Seal assembly and method for locking a seal

Abstract

The invention relates to a seal assembly (1) for a suction roll (6), comprising a holder (2), a seal (3), and an intermediate piece (4). The invention is characterised in that the seal (3) comprises a clamping body (5), the clamping body (5) and the intermediate piece (4) being designed to form a wedge connection. The invention enables the seal to be securely locked in position in the holder.

Description

[0001] SEALING ARRANGEMENT AND METHOD FOR LOCKING A SEAL

[0002] The invention relates to a sealing arrangement for a suction roller, comprising a holder, a seal, and an intermediate piece, wherein the seal includes a clamping element and is movable relative to the holder and is at least partially arranged within the holder. The invention also relates to a method for locking a seal in a desired position within a holder.

[0003] Sealing arrangements for suction rollers are known in the prior art. These sealing arrangements allow for the sealing of a vacuum zone, particularly in the axial direction of the suction roller. The seal of the sealing arrangement is guided in a holder and lockable in the holder, thus enabling the seal to be locked against the inner surface of the suction roller. Locking the seal offers several advantages. For example, it reduces the contact of the seal with the inner surface and, in particular, prevents permanent active pressure of the seal against the inner surface of the suction roller. This reduces wear on the seal and / or the inner surface, energy consumption—especially for driving the suction roller—and, more generally, noise from the suction roller.

[0004] DE 1975 7721 A1 discloses a sealing device for sealing a pressure zone, wherein a sealing element is movable relative to a holder and can be fixed by clamping with respect to the holder.

[0005] DE 1988 2739 B4 discloses a sealing structure for a suction box in a suction roller, wherein a seal is arranged in a holder, and the seal can be locked at a desired position in the holder via a locking device.

[0006] EP 080 5892 B1 relates to a sealing arrangement for a suction roller with a holder and a seal, wherein the seal can be moved in the holder by means of a load device.

[0007] EP 065 2322 A1 discloses a sealing design comprising a seal provided in a holder, wherein a locking device is provided between the seal and the holder. DE 10 2005 026 311 A1 relates to a sealing device with a sealing element arranged on a holder, wherein the sealing element can be fixed to the holder by means of a fixing element.

[0008] US 300 7518 A discloses a means for preventing the leakage of liquid, and EP 229 4261 B1 discloses a strip arrangement (1 ) for a machine for producing a fibrous web.

[0009] The object of the invention is a sealing arrangement for a suction roller that allows for convenient, effective, and secure locking of the seal. Thus, even the application of minimal force should allow for secure locking. Likewise, once the seal has been locked, the locking should be effectively maintained – i.e., with minimal or no effort – and also by

[0010] Operating fluctuations, e.g., of the compressed air or hydraulic system, or leakage, should not be significantly affected. Finally, the sealing arrangement should be simple in design, i.e., comprise a basic construction with as few components as possible, to enable the formation of a robust and durable sealing arrangement.

[0011] According to the invention, this is achieved by designing the clamping body and the intermediate piece to form a wedge connection such that, when the seal, in particular the clamping body, is moved relative to the intermediate piece, a clamping effect, in particular a spreading effect, can be achieved between the clamping body and the intermediate piece, and a force, in particular a frictional force due to pressure, can be exerted on the holder via the clamping body or via the intermediate piece, so that the seal can be locked in a desired position in the holder.

[0012] The inventor recognized that a wedge connection allows for optimal locking. By forming the wedge connection between the intermediate piece and the clamping element encompassed by the seal, the seal can be locked in a desired position within the holder. The clamping action, and in particular the spreading action between the clamping element and the intermediate piece, exerts a force, especially a frictional force due to pressure, on the holder, thereby locking the seal, particularly the clamping element, the intermediate piece, and the holder relative to each other. The wedge connection according to the invention particularly enables the formation of a strong locking mechanism solely through the relative movement of the seal, especially the clamping element, to the intermediate piece, thereby achieving the spreading action between the clamping element and the intermediate piece.The relative movement of the seal, particularly the clamping element, to the intermediate piece can be achieved by a wedge force, wherein the wedge force preferably acts—according to an action / reaction principle—on both the seal, particularly the clamping element, and the intermediate piece. The wedge force can be achieved, for example, via a first loading medium or a first loading means, particularly a first loading hose, arranged between the intermediate piece and the seal. For example, a loading medium, particularly water, can be introduced under pressure directly into a space between the seal, particularly the clamping element, and the intermediate piece in order to exert the wedge force on the seal or the intermediate piece. Water is non-toxic, and in many applications of the sealing arrangement, some water leakage would be unproblematic.Preferably, a first loading element, in particular a first loading hose, is inserted into the space between the seal, especially the clamping element, and the intermediate piece. The first loading hose is in contact with the seal, especially the clamping element, and the intermediate piece, and the wedge force transmitted via the hose to the seal or the intermediate piece can be easily controlled by regulating the pressure of a loading medium (preferably air or water) guided through the first loading hose. In particular, the first loading hose ensures that no medium passes from the loading hose into the sealing arrangement.

[0013] According to the invention, the wedge connection allows for a relatively large clamping or spreading effect with relatively small wedge forces, wherein the spreading force resulting from the wedge connection is a multiple of the wedge force. Preferably, the wedge connection is designed such that the wedge force produces a spreading force at least three times greater, and particularly preferably at least six times greater. Corresponding embodiments of wedge connections are known to those skilled in the art, especially since these can be easily determined according to the principles of statics. Furthermore, it can be stated that the wedge force is essentially oriented in a direction pointing towards the inner surface of the shell, preferably perpendicular to a circumferential direction of the inner surface. In contrast, the spreading force is essentially oriented perpendicular to a clamping surface formed between the clamping element and the intermediate piece.

[0014] Advantageously, once the locking mechanism is engaged, the clamping effect or...

[0015] The expanding effect continues as long as there is no opposing relative movement of the seal, especially the clamping element, to the intermediate piece that would release the wedge connection. Once locked, it is therefore theoretically possible to maintain the locking mechanism, at least temporarily, even without external force.

[0016] According to an advantageous first embodiment of the sealing arrangement, the intermediate piece is arranged between the holder and the clamping element, whereas in a second advantageous embodiment of the sealing arrangement, the clamping element is arranged between the holder and the intermediate piece. Both embodiments allow the formation of an advantageous wedge connection between the seal, or the clamping element, and the intermediate piece.

[0017] According to the first embodiment, the spreading effect is achieved in the intermediate piece, with the force, in particular the frictional force, being achieved by pressing the intermediate piece against the holder. Particularly preferably, in the first embodiment, the intermediate piece has a substantially U-shaped cross-section with wedge-shaped flanks arranged relative to each other, wherein the intermediate piece is open towards the seal, and in particular towards the inner surface of the suction roller. The clamping element typically forms a wedge-shaped cross-section that tapers towards the inner surface of the roller.

[0018] According to the first embodiment, the clamping effect can be optimally achieved. In a particularly advantageous embodiment, the U-shaped cross-section of the intermediate piece has a weakening in the area of ​​the flanks, which in particular allows for improved relative mobility between the intermediate piece and the holder.

[0019] According to the second embodiment, the spreading effect is achieved in the clamping body, with the force, in particular the frictional force, being generated by pressing the clamping body against the holder. Particularly preferably, the clamping body has wedge-shaped flanks and a U-shaped cross-section, wherein the clamping body or the U-shaped cross-section is open towards the intermediate piece and, in particular, closed towards the inner surface of the suction roller. The intermediate piece forms a wedge-shaped cross-section that widens towards the inner surface. According to the second embodiment, the clamping effect can be optimally achieved in the same way.

[0020] In an advantageous embodiment of the sealing arrangement, the holder has a substantially U-shaped cross-section, with the holder being open towards the inner surface of the suction roller. In this way, both the first and the second embodiment of the sealing arrangement can be optimally positioned within the U-shaped cross-section of the holder.

[0021] In a further advantageous embodiment of the sealing arrangement, the intermediate piece is movable relative to the holder, wherein the relative movement of the intermediate piece to the holder is achieved via a second loading medium or a second loading means, in particular a second loading hose, arranged between the intermediate piece and the holder. The second loading medium, in particular water, can be introduced directly and under pressure into a space between the intermediate piece and the holder in order to exert a force on the intermediate piece. Preferably, however, a second loading means, in particular a second loading hose, is introduced into the space between the intermediate piece and the holder.The second load hose is in contact with the intermediate piece and the holder, whereby the force transmitted via the second hose to the intermediate piece can be easily controlled by regulating the pressure of a load medium (preferably air or water) guided through the second load hose.

[0022] Particularly preferably, the second loading medium or second loading means allows the seal to move towards the inside of the casing, wherein the seal is preferably guided over the holder and movable towards the inside of the casing via the intermediate piece, the second loading medium or second loading means directly contacts the intermediate piece, and the intermediate piece preferably directly contacts the seal. This allows the seal to be easily extended from the holder or placed against the inside of the casing of the suction roller. In the first embodiment, the direct contact between the intermediate piece and the seal can be easily achieved by bringing the U-shaped cross-section of the intermediate piece into contact with a base of the seal at its open side, with the clamping element encompassed by the seal forming the wedge-shaped cross-section extending from the base into the U-shaped cross-section of the intermediate piece.In the second embodiment, the direct contact between the intermediate piece and the seal can be achieved just as easily by bringing the U-shaped cross-section of the clamping body into contact with a base of the intermediate piece at the open side, with the intermediate piece forming the wedge-shaped cross-section extending into the U-shaped cross-section of the clamping body from the base.

[0023] A particularly advantageous design is that of a suction roller with a suctionable shell, which includes the sealing arrangement according to the invention. The shell has a circumferential and a longitudinal direction. The sealing arrangement, or the seal itself, is essentially designed in the longitudinal direction, and the seal can be guided against the inner surface of the suction roller's shell.

[0024] The invention also relates to a method for locking a seal in a desired position in a holder, particularly in the sealing arrangement according to the invention, and especially relative to the inner surface of a suction roller, wherein the seal comprises a clamping element and is movable relative to the holder, characterized in that the clamping element and an intermediate piece are configured to form a wedge connection, wherein, to achieve the locking action, the intermediate piece and the seal, or in particular the clamping element, are moved relative to each other in order to create a clamping effect – in particular an expanding effect – between the clamping element and the intermediate piece, and to exert a force, in particular a frictional force due to pressure, on the holder via the clamping element or the intermediate piece. The method according to the invention enables secure locking of the seal even when applying only small forces.

[0025] In an advantageous embodiment of the method, the relative movement of the seal, and in particular the clamping element, to the intermediate piece is effected via a first loading medium or a first loading means, in particular a first loading hose, arranged between the intermediate piece and the seal. The locking of the seal is achieved by the relative movement, wherein the relative movement is effected by the wedge force transmitted via the first loading means or the first loading medium.

[0026] In a further advantageous embodiment of the method, particularly for applying the non-locked seal against the inner surface of the suction roller, the seal, preferably guided by the holder, is first moved relative to the holder via the intermediate piece towards the inner surface of the suction roller. After the seal is in contact with the inner surface, the intermediate piece is moved away from the inner surface relative to the holder to lock the seal in place. Preferably, the seal is no longer moved relative to the holder at this point. Applying the seal against the inner surface of the suction roller can be easily accomplished via a second loading medium or a second loading element, in particular a second loading hose, arranged between the intermediate piece and the holder. The intermediate piece is moved via the second loading medium or...the second load-bearing element is moved relative to the holder; the seal is moved over the intermediate piece, the intermediate piece preferably directly contacting the seal.

[0027] Once the seal is in contact with the inside of the jacket, it is locked in place. For this, the intermediate piece is moved away from the inside of the jacket relative to the holder. This can be achieved simply by means of a first load medium or load means, particularly a first load hose, arranged between the intermediate piece and the seal, especially the clamping element. The intermediate piece is moved relative to the holder by means of the first load medium or load means, and in particular, it is moved away from the inside of the jacket. Preferably, the seal is no longer moved relative to the holder, or the seal remains in contact with the inside of the jacket. This can be achieved by reducing the second force acting on the intermediate piece via the second load medium or load means to the extent that the force acting via the first load medium or load means is reduced.The first force exerted on the intermediate piece by the first load medium is increased. This ensures that at all times during the locking of the seal, the seal is pressed against the inner surface of the shell, and thus the seal directly contacts the inner surface. In an equally advantageous embodiment of the method, to release the locking of the seal, the intermediate piece is moved relative to the holder towards the inner surface of the shell to achieve a relative movement of the intermediate piece to the seal, wherein, in particular, the intermediate piece is moved via the second load medium or a second load medium, especially a second load hose, arranged between the intermediate piece and the holder. In particular, the intermediate piece is thus moved relative to the pressure applied against the inner surface of the shell – i.e.,The seal touching the inside of the mantle moves, and accordingly the wedge connection between the seal and the intermediate piece can be released.

[0028] The invention will now be described using figures.

[0029] Fig. 1 shows the first embodiment of the sealing arrangement according to the invention, wherein the seal is spaced away from the inside of the jacket.

[0030] Fig. 2 shows the first embodiment of the sealing arrangement according to the invention, wherein the seal is placed against the inside of the jacket.

[0031] Fig. 3 shows the first embodiment of the sealing arrangement according to the invention, wherein the seal is placed against the inside of the jacket and locked in place.

[0032] Fig. 4 shows the second embodiment of the sealing arrangement according to the invention, wherein the seal is spaced away from the inside of the jacket.

[0033] Fig. 1 shows the first embodiment of the sealing arrangement 1 according to the invention, wherein the seal 3 is spaced apart from the inner surface 7 of the suction roller 6. The sealing arrangement 1 comprises the holder 2, the seal 3 encompassing the clamping element 5, and the intermediate piece 4. According to the first embodiment, the intermediate piece 4 is arranged between the holder 2 and the clamping element 5. The seal 3 is guided over the holder 2 and is movable relative to the holder 2, and is arranged at least partially within the holder 2. The holder 2 has, for example, a U-shaped cross-section and is open towards the inner surface 7; the intermediate piece 4 has a U-shaped cross-section with wedge-shaped flanks 8 and is likewise open towards the inner surface 7, wherein the U-shaped cross-section of the intermediate piece 4 has the weakening 9 in the region of the flanks 8.The seal 3 comprises the clamping element 5, which has a wedge-shaped cross-section that tapers towards the inner surface 7 of the sleeve. The clamping element 5 and the intermediate piece 4 are designed to form a wedge connection, whereby a clamping effect, in particular an expanding effect, can be achieved between the clamping element 5 and the intermediate piece 4 when the seal 3, in particular the clamping element 5, moves relative to the intermediate piece 4. This effect, in turn, exerts a force, in particular a frictional force due to pressure, on the holder 2 via the intermediate piece 4, so that the seal 3 can be locked in a desired position in the holder 2. The relative movement of the seal 3, in particular the clamping element 5, to the intermediate piece 4 is achieved by a wedge force, which – according to an action / reaction principle – acts on both the seal 3, in particular the clamping element 5, and the intermediate piece 4.The wedge force is achieved in Fig. 1 via the first loading means, or the first loading hose 11, arranged between the intermediate piece 4 and the clamping body 5.

[0034] Furthermore, the intermediate piece 4 is movable relative to the holder 2, the relative movement of the intermediate piece 4 to the holder 2 being enabled by the second load-bearing element, or second load-bearing hose 12, arranged between the intermediate piece 4 and the holder 2. The second load-bearing hose 12 allows the seal 3 to be easily extended from the holder 2, or applied to the inner surface 7 of the suction roller 6, with the intermediate piece 4 directly contacting the seal 3, or the intermediate piece 4 being brought into contact with the base 16 of the seal 3 at the open side of the U-shaped cross-section of the intermediate piece 4, with the clamping element 5 encompassed by the seal 3 forming the wedge-shaped cross-section extending into the U-shaped cross-section of the intermediate piece 4 from the base 16. The illustration in Fig.The distance of the seal 3 from the inner surface 7 of the suction roller 6, as shown in Figure 1, results in particular from the fact that the second load-bearing element, or the second load-bearing hose 12, is essentially relaxed, allowing the intermediate piece 4 and the seal 3 to sink downwards – i.e., away from the inner surface 7 – due to the effect of gravity. In particular, the first load-bearing element, i.e., the first load-bearing hose 11, is also shown in a substantially relaxed state in Figure 1, which allows the seal 3 to directly contact the intermediate piece 4, or the intermediate piece 4 to contact the base 16 of the seal 3 at the open side of the U-shaped cross-section, and in particular, there is no locking mechanism for the seal 3.

[0035] Fig. 2 shows the first embodiment of the sealing arrangement 1 according to the invention, wherein the seal 3 is placed against the inner surface 7 of the casing. All descriptions relating to the object shown in Fig. 1 also apply to the object shown in Fig. 2.

[0036] Compared to Fig. 1, in Fig. 2 the intermediate piece 4 was moved relative to the holder 2 towards the inner surface 7 of the sleeve. This relative movement of the intermediate piece 4 to the holder 2 was effected via the second load-bearing element, or second load-bearing hose 12, arranged between the intermediate piece 4 and the holder 2. The second load-bearing hose 12 thus allows the seal 3 to be easily extended from the holder 2 and placed against the inner surface 7 of the suction roller 6. The intermediate piece 4 directly contacts the seal 3 at its base 16, and the second load-bearing hose 12 presses the seal 3 against the inner surface 7 of the sleeve via the intermediate piece 4. The second load-bearing element, or second load-bearing hose 12, was used to press the seal 3 against the inner surface 7 of the sleeve.

[0037] The load hose 12 is thus essentially tensioned or pressurized to achieve a corresponding expansion. The first load element shown in Fig. 2, i.e., the first load hose 11, is essentially shown in a relaxed state, whereby the seal 3 directly contacts the intermediate piece 4 at the base 16, or, in particular, the seal 3 is not locked in place.

[0038] Fig. 3 shows the first embodiment of the sealing arrangement 1 according to the invention, wherein the seal is placed against the inner surface of the casing and locked in place. All embodiments relating to the object shown in Fig. 1 and Fig. 2 also apply to the object shown in Fig. 3.

[0039] Compared to Fig. 2 (showing the sealing 3 against the inner surface of the casing 7), the sealing 3 is locked in place in Fig. 3. For this purpose, the intermediate piece 4 was moved away from the inner surface of the casing 7 relative to the holder 2. This movement is easily achieved via the first load tube 11 located between the intermediate piece 4 and the sealing 3, particularly the clamping element 5. The first load tube 11 thus allows the intermediate piece 4 to be moved away from the inner surface of the casing 7 while the sealing 3 remains in contact with the inner surface of the casing 7. This can be achieved, in particular, by reducing the second force applied to the intermediate piece 4 via the second load tube 12 to the same extent that the first force applied to the intermediate piece 4 via the first load tube 11 is increased.This ensures that at every point during the locking of the seal 3, the seal 3 is pressed against the inner surface of the jacket 7, and thus the seal 3 directly touches the inner surface of the jacket 7.

[0040] Fig. 4 shows the second embodiment of the sealing arrangement 1 according to the invention, wherein the seal 3 is spaced away from the inner surface of the jacket 7.

[0041] The sealing arrangement 1 comprises, analogously, the holder 2, the seal 3 encompassing the clamping element 5, and the intermediate piece 4. According to the second embodiment, the clamping element 5 is arranged between the holder 2 and the intermediate piece 4. The seal 3 is guided over the holder 2 and is movable relative to the holder 2, and is arranged at least partially within the holder 2. The holder 2 has, for example, a U-shaped cross-section and is open towards the inner surface 7 of the casing; the clamping element 5 has wedge-shaped flanks 10 and a U-shaped cross-section, wherein the clamping element 5, or the U-shaped cross-section, is open towards the intermediate piece 4 and, in particular, closed towards the inner surface 7 of the suction roller 6. The intermediate piece 4 forms a wedge-shaped cross-section that widens towards the inner surface 7 of the casing.The clamping element 5 and the intermediate piece 4 are designed to form a wedge connection, whereby, during relative movement of the seal 3, in particular the clamping element 5, to the intermediate piece 4, a clamping effect, in particular an expanding effect, can be achieved between the clamping element 5 and the intermediate piece 4, and a force, in particular a frictional force, due to pressure, can be achieved via the clamping element 5 on the holder 2, so that the seal 3 can be locked in a desired position in the holder 2. The relative movement of the...

[0042] The seal 3, in particular of the clamping element 5, is pressed against the intermediate piece 4 by a wedge force, the wedge force acting – according to an action / reaction principle – on both the seal 3 and the intermediate piece 4. In Fig. 4, the wedge force is achieved via the first load-bearing element, or the first load-bearing hose 11, arranged between the intermediate piece 4 and the seal 3. Furthermore, the intermediate piece 4 is movable relative to the holder 2, the relative movement of the intermediate piece 4 to the holder 2 being effected via the second load-bearing element, or the second load-bearing hose 12, arranged between the intermediate piece 4 and the holder 2. The second load-bearing hose 12 allows the seal 3 to be easily extended from the holder 2, or applied to the inner surface 7 of the suction roller 6, with the intermediate piece 4 directly contacting the seal 3.the clamping body 5 touches the base 16 of the intermediate piece 4 at the open side of the i-shaped cross-section of the clamping body 5, and the wedge-shaped cross-section of the intermediate piece 4, which widens towards the inner side 7 of the shell, extends into the U-shaped cross-section of the clamping body 5.

[0043] The spacing of the seal 3 from the inner surface 7 of the suction roller 6, as shown in Fig. 4, results from the fact that the second load-bearing element, or the second load-bearing hose 12, is essentially relaxed, allowing the intermediate piece 4 and the seal 3 to sink downwards – i.e., away from the inner surface 7 – due to the effect of gravity. In particular, the first load-bearing element, i.e., the first load-bearing hose 11, is also shown in an essentially relaxed state in Fig. 4, whereby the seal 3 directly contacts the intermediate piece 4. This occurs because the intermediate piece 4, via its base 16, contacts the clamping element 5 at the open side of the U-shaped cross-section of the clamping element 5, and thus, in particular, there is no locking mechanism for the seal 3.

[0044] The present invention offers numerous advantages. For example, the sealing arrangement according to the invention allows for a cost-effective, efficient, and secure locking of the seal. In particular, even the application of minimal force enables secure and efficient locking of the seal. Likewise, the locking mechanism can be maintained with minimal effort and is insensitive to operating fluctuations, such as those of the compressed air or hydraulic system. Finally, the sealing arrangement has a simple design, meaning it can be implemented with a basic construction and comprises relatively few components, thus enabling the creation of a robust and durable sealing arrangement.

[0045] Reference numeral 1 Sealing arrangement

[0046] 2 holders

[0047] 3 Seal

[0048] 4 Intermediate piece 5 Clamping body

[0049] 6 suction roller

[0050] 7 Inside of coat

[0051] 8 Flank of the intermediate piece

[0052] 9 Weakening 10 Flank of the clamping body

[0053] 11 First load hose

[0054] 12 Second load hose

[0055] 13 coat

[0056] 14 Circumferential direction 15 Longitudinal direction

[0057] 16 base

Claims

Patent claims 1. Sealing arrangement (1) for a suction roller (6), comprising a holder (2), a seal (3) and an intermediate piece (4), wherein the seal (3) comprises a clamping element (5) and the seal (3) is movable relative to the holder (2) and is arranged at least partially within the holder (2), characterized in that the clamping element (5) and the intermediate piece (4) are designed to form a wedge connection such that, when the seal (3), in particular the clamping element (5), is moved relative to the intermediate piece (4), a clamping effect, in particular a spreading effect, can be achieved between the clamping element (5) and the intermediate piece (4), and a force, in particular a frictional force, due to pressure, can be exerted on the holder (2) via the clamping element (5) or via the intermediate piece (4), so that the seal (3) can be locked in a desired position in the holder (2).

2. Sealing arrangement (1) according to claim 1, wherein in a first embodiment the intermediate piece (4) is arranged between the holder (2) and the clamping body (5), or in a second alternative embodiment the clamping body (5) is arranged between the holder (2) and the intermediate piece (4).

3. Sealing arrangement (1 ) according to claim 2 according to the first embodiment, wherein the intermediate piece (4) has a substantially U-shaped cross-section with wedge-shaped flanks (8) arranged relative to each other, and the intermediate piece (4) is open towards the seal (3), and in particular towards the inner surface (7) of the suction roller (6).

4. Sealing arrangement (1 ) according to claim 3, wherein the U-shaped cross-section has a weakening (9) in the area of ​​the flanks (8).

5. Sealing arrangement (1) according to claim 3 or 4, wherein the clamping body (5) forms a wedge-shaped cross-section tapering towards the inner side (7) of the jacket.

6. Sealing arrangement (1) according to claim 2 according to the second embodiment, wherein the clamping body (5) has wedge-shaped flanks (10) arranged relative to each other, the clamping body (5) has a U-shaped cross-section has the clamping body (5), or the U-shaped cross-section, open towards the intermediate piece (4) and in particular closed towards the inner surface (7) of the suction roller (6).

7. Sealing arrangement (1) according to claim 6, wherein the intermediate piece (4) forms a wedge-shaped cross-section widening towards the inner side (7) of the mantle.

8. Sealing arrangement (1) according to one of claims 1 to 7, wherein the relative movement of the seal (3) to the intermediate piece (4) can be achieved via a first loading medium or a first loading means, in particular a first loading hose (11), arranged between the intermediate piece (4) and the seal (3).

9. Sealing arrangement (1) according to one of claims 1 to 8, wherein the holder (2) has a substantially U-shaped cross-section and the holder (2) is open to the inner surface (7) of the suction roller (6).

10. Sealing arrangement (1) according to one of claims 1 to 9, wherein the intermediate piece (4) is movable relative to the holder (2) and the relative movement of the intermediate piece (4) to the holder (2) can be achieved via a second load medium or a second load means, in particular a second load hose (12), arranged between the intermediate piece (4) and the holder (2).

11. Suction roller (6) with a suctionable jacket (13), comprising a sealing arrangement (1) according to one of claims 1 to 10, wherein the jacket (13) has a circumferential direction (14) and a longitudinal direction (15); the sealing arrangement (1) or the seal (3) is substantially aligned in the longitudinal direction (15); and the seal (3) is guideable against the inner side (7) of the jacket of the suction roller (6).

12. Method for locking a seal (3) at a desired position in a holder (2), in particular in the sealing arrangement (1) according to any one of claims 1 to 11, and in particular relative to an inner surface (7) of a suction roller (6), wherein the seal (3) comprises a clamping element (5) and the seal (3) is movable relative to the holder (2), characterized in that the clamping element (5) and an intermediate piece (4) are configured to form a wedge connection, wherein, to achieve the locking action, the intermediate piece (4) and the seal (3), or in particular the clamping element, are moved relative to each other in order to achieve a clamping effect - in particular a spreading effect - between the clamping body (5) and the intermediate piece (4), and to achieve a force effect, in particular a frictional force due to pressure, on the holder (2) via the clamping body (5) or the intermediate piece (4).

13. Method according to claim 12, wherein the relative movement of the seal (3) to the intermediate piece (4) is effected via a first loading medium or a first loading means, in particular a first loading hose (11) arranged between the intermediate piece (4) and the seal (3).

14. Method according to claim 12 or 13, wherein, in particular, to apply the non-locked seal (3) against the inner surface (7) of the suction roller (6) according to claim 11, the seal (3) is first moved via the intermediate piece (4) relative to the holder (2) against the inner surface (7) of the suction roller (6), wherein, after the seal (3) is in contact with the inner surface (7) - to lock the seal (3) - the intermediate piece (4) is moved away from the inner surface (7) relative to the holder (2), wherein preferably the seal (3) is not moved relative to the holder (2).

15. Method according to one of claims 12 to 15, wherein to release the locking of the seal (3) the intermediate piece (4) is moved relative to the holder (2) in the direction of the inner surface (7) of the jacket in order to achieve a relative movement of the intermediate piece (4) to the seal (3), wherein in particular the intermediate piece (4) is moved via a second loading medium or a second loading means, in particular a second loading hose (12), arranged between the intermediate piece (4) and the holder (2).

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