Apparatus for treating hide and leather pieces in tanneries |
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| 申请号 | US3762190D | 申请日 | 1971-07-19 | 公开(公告)号 | US3762190A | 公开(公告)日 | 1973-10-02 |
| 申请人 | STAUB & CO AG; | 发明人 | RUFFER H; KEMPIN W; KRAUS A; | ||||
| 摘要 | An apparatus for continuously treating hide, leather and pieces of similar material by subjecting the pieces to be treated to exposure to a liquid treating agent selected to effect at least one of a tanning, post-tanning, oiling, fat-liquoring, surface dyeing, through dyeing and impregnating treatment in which pieces to be treated are successively fed to and through a liquid treating agent containing a treatment zone while the movement of the pieces through the zone is so guided that all surfaces of the pieces are exposed to umimpeded contact with the liquid treating agent and just prior to leaving the treatment zone, the leading ends of the successive pieces are grasped by and fed through cooperating pressing rollers to squeeze out excess liquid therefrom as they are leaving the treatment zone. The pieces leaving one treatment zone can be fed to and through a succeeding treatment zone containing the same or a different liquid treating agent and the intensity of the treating action can be increased by heating and/or subjecting the liquid within the zone to ultrasonic excitation or vibration. | ||||||
| 权利要求 | 1. Apparatus for treating hide, leather and pieces of similar material by subjecting the pieces to be treated to exposure to a liquid treating agent selected to effect at least one of a tanning, post-tanning, oiling, fat-liquoring, surface dyeing, through dyeing and impregnating treatment comprising means defining a liquid containing vat having an inlet side for the introduction of pieces to be treated and an outlet side for the discharging of treated pieces, conveyor means terminating at the inlet side above the liquid level for feeding successive pieces into said vat, cooperating pressing roller means at said outlet side for squeezing excess liquid from said pieces, means within said vat for continuously unimpedingly moving the pieces being treated through the vat below the liquid level therein from the inlet to the outlet side in an immersed floating condition in said liquid treating agent, said means being constructed and arranged as to allow unimpeded access of the treating liquid to substantially all sides of the pieces being treated and means for maintaining said pieces being treated in a floating condition by preventing the rise of said pieces to the liquid surface while said pieces are being moved from the vat inlet to outlet. 2. Apparatus for treating hide, leather and pieces of similar material by subjecting the pieces to be treated to exposure to a liquid treating agent selected to effect at least one of a tanning, post-tanning, oiling, fat-liquoring, surface dyeing, through dyeing and impregnating treatment comprising means defining a liquid containing vat having an inlet side for the introduction of pieces to be treated and an outlet side for the discharge of treated pieces, conveyor means terminating at the inlet side above the liquid level for feeding successive pieces into said vat, cooperating pressing roller means at said outlet side for squeezing excess liquid from said pieces, said pressing roller means being positioned with its longitudinal axis in an inclined plane, means within tHe vat for guiding and continuously unimpedingly moving the pieces to be treated below the liquid level substantially linearly and without appreciable deflection within the vat from the inlet side to said pressing roller means in an immersed floating condition in said liquid treating agent, said means being constructed and arranged as to allow unimpeded access of the treating liquid to substantially all sides of the pieces being treated and means for maintaining said pieces being treated in floating condition while preventing the rise of said pieces to the liquid surface while said pieces are being moved from said vat inlet to outlet. 3. Apparatus as claimed in claim 2 and said guiding and moving means comprising foraminous endless conveyor means including at least two cooperating, facing runs within the vat and below the liquid level therein and between which said pieces are moved. 4. Apparatus as claimed in claim 2 and said guiding and moving means comprising endless conveyor means including at least two cooperating facing runs below the liquid level within the vat and having projections thereon and between which runs said pieces being treated are moved. 5. Apparatus as claimed in claim 2 and said guiding and moving means comprising roller means arranged in upper and lower series of parallel rollers displaced below the liquid level within the vat, and between which upper and lower series of rollers, said pieces being treated are moved. 6. Apparatus as claimed in claim 5 and circular rings mounted on the circumference of said rollers and said rings extending at outward inclinations from the center-line of the direction of movement of said rollers. 7. Apparatus as claimed in claim 5 and spiral band means mounted of the circumference of said rollers and said bands having opposite pitch on opposite sides of the center of the length of said rollers. 8. Apparatus as claimed in claim 5 and helical band means mounted of the circumference of said rollers and said bands having opposite pitch on opposite sides of the center of the length of said rollers. 9. Apparatus as claimed in claim 6 and the periphery of said rings being interrupted to define piece engaging projections. 10. Apparatus as claimed in claim 5 and projections extending outwardly of the periphery of said rollers. 11. Apparatus as claimed in claim 10 and said projections being arranged in two generally helical formations of opposite pitch on opposite sides of the centers of the length of said rollers. 12. Apparatus as claimed in claim 2 and said guiding and moving means comprising conveyor means including at least two facing cooperating runs within said vat below the liquid level therein and between which said pieces are moved, means for driving one of said runs, said other run engaging the pieces being moved and moving therewith. 13. Apparatus as claimed in claim 2 and said guiding and moving means comprising conveyor means including at least two facing cooperating runs within said vat below the liquid level therein and between which said pieces are moved and drive means for driving both said runs. 14. Apparatus as claimed in claim 13 and said drive means being a continuous drive means. 15. Apparatus as claimed in claim 13 and said drive means being an infinitely variable drive means. 16. Apparatus as claimed in claim 5 and a continous drive means for said rollers. 17. Apparatus as claimed in claim 5 and an infinitely variable drive means for said rollers. 18. Apparatus as claimed in claim 2 and the gap between said cooperating pressing roller means being located slightly above the level of liquid within said vat. 19. Apparatus as claimed in claim 2 and the common plane passing through the axes of said pressing roller means being inclined forwardly in the direction of movement of said pieces. 20. Apparatus as claimed in claim 2 and a temperature controllable heating means constructed and arranged as a displacement body disposed within said vat. 21. ApparaTus as claimed in claim 2 and at least one of said pressing roller means having an elastic surface. 22. Apparatus as claimed in claim 2 and means for regulating the pressure applied by said pressing roller means. 23. Apparatus as claimed in claim 22 and said means for regulating the pressure applied by said pressing roller means being fluid operated. 24. Apparatus as claimed in claim 22 and said means for regulating the pressure applied by said pressing roller means including weights. 25. Apparatus as claimed in claim 22 and said means for regulating the pressure applied by said pressing roller means including springs. 26. Apparatus as claimed in claim 2 and stripping means operatively associated with said pressing roller means at the outlet side thereof for ensuring removal of said pieces. 27. Apparatus as claimed in claim 2 and said vat having an inlet for liquid treating agent and an overflow outlet. 28. Apparatus as claimed in claim 2 and a volatile vapor drawoff means operatively associated with said vat and a volatile recovery unit communicating with said drawoff means. 29. Apparatus as claimed in claim 2 wherein said means for maintaining said pieces in a floating condition comprises roller means at least partially removed from said treating liquid. 30. Apparatus as claimed in claim 29 wherein said means for maintaining said pieces in a floating condition comprises an endless belt carried by said roller means. 31. Apparatus as claimed in claim 29 wherein said roller means includes a plurality of aligned parallel rolls. 32. Apparatus as claimed in claim 1 wherein said conveyor means for feeding pieces into said vat is externally positioned adjacent said vat and terminating at the inlet side above the liquid level in said vat whereby said pieces enter said vat liquid by gravity. |
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