PROTECTIVE DEVICE, PULVERIZER, AND METHOD FOR REMOVING PROTECTIVE DEVICE

To restrict abrasion wear of a pulverization roller and an inner surface of a protective member.SOLUTION: Provided is a roller journal protector to be attached to a pulverizer. The pulverizer includes: a pulverization table; a pulverization roller unit 20; and an air outlet provided on an outer peri...

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Bibliographic Details
Main Author YAMAGUCHI SOTARO
Format Patent
LanguageEnglish
Japanese
Published 05.09.2023
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Summary:To restrict abrasion wear of a pulverization roller and an inner surface of a protective member.SOLUTION: Provided is a roller journal protector to be attached to a pulverizer. The pulverizer includes: a pulverization table; a pulverization roller unit 20; and an air outlet provided on an outer peripheral side of the pulverization table in order to blow out transporting gas upward. The pulverization roller unit 20 includes: a journal head 23; a journal shaft 22 supported by the journal head 23 and extending along a shaft line Y1; a pulverization roller 21 attached to the journal shaft 22 so as to be rotatable about the shaft line Y1; a shield 27b which encloses a lower section of the journal shaft 22 at a position where the journal head 23 and the pulverization roller 21 are adjacent to each other, to protect the pulverization roller unit 20 from solid fuel carried by the transporting gas; and a closing part 28 for closing a region above the shield 27b so that the solid fuel does not intrude into a narrow space formed between the pulverization roller 21 and the shield 27b.SELECTED DRAWING: Figure 7 【課題】粉砕ローラや保護部材の内面が摩耗することを抑制する。【解決手段】粉砕機は、粉砕テーブルと、粉砕ローラユニット20と、粉砕テーブルの外周側に設けられるとともに上方に向けて搬送ガスを吹き出す吹出口と、を備え、粉砕ローラユニット20は、ジャーナルヘッド23と、ジャーナルヘッド23に支持されるとともに軸線Y1に沿って延びるジャーナル軸22と、軸線Y1回りに回転可能にジャーナル軸22に取り付けられる粉砕ローラ21と、を有し、ジャーナルヘッド23と粉砕ローラ21とが隣接する位置でジャーナル軸22の下方部分を包囲して搬送ガスにより搬送される固体燃料から粉砕ローラユニット20を保護するシールド27bと、粉砕ローラ21とシールド27bとの間に形成される狭隘空間に固体燃料が侵入しないようにシールド27bの上方の領域を塞ぐ塞ぎ部28と、を備えるローラジャーナルプロテクタを提供する。【選択図】図7
Bibliography:Application Number: JP20220026941