Press worm, especially for filter presses
AssigneeFried. Krupp Gesellschaft mit beschrankter Haftung
InventorsManfred Knuth, Thorsten Homann
Life of this patent
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Abstract
A pressing worm or screw, especially for filter presses of the type used to press liquids from solids, e.g. oils from eatable-oil-bearing seeds, is formed with an outwardly opened groove along its flight or thread which is filled with a harder metal than the flight by deposit welding.
Claims6
A pressing worm, especially for a filter press, comprising a worm body formed with a generally helical flight, said flight being provided along its length with an outwardly open groove defined between walls unitary with the body, and a weldment deposited in said groove and completely filling same flush with the outer periphery of the flight and continuously along the length of the worm, the weldment being composed of a material harder than that of the worm body.
A method of making a worm for a filter press, comprising forming a worm body with an outwardly projecting helical flight, providing between walls unitary with said body an outwardly open groove continuously along said flight and to a depth equal to the height of said flight, depositing a body of weldment in said groove flush with the outer surfaces of said flight to completely fill said groove continuously along the length thereof, said weldment being of a material harder than that of the worm body.
A filter press for the pressing of eatable-oil seeds comprising a cylinder, a worm rotatable in said cylinder and formed with a body having a unitary helical flight, said flight having an outwardly open groove defined between walls unitary with the body extending continuously along the worm, and a weldment completely filling said groove flush with the outer periphery of said flight, said weldment being composed of a harder material than that of the worm.
Dependencies are inferred from the claim text.