ( 10a ) for the outer periphery of the pop-up sprinkler ( 9 ). Device according to claim 1, characterized in that the inspection cover ( 7 ) with its wall thickness ( 7a ) is formed into a rigid component. Device according to claims 1 or 2, characterized in that the lightweight cover ( 12 ) is formed of plastic with molded retaining arms. Device according to claims 1 to 3, characterized in that the pop-up sprinkler ( 9 ) forms a commercially available, ready-to-use and connectable unit. Device according to one of claims 1 to 3, characterized in that one or more outlet nozzles ( 16 ) on the outer circumference of the piston ( 9a ) and in (upper) injection position ( 14 ) are directed radially outwards and obliquely upwards, horizontally and / or downwards.