DE4219528A1 - Elastomeric seal for sleeved pipe connection - has seal of independent profile accommodating differences in pipe diameters - Google Patents

Abstract

The elastomeric seal is for a sleeved pipe connection between two pipes or a pipe and a component, esp. of two different materials. It has a form providing a seal independent of the pipe. The difference in diameter (3) between the two pipes, or pipe and component (12), is equalised via the seal (1), that the pipe connection has a base level (14) and the diameter difference is taken up at the top of the pipe. Thus, the wall thickness (4) differs between the top (2) and base (5) of the connection. USE/ADVANTAGE - Elastomeric seal accommodates pipe connections of differing diameters such that flow is not hindered.

Description

The invention relates to an elastomeric transition pass ring for sealing a socket pipe connection between Pipes with each other or pipes and prefabricated components (Manholes, cleaning pipes, etc.), in particular re made of different materials (such as Stoneware, concrete, plastic, cast iron, fiber cement, etc.) are made, the transition fitting ring independently gig shaped from the tube to an independent seal and in the one between the spigot end of one pipe and the sleeve or the seal subsequently installed in the sleeve element of the other pipe or prefabricated component Lichen socket gap is arranged.

Elastomeric sealing body in the manner of independently shaped rings are u. a. also to the tight connection used by pipes made of different dimensions material (stoneware, concrete, plastic, cast iron, fiber cement, synthetic resin or similar). So much for these pipes - usually resulted from different standards ne - have differences in their inner diameters, who which these diameter differences by means of the known, tangentially evenly shaped fitting rings by centri The two pipes are joined together at the pipe joint Distributed radially in half around the circumference of the pipe (see DE-PS 851 287; DE-OS 38 15 654.7). Which is thereby there is also a step formation on the pipe base to that it - especially with drainage channels with ge gentle slope - to drainage obstructions in the Rohrlei tion comes with the consequence of the emergence of undesirable  Deposits, digestion processes, gases and the formation of corrosive attack on the pipe walls and seals Fabrics.

The invention has for its object a fitting ring to create, which is also used to seal the socketver Binding of pipes suitable, in particular from ver different material exist, without that in such Pipes occurring differences in their inner diameter lead to drainage obstructions in the pipeline.

This object is achieved in that that between two pipes or a pipe and a fer tigcomponent existing and usually by difference standard values for the inside diameter of various pipes Diameter of pipe or prefabricated component types difference from the independently formed transition fitting ring is compensated in such a way that the pipe Connection from pipe to pipe or from prefabricated component to Pipe (or vice versa) a continuous sole (= Soh equality) and the diameter difference is laid in the top of the pipe, which is why not attached to a spigot or a sleeve Transition fitting ring a separate radial wall thickness has such that the undeformed radial Wall thickness of the transition fitting ring in the later soles area and in the later crown area the socket pipe connection corresponding to the one in the realization the different soles to be expected Socket gap widths of different thicknesses and on both sides ten is at least approximately the same size. Know a pipe or prefabricated component, the tip end of which must be assembled ren, has a radial inner diameter that is small ner than that of the pipe possessing the sleeve or finished component, the wall thickness in the future Sole area of the transition fitting ring to achieve the The sole is dimensioned accordingly smaller (thinner) than in the future crown area. With each other too  connecting pipes and prefabricated components with a vice returned radial inner diameter relation is the wall thickness of the transition fitting ring in the sole and crest vice versa. It is important to ensure that the wall thickness of the assembly of the spigot end Sealing section of the transition fitting ring as a percentage all around a minimum value (for example 20%) that for secure sealing of the socket pipe connection is required, not less. Because the radial Inside diameter of the different pipe types in the right gel standardized and their inner diameter differences there are known in advance, it is not difficult for the transition pass to be used rings in their sole and crown area un Different correct radial wall thicknesses in advance to determine and for the manufacture of these rings he production tools (e.g. Vulka forms).

Shows how such diameter differences arise The table below using the example of PVC sewer pipes (DIN 19 534) and concrete shafts (DIN 4034):

When connecting cast iron pipes, of which there are several Types exist (SML, with and without cement mortar lining), with concrete shafts, with PVC, stoneware or concrete pipes  arise z. T. other internal differences diameter between the different pipe types or Prefabricated components, which are, however, by comparing the have the relevant standards easily identified in advance. The same applies to the combination of other tube types or prefabricated components.

To ensure that the transition fitting ring is with different radial wall thicknesses at the tip end or in the sleeve in the correct position and thus functional is assembled, is after an advantageous development extension of the invention provided that the unmon marked transition fitting ring, for example a vertex that carries the correct installation location of the transition fitting ring in the later socket pipe connection is called.

In the case of pipe types made of different materials or Prefabricated parts that are relatively rare as part of a pipe line can be connected to each other an advantageous embodiment of the invention, the Be creation of relatively expensive forms of vulcanization the use of identical wall thicknesses all around as standard Save fit rings by the fact that the different radial wall thickness of the transition fitting ring by an am provided thicker part of its wall thickness Overlay or insert and / or on the intended weaker Remove part of its wall thickness by (for example by grind) is produced.

Based on the execution shown in the drawing examples, the invention is explained in more detail. Show it

Fig. 1 is a transition mating ring in an axial view,

Fig. 2 shows the same transition fitting ring in the vertical axial cross section and

Fig. 3 shows a transition fitting ring in its final assembly position in a socket pipe connection in a vertical axial cross section.

In Fig. 1, the transition fitting ring 1 has at its future apex area 2 (in the drawing above) a wall thickness 4 greater than the expected difference 3 of the inside diameter of the pipes to be connected than at its future sole area 5 . A transition fitting ring 1 dimensioned in this way is intended for sealing a socket pipe connection in which the pointed end has a correspondingly smaller inside diameter than the pipe or prefabricated component on which the socket is located. The apex area 2 of the transition fitting ring 1 is marked for its correct pre-assembly with a, for example made of white color, Schei telpunkt 6 .

The in Fig. 2 in the vertical axial cross-section Darge presented transition fitting 1 from Fig. 1 consists of the sealing section 7 coming during assembly of the tip end for sealing compression and section 8 from the pre-centering. At the front beginning of the Vorzentrierabschnit tes 8 , a radially inward holding flange 9 is attached, which is provided with a reinforcement in the form of a steel insert 10 to prevent its radial expansion upon assembly of the pointed end.

The sleeve pipe connection shown in Fig. 3 is composed of the following parts: From the sleeve 11 of a concrete shaft as a finished component 12 , from the pointed end 13 of a PVC sewer pipe and from the transition pass ring 1st The tip end 13 has a radial inner diameter that is smaller by the difference 3 than the finished component 12 . Due to the different wall thickness 4 , which the prefabricated transition fitting ring 1 has at its sole area 5 and at its apex area 2 , the sole equilibrium desired for hydraulic reasons results on the sole 14 of the socket pipe connection 15 . The difference 3 of the two radial inner diameters is compensated for in the apex region 2 which is harmless to the hydraulic system of the pipeline.

Reference list

1 transition fitting ring
2 crown area
3 difference in inner diameter
4 Wall thickness of the transition fitting ring
5 sole area
6 vertex
7 sealing section
8 pre-centering section
9 retaining flange
10 steel insert
11 sleeve
12 prefabricated component
13 spikes
14 sole
15 Sole equality

Claims (3)

1. Elastomeric transition fitting ring for sealing a socket pipe connection between pipes with one another or pipes and finished components (manholes, cleaning pipes, etc.), which are made in particular from different materials (such as stoneware, concrete, plastic, cast iron, fiber cement or the like) .) Are produced, the transition fitting ring is formed independently of the tube to form an independent seal and in which the gap between the spigot end of one tube and the sleeve or the sealing element of the other tube or prefabricated component located in the sleeve is arranged, thereby characterized in that the existing between two pipes or a pipe and a prefabricated component ( 12 ) and usually by different standard values of the pipe inside diameter of different pipe or prefabricated component types diameter difference ( 3 ) from the independently formed transition fitting ring ( 1 ) in the way is balanced, d ate the pipe connection from pipe to pipe or from prefabricated component ( 12 ) to pipe (or vice versa) has a continuous sole ( 14 ) (= sole equilibrium 15) and the diameter difference ( 3 ) is moved to the top of the pipe, which is not already the case on a spigot end ( 13 ) or a sleeve ( 11 ) mounted transition fitting ring ( 1 ) has a different radial wall thickness ( 4 ) in such a way that the undeformed radial wall thickness ( 4 ) of the transition fitting ring ( 1 ) in the later sole area ( 5 ) and in the later apex area ( 2 ) of the socket pipe connection, according to the different socket gap widths to be expected there when the sole ( 15 ) is realized, is of different thicknesses and is at least approximately equally dimensioned on both sides. 2. Elastomeric transition fitting ring for sealing a socket pipe connection according to claim 1, characterized in that the unmounted te transition fitting ring ( 1 ) carries a mark, for example an apex ( 6 ), with which the correct installation position of the transition fitting ring ( 1 ) is designated in the later socket pipe connection. 3. elastomeric transition fitting ring for sealing a socket pipe connection according to claim 1 and / or 2, characterized in that the under different radial wall thickness ( 4 ) of the transition Paßrin ges ( 1 ) by a provided thicker part of its ner wall thickness ( 4th ) arranged support or insert and / or on the intended weaker part of its wall thickness ( 4 ) by removing (for example by grinding) Herge is.