Sorting device

{
  "publication_number": "US12145895B2",
  "country": "US",
  "kind": "B2",
  "title": "Sorting device",
  "abstract": "To provide a fractionating device capable of stably fractionating powders such as cement raw materials by a simple configuration. A fractionating device 1 for fractionating some of a powder (cement raw material) R falling in a chute (main body) 2, wherein the fractionating device is equipped with a screw conveyor 5 which passes through the chute, a part of a casing 5 a opening inside the chute, and receives part of the powder from an opening (inlet) 5 b, and a collision separation member (collision separation rod) 4 which is provided above the screw conveyor in the chute and collides with an object when an object of a predetermined size or larger falls, and prevents the object from falling directly onto the screw conveyor. A rotation shaft 5 d of the screw conveyor may be inclined from 5° to 20° with respect to the horizontal plane so that the end of the discharge port side of the screw conveyor is positioned above the other end and may be equipped with a guide member 3 that guides the powder falling in the chute in the direction of the opening of the screw conveyor.",
  "claims": [
    "1. A fractionating device for fractionating some of a powder falling in a first chute into a second chute, comprising: a screw conveyor passing through the first chute and being configured to extend to the second chute, a part of a casing opening inside the first chute, and receiving part of the powder from the opening, the screw conveyor having a discharging port side, an end of which is positioned above another end of the screw conveyor, and an inclination angle of a rotation shaft of the screw conveyor with respect to a horizontal plane is between 5° and 20°; a guide member for guiding the powder falling in the first chute in a direction of the opening of the screw conveyor; and a collision separation member, which is mounted above the screw conveyor in the first chute, for colliding with an object when an object of a predetermined size or larger falls, and preventing the object from falling directly onto the screw conveyor, wherein rotation speed of a rotation shaft of the screw conveyor is variable.",
    "2. The fractionating device as claimed in claim 1, further comprising a cooling water passage formed in the rotation shaft of the screw conveyor, and means, positioned outside the first chute, for feeding a cooling water to the cooling water passage.",
    "3. The fractionating device as claimed in claim 1, wherein the collision separation member extends transversely to a longitudinal direction of the first chute.",
    "4. The fractionating device as claimed in claim 1, wherein the collision separation member includes a plurality of separation rods arranged in an apex configuration.",
    "5. The fractionating device as claimed in claim 1, wherein the guide member comprises a guide board positioned above the screw conveyor in the first chute, the guide board configured to be moveable relative to the first chute.",
    "6. A fractionating device for fractionating some of a powder falling in a first chute into a second chute, comprising: a screw conveyor passing through the first chute and being configured to extend to the second chute, a part of a casing opening inside the first chute, and receiving part of the powder from the opening, the screw conveyor having a discharging port side, an end of which is positioned above another end of the screw conveyor, and an inclination angle of a rotation shaft of the screw conveyor with respect to a horizontal plane is between 5° and 20°, a cooling water passage formed in the rotation shaft of the screw conveyor, and means, positioned outside the first chute, for feeding a cooling water to the cooling water passage; and a collision separation member, which is mounted above the screw conveyor in the first chute, for colliding with an object when an object of a predetermined size or larger falls, and preventing the object from falling directly onto the screw conveyor, wherein rotation speed of a rotation shaft of the screw conveyor is variable.",
    "7. The fractionating device as claimed in claim 6, wherein the collision separation member extends transversely to a longitudinal direction of the first chute.",
    "8. The fractionating device as claimed in claim 6, wherein the collision separation member includes a plurality of separation rods arranged in an apex configuration.",
    "9. The fractionating device as claimed in claim 6, further comprising a guide board positioned above the screw conveyor in the first chute, the guide board configured to be moveable relative to the first chute."
  ],
  "description_excerpt": "1. Technical Field of the Invention The present invention relates to a fractionating device for fractionating powders such as cement raw materials that are discharged from preheater cyclones of a cement burning apparatus. 2. Description of the Related Art A cement burning apparatus is provided with a preheater, a calciner, a cement kiln and a clinker cooler, and a cement raw material fed to the preheater is preheated through preheater cyclones arranged in stages; calcined in the calciner; and burned in the cement kiln to generate cement clinker. Then, the cement clinker is cooled in the clinker cooler, and is sent to a cement grinding process. In the above preheater cyclones, a cement raw material is preheated while gradually moves from upper cyclones to lower cyclones. A part of the cement material is sometimes fractionated from an outlet chute of a cyclone to prevent coating on cement manufacturing facility (refer to Patent Document 1), or to recover mercury in a cement kiln exhaust gas (refer to Patent Document 2).\n\nPatent Document 1: Japanese Patent publication No. 2004-168605 gazette Patent Document 2: Japanese Patent publication No. 2014-58699 gazette\n\nA part of the cement raw material falling in the outlet chute of the preheater cyclone sometimes becomes a large block due to aggregation, in such a case, the fractionating device may be damaged, or the large block cannot be received, which may prevent desired fractionating.",
  "cpc": [
    "C04B 7/365",
    "B65G 11/206",
    "B65G 33/08",
    "B65G 33/24",
    "C04B 7/436",
    "C04B 7/438",
    "C04B 7/44",
    "F27B 2007/3288",
    "F27B 7/3205",
    "F27D 3/0033",
    "F27D 3/08",
    "F27D 3/10"
  ],
  "ipc": [
    "B65G 11/20",
    "B65G 33/08",
    "B65G 33/24",
    "C04B 7/36",
    "C04B 7/43",
    "F27B 7/32",
    "F27D 3/00",
    "F27D 3/08",
    "F27D 3/10"
  ],
  "assignees": [
    "TAIHEIYO ENG CORPORATION",
    "TAIHEIYO CEMENT CORP",
    "TAIHEIYO ENG CORPORATION TAIHEIYO CEMENT CORPORATION"
  ],
  "inventors": [
    "YAMAMOTO YASUSHI",
    "MAEDA YOSHIAKI",
    "YAMAGUCHI KAZUHIKO",
    "MOTOYOSHI KUNIO",
    "KIMURA TAKAYUKI",
    "KAMADA Kouji",
    "IZUMI KAZUSHI",
    "UENO NAOKI"
  ],
  "filing_date": "2018-04-04",
  "publication_date": "2024-11-19",
  "grant_date": "2024-11-19",
  "priority_date": "2018-04-04",
  "application_number": "US-201816977982-A",
  "family_id": "65073911",
  "citations": [
    "DE102015112599A1",
    "JP2004168605A",
    "JP2014058699A",
    "KR20110116926A",
    "KR20140030415A",
    "KR20150012916A",
    "US2018340745A1",
    "US2463693A",
    "US3862594A",
    "US4256453A",
    "US4850515A"
  ]
}