EP0657219A1 - Shredder for industrial waste - Google Patents

Shredder for industrial waste Download PDF

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Publication number
EP0657219A1
EP0657219A1 EP94402822A EP94402822A EP0657219A1 EP 0657219 A1 EP0657219 A1 EP 0657219A1 EP 94402822 A EP94402822 A EP 94402822A EP 94402822 A EP94402822 A EP 94402822A EP 0657219 A1 EP0657219 A1 EP 0657219A1
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EP
European Patent Office
Prior art keywords
box
rib
shredder
shredder according
knives
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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.)
Withdrawn
Application number
EP94402822A
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German (de)
French (fr)
Inventor
Pierre Garralon
Jean Garralon
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Individual
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Individual
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Publication date
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Publication of EP0657219A1 publication Critical patent/EP0657219A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers

Definitions

  • the subject of the invention is a shredder for industrial waste essentially consisting of a cutting and shearing tooth shaft associated with a receiving trough of particular profile.
  • Known shredders intended to grind and reduce industrial waste generally consist of two disc-carrying trees or knives which rotate by crossing so as to chop and cut the waste deposited on these trees.
  • the teeth of neighboring knives must be as close as possible to each other and therefore distributed in large numbers on each tree. This therefore involves powerful drive geared motors, and the assembly is obviously of a high cost price.
  • the Applicants have developed a shredder with a single shaft, simple to make and to implement and therefore inexpensive, and which moreover gives d 'excellent results in that it ensures a breakage of the product before shearing which makes it particularly suitable for the treatment of plastics.
  • a main object of the invention therefore consists of a shredder for industrial waste using rotary cutting members distributed on a drive shaft mounted in a waste collection box, shredder according to which the cutting members are profiled knives carried by teeth mounted on a single fluted shaft, which pass through slots provided in the box, the bottom of said box having a particular profile defining pyramid-shaped cells with downward pointing tip, in which said slots are hollowed.
  • the bottom consists of a sheet of section in W shape, the central central part of which forms a rib which covers the splined shaft, and baffles having the appearance of caps, attached between said rib and the inclined walls of the bottom of the box.
  • each deflector extend transversely on either side of the central rib and are at the same level.
  • Figure 1 a cross-sectional view of the shredder.
  • Figure 2 a view along II-II of Figure 1.
  • Figure 3 a top view of the shredder.
  • the shredder illustrated in the figures has the general shape of a rectangular box 1 open at the top, which is crossed by a single fluted horizontal shaft 2 carrying profiled teeth 3.
  • each tooth is ends with two profiled knives 4 symmetrical with respect to the shaft, the face of which faces in their direction of rotation forms a rounded 5.
  • the travel of the tooth with double knives is materialized by the circle 6.
  • the bottom 7 of the box 1 has a very particular profile also visible in FIG. 3.
  • the bottom 7 consists of a sheet of W-shaped section, the central central part of which forms a rib 9 which covers the splined shaft 2 and the two inclined side walls 10 of which rise up to the longitudinal edges.
  • deflectors 11 in the form of a pyramid or cap, the upper edge 12 of which extends transversely to the channels, at the same level as that of the central rib 9.
  • a each end of the channels are brought back triangular plates 13 inclined towards the transverse edges of the box, and up to a height also equivalent to that of the rib.
  • the bottom 7 of the box with these deflectors 11 and the plates 13 define cells 14 of pyramidal shape, the tip of which is oriented downwards.
  • the bottom walls 7 at the center of each pair of cells 14, on either side of the middle rib 9, are hollowed out with a slot 15 for the passage of the teeth 3. It can be seen in FIG. 1 that the slot extends on the side walls 10 only up to a height corresponding to the travel 6 of the knife. Under the bottom 7 thus described are reported vertical profiled walls 16 which support and strengthen it.
  • the products to be shredded are therefore placed in said box and are positioned on the bottom 7, essentially resting on the upper edges 12 of the deflectors 11 as well as on the central rib 9 at the same level.
  • the knives 4 will break the waste before shearing it. This is done during the impact of the rounding 5 on the product before the knives penetrate the slot 15.
  • FIG. 1 It can be seen in FIG. 1 that the teeth 4 penetrate inside the upper end of the slot located substantially at the meeting point of the vertical walls 16 and the inclined wall 10. This area is thus stiffened by this junction and can withstand the local stresses due to the shearing of the products between the edges of the slot and the teeth.
  • the edges in question can also be provided with steel reinforcements for this purpose.
  • the rounded profile 5 of the teeth promotes the cutting of waste along the edges.
  • the teeth 3 being fixed on a splined shaft can be oriented parallel to each other or, on the contrary, angularly offset.
  • the assembly is easy and the choice is dictated by the nature of the products to be treated. It is also possible to replace the teeth with two branches as described by teeth with several branches.
  • the shredder according to the invention can be used alone or be superimposed on at least one granulation drum. In this case it constitutes the upper stage of a complete mill.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

The rotary cutting members are shaped knives (4) borne by teeth (3) mounted on a single splined shaft (2), which knives pass through slots provided in the bottom (7) of the casing, the said bottom having a W-shaped profile, the middle central part of which forms a rib (9) which covers the said splined shaft, deflectors (11) being attached between the said rib and the inclined walls (10) of the bottom of the casing, which together with the said walls define cells of pyramidal shape with the vertex pointing downwards. Application to industrial waste shredders. <IMAGE>

Description

L'invention a pour objet un déchiqueteur pour déchets industriels essentiellement constitué d'un arbre à dents de coupage et de cisaillage associé à une auge de réception de profil particulier.The subject of the invention is a shredder for industrial waste essentially consisting of a cutting and shearing tooth shaft associated with a receiving trough of particular profile.

Les déchiqueteurs connus destinés à broyer et réduire les déchets industriels sont généralement constitués de deux arbres porteurs de disques ou de couteaux qui tournent en se croisant de manière à hacher et couper les déchets déposés sur ces arbres. Pour être efficaces, les dents des couteaux voisins doivent être aussi proches que possible les unes des autres et donc réparties en grand nombre sur chaque arbre. Cela implique donc de puissants motoréducteurs d'entraînement, et l'ensemble est évidemment d'un prix de revient élevé.Known shredders intended to grind and reduce industrial waste generally consist of two disc-carrying trees or knives which rotate by crossing so as to chop and cut the waste deposited on these trees. To be effective, the teeth of neighboring knives must be as close as possible to each other and therefore distributed in large numbers on each tree. This therefore involves powerful drive geared motors, and the assembly is obviously of a high cost price.

Dans un but de simplification, sans pour autant nuire à la qualité du déchiquetage obtenu, les Demandeurs ont mis au point un déquicheteur à un seul arbre, simple à réaliser et à mettre en oeuvre et par conséquent peu coûteux, et qui de surcroît donne d'excellents résultats en ce qu'il assure un cassage du produit avant son cisaillage ce qui le rend particulièrement approprié pour le traitement des matières plastiques.For the sake of simplification, without compromising the quality of the shredding obtained, the Applicants have developed a shredder with a single shaft, simple to make and to implement and therefore inexpensive, and which moreover gives d 'excellent results in that it ensures a breakage of the product before shearing which makes it particularly suitable for the treatment of plastics.

Un objet principal de l'invention consiste donc en un déchiqueteur pour déchets industriels utilisant des organes rotatifs de coupe répartis sur un arbre d'entraînement monté dans un caisson de recueil des déchets, déchiqueteur selon lequel les organes de coupe sont des couteaux profilés portés par des dents montées sur un arbre cannelé unique, qui traversent des fentes prévues dans le caisson, le fond dudit caisson ayant un profil particulier définissant des alvéoles de forme pyramidale à pointe orientée vers le bas, dans lesquelles sont creusées lesdites fentes.A main object of the invention therefore consists of a shredder for industrial waste using rotary cutting members distributed on a drive shaft mounted in a waste collection box, shredder according to which the cutting members are profiled knives carried by teeth mounted on a single fluted shaft, which pass through slots provided in the box, the bottom of said box having a particular profile defining pyramid-shaped cells with downward pointing tip, in which said slots are hollowed.

Selon une caractéristique particulière de l'invention, le fond est constitué d'une tôle de section en forme de W dont la partie centrale médiane forme une nervure qui coiffe l'arbre cannelé, et de déflecteurs ayant l'allure de chapeaux, rapportés entre ladite nervure et les parois inclinées du fond du caisson.According to a particular characteristic of the invention, the bottom consists of a sheet of section in W shape, the central central part of which forms a rib which covers the splined shaft, and baffles having the appearance of caps, attached between said rib and the inclined walls of the bottom of the box.

Avantageusement, les arêtes supérieures de chaque déflecteur s'étendent transversalement de part et d'autre de la nervure centrale et se trouvent au même niveau.Advantageously, the upper edges of each deflector extend transversely on either side of the central rib and are at the same level.

D'autres caractéristiques particulières et avantages de l'invention ressortiront de la description qui va suivre d'un exemple non limitatif de réalisation dans lequel il est fait référence aux dessins annexés qui représentent.Other particular characteristics and advantages of the invention will emerge from the description which follows of a nonlimiting exemplary embodiment in which reference is made to the appended drawings which represent.

Figure 1 une vue en coupe transversale du déchiqueteur.Figure 1 a cross-sectional view of the shredder.

Figure 2 une vue selon II-II de la figure 1.Figure 2 a view along II-II of Figure 1.

Figure 3 une vue de dessus du déchiqueteur.Figure 3 a top view of the shredder.

Le déchiqueteur illustré sur les figures a la forme générale d'un caisson rectangulaire 1 ouvert à la partie supérieure, qui est traversé par un unique arbre horizontal cannelé 2 portant des dents profilées 3. On voit plus précisément à la figure 1 que chaque dent se termine par deux couteaux profilés 4 symétriques par rapport à l'arbre dont la face orientée dans leur sens de rotation forme un arrondi 5. Le débattement de la dent à double couteaux est matérialisé par le cercle 6. Le fond 7 du caisson 1 a un profil très particulier visible aussi à la figure 3. Ainsi, d'un bord longitudinal 8 à l'autre bord longitudinal opposé du caisson, le fond 7 est constitué d'une tôle de section en forme de W dont la partie centrale médiane forme une nervure 9 qui coiffe l'arbre cannelé 2 et dont les deux parois latérales inclinées 10 remontent jusqu'aux bords longitudinaux. Dans les deux rigoles ménagées entre ladite nervure 9 et les parois 10 sont rapportés des déflecteurs 11 en forme de pyramide ou de chapeau dont l'arête supérieure 12 s'étend transversalement aux rigoles, au même niveau que celui de la nervure centrale 9. A chaque extrémité des rigoles sont rapportées des plaquettes triangulaires 13 inclinées en direction des bords transversaux du caisson, et jusqu'à une hauteur également équivalente à celle de la nervure.The shredder illustrated in the figures has the general shape of a rectangular box 1 open at the top, which is crossed by a single fluted horizontal shaft 2 carrying profiled teeth 3. We can see more precisely in Figure 1 that each tooth is ends with two profiled knives 4 symmetrical with respect to the shaft, the face of which faces in their direction of rotation forms a rounded 5. The travel of the tooth with double knives is materialized by the circle 6. The bottom 7 of the box 1 has a very particular profile also visible in FIG. 3. Thus, from one longitudinal edge 8 to the other opposite longitudinal edge of the box, the bottom 7 consists of a sheet of W-shaped section, the central central part of which forms a rib 9 which covers the splined shaft 2 and the two inclined side walls 10 of which rise up to the longitudinal edges. In the two channels formed between said rib 9 and the walls 10 are deflectors 11 in the form of a pyramid or cap, the upper edge 12 of which extends transversely to the channels, at the same level as that of the central rib 9. A each end of the channels are brought back triangular plates 13 inclined towards the transverse edges of the box, and up to a height also equivalent to that of the rib.

Le fond 7 du caisson avec ces déflecteurs 11 et les plaquettes 13 définissent des alvéoles 14 de forme pyramidale dont la pointe est orientée vers le bas. Les parois du fond 7 au centre de chaque paire d'alvéoles 14, de part et d'autre de la nervure médiane 9, sont creusées d'une fente 15 pour le passage des dents 3. On voit à la figure 1 que la fente ne s'étend sur les parois latérales 10 que jusqu'à une hauteur correspondant au débattement 6 du couteau. Sous le fond 7 ainsi décrit sont rapportées des parois verticales profilées 16 qui le supportent et le renforcent.The bottom 7 of the box with these deflectors 11 and the plates 13 define cells 14 of pyramidal shape, the tip of which is oriented downwards. The bottom walls 7 at the center of each pair of cells 14, on either side of the middle rib 9, are hollowed out with a slot 15 for the passage of the teeth 3. It can be seen in FIG. 1 that the slot extends on the side walls 10 only up to a height corresponding to the travel 6 of the knife. Under the bottom 7 thus described are reported vertical profiled walls 16 which support and strengthen it.

Les produits à déchiqueter sont donc placés dans ledit caisson et se positionnent sur le fond 7, essentiellement en appui sur les arêtes supérieures 12 des déflecteurs 11 ainsi que sur la nervure centrale 9 au même niveau. Lors de la rotation des dents 3 entraînées par l'arbre 2, les couteaux 4 vont casser les déchets avant de les cisailler. Cela s'effectue lors de l'impact de l'arrondi 5 sur le produit avant la pénétration des couteaux dans la fente 15. On voit à la figure 1 que les dents 4 pénètrent à l'intérieur de l'extrémité supérieure de la fente située sensiblement au point de rencontre des parois verticales 16 et de la paroi inclinée 10. Cette zone est ainsi rigidifiée par cette jonction et peut supporter les contraintes locales dues au cisaillage des produits entre les bords de la fente et les dents. Les bords en question peuvent à cet effet être également pourvus de renforts en acier. Le profil arrondi 5 des dents favorise la coupe des déchets le long des rebords.The products to be shredded are therefore placed in said box and are positioned on the bottom 7, essentially resting on the upper edges 12 of the deflectors 11 as well as on the central rib 9 at the same level. During the rotation of the teeth 3 driven by the shaft 2, the knives 4 will break the waste before shearing it. This is done during the impact of the rounding 5 on the product before the knives penetrate the slot 15. It can be seen in FIG. 1 that the teeth 4 penetrate inside the upper end of the slot located substantially at the meeting point of the vertical walls 16 and the inclined wall 10. This area is thus stiffened by this junction and can withstand the local stresses due to the shearing of the products between the edges of the slot and the teeth. The edges in question can also be provided with steel reinforcements for this purpose. The rounded profile 5 of the teeth promotes the cutting of waste along the edges.

Les dents 3 étant fixées sur un arbre cannelé peuvent être orientées parallèlement les unes par rapport aux autres ou au contraire décalées angulairement. Le montage en est aisé et le choix est dicté par la nature des produits à traiter. On peut aussi remplacer les dents à deux branches telles que décrites par des dents à plusieurs branches.The teeth 3 being fixed on a splined shaft can be oriented parallel to each other or, on the contrary, angularly offset. The assembly is easy and the choice is dictated by the nature of the products to be treated. It is also possible to replace the teeth with two branches as described by teeth with several branches.

Le déchiqueteur selon l'invention peut être utilisé seul ou être superposé à au moins un tambour de granulation. Dans ce cas il constitue l'étage supérieur d'un broyeur complet.The shredder according to the invention can be used alone or be superimposed on at least one granulation drum. In this case it constitutes the upper stage of a complete mill.

Claims (6)

1.- Déchiqueteur pour déchets industriels utilisant des organes rotatifs de coupe répartis sur un arbre d'entraînement monté dans un caisson de recueil des déchets, caractérisé en ce que les organes de coupe sont des couteaux profilés (4) portés par des dents (3) montées sur un arbre cannelé unique (2), qui traversent des fentes (15) prévues dans le caisson (1) et en ce que le fond (7) dudit caisson a un profil particulier définissant des alvéoles (14) de forme pyramidale à pointe orientée vers le bas, dans lesquelles sont creusées lesdites fentes. 1.- Shredder for industrial waste using rotary cutting members distributed on a drive shaft mounted in a waste collection box, characterized in that the cutting members are profiled knives (4) carried by teeth (3 ) mounted on a single fluted shaft (2), which pass through slots (15) provided in the box (1) and in that the bottom (7) of said box has a particular profile defining cells (14) of pyramidal shape. tip pointing downwards, in which said slots are hollowed out. 2.- Déchiqueteur selon la revendication 1, caractérisé en ce que le fond (7) est constitué d'une tôle de section en forme de W dont la partie centrale médiane forme une nervure (9) qui coiffe l'arbre cannelé (2), et de déflecteurs (11) ayant l'allure de chapeaux, rapportés entre ladite nervure et les parois inclinées (10) du fond du caisson. 2. A shredder according to claim 1, characterized in that the bottom (7) consists of a sheet of W-shaped section whose central central part forms a rib (9) which covers the splined shaft (2) , and deflectors (11) having the appearance of caps, added between said rib and the inclined walls (10) of the bottom of the box. 3.- Déchiqueteur selon la revendication 2, caractérisé en ce que les arêtes supérieures (12) de chaque déflecteur (11) s'étendent transversalement de part et d'autre de la nervure centrale (9) et se trouvent au même niveau. 3.- A shredder according to claim 2, characterized in that the upper edges (12) of each deflector (11) extend transversely on either side of the central rib (9) and are at the same level. 4.- Déchiqueteur selon les revendications 2 et 3, caractérisé en ce que des plaquettes triangulaires (13) inclinées sont rapportées entre les bords transversaux du caisson jusqu'à une hauteur équivalente à celle de la nervure (9). 4.- A shredder according to claims 2 and 3, characterized in that triangular plates (13) inclined are reported between the transverse edges of the box up to a height equivalent to that of the rib (9). 5.- Déchiqueteur selon la revendication 1, caractérisé en ce que sous le fond (7) du caisson sont rapportées des parois verticales profilées (16) qui le supportent et le renforcent. 5. A shredder according to claim 1, characterized in that under the bottom (7) of the box are reported vertical profiled walls (16) which support and strengthen it. 6.- Déchiqueteur selon la revendication 1, caractérisé en ce que la face des couteaux (4), orientée dans leur sens de rotation, forme un arrondi (5). 6.- A shredder according to claim 1, characterized in that the face of the knives (4), oriented in their direction of rotation, forms a rounded (5).
EP94402822A 1993-12-09 1994-12-08 Shredder for industrial waste Withdrawn EP0657219A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9314776 1993-12-09
FR9314776A FR2713515B1 (en) 1993-12-09 1993-12-09 Industrial waste shredder.

Publications (1)

Publication Number Publication Date
EP0657219A1 true EP0657219A1 (en) 1995-06-14

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EP94402822A Withdrawn EP0657219A1 (en) 1993-12-09 1994-12-08 Shredder for industrial waste

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FR (1) FR2713515B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2335617A (en) * 1998-03-27 1999-09-29 Michael Robertson Animal carcass recycling-unit
EP1498185A1 (en) * 2003-07-07 2005-01-19 ATI Properties, Inc. Comminution apparatus
EP1625889A1 (en) * 2004-08-10 2006-02-15 Balemaster Europe B.V. Device and method for comminution and use thereof
CN107552183A (en) * 2017-08-01 2018-01-09 南昌浩牛科技有限公司 It is a kind of to smash equipment to smashing the clean Chinese medicine of equipment collection

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8628239U1 (en) * 1986-10-23 1986-12-04 Schmitz, Wolfgang, 4056 Schwalmtal Device for shredding empty plastic containers, especially oil cans
EP0523690A1 (en) * 1991-07-17 1993-01-20 Shoji Nakagomi Double shaft breaker
FR2691079A1 (en) * 1992-05-12 1993-11-19 Garallon Pierre Compact refuse grinder - has shaft carrying shredding wheels at bottom of first hopper and second hopper housing grinding drum with granulating teeth

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8628239U1 (en) * 1986-10-23 1986-12-04 Schmitz, Wolfgang, 4056 Schwalmtal Device for shredding empty plastic containers, especially oil cans
EP0523690A1 (en) * 1991-07-17 1993-01-20 Shoji Nakagomi Double shaft breaker
FR2691079A1 (en) * 1992-05-12 1993-11-19 Garallon Pierre Compact refuse grinder - has shaft carrying shredding wheels at bottom of first hopper and second hopper housing grinding drum with granulating teeth

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2335617A (en) * 1998-03-27 1999-09-29 Michael Robertson Animal carcass recycling-unit
GB2335617B (en) * 1998-03-27 2000-07-19 Michael Robertson Animal carcass recycling-unit
EP1498185A1 (en) * 2003-07-07 2005-01-19 ATI Properties, Inc. Comminution apparatus
EP1625889A1 (en) * 2004-08-10 2006-02-15 Balemaster Europe B.V. Device and method for comminution and use thereof
CN107552183A (en) * 2017-08-01 2018-01-09 南昌浩牛科技有限公司 It is a kind of to smash equipment to smashing the clean Chinese medicine of equipment collection

Also Published As

Publication number Publication date
FR2713515B1 (en) 1996-02-16
FR2713515A1 (en) 1995-06-16

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