CN108203891A - Pressing device - Google Patents
Pressing device Download PDFInfo
- Publication number
- CN108203891A CN108203891A CN201611182602.9A CN201611182602A CN108203891A CN 108203891 A CN108203891 A CN 108203891A CN 201611182602 A CN201611182602 A CN 201611182602A CN 108203891 A CN108203891 A CN 108203891A
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- CN
- China
- Prior art keywords
- roller
- web
- pressure area
- felt
- press felt
- 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.)
- Pending
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- 238000003825 pressing Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 27
- 230000000694 effects Effects 0.000 claims description 11
- 239000000463 material Substances 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000007790 scraping Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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
- D21F3/04—Arrangements thereof
Landscapes
- Treatment Of Fiber Materials (AREA)
Abstract
The present invention discloses the pressing device for removing water from the web being supported on the forming net of upstream, is vacuum furnace for web to be sent to the first roller from forming net including the first roller to cooperate with forming net.Second roller is arranged in downstream relative to the first roller, is cooperated with the first roller for limiting the first pressure area, and the first part of water is removed from web during web passes through the first pressure area, is vacuum furnace.Third roller is arranged in downstream relative to the second roller, is cooperated with the second roller for limiting the second pressure area, is straight roll.The first press felt of ring type extends around the first roller and passes through the first pressure area so that supports web to the first pressure area from forming net, the first press felt is arranged in from forming net to the first pressure area between web and the first roller.The second press felt of ring type extends around the second roller and passes through the first pressure area so that supports web to the second pressure area from the first pressure area, the second press felt is arranged in from the first to the second pressure area between web and the second roller.
Description
Technical field
The present invention relates to a kind of pressing devices for being used to remove water from web (web).
More specifically, the present invention relates to a kind of squeezings for being used to remove water from the web being supported on the forming net of upstream
Device.
Background technology
In the pressing device of representative prior art, felt is transmitted by the squeezing extended around transfer roller, from forming
The web of net transmission forming.After this by squeezing transmit felt by the web support of forming between counter-rotating roller and
Rotating roller guiding is reversed, counter-rotating roller defines therebetween press nips, for removing water from the web of forming.
Invention content
The present invention provides unique pressing device, wherein, transfer roller also separately be used as pressure roller so that when suction apply to
During transfer roller, the web of forming is transferred and the squeezing by extending around transfer roller transmits felt by shifting water.This it
Afterwards and then, while still being supported by transfer roller, the web for the forming being supported on squeezing transfer roller passes through the first pressure area, the
One pressure area is limited between transfer roller and the reversed pressure roller of cooperation.
Therefore the present invention provides a kind of squeezing arrangements closely, avoid providing both transfer roller and the first pressure roller
Cost, this is because transfer roller is used as the dual purpose of transfer roller and the first pressure roller.
Therefore, the method is mainly characterized in that providing a kind of pressing device for being used to remove water from web, which overcome passes
The problem of prior art arrangement of connection.
Another feature of the present invention is to provide a kind of pressing device, extremely compact and avoid width of the rewetting through squeezing
Material.
Another feature of the present invention is to provide a kind of pressing device, and the web through squeezing given is to print table
Face.
By consideration included in the specific descriptions of the preferred embodiment of the present invention, it will be understood by those skilled in the art that this hair
Other bright feature and advantage will be evident.
The present invention relates to a kind of pressing devices for being used to remove water from the web being supported on the forming net of upstream.Squeezing dress
It puts including the first roller, cooperates with forming net, for web to be sent to the first roller from forming net, the first roller is vacuum furnace.The
Two rollers are arranged in downstream relative to the first roller, and the second roller is cooperated with the first roller for defining therebetween the first pressure area, in width
Material passes through the first part for removing water during the first pressure area from web.Second roller is vacuum furnace.Third roller is relative to the second roller cloth
It puts in downstream, third roller is cooperated with the second roller for defining therebetween the second pressure area, for during web passes through the second pressure area
The second part of water is removed from web.Third roller is straight roll.The first press felt of ring type extends and wears around the first roller
Cross the first pressure area so that the first press felt supports web to the first pressure area from forming net, and the first press felt is from forming net
It is arranged between web and the first roller to the first pressure area.
In the more specific embodiment of the present invention, the first movable guide reel is arranged for the first press felt of guiding, makes
When proper first movable guide reel is arranged in its first position, the first press felt surrounds the second roller week by the first wrapping amount
It encloses.But when the first movable guide reel is arranged in its second position, the first press felt surrounds the by the second wrapping amount
Around two rollers.
In addition, the first press felt surrounds the second roller week by the variant pack between the first and second wrapping amounts around amount
It encloses, the second wrapping amount depends on movement of the first movable guide reel between its first and second position.
Second movable guide reel is arranged for the second press felt of guiding so that when the second movable guide reel is arranged in it
During the first configuration, the second press felt is surrounded by the first wrapping degree around third roller.But when the second movable guide reel
When being arranged in its second configuration, the second press felt is surrounded by the second wrapping degree around third roller.
In addition, the second press felt surrounds third roller week by the adjustable wrapping amount between the first and second wrapping degree
It encloses, the second wrapping degree depends on movement of the second movable guide reel between its first configuration and the second configuration.
In addition, the first scraper cooperates with the first roller, for scraping the first part of water removal from the first roller.
Moreover, the first collector arrangements are near the first scraper, for collecting and removing the first part of water.
Second scraper cooperates with the second roller, and for scraping the second part of water removal from the second roller, the second collector arrangements are
Two scrapers it is farther near, for collecting and removing the second part of water.
In a preferred embodiment of the invention, third roller is plane pressure roller.
Moreover, web during it passes through the first pressure area by the double blankets clampings of the first and second press felts, for assist from
There removes the first and second parts of water.
In addition, web is clamped during it passes through the second pressure area by the second press felt list blanket so that passes through second at it
The first surface of web is given with smooth surface by plane third pressure roller during pressure area.
Steam chest is arranged proximate to the second roller, for the steam heating during web movement is between the first and second pressure areas
Web, web are arranged in during it is across the first and second pressure areas between steam chest and the second roller.
In addition, web scrape move device cooperate with third roller and be arranged to the second pressure area about diametrically contraposition, for from the
Three rollers remove web.
Broken pond is arranged in web and scrapes below shifting device, for collecting the web removed from third roller.
In addition, deflector, which is attached to web, scrapes shifting device, for will be deflected from the web that third roller removes towards broken pond.
It is moved between device and the second pressure area moreover, another web scrapes to move device and be arranged in web and scrape, for removing width from third roller
Material.
Movable vacuum transfer roller is arranged proximate to third roller and arranges relative to the second pressure area in downstream.
Moreover, ring type transmission felt is guided in around movable vacuum transfer roller so that when movable vacuum transfer roller is arranged
During its first position, third roller and movable vacuum transfer roller define therebetween another pressure area passed through for web, while web
It is arranged between third roller and transmission felt.The arrangement is such so that when movable vacuum transfer roller is arranged in its second
When putting, third roller and movable vacuum transfer roller define therebetween gap, for when transmission felt is around movable vacuum transfer roller
By web from third roller open draw to transmission felt during extension.
Frame with the first and second parts is provided with movable vacuum transfer roller, and movable vacuum transfer roller is around the first rotation
Axis is pivotally secured to the first part of frame.
Guide reel is arranged in downstream relative to movable vacuum transfer roller, for ring type to be guided to transmit felt.Guide reel is around
Two rotation axis are pivotally secured to the second part of frame.
Moreover, frame is pivotally anchored to third roller around the third rotation axis separated with third roller.Third rotation axis
Be arranged between the first and second rotation axis, first, second, and third rotation axis be arranged to separate relative to each other and
It is parallel.Moreover, when movable vacuum transfer roller moves between its first and second position, the first and second rotation axis are around
Three rotation axis are run.
Mobile equipment is operatively associated with frame, for selectively around third rotation axis pivot frame, for will
Movable vacuum transfer roller moves between its first and second position.
Moreover, squeezer is arranged in downstream relative to movable vacuum transfer roller, hair is transmitted by ring type for further squeezing
The web of felt support.
Squeezer includes four-roller, and downstream is arranged in relative to movable vacuum transfer roller.Four-roller cooperates with web, makes
Ring type transmission felt is arranged in the between four-roller and web.
More specifically, four-roller is vacuum furnace, and squeezer includes the 5th roller, cooperates with four-roller, for therebetween
Limit the third pressure area for being passed through by the web of ring type transmission felt support.
Third press felt extends through third pressure area so that web is arranged in ring type during it passes through third pressure area and passes
It send between felt and third felt.
In an alternative embodiment of the invention, squeezer is extended nip press.
Hereinafter, it is of the invention for a person skilled in the art to be permitted by the detailed description for considering to include with reference to attached drawing
More modifications and variations are obvious.Attached drawing shows the preferred embodiment of the present invention.But this modifications and variations are fallen into
By in subsidiary spirit and scope of the invention.
It will be application of the present invention to the design of papermaking apparatus to be included in the content in these modifications, individually or group
That closes includes：Dilution control head box, Fourdrinier former, Fourdrinier former and hybrid shaping device have the more of multiple head boxs
Layer shaped segment and with how long wire stitcher Aladdin former, it is single and two layering dryer sections, it is single and two layering
Mixing arrangement, stock tank and the metering size press of dryer section, have single or two roller groups and spool for sack kraft paper,
The expanding element of hard calendar, soft calendar.
Description of the drawings
Fig. 1 is the side view of pressing device according to the present invention；
Fig. 2 is analogous to view shown in FIG. 1, but it illustrates be arranged in its second position when the first movable guide reel
When construction；
Fig. 3 is analogous to view shown in FIG. 1, but the second movable guide reel is arranged in its second configuration；
Fig. 4 is analogous to view shown in FIG. 1, but shows movable vacuum transfer roller；
Fig. 5 is analogous to view shown in Fig. 4, but movable vacuum transfer roller is located at different positions；
Fig. 6 is analogous to Fig. 4-view shown in fig. 5, but shows the movable vacuum transfer roller in its position,
The position, third roller and movable vacuum roller define therebetween another pressure area；
Fig. 7 is analogous to view shown in fig. 5, but shows the alternative embodiment of the present invention；
Fig. 8 is analogous to view shown in Fig. 4, but shows another embodiment of the present invention；And
Fig. 9 is analogous to view shown in Fig. 8, but the activity suction roller of showing has moved to left side.
In the embodiment of various views and attached drawing, similar reference marker refers to like.
Specific embodiment
Fig. 1 be according to the present invention generally refer on behalf of 10 pressing device side view.As shown in Figure 1, pressing device 10 is set
It is set to remove water from the web 12 being supported on upstream forming net 14.Pressing device 10 includes the first roller 16, the first roller
16 cooperate with forming net 14, for web 12 to be sent to the first roller 16 from forming net 14.Second roller 18 is relative to the first roller 16
Downstream is arranged in, the second roller 18 is cooperated with the first roller 16 for defining therebetween the first pressure area N1, for passing through the in web 12
The first part 20 of water is removed during one pressure area N1 from web 12.Third roller 22 is arranged in downstream, third relative to the second roller 18
Roller 22 is cooperated with the second roller 18 for defining therebetween the second pressure area N2, for during web 12 passes through the second pressure area N2 from width
Material 12 removes the second part 24 of water.
In the more specific embodiment of the present invention, the first pressure roller 16 are vacuum furnaces or even more specifically, the first squeezing
Roller 16 is suction press roll.
The first press felt of ring type 26 extends around the first roller 16 and passes through the first pressure area N1 so that the first squeezing hair
Felt 26 supports web 12 to the first pressure area N1 from forming net 14.
Moreover, the first press felt 26 is arranged in from 14 to the first pressure area N1 of forming net between 12 and first roller 16 of web.
In addition, the first movable guide reel 28 is arranged for the first press felt 26 of guiding so that when the first activity guiding
When roller 28 is arranged in its first position as shown in Figure 1, as being indicated by the first peripheral distance D1, the first press felt 26 is logical
It crosses the first wrapping amount and wraps the second roller 18.
Fig. 2 is analogous to the view shown in Fig. 1, but shows when the first movable guide reel 28 is arranged in its second position
When construction.As shown in Fig. 2, as being indicated by the second peripheral distance D2, the first press felt 26 passes through the second wrapping amount packet
Around the second roller 18.
In addition, the first press felt 26 is wrapped by the variant pack between the first wrapping amount D1 and the second wrapping amount D2 around amount
Second roller 18, the second wrapping amount D2 depend on the first activity between its first and second position respectively as depicted in figs. 1 and 2
The movement of guide reel 28.
Moreover, as shown in Figure 1, the second press felt of ring type 30 extends around the second roller 18 and passes through the first pressure area
N1 so that the second press felt 30 supports web 12 to the second pressure area N2 from the first pressure area N1.
Moreover, the second press felt 30 be arranged in from the first pressure area N1 to the second pressure area N2 12 and second roller 18 of web it
Between.
Second movable guide reel 32 is arranged for the second press felt 30 of guiding so that when the second 32 cloth of movable guide reel
It puts in its first configuration as shown in Figure 1, as being indicated by the first peripheral distance d1, the second press felt 32 passes through first
Wrapping degree surrounds around third roller 22.
Fig. 3 is analogous to the view shown in Fig. 1.But as shown in figure 3, when the second movable guide reel 32 be arranged in its
During two configurations, as being indicated by the second peripheral distance d2, the second press felt 30 surrounds third by the second wrapping degree
Around roller 22.
In addition, the second press felt 30 passes through adjustable wrapping amount packet between the first wrapping degree d1 and the second wrapping degree d2
Be wound on around third roller 22, the second wrapping degree d2 depend on its first and second d position respectively as shown in figures 1 and 3 it
Between the second movable guide reel 32 movement.
In addition, as depicted in figs. 1 and 2, the first scraper 34 cooperates with the first roller 16, for scraping the of water removal from the first roller 16
A part 20.
Moreover, the first collector 36 is arranged near the first scraper 34, for collecting and removing the first part of water
20。
Second scraper 38 cooperates with the second roller 18, for scraping the second part 24 of water removal, the second collector from the second roller 18
40 are arranged near the second scraper 38, for collecting and removing the second part 24 of water.
In a preferred embodiment of the invention, third roller 22 is plane pressure roller.
Moreover, web 12 is pressed from both sides during it passes through the first pressure area N1 by the first and second press felts 26 and 30 pairs of blankets respectively
It holds, for assisting removing the first and second parts 20 and 24 of water respectively.
In addition, web 12 is clamped during it passes through the second pressure area N2 by the single blanket of the second press felt 30 so that by flat
Face third pressure roller 22 give the first surface S1 of web 12 with smooth surface during it passes through the second pressure area N2.
Steam chest 42 is arranged proximate to the second roller 18, for respectively in web 12 between the first and second pressure area N1 and N2
Steam heats web 12 during movement, and web 12 is arranged between the first and second pressure area N1 and N2 across period respectively at it
Between 42 and second roller 18 of steam chest.
In addition, web scrapes and moves device 44 and cooperate and be arranged to and the second pressure area N2 about diametrically contrapositions with third roller 22, use
In from third roller 22 remove web 12.
Broken pond 46 arranges that web is scraped and moves 44 lower section of device, for collecting the web 12 removed from third roller 22.
It scrapes in addition, deflector 48 is attached to web and moves device 44, for the web 12 that will be removed from third roller 22 towards broken
Pond 46 deflects.
It is moved between device 44 and second pressure area N2 moreover, another web scrapes to move device 50 and be arranged in web and scrape, for from third roller
22 remove web 12.
Fig. 4 is analogous to the view of the view shown in Fig. 1, but shows movable vacuum transfer roller 52.As shown in figure 4,
Movable vacuum transfer roller 52 is arranged proximate to third roller 22 and is arranged in downstream relative to the second pressure area N2.
Fig. 5 is analogous to the view of the view shown in Fig. 4, but with the roller 52 in its different location.As shown in figure 5,
Ring type transmission felt 54 is guided in around movable vacuum transfer roller 52 so that movable vacuum transfer roller 52 is arranged in as it
Position：Movable vacuum transfer roller 52 is close to third roller 22 so that web 12 is arranged between third roller 22 and transmission felt 54.
Fig. 6 is analogous to the view of the view shown in Fig. 4-Fig. 5, but shows that movable vacuum transfer roller 52 is in this way
Position, in the position, roller 22 and movable vacuum roller 52 define therebetween another pressure area NF, and another pressure area NF is logical for web 12
It crosses, while web 12 is arranged between third roller 22 and transmission felt 54.
As shown in figure 4, the movable roll 52 shown is in its third position, and in fig. 5, it is shown that roller 52 be in its second
Position, at this time third roller 22 and movable vacuum transfer roller 52 define therebetween clearance G, for by web 12 from 22 open type of third roller
Traction extremely transmission felt 54.
Fig. 6 shows the roller 52 in first position, and first position is used to define another pressure area NF.
As shown in figure 5, this is arranged such that when movable vacuum transfer roller 52 is arranged in its second position, with transmission felt
54 extend around movable vacuum transfer roller 52, and third roller 22 and movable vacuum transfer roller 52 define therebetween clearance G, for inciting somebody to action
Web 12 is from 22 open draw of third roller to transmission felt 54.
As Figure 4-Figure 6, frame 56 has first part 58 and second part 60.As shown in figure 4, movable vacuum transmits
Roller 52 is pivotally secured to the first part 58 of frame 56 around first rotation A1.
Guide reel 62 is arranged in downstream relative to movable vacuum transfer roller 52, for ring type to be guided to transmit felt 54.Guiding
Roller 62 is pivotally secured to the second part 60 of frame 56 around the second rotation axis A2.
Moreover, frame 56 is pivotally anchored to third roller 22 around the third rotation axis A3 separated with third roller 22.The cloth
It puts so that third rotation axis A3 is arranged between the first and second rotation axis A1 and A2 so that first, second and
Three rotation axis A1, A2 are respectively arranged to be separated from each other and parallel with A3, when movable vacuum transfer roller 52 respectively such as Fig. 6,
When being moved between Fig. 5 and its first, second, and third position shown in Fig. 4, the first and second rotation axis A1 and A2 rotating around
Third rotation axis A3 is run.
Mobile equipment 64 is operatively associated with frame 56, for selectively around third rotation axis A3 pivot frames
56, for the mobile movable vacuum transmission between such as Fig. 6, Fig. 5 and its first, second, and third position shown in Fig. 4 respectively
Roller 52.
Fig. 4-Fig. 6 also show be referred to as 66 squeezer, be disposed generally on down relative to movable vacuum transfer roller 52
Trip.As shown in fig. 6, squeezer 66 is arranged in downstream relative to movable vacuum transfer roller 52, passed for further squeezing by ring type
The web 12 that felt 54 is sent to support.
Squeezer 66 includes four-roller 68, and downstream is arranged in relative to movable vacuum transfer roller 52.Four-roller 68 and width
Material 12 cooperates so that ring type transmission felt 54 is arranged between four-roller 68 and web 12.
More specifically, four-roller 68 is vacuum furnace, and squeezer 66 includes the 5th roller 70, cooperates and is used for four-roller 68
Third pressure area N3 is defined therebetween, the web 12 for being supported by ring type transmission felt 54 passes through.
Third press felt 72 extends through third pressure area N3 so that web 12 is arranged during it passes through third pressure area N3
It is transmitted between felt 54 and third felt 72 in ring type.
Fig. 7 is analogous to the view of the view shown in Fig. 5, but shows the alternative embodiment of the present invention.Such as Fig. 6 institutes
Show, squeezer 66a is extended nip press.
Fig. 8 is analogous to the view of the view shown in Fig. 4, but shows another embodiment of the present invention.Such as Fig. 8 institutes
Show, the activity suction roller 52b shown is in retracted position so that stablized across area N1 until the web 12 through squeezing and
N2, the web on plane third roller 22 are removed and deflected into broken pond 46 by deflector 48 by scrapers 44.
Fig. 9 is analogous to the view of the view shown in Fig. 8, but shows that activity aspirates after web 12 is stable
Roller 52b has moved to left side so that activity suction roller 52b " touches " third roller 22.Vacuum in activity suction roller 52b is by width
The smooth surface of material 12 from roller 22 is drawn to transmission felt 54b, and on transmission felt 54b, web 12 is towards third pressure area N3
It is supported and guides.
In the operation of device 10, the web 12 of forming by the first press felt 26 for extending around suction roller 16 from
Forming net 14 is transferred.Web 12 is squeezed immediately in pressure area N1, for removing the first part 20 of water from web 12.Pass through first
The first part 20 of the water is aspirated pressure roller 16 from first and scrapes off and collect in the first collector 36 by scraper 34, and first receives
Storage 36 is catch tray, can be drained by gravity or by unshowned vacuum pump.
Web 12 is during it passes through the first pressure area N1 respectively by the first and second press felts 26 and 30 pairs of blanket clampings.The
In one pressure area N1 double blankets clamping is particularly advantageous, this is because this allow across during first pressure area N1 from forming
Web removes a large amount of water.Moreover, as shown in Figure 1, the function of function and the first pressure roller by combining transfer roller, squeezer
Size is far smaller than conventional press, and in conventional press, web is delivered to the first pressure area from transfer roller when aspirating felt
When, web travels the sizable distance for being supported on and aspirating below felt.In addition, by by transfer roller and the first pressure roller work(
It can combine into pressure roller 16 are aspirated, by only providing a roller 16 without being to provide transfer roller and completely different independent first
Pressure roller, extremely compact squeezer of the invention reduce the overall cost of squeezer.
Once being left from the first pressure area N1, web follows the second press felt 30 around the second roller 18, and by steam
42 steam of case heats, and steam chest 42 heats any water remained in web 12.It is this during web passes through the second pressure area N2
Steam heating auxiliary removes this remaining water.Then the second part 24 of this water is scraped off simultaneously from the second roller 18 by the second scraper 38
And it is collected in the second collector 40.
When web is left from the second pressure area, smooth surface that web 12 will inherently follow third roller 22.Third is squeezed
The smooth surface of roller 22 gives the advantageous smooth surfaces of first surface S1 of web 12 during web 12 passes through the second pressure area N2,
Thus conducive on liner plate being subsequently printed on etc..
Before the web 12 through squeezing has been stablized on pressing device 10, movable vacuum transfer roller 52 will be set by movement
Standby 64 are moved to its third place as shown in Figure 4 so that web, which will scrape shifting device 44, to remove web 12, deflector from third roller 22
48 webs for this removal being deflected towards 46 lower section of broken pond.
As shown in figure 5, when web 12 is stable, web is scraped shifting device 44 and is shunk from third roller 22, while movable vacuum
Transfer roller 52 is moved to its second position as shown in Figure 5 from its third place, is then moved to as shown in Figure 6 first
It puts so that movable vacuum transfer roller 52 slightly contacts third roller 22 or " touching " third roller 22 to form another pressure area therebetween
NF.Vacuum in movable vacuum transfer roller 52 causes the stable web 12 through squeezing to be sent to from the surface of third roller 22 in work
The transmission felt 54 of dynamic vacuum conveyor roll 52 surrounding extension.In movable vacuum transfer roller 52 its Fig. 6 position is moved to from Fig. 5 positions
Continuous small length web or paper slip 74 pass through another width as shown in Figure 5 from the surface of third roller 22 on period third roller 22
Material is scraped shifting device 50 and is scraped off.
Hereafter, the web 12 being supported on transmission felt 54 is guided roller 62 and is guided towards squeezer 66,66 energy of squeezer
Enough it is roller group squeezer (roll couple press) 66 or extended nip press 66a.
The present invention provides unique, compact pressing devices, provide during web passes through the first pressure area from web
Optimization carries out the smooth upper surface after water removal and the second pressure area downstream.
Claims (10)
1. a kind of pressing device for being used to remove water from the web being supported on the forming net of upstream, the pressing device include：
First roller cooperates with the forming net, described for the web to be sent to first roller from the forming net
First roller is vacuum furnace；
Second roller is arranged in downstream relative to first roller, and second roller is cooperated with first roller for therebetween
The first pressure area is limited, for moving the first part of the water from the web during the web passes through first pressure area
It removes, second roller is vacuum furnace；
Third roller is arranged in downstream relative to second roller, and the third roller is cooperated with second roller for therebetween
The second pressure area is limited, for moving the second part of the water from the web during the web passes through second pressure area
It removes, the third roller is straight roll；
The first press felt of ring type extends around first roller and passes through first pressure area so that described first
Press felt supports the web to first pressure area from the forming net, and first press felt is from the forming net
It is arranged between the web and first roller to first pressure area；And
The second press felt of ring type extends around second roller and passes through first pressure area so that described second
Press felt supports the web to second pressure area from first pressure area, and second press felt is from described first
Pressure area to second pressure area is arranged between the web and second roller.
2. pressing device according to claim 1, further comprises：
First movable guide reel, is used to guide first press felt so that when the described first movable guide reel is arranged in
During its first position, first press felt wraps second roller and when the described first activity by the first wrapping amount
When guide reel is arranged in its second position, first press felt wraps second roller by the second wrapping amount.
3. pressing device according to claim 2, wherein,
First press felt is wrapped by the variant pack between the first wrapping amount and the second wrapping amount around amount
Second roller, the second wrapping amount depend on the described first movable guide reel in its described first position and described second
Movement between position.
4. pressing device according to claim 1, further comprises：
Second movable guide reel, is used to guide second press felt so that when the described second movable guide reel is arranged in
During its first configuration, second press felt wraps the third roller and when described second lives by the first wrapping degree
When dynamic guide reel is arranged in its second configuration, second press felt wraps the third roller by the second wrapping degree.
5. pressing device according to claim 4, wherein,
Second press felt passes through the adjustable wrapping amount between the described first wrapping degree and the second wrapping degree
The third roller is wrapped, the second wrapping degree depends on the described second movable guide reel in its described first configuration and institute
State the movement between the second configuration.
6. pressing device according to claim 1, further comprises：
First scraper cooperates with first roller, for striking off the first part of the water from first roller；
First collector is arranged near first scraper, for collecting and removing the first part of the water.
7. pressing device according to claim 1, further comprises：
Second scraper cooperates with second roller, for striking off the second part of the water from second roller；
Second collector is further arranged near second scraper, for collecting and removing the second of the water
Part.
8. pressing device according to claim 1, wherein,
The web is double by first press felt and second press felt during it passes through first pressure area
Blanket clamps, for assisting removing the first and second parts of the water.
9. pressing device according to claim 8, wherein,
The web is clamped during it passes through second pressure area by the second press felt list blanket so that passes through institute at it
The first surface of the web is given with smooth surface by the third roller of plane during stating the second pressure area.
10. pressing device according to claim 1, further comprises：
Steam chest is arranged proximate to second roller, in the web between first pressure area and the second pressure area
Steam heats the web during movement, and the web is arranged in during it is by between first pressure area and the second pressure area
Between the steam chest and second roller；
Web scrapes shifting device, cooperates with the third roller, and be arranged to second pressure area about diametrically contraposition, for from
The third roller removes the web；
Broken pond is arranged in the web and scrapes below shifting device, for collecting the web removed from the third roller；
Deflector is attached to the web and scrapes shifting device, for will be from the web that the third roller removes towards the damage
Paper pond deflects；
Another web scrapes shifting device, is arranged in the web and scrapes and moves between device and second pressure area, for from the third
Roller removes the web；
Movable transfer roller is arranged proximate to the third roller, and is arranged in downstream relative to second pressure area；
Ring type transmits felt, is guided in around the movable transfer roller so that when the movable transfer roller be arranged in its
During one position, the third roller and the movable transfer roller define therebetween another pressure area passed through for the web, simultaneously
The web be arranged between the third roller and the transmission felt and cause when the activity transfer roller be arranged in its
During two positions, while the transmission felt extends around the movable transfer roller, the third roller and the activity pass
Roller is sent to define therebetween gap, for by the web from the third roller open draw to the transmission felt；
The activity transfer roller is vacuum furnace；
Frame, has the first and second parts, and the movable vacuum transfer roller is pivotally secured to institute around first rotation
State the first part of frame；
Guide reel is arranged in downstream relative to the movable vacuum transfer roller, described for guiding the ring type transmission felt
Guide reel is pivotally secured to the second part of the frame around the second rotation axis；
The frame is pivotally anchored to the third roller around the third rotation axis separated with the third roller so that described
Three rotation axis are arranged between the first rotation and the second rotation axis so that first, second, and third rotary shaft
Line is arranged to be separated from each other and parallel, when the movable vacuum transfer roller is in its described first position and the second position
Between when moving the first rotation and the second rotation axis run around the third rotation axis；
Mobile equipment, is operatively associated with the frame, for selectively around described in third rotation axis pivot
Frame, for the movable vacuum transfer roller to be moved between its described first position and the second position；
Squeezer is arranged in downstream relative to the movable vacuum transfer roller, is transmitted for further squeezing by the ring type
The web of felt support；
The squeezer includes：
Four-roller is arranged in downstream relative to the movable vacuum transfer roller, and the four-roller cooperates with the web so that
The ring type transmission felt is arranged between the four-roller and the web；
The four-roller is vacuum furnace；
The squeezer includes：
5th roller cooperates with the four-roller, for defining therebetween for as described in ring type transmission felt support
The third pressure area that web passes through,；
Third press felt extends through the third pressure area so that the web is during it passes through the third pressure area
It is arranged between the ring type transmission felt and the third felt；
The squeezer is extended nip press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611182602.9A CN108203891A (en) | 2016-12-20 | 2016-12-20 | Pressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611182602.9A CN108203891A (en) | 2016-12-20 | 2016-12-20 | Pressing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108203891A true CN108203891A (en) | 2018-06-26 |
Family
ID=62601993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611182602.9A Pending CN108203891A (en) | 2016-12-20 | 2016-12-20 | Pressing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108203891A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112567094A (en) * | 2018-08-09 | 2021-03-26 | 福伊特专利有限公司 | Machine and method for producing a corrugated cardboard base web |
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| EP0462090A1 (en) * | 1990-06-11 | 1991-12-18 | Valmet Paper Machinery Inc. | Method and doctor construction for removing water out of perforations in a suction roll |
| CN1764814A (en) * | 2003-03-31 | 2006-04-26 | Pmt意大利有限公司 | Squeeze apparatus for eliminating water from paper web |
| DE102005054510A1 (en) * | 2005-11-16 | 2007-05-24 | Voith Patent Gmbh | tissue machine |
| CN101463576A (en) * | 2007-12-21 | 2009-06-24 | 美卓造纸机械公司 | Belt assembly and paper- or board making machine comprising the belt assembly |
| DE102014202928A1 (en) * | 2014-02-18 | 2015-02-26 | Voith Patent Gmbh | presser |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3775243A (en) * | 1970-06-01 | 1973-11-27 | Black Clawson Co | Water saveall for grooved roll in paper machine press nip |
| US4792381A (en) * | 1986-09-12 | 1988-12-20 | Valmet Oy | Closed and compact press section of a paper machine with double S shaped path or mirror image thereof |
| EP0462090A1 (en) * | 1990-06-11 | 1991-12-18 | Valmet Paper Machinery Inc. | Method and doctor construction for removing water out of perforations in a suction roll |
| CN1764814A (en) * | 2003-03-31 | 2006-04-26 | Pmt意大利有限公司 | Squeeze apparatus for eliminating water from paper web |
| DE102005054510A1 (en) * | 2005-11-16 | 2007-05-24 | Voith Patent Gmbh | tissue machine |
| CN101463576A (en) * | 2007-12-21 | 2009-06-24 | 美卓造纸机械公司 | Belt assembly and paper- or board making machine comprising the belt assembly |
| DE102014202928A1 (en) * | 2014-02-18 | 2015-02-26 | Voith Patent Gmbh | presser |
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| CN112567094A (en) * | 2018-08-09 | 2021-03-26 | 福伊特专利有限公司 | Machine and method for producing a corrugated cardboard base web |
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