Flexible helical conveyor for liquids |
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| 申请号 | US3709357D | 申请日 | 1970-05-08 | 公开(公告)号 | US3709357A | 公开(公告)日 | 1973-01-09 |
| 申请人 | BROWN K; | 发明人 | BROWN K; | ||||
| 摘要 | A system for removing light fluid such as oil from heavy fluids such as water comprises an extended length of open screw conveyor constructed of material such that it will float on water. The conveyor may comprise a helical fin having a central bead or core about which stranded cables are wound, the stranded cables may be of steel wire or plastic and when the conveyor is required to float on water plastic materials are employed for all parts of the conveyor. The conveyor is connected to two spaced motor vessels one end being pivotally connected to one of the vessels for free rotation and the other end passing up into the other vessel through a surrounding conduit and being rotated by a motor mounted on the other vessel. A reservoir is provided in the other vessel to collect the liquid. During operation the cable is rotated in a direction to draw the liquid toward the reservoir vessel and the two vessels are moved forward to sweep an area covered with oil or other lighter fluid. In another embodiment the flexible helical drive member is housed in a flexible tubing having a longitudinal opening for admitting the lighter liquid from the surface of the body of heavy liquid, the entire assembly thus formed floats on the body of liquid. | ||||||
| 权利要求 | 1. An elongated rotor for flexible screw-type conveyors and the like comprising an elongated helical strip having a round bead extending along the central axis thereof and constituting a continuous core formed integrally therewith, and a plurality of stranded cables wound about said bead with the same pitch as said helical strip, said cables lying in engagement with one another and said bead and retaining said helical strip securely in its helical configuration. 2. The rotor of claim 1 wherein said cables and said strip are of synthetic plastic material having a specific gravity less than that of water. 3. An elongated rotor for flexible screw-type conveyors comprising a central tension carrying rope, a second rope extending about said tension rope in helical configuration, means for bonding said second rope to said tension rope, said second rope having a hollow tubular center member of flexible fluid-tight material, a terminal fitting, a member rotatable with respect thereto, and means for affording communication for fluid from said relatively rotatable member through said fitting to said center tubular member. 4. An elongated rotor for flexible screw-type conveyors comprising a central tension carrying multiple strand rope, a helical member bonded to said rope for rotation therewith, and means on said helical member spaced from and facing said rope and proViding an axially facing open channel extending from said member about the periphery of said rope. 5. The rotor of claim 3 including at least two helical cables wound in opposite directions about said central rope for gripping said central tension carrying rope tightly when under tension and for facilitating the connection of a driving member to said central rope. 6. The rotor of claim 5 including a rigid fitting mounted about said central rope at the end thereof and having at least one passage for receiving said cables and means for connecting said cables securely to said fitting. 7. The rotor of claim 2 including tubes of synthetic plastic material each closely surrounding a respective one of said cables. |
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