WO2003031070A1 - Wear plate assembly - Google Patents

Wear plate assembly Download PDF

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Publication number
WO2003031070A1
WO2003031070A1 PCT/EP2002/010525 EP0210525W WO03031070A1 WO 2003031070 A1 WO2003031070 A1 WO 2003031070A1 EP 0210525 W EP0210525 W EP 0210525W WO 03031070 A1 WO03031070 A1 WO 03031070A1
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WO
WIPO (PCT)
Prior art keywords
plate
plates
curvature
sole
shell
Prior art date
Application number
PCT/EP2002/010525
Other languages
French (fr)
Other versions
WO2003031070B1 (en
Inventor
René STEILS
Original Assignee
Magotteaux International
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 Magotteaux International filed Critical Magotteaux International
Priority to DE60204710T priority Critical patent/DE60204710T2/en
Priority to AT02767492T priority patent/ATE297810T1/en
Priority to EP02767492A priority patent/EP1432518B1/en
Publication of WO2003031070A1 publication Critical patent/WO2003031070A1/en
Publication of WO2003031070B1 publication Critical patent/WO2003031070B1/en

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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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/22—Lining for containers

Definitions

  • the present invention relates to a shielding system for a rotary mill comprising a rotary cylindrical shell intended to rotate about its longitudinal axis and to contain material to be ground and a load of grinding machines, the shielding system consisting of plates of individual shields arranged in juxtaposed rings fixed to the inner wall of the shell, each shielding plate comprising an inclined working face extending between a plate foot and a plate head and an opposite domed laying face facing the interior surface of the shell.
  • Such a crusher is described in document EP0998353.
  • This type of grinder is used in particular in cement works and in the mining industry.
  • the material to be ground is introduced on one side of the mill and, as it progresses towards the outlet, on the opposite side, it is ground and crushed between the grinding machines.
  • the cladding or armor plates of the mills have a base adapted to the radius of curvature of the ferrule and a profile varying according to the degree of lifting desired.
  • the adaptation of the shielding plate to the curvature of the mill requires a similar radius of curvature for the face of the plate and the shell of the mill to avoid breakage of the plate and local hammering of the shell.
  • the lifting effect desired depends on several factors related to the design of the crusher and the operating conditions of the crusher, necessitating choosing a determined value for lifting height of the plates, which can vary between 100 and 160 mm depending on the case. .
  • the object of the present invention is to provide a new shielding system for a rotary grinder of the kind described in the preamble which makes it possible to equip grinders of different diameters with a plate of standard size metal shielding and with the possibility of modifying the degree of lifting.
  • the shielding system proposed by the invention is characterized in that it comprises intermediate flanges intended to be inserted between the individual shielding plates and the shell of the crusher, each flange having a main face whose curvature is adapted to the curvature of the laying face of the adjacent armor plate and an opposite face whose curvature is adapted to that of the ferrule.
  • the system preferably includes at least two different types of midsoles which are distinguished by the radius of curvature of their main faces.
  • At least one of these types has main faces which form an angle ⁇ less than 10 ° between them.
  • the shielding plates can be bolted to the ferrule using fixing bolts having semi-spherical heads retained in corresponding semi-spherical housings of the shielding plate.
  • FIGS. 1a and 1b show cross sections through two different types of armor plates used until now in ball mills
  • Figure 2a shows a section through a first type of a midsole according to the present invention
  • Figure 2b shows a section through a second type of a midsole according to the present invention
  • Figure 3 shows a section through a shield fitted with soles according to Figure 2a;
  • FIGS. 4a and 4b show a section through a shield using in different ways the flanges of FIG. 2b and
  • Figure 5 shows a section through a shielding plate illustrating its fixing system.
  • FIGS. 1a and 1b show two well-known shielding plates 1a and 1b.
  • These plates 1a and 1b comprise an inclined working surface 2 which extends between a plate foot 5 of a height h and a plate head 3 of a height H, as well as a convex laying surface 4 applied to the inner surface of the shell, not shown, and rotating, in the case of FIGS. 1a and 1b, clockwise.
  • This laying surface 4 may optionally include, as shown in the figures in broken lines, recesses to reduce the weight of the plates.
  • the plates 1a and 1b are fixed to the ferrule using bolts not shown.
  • the plates 1a and 1b include housings to receive the head of the fixing bolts.
  • the plate 1 has a working surface 2 which is smooth, while the working surface of the plate 1b has longitudinal undulations or other protuberances and hollows of various shapes to reduce the sliding of the load during the rotation of the mill.
  • the laying surface 4 of the two plates must have a curvature which corresponds more or less to that of the shell, which causes the drawbacks mentioned in the introduction.
  • the invention proposes the use of intermediate soles as shown in FIGS. 2a and 2b.
  • FIG. 2a shows an example of a thin symmetrical flange 11 made of low-alloy steel and which therefore presents a possibility of slight deformation or also made of ductile cast iron of the spheroidal graphite cast iron type.
  • This sole 11 which has the same surface as that of a plate has two main curved faces 12 and 13, the head face 12 having a radius of curvature greater than that of the face 13.
  • the sole 11 has in its center a hole 16 for the passage of a fixing bolt.
  • FIG. 3 shows an example of the use of flanges 11 for fixing plates 10 of the kind of those of Figure 1a on a ferrule 30 of a crusher.
  • the curvature of the face 12 of the flanges 11 corresponds more or less to the curvature of the face for fitting the plate 10 while the curvature of the face 13 is adapted to the curvature of the ferrule 30.
  • the sole will adapt, by deformation, to the diameter and possible irregularities of the ferrule 30 to ensure, as shown in FIG. 3, an optimal seat for each armor plate 10. Without the presence of these soles, the plates 10, which have a laying surface with a radius of greater curvature than that of the ferrule, would have no support on the ferrule in the central region and would be quickly doomed to breakage.
  • the sole 11 of FIG. 2 is symmetrical and only makes it possible to tune the radii of curvature plate / ferrule without being able to modify the degree of lifting of the plate 10 which it supports. This sole will therefore be used when the lifting of the plate 10 corresponds to the desired lifting for good grinding efficiency of the mill in question.
  • FIG. 2b For the case where the raising of the armor plate 10 is too low or too important for the proper functioning of the crusher, the invention proposes a second type of sole which is illustrated in FIG. 2b.
  • This sole 14 also has two faces 12 and 15 with different radii of curvature to make the transition between the curvature of the plate 10 and that of the ferrule 30. However, here, the two faces 12 and 15 form an angle between them ⁇ included in 0.1 and 10 °, preferably between 1 ° and 3 °.
  • FIGS. 4a and 4b illustrate two different ways of using such a sole 14. In the configuration of FIG. 4a, the sole 14 raises the height of foot 5 of plate 10 thus reducing the difference between the height h (see also Figure 1a) of foot 5 of plate 10 and the height H of head 6 of plate 10, which reduces the lifting effect of the grinding load by the grinder.
  • the foot 5 of the plate remains almost at the same level, while the head 6 of the plate 10 is raised, which increases the difference between the height h of the foot of the plate 10 and the height H of the head of the plate, and thereby increases the lifting effect of the shield.
  • a sole 1 1 of the type of FIG. 2 will therefore be used having a face 12 adapted to the curvature of the face for laying the plate and a face 13 with a radius of curvature between 1, 2 meters and 1, 6 meters, preferably around 1, 3 m.
  • the adaptation of the curvatures between the base of the plates 10 and the shell 30 no longer has the same acuity due to the importance of the radii of curvature.
  • the laying face 4 of the single armor plate 10 itself has a radius of curvature such that it allows it to be used with or without a soleplate in a whole range of large shredders according to the radius of curvature chosen for the face. fitting the plate 10.
  • the use of a midsole is always recommended to avoid problems in service, ie a sole of the type 1 1 to avoid breakage and hammering of the shell 30 by the plate 10, or a sole of type 14 to vary, in addition, the lifting effect of the entire shield.
  • FIG. 5 illustrates the fixing of the armor plates and of the soles to the shell 30 of a grinder. This fixing is ensured by bolts 22 which pass through the plates 10, the flanges 11 or 14 and the ferrule 30.
  • the use of inclined flanges will require the use of bolts 22 with semi-spherical heads 17 which are housed in a corresponding housing also semi-spherical 18 of the plate 10. In this way, whatever the angle that the base of the plate 10 makes with the ferrule 30, the bolt 22 can be properly tightened without creating bends in the rod of the bolt 22 .
  • Bolted shields can have the disadvantage of material leakage through the bolt holes.
  • a washer 19 is used placed between the nut and the shell of the mill. This washer has a chamfer 20 intended to leave a space in which an O-ring 21 made of elastomer can be accommodated which compresses when the bolt is tightened and seals at the bolt hole.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Ceramic Products (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The invention relates to a wear plate assembly. In a rotary mill with an internal armouring system comprising individual armour plates (10), intermediary sole plates (11, 14) are provided in order to fix the aforementioned armour plates (10) to the ferrule. Said sole plates are distinguished by the radius of curvature of the main faces thereof and/or the angle between said main faces. If said sole plates (11, 14) are selected carefully, the same type of armour plates (10) can always be used regardless of the diameter of the mill.

Description

ASSEMBLAGE DE PLAQUES D'USURE ASSEMBLY OF WEAR PLATES
La présente invention concerne un système de blindage pour un broyeur rotatif comprenant une virole cylindrique rotative destinée à tourner autour de son axe longitudinal et à contenir de la matière à broyer et une charge d'engins broyants, le système de blindage étant constitué de plaques de blindage individuelles rangées en anneaux juxtaposés fixés à la paroi intérieure de la virole, chaque plaque de blindage comprenant une face de travail inclinée s'étendant entre un pied de plaque et une tête de plaque et une face de pose bombée opposée tournée vers la surface intérieure de la virole.The present invention relates to a shielding system for a rotary mill comprising a rotary cylindrical shell intended to rotate about its longitudinal axis and to contain material to be ground and a load of grinding machines, the shielding system consisting of plates of individual shields arranged in juxtaposed rings fixed to the inner wall of the shell, each shielding plate comprising an inclined working face extending between a plate foot and a plate head and an opposite domed laying face facing the interior surface of the shell.
Un tel broyeur est décrit dans le document EP0998353. Ce genre de broyeur est notamment utilisé en cimenterie et dans l'industrie minière. La matière à broyer est introduite d'un côté du broyeur et, au fur et à mesure de sa progression vers la sortie, du côté opposé, elle est broyée et concassée entre les engins broyants.Such a crusher is described in document EP0998353. This type of grinder is used in particular in cement works and in the mining industry. The material to be ground is introduced on one side of the mill and, as it progresses towards the outlet, on the opposite side, it is ground and crushed between the grinding machines.
Dans l'état actuel des choses, les plaques de revêtement ou de blindage des broyeurs ont une base adaptée au rayon de courbure de la virole et un profil variant en fonction du degré de relevage souhaité. L'adaptation de la plaque de blindage à la courbure du broyeur exige un rayon de courbure similaire pour la face de pose de la plaque et la virole du broyeur pour éviter la casse de la plaque et le martelage local de la virole. L'effet de relevage souhaité dépend de plusieurs facteurs liés à la conception du broyeur et aux conditions de marche de celui-ci, nécessitant de choisir une valeur déterminée de hauteur de relevage des plaques, laquelle pouvant varier entre 100 et 160 mm suivant le cas.In the current state of things, the cladding or armor plates of the mills have a base adapted to the radius of curvature of the ferrule and a profile varying according to the degree of lifting desired. The adaptation of the shielding plate to the curvature of the mill requires a similar radius of curvature for the face of the plate and the shell of the mill to avoid breakage of the plate and local hammering of the shell. The lifting effect desired depends on several factors related to the design of the crusher and the operating conditions of the crusher, necessitating choosing a determined value for lifting height of the plates, which can vary between 100 and 160 mm depending on the case. .
Tout ceci nécessite la création d'un modèle de plaque de blindage propre pour chaque broyeur et, par voie de conséquence, entraîne un coup élevé de réalisation ainsi qu'une immobilisation financière importante au niveau du stockage de pièces de rechange car, en général, un atelier de broyage comporte des broyeurs de dimensions parfois très différentes.All this requires the creation of a model of own armor plate for each shredder and, consequently, involves a high achievement and a significant financial downturn in the storage of spare parts because, in general, a grinding workshop includes grinders of sometimes very different dimensions.
Le but de la présente invention est de prévoir un nouveau système de blindage pour un broyeur rotatif du genre décrit dans le préambule qui permet d'équiper des broyeurs de différents diamètres avec une plaque de blindage métallique de dimension standard et avec la possibilité de modifier le degré de relevage.The object of the present invention is to provide a new shielding system for a rotary grinder of the kind described in the preamble which makes it possible to equip grinders of different diameters with a plate of standard size metal shielding and with the possibility of modifying the degree of lifting.
Pour atteindre cet objectif, le système de blindage proposé par l'invention est caractérisé en ce qu'il comporte des semelles intermédiaires destinées à être insérées entre les plaques de blindage individuelles et la virole du broyeur, chaque semelle ayant une face principale dont la courbure est adaptée à la courbure de la face de pose de la plaque de blindage adjacente et une face opposée dont la courbure est adaptée à celle de la virole. Le système comporte, de préférence, au moins deux types différents de semelles intermédiaires qui se distinguent par le rayon de courbure de leurs faces principales.To achieve this objective, the shielding system proposed by the invention is characterized in that it comprises intermediate flanges intended to be inserted between the individual shielding plates and the shell of the crusher, each flange having a main face whose curvature is adapted to the curvature of the laying face of the adjacent armor plate and an opposite face whose curvature is adapted to that of the ferrule. The system preferably includes at least two different types of midsoles which are distinguished by the radius of curvature of their main faces.
Au moins l'un de ces types comporte des faces principales qui font entre-elles un angle α inférieur à 10°.At least one of these types has main faces which form an angle α less than 10 ° between them.
Les plaques de blindage peuvent être boulonnées à la virole à l'aide de boulons de fixation ayant des têtes semi-sphériques retenues dans des logements semi-sphériques correspondants de la plaque de blindage.The shielding plates can be bolted to the ferrule using fixing bolts having semi-spherical heads retained in corresponding semi-spherical housings of the shielding plate.
D'autres particularités et caractéristiques ressortiront de la description détaillée d'un mode de réalisation préféré présenté ci-dessous, à titre d'illustration, en référence aux dessins annexés, dans lesquels : Les figures 1a et 1b montrent des coupes transversales à travers deux types différents de plaques de blindage utilisées jusqu'à présent dans des broyeurs à boulets ;Other particularities and characteristics will emerge from the detailed description of a preferred embodiment presented below, by way of illustration, with reference to the accompanying drawings, in which: FIGS. 1a and 1b show cross sections through two different types of armor plates used until now in ball mills;
La figure 2a montre une section à travers un premier type d'une semelle intermédiaire selon la présente invention ; La figure 2b montre une section à travers un deuxième type d'une semelle intermédiaire selon la présente invention ;Figure 2a shows a section through a first type of a midsole according to the present invention; Figure 2b shows a section through a second type of a midsole according to the present invention;
La figure 3 montre une section à travers un blindage équipé de semelles selon la figure 2a ;Figure 3 shows a section through a shield fitted with soles according to Figure 2a;
Les figures 4a et 4b montrent une section à travers un blindage utilisant de manières différentes les semelles de la figure 2b etFIGS. 4a and 4b show a section through a shield using in different ways the flanges of FIG. 2b and
La figure 5 montre une coupe à travers une plaque de blindage illustrant son système de fixation.Figure 5 shows a section through a shielding plate illustrating its fixing system.
Les figures 1a et 1b montrent deux plaques de blindage 1a et 1b bien connues. Ces plaques 1a et 1b comportent une surface de travail inclinée 2 qui s'étend entre un pied de plaque 5 d'une hauteur h et une tête de plaque 3 d'une hauteur H, ainsi qu'une surface de pose bombée 4 appliquée sur la surface intérieure de la virole non représentée et tournant, dans le cas des figures 1a et 1b, dans le sens des aiguilles d'une montre. Cette surface de pose 4, peut éventuellement comporter, comme représenté sur les figures en traits interrompus, des creux pour réduire le poids des plaques.Figures 1a and 1b show two well-known shielding plates 1a and 1b. These plates 1a and 1b comprise an inclined working surface 2 which extends between a plate foot 5 of a height h and a plate head 3 of a height H, as well as a convex laying surface 4 applied to the inner surface of the shell, not shown, and rotating, in the case of FIGS. 1a and 1b, clockwise. This laying surface 4, may optionally include, as shown in the figures in broken lines, recesses to reduce the weight of the plates.
Les plaques 1a et 1b sont fixées sur la virole à l'aide de boulons non représentés. A cet effet, les plaques 1a et 1 b comportent des logements pour recevoir la tête des boulons de fixation.The plates 1a and 1b are fixed to the ferrule using bolts not shown. For this purpose, the plates 1a and 1b include housings to receive the head of the fixing bolts.
La seule différence entre les plaques 1a et 1b est que la plaque 1a une surface de travail 2 qui est lisse, alors que la surface de travail de la plaque 1b possède des ondulations longitudinales ou autres excroissances et creux de formes diverses pour diminuer le glissement de la charge lors de la rotation du broyeur.The only difference between the plates 1a and 1b is that the plate 1 has a working surface 2 which is smooth, while the working surface of the plate 1b has longitudinal undulations or other protuberances and hollows of various shapes to reduce the sliding of the load during the rotation of the mill.
La surface de pose 4 des deux plaques doit avoir Une courbure qui correspond plus ou moins à celle de la virole, ce qui entraîne les inconvénients mentionnés dans l'introduction. Pour résoudre ce problème, l'invention propose l'utilisation de semelles intermédiaires tel que représenté sur les figures 2a et 2b.The laying surface 4 of the two plates must have a curvature which corresponds more or less to that of the shell, which causes the drawbacks mentioned in the introduction. To solve this problem, the invention proposes the use of intermediate soles as shown in FIGS. 2a and 2b.
La figure 2a montre un exemple d'une semelle 11 symétrique mince réalisée en acier peu allié et qui présente donc une possibilité de légère déformation ou encore réalisé en fonte ductile du type fonte à graphite sphéroïdal. Cette semelle 11 qui possède la même surface que celle d'une plaque possède deux faces principales courbes 12 et 13, la face tête 12 ayant un rayon de courbure plus grand que celui de la face 13. La semelle 11 possède en son centre un trou 16 pour le passage d'un boulon de fixation.FIG. 2a shows an example of a thin symmetrical flange 11 made of low-alloy steel and which therefore presents a possibility of slight deformation or also made of ductile cast iron of the spheroidal graphite cast iron type. This sole 11 which has the same surface as that of a plate has two main curved faces 12 and 13, the head face 12 having a radius of curvature greater than that of the face 13. The sole 11 has in its center a hole 16 for the passage of a fixing bolt.
La figure 3 montre un exemple d'utilisation de semelles 11 pour la fixation de plaques 10 du genre de celles de la figure 1a sur une virole 30 d'un broyeur. Dans ce cas, la courbure de la face 12 des semelles 11 corresponds plus ou moins à la courbure de la face de pose de la plaque 10 tandis ce que la courbure de la face 13 est adaptée à la courbure de la virole 30. Lors du serrage des plaques 10 sur la virole, la semelle s'adaptera, par déformation, au diamètre et aux irrégularités éventuelles de la virole 30 pour assurer, comme le montre la figure 3, une assise optimale pour chaque plaque de blindage 10. Sans la présence de ces semelles, les plaques 10, qui ont une surface de pose avec un rayon de courbure plus grand que celui de la virole, n'auraient pas d'appui sur la virole dans la région centrale et seraient rapidement vouées à la casse.Figure 3 shows an example of the use of flanges 11 for fixing plates 10 of the kind of those of Figure 1a on a ferrule 30 of a crusher. In this case, the curvature of the face 12 of the flanges 11 corresponds more or less to the curvature of the face for fitting the plate 10 while the curvature of the face 13 is adapted to the curvature of the ferrule 30. During the tightening of the plates 10 on the ferrule, the sole will adapt, by deformation, to the diameter and possible irregularities of the ferrule 30 to ensure, as shown in FIG. 3, an optimal seat for each armor plate 10. Without the presence of these soles, the plates 10, which have a laying surface with a radius of greater curvature than that of the ferrule, would have no support on the ferrule in the central region and would be quickly doomed to breakage.
La semelle 11 de la figure 2 est symétrique et permet uniquement d'accorder les rayons de courbure plaque/virole sans pouvoir modifier le degré de relevage de la plaque 10 quelle supporte. Cette semelle sera donc utilisée lorsque le relevage de la plaque 10 correspond au relevage souhaité pour une bonne efficacité de broyage du broyeur en question.The sole 11 of FIG. 2 is symmetrical and only makes it possible to tune the radii of curvature plate / ferrule without being able to modify the degree of lifting of the plate 10 which it supports. This sole will therefore be used when the lifting of the plate 10 corresponds to the desired lifting for good grinding efficiency of the mill in question.
Pour le cas où le relevage de la plaque de blindage 10 est trop faible ou trop important pour la bonne marche du broyeur, l'invention propose un second type de semelle qui est illustré sur la figure 2b. Cette semelle 14 comporte également deux faces 12 et 15 avec des rayons de courbures différents pour faire la transition entre la courbure de la plaque 10 et celle de la virole 30. Toutefois, ici, les deux faces 12 et 15 font entre-elles un angle α compris en 0,1 et 10 ° de préférence entre 1° et 3°.. Les figures 4a et 4b illustrent deux manières différentes d'utilisation d'une telle semelle 14. Dans la configuration de la figure 4a la semelle 14 relève la hauteur du pied 5 de la plaque 10 diminuant ainsi la différence entre la hauteur h (voir aussi figure 1a) du pied 5 de la plaque 10 et la hauteur H de la tête 6 de la plaque 10, ce qui diminue l'effet de relevage de la charge broyante par le broyeur.For the case where the raising of the armor plate 10 is too low or too important for the proper functioning of the crusher, the invention proposes a second type of sole which is illustrated in FIG. 2b. This sole 14 also has two faces 12 and 15 with different radii of curvature to make the transition between the curvature of the plate 10 and that of the ferrule 30. However, here, the two faces 12 and 15 form an angle between them α included in 0.1 and 10 °, preferably between 1 ° and 3 °. FIGS. 4a and 4b illustrate two different ways of using such a sole 14. In the configuration of FIG. 4a, the sole 14 raises the height of foot 5 of plate 10 thus reducing the difference between the height h (see also Figure 1a) of foot 5 of plate 10 and the height H of head 6 of plate 10, which reduces the lifting effect of the grinding load by the grinder.
Inversement, dans la configuration de la figure 4b, le pied 5 de la plaque reste quasiment au même niveau, tandis que la tête 6 de la plaque 10 est relevée, ce qui augmente la différence entre la hauteur h du pied de la plaque 10 et la hauteur H de la tête de la plaque, et, de ce fait, augmente l'effet de relevage du blindage.Conversely, in the configuration of FIG. 4b, the foot 5 of the plate remains almost at the same level, while the head 6 of the plate 10 is raised, which increases the difference between the height h of the foot of the plate 10 and the height H of the head of the plate, and thereby increases the lifting effect of the shield.
Ainsi, en disposant de plusieurs types de semelles 11 avec différents rayons de courbures de ces faces 12 et 13 on peut équiper des broyeurs de tailles différentes avec le même type de plaques de blindage . En plus, on peut modifier, à sa guise, le degré de relevage non seulement d'un broyeur à l'autre, mais également à l'intérieur de la même chambre d'un broyeur déterminé.Thus, by having several types of sole 11 with different radii of curvature of these faces 12 and 13, it is possible to equip shredders of different sizes with the same type of armor plates. In addition, it is possible to modify, as desired, the degree of lifting not only from one crusher to another, but also inside the same chamber of a given crusher.
Toutefois, comme on va le constater en référence à un exemple concret ci-dessous, en pratique, on n'a pas besoin d'un grand nombre de types de semelles et "on pourra se contenter de quatre voir de deux types de semelles intermédiaires. Pour équiper des broyeurs dont le diamètre se situe entre 2,4 et 5,8 mètres on pourra prévoir un seul type de plaque de blindage avec deux ou quatre types de semelles intermédiaires dont une ou deux symétriques selon la figure 2a et une ou deux selon la figure 2b. Dans le cas de broyeurs d'un diamètre compris entre 2,4 et 3,3 mètres, la virole possède un faible rayon de courbure, ce qui exige une adaptation de la courbure de la face de pose de la plaque à la courbure de la virole lorsque la plaque est prévue pour des broyeurs plus grands. Sans cette adaptation, on risque la casse de la plaque car celle-ci ne repose que sur ses bords longitudinaux. On utilisera donc une semelle 1 1 du type de la figure 2 ayant une face 12 adaptée à la courbure de la face de pose de la plaque et une face 13 avec un rayon de courbure compris entre 1 ,2 mètres et 1 ,6 mètres, de préférence voisin de 1 ,3 m. On pourra également prévoir une semelle 14 du type de la figure 2b pour modifier le degré de relevage, si nécessaire.However, as we will see with reference to a concrete example below, in practice, we do not need a large number of types of soles and " we can be content with four or two types of midsoles To equip shredders with a diameter of between 2.4 and 5.8 meters, only one type of plate can be provided shielding with two or four types of midsoles, one or two of which are symmetrical according to FIG. 2a and one or two according to FIG. 2b. In the case of shredders with a diameter between 2.4 and 3.3 meters, the ferrule has a small radius of curvature, which requires an adaptation of the curvature of the face of laying of the plate to the curvature of the ferrule when the plate is intended for larger grinders. Without this adaptation, there is a risk of the plate breaking because it only rests on its longitudinal edges. A sole 1 1 of the type of FIG. 2 will therefore be used having a face 12 adapted to the curvature of the face for laying the plate and a face 13 with a radius of curvature between 1, 2 meters and 1, 6 meters, preferably around 1, 3 m. We can also provide a sole 14 of the type of Figure 2b to change the degree of lifting, if necessary.
Dans le cas de broyeurs de 3,4 mètres à 5,8 mètres l'adaptation des courbures entre la base des plaques 10 et la virole 30 n'a plus la même acuité en raison de l'importance des rayons de courbure. La face de pose 4 de la plaque de blindage unique 10 a elle-même un rayon de courbure tel qu'il lui permet d'être utilisé avec ou sans semelle dans toute une gamme de grands broyeurs suivant le rayon de courbure choisi pour la face de pose de la plaque 10. Toutefois, l'utilisation d'une semelle intermédiaire est toujours recommandée pour éviter les problèmes en service, soit une semelle du type 1 1 pour éviter la casse et le martelage de la virole 30 par la plaque 10, soit une semelle du type 14 pour faire varier, en outre, l'effet de relevage de l'ensemble du blindage. On utilisera donc, généralement deux semelles également basées sur le même principe que décrit ci-dessus, mais avec un rayon de courbure de la face inférieure 13 ou 15 plus grand et compris entre 1 ,7 mètres et 2,9 mètres, de préférence entre 1 ,8 mètres et 2,2 mètres. En résumé, le système de blindage proposé par l'invention sera applicable à tous les broyeurs compris entre 2,4 mètres et 5,8 mètres, moyennant les cinq pièces suivantes :In the case of shredders from 3.4 meters to 5.8 meters, the adaptation of the curvatures between the base of the plates 10 and the shell 30 no longer has the same acuity due to the importance of the radii of curvature. The laying face 4 of the single armor plate 10 itself has a radius of curvature such that it allows it to be used with or without a soleplate in a whole range of large shredders according to the radius of curvature chosen for the face. fitting the plate 10. However, the use of a midsole is always recommended to avoid problems in service, ie a sole of the type 1 1 to avoid breakage and hammering of the shell 30 by the plate 10, or a sole of type 14 to vary, in addition, the lifting effect of the entire shield. We will therefore generally use two soles also based on the same principle as described above, but with a radius of curvature of the lower face 13 or 15 greater and between 1.7 meters and 2.9 meters, preferably between 1.8 meters and 2.2 meters. In summary, the shielding system proposed by the invention will be applicable to all shredders between 2.4 meters and 5.8 meters, with the following five parts:
- une plaque de blindage unique 10 pour tous les broyeurs ;- a single armor plate 10 for all the shredders;
- une semelle du type 11 symétrique pour les broyeurs d'un diamètre de 2,4 à 3,3 mètres ; - une semelle du type 14 avec un angle d'inclinaison α pour les broyeurs de 2,4 à 3,3 mètres ; - une semelle du type 11 pour les broyeurs d'un diamètre de 3,4 mètres à 5,8 mètres et- a symmetrical type 11 sole for shredders with a diameter of 2.4 to 3.3 meters; - a sole of type 14 with an angle of inclination α for shredders from 2.4 to 3.3 meters; - a sole of type 11 for shredders with a diameter of 3.4 meters to 5.8 meters and
- une semelle du type 14 pour les broyeurs d'un diamètre de 3,4 mètres à 5,8 mètres. La figure 5 illustre la fixation des plaques de blindage et des semelles à la virole 30 d'un broyeur. Cette fixation est assurée par des boulons 22 qui traversent les plaques 10, les semelles 11 ou 14 et la virole 30. L'utilisation de semelles inclinées nécessitera l'utilisation de boulons 22 à têtes semi-sphériques 17 qui sont logés dans un logement correspondant également semi-sphérique 18 de la plaque 10. De cette façon, quel que soit l'angle que fasse la base de la plaque 10 avec la virole 30, on peut serrer correctement le boulon 22 sans créer de flexions dans la tige du boulon 22.- a sole of type 14 for shredders with a diameter of 3.4 meters to 5.8 meters. FIG. 5 illustrates the fixing of the armor plates and of the soles to the shell 30 of a grinder. This fixing is ensured by bolts 22 which pass through the plates 10, the flanges 11 or 14 and the ferrule 30. The use of inclined flanges will require the use of bolts 22 with semi-spherical heads 17 which are housed in a corresponding housing also semi-spherical 18 of the plate 10. In this way, whatever the angle that the base of the plate 10 makes with the ferrule 30, the bolt 22 can be properly tightened without creating bends in the rod of the bolt 22 .
Les blindages boulonnés peuvent présenter l'inconvénient de fuites de matière par les trous des boulons. Pour palier à cet inconvénient, on utilise une rondelle 19 placée entre l'écrou et la virole du broyeur. Cette rondelle comporte un chanfrein 20 destiné à laisser un espace dans lequel on peut loger un joint torique 21 en élastomère qui se comprime lors du serrage du boulon et assure l'étanchéité au niveau du trou de boulon. Bolted shields can have the disadvantage of material leakage through the bolt holes. To overcome this drawback, a washer 19 is used placed between the nut and the shell of the mill. This washer has a chamfer 20 intended to leave a space in which an O-ring 21 made of elastomer can be accommodated which compresses when the bolt is tightened and seals at the bolt hole.

Claims

REVENDICATIONS
1. Système de blindage pour un broyeur rotatif comprenant une virole cylindrique rotative destinée à tourner autour de son axe longitudinal et à contenir de la matière à broyer et une charge d'engins broyants, le système de blindage étant constitué de plaques de blindage individuelles (10) arrangées en anneaux juxtaposés fixées à la paroi intérieure de la virole, chaque plaque de blindage (10) comprenant une face de travail inclinée s'étendant entre un pied de plaque (5) et une tête de plaque (6) et une face de pose bombée opposée tournée vers la surface intérieure de la virole, caractérisée en ce que le système comporte des semelles intermédiaires (11, 14) destinées à être insérées entre les plaques de blindage individuelles (10) et la virole (30) du broyeur, chaque semelle (11 , 14) ayant une face principale dont la courbure est adaptée à la courbure de la face de pose de la plaque de blindage adjacente (10) et une face opposée dont la courbure est adaptée à celle de la virole.1. Shielding system for a rotary crusher comprising a rotary cylindrical shell intended to rotate around its longitudinal axis and to contain material to be ground and a load of crushing machines, the shielding system consisting of individual shielding plates ( 10) arranged in juxtaposed rings fixed to the inner wall of the shell, each shielding plate (10) comprising an inclined working face extending between a plate foot (5) and a plate head (6) and a face of opposite domed laying facing the inner surface of the shell, characterized in that the system comprises intermediate flanges (11, 14) intended to be inserted between the individual armor plates (10) and the shell (30) of the mill, each sole (11, 14) having a main face whose curvature is adapted to the curvature of the laying face of the adjacent armor plate (10) and an opposite face whose curvature is ad suitable for that of the ferrule.
2. Système de blindage selon la revendication 1 , caractérisé par au moins deux types différents de semelles intermédiaires (11 , 14) qui se distinguent par le rayon de courbure de leurs faces principales.2. Shielding system according to claim 1, characterized by at least two different types of midsoles (11, 14) which are distinguished by the radius of curvature of their main faces.
3. Système de blindage selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que les deux faces principales (12, 15) de chaque semelle (14) font entre-elles un angle α inférieur à 10°.3. Shielding system according to any one of claims 1 or 2, characterized in that the two main faces (12, 15) of each sole (14) form between them an angle α less than 10 °.
4. Système selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les plaques (10) sont boulonnées à la virole (30) à l'aide de boulons de fixation (22) traversant chaque plaque (10), chaque semelle (11 , 14) et la virole (30).4. System according to any one of claims 1 to 5, characterized in that the plates (10) are bolted to the shell (30) using fixing bolts (22) passing through each plate (10), each sole (11, 14) and the ferrule (30).
5. Système selon la revendication 4, caractérisé en ce que les boulons de fixation (22) ont des têtes semi-sphériques (17) retenues dans des logements semi-sphériques correspondant (18) de la plaque (10). 5. System according to claim 4, characterized in that the fixing bolts (22) have semi-spherical heads (17) retained in corresponding semi-spherical housings (18) of the plate (10).
PCT/EP2002/010525 2001-10-03 2002-09-19 Wear plate assembly WO2003031070A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE60204710T DE60204710T2 (en) 2001-10-03 2002-09-19 VERSCHLEISSPLATTENVERBAND
AT02767492T ATE297810T1 (en) 2001-10-03 2002-09-19 WEAR PLATE BRACKET
EP02767492A EP1432518B1 (en) 2001-10-03 2002-09-19 Wear plate assembly

Applications Claiming Priority (2)

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BE2001/0642 2001-10-03
BE2001/0642A BE1014412A3 (en) 2001-10-03 2001-10-03 Assembly plates wear.

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WO2003031070A1 true WO2003031070A1 (en) 2003-04-17
WO2003031070B1 WO2003031070B1 (en) 2003-11-20

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AT (1) ATE297810T1 (en)
BE (1) BE1014412A3 (en)
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ES (1) ES2243761T3 (en)
WO (1) WO2003031070A1 (en)

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CN102423725A (en) * 2011-11-14 2012-04-25 沈夕华 Paddle-shaped activation and classification lining plate for tube mill

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CN100417449C (en) * 2006-09-19 2008-09-10 西安建筑科技大学 Manufacturing process for composite abrasion-proof inner plate of ball grinding machine
CN101209431B (en) * 2006-12-29 2011-06-15 中国国际海运集装箱(集团)股份有限公司 Lining board for ball mill barrel
EA200700786A1 (en) * 2007-03-27 2007-10-26 Общество С Ограниченной Ответственностью "Златоустовский Литейный Завод-Метапласт" ARMORED PLATE FOR LIGHTING A DRUM MILL DRUM
EA009144B1 (en) * 2007-03-27 2007-10-26 Общество С Ограниченной Ответственностью "Златоустовский Литейный Завод - Метапласт" Classifying armour plate for lining tubular mill drum
CN107442221B (en) * 2017-08-17 2019-11-08 攀钢集团钒钛资源股份有限公司 Rod mill for the grinding of calcification baking clinker
CN108722574A (en) * 2017-09-27 2018-11-02 北京环磨科技有限公司 A kind of easy through hardening autogenous tumbling mill and semi-autogenous mill liner plate
CN109225483B (en) * 2018-09-30 2023-12-22 中国地质科学院郑州矿产综合利用研究所 Grinding screen system for grinding nonmetallic ore sand production and grinding machine
CN111841777A (en) * 2020-08-24 2020-10-30 攀枝花贝氏体耐磨管道有限公司 Combined wear-resistant lining plate and mill inner cylinder

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DE60204710D1 (en) 2005-07-21
WO2003031070B1 (en) 2003-11-20
ATE297810T1 (en) 2005-07-15
EP1432518B1 (en) 2005-06-15
ES2243761T3 (en) 2005-12-01
DE60204710T2 (en) 2006-02-02
EP1432518A1 (en) 2004-06-30
BE1014412A3 (en) 2003-10-07
CN1564712A (en) 2005-01-12

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