Separating device

{
  "publication_number": "US11627698B2",
  "country": "US",
  "kind": "B2",
  "title": "Separating device",
  "abstract": "A separating device is provided for separating a harvested mixture of root crops and admixtures. The separating device includes at least one conveyor element which circulates in operation at least for supplying the harvested mixture to a separation region, or for discharging the root crops from the separation region in a conveying direction. The separating device includes at least one fluid flow generator and at least one directing device for directing a fluid flow in a fluid flow direction to the separation region. The directing device is at least realized in at least one directing portion by the conveyor element itself.",
  "claims": [
    "1. A separating device for separating a harvested mixture of root crops and admixtures, the separating device comprising: at least one conveyor element for at least one of: supplying the harvested mixture to a separation region; and discharging the root crops from the separation region in a conveying direction; at least one fluid flow generator; and at least one directing device for directing a fluid flow in a fluid flow direction to the separation region; wherein: the directing device is realized in at least one directing portion by the conveyor element itself; the conveyor element is realized as a substantially fluid-impermeable conveyor belt; and the directing portion is realized by a conveyor side of the conveyor belt, and by a portion of the conveyor side which forms an upper boundary to delimits the fluid flow upward in a vertical direction.",
    "2. The separating device according to claim 1, wherein the directing portion extends to the separation region.",
    "3. The separating device according to claim 1, wherein the conveyor belt is realized as a slat conveyor with a plurality of conveyor belt slats which abut against one another in the conveying direction.",
    "4. The separating device according to claim 1, wherein the directing portion has a length of at least 20 cm in the fluid flow direction.",
    "5. The separating device according to claim 1, wherein the directing portion has a width orthogonal to the fluid flow direction of at least 80% of the width of the conveyor element.",
    "6. The separating device according to claim 1, wherein the directing portion comprises at least in part a gradient of no more than 60° relative to a horizontal.",
    "7. The separating device according to claim 1, further including at least one wiper lip which is stationary relative to the fluid flow generator, and which is arranged in a sealing manner on the conveyor element and preferably delimits the directing portion in the fluid flow direction.",
    "8. The separating device according to claim 1, further including at least one sealing lip which seals the directing portion toward a further part of the directing device and is arranged in a stationary manner relative to the fluid flow generator and in a sealing manner on the conveyor element.",
    "9. The separating device according to claim 1, further including at least one guide element which guides a conveyor belt portion which also realizes the directing portion.",
    "10. The separating device according to claim 9, wherein at least one of multiple guide elements is realized as a pressing roller which is arranged at least on the side of the conveyor belt portion remote from the fluid flow.",
    "11. The separating device according to claim 9, wherein at least one of the multiple guide elements is realized as a position roller which is arranged at least on the side of the conveyor belt portion facing the fluid flow.",
    "12. The separating device according to claim 9, wherein at least one of the multiple guide elements is realized as a sliding element which abuts at least against the side of the conveyor belt portion facing the fluid flow and extends in the fluid flow direction.",
    "13. A machine for harvesting or overloading root crops, comprising a receiving device and a separating device according to claim 1."
  ],
  "description_excerpt": "The invention relates to a separating device for separating a harvested mixture of root crops and admixtures. The separating device includes at least one conveyor element which circulates in operation and serves at least for supplying the harvested mixture to a separation region or for discharging the root crops from the separation region. The conveyor element, in this case, conveys in a conveying direction. In addition, the separating device includes at least one fluid flow generator and at least one directing device for directing a fluid flow in a fluid flow direction to the separation region.\n\nBoth the fluid flow and the harvested mixture are directed through the separation region in operation. In this case, root crops and admixtures, such as, for example, sand, weeds or stones, are separated from one another under the influence of the fluid flow. The density of the admixtures which deviates from that of the root crops is utilized for this purpose, as a result of which the fluid flow generates a different force effect on the admixtures than on the root crops. To this end, the fluid flow is directed by the directing device from the fluid flow generator to the separation region in which the fluid flow acts on the harvested mixture.\n\nSuch a separating device for a potato harvesting machine is disclosed, for example, in DE 10 2014 006 842 A1. In this case, the crop is moved by a screening belt into the region of a drop step in which an air flow acts on the crop.",
  "cpc": [
    "A01D 33/08",
    "A01F 12/48",
    "B07B 11/06",
    "B07B 4/08",
    "B65G 15/52",
    "B65G 21/20"
  ],
  "ipc": [
    "A01D 33/08",
    "B07B 11/06",
    "B07B 4/08",
    "B65G 15/52",
    "B65G 21/20"
  ],
  "assignees": [
    "Grimme Landmaschinenfabrik SE and Co KG"
  ],
  "inventors": [
    "Alfons Pöhlking",
    "Franz-Josef Dettmer"
  ],
  "filing_date": "2018-10-26",
  "publication_date": "2023-04-18",
  "grant_date": "2023-04-18",
  "priority_date": "2017-11-01",
  "application_number": "US-201816760927-A",
  "family_id": "64332265",
  "cited_by_count": 0,
  "citations": [
    "DE928017C",
    "DE908808C",
    "US3227276A",
    "US3429438A",
    "US3921809A",
    "US4515276A",
    "DD206884A3",
    "EP0212151A1",
    "US5213219A",
    "US20100000194A1",
    "US20100291980A1",
    "US20150321226A1",
    "CN105123081A"
  ]
}