Presses – Methods – With separation from material of liquid expressed
Patent
1989-03-14
1990-09-04
Hornsby, Harvey C.
Presses
Methods
With separation from material of liquid expressed
100 35, 100 39, 100 41, 100 73, 100 90, 100 95, 100127, 100246, 100295, B30B 902, B30B 900, B30B 906
Patent
active
049534572
ABSTRACT:
A method and apparatus for treating biodegradable solid urban waste materials and selecting those non biodegradable components for recycling comprises a tunnel (1) made of steel defining an inner room or ambient of parallelepiped shape, having a rear hinge door (4) associated with adjustable counterbalance weight (5). Near the door (4) blade kneading devices (6) can be installed. In the last portion of the bottom wall of the tunnel (1) holes (7) are arranged, positioned just over a channel (3) connected to a recovering tank (22) of the percolate. At the other front end of the tunnel a moving wall (9) is mounted, capable of being moved to and fro along two rails (10) by means of hydraulic jacks (12). In the center of the wall (9) a hydraulic cylinder (31, 31a, 31b) is anchored, the piston rod (31a) which enters into the iner chamber of the tunnel (1) for compressing the waste mass. Near the upper wall (32) of the tunnel (1), there is a circulating forced air pre-chamber (13) having a grating structure. Parallel to the pre-chamber (13), there are two perforated pipes (33, 33a) into which are periodically conveyed percolation liquids. In the upper wall (32) at least one opening (20), closed by a cover, is arranged for charging waste materials to be treated. On the same wall (32), there are also installed discharge vertical pipes (18) for the discharge of biogases, communicating with the pre-chamber (13).
REFERENCES:
patent: 3355260 (1967-11-01), Bruniche-Olsen
patent: 3604179 (1971-09-01), Lund
patent: 3607391 (1971-09-01), Shann
patent: 4646633 (1987-03-01), Falguieres
Gerrity Stephen F.
Hornsby Harvey C.
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