WO1981001580A1

WO1981001580A1 - An arrangement relating to a drainage pipe

Info

Publication number: WO1981001580A1
Application number: PCT/NO1980/000040
Authority: WO
Inventors: J Bergsland
Original assignee: Individual
Current assignee: Individual
Priority date: 1979-11-28
Filing date: 1980-11-28
Publication date: 1981-06-11
Anticipated expiration: 1982-05-28
Also published as: FI812327L; EP0040621A1; FI71807B; GB2076927A; EP0040621B1; GB2076927B; DE3069236D1; FI71807C; DK151108B; NL8020436A; DK335981A; DK151108C

Abstract

An arrangement related to a drainage pipe (2) provided with inlet holes (3) for water, said holes (3) being positioned on the upper half of the drainage pipe (2) and the drainage pipe being fully or partly covered by a jacket or exterior plate (12). The lower edge or edges of the jacket lies or lie substantially on the same level as the lower edge portion of the drainage pipe. The jacket may possibly be smooth, whereas the drainage pipe (2) is corrugated. The water will then rise in the space between the jacket and the pipe, which space serves for deposition of possible particles, and thereafter will enter into the pipe through the holes. The arrangement may be used for simplified disposition of drainage without particular necessity for draining masses above the arrangement.

Description

An Arrangement Relating to a Drainage Pipe.

The present invention relates to an arrangement of a drainage pipe provided with inlet holes for water.

It is common among drainage pipes that the inlet holes for water may be clogged, and the present invention has as an object by simple means to remedy this disadvantage.

According to the invention the holes are positioned on the upper half of the drainage pipe, the drainage pipe being fully or partly covered by a jacket or exterior plate.

Further characteristic features will appear from the attached claims and the following description with reference to the accompaning drawings.

Figure 1 shows a first embodiment of the arrangements accor¬ ding to the-.invention.

Figure 2 shows a second embodiment of the arrangement accor- ding to the invention.

Figure 3 shows a third embodiment of the arrangement accor¬ ding to the invention.

Figure shows a fourth embodiment of the arrangement accord ding to the invention.

Figure 5 shows a modification of the embodiment in figure 4.

Figure 6 shows a further modification of the embodiment in figure 4.

Figure 7 shows a modification of the embodiment in figure 5.

Figure 8 shows a modificat_ion of the embodiment in figure 3.

Figure 9 is a perspective view of an exterior plate intended for use with the arrangement as illustrated in figures 6 and 7

OMPI Figure 10 shows an exterior plate according, to the invention for use with the arrangement as shown in figure 3.

Figure 11 shows a fifth embodiment of the arrangement accor- ding to the invention.

Figure 12 is a modified embodiment of the arrangement accor¬ ding to figure 11.

In figure 1 there is shown a drainage pipe 2 which in the .^" figure is corrugated and provided with an array of inlet holes 3. The drainage pipe is covered by an exterior plate

1 extending from base level over the top of the drainage pipe and partly down on the opposite side of the drainage pipe. Between the drainage pipe and the exterior plate there is in the longitudinal direction at the top arranged .a sealing between the drainage pipe and the plate. There is thus formed an inlet section for the water and an outlet section for the water consisting of the interior of the pipe 2. In figure 2 there is shown a drainage pipe 2 with an array of inlet holes 3, where the drainage pipe is com¬ pletely covered by an exterior plate 5 placed on base level. It will thereby immediately be seen that there is formed two inlet sections and one outlet section consistingr.of the in- terior of the pipe 2. In the example of figure 2 the pipe

2 is corrugated.

Figure 3 shows an exterior plate 6 having supporting ribs 6", said supporting ribs being adapted in shape to the drainage pipe and facing said pipe. There is thus in this case formed two inlet sections, i.e. between the plate 6 and the drainage pipe on both sides of the drainage pipe.

In similar manner there is in figures 4 and 5 arranged an exterior plate 7 with protruding legs 8 and in figure 5 there is in addition arranged a filtering mat 9 on which both the exterior plate and the drainage pipe are placed. In the embodiments shown in figures 1 to 5, the drainage pipe is illustrated to be corrugated, whereas the exterior plate

OMPI ^, WPO _ has a smooth surface. However, the drainage pipe may as well have a smooth_ surface and the exterior plate have a corrugated form, such as indicated in the embodiments of figures 6 and 7. In figure 6 there is shown a drainage pipe 11 with a corrugated exterior plate 10. In the embodiment of figure 7, the unit of figure 6 is placed on a filtering mat 9. The .filtering mat 9 has as its object to ensure effective filtering άf the incoming water.

In figure 8, the exterior plate 12 is snapped over the drainage pipe 2. In the illustrated form, the exterior plate is smooth and the pipe is corrugated, but this could of course be vice versa, or both elements being corrugated with different .degree of corrugation.

In figures 9 and 10 there is shown as an example the exterior plates used in the embodiments of figures 6 and 7 and figure

3, respectively.

The holes may be made substantially bigger than for common drainage pipes. Because the water to be drained rises slowly upwards before it reaches the holes, sand, soil, particles etc. will be deposited and not enter into the drainage pipe. Another considerable advantage of the system consists in that the earth masses may be put back into the ditch over the drainage pipes after they with their covering plates.or the like have been placed on common filtering bed, sand, gravel, sawdust or other material.

In figures 11 and 12 there is indicated by arrows how the drainage water flows into an inlet section of the arrange¬ ment and down into a central outlet section of the arrange¬ ment.

The arrangement according to figures 11 and 12 consists of two parts, where the first 'part is made from an internal pipe 13 with the said inlet openings 16 placed in the upper half of the pipe. This pipe 13 thus forms the outlet section of the arrangement. The other portion consist of a pipe or a jafcket 14 surrounding the first part and having said openings in the lower half of the pipe or jacket. As will appear from figures 11 and 12, there may e.g. be one array of inlet ope¬ nings 17 or two arrays of inlet openings in the lower half of the jacket, respectively. Alternatively said one array of openings may have the form of a slit arranged in the longitudinal direction Of the jacket, such as in principle for the embodiment of figure 8.

As shown in figures 11 and 12 the inner pipe 13 has a smooth surface, whereas the."outer.pipe or jacket 14 has a corrugated surface, the outer limits of the corrugations being indicated by the reference numeral-15. -Conversely the first part 13 may have corrugated surface and the second part 14 have smoothed surface.

If there is used a jacket provided with said slit, the jacket may possibly be snapped over the inner tube 13, such as in¬ dicated as an example in figure 8. Alternatively the first part may of course be pushed into the second part.

Claims

C 1 a i . m s

1. An arrangement of a drainage pipe provided with inlet holes for water, characterized in that the holes (3; 16) are placed on the upper half of the drainage pipe (2; 11,: 13), and that the drainage pipe.'is fully or partly ^• covered by a jacket or exterior plate (1; 5; 6; 7; 10; 12; 14).

2. An arrangement according to claim 1, characterized in that the lower edge or edges of said jacket or exterior plate (1; 5; 6; 7; 10; 12), is or are placed on same level as the lower edge portion of the drainage pipe.

3. An arrangement according to claim 1 or 2, characterized in that the jacket is place loosely over the drainage pipe.

4. An arrangement according to claim 1 og 2, characterized in that -the jacket is fixed to the drainage pipe by welding, adhesion or the like.

5. An arrangement according to claim 1 or 2, characterized in that the jacket is fixed to the drainage pipe by snap- action.

6. An arrangement according to claim 1 or 2, characterized in that the drainage pipe has corrugated surface and that the jacket has smooth surface.

7. An arrangement according to claim 1 or 2, characterized in that the drainage pipe has smooth surface and the jacket has corrugated surface.

8. An arrangement according to claim 1 or 2, characterized in that both the drainage pipe and the jacket are corrugated, having different degree of corrugation.

9. An arrangement according to claim 3, characterized in that the jacket (6) is provided with mutually spaced suppor ting ribs (6')_/ which are adapted in :form to and facing the drainage pipe.

10. An arrangement according to claim 3 or 4, characterized in that the 'jacket in cross-section has substantially inver¬ ted U- or V form.

11. An arrangement according to claim 1 or 2 with the exte¬ rior plate partly covering the drainage pipe, characterized in that a sealing (4) ±t. arranged between the drainage pipe and the exterior plate at the upper portion of the drainage pipe.

12. An arrangement according to claim 1 or 2, characterized in that the drainage pipe and the exterior plate are suppor¬ ted on a filtering mat (9).

13. An arrangement according to claim 1 or 2, characterized in that the holes in the drainage pipe are substantially bigger than inlet holes known per se.

14. An arrangement according to claim 1, characterized in that the jacket (14) is tubular and encompasses the drainage pipe (13) , said jacket having said inlet openings (17) in its lower half.

15. An arrangement according to claim 14, characterized in that':the inner part has smooth surface^" and the outer part has corrugated surface.

16. An arrangement according to claim 14, characterized in that the inner part in a manner known per^'se has corrugated surface and that the outer part in a manner known per se has smooth surface.

17. An arrangement^"^according to claim 14, characterized in that .said jacket has said inlet openings in the form of a slit arranged in the longitudinal direction of the jacket.