FR2588198A1 - REMOVABLE CRUSHER FOR SMALL GLASS OR RIGID PLASTIC OBJECTS - Google Patents

Abstract

SHREDDER FOR SMALL OBJECTS OF GLASS OR IN RIGID, REMOVABLE AND REMOTELY MANIPULABLE PLASTIC CONTAINING A SENSITIVELY CYLINDRICAL BODY 2 WHOSE SIDE WALL IS PROVIDED WITH AN ENTRY OPENING 10 FOR OBJECTS TO BE SHREDDED AND A LOWER END WITH AN ORIFICE 15 DEBRIS OF CRUSHED OBJECTS, AND A CRUSHING TOOL 32 SUITABLE TO CRUSH THE SAID OBJECTS AND DRAW THE DEBRIS TO ITS OUTPUT PORT 15, THIS TOOL 32 BEING SUBJECT TO AN AXIS 36. AXIS 36 IS SLIGHTLY INCLINED IN RELATION VERTICALLY AND DRIVEN IN ROTATION BY MEANS 44 AND MOUNTED IN A DRAWER 18 DETACHABLE HOUSING IN THE BODY 2. THE MOTOR 44, THE RECEPTACLE 14; THE DRAWER 18 AND THE MILLING TOOL 32 ARE EASILY REMOVED AND REMOTELYABLE.

Description

REMOVABLE SHREDDER FOR SMALL GLASS OBJECTS OR

IN RIGID PLASTIC

  The present invention relates to a crusher

  removable. It applies in particular to the grinding of

  contaminated jets, for example chemical or radioactive glass or plastic containers in an enclosure

c close.

  Storage in drums and reprocessing of objects such as glass or plastic bottles are optimized when they are crushed. The grinding operation becomes delicate when these bottles have

  content of harmful chemical or radioactive substances

  wheat. It is then necessary to operate in a closed enclosure where all the operating maneuvers, from

  cleaning, repairs, ... are carried out remotely

  this. The various mills known to date are generally of the hammer type and with manual operation. The handling is painful and long for the users and the objects are not shredded efficiently with regard to their volume of storage in barrels. In addition, they are difficult to dismantle and

  remote manipulators, especially with regard to replacement

cementing of the grinding tool.

  The invention relates to a shredder for small rigid glass or plastic objects, efficient, reliable and robust, allowing easy disassembly and remote handling of its constituent elements. To this end, it comprises a substantially cylindrical body, the side wall of which is provided with an inlet for the objects to be shredded and the lower end of which is provided with an outlet for debris from the shredded objects, and a grinding tool placed between the inlet and the outlet and subject to an axis, the grinding tool having teeth capable of crushing said objects then entraining the debris of crushed objects towards

  said outlet and the axis being rotated

  tion by drive means.

  Advantageously said axis is mounted in

  a drawer detachably housed in the body.

  Advantageously, said lateral sliding drawer is housed in said body by means of slides formed therein and a removable bar ensures

  keeping the drawer in operating position.

  Conveniently, the axis is slightly inclined relative to the vertical, and the grinding tool is constituted by a stack of cutters having discs angularly offset progressively along said axis and describing a downward spiral with respect to the direction

cutting said grinding tool.

  In any case, the invention will be better understood.

  taken with reference to the following description of a

  example of implementation given by way of nonlimiting illustration, with reference to the appended figures, in which:

  - Figure I shows, in longitudi section-

  nale, the grinder according to the invention; and - Figure 2 shows, in section along La

  line A-A of FIG. 1, the mill according to the invention.

  An example of implementation of the crusher according to the invention is shown in Figure 1. The crusher

  firstly comprises a body 2, the main part of which

  blade is substantially cylindrical. This body 2 is fixed

  on a frame 4 by legs 6 by means of screws 8.

  An inlet 10 is provided on the side wall of said body. This protrudes from said inlet 10 so as to form a

  bottleneck 12 channeling objects to be shredded towards said orifice

fice.

  A receptacle 14 is fixed to the neck 12

to receive said items.

  An outlet orifice 15 is formed in a lower face of the body 2. It allows the evacuation of the crushed objects. An opening 16 (Figure 2) is formed in the side wall of the body 2. It allows the introduction and the exit of a drawer 18 in the body 2. This drawer 18 slides on slides 20 formed in said body

  2 in such a way that, when the drawer 18 is complete-

  lying in the body 2 and in abutment therein,

  this drawer 18 is positioned fixedly (Figures 1 and 2).

  For example, a rectilinear boss 22 is formed on the drawer 18 on the face of the latter which penetrates first

  in body 2, said boss 22 being able to collaborate with

  rer with a rectilinear groove 24 formed in the body 2 opposite the opening 16. When the drawer 18 is

  in abutment in groove 24 and resting on the slides

  res 20, it is fixedly positioned except in the direction

  tion of the entry-exit sliding of the drawer in the

  body. In order to lock this drawer in position, a bar-

  removable rette 26 is rotatably attached to the body 2 on one side of the opening 16 by a screw 27. On the other side of the latter, the bar 26 is able to engage under a tab 28 allowing its holding in front of the opening 16 and thus blocking the drawer 18 in the body 2. It suffices to rotate the bar by an angle sufficient to release the opening 16 and release the drawer. A passage 30 is formed in the drawer 18 so as to come in the extension of the inlet orifice and the neck 12, the outlet orifice 15 then being

  opposite the inlet 10 and below

under said passage 30.

  A grinding tool 32 is disposed in this passage 30. It includes a stack of cutters

  34 subject to a common axis 36. This axis 36 is sup-

  rotated about a geometric axis Slightly inclined relative to the vertical (Figure 1) by two bearings 38, 40 housed in the drawer 18. A pinion 42 is

  fixed on the upper end of said axis 36.

  ment, the disc cutters 34 have offset teeth

  angularly gradually wound along said axis 36 so as to describe a downward spiral with respect to

  in the cutting direction of the grinding tool. This arrangement

  tion allows objects to be ground to be dragged to-

ash down.

  A motor 44, for example pneumatic, is

  fixed on an upper face of the body 2. This motor pos-

  sedates at the end of the shaft a pinion 46 able to pass through a hole in said upper face of the body 2 and to mesh with the pinion 42. When the motor 44 is in

  instead, it rotates the grinding tool 32.

  The crusher according to the invention is arranged for example in a closed enclosure 48 whose frame 4 constitutes the floor. This enclosure 48 includes a

  opening 50 opposite receptacle 14, allowing intro

  duction of the objects to be ground in the crusher; an open

  ture 52 facing the outlet 15 allowing the evacuation

  cuation of crushed objects; and an airlock 54 allowing

  introduction and exit of elements from the mill

  to place. A manipulator arm 56 is for example

  disposed in the enclosure 48 (Figure 2).

  One of the objects of the invention is to propose

  a crusher whose components are easy-

  can be dismantled and manipulated. To this end, the motor 44, the receptacle 14, the drawer 18 and the grinding tool 32 are easily telemanipulabtes. As shown in FIG. 2 as an example, the arm 56, after having rotated the bar 26 (in phantom), withdraws the drawer 18 from the body 2 and can thus remove it from

  enclosure 48 through airlock 54. The same operation, performed

  killed in reverse, allows the reinstatement of the ti-

  roir 18 with a re-sharpened grinding tool. Similarly, the arm 56 can disassemble the

  engine, in the event of a breakdown for example, and replace it.

  Another object of the invention is to provide an efficient grinder. To this end, the inclined axis 36 and the offset of the teeth of the disc cutters 34 cooperate and allow efficient grinding of the objects without phenomenon.

  plug, as well as rapid evacuation.

  Of course, the above description has not been

  given that by way of example, any modifications in the embodiments can be envisaged without

  modify the fundamental principle of the invention.

  One can for example provide a drawer provided with two parallel grinding tools driven by the same

  engine. The shape of the drawer can be adapted to

  care: one or more tools, one or more drive motors.

Claims (4)

  1. Crusher for small glass or rigid plastic objects, characterized in that it comprises a   body (2) substantially cylindrical, the side wall of which   the is provided with an inlet orifice (10) for the objects to be ground and the lower end of which is provided with an outlet orifice (15) for debris of ground objects, and a grinding tool (32) arranged between the inlet orifice (10) and the outlet orifice (15) and subject to an axis (36), the grinding tool (32) having teeth capable of crushing said objects and then entraining debris d objects crushed towards said outlet orifice (15) and the axis (36) being driven in rotation by means (44).   2. Crusher according to claim 1, character-   laughed in that said pin (36) is mounted in a drawer   (18) detachably housed in the body (2).   3. Crusher according to claim 2, character-   laughed in that said drawer (18) is housed in lateral sliding in said body (2) by means of slides (20) formed therein and that a removable bar (26)   keeps the ti- laugh.   4. Crusher according to any one of the claims.   cations 1 to 3, characterized in that the axis (36) is slightly inclined relative to the vertical and in that the grinding tool consists of a stack   disc cutters with angularly offset teeth   progressively along said axis and describing a downward spiral with respect to the cutting direction of said grinding tool.