EP0792191B1 - Broyeur a rouleaux - Google Patents

Broyeur a rouleaux Download PDF

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Publication number
EP0792191B1
EP0792191B1 EP95938404A EP95938404A EP0792191B1 EP 0792191 B1 EP0792191 B1 EP 0792191B1 EP 95938404 A EP95938404 A EP 95938404A EP 95938404 A EP95938404 A EP 95938404A EP 0792191 B1 EP0792191 B1 EP 0792191B1
Authority
EP
European Patent Office
Prior art keywords
grinding
damming
roller mill
rollers
rolls
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.)
Expired - Lifetime
Application number
EP95938404A
Other languages
German (de)
English (en)
Other versions
EP0792191A1 (fr
Inventor
Horst Brundiek
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.)
Loesche GmbH
Original Assignee
Loesche GmbH
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 Loesche GmbH filed Critical Loesche GmbH
Publication of EP0792191A1 publication Critical patent/EP0792191A1/fr
Application granted granted Critical
Publication of EP0792191B1 publication Critical patent/EP0792191B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/04—Mills with pressed pendularly-mounted rollers, e.g. spring pressed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs

Definitions

  • the invention relates to a roller mill according to the preamble of claim 1.
  • roller mills which are also known as airflow roller mills or roller bowl mills will be referred to as the center a grinding material flow from fresh material fed into a grinding bowl and coarse particles of a classifier, which is usually in the roller mill is integrated, by centrifugal force to the edge of the Grinding bowl and to one surrounding the grinding bowl Moving the blade ring.
  • the one acting on the regrind Centrifugal force is especially of the diameter and the Speed of the grinding bowl dependent.
  • the throughput capacity of a roller mill is significantly influenced by of the available grinding surface, that is from the Number and size of the grinding rollers used, and of determined the grinding speed. Doing so will be sufficient Each roller is supplied with regrind.
  • the throughput could be increased by increasing the speed a roller mill with the same, predetermined Geometries and the same number of grinding rollers increased become. This could result in a smaller roller mill be associated with a lower investment is.
  • an increase in speed is at the same time as an increase the centrifugal force that leads to the Grinding bowl in the area between two successive Milling rollers are partially emptied or emptied so that the grinding rollers are no longer supplied with regrind and the targeted increase in throughput cannot be achieved.
  • a roller mill is known from DE 36 42 814 A1, which a retention device between two grinding rollers Control of the grinding stock movement in the area of the grinding track.
  • the restraint is as an arcuate Baffle formed, which on holding devices on Housing of the roller mill attached and adjustable in height and inclination is.
  • a roller mill described in DE-PS 1 507 579 has compared to a material feed and between two grinding rollers a baffle through which a sighting of the in Grist moved in the direction of the bowl edge can be reached should.
  • the shape and height of the guide plate cause a split of the ground material and a separate discharge of the fine material flow and retention of the coarse material on the grinding track.
  • the invention has for its object to provide a roller mill with a low-wear and particularly efficient retaining device that ensures an adequate supply of regrind to the grinding rollers both at a normal and at an increased regrind speed, so that a higher throughput is guaranteed with less effort.
  • the invention is based on the consideration that is extraordinary low and clear compared to the known baffles reduced friction of pre-compaction or smoothing rollers for the desired, particularly efficient restraint use and the pre-compaction or smoothing rollers as To form accumulation rolls with a specifiable congestion effect and between two grinding rollers for weir-like To order retention of the regrind.
  • the roller mill has a retaining device a rotating accumulation surface wall between two grinding rollers on.
  • the rotating storage surface wall exercises this grinding material moved outwards on the grinding path of the grinding bowl a jamming effect.
  • the congestion effect is according to the invention of a rotating storage surface wall with at least one Accumulation roller reached, which is adjacent between two grinding rollers and which in addition to a storage area attached to the inside, facing the axis of rotation of the grinding bowl End face is formed, at least one more Has storage space.
  • a storage roller at least one storage ring on which the other Storage area is formed.
  • the storage surfaces expediently form the retaining rings using the axis of rotation or the lateral surface the storage roller almost a right angle.
  • the storage rings can be conveniently retrofitted to the Accumulation rolls are applied.
  • a detachable arrangement enables an adjustment of the storage areas of the storage rings accordingly the respective requirements.
  • the storage rings are made of a wear-resistant Material and roll on the grinding bed with a lateral surface from a relatively small radial width.
  • a roller mill has a rotating storage surface wall as a retaining device from several, for example two, storage rollers between each two grinding rollers.
  • the multiple storage rolls are arranged and dimensioned so that their end faces form a rotating weir to prevent the regrind from flowing off.
  • the rotating storage surface wall formed by accumulation rolls rolling on the grinding bed whose end face almost adjoin each other and as close as possible to the adjacent one Grinding roller are arranged.
  • the accumulation rolls generally have no grinding effect and are therefore usually not or only as small pressurized not to "jump". This will the friction with a very good accumulation effect is extremely low kept, which has a beneficial effect on the energy balance.
  • a spring damping system can expediently be provided with which the accumulation roller on the grinding bed is held.
  • a hold-down force for example through a spring damping system, can jump into the jam rollers be avoided.
  • a particularly simple limitation device sees a lever with a stop, one Set screw or a buffer.
  • the accumulation rollers are arranged in such a way that their turning axes at a lead angle or a Caster angle related to a radial arrangement.
  • the accumulation rollers are arranged in such a way that their elongated axes of rotation intersect with the axis of rotation of the grinding bowl or with the Form the longitudinal axis of the roller mill.
  • the accumulation rollers can the regrind and the desired throughput be arranged in such a way that the storage areas face the inside End faces a different radial distance and / or a different inclination to the axis of rotation of the Have a grinding bowl or to the long axis of the roller mill and overlap themselves and / or the grinding rollers.
  • the storage roll can be used in addition to Grinding bowl are driven in rotation.
  • the lateral surface areas formed between the baffle rings leveling the storage roller or beyond the grinding bed is smoothed and pre-compacted if the storage roll has a corresponding weight has or is additionally subjected to force.
  • the schematic representation acc. Fig. 1 shows a grinding bowl 2, which rotates via a drive becomes. That from above or from the side onto a grinding track 8 The regrind fed to the grinding bowl becomes between resilient pressed grinding rollers 6 and the grinding path 8 of the grinding bowl 2 crushed.
  • the spring pressure is in usually via a rocker arm and one interacting with it Hydraulic cylinder device (not shown).
  • the grinding rollers 6 are usually alone by one Frictional engagement with the grinding bed 7 present on the grinding track driven and have no separate drive.
  • About one Blade ring 4 (see also Fig. 2) is via a feed channel a fluid, usually air. That about the Vane ring 4 inflowing fluid transported from the grinding track 8 after rolling over by the grinding rollers 6 as a result centrifugal force thrown outwards Grist mixture of fine material and coarse grain upwards into the Area of a sifter (not shown).
  • the coarse grain can also at least partially from the classifier or the mill removed and via feeders after an external Circuit before the grinding rollers 6 are abandoned.
  • the grinding bowl 2 insufficiently crushed Grist between the grinding rollers 6 over the edge of the grinding bowl 11 is transported to the blade ring 4 are as restraint devices Accumulation rollers 10 arranged.
  • the accumulation rollers 10 alone by her Dead weight and possibly by a spring damping system on the grinding bed 7.
  • the storage rolls 10 have the primary task of free space between "seal" the grinding rollers 6 to prevent insufficiently chopped ground material is thrown off the grinding track 8 is loaded and the mill cycle.
  • Fig. 1 shows a first embodiment of the accumulation rollers 10, which only on an inner end face 14 have a storage surface 12.
  • the total storage areas 12 form a in the area of the inner end faces 14 almost dense storage surface wall 13 or a weir through which the ground material is retained between the grinding rollers 6 and fed on the grinding track 8 to the next following grinding roller 6 becomes. Only in the area of the grinding rollers 6 and thus After the shredding process, the regrind can move in the direction Shovel ring 4 can be moved and into the viewing area be transported.
  • Fig. 1 shows that the accumulation rollers 10th are arranged with a lead or caster angle in order an efficient jamming effect for that on a spiral railway moving regrind to reach.
  • the accumulation roller 10 is a second, particularly effective accumulation roller 10 shown in a longitudinal section, the axis of rotation 20 in Extension of the axis of rotation 3 of the roller bowl 2 in height the roller bowl 2 cuts.
  • Storage of the storage roll 10, which is not shown, can be analogous to the storage the grinding rollers 6 take place. If several accumulation rollers 10 are arranged and each have a particularly low weight have compared to the grinding rollers, there is also Possibility to attach the storage rollers 10 to the housing.
  • the accumulation roller 10 according to FIG. 2 has a storage surface 12 an inner end face 14 and a storage ring 17th on. This storage ring 17 runs in the area of an external, facing the housing wall 5 of the roller mill 18 and has another storage surface 15 Axis of rotation 3 of the grinding bowl.
  • Accumulation roller 10 according to Fig. 2 is frustoconical and due to of the two storage areas, namely the inner 12 and the outer, formed on the storage ring 17 storage surface 15, a particularly good retention effect.
  • FIG. 3 A further, alternative accumulation roller 10 is shown in FIG. 3.
  • This conical storage roller 10 is with three storage rings 17 trained. These can also be removed on the outer surface 19 of the storage roller 10 may be attached.
  • the associated Storage areas 15 extend radially from the Shell surface 19 of the accumulation roller 10 to the outside and are each arranged parallel to each other.
  • the on the storage rings 17 trained storage areas 15 run almost at right angles to the axis of rotation 20 of the accumulation roller 10, so that the Bowl edge 11 of the grinding bowl 2 blocked regrind and is held back.
  • the gap distance between the grinding track 8 can be advantageous and the lateral surfaces 19 of the accumulation rollers 10 with the aid of a Device (not shown) adjustable and dimensioned in this way be that the lateral surfaces 19 to leveling or also contribute to compaction of the grinding bed.
  • the storage rings 17 are made of a wear-resistant material.
  • the Storage areas 15 of the storage rings 17 can be flat, concave or be convex.
  • a cylindrical accumulation roller 10 of FIG. 4 has an axis of rotation 20, which runs parallel to the grinding track 8.
  • the Accumulation roller 10 is provided with two accumulation rings 17, so that together with a storage surface 12 on an inside Front 14 formed a total of three storage areas 12, 15 are. Even when rotating at high speed Grinding bowl 2 is at an almost adjacent Arrangement of accumulation rollers 10 and 6 grinding rollers efficient retention and grinding guaranteed, so that such an equipped airflow roller mill has a high Throughput performance with reduced energy consumption, less Wear of the restraint system and reduced Has maintenance expenditure.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un broyeur à rouleaux comprenant une auge de broyage (2), des rouleaux broyeurs (6) entraînés en rotation sur cette auge, ainsi que des dispositifs de retenue (10) destinés à influer sur le déplacement du matériau broyé entre lesdits rouleaux. En vue d'accroître la capacité de production d'un broyeur à rouleaux tout en ayant des frais d'investissement avantageux, il est prévu des dispositifs de retenue (10) efficaces et résistant à l'usure entre les rouleaux broyeurs (6), chacun d'eux étant réalisé sous la forme d'une paroi de retenue rotative composée d'un ou de plusieurs rouleaux de retenue (10). Ces derniers présentent des surfaces de retenue (12, 15) qui empêchent le déplacement du matériau broyé vers l'extérieur, ce qui permet de le retenir en vue d'assurer un broyage complémentaire. Suivant une première forme d'exécution, une surface de retenue (12) est réalisée sur la face avant intérieure d'un rouleau de retenue. Selon une variante d'exécution, des bagues de retenue (17) en saillie radiale présentent des surfaces de retenue supplémentaires (15).

Claims (14)

  1. Broyeur à rouleaux avec un chemin de broyage (8) sensiblement horizontal sur un plateau de broyage (2), avec des rouleaux de broyage (6) stationnaires qui roulent sur un lit de broyage (7) formé de produit à broyer disposé sur le chemin de broyage (8) du plateau de broyage (2) et avec des dispositifs de retenue (10) qui sont disposés de manière à influer sur le mouvement du produit à broyer entre les rouleaux de broyage (6), caractérisé par le fait qu'il est prévu comme dispositif de retenue (10) une paroi de retenue (13) tournante avec au moins un rouleau de retenue (10) et par le fait que le rouleau de retenue (10) qui roule sur le lit de broyage (7) entre les rouleaux de broyage (6) et qui, sur une face frontale (14) située à l'intérieur tournée vers l'axe de rotation (3) du plateau de broyage (2) présente une surface de retenue (12), est pourvu d'au moins un anneau de retenue (17) sur lequel une surface de retenue (15) supplémentaire est aménagée.
  2. Broyeur à rouleaux avec un chemin de broyage (8) sensiblement horizontal sur un plateau de broyage (2), avec des rouleaux de broyage (6) stationnaires qui roulent sur un lit de broyage (7) formé de produit à broyer disposé sur le chemin de broyage (8) du plateau de broyage (2), entre les rouleaux de broyage (6), de manière à influer sur le mouvement du produit à broyer, caractérisé par le fait qu'il est prévu comme dispositif de retenue (10) une paroi de retenue (13) tournante et par le fait que la paroi de retenue (13) tournante est formée d'au moins deux rouleaux de retenue (10) qui sont pratiquement en contact l'un avec l'autre par leurs faces frontales (14) pourvues d'une surface de retenue (12) et sont disposés à une distance aussi faible que possible des rouleaux de broyage adjacents (6).
  3. Broyeur à rouleaux selon la revendication 1 ou 2, caractérisé par le fait que l'anneau de retenue (17) au nombre d'au moins un, lequel est agencé de manière à former au moins une surface de retenue (15) supplémentaire sur le ou les rouleaux de retenue (10), dépasse radialement une surface périphérique (19) du/des rouleaux de retenue (10).
  4. Broyeur à rouleaux selon la revendication 1 ou 3, caractérisé par le fait qu'un anneau de retenue (17) est aménagé sur une face frontale (18) extérieure du rouleau de retenue (10), tournée vers le carter de broyeur (5).
  5. Broyeur à rouleaux selon la revendication 3 ou 4, caractérisé par le fait que plusieurs anneaux de retenue (17) sont disposés et par le fait que des zones de surface périphérique (19) entre les anneaux de retenue (17) et la surface de retenue (12) intérieure nivellent ou compactent le produit à broyer retenu.
  6. Broyeur à rouleaux selon une des revendications précédentes, caractérisé par le fait que les rouleaux de retenue (10) sont appliqués sur le lit de broyage (7) seulement par leur propre poids.
  7. Broyeur à rouleaux selon une des revendications précédentes, caractérisé par le fait que les rouleaux de retenue (10) ont un poids propre qui représente une fraction du poids des rouleaux de broyage (6).
  8. Broyeur à rouleaux selon une des revendications 1 à 6, caractérisé par le fait que les rouleaux de retenue (10) peuvent être soumis à une force de pression.
  9. Broyeur à rouleaux selon une des revendications précédentes, caractérisé par le fait qu'un dispositif est prévu à l'aide duquel la hauteur de la fente entre les zones de surface périphérique (19) du rouleau de retenue (10) et le lit de broyage (7) peut être réglée et/ou limitée.
  10. Broyeur à rouleaux selon une des revendications précédentes, caractérisé par le fait que les rouleaux de retenue (10) et les rouleaux de broyage (6) sont disposés de manière telle que le prolongement de leurs axes de rotation définit chaque fois un point d'intersection avec l'axe de rotation (3) du plateau de broyage (2).
  11. Broyeur à rouleaux selon une des revendications 1 à 9, caractérisé par le fait que les rouleaux de retenue (10) sont disposés avec un angle d'entrée ou un angle de sortie par rapport aux rouleaux de broyage (6), les prolongements des axes de rotation (20) des rouleaux de retenue (10) étant situé en dehors de l'axe de rotation (3) du plateau de broyage (2).
  12. Broyeur à rouleaux selon une des revendications 1, 3 à 11, caractérisé par le fait que les anneaux de retenue (17) sont réalisés en un matériau résistant à l'usure.
  13. Broyeur à rouleaux selon une des revendications 1, 3 à 12, caractérisé par le fait que les anneaux de retenue (17) présentent des surfaces de retenue planes ou courbes.
  14. Broyeur à rouleaux selon une des revendications 1, 3 à 13, caractérisé par le fait que les anneaux de retenue (17) sont démontables et/ou montés après coup.
EP95938404A 1994-11-25 1995-11-03 Broyeur a rouleaux Expired - Lifetime EP0792191B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4442099A DE4442099C2 (de) 1994-11-25 1994-11-25 Wälzmühle
DE4442099 1994-11-25
PCT/EP1995/004327 WO1996016742A1 (fr) 1994-11-25 1995-11-03 Broyeur a rouleaux

Publications (2)

Publication Number Publication Date
EP0792191A1 EP0792191A1 (fr) 1997-09-03
EP0792191B1 true EP0792191B1 (fr) 1999-08-25

Family

ID=6534212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95938404A Expired - Lifetime EP0792191B1 (fr) 1994-11-25 1995-11-03 Broyeur a rouleaux

Country Status (16)

Country Link
US (1) US6113015A (fr)
EP (1) EP0792191B1 (fr)
JP (1) JP3668253B2 (fr)
KR (1) KR100402327B1 (fr)
CN (1) CN1103640C (fr)
AU (1) AU3980895A (fr)
BR (1) BR9510391A (fr)
CA (1) CA2205387C (fr)
DE (2) DE4442099C2 (fr)
DK (1) DK0792191T3 (fr)
ES (1) ES2137548T3 (fr)
MX (1) MX9703803A (fr)
MY (1) MY129616A (fr)
TW (1) TW292983B (fr)
WO (1) WO1996016742A1 (fr)
ZA (1) ZA959149B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011044966A1 (fr) 2010-03-09 2011-04-21 Loesche Gmbh Broyeur à rouleaux

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19806895C2 (de) * 1998-02-19 2002-10-24 Pfeiffer Ag Geb Verfahren und Vorrichtung zum Optimieren des Mahlbettes von Walzenschüsselmühlen
CN100336602C (zh) * 2004-06-23 2007-09-12 吴碧碧 单元式辊盘粉碎机
US7267293B2 (en) * 2005-05-13 2007-09-11 Alstom Technology Ltd High efficiency bowl mill
US7637446B2 (en) * 2007-08-29 2009-12-29 Flsmidth A/S Roller mill for grinding solid material
DE102009015037B4 (de) * 2009-03-26 2011-03-31 Loesche Gmbh Wälzmühle
JP5857629B2 (ja) * 2011-10-27 2016-02-10 株式会社Ihi バイオマスミル
DE102012106553B4 (de) 2012-07-19 2014-05-22 Thyssenkrupp Resource Technologies Gmbh Zerkleinerung von Mahlgut in einer Vertikalrollenmühle
JP6728977B2 (ja) * 2016-05-26 2020-07-22 宇部興産機械株式会社 竪型粉砕機
US10646877B2 (en) * 2017-03-13 2020-05-12 General Electric Technology Gmbh System and method for adjusting a material bed depth in a pulverizer mill
JP7053358B2 (ja) * 2018-04-20 2022-04-12 株式会社ウェルディングアロイズ・ジャパン 竪型ミル
CN114473804B (zh) * 2021-12-31 2023-05-12 富联裕展科技(深圳)有限公司 表面加工装置
CN114643103B (zh) * 2022-04-02 2024-06-14 天津水泥工业设计研究院有限公司 一种立式辊磨挡料圈调整装置
CN116371532B (zh) * 2023-04-04 2024-01-12 山西御香园食品科技有限公司 一种半成品面粉处理设备及工艺

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE3642814A1 (de) * 1986-12-15 1988-06-16 Pfeiffer Ag Geb Sperrvorrichtung

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DE1507579B1 (de) * 1966-05-20 1970-09-24 Loesche Kg Vorsichteinrichtung fuer Walzenmuehlen
US4611765A (en) * 1983-06-30 1986-09-16 Onoda Cement Co., Ltd. Roller mill
US4981269A (en) * 1988-11-18 1991-01-01 Ube Industries, Ltd. Vertical mill
US5244157A (en) * 1989-07-04 1993-09-14 Loesche Gmbh Air flow rolling mill
DE3921986C1 (fr) * 1989-07-04 1990-10-25 Loesche Gmbh, 4000 Duesseldorf, De
DE4123526A1 (de) * 1991-07-16 1993-01-21 Erbsloeh Geisenheim Ind Minera Verfahren und vorrichtung zur aktivierung von schichtmineralien
DE4202784C2 (de) * 1992-01-31 2002-08-08 Loesche Gmbh Luftstrom-Wälzmühle
DE4229488C1 (de) * 1992-09-04 1994-02-17 Vogel Franz Ingbuero Kollergang

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
DE3642814A1 (de) * 1986-12-15 1988-06-16 Pfeiffer Ag Geb Sperrvorrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011044966A1 (fr) 2010-03-09 2011-04-21 Loesche Gmbh Broyeur à rouleaux
DE102010010752A1 (de) 2010-03-09 2011-09-15 Loesche Gmbh Wälzmühle

Also Published As

Publication number Publication date
CA2205387C (fr) 2005-03-01
BR9510391A (pt) 1999-04-06
DE4442099A1 (de) 1996-05-30
US6113015A (en) 2000-09-05
CN1103640C (zh) 2003-03-26
AU3980895A (en) 1996-06-19
JP3668253B2 (ja) 2005-07-06
CN1166796A (zh) 1997-12-03
DK0792191T3 (da) 2000-03-27
CA2205387A1 (fr) 1996-06-06
MX9703803A (es) 1997-08-30
KR100402327B1 (ko) 2004-02-05
DE4442099C2 (de) 1997-08-14
TW292983B (fr) 1996-12-11
WO1996016742A1 (fr) 1996-06-06
MY129616A (en) 2007-04-30
ZA959149B (en) 1996-06-19
JPH10510749A (ja) 1998-10-20
ES2137548T3 (es) 1999-12-16
EP0792191A1 (fr) 1997-09-03
DE59506696D1 (de) 1999-09-30

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