FR2783181A1 - Vegetable crusher used in agriculture, has supply hopper having ejector comprising paddles which rotate in vertical casing - Google Patents

Abstract

The crusher comprises a casing (1) with a rotor (2) rotating inside it and hammers (3) provided in its periphery. A supply hopper (6) made in the casing side comprises an ejector (8) rotating in a plane tangent to the rotor. The ejector comprises paddles or radial arms (8a) which rotate in a vertical casing (9) provided with an upwards directed outlet opening (10).

Description

The invention relates to a plant shredder of the type comprising a rotor.

equipped with tools such as

fixed or pendulum hammers.

  In known manner, this type of equipment comprises a casing inside which a grinding rotor turns, this

  casing being fitted laterally with a feed hopper

tion of the materials to be ground.

  The output of the comminuted material is generally made through an opening provided in the casing opposite the hopper, the particles being projected by the rotor through this opening or driven pneumatically by means of air circulation in the casing created by the rotor itself or by an independent blower. We realized, however, that, given the quality of the

  crushed material (fresh branches, foliage, etc.) which incorporates

  pore a certain amount of water,

  blockages and jams that interfere with proper functioning

  grinder. The invention intends to solve this problem.

  To this end, the subject of the invention is a plant shredder comprising a casing, a rotor rotating in this casing and provided with hammers at its periphery, a feed hopper for the shredder in the casing lateral to the rotor, and a rotating ejector in a plane substantially

  tangent to the extreme trajectory of the rotor hammers.

  The materials which are entrained by the rotor and which tend to agglomerate around it are detached

  by blades, teeth or other arms which rotate tangently

  directly to the rotation of the rotor. The action of these teeth on the product is of several orders. First it prints a speed to the product allowing it to be extracted from the rotational field of the rotor and to orient it in the direction of a discharge nozzle. Then, these teeth have an additional cutting and chopping action on the product. Finally, such a mechanical recovery of the product makes it possible to dispense with installing a blower which is

  generating significant aerodynamic noise.

  Other features and advantages stand out

  from the description of an embodiment of the invention

  tion given below by way of nonlimiting example.

  Reference will be made to the accompanying drawings, in which: - Figure 1 is a general view of a grinder according to the invention, - Figure 2 is a simplified end view of

these measures.

  In these figures, we will have presented a plant crusher which comprises inside a casing 1, a rotor 2 provided at its periphery with hammers 3, these hammers being able to be fixed or pendular. The rotor 2 drive means which is supported by bearings have not been shown, here schematically represented in supports 4 and 5. On the face located in the foreground of FIG. 1, the casing 1 has a opening 6 forming a lateral feed hopper of the crusher through which is brought either manually or automatically, the material to be ground, for example

branches 7.

  Opposite the hopper 6, the crusher comprises a rotary ejector member 8, for example with blades 8a, housed in a casing 9 whose internal volume is of course connected to the internal volume of the casing 1, the plane of

  rotation of the blades being substantially tangent to the rotor 2.

  The casing 9 of this ejector ends with an opening 10 which forms a shredding extraction channel, this opening 10 here shown oriented vertically, can be extended by a chute or nozzle for discharging and orienting the shred in the direction of a high point likely to overhang a collection trailer, for example. The blades 8a or arm of the ejector scan the external surface of the rotor by mechanically detaching from the latter all the particles which could have been agglomerated or clogged therein, these particles being ejected in the direction of the opening 10 due to the kinetic energy they receive from the blades of the ejector. At the same time, a complementary chopping of the product takes place. The drive of the ejector 8 is ensured by a transmission device which comprises a pulley ll wedged in rotation with the rotor 2, a pulley 12 wedged in rotation on a shaft 13 parallel to the axis of the rotor 2, and leading to an angle gearbox 14 outside the casing from which a shaft 15 for driving the blades or arms (or knives) 8a originates. A belt or chain 16 connects the pulleys 11 and 12 to an axial end of the casing, this transmission itself being housed in the

cover 17.

  The rotations of the rotor and the ejector being respectively indicated by the arrows A and B in FIG. 1, the path of the particles inside the grinder

  is symbolized by the dotted tablecloth 18.

Claims (3)

  1. Crusher of plants comprising a casing (1), a rotor (2) rotating in this casing and provided with hammers (3) at its periphery, a hopper (6) for feeding the crusher formed in the casing laterally to the rotor ( 2), characterized in that it comprises a rotating ejector (8)   in a plane substantially tangent to the rotor (2).   2. Crusher according to claim 1, characterized in that the ejector (8) comprises blades or radial arms (8a) rotating in a housing (9) substantially vertical and   provided with an outlet opening (10) directed upwards.   3. Crusher according to claim 1 or the resale   dication 2, characterized in that the plane of rotation of the ejector (8) is substantially diametrically opposed by   ratio of the rotor (2) to that of the feed hopper (6) tion.