JP3762902B2

JP3762902B2 - Rotating roll brush

Info

Publication number: JP3762902B2
Application number: JP2002196440A
Authority: JP
Inventors: 一雄石川
Original assignee: 昭和工業株式会社
Priority date: 2002-07-04
Filing date: 2002-07-04
Publication date: 2006-04-05
Anticipated expiration: 2022-07-04
Also published as: JP2004033570A

Description

【０００１】
【発明の属する技術分野】
本発明は回転シャフト又は回転ドラムの外周面にチャンネル形ブラシを螺旋巻きして成る、圧延鋼板等の研掃や洗浄等に用いられる回転ロールブラシに関する。
【０００２】
【従来の技術】
実公昭６３−３０２６５号はチャンネル形ブラシを樋状チャンネルを以って回転ドラム（中空ブラシロール）の外周面に螺旋巻きし、該回転ドラムの外周面に放水孔を開口せしめ、該回転ドラムの回転遠心力により上記放水孔から放水された冷却水を樋状チャンネルへ向け放出し、ブラシ材を冷却せんとした回転ロールブラシを示している。
【０００３】
又回転ロールブラシは圧延鋼板表面の酸化スケールの除去や該圧延鋼板表面の薬液（鋼板の酸性洗浄時の酸）を洗い流す場合に用いられるが、上記冷却水は上記酸化スケールや薬液を洗浄する洗浄水として機能する。
【０００４】
【発明が解決しようとする課題】
然しながら、上記回転ロールブラシにおける放水構造においては、回転ドラムの放水孔からの放水を樋状チャンネルによって妨害し、放水効果を損なう問題を有している。
【０００５】
これはブラシ植装密度を高めるために樋状チャンネルが互いに密着するように螺旋巻きされている構造と、樋状チャンネルの底面が上記放水孔を塞ぐように螺旋巻きされている構造に起因する。
【０００６】
上記回転ロールブラシにおいては放水孔から放出された水が樋状チャンネルの外側面に沿って流れ、更には該チャンネルによって挟着保持されたブラシ材の外側面に沿ってブラシ材毛先方向へ放流されるがその放水量は限定される。
【０００７】
従って樋状チャンネル内の全てのブラシ材を均一に冷却することが困難で、研掃熱によるブラシ材の脆化、樋状チャンネルの口縁部におけるブラシ材の折損を防止する目的を充分に達成し難い問題、適正な洗浄が行い難い問題を有している。
【０００８】
【課題を解決するための手段】
本発明による回転ロールブラシは、樋状チャンネル内、従って同チャンネル内に保持されたブラシ材への通水を促進し、よってブラシ材の冷却効果を向上してブラシ材の熱脆化を有効に防止し、上記チャンネル口縁部におけるブラシ材折損を有効に防止する水冷構造を持つ。
【０００９】
要述するとこの回転ロールブラシは、ブラシ材の基部を樋状チャンネルにて挟着保持して成るチャンネル形ブラシを使用する。
【００１０】
そして上記チャンネル形ブラシを樋状チャンネルを以って回転シャフトの外周面又は回転ドラムの外周面に螺旋巻きし回転ロールブラシを形成する。
【００１１】
上記回転ロールブラシの回転シャフト又は回転ドラムの外周面に多数の放水孔を開口せしめ、該回転シャフト又は回転ドラムの回転遠心力により上記放水孔から放水された冷却水を上記樋状チャンネルへ向け放出する構造を採りつつ、上記樋状チャンネルの底面に長手に亘り樋状チャンネルの底板を貫通せる多数の放水孔を開口せしめ、上記回転シャフト又は回転ドラムの放水孔から放出された冷却水を上記樋状チャンネルの放水孔を通じて樋状チャンネル内へ導入し、同チャンネル内のブラシ材を冷却する構成とする。
【００１２】
上記回転シャフト又は回転ドラムの放水孔からの放水を健全に促し、樋状チャンネル内への冷却水導入を促進するため、上記樋状チャンネルの底面に受水溝を形成し、該受水溝の底面に上記放水孔を開口せしめる。よって上記回転シャフト又は回転ドラムの放水孔から放出された冷却水を該受水溝で受水し、上記樋状チャンネルの放水孔から同チャンネル内へ導入する構成とする。
【００１３】
又上記受水溝はその両端を上記樋状チャンネルの両端において閉鎖し、受水溝から放水孔への冷却水導入を効率的に行う。
【００１４】
上記受水溝を形成する手段として上記樋状チャンネルの底板の両側にスタンドを形成する。即ち上記樋状チャンネルの左右側板と底板との連設部を摺曲して下方に向け突出する一対のスタンドを同チャンネルの長手方向に亘り形成し、上記チャンネル形ブラシを該スタンドを以って上記回転シャフトの外周面又は回転ドラムの外周面に螺旋巻きして該スタンド間に樋状チャンネル長手方向に亘る受水溝を形成する。
【００１５】
そして上記受水溝の底面の長手に亘り樋状チャンネルの底板を貫通せる多数の放水孔を開口せしめ、上記回転シャフト又は回転ドラムの放水孔から放出された冷却水を上記樋状チャンネルの受水溝内に受水しつつ該受水溝の底面の上記放水孔を通じて樋状チャンネル内へ導入する構成とする。
【００１６】
更に上記樋状チャンネル内への冷却水の導入を促進し、効率的にする手段として、同チャンネルの左右側板の上端縁から長手に亘り間隔を置いて延出した各爪片を上記ブラシ材内へ介入しつつ内側へ曲げ込んで二つ折りブラシ材の内側に挿入した芯材を押さえ込む構成を採りながら、上記樋状チャンネルの底面に開口せしめた上記放水孔を上記爪片の介入によって区分けされたブラシ束間に配置し、上記回転シャフト又は回転ドラムの放水孔から放出された冷却水を上記樋状チャンネルの放水孔を通じ上記ブラシ束間において樋状チャンネル内へ導入する構成とする。
【００１７】
この場合も上記回転シャフト又は回転ドラムの放水孔からの放水作用を助長し、チャンネル内への冷却水導入を効率的に行わせるため、上記樋状チャンネルの底面に受水溝を形成し、該受水溝の底面に上記放水孔を開口せしめる。よって上記回転シャフト又は回転ドラムの放水孔から回転遠心力により放出された冷却水を該受水溝で受水し、上記樋状チャンネルの放水孔から同チャンネル内へ導入する。
【００１８】
又上記受水溝はその両端を上記樋状チャンネルの両端において閉鎖し、受水溝から放水孔への冷却水導入を効率的にすることができる。
【００１９】
更に上記樋状チャンネル内への冷却水の導入を促進し、効率的に行う手段として、上記チャンネル形ブラシを形成する樋状チャンネルの底面に長手に亘り樋状チャンネルの底板を貫通せる第２放水孔群を開口せしめ、他方上記回転シャフト又は回転ドラムの外周面の母線上に導水溝を形成し、該導水溝底面の長手に亘り第１放水孔群を開口せしめ、上記回転シャフト又は回転ドラムの第１放水孔群から放出された冷却水を上記導水溝内へ導入し、更に上記樋状チャンネルの第２放水孔群を通じて樋状チャンネル内へ導入する構成とした
【００２０】
この場合も上記回転シャフト又は回転ドラムの第１放水孔群からの放水作用を助長し、チャンネル内への冷却水導入を効率的に行わせるため、上記樋状チャンネルの底面に受水溝を形成し、該受水溝の底面に上記第２放水孔群を開口せしめる。よって上記回転シャフト又は回転ドラムの第１放水孔群から回転遠心力により放出された冷却水を該受水溝で受水し、上記樋状チャンネルの第２放水孔群から同チャンネル内へ導入する。
【００２１】
上記導水溝内には同導水溝の略全長に亘り放水チャンネルを上記導水溝の開口面側において凸曲と成るように内嵌めし、該放水チャンネルの内嵌めにより該放水チャンネルと上記導水溝底面によって閉鎖された管状導水路を形成し、該放水チャンネルの頂面の長手に亘り内外面を貫通し且つ上記第１放水孔群より小径で且つ小ピッチの小口径放水孔を無数に穿孔し、上記回転シャフト又は回転ドラムの第１放水孔群から放出された冷却水を上記環状導水路内へ放水し、更に上記小口径放水孔を通じて放水された冷却水を上記樋状チャンネルの第２放水孔群を通じて樋状チャンネル内へ導入する構成とする。
【００２２】
【発明の実施の形態】
以下本発明の実施形態例を図１乃至図１２に基づいて説明する。
【００２３】
回転ロールブラシに用いられるチャンネル形ブラシ１は図１，図２に示すように、二つ折りしたブラシ材２の基部内側に金属製の芯材３を内挿し、該基部外側を金属製の樋状チャンネル４にて該芯材３と共に挟着保持した構成を有する。
【００２４】
図１に示すチャンネル形ブラシ１は、芯材３として金属製の線材３ａを用い、図２に示すチャンネル形ブラシ１は芯材３としてＶ字形に折曲した二つ折り条板３ｂを用い、これら線材３ａ又は二つ折り条板３ｂを樋状チャンネル４にてブラシ材基部と共に挟着し、ブラシ材２の脱出を防止している。
【００２５】
更に図２に示すチャンネル形ブラシ１は、上記樋状チャンネル４の左右側板５の口縁部からチャンネル長手方向に亘り間隔を置いて多数の爪片６を一体に打ち抜きして延出し、該爪片６をブラシ材２内へ介入しつつ上記二つ折り条板３ｂの内側へ曲げ込み、芯材３の脱出を防止している。
【００２６】
上記図１又は図２に例示するチャンネル形ブラシ１を図４，図５に示すように、回転シャフト７に樋状チャンネル４を以って螺旋巻きしロールブラシを形成する。又は図６に示すように、上記チャンネル形ブラシ１を回転シャフト７に環状間隔を置いて一体回転するように外挿した回転ドラム８の外周面に樋状チャンネル４を以って螺旋巻きしロールブラシを形成する。
【００２７】
又は図７に示すように、回転ドラム８の一端と他端に回転軸９を設け、該回転ドラム８の外周面に上記チャンネル形ブラシ１を樋状チャンネル４を以って螺旋巻きしロールブラシを形成する。
【００２８】
上記チャンネル形ブラシ１は何れも植装密度を上げるため、樋状チャンネル４の側板５が密着するように螺旋巻きされている。又螺旋巻きの方法として回転シャフト７又は回転ドラム８をゆっくりと回転させながら長尺のチャンネル形ブラシ１を巻き付けていく方法、又は図３に示すように、予めチャンネル形ブラシ１を螺旋巻きしたコイルブラシ１′を準備し、このコイルブラシ１′を上記回転シャフト７又は回転ドラム８の外周面に一体回転可に単数又は複数外挿して回転ロールブラシを構成する。
【００２９】
上記コイルブラシ１′は図２に示すチャンネル形ブラシ１を密着螺旋巻きしつつ、各巻間における樋状チャンネル４の左右側板５と底板２１の連設部に形成した後記せるスタンド２０の端部をスポット溶接２２してコイル形態を保持する。
【００３０】
上記回転ロールブラシの回転シャフト７又は回転ドラム８の外周面に同シャフト７又はドラム８の長手に亘り間隔を置いて多数の冷却水１１放水用の放水孔１０，１４を開口せしめる。
【００３１】
冷却水１１の給水手段として図４に示すように、回転シャフト７の軸線上に通水路１２を設け、該通水路１２に上記放水孔１０を連通せしめる。
【００３２】
又は図６に示すように、上記回転シャフト７の軸線上に通水路１２を設け、該通水路１２に上記放水孔１０を連通せしめると共に、環状間隔１３を存して外挿された回転ドラム８の外周面にドラム周壁を貫通せる別の放水孔１４を同ドラム長手に亘り間隔を置いて多数開口せしめる。上記シャフト放水孔１０とドラム放水孔１４とは環状間隔１３を介して連通する。
【００３３】
又は図７に示すように、左右回転軸９間に軸線上に延在する通水パイプ１５を横設し、一方の回転軸９の軸線に設けた通水路１２を介して通水パイプ１５内に冷却水１１を供給するようにし、更に該通水パイプ１５の外周面にパイプ壁を貫通せる放水孔１６をパイプ長手方向に亘り間隔的に開口せしめる。
【００３４】
他方図６と同様、回転ドラム８の外周面にドラム周壁を貫通せる別の放水孔１４を同ドラム長手に亘り間隔を置いて多数開口せしめる。上記パイプ放水孔１６とドラム放水孔１４とは環状間隔１３を介して連通する。
【００３５】
而して上記回転シャフト６又は回転ドラム８の高速回転によりブラシ材２の毛先を圧延鋼板等の表面に接触させ研掃している時、同シャフト７又はドラム８の回転遠心力により上記放水孔１０，１４，１６から放水された冷却水１１を上記回転シャフト７又は回転ドラム８に螺旋巻きされた樋状チャンネル４へ向け放出する。
【００３６】
他方図１，図２等に示すように、上記樋状チャンネル４の底面に長手に亘り樋状チャンネル４の底板２１を貫通せる多数の放水孔１７を間隔を置いて開口せしめる。このチャンネル放水孔１７は図２Ｃに示すように、長孔又は真円孔にする。
【００３７】
上記回転シャフト７又は回転ドラム８の放水孔１０，１４から放出された冷却水１１を上記回転遠心力にて上記樋状チャンネル４の底板２１に貫設した放水孔１７を通じて樋状チャンネル４内へ導入し、ブラシ材２の毛先へ向け放流して同チャンネル４内のブラシ材２を冷却する構成とする。
【００３８】
上記回転シャフト７又は回転ドラム８の放水孔１０，１４からの放水作用を健全に惹起させるため、上記樋状チャンネル４の底面に受水溝１８を形成し、該受水溝１８の底面に上記放水孔１７を開口せしめる。よって上記回転シャフト７又は回転ドラム８の放水孔１０，１４から放出された冷却水１１を該受水溝１８で受水し、上記樋状チャンネル４の放水孔１７から同チャンネル４内へ導入する構成とする。
【００３９】
図１Ｂ、図２Ｂに示すように、上記受水溝１８はその両端を上記樋状チャンネル４の両端において閉鎖し、受水溝１８からチャンネル放水孔１７への冷却水導入を効率的に行う。１９は受水溝１８の閉鎖部を示す。
【００４０】
上記受水溝１８を形成する手段として図２に示すように、上記樋状チャンネル４の底板２１の両側にスタンド２０を形成する。即ち上記樋状チャンネル４の左右側板５と底板２１との連設部を摺曲して下方に向け突出する一対のスタンド２０を同チャンネル４の長手方向に亘り形成し、上記チャンネル形ブラシ１を該スタンド２０を以って上記回転シャフト７の外周面又は回転ドラム８の外周面に螺旋巻きする。よって上記スタンド２０間に樋状チャンネル４の長手方向に亘る受水溝１８を形成する。該受水溝１８は一対のスタンド２０とチャンネル底板２１と回転シャフト７又は回転ドラム８の外周面によって閉鎖され連通ダクトを形成している。
【００４１】
又図１に示すチャンネル形ブラシ１においても、樋状チャンネル４の底板２１を内方へ僅かに湾曲させて受水溝１８を形成している。
【００４２】
上記受水溝１８は樋状チャンネル４の底板２１に外方へ突出する多数の突起を形成する方法、又は同底板２１の底面にチャンネル長手に亘り溝を刻設する方法等によって構成することができる。
【００４３】
更に上記樋状チャンネル４内への冷却水１１の導入を効率的に行う手段として、図２，図５，図８等に示すように、同チャンネル４の左右側板５の上端縁から長手に亘り間隔を置いて、且つ互いに対向して延出した各爪片６を上記ブラシ材２内へ介入しつつ内側へ曲げ込んで二つ折りブラシ材２の内側に挿入した芯材３を押さえ込む構成を採りながら、上記樋状チャンネル４の底面に開口せしめた上記放水孔１７を上記爪片６の介入によって区分けされたブラシ束２ａ間に配置し、換言すると爪片６と対応する位置に配置し、上記回転シャフト７又は回転ドラム８の放水孔１０，１４から放出された冷却水１１を上記樋状チャンネル４の放水孔１６を通じ上記ブラシ束２ａ間において樋状チャンネル４内へ導入する構成とする。
【００４４】
即ち、上記回転シャフト７又は回転ドラム８の放水孔１０，１４から放出された冷却水１１を、上記受水溝１８で受水して樋状チャンネル全長に行き渡らせながら上記樋状チャンネル４の放水孔１７を通じて樋状チャンネル４内のブラシ束２ａ間に導入する構成とする。
【００４５】
ブラシ束２ａ間には爪片６の介入によってブラシ材２の粗密度部が形成されており、この粗密度部と放水孔１７を対向することにより、同放水孔１７を通じてのチャンネル４内への通水が良好になされる。
【００４６】
更に図９乃至図１２に示すように、他の実施形態として上記チャンネル形ブラシ１を形成する樋状チャンネル４の底面に長手に亘り樋状チャンネル４の底板２１を貫通せる多数の放水孔（第２放水孔群）１７を開口せしめ、他方上記回転シャフト７又は回転ドラム８の外周面の母線上に導水溝２３を形成し、該導水溝２３底面の長手に亘り多数の放水孔（第１放水孔群）１０，１４を開口せしめ、この導水溝２３のシャフト７又はドラム８外周面の開口面を上記チャンネル形ブラシ１にて閉鎖し管状導水路を形成する構成とする。
【００４７】
上記によって上記回転シャフト７又は回転ドラム８の第１放水孔群１０，１４から放出された冷却水を上記導水溝（管状導水路）２３内へ導入し、更にこの管状導水路２３内の冷却水１１を上記樋状チャンネル４底面で開口せる第２放水孔群１７を通じて樋状チャンネル４内へ導入する構成とする。
【００４８】
上記導水溝２３は回転シャフト７又は回転ドラム８の周方向へ等間隔に複数条配する。この導水溝２３内には同導水溝２３の略全長に亘り放水チャンネル２４を内嵌めし、該放水チャンネル２４に放水孔１０，１４より小径で且つ小ピッチの小口径放水孔２５を無数に穿孔する。
【００４９】
放水チャンネル２４は図示のように平条板を湾曲形チャンネルに曲げ加工し、該湾曲形放水チャンネル２４を導水溝２３の開口面側において凸曲と成るように内嵌めし、該湾曲形放水チャンネル２４の頂面がシャフト７又はドラム８の周面と同一円軌跡となる高さに設定する。
【００５０】
そしてこの湾曲形放水チャンネル２４の頂面の長手に亘り内外面を貫通せる上記小口径放水孔２５を開口せしめる。上記湾曲形放水チャンネル２４を導水溝２３内に内嵌めすることにより、上記湾曲形放水チャンネル２４の内面側に放水孔１０，１４が開口せる長手に亘る内部導水溝２３ａを形成し、同湾曲形放水チャンネル２４の外面側に長手に亘る左右一対の外部導水溝２３ｂを形成する。
【００５１】
上記内部導水溝２３ａは湾曲形放水チャンネル２４と導水溝２３底面によって閉鎖され管状導水路を形成する。他方外部導水溝２３ｂは上記湾曲形放水チャンネル２４の左右傾斜面と導水溝２３の左右内側面間に画成される。
【００５２】
上記シャフト７又はドラム８の外周面に螺旋状に密着巻きされたチャンネル形ブラシ１は、上記湾曲形放水チャンネル２４の頂面を押さえつつ巻装され、上記外部導水溝２３ｂ、即ち導水溝２３の開口面を閉鎖し管状導水路を形成する。
【００５３】
上記導水溝２３はドラム８又はシャフト７の軸線と平行に延在し、その軸線方向両端は閉鎖され導水を効率的にする。
【００５５】
又湾曲形放水チャンネル２４を導水溝２３内に内嵌めした場合には、放水孔１０，１４より内部導水溝２３ａ内へ放水され、更に小口径放水孔２５を通じて放水された冷却水１１は樋状チャンネル４底面の放水孔１７通じてチャンネル４内へ導入されると共に、残冷却水１１は上記外部導水溝２３ｂ内に導入保水され、この冷却水１１が上記樋状チャンネル４底面の放水孔１７を通じてチャンネル４内へ導入される。
【００５６】
前記のように各実施形態に示す放水孔１７は図２Ｃに破線で示すように、チャンネル長手方向に楕円形状を呈する長孔とすることにより、ブラシ束２ａ間を含めたブラシ束２ａ基部底面に冷却水１１を通水することができる。
【００５７】
同様に各実施形態における受水溝１８は図１Ｂ、図２Ｂに示すように、上記チャンネル形ブラシ１を構成する樋状チャンネル４の両端を両側より加圧して側板５を閉じ合わせ、並びに図２の場合は側板５の閉じ合わせによりスタンド２０両端を閉じ合わせ閉鎖する。よってチャンネル４両端からの脱毛を防止すると共に、上記受水溝１８の両端を上記樋状チャンネル４の両端において閉鎖し、受水溝１８両端からの冷却水１１の流出を有効に防止し、受水溝１８から放水孔１７への冷却水導入を効率的にする。
【００５８】
【発明の効果】
本発明に係る回転ロールブラシは、回転シャフト又は回転ドラムの外周面で開口せる放水孔からの冷却水の放水を助長し、該冷却水を上記回転シャフト又は回転ドラムに螺旋巻きされた樋状チャンネル内に導入して同チャンネルに保持されたブラシ材に可及的均一に通水し、よってブラシ材の冷却効果を向上してブラシ材の熱脆化を有効に防止し、上記チャンネル口縁部におけるブラシ材折損を有効に防止することができる。
【図面の簡単な説明】
【図１】Ａは回転ロールブラシに用いるチャンネル形ブラシの横断面図、Ｂは同Ａ−Ａ線断面図。
【図２】Ａは回転ロールブラシに用いる他の構造のチャンネル形ブラシの横断面図、Ｂは同底面図、Ｃは該チャンネル形ブラシを形成する樋状チャンネルを平板状に展開した状態を示す平面図、Ｄはブラシ材を省略して示す同チャンネル形ブラシの斜視図。
【図３】コイルブラシの縦断面図。
【図４】回転シャフトに図１に示すチャンネル形ブラシを螺旋巻きして成る回転ロールブラシの縦断面図。
【図５】回転シャフトに図２に示すチャンネル形ブラシを螺旋巻きして成る回転ロールブラシの縦断面図。
【図６】上記回転シャフトに外挿した回転ドラムに図２に示すチャンネル形ブラシを螺旋巻きして成る回転ロールブラシの縦断面図。
【図７】両端に回転軸を設けた回転ドラムに図２に示すチャンネル形ブラシを螺旋巻きして成る回転ロールブラシの縦断面図。
【図８】Ａは図４に示す回転ロールブラシの拡大横断面図、Ｂは図５、図６、図７に示す回転ロールブラシの拡大横断面図。
【図９】上記回転シャフト又は回転ドラムに導水溝を設け、図２に示すチャンネル形ブラシを螺旋巻きして成る回転ロールブラシの縦断面図。
【図１０】図９の回転ロールブラシの横断面図。
【図１１】図１０における導水溝部の拡大断面図。
【図１２】上記導水溝に内嵌めする湾曲形放水チャンネルの斜視図。
【符号の説明】
１…チャンネル形ブラシ、１′…コイルブラシ、２…ブラシ材、２ａ…ブラシ束、３…芯材、３ａ…線材、３ｂ…二つ折り条板、４…樋状チャンネル、５…左右側板、６…爪片、７…回転シャフト、８…回転ドラム、９…回転軸、１０…シャフト放水孔、１１…冷却水、１２…通水路、１３…環状間隔、１４…ドラム放水孔、１５…通水パイプ、１６…パイプ放水孔、１７…チャンネル放水孔、１８…受水溝、１９…閉鎖部、２０…スタンド、２１…底板、２２…スポット溶接、２３…導水溝、２３ａ…内部導水溝、２３ｂ…外部導水溝、２４…湾曲形放水チャンネル、２５…小口径放水孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotating roll brush that is formed by spirally winding a channel-shaped brush around an outer peripheral surface of a rotating shaft or a rotating drum and is used for polishing or cleaning a rolled steel sheet or the like.
[0002]
[Prior art]
In Japanese Utility Model Publication No. 63-30265, a channel-shaped brush is spirally wound around the outer peripheral surface of a rotating drum (hollow brush roll) with a bowl-shaped channel, and a water discharge hole is opened on the outer peripheral surface of the rotating drum. The rotating roll brush which discharge | released the cooling water discharged | emitted from the said water discharge hole by the rotational centrifugal force toward the bowl-shaped channel, and made the brush material a cooling rod is shown.
[0003]
The rotating roll brush is used to remove the oxidized scale on the surface of the rolled steel sheet and to wash away the chemical solution (acid at the time of acid cleaning of the steel plate) on the surface of the rolled steel plate, but the cooling water is used to wash the oxidized scale and chemical solution. Acts as water.
[0004]
[Problems to be solved by the invention]
However, the water discharge structure of the rotating roll brush has a problem that the water discharge from the water discharge hole of the rotary drum is obstructed by the bowl-shaped channel and the water discharge effect is impaired.
[0005]
This is due to the structure in which the hook-shaped channels are spirally wound so as to closely contact each other in order to increase the brush planting density and the structure in which the bottom surface of the hook-shaped channels is spirally wound so as to block the water discharge holes.
[0006]
In the rotary roll brush, water discharged from the water discharge holes flows along the outer surface of the bowl-shaped channel, and further flows along the outer surface of the brush material sandwiched and held by the channel toward the brush tip. However, the amount of water discharged is limited.
[0007]
Therefore, it is difficult to cool all the brush materials in the bowl-shaped channel uniformly, and the purpose of preventing the brittleness of the brush material due to the heat of cleaning and the breakage of the brush material at the edge of the bowl-shaped channel is sufficiently achieved. It is difficult to perform proper cleaning.
[0008]
[Means for Solving the Problems]
The rotating roll brush according to the present invention promotes the water flow to the brush material held in the bowl-shaped channel, and hence the channel, thereby improving the cooling effect of the brush material and effectively making the thermal embrittlement of the brush material effective. It has a water cooling structure that prevents and effectively prevents breakage of the brush material at the channel mouth edge.
[0009]
In short, this rotary roll brush uses a channel-type brush in which the base portion of the brush material is sandwiched and held by a bowl-shaped channel.
[0010]
Then, the channel-shaped brush is spirally wound around the outer peripheral surface of the rotating shaft or the outer peripheral surface of the rotating drum with a bowl-shaped channel to form a rotating roll brush.
[0011]
A large number of water discharge holes are opened in the outer peripheral surface of the rotary shaft or rotary drum of the rotary roll brush, and the cooling water discharged from the water discharge holes by the rotary centrifugal force of the rotary shaft or rotary drum is discharged toward the bowl-shaped channel. While adopting such a structure, a plurality of water discharge holes that penetrate the bottom plate of the bowl-shaped channel are opened in the bottom surface of the bowl-shaped channel, and the cooling water discharged from the water discharge holes of the rotary shaft or the rotary drum is supplied to the bowl-shaped channel. It introduce | transduces in a bowl-shaped channel through the water discharge hole of a channel, and it is set as the structure which cools the brush material in the channel.
[0012]
In order to promote sound water discharge from the water discharge hole of the rotary shaft or the rotary drum and promote the introduction of cooling water into the bowl-shaped channel, a water receiving groove is formed on the bottom surface of the bowl-shaped channel, Open the water discharge hole on the bottom. Therefore, the cooling water discharged from the water discharge hole of the rotating shaft or the rotating drum is received by the water receiving groove and introduced into the channel from the water discharging hole of the bowl-shaped channel.
[0013]
Further, both ends of the water receiving groove are closed at both ends of the bowl-shaped channel, and cooling water is efficiently introduced from the water receiving groove to the water discharge hole.
[0014]
As means for forming the water receiving groove, stands are formed on both sides of the bottom plate of the bowl-shaped channel. That is, a pair of stands that slid along the connecting portion between the left and right side plates and the bottom plate of the bowl-shaped channel and project downward are formed in the longitudinal direction of the channel, and the channel-shaped brush is formed with the stand. A water-receiving groove extending in the longitudinal direction of the bowl-shaped channel is formed between the stands by spirally winding the outer peripheral surface of the rotary shaft or the outer peripheral surface of the rotary drum.
[0015]
A number of water discharge holes that pass through the bottom plate of the bowl-shaped channel are opened over the length of the bottom surface of the water-receiving groove, and the cooling water discharged from the water discharge hole of the rotating shaft or the rotating drum is received by the water-receiving channel of the bowl-shaped channel. It is set as the structure introduce | transduced into a bowl-shaped channel through the said water discharge hole of the bottom face of this water-receiving groove, receiving water in a groove | channel.
[0016]
Further, as a means for promoting the introduction of cooling water into the bowl-shaped channel and making it efficient, each claw piece extending at a distance from the upper edge of the left and right side plates of the channel is arranged in the brush material. The water discharge hole opened on the bottom surface of the bowl-shaped channel was divided by the intervention of the nail pieces while adopting a configuration in which the core material inserted inside the half-fold brush material was pressed while bending inward It arrange | positions between brush bundles, It is set as the structure which introduce | transduces the cooling water discharged | emitted from the water discharge hole of the said rotating shaft or a rotating drum into a hook-shaped channel between the said brush bundles through the water discharge hole of the said hook-shaped channel.
[0017]
Also in this case, in order to promote the water discharge action from the water discharge hole of the rotary shaft or the rotary drum and to efficiently introduce the cooling water into the channel, a water receiving groove is formed on the bottom surface of the bowl-shaped channel, The water discharge hole is opened at the bottom of the water receiving groove. Therefore, the cooling water discharged by the rotating centrifugal force from the water discharge hole of the rotating shaft or the rotating drum is received by the water receiving groove and introduced into the channel from the water discharging hole of the bowl-shaped channel.
[0018]
Further, both ends of the water receiving groove are closed at both ends of the bowl-shaped channel, so that cooling water can be introduced efficiently from the water receiving groove to the water discharge hole.
[0019]
Further, as a means for facilitating the introduction of cooling water into the bowl-shaped channel and performing it efficiently, a second water discharge that allows the bottom plate of the bowl-shaped channel forming the channel-shaped brush to penetrate the bottom plate of the bowl-shaped channel over the longitudinal direction. The hole group is opened, and on the other hand, a water guide groove is formed on the bus bar on the outer peripheral surface of the rotary shaft or the rotary drum, the first water discharge hole group is opened over the length of the bottom surface of the water guide groove, and the rotary shaft or the rotary drum. The cooling water discharged from the first water discharge hole group is introduced into the water guide groove and further introduced into the bowl-shaped channel through the second water discharge hole group of the bowl-shaped channel.
Also in this case, a water receiving groove is formed on the bottom surface of the bowl-shaped channel in order to promote the water discharging action from the first water discharging hole group of the rotating shaft or the rotating drum and to efficiently introduce the cooling water into the channel. Then, the second water discharge hole group is opened at the bottom surface of the water receiving groove. Therefore, the cooling water discharged by the rotational centrifugal force from the first water discharge hole group of the rotary shaft or the rotary drum is received by the water receiving groove and introduced into the channel from the second water discharge hole group of the bowl-shaped channel. .
[0021]
A water discharge channel is fitted into the water guide groove so as to form a convex curve on the opening surface side of the water guide groove over substantially the entire length of the water guide groove, and the water discharge channel and the bottom surface of the water guide groove are formed by the internal fitting of the water discharge channel. Forming a tubular water conduit closed by, and penetrating countless small-diameter water discharge holes penetrating the inner and outer surfaces over the length of the top surface of the water discharge channel and having a smaller diameter and a smaller pitch than the first water discharge hole group, Cooling water discharged from the first water discharge hole group of the rotating shaft or the rotating drum is discharged into the annular water conduit, and further, the cooling water discharged through the small-diameter water discharge hole is discharged to the second water discharge hole of the bowl-shaped channel. It is configured to be introduced into the saddle channel through the group.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to FIGS.
[0023]
As shown in FIGS. 1 and 2, a channel-type brush 1 used for a rotating roll brush has a metal core 3 inserted inside a base of a brush material 2 folded in half, and the base outside is formed of a metal bowl. The channel 4 is sandwiched and held together with the core material 3.
[0024]
The channel-shaped brush 1 shown in FIG. 1 uses a metal wire 3a as the core material 3, and the channel-shaped brush 1 shown in FIG. 2 uses a two-fold plate 3b bent into a V shape as the core material 3. The wire material 3a or the two-fold strip plate 3b is sandwiched together with the brush material base by the flanged channel 4 to prevent the brush material 2 from escaping.
[0025]
Further, the channel-type brush 1 shown in FIG. 2 is formed by punching and extending a plurality of claw pieces 6 integrally from the edge portions of the left and right side plates 5 of the bowl-shaped channel 4 at intervals in the channel longitudinal direction. While the piece 6 is intervened in the brush material 2, it is bent into the inside of the two-fold plate 3 b to prevent the core material 3 from escaping.
[0026]
The channel-type brush 1 illustrated in FIG. 1 or FIG. 2 is spirally wound around the rotary shaft 7 with the hook-shaped channel 4 to form a roll brush, as shown in FIGS. Alternatively, as shown in FIG. 6, the channel-shaped brush 1 is spirally wound around the outer peripheral surface of a rotating drum 8 that is extrapolated so as to rotate integrally with the rotating shaft 7 at an annular interval, with a hook-shaped channel 4. Form a brush.
[0027]
Alternatively, as shown in FIG. 7, a rotating shaft 9 is provided at one end and the other end of the rotating drum 8, and the channel brush 1 is spirally wound around the outer peripheral surface of the rotating drum 8 with a bowl-shaped channel 4. Form.
[0028]
Each of the channel-type brushes 1 is spirally wound so that the side plates 5 of the bowl-shaped channels 4 are in close contact with each other in order to increase the planting density. Further, as a spiral winding method, a long channel-shaped brush 1 is wound while the rotating shaft 7 or the rotating drum 8 is slowly rotated, or a coil in which the channel-shaped brush 1 is spirally wound in advance as shown in FIG. A brush 1 'is prepared, and one or a plurality of coil brushes 1' are extrapolated on the outer peripheral surface of the rotary shaft 7 or the rotary drum 8 so as to be integrally rotatable so as to constitute a rotary roll brush.
[0029]
The coil brush 1 'is formed by forming the channel-shaped brush 1 shown in FIG. The coil form is maintained by spot welding 22.
[0030]
A large number of water discharge holes 10 and 14 for discharging the cooling water 11 are opened on the outer peripheral surface of the rotary shaft 7 or the rotary drum 8 of the rotary roll brush at intervals along the length of the shaft 7 or the drum 8.
[0031]
As shown in FIG. 4 as water supply means for the cooling water 11, a water passage 12 is provided on the axis of the rotary shaft 7, and the water discharge hole 10 is communicated with the water passage 12.
[0032]
Alternatively, as shown in FIG. 6, a water passage 12 is provided on the axis of the rotary shaft 7, the water discharge hole 10 is communicated with the water passage 12, and the rotating drum 8 is extrapolated with an annular interval 13. A large number of other water discharge holes 14 that penetrate the drum peripheral wall are opened at intervals along the length of the drum. The shaft water discharge hole 10 and the drum water discharge hole 14 communicate with each other through an annular interval 13.
[0033]
Alternatively, as shown in FIG. 7, a water passage pipe 15 extending on the axis line is provided between the left and right rotation shafts 9, and the water passage pipe 15 is provided through a water passage 12 provided on the axis line of the one rotation shaft 9. Further, the cooling water 11 is supplied to the outer peripheral surface of the water flow pipe 15, and water discharge holes 16 penetrating the pipe wall are opened at intervals in the longitudinal direction of the pipe.
[0034]
On the other hand, as in FIG. 6, a number of other water discharge holes 14 that allow the drum peripheral wall to penetrate the outer peripheral surface of the rotary drum 8 are opened at intervals along the length of the drum. The pipe water discharge hole 16 and the drum water discharge hole 14 communicate with each other through an annular interval 13.
[0035]
Thus, when the bristles of the brush material 2 are brought into contact with the surface of a rolled steel plate or the like by high-speed rotation of the rotating shaft 6 or the rotating drum 8, the water discharge is performed by the rotating centrifugal force of the shaft 7 or the drum 8. Cooling water 11 discharged from the holes 10, 14, 16 is discharged toward the bowl-shaped channel 4 spirally wound around the rotating shaft 7 or the rotating drum 8.
[0036]
On the other hand, as shown in FIG. 1, FIG. 2, etc., a large number of water discharge holes 17 that allow the bottom plate 21 of the bowl-shaped channel 4 to penetrate the bottom surface of the bowl-shaped channel 4 are opened at intervals. The channel water discharge hole 17 is a long hole or a perfect hole as shown in FIG. 2C.
[0037]
The cooling water 11 discharged from the water discharge holes 10 and 14 of the rotary shaft 7 or the rotary drum 8 is introduced into the bowl-shaped channel 4 through the water discharge holes 17 penetrating the bottom plate 21 of the bowl-shaped channel 4 by the rotary centrifugal force. The brush material 2 is introduced and discharged toward the ends of the brush material 2 to cool the brush material 2 in the channel 4.
[0038]
A water receiving groove 18 is formed on the bottom surface of the bowl-shaped channel 4 in order to cause the water discharging action from the water discharging holes 10 and 14 of the rotating shaft 7 or the rotating drum 8 to sound. The water discharge hole 17 is opened. Therefore, the cooling water 11 discharged from the water discharge holes 10 and 14 of the rotary shaft 7 or the rotary drum 8 is received by the water receiving groove 18 and introduced into the channel 4 from the water discharge hole 17 of the bowl-shaped channel 4. The configuration.
[0039]
As shown in FIGS. 1B and 2B, both ends of the water receiving groove 18 are closed at both ends of the bowl-shaped channel 4, and cooling water is efficiently introduced from the water receiving groove 18 into the channel water discharge hole 17. Reference numeral 19 denotes a closed portion of the water receiving groove 18.
[0040]
As shown in FIG. 2, stands 20 are formed on both sides of the bottom plate 21 of the bowl-shaped channel 4 as means for forming the water receiving groove 18. That is, a pair of stands 20 are formed along the longitudinal direction of the channel 4 by bending the connecting portion between the left and right side plates 5 and the bottom plate 21 of the bowl-shaped channel 4 and projecting downward. The stand 20 is spirally wound around the outer peripheral surface of the rotary shaft 7 or the outer peripheral surface of the rotary drum 8. Therefore, a water receiving groove 18 extending in the longitudinal direction of the bowl-shaped channel 4 is formed between the stands 20. The water receiving groove 18 is closed by a pair of stands 20, a channel bottom plate 21, and the outer peripheral surface of the rotary shaft 7 or the rotary drum 8 to form a communication duct.
[0041]
Also in the channel-type brush 1 shown in FIG. 1, the water receiving groove 18 is formed by slightly curving the bottom plate 21 of the bowl-shaped channel 4 inward.
[0042]
The water receiving groove 18 may be formed by a method of forming a large number of protrusions protruding outward on the bottom plate 21 of the bowl-shaped channel 4 or a method of forming grooves on the bottom surface of the bottom plate 21 over the length of the channel. it can.
[0043]
Furthermore, as means for efficiently introducing the cooling water 11 into the bowl-shaped channel 4, as shown in FIGS. 2, 5, 8 and the like, the upper end edge of the left and right side plates 5 of the channel 4 extends from the longitudinal direction. A configuration is adopted in which the nail pieces 6 extending at an interval and facing each other are bent inward while interposing into the brush material 2 and the core material 3 inserted inside the fold-up brush material 2 is pressed down. However, the water discharge hole 17 opened on the bottom surface of the bowl-shaped channel 4 is arranged between the brush bundles 2a divided by the intervention of the claw piece 6, in other words, arranged at a position corresponding to the claw piece 6, The cooling water 11 discharged from the water discharge holes 10 and 14 of the rotary shaft 7 or the rotary drum 8 is configured to be introduced into the bowl-shaped channel 4 between the brush bundles 2 a through the water discharge holes 16 of the bowl-shaped channel 4.
[0044]
That is, the cooling water 11 discharged from the water discharge holes 10 and 14 of the rotary shaft 7 or the rotary drum 8 is received by the water receiving groove 18 and spreads over the entire length of the bowl-shaped channel 4 while the water is discharged from the bowl-shaped channel 4. It is configured to be introduced between the brush bundles 2 a in the bowl-shaped channel 4 through the holes 17.
[0045]
Between the brush bundles 2a, a rough density portion of the brush material 2 is formed by the intervention of the claw piece 6. By facing this coarse density portion and the water discharge hole 17, the channel 4 through the water discharge hole 17 is introduced into the channel 4. Good water flow.
[0046]
Further, as shown in FIGS. 9 to 12, as another embodiment, a number of water discharge holes (first through holes) that penetrate the bottom plate 21 of the bowl-shaped channel 4 over the longitudinal direction on the bottom face of the bowl-shaped channel 4 forming the channel-shaped brush 1 described above. (2 water discharge hole group) 17 is opened, and on the other hand, a water guide groove 23 is formed on the bus bar on the outer peripheral surface of the rotary shaft 7 or the rotary drum 8, and a number of water discharge holes (first water discharge holes) are formed along the length of the bottom surface of the water guide groove 23 The hole group) 10 and 14 are opened, and the opening surface of the outer periphery of the shaft 7 or the drum 8 of the water guide groove 23 is closed by the channel brush 1 to form a tubular water guide path.
[0047]
The cooling water discharged from the first water discharge hole groups 10 and 14 of the rotary shaft 7 or the rotary drum 8 as described above is introduced into the water guide groove (tubular water guide channel) 23, and the cooling water in the tubular water guide channel 23 is further introduced. 11 is introduced into the bowl-shaped channel 4 through the second water discharge hole group 17 opened at the bottom of the bowl-shaped channel 4.
[0048]
A plurality of the water guide grooves 23 are arranged at equal intervals in the circumferential direction of the rotary shaft 7 or the rotary drum 8. A water discharge channel 24 is fitted into the water supply groove 23 over substantially the entire length of the water supply groove 23, and a large number of small diameter water discharge holes 25 having a smaller diameter and a smaller pitch than the water discharge holes 10 and 14 are drilled in the water discharge channel 24. To do.
[0049]
The water discharge channel 24 is formed by bending a flat strip into a curved channel as shown in the figure, and fitting the curved water discharge channel 24 so as to be convex on the opening surface side of the water guide groove 23. The top surface of 24 is set to a height that makes the same circular locus as the peripheral surface of the shaft 7 or the drum 8.
[0050]
Then, the small-diameter water discharge hole 25 penetrating the inner and outer surfaces over the length of the top surface of the curved water discharge channel 24 is opened. By fitting the curved water discharge channel 24 into the water guide groove 23, an internal water guide groove 23a is formed on the inner surface side of the curved water discharge channel 24 so as to open the water discharge holes 10 and 14. A pair of left and right external water guide grooves 23 b extending in the longitudinal direction are formed on the outer surface side of the water discharge channel 24.
[0051]
The internal water guiding groove 23a is closed by the curved water discharge channel 24 and the bottom surface of the water guiding groove 23 to form a tubular water channel. On the other hand, the outer water guide groove 23 b is defined between the left and right inclined surfaces of the curved water discharge channel 24 and the left and right inner surfaces of the water guide groove 23.
[0052]
The channel-type brush 1 wound tightly and spirally around the outer peripheral surface of the shaft 7 or the drum 8 is wound while pressing the top surface of the curved water discharge channel 24, and the external water guide groove 23 b, that is, the water guide groove 23. The opening surface is closed to form a tubular water conduit.
[0053]
The water guide groove 23 extends in parallel with the axis of the drum 8 or the shaft 7, and both ends in the axial direction are closed to make the water transfer efficient.
[0055]
When the curved water discharge channel 24 is fitted in the water guide groove 23, the cooling water 11 discharged from the water discharge holes 10 and 14 into the internal water supply groove 23a and further discharged through the small diameter water discharge hole 25 is bowl-shaped. In addition to being introduced into the channel 4 through the water discharge hole 17 on the bottom surface of the channel 4, the remaining cooling water 11 is introduced and retained in the external water guide groove 23 b, and the cooling water 11 passes through the water discharge hole 17 on the bottom surface of the bowl-shaped channel 4. Introduced into channel 4.
[0056]
As described above, the water discharge hole 17 shown in each embodiment is a long hole having an elliptical shape in the longitudinal direction of the channel as shown by a broken line in FIG. 2C, so that the bottom surface of the brush bundle 2a including the space between the brush bundles 2a is formed. The cooling water 11 can be passed.
[0057]
Similarly, as shown in FIGS. 1B and 2B, the water receiving groove 18 in each embodiment presses both ends of the bowl-shaped channel 4 constituting the channel-shaped brush 1 from both sides to close the side plate 5, and FIG. In this case, both ends of the stand 20 are closed and closed by closing the side plates 5. Therefore, hair removal from both ends of the channel 4 is prevented, and both ends of the water receiving groove 18 are closed at both ends of the bowl-shaped channel 4 to effectively prevent the cooling water 11 from flowing out from both ends of the water receiving groove 18. The cooling water is efficiently introduced from the water groove 18 to the water discharge hole 17.
[0058]
【The invention's effect】
The rotating roll brush according to the present invention promotes the discharge of the cooling water from the water discharge hole opened at the outer peripheral surface of the rotating shaft or the rotating drum, and the bowl-shaped channel spirally wound the cooling water around the rotating shaft or the rotating drum. Introduced into the channel, water flows as uniformly as possible to the brush material held in the same channel, thereby improving the cooling effect of the brush material and effectively preventing thermal embrittlement of the brush material. It is possible to effectively prevent the brush material from being broken.
[Brief description of the drawings]
FIG. 1A is a cross-sectional view of a channel-type brush used for a rotating roll brush, and B is a cross-sectional view taken along the line AA.
FIG. 2A is a cross-sectional view of another type of channel-type brush used for a rotating roll brush, FIG. 2B is a bottom view thereof, and FIG. 2C shows a state in which a bowl-shaped channel forming the channel-type brush is expanded in a flat plate shape. The top view and D are perspective views of the channel-type brush with the brush material omitted.
FIG. 3 is a longitudinal sectional view of a coil brush.
4 is a longitudinal sectional view of a rotating roll brush formed by spirally winding the channel-type brush shown in FIG. 1 around a rotating shaft.
5 is a longitudinal sectional view of a rotating roll brush formed by spirally winding the channel-type brush shown in FIG. 2 around a rotating shaft.
6 is a longitudinal sectional view of a rotary roll brush obtained by spirally winding the channel-type brush shown in FIG. 2 on a rotary drum extrapolated to the rotary shaft.
7 is a longitudinal sectional view of a rotating roll brush obtained by spirally winding the channel-type brush shown in FIG. 2 on a rotating drum having rotating shafts at both ends.
8A is an enlarged cross-sectional view of the rotary roll brush shown in FIG. 4, and B is an enlarged cross-sectional view of the rotary roll brush shown in FIGS. 5, 6, and 7. FIG.
9 is a longitudinal sectional view of a rotating roll brush in which a water guide groove is provided in the rotating shaft or the rotating drum and the channel-type brush shown in FIG. 2 is spirally wound.
10 is a cross-sectional view of the rotating roll brush of FIG.
FIG. 11 is an enlarged cross-sectional view of a water guide groove portion in FIG.
12 is a perspective view of a curved water discharge channel fitted in the water guide groove. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Channel-shaped brush, 1 '... Coil brush, 2 ... Brush material, 2a ... Brush bundle, 3 ... Core material, 3a ... Wire material, 3b ... Bi-fold plate, 4 ... Gutter-shaped channel, 5 ... Left and right side plate, 6 DESCRIPTION OF SYMBOLS ... Claw piece, 7 ... Rotating shaft, 8 ... Rotating drum, 9 ... Rotating shaft, 10 ... Shaft water discharge hole, 11 ... Cooling water, 12 ... Water passage, 13 ... Ring interval, 14 ... Drum water discharge hole, 15 ... Water passage Pipe, 16 ... Pipe water discharge hole, 17 ... Channel water discharge hole, 18 ... Water receiving groove, 19 ... Closure part, 20 ... Stand, 21 ... Bottom plate, 22 ... Spot welding, 23 ... Water conveyance groove, 23a ... Internal water conveyance groove, 23b ... external water channel, 24 ... curved water discharge channel, 25 ... small-diameter water discharge hole

Claims

A channel-shaped brush is formed by sandwiching and holding the base of the brush material with a hook-shaped channel, and the channel-shaped brush is spirally wound around the outer peripheral surface of the rotating shaft or the outer peripheral surface of the rotating drum with the hook-shaped channel. A large number of water discharge holes (first water discharge hole group) are opened on the outer peripheral surface of the rotary shaft or rotary drum, and the cooling water discharged from the first water discharge hole group by the rotational centrifugal force of the rotary shaft or rotary drum is discharged. In the rotary roll brush that discharges toward the bowl-shaped channel, a plurality of water discharge holes (second water discharge hole group) that can penetrate the bottom plate of the bowl-shaped channel over the bottom surface of the bowl-shaped channel that forms the channel-shaped brush. ) On the other hand, a water guide groove is formed on the bus bar on the outer peripheral surface of the rotary shaft or rotary drum, and the first water discharge hole group is opened over the length of the bottom surface of the water guide groove. The above water guide groove arranged plural rows at equal intervals in the circumferential direction of the rotating shaft or a rotating drum, so as to be convex song water discharge channel substantially over the entire length of the water conducting grooves in the electrically water groove in the opening surface side of the water guide groove A tubular water conduit that is closed by the water discharge channel and the bottom surface of the water guide groove is formed by the internal fitting of the water discharge channel, penetrates the inner and outer surfaces over the length of the top surface of the water discharge channel, and the first channel. A large number of small-diameter water discharge holes having a smaller diameter and a smaller pitch than the water discharge hole group, and the cooling water discharged from the first water discharge hole group of the rotary shaft or the rotary drum is discharged into the annular conduit, and further A rotating roll brush characterized in that cooling water discharged through a small-diameter water discharge hole is introduced into the hook-shaped channel through the second water discharge hole group of the hook-shaped channel.