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WO2000028252A1 - Manchon emboitable pour assemblage par liaison de force longitudinale - Google Patents

Manchon emboitable pour assemblage par liaison de force longitudinale Download PDF

Info

Publication number
WO2000028252A1
WO2000028252A1 PCT/EP1999/008493 EP9908493W WO0028252A1 WO 2000028252 A1 WO2000028252 A1 WO 2000028252A1 EP 9908493 W EP9908493 W EP 9908493W WO 0028252 A1 WO0028252 A1 WO 0028252A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
plastic
reinforcing part
bushing
widening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP1999/008493
Other languages
German (de)
English (en)
Inventor
Erich Gruber
Karl Mann
Norbert Freund
Albert Lueghamer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alois Gruber GmbH
Original Assignee
Alois Gruber GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alois Gruber GmbH filed Critical Alois Gruber GmbH
Priority to AU15515/00A priority Critical patent/AU1551500A/en
Publication of WO2000028252A1 publication Critical patent/WO2000028252A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • F16L37/0925—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector with rings which bite into the wall of the pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
    • F16L47/12—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with additional locking means

Definitions

  • the invention relates to a plastic sleeve for connecting plastic pipes of the same or approximately the same diameter for pressurized fluids, such as drinking or waste water, which plastic sleeve is provided with a widening and a sealing and a clamping ring for the pressure-tight and restrained reception of the plastic pipe to be connected, whereby a reduction section is provided between the widening and the plastic pipe on which the sleeve is arranged, and the sleeve is provided with a reinforcing part that absorbs radial compressive forces.
  • Push-in sleeves of the aforementioned type made of plastic for pressure pipelines in water supply or in sewage systems are known. As a rule, they have an expansion into which the next plastic tube is inserted. A sealing ring and a clamping ring are provided there. The sealing ring seals the medium transported in the pipeline from the environment. The clamping ring provides the required restrained force to ensure a reliable connection of the individual plastic pipes of the piping system created with them and to prevent the pipes from sliding apart.
  • the object of the invention is to provide a push-in sleeve of the type mentioned, which enables a reliable restrained connection even of pressure-carrying lines and in which the additional application of a reinforcing part to the sleeve on the construction site can be dispensed with.
  • the reinforcing part is embedded as an integral component in the plastic of the sleeve.
  • the invention paves the way for installing a reinforcement part in the socket already during socket manufacture. This has the manufacturing advantage that a relatively simple, e.g. molded part made of sheet metal can be used. Before the injection molding, this molded part is placed in the injection mold and thus worked into the wall of the plastic sleeve according to the invention. The special application and screwing of the previously required shell halves is then no longer necessary at the construction site. The plastic pipeline can thus be laid quickly.
  • the reinforcement part is rotationally symmetrical and corresponds to the sleeve and extends along the widening and the reducing section of the sleeve. Even with this comparatively simple design of the reinforcement part, the compressive forces acting outwards by inserting the subsequent plastic pipe are reliably absorbed. A possible tearing of the expansion of the sleeve is thus reliably prevented.
  • the reinforcement part it is also possible to provide the reinforcement part with recesses. In the first place, they can be bores that penetrate the entire wall of the reinforcement part. On the one hand, this reduces the weight of the reinforcement part. Due to the plastic of the sleeve wall entering these recesses during injection molding of the sleeve, a particularly reliable connection of the sleeve wall and the reinforcing part is also brought about.
  • the object of the invention is also achieved in that the reinforcing part is provided on the outer surface of the sleeve.
  • the reinforcement part is inserted into the injection mold and in this way during the manufacturing process of the sleeve with its plastic wall, i.e. the expansion and, if necessary, the reducing section are firmly connected.
  • the reinforcing part can be screwed onto a thread provided on an outer surface of the sleeve.
  • the thread can be sprayed onto this during the manufacture of the sleeve or can also be cut open subsequently.
  • the reinforcing part can then - in the form of a further sleeve - be screwed onto the actual plastic sleeve in order to absorb the pressure forces acting radially outwards.
  • a modification of the basic idea of the invention for so-called double sleeves is also possible. These have the same inner diameter over their entire length.
  • the formation of a reducing section can be dispensed with.
  • the pipes to be functionally connected to each other are inserted into the socket from one side. Due to the existing clamping and sealing rings, there is then a liquid-tight and restrained connection.
  • the reinforcing part of this double sleeve or double push-in sleeve absorbs the radial forces generated to the outside.
  • the reinforcement part usually consists of metal, in particular sheet steel, aluminum sheet.
  • the sheet can also be made of an aluminum alloy or another metallic alloy.
  • the screwed-on reinforcement part mentioned it can also consist of plastic of higher strength, for example polyacetal, polyamide or glass fiber reinforced plastic.
  • Fig. 1 shows a first embodiment of the invention
  • Plastic sleeve with integrated reinforcement part Plastic sleeve with integrated reinforcement part
  • FIG. 2-4 further embodiments of the sleeve according to the invention.
  • a plastic sleeve or sleeve 1 has an expansion 2 and a reducing section 3.
  • a plastic pipeline which consists of several plastic pipes 4 with sleeves 1
  • a plastic pipe 4 'of the same dimension as the pipe 4 - is inserted into the widening 2.
  • One or more clamping rings 5 or discrete clamping elements and a sealing ring 6 are overcome.
  • the clamping rings or the clamping elements 5 lie tightly and firmly against an outer wall 8 of the inserted tube 4 '.
  • the clamping ring 5 brings about the desired restrained connection, while the sealing ring 6, which can be made of rubber, brings about a liquid-tight seal between the sleeve 1 and the inserted pipe 4 '.
  • the clamping rings or clamping elements 5 can consist, for example, of corundum.
  • a reinforcing part 7 is provided in the wall of the plastic sleeve 1. According to FIG. 1, it extends essentially over the widening 2 and the reducing section 3. It serves to absorb forces acting radially outwards, which arise from the insertion of the plastic pipe 4 ′ to be connected into the widening 2.
  • the continuation of the reinforcement part 7 in the reducing section 2 ensures that there is no excessive material stress and cracking in the plastic of the sleeve 1 or the pipe 4 even when such radial forces are passed from the expansion 2 into the reducing section 3.
  • the reinforcing part 7 can be made from a metal sheet and is arranged rotationally symmetrically in the sleeve 1, which is also rotationally symmetrical. It can be provided with recesses 15. This results in a reduction in weight of the part 7.
  • the plastic of the sleeve 1 can penetrate into these recesses during the manufacturing process, so that there is a particularly intimate and firm connection between the reinforcing part 7 and the plastic sleeve 1. 1 can be formed from a metal sheet, for example steel sheet. Grooves for receiving one or more clamping rings 5 or discrete clamping elements 5 and for receiving the sealing ring 6 are provided in the sleeve 1 itself.
  • FIG. 2 shows an embodiment of the plastic sleeve 1 according to the invention that is modified from the object of FIG. 1.
  • the reinforcement part 7 is designed with several undercuts 9, which are filled with plastic during the injection molding process. This leads to the necessary anchoring between the plastic sleeve 1 and the reinforcement part 7.
  • the reinforcement part is designed similarly to that shown in FIG. 7.
  • ring grooves for receiving the Kêtm rings 5 or discrete clamping elements 5 and the sealing ring 6 are also provided in the reinforcement part 7.
  • the reinforcing part 7 is surrounded by plastic.
  • the inner surface of the sleeve 1, as shown, is partially formed by the reinforcing part 7, which is not embedded there in the plastic of the sleeve 1.
  • the reinforcing part 7 is provided there on the outer surface of the sleeve 1.
  • the connection with the plastic of the sleeve 1 is in turn effected via undercuts or annular grooves 9, which are filled with plastic during the injection molding process. Similar to the subject of FIG. 1, here again grooves for the clamping rings 5 and the sealing ring 6 are provided in the plastic of the sleeve 1, that is to say the widening 2 thereof. 4, a thread 10 is provided on the circumference thereof.
  • the armoring part 7 is designed so that it serves to receive the clamping ring 5 at the same time.
  • the sealing ring 6 is provided in a separate groove in the plastic sleeve 1, ie in its widening 7.
  • Fig. 5 shows a modified embodiment of the basic idea of the invention.
  • a double sleeve 20 is used for blunt mating two plastic pipes 4 using the principles of the invention described above.
  • the reinforcing part 7 is symmetrical for receiving sealing rings 5 and 6 clamping rings. Its inner surface forms the contact surface for the two pipes to be inserted.
  • the reinforcement part 7 is extrusion-coated with plastic on the outer circumference. It in turn has undercuts or annular grooves 9, by means of which it is firmly arranged in the plastic sleeve 20.
  • the clamping ring or the clamping elements 5 can also be made, for example, of polyoxymethylene (glass fiber reinforced).
  • the sleeve according to the invention can either be molded on-line directly to the tube following the extrusion of the tube. It is also possible to manufacture the sleeve in a separate work step from the pipe production and then butt weld it to one another at the transition area between the reducing section 3 and the pipe 4.
  • the reinforcing part 7 is injected into the sleeve 1 during the manufacturing process. This results in a rational strengthening of the sleeve according to the invention and a sufficiently non-positive connection between the plastic of the sleeve 1 and the reinforcing part 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

L'invention concerne un manchon en matière plastique (1) servant à assembler des tuyaux en matière plastique (4) de même diamètre ou approximativement de même diamètre, destinés à des fluides conducteurs de pression, par exemple à de l'eau potable ou à des eaux usées. Afin de permettre l'assemblage par liaison de force longitudinale, étanche à la pression, du tuyau en matière plastique (4) à raccorder, ce manchon présente une partie élargie (2) ainsi qu'une bague d'étanchéité (5) et une bague de serrage (6). Une partie de réduction (3) est située entre la partie élargie (2) et le tuyau (4) au niveau duquel le manchon (1) est prévu. Ce dernier (1) présente une armature (7) qui absorbe les forces de compression radiales et qui est noyée dans la matière plastique du manchon (1), sous forme de composant intégré.
PCT/EP1999/008493 1998-11-06 1999-11-05 Manchon emboitable pour assemblage par liaison de force longitudinale Ceased WO2000028252A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU15515/00A AU1551500A (en) 1998-11-06 1999-11-05 Longitudinal non-positive plug-in bushing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19851162.0 1998-11-06
DE19851162A DE19851162A1 (de) 1998-11-06 1998-11-06 Längskraftschlüssige Steckmuffe

Publications (1)

Publication Number Publication Date
WO2000028252A1 true WO2000028252A1 (fr) 2000-05-18

Family

ID=7886885

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/008493 Ceased WO2000028252A1 (fr) 1998-11-06 1999-11-05 Manchon emboitable pour assemblage par liaison de force longitudinale

Country Status (3)

Country Link
AU (1) AU1551500A (fr)
DE (1) DE19851162A1 (fr)
WO (1) WO2000028252A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10340477B3 (de) * 2003-09-03 2005-07-21 Reinert-Ritz Gmbh Zugfeste Rohrverbindung
US7284310B2 (en) * 2004-12-07 2007-10-23 S & B Technical Products, Inc. Method of manufacturing a seal and restraining system
ITBO20060101A1 (it) * 2006-02-13 2007-08-14 Sica Spa Condotto in materiale termoplastico, in particolare in materiale poliolefinico per fluidi in pressione, con estremita' sagomata a bicchiere.
DE102006062238B3 (de) * 2006-12-22 2008-06-12 Reinert-Ritz Gmbh Zugfeste Rohrverbindung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1824500A (en) * 1928-02-28 1931-09-22 Vereinigte Stahlwerke Ag Reenforced joint for socket pipes
CH151882A (de) * 1930-10-16 1931-12-31 Von Roll Ag Rohr mit mindestens einem verstärkten Verbindungsende.
US3653688A (en) * 1970-02-28 1972-04-04 Akira Sakakibara Pipe coupling device
US3861721A (en) * 1972-01-20 1975-01-21 Hans Berghofer Pipe expansion joint

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1168039A (en) * 1968-09-13 1969-10-22 Hepworth Iron Co Ltd Improvements in or relating to Pipe Couplings
GB2143918B (en) * 1983-07-23 1986-09-10 Hepworth Plastics Ltd Pipe couplings
DE29619454U1 (de) * 1996-08-01 1997-01-09 Schnallinger, Helfried, Ing., Sarmingstein Kunststoffmuffe für Kunststoffrohre oder Fittinge
DE29709718U1 (de) * 1997-06-04 1997-08-14 Gades, Manfred, Dipl.-Ing., 29396 Schönewörde Längskraftschlüssige Rohrverbindung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1824500A (en) * 1928-02-28 1931-09-22 Vereinigte Stahlwerke Ag Reenforced joint for socket pipes
CH151882A (de) * 1930-10-16 1931-12-31 Von Roll Ag Rohr mit mindestens einem verstärkten Verbindungsende.
US3653688A (en) * 1970-02-28 1972-04-04 Akira Sakakibara Pipe coupling device
US3861721A (en) * 1972-01-20 1975-01-21 Hans Berghofer Pipe expansion joint

Also Published As

Publication number Publication date
DE19851162A1 (de) 2000-05-31
AU1551500A (en) 2000-05-29

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