CN1409785A - Press device having extended press nip for pressing travelling paperboard web - Google Patents
Press device having extended press nip for pressing travelling paperboard web Download PDFInfo
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- CN1409785A CN1409785A CN00816942.XA CN00816942A CN1409785A CN 1409785 A CN1409785 A CN 1409785A CN 00816942 A CN00816942 A CN 00816942A CN 1409785 A CN1409785 A CN 1409785A
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- pressure cylinder
- press
- shoe
- pressing device
- stroke length
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- 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
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- Advancing Webs (AREA)
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
Abstract
A press device having an extended nip comprising a press shoe (101) aligned across the machine direction (MD) and a support (105) which supports the press shoe via a plurality of loading cylinders (106) along the press shoe (101) in order to enable application of pressure on the web during the pressing. The loading cylinders (106) comprise a first cylinder member (107) attached to or integrated in the press shoe (101), and a second cylinder member (109) attached to or integrated in the support (105). The cylinder members (107, 109) are slidably connected by a connecting member (111), wherein the connecting member (111) and the first cylinder member (107) are movable in relation to each other with a first length of stroke (L1), while the connecting member (111) and the second cylinder member (109) are movable in relation to each other with a second length of stroke (L2), and the connecting member has a third length (L3). Thereby, the first length of stroke (L1) is smaller than the second length (L2) of stroke. The shoe press device can particularly advantageously be utilised for wet-pressing or calendering of paper or paperboard webs.
Description
Technical field
The present invention relates to have the extended press crack and be used for squeezing the paper web of advancing or the pressing device of board web.More specifically, the present invention relates to shoe press apparatus (shoe press), it comprises a supporter, and this supporter is used for supporting and a counter roll or the adjacent press shoe (press shoe) of another support component that this press shoe and support component form an extended press crack between them; Comprise that also hydraulic pressure or pneumatic means come towards support component press shoe to be exerted pressure, pressure is applied on the paper web during by press nip with convenient paper web.
Be particularly suitable for the wet pressing of wet web or board web according to pressing device of the present invention, but also be used in the operation of finishing of calendering or other dry-web or board web.Other fiber webs that also can be used for being different from paper and cardboard according to pressing device of the present invention.
Background of invention
For a long time, shoe press apparatus promptly has the pressing device in extended press crack, has been used in paper and the cardboard of producing different brackets, be mainly used in order to increase the wet pressing of paper web aridity, also be used in calendering and for the operation of finishing of the surface nature that improves paper web or other physical properties.
Because its longer press nip, the shoe press apparatus that the front has been known provides than the more advantage of conventional roll pressing device, such as higher aridity under identical press nip pressure, or when press nip pressure is low, keep certain aridity page to be carried out the squeezing of milder.
U.S. Patent application US 4,917,768 discloses the known shoe press apparatus in a kind of front, and wherein, press shoe is by spaced apart on the direction across machine direction and be rigidly fixed in tubular sleeve on the supporter and supported.Therefore, these sleeve pipes are received in the cylindrical depression of press shoe, so that the permission press shoe is shifted to counter roll or removed from counter roll, change nip pressure.Disclosed shoe press apparatus is included in that the sleeve pipe upstream and downstream is used to force press shoe opposing counter roll and around the hydraulic actuation device across the axle pivot press shoe of machine, so that change nip pressure in machine direction.Therefore, sleeve pipe is assemblied in the sunk part of press shoe relatively loosely, and elastic sealing element surrounds each sleeve pipe and comes interface between Sealed casing pipe and the described depression.Therefore, US 4,917, and the press shoe of disclosed shoe press apparatus can pivot with respect to supporter in 768 patents, so that change nip pressure on machine direction.
But, have been found that this shoe press apparatus has some problem.This class problem derives from the thermal expansion of press shoe, and this is because moved press shoe and carried paper or board web is passed the fricative heat of being with of squeezer, causes with heat that the hydraulic fluid of the heat of passing the press shoe circulation for different reasons produces.The thermal expansion of press shoe causes across the extension on the direction, and this can cause the crooked tension force in the hydraulic means of supporter and press shoe, and wherein some is not expected.
In European patent EP 0 933 471, disclosed shoe press apparatus has reduced the problem that is produced by the thermal expansion of press shoe, because it has the ability to bear across the relatively large extension of machine direction press shoe, and other distortion of press shoe.The shoe press apparatus of this patent disclosure comprises a press shoe of extending in a lateral direction along the whole width of the width of cloth material that passes pressed zone operation, and by the supporter support and along the pressure cylinder of the isolated a plurality of hinged hydraulic loaded of described press shoe.The work chamber that this on-load pressure cylinder is determined is exerted pressure by hydraulic fluid, thereby make described pressure cylinder force press shoe to leave and press to counter roll or other support components, be carried on the paper web that is passed in the press nip that limits between press shoe and the support component so that pressure is applied to from supporter.Each on-load pressure cylinder comprises the piston element that is arranged in the pressure cylinder element.Or piston or pressure cylinder comprises one or two subelement, this two parts element has first element of contact press shoe and second element fixing with respect to supporter, simultaneously remaining piston or pressure cylinder comprises a coupling.
In according to the preferred embodiment of European patent EP 0 933 471 about shoe press apparatus, described two parts element is made of first and second pressure cylinders, described coupling comprises a piston simultaneously, and this piston is received in described two pressure cylinders slidably.In another scheme, equally also be a preferred embodiment, described two parts element then comprises first and second pistons, described coupling comprises a pressure cylinder that surrounds described two pistons simultaneously.
The coupling of European patent EP 0 933 471 disclosed shoe press apparatus engages at least one element hermetically, therefore when exerting pressure to work chamber when causing that press shoe is pressed to support component, first element is forced to leave from second element at loading direction.In the extension that holds press shoe across machine direction, each coupling engages first and second elements respectively hermetically in order to ensure the on-load pressure cylinder, makes coupling center on and is parallel to the axle of machine direction with respect to first and second elements pivot.Therefore, press shoe is across machine direction thermal expansion freely, and can not cause the bending of any piston and/or the pressure cylinder element of on-load pressure cylinder.
Because the press shoe of disclosed shoe press apparatus can also move or pivots in machine direction with respect to supporter in the European patent EP 0 933 471, this shoe press apparatus also comprises an arresting stop, and it can retrain press shoe in machine direction motion forward.
Condition for the press nip of controlling shoe press apparatus, such as pressure shape (pressure curve) by press nip, usually needing can be in machine direction forward or mobile backward press shoe, so that influence is by the pressure curve of press nip, therefore nip pressure begins to locate the highest in press nip, and lower in the press nip end, vice versa.When by press nip pressure curve being carried out such adjusting, press shoe is followed a curved path in principle, and its center is on the central shaft of counter roll.This can be included on machine direction between the parts in the on-load pressure cylinder,, between a piston and a plurality of pressure cylinder or between a plurality of pistons and pressure cylinder, causes deflection that is.This deflection can produce the power that affacts on pressure cylinder and the press shoe, and these power depend on skew direction on machine direction or against machine direction.If the deflection of Connection Element is to leave from possible arresting stop (press shoe supporter) on direction, and this deflection is enough big, these power will surpass the power that directly affacts on the supporter, cause unstability.If Connection Element tilts in the direction towards the press shoe supporter, will produce direct power towards the press shoe supporter, will increase the stress that affacts on the press shoe supporter.
When paper lumps or analog by mistake enter press nip, can produce similar deflection and on the press shoe supporter, cause stress equally.
Summary of the invention
Therefore, first purpose of the present invention provides one to be had the extended press crack and squeezes the paper of advancing or the pressing device of board web, wherein, press shoe actively or passively can with minimal tilt degree/degree of skewness between the parts that are included in the on-load pressure cylinder around across the imaginary axis tilt/pivot of machine direction, and can not produce any excessive power that directly affacts on the possible press shoe supporter, if power, will make the press shoe instability against machine direction effect (direction of leaving from possible press shoe supporter).
Described according to claim 1, realized first purpose of the present invention by a pressing device, this pressing device comprises: across the press shoe that machine direction is arranged, this press shoe is arranged to cooperate the press nip that forms an extension with support component, is used for during squeezing by described width of cloth material; One supporter, towards the direction of support component by supporting described press shoe in a movable manner along the isolated many on-load pressure cylinders of described press shoe, thereby during squeezing, pressure is applied on the width of cloth material.Each described on-load pressure cylinder comprises: have the first pressure cylinder end and be connected with press shoe or become the whole first pressure cylinder element that is combined in this press shoe, with have the second pressure cylinder end and be connected with supporter or become the whole second pressure cylinder element that is combined in this supporter, the described first and second pressure cylinder elements are connected slidably by Connection Element.This Connection Element and the first pressure cylinder element can relatively move with first stroke length each other, and the Connection Element and the second pressure cylinder element can relatively move with second stroke length each other simultaneously, and Connection Element has one the 3rd length.Therefore, according to the present invention, therefore first stroke length can reach above-mentioned first purpose less than second stroke length.
Other purpose of the present invention can manifest from the following description, and the feature that can reach other purpose simultaneously limits in the dependent claims.
The accompanying drawing summary
Below, describe the present invention with reference to the accompanying drawings, wherein:
Figure 1A is illustrated in the cross sectional representation across machine direction of shoe press apparatus, and wherein the press shoe of this shoe press apparatus attempts to produce the pressure curve by the press nip substantial symmetry in primary importance,
Figure 1B is illustrated in the shoe press apparatus among Figure 1A, and its press shoe moves to second place place, compares with the primary importance place of Figure 1A, and press shoe is just attempting the maximum pressure of pressure curve is transferred to the end of press nip,
Fig. 2 A illustrates the situation that is similar to Figure 1A, but pressing device has the extended press crack according to the preferred embodiments of the present invention, its press shoe with the similar primary importance place of the primary importance shown in Figure 1A,
Fig. 2 B illustrates according to the pressing device of the present invention shown in Fig. 2 A, but its press shoe is initiatively shifted to second place place now, is similar to the second place of Figure 1B,
Fig. 3 summarizes and has shown when the first pressure cylinder element inclination certain angle of on-load pressure cylinder is elongated, belongs to the pressure cylinder element of on-load pressure cylinder of shoe press apparatus and the motion mode of Connection Element.
Fig. 4 summarizes and has shown when the on-load pressure cylinder to tilt as the identical angle of Fig. 3 along with its first pressure cylinder element and when elongated, belongs to according to the pressure cylinder element of the on-load pressure cylinder of pressing device of the present invention and the motion mode of Connection Element.
Detailed description of preferred embodiment
In order to contrast, attached Figure 1A shows from see two kinds of different sectional views of shoe press apparatus across machine direction MD with 1B, and these will go through in the back.
In Fig. 2 A and 2B, be similar to the view of Figure 1A and 1B, but according to the view of the pressing device with extended press crack of the preferred embodiments of the present invention.
Be used for squeezing paper web or board web material in advancing according to pressing device of the present invention, and it comprises and being arranged in across the press shoe on the machine direction MD 101, described press shoe 101 cooperates the press nip 103 that forms an extension with support component 102 during squeezing, so that allow width of cloth material 104 pass through.
Pressing device also comprises a supporter 105, and this supporter 105 is being supported described press shoe towards the direction of support component.Described supporter 105 is applied to pressure on the width of cloth material during squeezing by supporting press shoe along press shoe 101 isolated a plurality of on-load pressure cylinders 106 in transportable mode.
Each described on-load pressure cylinder 106 comprises first pressure cylinder element 107 with first pressure cylinder end 108 and the second pressure cylinder element 109 with second pressure cylinder end 110; The described first pressure cylinder end 108 is connected with press shoe 101 or becomes integral body to be combined in the described press shoe 101, and the described second pressure cylinder end 110 is connected with supporter 105 or becomes integral body to be combined in this supporter 105.
Here Biao Shu " pressure cylinder element " is construed as the functional parts of on-load pressure cylinder, and it can be hydraulic pressure or pneumatic type.The example of " pressure cylinder element " is such as comprising that inside or outside are columniform sleeve pipe basically, this sleeve pipe is open an end at least, basically being columniform solid body or piston, or being columniform depression basically in press shoe or supporter, all is this example.
The first and second pressure cylinder elements 107,109 are connected slidably by Connection Element 111, wherein, this Connection Element 111 and the first pressure cylinder element 107 can relatively move with the first stroke length L1 each other, the Connection Element 111 and the second pressure cylinder element 109 can relatively move with the second stroke length L2 each other simultaneously, and Connection Element has one the 3rd length L 3.
Here Biao Shu " stroke length " is construed as with respect to the described pressure cylinder element maximum length of the pressure cylinder element of displacement second co-operating member slidably.
According to the present invention and preferred embodiment, the first stroke length L1 is less than the second stroke length L2.
According to the pressing device of the concrete preferred embodiment of the present invention, the first stroke length L1 is less than half of the second stroke length L2.
In another preferred embodiment, the 3rd length L 3 greater than the first stroke length L1 also greater than the second stroke length L2, wherein the 3rd length L 3 also particularly advantageously be greater than the first stroke length L1 and the second stroke length L2 and.
Pressing device according to another preferred embodiment of the present invention, Connection Element 111 connects the one 107 and the 2 109 pressure cylinder element with the form of sealing slidably by contact seal 112,113, so that form at least one work chamber 114, supercharging medium in this chamber, as the pressure of hydraulic oil or pressure air can be reduced or increase so that the length of on-load pressure cylinder 106 shorten or increase.Therefore, connection is in this way, promptly during squeezing initiatively or during passive tilt press shoe 101, the central shaft C1 of the first pressure cylinder element 107 and the central shaft C3 of Connection Element 111 each other can relative tilt one angles and with respect to the central shaft C2 of the second pressure cylinder element 109 angle that tilts.In this embodiment, the first stroke length L1, the second stroke length L2, the 3rd length L 3, and the geometric position of contact seal 112,113 adapts to the angle A 2 between the central shaft C2 of the central shaft C3 that minimizes Connection Element in described tilting procedure and the second pressure cylinder element.
Therefore above-mentioned inclination both can be initiatively also can be passive.Seal 112,113 can be patent EP 0 933 471 disclosed types advantageously discussed above.Can see obviously also that from the following description Connection Element can have different geometries.
According to the pressing device of another preferred embodiment of the present invention, specifically shown in Fig. 2 B, press shoe supporter 115 is fixed on the supporter, is received in that press shoe 101 during the squeezing contacts with the press shoe supporter and the power at machine direction MD that stands.In this embodiment, one or several arresting stop 116 is arranged on the first pressure cylinder element 107 and/or the Connection Element 111, so that limit the maximum of the first stroke length L1, and therefore guarantees that less angle A 2 is arranged between central shaft C3 and the C2.In the pressing device shown in Fig. 2 A and 2B, arresting stop 116 is made of an annular element, be threaded in the open end of the first pressure cylinder element 107, and it has the internal diameter slightly littler than the diameter of the first pressure cylinder element, wherein, annular element 116 is used for cooperating with projection seal 112 sealing Connection Element 111.But, also can guess the design that one or more arresting stops of the embodiment of shoe press apparatus also have other to be fit to according to the present invention.In connection with the embodiment, should be noted that in the shoe press apparatus shown in Figure 1A and the 1B, lack arresting stop and limit its maximum corresponding to stroke length L1.
In the pressing device according to another preferred embodiment of the present invention, the first pressure cylinder element 107 comprise one with the 3rd pressure cylinder end 116 of the aforementioned first pressure cylinder end 108 opening opposing, and the second pressure cylinder element 109 comprise one with the 4th pressure cylinder end 117 of the aforementioned second pressure cylinder end 110 opening opposing.In this embodiment, the third and fourth pressure cylinder end 116,117 centers on the respective end of described Connection Element 111 respectively, to form work chamber 114 or several work chamber.Therefore, the preferably columniform basically sleeve pipe of Connection Element 111, its inner part that forms work chamber 114 is shown in Fig. 2 A and 2B.(not shown) in another embodiment, it is solid, columniform body basically that Connection Element can be selected, form work chamber in its each end, wherein, preferably but not necessarily be to be provided with one or several passage between two ends, be used for connecting the pressure between formed several work chamber.
According to the shoe press apparatus of another preferred embodiment (not shown) of the present invention, the first and second pressure cylinder elements are solid, columniform bodies basically, and one end thereof is sealed by Connection Element, so that form work chamber.Therefore, described potted component is arranged on the described Connection Element, so that minimize its inclination/deflection as far as possible according to the present invention.
In another particularly preferred embodiment of the present invention, support component 102 is rotatable counter roll, and flexibility is set to the form of ring for no reason with 118, operation between press shoe 101 and paper web or board web 104 during squeezing.Therefore, flexible band preferably has the shape of sleeve pipe.
The pressing device that has an extended press crack according to the present invention preferably is used in the wet pressing or the calendering of paper or board web.
Below, explain in detail below by example by some advantages that the present invention can reach.
Its press shoe of shoe press apparatus shown in Figure 1A is at the primary importance place, to produce the pressure curve of substantial symmetry by press nip.
Figure 1B shows the shoe press apparatus shown in Figure 1A, but its press shoe is moved to the second place, compares at the primary importance place shown in Figure 1A with press shoe, and it trends towards the maximum pressure value of pressure curve is moved to the end of press nip.Can see obviously that from Figure 1A and 1B the first stroke length L1 of the shoe press apparatus that illustrates is bigger than the second stroke length L2.
Therefore, initiatively press shoe 1 is moved to the second place shown in Figure 1B, be to move end to press nip for maximum pressure with pressure curve, therefore, press shoe 1 and the central shaft c1 that interrelates with the first pressure cylinder element 7 will be along the machine direction MD angle a1 that turns forward with respect to the central shaft c2 of the second pressure cylinder element 9.Relate to this point, should notice the angle shown in the figure, for the sake of clarity, significantly amplified.
Connection Element (piston) 11 is in the inclination towards the direction wide-angle of press shoe supporter 15, can cause during squeezing, making press shoe supporter 15 to stand big stress, owing to produced component, this component can be pressed to the first pressure cylinder element 7, and and other power before machine direction MD points to together, press shoe 1 will be pressed to press shoe supporter 15.
Fig. 2 A and 2B show the pressing device with extended press crack according to the preferred embodiments of the present invention in addition.Its press shoe of pressing device shown in Fig. 2 A is at the primary importance place, and is similar with the primary importance shown in Figure 1A, and simultaneously, its press shoe of the pressing device shown in Fig. 2 B initiatively moves on to second place place, and is similar with the second place of Figure 1B.
In Fig. 2 B, the press shoe 101 press shoe shown in Figure 1B 1 is the same as the approximately uniform angle that tilts on one's own initiative, so that make end in press nip than obtaining higher nip pressure at section start.Therefore, the angle A 1 between the central shaft C2 of the central shaft C1 of the first pressure cylinder element 107 and the second pressure cylinder element 109 is close big with angle a1 among Figure 1B.The result that the different piece of on-load pressure cylinder 106 is set according to the present invention is, angle A 2 between the central shaft C2 of the central shaft C3 of Connection Element 111 and the second pressure cylinder element 109, angle a2 with respect between central shaft c2 shown in Figure 1B and the c3 significantly diminishes now.From top embodiment, those skilled in the art obviously can find, by mode of the present invention, minimize, promptly reduce or even eliminate angle A 2, just can reach reduce or even eliminate and derive from the component of the supercharging of work chamber 114 at machine direction MD, this component is born by the press shoe on the press shoe supporter 118 101.
Fig. 3 summarize shown when the on-load pressure cylinder along with its first pressure cylinder element inclination certain angle when elongated, belong to the pressure cylinder element 7 ', 9 ' and the motion mode of Connection Element 11 ' of the on-load pressure cylinder 6 ' of shoe press apparatus.
On the contrary, Fig. 4 summarizes and has shown when the on-load pressure cylinder to tilt as the identical angle of Fig. 3 along with its first pressure cylinder element and when elongated, belong to pressure cylinder element 107 ' according to the on-load pressure cylinder 106 ' of shoe press apparatus of the present invention, 109 ' with the motion mode of Connection Element 111 '.
From Fig. 4, can obviously see, according to pressing device of the present invention can make Connection Element 111 ', when the on-load pressure cylinder 106 ' elongated (or shortening), substantial linear and be parallel to the elongated direction motion of on-load pressure cylinder 106.This has just minimized the stress on the possible press shoe supporter.
During the on-load pressure cylinder 6 ' elongated (shortening) of as shown in Figure 3 shoe press apparatus, Connection Element 111 ' will be with respect to on-load pressure cylinder 6 ' the elongated direction different angle that tilts, and angular dimension depends on that process elongated or that shorten carries out to such an extent that how long have.This just produces sizable stress on possible press shoe supporter, perhaps point under the situation of machine direction (machine direction opposite direction) in various power, causes the press shoe instability.And the frictional force between press shoe and press shoe supporter can change across machine direction, and this depends on the bigger deflection (and causing the bigger crooked of piston) of the supporter (beam) in the centre again.This can cause shoe press apparatus at the pressure curve of machine direction in variation across machine direction.
The present invention should be unable to be considered to be subjected to the restriction of described different embodiment in front, perhaps limit shown in appended accompanying drawing, but scope of the present invention is defined by claims described below.
According to the assembly machinery that present invention resides in shoe press apparatus and hydraulic pressure or air pressure, here without any meticulous description, because this class component is well-known to those skilled in the art, and discloses among the patent EP0933471 that also mentions in the above and discussed.
And, should be noted that paper web 104 is preferably accepted the machine fabric of water by one or several, carry such as one or several press felt and pass press nip 103.
Claims (14)
1. one kind is used for squeezing the paper web of advancing or the pressing device with extended press crack of board web, comprise: across the press shoe (101) of machine direction (MD) arrangement, this press shoe is arranged to cooperate with support component (102) and is formed an extended press crack (103), be used for during squeezing by described width of cloth material (104), one supporter (105), this supporter is in the direction towards support component, by supporting described press shoe in a movable manner along the isolated a plurality of on-load pressure cylinders of press shoe (101) (106), thereby can during squeezing, pressure be applied on the width of cloth material, wherein, each described on-load pressure cylinder (106) comprises that having the first pressure cylinder end (108) is connected with press shoe (101) or becomes the whole first pressure cylinder element (107) that is attached in this press shoe, with have the second pressure cylinder end (110) and be connected with supporter (105) or become the whole second pressure cylinder element (109) that is attached in this supporter, the described first and second pressure cylinder elements (107,109) connect slidably by Connection Element (111), wherein, this Connection Element (111) and the first pressure cylinder element (107) can first stroke length (L1) relatively move each other, the Connection Element (111) and the second pressure cylinder element (109) can second stroke length (L2) relatively move each other simultaneously, and, Connection Element has one the 3rd length (L3), it is characterized in that first stroke length (L1) is less than second stroke length (L2).
2. the pressing device with extended press crack as claimed in claim 1 is characterized in that, first stroke length (L1) is less than half of second stroke length (L2).
3. the pressing device with extended press crack as claimed in claim 1 or 2 is characterized in that, the 3rd length (L3) greater than first stroke length (L1) also greater than second stroke length (L2).
4. the described pressing device with extended press crack of arbitrary as described above claim is characterized in that, the 3rd length (L3) greater than first stroke length (L1) and second stroke length (L2) and.
5. the described pressing device of arbitrary as described above claim with extended press crack, wherein, Connection Element (111) passes through contact seal (112 with the form of sealing, 113) connect first (107) and second (109) the pressure cylinder element slidably, so that form at least one work chamber (114), in this chamber the pressure of supercharging medium can be reduced or increase so that the length shorter or the growth of on-load pressure cylinder (106), and in this way, during squeezing initiatively or during passive tilt press shoe (101), the central shaft (C1) of the first pressure cylinder element (107) and the central shaft (C3) of Connection Element (111) each other can relative tilt one angles, with central shaft (C2) inclination one angle with respect to the second pressure cylinder element (109), it is characterized in that, first stroke length (L1), second stroke length (L2) and the 3rd length (L3), with contact seal (112,113) geometric position is adaptive, so that minimize the angle (A2) between the central shaft (C2) of the central shaft (C3) of Connection Element and the second pressure cylinder element in described tilting procedure.
6. the described pressing device of arbitrary as described above claim with extended press crack, wherein, press shoe supporter (115) is fixed on the supporter, be used for being received in that press shoe (101) during the squeezing contacts with the press shoe supporter and the power on machine direction (MD) that stands, it is characterized in that, one or several arresting stop (116) is arranged on the first pressure cylinder element (107) and/or the contact element (111), so that limit the maximum of first stroke length (L1).
7. as claim 5 or 6 described pressing devices with extended press crack, it is characterized in that, the first pressure cylinder element (107) comprises the 3rd pressure cylinder end (116) of one and first pressure cylinder end (108) opening opposing, the second pressure cylinder element (109) comprises the 4th pressure cylinder end (117) of one and second pressure cylinder end (110) opening opposing, wherein, the respective end that the the 3rd (116) and the 4th (117) pressure cylinder end is sealed described Connection Element (111) respectively is to form work chamber (114) or several work chamber.
8. the pressing device with extended press crack as claimed in claim 7 is characterized in that, Connection Element (111) is columniform sleeve pipe basically, its inner part that forms work chamber (114).
9. the pressing device with extended press crack as claimed in claim 7 is characterized in that, Connection Element is solid, columniform body basically, forms work chamber in two end.
10. the pressing device with extended press crack as claimed in claim 9 is characterized in that, cylindrical body comprises one and several passage between two ends, is used for connecting the pressure between the work chamber.
11. as claim 5 or 6 described pressing devices with extended press crack, it is characterized in that, the first and second pressure cylinder elements are solid, columniform bodies basically, one end thereof is sealed by Connection Element, so that form work chamber, wherein said potted component is arranged on the described Connection Element.
12. the described pressing device of arbitrary as described above claim with extended press crack, it is characterized in that, described support component (102) is rotatable counter roll, wherein, flexible band (118), preferably the form of sleeve pipe is set to the form operation of ring for no reason between press shoe (101) and paper web or board web (104) during squeezing.
13., it is characterized in that this pressing device is used for the wet pressing of paper or board web as each described pressing device of claim 1-12 with extended press crack.
14., it is characterized in that this pressing device is used for the calendering of paper or board web as each described pressing device of claim 1-12 with extended press crack.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9904537A SE515484C2 (en) | 1999-12-10 | 1999-12-10 | Pressing device with extended press nip for pressing a running paper or cardboard web |
| SE99045379 | 1999-12-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1409785A true CN1409785A (en) | 2003-04-09 |
| CN1181245C CN1181245C (en) | 2004-12-22 |
Family
ID=20418088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB00816942XA Expired - Lifetime CN1181245C (en) | 1999-12-10 | 2000-12-07 | Press device having extended press nip for pressing travelling paperboard web |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1238148B1 (en) |
| JP (1) | JP4838473B2 (en) |
| CN (1) | CN1181245C (en) |
| AT (1) | ATE291660T1 (en) |
| AU (1) | AU2020201A (en) |
| CA (1) | CA2392520C (en) |
| DE (1) | DE60018970T2 (en) |
| SE (1) | SE515484C2 (en) |
| WO (1) | WO2001042559A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1965127B (en) * | 2004-02-19 | 2011-07-06 | 瓦图公司 | Loading device for a shoe press |
| CN103774483A (en) * | 2012-10-19 | 2014-05-07 | 美卓造纸机械公司 | Shoe roll, prolonged nip press, and fiber web machine |
| CN116324086A (en) * | 2020-09-03 | 2023-06-23 | 亚赛利纸业设备股份公司 | Shoe press for paper and related method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT360831B (en) * | 1977-12-20 | 1981-02-10 | Escher Wyss Ag | HYDRAULIC SUPPORT ELEMENT |
| CH659865A5 (en) * | 1982-07-30 | 1987-02-27 | Escher Wyss Ag | HYDROSTATIC SUPPORT ELEMENT AND ITS USE IN A ROLLING DEVICE. |
| SE461171C (en) * | 1988-05-25 | 1992-08-17 | Valmet Paper Machinery Inc | LONG NYP PRESSES BEFORE PAPER OR CARTON MACHINERY |
| FI87484C (en) * | 1988-12-15 | 1993-01-11 | Valmet Paper Machinery Inc | Support arrangement for bend-compensated drum |
| CA2259768C (en) * | 1998-01-30 | 2004-05-11 | Valmet Corporation | Shoe press |
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1999
- 1999-12-10 SE SE9904537A patent/SE515484C2/en not_active IP Right Cessation
-
2000
- 2000-12-07 AU AU20202/01A patent/AU2020201A/en not_active Abandoned
- 2000-12-07 AT AT00983448T patent/ATE291660T1/en not_active IP Right Cessation
- 2000-12-07 DE DE60018970T patent/DE60018970T2/en not_active Expired - Lifetime
- 2000-12-07 CA CA002392520A patent/CA2392520C/en not_active Expired - Fee Related
- 2000-12-07 EP EP00983448A patent/EP1238148B1/en not_active Expired - Lifetime
- 2000-12-07 JP JP2001544423A patent/JP4838473B2/en not_active Expired - Fee Related
- 2000-12-07 WO PCT/IB2000/001997 patent/WO2001042559A1/en active Search and Examination
- 2000-12-07 CN CNB00816942XA patent/CN1181245C/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1965127B (en) * | 2004-02-19 | 2011-07-06 | 瓦图公司 | Loading device for a shoe press |
| CN103774483A (en) * | 2012-10-19 | 2014-05-07 | 美卓造纸机械公司 | Shoe roll, prolonged nip press, and fiber web machine |
| CN103774483B (en) * | 2012-10-19 | 2017-03-29 | 维美德技术有限公司 | Boots roller, long nip press device and fiber web machine |
| CN116324086A (en) * | 2020-09-03 | 2023-06-23 | 亚赛利纸业设备股份公司 | Shoe press for paper and related method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1181245C (en) | 2004-12-22 |
| SE515484C2 (en) | 2001-08-13 |
| EP1238148B1 (en) | 2005-03-23 |
| WO2001042559A9 (en) | 2002-11-28 |
| JP4838473B2 (en) | 2011-12-14 |
| AU2020201A (en) | 2001-06-18 |
| ATE291660T1 (en) | 2005-04-15 |
| DE60018970D1 (en) | 2005-04-28 |
| SE9904537L (en) | 2001-06-11 |
| CA2392520A1 (en) | 2001-06-14 |
| EP1238148A1 (en) | 2002-09-11 |
| SE9904537D0 (en) | 1999-12-10 |
| JP2003516482A (en) | 2003-05-13 |
| DE60018970T2 (en) | 2006-01-19 |
| CA2392520C (en) | 2009-02-10 |
| WO2001042559A1 (en) | 2001-06-14 |
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20041222 |
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| CX01 | Expiry of patent term |