Sorting device

Patent metadata

Field	Value
Publication number	US-12145895-B2
Application number	US-201816977982-A
Country	US
Kind code	B2
Filing date	Apr 4, 2018
Priority date	Apr 4, 2018
Publication date	Nov 19, 2024
Grant date	Nov 19, 2024

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.

First claim

The invention claimed is:

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.

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

Classifications

• C04B7/436

  Special arrangements for treating part or all of the cement kiln dust · CPC title

• C04B7/438

  Evacuating at least part of the heat treated material before the final burning or melting step, the evacuated material being used as a cement as such · CPC title

• B65G33/24

  Details · CPC title

• B65G33/08

  for fluent solid materials · CPC title

• B65G11/206

  for bulk · CPC title