JP4294891B2

JP4294891B2 - Operation control method and apparatus for triaxial dust dispenser

Info

Publication number: JP4294891B2
Application number: JP2001230898A
Authority: JP
Inventors: 浩司江崎; 靖裕末岡; 善則後藤; 裕二貝原
Original assignee: 三菱重工環境エンジニアリング株式会社
Priority date: 2001-07-31
Filing date: 2001-07-31
Publication date: 2009-07-15
Anticipated expiration: 2021-07-31
Also published as: JP2003042425A

Description

【０００１】
【発明の属する技術分野】
本発明は、左右の供給スクリュー軸の運転制御に対応させて中間軸の運転制御を変え、かつ停止パターンを付加して中間軸を運転制御する３軸式給塵機の運転制御方法及びその装置に関する。
【０００２】
【従来の技術】
３軸式給塵機は特開平１０−１９２１９号公報に開示されているが、本発明に適用される３軸式給塵機を図３に示す。
即ち、図３（Ａ）に示すようにホッパー１下側に位置するケーシング入口部２ｃ及び該入口部２ｃより出口側まで延在する閉鎖空間となっている天井付きケーシング２内に左右の供給スクリュー軸３を配置するとともに、両供給スクリュー軸３の間に突起等が付設された中間軸４を配置して、モータ及び連動手段（図示省略）により両供給スクリュー軸３、３を互いに逆方向に回転駆動し、別のモータ（図示省略）により中間軸４を正逆繰り返し回転駆動しつつ、中間軸４によりホッパー１内のごみ等ａを解砕等して、両供給スクリュー軸３、３へ交互に繰り込み、両供給スクリュー軸３、３によりごみ等を搬送して後続装置へ供給する構造になっている。
【０００３】
【発明が解決しようとする課題】
かかる構成の３軸式給塵機は、前記のように中間軸の正逆回転によりごみを分配しながら左右の供給スクリュー軸へ交互に繰り込み、搬送することにより、供給安定性能を高めた構造に特徴を有しているが、供給スクリュー軸の回転駆動と中間軸の正逆繰り返し回転駆動とが個別に行われ、図３の（Ｂ）及び（Ｃ）に示すように供給スクリュー軸３、３のスクリュー羽根３ａによりごみ等の圧密部ａ１が天井付きケーシング２の始点部２ａ直前に形成され、その圧密部ａ１に新たにごみ等ａの流入圧が加わると、圧密の起点となりこれが継続されると圧密部位が広がりブリッジ発生気味となり、供給スクリュー軸３へのごみ等ａの飲み込み悪化の一因となる。また、供給スクリュー軸３がその摩擦抵抗トルクにより回転数が低下、もしくは停止する恐れが生じ、供給安定性能が低下する。さらに、供給スクリュー軸３の回転に無駄な動力を費やし軸摩耗の一因となるのみならず後続装置（焼却炉等）の運転に支障をきたす恐れがある、などの課題がある。
ごみ等ａの圧密はホッパ１下部の入口部２ｃより飲込まれたごみ等ａがケーシング２の天井に入り込む部位、即ちスクリュー羽根３ａとケーシング２の天井縁との幾何学的に交差する部位に発生し、この点を圧密部ａ１と定義する。
【０００４】
本発明は、前記のような課題に対処するために開発されたものであり、中間軸の運転条件を供給スクリュー軸１８０°の回転時間≦中間軸正逆回転周期とし、更に好ましくは右回転―停止―左回転―停止の繰り返し制御パターンとして運転制御信号により運転制御することにより、運転制御性能、供給安定性能を高めた３軸式給塵機の運転制御方法及びその運転制御装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明において、請求項１記載の発明は、ホッパー下側のケーシング内に設けた左右の供給スクリュー軸と、該供給スクリュー軸の間に配置した中間軸とを備え、中間軸の正逆回転により左右の供給スクリュー軸にごみを繰り込み、両供給スクリュー軸により、前記ホッパー下側よりごみ搬送方向下流側の天井付きケーシング内にごみを搬送する３軸式給塵機において、
前記中間軸の正逆回転周期（時間）を、供給スクリュー軸１８０°の回転時間≦中間軸正逆回転周期に設定するとともに、該中間軸の正逆回転周期の間に停止時期を設け、右回転―停止―左回転―停止の繰り返し回転制御パターンとし、
中間軸の正逆回転周期の間に停止時期がホッパ下部の入口部より飲込まれたごみがケーシングの天井に入り込む部位若しくはその直前位置に対応して、設定されていることを特徴とする。
【０００６】
具体的には、供給スクリュー軸の運転制御に応じ中間軸に対して正逆回転及び停止の運転制御を行うとともに、中間軸の回転運動によりホッパーから供給スクリュー軸へと繰り込まれたごみ等が搬送されて上部が開口せずに閉鎖状態となるケーシングの天井始点部前に達し圧密部が形成され始めると、中間軸を停止パターンとして上流側における供給スクリューへのごみ繰り込みを一旦中止し、前記の圧密部が天井始点より下流側に入ると、再度中間軸を正逆いずれかに回転させる制御パターンとして運転制御する。
【０００７】
従って本発明は、基本的に供給スクリュー軸の運転条件に応じて、中間軸の正逆回転及び停止の運転条件を変更可能とするとともに、供給スクリュー軸により搬送中のごみ等が、ホッパー下部のケーシング入口部を除くケーシング本体の天井始点前に達し圧密部が形成され始めると中間軸が停止パターンとなり、中間軸回転によるごみ等の積極的な流入が回避され、前記の圧密部がケーシング天井始点より下流側に入ると、再度中間軸が正逆何れかの回転制御パターンに運転制御され、中間軸による供給スクリュー軸へのごみ等の繰り込みが円滑に行われるとともに、供給スクリュー軸によるごみ等の搬送が円滑に行われて、供給安定性能が効果的に高められる。
【０００８】
また本発明によれば、前記の停止パターンと中間軸周期及び制御パターンからなる中間軸の運転制御信号により、供給スクリュー軸によって搬送中のごみ等がケーシングの天井始点直前位置に達し圧密部が形成され始めると、中間軸が停止パターンとなりごみ等の積極的な流入が回避され、前記の圧密部が天井始点より下流側に入ると中間軸が回転制御パターンとなり中間軸による供給スクリュー軸へのごみ等の繰り込みが円滑に行われて、総合的に前記の運転制御方法と同様な搬送性能、信頼性が得られる。
【０００９】
請求項２記載の発明は、ホッパー下側のケーシング内に設けた左右の供給スクリュー軸と、該供給スクリュー軸の間に配置した中間軸とを備え、中間軸の正逆回転により左右の供給スクリュー軸にごみを繰り込み、両供給スクリュー軸により、前記ホッパー下側よりごみ搬送方向下流側の天井付きケーシング内にごみを搬送する３軸式給塵機において、
前記中間軸の正逆回転周期（時間）を、供給スクリュー軸１８０°の回転時間≦中間軸正逆回転周期に設定するとともに、該中間軸の正逆回転周期の間に停止時期を設け、右回転―停止―左回転―停止の繰り返し回転制御パターンとさせるコントローラーを具備し、
前記コントローラーにおける、中間軸の正逆回転周期の間に停止時期がホッパ下部の入口部より飲込まれたごみがケーシングの天井に入り込む部位若しくはその直前位置に対応して、設定して、中間軸の運転制御信号を出力するコントローラーであることを特徴とする。
【００１０】
前記の発明によれば、コントローラーにより供給スクリュー軸の運転制御信号が出力され、供給スクリュー軸の運転制御に応じ、停止パターンを含む中間軸の運転制御信号が出力されるので、供給スクリュー軸の運転制御に応じて中間軸の運転制御が変えられるとともに、ごみ等の圧密部が天井付きケーシングの天井始点部の直前位置に形成され始めると、中間軸が停止パターンとなり、ごみ等の流入が回避され、前記の圧密部が天井始点より下流側に入ると中間軸が回転制御パターンとなり、供給スクリュー軸へのごみ等の繰り込みが円滑になるなど、前記の運転制御方法と同様な供給安定性能が得られる。
【００１１】
また本発明は、コントローラーにより出力される前記の停止パターンと中間軸周期及び制御パターンからなる中間軸の運転制御信号により、搬送中のごみ等の圧密部が天井付きケーシングの天井始点部直前位置に形成され始めると、中間軸が停止パターンとなりごみ等の積極的な流入が回避され、前記の圧密部が天井始点より下流側に入ると中間軸が回転制御パターンとなり中間軸による供給スクリュー軸へのごみ等の繰り込みが円滑に行われるなど、総合的に前記の運転制御方法と同様な供給安定性能が得られる。
【００１２】
【発明の実施の形態】
以下、本発明を図に示した実施例を用いて詳細に説明する。但し、この実施例に記載される構成部品の寸法、形状、その相対配置などは特に特定的な記載がない限り、この発明の範囲をそれのみに限定する趣旨ではなく単なる説明例に過ぎない。
図１は本発明の一実施例の平面視機構図、図２は中間軸の回転制御特性図である。また、図３は本発明が適用される３軸給塵機の一例を示す縦断機構図（Ａ）、縦断平面図（Ｂ）及び横断平面図（Ｃ）でありこれらの図をもって説明する。
【００１３】
図１に示す本発明の一実施例に係る３軸式給塵機は、ホッパー下側に設けられたケーシング入口部及び該入口部より出口側に延在する天井付きケーシング本体２内にスクリュー羽根３ａ（図３参照）を有する左右の供給スクリュー軸３、３が並行に配置されるとともに、両供給スクリュー軸３、３の間に突起等（図示省略）が付設されている中間軸４が配置されて、両供給スクリュー軸３、３を歯車やスプロケット、チェーン等からなる駆動伝達系１５により連動連結し、モータ１６により駆動伝達系１５を介し両供給スクリュー軸３、３が図示のように互いに逆方向に回転駆動される。また、前記スクリュー軸と独立して駆動制御されるモータ１７により中間軸４が図２に示すように停止パターンＴ２を含む正逆繰り返し回転の運転制御パターンにより運転制御される。さらに、モータ１６及び１７に運転制御信号２０ａ及び２０ｂを出力して両供給スクリュー軸３、３と中間軸４とを運転制御するコントローラー２０（運転制御手段）が付設されている。中間軸４の前記のような運転制御により、ホッパー内のごみ等が適度に解砕等されて左右の供給スクリュー軸３、３のスクリュー溝に交互に繰り込まれ、両供給スクリュー軸３、３の駆動回転によりごみ等が搬送されて後続のごみ処理装置（焼却炉等）へ連続的に供給される構造になっている。
【００１４】
前記３軸式給塵機において、コントローラー２０は、両供給スクリュー軸３、３のモータ１６及び中間軸４のモータ１７を夫々所定のパターンにより駆動運転制御する構成になっている。ごみ処理装置（焼却炉等）から、例えば焼却炉内の計測温度Ｔ℃等がデータとして入力されるとともに、３軸式給塵機の基本パターンとしてその供給スクリュー軸３の回転数Ｎ１（ｒｐｍ）や、中間軸４の回転角度θ°、回転数Ｎ２（ｒｐｍ）、回転時間Ｔ１（ｓｅｃ）さらには停止時間Ｔ２（ｓｅｃ）等がデータとして保存されているテーブルより取り出したデータが入力されて、前記のデータ等に基づきコントローラー２０内で演算して次のような運転制御信号２０ａ及び２０ｂを出力してモータ１６、１７が運転制御される。
【００１５】
前記コントローラー２０において、運転制御信号２０ａは、後続のごみ処理装置（焼却炉等略）における炉内の計測温度Ｔ℃等に基づき演算されてごみ等ａの所要供給量を確保する制御信号とされ、この運転制御信号２０ａによりモータ１６が駆動されて、両供給スクリュー軸３、３が所要の回転数Ｎ１（ｒｐｍ）に運転制御されて、所要量のごみ等が搬送されて後続の処理装置へ供給される。
【００１６】
また、両供給スクリュー軸３、３は、図３に示されるように、回転角度１８０°ごとに、天井付きケーシング２の天井始点部２ａの直前位置でごみ等ａの圧密部が存在することになり、この存在時点では中間軸４の回転を一時的に停止して、ホッパー１からのごみ等ａの積極的な流入を回避させている。即ち本実施例ではこの時点で中間軸４を一時的に停止パターンＴ２にした後、天井始点部２ａを越えて圧密部ａ１が入った時点で運転制御信号２０ｂにより中間軸４を右回転又は左回転の制御パターンにして、天井始点部２ａの直前位置を起点として圧密部ａ１が成長拡大するのを防止することにより、ごみ等ａの流入が円滑になるように運転制御する。
【００１７】
本実施例における中間軸４の制御は、供給スクリュー軸３の回転速度に対応させた適度の停止タイムを確保して停止パターンＴ２とし、図２に示すように例えば右回転Ｔ１―停止Ｔ２―左回転Ｔ１―停止Ｔ２の繰り返し運転制御パターンとしている。また、供給スクリュー軸３の回転数をＮ１（ｒｐｍ）、中間軸４の右、左回転の時間をそれぞれＴ１（ｓｅｃ）及び停止時間をＴ２（ｓｅｃ）とすると、供給スクリュー軸１８０°の回転時間＝６０／（２Ｎ１）、中間軸周期＝２（Ｔ１＋Ｔ２）として表すことができ、６０／（２Ｎ１）≦２（Ｔ１＋Ｔ２）とし、即ち、供給スクリュー軸１８０°の回転時間≦中間軸正逆回転周期、を満足する中間軸４の運転制御信号２０ｂとして演算される。
即ちコントローラー２０により供給スクリュー軸３の運転制御信号２０ａに対応させて演算された前記の運転制御信号２０ｂにより、中間軸４が供給スクリュー軸３の回転駆動に対応した運転制御パターン（右回転Ｔ１―停止Ｔ２―左回転Ｔ１―停止Ｔ２の繰り返し）に運転制御されて、前記のように天井付きケーシング２の天井始点部２ａにおけるごみ等ａの流入が円滑となり、該天井始点部２ａにおけるごみ等ａの圧密部ａ１が格別に増大されずにブリッジ発生が効果的に防止され、ごみ等の所要の搬送、供給量が安定して確保され、後続装置に格別な支障を及ぼさないなど、総合的にごみ等の搬送、供給性能等が著しく高められる。
【００１８】
図示の実施例は前述のようになっており、ホッパー１下側のケーシング入口部２ｃ内に設けた左右の供給スクリュー軸３と、供給スクリュー軸３の間に配置した中間軸４とを備え、中間軸４の正逆繰り返し回転により回転中の左右の供給スクリュー軸３にごみ等ａを交互に繰り込み、両供給スクリュー軸３によりごみ等ａを搬送する３軸式給塵機による供給方法において、供給スクリュー軸３の運転条件に応じて中間軸４を正逆及び停止の運転制御をするとともに、供給スクリュー軸３により搬送中のごみ等ａが天井付きケーシング２の天井始点部２ａ前に達し圧密部ａ１が形成され始めると中間軸４を停止パターンＴ２とし、前記の圧密部が天井始点部２ａ下に入ると中間軸４を回転制御パターンＴ１として運転制御している。
【００１９】
前記の運転制御方法は、基本的に供給スクリュー軸３の運転制御に応じて中間軸４の運転制御が変えられるとともに、供給スクリュー軸３により搬送されるごみ等が天井付きのケーシング本体２の天井始点部２ａ前に達し圧密部が形成され始めると中間軸４が停止パターンＴ２となり、中間軸４によるごみ等ａの積極的な流入が回避され、前記の圧密部が天井始点部２ａより下流側に入ると中間軸４が回転制御パターンＴ１の運転制御となり、中間軸４による供給スクリュー軸３へのごみ等ａの繰り込みが円滑に行われるとともに、供給スクリュー軸３によるごみ等の搬送も円滑に行われて、優れた供給安定性能が得られる。
【００２０】
又本実施例は前記中間軸周期を、右回転Ｔ１―停止Ｔ２―左回転Ｔ１―停止Ｔ２の繰り返し制御パターンとした運転制御信号２０ｂにより、中間軸４を運転制御させているために、前記の停止パターンＴ２と中間軸周期及び制御パターンからなる中間軸４の運転制御信号２０ｂにより、供給スクリュー軸３により搬送中のごみ等ａが天井付きケーシング２の天井始点部２ａ直前に達し圧密部ａ１が形成され始めると、中間軸４が停止パターンＴ２となりごみ等ａの積極的な流入が回避され、前記の圧密部が天井始点部２ａを越えた時点で中間軸４が回転制御パターンＴ１となり中間軸４による供給スクリュー軸３へのごみ等の繰り込みが円滑に行われて、総合的に前記の運転制御方法と同様な供給安定性能が得られる。
【００２１】
【発明の効果】
本発明によれば、中間軸によるごみ等の積極的な流入が回避され、前記の圧密部が天井始点下に入ると中間軸が回転制御パターンとなり、供給スクリュー軸へのごみ等の繰り込みが円滑に行われ、供給スクリュー軸によるごみ等の搬送も円滑に行われて、搬送性能、信頼性が著しく高められる。
【００２２】
更に本発明によると、停止パターンを含む中間軸の正逆回転周期により、供給スクリュー軸により搬送中のごみ等が天井付きケーシングの天井始点直前位置に達し圧密部が形成され始めると、中間軸が停止パターンとなりごみ等の積極的な流入が回避され、前記の圧密部が天井始点より下流側に入ると中間軸が回転制御パターンとなり中間軸による供給スクリュー軸へのごみ等の繰り込みが円滑に行われて、総合的に前記の運転制御方法と同様な搬送性能、信頼性が得られる。
【図面の簡単な説明】
【図１】本発明の一実施例を示す平面視機構図である。
【図２】中間軸の制御パターン図である。
【図３】本発明が適用される３軸給塵機の一例を示す縦断機構図（Ａ）、縦断平面図（Ｂ）及び横断平面図（Ｃ）である。
【符号の説明】
２ケーシング
２ａ天井始点部（天井付きケーシング）
３供給スクリュー軸
４中間軸
１５駆動伝達系
１６、１７モータ
２０コントローラー
２０ａ運転制御信号
２０ｂ運転制御信号
Ｎ１回転数（供給スクリュー軸）
Ｎ２回転数（中間軸）
Ｔ炉内温度
Ｔ１回転数（供給スクリュー軸）
Ｔ２停止時間（中間軸）[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an operation control method and apparatus for a three-shaft dust dispenser that changes the operation control of the intermediate shaft in accordance with the operation control of the left and right supply screw shafts, and controls the operation of the intermediate shaft by adding a stop pattern. About.
[0002]
[Prior art]
A triaxial dust dispenser is disclosed in Japanese Patent Laid-Open No. 10-19219. FIG. 3 shows a triaxial dust dispenser applied to the present invention.
That is, as shown in FIG. 3A, the right and left supply screws are provided in the casing inlet 2c located below the hopper 1 and in the ceiling casing 2 which is a closed space extending from the inlet 2c to the outlet. The shaft 3 is disposed, and the intermediate shaft 4 provided with a protrusion or the like is disposed between the two supply screw shafts 3, and the two supply screw shafts 3, 3 are moved in opposite directions by a motor and interlocking means (not shown). While rotating, the intermediate shaft 4 is rotated forward and backward repeatedly by another motor (not shown), and the dust a in the hopper 1 is crushed by the intermediate shaft 4 to both supply screw shafts 3 and 3. It is constructed such that it is alternately retracted, and dust and the like are conveyed by both supply screw shafts 3 and 3 and supplied to the subsequent apparatus.
[0003]
[Problems to be solved by the invention]
As described above, the three-shaft dust dispenser having such a configuration has a structure in which supply stability performance is improved by alternately feeding and transporting dust to the left and right supply screw shafts while distributing dust by forward and reverse rotation of the intermediate shaft as described above. Although it has the feature, the rotation drive of the supply screw shaft and the forward / reverse rotation drive of the intermediate shaft are separately performed, and as shown in FIGS. When the screw blade 3a forms a compacted portion a1 such as dust immediately before the start point 2a of the ceiling-equipped casing 2, and when a new inflow pressure of dust or the like is added to the compacted portion a1, this becomes a starting point of compaction and continues. As a result, the compacted portion spreads and a bridge appears to be generated, which causes aggravation of swallowing of dust such as dust into the supply screw shaft 3. Further, the rotation speed of the supply screw shaft 3 may be reduced or stopped due to the frictional resistance torque, and the supply stability performance is deteriorated. Furthermore, there is a problem that unnecessary power is consumed for rotation of the supply screw shaft 3, which not only contributes to shaft wear but also may hinder the operation of a subsequent device (such as an incinerator).
The compaction of the dust etc. a is at the part where the dust etc. a taken in from the inlet 2c at the lower part of the hopper 1 enters the ceiling of the casing 2, that is, the part where the screw blade 3a and the ceiling edge of the casing 2 geometrically intersect. This point is defined as a consolidated portion a1.
[0004]
The present invention has been developed to address the above-described problems, and the operation condition of the intermediate shaft is such that the rotation time of the supply screw shaft 180 ° ≦ the intermediate shaft forward / reverse rotation cycle, and more preferably clockwise rotation— To provide an operation control method and an operation control device for a three-shaft dust dispenser with improved operation control performance and supply stability performance by performing operation control with an operation control signal as a stop-left rotation-stop repeated control pattern. With the goal.
[0005]
[Means for Solving the Problems]
In the present invention, the invention described in claim 1 is provided with left and right supply screw shafts provided in a casing below the hopper, and an intermediate shaft disposed between the supply screw shafts, by forward and reverse rotation of the intermediate shaft. influences the garbage renormalization to feed screw axis, the two feed screw shaft, in three shaft-type paper dust machine for conveying the garbage in the hopper lower than dust conveying direction downstream side of the ceiling with the casing,
The forward / reverse rotation cycle (time) of the intermediate shaft is set so that the rotation time of the supply screw shaft 180 ° ≦ the intermediate shaft forward / reverse rotation cycle, and a stop timing is provided between the forward / reverse rotation cycles of the intermediate shaft, Rotation-stop-left rotation-stop repeated rotation control pattern,
During the forward and reverse rotation cycles of the intermediate shaft, the stop timing is set corresponding to the portion where the dust swallowed from the inlet portion at the lower part of the hopper enters the ceiling of the casing or the position just before that.
[0006]
Specifically, in accordance with the operation control of the supply screw shaft, forward / reverse rotation and stop operation control is performed with respect to the intermediate shaft, and dust or the like transferred from the hopper to the supply screw shaft by the rotational motion of the intermediate shaft. When reaching the ceiling start point of the casing that is conveyed and closed without opening the upper part, and starting to form a compacted part, the intermediate shaft is used as a stop pattern to temporarily stop the dust feeding to the supply screw on the upstream side, When the compacted portion enters the downstream side from the ceiling start point, the operation is controlled as a control pattern in which the intermediate shaft is rotated either forward or backward again.
[0007]
Therefore, according to the present invention, the operating conditions for forward / reverse rotation and stop of the intermediate shaft can be changed basically according to the operating conditions of the supply screw shaft, and dust or the like being conveyed by the supply screw shaft can be changed in the lower part of the hopper. When reaching the ceiling start point of the casing body excluding the casing inlet and starting to form a compacted part, the intermediate shaft becomes a stop pattern, and positive inflow of dust and the like due to the intermediate shaft rotation is avoided, and the compacted part is the casing ceiling start point. When entering the downstream side, the intermediate shaft is again controlled to operate in either the forward or reverse rotation control pattern, so that the intermediate shaft smoothly feeds dust into the supply screw shaft, and the The conveyance is performed smoothly, and the supply stability performance is effectively enhanced.
[0008]
Further, according to the present invention , due to the operation control signal of the intermediate shaft composed of the stop pattern, the intermediate shaft period, and the control pattern, dust or the like being conveyed by the supply screw shaft reaches the position immediately before the ceiling start point of the casing to form a consolidated portion. When the operation starts, the intermediate shaft becomes a stop pattern and positive inflow of dust and the like is avoided, and when the above-mentioned compaction part enters the downstream side from the ceiling start point, the intermediate shaft becomes a rotation control pattern and the intermediate shaft receives dust from the supply screw shaft. Etc. are smoothly carried out, and the conveyance performance and reliability similar to those of the operation control method can be obtained comprehensively.
[0009]
The invention according to claim 2 includes left and right supply screw shafts provided in a casing below the hopper, and an intermediate shaft disposed between the supply screw shafts, and the left and right supply screws are rotated by forward and reverse rotation of the intermediate shaft. axis the garbage renormalization, by both the feed screw shaft, in three shaft-type paper dust machine for conveying the garbage in the hopper lower than dust conveying direction downstream side of the ceiling with the casing,
The forward / reverse rotation cycle (time) of the intermediate shaft is set so that the rotation time of the supply screw shaft 180 ° ≦ the intermediate shaft forward / reverse rotation cycle, and a stop timing is provided between the forward / reverse rotation cycles of the intermediate shaft, It has a controller that makes a rotation control pattern of rotation-stop-left rotation-stop repeatedly,
In the controller, the intermediate shaft is set to correspond to the position where the dust swallowed from the inlet portion at the lower part of the hopper enters the ceiling of the casing or the position immediately before it during the forward / reverse rotation cycle of the intermediate shaft. It is a controller which outputs the operation control signal of.
[0010]
According to the above invention, the operation control signal of the supply screw shaft is output by the controller, and the operation control signal of the intermediate shaft including the stop pattern is output according to the operation control of the supply screw shaft. The operation control of the intermediate shaft is changed according to the control, and when the compacted part such as dust starts to form at a position immediately before the ceiling start point of the ceiling casing, the intermediate shaft becomes a stop pattern, and the inflow of dust and the like is avoided. When the consolidated part enters the downstream side from the ceiling start point, the intermediate shaft becomes a rotation control pattern, and the supply stability performance similar to the operation control method described above is obtained, such as the smooth transfer of dust to the supply screw shaft. It is done.
[0011]
The present invention, co by the stop pattern and the intermediate shaft driving control signal consisting of the intermediate shaft cycle and control pattern outputted by the Controller, the ceiling start portion immediately before the consolidation of the dust in the transport ceilings with casing When it starts to be formed at the position, the intermediate shaft becomes a stop pattern and positive inflow of dust and the like is avoided, and when the above-mentioned compaction part enters the downstream side from the ceiling start point, the intermediate shaft becomes a rotation control pattern and the supply screw shaft by the intermediate shaft A stable supply performance similar to that of the above-described operation control method can be obtained, for example, the retraction of waste and the like smoothly.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, unless otherwise specified, the dimensions, shapes, relative arrangements, and the like of the components described in this embodiment are merely illustrative examples and not intended to limit the scope of the present invention.
FIG. 1 is a plan view mechanism diagram of one embodiment of the present invention, and FIG. 2 is a rotation control characteristic diagram of an intermediate shaft. FIG. 3 is a longitudinal mechanism diagram (A), a longitudinal plan view (B), and a transverse plan view (C) showing an example of a triaxial dust feeder to which the present invention is applied.
[0013]
A triaxial dust dispenser according to an embodiment of the present invention shown in FIG. 1 includes a casing blade provided at the lower side of a hopper and a screw blade in a casing body 2 with a ceiling extending from the inlet to the outlet side. Left and right supply screw shafts 3 and 3 having 3a (see FIG. 3) are arranged in parallel, and an intermediate shaft 4 provided with protrusions (not shown) between the supply screw shafts 3 and 3 is arranged. Then, both supply screw shafts 3 and 3 are interlocked and connected by a drive transmission system 15 comprising gears, sprockets, chains, etc., and both supply screw shafts 3 and 3 are mutually connected via a drive transmission system 15 by a motor 16 as shown in the figure. It is rotationally driven in the reverse direction. Further, as shown in FIG. 2, the motor 17 is driven and controlled independently of the screw shaft, and the intermediate shaft 4 is controlled in accordance with an operation control pattern of forward and reverse repeated rotation including a stop pattern T2. Further, a controller 20 (operation control means) is provided for outputting operation control signals 20a and 20b to the motors 16 and 17 to control the operation of both the supply screw shafts 3, 3 and the intermediate shaft 4. By the operation control of the intermediate shaft 4 as described above, the dust in the hopper is appropriately crushed and alternately fed into the screw grooves of the left and right supply screw shafts 3, and the both supply screw shafts 3, 3 In this structure, waste is transported by the driving rotation and continuously supplied to a subsequent waste treatment apparatus (incinerator or the like).
[0014]
In the three-axis dust dispenser, the controller 20 is configured to control the driving operation of the motor 16 of both the supply screw shafts 3 and 3 and the motor 17 of the intermediate shaft 4 according to a predetermined pattern. For example, the measured temperature T ° C. in the incinerator is input as data from a waste treatment device (incinerator, etc.), and the rotation speed N1 (rpm) of the supply screw shaft 3 as a basic pattern of the triaxial dust feeder Or, the rotation angle θ ° of the intermediate shaft 4, the rotation speed N2 (rpm), the rotation time T1 (sec), the stop time T2 (sec), etc. are input from the data stored from the table stored as data, Based on the above data and the like, the operation is controlled in the controller 20, and the following operation control signals 20a and 20b are output to control the motors 16 and 17.
[0015]
In the controller 20, the operation control signal 20 a is a control signal that is calculated based on the measured temperature T ° C. in the furnace in a subsequent waste treatment device (abbreviated as an incinerator or the like) and secures a required supply amount of waste a. Then, the motor 16 is driven by the operation control signal 20a, and the supply screw shafts 3 and 3 are operation controlled to the required rotational speed N1 (rpm), and the required amount of dust and the like are conveyed to the subsequent processing apparatus. Supplied.
[0016]
Further, as shown in FIG. 3, both supply screw shafts 3 and 3 have a compacted portion such as dust at a position immediately before the ceiling start point 2 a of the casing 2 with a ceiling at every rotation angle of 180 °. Thus, at this point in time, the rotation of the intermediate shaft 4 is temporarily stopped to prevent the positive inflow of dust and the like from the hopper 1. That is, in this embodiment, after the intermediate shaft 4 is temporarily set to the stop pattern T2 at this time, the intermediate shaft 4 is rotated to the right or left by the operation control signal 20b when the consolidation portion a1 enters beyond the ceiling start point 2a. By controlling the rotation pattern to prevent the consolidation part a1 from growing and expanding starting from the position immediately before the ceiling starting point part 2a, operation control is performed so that the inflow of dust or the like becomes smooth.
[0017]
The control of the intermediate shaft 4 in the present embodiment secures an appropriate stop time corresponding to the rotational speed of the supply screw shaft 3 and sets it as a stop pattern T2. As shown in FIG. 2, for example, right rotation T1-stop T2-left It is a repetitive operation control pattern of rotation T1-stop T2. Also, assuming that the rotation speed of the supply screw shaft 3 is N1 (rpm), the right and left rotation times of the intermediate shaft 4 are T1 (sec), and the stop time is T2 (sec), the rotation time of the supply screw shaft 180 ° = 60 / (2N1), intermediate shaft period = 2 (T1 + T2), 60 / (2N1) ≦ 2 (T1 + T2), that is, rotation time of supply screw shaft 180 ° ≦ intermediate axis forward / reverse rotation cycle Are calculated as the operation control signal 20b of the intermediate shaft 4 that satisfies the above.
In other words, the operation control signal 20b calculated by the controller 20 in correspondence with the operation control signal 20a of the supply screw shaft 3 causes the intermediate shaft 4 to operate in accordance with the rotation drive of the supply screw shaft 3 (right rotation T1- The operation is controlled to stop T2-left rotation T1-stop T2), and as described above, the inflow of dust etc. at the ceiling start point 2a of the ceiling-mounted casing 2 becomes smooth, and the dust etc. a at the ceiling start point 2a The compaction part a1 is not significantly increased, bridges are effectively prevented, the required transport of waste, etc., a stable supply amount is ensured, and there is no particular hindrance to subsequent devices. The conveyance and supply performance of garbage etc. are remarkably improved.
[0018]
The illustrated embodiment is as described above, and includes left and right supply screw shafts 3 provided in a casing inlet 2c below the hopper 1, and an intermediate shaft 4 disposed between the supply screw shafts 3, In a supply method using a three-shaft dust supply device in which dust and the like are alternately transferred to the rotating left and right supply screw shafts 3 by forward and reverse rotation of the intermediate shaft 4 and the dust and the like are conveyed by both supply screw shafts 3, The intermediate shaft 4 is controlled to forward and reverse and stop according to the operating conditions of the supply screw shaft 3, and dust or the like being conveyed by the supply screw shaft 3 reaches the ceiling start point 2 a of the ceiling casing 2 and is consolidated. When the portion a1 starts to be formed, the intermediate shaft 4 is set as the stop pattern T2, and when the compacted portion enters the ceiling start point 2a, the intermediate shaft 4 is controlled as the rotation control pattern T1.
[0019]
In the operation control method described above, the operation control of the intermediate shaft 4 is basically changed in accordance with the operation control of the supply screw shaft 3, and the dust or the like conveyed by the supply screw shaft 3 is ceiling of the casing body 2 with a ceiling. When reaching the start point 2a and starting to form a compacted portion, the intermediate shaft 4 becomes the stop pattern T2, and positive inflow of dust and the like by the intermediate shaft 4 is avoided, and the compacted portion is downstream of the ceiling start point 2a. When entering, the intermediate shaft 4 becomes the operation control of the rotation control pattern T1, and the intermediate shaft 4 smoothly feeds dust and the like into the supply screw shaft 3, and also smoothly conveys dust and the like by the supply screw shaft 3. Done, excellent supply stability performance is obtained.
[0020]
In this embodiment, since the intermediate shaft 4 is operated and controlled by the operation control signal 20b in which the intermediate shaft period is a repetitive control pattern of right rotation T1-stop T2-left rotation T1-stop T2. By the operation control signal 20b of the intermediate shaft 4 composed of the stop pattern T2, the intermediate shaft period and the control pattern, the dust etc. being conveyed by the supply screw shaft 3 reaches just before the ceiling start point 2a of the casing 2 with the ceiling, and the consolidation portion a1 When the formation starts, the intermediate shaft 4 becomes the stop pattern T2, and positive inflow of dust or the like is avoided, and when the compaction portion exceeds the ceiling start point 2a, the intermediate shaft 4 becomes the rotation control pattern T1 and the intermediate shaft 4 is smoothly transferred to the supply screw shaft 3 and the same stable supply performance as in the operation control method is obtained.
[0021]
【The invention's effect】
According to the present invention, positive inflow of dust and the like by the intermediate shaft is avoided, and when the compacted portion enters below the ceiling start point, the intermediate shaft becomes a rotation control pattern, and the retraction of dust and the like to the supply screw shaft is smooth. Thus, the conveyance of dust and the like by the supply screw shaft is also smoothly performed, and the conveyance performance and reliability are remarkably improved.
[0022]
Further, according to the present invention, when the dust or the like being conveyed by the supply screw shaft reaches the position immediately before the ceiling start point of the ceiling-equipped casing due to the forward / reverse rotation cycle of the intermediate shaft including the stop pattern, the intermediate shaft Stopping pattern prevents positive inflow of dust and the like, and when the above-mentioned consolidated part enters the downstream side from the ceiling start point, the intermediate shaft becomes a rotation control pattern and the intermediate shaft smoothly feeds dust etc. to the supply screw shaft. As a result, the same conveyance performance and reliability as those of the operation control method are obtained.
[Brief description of the drawings]
FIG. 1 is a plan view mechanism diagram showing an embodiment of the present invention.
FIG. 2 is a control pattern diagram of an intermediate shaft.
FIG. 3 is a longitudinal sectional view (A), a longitudinal plan view (B) and a transverse plan view (C) showing an example of a triaxial dust feeder to which the present invention is applied.
[Explanation of symbols]
2 Casing 2a Ceiling start point (casing with ceiling)
3 Supply screw shaft 4 Intermediate shaft 15 Drive transmission system 16, 17 Motor 20 Controller 20a Operation control signal 20b Operation control signal N1 Number of revolutions (supply screw shaft)
N2 speed (intermediate shaft)
T Furnace temperature T1 Number of revolutions (supply screw shaft)
T2 Stop time (intermediate axis)

Claims

ホッパー下側のケーシング内に設けた左右の供給スクリュー軸と、該供給スクリュー軸の間に配置した中間軸とを備え、中間軸の正逆回転により左右の供給スクリュー軸にごみを繰り込み、両供給スクリュー軸により、前記ホッパー下側よりごみ搬送方向下流側の天井付きケーシング内にごみを搬送する３軸式給塵機において、
前記中間軸の正逆回転周期（時間）を、供給スクリュー軸１８０°の回転時間≦中間軸正逆回転周期に設定するとともに、該中間軸の正逆回転周期の間に停止時期を設け、右回転―停止―左回転―停止の繰り返し回転制御パターンとし、
中間軸の正逆回転周期の間に停止時期がホッパ下部の入口部より飲込まれたごみがケーシングの天井に入り込む部位若しくはその直前位置に対応して、設定されていることを特徴とする３軸式給塵機の運転制御方法。And left and right feed screw shaft provided on the hopper bottom side of the casing, and an intermediate shaft which is disposed between the feed screw shaft, the garbage renormalization on the left and right of the feed screw shaft by forward and reverse rotation of the intermediate shaft, both the feed screw shaft, in three shaft-type paper dust machine for conveying the garbage in the hopper lower than dust conveying direction downstream side of the ceiling with the casing,
The forward / reverse rotation cycle (time) of the intermediate shaft is set so that the rotation time of the supply screw shaft 180 ° ≦ the intermediate shaft forward / reverse rotation cycle, and a stop timing is provided between the forward / reverse rotation cycles of the intermediate shaft, Rotation-stop-left rotation-stop repeated rotation control pattern,
The stop timing is set corresponding to the position where the dust swallowed from the inlet portion at the lower part of the hopper enters the ceiling of the casing or the position immediately before the stop timing during the forward / reverse rotation cycle of the intermediate shaft. Operation control method for shaft type dust dispenser.

ホッパー下側のケーシング内に設けた左右の供給スクリュー軸と、該供給スクリュー軸の間に配置した中間軸とを備え、中間軸の正逆回転により左右の供給スクリュー軸にごみを繰り込み、両供給スクリュー軸により、前記ホッパー下側よりごみ搬送方向下流側の天井付きケーシング内にごみを搬送する３軸式給塵機において、
前記中間軸の正逆回転周期（時間）を、供給スクリュー軸１８０°の回転時間≦中間軸正逆回転周期に設定するとともに、該中間軸の正逆回転周期の間に停止時期を設け、右回転―停止―左回転―停止の繰り返し回転制御パターンとさせるコントローラーを具備し、
前記コントローラーにおける、中間軸の正逆回転周期の間に停止時期がホッパ下部の入口部より飲込まれたごみがケーシングの天井に入り込む部位若しくはその直前位置に対応して、設定して、中間軸の運転制御信号を出力するコントローラーであることを特徴とする３軸式給塵機の運転制御装置。And left and right feed screw shaft provided on the hopper bottom side of the casing, and an intermediate shaft which is disposed between the feed screw shaft, the garbage renormalization on the left and right of the feed screw shaft by forward and reverse rotation of the intermediate shaft, both the feed screw shaft, in three shaft-type paper dust machine for conveying the garbage in the hopper lower than dust conveying direction downstream side of the ceiling with the casing,
The forward / reverse rotation cycle (time) of the intermediate shaft is set so that the rotation time of the supply screw shaft 180 ° ≦ the intermediate shaft forward / reverse rotation cycle, and a stop timing is provided between the forward / reverse rotation cycles of the intermediate shaft, It has a controller that makes a rotation control pattern of rotation-stop-left rotation-stop repeatedly,
In the controller, the intermediate shaft is set to correspond to the position where the dust swallowed from the inlet portion at the lower part of the hopper enters the ceiling of the casing or the position immediately before it during the forward / reverse rotation cycle of the intermediate shaft. An operation control device for a three-axis dust collector, wherein the operation control signal is a controller that outputs the operation control signal.