Sorting device

Patent metadata

Field	Value
Publication number	US-2023194173-A1
Application number	US-201816977982-A
Country	US
Kind code	A1
Filing date	Apr 4, 2018
Priority date	Apr 4, 2018
Publication date	Jun 22, 2023
Grant date	—

Abstract

[OBJECT] To provide a fractionating device capable of stably fractionating powders such as cement raw materials by a simple configuration.
[SOLUTION] 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.

First claim

1 . A fractionating device for fractionating some of a powder falling in a chute, comprising:
a screw conveyor passing through the chute, a part of a casing opening inside the chute, and receiving part of the powder from the opening; and a collision separation member, which is mounted above the screw conveyor in the 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.

2 . The fractionating device as claimed in claim 1 , wherein an end of a discharging port side of the screw conveyor is positioned above another end, and an inclination angle of a rotation shaft of the screw conveyor with respect to a horizontal plane is 5° or more and 20° or less.

3 . The fractionating device as claimed in claim 1 or 2 , further comprising a guide member for guiding the powder falling in the chute in a direction of the opening of the screw conveyor.

4 . The fractionating device as claimed in claim 1 , 2 or 3 , wherein rotation speed of a rotation shaft of the screw conveyor is variable.

5 . The fractionating device as claimed in one of claims 1 to 4 , further comprising a cooling water passage formed in the rotation shaft of the screw conveyor, and means, positioned outside the chute, for feeding a cooling water to the cooling water passage.

Assignees

• Taiheiyo Eng Corporation
• Taiheiyo Cement Corp

Inventors

• Yamamoto Yasushi
• Maeda Yoshiaki
• Yamaguchi Kazuhiko
• Motoyoshi Kunio
• Kimura Takayuki
• KAMADA Kouji
• Izumi Kazushi
• Ueno Naoki

Classifications

• F27B7/3205 Primary

  Charging · CPC title

• F27D3/0033 Primary

  charging of particulate material · CPC title

• F27D3/10

  Charging directly from hoppers or shoots · CPC title

• F27D3/08

  Screw feeders; Screw dischargers · CPC title

• F27B2007/3288

  Sieves or grading means · CPC title