Screw feeder for a combination weigher

A screw feeder adapted to be used in relation with a combination weigher, where the combination weigher comprises a dispersion unit, and a plurality of trenches surrounding the dispersion unit, where each of the plurality of trenches comprise an infeed end and a releasing end where each of the trenches have a circular sector like shaped bottom portion, where the dispersion unit is adapted to radially disperse food products into the trenches at their receiving ends, where at each trench the received food product is advanced by said screw feeder towards the releasing end, where said screw feeder is designed such that it has a polygon cross sectional shape having three or more edges;

• wherein at least a part of the screw feeder has a diameter D1 being essentially the same or slightly less than the diameter of the circular sector like shaped bottom portion, said at least part being the part which during use extends from the infeed end towards the releasing of the trenches;
• wherein a remaining part of said screw feeder between said infeed end and said releasing end has a different diameter D2 being less than said diameter D1.

A screw feeder adapted to be used in relation with a combination weigher, where the combination weigher comprises a dispersion unit, and a plurality of trenches surrounding the dispersion unit, where each of the plurality of trenches comprise an infeed end and a releasing end where each of the trenches have a circular sector like shaped bottom portion, where the dispersion unit is adapted to radially disperse food products into the trenches at their receiving ends, where at each trench the received food product is advanced by said screw feeder towards the releasing end, where said screw feeder is designed such that it has a polygon cross sectional shape having three or more edges;

• wherein the screw feeder comprises a cylindrical shaped mounting end having an opening therein for engaging with a drive unit for driving the screw feeder, wherein a cylindrical boundary portion having a larger diameter than said cylindrical shaped mounting end is provided between said cylindrical shaped mounting end and the remaining part of the screw feeder, and where said cylindrical boundary portion comprises at least one askew slit extending there through and oriented in essentially the same way as the screw feeder.

A screw feeder adapted to be used in relation with a combination weigher, where the combination weigher comprises a dispersion unit, and a plurality of trenches surrounding the dispersion unit, where each of the plurality of trenches comprise an infeed end and a releasing end where each of the trenches have a circular sector like shaped bottom portion, where the dispersion unit is adapted to radially disperse food products into the trenches at their receiving ends, where at each trench the received food product is advanced by said screw feeder towards the releasing end, where said screw feeder is designed such that it has a polygon cross sectional shape having three or more edges;

• wherein the screw feeder comprises a cylindrical shaped mounting end having an opening therein for engaging with a drive unit via a bolt extending from an opposite end of the mounting end with a free engaging end facing the opening, wherein the opening comprises a first cavity extending from the opening followed by at least one second cavity, where the first and at least one second cavities are designed in relation to the drive unit so as to allow the drive unit to be received in the opening and where the at least one second cavity is configured to remain the drive unit in propped position while fastening or unfastening the screw feeder to the drive unit via said bolt.