DE6907610U - PLASTIC PIPE FOR DRAINAGE - Google Patents

Description

Leverkusen, February 14th, 1969 ki-so.

Utility model registration

g for sewer pipes

For the transport of waste water, tubes with bell-like socket widenings at one end are often used, the sealing connection of which is made using so-called "rolling rings". Such pipes can for example consist of stoneware, concrete or asbestos cement. The rolling rings made of elastomeric material, preferably of cellular structure, which serve as a seal, are pulled onto the spigot end of the tubes during assembly, which is then inserted into the bell. During the "rolling-in process ¹¹ ", the rolling rings are pressed so that their high elasticity and the resulting resilience produce a sealing effect.

In the last two decades, components made of plastic An introduction to the technology found in a steadily growing scope. This fact is also evident in the increasing Use of pipes made of plastic for the conveyance of drinking water from the extraction locations to the individual consumption sites.

For some time now, plastic pipes have also been used in the field of sewage transport. The connection of the individual pipe joints are made in many cases by welding. This measure leads to a secure seal among each other, so that neither polluted wastewater escape nor groundwater from the ground into the pipelines however, it is quite complex and also difficult because of the pollution occurring on the construction site.

It was therefore obvious to look for a way to use the proven and extremely simple to implement for vitrified clay pipes and economical rolling ring seals also for RoLx s made of plastic. Because of the

Ethylene has the simple tendency to "cold flow" and very economical rolling ring sealing process has hardly found its way into this pipe material, since there is a risk of under the contact pressure of the rolling rings is given possible local deformation, which calls into question the desired sealing effect. The inevitable bulges in the pipes lead to relaxation, i.e. to a decrease in the compression the rolling rings, so that the desired sealing effect is not more can be achieved in full.

The aim and task of the present innovation are to avoid the disadvantages outlined by the pipe walls by inserting or placing support rings, preferably made of metal or plastic that does not tend to flow experience such solidification that previously observed when using compressed rolling ring seals on polyethylene pipes and the tendency of the plastic material to flow which adversely affects the seal is prevented. The inputs or Due to their ring shape *, pads form evenly on the Support frame arranged over the entire circumference of the pipe from the spigot end and bell. Preferably the rings are flat in shape; i.e. they show a rectangular cross-section.

Working examples;

1e) The support rings (3a and 4a) are in the pipe wall of the Spigot end (1a) and the bell-shaped pipe end (2a) fully embedded (drawing 1).

2.) The support rings (3b and 4b) are at the spigot end (1b) in an outer, at the bell-shaped end in an inner, Recess (2b) adapted to their dimensions is embedded (drawing 2).

3.) The support rings (3c and 4c) are in one, outer

(1c) Recess in the pipe wall of the spigot end and bell (2c)

stored (drawing 3)
•one

• such as glass fiber reinforced polyester or epoxy resin O * -J Il / fi j f \

4.) At the spigot end (1d) the support ring (3d) is in an outer one Recess of the wall wall embedded; "at the bell-shaped At the end (2d) is the support ring (4d) - the bell is supported on the outside.

-4-

Claims (5)

Expectations; Λ .) Sealing pipe connection to plastic pipes for sewage transport using Eollringen verzüge made of elastomeric material with cell structure, characterized in that the pointed and the sleeve-like widened drilling end have an annular, preferably flat support made of metal or plastic. 2.) Sealing drilling connection on plastic pipes for the Waste water transport according to claim 1, characterized in that that the support rings in the plastic wall of the pipe ends are embedded. 3.) Sealing pipe connection to plastic st off pipes for the Wastewater transport according to claim 1, characterized in that the support rings are in an outer one that is adapted in size Recess of the spigot and an inner recess of the socket end are embedded in the pipe wall. 4.) Sealing pipe connection on plastic pipes for the Waste water transport according to claim 1, characterized in that the support rings at both pipe ends (spigot end + bell-like Socket) are embedded in external recesses. 5.) Sealing pipe connection on plastic pipes for the Waste water transport according to claim 1, characterized in that the support ring is supported on the outside at the socket end and is embedded in a recess on the outside at the spigot end.