Solid material comminution or disintegration – Apparatus – Cooperating comminuting surfaces
Patent
1998-06-16
1999-12-14
Husar, John M.
Solid material comminution or disintegration
Apparatus
Cooperating comminuting surfaces
241261, 241605, B02C 1922
Patent
active
060006498
DESCRIPTION:
BRIEF SUMMARY
The invention concerns the screw feeders for wagons that are particularly suitable for cutting and mixing long-fibre products, such as fodder or grass or straw silage, made up in bales or in their natural state.
The wagons of the known kind are generally made up of a container inside which there are one or more rotary screw feeders that are positioned in the lower part of the container, but can also be positioned in its upper part.
Said wagons of the known kind are particularly suitable for cutting and mixing short-fibre products and have great difficulty cutting long-fibre products such as fodder or grass or straw silage, especially if the quantities involved are considerable.
In fact, during the cutting and mixing of long-fibre products the screw feeders tend to clog up, since the material gets entangled around them and hinders or even stops their rotation.
It is clear that in such conditions the screw feeders absorb much more power than in the optimal cutting conditions, that is, when they are not clogged up.
It is in order to eliminate the drawbacks described above that the the perfected cutter-mixer-feeder wagon object of the Italian patent application N. VI91A/108 corresponding to the International application N. PCT/EP 91/02510 has been carried out; said invention is provided with two rotary screw feeders with opposing spirals, positioned on the bottom of the wagon, and in the area where said spirals converge each of them is equipped with a diaphgram that is orthogonal to the longitudinal axis of the screw feeder itself and consists of two truncated cone-shaped surfaces united in correspondence with their greater base and converging towards the ends of each screw feeder.
The Italian patent application N. VI93A/028 corresponding to the European Patent N. 0612465 presented by the same inventor concerns a screw feeder with opposing spirals that converge on a discoidal element, half of which is formed by a right semispiral and the other half of which by a left semispiral. Each semispiral is provided with a discharge opening to facilitate the unloading of the material.
SUMMARY OF THE INVENTION
The screw feeders carried out according to the patent applications described above considerably improve the cutting and mixing of the product, but they are not the best solution to avoid the clogging of the product to be processed inside the wagon, yet.
Further, they do not ensure a sufficiently regular cutting of the product with constant power absorption.
It is to further improve the performance level in cutting, mixing and feeding the product that the wagon provided with screw feeders with perfected profile has been implemented; the main aim of this invention is to facilitate the mixing of the product that is being cut inside the wagon, in such a way as to obtain an homogeneous product as regards both quality and size.
A further goal is to improve the cutting of the product and to unload the product after it has been processed without leaving any residue inside the wagon.
Another aim is to accomplish a homogeneous rotation of the screw feeders with reduced absorption of power in comparison with the screw feeders mounted on wagons having the same capacity.
The aims described above have been achieved through the implementation of a cutter-mixer-feeder wagon for fodder and grass or straw silage, which, according to the main claim, comprises: material to be processed and with at least one door for the unloading of the processed material; curved section obtained on the bottom of the container itself and parallel to each other, provided with at least one pair of spirals on which peripheral cutters are fixed, one of said spirals being wound clockwise and the other anticlockwise, starting from the ends of the screw feeder and such as to convey the processed material near the unloading door of the wagon; spirals of said screw feeders, said wagon being characterized in that each one of said spirals belonging to each screw feeder is provided, on its end facing the other spiral and limited to the zone in front of said op
REFERENCES:
patent: 4767067 (1988-08-01), Bruer et al.
patent: 4951883 (1990-08-01), Loppoli et al.
patent: 5199638 (1993-04-01), Fischer
patent: 5356054 (1994-10-01), Loppoli et al.
patent: 5395286 (1995-03-01), Sgariboldi
patent: 5433577 (1995-07-01), Roycraft
patent: 5439182 (1995-08-01), Sgariboldi
patent: 5443588 (1995-08-01), Loppoli
patent: 5622323 (1997-04-01), Krueger et al.
patent: 5820043 (1998-10-01), Loppoli
Husar John M.
Seko SPA
LandOfFree
Screw feeders with perfected profile for cutter-mixer-feeder wag does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Screw feeders with perfected profile for cutter-mixer-feeder wag, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screw feeders with perfected profile for cutter-mixer-feeder wag will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-856042