Refining device

Patent metadata

Field	Value
Publication number	US-12533679-B2
Application number	US-202318353931-A
Country	US
Kind code	B2
Filing date	Jul 18, 2023
Priority date	Jul 20, 2022
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

There is provided a refining device in which a first rotor portion has a plurality of first blades radially installed around a rotation shaft, a second rotor portion has a plurality of second blades radially installed around the rotation shaft, in a state where a rotor is rotating, a raw material charged from a charging port is refined when sequentially passing between a liner and an end portion on an outer peripheral side of the first blade and between the liner and an end portion on an outer peripheral side of the second blade, and is discharged from the discharge port, and D1>D2, where a separation distance between the liner and the end portion on the outer peripheral side of the first blade is D1, and a separation distance between the liner and the end portion on the outer peripheral side of the second blade is D2.

First claim

What is claimed is:

1 . A refining device comprising:
a casing having a charging port and a discharge port of a raw material; a rotor disposed inside the casing and having
a rotation shaft,
a first rotor portion positioned on the charging port side, and
a second rotor portion positioned on the discharge port side; and
a liner disposed on an inner surface of the casing along an outer periphery of the rotor, wherein the first rotor portion has a plurality of first blades radially installed around the rotation shaft, the second rotor portion has a plurality of second blades radially installed around the rotation shaft, in a state where the rotor is rotating, the raw material charged from the charging port is refined when sequentially passing between the liner and an end portion on an outer peripheral side of each of the plurality of first blades and between the liner and an end portion on an outer peripheral side of each of the plurality of second blades, and the raw material is discharged from the discharge port, and D 1 >D 2 , where a separation distance between the liner and the end portion on the outer peripheral side of each of the plurality of first blades is D 1 , and a separation distance between the liner and the end portion on the outer peripheral side of each of the plurality of second blades is D 2 .

2 . The refining device according to claim 1 , wherein
0.5≤D 2 /D 1 ≤0.95.

3 . The refining device according to claim 1 , wherein
the end portion on the outer peripheral side of each of the plurality of first blades is positioned closer to the rotation shaft side than the end portion on the outer peripheral side of each of the plurality of second blades.

4 . The refining device according to claim 1 , wherein
N 1 <N 2 , where a number of the plurality of first blades is N 1 and a number of the plurality of second blades is N 2 .

5 . The refining device according to claim 4 , wherein
0.25≤N 1 /N 2 ≤0.8.

6 . The refining device according to claim 1 , wherein
L 1 <L 2 , where a length in a shaft direction of the rotation shaft of each of the plurality of first blades is L 1 and a length in the shaft direction of the rotation shaft of each of the plurality of second blades is L 2 .

Assignees

• Seiko Epson Corp

Inventors

• Kojima Hideki
• Oana Sotaro

Classifications

• B02C2018/147

  of the plural stage type · CPC title

• B02C18/14

  within horizontal containers {(B02C18/062, B02C18/065 take precedence)} · CPC title

• B02C18/18 Primary

  Knives; Mountings thereof · CPC title

• D21D1/38

  with horizontal shaft · CPC title

• B02C18/144 Primary

  with axially elongated knives · CPC title