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公开(公告)号：US10882050B2
公开(公告)日：2021-01-05
申请号：US15622314
申请日：2017-06-14
发明人： Taku Miyazaki , Takuichiro Daimaru , Kenichi Arima , Shinji Matsumoto , Yuta Takahashi , Kazushi Fukui , Takashi Iwata
摘要： The present invention improves the even distribution of a powder to a pulverized coal pipe. A rotary classifier including: a rotary shaft rotatably supported around a rotational axis extending in a vertical direction; a frame body supported by the rotary shaft and including an opening on the outer periphery of the frame body; a plurality of powder outlets provided along the rotation direction and opening on the upper section of the frame body; a plurality of blades extending in the vertical direction at the opening on the outer periphery of the frame body and provided along the rotation direction; and an annular member that serves as a constricting section provided so as to narrow the interval from the blades to the rotary shaft.
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公开(公告)号：US10722899B2
公开(公告)日：2020-07-28
申请号：US15524052
申请日：2015-08-31
发明人： Shinji Matsumoto , Takuichiro Daimaru , Kenichi Arima , Taku Miyazaki , Kazushi Fukui , Hidechika Uchida
摘要： Provided is a vertical roller mill equipped with a rotary classifier for causing a plurality of classification blades provided above a rotary table and positioned around an axis to rotate about the axis, wherein: of a solid fuel pulverized by a roller, the rotary classifier guides solid fuel fine powder from an outer-circumferential-side space to an inner-circumferential-side space surrounded by the plurality of classification blades, and suppresses, by collision with the plurality of classification blades, an intrusion of solid fuel coarse powder into the inner-circumferential-side space; and each of the plurality of classification blades is shaped in a manner such that there is no interference between a scattering direction in which the coarse powder that collided with the classification blades scatters and an intake direction in which the fine powder is guided to the inner-circumferential-side space, and the scattering direction is oriented upward relative to a horizontal direction.
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公开(公告)号：US10603673B2
公开(公告)日：2020-03-31
申请号：US15528253
申请日：2015-08-24
发明人： Shinji Matsumoto , Takuichiro Daimaru , Kenichi Arima , Taku Miyazaki , Kazushi Fukui , Hiroyuki Kobayashi
摘要： Provided is a solid fuel pulverizing device (100) provided with: a ventilation unit (30) configured to ventilate an interior of a housing (11) with primary air for supplying a solid fuel pulverized by a roller (13) to a classifier (16); a pressure detector (50) configured to detect an internal pressure of the housing (11) relative to a reference pressure; a flow rate detector (60) configured to detect a flow rate of the primary air blown into the interior of the housing (11) by the ventilation unit (30); and a controller (40) configured to perform control and transition the solid fuel pulverizing device (100) to a stopped state upon the internal pressure detected by the pressure detector (50) being a predetermined pressure or higher and the flow rate of the primary air detected by the flow rate detector (60) being a predetermined flow rate or less.
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