CN101341291A - Arrangement and methods for increasing productivity of a paper machine or minimizing its dimensions - Google Patents
Arrangement and methods for increasing productivity of a paper machine or minimizing its dimensions Download PDFInfo
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- CN101341291A CN101341291A CN200680048052.XA CN200680048052A CN101341291A CN 101341291 A CN101341291 A CN 101341291A CN 200680048052 A CN200680048052 A CN 200680048052A CN 101341291 A CN101341291 A CN 101341291A
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Images
Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/14—Making cellulose wadding, filter or blotting paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/36—Guiding mechanisms
- D21F1/40—Rolls
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/14—Making cellulose wadding, filter or blotting paper
- D21F11/145—Making cellulose wadding, filter or blotting paper including a through-drying process
-
- 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
- D21F3/08—Pressure rolls
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
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- Paper (AREA)
Abstract
The inventive idea is to make the rotating elements or rolls in a tissue papermaking machine with a reduced weight comparing to the conventional rolls made of steel. In this manner the rolls create less vibrations and allow sufficiently increase of the operation speed and productivity of the entire machine, or reduce the machine dimension for a given operation speed comparing to the conventional solutions. The invention is applicable to rebuilds of the existing machines and for new high-speed installations.
Description
Technical field
The present invention relates to a kind of apparatus and method, be used for making minimum vibration and/or under the situation that does not change productivity ratio, reducing machine dimensions with the cost effective and efficient manner by increasing the productivity ratio that service speed improves paper machine.
Background technology
Machine productivity, the paper amount that can produce in preset time depend on multiple factor, such as machine-wide and process velocity thereof.The weight of the spinner member of rack-mounted roller (especially such as) increases because all machine elements in the increase of machine-wide, can produce many technical problems.These elements rotate at a high speed owing to big quality and can produce vibration, and these vibrations can limit the increase of service speeds and the production of entire machine as a result.Describe this problem in the PCT/FI2005/050092 communique and utilized special roll structure to solve this problem.
Traditional paper machine comprises a large amount of different rotary elements, such as to the paper web of different brackets and quality and the plate width of cloth (board web) and/or realize the roller that the paper machine clothing of papermaking purpose supports in different paper machine parts.As described below, in each machine part, different rollers has different functions and different positions.
The direction of motion that deflector roll or guide reel are used to support paper web or machine net blanket or are used to change paper web, net, fabric or felt.Guide rolls support is used at shaped portion, dehydration part, crimping section, drying nest and alternatively at many fabrics of the paper web of winding part manufacturing.
Idler roller is a deflector roll, is used for automatically regulating the tension force of the paper making felt of net or other types.
Worm felt roll is as adjustable deflector roll, and it stretches net blanket or net, thereby makes idler roller can realize its purpose.
Spread rolls makes mobile net, felt, fabric or paper web smoothly and therefore prevent to produce vertical fold at horizontal direction.
Alignment rolls is adjustable deflector roll, is used to guide described net or blanket.
Forming rolls or breast roll are the deflector roll of net, two net or other types former in the shaped portion that supports fourdrinier machine, and change the direction of motion of net before shaped region is tight.
Pressure roller is used in the roll press or with acting on paper web is sent to another surface so that the transfer roller of further processed from a surface.
Above-described all traditional rollers have different functions, but except some considerably less exceptions (such as the suction pressure roller), usually have more or less identical design, and generally include to have and be used for via bear box or other suitable components two flanges of the rack-mounted axle of roller and the shell that these flanges are linked into an integrated entity at equipment.This shell can be different from mode described herein and is connected on the flange with multiple.Outer casing thickness can change in the scope of broad, and roller inside is generally hollow to reduce the weight of roller.Aforesaid all traditional rollers are formed from steel usually by metal.
Papermaking function now is with about 800 to the 1200m/min speed operations of the most about 2200m/min extremely.For given frame dimensions, the restriction that the further increase of machine speed is vibrated, these vibrations cause that by the rotation of the steel rider of a large amount of Different Weight these rollers are installed on the frame, are mainly used in and are supported on the different fabrics that use in the paper-making process.This structure is very expensive.
For example, the weight of traditional steel deflector roll according to its length (can between 1 to 9m) can for 900 to 10000 kilograms and diameter between 300 to 1200mm.
These vibrations that caused by the rotation of these rollers are through frames diffusion and can also be by the fabric transmission.When roller arrives its critical frequency (this may cause the destruction of rotating roller and other equipment), threshold vibration makes machine speed and productivity ratio further not to increase.Usually, the inboard to these steel riders does not process because do so very expensive, thereby in order not cause trouble only to allow of 1/2 operation of steel rider maximum with himself critical speed.Steel rider generally has remaining out-of-balance force (residual unbalance), and this makes the frame vibration that roller is arranged to be installed on it again.
Therefore, well known in the art is that because the vibration and the bending parameters of the roller of rotation (wherein as being used for the deflector roll of net blanket), the process velocity of existing paper machine can not be improved.
Trial reduces its weight by the diameter that reduces the steel deflector roll, but this can reduce its critical speed and increase undesirable bending.Now, for example in drying nest, the steel deflector roll turns round with approximately half critical speed, and therefore they can cause vibration.Even the remaining out-of-balance force of roller also can cause undesirable vibration.
Aforesaid vibration because different elements (such as, drying, deflector roll, guide reel, forming rolls etc.) rotation and produce in the different piece of paper machine.Vibration can be transmitted by entire machine via the framework that spinner member is installed on it, and by with loop around the net blanket of spinner member running or pass through machine base.Spinner member is made by metal material, is formed from steel usually and therefore very heavy.The heavy element of these rotations has remaining out-of-balance force usually on being installed in bearing structure or framework the time, and therefore when when rotating at a high speed, these elements produce the power with corresponding frequencies and therefore also produce and vibrate.These power can be calculated according to formula (1):
(1) F=1/2S * M * (2 π f)
2, wherein
The power that F-produces
The M-gyrating mass
S-is according to the out-of-balance force of roller self and total out-of-balance force of installation thereof
The f-speed
The traditional solution of bending problem is the diameter that increases steel rider, to realize higher rigidity and the critical speed of Geng Gao.Sometimes, can also increase shell wall thickness, to realize higher rigidity and therefore can also reduce deflection.This causes the weight of roller to increase, and inertia and corresponding out-of-balance force increase, thereby requires the machine bearing frame is made amendment (this is normally undesirable), because the quality of the heavy more framework that just requires to be used to support them of roller is big more.Because downtime and production loss, generally not wish to carry out framework yet and revise, framework revises because Master Cost and quite expensive.
Optionally, when machine speed and productivity ratio are satisfactory, wish to reduce machine dimensions so that new installation or transformation, self frequency of roller, their bending parameters and the restriction of the problems such as vibration that cause are as mentioned above rotated in installation that this is new or transformation.
Summary of the invention
The invention provides the solution with self frequency of rotating roller, problem that the vibration that caused by their high speed rotation as mentioned above is relevant, this solution can significantly improve service speed.Optionally, the present invention compares with traditional solution, for given process velocity, can reduce machine dimensions with the cost effective and efficient manner.
Therefore, shown in the formula (1) that illustrates above, the best mode that reduces undesirable exciting force is to reduce gyrating mass, for example by using lightweight material to reduce gyrating mass.Stainless density is about 7800kg/m
3, the density of titanium is about 4500kg/m
3, the density of aluminium is about 2700kg/m
3, and the density of synthetic material (for example carbon or glass fiber reinforced epoxy or other polymer) 1500 to 2000kg/m
3Between.
The weight of the roller of being made by synthetic material, diameter is identical with steel rider only is about 20% to 30% of steel rider weight.Therefore, the feasible exciting force and the vibration that will cause owing to the rotation of roller that reduce greatly of roller weight significantly reduces.
Therefore, the present invention relates to use lightweight roll to guide and/or support net, fabric or other net blankets in the paper machine.Have required bending and hardness parameter, can have littler, an identical even bigger diameter of metallic roll that becomes by steel usually than traditional by the lightweight roll of making than light material.Have the larger-diameter lightweight roll of making by synthetic material and on weight, can be lighter than and have larger-diameter corresponding steel rider, and therefore can use even bigger synthetic roller and still can realize reducing of exciting force.The weight saving of roller makes the rotating speed of roller increase, and can not increase corresponding threshold vibration and therefore increase service speed.According to roller of the present invention, one of described shell and flange or both can make by lightweight material.Optionally, by such as molded, powder compaction conventional methods such as (powder pressing), available lightweight material is made for one with whole roller.
Thereby the present invention can increase the service speed of paper machine and for the new engine of selecting machine-wide and occupation of land total productivity ratio is increased.
The invention still further relates to transformation, to increase speed of production by use lightweight roll in existing space to existing machine.The lightweight roll of being made by synthetic material that is used for more speed does not need to increase the diameter of roller and revise frame, has identical diameter because their size can be decided to be with original traditional steel rider.
The objective of the invention is to reduce the vibration of paper machine by the weight that reduces roller.
A further object of the present invention is the possible productivity ratio that increases machine by the possible rotating speed of the roller that increases the supporting network blanket.
A further object of the present invention is, for given service speed, compares with traditional solution, reduces machine dimensions under the situation that does not change productivity ratio.
Another object of the present invention is, for example, when under the situation that does not increase machine dimensions machine being transformed or using the new engine with the confined space and occupation of land, increases speed of production.
Paper machine comprises many different processing parts, such as shaped portion, dehydration part, drying nest and winding part.Each part includes at least one paper making felt and a plurality of rotation roller.Each roller includes two flanges and makes the interconnective shell of these flanges.Described shell supports described net blanket.Described net blanket turns round around described roller with loop.The diameter of described roller is determined to be and is suitable for required assumed (specified) load, bending and rotating speed.In at least one machine part, the described shell of at least one rotation roller and/or at least one in the flange are made less than the material of steel by density, and therefore make the respective rollers with same size that weighing less than of described roller become by steel.With regard to identical roller size, more low-density optional material makes the weight of every long measure of described roller reduce.
Compare with the weight of the corresponding steel rider with approximately uniform size and identical mechanical parameter, the weight of lightweight roll should reduce at least 10%.In order to obtain significant effect aspect the level of vibration of machine and to allow higher service speed, at least one roller at least one described machine part, or be preferably at least 10% in all rollers and steel rider should be replaced by according to roller of the present invention.
A kind of method that improves the service speed of paper machine, this paper machine has shaped portion at least, the dehydration part, drying nest and winding part, each part includes at least one paper making felt and a plurality of rotation roller, each roller includes two flanges and makes these flanges interconnect and support the shell of described net blanket, described net blanket turns round around described roller with loop, described method comprises the following steps, the shell of traditional steel rotation roller and/or flange or whole roller replaced with made less than the material of steel by density, and have shell and/or the flange or a whole roller of identical mechanical parameter such as crooked and rigidity for required size.
Use lightweight roll to implement by following manner as the method in the paper machine such as deflector roll, worm felt roll etc., to have shell and at least one the traditional steel rotation roller by described shell interconnective two flanges in the cylinder of hollow (be preferably all rotation roller sums at least 10%) and replace with such rotation roller, the weight ratio of this rotation roller is used for the weight little at least 10% at the corresponding steel rider of the identical bending of having of at least one part guiding of paper machine and/or supporting network, fabric or other net blankets and other mechanical parameters.
A kind of method that is used for regard to given process velocity, making the minimized in size of paper machine, this method comprises the following steps, at least one traditional steel at least one part of paper machine rotation roller (be preferably all rotation roller sums 10% to 100%) is replaced with so light-duty rotation roller, in the shell of this roller and two flanges at least one made less than the material of steel by density, and this roller has identical mechanical parameter simultaneously.
A kind of method that is used for when improving service speed, reducing the vibration that paper machine occurs, wherein said machine comprises many different processing parts, each part includes at least one paper making felt and a plurality of rotation roller, each roller all has two flanges and makes these flanges interconnect and support the shell of described net blanket, described net blanket turns round around described roller with loop, described method is implemented in the following way, the shell of steel that at least one is traditional rotation roller (being preferably more than 50% of all rotation roller sums) and at least one in the flange replace with by density and are lower than shell and/or the flange that the material of steel is made, and described roller has the mechanical parameter identical with steel rider simultaneously.
A kind of being used for transforms to improve the method for service speed paper machine in intended size.Described paper machine comprises many different parts, such as shaped portion, dehydration part, crimping section, drying nest and winding part.Each part includes at least one paper making felt and a plurality of steel rotation roller.Each roller all has two flanges and makes these flanges interconnect and support the shell of described net blanket.Described net blanket turns round around described roller with loop, described method comprises the following steps: that the shell of steel that at least one is traditional rotation roller and in the flange at least one replace with by density and is lower than shell and/or the flange that the material of steel is made that described roller has the mechanical parameter identical with steel rider simultaneously.
The use of lightweight roll makes it possible to existing paper machine is transformed and can be increased the speed of existing paper machine, and described lightweight roll is compared littler owing to its diameter with corresponding steel rider and can be assemblied in the existing space.
Should be understood that term used herein " deflector roll " or " guide reel " are not limited in deflector roll or guide reel, but should make an explanation with reference to all the dissimilar rollers or the spinner member that support different net blankets in the above-mentioned paper machine.
Therefore, thought of the present invention is to compare with the corresponding traditional steel rider with same size and mechanical parameter, reduce in the following manner as transporting the also weight of the spinner member of the roller of supporting network, fabric and other net blankets or the paper web and the plate width of cloth, the vibration that makes these rollers produce in machine reduces, thereby can fully increase the speed of roller rotation and the running speed of supported net blanket, and therefore can improve the productivity ratio of entire machine.Describe the present invention below with reference to accompanying drawings in detail.
Description of drawings
Fig. 1 represents the layout of tissue machine, and it has C shape former, green end (wet end), dehydration part and raises base (Yankee) drier.Three net blankets of this machine comprise two forming nets (forming wire) and a dewatering fabrics (dewatering fabric), by guide rolls support according to the present invention.
Fig. 2 represents the layout of tissue machine, and it has crescent former and two net blankets and raises basic drier.This net blanket comprises forming net and dewatering fabrics, by guide rolls support according to the present invention.
Fig. 3 represents the layout of tissue machine, and it has crescent former, raise basic drier and comprise by the winding part according to the net blanket of guide rolls support of the present invention.
Fig. 4 represents optional drying nest, and it comprises that heel has the basic drier of raising of pot type drier.Adopt drying or jar in drying nest, dry fabric turns round around deflector roll according to the present invention.
Fig. 5 represents the cutaway view according to roller of the present invention.This roller has two flanges and a shell.
Fig. 6 A represents the cross section enlarged drawing of traditional steel roll shell, and Fig. 6 B represents the cross section enlarged drawing of synthetic roller shell.
Fig. 7 is the chart that is illustrated in the level of vibration difference [total RMS 2-1000HZ] that is caused by steel deflector roll or synthetic deflector roll in the same position of paper machine.Vibration on the bear box of measuring deflector roll from the different machines speed lower edge machine direction of 1200m/min to 1600m/min.
Fig. 8 is the chart that is illustrated in the same position of paper machine the level of vibration (peak value) that is produced by steel deflector roll and synthetic deflector roll under the speed of respective rollers and twice speed.This chart shows for traditional steel rider (two lines of top) and the peak value level of vibration that produces under the speed of roller and twice speed in the deflector roll position according to lightweight roll of the present invention (two lines of below).In machine, on the bear box of deflector roll and in same roller position, measure described vibration along machine direction.
The specific embodiment
In Fig. 1, show the layout of the machine that is used to make tissue web.This machine has green end 1, and wherein paper web 11 forms in C shape former.Headbox (headbox) 12 is at the outer forming net 13 that is supported by a plurality of deflector rolls 10 and also transmit paper making raw material between the internal shaping net 14 by a plurality of deflector rolls 10 supports.Net 13,14 operations are through so-called forming rolls or breast roll 8.Paper web 11 is formed on the internal shaping net 14.Paper web 11 is dewatered by the part when being between the net 13,14, and paper web 11 is transported fabric 19 by pick device 9 from what outer forming net 14 further was sent to dehydration part 2 then.Pick device 9 can be any device well known in the art.Paper web 11 is by for example dissimilar vacuum suction apparatus well known in the art (such as suction box or vacuum furnace), perhaps be further dehydrated in dehydration part 2 by traditional pressurizing unit of expressed water from wet web 11 alternatively, to improve the degree of drying of paper web 11.Therefore, in dehydration part 2, can be integrated with pre-extrusion structure or crimping section (not shown).Transport fabric 19 and can be the suitable machine net blanket (machine clothing) of extruded fabric (pressfabric) or other types.Dehydration part 2 heels are with drying nest 3 is arranged.Drying nest 3 comprises drying 5, promptly so-calledly raises basic drier 5.When paper web 11 was dehydrated to the degree of drying of approximate 25-60%, paper web was further transmitted or is pushed with respect to the desiccated surface of raising basic drier 5 by transfer roller 6, to carry out final drying.Be sent to the desiccated surface of raising basic drier 5 in order to ensure paper web 11, can adopt dissimilar adhesive coating unit (not shown).Paper web 11 can only be transferred into to be raised basic drier and paper web 11 is not carried out any abundant compression to carry out contact drying, perhaps optionally, paper web 11 can be extruded facing to raising basic drier 5 by pressurizing unit, and this pressurizing unit for example comprises raises base tube 5 and compression roller 6 or 7.Not shown and this structure of the optional additional extrusion structure of dehydration in the part 2 also can be used for the pre-extruding or the formation of paper web 11.Transport fabric 19 around a plurality of rotation deflector rolls and worm felt roll 10 runnings as dehydration or extruded fabric and with what paper web was transported to drying nest 3.Roller 6 is as transfer roller or as pressure roller, and roller 7 is used for increasing paper web and raises basic drier 5 so that paper web 11 carries out final aridity when dry at drying nest 3 being transferred into.
Optionally, transporting fabric 19 is not dehydration or extruded fabric, and can be the through-air drying fabric in another embodiment of the present invention, wherein utilizes so-called aeration-drying technology to make the tissue web drying on the TAD tube, and does not adopt traditional basic drier of raising.
In the embodiment shown in Figure 1, support the deflector roll that transports fabric 19 in the dehydration part 2, at least a portion in guide reel or the worm felt roll 10 is according to the lightweight roll of being made by synthetic material 10 of the present invention, and these lightweight roll replace traditional steel deflector roll to insert.Because the weight of rotation deflector roll 10 reduces, so the speed that machine fabric can be higher running, this exerts an influence to machine productivity again.In order fully to reduce because the rotation of heavy steel deflector roll and the vibration that in machine, produces, at least one in all deflector rolls, or preferably at least 10% should replace by lightweight roll.When the rotation steel rider more than 50% is replaced by corresponding lightweight roll 10, can realize more significant effect.
Weight according to lightweight roll 10 of the present invention should be than in light weight at least 10% of the corresponding steel rider with same mechanical properties, preferably, the weight of the corresponding steel rider of weight ratio of lightweight roll is reduced by at least 20-30%, and most preferably the weight than corresponding steel rider reduces 60-80%, keeps simultaneously and the corresponding identical required mechanical property of steel rider.The optional material that utilizes density to be lower than steel density is realized the minimizing of roller weight.For example, this material can be light metal, such as titanium, aluminium etc.Other optionally comprise the synthetic material of glass or carbon reinforcing fibre and resin matrix.Optionally, other suitable materials (such as pottery etc.) that have than low-density and suitable mechanical characteristic also can be used for making this lightweight roll.
Optionally, in green end 1, traditional steel deflector roll or guide reel can be replaced by aforesaid lightweight roll 10 in forming net 13, internal shaping net 14 or the loop of the two outside.
Fig. 2 represents amended tissue paper machine layout, and it has crescent former in green end 1.Green end 1 comprises outer forming net 13 and fabric 19.All around a plurality of deflector rolls and/or worm felt roll 10 runnings, at least one in these rollers 10 replaced by lightweight roll according to the present invention for forming net 13 and fabric 19.Fabric 19 transmits by dehydration part 2 paper web 11 that forms to drying nest 3 from green end 1, to carry out final drying raising on the basic drier 5.Dehydration part 2 also selectively comprises the pressurizing unit (not shown).
Fig. 3 shows further amended tissue paper machine layout with crescent former, and this machine has green end 1, dehydration part 2 and drying nest 3.Drying nest 3 heels are with winding part 4, wherein final dry paper web 11 is turned up (crepe) and further is sent to roll-up device (reel-updevice) from raising basic drier 5 from the desiccated surface of raising basic drier 5 by scraping blade (doctor), so that paper web 11 is wound into paper roll 18.Tissue web 11 is supported by the supporting network blanket 21 around a plurality of deflector roll 10 runnings.Optionally, paper web 11 can be rolled by the calender (not shown) before coiling 18.Net blanket 21 can be any suitable fabric, if use the TAD unit after the basic drier of raising of the final drying that is used for tissue web 11, then comprises the TAD fabric.Roll-up device can be any known type, does not therefore further illustrate here.
Optionally, conventional steel guide in the winding part 4 or guide reel also can be replaced by lightweight roll 10.
Fig. 4 shows another embodiment of paper machine, and it has the drying nest 3 of modification.In drying nest 3, drying 5 (so-called raise basic drier 5) heel with have a plurality of dryings 20 that are used for final dry-web 11 or jar.Optionally, drying nest 3 can not comprise raises basic drier 5, and only comprises the drying 20 that is used for the dry-web or the plate width of cloth.Paper web 11 is supported by supporter or dry fabric 22, and this dry fabric is towards the desiccated surface extruding paper web 11 of drying 20.Fabric 22 is around a plurality of deflector roll 10 runnings according to the present invention.Paper web is wound into paper roll 18 in the winding part 4 of known type after the final drying of quilt.
Optionally, traditional steel deflector roll in the drying nest 3 or guide reel can be replaced by lightweight roll 10 according to the present invention.
In Fig. 5, show cutaway view according to lightweight roll of the present invention.The axle 16 that roller 10 has two flanges 15 and is suitable for being installed in rotatably in the bear box or is mounted with any other suitable manner.Roller 10 also has the roller shell 17 that these flanges 15 are linked into an integrated entity in equipment.Roller shell 17 is suitable for supporting the different net blankets that use in paper web 11 or the paper machine.Roller shell 17 can be installed on the flange with any suitable known manner.Can make less than the material of steel by density for one in flange 15 and/or the roller shell 17, with about 10-90% of the gross weight that reduces roller 10.
Optionally, roller 10 can be made by known optional low-density lightweight material (such as synthetic and/or plastics) by suitable known production method (such as molded, extruding etc.) is whole, and makes that therefore shell 17 and flange 15 are integrated into parts.
Fig. 6 A shows the sectional view that the sectional view of the deflector roll with traditional outer steel shell 17 and Fig. 6 B show the synthetic shell 17 that is used for the corresponding lightweight roll 10 that a part or whole part made by synthetic material.When the synthetic material that is lower than steel by density is made the shell 17 of roller 10, to compare with the traditional heavier steel roll shell that has same mechanical properties accordingly, shell 17 selectively has identical or different thickness and external diameter.These mechanical properties depend on that the specific location of the performance that makes roller 10 in paper machine that calculates stablize desired required mechanical parameter.For the lightweight roll 10 that replaces steel rider, required parameter (as bending, rigidity, critical speed, inertia, possible maximum (top) speed, vibration, remaining out-of-balance force) and required size can be calculated by known method.
Except synthetic material, roller 10 can be by accurate extruding or other traditional known technologies and partly or wholely made by light pottery.In addition, the light metal of similar titanium and aluminium also can be used for making the lightweight roll that is used for paper machine.These methods preferably should be certain precision casting and preferably avoid the surface of additional processing roller.The surface of lightweight roll 10 can have special cover layer, to obtain specific surface quality.
According to synthetic roller of the present invention because its good weight one rigidity deflection very littler and have high specified vibration frequency than having; Their weight can be corresponding steel rider weight 10-20% and with regard to identical application, can have littler diameter.These rollers are easy to handle, transport and storage.They are suitable for confined space application scenario ideally to transform and/or acceleration plan and minimizing cost.On the other hand, obviously can't help roller shell that metal material makes has other requirements for synthesizing shell for being assembled on the metal roller shaft, but this structural differences is not discussed at this.
Have been noted that for example reduction of deflector roll weight can make the rotating speed of roller enlarge markedly before reaching its critical speed, and spinner member is light more, because its remaining equilibrant force is lower thereby the vibration of generation is littler.Synthetic roller is the restriction of 1/2 critical speed not, because above-mentioned manufacture method can make the roller shell have pure circular cross-section.Therefore, synthetic roller has higher critical speed, thereby allows with almost 1/1 critical speed running.
Therefore, use except steel other to have more low-density material and the therefore lighter material of weight, the weight of rotating roller can be reduced to the corresponding steel rider with same diameter weight 80% to 10%.Test and confirm, weight is that about 20% the lightweight roll of weight with traditional steel rider of same diameter can make rotating speed increase to the twice of the critical speed of traditional steel rider, and do not arrive self critical speed, referring to following formula (2), and this lightweight roll can not produce corresponding undesirable vibration owing to higher remaining out-of-balance force, as shown in Figure 7 and Figure 8.
(2) n
Critical synthetic≈ 2 * n
Critical steel
Wherein n is a critical speed.
At the higher rotating speed of needs and utilize lightweight roll to satisfy under the situation of this requirement not needs carry out the frame transformation, thereby saved investment cost.The replacing of roller becomes easier owing to its weight is lighter, and the installation that therefore is used for them also is shortened required downtime.
For example, diameter is that the weight of the reference steel roll of 650mm is about 4000kg, and diameter is similarly the weight of the roller of being made by synthetic material of 650mm and only is 800kg.
Known in the art, spinner member is light more, and is just more little to the corresponding exciting force of element with identical rigidity; When undesirable vibration took place, the critical speed of spinner member was high more, and the rotating speed of this element may be high more, thereby can realize higher process velocity for entire machine.Therefore, utilize lighter spinner member, such as transporting and deflector roll, worm felt roll or the guide reel of supporting network blanket or paper web, for example machine speed can increase to 3000m/min or more than.
Optionally, if necessary, under the situation that keeps identical operations speed, can reduce machine dimensions.
Synthetic roller has lower moment of inertia and therefore has lower energy consumption owing to its weight is lighter, this also provides cost savings.This has saved investment and maintenance cost.The material that is used for making lightweight roll can be chosen from different synthetic materials, wherein strengthens synthetic or resin and/or pottery such as fiber.These materials have repellence to most chemicals very much.These rollers can be by very accurately molded, thereby do not need processing or polish after work.They can have point-device round-shaped synthetic shell and realize excellent size stability by best filament wound angle (filament winding angle) in manufacture process, and this also makes minimum vibration.Carbon fiber tubulose shell thermal coefficient of expansion in the axial direction is for example little about 10 times than corresponding steel rider.Light-duty synthetic material (carbon or the glass fibre that for example have polymer resin matrix) has good vibration damping characteristic and high balance quality.Therefore, the roller of being made by this material has low remaining out-of-balance force and low level of vibration on the whole operation velocity interval.Lightweight roll also can have cover layer, to obtain special surface characteristic.
In Fig. 7, compare by steel guide reel vibration that causes and the vibration that causes by the synthetic guide reel that in paper machine, is positioned at same position as guide reel.With different machine speeds this steel rider and synthetic roller are measured.Measurement result has been shown in chart.As can be known, synthetic accordingly roller is starkly lower than corresponding steel rider with the level of vibration that different speeds produces.
Obviously as seen, be positioned at the level of vibration that surpasses twice with the steel rider generation of guide reel same position, this level of vibration increases along with the increase of machine operation speed.
Described lightweight roll can be used in all parts of paper machine: in the shaped portion of paper machine, be used as deflector roll or guide reel, in drying nest 3 with the measurement idler roller that acts on control net blanket tension force or with the guide reel that acts on net blanket, fabric or net, alignment rolls and/or deflector roll.Described lightweight roll can be used as pressure roller, as spread rolls, forming rolls or breast roll.When described roller is made by light metal, as drying etc.
Described paper machine can be the maker of traditional paper, cardboard or thin paper.
Should be understood that the embodiment of the paper machine that the present invention is not limited to illustrate and should in spirit of the present invention, make an explanation.The present invention can be applicable to the unconventional paper machine of other types, for example so-called aeration-drying (TAD) machine.
Claims (22)
1, a kind of tissue machine that is used to make tissue web, this tissue machine comprise shaped portion (1) and the dehydration part (2) with two net blankets (13,14) at least, this dehydration part comprises at least one paper making felt (19) and a plurality of rotation roller (6,7,8,10), each described roller (6,7,8,10) include two flanges (15) and make described flange (15) interconnect and support described net blanket (13,14,19) shell (17), described net blanket (13,14,19) with loop around described roller (6,7,8,10) running, described roller (6,7,8,10) diameter is according to required assumed (specified) load, crooked and rotating speed determines that this tissue machine is characterised in that, the described rotation roller (6 of at least one of described tissue machine, 7,8,10) be manufactured into lightweight roll (6,7,8,10), at least one in shell of described lightweight roll (17) and the flange (15) made less than the material of steel by density.
2, tissue machine according to claim 1 is characterized in that, under the mechanical parameter situation identical with the mechanical parameter of corresponding steel rider, the diameter of described lightweight roll (6,7,8,10) is less than the diameter of corresponding steel rider.
3, tissue machine according to claim 1 is characterized in that, under the mechanical parameter situation identical with the mechanical parameter of corresponding steel rider, the diameter of described lightweight roll (6,7,8,10) is greater than the diameter of corresponding steel rider.
4, tissue machine according to claim 1 is characterized in that, the diameter of described lightweight roll (6,7,8,10) is identical with the diameter of corresponding steel rider, and with the speed rotation greater than corresponding steel rider.
5, tissue machine according to claim 1 is characterized in that, at least one part (1 of described tissue machine, 2) the described lightweight roll (6 of at least one in, the material of described shell (17) 7,8,10) and at least one in the flange (15) has the 7800kg/m of being lower than
3, and be preferably about 500-2000kg/m
3Density.
6, according to the described tissue machine of claim 1 to 5, it is characterized in that, at least one rotates lightweight roll (6,7,8,10) a part or whole part is made by the material that density is lower than steel, and with regard to required assumed (specified) load and bending, described roller (6,7,8,10) have and the corresponding identical mechanical parameter of steel rider.
7, tissue machine according to claim 1, it is characterized in that, described paper machine also comprises drying nest (3), and this drying nest has drying (5,20) and with the dry fabric (22) of loop around described tube (20) and described lightweight roll (10) running.
8, tissue machine according to claim 4 is characterized in that, described paper machine also comprises winding part (4), and this winding part has with the supporting network blanket (21) of loop around described lightweight roll (10) running.
9, according to the described tissue machine of claim 1 to 8, it is characterized in that, at least one part (1 of described paper machine, 2,3,4) at least one the rotation roller (6,7 in, 8,10) be one of light-duty deflector roll (10), light-duty alignment rolls (10), light-duty worm felt roll (10) and light-duty forming rolls (8).
10, tissue machine according to claim 9 is characterized in that, at least one lightweight roll (6,7,8,10) is driven by one of them net blanket (13,14,19,21) and/or paper web (11).
11, tissue machine according to claim 1 is characterized in that, the shell (17) of described lightweight roll (6,7,8,10) has the cover layer of being made by another kind of material.
According to the described tissue machine of claim 1 to 11, it is characterized in that 12, the described shell (17) of described lightweight roll (6,7,8,10) and at least one in the flange (15) are made by synthetic material.
13, tissue machine according to claim 12 is characterized in that, the synthetic material of described lightweight roll (6,7,8,10) is to have one of the carbon fiber of resin matrix and glass fiber material.
14, tissue machine according to claim 12 is characterized in that, the synthetic material of described lightweight roll (6,7,8,10) is a ceramic material.
15, tissue machine according to claim 1 is characterized in that, the shell (17) of described lightweight roll (6,7,8,10) and at least one in the flange (15) by density be lower than steel and preferably 2000 to 5000kg/m
3Between light metal make.
16, a kind of method that improves the service speed of tissue machine, this tissue machine comprises shaped portion (1) and the dehydration part (2) with two net blankets (13,14) at least, and this dehydration part comprises at least one paper making felt (19) and a plurality of rotation roller (6,7,8,10), each described roller (6,7,8,10) comprise two flanges (15) that all have installation shaft (16) and make described flange (15) interconnect and support described net blanket (13,14,19) shell (17), described net blanket (13,14,19) with loop around described roller (6,7,8,10) running the method is characterized in that the following step:
In the shell of traditional steel rotation roller (6,7,8,10) and the flange at least one replaced with by density be lower than steel and have shell (17) and/or the flange (15) that the material of identical mechanical property is made.
17, method according to claim 16, this method also comprises the following steps:
With at least one tissue machine part (1,2) at least 10% of all conventional steel rotation roller in replaces with a part or whole part and is lower than the rotation roller (6 that the material of steel is made by density, 7,8,10), and this rotation roller compare with corresponding rotation steel rider and have the weight that reduces 10-90% at least and have identical mechanical parameter.
18, a kind of method of using the described lightweight roll of claim 1 (6,7,8,10) in tissue machine is characterized in that the following step:
At least one part (1 in described tissue machine, 2,3,4) in, steel that at least one is traditional rotation roller replaces with and the described steel rider weight/power ratio rotation roller (6 that reduces 10-90% at least and have the same flexure parameter mutually, 7,8,10), be used for guiding and/or supporting network, fabric or other net blankets (13,14,19,21).
19, a kind of method that is used to make the minimized in size of the tissue machine with given service speed is characterized in that the following step:
At least one part (1 with described tissue machine, 2,3,4,) at least one traditional steel rotation roller replace with light-duty rotation roller (6,7,8,10), the material that is lower than steel by density and has an identical mechanical parameter of at least one in the shell of this light-duty rotation roller (17) and the flange (15) is made.
20, method according to claim 19 is characterized in that the following step:
In at least one part (1,2,3,4) of described tissue machine, by described light-duty rotation roller (6,7,8,10) guiding and/or supporting network, fabric or other net blankets.
21, a kind of method that is used for when improving the service speed of tissue machine, reducing vibration, described tissue machine comprises shaped portion (1), dehydration part (2), in drying nest (3) and the winding part (4) at least one, each part includes at least one paper making felt (13,14,19,21,22) and a plurality of rotation roller (6,7,8,10), each described roller (6,7,8,10) include two flanges (15) and make described flange (15) interconnect and support described net blanket (13,14,19,21,22) shell (17), described net blanket (13,14,19,21,22) with loop around described roller (6,7,8,10) running the method is characterized in that the following step:
In the shell of traditional steel rotation roller (6,7,8,10) and the flange at least one replaced with by density be lower than steel and have shell (17) and/or the flange (15) that the material of the mechanical property identical with steel is made.
22, a kind of method that the tissue machine with intended size and action required speed is transformed of being used for, described tissue machine comprises shaped portion (1), dehydration part (2), in drying nest (3) and the winding part (4) at least one, each part includes at least one paper making felt (13,14,19,21,22) and a plurality of rotation roller (6,7,8,10), each described roller (6,7,8,10) include two flanges (15) and make described flange (15) interconnect and support described net blanket (13,14,19,21,22) shell (17), described net blanket (13,14,19,21,22) with loop around described roller (6,7,8,10) running the method is characterized in that the following step:
In the shell of traditional steel rotation roller (6,7,8,10) and the flange at least one replaced with by density be lower than steel and have shell (17) and/or the flange (15) that the material of the mechanical property identical with steel is made.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE05028014 | 2005-12-19 | ||
| SE0502801A SE0502801L (en) | 2005-12-19 | 2005-12-19 | Apparatus and method for increasing the productivity of a paper machine or reducing its dimensions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101341291A true CN101341291A (en) | 2009-01-07 |
Family
ID=38188909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200680048052.XA Pending CN101341291A (en) | 2005-12-19 | 2006-11-16 | Arrangement and methods for increasing productivity of a paper machine or minimizing its dimensions |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20090314447A1 (en) |
| EP (1) | EP1974095A4 (en) |
| CN (1) | CN101341291A (en) |
| BR (1) | BRPI0620680A2 (en) |
| SE (1) | SE0502801L (en) |
| WO (1) | WO2007073274A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114981500A (en) * | 2020-01-09 | 2022-08-30 | 维美德股份公司 | Paper making machine for household paper |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI122706B (en) * | 2009-04-29 | 2012-05-31 | Metso Paper Inc | A method for increasing the running speed of a fiber web machine and a roller for a fiber web machine |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2005885A (en) * | 1932-01-23 | 1935-06-25 | Westinghouse Electric & Mfg Co | Roll |
| US3593398A (en) * | 1969-09-11 | 1971-07-20 | Sw Ind Inc | Relatively long machinery roll having high strength-to-weight ratio |
| US3698053A (en) * | 1971-05-06 | 1972-10-17 | Sw Ind Inc | High speed roll for machinery |
| US5324248A (en) * | 1992-11-03 | 1994-06-28 | Composite Development Corporation | Composite machine roll and method of manufacture |
| US5411463A (en) * | 1993-10-13 | 1995-05-02 | Albany International Corp. | Composite roll and method of making |
| US5785636A (en) * | 1995-10-12 | 1998-07-28 | Beloit Technologies, Inc. | Composite roll shell |
| FI111473B (en) * | 1997-10-14 | 2003-07-31 | Metso Paper Inc | A method of manufacturing a lightweight roll and a roll manufactured according to the method |
| FI103829B (en) * | 1998-05-14 | 1999-09-30 | Valmet Corp | The suction roll |
| US6210528B1 (en) * | 1998-12-21 | 2001-04-03 | Kimberly-Clark Worldwide, Inc. | Process of making web-creped imprinted paper |
| US6339883B1 (en) * | 2000-02-25 | 2002-01-22 | Voith Sulzer Paper Technology North America, Inc. | Method of making a roll for paper-making machine |
| CA2405162C (en) * | 2000-05-18 | 2008-12-30 | Metso Paper Karlstad Ab | Soft crepe paper machine and press section thereof |
| US6709549B2 (en) * | 2001-03-29 | 2004-03-23 | Metso Paper Karlstad Ab | Multi-reel apparatus in a paper machine |
-
2005
- 2005-12-19 SE SE0502801A patent/SE0502801L/en not_active Application Discontinuation
-
2006
- 2006-11-16 EP EP06813019A patent/EP1974095A4/en not_active Withdrawn
- 2006-11-16 CN CN200680048052.XA patent/CN101341291A/en active Pending
- 2006-11-16 US US12/158,020 patent/US20090314447A1/en not_active Abandoned
- 2006-11-16 BR BRPI0620680-8A patent/BRPI0620680A2/en not_active IP Right Cessation
- 2006-11-16 WO PCT/SE2006/001299 patent/WO2007073274A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114981500A (en) * | 2020-01-09 | 2022-08-30 | 维美德股份公司 | Paper making machine for household paper |
| CN114981500B (en) * | 2020-01-09 | 2024-03-08 | 维美德股份公司 | Paper machine for household paper |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0620680A2 (en) | 2011-11-22 |
| EP1974095A4 (en) | 2013-03-20 |
| US20090314447A1 (en) | 2009-12-24 |
| SE0502801L (en) | 2007-06-20 |
| EP1974095A1 (en) | 2008-10-01 |
| WO2007073274A1 (en) | 2007-06-28 |
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