DE29804587U1 - Inliner tube - Google Patents

Description

Applicant: Kunststoffröhren Sendenhorst GmbH

Oststor 84-88 D-48324 Sendenhorst

Title:

InIliner pipe

Representative:

Patent attorney Dr. Helmut Hoffmexster Goldstraße D-48147 Münster

A:KSG22_T2.TAT

10

Inliner pipe

15

The invention relates to a pipe made of concrete with an at least partially corrosion-resistant inner lining and fitting pieces provided at the pipe ends that fit relative to one another for directly connecting the individual pipes to one another (inliner pipe).

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DE 40 34 953 A1 discloses a concrete pipe with an inner lining made of plastic, one inner part of which is designed as a pipe-point end part and the other as a socket end part to accommodate the pipe-point end part, with the plastic pipe protruding over the concrete pipe or the concrete casing on the inner sides as an adjustment and assembly aid for the perfect joining of the individual pipes to one another, with the front ends of which can be supported on a circumferential shoulder on the inner wall of the plastic pipe that follows. Between the plastic pipe socket end and the shoulder, a circumferential outer groove is provided in the inner wall, in which a ring-shaped seal made of latex or the like is attached. In addition, ring-shaped seals are also provided between the outer concrete walls and the inner concrete walls for perfect sealing.

The disadvantage is that the plastic pipe only lines the inner wall of the concrete pipe. This means that the socket end and the spigot end are made of concrete, which has a rough surface and a porosity that allows water to diffuse in and through. A cast socket must be used to produce such a socket end made of concrete. This must be cleaned after each production step for a concrete pipe, which requires a lot of time and resources.

The invention is therefore based on the object of improving a pipe made of concrete with a corrosion-resistant inner lining and fitting pieces provided at the pipe ends in a manner that fits relative to one another and is designed as socket receiving and spigot ends for directly connecting the individual pipes of the type mentioned at the beginning, in such a way that the fitting pieces at the pipe ends can be manufactured more precisely and the pipe made of concrete can be manufactured more easily and at a lower cost.

According to the invention, this object is achieved by the features of claim 1.

The advantages achieved with the invention are in particular that the plastic inliner hollow body replaces the otherwise necessary stainless steel casting sleeve with the sleeve lining element. This eliminates the need for laborious knocking out and subsequent cleaning of the casting sleeve. Because the plastic inner pipe merges into the sleeve lining element, the concrete pipe is lined in a liquid-tight manner in the areas that come into contact with waste water and the like. This prevents waste water from penetrating the ground via the sleeve receiving end, thus preventing environmental pollution. In addition, inserting the spigot end into the sleeve receiving end is easier, since the sleeve receiving end in particular is designed to fit more precisely. The sleeve receiving end is no longer so rough, so that the spigot end can be inserted more easily.

The ring seals made of rubber, latex or another elastic material placed on the spigot end are not damaged. The plastic liner hollow body can line the concrete pipe completely or just in the area of its ends.

The sealing chamber can be arranged in the socket lining element and/or in the plastic inner pipe. The respective arrangement of the sealing chamber depends on the design of the compatible spigot end.

The spigot end can have a projection that extends beyond the concrete outer pipe. The advantage is that when the inliner pipe is manufactured, this projection j5 is part of the plastic inner pipe, which is not surrounded by the concrete outer pipe.

The spigot end can also be provided with a spigot lining element. This spigot lining element is arranged on the outer surface and thus forms a smooth surface so that the sealing chambers arranged in the socket lining element are faced with a smooth, sealing surface.

5 A sealing ring can be inserted into the sealing chamber. This sealing ring creates a sealing connection when the spigot end is pushed into the socket end against the overhang protruding from the concrete pipe or against the spigot cladding element.

The plastic inliner hollow body can be made in one or more parts

This means that the plastic inner pipe and the socket lining element can either be a unit or the plastic inner pipe can be placed on the socket lining element or 3&Ggr;-, vice versa.

Between the plastic inner pipe and the socket lining

A circumferential sleeve ring seal can be arranged on the element. This creates a liquid-tight connection between the two elements.

The socket lining element completely lines the inner surface of the socket receiving end. It can be limited on one side by a ring element and on the other side by a sealing carpet element. The sealing carpet element lies against the plastic inner pipe. If the plastic inliner hollow body is made from one piece, the socket lining element merges directly into the plastic inner pipe at this point. If, on the other hand, the plastic inliner hollow body is made from several pieces, the connecting line between these two elements is ¹ at this point.

1S ' -

A circumferential support ring can be arranged on the sealing carpet element. The socket ring seal can then be arranged between this support ring and the plastic inner pipe.

The tip covering element can be molded from plastic. It can have the same thickness as the single or multi-part plastic inliner hollow body and be molded from the same type of plastic.

An embodiment of the invention is shown in the drawing and is described in more detail below. They show:

Fig. l a device for producing sewer concrete pipes in a perspective, schematic representation

position,

Fig. 2a a one-piece plastic liner hollow body with

a socket lining element that also functions as a casting base 3;:, in which

a sealing chamber is arranged in the socket lining element,

Fig. 2b a one-piece plastic liner hollow body with a socket lining element that takes over the function of the casting base, in which the sealing chamber is arranged in a plastic inner pipe,

Fig. 3a shows an inliner pipe made with a plastic inliner hollow body according to Fig. 2a,

Fig. 3b a hollow body with a plastic liner according to

Fig. 2b manufactured inliner pipe,

Fig. 4a a two-part plastic liner hollow body with

a socket lining element that also functions as a casting socket, in which the

Sealing chamber is arranged in the socket lining element,

Fig. 4b a two-part plastic liner hollow body with a casting sleeve

socket lining element in which a sealing chamber is arranged in a plastic inner pipe,

Fig. 5a a hollow body with a plastic liner according to

Fig. 4a manufactured inliner pipe,

Fig. 5b an inliner pipe manufactured with a plastic inliner hollow body according to Fig. 4b,

Fig. 6a two sewer concrete pipes before and

Fig. 6b after assembly with inliner pipes according to Fig. 5a in a sectional, schematic partial representation.

When manufacturing inliner pipes, pipe shapes 1, such as

6
they are shown in Fig. 1.

A one-piece plastic liner hollow body 10 is inserted into the pipe mold as shown in Fig. 2a or 2b. The one-piece plastic liner hollow body 10 consists of a plastic inner pipe 11 and a socket lining element 2. The socket lining element 2 is closed on one side with a ring element 2.2 and on the other side with a sealing carpet element 2.3. The plastic inner pipe 11 and the socket lining element 2 are made of plastic and have essentially the same thickness. As shown in Fig. 2a and 2b, the plastic inner pipe 11 merges into the socket lining element at approximately a right angle on the sealing carpet element 2.3. This is followed by a wall that also essentially runs at a right angle, which is then slightly beveled and then again angled outwards by 90° and merges into the ring element 2.2. The socket lining element is provided with profiles 8.1, ... 8.&eegr;.

In the socket lining element according to Fig. 2a, a sealing chamber 2.4 is formed in the essentially straight part between the sealing carpet element 2.3 and the ring element 2.2 .

In the one-piece plastic liner hollow body according to Fig.

2b, however, the sealing chamber of the same design is formed in the plastic inner tube 2.4. This sealing chamber 2.4 is arranged at a distance from the sealing carpet element 2.3 QQ .

To produce the inliner pipe, either the one-piece plastic inliner hollow body as shown in Fig. 2a or the one as shown in Fig. 2b is inserted into the pipe mold 1. Liquid concrete is then poured into the pipe mold 1. After hardening, this forms a concrete pipe 7, as shown in Figs. 3a and 3b. The liquid concrete is poured into the pipe mold 1.

casting is limited on one side by the inserted plastic liner hollow body and on the other side by the pipe shape l. The ring element 2.2 running around the inside of the pipe shape 1 seals the pipe shape at the bottom. The ring element 2.2 therefore takes on the function of a casting base sleeve.

Once the concrete for the concrete outer pipe 7 has hardened, the socket lining element actively grips the concrete of the socket receiving end 4 and thus ensures a force-fit connection to it. Once the plastic outer pipe 7 is finished, the finished inliner pipe is removed from the pipe mold 1 and the production of the next inliner pipe begins.

In this case, a split inliner hollow body 110 can be used, as shown in Figs. 4a and 4b.

The socket lining element 102 consists of a ring element 102.2, which merges into a substantially straight part, to which a sealing carpet element 102.3 is connected at a right angle. The socket lining element 102 is provided with profiles 108.1, ... 108.&eegr;. A sealing chamber 102.4 is formed in the socket lining element 102 according to Fig. 4a, and no sealing chamber is formed in the socket lining element according to Fig. 4b.

The plastic inner tube 111 according to Fig. 4a is a conventional plastic inner tube. The plastic inner tube 111 according to Fig. 4b differs from that according to Fig. 4a in that a sealing chamber 102.4 is formed in it.

When manufacturing an inliner pipe, the socket lining element 102 is first inserted as shown in Fig. 4a or 4b. QP ₁ Here, too, the socket lining element 102 also takes on the function of the casting socket. The plastic inner layer is then placed on the sealing carpet element 102.3.

pipe 111 is pushed in accordance with Fig. 4a or 4b. A support ring 160 is molded onto the socket lining element 102.3. Before the plastic inner pipe 111 is pushed on, a socket ring seal 150 is placed around its end. When pushed on, the socket ring seal 150 is pressed between the plastic inner pipe 111 and the support ring 160 and also rests on the socket carpet element 102.3. This creates a liquid-tight connection between the plastic inner pipe 111 and the socket lining element 102. The first profile 108.1 is then used behind the support ring 160 as a locking, sealing aid and fixing element. ^:

If the described two-part plastic liner hollow body is used in the respective pipe form 1,

Liquid concrete is then poured in and an inliner pipe is formed as shown in Fig. 5a using a plastic inliner hollow body as shown in Fig. 4a and one as shown in Fig. 5b using a plastic inliner hollow body as shown in Fig. 4b. After hardening, the two-part 2Q plastic inliner hollow body 110 is surrounded by a concrete outer pipe 107 with a spigot end 104.

Fig. 6a shows an inliner pipe with a socket end according to Fig. 5b. A sealing ring 102.1 with a sealing lip is inserted into the sealing chamber 102.4. A support film 102' is molded onto the sealing ring 102.1 as a seal detection device.

2Q This socket receiving end is opposed by a spigot end 105', the outer surface 114 of which is at least partially covered with a spigot covering element 113. The spigot covering element 113 covers the surfaces which are in particular connected to the sealing ring 102.1 and the sealing

Q^ carpet element 102.3 come into contact.

In Fig. 6b a sealing plug connection between the

both compatible ends of the inliner pipes. It can be seen that the tip covering element 113 pushes the lip of the sealing ring 102.1 back so far that it seals itself on and around it. In addition, the tip covering element 113 rests on the sealing carpet element 102.3. Since two plastic parts meet, the impact when the tip end is inserted into the socket receiving end is dampened and in particular does not lead to any material flaking off, as is usual with pure concrete pipes. IQ In addition, all other external surfaces in the area of a spacing joint 109 that forms when pushed together are cleanly and evenly delimited.

This means that there is no splintering of the material, as plastic, as already mentioned, is much less susceptible to splintering than concrete. In addition, the plastic liner hollow body prevents waste water from flowing through the concrete into the ground in the connection area between the spigot and socket ends, which could lead to environmental contamination.

Claims (11)

A:KSG22 A2.TAT Protection claims 1. Pipe made of concrete with at least a partial corrosion-resistant inner lining and at the pipe ends, provided with a fitting relative to one another, designed as socket and spigot ends (4, 5; 104, 105), Fittings for direct connection of the individual ■■ Pipes among each other, wherein the corrosion-resistant inner lining is a plastic inliner hollow body (10; 110), wherein the pipe made of concrete around the plastic inliner hollow body (10; 110) as a concrete outer pipe (6, 7; 106, 107). to be formed and wherein the plastic liner hollow body (10; 110) - a plastic inner tube (11, 12; 111, 112), - a socket lining element (2; 102) and - has at least one sealing chamber (2.4; 102.4). 2. Pipe according to claim 1, characterized in that the sealing chamber (2.4; 102.4) in the socket lining element (2; 102) and/or in the plastic inner tube 25 (11; ill) is arranged. 3. Pipe according to claim 1 or 2, characterized in that the spigot end (5; 105) has a projection projecting beyond the concrete outer pipe (6, 7; 106, 107), which is to be formed by the plastic inner pipe (11, 12; 111; 112). 4. Pipe according to claim 1 or 2, characterized in that the tip end (5; 105) is at least partially provided on its outer surface (14; 114) with a tip covering element (13; 113). A2 ■ ^ ' 5. Pipe according to one of claims 1 to 4, characterized in that the plastic liner hollow body (10; 110) is formed in one or more parts. 6. Pipe according to one of claims 1 to 5, characterized in that a circumferential sleeve ring seal (150) is arranged between the plastic inner pipe (111; 112) and the sleeve lining element (102). 7. Pipe according to one of claims 1 to 6, characterized in that the socket lining element (2; 102) lining an inner surface of the socket receiving end (4; 104) is delimited on one side by a ring element (2.2; 102.2) and on the other side by a sealing carpet element (2.3; 102.3), the sealing carpet element (2.3; 102.3) resting on the plastic inner pipe (11, 12; 111, 112). 8. Pipe according to one of claims 1 to 7, characterized in that a circumferential support ring (60) is arranged on the sealing carpet element (102.3). 9. Pipe according to one of claims 1 to 8, characterized in that the socket ring seal (105) is arranged between the support ring (160) and the plastic inner pipe (111, 112). 10. Pipe according to one of claims 1 to 9, characterized in that in the sealing chamber (2.4; 102.4) a 2Q Sealing ring (2.1; 102.1) must be inserted. 11. Pipe according to one of claims 1 to 10, characterized in that the tip covering element (113) is molded from plastic.