EP3330068B1 - Dispositif de déshydratation de produit fluide ou coulant entrant - Google Patents

Dispositif de déshydratation de produit fluide ou coulant entrant Download PDF

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Publication number
EP3330068B1
EP3330068B1 EP17199701.8A EP17199701A EP3330068B1 EP 3330068 B1 EP3330068 B1 EP 3330068B1 EP 17199701 A EP17199701 A EP 17199701A EP 3330068 B1 EP3330068 B1 EP 3330068B1
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EP
European Patent Office
Prior art keywords
segments
holes
shell pipe
pipe
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17199701.8A
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German (de)
English (en)
Other versions
EP3330068C0 (fr
EP3330068A1 (fr
Inventor
Dietmar Ulm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andritz AG
Original Assignee
Andritz AG
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Filing date
Publication date
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Publication of EP3330068A1 publication Critical patent/EP3330068A1/fr
Application granted granted Critical
Publication of EP3330068C0 publication Critical patent/EP3330068C0/fr
Publication of EP3330068B1 publication Critical patent/EP3330068B1/fr
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Classifications

    • 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
    • B30B9/12—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 pressing worms or screws co-operating with a permeable casing
    • B30B9/124—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 pressing worms or screws co-operating with a permeable casing using a rotatable and axially movable screw
    • 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
    • B30B9/26—Permeable casings or strainers
    • 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
    • B30B9/12—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 pressing worms or screws co-operating with a permeable casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/14—Drying solid materials or objects by processes not involving the application of heat by applying pressure, e.g. wringing; by brushing; by wiping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/086—Presses with means for extracting or introducing gases or liquids in the mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
    • 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
    • D21C7/00—Digesters
    • D21C7/06—Feeding devices
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
    • F26B17/20—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/001—Handling, e.g. loading or unloading arrangements
    • F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/24—Wood particles, e.g. shavings, cuttings, saw dust

Definitions

  • the invention relates to a device for dewatering pourable or flowable feed material, for example wood chips, by compacting it, with a housing with a casing tube in which a shaft with circumferential helices rotates about an axis of rotation, the feed material being transported and compacted through the housing and the pressate is led out of the device through openings in the jacket tube and an inner tube is provided, the inner tube is constructed from segments which have openings, the segments resting with their outer surface directly on the inner surface of the jacket tube and the openings of the segments the openings of the jacket tube, the openings of the segments having a smaller cross section than the openings of the jacket tube.
  • Such devices are, for example, from DE 20 2007 007 038 U1 known, which discloses the features of the preamble of claim 1, these devices usually having a feeding device, for example in the form of a shaft. Special versions are used to feed wood chips into a pulp digester in the pulp industry and are often referred to as stuffing screws in this context. There are also applications, among other things, as a feed device for cookers in the wood pulp industry. Generally, a commodity is pumped from an area of lower pressure to an area of higher pressure or vice versa. These devices therefore also serve as a pressure lock.
  • the compression of the feed material also serves to create a highly compacted plug of material, which seals the inlet opening from the pressurized system of a cooker.
  • a highly compressed plug of material is also created, which in this case absorbs the impregnation chemicals when it relaxes.
  • the high compression of the feed material with the result of high contact pressure on the inside of the screw casing results in a high level of wear on both the screw helix and the casing tube, so that such devices have to be renewed or upgraded at regular intervals. This results in high costs and longer downtimes in production.
  • the worn housings are often renovated using build-up welding and mechanical processing.
  • the aim of the invention is to provide a device that is significantly more cost-effective and avoids the above disadvantages.
  • the replaceable parts become smaller and can be transported more easily. Because the segments rest directly on the inner surface of the casing tube, these parts are supported over the entire surface and can therefore also be manufactured with very small wall thicknesses.
  • Casing pipe and segments can also be made from different materials, which means that the casing pipe can absorb the forces and the segments can be made of a hard, brittle and therefore wear-resistant material.
  • the segments can remain largely unprocessed. This eliminates the need for large-scale, cost-intensive processing of both the external and internal surfaces.
  • the openings can also be cast, which means that subsequent, complex drilling, especially cutting drilling, becomes unnecessary. This also makes it possible to use harder materials that can no longer be processed using machining processes. By matching the openings of the segments with the openings of the casing pipe, optimal drainage is achieved.
  • a favorable embodiment of the invention is characterized in that the casing tube is cylindrical, although it can alternatively be conical. In this way, the device can be conveniently adapted to the needs of production and the screw required for it.
  • a favorable development of the invention is characterized in that the inner tube consists of at least 4, preferably 6 - 8 segments in the circumferential direction. This means that areas that are less worn can be left in place and only areas that are more heavily worn can be replaced.
  • An advantageous embodiment of the invention is characterized in that the inner tube consists of at least 2, preferably 3 - 4 up to 6 segments in the longitudinal direction, corresponding to the direction of the axis of rotation. On the one hand, this makes assembly much easier, but on the other hand, little worn areas can be left and only more heavily worn areas, especially in the area of high compression at the end, can be replaced.
  • a favorable development of the invention is characterized in that the openings of the segments expand conically towards the outer surface. This means that blockages in the openings can be largely avoided.
  • a further favorable embodiment of the invention is characterized in that the segments each have a groove in the longitudinal direction. These grooves can be used specifically to prevent the feed material from rotating.
  • An alternative embodiment of the invention is characterized in that the segments each have a particularly integrated strip in the longitudinal direction. These bars can also be used to prevent the feed material from rotating.
  • the design made of cast or sintered material enables cost-effective production and allows for no further processing. This means that the drainage openings can also be cast, eliminating the need for time-consuming drilling.
  • the material placed in the feed shaft for example wood chips, but also annual plants, straw, bagasse or the like, is guided through the screw spirals 13 of the screw 12 into the housing 10 and pressed through it, with liquid, usually water, which can also be mixed with chemicals , flows into the drain chamber 11 and is removed from there and, if necessary, recycled.
  • liquid usually water
  • MSD a highly compressed plug of material is also created, which in this case absorbs the impregnation chemicals when it relaxes.
  • Due to the high compression of the feed material high wear occurs on the inside of the housing 10, so that these housings often have to be replaced or armored.
  • One possibility is to remove the housing and make it usable again in a workshop through build-up welding and subsequent mechanical processing. This means that this part will not be available to the system operator as an emergency spare part for a long period of time.
  • replaceable wear shells can be used. However, these have to be manufactured very precisely, which often results in problems with the fit.
  • Fig. 2 shows a housing 10 according to the invention, which consists of an upper half-shell 15 and a lower half-shell 16. These have drainage openings 17, which can be arranged in groups as shown.
  • the half-shells 15, 16 have flanges 18 and 18 'at their ends, with which the housing 10 is fastened to the feed shaft 9 on one side and to the container 14 on the other side.
  • the two half-shells 15, 16 are held together with a number of screws 19.
  • Segments 21, 22 are arranged within the half-shells 15, 16. Additional screws 20 are used to fasten these segments 21, 22 to the housing 10. All segments 21, 22 together form an inner tube in the housing 10. Shown here are 6 segments 21, 22 distributed around the circumference. However, depending on the diameter of the housing 10, fewer or more segments can be distributed around the circumference.
  • the outer surface of the segments 21, 22 rests directly, ie without a gap, on the inner surface of the half-shells 15, 16 of the housing 10.
  • Fig. 3 the lower half-shell 16 is shown. It has flanges 18, 18' at the ends.
  • the individual segments 21, 22 have openings 23 for fastening using screws 20. You can see that different segments can be used here.
  • the segments 21 have a groove 24 along their length, which serves to prevent substances from rotating.
  • the number of segments 21 with groove 24 and segments 22 is selected based on the drainage behavior, but also the caking and thus carrying properties of the feed material.
  • the use of segments 21 and 22 makes it possible to adapt the dewatering and transport of the feed material accordingly.
  • segments 22' see Fig. 7
  • segments 22' can be used with strips to prevent the feed material from being carried away.
  • Three segments 21 and 22 arranged in a row are shown here in the longitudinal direction of the housing 10.
  • the openings 25 of the segments 21, 22 correspond directly to the openings 17 of the half-shells 15, 16, that is, each opening 25 in a segment 21, 22 is assigned an opening 17 in a half-shell 15, 16 of the housing 10. This is achieved, among other things, by fastening using screws 20.
  • the screws 20 are inserted from the inside, ie the interior of the cylinder formed by the segments 21, 22, and screwed on the outside using nuts.
  • the heads of the screws 20 are, for example, elongated with a spherical cap so that they are always in the correct position in the correspondingly shaped openings 23.
  • the screws 20 can also have recesses such as slots in the heads that are arranged on the inner (cylinder) surface of the segments 21, 22, which then form a plane due to the wear of the segments and the raised parts of the screw heads can be used as wear marks, which provide an indication of the necessary replacement of the segments 21, 22.
  • the segments 21, 22 are cast from wear-resistant material, whereby all openings 25 can be manufactured in a simple manner without subsequent mechanical processing.
  • the openings 25 can also be made conical very easily and do not have to be designed as stepped bores, which require frequent tool changes during production.
  • the segments can also be sintered from wear-resistant material, which also offers the possibility of incorporating the openings 25 in a simple manner.
  • contact surfaces 26 are created only on the long sides of the edges of the segments 21, 22 near the ends of the segments 21, 22, which must be slightly processed in order to ensure an exact fit of the individual segments 21, 22 .
  • the arrangement of several segments 21, 22 in the longitudinal direction also makes it possible to replace only the segments with the greatest wear. With this type of inner lining of the housing, repairs can be carried out easily and in a short time on site.
  • the invention is not limited by the drawings, in which slightly conical housings are shown.
  • cylindrical housings and thus cylindrical segments can also be used.
  • the housing could also consist of three or four parts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Molecular Biology (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Paper (AREA)
  • Filtration Of Liquid (AREA)
  • Screw Conveyors (AREA)
  • Joints Allowing Movement (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Processing Of Solid Wastes (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Claims (9)

  1. Dispositif de déshydratation de produit de départ qui est versable ou coulant, par exemple des copeaux de bois, par compression, comprenant un logement (10) avec un tube d'enveloppe (15, 16) dans lequel tourne un arbre doté de filets (13) sur sa circonférence autour d'un axe de rotation, dans lequel le produit de départ est transporté à travers le logement (10) et comprimé et le produit de pressage sort du dispositif par des trous (17) dans le tube d'enveloppe (15, 16), et dans lequel un tube interne est fourni, le tube interne est constitué de segments (21, 22) qui comprennent des trous (25), dans lequel la surface externe des segments (21, 22) repose directement sur la surface interne du tube d'enveloppe (15, 16) et les trous (25) dans les segments recouvrent les trous (17) du tube d'enveloppe (15, 16), dans lequel les trous (25) des segments (21, 22) ont une section transversale inférieure à celle des trous (17) du tube d'enveloppe (15, 16), caractérisé en ce que chaque trou (25) des segments (21, 22) est attribué à un trou (17) du tube d'enveloppe (15, 16), les trous (25) des segments (21, 22) correspondant directement aux trous (17), c'est-à-dire chaque trou (25) dans un segment (21, 22) est attribué à un trou (17) dans le tube d'enveloppe (15, 16), et les segments (21, 22) étant fabriqués en fonte résistante à l'usure ou en matériau fritté.
  2. Dispositif selon la revendication 1, caractérisé en ce que le tube d'enveloppe (15, 16) est cylindrique.
  3. Dispositif selon la revendication 1, caractérisé en ce que le tube d'enveloppe (15, 16) est conique.
  4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le tube interne comprend au moins 4, de préférence 6 à 8 segments (21, 22) dans la direction circonférentielle.
  5. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le tube interne comprend au moins 2, de préférence 3 à 4 et jusqu'à 6 segments (21, 22) dans la direction longitudinale conformément à la direction de l'axe de rotation.
  6. Dispositif selon les revendications 1 à 5, caractérisé par les trous (25) dans les segments (21, 22) devenant plus larges coniquement en direction de la surface externe.
  7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les segments (21, 22) ont chacun une rainure (24) dans la direction longitudinale.
  8. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les segments (21, 22) ont chacun une barrette (27) dans la direction longitudinale, en particulier une barrette intégrée.
  9. Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé en ce que les segments (21, 22) ont des trous (23) pour fixer les segments (21, 22) à l'aide de vis (20).
EP17199701.8A 2016-12-02 2017-11-02 Dispositif de déshydratation de produit fluide ou coulant entrant Active EP3330068B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA51097/2016A AT518983B1 (de) 2016-12-02 2016-12-02 VORRICHTUNG ZUM ENTWÄSSERN VON SCHÜTTFÄHIGEM ODER FLIEßFÄHIGEM AUFGABEGUT

Publications (3)

Publication Number Publication Date
EP3330068A1 EP3330068A1 (fr) 2018-06-06
EP3330068C0 EP3330068C0 (fr) 2024-01-03
EP3330068B1 true EP3330068B1 (fr) 2024-01-03

Family

ID=60201947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17199701.8A Active EP3330068B1 (fr) 2016-12-02 2017-11-02 Dispositif de déshydratation de produit fluide ou coulant entrant

Country Status (7)

Country Link
US (1) US10870250B2 (fr)
EP (1) EP3330068B1 (fr)
CN (1) CN108204715B (fr)
AT (1) AT518983B1 (fr)
CA (1) CA2987123C (fr)
EA (1) EA036223B1 (fr)
MY (1) MY190385A (fr)

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EP3896217B1 (fr) * 2020-04-17 2023-06-07 Cellwood Machinery AB Appareil et procédé de traitement d'une suspension comprenant un matériau organique et un liquide
CN112611170A (zh) * 2020-12-16 2021-04-06 苏州嘉诺环境工程有限公司 脱水设备
CN113442502A (zh) * 2021-08-10 2021-09-28 哈尔滨重齿传动设备有限公司 一种立式压块机
CN113983764A (zh) * 2021-11-22 2022-01-28 上海牧融机械设备有限公司 一种螺旋二次挤压脱水机
DK181177B1 (en) * 2021-11-29 2023-03-27 Haarslev Ind A/S Cage opening assistant
CN114198988B (zh) * 2021-12-29 2022-10-25 双胞胎（集团）股份有限公司 一种用于家畜饲料原料的脱水系统
CN118207743A (zh) * 2022-06-21 2024-06-18 汶瑞机械(山东)有限公司 一种双辊洗浆机的辊用线压力调节机构
CN116080128B (zh) * 2023-04-10 2023-06-23 蓬莱京鲁渔业有限公司 一种饲料用鱼粉加工研磨装置

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Also Published As

Publication number Publication date
EA036223B1 (ru) 2020-10-15
MY190385A (en) 2022-04-20
US20180154599A1 (en) 2018-06-07
CA2987123A1 (fr) 2018-06-02
EP3330068C0 (fr) 2024-01-03
EP3330068A1 (fr) 2018-06-06
CN108204715B (zh) 2021-08-17
AT518983A4 (de) 2018-03-15
CN108204715A (zh) 2018-06-26
US10870250B2 (en) 2020-12-22
BR102017024478A2 (pt) 2018-06-19
EA201792416A1 (ru) 2018-08-31
AT518983B1 (de) 2018-03-15
CA2987123C (fr) 2023-08-08

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