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US 3,979,296 AGranted
Filter
AssigneeAlbert Klein KG
InventorWendell Bastgen
Life of this patent
Estimating the term…
Abstract
A filter consisting of two endless belts of filter material having runs pressed together, of means pressing a run of one belt against the adjacent run of the other, and of a feed device for introducing the slurry between the runs.
Claims27
A filter for removing liquid from a slurry, comprising:
- a. a first endless belt of filter fabric mounted on end rollers so as to form a horizontally-elongated loop having an upper run and a lower run,
- b. a second endless belt of filter fabric mounted on end rollers above the first belt so as to form a horizontally-elongated loop having an upper run and a lower run,
- c. means pressing the lower run of the second belt against the upper run of the first belt,
- d. a feed device situated at the upstream end of and above the upper run of the second belt, the material from the feed device eventually entering the nip between the lower run of the second belt and the upper run of the first belt, which runs are driven in the same direction, and
- e. means underlying the upper run of the second endless belt to hold it substantially flat for conveying and preliminary draining of the newly-introduced slurry.
2 more elements
A filter for removing liquid from a slurry, comprising:
- a. a first endless belt of filter fabric mounted on end rollers so as to form a horizontally-elongated loop having an upper run and a lower run,
- b. a second endless belt of filter fabric mounted on end rollers above the first belt so as to form a horizontally-elongated loop having an upper run and a lower run,
- c. means pressing the lower run of the second belt against the upper run of the first belt,
- d. a feed device situated at the upstream end of and above the upper run of the second belt, the material from the feed device eventually entering between the lower run of the second belt and the upper run of the first belt, which runs are driven in the same direction, and
- e. means associated with the upper run of the second endless belt to hold it substantially flat for conveying and preliminary draining of the newly-introduced slurry, wherein a separate collecting trough is situated below the downstream suction of a path of contact of the belts, and the discharge from that trough is led via a pump to the upper run of the second belt.
2 more elements
A filter for removing liquid from a slurry, comprising:
- a. a first endless belt of the filter fabric forming a loop having a upper run and lower run,
- b. a second belt of filter fabric located above the first belt and forming a loop having an upper run and a lower run,
- c. means pressing the second belt against the first belt to form a pressure zone in which the belts are driven in the same direction,
- d. a feed device situated at the upstream end of and above the upper run of the second belt, the material from the feed device eventually entering a nip between the first and second belts, and passing through the pressure zone, and
- e. means underlying the upper run of the second endless belt to hold it substantially flat for conveying and preliminary draining of the newly-introduced slurry, the material being completely enclosed and carried by the belts all the way from the nip to the said pressure zone.
2 more elements
Dependencies are inferred from the claim text.