SOLID FUEL CRUSHING DEVICE AND POWER GENERATION PLANT AND OPERATION METHOD OF SOLID FUEL CRUSHING DEVICE AND DESIGN METHOD OF SOLID FUEL CRUSHING DEVICE
To inhibit damage to a support part.SOLUTION: A mill 10 includes: a crushing table which crushes a solid fuel; a rotary classifier 16 which rotates around a center axis C1 to classify the solid fuel crushed by the crushing table; a housing which houses the crushing table and the rotary classifier 16...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To inhibit damage to a support part.SOLUTION: A mill 10 includes: a crushing table which crushes a solid fuel; a rotary classifier 16 which rotates around a center axis C1 to classify the solid fuel crushed by the crushing table; a housing which houses the crushing table and the rotary classifier 16; a motor which rotationally drives the rotary classifier 16; an upper bearing part 61 rotatably supporting the rotary classifier 16; and a lower seal box 58 in which a space S4 to be supplied with seal air is formed and which supplies the seal air to an area between the rotary classifier 16 and the housing. The lower seal box 58 has: a first upper wall part 58a defining an upper part of the space S4 and fixed to the rotary classifier 16; and a first lower wall part 58b defining a lower part of the space S4 and fixed to the housing.SELECTED DRAWING: Figure 2
【課題】支持部の損傷を抑制することを目的とする。【解決手段】ミル10は、固体燃料を粉砕する粉砕テーブルと、中心軸線C1を中心として回転し、粉砕テーブルで粉砕された固体燃料を分級する回転式分級機16と、粉砕テーブル及び回転式分級機16を収容するハウジングと、回転式分級機16を回転駆動するモータと、回転式分級機16を回転可能に支持する上部軸受部61と、シールエアが供給される空間S4が内部に形成され、回転式分級機16とハウジングとの間にシールエアを供給する下部シールボックス58と、を備えている。下部シールボックス58は、空間S4の上部を規定し回転式分級機16に固定される第1上側壁部58aと、空間S4の下部を規定しハウジングに固定される第1下側壁部58bと、を有する。【選択図】図2 |
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