FR2474352A1 - SCRIBING GRID FOR GRANULATOR GRINDER - Google Patents

SCRIBING GRID FOR GRANULATOR GRINDER Download PDF

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Publication number
FR2474352A1
FR2474352A1 FR8101854A FR8101854A FR2474352A1 FR 2474352 A1 FR2474352 A1 FR 2474352A1 FR 8101854 A FR8101854 A FR 8101854A FR 8101854 A FR8101854 A FR 8101854A FR 2474352 A1 FR2474352 A1 FR 2474352A1
Authority
FR
France
Prior art keywords
plate
grid
granulator
shirts
grinder
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.)
Granted
Application number
FR8101854A
Other languages
French (fr)
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FR2474352B1 (en
Inventor
Flavio Previero
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.)
PREVIERO Sas
Original Assignee
PREVIERO Sas
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 PREVIERO Sas filed Critical PREVIERO Sas
Publication of FR2474352A1 publication Critical patent/FR2474352A1/en
Application granted granted Critical
Publication of FR2474352B1 publication Critical patent/FR2474352B1/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/469Perforated sheet-like material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26Details
    • B02C13/282Shape or inner surface of mill-housings
    • B02C13/284Built-in screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/148Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers specially adapted for disintegrating plastics, e.g. cinematographic films
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16Details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/16Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
    • B02C2023/165Screen denying egress of oversize material

Abstract

DANS CHAQUE TROU 2 DE LA PLAQUE COURBE 1 DU STATOR DU BROYEUR EST EMMANCHEE UNE CHEMISE INTERCHANGEABLE 3 DE DURETE SUPERIEURE A CELLE DE LA PLAQUE. ON OBTIENT DE CETTE FACON UNE PLUS GRANDE RESISTANCE AUX SOLLICITATIONS ET UNE PLUS FAIBLE USURE. LORSQU'ELLES SONT USEES, LES CHEMISES 3 PEUVENT ETRE REMPLACEES PAR DES CHEMISES NEUVES SANS QU'IL SOIT NECESSAIRE DE REMPLACER L'ENSEMBLE DE LA GRILLE.IN EACH HOLE 2 OF THE CURVED PLATE 1 OF THE STATOR OF THE CRUSHER IS FITTED AN INTERCHANGEABLE SHIRT 3 OF GREATER HARDNESS THAN THAT OF THE PLATE. IN THIS WAY GREATER RESISTANCE TO STRESSES AND LESS WEAR ARE OBTAINED. WHEN THEY ARE WORN, THE SHIRTS 3 CAN BE REPLACED BY NEW SHIRTS WITHOUT THE NECESSARY TO REPLACE THE ENTIRE GRID.

Description

La présente invention concerne une grille cri-The present invention relates to a Cree grid.

blante pour broyeur-granvlateur.grantee for grinder-granvlator.

Il est connu qu'un broyeur granulateur est une machine capable de réduire aux dimensions delpetits grains ou granulés des morceaux de matières de tous types et de toutes formes. Il comprend généralement un rotor à axe It is known that a granulator mill is a machine capable of reducing to the dimensions of small grains or granules pieces of material of all types and all shapes. It generally includes an axis rotor

horizontal qu'on fait tourner à l'intérieur de la cavi-  horizontal that is rotated inside the cavi-

té d'un stator qui communique à sa partie supérieure  tee of a stator which communicates to its upper part

avec une trémie d'alimentatio-n et est fermé dans sa ré- with a feed hopper and is closed in its re-

gion inférieure par une grille criblante de forme cour-  lower gion by a screening grid of short form

be. Le rotor est muni de lames radiales qui coopèrent pendant la rotation avec des contre-lames fixes qui font  be. The rotor is provided with radial blades which cooperate during rotation with fixed counterblades which make

partie du stator pour découper et fragmenter progressi- part of the stator to cut and fragment progressively

vement la matière jusqu'à ce qu'elle soit réduite aux dimensions de grains capables de passer à travers les trous de la grille criblante et d'atteindre de cette  the material until it is reduced to the size of grains capable of passing through the holes of the screening screen and reaching this

façon un espace collecteur sous-jacent. like an underlying collector space.

Un problème que posent les broyeurs granula-  A problem with granulators

teurs actuels est représenté par l'usure de la grille criblante, laquelle subit de fortes sollicitations et de fortes déformations consécutives à ces sollicitations, notamment lorsque, ainsi que cela se produit fréquemment, un grain possédant certes des dimensions transversales  Current tors is represented by the wear of the screening screen, which undergoes strong stresses and strong deformations consecutive to these stresses, in particular when, as it frequently happens, a grain certainly having transverse dimensions

réduites mais une longueur encore excessive, s'est en-  reduced but still excessive length, became

gagé dans un trou de la grille et,alors qu'il est ainsi engagé, est attaqué par une lame du rotor et fortement sollicité à la déchirure contre la paroi du trou. Cet inconvénient, que l'on observe en particulier dans le  gage in a hole of the grid and, while it is thus engaged, is attacked by a blade of the rotor and strongly subjected to tearing against the wall of the hole. This drawback, which is observed in particular in the

cas de produits à base de caoutchouc, entra ne la néces-  rubber products, does not require

site de remplacements périodiques de la grille, et des  site for periodic replacements of the grid, and

frais correspondants.corresponding costs.

Le but de l'invention est de réaliser une gril-  The object of the invention is to produce a grill

le criblante pour broyeur granulateur qui ne subisse qu'une usure plus faible et qui, en tous cas, donne lieu  the screen for granulator mill which undergoes less wear and which, in any case, gives rise

à des frais d'entretien plus réduits.  at lower maintenance costs.

Suivant l'invention, ce but est atteint au moyen d'une grille criblante comprenant une plaque percée de trous, caractérisée par le fait que, dans chacun de ces trous est emmanchée une chemise interchangeable de  According to the invention, this object is achieved by means of a screening grid comprising a plate pierced with holes, characterized in that, in each of these holes is fitted an interchangeable jacket of

dureté supérieure à celle de la plaque.  hardness greater than that of the plate.

L'utilisation de chemises d'une dureté supé-  The use of shirts of higher hardness

rieure permet évidemment d'obtenir une plus grande ré-  obviously makes it possible to obtain a greater

sistance aux sollicitations et, par conséquent, une  resistance to stresses and, consequently, a

plus faible usure et une plus grande longévité. En ou-  lower wear and longer service life. In or-

tre, lorsque les chemises se sont usées, il n'est plus  tre, when the shirts have worn out, it is no longer

nécessaire de remplacer l'ensemble de la grille mais uni-  necessary to replace the whole grid but uni-

quement les chemises. Il en résulte évidemment un coet  only shirts. This obviously results in a cost

d'entretien très réduit.very low maintenance.

Chaque chemise est de préférence munie d'un tranchant intérieur à son extrémité qui est dirigée vers le rotor en position d'utilisation. Ce tranchant  Each liner is preferably provided with an inner cutting edge at its end which is directed towards the rotor in the position of use. This sharp

a pour fonction de faciliter la rupture par coupeplu-  has the function of facilitating breakage by

t8t que par déchirure, des grains déjà partiellement engagés clans les trous de la grille et, du fait de sa dureté, il s'use très lentement, en garantissant ainsi au produit une qualité optimale pendant longtemps. Etant donné qu'on fait toujours tourner le rotor dans le m9me  t8t that by tearing, grains already partially engaged in the holes of the grid and, because of its hardness, it wears very slowly, thus guaranteeing the product an optimal quality for a long time. Since we always rotate the rotor in the same

sens et que, par conséquent c'est toujours la m9me moi- meaning and therefore it's always the same me-

tié du tranchant qui travaille et s'use, il est égale-  third of the cutting edge that works and wears out, it is also

ment possible de doubler la durée du tranchant et, par conséquent, celle de la chemise, en retournant cette It is possible to double the length of the cutting edge and therefore that of the shirt, by turning this

chemise de 1800 au moment voulu. L'autre moitié du tran- shirt from 1800 when needed. The other half of the tran-

chant, parfaitement intacte, est alors prête pour le travail.  song, perfectly intact, is then ready for work.

D'autres caractéristiques et avantages de l'in-  Other features and advantages of the

vention seront mieux compris à la lecture de la descrip-  vention will be better understood on reading the description

tion qui va suivre d'un exemple de réalisation et en se référant aux dessins annexés sur lesquels, la figure 1 est une vue de dessus, développée dans un plan, d'une grille criblante suivant l'invention démunie de ses chemises; la figure 2 représente la grille équipée de chemises, en coupe suivant la ligne II-II de la figure 1 et avec la courbure prévue pour le fonctionnement;  tion which will follow from an exemplary embodiment and with reference to the accompanying drawings in which, Figure 1 is a top view, developed in a plan, of a screen grid according to the invention stripped of its shirts; Figure 2 shows the grid fitted with liners, in section along line II-II of Figure 1 and with the curvature provided for operation;

la figure 3 représente une partie de la gril- Figure 3 shows part of the grill.

le de la figure 2, par une vue de dessus, la figure 4 représente la même partie de la  the of Figure 2, from a top view, Figure 4 shows the same part of the

grille mais vue de dessous.grid but view from below.

La grille criblante représentée sur les des-  The screening grid shown on the

sins comprend une plaque métallique 1 percée de trous circulaires répartis 2, la grille étant représentée développée dans un plan sur la figure 1 tandis que, en  sins comprises a metal plate 1 pierced with distributed circular holes 2, the grid being shown developed in a plane in FIG. 1 while, in

réalité elle-est destinée à être utilisée dans un broy- reality it is intended to be used in a shredder

eur granulateur sous sa forme courbe représnntée sur  eur granulator in its curved form represented on

la figure 2.Figure 2.

Dans chacun des trous est emmanchée une che-  In each of the holes is fitted a sleeve

mise interchangeable 3 qui est retenue en position par son bord terminal retourné 4 et par une bague d'arrêt , ce bord et cette bague coopérant respectivement avec  interchangeable setting 3 which is retained in position by its inverted end edge 4 and by a stop ring, this edge and this ring cooperating respectively with

les faces opposées de la plaque 1. La matière constitu-  the opposite sides of the plate 1. The material

tive des chemises est choisie de manière à garantir à  tive shirts is chosen so as to guarantee

ces chemises une dureté, et par conséquent une résis-  these shirts a hardness, and therefore a resistance

tance aux sollicitations, très supérieures à celles  tance to the demands, much higher than those

de la plaque 1.from plate 1.

Comme on peut le voir sur la figure 2, l'ex-  As can be seen in Figure 2, the former

trémité de chaque chemise 3 qui est dirigée vers le cen- end of each shirt 3 which is directed towards the center

tre de courbure de la plaque 1 et vers le rotor du broy-  curvature of the plate 1 and towards the grinder rotor

eur granulateur en position de fonctionnement, est munie  eur granulator in operating position, is provided

d'un tranchant intérieur circulaire 6 qui a pour fonc-  of a circular inner cutting edge 6 which has the function of

tion de faciliter aux lames du rotor la coupe des grains  to facilitate the cutting of the grains by the rotor blades

de longueur excessive qui peuvent déjà ttre partielle-  excessive length which may already be partial-

ment engagés clans la lumière axiale des chemises 3.  engaged in the axial lumen of the shirts 3.

Pour remplacer chaque chemise 3 et également pour faire tourner chaque chemise de 1800 lorsque la première moitié du tranchant 6 est usée, il suffit de  To replace each liner 3 and also to rotate each liner of 1800 when the first half of the cutting edge 6 is worn, it suffices to

retirer temporairement la bague d'arret 5 correspondante.  temporarily remove the corresponding stop ring 5.

Bien entendu, diverses modifications pourront %tre apportées au dispositif qui vient d'ttre décrit uniquement à titre d'exemple non limitatif sans pour  Of course, various modifications could be made to the device which has just been described solely by way of nonlimiting example without for

cela sortir du cadre de l'invention.  this is outside the scope of the invention.

Claims (1)

R E V E N D I C A T I O N S I - Grille criblante pour broyeur granulateur comprenant une plaque percée de trous, caractérisée en ce que, dans chacun des trous (2) est emmanchée une chemise interchangeable (3) de dureté supérieure à cel- le de la plaque (1). 2 - Grille criblante suivant la revendicationR E V E N D I C A T I O N S I - Screening grid for granulator mill comprising a plate pierced with holes, characterized in that, in each of the holes (2) is fitted an interchangeable jacket (3) with a hardness greater than that of the plate (1). 2 - Screening grid according to claim 1, caractérisée en ce qu'une extrémité de ladite chemi-  1, characterized in that one end of said chemi- so (3) est munie d'un tranchant (6) dirigé vers l'in-  n / a (3) is provided with a cutting edge (6) directed towards the térieur. 3 - Grille criblante suivant la revendication  térieur. 3 - Screening grid according to claim 1, caractérisée en ce que ladite chemise (3) est rete-  1, characterized in that said jacket (3) is rete- nue de façon démontable à l'intérieur dudit trou (2) par un bord terminal retourné vers l'extérieur et par une bague d'arrêt (5), ce bord et cette bague coopérant  bare, removable inside said hole (2) by an end edge turned outwards and by a stop ring (5), this edge and this ring cooperating respectivement avec les deux faces opposées de la pla- respectively with the two opposite sides of the plate que (1).that (1).
FR8101854A 1980-01-30 1981-01-30 SCRIBING GRID FOR GRANULATOR GRINDER Expired FR2474352B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2062880U IT8020628V0 (en) 1980-01-30 1980-01-30 SELECTOR GRID FOR GRANULATOR MILL.

Publications (2)

Publication Number Publication Date
FR2474352A1 true FR2474352A1 (en) 1981-07-31
FR2474352B1 FR2474352B1 (en) 1985-09-13

Family

ID=11169756

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8101854A Expired FR2474352B1 (en) 1980-01-30 1981-01-30 SCRIBING GRID FOR GRANULATOR GRINDER

Country Status (8)

Country Link
JP (1) JPS615954Y2 (en)
AT (1) AT378131B (en)
BE (1) BE887288A (en)
DE (1) DE3100097A1 (en)
ES (1) ES255240Y (en)
FR (1) FR2474352B1 (en)
GB (1) GB2068260B (en)
IT (1) IT8020628V0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564755A1 (en) * 1984-05-22 1985-11-29 Morando Spa Off Clay cleaning drum

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19609347A1 (en) * 1996-03-11 1997-09-18 Albert Hoffmann Gmbh Device for shredding sheet metal and. material
ES2154149B1 (en) * 1998-05-27 2001-12-01 Serveis De Produccio Empresari IMPROVEMENTS IN FIBER BOARD FLOOR TRANSPORTER SYSTEMS.
CN102814210A (en) * 2012-08-23 2012-12-12 何一标 Sieve plate of hammerhead crusher
CN108421609B (en) * 2018-05-18 2023-09-12 贵州杉海沿环保科技有限责任公司 Garbage crushing treatment device for garbage landfill
CN110433923A (en) * 2019-08-13 2019-11-12 湖北力帝机床股份有限公司 Nonferrous metal crusher lattice structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB226888A (en) * 1923-10-03 1925-01-05 Jeffrey Mfg Co Improvements in pulverizing, shredding and like machines
GB729938A (en) * 1952-09-03 1955-05-11 Samuel Royston Griffin Improvements in and relating to screen plates more particularly for the treatment ofmetallic ores
FR1351665A (en) * 1963-02-07 1964-02-07 Ferdinand Mohr Hole screen
FR2249718A1 (en) * 1973-11-05 1975-05-30 Randtron
DE2532379A1 (en) * 1975-07-19 1977-02-10 Schade Maschf Gustav Coated sieve plate - has cladding of hard wearing material round perforations

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB226888A (en) * 1923-10-03 1925-01-05 Jeffrey Mfg Co Improvements in pulverizing, shredding and like machines
GB729938A (en) * 1952-09-03 1955-05-11 Samuel Royston Griffin Improvements in and relating to screen plates more particularly for the treatment ofmetallic ores
FR1351665A (en) * 1963-02-07 1964-02-07 Ferdinand Mohr Hole screen
FR2249718A1 (en) * 1973-11-05 1975-05-30 Randtron
DE2532379A1 (en) * 1975-07-19 1977-02-10 Schade Maschf Gustav Coated sieve plate - has cladding of hard wearing material round perforations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564755A1 (en) * 1984-05-22 1985-11-29 Morando Spa Off Clay cleaning drum

Also Published As

Publication number Publication date
FR2474352B1 (en) 1985-09-13
JPS615954Y2 (en) 1986-02-22
DE3100097A1 (en) 1981-11-26
JPS56159141U (en) 1981-11-27
ATA6381A (en) 1984-11-15
AT378131B (en) 1985-06-25
ES255240U (en) 1981-03-16
BE887288A (en) 1981-05-14
IT8020628V0 (en) 1980-01-30
GB2068260B (en) 1983-05-25
ES255240Y (en) 1981-10-01
GB2068260A (en) 1981-08-12

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