WO2014090474A1 - Presse à cylindres - Google Patents

Presse à cylindres Download PDF

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Publication number
WO2014090474A1
WO2014090474A1 PCT/EP2013/072324 EP2013072324W WO2014090474A1 WO 2014090474 A1 WO2014090474 A1 WO 2014090474A1 EP 2013072324 W EP2013072324 W EP 2013072324W WO 2014090474 A1 WO2014090474 A1 WO 2014090474A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw
worm
roll press
nip
press according
Prior art date
Application number
PCT/EP2013/072324
Other languages
German (de)
English (en)
Inventor
Wolfgang Schütze
Martin Schwarz
Original Assignee
Maschinenfabrik Köppern Gmbh & Co. Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Köppern Gmbh & Co. Kg filed Critical Maschinenfabrik Köppern Gmbh & Co. Kg
Priority to EP13780169.2A priority Critical patent/EP2928679A1/fr
Priority to KR1020157017728A priority patent/KR20150093742A/ko
Publication of WO2014090474A1 publication Critical patent/WO2014090474A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
    • B30B3/04—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with one another, e.g. with co-operating cones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/286—Feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/18—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using profiled rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/24—Extrusion presses; Dies therefor using screws or worms
    • B30B11/246—Screw constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B30B15/308—Feeding material in particulate or plastic state to moulding presses in a continuous manner, e.g. for roller presses, screw extrusion presses

Definitions

  • the invention relates to a roll press for briquetting, compacting and / or comminuting material, in particular for hot briquetting, with two press rolls and a feed device, with which the material to be processed is fed to the nip between the rolls, wherein the Zugarvor- direction at least one in a Has Schneckengeratiuse arranged and rotating driven feed screw, which has a worm shaft and a screw thread attached thereto, wherein the worm thread is formed by a shaft helically surrounding the screw helix. It may preferably be a continuous, but alternatively also a non-continuous or interrupted helix.
  • roller presses are known in various embodiments. They serve z. B. briquetting or compacting material, eg. B. for the production of Hot Briquetted Iron (HBI).
  • the feed device may have only a single feed screw, but alternatively also several feed screws.
  • the screws are used to feed the material to be compacted or shredded in the nip and optionally the generation of a form in the gap.
  • the feeder comes in the course of briquetting and compaction but also in the course of crushing therefore a special importance. Compared with a pure gravitational allotment, where there are speed limits by which the throughput of a machine is determined or limited, such speed limits can be considerably increased with the help of screws, whereby the economic
  • the basic structure of a roller press with screw feed is z. As described in DE 1 036 142 or DE 197 31 975 C2.
  • WO 2008/0781916 A1 discloses a roller press for the compacting of directly reduced iron or for the production of compacted iron of the type described in the introduction.
  • the screw diameter decreases in the direction of the nip.
  • the invention has for its object to provide a roller press for briquetting, compacting and / or crushing of material, in particular for hot application, in which the feed screws are characterized by a longer service life. This should reduce maintenance and repair costs.
  • the invention teaches in a generic roller press of the type described above that the worm thread or worm helix has a greater pitch in a lower end region assigned to the nip than in a nip facing away from the nip (and consequently facing a worm drive). upper area.
  • the invention is based on the surprising finding that can be significantly reduced by an increased pitch in the lower part of the screw and consequently by an increased distance of the individual helical sections or screw blades wear of the screw helix.
  • the background to this is the fact that the pressure range of the screw is distributed more uniformly over several leaves (or spiral sections). Due to the increased blade spacing in the lower area, the work done there or the pressure on the lower blade is partially transferred to the upper leaves. This leads to a reduction of the wear in the particularly stressed lower area by the wear on the entire area of the screw is "evened". In practice, it has been observed with conventional screws in the course of hot briquetting and compaction that the increasing wear is accompanied by an increase in the required torque on the screws.
  • the screws are controlled in such a way that a constant torque is maintained at the briquetting rollers.
  • a constant torque is maintained at the briquetting rollers.
  • an ever higher torque of the screws or a higher energy input is required in order to achieve a constant torque of the rollers and thus also a uniform product quality.
  • this is related to the fact that the screw is pointed with increasing wear.
  • the slope in the lower end region is greater than 5%, preferably more than 10% greater than the slope in the upper region. If necessary, the slope can also be 15% greater than in the upper area. It is expedient if the region of increased pitch extends over a certain screw section, preferably over a rotation angle of at least 180 °, z. B. at least 360 °. The transition from small to large slope may be gradual, but preferably continuous.
  • the worm helix have a greater thickness or thickness at least in regions in a lower end region facing the nip than in an upper region facing away from the nip. Greater thickness of the helical spiral means a greater thickness of the rotating helix, so that, as it were, reinforced helical blades are used.
  • the thickness of the screw helix in the lower end region is greater by at least 20%, preferably at least 40%, than in the upper region.
  • the screw may thus have an area with a smaller spiral flight thickness and a region with a larger spiral spiral thickness.
  • the thickness of the screw flight can also increase completely or over a certain section continuously up to a certain "final thickness".
  • the region of the increased thickness it is expedient for the region of the increased thickness to extend at least over a rotation angle range of 360 °, so that at least one "full helix spiral" or one full helix rotation with an increased thickness is provided.
  • the invention is based on the knowledge that the service life of the feed screw can be increased by this design. Because the screw according to the invention provides in the area in which increased wear is observed, namely in the lower end, reinforced sheets and thus more material (for wear) available.
  • This second aspect of the invention can be combined with the above-explained first aspect of the invention (increased pitch) or realized independently.
  • the worm thread forming the worm thread is preferably connected as a (continuous) worm spiral fixed to the worm shaft. It can basically be made separately and z. B. welded to the worm shaft. Preferably, however, the worm helix is manufactured in one piece with the shaft. You can z. B. be machined by machining "from the full", z. B. be milled from the solid. However, alternative types of production, in particular casting, are also included.
  • the described enlarged thickness of the lower screw blades can in
  • the feeding device of such a roller press only has a feed screw, the z. B. can be oriented vertically.
  • the feeder may comprise two or more screws, e.g. B. along the nip are arranged one behind the other and optionally also can be oriented obliquely to the vertical.
  • a roller press for a hot working, z. B. for hot briquetting or hot compacting under protection particularly preferred for the hot briquetting or hot compacting of iron-containing feed material, eg. B. directly reduced iron.
  • the invention also relates to a feed screw for a roll press of the type described.
  • the feed screw described is consequently also placed under protection on its own.
  • FIG. 3 shows a feed screw according to the invention in a first embodiment
  • FIG. 4 shows a feed screw according to the invention in a second embodiment.
  • Fig. 1 is simplified and only partially a roller press for the processing of granular material, eg. For example, for briquetting or compacting.
  • the roller press has two press rollers 1, which are driven in opposite directions rotating.
  • the press rolls 1 are usually equipped with pressing tools, not shown, and / or a wear layer.
  • briquetting or compaction briquetting or compacting tools with corresponding mold cavities or the like are generally provided.
  • the roller press on a feeding device 2, with which the material to be processed is fed to the only indicated nip 3.
  • the feed device 2 has a feed screw 4, which is arranged in a screw housing 5.
  • the feed screw 4 is driven in rotation, that is, it is provided with a drive, not shown.
  • the feed screw 4 has a worm shaft 6 on the one hand and a worm thread fastened thereto on the other hand.
  • the worm thread is formed by a worm shaft 7 helically surrounding the worm shaft 6 in a continuous manner.
  • Fig. 2 shows schematically simplified and fragmentary a feed screw 4 according to the prior art, which is cylindrical.
  • the worm shaft 6 has a constant diameter d in the area of the worm thread.
  • the screw helix 7 has a constant diameter D.
  • FIG. 3 shows a feed screw according to the invention in a first embodiment.
  • the worm thread or the worm spiral 7 has, in a lower end region 7a facing the nip 3, a greater pitch P2 than in an upper region 7b facing away from the nip 3 and thus facing a worm drive, not shown. It can be seen that the pitch P2 in the lower end area 7a is greater than the pitch P1 in the upper area 7b. In the transition region between the upper region and the lower region results in a mean slope P '. Through this screw geometry, the wear can be reduced in the manner described and thus increase the service life of the screw 4.
  • Fig. 4 shows an alternative embodiment, which also leads to a longer service life of the screw 4.
  • the pitch P1 in this embodiment is constant over the entire area of the helix 7.
  • the screw flight 7 has a greater thickness in the lower end region 7a than in the upper region.
  • the thickness S2 of the screw helix 7 in the lower region is greater than the thickness S1 in the upper region. Between these areas, a transition region with continuously increasing thickness can be realized.
  • the pitch P1 is constant.
  • the thickness of the helix 7 or of the helical blades means their strength and consequently their strength in a direction parallel to the shaft axis.
  • the diameter of the screw helix means the diameter in a radial extent perpendicular to the shaft axis.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

L'invention concerne une presse à cylindres servant à compacter, briqueter et/ou broyer un matériau, notamment pour le briquetage ou le compactage à chaud. La presse à cylindres possède deux cylindres de compression et un dispositif d'amenage avec lequel le matériau à traiter est amené dans l'emprise des cylindres. Le dispositif d'amenage comporte au moins une vis d'amenage sans fin, disposée dans un carter de vis sans fin et entraînée en rotation, qui comporte un arbre de vis sans fin et un filet de vis fixé à celui-ci, lequel est formé par une spire de vis sans fin qui entoure l'arbre de vis sans fin en spirale. La presse à cylindres est caractérisée en ce que le filet la spire de vis présente dans une zone d'extrémité inférieure qui fait face à l'emprise des cylindres un pas plus grand que dans une zone supérieure à l'opposé de l'emprise des cylindres.
PCT/EP2013/072324 2012-12-10 2013-10-24 Presse à cylindres WO2014090474A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13780169.2A EP2928679A1 (fr) 2012-12-10 2013-10-24 Presse à cylindres
KR1020157017728A KR20150093742A (ko) 2012-12-10 2013-10-24 롤 타입 프레스

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012104789.6 2012-12-10
DE202012104789.6U DE202012104789U1 (de) 2012-12-10 2012-12-10 Walzenpresse

Publications (1)

Publication Number Publication Date
WO2014090474A1 true WO2014090474A1 (fr) 2014-06-19

Family

ID=49474435

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/072324 WO2014090474A1 (fr) 2012-12-10 2013-10-24 Presse à cylindres

Country Status (4)

Country Link
EP (1) EP2928679A1 (fr)
KR (1) KR20150093742A (fr)
DE (1) DE202012104789U1 (fr)
WO (1) WO2014090474A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020151222A1 (fr) * 2019-01-25 2020-07-30 南京西普水泥工程集团有限公司 Dispositif de mise sous pression de matériaux

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106238134A (zh) * 2016-09-08 2016-12-21 泉州惠安博派信息技术有限公司 一种四辊碾粉机
CN109042810B (zh) * 2018-07-19 2020-11-20 龙庄润集团有限公司 一种猪头肉用绞碎机构
CN109939783A (zh) * 2019-04-17 2019-06-28 武汉耐恩贝有色金属科技有限公司 一种电子废料再利用回收黄金的设备及方法
KR102703836B1 (ko) * 2024-01-30 2024-09-05 장형수 저온 들기름 착유기

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE337468C (de) * 1921-06-01 Wilhelm Ponndorf Pressschnecke
DE1036142B (de) 1955-02-18 1958-08-07 Koeppern & Co K G Maschf Zufuehrvorrichtung fuer Walzenbrikettpressen fuer Schuettgueter
DE3220916A1 (de) * 1982-06-03 1983-12-08 Alexanderwerk Ag, 5630 Remscheid Walzenpresse zur verdichtung pulverfoermiger oder feinkristalliner gueter
JPH0825096A (ja) * 1994-07-15 1996-01-30 Sintokogio Ltd 金属屑のブリケッティングマシン
GB2306387A (en) * 1992-09-26 1997-05-07 Robin Hamilton Compaction apparatus
DE19854533A1 (de) * 1998-03-25 1999-09-30 Karl Schedlbauer Verfahren und Vorrichtung zum kontinuierlichen Strang- und Strangrohrpressen von Kleinteilen
DE19731975C2 (de) 1997-07-24 2003-08-07 Koeppern & Co Kg Maschf Verfahren zum Verhindern des Anhaftens von zu briketierendem Gut an einer Walzenoberfläche und Brikettierwalzenpresse
WO2006006820A1 (fr) * 2004-07-12 2006-01-19 Posco Appareil de fabrication de fers compactes a partir d'une quantite de materiaux reduite comprenant des fers reduits pulverulents directs et appareil de fabrication de fers en fusion dans lequel lesdits fers sont utilises
WO2008078191A2 (fr) 2006-12-22 2008-07-03 Clear Blue Security, Llc. Système de découverte d'un réseau
WO2008078916A1 (fr) * 2006-12-22 2008-07-03 Posco Appareil de fabrication de fers compactés

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE337468C (de) * 1921-06-01 Wilhelm Ponndorf Pressschnecke
DE1036142B (de) 1955-02-18 1958-08-07 Koeppern & Co K G Maschf Zufuehrvorrichtung fuer Walzenbrikettpressen fuer Schuettgueter
DE3220916A1 (de) * 1982-06-03 1983-12-08 Alexanderwerk Ag, 5630 Remscheid Walzenpresse zur verdichtung pulverfoermiger oder feinkristalliner gueter
GB2306387A (en) * 1992-09-26 1997-05-07 Robin Hamilton Compaction apparatus
JPH0825096A (ja) * 1994-07-15 1996-01-30 Sintokogio Ltd 金属屑のブリケッティングマシン
DE19731975C2 (de) 1997-07-24 2003-08-07 Koeppern & Co Kg Maschf Verfahren zum Verhindern des Anhaftens von zu briketierendem Gut an einer Walzenoberfläche und Brikettierwalzenpresse
DE19854533A1 (de) * 1998-03-25 1999-09-30 Karl Schedlbauer Verfahren und Vorrichtung zum kontinuierlichen Strang- und Strangrohrpressen von Kleinteilen
WO2006006820A1 (fr) * 2004-07-12 2006-01-19 Posco Appareil de fabrication de fers compactes a partir d'une quantite de materiaux reduite comprenant des fers reduits pulverulents directs et appareil de fabrication de fers en fusion dans lequel lesdits fers sont utilises
WO2008078191A2 (fr) 2006-12-22 2008-07-03 Clear Blue Security, Llc. Système de découverte d'un réseau
WO2008078916A1 (fr) * 2006-12-22 2008-07-03 Posco Appareil de fabrication de fers compactés

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020151222A1 (fr) * 2019-01-25 2020-07-30 南京西普水泥工程集团有限公司 Dispositif de mise sous pression de matériaux

Also Published As

Publication number Publication date
EP2928679A1 (fr) 2015-10-14
KR20150093742A (ko) 2015-08-18
DE202012104789U1 (de) 2014-03-13

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