CN1188521A - Disc refiner with conical ribbon feeder - Google Patents
Disc refiner with conical ribbon feeder Download PDFInfo
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- CN1188521A CN1188521A CN 96194922 CN96194922A CN1188521A CN 1188521 A CN1188521 A CN 1188521A CN 96194922 CN96194922 CN 96194922 CN 96194922 A CN96194922 A CN 96194922A CN 1188521 A CN1188521 A CN 1188521A
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- band
- feeding
- feed mechanism
- disk
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Abstract
A feeder assembly (36) for lignocellulosic chip refiner (10) has a conical core (50) having a major diameter end and a minor diameter end. A helically coiled ribbon (38) is supported by and extends longitudinally in spaced relation with the core. The ribbon is defined by turns (40) of increasing diameter extending from the minor to the major diameter end of the core. A conical feed housing (54) surrounds the ribbon.
Description
Background of invention
The present invention relates to a kind ofly under superthermal and superpressure state, the refiner that the essential cellulose wood chip or the similar material of high concentration carried out fiber separation more particularly, relates to wood chip is fed in one or more rotating circular disks of this refiner.
Rotating disc for a kind of disc mill, at the existing difficulty of feeding wood chip under superthermal and superpressure state, thereby all different measures have been adopted, comprising in the housing of a cylindrical shape conveyer, adopt a kind of spiral bar belt feed rake, install it and rotating circular disk are coaxial, one of them example such as United States Patent (USP) 5,076,892 (authorizing people such as Fisher) are described, wherein band feeding assembly not only passes on the wood chip material towards the refiner disk, also allows the coaxial separation of backflow steam simultaneously, and this steam produces in disk in the correct grinding process, in some cases, this band feed rake is not driven by the main drive shaft of disk, and in some cases, it is again co-rotational with this driving shaft.
When wood chip when the entrance area of rotating circular disk is carried vertically, wood chip is subjected to a kind of very large centrifugal force, it forces wood chip radially to be pressed on the housing of conveyer.Its axial thrust load is that material is sent to main active force in the disk, and its numerical value is very little.Though the shape of helical strips itself can provide a kind of axial thrust load that is used to transport wood chip, but preferably can there be a kind of mode easily to provide a kind of additional axial force to wood chip, so that overcome the backflow steam pressure of increase, this power results from the high-power refiner of designer's manufacturing.
Summary of the invention
Therefore, one object of the present invention is for the high concentration refiner provides a kind of modified strip-type feeding unit, compares with known strip-type feeding unit, and it can produce bigger active force along direction of transfer.
Just in the broadest sense of the present invention, this purpose is achieved in that places an elongated core, and it has first end and the second end, and spirality around band, it is being supported and is extending longitudinally, and keeps a determining deviation with core.Along the direction of core towards first end, the diameter of the spiral coil that band surrounded increases gradually.A feeding housing that comprises a cone portion is looped around around the band tightly, and it also has an opening, and by this opening, wood chip can be admitted on the band.
In a specific embodiment of the present invention, above-mentioned purpose realizes that by such fed agency it comprises an elongated core, and this core has one section tapered portion, the larger diameter end of tapered portion is connected with the hub of rotating circular disk, and its smaller diameter end is then mutually opposed with hub.Article one, helical strips is being supported by core and along its longitudinal extension.Band forms several circles.On the large diameter direction of core, the diameter of circle increases gradually, has so just formed a feeding channel between band and core.
In a preferred embodiment, a high concentration refiner comprises a rotating circular disk, and it has a working face, and this working face comprises first inlet surface and first lapped face that is positioned at radial outside that are positioned at radially inner side.One second inlet surface and first inlet surface mutually and put, thereby constituted an inlet gap that has inlet portion.Second lapped face and first lapped face mutually and put grind the gap thereby formed one, and it roughly extends radially outward from the inlet gap.Axle and disk join, so that disk is rotated around a rotating shaft.A feed mechanism is being supported so that rotate around rotating shaft, thereby transports wood chip towards the surface of disk, makes it to enter in the inlet gap.This feed mechanism comprises a roughly spiral band, and it has formed several spiral coils, and the diameter of these circles increases gradually, thereby makes one of diameter maximum enclose the import department that is positioned at the inlet gap.Feed mechanism is the part of whole feeding assembly, the feeding assembly also comprise a taper chamber, it be looped around tightly the taper band around.Also have some devices to be used under pressure state, receiving the infed material that comes from the refiner outside, and the band that the material of these feedings is delivered to feed mechanism by the feeding chamber get on.
Feed mechanism preferably is connected with the hub of disk, so that rotation jointly with it promptly drives disk and feed mechanism simultaneously with same driving shaft, its rotating speed is preferably 1500 rev/mins or bigger.
Feed mechanism preferably includes a fuse that has the tapering, the ratio that increases to of the increase of taper diameter and band loop diameter, so just, formed a passage that is roughly annular, the circulation area in its cross section roughly is uniform, but, on the direction in disk inlet gap, the overall diameter of passage is cumulative.When wood chip when band is transported, centrifugal force will force wood chip to press to the overall diameter of band, and lean the feeding cavity.Along with the increase of ferret diameter, centrifugal force also increases in the lump.But owing to be subjected to the tapered influence of band, an additional axial thrust load will produce, and it will force the direction motion of fiber towards the inlet gap, and finally arrives at the disk of refiner.This additional axial force results from the shape of taper, and it is made a match mutually with the known applied force of high speed band feeding unit, has strengthened wood chip is sent into ability in the gap that enters the mouth, at this backflow steam is isolated.As traditional band feeding unit, backflow steam is to leave disk to flow out along the inner-diameter portion whose that feeds the assembly passage.
Of the present invention another significant advantage relevant with this embodiment is to allow directly axially outwards separating out from band feeding housing along refiner of steam, and in this embodiment, feeding assembly cantilever support from the disk hub.And drive by the main drive shaft of driver plate.Exhaust steam end at this feeding assembly can be provided with some radial blades, so that the separating effect of reinforcing fiber and exhaust steam.These isolated fibers are sent into the correct grinding district then again.
The enhancing transit area that the present invention was suitable for goes for carrying out the refiner of operation equally under normal pressure.
The accompanying drawing summary
By the following explanation of the preferred embodiments of the present invention being done with reference to accompanying drawing, above-mentioned purpose of the present invention and his purpose and advantage thereof will be understood more, in the accompanying drawing:
Fig. 1 is the generalized section that comprises a high concentration disc mill of the preferred embodiment of the present invention;
Fig. 2 is a width of cloth perspective view of modified feeding assembly of the present invention, and this assembly is used in the refiner shown in Figure 1;
Fig. 3 is a curve, and it has been described tapered strip belt of the present invention and has fed the improvement of conveying capacity being done to device.
The detailed description of preferred embodiment
Fig. 1 and Fig. 2 have represented a disc mill 10 and local enlarged perspective thereof respectively, and this machine can separate by wood chip and the similar material to high concentration under the state of superthermal and superpressure.Rotating disc 12 has a working face 14, and it can comprise and somely is attached to plate on this rotating disc with manner known in the art.Working face 14 has first inlet surface 16 and first lapped face 18 that is positioned at radial outside that are positioned at radially inner side, and surface 16 and 18 all rotates with this disk.Second inlet surface 20 and first inlet surface 16 mutually and put, thereby formed an inlet gap 22, this gap has an inlet portion 24.Second lapped face 26 and first lapped face 18 are involutory, and have formed one thus and have ground gap 28, and it has constituted a correct grinding zone that is roughly extended radially outward by inlet gap 22.
In described embodiment, second inlet surface 20 and second lapped face all are bearing in the pressure housing 30 by static state, and disk 12 then rotates in this housing.An axle 32 links to each other with this disk, so that make this disk around a rotation 34 rotation, in this connection, the characteristics of above-mentioned disc mill can go out as shown in FIG., also can be as the commercialization of various other types in the prior art disc mill.
According to the present invention, there is a feed mechanism 36 being supported, 34 rotations around the shaft so that under pressure state, are carried wood chip towards the surface 14 of disk 12, and are made it to enter in the inlet gap 22.This feed mechanism comprises a roughly spiral band 32, and it has several spiral coils 40, and from the end 42 of this feed mechanism away from disc surfaces 14, to the other end 44 of this feed mechanism near disc surfaces 14 places, the diameter of spiral coil increases gradually.One circle 40 of diameter maximum ', its periphery is positioned at the porch 24 in inlet gap 22.
This feed mechanism has a core 48 that extends vertically, and it preferably contains a cone 50, and along from the direction of an end 42 to the other end 44, its diameter is cumulative, and the ratio of its growth is preferably identical with the increasing diameter vast scale of spiral coil 40.Rely on pillar 39, with hurricane band 38 clearance-types be fixed on the core 48.
This effect can be as seen from Figure 3, each chart shows because the circumference active force, attempts wood chip is radially extrapolated, and acts on the relation line between the percentage of theoretical separating force on the wood chip and the feeding band length in Fig. 1 and 2.The similarity relation line of also having represented a relevant conveying capacity among the figure, be conveying capacity and axially between relation, though keep roughly constant along the ratio between this its separating force of strip-type feed rake length direction and the conveying capacity, the present invention has obtained tangible advantage by the numerical value that improves absolute conveying capacity.Its ratio depends on the size of cone angle.Along the length direction of feed rake, to 233 times, and this power is that of conveying capacity that traditional round screw thread screw thread sheet is produced replenishes to its conveying capacity by 139 multiplications of gravity.
In described embodiment, disk 12 is by means of a hub or hub portion 52 and be connected with axle 32, and its feed mechanism is stretched along rotating shaft cantilevered from hub, like this, band just rotates with the speed identical with disk under the drive of disc shaft, for example 1800 rev/mins, in more modern design, its speed is up to 2400 rev/mins.Spiral coil 40 ' outer radius portion if facing to leading to the import position 24 in the gap 22 that enters the mouth, centrifugal action power will effectively outwards promote wood chip, makes it to enter in the gap.The correct grinding effect meeting in (i.e. correct grinding district) produces some steam in grinding gap 28, and a part wherein will radially outwards flow from disk, and another part wherein will be back to outside the inlet gap 22.The steam of these backflows will be drawn out of along the direction away from disk 12 along the inner radial zone of passage 55, and will discharge refiner by the coaxial line vapor discharge channel 58 in the feeding housing chamber 54.Feed mechanism 36 will with the reverse right-hand conveying wood chip of this backflow vapor phase, they are sent to 40 ' the position, by centrifugal force wood chip is sent into import 24 herein and is intercepted and captured by inlet gap 22.
Is connected 74 owing to exist bolt between core 48 or its extension and the hub 52, makes a kind of close-fitting relation of formation between assembly 36 and the disk hub 52 that feeds, thereby help the realization of above-mentioned effect.In single-deck grinding machine as shown in the figure, preferably an end 60 of axle 32 is fastened on the hub 52, and is suitable for doing the rotation driving away from the other end 62 of disc surfaces.Housing front wall portion 30 ' static plate 64,66 preferably is housed, they have formed second inlet surface and second lapped face respectively.The periphery 40 of the spiral coil of diameter maximum ' just in time be positioned at the below of plate 64, and certain interval is arranged with it, thus guarantee to keep the state of radial motion at the wood chip of the import department 24 of leading to the gap that enters the mouth.
The discharge of steam end 42 of feeding assembly 36 comprises an impeller 68 or similar device, and it has a plurality of radial blades 70, and this installs at least that the part is positioned at discharge-channel 58.Blade 70 extends radially from core 48, and it preferably is positioned within least one spiral coil 40.Blade will influence the fiber of being carried secretly in the backflow steam, make it to do radial motion towards the feeding chamber, so that wood chip is sent in the inlet gap 22 again.Core 48 preferably also comprises a roughly cylindrical circular part 72, and it axially stretches out from cone portion, and blade is attached thereto and connects.Core itself is that cone portion has a larger diameter end 76 specifically, and it is furnished with and is used for device that this larger diameter end is connected with hub 52, and for example bolt 74.
Other aspects of this refiner 10 can be identical with traditional machine.One framework 100 strengthens structure 102 around the feeding assembly around 30, one on shell.In the inside of framework 100, the outside of shell 30 exists some parts, and they are used for realizing the general function of a high concentration refiner.For example, label 106 is a seal, and it can prevent that the high pressure in the housing from betraying in the cavity along axle 12.One axial rolling bearing 108 is eliminated any labile state, and this instability may come from the correct grinding effect that carry out in disc surfaces 14 places.This function also may reside within the identical integral body arrangement, it is used to the displacement of plate is controlled, shown in label 110, thus can be according to the type of the wood chip that is finish grinded, the concrete parameter index of perhaps desiring to reach is that the characteristic of refined pulp is regulated grinding gap 28.At least need a bearing, shown in label 112.
Be readily appreciated that for the person of ordinary skill of the art above-mentioned invention also can be used for other the various refiners outside the type shown in the drawings.For example, in an alternative embodiment, band mechanism can not be subjected to the driving of main drive shaft, and is driven by the external motors of a special use.It is also understood that as mentioned above so-called " taper " speech should comprise " conical butt ".
Claims (13)
1. feeding assembly (36) that is used for cellulose wood chip refiner, it comprises that one has first, two ends (44,42) elongate core (48), the helical strips (38) that the longitudinal extension of certain interval is also arranged with it by the core supporting, this band is made of some circles (40), one feeding housing (54) is around this band, also has a peristome (46), passing the peristome wood chip can enter on the band, it is characterized in that along core on the direction of first end, the diameter of bar zone circle is cumulative, and the feeding housing comprise a tapered portion, it is tightly around band.
2. one kind is used for the refiner (10) of Nature of Separation cellulose infed material and analog, it comprises a rotating circular disk (12) that has working face (14), and this working face comprises that one is positioned at first inlet surface (16) of radially inner side and first lapped face (18) that is positioned at radial outside; One with mutually juxtaposed second inlet surface of described first inlet surface (20), thereby constitute one the inlet gap (22), it has an import department (24); One second lapped face (26) and described first lapped face mutually and put grind gap (28) thereby constitute one, and it extends radially outward from described inlet gap; An axle (32) is connected with described disk, and disk is rotated around a rotation (34); One feeding assembly comprises a feed mechanism (36), it is being supported can be around described rotation rotation, also has a feeding chamber (54) round this feed mechanism, so that with infed material be sent to disk the surface and make it to enter in the described inlet gap, described feed mechanism comprises a roughly spiral band (38), and it includes several spiral coils (40); Device (56) is used for receiving infed material, and it is delivered to the band place of feeding assembly; It is characterized in that:
From feed mechanism away from the end (42) of disc surfaces the other end (44) in the feed mechanism near disc surfaces, the diameter of spiral coil is cumulative, thereby make the periphery of a circle (40 ') of diameter maximum be positioned at the import department of leading to the gap that enters the mouth, and described feeding housing enlarges towards the direction of described disc surfaces, and surrounds described band tightly.
3. equipment as claimed in claim 2, it is characterized in that feed mechanism (36) comprises that also places the inner core (48) of described band (38), it extends vertically, also comprise a tapered portion (50), from the end (42) of feed mechanism to its other end (44), the diameter of this tapered portion increases, thereby forms a passage (55) between described core and band.
4. as claim 2 or 3 described equipment, it is characterized in that described feed mechanism (36) is driven by described axle (32), and rotate with described disk (12).
5. as the described equipment of arbitrary claim in the claim 2 to 4, it is characterized in that described disk (12) is connected with described axle (32) by hub (52), and described feed mechanism (36) supporting from described hub upper cantilever formula, extends along rotation (34).
6. as the equipment of arbitrary claim in the claim 2 to 5, it is characterized in that the described device that is used to receive and transport infed material also comprises a feeding pipeline (56), its forms an edge enters described feeding housing perpendicular to the direction of described rotation (34) feeding passage (57).
7. as the described equipment of arbitrary claim in the claim 2 to 5, it is characterized in that the described device that is used to receive and transport infed material also comprises a feeding pipeline (56), its forms an edge enters described band (38) perpendicular to the direction of described rotation (34) feeding passage (57).
8. as the described equipment of arbitrary claim in the claim 2 to 7, it is characterized in that described feeding chamber (54) also comprises a blow-off line (58), the coaxial extension of an end (42) of its relative feed mechanism (36).
9. as the described equipment of arbitrary claim in the claim 2 to 8, it is characterized in that being roughly conical butt around the feeding chamber of described band (38).
10. equipment as claimed in claim 8 or 9 is characterized in that an end (42) of described feed mechanism (36) also comprises a mutliblade impeller (68), and its at least a portion is positioned at described exhaust passage (58).
11. equipment as claimed in claim 10 is characterized in that blade (70) extends axially along core (48) in a spiral coil.
12. as claim 10 or 11 described equipment, it is characterized in that core (48) comprises a roughly cylindrical circular part (72), it extends out vertically from tapered portion (50), and is connected with described blade (70).
13. as the described equipment of arbitrary claim in the claim 2 to 12, it is characterized in that this refiner has a single-deck (12), it links to each other with an end (60) of described axle (32), and described axle also has the other end (62) away from disc surfaces, and this end can be rotated formula and drive;
Described disk links to each other with a stationary housings (30), and the plate device (64,66) that limits second inlet surface (20) and second lapped face (26) is fixedly connected on this stationary housings; And
Between the circumference of the spiral coil of diameter maximum (40 ') and the described plate device that limits second inlet surface a narrow and small gap is arranged in vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96194922 CN1188521A (en) | 1995-05-03 | 1996-03-22 | Disc refiner with conical ribbon feeder |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/434,017 | 1995-05-03 | ||
| CN 96194922 CN1188521A (en) | 1995-05-03 | 1996-03-22 | Disc refiner with conical ribbon feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1188521A true CN1188521A (en) | 1998-07-22 |
Family
ID=5128902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96194922 Pending CN1188521A (en) | 1995-05-03 | 1996-03-22 | Disc refiner with conical ribbon feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1188521A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100342975C (en) * | 2003-01-14 | 2007-10-17 | 美佐纸业股份有限公司 | Refining element |
| CN101432480B (en) * | 2006-04-26 | 2011-12-28 | 帝人芳纶有限公司 | Process for yarn or sliver refining |
| CN101597873B (en) * | 2008-03-12 | 2012-09-26 | 安德里兹有限公司 | Face-mounted installation fixture and associated methods |
| CN110382776A (en) * | 2017-03-03 | 2019-10-25 | 维美德公司 | Steam discharge in paper pulp or fiber refining machine |
-
1996
- 1996-03-22 CN CN 96194922 patent/CN1188521A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100342975C (en) * | 2003-01-14 | 2007-10-17 | 美佐纸业股份有限公司 | Refining element |
| CN101432480B (en) * | 2006-04-26 | 2011-12-28 | 帝人芳纶有限公司 | Process for yarn or sliver refining |
| CN101597873B (en) * | 2008-03-12 | 2012-09-26 | 安德里兹有限公司 | Face-mounted installation fixture and associated methods |
| CN110382776A (en) * | 2017-03-03 | 2019-10-25 | 维美德公司 | Steam discharge in paper pulp or fiber refining machine |
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