EP0839952B1 - Schuhpresse - Google Patents
Schuhpresse Download PDFInfo
- Publication number
- EP0839952B1 EP0839952B1 EP97116138A EP97116138A EP0839952B1 EP 0839952 B1 EP0839952 B1 EP 0839952B1 EP 97116138 A EP97116138 A EP 97116138A EP 97116138 A EP97116138 A EP 97116138A EP 0839952 B1 EP0839952 B1 EP 0839952B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shoe
- press according
- shoe press
- roll
- press
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/0209—Wet presses with extended press nip
- D21F3/0218—Shoe presses
- D21F3/0227—Belts or sleeves therefor
- D21F3/0245—Means for fixing the sleeve to the roller end
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/0209—Wet presses with extended press nip
- D21F3/0218—Shoe presses
Definitions
- the present invention relates to a shoe press, in particular for a paper machine, with at least one roller, the one flexible around a stationary carrier Roll shell and at least one a support surface for the Includes inside of the roll shell shoe.
- the shoe presses of the type mentioned are flexible Roll shell usually through the concave inwards bent press shoe pressed against a rigid counter roll. This creates a press nip between the press roll and the counter roll, a certain length in the feed direction of the material to be pressed, so-called press zone length. The longer this press zone is, the larger the at the same contact pressure of the Press shoe placed on the material to be pressed.
- the Contact pressure of the press shoe can be in the feed direction the press zone can also be different, i.e. gradients exhibit.
- the invention has for its object a shoe press of the type mentioned in such a way that this Disadvantages do not occur.
- an extension is intended the press zone without damaging the flexible Roll jacket are made possible.
- the support surface of the Shoe is essentially flat that the shoe to form a press nip with a second, itself a supportive shoe cooperates, which also has a substantially flat support surface, the substantially parallel to the support surface of the first shoe runs and supports an endlessly circulating band, and that at least one of the two shoes against the other shoe can be pressed.
- the immersion depth of the flexible roll shell advantageously on the Half reduced.
- the press shoe and thus the press zone length can clearly be compared to conventional shoe presses be enlarged without the risk of damage to the coat Alternating bending deformations exist during the operation of the shoe press.
- the inventive design of the shoe press can press zone lengths of 500 mm, for example can be achieved with a roll diameter of 1500 mm, or generally, a ratio of press zone length to roll shell circumference greater than 0.07.
- the shoe press according to the invention thus enables one high press pulse with low maximum pressure and low pressure gradient over the press length. hereby can be particularly gentle drainage of paper webs can be achieved because the surface layers are less be compacted and thereby drainage overall is facilitated. These advantages are both graphic Paper machines as well as machines for cardboard and Packaging papers can be used.
- the shoe press according to the invention can be designed the invention in addition to the roller-shaped shoe press unit a second shoe press unit with the press jacket closed on the side with a side open, from the second shoe have supported press belt, which in a known manner is guided over pulleys.
- the width of the press belt is preferably narrower than the width of the Roller jacket of the roller-shaped shoe press unit.
- At least at least one axial end region of the roll shell a roller over a radially flexible side plate on the Carrier of the associated roller rotatably mounted.
- the flexible side plate can according to an embodiment of the Invention as a rim with a flexible, in particular compressed air-filled Hose be formed. This is constructive inexpensive and also allows adjustment of flexibility.
- At least a shoe opposite the assigned wearer in particular hydraulically, radially adjustable. This can advantageously according to a further embodiment of the invention a deflection of the associated carrier when operating the Roller to be compensated.
- the radial adjustability of the shoe builds up a contact pressure his. This advantageously makes it self-stressing Shoe press created that have no external resources required to generate a contact pressure.
- the contact pressure can according to a further embodiment Invention in the direction of passage of the pressed material by the Press nip and / or transversely adjustable to this his. This can advantageously in both directions Pressure profiles can be set to the pressing process optimize.
- the shoe press according to the invention is preferably designed such that that a contact pressure can be built up in both shoe press units is, in at least one shoe press unit at least one point a firm connection between the shoe and assigned carrier is provided to the position of the press nip to define in the direction of the press plane.
- a felt belt can be used in the shoe press according to the invention carried on both sides of the material to be pressed through the press nip be, as only on one side.
- it is preferably a scraper is provided which touches the material to be pressed The surface of the roll shell or endless belt is scraped. Adhesive material particles can thereby be removed and the touched surface should be kept clean.
- Support device provided for support the scraper is facing away from it
- One side of the roll shell or endless belt is preferred Support device provided.
- closed shoe press unit with a hydrostatic Equipped with shoe lubrication.
- the friction between the press shoe and roller jacket can advantageously be small being held.
- With the open shoe press unit in contrast, preferably lubricated with water.
- the shoe press shown in FIGS. 1 and 2 comprises a Press roll 1 with a rotating around a stationary support 2 flexible roll shell 3 and a flat support surface 4 for the inside 5 of the roll shell 3 first shoe 6.
- the first shoe 6 of the roller 1 cooperates a second, also having a flat support surface 7 Shoe 8 together, one around a stationary Carrier 9 rotating flexible roll jacket 10 of a second Roller 11 supports.
- the support surfaces 4 and 7 of the two shoes 6 and 8 run essentially parallel to one another.
- the two roller shells 3 and 10 of the two rollers 1 and 11 also substantially the same wide.
- the rim 14, 15 is rotatably mounted on the stationary support 2, while the hose 16, 17 with the roll shell 3 firmly connected, in particular glued. That way radial support of the axial end regions of the roll shell 3 achieved with radial compliance.
- the roller 11 can be designed accordingly.
- the two shoes 6 and 8 of the two rollers 1 and 11 are each with respect to the assigned stationary carrier 2 or 9 radially adjustable, as indicated by arrows 18 and 19 is. Only roller 1 is preferred Pressure control means equipped, while the Roller 11 only with means to compensate for deflection of the stationary support 9 by radial adjustment of the Shoe 8 is equipped. The roller 1 is therefore self-stressing Press roll formed while the roll 11 does this serves as a counter roll, the shoe 8 at least on one Place is rigidly connected to the stationary support 9.
- Press nip 20 By the between the two shoes 6 and 8 formed Press nip 20 is in the illustrated embodiment a paper web 21 and on the roller 1 facing On the side of the paper web 21, a felt belt 22 is guided. On the opposite side of the paper web 21, however, is not Felt tape provided. The roll shell 10 of the roll 11 is therefore touched paper. To keep the roll shell 10 clean a scraper (not shown here) can be provided, who scrapes and prefers the outer surface of the roll shell 10 through one on the opposite side of the roll shell 11 provided device, also not shown is supported.
- a scraper (not shown here) can be provided, who scrapes and prefers the outer surface of the roll shell 10 through one on the opposite side of the roll shell 11 provided device, also not shown is supported.
- Shoe press is a closed shoe press unit with a roller 30 and a shoe 31 provided with a open shoe press unit 32 cooperates.
- the open shoe press unit 32 comprises an endless belt 33 which over pulleys 34 is guided, and a second shoe 35, which with the shoe 31 of the roller 30 to form a press nip 36 interacts.
- the support surfaces 37, 38 are two shoes 31 and 35 substantially flat and parallel trained to each other. While the shoes 31 and 35 also have essentially the same dimensions the width of the roll shell 39 measured in the axial direction the roller 30 larger than that of the endless belt 33.
- the two are also in the variant shown in FIG. 3 Shoes 31 and 35 preferably towards the press nip 36 adjustable, one of the two shoes for contact pressure regulation can be used while the other shoe only a deflection compensation of the assigned Carrier causes.
- the shoe press shown in Figure 4 largely corresponds the shoe press of Figures 1 and 2, but here the width of the lower roll shell 3 is larger than that of the upper roll shell 10.
- the side shields 41 of the lower Roller 1 can therefore be different from the variant of Figures 1 and 2 be rigid.
- shoe 42 of the upper roller 11 is not radially movable, but instead is curved in the axial direction towards the lower roller 1.
- the curvature ⁇ h 1 of the shoe 42 between the side edge and the center preferably corresponds to the deflection ⁇ h 2 of the carrier 9 of the upper roller 11 under operating load, which is thereby at least largely compensated for.
- the contact pressure can be applied to all of the variants shown here both in the direction in which the material to be pressed passes through the press nip 20 or 36 and crosswise differently adjustable his.
- Each shoe press unit can also do more than one Show shoe.
- the shoes preferably have a length of more than 300 mm to a high pressing pulse at the same time low maximum pressure and preferably low pressure gradient to effect.
- With the closed shoe press units is the ratio of the press nip length L to the circumference of the roll shell preferably greater than 0.07.
- the closed shoe press units 1, 11, 30 are also preferably hydrostatic lubricated while the open shoe press unit 32 is preferably lubricated with water.
- the design of the shoe press according to the invention enabled long press zone causes a large increase in Dry content with gentle drainage, for example of paper webs, due to the possible high Press pulse with low maximum pressure and low Pressure gradient.
- the increasing requirements for dry content, Smoothness, volume etc. can be achieved with the invention Shoe press can be fulfilled in an excellent way.
Landscapes
- Paper (AREA)
Description
- Fig. 1
- einen Querschnitt durch eine erfindungsgemäße Schuhpresse,
- Fig. 2
- eine teilweise geschnittene Ansicht einer Längsseite der Schuhpresse von Fig. 1,
- Fig. 3
- einen Querschnitt durch eine Variante der erfindungsgemäßen Schuhpresse, und
- Fig. 4
- einen Längsschnitt durch eine weitere Variante der erfindungsgemäßen Schuhpresse.
- 1
- Walze
- 2
- Träger
- 3
- Walzenmantel
- 4
- Stützfläche
- 5
- Walzenmantelinnenseite
- 6
- Schuh
- 7
- Stützfläche
- 8
- Schuh
- 9
- Träger
- 10
- Walzenmantel
- 11
- Walze
- 12
- Seitenschild
- 13
- Seitenschild
- 14
- Felge
- 15
- Felge
- 16
- Schlauch
- 17
- Schlauch
- 18
- Pfeil
- 19
- Pfeil
- 20
- Preßspalt
- 21
- Papierbahn
- 22
- Filzband
- 30
- Walze
- 31
- Schuh
- 32
- offene Schuhpreßeinheit
- 33
- Endlosband
- 34
- Umlenkrolle
- 35
- Schuh
- 36
- Preßspalt
- 37
- Stützfläche
- 38
- Stützfläche
- 39
- Walzenmantel
- 40
- Träger
- 41
- Seitenschild
- 42
- Schuh
- Δh1
- Wölbung
- Δh2
- Durchbiegung
- I
- Achsrichtung
Claims (23)
- Schuhpresse, insbesondere für eine Papiermaschine, mit mindestens einer Walze (1), die einen um einen stationären Träger (2) umlaufenden flexiblen Walzenmantel (3) und mindestens einen eine Stützfläche (4) für die Innenseite (5) des Walzenmantels (3) aufweisenden Schuh (6) umfaßt,
dadurch gekennzeichnet, daß die Stützfläche (4) des Schuhs (6) im wesentlichen eben ausgebildet ist, daß der Schuh (6) zur Bildung eines Preßspalts (20) mit einem zweiten, sich an einem Träger (9) abstützenden Schuh (8) zusammenwirkt, der gleichfalls eine im wesentlichen ebene Stützfläche (7) aufweist, die zu der Stützfläche (4) des ersten Schuhs (6) im wesentlichen parallel verläuft und ein endlos umlaufendes Band (10) stütz, daß mindestens einer der beiden Schuhe (6, 8) gegen den anderen Schuh anpreßbar ist, daß die Schuhe (6, 8) eine Länge von mehr als 300 mm aufweisen, und daß das Verhältnis von Preßspaltlänge (L) zu Walzenmantelumfang größer als 0,07 ist. - Schuhpresse nach Anspruch 1,
dadurch gekennzeichnet, daß das vom zweiten Schuh (35) gestützte Endlosband (33) zur Bildung einer offenen Schuhpreßeinheit (32) über Umlenkrollen (34) geführt ist. - Schuhpresse nach Anspruch 2,
dadurch gekennzeichnet, daß das vom zweiten Schuh (35) gestützte Endlosband (33) schmaler ausgebildet ist als der Walzenmantel (39) der Walze (30). - Schuhpresse nach Anspruch 1,
dadurch gekennzeichnet, daß das vom zweiten Schuh (8) gestützte Endlosband als Walzenmantel (10) einer zweiten Walze (11) ausgebildet ist. - Schuhpresse nach Anspruch 4,
dadurch gekennzeichnet, daß die Walzenmäntel (3, 10) der beiden Walzen (1, 11) im wesentlichen gleich breit sind. - Schuhpresse nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß mindestens ein axialer Endbereich des Walzenmantels (3) mindestens einer Walze (1) über einen radial flexiblen Seitenschild (12, 13) auf dem Träger (2) der zugeordneten Walze (1) drehbar gelagert ist. - Schuhpresse nach Anspruch 6,
dadurch gekennzeichnet, daß der radial flexible Seitenschild (12, 13) als Felge (14, 15) mit flexiblem, insbesondere preßluftgefülltem Schlauch (16, 17) ausgebildet ist. - Schuhpresse nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß mindestens ein Schuh (6, 8) gegenüber dem zugeordneten Träger (2, 9) radial, insbesondere hydraulisch, verstellbar ist. - Schuhpresse nach Anspruch 8,
dadurch gekennzeichnet, daß über die radiale Verstellbarkeit des Schuhs (6, 8) eine Durchbiegung des zugeordneten Trägers (2, 9) ausgleichbar ist. - Schuhpresse nach Anspruch 8 oder 9,
dadurch gekennzeichnet, daß über die radiale Verstellbarkeit des Schuhs (6) ein Anpreßdruck aufbaubar ist. - Schuhpresse nach Anspruch 10,
dadurch gekennzeichnet, daß der Anpreßdruck in Durchtrittsrichtung des Preßguts (21) durch den Preßspalt (20) und/oder quer hierzu unterschiedlich einstellbar ist. - Schuhpresse nach Anspruch 10 oder 11,
dadurch gekennzeichnet, daß nur in einer der beiden Schuhpreßeinheiten (1, 11) ein Anpreßdruck aufbaubar ist, während in der zweiten Schuhpreßeinheit an mindestens einer Stelle eine feste Verbindung zwischen Schuh (6) und zugeordnetem Träger (2) vorgesehen ist. - Schuhpresse nach einem der Ansprüche 8 bis 12,
dadurch gekennzeichnet, daß der eine Schuh (6) radial verstellbar ist, während der andere Schuhe (42) in Achsrichtung (I) in Richtung auf den anderen Schuh (6) gewölbt ist. - Schuhpresse nach Anspruch 13,
dadurch gekennzeichnet, daß die Höhe (Δh1) der Wölbung in der axialen Mitte des Schuhs (42) zumindest annähernd der Durchbiegung (Δh2) des zugeordneten stationären Trägers (9) bei Betriebslinienkraft entspricht. - Schuhpresse nach Anspruch 13,
dadurch gekennzeichnet, daß die Höhe (Δh1) der Wölbung ca. 40 bis 120 % der Durchbiegung (Δh2) des zugeordneten Trägers bei maximaler Konstruktionslinienkraft beträgt. - Schuhpresse nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß beidseits des durch den Preßspalt (20) geführten Preßguts (21) ein Filzband (22) mitgeführt ist. - Schuhpresse nach einem der Ansprüche 1 bis 15
dadurch gekennzeichnet, daß nur auf einer Seite des durch den Preßspalt (20) geführten Preßguts (21) ein Filzband (22) mitgeführt ist. - Schuhpresse nach Anspruch 17,
dadurch gekennzeichnet, daß
ein Schaber vorgesehen ist, welcher die preßgutberührte Oberfläche des Walzenmantels (10) bzw. Endlosbandes (33) beschabt. - Schuhpresse nach Anspruch 18,
dadurch gekennzeichnet, daß auf der dem Schaber abgewandten Seite des Walzenmantels (10) bzw. Endlosbandes (33) eine Abstützeinrichtung für den Schaber vorgesehen ist. - Schuhpresse nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Walzen (1, 11, 30) mit einer hydrostatischen Schuhschmierung ausgerüstet sind. - Schuhpresse nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die offene Schuhpreßeinheit (32) mit Wasser geschmiert ist. - Schuhpresse nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß mindestens ein Walzenmantel exzentrisch zu dem zugehörigen Träger gelagert ist. - Schuhpresse nach Anspruch 22,
dadurch gekennzeichnet, daß die Drehachse des Walzenmantels radial zur Preßzone hin verschoben ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19644108 | 1996-10-31 | ||
DE19644108A DE19644108A1 (de) | 1996-10-31 | 1996-10-31 | Schuhpresse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0839952A1 EP0839952A1 (de) | 1998-05-06 |
EP0839952B1 true EP0839952B1 (de) | 2002-12-04 |
Family
ID=7809802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97116138A Expired - Lifetime EP0839952B1 (de) | 1996-10-31 | 1997-09-17 | Schuhpresse |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0839952B1 (de) |
JP (1) | JPH10131075A (de) |
CA (1) | CA2219688A1 (de) |
DE (2) | DE19644108A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19934875A1 (de) * | 1999-07-24 | 2001-01-25 | Voith Paper Patent Gmbh | Papiermaschine |
DE10132652A1 (de) * | 2001-07-05 | 2003-01-16 | Voith Paper Patent Gmbh | Pressenanordnung |
JP3875898B2 (ja) | 2002-02-06 | 2007-01-31 | イチカワ株式会社 | 抄紙機のシュープレス装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3804707A (en) * | 1972-03-08 | 1974-04-16 | Beloit Corp | Papermaking press with inflatable rolls having thin deformable outer shells |
FI820642L (fi) * | 1981-04-30 | 1982-10-31 | Beloit Corp | Press med foerlaengt nyp |
DE3126492C2 (de) * | 1981-06-30 | 1983-10-20 | Escher Wyss AG, Zürich | Preßwalze |
DE3338487A1 (de) * | 1983-10-22 | 1985-05-02 | Sulzer-Escher Wyss GmbH, 7980 Ravensburg | Presswalze |
DE4017433A1 (de) * | 1989-10-11 | 1991-04-25 | Escher Wyss Gmbh | Walzenpresse |
DE4423694C2 (de) * | 1994-07-06 | 2000-03-16 | Voith Sulzer Papiermasch Gmbh | Langspaltpresse |
DE19638689A1 (de) * | 1996-09-20 | 1998-03-26 | Voith Sulzer Papiermasch Gmbh | Preßvorrichtung zur Behandlung einer Matrialbahn |
DE29622025U1 (de) * | 1996-10-16 | 1997-03-27 | Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim | Preßvorrichtung |
-
1996
- 1996-10-31 DE DE19644108A patent/DE19644108A1/de not_active Withdrawn
-
1997
- 1997-09-17 DE DE59708880T patent/DE59708880D1/de not_active Expired - Fee Related
- 1997-09-17 EP EP97116138A patent/EP0839952B1/de not_active Expired - Lifetime
- 1997-10-28 JP JP9295436A patent/JPH10131075A/ja active Pending
- 1997-10-30 CA CA002219688A patent/CA2219688A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
DE19644108A1 (de) | 1998-05-07 |
JPH10131075A (ja) | 1998-05-19 |
DE59708880D1 (de) | 2003-01-16 |
EP0839952A1 (de) | 1998-05-06 |
CA2219688A1 (en) | 1998-04-30 |
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