DE2048227A1 - Pipe connection - Google Patents

Description

ΡΛΤΕ NTAN WALTE

DIP L.- IN G. D R. 1 ¹ J R. DIP L.-l N 6.

VOLKER BUSSE DIETRICH BUSSE

4ε OSNABRCCK, September 30, 1970

DB / Ka

Industri ele Onderneming Wavin NV
KMndellaan 251> Zwolle, Netherlands

Pipe connection.

The invention relates to a pipe connection with a Socket or a socket pipe part, a plug-in pipe part and coupling elements for securing the plug-in pipe part with tensile strength in the receiving area of the socket, as well as, if necessary, interposed seals.

Such pipe connections in which rod-shaped material, e.g. a plastic rod or flexible metal strip, is attached from the outside through an opening in the socket or a socket pipe part, in a recess made in the receiving area and in a recess located opposite this, are well known. The with such 1 (·; οη connections, necessarily In der Wand-den I, Iiri; u> ol · rohrloiif; cn go brought use z \ xx ' inclusion of the'couplingi.; - gl: U-- ''' t- r * t.fJ ln-rt iedcch jj.no uncr'v / üric? hte r'cliwficnun; ·· <\ f: v> ti Ln-

Ί 0 Ö 817/1 32 7

8AD ORIGINAL

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plug-in tube end.

The invention is based on the object of creating a pipe connection of the type mentioned at the outset which this deficiency unci remedies without introducing coupling links from the outside and without making a groove in the plug-in pipe part a reliable, tensile connection of the parts is guaranteed at all times.

This object is achieved in that in the Inside of the respective outer area of the sleeve a recess Such shape and dimensions are provided that the end of a plug-in pipe part past the in this recess accommodated coupling elements can be pushed in, and that the inner surface of the coupling members cooperates with the surface of the outer wall of the associated plug-in pipe part in such a way that that when the plug-in pipe part moves outwards relative to the / lufnahmebareich the sleeve, the coupling members with the ■ Plug-in tube part taken along and between the outer wall of the same and the inner wall of the recess are clamped in the receiving area to form a secure connection.

The coupling members advantageously consist of a spiral spring odex * a conical, slotted ring, one or both of which cooperate with the remaining parts of the pipe joint Surfaces regularly ribs, screw threads or pins! 'Urned Proceedings on the 13th.

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20Α8227

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Preferably there is at least one and expediently both Surfaces of the with the walls of the remaining pipe connection parts Cooperating coupling members made of a material that has the same hardness as the wall material of the pipe cable to be connected Has.

The pipe connection is particularly suitable for tensile strength connections of parts made of thermoplastic material, preferably made of polyethylene or polypropylene, coupling members being preferred in the form of a steel spiral spring, a slotted ring provided with screw thread eus polyvinyl chloride, in particular hard polyvinyl chloride, which on one or both of its with the plug-in pipe part and the receiving area of the Sleeve cooperating surface. '! pin or cone-shaped Has projections or is profiled in another way, find use. If you wish, you can also take one with you provided with a hard surface layer made of polyvinyl chloride Use ring.

When using such deformable coupling links with a ³ r

Surface that is harder than that of the parts to be joined, ' the hard profile penetrates the thermoplastic material and in this way ensures an absolutely reliable, tensile connection.

When using before. thermoplastic material 1 for the single - stick pipe parts and, for example, a coupling element consisting of a steel ring

+ at least 10 9 8 17/1327 ■

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member it is indicated., for the purpose of preventing deformations in the V / and of the Einsteckrohrtoils by the exerted pressure of the coupling member in the former to attach a steel sleeve.

In order to ensure the cooperation between the coupling links and the Push-in pipe part to promote., Can lie outside of the push-in pipe part be additionally profiled in the area of its end, e.g. provided with a screw thread. You can even use smooth coupling members achieve their entrainment as a result of clamping.

An embodiment of the subject matter of the invention is illustrated in more detail in the drawing. In this part A shows the Figure a pipe connection with a conical .Ring as a coupling member and part B instead a round wound Feather.

The pipe connection shown has a pipe part in the form of a socket 1 made of polyethylene with two receiving areas? and 2 'on. In the receiving area 2, 2 'there is in each case a plug-in pipe part 3b £ W. 3 '. In the receiving areas 2,2 'of the socket ί recesses ^, ¹ H for accommodating coupling members 5 and 5' are provided.

The clutch control 5 shown in part Ä 'of the' figure consists of a conical slotted ring made of polyethylene of the same

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Hardness and is introduced into the tapering recess 4 from the free end 6 of the receiving area 2. Then the corner part 3 is pushed in. The slotted ring 5 has such an inner diameter that the end 7 of the Einsteckrohrteils 3 can be passed, wherein dei 'ring 5 is pressed with its end wall 8 against the end wall 9 of the recess ¹ I, on the other hand the outer wall 10 of the Einsteckrohibeils clamped in the ring will. Therefore, when the plug-in pipe part 3 is pulled out of the receiving area 2 of the socket 1, it takes the ring 5 with it, which is located between the outer wall 10 of the plug-in pipe part 3 and the wall 11 of the recess ^{1 which tapers conically in the direction of the free end 6 of the receiving area 2} \ stuck.

The surface of the outer wall 10 of the insertion tube part 3 is advantageously provided with a screw thread or ribs I ¹ J.

Preferred catfish 1st which cooperates with the wall of the recess i \ surface 12 of the ring 5 with a profiling, for example in the form of corrugations, preferably iv form of a thread, is provided. This is also the case with the inner surface 13 of the ring 5.

When the insert 3 was pulled out of the receiving area 2, the corrugations or the thread contributed to taking the ring 5 with it and establishing a perfect, tight connection. Next · still know Dicbtrlnpo 15 or 16 vorfx · - 109817/1327

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be seen in a recess 17 or 18 of the receiving area 2 of the socket 1 are housed.

These sealing rings are necessary if the free end of the Surface 13 of the insert pipe part 3 and the mating surface thread wear or are profiled in such a way that medium can pass from the dome pipe.

The coupling members 5 are in the embodiment according to part A of the figure in an area in which the pipe part is pressureless. Therefore, the pipe part can practically not be damaged, what It is then not excluded if the coupling links intervene on a pipe section which is under pressure.

In the right part B of the figure, a similar pipe connection is shown, but with a closed round spiral spring 5 'made of metal wire as a coupling member. The turns of this metal spring then penetrate when using for example polyethylene for the Einsteeftrohrteil 3 ¹ and the receiving portion 2 'in the wall 19 of the recess 4' and in the profiled wall 20 of the Einsteckrohrteils 3 ¹ and ensure an absolutely firm connection. · ^:

To maintain a good, kiss-proof connection there is at least one the surface of the clutch leather 5,5 ', i.e. the ring that j Coil spring od. The like. Preferably made of a material which .ι hilrter than dlo surfaces of the air · connecting pipe parts lab .. ι

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The slotted ring 5 can be used, for example, for a tensile connection of polyethylene pipes are made of hard polyvinyl chloride.

If desired for reinforcement purposes in the ends 7, 7 ¹ Oer Einsteckrohrteile 3 '3' or a steel bushing 22 be mounted. To avoid pressing the corners are rounded or 21 ^f 2i · Oer recess 4.4. The end walls 9 and 9 'should be designed in such a way that when the insert pipe parts 3 _} 3' are moved inward, the coupling members 5 and 5 'are held in place with respect to the insert pipe parts 3, 3'.

The socket 1 shown in the drawing is provided with a stop strap 23, but this is not necessary. Without a rope edge, it is possible with an insert pipe part, on which the profiling at some distance from the end 7.7 ' ends to push this back again after clamping, with a device the Küpplungsglied in the form of the ring from cem end of the area 2 öer plug-in sleeve i to capture and then to pull the plug-in pipe part 3 outwards again. After the AnbririKUxig of the plug-in pipe part 3 ', this is of course no longer possible.

The slotted, fully cross-sectioned ring 5 can also made of metal], which in certain cases is thermoplastic Pipes is preferable. It is also possible to use a plastic ring made of hard polyvinyl chloride, dlesser; Hard metal surfaces with e.g. a

J 0.9-81.1 / 1-32.7.

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Profiling exist, which also gives the desired tensile strength the connection is on hold.

In order to be able to detach an insert pipe 3 or 1> ^% from the socket 1 when both work together with a coupling element designed as a slotted ring, it is recommended that the insert pipe 3 has a left-hand thread on its surface 10 and the insert pipe 3 ¹ with a right-hand thread , or vice versa, one can then unscrew the socket 1 from the pipe 3 or 3 'without difficulty. ^;

It goes without saying, however, that in this case the coupling members 5 are provided with an adapted thread and not a thread Stop collar is present.

1 0981 7/1327

Claims (8)

Expectations: lJ pipe connection, with a socket or a socket pipe part, a plug-in pipe part and coupling members for the most favorable fixing of the plug-in pipe part in the receiving area of the socket, as well as optionally interposed seals, characterized in that in the inside of the respective receiving area (2, 2) the socket ( 1) a recess (4, V) of such shape and dimensions is provided that the end (7,7 ') of an insertion pipe part / vorpe'i can be pushed into the coupling members (5,5') accommodated in this recess j, and that the inner surface (13) of the coupling members with the surface of the outer wall (10) of the associated plug-in pipe part cooperates in such a way that when the plug-in pipe part moves outwards rdative to. Receiving area of the sleeve, the coupling members (5,5 ') with the plug-in pipe part (3,3') taken along and between the outer wall of the same and the inner wall (H) of the recess (4,4 ·) in the. The receiving area can be clamped to form a fixed connection. 2. Pipe connection according to claim 1, characterized in that that one or both of the with the associated recording area (2.2 <) the Kuffe and the Ülnsteckrohrteil (3,3 ') cooperating j Surfaces (12,13) of the coupling members (5) at least the; have the same hardness as the wall material of the counter surfaces! i (10,11) ercteren parts. 109817/1327 BATH ORIGINAL - id - 3 »Pipe connection according to claim 1 or 2, characterized in that that the coupling members each consist of a closed spiral spring (5 ') or one slotted in the longitudinal direction, preferably conical ring (5) exist. 4. Pipe connection according to one or more of the claims 1 to 3> characterized in that at least one of the Connection points (2,2 ', 3,3') cooperating surfaces the coupling links are provided with a profile ift. 5. Pipe connection according to one or more of claims 1 to 4, characterized in that the surface (10) of the Ein teckrohrteils (3j3 ^! ) Is partially given away with a profile. , 6. Pipe connection according to one or more of claims 1 to 4, characterized in that the inner wall (11) of the recess (4,4 ') in the receiving area (2,2') of the sleeve (".) extends in Tapered towards its adjacent end (6,6 '). 7. Pipe connection according to one or more of claims 1 i up to 6, characterized in that the receiver calibrate '(2.2') the socket or the plug-in pipe part (3.3 *) made of polyethylene or Are made of polypropylene. . j I 109817/1327 i BATH ORIGINAL -U- 8. Pipe connection according to one or more of claims 1 to 7, characterized in ₃ daö in a connection with a sleeve (1) and two tensile-tightly connected plug-in pipe parts ι (3,3 ') the surface of the free end of a first pipe part (e.g. 3 ) with left-hand thread and the second pipe part (e.g. ^{3 1} ) with right-hand thread, preferably with the same pitch. 109817/13 27 Blank page