JPH1025687A - Roller press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roller press assuring higher press output, that is, higher dehydration output, in a minimum space requirement. SOLUTION: This roller press for a paper machine comprises a suction press roller 4, delivery press roller 7, additional press rollers 14 and 23 at least each one of which is coupled with the press roller 4 or the delivery press roller 7, respectively, and press felts 15 and 25 guided with the additional press rollers 14 and 24, respectively, so that preferably at least one among the additional press clearances R and S is extended in the running direction of a web A of paper material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention relates to a roller press for a machine, in particular a paper machine, in particular provided with a suction press roller for receiving a material web, such as a cardboard web or a paper web, from a gauze or the like. A press felt guided around the suction press roller is assigned to the suction press roller;
A transfer press roller which forms a press gap with the suction press roller and receives the material web from the suction press roller is of the type provided for transferring the material web to a subsequent machine part.

[0002]

2. Description of the Prior Art Roller presses of this kind serve, in particular, for the dewatering of the corresponding material web. In each case, the desired dewatering power or dewatering capacity is in particular determined by the number of press gaps, but there is usually a limitation in increasing the number of press gaps. Thus, in a known configuration, a roller pair formed by a suction press roller and a transfer press roller is followed by at least one further separate roller pair which forms each additional roller gap. The space required by this, however, is considerable. In this case, furthermore, the open web path created between each pair of rollers, that is to say the web running section where no pressing takes place, is also problematic.

[0003]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to improve a roller press of the type mentioned at the outset to ensure a higher press output, i.e. a higher dewatering power or dewatering capacity, with minimum space requirements. Is to provide a roller press that can do this.

[0004]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention provides a suction press roller or a transfer press roller, and a suction press roller and a transfer press roller for forming at least one additional press gap, respectively. At least one additional press roller is assigned to each press roller, and the press felt is also guided via each additional press roller, and at least one of the additional press gaps is provided. One was a press gap that was extended in the direction of travel of the material web.

[0005]

According to the present invention, an extremely compact roller press having a high press output can be obtained. In the simplest case, a roller arrangement with three press gaps would have only four rollers, i.e. dewatering on both sides in the region of the first press gap between the suction press roller and the associated additional press roller. And at least one side is dewatered in the area of the press gap between the suction press roller and the transfer press roller, and the third press between the transfer press roller and the additional press roller belonging to the transfer press roller is performed.
Can be formed by simply four rollers, which dewater at least one side in the region of the press gap.
In addition, a closed web guide for pre-dewatering the cardboard web or paper web is created from the pick-up point on the crossing to the transfer point. Re-wet (Ruec
On the basis of the fact that kbefeuchtung is reduced to a minimum, a maximum dryness (ie minimum moisture content) can be obtained. Also, any paper elongation has been ruled out based on the absence of an open web path between the roller arrangements. Further wetting strength (Nassfest
igkeit) also does not occur. The first open web path occurs for the first time at the connection to the press arrangement where the maximum wet strength exists. The major advantages of the present invention include the following. That is, the roller press according to the invention results in a significantly higher press output or dewatering output due to the at least one extended additional press clearance, despite a very compact roller arrangement.

In an advantageous embodiment of the invention, at least the additional press gap between the transfer press roller and the additional press roller assigned to the transfer roller is an extended press gap.

In a practically advantageous embodiment of the roller press according to the invention, the suction press roller is in contact with the plow to directly take up the material web via the associated press felt. In this way, the application of the material web is considerably simplified in a very simple construction.

In an advantageous embodiment of the invention, at least one of the additional press rollers has an annular roller periphery, a yoke extending through the roller periphery and at least one hydrostatic and / or hydrodynamic support. And a deflection compensating roller having an element, and the roller peripheral wall is supported by the yoke by the support element.

In a further advantageous embodiment of the invention, the suction press roller, the transfer press roller and the additional press roller are as follows, ie the force of the press gap is short-circuited to one another and the machine foundation and / or Alternatively, it is arranged and / or supported so that it is not received by an external support (Aussenstuhlung) which may be provided.

[0010] In another advantageous embodiment of the invention, the transfer press roller has at least one additional roller configured as a deflection compensating roller in order to form an extended press gap in the direction of travel of the material web with the transfer press roller. A press roller, the press roller comprising a flexible roller peripheral wall, a yoke passing through the flexible roller peripheral wall, and at least one hydrostatic and / or hydrodynamic non-convex support element. It has.

Due to the extended press gap created between the transfer press roller and the associated additional press roller, the dewatering output can be reduced while maintaining a compact roller arrangement with only a few rollers. Optimal conditions are obtained.

In a further advantageous embodiment of the invention, the suction press roller is also provided with at least one deflection compensating roller, in order to form an extended press gap in the direction of travel of the material web with the suction press roller. An additional press roller is assigned, the press roller comprising a flexible roller peripheral wall, a yoke extending through the flexible roller peripheral wall, and at least one hydrostatic and / or hydrodynamic non-convex support element. And With this configuration, further optimization of the dewatering output is achieved.

In a further preferred embodiment of the roller press according to the invention, the transfer press roller comprises an annular roller periphery, a yoke extending through the roller periphery and at least one hydrostatic and / or hydrodynamic support element. A deflection compensating roller having a roller peripheral wall supported by a yoke by a support element.

In another advantageous embodiment of the invention, such a transfer roller configured as a deflection compensating roller has a rigid roller peripheral wall. However, it is also basically possible for the roller to have a flexible peripheral wall.

In a further advantageous embodiment of the invention, the peripheral wall of the transfer press roller, which is designed as a deflection compensating roller, is fixed radially at least at its end during operation. With this arrangement, radial movement during operation can be at least substantially eliminated.
Thus, the position can be maintained even under a press load.

[0016] In particular, the transfer press roller is assigned at least one additional press roller configured as a deflection compensating roller, and if the transfer press roller is a deflection compensating roller, the additional press roller and The hydraulically operated and / or hydraulically operated supporting elements with the transfer press rollers can be hydraulically connected to one another in an advantageous manner. This is advantageous, for example, in connection with position adjustment.

In order to obtain as defined a state as possible,
The transfer press roller is advantageously rigidly mounted on the stand in a defined position without the possibility of radial displacement, and the stand itself is rigidly mounted on the machine foundation.

In a further preferred embodiment of the invention, the transfer press roller is provided with a flexible press roller and / or a suction press roller, in order to form an extended press gap in the direction of travel of the material web. The flexible roller peripheral wall, the yoke penetrating the flexible roller peripheral wall and at least one non-convex support element of the hydrostatic and / or hydrodynamic type are configured as deflection compensating rollers.

Furthermore, if the additional press roller belonging to the transfer press roller is a deflection compensating roller having a flexible roller peripheral wall, it is advantageous if the additional press roller belonging to the transfer press roller and the transfer press roller belong to the transfer press roller. Are designed to be at least substantially flat on the side facing the respective roller peripheral wall in order to form an at least substantially flat pressing gap.

In certain cases, it is advantageous if at least one of the rollers is designed as a deflection compensating roller with a radially displaceable roller peripheral wall. In this case, the corresponding roller peripheral wall is advantageously rigid. However, also in this case, it is possible to use a flexible roller peripheral wall.

In order to obtain as defined a state as possible,
In a further advantageous embodiment of the invention, at least the press gap formed between the transfer press roller and the associated additional press roller is set in operation by a corresponding spatial adjustment by means of a corresponding position adjustment. In another advantageous configuration of the invention, which is held firmly in position, the suction press roller is
This is a hollow roller provided with a roller peripheral wall that is supported on the inside and rotates about a core. In this case,
Advantageously, the suction press roller is provided with an external suction box for suctioning an area located inside the roller.

[0022] Further advantageous embodiments of the invention are described in the further claims.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 schematically shows a roller press of a machine, in particular a paper machine. The roller press has a suction press roller 4 which receives, in particular, a web of material, such as a cardboard web or a paper web A, from the peg 1, which is provided around the suction press roller 4. A guided felt 6 is assigned. The roller press further comprises a transfer press roller 7 which forms a press gap B with the suction press roller 4 and receives the cardboard web or paper web A from the suction press roller 4, the transfer press roller 7 comprising: It serves to deliver web or paper web A to subsequent machine parts.

As can be clearly seen, for example, from FIG. 1, the suction press roller 4 is in contact with the plow net 1 via the associated press felt 6 so that the suction press roller 4 takes over the material web A directly. Has become.

Each of the suction press roller 4 and the transfer press roller 7 has one additional press gap R, S together with the suction press roller 4 or the transfer press roller 7.
Each one additional press roller 1 to form
4:24 are assigned. In this case, the press felts 15,
25 is guided.

The end of the screen part of the paper machine shown in FIG. 1 further has screen rollers 2, 3 through which the screen 1 is guided. I have. In this case, the suction press roller 4 is in contact with the area of the grate 1 guided between the two grate rollers 2, 3 via the associated press felt 6.

The cardboard web or paper web A formed in the screen 1 is lifted from the screen 1 by a press felt 6 and a suction press roller 4 and then successively through three press gaps R, B, S. You will be guided. In this case, in the first press gap R between the suction press roller 4 and the additional press roller 14 belonging thereto, the pressing action of the suction press roller 4 and the pressing of the press felt 15 belonging to the additional press roller 14 are performed. Based on the action, dehydration is performed on both sides. On the other hand, in the press gap B formed between the suction press roller 4 and the transfer press roller 7, simply
Only dehydration on one side based on the suction action of the suction press roller 4 is performed. In the press gap S formed between the transfer press roller 7 and the additional press roller 24 belonging to the transfer press roller, the dewatering on one side is likewise effected again. Is achieved by the press felt 25 belonging to

In the embodiment shown in FIG. 1, the suction press roller 4 is configured as a hollow roller having a rigid roller peripheral wall 30, which may be supported on the inside, and It rotates around the core 32.

In this embodiment, the suction press roller 4 is
An external suction box 34 is provided, and the suction box 34 sucks an area 36 inside the roller.

In the embodiment shown in FIG. 1, both additional press gaps R, S are extended in the direction of travel of the material web A. The same applies to the press gap B between the suction press roller 4 and the transfer press roller 7 in the embodiment shown.

Furthermore, both additional press rollers 14,
24 and the transfer press roller 7 are each provided with a rotating roller peripheral wall 17, 26, 38, a yoke 16 penetrating the roller peripheral wall and at least one hydrostatic and / or hydrodynamic supporting element 1
8, 27, 40, the corresponding roller peripheral walls 17, 26, 38 are supported by the yoke 16 in the respective gap regions by means of support elements 18, 27, 40. The roller peripheral wall 38 of the transfer press roller 7 is thereby supported not only in the region of the press gap S but also via at least one hydrostatic and / or hydrodynamic support element 40 of the suction press roller 4. In the range of the press gap B formed by the above.

An additional press roller 24 configured as a deflection compensating roller and assigned to the transfer press roller 7
Roller peripheral wall 26 is flexible. The hydrostatic and / or hydrodynamic support element 27 assigned to this additional press roller 24, shown in FIG. 1, is not convex on the side assigned to the roller peripheral wall 26, In the illustrated embodiment, it is flat. This is also the case for the hydrostatic and / or hydrodynamic support elements 27 assigned to the transfer press rollers 7 which are located opposite one another. 7 also supports a flexible roller peripheral wall 38 in the illustrated embodiment. This results in a flat press gap S which extends in the direction of travel of the cardboard web or paper web A.
Is produced.

On the other hand, the support element 40 arranged on the side of the transfer press roller 7 opposite to the yoke 16 is provided with a concave pressure-contact surface, and the flexible pressure roller The peripheral wall 38 is pressed against the rigid roller peripheral wall 30 of the suction press roller 4.
In this case, however, a press gap B which extends in the direction of travel of the cardboard web or paper web A is formed.

The additional press roller 14 assigned to the suction press roller 4 likewise has a flexible roller peripheral wall 17 and a yoke 16 passing through the flexible roller peripheral wall 17 and a hydrostatic and / or hydrodynamic type. It is configured as a deflection compensating roller with at least one support element 18 which is not convex. In the exemplary embodiment shown, the support element 18 has a concave crimp surface. This concave pressure-bonding surface is a large part of the entire circumference of the suction press roller 4,
That is, the support element 40 extends over a portion larger than the concave crimping surface. Between the suction press roller 4 and the additional press roller 4 assigned to the suction press roller, a press gap R which extends in the direction of travel of the cardboard web or paper web A is thus formed.

In particular, the additional press roller 24 assigned to the transfer press roller 7 may have a roller peripheral wall with a notch for containing press water. These notches can be provided, for example, in the form of circumferential grooves and / or blind holes.

The yoke 16 of the deflection compensating roller is fixed in position at least during operation. More particularly, the transfer press roller 7 can be provided with a roller peripheral wall which is fixed radially at least at the end during operation.

As shown in FIG. 1, the suction press roller 4, the transfer press roller 7, and the additional press roller 24 assigned to the transfer press roller are located on a straight line. Forms an angle with the plumb line which is, for example, approximately 45 ° in the embodiment shown. An additional press roller 14 assigned to the suction press roller 4 is located at the lower right of the suction press roller 4. The straight line extending through the axis of both rollers 4, 14 is between the straight line extending through the suction press roller 4, the transfer press roller 7 and the additional press roller 24 assigned to the transfer press roller. At right angles.

In the embodiment shown in FIG. 2, the additional press roller 24 assigned to the transfer press roller 7 is arranged directly above the transfer press roller 7, so that it passes through the axes of both rollers. The extending straight line extends in the vertical direction. Otherwise, the roller press shown in FIG. 2 has substantially the same structure as the roller press shown in FIG. Corresponding members have the same reference characters.

FIG. 2 further shows the bearings of the roller.

For example, the transfer press roller 7 is fixedly mounted on a stand 42 at a defined position without the possibility of displacement in the radial direction, and the stand 42 itself is fixedly mounted on a machine base 44.

At least during operation, the peripheral wall of the transfer press roller 7 can be fixed at least approximately radially at its ends, so that the peripheral wall of the transfer press roller 7 remains substantially under a pressing load. Maintain a permanent position.

By adjusting the position, it is possible to ensure that the press gap S is kept at a predetermined position. Therefore, in this position, the press gap S
Is maintained independent of the respective pressing force and the respective machine speed. For this purpose, at least one position sensor and a pressing force adjusting device may be provided for at least one of the support elements.

As can be seen in particular from FIGS. 2 and 3, the rollers 4, 7, 14, 24, which form the three pressing gaps, bear on one another and / or are connected to one another during operation. In effect, the pressing force does not need to be received by other support elements. These pressing forces can then be received only by the associated bearing part which holds the roller journal or roller yoke.

In FIG. 3, the corresponding force transmission paths which occur in the region of the three press points are indicated by solid lines. As can be seen, a closed line of force is created through each press gap, so that relatively high press forces are usually only received by the associated bearing part holding the roller journal or yoke. Is fine. The other support elements therefore need not be designed for these high pressing forces.

The connecting elements provided between these bearing parts can be disengaged for roller exchange or stress exchange.

FIG. 4 shows the roller press shown in FIG. 2 at the stage when the press felt 6 for the suction press roller 4 is replaced. After releasing the connecting elements for the transfer press roller 7 and the additional press roller 14, the press felt 6 is held in a cantilever manner on the guide or operator side by a cantilever holder 46. The cantilever holder 46 is supported on the driving side. The intermediate member 48 shown in FIG. 2 has previously been removed, for which purpose the bearing device located above it is first lifted using a crane.

The press felt 6 previously tensioned via the deflecting roller 50 (see FIG. 2) is partially wrapped around the roller 52 as shown in FIG.

FIG. 5 shows the roller press shown in FIG. 2 at the stage in which the press felt 25 for the additional press roller 24 assigned to the transfer press roller 7 is replaced. Prior to the step, the corresponding intermediate member 48 (see FIG. 2) has been removed.

In order to replace the press felt 25, the connecting elements of the additional press roller 24 for the transfer press roller 7 and for the support on the guide side are first disengaged. Thereafter, the additional press roller 24 is raised by means of a support which can be fixed to the yoke, on which the felt is pre-draped, i.e. hanging.

The press felt 25 previously tensioned via the deflection roller 54 (see FIG. 2)
Is partially wrapped around the roller 56 as shown in FIG.

The frame support (Rahmenstuhlung) is provided exclusively for supporting the felt traveling device and for receiving the weight of the pressing device. Thus, the frame support does not act to receive the pressing force applied to the cardboard or paper web.

The frame support may be integrated into the former and screen part arranged upstream and has a corresponding interrupting device on the guide side for the screen change. You may. In this case, the frame support is held on the guide side by the cantilever holder of the suction press roller 4.

The entire press apparatus does not have a support portion in front of the paper machine at the bottom of the machine, that is, before the machine beam on the guide side where the stand for the transfer press roller and the frame stand are supported. , Are free from such support parts.

As shown in FIG. 6, an additional press roller 14 is used to replace the press felt 15 which is guided around the additional press roller 14.
After the disengagement of the guide-side coupling element for the suction press roller 4 on the guide side,
Is lowered by a support device that can be fixed to the yoke of
This support device is pre-draped with new felt. The support device is, for example, a plug-in tube (Aufste
ckrohr).

For each roller change, the roller press has a crane rail which extends transversely to the paper machine and can at least fulfill the functions described below. desirable.

First, it is desired that the crane rail 58 serves as a running aid for holding the driving-side end of the suction press roller 4. In addition, the crane rail 58 is also used as a running aid for holding the drive-side end of the felt running device for the press felt 6 assigned to the suction press roller 4. And finally, this crane rail 58
Can also serve as a run-in aid for holding the drive-side end of the felt entry device for the press felt 25 in this case via the felt entry device for the press felt 25 to the transfer press roller 7. Additional press rollers 24
Is being guided.

The roller press according to the invention has the following advantages in particular: The roller press according to the invention produces a closed web guide from the grate-side receiving point to the end of the press. It is tightened. Overall rewetting is slightly reduced, which results in maximum dryness. Due to the absence of an open web run during the press, no paper stretching occurs and no loss of wet strength (Nassfestigkeit). The first open web run is located after the press at maximum wet strength. Due to the fact that there is only one transfer point behind the pressed part, maximum wet strength is guaranteed.

A constant paper width can be ensured by all press gaps or nips, even when the product width changes. The variable edge strip ends at the center roller. It is also important that the felt and the rollers can always be run with the same paper width. The desired high dryness can be obtained, in particular, with only one shoe press, whereby the number of rollers is reduced.

In addition, a very compact construction is obtained, which is advantageous not only for saving the required space but also for making the modification without any problems.

For all nips, a direct force transmission path is obtained. The portal support is omitted. On the guide side, no stand located outside is provided. Greater free space is obtained in front of the machine. Also, there is no load on the cover.

Furthermore, good accessibility is provided by the bridge support. Each felt exchange and roller exchange are possible without problem. Furthermore, good accessibility for adjustment, maintenance and cleaning operations is also obtained.

In the absence of a cross beam above the press, an optimal nip arrangement is created as a 4-roller-Nipco-Flex-Combipresse.

A central roller (Nipco-
P-Walze produces a fixed web running geometry behind the press if this roller is mounted on a stand. Further, a position-stable scraper configuration is possible. Configurations such as the present invention are also insensitive to drive vibrations.

Furthermore, in the mounting position as in the present invention, high operational reliability for each shoe press is obtained. The risk of bird eye spotting due to closed web movement (Batzengefahr) is also reduced. Manual work (using glass tubes) requires pre-calibration (Vorkalibrier
as well as two nips for ung) are omitted. In the inverted shoe arrangement (invertierte Schuhanordnung), optimal press wall lubrication is achieved.

In the roller press according to the present invention, roller exchange can be performed relatively easily despite the compact structure. The press rollers can be changed independently of one another in a short time. It is possible to provide a run-out device for all press rollers. The use of the crane is short. However, it is also possible to change the rollers without a crane, for example via rails in front of the machine.

The press felt assigned to the suction press roller can be completely cantilevered.
The felt can be changed without any problem via the felt changing and running device.

The upper felt (Oberfilz) is movable by means of a press peripheral wall changing device. Similarly, a felt exchange running device may be provided.

The lower felt (Unterfilz) is mobile (insertion tube at Nipco-Joch). A runnable felt guide roller located inside may be provided.

Further, a scan pro measurement (Scanpro-Mess
improved accessibility is also obtained due to ungen).

Furthermore, an inexpensive press concept can be obtained as a whole. Separate Nipco Flex-Press (Nipco
Since there is no Flex-Pressse, only a few reserve rollers are needed. Also, due to the small space requirement, the construction cost is also reduced.

[Brief description of the drawings]

FIG. 1 is a simplified partial view of one embodiment of a roller press.

FIG. 2 is a simplified view of another embodiment of the roller press.

FIG. 3 is a view partially showing the roller press shown in FIG. 2 together with a force transmission path in a gap region.

4 shows the roller press shown in FIG. 2 at the stage when the press felt for the suction press roller is changed.

FIG. 5 shows the roller press shown in FIG. 2 at the stage in which the press felt for an additional press roller assigned to the transfer press roller is changed.

FIG. 6 shows the roller press shown in FIG. 2 at the stage in which the press felt for the additional press roller assigned to the suction press roller is changed.

[Explanation of symbols]

1 Drill net, 2,3 Drill roller, 4 Suction press roller, 6,15,25 Press felt, 7
Delivery press roller, 14,24 press roller,
16 yoke, 17, 26, 38 roller peripheral wall,
18, 27, 40 support element, 30 roller peripheral wall, 32 core, 34 suction box, 3
6 areas, 42 stands, 44 machine foundations, 4
6 cantilever holder, 48 intermediate member, 50 deflection roller, 52 roller, 54 deflection roller, 5
6 rollers, 58 crane rails, A paper web, B press clearance, R, S additional press clearance

Claims (25)

[Claims] 1. A roller press for a machine, in particular a paper machine, in particular a suction press roller (4) for receiving a material web (A), such as a cardboard web or a paper web, from a screen (1) or the like. ), And a press felt (6) guided around the suction press roller (4) by the suction press roller (4).
And a transfer press roller (7), which forms a press gap (B) with the suction press roller (4) and receives the material web (A) from the suction press roller (4), transfers the material web (A). Of the type provided for transfer to a subsequent machine part, for forming at least one additional press gap (R, S) with the suction press roller (4) or the transfer press roller (7), respectively. The suction press roller (4) and the transfer press roller (7) are each assigned at least one additional press roller (14, 24), and each additional press roller (14, 24).
Press felts (15, 25) are likewise guided via 24), and are preferably provided with additional press clearances (R,
Roller press, characterized in that at least one of S) is a press gap that is extended in the direction of travel of the material web (A). 2. At least a delivery press roller (7)
And an additional press roller (2
4. The roller press according to claim 1, wherein the additional press gap (S) between the roller press and the roller press (4) is an extended press gap. 3. A suction press roller (4) is in contact with the plow mesh (1) via an associated press felt (6) and is adapted to directly take up the material web (A). The roller press according to claim 1. 4. A suction press roller (4), a transfer press roller (7) and additional press rollers (14, 24).
In such a way that the forces of the press gaps (R, B, S) are short-circuited to one another and are not received by the machine foundation and / or any external supports provided. 4. The roller press as claimed in claim 1, wherein the roller is pressed and / or supported. 5. At least one of the additional press rollers (14, 24) has an annular roller peripheral wall (17, 2).
6) and a yoke (16) penetrating the roller peripheral wall (17, 26) and at least one hydrostatic and / or hydrodynamic support element (1).
8, 27), and the roller peripheral wall (17, 2) is supported by the support element (18, 27).
5. The roller press according to claim 1, wherein 6) is supported by a yoke. 6. The transfer press roller (7) for forming an extended press gap (S) in the running direction of the material web (A) together with the transfer press roller (7).
At least one additional press roller (24), which is configured as a deflection compensating roller, is arranged on the flexible roller peripheral wall (2).
6), a yoke (16) passing through said flexible roller peripheral wall (26) and at least one non-convex support element (27) of the hydrostatic and / or hydrodynamic type. Roller press as described. 7. The suction press roller (4) for forming an extended press gap (R) in the running direction of the material web (A) together with the suction press roller (4).
At least one additional press roller (14), which is configured as a deflection compensating roller, is arranged on the flexible roller peripheral wall (1).
7) a yoke (16) extending through said flexible roller peripheral wall (17) and at least one non-convex support element (18) of the hydrostatic and / or hydrodynamic type. Or the roller press according to 6. 8. The transfer press roller (7) is assigned at least one additional press roller (24), which is configured as a deflection compensating roller, said press roller (24) being a rigid roller peripheral wall (26). The roller press according to any one of claims 1 to 7, comprising: 9. The suction press roller (4) is assigned at least one additional press roller (14), which is configured as a deflection compensating roller, said press roller (14) being a rigid roller peripheral wall (17). 9. The roller press according to claim 1, wherein the roller press comprises: 10. The roller press according to claim 1, wherein the roller peripheral wall of the at least one deflection compensating roller is provided with a notch for receiving press water in a corresponding press gap. . 11. A transfer press roller (7) comprising an annular roller peripheral wall (38), a yoke (16) passing through said roller peripheral wall and at least one hydrostatic and / or hydrodynamic support element (2).
11. The deflection compensating roller according to claim 1, wherein the roller circumferential wall (38) is supported on the yoke (16) by a support element (27, 40). Roller press. 12. The roller press according to claim 11, wherein the transfer press roller (7) configured as a deflection compensating roller has a rigid roller peripheral wall (38). 13. The roller according to claim 11, wherein the roller peripheral wall (38) of the transfer press roller (7) configured as a deflection compensating roller is fixed radially at least at its end during operation. press. 14. The transfer press roller (7) is assigned at least one additional press roller (24) configured as a deflection compensating roller, wherein the transfer press roller (7) is a deflection compensating roller; A hydraulically operated hydrostatic and / or additional press roller (24) and a transfer press roller (7)
Or hydrodynamic support elements (27)
The roller press according to claim 14, wherein the rollers are hydraulically connected to each other. 15. The transfer press roller (7) is preferably rotatably mounted on a stand (42), at which the transfer press roller (7) is mounted.
15. The roller according to claim 1, wherein the stand is fixed in a defined position without the possibility of radial displacement and the stand itself is rigidly mounted on the machine foundation. press. 16. An associated additional press roller (24).
And / or a press gap (R) extended with the suction press roller (4) in the direction of travel of the material web (A)
The transfer press roller (7) includes at least one of a flexible roller peripheral wall (38), a yoke (16) penetrating the flexible roller peripheral wall (38), and a hydrostatic and / or hydrodynamic type. Three non-convex support elements (27, 4
0), wherein the deflection compensating roller comprises:
The roller press according to any one of the preceding claims. 17. The additional press roller (24) belonging to the transfer press roller (7) is a deflection compensating roller with a flexible roller peripheral wall (26), the additional press roller belonging to the transfer press roller (7). Press roller (2
4) The support element (27) with at least approximately flat on the side facing the corresponding roller peripheral wall (26) to form an at least approximately flat pressing gap (S). 16. The roller press according to item 16. 18. The roller press according to claim 1, wherein at least one of the rollers is configured as a deflection compensating roller with a radially shiftable roller peripheral wall. 19. At least a press gap (S) formed between the transfer press roller (7) and the associated additional press roller (24) is defined during operation by a corresponding position adjustment. 19. The roller press according to claim 1, wherein the roller press is held firmly in a spatial position. 20. A suction roller according to claim 1, wherein the suction press roller (4) is a hollow roller with a roller peripheral wall (30) supported on the inside and rotating about a core (32). Or the roller press according to claim 1. 21. The roller according to claim 1, wherein the suction press roller (4) comprises an external suction box (34) for suctioning an area (36) located inside the roller. press. 22. A felt-exchange run-in device is respectively provided for exchanging at least one of the press felts (6, 15, 25).
The roller press according to any one of the above. 23. Cantilever holder (46) for holding the press felt (6) in a cantilever manner in order to replace the press felt (6) for the suction press roller (4).
23. Any one of claims 1 to 22, wherein
Roller press described in the item. 24. In order to replace the press felt (25) for an additional press roller (24) belonging to the transfer press roller (7), this additional press roller (24) (24) Yoke (16)
1 to 2 wherein the press felt (25) can be lifted by a support device which can be fixed to the device, and the press felt (25) can be pre-draped or hung around the support device.
4. The roller press according to any one of 3 to 3. 25. In order to replace the press felt (15) for the additional press roller (14) belonging to the suction press roller (4), this additional press roller (14) The support, acting in particular on the yoke (6) of (14), can be lowered by means of a bayonet tube or the like, around which the press felt (15) can be pre-draped or hung. Any one of claims 1 to 23
Roller press described in the item.