Method and apparatus for making food pellets
AssigneeGebrueder Buehler AG
InventorsJorg Ammann, Hans Peter Schaffner, Ernst Ackermann
Life of this patent
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Abstract
For making food pellets, the raw material is first subjected to a first pelleting treatment under pressure, after which the obtained pelleted product is treated at least in part on a pressure pelleter at least for a second time. A feeding arrangement for feeding the material once pelleted to a pelleting die is respectively arranged either within a single pressure pelleter or between two pressure pelleters connected in series for carrying out such process.
Claims24
An an arrangement for making food pellets from a raw material, comprising:
- die means having holes corresponding toe the outer shape of the pellets to be formed by said die means;
- supply means for feeding the raw material into said die means;
- pressure exerting means for pressing said raw material through the holes of said die means to form pellet;
- and
- output means for transporting the pellets fromed by the die means from the same, said output means comprising a feedback arrangement for feeding at least part of said pellets back into said die means to be pelleted again, said feeding arrangement having an inlet end and a discharge end.
In an arrangement for making food pellets from a raw material, comprising:
- first die means having holes corresponding to the outer shape of the pellets to be formed by said first die means;
- supply means for feeding the raw materials into said first die means;
- first pressure exerting means for pressing said raw material through the holes of said first die means to form pellets;
- output means for transporting the pellets formed by the first die means from the same, said output means including first and second output openings;
- second die means having holes corresponding to the outer shape of the pellets to be formed by said second die means;
- input means leading to said second die means;
- second pressure exerting means for pressing material through the holes of said second die means;
- selector means for selectively connecting said input means with said supply means and with said output means, said selector means including shutter means for selectively closing one of the openings in said output means, while giving free the other one of said openings for selectively effecting double-pelleting of the new material.
An apparatus as claimed 16, wherein said supply means comprise first and second supply ends, the first supply end being connected to said first die means, the second suply end being connected to said second die means, and wherein said selector means comprise switching means for said supply means for selectively supplying raw material to said second die means.
In an arrangement for making food pellets from a raw material, comprising:
- first die means having holes corresponding to the other shape of the pellets to be formed by said first die means;
- first pressure exerting means for pressing said raw material with a pressure of a first value through the holes of said first die mean to form pellets;
- supply means for supplying the raw materials to said first die means, said supply means supplying material at a rate of a third valve and including conditioning means for treating the material to reach a conditioning parameter of a fourth value;
- first drive means for imparting relative movement of said first die means and said first pressure means with a relative speed having a second value;
- output means for transporting the pellets formed by the first die means from the same;
- second die means having holes correspondig to the outer shape of the pellets to be formed by said second die means;
- input means leading to said second die means;
- second pressure exerting means for pressing material with a pressure of a fifth value through the holes of said second die means;
- second drive means for imparting relative movement of said second die means and said second pressure means with a relative speech having a sixth value;
- control means for controlling at least one of said values said control means including power measuring means for measuring at least one parameter representative of the power of the drive means assigned to at least of said first and second die and pressure means, said measuring means providing a measuring signal;
- and
- control loop means for evaluating said measuring signal and being at least one control of said values.
Dependencies are inferred from the claim text.