DE1924206U - PLASTIC PIPE CONNECTION. - Google Patents

Description

Lawyer file no. 13 170

Kunststoffwerk Gebrüder Anger GmbH & Qo. Munich, Munich, Einsteinstr. 1ue4.

"Plastic pipe connection"

The invention relates to a plastic pipe connection, in particular a connection for pipes made of thermo «» plastic plastic, such as preferably polyvinyl chloride, in which one end of one tube is expanded into one Sleeve is inserted at the end of the other pipe and the sleeve at a distance from its free end to receive one of a sealing ring having certain annular groove, wherein

the inner diameter of the socket in the area between the Ring groove and the connection to the pipe the maximum permissible pipe outer diameter Exceeds only by a / a / slight / a perfect bond in this area permissible amount.

In the field of plastic pipe connections essentially two | -3? ypen proven, never a type is of of the type outlined above. With it, the gap between the sleeve and the inserted tubular end is relatively large. It is secured by the sealing ring in the ring groove (bead), which mostly consists of rubber, bridged with a seal. This construction accordingly allows relatively large angles when laying the pipe string. Also, due to the general use of lubricants, only small forces are required to push the pipe end into the socket necessary. Such a pipe connection has the advantage that it also retains the thermally induced joints after the installation Can accommodate changes in length in the pipeline. she has the disadvantage that it is not essential. Absorbs axial forces, i.e. under certain circumstances such Connection under the influence of hydrostatic or hydro « dynamic forces arise.

The other type of connection has a socket without an annular groove and the "gap" between socket and pipe is narrow. the Sealing is effected here by gluing, the gap being essentially filled with the adhesive.

Such a construction is because of the handling of the Glue is less easy to assemble. The small amount of play also makes it more difficult to insert the end of the head. In some types of use, however, the property is this connection that the two pipe ends are firmly connected and not pulled apart can, of advantage, ..

Finally, it is also known to provide the latter type with a king groove, and thus optionally also a detachable one To be able to establish connection with sealing ring. However, this construction also has the disadvantage with the fact that when an adhesive connection is made, the adhesive is stripped off both on the socket edge and on the groove, which is often the case in the rough on-site operation leads to inadequate bonding.

The invention solves this problem in that the socket inside diameter in the area between the groove and the free socket end exceeds the pipe outside diameter by such a barrel that when the inserted pipe end is angled, it no longer calibrates the socket in this area. touched. '- ^:

The! Difference between the inner socket diameter x u | id dein Outer pipe diameter in which a bond e.g. with a strongly dissolving adhesive, like on the Baals Tetra *

Hydrofuran permissible area, "is appropriately, as is known, about 1.5 mm. This design makes it possible to push an adhesive-coated pipe end into the socket without the adhesive in an undesirably large amount in the area between free sockets "The end and the ring groove are stripped off. This ensures perfect gluing in the area behind the ring groove. No sealing ring is provided in the groove when gluing. The extended area in front of the actual gluing area also facilitates the insertion of the pipe end. Another essential The advantage of such a construction is that even when the pipe connection is stressed by tilting. "· Be it with an adhesive connection or with a simple sealing ring connection," the most sensitive free edge of the socket is not stressed, as the insert pipe is only now at the edge between the ring groove and the socket wall on the latter This area can absorb forces much more cheaply than a free pipe end. Finally, the production of a simple plug connection with a sealing ring is just as easy as with the previously known connections of this type.

The execution is particularly favorable if the ring groove is given an approximately rectangular profile, as this results in it the sealing ring particularly good evasion and ver ~., receives shaping options.

in the following, the "preferred" is given with reference to the accompanying drawing Embodiment of the invention described.

Fig. 1 shows half of a tube connection in axial section according to the invention when used as an adhesive connection.

Fig. 2 shows in the same representation the same pipe connection as a detachable plug connection with sealing ring,

In both cases, the socket 1 of the socket pipe 2 has a Ring groove 3> which is intended to receive a sealing ring 4. The end of the inserted ear 5 is at 6 beveled. '-, ■ "." - "._::: - \"

If an adhesive connection is to be made as described in Fig. 1 is shown, either the end of the pipe 5 is outside or the inside of the sleeve is behind the The bead is coated with one of the known and customary adhesives and placed in the position shown in FIG pushed into socket 1. Per ^ adhesive 7 is in the ring « gap indicated in black. You can see that here, too, there is a relatively cheap possibility of bending the ¥ given is. -. ■■■ ".." ■ -;. /

To produce the connection shown in FIG only the sealing ring is inserted into the bead and the pipe end to be inserted ... is marked on the outside with a & 1βΐΐΐη1ΐίβ1 ~ ΐβ ^ deleted and inserted in the usual and known way,

where "where required for a thermally induced expansion borrowed space "is to be observed." "_," -. "." "■■■ -

The cylinder lying to the right of the groove in the drawing see socket area advantageously has a length which is approx 50 "to 100 percent of the pipe diameter B" while the cylindrical socket area to the left of the ring groove, which has an increased inner diameter, advantageously a length ", .- which is approximately in the order of magnitude of is at least 5 "to 10 percent of the tube diameter.

Claims (2)

Protection claims: 1. Plastic pipe connection in which one end of the one pipe into an enlarged socket at the end of the other Tube is inserted and the sleeve at a distance from its free end one for receiving a sealing ring having certain annular groove, the inner diameter the socket in the area between the ring groove and the At the end of the pipe, the maximum permissible pipe outside diameter only by a small amount that allows perfect bonding in this area marked that the socket inside diameter in the area between the ring groove and the free socket end is the outside of the pipe «· diameter by such an amount that the When the inserted pipe end is bent, it no longer touches the socket in this area, 2. Plastic pipe connection according to claim T, characterized in that that the ring groove has an approximately rectangular profile.