CN107208374A - The equipment dried for paper and the method for cleaning the equipment - Google Patents
The equipment dried for paper and the method for cleaning the equipment Download PDFInfo
- Publication number
- CN107208374A CN107208374A CN201580074013.6A CN201580074013A CN107208374A CN 107208374 A CN107208374 A CN 107208374A CN 201580074013 A CN201580074013 A CN 201580074013A CN 107208374 A CN107208374 A CN 107208374A
- Authority
- CN
- China
- Prior art keywords
- passage
- nozzle passage
- guide plate
- nozzle
- perforate
- 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.)
- Granted
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/04—Drying on cylinders on two or more drying cylinders
- D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
- D21F5/044—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices using air hoods over the cylinders
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/18—Drying webs by hot air
- D21F5/181—Drying webs by hot air on Yankee cylinder
Landscapes
- Paper (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a kind of nozzle passage (1), for gaseous medium to be applied into strip material, especially paper web, board web, thin page width or paper pulp width, the nozzle passage (1) includes the passage body (2) with multiple nozzles (3) and is arranged on the internal guide plate of passage body (2) (4,4a), wherein, device is set in the nozzle passage (1), at least some, preferably whole guide plates (4,4a) can be removed and reinstalled from nozzle passage (1) in a straightforward manner using the device.A kind of drying hood applied in the machine for drying strip material, especially raise base cover, wherein, the drying hood include at least one, preferably multiple nozzle passages (1) according to the present invention.One kind includes step for maintaining the method for nozzle passage (1) or drying hood：Guide plate (4,4a) is removed from passage body (2) by the perforate (5) of at least one side, nozzle passage (1) is maintained by the perforate (5) of at least one side, inserted guide plate (4,4a) in passage body (2) by the perforate (5) of at least one side.
Description
The present invention relates to a kind of preamble according to claim 1 be used for by gaseous medium be applied to strip material,
Such as nozzle passage (1) on paper web, board web, thin page width or paper pulp width, a kind of use of preamble according to claim 8
It is a kind of according to claim 11 to be used to maintain the side of nozzle passage in applying the drying hood in the machine for drying strip material
Method and a kind of method according to claim 13 for maintaining drying hood.
In the manufacture of a variety of strip materials, especially in the manufacture of paper web, board web, thin page width or paper pulp width, it is necessary to
These webs are made to undergo at least one drying steps in the fabrication process.Web is generally directed through steam-heated rolling herein
Cylinder.In some applications, for example in the drying of thin page width, it can use and so-called raise base drying.The drying has
2m and the above diameter.In addition, the drying also includes drying hood, the effect of the drying hood is, by hot gas, especially
Hot-air is applied in web.Hot gas generally conducts at this in nozzle passage.Width of the nozzle passage by gas along web
Distribution.The problem of running into herein be, the uneven drying of web and thus web can be caused in gas uneven distribution
Mass defect.
In order to solve the technical problem, in the known in the state of the art of such as US2001/0054239 A1, nozzle passage can
So that with built-in fitting, the built-in fitting makes gas distribution uniformity and and then temperature distribution homogenization.
In addition by WO 2006/057696, it is known that built-in fitting can have the form of guide plate.Guide plate is fixed, is for example welded on
In nozzle passage, and distribution of lengths of the air-flow correspondingly along nozzle passage can be made by the moulding of guide plate.
But shown during the long-play of this drying device, it deposited example on the nozzle of nozzle passage
The dirt such as caused by fiber.This can cause the complete or partial blocking of nozzle over time.Because thus web can be destroyed again
Dry uniformity, so periodically nozzle or nozzle passage must be cleaned or maintained.This is to according to WO 2006/
It is difficult to for the A1 of 057696 or US 2001/0054239 nozzle passage, because generally hardly possible realize warp
The entrance of the input channel of gas is crossed, and laterally entering from the side end of nozzle passage is blocked by built-in fitting and guide plate
Enter.
Therefore the technical problems to be solved by the invention are that, there is provided a kind of drying device, the drying device ensures gas
Distribution of the body on the width of web and and then Temperature Distribution on web width control, and however can also realize
The simple maintenance of nozzle passage.
The technical problem is completely by the nozzle passage of characteristic according to claim 1, according to claim 8
The drying hood of characteristic, the method namely use according to claim 13 according to claim 11 for being used to maintain nozzle passage
Solved in the method for maintenance drying hood.
According to the material for gaseous medium to be applied to banding of the present invention, especially paper web, board web, thin page width or paper
Nozzle passage on pulp web includes passage body and guide plate, and the passage body has big flow nozzle, and the guide plate is arranged on passage
The inside of body.According to the present invention, device is set in nozzle passage, can be in a straightforward manner by least one using the device
A little guide plates, preferably whole guide plates are removed and reinstalled from nozzle passage.
This is not that is, guide plate is welded with passage body or otherwise fixed in the nozzle passage according to the present invention
Ground is connected.
Guide plate can be removed from nozzle passage in a straightforward manner in order to maintain operation in this way, thus
Simplify the maintenance of nozzle passage.After the maintenance end of job, guide plate can be reinstalled in nozzle passage in a straightforward manner.
Gaseous medium can be such as hot-air.In a kind of advantageous embodiment, the temperature of gaseous medium can be with
More than 100 DEG C, especially more than 200 DEG C, advantageously even more than 300 DEG C.
Usual guide plate is mainly made up of metal, especially steel.But within the scope of application, the concept of guide plate should also be managed
Solve the guide plate to be made up of other appropriate materials.Can be for example using polymeric material, fibre-reinforced plastics or pottery for this
Porcelain.
Advantageously, the material selection of guide plate is that the material is in the case of with the gaseous medium durable contact of heat
Also it can keep stable.
The advantageous embodiment of the present invention is described in each dependent claims.
For example it can be stated that guide plate is shape-ordinatedly reversibly connected with passage body in a straightforward manner.A kind of special
In advantageous embodiment, guide plate is connected by clamping connector and passage body phase.
In a kind of advantageous embodiment of nozzle passage, passage body is on its at least one side, preferably at two
There is perforate respectively on side, can be by least some, preferably whole guide plates in a straightforward manner from nozzle by the perforate
Remove and reinstall in passage.
Additionally it can be stated that setting closing cap respectively at least one side, preferably on two sides.The closing
Cover the closing of the perforate for side.The gas in the running of nozzle passage is thus avoid to escape from the perforate of side,
But then still can be by guide plate is by the perforate taking-up of side and reinstalls for maintenance.
In a kind of particularly preferred embodiment of the present invention, the device for simply removing guide plate includes at least one
Common carrier element.At least one guide plate, preferably multiple guide plates, particularly preferably whole guide plates utilize the common carrier member
Part is connected.
According to the difference of embodiment, guide plate can rigidly or movably be connected with the common carrier element.
Common carrier element can be such as rod member, pipe fitting or lath, and carrier element common in other words can include
The one or more parts namely rod member, pipe fitting or lath.
And common carrier element is not welded regularly generally with passage body.
Common carrier element is advantageously designed to herein, carrier element can be easily accessible by the perforate of side or
Person, which says, to be caught., can in a straightforward manner will be all first with carrier by the way that perforate of the common carrier element through side is pulled out
The connected guide plate of part is removed by simple mode from nozzle passage.In the same way, guide plate can be in maintenance operation
Reinstall afterwards and enter nozzle passage.
It is frequently advantageous that, whole guide plates is fixed on common carrier element in order to simplify operation.This carrier member
Part extends substantially in the whole length of nozzle passage.But multiple common carrier elements can also be set.Therefore individual
It will be advantageous that in the case of not, two common carrier elements be set, wherein, each carrier element is substantially in nozzle passage
Extend in half length.Therefore, one common carrier element can be gone by the perforate of a side to carry out maintenance
Remove, and another common carrier element is removed by the perforate of another side.
In other advantageous embodiments, a part of guide plate, preferably whole guide plates are embodied as baffle plate.Pass through the baffle plate
By nozzle passage along its length, namely along the width of web, it is divided into multiple single sections.
In addition it is used to apply for drying banding web, especially paper web, board web, thin page width the invention further relates to one kind
Or the drying hood in the machine of paper pulp width.For example it is Yang Ji covers herein, it is for example applied in the manufacture of tissue paper.According to this hair
Bright drying hood is characterised by, drying hood includes at least one, preferably multiple according to any one of claim 1 to 7
According to the present invention nozzle passage.
It can be stated that drying hood is logical including primary input in a kind of advantageous embodiment of the drying hood according to the present invention
Road and at least one, preferably two or multiple assignment channels.Hot gas is imported in drying hood at this by primary input passage,
And give different nozzle passages by hot air distribution by one or more assignment channels.
In a kind of particularly preferred embodiment, at least one assignment channel is embodied as the shape of bending.
In addition it is used to maintain according to the present invention according to any one of claim 2 to 7 the invention further relates to a kind of
The method of nozzle passage.Methods described comprises the following steps herein：
A) guide plate is removed from passage body by the perforate of at least one side,
B) nozzle passage is maintained by the perforate of at least one side,
C) guide plate is inserted in passage body by the perforate of at least one side.
Nozzle passage can be maintained by the method according to the invention under loading state.Nozzle passage be not necessarily this from
It is fitted into occasion, for example removed from drying hood.
When setting closing cap at nozzle passage, closing cap will be generally removed to before process a) makes at least one
The degree of the perforate exposure of individual side, so as to be removed guide plate by the perforate.
When setting a common carrier element, the carrier element is advantageously arranged to herein, and the carrier element can
Easily it is accessible and is caught in other words by the perforate of side.For example can be by first by common carrier in process a)
Part by the perforate of side pull out and in a straightforward manner by the guide plate being all connected with common carrier element from nozzle passage
It is middle to remove.Guide plate can equally be reinstalled after maintenance operation in step c) by this way and enter nozzle passage.
In a kind of advantageous embodiment of methods described, the maintenance operation in step b) can include logical to nozzle
The cleaning of some or all nozzles in road or the cleaning of some or all nozzles by nozzle passage are constituted.
Finally, the invention further relates to a kind of method for maintaining drying hood.Drying hood is herein according to claim 8 to 10
Any one of implement, and include maintenance at least one nozzle passage, the guarantor for the method for maintaining drying hood
Support and completed by according to the methods described of claim 11 or 12.
The present invention is expanded on further below by the accompanying drawing being schematically not drawn to scale.
Fig. 1 schematically shows the sectional side elevation through baffled nozzle passage according to prior art；
Fig. 1 b schematically show the sectional side elevation through the nozzle passage with guide plate according to prior art；
Fig. 2 schematically shows the sectional side elevation through baffled nozzle passage according to the present invention；
Fig. 2 b schematically show through according to the present invention the nozzle passage with guide plate sectional side elevation, the guide plate its
In one be embodied as baffle plate；
Fig. 3 shows the cross sectional view through the nozzle passage according to the present invention；
Fig. 4 shows the profile through drying hood.
The sectional view of the length L along the nozzle passage according to prior art is shown respectively in Fig. 1 and Fig. 1 b.Nozzle passage
1 includes two respectively is used for the intake line 9 of the hot gas from assignment channel 9.The gas is logical from nozzle by nozzle 3
Road 1 is discharged, and is applied in web.Guide plate 4,4a are embodied as baffle plate 4a in the nozzle passage 1 shown in Fig. 1.Baffle plate 4a with
Passage body 2 is regularly connected.Usual baffle plate 4a is welded with passage body 2.Fig. 1 b show nozzle passage 1, in the nozzle passage
Baffle plate is regularly welded on passage body at center.In addition, nozzle passage 1 is additionally provided with other guide plates 4, the guide plate will be from
Intake line 9 enters length L distribution of the fluid of nozzle passage 1 along nozzle passage 1.And the guide plate 4 is also solid with passage body 2
Surely it is connected.
The cleaning of the maintenance of nozzle passage 1, especially nozzle 3 is only capable of by input pipe in the case of shown in Fig. 1 and Fig. 1 b
The entrance on road 9 is realized, and is additionally hindered by guide plate 4,4a.
The nozzle passage 1 according to the present invention is shown respectively in Fig. 2 and Fig. 2 b.And it is the importing of gaseous medium herein, preferably hot
The intake line being directed through from assignment channel 9 of air is realized.Gas discharged from nozzle passage 1 by nozzle 3 and
It is applied on web, such as thin page width, paper pulp width or similar material width.Nozzle passage 1 shown in Fig. 2 includes such as four guide plates
4th, 4a, four guide plates are all embodied as baffle plate 4a.Nozzle passage 1 is divided into multiple sections 8 by baffle plate 4a.According to application scenario
Difference, especially additionally depend on the length L of nozzle passage 1 and the quantity of assignment channel 9, more or fewer can also be set
Guide plate.Baffle plate 4a is not connected regularly with passage body 2 in fig. 2.Guide plate is not especially welded or is threadedly coupled with passage body 2.With
This is differently it can be stated that baffle plate 4a shape-ordinatedly or with small gap is pushed into nozzle passage 1.Baffle plate 4a is all fixed
On a common carrier element 7.Carrier element 7 includes pipe fitting, especially steel pipe in fig. 2, and the pipe fitting is generally in spray
The approximate centre of mouth passage.But it is also feasible that common carrier element 7 includes rod member or lath, or by rod member or lath
Constitute.Common carrier element 7 extends in the embodiment shown in Figure 2 on the whole length L of nozzle passage 1.But according to
The present invention can be also to provide, carrier element extends only in a length L part.For example it is also contemplated that setting two
Common carrier 7, described two common carriers extend in length L half respectively.
Nozzle passage 1 shown in Fig. 2 b includes such as five guide plates 4,4a, and one of guide plate is embodied as baffle plate 4a, and
And other guide plates are embodied as baffle plate 4.Common carrier element 7 for example only prolongs in the length L of nozzle passage 1 part herein
Stretch, but can also extend in other embodiments on whole length L, using the common carrier element by baffle plate 4a
It is connected with remaining guide plate.Common carrier element 7 is placed in outside the center of nozzle passage 1 in figure 2b.According to the present invention also
It can be stated that the part of common carrier element 7 carrier element in other words is arranged on the wall of passage body 2 or near wall.
There is the perforate 5 of side according to Fig. 2 and 2b nozzle passage 1 on two sides, the perforate is closed respectively
Lid 6 is closed.It may further specify that in other advantageous embodiments, the opening with side only on a side of nozzle passage 1
Hole 5.By opening closing cap 6 the perforate 5 of side can expose.Therefore, for the maintenance of nozzle passage 1, especially nozzle 3
Cleaning, can be removed from nozzle passage 1 guide plate 4,4a by the perforate 5 of side.Meet purpose, common load herein
Body 7 is set to, and the common carrier can be grasped by the perforate 5 of side.Therefore the possibility of presence is, common
Carrier 7 is pulled out or removed from nozzle passage 1 together with fixed guide plate 4,4a on the carrier.
Guide plate 4,4a or especially baffle plate 4a can be rigidly attached according to the present invention with common carrier element 7.But make
Alternatively to may further specify that, plate 4,4a are movably connected with carrier element.It is therefore advantageous that plate 4,4a are provided with valve machine
Structure, more easily removes or installs to be realized in nozzle passage.
Fig. 3 is shown through the cross section of the nozzle passage 1 according to the present invention.Baffle plate 4a is generally in the whole of passage body 2
Therefore extension simultaneously divides the whole cross section of passage body 2 on cross section.Rod member is for example set to common carrier element herein
7, the rod member is placed in the center of passage body 2.In this embodiment using the common carrier element 7 by guide plate rigidly
It is fixed.
Schematically show in Fig. 4 through the drying hood according to the present invention, especially raise the possible embodiment of base cover
Profile.Drying hood also includes two assignment channels in addition to primary input pipeline 10, and the assignment channel is embodied as deviously
The shape of so-called " crescent moon head ".Gas medium is distributed to multiple single nozzle passages 1 by assignment channel 9.Herein at least one
Nozzle passage 1, preferably all nozzle passages 1 are embodied as the nozzle passage 1 according to the present invention.
Claims (13)
1. a kind of nozzle passage (1), for gaseous medium to be applied into strip material, especially paper web, board web, thin page width or paper
On pulp web, the nozzle passage (1) includes passage body (2) and guide plate (4,4a), and the passage body (2) has multiple nozzles
(3), the guide plate is arranged on the inside of passage body (2), it is characterised in that device is set in the nozzle passage (1), using described
Device can remove from nozzle passage (1) at least some, preferably whole guide plate (4,4a) and again in a straightforward manner
Install.
2. nozzle passage (1) according to claim 1, it is characterised in that passage body (2) has on its at least one side
There is perforate (5), can be by least some, preferably whole guide plate (4,4a) in a straightforward manner from nozzle by the perforate (5)
Remove and reinstall in passage (1).
3. the nozzle passage (1) according to any one of the claims, it is characterised in that at least one side, excellent
It is selected on two sides and closing cap (6) is set respectively.
4. the nozzle passage (1) according to any one of the claims, it is characterised in that for simply removing guide plate
The device of (4,4a) includes at least one common carrier element (7), and at least one guide plate (4,4a), preferably multiple guide plates
(4,4a), particularly preferably whole guide plates (4,4a) are connected with common carrier element (7).
5. nozzle passage (1) according to claim 4, it is characterised in that at least a portion guide plate (4,4a), preferably whole
Guide plate (4,4a) rigidly or is movably connected with common carrier element (7).
6. the nozzle passage (1) according to claim 4 or 5, it is characterised in that common carrier element (7) include rod member,
Pipe fitting or lath, or be made up of rod member, pipe fitting or lath.
7. the nozzle passage (1) according to any one of the claims, it is characterised in that at least a portion guide plate (4,
4a), preferably whole guide plate (4,4a) is embodied as baffle plate (4a), and nozzle passage (1) is divided into multiple sections by the baffle plate
(8)。
8. a kind of drying hood applied in the machine for drying strip material, especially raise base cover, it is characterised in that described dry
It is dry cover include at least one, preferably multiple nozzle passages according to any one of claim 1 to 7 (1).
9. drying hood according to claim 8, it is characterised in that drying hood includes primary input passage (10) and at least one
Individual, preferred two or more assignment channels (9).
10. drying hood according to claim 9, it is characterised in that at least one assignment channel (9) has the shape of bending
Shape.
11. a kind of method for being used to maintain the nozzle passage (1) according to any one of claim 2 to 7, its feature exists
In methods described includes step：
B) guide plate (4,4a) is removed from passage body (2) by the perforate (5) of at least one side,
C) nozzle passage (1) is maintained by the perforate (5) of at least one side,
D) guide plate (4,4a) is inserted in passage body (2) by the perforate (5) of at least one side.
12. method according to claim 11, it is characterised in that the maintenance of nozzle passage (1) is included to some or all
The cleaning of nozzle (3) is made up of the cleaning to some or all nozzles (3).
13. a kind of method for maintaining drying hood, it is characterised in that the drying hood is real according to one of claim 8 to 10
Apply, and include maintenance at least one nozzle passage for the method for maintaining drying hood, to the maintenance of nozzle passage according to
Method described in claim 11 or 12 is completed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014225970.3 | 2014-12-16 | ||
| DE102014225970 | 2014-12-16 | ||
| PCT/EP2015/074345 WO2016096202A1 (en) | 2014-12-16 | 2015-10-21 | Device for paper drying and method for cleaning it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107208374A true CN107208374A (en) | 2017-09-26 |
| CN107208374B CN107208374B (en) | 2019-09-03 |
Family
ID=54337763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580074013.6A Active CN107208374B (en) | 2014-12-16 | 2015-10-21 | The equipment dry for paper and the method for cleaning the equipment |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3234258A1 (en) |
| CN (1) | CN107208374B (en) |
| WO (1) | WO2016096202A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3012335A (en) * | 1957-11-16 | 1961-12-12 | Svenska Flaektfabriken Ab | Treating web-like material by a gaseous medium |
| US5070627A (en) * | 1990-01-16 | 1991-12-10 | W. R. Grace & Co.-Conn. | Directional diffusion nozzle air bar |
| CA2300839A1 (en) * | 2000-03-17 | 2001-09-17 | Asea Brown Boveri Inc. | Thermal equalizer |
| WO2006057696A2 (en) * | 2004-11-22 | 2006-06-01 | Metso Paper Usa, Inc. | Nozzle insert for a yankee impingement hood |
| CN203807883U (en) * | 2014-04-28 | 2014-09-03 | 彭锦铜 | Bore type partitioned air regulation air cover |
-
2015
- 2015-10-21 CN CN201580074013.6A patent/CN107208374B/en active Active
- 2015-10-21 EP EP15784031.5A patent/EP3234258A1/en active Pending
- 2015-10-21 WO PCT/EP2015/074345 patent/WO2016096202A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3012335A (en) * | 1957-11-16 | 1961-12-12 | Svenska Flaektfabriken Ab | Treating web-like material by a gaseous medium |
| US5070627A (en) * | 1990-01-16 | 1991-12-10 | W. R. Grace & Co.-Conn. | Directional diffusion nozzle air bar |
| CA2300839A1 (en) * | 2000-03-17 | 2001-09-17 | Asea Brown Boveri Inc. | Thermal equalizer |
| WO2006057696A2 (en) * | 2004-11-22 | 2006-06-01 | Metso Paper Usa, Inc. | Nozzle insert for a yankee impingement hood |
| CN203807883U (en) * | 2014-04-28 | 2014-09-03 | 彭锦铜 | Bore type partitioned air regulation air cover |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3234258A1 (en) | 2017-10-25 |
| CN107208374B (en) | 2019-09-03 |
| WO2016096202A1 (en) | 2016-06-23 |
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