CN202786962U - Scraper tool for fiber web machine and scraper device for fiber web machine - Google Patents
Scraper tool for fiber web machine and scraper device for fiber web machine Download PDFInfo
- Publication number
- CN202786962U CN202786962U CN2010900010329U CN201090001032U CN202786962U CN 202786962 U CN202786962 U CN 202786962U CN 2010900010329 U CN2010900010329 U CN 2010900010329U CN 201090001032 U CN201090001032 U CN 201090001032U CN 202786962 U CN202786962 U CN 202786962U
- Authority
- CN
- China
- Prior art keywords
- scraper device
- flow surface
- roller
- scraper
- doctor blade
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G3/00—Doctors
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G3/00—Doctors
- D21G3/005—Doctor knifes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
- D21H23/34—Knife or blade type coaters
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- Paper (AREA)
Abstract
The utility model relates to a scraper tool for a fiber web machine. A scraper tool (10) comprises a tip portion (11) followed by a water passing surface (12) to generate slice effect. The curvature of the contour of the water passing surface (12) is substantially identical to that of the surface scraped. The utility model also relates to a scraper device for the fiber web machine.
Description
Technical field
The utility model relates to a kind of scraper device for fiber web machine, and wherein this scraper device comprises thereafter the tip followed by flow surface (flow surface), for generation of thin slice effect (foil effect).The utility model also relates to the doctor blade device in a kind of fiber web machine.
Background technology
In fiber web machine (for example, paper machine or board machine), because of various former thereby use the roller of surface band opening.For example, in suction roll, housing is perforated to produce from the inside of roller to the vacuum effectiveness of the outside of roller.These holes so that surface of shell with opening.On the other hand, also use fluted roller, wherein, surface of shell has groove, and it mainly is in order to improve water removal effect.Also have the suction roll of surperficial trough of belt, the housing of this suction roll both had been provided with the hole, also had been provided with groove.Except groove or as the replacement scheme of groove, can use for example blind hole.
Suction roll and fluted roller especially are applied in forming section and the press section of fiber web machine.Yet in practice, the surface with opening of housing is mainly filled by water.In fact, be very difficult at production period from housing discharge water and subtitle substance.So the groove of fluted roller is made dirty, the hole of suction roll is filled up by water, and can't drain satisfactorily clean.Therefore, the water removal effect of forming section and press section weakens, and the drying nest of the web of producing reduces, and the maintenance increase in demand of roller.In practice, even the hole that need to open suction roll by boring, and need to mechanically clear up the groove of fluted roller.
For the housing of the roller that makes the surface band opening keeps clean, can use so-called razor blade scraper; The flake blade of this razor blade scraper (positioning in some way) can produce the thin slice effect when roller rotates.The thin slice effect forms vacuum between flake blade and housing, and this vacuum is drawn water and subtitle substance from the band open surfaces of housing.Flake blade comprises thereafter the tip followed by flow surface, for generation of the thin slice effect.A kind of razor blade scraper has been proposed in Finnish patent No.87095.U.S. Patent No. 6491791 has also proposed a kind of flake blade, blows mist (being Compressed Gas in practice) by the inside from flake blade and strengthens the vacuum that is produced by flake blade.
In practice, the cleaning power of traditional flake blade, especially only the cleaning power of common doctor blade is not enough to the roller that sorting table is worn opening.Using in the compressed-air actuated situation, the performance of flake blade can increase, yet this can produce very high operating cost.In factory, compressed-air actuated capacity usually is limited, and this has hindered to a certain extent compressed air is applied on the flake blade.In addition, produce the flake blade existing problems that strengthen with compressed air, this has increased produces cost.
Summary of the invention
The purpose of this utility model provides a kind of scraper device that is used for fiber web machine of novelty, and this scraper device is higher than former scraper device efficiency, but required operating energy still less.Another purpose of the present utility model provides a kind of doctor blade device that is used for fiber web machine of novelty, and this doctor blade device is higher than former doctor blade device efficient, but more has superiority on expense.
According to a scheme of the present utility model, propose a kind of scraper device for fiber web machine, this scraper device comprises thereafter the tip followed by flow surface, for generation of the thin slice effect, it is characterized in that the profile of this flow surface is basically identical with the curvature on the surface that will be scratched.
Preferably, this flow surface is substantially spill by this way, and this mode is that the radius of curvature of this flow surface increases after this tip to some extent.
Preferably, this scraper device is formed doctor blade.
Preferably, in this doctor blade, be provided with the guide structure that forms this flow surface.
Preferably, this scraper device comprises the blade element that is positioned at after this flow surface.
Preferably, the effective length of this flow surface is 50-200mm, more advantageously is 100-150mm.
According to another scheme of the present utility model, doctor blade device in a kind of fiber web machine is proposed, the roller that comprises the surface band opening, near this roller, be provided with the scraper device, this scraper device comprises thereafter the tip followed by flow surface, is used for producing the thin slice effect during this roller rotation, thereby is used for the surface removal water with opening from this roller, it is characterized in that the profile of this flow surface is basically identical with the curvature on the surface of the roller that will be scratched.
Preferably, the distance on the surface of this flow surface and this roller is 2-10mm, more advantageously is 4-8mm.
Preferably, this doctor blade device comprises regulator, and this regulator is for the distance on the surface of the profile of adjusting this flow surface and/or this flow surface and this roller.
Be characterised in that according to scraper device of the present utility model and doctor blade device the profile of flow surface is basically identical with the curvature on the roller surface that will be scratched.So the interaction energy of thin slice effect accesses maintenance, especially, the effect of thin slice effect can extend to than longer in the past distance.What like this, water and subtitle substance can be by distributing rollers effectively need not compressed air with the surface of opening.In addition, very novel and beat all feature can be incorporated into according in the scraper device of the present utility model.This has further improved water removal effect, has reduced simultaneously the needed space of scraper equipment.
Description of drawings
The below describes the utility model in detail with reference to the accompanying drawing that part embodiment of the present utility model is shown, wherein:
Fig. 1 a shows according to two the scraper devices of swiping near surface of being suitable for of the present utility model,
Fig. 1 b shows the application example according to doctor blade device of the present utility model,
Fig. 2 is the partial enlarged drawing of the doctor blade device of Fig. 1 b.
The specific embodiment
Fig. 1 a shows according to of the present utility model for two kinds of fiber web machine different scraper devices.Particularly, the purpose of scraper device is band open surfaces (such as groove, hole or blind hole etc.) removal water and the subtitle substance from roller.Usually, scraper device 10 comprises thereafter the tip 11 followed by flow surface 12, for generation of the thin slice effect.The tip is suitable for slightly contacting with the surface 14 of roller 13.In addition, scraper device 10, particularly its flow surface 12 is suitable for producing in the space 15 between roller 13 and flow surface 12 the thin slice effect.In Fig. 1 a, the degree of depth of groove and blind hole is represented by dotted lines.Instead, through hole passes the housing extension (not shown) of roller.
According to the utility model, the profile of flow surface 12 is basically identical with the curvature on the surface that will be scratched.In other words, according to the utility model, the flow surface of scraper device meets the curvature of roller shell with respect to the angle on the surface that will be scratched, thereby increases obviously slowlyer than prior art.So, can produce vacuum than larger in the past distance, the vacuum of perhaps avoiding at least having produced is revealed prematurely.In other words, distance and time significantly increase the impact of vacuum.Utilization has avoided suction roll or fluted roller to be made dirty according to scraper device of the present utility model, has improved simultaneously water removal effect.In addition, need not to have realized satisfactorily effect in the compressed-air actuated situation, this has saved energy significantly.By simply will according to scraper device of the present utility model be positioned at the surface band opening roller near, can be easily and improve at low cost existing scraper device.This improvement can be carried out in the situation that change capital equipment or do not produce expense need not.
The suitable flow surface profile consistent with the curvature of roller can be realized in a different manner.The elementary contour of flow surface can be substantially spill.In addition, the curvature of flow surface preferably changes by this way, and this mode is that the radius of curvature of flow surface 12 increases after tip 11 to some extent.In other words, the formed profile of part that is positioned to closely follow after the tip of tip and flow surface makes it possible to as far as possible effectively realize the thin slice effect.In Fig. 1 a, the radius of curvature r of the initial part of flow surface 12 is less with respect to the back-page radius of curvature R of flow surface 12.That is, preferably r＜＜R, thereby so that R is consistent with the radius of the roller that will be scratched.In practice, the decline of flow surface even can be almost straight or evenly launch.After initial part, the radius of curvature of flow surface increases to form long retaining zone to some extent.Yet, be necessary to make flow surface on the whole width of scraper device the direction of rotation of roller (that is, along) very near the roller surface.Like this, avoided formed vacuum effect seepage.The curvature of flow surface is suitable for making from the water with the surface removal of opening and enters between roller surface and the scraper device, and and then it is moved apart roller.Therefore, in practice, the size of scraper device and position are depended on roller and are present in it with the amount of the water on the surface of opening.In the simplest situation, scraper device 10 is formed doctor blade 16.In other words, for example the scraper device is a global facility (not shown) that supports by suitable knife rest.When the time spent of doing of playing doctor blade, the tip of scraper device 11 consists of blade edge, and it is scraped from the roller surface and dewaters and the material on loose roller surface.After the edge, the vacuum that flow surface forms is from the surface removal water with opening of roller.The application scheme of doctor blade is by scraper device 10 expressions of the right-hand side of Fig. 1 a.
The scraper device 10 of the left-hand side of Fig. 1 a is the former application-specific scheme.Here, tip 11 also consists of blade edge.In addition, scraper device 10 comprises the blade element 17 that is positioned at after the flow surface 12, and this blade element 17 is one-body molded with scraper device 10 here.Prevent water return aperture or groove by the vacuum removal immediately following scraper vacuum area after.The scraper device also is provided with the runner 18 for discharge water.Utilize this scraper device, can in short distance, realize effectively dewatering.In practice, this application scheme even can replace known pair of scraper, this has saved the quantity of installing space and spare part widely.
Scraper device shown in Fig. 1 a can be strengthened composite plastic by for example plastics or fiber and make.As the replacement scheme of sharp-pointed blade edge, can also use rounding or even the tip of skid shape (skid-like), this tip contacts slightly with the roller surface.When except outlet capacity during mainly based on the thin slice effect, the wearing and tearing on scraper device and the surface that will be scratched are avoided.Especially, in fluted roller, vacuum can be by the groove seepage of below, tip, and this can weaken except outlet capacity.Yet, according to scraper device of the present utility model except outlet capacity very high so that by adjusting process, groove can be filled up by the water before the scraper device.So the water that is present in the groove can play the effect of sealing, thereby prevent that vacuum is from the below seepage of tip.Yet because effective vacuum effect, the material of water and conveying is discharged from groove, hole and hole.
Fig. 1 b shows the embodiment according to doctor blade device of the present utility model.Here, near the roller 13 of the surface band opening in being included in fiber web machine, be provided with two scraper devices 10, each scraper device 10 includes thereafter the tip 11 followed by flow surface 12, be used for during roller 13 rotations, producing the thin slice effect, thereby be used for removing water (Fig. 2) from the surface 14 with opening of roller 13.One in two scraper devices can be substituted by traditional doctor blade, perhaps by for example substituting according to scraper device of the present utility model shown in Fig. 1 a.Yet here, the guide structure 19 that forms flow surface 12 is arranged in the doctor blade 16.In other words, independent guide structure can unexpectedly be connected to traditional doctor blade itself, is used to form functional flow surface.This combination has been shown in the partial enlarged drawing of Fig. 2.Here, traditional doctor blade 16 is supported to traditional blade holder 20, is connected to this doctor blade 16 according to guide structure 19 of the present utility model.
The design of guide structure can different application modes change.Preferably, scraper device 10 comprises regulator 21, and this regulator 21 is for the distance on the surface 14 of the profile of adjusting flow surface 12 and/or flow surface 12 and roller 13.In the embodiment of Fig. 2, regulator 21 is comprised of the support arm 22 along different direction settings, and these support arms 22 are connected to doctor blade 16 and guide structure 19.Support arm 22 is provided with above-mentioned regulator 21, utilizes this regulator 21 can change the length of support arm 22.Simultaneously, change profile and the distance of flow surface 12.By suitable adjustment, guide structure is sealed to doctor blade and the connector or the seal that need not to add.Such structure can form in existing scraper device even in this doctor blade.In addition, during allowing blade replacement more, guide structure can be removed and again is installed on the new doctor blade.In Fig. 2, the flow surface after the tip 11 is not smooth, but is comprised of the part of doctor blade 16 and the part of guide structure 19.Although be angle shape, but still effective thin slice effect can be produced, one section very long distance can be extended by its vacuum effect that forms.Because guide structure always separates with the surface of roller, so guide structure almost can be made by any material.Yet preferably, guide structure has pliability to a certain degree, so that can change by regulator shape and the distance of guide structure.
Although known flake blade is wider, the effective length of its flow surface is very short.For example, widely only can realize being about the vacuum effect of 15mm for the flake blade of 100mm, this is linear in practice.Scheme as an alternative, according to the utility model, the effective length of flow surface is 50-200mm, more preferably is 100-150mm.So vacuum effect extends to quite long distance, thereby increased the water of removing.In practice, vacuum effect extends to the end of flow surface, thus so that the consistent size along machine direction of the effective length of flow surface and scraper device.Except the length of flow surface, the distance on flow surface and roller surface is to the generation of vacuum effect and continue also influential.According to the utility model, flow surface 12 is 2-10mm with the distance on the surface of roller 13, more preferably is 4-8mm.So in practice, attempt flow surface is positioned to as close as possible roller.So vacuum effect can be kept in long as far as possible distance.Yet, must be noted that from the water with the surface removal of opening to enter the formed space, and can not turn back in hole or the groove.Preferably, the scraper device is positioned so that water drips because of gravity after flow surface.For example, suction roll is provided with the catch tray of oneself, and water flows to the dish of squeezer from fluted roller simultaneously, and further flows to drainage equipment.
Claims (13)
1. the scraper device that is used for fiber web machine, this scraper device (10) comprises thereafter the tip (11) followed by flow surface (12), for generation of the thin slice effect, it is characterized in that the profile of this flow surface (12) is basically identical with the curvature on the surface that will be scratched.
2. scraper device according to claim 1 is characterized in that, this flow surface (12) is substantially spill by this way, and this mode is that the radius of curvature of this flow surface (12) increases afterwards to some extent in this tip (11).
3. scraper device according to claim 1 and 2 is characterized in that, this scraper device (10) is formed doctor blade (16).
4. scraper device according to claim 3 is characterized in that, is provided with the guide structure (19) that forms this flow surface (12) in this doctor blade (16).
5. scraper device according to claim 1 and 2 is characterized in that, this scraper device (10) comprises and is positioned at this flow surface (12) blade element (17) afterwards.
6. scraper device according to claim 1 and 2 is characterized in that, the effective length of this flow surface (12) is 50-200mm.
7. scraper device according to claim 6 is characterized in that, the effective length of this flow surface (12) is 100-150mm.
8. the doctor blade device in the fiber web machine, the roller (13) that comprises the surface band opening, near this roller (13), be provided with scraper device (10), this scraper device (10) comprises thereafter the tip (11) followed by flow surface (12), be used for during this roller (13) rotation, producing the thin slice effect, thereby be used for removing water from the surface with opening (14) of this roller (13), it is characterized in that the profile of this flow surface (12) is basically identical with the curvature on the surface (14) of the roller (13) that will be scratched.
9. doctor blade device according to claim 8 is characterized in that, this flow surface (12) is 2-10mm with the distance on the surface (14) of this roller (13).
10. doctor blade device according to claim 9 is characterized in that, this flow surface (12) is 4-8mm with the distance on the surface (14) of this roller (13).
11. each described doctor blade device in 10 according to claim 8, it is characterized in that, this doctor blade device (10) comprises regulator (21), and this regulator (21) is for the distance on the surface (14) of the profile of adjusting this flow surface (12) and/or this flow surface (12) and this roller (13).
12. each described doctor blade device in 10 is characterized in that according to claim 8, is included in this scraper device (10) in this doctor blade device and is according to claim 2 each described scraper device in 7.
13. doctor blade device according to claim 11 is characterized in that, is included in this scraper device (10) in this doctor blade device and is according to claim 2 each described scraper device in 7.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20095815A FI20095815A (en) | 2009-07-29 | 2009-07-29 | Scraping tool for fiber web machine and scraper assembly on fiber web machine |
| FI20095815 | 2009-07-29 | ||
| PCT/FI2010/050608 WO2011012772A1 (en) | 2009-07-29 | 2010-07-27 | Doctoring device for a fiber web machine and a doctor arrangement in a fiber web machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202786962U true CN202786962U (en) | 2013-03-13 |
Family
ID=40935892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010900010329U Expired - Lifetime CN202786962U (en) | 2009-07-29 | 2010-07-27 | Scraper tool for fiber web machine and scraper device for fiber web machine |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN202786962U (en) |
| DE (1) | DE212010000109U1 (en) |
| FI (1) | FI20095815A (en) |
| WO (1) | WO2011012772A1 (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2030612B (en) * | 1978-10-03 | 1983-07-27 | Eddy Forest Products Ltd E | Doctor blade drying or sealing assembly |
| CA1168494A (en) * | 1980-06-02 | 1984-06-05 | Victor E. Hansen | Method and apparatus for improving the operation of a twin wire paper former |
| FI87095C (en) | 1990-06-11 | 1992-11-25 | Valmet Paper Machinery Inc | Sawdust for a suction drum |
| US5830322A (en) * | 1996-02-13 | 1998-11-03 | Thermo Fibertek Inc. | Velocity induced drainage method and unit |
| FI3818U1 (en) * | 1998-10-22 | 1999-03-16 | Valmet Corp | A joist bar associated with a roller or cylinder in a paper machine or cardboard machine |
| FI20010563A (en) | 2001-03-20 | 2002-09-21 | Runtech Systems Oy | Apparatus and method for treating roll surfaces and / or cloths |
| JP2003064593A (en) * | 2001-08-24 | 2003-03-05 | Mitsubishi Heavy Ind Ltd | Former for papermaking |
| DE102004048517A1 (en) * | 2004-10-06 | 2006-04-13 | Voith Paper Patent Gmbh | Gap between scraper blade and rotating paper-making drum is adjusted by release of fluid between drum and blade-holder block |
| DE602006002039D1 (en) * | 2006-12-04 | 2008-09-11 | C B G Acciai S R L | Pre-scoop blade with curved lamellar profile and manufacturing process for the doctor blade |
-
2009
- 2009-07-29 FI FI20095815A patent/FI20095815A/en not_active IP Right Cessation
-
2010
- 2010-07-27 CN CN2010900010329U patent/CN202786962U/en not_active Expired - Lifetime
- 2010-07-27 WO PCT/FI2010/050608 patent/WO2011012772A1/en active Application Filing
- 2010-07-27 DE DE212010000109U patent/DE212010000109U1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011012772A1 (en) | 2011-02-03 |
| FI20095815A0 (en) | 2009-07-29 |
| DE212010000109U1 (en) | 2012-04-20 |
| FI20095815A (en) | 2011-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: VALMET (CHINA) CORP. Free format text: FORMER OWNER: VEIMEIDE TECHNOLOGY CO., LTD. Effective date: 20150421 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: VEIMEIDE TECHNOLOGY CO., LTD. Free format text: FORMER NAME: METSO PAPER INC. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; TO: 201809 JIADING, SHANGHAI |
|
| CP03 | Change of name, title or address |
Address after: Espoo, Finland Patentee after: VALMET TECHNOLOGIES OY Address before: Helsinki Patentee before: METSO PAPER, Inc. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150421 Address after: Jiading District Xuhang town Baofeng road 201809 Shanghai City No. 688 Patentee after: VALMET (CHINA) Co.,Ltd. Address before: Espoo, Finland Patentee before: VALMET TECHNOLOGIES OY |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |