DE7526236U - DRAIN PIPE - Google Patents

Description

The innovation concerns a drain pipe "consisting of one Longitudinally corrugated plastic tube with a cover.

For the drainage of waterlogged soils, it is known " Laying plastic pipes as drainage lines, whereby the Plastic pipes made of polyvinyl chloride and corrugated in the longitudinal direction or also spirally corrugated according to the German utility model 1 875 093 are made. The corrugated plastic pipes have in their Wave troughs are small slits through which the water seeps from the ground into the pipes and is drained away can.

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It has, however, shown that these plastic pipes tend slightly to siltation when the slots are wide in the troughs to ". On the other hand, the slots should not be too -schmal, otherwise insufficient water delivery forward more ·. Handen is A study by Binsack in: ^u DJas Kunststoffrohr 1961/7 "shows that the silting depends on the width of the slot, a slot width of 0.4 mm having proven to be advantageous. Fine sand can still penetrate through this slot width, but such a fine grain of sand is easily washed out of the drain pipe. On the other hand, a slot width of 0 results _; 4 mm with the commercially available pipes only a slot area of 5 "to 5.7 cm / m. However, a * water dispensing of at least 10.0 cm / m is desirable, with a slot area above 15 cm / m not showing any notable increase in water dispensing delivers more. ''

In order to prevent the silting up of drainage pipes one has therefore surround the well-known corrugated drain pipe with a filter jacket made of coconut fibers and possibly additional synthetic fibers. This pilter jacket allows a large slot width and consequently a large amount of water while preventing silting The drainage pipes, however, is a problem with this sheathing this is very thick and, since it consists of coconut fibers, accordingly expensive. Due to its thickness, the rolled up plastic pipe takes up a lot of space during transport; when laying must be very careful care must be taken to protect the coconut coating from damage »

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Another disadvantage is that coconut fibers not rot-proof, especially in acidic and consequently aggressive soils are.

The innovation is therefore based on the task of creating a drain pipe of the To create the type mentioned at the outset, the casing of which is rot-proof in the ground, the casing itself having the diameter of the Rohres can only grow insignificantly. Furthermore, the covering should reliably prevent any silting up and still enable a large slot width with large water dispensing of the drain pipe

The solution to the problem is that according to the innovation, the envelope is a thin, water-permeable, rot-proof fleece that tightly encloses the drain pipe. Preferably that exists Polypropylene fleece. Advantageously, the fleece only wraps around the drain pipe in one direction.

The salient advantage of the innovation according to the drain pipe is in that the thin fleece completely prevents silting up of the pipe, but ensures a large seepage surface. Another advantage is that the Piltervlles rests on the raised corrugated mountains and the lower lying, spanned slotted wave troughs. This allows the water to flow all over the cylindrical ring into the cavity between Drain pipe and 3? Lltervlles soak in and then through the slits

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to enter the interior of the pipe. With the coconut fiber wrapped known drain pipes, the Pasern can penetrate into the wave troughs and thus the collecting surface for the water between Reduce the size of the drainage pipe and xilter cover.

Another advantage of the drain pipe according to the innovation is that that the application of the fleece hose to the corrugated drain pipe can be integrated into the manufacturing process of the same can, because the hose made of z. B, polypropylene fleece strips corresponding Width by welding together at the overlap using "ultrasound or by gluing directly after extrusion, Corrugating and punching the drain pipe can be obtained. A Another advantage is that now the slot width can be kept optimal, so that a maximum water dispensing of the Drain pipe is reached.

In addition, the thickness of the fleece needs to be at most one or a few mm, so that the overall diameter of the drain pipe is increased only insignificantly and therefore no during transport larger space is required.

Another advantage is that the polypropylene fleece is not rot.

An example of ^ inflation is shown in the drawing and subsequently described. It shows:

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Figure 1 shows a longitudinal section through a drain pipe and

Figure 2 shows a cross section through Figure 1 through a trough of the Pipe.

The drain pipe "consists of a longitudinally corrugated plastic pipe, made of impact-resistant and flexible polyvinyl chloride. \ Es

are of course also other materials, -: ρ

suitable for the production of drain pipes according to the present innovation. The drain pipe "has wave crests 2 and wave troughs 3, wherein in the wave troughs 3 slots 4 for penetration of the Water is located in the interior of the plastic st off pipe it ". The entire Tube is covered with a hose-Ylies 5, where there? hose the pipe is only covered in one layer. The slots 4 are usually a few mm long and donate according to the desired water "up to one mm "wide. The art of tube can also be drawn in a spiral shape be, the slots always arranged in the wave troughs are.

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Claims (5)

S_c_h_u_t_z_a_n_s ^ jo_r_ü c h_e 1. Drain pipe, "consisting of a longitudinally corrugated Plastic pipe with a cover, characterized in that the cover (5) is made of a -water-permeable, non- rotfbarem fleece "consists of the drain pipe tightly fitting i enveloped like a hose. 2. Drain pipe according to claim 1, characterized in that the fleece is made of polypropylene ". 3. Drain pipe according to one of the preceding claims, characterized in that that the fleece envelops the drain pipe in one layer. 4. Drain pipe according to one of the preceding claims, characterized in that that the fleece is a tube. 5. Drain pipe according to one of the preceding claims, characterized in that that it is by welding and / or gluing is integrally connected to the fleece * 7526236 oz. 01.76