DE20301210U1 - Sealing device for sealed through-passage of pipe through wall penetration has attachment element for fitting of sealing device to wall and installed between two elastic sealing components pressed against pipe and wall by clamping rings - Google Patents

Abstract

The sealing device (1) for the sealed through-passage of a pipe (4) through a wall penetration (2) has an attachment element (5) for the fitting of the sealing device to the wall having the penetration, and is installed between two elastic sealing components (6,7) which are pressed against the pipe and wall by means of clamping rings (8,9). The attachment element has a support element (12) for the support of one sealing component (6) outside the penetration. The support element is constructed as a cylindrical sleeve, and has support element and penetration have more or less the same inside diameter.

Description

Bremen, 27 January 2003

Our reference: DA1878-01DE MAN/ISC/bk

Direct dial: 0421/36 35 46

Applicant/Owner: DOYMA GmbH & Co

Official reference number: New registration

Patent attorneys
European Patent Attorneys
Dipl.-Ing. Günther Eisenführ
Dipl.-Ing. Dieter K. Speiser
Dr.-Ing. Werner W. Rabus
Dipl.-Ing. Jürgen Brügge
Dipl.-Ing. Jürgen Klinghardt
Dipl.-Ing. Klaus G. Göken
Jochen Ehlers
Dipl.-Ing. Mark Andres
Dipl.-Chem. Dr. Uwe Stilkenböhmer Dipl.-Ing. Stephan Keck
Dipl.-Ing. Johannes MB Wasiljeff

Lawyers
Ulrich H. Sander
Christian Spintig
Sabine Richter
Harald A. Foerster

Martinistrasse 24

D-28195 Bremen

Phone +49-10)421-36 35 0

Fax +49-10)421-337 8788 (G3)

Fax +49-10)421-328 8631 (G4)

mail@eisenfuhr.com

http://www.eisenfuhr.com

Patent Attorney

European Patent Attorney

Dipl.-Phys. Frank Meier

Lawyers

Rainer Boehm

Nicol A. Schrömgens, LL. M.

Munich

Patent attorneys

European Patent Attorneys

Dipl.-Phys. Heinz Nöth

Dipl.-Wirt.-Ing. Rainer Fritsche

Lbm.-Chem. Gabriele Leißler-Gerstl

Dipl.-Ing. Olaf Ungerer

Patent Attorney

Dipl.-Chem. Dr. Peter Schuler

Berlin

Patent Attorneys European Patent Attorneys Dipl.-Ing. Henning Christiansen Dipl.-Ing. Joachim von Oppen Dipl.-Ing. Jutta Kaden

Alicante

European Trademark Attorney Dipl.-Ing. Jürgen Klinghardt

DOYMA GmbH & Co
Industriestrasse 43-57, 28876 Oyten

Sealing insert

The present invention relates to a sealing device for sealingly passing a line through an opening in a wall or the like, with an attachment element for attaching the sealing device to the wall having the opening, and two elastic sealing bodies that can be pressed onto the line to be sealed and the wall by means of a tensioning device. The present invention further relates to a sealing device for closing an opening in a wall or the like, with an attachment element for attaching the sealing device to a wall having the opening, and with two elastic sealing bodies that can be pressed onto the opening by means of a tensioning device.

Such sealing devices are known and are used to seal pipes such as supply lines for gas, water, district heating, electricity and other media through openings

to pass through in a sealing manner which is designed for this purpose in walls, ceilings, floors or similar. In the assembled, sealed state, the sealing element, which is usually elastically deformable, is pressed radially inwards against the outer surface of the pipe being passed through and radially outwards against the inner surface of the opening, thus ensuring a seal. The attachment element gives the assembled construction additional support and thus prevents the pipe from shifting or tilting against the wall. The attachment element is sometimes also suitable for protecting the edge of the opening.

A common application of the sealing device is the sealing of a pipe through an opening in a house wall, where the opening is below ground level. After the sealing device has been installed, the relevant area of the wall is filled with sand or soil, which is often followed by artificial compaction of the sand or soil. In the event that no pipe is to be led through an opening, but the opening is to be closed, known sealing devices are designed as blind plugs.

A known sealing device is generally constructed in such a way that two ring-shaped sealing bodies with a central ring in between are arranged in the axial direction between the attachment element and a clamping ring. To achieve the sealing effect, the clamping ring is pressed in the direction of the attachment element and the sealing bodies are thereby squeezed together axially along the line. The resulting radial displacement of the sealing volume both inwards and outwards along the line causes the seal against the line (radially inwards) and against the opening (radially outwards).

The clamping ring is pressed in the direction of the attachment element using clamping elements with clamping devices, usually clamping screws with clamping nuts. Two design variants are known in particular:

In one variant, clamping screws, which are welded to the clamping ring at one end, run in the axial direction of the line through the sealing bodies, the center ring and finally through the attachment element. The clamping is then carried out using clamping nuts, which are screwed onto the ends of the clamping screws.

In the second variant, clamping screws, one end of which is welded to the attachment element, lead through the sealing bodies, the center ring and finally through the clamping ring in the axial direction of the line. Clamping is also carried out here by screwing clamping nuts onto the end of the clamping screw. The difference between these two variants is that in the first variant, clamping is carried out from the side of the attachment element and in the second variant from the side of the clamping ring.

The known sealing devices therefore have the disadvantage that when purchasing a sealing device, it must be determined from which side the tensioning required for sealing is to be carried out. For larger projects in which a large number of sealing penetrations are to be made, it will be necessary to have both variants of the known sealing device in stock. This results in unnecessarily high costs.

The present invention is therefore based on the object of providing a sealing device for sealingly passing through a line

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by creating an opening that can be clamped from either axial direction to achieve the sealing effect. The clamping should therefore be done from either side of the wall. A corresponding blind plug should also be created.

These and other objects are achieved according to the invention by a sealing device of the type mentioned at the outset, which is characterized in that the attachment element is arranged between the sealing bodies.

The sealing device according to the invention therefore preferably has a clamping device with a first and a second clamping part, between which two sealing bodies with the attachment element located between them are arranged in the axial direction of the line. The sealing clamping of the two clamping parts against each other is carried out using clamping elements and clamping means. The clamping elements are attached at one end to the first clamping part and extend in the axial direction of the line to the second clamping part. The clamping means are arranged on the side of the second clamping part. Clamping to achieve the sealing of the sealing device can thus be effected from the second clamping part.

To seal a pipe through an opening in a wall, the sealing device is positioned in the opening so that the attachment element rests against the outside of the wall. One sealing body is located in the opening and the other sealing body is on the side of the attachment element outside the opening. There are basically two options for arranging the clamping device. In one option, the first clamping part is on the side of the attachment element facing away from the wall and thus outside the opening and the second clamping part is on the other side of the attachment element and thus usually in the opening. In

In this case, the clamping device is tightened from the side of the wall facing away from the attachment element. In the other option, the first and second clamping parts are swapped over so that the clamping device is tightened from the side of the attachment element facing the wall. Both options can be achieved with one and the same sealing device according to the invention. It is not necessary to produce two different versions of a sealing device.

The sealing device according to the invention is suitable for fulfilling the prescribed standard.

In a further preferred embodiment, the sealing device is characterized in that the attachment element has a support element for supporting a sealing body outside the opening. When the sealing bodies are clamped and thus squeezed together axially along the line, they move radially inwards and outwards. The sealing body arranged inside the opening presses inwards against the line and outwards against the wall. The sealing body arranged outside the opening presses inwards against the line and outwards against the support element. The support element for the sealing body outside the opening thus partially takes over the task that the wall fulfills for the sealing body inside the opening.

According to a further embodiment, the sealing device has a support element which is essentially designed as a cylinder jacket. The sealing devices described above are usually used for sealingly passing at least one cylindrical line through a cylindrical opening.

This creates an annular gap in the opening in which one of the sealing bodies is arranged. Outside the opening, the

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cylindrical support element together with the cylindrical line forms an annular gap in which the other sealing body is arranged.

The support element preferably has the same inner diameter as the opening. The annular gap formed in the opening and the annular gap created with the aid of the cylindrical support element therefore have the same radial dimensions. This ensures that when clamped, the sealing body in the opening and the sealing body outside the opening deform in the same way and accordingly develop the same sealing effect for the line being passed through.

Preferably, the support element is welded to the attachment element. This allows a firm, permanent and uniform attachment of the support element to the attachment element. The welded connection is useful because it is undesirable for the support element to become detached from the attachment element. The attachment element and the support element become a durable element through welding. This makes handling the sealing device easier.

In a further preferred embodiment, the sealing device has a clamping element for sealingly pressing a protective layer, in particular a film, onto the sealing device. Building walls and also solar panels are often provided with a moisture barrier layer. Such a moisture barrier layer is usually designed as a film and is often referred to as a sealing sheet. So-called thick coatings, for example made of bitumen, are sometimes used. In order to seal a line through such a wall, it is not enough for the line to be sealed against the wall. Rather, it must also be ensured that the line is sealed against the film.

In order to meet this requirement, any

Protective film is placed against the sealing device, preferably the attachment element, and pressed against it using the clamping element. The sealing device is thus sealed against the protective film, which simultaneously results in the protective film being sealed against the line.

According to a further preferred embodiment, the attachment element, clamping rings of the clamping device, the sealing bodies and/or the clamping element are essentially ring-shaped. Such an embodiment is particularly advantageous because in many cases cylindrical lines are guided through cylindrical openings, so that the sealing device adapts well to the shape of the opening and/or the line. In addition, an annular design is easy to achieve in terms of manufacturing technology.

Furthermore, the sealing device is particularly preferably designed in that the sealing body, the attachment element and/or the clamping rings of the clamping device have a convex surface.

This ensures that the axial force acting on the sealing bodies when the sealing device is tightened leads to an even greater radial deformation of the sealing bodies. This makes it easy to further increase the sealing effect of the sealing device.

The sealing device preferably has at least one sealing body which has a depression and/or an incision in a clamping surface. When the sealing device is clamped, a line-axial force is transmitted to the sealing body via the clamping surface of the sealing body. The depression and/or the incision in the clamping surface of the sealing body ensure that a clamping part, for example a clamping ring, partially penetrates the surface of the sealing body during clamping, thereby causing a targeted radial deflection of the

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This achieves an improvement in the sealing effect in a simple manner. Sometimes a sufficient sealing effect can be achieved with only a small axial clamping force.

5 It often happens that an opening is created in a wall which is then not needed. For this purpose, the invention proposes a sealing device for closing an opening, which is characterized in that the attachment element is arranged between the sealing bodies. This sealing device has the same or similar advantages and features of a sealing device according to the invention for sealingly passing a line through an opening. The same or similar embodiments according to the preferred embodiments described above for the sealing device for sealingly passing a line through an opening also occur in the sealing device according to the invention for closing an opening.

It is also preferred in the sealing device for closing an opening that the attachment element, clamping disks of the clamping device and/or the sealing bodies are substantially circular.

The invention is explained in more detail below using two embodiments with reference to two figures. They show:

Figure 1 shows a device according to the invention arranged in an opening
Sealing device in cross section;

Figure 2 shows a sealing device according to Figure 1, but with
swapped clamping rings.

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The sealing device 1 shown in Figure 1 is arranged in an opening 2 in a wall 3. A line 4 is guided through the sealing device 1. The sealing device 1 rests against the wall 3 with its circular disk-shaped attachment element 5. The first rubber-elastic sealing body 6 is arranged on the side of the attachment element 5 facing away from the wall 3. The second rubber-elastic sealing body 7 is arranged on the other side of the attachment element 5. The first and second sealing bodies 6, 7 with the attachment element 5 lying between them are in turn located between a first and second clamping ring 8 and 9. Clamping screws 10 are attached to the first clamping ring 8. The clamping screws 10 lead from the first clamping ring 8 through the second sealing body 7, the attachment element 5, the first sealing body 6 and the second clamping ring 9. A clamping nut 11 is arranged on each end of the clamping screws 10, which protrude through the second clamping ring 9.

The sealing device 1 according to Figure 1 is not yet tightened. By tightening the clamping nuts 11, the first and second clamping rings 8, 9 are moved towards each other and squeeze the first and second sealing bodies 6, 7 between each other in the axial direction of the line. The second sealing body 7 thereby deviates radially on the one hand in the direction of the wall 3 and on the other hand in the direction of the line 4. The first sealing body 6 is enclosed by a tubular support element 12. When squeezed axially of the line, it deviates in the radial direction outwards towards the support element 12 and inwards towards the line 4 and is thus pressed together to form a seal. Due to the radial deflection of the two sealing bodies 6, 7, when the clamping device, which consists of the two clamping rings 8, 9, the clamping screws 10 and the clamping nuts 11, is tightened, the gaps 13, 14 between the first and second sealing bodies 6, 7 and the line 4 as well as the gap 15 between the second sealing body 7 and the wall 3 are closed. The gap between the support element and the first sealing body is also closed.

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The radial deflection of the sealing bodies 6, 7 when tightening the clamping device is increased by the fact that the clamping rings 8, 9 have convex clamping surfaces 16, 17 in sections.

The sealing device 1 also has a clamping ring 18, clamping screws 19 and clamping nuts 20. The clamping screws 19 are fastened with one side to the attachment element 5 and extend from there through the clamping disk 18. The clamping nut 18 is screwed onto the other end of the clamping screw 19. Between the attachment element 5 and the clamping ring 18 there is a gap 21 for inserting the edge of a protective film, which is not shown in the figure. By tightening the clamping nuts 20, the clamping ring 18 is moved towards the attachment element 5, whereby the gap 21 is reduced and finally clamps an inserted film and seals it against the attachment element 5.

The sealing device 1' according to Figure 2 differs from the sealing device 1 according to Figure 1 only in that the clamping device, which consists of the two clamping rings 8, 9, the clamping screws 10 and the clamping nuts 11, is rotated by 180° transversely to the line axis 22 compared to that in Figure 1. The first clamping ring 8 is thus arranged on the side of the attachment element 5 facing away from the wall 3. From there, the clamping screws 10 extend through the first sealing body 6, the attachment element 5, the second sealing body 7 and the second clamping ring 9. The clamping nuts 11 are arranged on the end of the clamping screws 10 protruding through the second clamping ring 9.

All elements of the sealing device V from Figure 2 are identical to the elements of the sealing device 1 from Figure 1. The two sealing devices 1 and V differ in particular in their application in that the clamping for

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Achieving the seal in the sealing device 1' according to Figure 2 is to be carried out from the side of the opening 2, whereas the clamping of the sealing device 1 according to Figure 1 takes place from the side of the sealing device 1 facing away from the opening 2.

The sealing device 1 or 1' according to the invention provides in a simple manner the possibility of carrying out the sealing clamping optionally from one or the other side of the wall.

Claims (12)

1. Sealing device ( 1 ) for sealingly passing a line ( 4 ) through an opening ( 2 ) in a wall ( 3 ) or the like with - an attachment element ( 5 ) for attaching the sealing device ( 1 ) to the wall ( 3 ) having the opening ( 2 ), and - two elastic sealing bodies ( 6 , 7 ) which can be pressed onto the line ( 4 ) to be sealed and the wall ( 3 ) by means of a clamping device,
characterized in that the attachment element ( 5 ) is arranged between the sealing bodies ( 6 , 7 ). 2. Sealing device according to claim 1, characterized in that the attachment element ( 5 ) has a support element ( 12 ) for supporting a sealing body ( 6 ) outside the opening ( 2 ). 3. Sealing device ( 1 ) according to one of the preceding claims, characterized in that the support element ( 12 ) is essentially designed as a cylinder jacket. 4. Sealing device ( 1 ) according to one of the preceding claims, characterized in that the support element ( 12 ) and the opening ( 2 ) have approximately the same inner diameter. 5. Sealing device ( 1 ) according to one of the preceding claims, characterized in that the support element ( 12 ) is welded to the attachment element ( 5 ). 6. Sealing device ( 1 ) according to one of the preceding claims, characterized by a clamping element for sealingly pressing a protective layer, in particular a protective film, onto the sealing device ( 1 ). 7. Sealing device ( 1 ) according to one of the preceding claims, characterized in that the attachment element ( 5 ), clamping rings ( 8 , 9 ) of the clamping device, the sealing bodies ( 6 , 7 ) and/or the clamping element are substantially annular. 8. Sealing device ( 1 ) according to one of the preceding claims, characterized in that the sealing body ( 6 , 7 ), the attachment element ( 5 ) and/or the clamping rings ( 8 , 9 ) of the clamping device have a convex surface. 9. Sealing device ( 1 ) according to one of the preceding claims, characterized in that a sealing body ( 6 , 7 ) has a recess and/or an incision in a clamping surface. 10. Sealing device ( 1 ) for closing an opening ( 2 ) in a wall ( 3 ) or the like, with - an attachment element ( 5 ) for attaching the sealing device ( 1 ) to a wall ( 3 ) having the opening ( 2 ), and - two elastic sealing bodies ( 6 , 7 ) which can be pressed against the opening ( 2 ) by means of a clamping device, characterized in that the attachment element ( 5 ) is arranged between the sealing bodies ( 6 , 7 ). 11. Sealing device ( 1 ) according to claim 10, characterized in that it is designed with features of claims 1 to 10 12. Sealing device ( 1 ) according to claim 10 or 11, characterized in that the attachment element ( 5 ), clamping disks of the clamping device and/or the sealing bodies ( 6 , 7 ) are substantially circular.