JP3793151B2 - Bucket elevator residual powder collection device - Google Patents

Bucket elevator residual powder collection device Download PDF

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Publication number
JP3793151B2
JP3793151B2 JP2002364656A JP2002364656A JP3793151B2 JP 3793151 B2 JP3793151 B2 JP 3793151B2 JP 2002364656 A JP2002364656 A JP 2002364656A JP 2002364656 A JP2002364656 A JP 2002364656A JP 3793151 B2 JP3793151 B2 JP 3793151B2
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Prior art keywords
discharge chamber
casing
hopper
bucket elevator
receiving
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JP2004196450A (en
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一士 松前
三也 保
祐二 中村
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東亜機械工業株式会社
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Description

【0001】
【発明の属する技術分野】
本発明は、多数のバケットを用いて粉粒物を高所に揚送移動させるバケットエレベータにおいて、バケットからこぼれ落ちてケーシング底部に残留する粉粒物を回収するバケットエレベータの残留粉粒物回収装置に関するものである。
【0002】
【従来の技術】
従来より、筒状に形成した長尺のケーシング内に、上下一対のスプロケット又はプーリを設け、両方のスプロケット又はプーリに無端状のコンベアチェーン又はベルトを巻回し、該コンベアチェーン又はプーリに多数のバケットを取付け、ケーシング下部に設けた投入ホッパーから投入された粉粒物を揚送してケーシング上部に設けた取出しダクトから取り出すバケットエレベータが実用されている。
【0003】
この種のバケットエレベータによる粉粒物の揚送作業では、バケットからこぼれ落ちた粉粒物がケーシング底部に残留する。
【0004】
このケーシング底部に残留する粉粒物を残したままで、異なる種類の粉粒物を揚送すると、異なる種類の粉粒物が互いに混合したりすることが起きる。
【0005】
また、ケーシング底部に残留する粉粒物が長期間に亘って残されると、腐敗の原因にもなるので、粉粒物の品種変えの度にケーシング底部に残留する粉粒物の除去が求められる。そこで、ケーシング底部に残留する粉粒物を回収して有効利用するために、さまざまな提案がなされている。
【0006】
その一つに、ケーシング底部に排出口を設け、該排出口の下方にあってケーシング底部に対し、引出し式に抜差し自在に受け箱を配装し、該受け箱の上面開放口とケーシング底部の排出口との間にシャッター板を抜差し自在に設けた構成のものがある。(例えば、特許文献1参照)。
【0007】
この構成のものは、バケットエレベータの通常運転による粉粒物の揚送作業時には、ケーシング底部の排出口をシャッター板によって閉塞して粉粒物の揚送作業を行うと、バケットからこぼれ落ちた粉粒物はシャッター板上に残留し、この残留粉粒物は、揚送作業が終ってからシャッター板を抜き取ってケーシング底部の排出口から受け箱内に落下させ、この粉粒物の入った受け箱をケーシング底部から抜き出して受け箱ごと回収場所まで搬出して粉粒物の回収を行うものである。
【0008】
【特許文献1】
実開昭62−5111号公報。
【0009】
【発明が解決しようとする課題】
ところが、上記のようにケーシング底部に残留する粉粒物を受け箱に収容して受け箱ごと粉粒物の回収を行うものは、ケーシング底部に対する受け箱の出し入れや、ケーシング底部と受け箱との間でのシャッター板の抜き差し、また、粉粒物の入った受け箱をケーシング底部から抜き出して回収場所まで搬出して粉粒物を回収したりするには、作業員の人手に頼るところが大きく、しかも、これらの作業は、狭隘な場所での作業を強いられるので、多大の労力と時間を必要とし、作業現場は、粉塵の飛散も甚だしく、労働衛生上からも好ましいものではない。
【0010】
また、設備面からは、ケーシング底部に対する受け箱を出し入れや、シャッター板の抜き差し、また、粉粒物の入った受け箱を外部に搬出するための作業空間等を必要とするため、これが装置の設置スペースを拡大する原因になっている。
【0011】
さらに、ケーシング底部下方に受け箱を配装する構成は、バケットエレベータの粉粒物の有効揚送高さを短縮する。
【0012】
そこで、本発明は、人手に頼ることなく、ケーシング底部に残留する粉粒物をケーシング外へきれいに排出して同一輸送先へ送給して効率よく回収することができるバケットエレベータの残留粉粒物回収装置を提供することを目的としたものである。
【0013】
【課題を解決するための手段】
上記するような課題を解決するために、第1の発明に係るバケットエレベータの残留粉粒物回収装置は、筒状に形成した長尺のケーシング内で多数のバケットを一方向に循環移動させ、粉粒物を揚送するバケットエレベータにおいて、前記ケーシング底部に排出室を形成し、該排出室上面にケーシング底部を開口させ、該ケーシング底部開口に対応して排出室内に受け板を配装し、排出室前部を受けホッパーを介してローターロックに連結し、受け板上面から排出室底面を経て粉粒物を受けホッパー向けに押送する粉粒物押送手段を配装し、受けホッパーの反対側で排出室内に、ノズルを介して高圧空気を排出室内に噴出するエアブラシを配装したことを特徴とする。
【0014】
このように構成した本発明によれば、通常のバケットエレベータの運転時に、バケットからこぼれ落ちた粉粒物は受け板上に残留する。この受け板上からの粉粒物の排出は、粉粒物押送手段を作動させて受け板上面から排出室底面を経て受けホッパーに押送して落とし込ませ、受けホッパー内に落ち込んだ粉粒物は、受けホッパー内のローターロックを介して外部空気輸送手段によって取り出されて同一輸送先へ送給して回収される。
【0015】
この際、受け板によって受け板下に仕切られる排出室内は、受けホッパーを介してローターロックに連通しているので、この排出室内には、ローターロックから粉粒物を排出する際の負圧が掛かり、排出室内に受けホッパー向けに空気流が生じ、この空気流は、粉粒物押送手段による粉粒物の押送を促進するとともに、排出室内にあって受け板回りや粉粒物押送手段等に付着する粉粒物の剥離を効果的に行って排出にもっていかれる。
【0016】
従って、本発明によれば、ケーシング底部に残留する粉粒物を、排出室の大きさ等に関係なく、きれいに排出できて効率よく回収することができる。
【0017】
また、受けホッパーの反対側で排出室内に、ノズルを介して高圧空気を排出室内に噴出するエアブラシを配装した構成としているので、ノズルからは、受け板によって受け板下に仕切られる排出室内に対して高圧空気が噴出され、この空気流は、ローターロックから粉粒物を排出する際の負圧の下に排出室内に生じる空気流に合流し、排出室内を受けホッパー向けに移動する粉粒物の移動を促進するとともに、排出室内にあって各部に付着する粉粒物の剥離性も向上する。
【0018】
また、第2の発明に係るバケットエレベータの残留粉粒物回収装置は、筒状に形成した長尺のケーシング内で多数のバケットを一方向に循環移動させ、粉粒物を揚送するバケットエレベータにおいて、前記ケーシング底部に排出室を形成し、該排出室上面にケーシング底部を開口させ、該ケーシング底部開口に対応して排出室内に受け板を配装し、排出室前部を受けホッパーを介してローターロックに連結し、受け板上面から排出室底面を経て粉粒物を受けホッパー向けに押送する粉粒物押送手段を配装し、ケーシング底部の前後壁に、ケーシング底部開口向けに抜き差し自在に傾斜誘導板を配装したことを特徴とする。
【0019】
ケーシング底部は、排出室に対して全面的に開口してケーシング底部開口を形成している。このままでは、バケットエレベータの運転中に受け板上に残留する粉粒物は、開口各部の広い範囲に分散して残留するので、その排出作業が円滑に行われないことがある。そこで、ケーシング底部の前後壁に、ケーシング底部開口向けに抜き差し自在に傾斜誘導板を配装した構成にすることで、通常のバケットエレベータの運転時には、両方の傾斜誘導板をケーシング内に差し込んで両方の傾斜誘導板の下端縁間隔を適切に設定しておくと、これで受け板上に残留する粉粒物の幅が決まって粉粒物は両方の傾斜誘導板上に掛けて残留する。
【0020】
従って、この状態から粉粒物の排出を行えば、両方の傾斜誘導板上からは、受け板に対して押送板の動きに見合った量の粉粒物がむらなく供給(落下)され、効率よく粉粒物を排出することができる。なお、両方の傾斜誘導板上に粉粒物がなくなった時点で、両方の傾斜誘導板を抜いてケーシング外に退出させると、両方の傾斜誘導板に付着している粉粒物もきれいに排除できるので、ケーシング底部及び排出室内に残留する粉粒物はきれいに取り除かれる。
【0021】
前記構成において、排出室を扁平状に形成して前後両端部をケーシング底部開口の外に突出させ、受け板はケーシング底部開口部をカバーして排出室の前後両端部近くまで延び、粉粒物押送手段は、受け板を横切る方向に支持され、且つ、受け板の両端部で回転方向を変更して無端回動し、受け板上面と排出室底面に摺接移動して粉粒物を受けホッパー向けに押送する複数の押送板を備える構成とするのが好ましい。
【0022】
この場合、押送板による受け板上に残留する粉粒物の押送は、受け板の内端縁が受け板上面に摺接移動して行われ、粉粒物は受け板端部に達して排出室底面に落下し、この排出室底面に落下した粉粒物は、無端回動で回転方向を変更してきた押送板の外端縁が排出室底面に摺接移動して押送が行われて受けホッパーに落とし込まれる。
【0023】
従って、受け板上面から排出室底面を経て受けホッパーに押送される粉粒物量は、粉粒物押送手段の運転制御により、受けホッパー内からローターロックを介して外部空気輸送手段により外部に連続的に取り出される粉粒物量をバランスさせることで、粉粒物を効率よく回収することができる
【0024】
また、排出室を扁平状に形成したことにより、設備面からは、ケーシング底部下方には、排出室と、この排出室前部に受けホッパーを介して連結したローターロックの設置スペースを確保すればよいので、装置の設置スペースの有効利用が図られる。また、バケットエレベータの粉粒物の有効揚送高さを高くすることができる。
【0025】
また、受け板上から排出室底面を経て受けホッパーまでの粉粒物の押送は、受け板上面と排出室底面に押送板の内外両端縁が摺接移動して粉粒物を押送するので、受け板上面と排出室底面を常にきれいな状態に保つことができ、押送板は円滑な動作を実現する。
【0026】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて具体的に説明する。
【0027】
図1は本発明の実施の形態を示すバケットエレベータの要部を示す概略正面図である。
【0028】
図において、バケットエレベータ1は、筒状に形成した長尺のケーシング2内で、多数のバケット3を装着したベルト4を一方向に循環移動可能に懸回状に収納し、ケーシング2の下部側壁に、粉粒物が投入される投入ホッパー5を設け、ケーシング2の上部には、図示はしていないが揚送粉粒物を取り出す取出ダクトが設けてあって、このダクト先端を取出しコンベア装置に臨ませている。
【0029】
なお、本発明に係るバケットエレベータ1の主要構成は、従来のこの種のバケットエレベータと同じである。
【0030】
本発明においては、ケーシング2の底部に排出ケース6を連設して扁平状の排出室7を形成し、この排出室7上面にケーシング底部を開口8させ、また、排出室7内に、ケーシング底部開口8に対応して受け板9を設けている。
【0031】
実施の形態では、排出室7を前後方向に横長に形成して両端部をケーシング底部開口8の外側に突出させ、受け板9はケーシング底部開口8をカバーして排出室7の前後両端部近くまで延び、排出室7の前部は、受けホッパー10を介してローターロック11に連結している。
【0032】
排出室7内に、受け板上面9aから排出室底面7aに掛けて粉粒物Aを受けホッパー10向けに押送する粉粒物押送手段12を配装している。実施の形態の粉粒物押送手段12は、受け板9の前後両端部に対応して回転軸13,14を設け、受け板9の両側でそれぞれの回転軸13,14に前後一対のスプロケット15,16を取着し、対をなすスプロケット15,16に無端状チェーン17を巻回し、受け板9を横切る方向に複数の押送板18を配し、それぞれの押送板18の両端をチェーン17に支持させ、一方の回転軸14を外部回転駆動源19に連結したもので、チェーン17の回動で押送板18は受け板9の両端部で回転方向を変更して無端回動し、受け板上面9aと排出室底面7aに摺接移動して受け板9上からの粉粒物Aを受けホッパー10向けに押送するようにしている。
【0033】
前記ローターロック11は、配管11aを介して外部空気輸送手段(図示せず)に接続している。ここで使用される外部空気輸送手段には、ローターロック11を含め、実用的には汎用の製品が適用され、ローターロック11と配管11aを介して接続した吸引用ロータリーブロワーと吸引用レシーバー(図示せず)とを備える構成とし、排出室7内からローターロック11を介して吸引空気によって配管11aに取り出された粉粒物Aを、目的の場所まで的確に空気輸送して粉粒物Aの回収が行われるようにしている。
【0034】
受けホッパー10の反対側で排出室7内に、高圧空気を噴出するエアブラシ20を配装している。実施の形態のエアブラシ20は、排出室7内にあって排出室底面7aに向けられたノズル21を有し、このノズル21を外部高圧空気供給源(図示せず)に連結したもので、ノズル21から吹き出される高圧の空気流は、受け板9によって受け板9下に仕切られる排出室7内で、ローターロック11から粉粒物Aを排出する際の負圧の下に生じる空気流に合流し、排出室7内を受けホッパー10向けに移動する粉粒物Aの移動を促進し、同時に、排出室7内にあって各部に付着する粉粒物Aの剥離性も向上するものである。
【0035】
ケーシング底部の前後壁2aに対向的に、抜き差し自在に傾斜誘導板22を配装している。実施の形態の傾斜誘導板22は、ケーシング底部の前後壁2aに、ケーシング底部開口8の中央部に向けて傾斜するガイド部材23を設け、このガイド部材23に抜き差し自在に支持されており、傾斜誘導板22がケーシング2内に差し込まれて最下降位置を採る状態で、両方の誘導板22の下端縁がケーシング底部開口8の中央部で受け板9に最接近し、両方の下端縁間隔を最小にし、この位置から両方の傾斜誘導板22を引き抜いてケーシング2内から退出させた状態では、受け板9に対してケーシング底部開口8を全開させるものである。
【0036】
上記構成において、バケットエレベータ1が運転される時は、取り扱われる粉粒物Aの種類にもよるが、傾斜誘導板22をケーシング2内に差し込み、両方の誘導板22の下端縁間隔を適切な間隔に設定しておかれる。
【0037】
バケットエレベータ1が運転されてバケット3からこぼれ落ちた粉粒物Aは、図示のように、両方の傾斜誘導板22に誘導されて両方の傾斜誘導板22の隙間から受け板9上に落下して積もり始めて両方の傾斜誘導板22上に掛けて残留する。
【0038】
この粉粒物Aを排出する時は、粉粒物押送手段12の外部回転駆動源19の駆動でチェーン17を回動させると、受け板上面9aに押送板18が摺接移動して受け板9上の粉粒物Aを受け板9の端部まで押送し、排出室底面7aに落下させる。引き続き、この粉粒物Aを排出室底面7aを摺接移動する押送板18が受けホッパー10向けに押送して受けホッパー10に落とし込ませる。
【0039】
また、ここで、受け板9により受け板9下に仕切られる排出室7内には、ローターロック11から粉粒物Aを排出する際の負圧が掛かって受けホッパー10向けに空気流を生じ、この空気流には、受けホッパー10の反対側に配装したエアブラシのノズル21から吹き出されて生じる空気流が合流し、受けホッパー10に向けての粉粒物Aの移動を促進するばかりでなく、排出室7内にあって受け板9回りや粉粒物押送手段12等に付着する粉粒物Aも効果的に剥離して排出にもっていかれる。
【0040】
こうして、受けホッパー10内に落ち込んだ粉粒物Aは、受けホッパー10内のローターロック11を介して外部空気輸送手段により取り出され、配管11aを介して所定の回収場所、例えば、バケットエレベータ1が普通に運転されて揚送後の粉粒物の押送経路に空気輸送して回収される。
【0041】
また、ケーシング内に差し込まれている傾斜誘導板22も、最終的には、これを引き抜き、ケーシング内から退出させて傾斜誘導板22に付着する粉粒物Aも排除して粉粒物Aの排出作業を終了する。
【0042】
なお、図中24は、受けホッパー10上方に配装され、受けホッパー10内に異常滞留する粉粒物Aを検知するセンサーで、この検知センサー24と粉粒物押送手段12の外部回転駆動源19との間に制御装置(図示せず)を接続し、受けホッパー10内に所定量を超えて粉粒物Aが異常滞留する時に、これを検知センサー24が電気的に検知し、この検知信号によって粉粒物押送手段12の外部回転駆動源19を自動停止させるものである。
【0043】
【発明の効果】
本発明は、以上説明したような形態で実施され、第1の明によれば、受けホッパーの反対側で排出室内に、ノズルを介して高圧空気を排出室内に噴出するエアブラシを配装した構成としているので、ノズルからは、受け板によって受け板下に仕切られる排出室内に対して高圧空気が噴出され、この空気流は、ローターロックから粉粒物を排出する際の負圧の下に排出室内に生じる空気流に合流し、排出室内を受けホッパー向けに移動する粉粒物の移動を促進するとともに、排出室内にあって各部に付着する粉粒物の剥離性も向上する。
【0044】
また、第2の発明によれば、ケーシング底部の前後壁に、ケーシング底部開口向けに抜き差し自在に傾斜誘導板を配装した構成にしているので、通常のバケットエレベータの運転時には、両方の傾斜誘導板をケーシング内に差し込んで両方の傾斜誘導板の下端縁間隔を適切に設定しておくと、これで受け板上に残留する粉粒物の幅が決まって粉粒物は両方の傾斜誘導板上に掛けて残留する。従って、この状態から粉粒物の排出を行えば、両方の傾斜誘導板上からは、受け板に対して押送板の動きに見合った量の粉粒物がむらなく供給(落下)され、効率よく粉粒物を排出することができる。
【図面の簡単な説明】
【図1】本発明の実施の形態を示すバケットエレベータの下部を断面で示す正面図である。
【符号の説明】
1 バケットエレベータ
2 ケーシング
2a 前後壁
3 バケット
4 ベルト
5 投入ホッパー
6 排出ケース
7 排出室
7a 排出室底面
8 ケーシング底部開口
9 受け板
9a 受け板上面
10 受けホッパー
11 ローターロック
11a 配管
12 粉粒物押送手段
13 回転軸
14 回転軸
15 スプロケット
16 スプロケット
17 無端状チェーン
18 押送板
19 外部回転駆動源
20 エアブラシ
21 ノズル
22 傾斜誘導板
23 ガイド部材
22 粉粒物押送手段
24 検知センサー
A 粉粒物
[0001]
BACKGROUND OF THE INVENTION
[Technical Field] The present invention relates to a bucket elevator residual powder collection device for collecting powder particles spilled from a bucket and remaining on the bottom of a casing in a bucket elevator that lifts and moves powder particles to a high place using a large number of buckets. Is.
[0002]
[Prior art]
Conventionally, a pair of upper and lower sprockets or pulleys are provided in a long casing formed in a cylindrical shape, and an endless conveyor chain or belt is wound around both sprockets or pulleys, and a number of buckets are wound around the conveyor chain or pulley. A bucket elevator is put into practical use in which a granular material charged from a charging hopper provided in the lower part of the casing is lifted and taken out from an extraction duct provided in the upper part of the casing.
[0003]
In the lifting operation of the granular material by this type of bucket elevator, the granular material spilled from the bucket remains at the bottom of the casing.
[0004]
When different types of powder are transported while leaving the powder remaining at the bottom of the casing, different types of powder may be mixed with each other.
[0005]
In addition, if the granular material remaining on the bottom of the casing is left over a long period of time, it may cause rot. Therefore, it is required to remove the granular material remaining on the bottom of the casing every time the type of the granular material is changed. . Therefore, various proposals have been made in order to collect and effectively use the powder particles remaining at the bottom of the casing.
[0006]
As one of them, a discharge port is provided at the bottom of the casing, and a receiving box is provided below the discharge port so as to be detachable with respect to the bottom of the casing. There is a configuration in which a shutter plate is detachably provided between the outlet and the outlet. (For example, refer to Patent Document 1).
[0007]
In this configuration, when the granular material is lifted by the normal operation of the bucket elevator, if the granular material is lifted by closing the discharge port at the bottom of the casing with the shutter plate, the granular particles spilled from the bucket The material remains on the shutter plate, and this residual powder is removed from the shutter plate after the lifting operation is finished and dropped into the receiving box from the outlet at the bottom of the casing. Is taken out from the bottom of the casing and is taken out to the collection place together with the receiving box to collect the particulate matter.
[0008]
[Patent Document 1]
Japanese Utility Model Publication No. 62-5111.
[0009]
[Problems to be solved by the invention]
However, as described above, the granular material remaining in the bottom of the casing is received in the receiving box and the granular material is collected together with the receiving box. In order to remove the shutter plate between them, and to pull out the receiving box containing the powder particles from the bottom of the casing and carry it to the collection place to collect the powder particles, it is highly dependent on the hands of the workers, In addition, since these operations are forced to be performed in a narrow place, they require a great deal of labor and time, and the work site is very dusty and is not preferable from the viewpoint of occupational health.
[0010]
In addition, from the standpoint of equipment, this requires a working space for taking in and out the receiving box with respect to the bottom of the casing, inserting and removing the shutter plate, and carrying out the receiving box containing powdered particles to the outside. This is a cause of expanding the installation space.
[0011]
Furthermore, the structure which arrange | positions a receiving box below a casing bottom part shortens the effective pumping height of the granular material of a bucket elevator.
[0012]
Therefore, the present invention is a bucket elevator residual powder that can be efficiently collected by discharging the powder remaining on the bottom of the casing to the outside of the casing and feeding it to the same transport destination without relying on human hands. The object is to provide a recovery device.
[0013]
[Means for Solving the Problems]
In order to solve the above-described problems, the bucket elevator residual powder collection device according to the first invention circulates and moves a large number of buckets in one direction in a long casing formed in a cylindrical shape, In the bucket elevator that lifts the granular material, a discharge chamber is formed in the bottom of the casing, the bottom of the casing is opened on the top of the discharge chamber, and a receiving plate is disposed in the discharge chamber corresponding to the opening of the bottom of the casing. The front part of the discharge chamber is connected to the rotor lock via the hopper, and the powder material feeding means for receiving the powder material and feeding it to the hopper from the upper surface of the receiving plate through the bottom surface of the discharge chamber is arranged on the opposite side of the receiving hopper. In the discharge chamber, an air brush that jets high-pressure air into the discharge chamber through a nozzle is arranged .
[0014]
According to the present invention configured as described above, during the operation of a normal bucket elevator, the particulate matter spilled from the bucket remains on the backing plate. Discharge of the granular material from the receiving plate is performed by operating the granular material pushing means to push it down from the upper surface of the receiving plate to the receiving hopper through the bottom surface of the discharge chamber, and then fall into the receiving hopper. Is taken out by an external pneumatic transport means through a rotor lock in the receiving hopper, and sent to the same transport destination and collected.
[0015]
At this time, since the discharge chamber partitioned by the receiving plate below the receiving plate communicates with the rotor lock via the receiving hopper, negative pressure is generated in the discharge chamber when discharging the particulate matter from the rotor lock. An air flow is generated in the discharge chamber toward the receiving hopper, and this air flow promotes the feeding of the powder by the powder feeding means, and also around the receiving plate and the powder feeding means in the discharge chamber. The powder particles adhering to the surface are effectively peeled off and discharged.
[0016]
Therefore, according to the present invention, the particulate matter remaining at the bottom of the casing can be discharged cleanly and can be efficiently recovered regardless of the size of the discharge chamber.
[0017]
In addition, since the air brush that jets high-pressure air into the discharge chamber through the nozzle is arranged in the discharge chamber on the opposite side of the receiving hopper, the nozzle is arranged in the discharge chamber partitioned under the receiving plate by the receiving plate. On the other hand, high-pressure air is jetted, and this air flow merges with the air flow generated in the discharge chamber under the negative pressure when discharging the powder particles from the rotor lock, and receives the discharge chamber and moves to the hopper The movement of the object is promoted, and the releasability of the particulate matter in the discharge chamber and adhering to each part is improved.
[0018]
Further, the bucket elevator residual particulate matter collecting apparatus according to the second invention is a bucket elevator that circulates and moves a large number of buckets in one direction in a long casing formed in a cylindrical shape and lifts the particulate matter. A discharge chamber is formed at the bottom of the casing, the bottom of the casing is opened at the top of the discharge chamber, a receiving plate is disposed in the discharge chamber corresponding to the opening of the bottom of the casing, and the front of the discharge chamber is received via a hopper. It is connected to the rotor lock, and it is equipped with a powder material feeding means that receives the powder material from the top surface of the receiving plate through the bottom surface of the discharge chamber and pushes it to the hopper, and can be inserted into and removed from the front and rear walls of the casing bottom portion to open the casing bottom portion. An inclined guide plate is arranged on the top.
[0019]
The casing bottom part opens entirely to the discharge chamber to form a casing bottom part opening. In this state, the powder particles remaining on the backing plate during the operation of the bucket elevator remain dispersed in a wide range of each part of the opening, so that the discharge operation may not be performed smoothly. Therefore, by constructing the tilt guide plates on the front and rear walls of the casing bottom so that they can be freely inserted and removed toward the opening of the casing bottom, both the tilt guide plates are inserted into the casing during normal bucket elevator operation. If the lower end edge interval of the inclined guide plate is set appropriately, the width of the powder particles remaining on the receiving plate is determined by this, and the powder particles remain on both inclined guide plates.
[0020]
Therefore, if the particulate matter is discharged from this state, the amount of the particulate matter commensurate with the movement of the feed plate is supplied (dropped) to the receiving plate from both of the inclined guide plates, and the efficiency is improved. It is possible to discharge fine particles. In addition, when there are no more granular materials on both of the inclined guide plates, if both of the inclined guide plates are pulled out and moved out of the casing, the powder particles adhering to both of the inclined guide plates can be removed cleanly. Therefore, the granular material remaining in the casing bottom and the discharge chamber is removed cleanly.
[0021]
In the above-mentioned configuration, the discharge chamber is formed in a flat shape, both front and rear ends protrude outside the casing bottom opening, and the backing plate covers the casing bottom opening and extends to near both front and rear ends of the discharge chamber. The pushing means is supported in a direction crossing the backing plate, and is rotated endlessly by changing the rotation direction at both ends of the backing plate, and is slidably moved between the top surface of the backing plate and the bottom surface of the discharge chamber to receive the particulate matter. It is preferable to have a configuration including a plurality of feed plates that feed to the hopper.
[0022]
In this case, the powder particles remaining on the receiving plate by the feeding plate are moved by sliding the inner edge of the receiving plate to the upper surface of the receiving plate, and the particles reach the end of the receiving plate and are discharged. The powder particles that fall to the bottom of the chamber and fall to the bottom of the discharge chamber are received by the outer edge of the push plate, which has been rotated endlessly and moved in sliding contact with the bottom of the discharge chamber. Dropped into the hopper.
[0023]
Therefore, the amount of the granular material pushed to the receiving hopper from the upper surface of the receiving plate through the bottom surface of the discharge chamber is continuously controlled from the inside of the receiving hopper to the outside by the external air transportation means through the rotor lock by the operation control of the granular material feeding means. By balancing the amount of the granular material taken out, the granular material can be efficiently recovered .
[0024]
In addition, by forming the discharge chamber in a flat shape, from the facility side, if the installation space for the rotor lock connected to the discharge chamber and the front of the discharge chamber via a receiving hopper is secured below the bottom of the casing As a result, it is possible to effectively use the installation space of the apparatus. Moreover, the effective lifting height of the granular material of a bucket elevator can be made high.
[0025]
In addition, the feeding of the granular material from the receiving plate through the discharge chamber bottom to the receiving hopper, the inner and outer edges of the feeding plate slide and move to the receiving plate upper surface and the discharge chamber bottom, so that the granular material is pushed. The upper surface of the receiving plate and the bottom surface of the discharge chamber can be kept clean at all times, and the push plate realizes a smooth operation.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0027]
FIG. 1 is a schematic front view showing a main part of a bucket elevator showing an embodiment of the present invention.
[0028]
In the figure, a bucket elevator 1 accommodates a belt 4 equipped with a large number of buckets 3 in a suspending manner so as to circulate and move in one direction in a long casing 2 formed in a cylindrical shape. In addition, a feeding hopper 5 into which powder particles are charged is provided, and an upper portion of the casing 2 is provided with a take-out duct (not shown) for taking out the lifted powder particles. To face.
[0029]
The main configuration of the bucket elevator 1 according to the present invention is the same as that of a conventional bucket elevator of this type.
[0030]
In the present invention, a discharge case 6 is connected to the bottom of the casing 2 to form a flat discharge chamber 7, and the casing bottom is opened 8 on the upper surface of the discharge chamber 7. A receiving plate 9 is provided corresponding to the bottom opening 8.
[0031]
In the embodiment, the discharge chamber 7 is formed horizontally long in the front-rear direction so that both ends protrude outside the casing bottom opening 8, and the receiving plate 9 covers the casing bottom opening 8 and is close to both front and rear ends of the discharge chamber 7. The front portion of the discharge chamber 7 is connected to the rotor lock 11 via the receiving hopper 10.
[0032]
In the discharge chamber 7, powder material feeding means 12 for receiving the powder material A and feeding it toward the hopper 10 from the receiving plate upper surface 9 a to the discharge chamber bottom surface 7 a is arranged. The granular material pushing means 12 of the embodiment is provided with rotating shafts 13 and 14 corresponding to both front and rear end portions of the receiving plate 9, and a pair of front and rear sprockets 15 on each rotating shaft 13 and 14 on both sides of the receiving plate 9. , 16 is wound, endless chain 17 is wound around paired sprockets 15, 16, a plurality of feed plates 18 are arranged in a direction crossing receiving plate 9, and both ends of each feed plate 18 are connected to chain 17. One of the rotating shafts 14 is connected to an external rotational drive source 19, and the pusher plate 18 rotates endlessly by changing the direction of rotation at both ends of the receiving plate 9 by rotating the chain 17. The powder A is slidably moved to the upper surface 9a and the discharge chamber bottom surface 7a to receive and send the powder A from the receiving plate 9 toward the hopper 10.
[0033]
The rotor lock 11 is connected to an external pneumatic transport means (not shown) through a pipe 11a. The external pneumatic transport means used here includes practically general-purpose products including the rotor lock 11, and a suction rotary blower and a suction receiver connected to the rotor lock 11 via a pipe 11a (see FIG. The granular material A taken out from the discharge chamber 7 through the rotor lock 11 to the pipe 11a by the suction air is accurately transported by air to the target place to thereby form the granular material A. Collection is performed.
[0034]
An air brush 20 that ejects high-pressure air is disposed in the discharge chamber 7 on the opposite side of the receiving hopper 10. The airbrush 20 of the embodiment has a nozzle 21 in the discharge chamber 7 and directed to the discharge chamber bottom surface 7a, and this nozzle 21 is connected to an external high-pressure air supply source (not shown). The high-pressure air flow blown out from 21 is converted into an air flow generated under a negative pressure when the powder A is discharged from the rotor lock 11 in the discharge chamber 7 partitioned by the receiving plate 9 below the receiving plate 9. It joins and promotes the movement of the granular material A that moves toward the hopper 10 in the discharge chamber 7, and at the same time improves the peelability of the granular material A that is in the discharge chamber 7 and adheres to each part. is there.
[0035]
An inclined guide plate 22 is arranged so as to be freely inserted and removed from the front and rear walls 2a at the bottom of the casing. The inclination guide plate 22 of the embodiment is provided with a guide member 23 that is inclined toward the center of the casing bottom opening 8 on the front and rear walls 2a of the casing bottom, and is supported by the guide member 23 so as to be freely inserted and removed. In a state where the guide plate 22 is inserted into the casing 2 and takes the lowest position, the lower end edges of both guide plates 22 are closest to the receiving plate 9 at the center of the casing bottom opening 8 and the distance between the lower end edges is increased. In a state in which both of the inclined guide plates 22 are pulled out from this position and are retracted from the casing 2, the casing bottom opening 8 is fully opened with respect to the receiving plate 9.
[0036]
In the above configuration, when the bucket elevator 1 is operated, depending on the type of the powder A to be handled, the inclined guide plate 22 is inserted into the casing 2 and the lower end edge distance between both guide plates 22 is set appropriately. Set to interval.
[0037]
The granular material A spilled from the bucket 3 when the bucket elevator 1 is operated is guided to both inclined guide plates 22 and falls onto the receiving plate 9 from the gap between both inclined guide plates 22 as shown in the figure. It starts to pile up and remains on both inclined guide plates 22.
[0038]
When discharging the granular material A, when the chain 17 is rotated by the drive of the external rotation drive source 19 of the granular material feeding means 12, the feeding plate 18 is slidably moved on the receiving plate upper surface 9a and the receiving plate is moved. The granular material A on 9 is pushed to the end of the receiving plate 9 and dropped onto the discharge chamber bottom surface 7a. Subsequently, the feeding plate 18 slidably moving on the bottom surface 7 a of the discharge chamber pushes the powder A into the receiving hopper 10 and drops it into the receiving hopper 10.
[0039]
Here, in the discharge chamber 7 partitioned by the receiving plate 9 below the receiving plate 9, a negative pressure is applied when discharging the powder A from the rotor lock 11, and an air flow is generated toward the receiving hopper 10. In this air flow, the air flow generated by blowing out from the nozzle 21 of the airbrush arranged on the opposite side of the receiving hopper 10 joins, and only the movement of the powder A toward the receiving hopper 10 is promoted. In addition, the granular material A in the discharge chamber 7 and adhering to the periphery of the receiving plate 9 and the granular material pushing means 12 is also effectively peeled off and discharged.
[0040]
Thus, the particulate matter A that has fallen into the receiving hopper 10 is taken out by the external air transporting means via the rotor lock 11 in the receiving hopper 10, and a predetermined collection place, for example, the bucket elevator 1 is connected via the pipe 11a. It is normally operated and recovered by pneumatic transportation to the feed path of the powder after lifting.
[0041]
In addition, the inclined guide plate 22 inserted into the casing is finally pulled out, and the granular material A that is pulled out of the casing and adheres to the inclined guide plate 22 is also excluded. Finish the discharge operation.
[0042]
In the figure, reference numeral 24 denotes a sensor that is arranged above the receiving hopper 10 and detects the powder A that abnormally stays in the receiving hopper 10, and is an external rotational drive source for the detection sensor 24 and the powder feeding means 12. 19 is connected to a control device (not shown), and when the particulate matter A abnormally stays in the receiving hopper 10 exceeding a predetermined amount, the detection sensor 24 electrically detects this, and this detection The external rotation drive source 19 of the powder material pushing means 12 is automatically stopped by a signal.
[0043]
【The invention's effect】
The present invention is implemented in the form as described above, according to the first inventions, the receiving discharge chamber on the opposite side of the hopper was HaiSo an airbrush for ejecting high pressure air to the discharge chamber through a nozzle Since it is configured, high-pressure air is ejected from the nozzle into the discharge chamber partitioned by the backing plate under the backing plate, and this air flow is under negative pressure when discharging the particulate matter from the rotor lock. It joins the air flow generated in the discharge chamber and promotes the movement of the powder particles that move toward the hopper in the discharge chamber, and also improves the detachability of the powder particles that adhere to each part in the discharge chamber.
[0044]
According to the second aspect of the invention, since the tilt guide plates are arranged on the front and rear walls of the casing bottom so as to be freely inserted and removed toward the opening of the casing bottom, both the tilt guides are operated during normal bucket elevator operation. If the plate is inserted into the casing and the lower end edge interval of both inclined guide plates is set appropriately, the width of the powder particles remaining on the receiving plate is determined by this, and the powder particles are both inclined guide plates. It remains on top. Therefore, if the particulate matter is discharged from this state, the amount of the particulate matter commensurate with the movement of the feed plate is supplied (dropped) to the receiving plate from both of the inclined guide plates, and the efficiency is improved. It is possible to discharge fine particles.
[Brief description of the drawings]
FIG. 1 is a front view showing a cross section of a lower portion of a bucket elevator showing an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bucket elevator 2 Casing 2a Front and rear wall 3 Bucket 4 Belt 5 Loading hopper 6 Discharging case 7 Discharging chamber 7a Discharging chamber bottom face 8 Casing bottom opening 9 Receiving plate 9a Receiving plate upper surface 10 Receiving hopper 11 Rotor lock 11a Piping 12 Dust feeding means 13 Rotating shaft 14 Rotating shaft 15 Sprocket 16 Sprocket 17 Endless chain 18 Feeding plate 19 External rotation drive source 20 Airbrush 21 Nozzle 22 Tilt guide plate 23 Guide member 22 Powdered material feeding means 24 Detection sensor A Powdered material

Claims (3)

筒状に形成した長尺のケーシング内で多数のバケットを一方向に循環移動させ、粉粒物を揚送するバケットエレベータにおいて、前記ケーシング底部に排出室を形成し、該排出室上面にケーシング底部を開口させ、該ケーシング底部開口に対応して排出室内に受け板を配装し、排出室前部を受けホッパーを介してローターロックに連結し、受け板上面から排出室底面を経て粉粒物を受けホッパー向けに押送する粉粒物押送手段を配装し、受けホッパーの反対側で排出室内に、ノズルを介して高圧空気を排出室内に噴出するエアブラシを配装したことを特徴とするバケットエレベータの残留粉粒物回収装置。In a bucket elevator that circulates and moves a large number of buckets in one direction in a long casing formed in a cylindrical shape, and lifts the granular material, a discharge chamber is formed at the bottom of the casing, and a casing bottom at the top of the discharge chamber A receiving plate is arranged in the discharge chamber corresponding to the opening at the bottom of the casing, and the front portion of the discharge chamber is connected to the rotor lock via the hopper, and the granular material passes from the upper surface of the receiving plate to the bottom surface of the discharge chamber. It is characterized in that a powder / powder feeding means for feeding to the receiving hopper is arranged, and an air brush that jets high-pressure air into the discharge chamber through the nozzle on the opposite side of the receiving hopper is arranged. Bucket elevator residual powder collection device. 筒状に形成した長尺のケーシング内で多数のバケットを一方向に循環移動させ、粉粒物を揚送するバケットエレベータにおいて、前記ケーシング底部に排出室を形成し、該排出室上面にケーシング底部を開口させ、該ケーシング底部開口に対応して排出室内に受け板を配装し、排出室前部を受けホッパーを介してローターロックに連結し、受け板上面から排出室底面を経て粉粒物を受けホッパー向けに押送する粉粒物押送手段を配装し、ケーシング底部の前後壁に、ケーシング底部開口向けに抜き差し自在に傾斜誘導板を配装したことを特徴とするバケットエレベータの残留粉粒物回収装置。 In a bucket elevator that circulates and moves a large number of buckets in one direction in a long casing formed in a cylindrical shape, and lifts the granular material, a discharge chamber is formed at the bottom of the casing, and a casing bottom at the top of the discharge chamber A receiving plate is arranged in the discharge chamber corresponding to the opening at the bottom of the casing, and the front portion of the discharge chamber is connected to the rotor lock via the hopper, and the granular material passes from the upper surface of the receiving plate to the bottom surface of the discharge chamber. Residual powder particles in a bucket elevator, characterized in that a powder- feeding means for feeding the hopper to the hopper is arranged, and inclined guide plates are arranged on the front and rear walls of the casing bottom so as to be freely inserted and removed for opening of the casing bottom. Material collection device. 排出室を扁平状に形成して前後両端部をケーシング底部開口の外に突出させ、受け板はケーシング底部開口部をカバーして排出室の前後両端部近くまで延び、粉粒物押送手段は、受け板を横切る方向に支持され、且つ、受け板の両端部で回転方向を変更して無端回動し、受け板上面と排出室底面に摺接移動して粉粒物を受けホッパー向けに押送する複数の押送板を備えたことを特徴とする請求項1又は2記載のバケットエレベータの残留粉粒物回収装置。 The discharge chamber is formed in a flat shape and both front and rear ends protrude outside the casing bottom opening, the backing plate covers the casing bottom opening and extends to the vicinity of both front and rear ends of the discharge chamber. It is supported in the direction crossing the backing plate, and it rotates endlessly by changing the rotation direction at both ends of the backing plate. The apparatus according to claim 1 or 2, further comprising: a plurality of pushing plates that perform the following operation.
JP2002364656A 2002-12-17 2002-12-17 Bucket elevator residual powder collection device Expired - Lifetime JP3793151B2 (en)

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