FI85740B - Combined drainage and rainwater pipe - Google Patents

Description

! 85740

This invention relates to a combined drainage and rainwater pipe having a completely circular cross-section and provided with a two-layer wall, the outer layer being corrugated and provided with a narrow longitudinal installation completely closed at the bottom and equipped with holes in the corrugations at the top.

Drainage prevents moving, harmful surface water, groundwater and groundwater absorbed into the building, as well as the conduction of moisture and the rise of capillary water in the structures. Effective drainage relieves frost, thus avoiding damage to the foundation and the structures placed in the foundation.

20 The use of a combined drainage and rainwater pipe of the above-mentioned type avoids the two parallel previously commonly used in construction sites. . a pipe system. Pipes with evenly distributed water intake slots or 25 holes were used throughout the drainage, and completely closed walls were used to drain the rainwater.

Finnish design protection application 385/88 discloses a combined drainage and rainwater pipe with a corrugated, * 30 flow-disturbing inner layer and a surrounding flat, water-permeable, porous or fibrous outer shell on the surface of which an installation line is attached. Due to the corrugated inner surface, sand and other contaminants easily accumulate inside the drainage pipe, which over time causes the drainage of the drainage pipe 35. In addition, the manufacture of this previously known drain pipe is very cumbersome and time-consuming, since the outer shell has to be placed on the prefabricated inner shell 2 85740 and the mounting line can only be attached to the surface of the pre-assembled drain pipe. Due to the nature of the outer shell, the attachment of the mounting line to it is also relatively uncertain.

5

The object of the present invention is to eliminate these drawbacks and to provide a durable and reliable pipe which, in addition, is easy to install and which fits the fittings of a conventional drain pipe. This object is achieved by a pipe, characterized in that the installation line outside the wall of the pipe is formed by extrusion from the material flow of the inner layer.

Other features of the invention appear from the appended claims 2 and 3.

The invention will now be described in more detail with reference to the accompanying drawing, in which FIG. 1 shows an example of a combined drain and rainwater pipe according to the invention in a perspective view,. . Fig. 2 schematic views of the end of the pipe according to Fig. 1 filled with rainwater and 25 fig. 3 schematic diagrams of the drainage operation of the pipe according to Fig. 2.

The combined drainage and rainwater pipe 1 1 30 according to the invention has a completely circular cross-section and is provided with a two-layer wall, the outer layer 2 of which is corrugated and the inner layer 3 is smooth. The wall of the pipe 1 is completely closed at the bottom and provided with holes 4 in the corrugations above. To ensure the correct installation of the pipes 35, the upwardly extending outer layer 2 of each pipe 1 has a longitudinal installation line 5. The pipe 1 is preferably 85740 3. is preferably made of hard polyethylene.

According to a preferred embodiment, the holes 4 in the wall 5 of the pipe 1 are arranged in three longitudinal rows, which rows are in the wall of the pipe at positions 10, 12 and 14. This structure ensures that the drainage part 6 above the pipe has sufficient water absorption capacity. 10 of the area forms a water-conducting rainwater section 7. The interface between the drainage section 6 and the rainwater section 7 is shown in Figures 2 and 3 in broken lines.

The pipe 1 according to the invention acts as an effective foundation sa-15 expander and removes roof and surface water from the site in a controlled and fast manner. The piping system made of these pipes 1 is self-cleaning because the fast-flowing rainwater effectively flushes the inner surface 3 of the piping soul. In addition, the pipe is effortless to install and is reliable 20 all year round.

Figure 3 shows a finished pipe 1 according to the invention. . si mounted in a trench 8 and surrounded by a drain gravel 9.

The assembly line S is preferably obtained in connection with extrusion by directing, for example, a part of the material flow of the inner layer 3 in a narrow line to a desired location on the outer layer 2.

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Claims (3)

85740 1. A combination of drives and accessories (1), which can be connected to a circular form and a double guide, and a double guide (2) and a multiplier and a double guide (5) slät, och rörets vägg är pä sin 1 30 bottensida helt sluten och pä sin ovansida försedd med i vägdalarna belägna häl (4), kännetecknat därav, att monteringslinjen (5) pä utsidan av rörets (1) vägg är utformad av innerskiktets (3) extruded material strands. A combined drainage and rainwater pipe (1) with a completely circular cross-section and provided with 5 double-layer walls, the outer layer (2) being corrugated and provided with a narrow longitudinal installation line (5) and the inner layer (3) being smooth from the bottom closed and provided with holes (4) in the corrugations at the top, characterized in that the installation line (5) outside the wall of the pipe (1) is formed by extrusion from the material flow of the inner layer (3). 2. Combined drives and accessories (1) according to claim 1, having the following inserts, with the following (4): - 8: 35 8S740 (1) is designed to be mounted on a three-way radiator, with a pin in position. 10, 12 and 14. Folded drainage and rainwater pipe (1) according to Claim 1, characterized in that the holes (4) in the wall of the pipe (1) are arranged in three longitudinal rows at positions at. 10, 12 and 14. Combined drainage and rainwater pipe (1) according to Claim 2, characterized in that the pipe (1) is made of hard polyethylene. 3. Combine the drive and octagers (1), turn-on 5 steps, with the handle (1) being averaged.