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US 4,690,339 AGranted
Hammer mill
OwnerRichard Schultzinventor
Life of this patent
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OwnerRichard Schultzinventor
Estimating the term…
The hammer mill comprises a horizontally arranged grinding chamber (1), at the periphery of which several supply ducts (4) with an inlet (7a) for the coarse material to undergo size reduction are distributed, each supply duct (4) being associated with a corresponding adjacent discharge duct (5) with an outlet (7b) for the product of reduced size. The inlets (7a) and the outlets (7b) are alternately arranged and uniformly distributed over the periphery of the grinding chamber and the grinding chamber (1) is thereby subdivided peripherally into a corresponding number of mill segments which are each defined by a supply duct (4) with an inlet (7a) and an associated discharge duct (5) with an outlet (7b). A special feed proportioning apparatus is provided with coaxial cells (21, 22) and several proportioning screws (23) so as to continuously provide the supply ducts (4) of the hammer mill with various coarse materials from corresponding cells (21, 22). The hammer mill and the feed proportioning apparatus are both suitable for various loose materials and size reduction operations and offer particular advantages for the preparation of mixed fodder.
A hammer mill having a grinding chamber, a rotor with hammers or beaters, and means for feeding coarse material and discharging a product of reduced size, said grinding chamber being arranged substantially horizontally, said rotor being supported on a vertical axis, said means for feeding coarse material and discharging a product comprising a plurality of supply ducts with corresponding inlets for feeding said coarse material for size reduction and a plurality of discharge ducts with corresponding outlets for discharging said product of reduced size from said grinding chamber, said supply ducts and discharge ducts being arranged on the periphery of said grinding chamber in such manner that each supply duct with its inlet is associated with a corresponding discharge duct with an adjacent outlet, said outlets each being positioned between two inlets on the periphery of said grinding chamber, whereby said grinding chamber is subdivided peripherally into a corresponding number of mill segments each of which is defined by an inlet and a corresponding outlet.
Dependencies are inferred from the claim text.