DE29513733U1 - Drainage system - Google Patents

Description

BOEHMERT & BOEHMERT, NORDEMANN and PARTNERS

LAW FIRM

B & B, N u. P, Niemannsweg 133, D-24105 Kiel

German Patent Office
Zweibrückenstr. 12

8 0297 Munich

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Your letter Your Letter of DR.-ING. KARL BOEHMERT, PA (1933.19731 DIPL.-ING. ALBERTBOEHMEKT, PA,1954-199« WILHELM J. H. STAHLBERG, RA, Bremen DR.-ING. WALTER HOORMANN. PA·, Bremen DSPL.-PHYS. DR. HEINZ GODDAR, PA*, Munich DR.-ING. ROLAND LiESEGANG, PA*, Munich WOLF-DIETER KUNTZE, RA, Bremen DIPL.-PHYS. ROBERT MÜNZHUBER, PA 11965.19921 DR. JUR. LUDWIG KOUKER. RA, Bremen DR. (CHEM.) ANDREAS WINKLER, PA·, Bremen MICHAELA HUTH, RA, Bremen DIPL-PHYS. DR. MARION TÖNHARDT, PA*, Düsseldorf DR. JUR. ANDREAS EBERT-WEIDENFELLER, RA, Bremen DR. JUR- AXEL NORDEMANN, RA, Bremen DIPL.-1NG. DR. JUR. JAN TÖNNIES, PA, RA, Kiel DIPL.-PHYS. CHRISTIAN BSEHL', PA, Kiel DIPL.-!NG. EVA LIESEGANG, PA, Munich

PROF. DR. JUR. WILHELM NORDEMANN, RA". at.

DR. JUR. KAI VINCK, RA", Berlin

PROF. DR. JUR. PAUL W. HERTIN, RA**, Berlin

KLAUS VOM BROCKE, lawyer, Berlin

HERMANN-JOSEF OMSELS, lawyer, Berlin

HORST HUMMEL, LAWYER, Berlin

DR. JUR. MONIICA PASETTI, LL.M., RA***, bebu-.

GABRIELE TTTZ, Attorney at Law Leipzig

PA - Patent Attorney RA - Attorney at Law * - European Patent Attorney ** - Notary public **·- Attorney at Law (N.Y.)

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L5062

Kiel 25.08.1995

Rolf Lamp, Zum Hegenwohld 4, 24214 Noer

Drainage system

The invention relates to a drainage system for draining, in particular, arable land, with at least two shafts and a plurality of pipes, of which at least one flows into a receiving water body.

Such drainage systems for draining arable land in particular are used in a variety of ways. In the known systems, the water is led through drainage pipes laid over large areas to a shaft and from there it is drained into a receiving water body in a pipe.

940

Bremen:

Hoilerallee 32. D-28209 Bremen
PO Box 10 71 27, D-28071 Bremen

Telephone (04 21)3 40 90
Fax (04 21) 3 49 17 68
Telex 244 958 bopai d

Berlin:

Uhlandsstrasse 173/174 D-10719 Berlin

Telephone (0 30)8 81 10 36 Fax (0 30) 8 81 39 27

Munich:

Franz-Ioseph-Siraße 38 D-80S01 Munich

TeliptiunJS S9i 34 TJ 80*

iTSefa.» <(»«9)34?£ 10

&Tgr;&egr;&Igr;&*&phgr;4 282 {lAo 3 . Leipzig:

Philipp-Rosemhal-Stralie 21 D-04103 Leipzig

Fax (03 4*) 31 03*25

Dusseldorf:

Neßlerstrasse D-40593 Düsseldorf

Telephone (02 11)71 89 Fax (02 11)7 18 27

Kiel:

Niemannsweg D-24105 Kiel

Telephone (04 31)8 40 Fax (04 31)8 40

BOEHMERT &

In the known system, the pipe that runs from the shaft to the receiving water must have a certain minimum gradient over the entire length so that the water can flow away. If this gradient must be 0.5%, drainage is only possible to a height of 1 m above the water level of the receiving water for a length of 200 m. Another problem is that with the known system, if the pipe runs through a hill, it must be buried very deeply, and if it runs through a depression, the pipe lies relatively flat under the ground, so that it can break in frost and can also be damaged by the impact of heavy agricultural vehicles.

The invention is based on the object of creating a drainage system for draining arable land, which allows greater freedom in laying the pipe leading from the shaft to the receiving water body, whereby drainage is possible almost to the level of the water table of the receiving water body.

According to the invention, this object is achieved in that a first shaft is arranged in the area of a depression to be drained, a second shaft is arranged in the area of the receiving water in which drainage is to be carried out and the two shafts are connected to one another via a pipe, whereby the two shafts are arranged at essentially the same height, that the pipe connecting the two shafts is designed to be gas-tight and the inlet of the pipe connecting the two shafts is arranged below the inlet into the first shaft and the outlet of the pipe connecting the two shafts is arranged below the outlet from the second shaft.

BOEHMERT & BOEffM^RT, NORDEMANN m> PARTNER

Preferably, the inlet into the first shaft and the outlet from the second shaft are arranged at essentially the same height. If the highest point of the pipe connecting the two shafts is relatively high in relation to the two shafts, a vent valve should be provided there. A filling connection can also be provided at this point.

The inlet of the pipe connecting the shafts should be located at a distance from the bottom of the first shaft.

The invention is explained below with reference to a drawing. The only figure shows a schematic sectional view through such a system.

The system consists of a first shaft 10, which is arranged in the area of a depression to be drained, a second shaft 12, which is arranged in the area of a receiving water 16 into which drainage is to be carried out, and a pipe 14 connecting the two shafts. In the embodiment shown, a further shaft 22 is also provided in the area of the highest point of the pipe 14 (this is, however, not always necessary for the implementation of the invention).

The two shafts 10, 12 are arranged at essentially the same height. The pipe 14 connecting the two shafts 10, 12 is gas-tight. The inlet of the gas-tight pipe 14 connecting the two shafts 10, 12 is arranged below the inlet 18 in the first shaft 10, the outlet of the pipe connecting the two shafts 10, 12

BOEHMERT & BOEfIRffiRT, NÖRDEMANN and PARTNER

binding pipe 14 is arranged below the outlet 20 from the second shaft 12. The inlet 18 into the first shaft 10 and the outlet 20 from the second shaft 12 are arranged essentially at the same height, whereby the outlet 20 - for example based on the length of the pipe 14 - can be arranged 0.025% lower than the inlet 18.

Before the system is put into operation, the pipe 14 must be filled with water. This can be achieved by completely filling the pipe with water under pressure - for example, if there is a corresponding coupling in one of the shafts 10, 12 using a fire engine. A water level then forms in the two shafts - following the principle of communicating pipes - which is essentially the same height. The water level in the shaft 12 is determined by the outlet 20, which leads to the receiving water 16. This water level will always also form in the shaft 10.

When using the system shown, the pipe 14 that connects the two shafts can be laid according to the terrain, in lower areas as well as in higher areas to protect against frost or mechanical impacts about 1 m below the ground. Maintaining a constant gradient is not necessary, since the water flowing from the shaft 12 via the outlet 2 0 over the receiving water 16 always exerts a suction effect on the pipe 14 and sucks in the water from the shaft 10. It has been shown that an average gradient of the pipe 14 of 0.025% is sufficient.

BOEHMERT & BOEHMERT, NCfRDEMAtffr and PARTNERS

The drawing shows that it is permissible for the pipe 14 to even rise in some areas; the effect of conveying the water from the shaft 10 into the shaft 12 and then into the receiving water 16 is not affected in any way by this.

In the embodiment shown in the figure, a further shaft 18 is provided, which can be used to fill the system. Such a filling shaft 18 is useful when the pipe 14 has to be led through a hill, so that filling the system by filling one of the shafts 10, 12 with water is not sufficient. However, it can also be sufficient to provide ventilation at the highest point of the pipe 14.

The arrangement of the inlet and outlet of the pipe 14 in the shafts 10 and 12 respectively, considerably below the normal water level, ensures that the system does not dry out. Should this nevertheless happen, the system can simply be refilled with water and will then function again without any problems.

The installation of the gas-tight pipe proposed here is less complex than the previously usual use of relatively large-volume concrete pipes, especially since a constant height above the surface of the field can be maintained along the entire route.

Due to the very low average gradient with which the pipe 14 is to be laid, it is possible to achieve drainage almost to the level of the water level of the receiving water 16 (in the known systems, a

BOEHMERT & B0EHMERT, NORUEMAI^ And PARTNERS

a much greater gradient must be maintained, so that a considerable height is lost for drainage).

&bull; *

Claims (4)

Cl"% BOEHMERT & BOgJ&lE^f, kcfc©3MAio*.v>jf> PARTNER L5062 CLAIMS 1. Drainage system for draining in particular arable land, with at least one shaft and a plurality of pipes, of which at least one flows into a receiving water body, marked by a first shaft (10) in the area of a depression to be drained, a second shaft (12) in the area of the receiving water into which the drainage is to be carried out, and a pipe (14) connecting the two shafts (10, 12) with each other, where the two shafts (10, 12) are arranged at essentially the same height, the pipe (14) connecting the two shafts is gas-tight, BOEHMERT & BOEJIMEKT, the inlet of the pipe (14) connecting the two shafts is arranged below the inlet into the first shaft (10) and the outlet of the pipe (14) connecting the two shafts is arranged below the outlet from the second shaft (12), and the inlet into the first shaft (10) and the outlet from the second shaft (12) are arranged essentially at the same height. 2. Drainage system according to claim 1, characterized by a vent valve arranged in the region of a highest point of the course of the pipe (14) connecting the two shafts (10, 12) to one another, 3. Drainage system according to claim 1 or 2, characterized in that the inlet of the pipe (14) connecting the shafts (10, 12) to one another is arranged at a distance from the brine of the first shaft (10). 4. Drainage system according to one of the preceding claims, characterized by a filling shaft (22) arranged in the region of a highest point of the course of the pipe (14) connecting the two shafts (10, 12) to one another.