Liquid drain structure for hide processing apparatus |
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| 申请号 | US3659440D | 申请日 | 1971-02-16 | 公开(公告)号 | US3659440A | 公开(公告)日 | 1972-05-02 |
| 申请人 | LEE R LYON; | 发明人 | LYON LEE R; | ||||
| 摘要 | A liquid drain structure is disclosed for apparatus for processing animal hides and comprises an elongated conduit in a spiral within a treatment zone of a rotated inclined drum and a perforated wall defining a lower chamber within the drum for receiving liquid from the conduit and a pump for removing liquid from the lower chamber. | ||||||
| 权利要求 | 1. In apparatus for processing animal hides to be cured, unhaired, converted to leather or otherwise treated and having an elongated imperforate cylindrical walled drum mounted for rotation about an axis inclined from the horizontal, said drum having a closed lower end and an opening at the upper end, and a spiral fin fixed to the wall and extending inwardly therefrom to convey hides downwardly and work the hides in a body of liquids in the drum as the drum is rotated, a liquid drain structure comprising: a. a perforated wall transversely of said drum and secured thereto, said perforated wall being spaced from the lower end and defining a lower chamber therebetween the portion of the drum between the perforated wall and the upper end being a treatment zone; b. means defining a conduit having communication with said lower chamber and extending therefrom in a spiral adjacent the drum wall and terminating above a maximum liquid level in the treatment zone, said conduit having liquid entrance openings along the length thereof thereby communicating the treatment zone with the interior of the conduit; and c. means communicating with said lower chamber and operative at any selected time and during rotation of the drum for removing liquid from the lower chamber whereby liquid in the treatment zone flows into the conduit and to the lower chamber for removal from the drum. 2. A liquid drain structure as set forth in claim 1 wherein said conduit is mounted on the spiral fin and extends substantially the entire length of said fin. 3. A liquid drain structure as set forth in claim 1 wherein said conduit defining means includes: a. a plurality of longitudinally spaced perforations in said spiral fin; b. a wall member extending from said spiral fin and spaced from and substantially parallel with the cylinder wall; and c. a perforated wall member spaced from said spiral fin and having edge portions thereof connected to the cylinder wall and the wall member of said spiral fin to define said conduit. 4. A liquid drain structure as set forth in claim 2 wherein: a. said spiral fin has a plurality of longitudinally spaced perforations therein; b. said spiral fin has a wall member extending therefrom and spaced from and substantially parallel with the cylinder wall; c. said perforations in said spiral fin are positioned between the cylinder wall and the wall member extending from said spiral fin; and d. a perforated wall member is spaced from said spiral fIn and has edge portions thereof connected to the cylinder wall and the wall member on said spiral fin to define said conduit. 5. A liquid drain structure as set fourth in claim 1 wherein said conduit defining means includes: a. a plurality of longitudinally spaced perforations in said spiral fin; b. a wall member extending from said spiral fin and spaced from and substantially parallel with the cylinder wall, said wall member extending from the mixing side of said spiral fin; and c. a perforated wall member spaced from said spiral fin and having edge portions thereof connected to the cylinder wall and the wall member on said spiral fin to define said conduit. 6. A liquid drain structure as set forth in claim 1 wherein said conduit is mounted on a mixing side of the spiral fin and extends substantially the entire length of said fin. 7. A liquid drain structure as set forth in claim 6 wherein: a. said spiral fin has a plurality of longitudinally spaced perforations therein; b. said spiral fin has a wall member extending therefrom and spaced from and substantially parallel with the cylinder wall, said wall member extending from the mixing side of said spiral fin; c. said perforations in said spiral fin are positioned between the cylinder wall and the wall member extending from said spiral fin; and d. a perforated wall member is spaced from the mixing side of said spiral fin and has edge portions thereof connected to the cylinder wall and the wall member on said spiral fin to define said conduit. 8. In apparatus for processing animal hides to be cured, unhaired, converted to leather or otherwise treated and having an elongated imperforate walled drum mounted for rotation about an axis inclined from the horizontal, said drum having a closed lower end and an opening at the upper end, and means fixed to the wall and extending inwardly therefrom to convey hides downwardly and work the hides in a body of liquids in the drum as the drum is rotated, a liquid drain structure comprising: a. a wall means in said drum defining a liquid receiving chamber adjacent to the lower end thereof, the portion of the drum between said wall means and the upper end of the drum being a treatment zone; b. means defining a conduit having communication with said lower liquid receiving chamber and extending therefrom longitudinally and around the treatment zone and terminating adjacent the upper end of the drum above a maximum liquid level in the treatment zone, said conduit having liquid entrance openings along the length thereof communicating the interior of the conduit with the surface level of liquid in the treatment zone at all liquid levels; and c. means communicating with said lower liquid receiving chamber and operative at any selected time for removing liquid from said liquid receiving chamber whereby liquid in the treatment zone flows into the conduit from adjacent the liquid surface and to said liquid receiving chamber for removal from the drum. |
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