CN102782212B - Dewatering press - Google Patents
Dewatering press Download PDFInfo
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- CN102782212B CN102782212B CN201180010780.2A CN201180010780A CN102782212B CN 102782212 B CN102782212 B CN 102782212B CN 201180010780 A CN201180010780 A CN 201180010780A CN 102782212 B CN102782212 B CN 102782212B
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- slot seal
- seal retainer
- trough
- squeezing
- squeezer
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- 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
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
- D21F1/74—Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders
- D21F1/78—Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders with pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/20—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using rotary pressing members, other than worms or screws, e.g. rollers, rings, discs
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Fluid Mechanics (AREA)
- Paper (AREA)
- Sealing Devices (AREA)
- Gasket Seals (AREA)
- Treatment Of Sludge (AREA)
Abstract
A press for dewatering a liquid suspension of a solid biological material comprises a liquid-permeable dewatering drum, which is rotatably mounted in a frame, and a press trough which is adapted to press the liquid suspension against the liquid-permeable dewatering drum in such a manner that liquid is pressed into the dewatering drum, the press trough being adapted to be sealed against the frame by means of a trough seal (40) arranged in a trough seal retainer (42) which extends around at least part of the press trough, said trough seal retainer being adapted to retain, at least along one portion (50a-50d) of its extension, the trough seal (40) with an inner radius of curvature between 20mm and 800 mm.
Description
Technical field
The present invention relates to the squeezer of the liquid suspension body dehydration that makes solid biologic material.The invention still further relates to slot seal retainer and the groove sealing ring of this squeezer and manufacture the method for groove sealing ring.
Background technology
In the time making the liquid suspension body dehydration of solid biologic material, for example, while being used in the suspended substance dehydration of the cellulose fibre of producing paper pulp, commonly use the squeezer that comprises the cylinder that dewaters.Conventionally, dehydration cylinder has screen pack or sieve plate on its outside, and paper pulp is compressed in the gap between the squeezing trough and the dehydration cylinder that are formed at the parts that form squeezer against screen pack or sieve plate.The liquid squeezing out from suspended substance passes respectively screen pack or sieve plate and enters into cylinder.Then wiped off and drawn away from cylinder outside in further processing at the paper pulp of dehydration, liquid is drawn cylinder.
WO 2009/038529 discloses this water-removing press.
Dehydration cylinder is rotatably installed in framework and squeezing trough can regulate with respect to cylinder and frame vertical straight conventionally.The described vertically object of modulability be convenient to squeezer the part that only can approach via gap clean, service with safeguard because in the time squeezing the position of trough in its decline, these parts can more easily be approached.Because suspended substance is supplied to dehydration cylinder under the effect of pressure, so guarantee that the good compactness between squeezing trough and framework is important.This solves by inflatable, the rectangular channel sealing ring that are made into hollow rubber profile conventionally.Due to the inflatable property of sealing ring, sealing ring can be absorbed in the larger movement between framework and squeezing trough.But, the demand of existence to the slot seal improving.
Summary of the invention
The object of this invention is to provide the groove sealing of improvement.
This object is realized by the squeezer of the liquid suspension body dehydration for making solid biologic material, this squeezer comprises the fluid dewatering cylinder being thoroughly rotatably installed in framework, and squeezing trough, this squeezing trough is suitable for mode liquid squeezing is entered into dehydration cylinder and squeezes liquid suspended substance against fluid dewatering cylinder thoroughly, this squeezing trough is suitable for by means of being arranged in slot seal in slot seal retainer sealed against framework, this slot seal retainer is around at least part of extension of squeezing trough, described slot seal retainer is suitable at least keeping having along a part for its extension the slot seal of the incurvature radius between 20mm and 800mm while observing from top.Bending by using slot seal retainer to produce on the slot seal with this radius of curvature, can make slot seal change direction, and follow the path of expectation around squeezing trough, and need to not connect about any joint of bending.This is convenient to the installation of slot seal, because need less joint to obtain continuous slot seal.Preferably, at least a portion of described slot seal retainer is arranged to keep having while observation from top between 30mm and 200mm, and the slot seal of preferred incurvature radius between 60mm and 100mm.
Preferably, slot seal retainer is arranged to have along the whole length maintenance of slot seal retainer the slot seal of the incurvature radius that exceedes 20mm.This is convenient to the installation of slot seal very much, because do not need the corner joint of effort to connect.More preferably, slot seal retainer is arranged to keep slot seal along the total length of slot seal retainer, and the radius of curvature of this slot seal exceedes 30mm and even more preferably exceedes 60mm.
In one embodiment, slot seal retainer comprises four roughly straight parts, these four roughly straight part be connected to each other to form the quadrangle with fillet by four sweeps, sweep has the incurvature radius that exceedes 20mm.Preferably, described four sweeps have the incurvature radius that exceedes 30mm and more preferably exceed 60mm.
In one embodiment, squeezing trough can regulate with respect to frame vertical straight between operating position and maintenance position, in operating position, the mode that squeezing trough is arranged to seal is by slot seal abutment frame, in maintenance position, the adjacent grooves seal place between framework and squeezing trough forms air gap.This is for example convenient to be formed on service and the cleaning in the squeezer gap between dehydration cylinder and squeezing trough.
In one embodiment, slot seal retainer is fixedly attached to framework.
In one embodiment, the cross section of slot seal retainer be roughly U-shaped with receiving slit seal.Preferably, slot seal retainer be arranged on framework and its U-shaped cross-section under shed; In addition, squeezing trough is provided with sealing ring, and slot seal is suitable for the upper surface with sealing means contiguous seal circle.The sealing ring of easy cleaned general planar can be set like this.
According on the other hand, realize the groove sealing improving by means of the slot seal retainer of the squeezer that the liquid suspension body of solid biologic material is dewatered, slot seal retainer is suitable for keeping slot seal for the sealing between squeezing trough and the framework of dehydration cylinder, groove seal retainer comprises at least a portion along its extension, and this at least a portion is suitable for keeping having the slot seal of the incurvature radius between 20mm and 800mm while observation from top.On the slot seal with this radius of curvature, produce bending by using slot seal retainer, can make slot seal change direction, and follow according to the path of expecting around squeezing trough, and need to not connect about any joint of bending.This is convenient to the installation of slot seal, because need less joint to obtain continuous slot seal.Preferably, described at least a portion of slot seal retainer is arranged to keep having while observation from top between 30mm and 200mm, and the slot seal of preferred incurvature radius between 60mm and 100mm.
Preferably, slot seal retainer is suitable for having along the whole length maintenance of slot seal retainer the slot seal of the incurvature radius that exceedes 20mm.This is convenient to the installation of slot seal very much, because do not need the corner joint of effort to connect.More preferably, slot seal retainer is arranged to keep slot seal along the total length of slot seal retainer, and the radius of curvature of this slot seal exceedes 30mm and even more preferably exceedes 60mm.
In one embodiment, slot seal retainer comprises four roughly straight parts, these four roughly straight part be connected to each other to form the quadrangle with fillet by four sweeps, sweep has the incurvature radius that exceedes 20mm.This kind of slot seal retainer is particularly well-suited in being integrated on present market in obtainable water-removing press, this water-removing press has makes them be suitable for the shape of slot seal retainer, described slot seal retainer is applicable to the bight that joint connects, thereby this squeezer can also benefit from advantage of the present invention.Preferably, described four sweeps have the incurvature radius that exceedes 30mm and more preferably exceed 60mm.
In one embodiment, the cross section of slot seal retainer be roughly U-shaped with receiving slit seal.
According on the other hand, the method that is used for the groove sealing ring of the squeezer of the liquid suspension body dehydration that makes solid biologic material by manufacture realizes the groove sealing improving, the method comprises elongated slot seal is set, this slot seal is roughly rectilinear when static, and there is first end and the second end, and described first end is connected to described the second end to form groove sealing ring, and this groove sealing ring has the radius of curvature between 20mm and 800mm while observing from top along at least one part of its extension.Bending by producing on the slot seal with this radius of curvature by this way, can make slot seal change direction, and follow the path of expectation around squeezing trough, and need to not connect about any joint of bending.This is convenient to the installation of slot seal, because only need a joint to obtain continuous slot seal.Preferably, the method comprises formation groove sealing ring, and this groove sealing ring has while observing from top between 30mm and 200mm along described at least one part of its extension, and the incurvature radius between 60mm and 100mm more preferably.
Preferably, groove sealing ring has along its whole extension the radius of curvature that exceedes 35mm.More preferably, groove sealing ring has along its whole extension the 30mm of exceeding, and even more preferably exceedes the radius of curvature of 60mm.
In a preferred embodiment, the method comprises slot seal is positioned in the slot seal retainer being arranged on squeezer.This means and can make slot seal retainer keep slot seal in the mode of the radius of curvature that maintains expectation.
In a preferred embodiment, realize described connection by sulfurization.
In a preferred embodiment, above-mentioned slot seal is inflatable.Inflatable slot seal is very useful to the present invention, because compare with sealing effectiveness with the inflatable property of angled joint, the sweep of inflatable slot seal provides better inflatable property and better sealing effectiveness is also provided thus.This is thick owing to having the elastomeric material of non junction part of the radius of curvature that the elastomeric material of angled joint of very little radius is larger than having; For example,, because two tip sides of rubber seal are all cut with the angle of 45 degree, so the elastomeric material of the joint of an angle of 90 degrees degree is the thickness of the elastomeric material of straight part
doubly.Therefore it is impaired that angled joint causes the inflatable property in bight.In addition, the heat cure process of normally used reality causes the thicker elastomeric material in joint, and this has also given to be arranged in the roughly inflatable property of the joint slightly damaged of straight part.Therefore, the in the situation that of inflatable slot seal, the special joint number of expecting that maintenance is minimum.
According on the other hand, realize the groove sealing improving by inflatable groove sealing ring, this inflatable groove sealing ring is for the sealing between framework and the squeezing trough of the squeezer of the liquid suspension body dehydration for making solid biologic material, and groove sealing ring has at least minimum profile curvature radius of 20mm.This kind of groove sealing ring do not have angled joint and be therefore easy to be manufactured.This kind of groove sealing ring also allows the better sealing between groove and framework.Preferably, described groove sealing ring has the minimum profile curvature radius of 30mm and preferred 60mm.
Above-mentioned squeezer, slot seal retainer, groove sealing ring and method are suitable for making dewatering of pulp.
Brief description of the drawings
Referring now to accompanying drawing, the present invention is described in further detail.
Fig. 1 is the schematic cross-sectional view that illustrates the squeezer that makes cellulose pulp dehydration.
Fig. 2 is along section II-II in Fig. 1 and has removed the schematic cross sectional views of parts, and shows obliquely squeezer from below.
Fig. 3 a is squeezing trough in the position of its lifting time, the enlarged cross-sectional view of region III shown in figure 2.
Fig. 3 b is squeezing trough in the position of its decline time, the enlarged cross-sectional view of region III shown in figure 2.
Fig. 4 is the perspective schematic view tilting from the below of slot seal retainer and slot seal.
Fig. 5 is slot seal while being arranged in slot seal retainer, the amplification plan view of region V shown in Figure 4.
Fig. 6 is slot seal while being arranged in slot seal retainer, the zoomed-in view of cross section VI-VI shown in Figure 4.
Fig. 7 is slot seal while being arranged in slot seal retainer, the amplification plan view of the alternate embodiment of region V shown in Figure 4.
Detailed description of the invention
Fig. 1 has when illustrating from the side and observing in cross section for making the dewater unit such as the form of the squeezer 1 of the liquid suspension body dehydration of the solid biologic material of cellulose pulp.Squeezer 1 has the first dehydration cylinder 2 and the second dehydration cylinder 4.Dehydration cylinder 2 is arranged to be rotated counterclockwise, as indicated by arrow R in Fig. 1.Dehydration cylinder 4 is arranged to contrary direction,, rotation clockwise, but, hereinafter, even the second dehydration cylinder 4 with respect to the first dehydration cylinder 2 Mirror Symmetries, dehydration cylinder 4 also with dehydration cylinder 2 parts and functional similarity, and therefore the second dehydration cylinder 4 will be described no longer in further detail here.
Squeezer 1 also comprises the squeezer device with squeezing trough 6 forms, and the first dehydration cylinder 2 is arranged in squeezing trough 6 inside with rotation.The bottom of cylinder 2 is squeezed trough 6 and surrounds, and the Bei Cao top, top 7 of cylinder 2 surrounds.Have the entrance 8 of the liquid suspension body of cellulose pulp in a side at groove top 7, the liquid suspension body of described cellulose pulp is the wet fiber element paper pulp conventionally with the dry ingredient in the scope of 3-15% weight TS.Squeezing trough 6 is provided with multiple liquid inlets 10, and cleaning fluid is supplied to paper pulp through this liquid inlet 10.
In the time making the dehydration of liquid suspension body, as indicated by arrow M, suspended substance is supplied to squeezing trough 6 via entrance 8, then in the squeezer gap 12 being formed between squeezing trough 6 and cylinder 2, is extruded.The liquid being included in suspended substance is squeezed the circumference through cylinder 2, and enters into the inside of cylinder 2, as indicated by the arrow W in Fig. 1.The cleaning fluid of supply also will be extruded in the inside of cylinder 2, as indicated by arrow C.Squeeze into the liquid of cylinder inside the bottom at cylinder 2 is assembled and flowed out in the mode of describing hereinafter with reference to Fig. 2 from here.
After paper pulp fully dewaters, it is discharged from squeezing trough 6 at point 14 places shown in Fig. 1, is then pushed against the paper pulp dewatering on second dehydration cylinder 4 in the corresponding way.Scraper 16 is arranged to wipe off from cylinder 2 the anhydro cellulose paper pulp of the dry ingredient conventionally can with 25-40% weight TS, thereby as indicated by arrow P, the paper pulp of dehydration is extruded in conveyance conduit 18 and from squeezer 1 and discharges.
Fig. 2 is the viewgraph of cross-section along the section II-II in Fig. 1, and illustrates obliquely the first dehydration cylinder 2 from below, and the other part of squeezer 1.For object clearly, squeezer 1 is illustrated as some parts and is removed.Cylinder 2 has two end plates 20, and in two end plates 20 is only shown.End plate 20 is arranged in arbitrary end of cylinder 2 and eachly has axle journal 24(and only illustrate one) thus cylinder 2 is arranged in framework 27 by axle journal.Framework 27 is erected at solid base, for example, on floor.
Dehydration cylinder 2 has supporting pipeline 28, and this supporting pipeline 28 has the shape of the cylindrical sleeve that is attached to two end plates 20.Supporting pipeline 28 is provided with multiple openings 30, and the plurality of opening 30 roughly distributes equably across supporting pipeline 28, as also shown in Fig. 1.By squeezing trough 6 with by second tin roller 4(Fig. 1) while going out liquid from pulp squeezing, liquid can enter into by these openings 30 inside of cylinder 2.Liquid sieve plate 48 surrounds supporting pipeline 28 thoroughly, and separates from supporting pipeline 28 by means of stratiform ring 35.
Supporting pipeline 28 has the large length of length that is squeezed the part that trough 6 surrounds than its lower end of supporting pipeline 28.Thus, squeezing trough 6 only extends along the bottom of supporting pipeline 28 along a part for the whole length of supporting pipeline 28.The drainage with group 32 forms of drainage openings 33 is arranged on and in supporting pipeline 28, is squeezed the region exterior that trough 6 surrounds.Therefore, the group 32 of opening 33 is arranged on the most external of supporting pipeline 28, as seen in the axial direction.The liquid being squeezed in the part that trough 6 surrounds being squeezed in cylinder 2 flows the group towards this opening 33 32 in the axial direction, and the opening 33 that is passed this group 32 as liquid stream F is discharged from cylinder 2, and liquid is discharged from cylinder 2 thus.Liquid stream F flows out cylinder 2 via outlet 34.
The either side that sealing device 36 is arranged in cylinder 2 leaks out and enters into surrounding environment and for collecting the liquid that flows out cylinder 2 through the opening 33 of this group 32 from cylinder 2 for preventing liquid.
When using cylinder 2 so that liquid suspension body when dehydration of cellulose pulp, the liquid having squeezed out from the paper pulp gap 12 shown in Figure 1 will be penetrated in the inside of cylinder 2 by the opening 30 being formed in supporting pipeline 28, as indicated by arrow W in Fig. 1.Supporting pipeline 28 lacks and trends towards the internal structure of carrying liquid during cylinder 2 rotations, and therefore liquid by Rapid Flow the bottom to cylinder 2, as indicated in Fig. 1.As shown in Figure 2, the liquid of having assembled in the bottom of cylinder 2 towards the opening 33 of this group 32 along cylinder 2 rapid flow in the axial direction, and as in Fig. 2, to pass through arrow F indicated, flow out cylinder 2 by these openings 33 of this group 32.
For the ease of service and maintenance, for example clean the gap 12 between squeezing trough 6 and cylinder 2, can regulate vertically squeezing trough 6 with respect to cylinder 2, framework 27 and groove top 7.By squeezing trough 6 being arranged in to hydraulic piston 38(Fig. 1) upper, realize in the example shown vertical adjusting, this hydraulic piston 38 can make groove 6 reduce with respect to framework 27, therefore can approach gap 12.In the operating period of squeezer, expect the amount of the suspended substance flowing out from groove 6 to minimize; Therefore squeezer 1 is provided with slot seal 40, and this slot seal 40 sealed between cell wall 9 and frame wall 44 in the operating period of squeezer 1.Cell wall 9 is fixedly connected to groove 6 and forms the part of groove 6 and frame wall 44 is fixedly connected to framework 27 and forms the part of framework 27.Slot seal 40 extends in horizontal plane around whole squeezing trough 6 and seals between squeezing trough 6 and framework 27 along its whole extension.Like this, squeezing trough 6 forms roughly cover closely together with framework 27, this roughly closely cover seal two cylinders 2,4(Fig. 1) bottom and squeezer gap 12.
The detailed view of Fig. 3 a more clearly illustrates at operating period squeezing trough 6, the framework 27 of squeezer and how slot seal 40 interacts to be formed on squeezer gap 12 and around the sealing between the surrounding environment of squeezer 1.Slot seal 40 is arranged in slot seal retainer 42, and the cross section of this slot seal retainer 42 is roughly that U-shaped and this slot seal retainer 42 are fixedly attached to frame wall 44.Frame wall 44 is fixedly connected to framework 27 and forms the part of framework 27.Frame wall 44, slot seal retainer 42 and slot seal 40 all extend around groove 6.
The outside of the cell wall 9 of groove 6 is provided with the outstanding sealing ring 46 of the hardware form with elongated L shaped cross section, and a shank of sealing circle 46 is closely welded against cell wall 9.Naturally, can sealing ring 46 be connected to groove 6 hermetically in any other suitable mode.Slot seal 40 in Fig. 3 a is inflated, that is, made slot seal 40 expand by the supercharging of the gas in the cavity 54 in slot seal 40.According to Fig. 3 a it is evident that, in the time that slot seal 40 is inflated, slot seal 40 protrudes slot seal retainer slightly, makes sealing ring 46 and slot seal retainer 42 not against friction each other.The U-shaped of slot seal retainer 42 contributes to guarantee at aeration period, and slot seal 40, in correct direction, expands towards the direction of sealing ring 46.
Fig. 3 b shows in the time that squeezer 1 is in service position, that is, when squeezing trough 6 is by means of hydraulic piston 38(Fig. 1) same view while slightly reducing compared with the operating position shown in Fig. 3 a.Service position allows to approach better squeezer gap 12 for clean or other maintenance.In the illustrated embodiment, slot seal 40 is arranged on framework 27 in the following manner: the surface that the squeezing trough 6 for against can vertically regulating of slot seal 40 seals is by directed downwards.This means the sealing surfaces general planar that can make the upside by L shaped sectional element that squeezes trough 6 form.This makes in the time cleaning squeezer gap 12, and discharge flushing water or pulp residue are more prone to.
During slot seal being arranged in the rectangular channel seal retainer extending around groove, known groove sealing ring before making in site in the following manner: by means of hot vulcanization, four straight-line groove seal sections and four that manufacture in advance, angled corner sections are linked together, make described section of formation rectangular channel sealing ring sulfurization after.Sometimes end is linked together by sulfurization by four straightways of the angle cutting with 45 °, thereby obtains rectangle, inflatable groove sealing ring.But the latter's of mounting groove seal method is less preferred, because it needs the accuracy that only can realize in workshop to obtain bight closely.Before should understanding, the installation of known slot seal is relatively consuming time and is difficult to operation, need to pull down the part of framework to make it possible to easily to approach slot seal retainer.
Fig. 4 shows slot seal retainer 42 according to an embodiment of the invention obliquely from below.In the example illustrating, slot seal retainer 42 is made up of four linear pattern U-shaped beam section 48a, 48b, 48c, 48d, and these four linear U-shaped beam-ends 48a, 48b, 48c, 48d are connected to each other by means of four bending U-shaped beam profile 50a, 50b, 50c, 50d.U-shaped beam profile for example can be formed from steel and be linked together by welding point.Slot seal retainer 42 is arranged to keep inflatable rubber groove seal 40, describes in further detail this slot seal 40 with reference to Fig. 5 to Fig. 7.As illustrated in Figure 4, slot seal 40 is provided with compressed air interface 49, and air can be supplied to slot seal 40 so that slot seal 40 is inflated by this compressed air interface 49.Interface 49 is approached opening 51 ground and is positioned in slot seal retainer 42, and this makes it possible to approach interface 49 from the outside of slot seal retainer 42.
By first end 41 being connected to the second end 43, the slot seal 40 with first end 41 and the second end 43 is arranged to form to the groove sealing ring 40 ' (dotted line) of sealing.It is circular that groove sealing ring 40 ' needs not be; It can be for example rectangle roughly, as apparent in institute in Fig. 4.Preferably, by sulfurization, two ends 41,43 of slot seal 40 are linked together.This makes groove sealing ring 40 ' is airtight substantially, and this is favourable in the time making groove sealing ring 40 ' inflation.Preferably, as shown in Figure 4, at the straightway place of slot seal retainer 42, end is linked together, simpler because this makes that lasting joint is set.In addition, preferably with the straight angle, groove sealing ring 40 ' is linked together, the groove sealing ring that makes so to form is straight line roughly in joint, and therefore, according to the definition of the radius of curvature r2 of illustrated slot seal in Fig. 5, the length that the groove sealing ring so forming has along it radius of curvature r2 that is less than 20mm does not have angled part.
Fig. 5 illustrates the sweep 50b of slot seal retainer 42 in further detail, and the corresponding part of slot seal 40.Sweep 50b has the total curvature of approximate 90 °, and this generation has the slot seal retainer 42 and slot seal 40 of the essentially rectangular shape of fillet (Fig. 4).The bending U-shaped beam profile 50b of slot seal retainer 42 has the incurvature radius r 1 of 75mm, and this incurvature radius r 1 is defined as the radius of curvature of the inner radial surface of the adjacent channels seal 40 of slot seal retainer 42.In addition, slot seal retainer 42 has the outer curvature radius r3 of 110mm, and this outer curvature radius r3 is defined as the radius of curvature of the radially-outer surface of the adjacent channels seal 40 of slot seal retainer 42.This produces the inner width D1 of the 35mm of bending U-shaped beam profile 50b.Slot seal retainer 42 keeps having the inflatable unaerated slot seal 40 of width D 2, and this width D 2 is approximate identical with D1 in the example illustrating.Therefore, in the example illustrating, the radius of curvature r2 of slot seal 40, that is, the radius of curvature of the inner radial surface of the adjacent channels seal retainer 42 of slot seal 40 is approximate identical with the incurvature radius r 1 of U-shaped beam profile 50b.Preferably, D1 >=D2 >=(0.8*D1), make the opening that allows slot seal 40 mainly to expand in U-shaped beam profile at aeration period in vertical direction.The preferable range of the width D 2 of slot seal 40 is between 10mm and 70mm.
The factor that determines the selection of the radius of curvature r1 of the sweep 50a-50d of slot seal retainer 42 be low mechanical stress on the sweep of the slot seal 40 of the inside of the sweep 50b of slot seal retainer 42 on the one hand with and good inflatable property, and be that the joint space-efficient direction of slot seal 40 changes on the other hand.In order to ensure best possible inflatable property, and guarantee thus best possible sealing effectiveness, and meet compact fillet simultaneously and slot seal retainer 42 is arranged in to the requirement of the possibility on this water-removing press, preferably slot seal retainer 42 is designed to there is 20mm to 800mm at sweep 50b place slot seal 40, preferred 30mm is to 200mm, and even preferred 60mm is to the incurvature radius r 2 of 100mm.Like this, realize slot seal 40 direction effective change and do not need cutting groove seal 40 and joint to connect its end, this will need extra work and will cause the sealing effectiveness reducing.
Fig. 6 is the viewgraph of cross-section of slot seal retainer 42 and slot seal 40.The slot seal 40 of non-inflated state shown in Figure 6 comprises wall 52, and this wall 52 surrounds the cavity 54 extending along slot seal 40.Section of the periphery of wall 52 forms contact surface 56, and this contact surface 56 is suitable for mode contiguous seal circle 46(Fig. 3 of sealing a) during operation.Another section of the periphery of wall 52 is provided with the formation engage of attachment arrangement for the form of the barb 58 of the length extension with along slot seal 40.The barb 58 that is arranged to cooperate with the corresponding groove 60 in slot seal retainer 42 makes it possible in the U-shaped profile by slot seal 40 being pressed into slot seal retainer 42 until barb 58 is locked in their grooves 60 separately, slot seal 40 to be arranged in slot seal retainer 42.
In addition, slot seal 40 is provided with waist 62, this waist 62 extends and allows slot seal 40 to expand towards the contact surface of squeezing trough 6 substantially at the waist of the aeration period slot seal 40 of slot seal 40 along the length of slot seal 40,, in the example illustrating, inflate towards sealing ring 46(Fig. 3 a-Fig. 3 upper surface b).
Fig. 7 illustrates the alternate embodiment 50b ' of the sweep 50b of slot seal retainer 42, and this embodiment is different from the embodiment describing hereinbefore with reference to figure 5.In embodiment same shown in Figure 7, the sweep 50b ' of slot seal retainer 42 has the total curvature of approximate 90 °.But the curvature of slot seal retainer 42 is not to be formed by the circular portion with the radius of curvature r1 limiting well, but formed by each multiple obtuse angle 64a, 64b that is all greater than significantly 90 °.The fact that U-shaped beam profile 50b ' has the inner width D1 ' of the width D 2 ' that is greater than significantly slot seal 40 makes it possible to produce the circular bend with radius of curvature r2 of slot seal 40 and need not be affected by the bight being formed by angle 64a, 64b.In embodiment shown in Figure 7, the radius of curvature r2 of slot seal 40 is identical with the radius of curvature of the slot seal 40 in Fig. 5, i.e. 75mm.Because slot seal 40 is designed to allow the expansion of main in the vertical direction to pass the opening in U-shaped beam profile at aeration period, so the radius of curvature r2 of slot seal 40 remains in the scope of 20mm-800mm of expectation along the whole sweep 50b ' of slot seal retainer 42 at aeration period.Can select different interior U-shaped profile width D1 ', D1 according to the different piece of slot seal retainer 42 " to obtain the radius of curvature r2 of expectation.
Should understand many variants of above-described embodiment can conceive in by claims limited range.
Described above can be lowered the squeezing trough 6 can clean, serve and to safeguard.Sometimes also expect to be adjusted according to the degree of dehydration of the characteristic of suspended substance and expectation the width in the squeezer gap 12 between squeezing trough 6 and dehydration cylinder 2, for example, by raising or reducing squeezing trough 6 until obtained the gap width of expectation.For the large variation of compensate for clearance width in the sealing effectiveness that keeps slot seal 40, sealing ring 46 can be become for example make the vertical adjusting of squeezing trough 6 with permission by the sealing ring 46 that is suitable for being attached at the sealing ring 46 of the alternative position on squeezing trough 6 instead of being soldered to groove 6 by means of screw to the mounting design of squeezing trough 6.
The squeezing trough 6 that can vertically regulate with respect to framework 27 has above been described.Certainly, as an alternative or supplement, can also vertically regulate framework 27 with respect to squeezing trough 6.Above-mentioned squeezer 1 is provided with the liquid inlet 10 of cleaning liquid.This kind of squeezer cleaning squeezer of can being known as.Naturally, slot seal retainer 42 and the slot seal 40 of describing respectively above can be used to the squeezer of other type, comprises the squeezer of the device that is not provided with the just dehydrated material of cleaning.
Above describe and how to have dewatered for the liquid suspension body that makes to comprise cellulose fibre with the squeezer of slot seal retainer 42 thering is slot seal 40.Should understand the suspended substance dehydration that this squeezer 1 can also be used to the solid biologic material that makes other type.The example of such material be before being used to fuel production or before biomass combustion by living beings dehydrated and other type that may be cleaned, the production of described fuel is for example undertaken by ethanol production process, biogas production process or fuel pellet production process.The example of the living beings that can dewater in above-mentioned squeezer is straw, bagasse, other annual plant, grass, dish leaf (tops), leaf, needle, marine alga or liver moss etc.Liquid in suspended substance can be water, but can be also other liquid, for example, and the various organic or inorganic solvents that can exist in suspended substance to be drained off.Similarly, can be the gas that air still also can be conceived other type for making the gas of inflatable slot seal inflation.
The described above slot seal 40 of being made by rubber.Those skilled in the art is the selection facing between different types of natural rubber and synthetic rubber, and selection between other polymeric material and non-polymeric material; These all fall within the scope of appended claim.
Below how inflatable described slot seal 40 is.Although this is preferred conventionally, also can conceive not inflatable slot seal.This slot seal can be solid completely, or is hollow wholly or in part.Suitably, slot seal has relatively high elasticity so that the sealing against the expectation of sealing ring 46 to be provided.
The slot seal retainer 42 of the essentially rectangular with fillet has above been described in addition.Should understand slot seal retainer can be other shape, such as oval or have an irregular polygonal shape of one or more fillet.Will also be understood that slot seal retainer can be arranged to keep have according to radius of curvature of the present invention and the bight of slot seal retainer not by the slot seal of sphering; Provide its concrete example with reference to figure 7.In addition, slot seal retainer 42 must not have U-shaped beam shape; Slot seal 40 can also otherwise be arranged on framework 27, for example, by means of screw terminals, makes the screw thread of screw terminals keep having the slot seal according to radius of curvature of the present invention.In this case, screw terminals will serve as slot seal retainer.In addition, do not need by slot seal retainer 42 and therefore slot seal 40 be arranged on framework 27; They can also be arranged on squeezing trough 6.According to the more not preferred embodiment of this solution, because be conventionally desirably in the draining of the satisfaction in service position, so slot seal 40 can be arranged on L shaped cross section 46, make here in suitable mode, for example adopt according to radius of curvature of the present invention by means of socket.In this case, slot seal retainer is served as in L shaped cross section.
Claims (15)
1. the squeezer for the liquid suspension body of solid biologic material is dewatered, described squeezer (1) comprises dehydration cylinder (2) and squeezing trough (6) that can transflective liquid, described dehydration cylinder (2) is arranged in framework (27) in rotatable mode, described squeezing trough (6) is suitable for squeezing described liquid suspension body liquid is squeezed to mode in described dehydration cylinder (2) against described dehydration cylinder (2) that can transflective liquid, described squeezing trough (6) is suitable for by means of being arranged in slot seal (40) in slot seal retainer (42) sealed with respect to described framework (27), described slot seal retainer (42) is around at least part of extension of described squeezing trough (6),
It is characterized in that, described slot seal retainer (42) is suitable at least keeping having along a part (50a-50d, 50b ') of the extension of described slot seal retainer (42) the described slot seal (40) of the incurvature radius (r2) between 20mm and 800mm.
2. squeezer according to claim 1, wherein said slot seal retainer (42) is suitable for having along the whole length maintenance of described slot seal retainer (42) the described slot seal (40) of the incurvature radius (r2) that exceedes 20mm.
3. squeezer according to claim 1 and 2, wherein said slot seal retainer (42) comprises four roughly straight parts (48a-48d), described four roughly straight part (48a-48d) be connected to each other to form the quadrangle with fillet by four sweeps (50a-50d), described sweep (50a-50d) has the incurvature radius (r1) that exceedes 20mm.
4. squeezer according to claim 1 and 2, wherein can between operating position and maintenance position, vertically regulate described squeezing trough (6) with respect to described framework (27), in described operating position, described squeezing trough (6) is arranged through the mode adjacency described framework (27) of described slot seal (40) to seal, and in described maintenance position, between described framework (27) and described squeezing trough (6), contiguous described slot seal (40) forms air gap.
5. squeezer according to claim 1 and 2, wherein said slot seal retainer (42) is fixedly attached to described framework (27).
6. squeezer according to claim 1 and 2, the cross section of wherein said slot seal retainer (42) is U-shaped roughly, for receiving described slot seal (40).
7. squeezer according to claim 6, wherein said slot seal retainer (42) is arranged in the U-shaped cross-section of the upper and described slot seal retainer (42) of described framework (27) under shed, and wherein said squeezing trough (6) is provided with sealing ring (46), described slot seal (40) is suitable for the upper surface in abutting connection with described sealing ring (46) with sealing means.
8. squeezer according to claim 1 and 2, wherein said slot seal (40) is inflatable.
9. squeezer according to claim 1 and 2, wherein said squeezer (1) is the water-removing press for paper pulp.
10. one kind for making the slot seal retainer of squeezer (1) of liquid suspension body dehydration of solid biologic material, described slot seal retainer (42) is suitable for being kept for the slot seal (40) that seals between squeezing trough (6) and framework (27) for dehydration cylinder (2) that can transflective liquid, described slot seal retainer (42) is characterised in that at least one the part (50a-50d along the extension of described slot seal retainer (42), 50b '), described at least one part (50a-50d, 50b ') be suitable for keeping having the described slot seal (40) of the incurvature radius (r2) between 20mm and 800mm.
11. slot seal retainers according to claim 10, wherein said slot seal retainer (42) is suitable for keeping its radius of curvature (r2) to exceed the slot seal (40) of 20mm along the whole length of described slot seal retainer (42).
12. according to the slot seal retainer described in claim 10 or 11, described slot seal retainer comprises four roughly straight parts (48a-48d), described four roughly straight part (48a-48d) be connected to each other to form the quadrangle with fillet by four sweeps (50a-50d), described sweep (50a-50d) has the incurvature radius (r1) that exceedes 20mm.
13. according to the slot seal retainer described in claim 10 or 11, and the cross section of wherein said slot seal retainer (42) is U-shaped roughly, for receiving described slot seal (40).
14. according to the slot seal retainer described in claim 10 or 11, and wherein said slot seal (40) is inflatable.
15. according to the slot seal retainer described in claim 10 or 11, and wherein said squeezer (1) is the water-removing press for paper pulp.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1050177-3 | 2010-02-25 | ||
| SE1050177A SE534578C2 (en) | 2010-02-25 | 2010-02-25 | Dewatering press and trough sealing holder, process for making trough sealing ring and trough sealing ring for dewatering press |
| PCT/EP2011/052548 WO2011104209A1 (en) | 2010-02-25 | 2011-02-22 | Dewatering press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102782212A CN102782212A (en) | 2012-11-14 |
| CN102782212B true CN102782212B (en) | 2014-12-10 |
Family
ID=43929143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180010780.2A Active CN102782212B (en) | 2010-02-25 | 2011-02-22 | Dewatering press |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2539504A1 (en) |
| CN (1) | CN102782212B (en) |
| BR (1) | BR112012021235A2 (en) |
| SE (1) | SE534578C2 (en) |
| WO (1) | WO2011104209A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9333468B2 (en) | 2012-09-24 | 2016-05-10 | Abengoa Bioenergy New Technologies, Llc | Soak vessels and methods for impregnating biomass with liquid |
| EP3868722A1 (en) * | 2020-02-20 | 2021-08-25 | Metso Sweden Ab | Dewatering assembly |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5063840A (en) * | 1990-07-27 | 1991-11-12 | Ingersoll-Rand Company | Pulp press vat providing enhanced bottom access |
| CN2505680Y (en) * | 2001-09-13 | 2002-08-14 | 张国林 | Pressurized sealing leak-stopping hose |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE532437C2 (en) | 2007-09-19 | 2010-01-19 | Andritz Oy | Drainage drum for dewatering cellulose pulp |
| SE531844E (en) * | 2007-12-13 | 2013-06-04 | Metso Paper Inc | Apparatus for washing and dewatering of pulp |
-
2010
- 2010-02-25 SE SE1050177A patent/SE534578C2/en not_active IP Right Cessation
-
2011
- 2011-02-22 WO PCT/EP2011/052548 patent/WO2011104209A1/en active Application Filing
- 2011-02-22 CN CN201180010780.2A patent/CN102782212B/en active Active
- 2011-02-22 BR BR112012021235A patent/BR112012021235A2/en not_active Application Discontinuation
- 2011-02-22 EP EP11704981A patent/EP2539504A1/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5063840A (en) * | 1990-07-27 | 1991-11-12 | Ingersoll-Rand Company | Pulp press vat providing enhanced bottom access |
| CN2505680Y (en) * | 2001-09-13 | 2002-08-14 | 张国林 | Pressurized sealing leak-stopping hose |
Also Published As
| Publication number | Publication date |
|---|---|
| SE534578C2 (en) | 2011-10-11 |
| WO2011104209A1 (en) | 2011-09-01 |
| EP2539504A1 (en) | 2013-01-02 |
| CN102782212A (en) | 2012-11-14 |
| SE1050177A1 (en) | 2011-08-26 |
| BR112012021235A2 (en) | 2016-05-17 |
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