JP3830281B2 - Waste supply method and apparatus - Google Patents

Waste supply method and apparatus Download PDF

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Publication number
JP3830281B2
JP3830281B2 JP19488998A JP19488998A JP3830281B2 JP 3830281 B2 JP3830281 B2 JP 3830281B2 JP 19488998 A JP19488998 A JP 19488998A JP 19488998 A JP19488998 A JP 19488998A JP 3830281 B2 JP3830281 B2 JP 3830281B2
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pusher
waste
waiting time
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fall
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JP2000028121A (en
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光幸 山北
洋 白水
卓史 吉田
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Hitachi Zosen Corp
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Hitachi Zosen Corp
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Description

【０００１】
【発明の属する技術分野】
本発明は、廃棄物をホッパーからプッシャーにより焼却炉に送り出す廃棄物の供給方法および装置に関する。
【０００２】
【従来の技術】
従来、図７に示すように、ごみホッパー２１から焼却炉２２に投入する場合、単一または幅方向に並設されたプッシャー２３を出退駆動してごみを定量ずつ供給している。
【０００３】
【発明が解決しようとする課題】
近年、ダイオキシンの発生を防止するという観点から燃焼の安定性を向上させることに重点が置かれてごみ焼却炉が運転されているが、上記構成において、ごみ質が、圧縮性が低く下方に落ちにくい場合、プッシャー２３を後退した時に後退空隙２４にごみが落下せず、次のプッシャー２３の突出移動で所定量のごみを送り出すことができないという問題があった。このような場合、プッシャー２３のサイクル速度を上げても対応することができず、規定量のごみを供給できず、燃焼が不安定になることがあった。
【０００４】
本発明は、上記問題点を解決して、ごみ質に関係なくごみを精度よく安定して供給できる廃棄物の供給方法および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】
上記目的を達成するために本発明の請求項１記載の廃棄物の供給方法は、上下複数段に配置されてそれぞれ出退自在なプッシャーを使用して、ホッパーの下部出口から焼却炉に廃棄物を供給するに際し、下段側プッシャーを突出移動させてごみを送り出す動作と、下段側プッシャーをホッパーの出口内の後退限まで後退移動させる動作と、廃棄物を落下待ちする第１待機時間の間上段側プッシャーを待機させる動作と、後退位置の上段側プッシャーを下段側プッシャーの上面に沿ってその前端部近傍まで突出移動させて、下段側プッシャー上の廃棄物を下段側プッシャーの前部に押し出す動作と、上段側プッシャーを後退限まで後退移動させる動作と、廃棄物を落下待ちする第２待機時間の間下段側プッシャーを待機させる動作とを順次に繰り返して行い、廃棄物の質が落下しやすい高圧縮性の場合には第１待機時間と第２待機時間とをそれぞれ短くし、廃棄物がの質廃棄物が落下しにくい低圧縮性の場合には第１待機時間と第２待機時間とをそれぞれ長くするものである。
【０００６】
また、請求項２記載の廃棄物の供給装置は、ホッパーの下部出口に出退自在に配置されて廃棄物を焼却炉に押出すプッシャーを備えた廃棄物の供給装置であって、プッシャーを上下に複数段に配置するとともに、各プッシャーをそれぞれ出退させる駆動装置を設け、下段側プッシャーを突出移動させてごみを送り出す動作と、下段側プッシャーをホッパーの出口内の後退限まで後退移動させる動作と、廃棄物を落下待ちする第１待機時間の間上段側プッシャーを待機させる動作と、後退位置の上段側プッシャーを下段側プッシャーの上面に沿ってその前端部近傍まで突出移動させて、下段側プッシャー上の廃棄物を下段側プッシャーの前部に押し出す動作と、上段側プッシャーを後退限まで後退移動させる動作と、廃棄物を落下待ちする第２待機時間の間下段側プッシャーを待機させる動作とを順次に繰り返して行うプッシャー動作制御装置を設け、前記プッシャー動作制御装置は、廃棄物の質が落下しやすい高圧縮性の場合には第１待機時間と第２待機時間とをそれぞれ短くし、廃棄物の質が落下しにくい低圧縮性の場合には第１待機時間と第２待機時間とをそれぞれ長くするように構成されたものである。
【０００７】
上記各構成によれば、上段側プッシャーにより下段側プッシャー上の廃棄物を押し出して下段側プッシャーの前部に押し出すので、圧縮度が低く落下しにくい廃棄物であっても、第１待機時間により、下段側プッシャーが後退した時に生じる空隙を埋めることができ、次の下段側プッシャーの駆動により十分な廃棄物を確実に焼却炉に押し出して供給することができる。また変化する廃棄物の圧縮性、落下しやすさに応じて、上段側プッシャーの第１待機時間および下段側プッシャーの第２待機時間を調整するので、上段側プッシャーにより押し出された廃棄物が下段側プッシャーの前部の空隙に確実に落下して安定してから下段側プッシャーが突出移動され、廃棄物を確実に押し出して効率よく供給することができる。
【００１１】
【発明の実施の形態】
ここで、本発明に係る廃棄物の供給装置の実施の形態を図１〜図４に基づいて説明する。
【００１２】
図１，図２に示すように、この廃棄物供給装置は、たとえば火格子式ごみ焼却炉２に設置され、たとえば上下２段の上段プッシャー（上段側プッシャー）３Ｂおよび下段プッシャー（下段側プッシャー）３Ａを使用してごみホッパー１の下部出口１ａから廃棄物であるごみを所定量ずつ焼却炉２の火格子２ａ上に送り出すものである。
【００１３】
下段プッシャー３Ａは、下段駆動シリンダ４Ａにより後退限Ａから突出限Ｂまでの下段出退ストロークＬ１を間欠移動されて、下段プッシャー３Ａ前部の移動範囲にあるごみを所定量ずつ焼却炉２に送り出すことができる。
【００１４】
上段プッシャー３Ｂは、下段プッシャー３Ａ上のごみを下段プッシャー３Ａの前部に押出すためのもので、ホッパー出口１ａの前面部に対応する後退限ａから、下段プッシャー３Ａの突出限Ｂに対応する近傍位置たとえば面一となる突出限ｂまでの上段出退ストロークＬ２を間欠移動される。
【００１５】
これらプッシャー３Ａ，３Ｂは、油圧ポンプ５から油圧が下段切換弁６Ａおよび下段切換弁６Ｂを介してそれぞれ駆動シリンダ４Ａ，４Ｂに供給されてそれぞれ駆動され、タイマー内蔵のプッシャー動作制御装置７により、下段切換弁６Ａと下段切換弁６Ｂに操作信号がそれぞれ出力されて駆動制御される。このプッシャー動作制御装置７には、操作盤９から設定信号が入力されて手動により操作され、またごみ供給検出装置や炉内の燃焼状態を監視するセンサ類１０の検出信号に基づいて焼却炉２の燃焼制御を行う燃焼制御装置８からの信号により操作される。
【００１６】
次に、この廃棄物供給装置１の動作を図３，図４を参照して説明する。
まず、下段駆動シリンダ４Ａが伸展されて下段プッシャー３Ａが後退限Ａから突出限Ｂまで突出移動され、前方のごみが焼却炉２に押し出される(STEP.1)。この時、駆動シリンダ４Ａに内蔵されたセンサなどにより、下段プッシャー３Ａが突出限Ｂにあるのが確認される(STEP.2)。予めタイマーに設定された突出限停止時間Ｔ１が過ぎると、下段駆動シリンダ４Ａが収縮されて下段プッシャー３Ａが突出限Ｂから後退限Ａまで後退移動される(STEP.3)。
【００１７】
ここで下段プッシャー３Ａの上方および前方のごみを下降させて十分に安定させるための第１待機時間Ｗ１がタイマーにより設定されており、この第１待機時間Ｗ１の経過を確認(STEP.4)した後、上段駆動シリンダ４Ｂが伸展されて上段プッシャー３Ｂが後退限ａから突出限ｂまで移動され、下段プッシャー３Ａ上のごみを前方に押し出す(STEP.5)。この時、上段駆動シリンダ４Ｂに内蔵されたセンサなどにより、上段プッシャー３Ｂが突出限ｂにあるのが確認される(STEP.6)。これにより、下段プッシャー３Ａが後退した時に生じる前方空隙に十分なごみが下降しないことがあっても、この空隙が上段プッシャー３Ｂにより押し出されたごみに埋められることにより、次回の下段プッシャー３Ａの突出移動により十分な量のごみが焼却炉２に送り出される。
【００１８】
予めタイマーに設定された突出限停止時間Ｔ２が過ぎると、上段駆動シリンダ４Ｂが収縮されて上段プッシャー３Ｂが突出限ｂから後退限ａまで後退移動される(STEP.7)。さらに、下段プッシャー３Ａにより押し出されたごみが降下して空隙を埋めるためにタイマーに設定された落下待ち時間である第２待機時間Ｗ２の経過を確認(STEP.8)後、ＳＴＥＰ．１に戻り、これらの動作が繰り返される。
【００１９】
またプッシャー動作制御装置７により、ごみが下降しやすいかどうかを判別するごみの圧縮性の程度（ごみ質）に応じて、タイマーに設定された第１待機時間Ｗ１および第２待機時間Ｗ２が制御される。すなわち、作業員により焼却炉２の燃焼状態を目視や計器類の監視結果から、ごみの供給量の増減を判断してごみ質が下降しにくい低圧縮性であると判断した場合には、操作盤９により、プッシャー動作制御装置７を介して第１，第２待機時間Ｗ１，Ｗ２を延ばし、ごみが十分に下降されるだけの時間が確保されるようにそれぞれ制御される。反対に、ごみ質が下降しやすい高圧縮性の場合には、第１，第２待機時間Ｗ１，Ｗ２を短縮して必要以上のごみが供給されないようにそれぞれ制御される。
【００２０】
また、炉の燃焼状態を監視するセンサー類１０などの計測器の検出信号やごみの供給量を検出する検出装置などの監視データに基づいて、燃焼制御装置８により焼却炉２の運転状態が制御されて運転されており、この燃焼制御装置８からの出力信号に基づいてプッシャー動作制御装置７が操作される。すなわち、ごみ供給量が目標値よりも少ないと判断される場合には、第１，第２待機時間Ｗ１，Ｗ２が延長され、反対にごみ供給量が目標値よりも多いと判断される場合には、第１，第２待機時間Ｗ１，Ｗ２が短縮されるようにそれぞれ自動的に制御される。もちろん、プッシャー動作制御装置７および燃焼制御装置８により、必要に応じて上下段プッシャー３Ａ，３ＢのサイクルタイムＳや出退ストロークＬ１，Ｌ２も制御され、あるいは上段プッシャー３Ｂの動作が停止される。
【００２１】
上記実施の形態によれば、上段プッシャー３Ｂにより下段プッシャー３Ａの上方のごみを下段プッシャー３Ａの前方に押し出して空隙を埋めることができるので、下降しにくい低圧縮性のごみ質であっても、下段プッシャー３Ａにより十分な量のごみを確実に押し出して安定供給することができる。
【００２２】
またプッシャー動作制御装置７により、ごみの下降および安定を確保するための第１，第２待機時間Ｗ１，Ｗ２をごみ質に応じて制御することができるので、ごみを安定して正確に供給して焼却炉２の安定燃焼を実現できる。これにより、ダイオキシンの発生を抑制でき、また異常燃焼によるクリンカの発生やストーカの焼損などを防止できる。さらにこれらのトラブルによる炉の停止回数を低減できて、起動時に発生しやすいダイオキシンなど公害物質発生の抑制に寄与することができる。
【００２３】
図５は上下３段にプッシャー３Ａ，３Ｂ，３Ｃを配置した他の実施の形態を示すもので、最上段のプッシャー３Ｃは、中段のプッシャー３Ｂ上方のごみをその前方空隙に送り出すように構成される。上記構成によれば、先の実施の形態と同様の効果を奏するとともに、さらに圧縮性の低いごみ質であっても、より効果的にごみを押し出すことができる。
【００２４】
図６は、幅方向に２個の下段プッシャー３ＡＲ，３ＡＬ上に、それぞれ上段プッシャー３ＢＲ，３ＢＬを出退自在に配置したさらに他の実施の形態を示すもので、先の実施の形態の作用効果に加えて、幅方向に異なる動作でごみを送りだすことができ、大型の焼却炉に効果的にごみを供給することができる。
【００２５】
【発明の効果】
以上に述べたごとく本発明の請求項１または２記載の発明によれば、上段側プッシャーにより下段側プッシャー上の廃棄物を押し出して下段側プッシャーの前部に押し出すので、圧縮度が低く落下しにくい廃棄物であっても、第１待機時間により、下段側プッシャーが後退した時に生じる空隙を埋めることができ、次の下段側プッシャーの駆動により十分な廃棄物を確実に焼却炉に押し出して供給することができる。また変化する廃棄物の圧縮性、落下しやすさに応じて、上段側プッシャーの第１待機時間および下段側プッシャーの第２待機時間を調整するので、上段側プッシャーにより押し出された廃棄物が下段側プッシャーの前部の空隙に確実に落下して安定してから下段側プッシャーが突出移動され、廃棄物を確実に押し出して効率よく供給することができる。
【００２６】
さらに請求項２または４記載の発明によれば、支持刻々と変化する廃棄物の圧縮性、落下しやすさに応じて、下段プッシャーの落下待ち時間を調整するので、上段プッシャーにより押し出された廃棄物がプッシャーの前部の空隙に確実に落下して安定してから下段プッシャーが突出移動されるので、廃棄物を確実に押し出して効率よく供給することができる。
【図面の簡単な説明】
【図１】本発明に係る廃棄物供給装置の実施の形態を示す側面断面図である。
【図２】同廃棄物供給装置の平面断面図である。
【図３】同廃棄物供給装置のプッシャーの動作を説明するフローチャートである。
【図４】同廃棄物供給装置のプッシャーの動作を説明するタイムチャートである。
【図５】本発明に係る廃棄物供給装置の他の実施の形態を示す側面断面図である。
【図６】本発明に係る廃棄物供給装置のさらに他の実施の形態を示す平面断面図である。
【図７】従来の廃棄物供給装置を示す側面断面図である。
【符号の説明】
１ ごみホッパー
１ａ 出口
２ 焼却炉
３Ａ 上段プッシャー
３Ｂ 下段プッシャー
４Ａ 上段駆動シリンダ
４Ｂ 下段駆動シリンダ
６Ａ 上段切換弁
６Ｂ 下段切換弁
７ プッシャー動作制御装置
８ 燃焼制御装置
３Ｃ 最上段プッシャー
３ＡＲ，３ＡＬ 下段プッシャー
３ＢＲ，３ＢＬ 上段プッシャー[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waste supply method and apparatus for sending waste from a hopper to an incinerator using a pusher.
[0002]
[Prior art]
Conventionally, as shown in FIG. 7, when the waste hopper 21 is charged into the incinerator 22, a single or a pusher 23 arranged in parallel in the width direction is driven to move out and supply a certain amount of dust.
[0003]
[Problems to be solved by the invention]
In recent years, waste incinerators have been operated with an emphasis on improving combustion stability from the viewpoint of preventing the generation of dioxins. However, in the above configuration, the waste quality is low and the compressibility is low. When the pusher 23 is retracted, there is a problem that when the pusher 23 is retracted, the dust does not fall into the receding gap 24, and a predetermined amount of dust cannot be sent out by the next projecting movement of the pusher 23. In such a case, even if the cycle speed of the pusher 23 is increased, it cannot be dealt with, a specified amount of dust cannot be supplied, and combustion may become unstable.
[0004]
SUMMARY OF THE INVENTION An object of the present invention is to provide a waste supply method and apparatus capable of solving the above-described problems and supplying a stable and accurate waste regardless of the waste quality.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the waste supply method according to claim 1 of the present invention uses a pusher which is arranged in a plurality of upper and lower stages and can be withdrawn and retracted from the lower outlet of the hopper to the incinerator. The upper stage during the first waiting time when the waste is dropped and the action of feeding the waste by projecting the lower stage pusher, the action of moving the lower stage pusher back to the retreat limit in the outlet of the hopper, Operation to wait for the side pusher and operation to push the waste on the lower pusher to the front of the lower pusher by moving the upper pusher in the retracted position along the upper surface of the lower pusher to the vicinity of its front end. And the operation of moving the upper pusher back to the retreat limit and the operation of waiting the lower pusher during the second waiting time for waiting for the waste to fall. If the waste quality is easy to fall and the compressibility is high, the first waiting time and the second waiting time are shortened respectively, and the waste quality is low. The first waiting time and the second waiting time are each increased .
[0006]
Further, the waste supply apparatus according to claim 2 is a waste supply apparatus provided with a pusher that is disposed at a lower outlet of the hopper so as to be freely retractable and pushes the waste into an incinerator. Are arranged in multiple stages, and a drive device is provided to move each pusher out and back, and the operation to feed out the dust by projecting the lower pusher and the action to move the lower pusher back to the retreat limit in the hopper outlet And the operation of waiting the upper pusher during the first waiting time for waiting for the drop of waste, and the upper pusher in the retracted position along the upper surface of the lower pusher so as to project and move to the vicinity of the front end. An operation to push the waste on the pusher to the front of the lower pusher, an operation to move the upper pusher back to the retreat limit, and a second to wait for the waste to fall A pusher operation control device that sequentially repeats the operation of waiting for the lower pusher during the machine time, and the pusher operation control device is configured to wait for the first standby when the quality of the waste easily drops. The time and the second waiting time are shortened, and the first waiting time and the second waiting time are lengthened in the case of low compressibility where the quality of the waste is difficult to drop .
[0007]
According to the above arrangement, since the upper side pusher extruding the waste on the lower side pusher pushes the front of the lower side pusher, even compression degree falling hard waste low, the first waiting time can lower side pusher can fill voids that occur when retracted, is fed reliably extruded incinerator sufficient waste by driving the next lower side pusher. In addition, the first standby time of the upper pusher and the second standby time of the lower pusher are adjusted according to the changing compressibility of the waste and the ease of dropping, so that the waste pushed out by the upper pusher is The lower pusher is protruded and moved after reliably falling and stabilizing in the front gap of the side pusher, and the waste can be reliably pushed out and supplied efficiently.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Here, an embodiment of a waste supply apparatus according to the present invention will be described with reference to FIGS.
[0012]
As shown in FIGS. 1 and 2, this waste supply apparatus is installed in, for example, a grate-type garbage incinerator 2, for example, an upper pusher (upper pusher) 3 </ b > B and a lower pusher (lower pusher). The waste as waste is sent out from the lower outlet 1a of the waste hopper 1 to the grate 2a of the incinerator 2 by a predetermined amount using 3A .
[0013]
The lower pusher 3A is intermittently moved by the lower drive cylinder 4A in the lower step-out stroke L1 from the backward limit A to the protruding limit B, and sends the dust in the moving range in front of the lower pusher 3A to the incinerator 2 by a predetermined amount. be able to.
[0014]
The upper pusher 3B is for extruding the dust on the lower pusher 3A to the front part of the lower pusher 3A, and corresponds to the protrusion limit B of the lower pusher 3A from the retreat limit a corresponding to the front face of the hopper outlet 1a. The upper stage extending / retracting stroke L2 is intermittently moved to the vicinity position, for example, the protrusion limit b which is flush with the surface.
[0015]
The pushers 3A and 3B are driven by hydraulic pressure supplied from the hydraulic pump 5 to the drive cylinders 4A and 4B via the lower switching valve 6A and the lower switching valve 6B, respectively, and are driven by the pusher operation control device 7 with a built-in timer. Operation signals are output to the switching valve 6A and the lower switching valve 6B, respectively, and are driven and controlled. The pusher operation control device 7 is manually operated by receiving a setting signal from the operation panel 9, and based on the detection signal of the dust supply detection device and sensors 10 for monitoring the combustion state in the furnace, the incinerator 2 is operated. It is operated by a signal from the combustion control device 8 that performs the combustion control of the above.
[0016]
Next, the operation of the waste supply apparatus 1 will be described with reference to FIGS.
First, the lower drive cylinder 4A is extended, and the lower pusher 3A is protruded and moved from the retreat limit A to the protrusion limit B, and the waste in front is pushed out to the incinerator 2 (STEP.1). At this time, it is confirmed that the lower pusher 3A is in the protruding limit B by a sensor or the like built in the drive cylinder 4A (STEP.2). When the protrusion limit stop time T1 set in advance in the timer has passed, the lower drive cylinder 4A is contracted and the lower pusher 3A is moved backward from the protrusion limit B to the retract limit A (STEP.3).
[0017]
Here, the first standby time W1 for lowering the dust above and in front of the lower pusher 3A and stabilizing it sufficiently is set by the timer, and the elapse of the first standby time W1 was confirmed (STEP.4). Thereafter, the upper drive cylinder 4B is extended and the upper pusher 3B is moved from the retreat limit a to the protrusion limit b, and the dust on the lower pusher 3A is pushed forward (STEP.5). At this time, it is confirmed by the sensor built in the upper drive cylinder 4B that the upper pusher 3B is at the protrusion limit b (STEP.6). As a result, even if sufficient dust does not fall in the front gap generated when the lower pusher 3A is retracted, the gap is filled with the dust pushed out by the upper pusher 3B, so that the next lower pusher 3A protrudes and moves. Thus, a sufficient amount of garbage is sent out to the incinerator 2.
[0018]
When the protrusion limit stop time T2 preset in the timer has passed, the upper drive cylinder 4B is contracted and the upper pusher 3B is moved backward from the protrusion limit b to the reverse limit a (STEP.7). Furthermore, after confirming the passage of the second waiting time W2, which is a falling waiting time set in the timer in order for the dust pushed out by the lower pusher 3A to fall and fill the gap (STEP.8), STEP. Returning to 1, these operations are repeated.
[0019]
Further, the first standby time W1 and the second standby time W2 set in the timer are controlled by the pusher operation control device 7 in accordance with the degree of dust compressibility (trash quality) for determining whether or not the dust is likely to descend. Is done. In other words, when the operator determines that the combustion state of the incinerator 2 is low or compressible by judging the increase or decrease in the amount of waste supplied from the result of visual inspection or monitoring of the instruments, The panel 9 is controlled so as to extend the first and second standby times W1 and W2 via the pusher operation control device 7 and to secure a time sufficient for the dust to be lowered. On the other hand, in the case of high compressibility where the waste quality is likely to fall, the first and second standby times W1, W2 are shortened to control the waste so that it is not supplied more than necessary.
[0020]
Further, the operation state of the incinerator 2 is controlled by the combustion control device 8 based on the detection signal of a measuring instrument such as the sensors 10 for monitoring the combustion state of the furnace and the monitoring data of the detection device for detecting the amount of dust supply. The pusher operation control device 7 is operated based on the output signal from the combustion control device 8. That is, when it is determined that the waste supply amount is smaller than the target value, the first and second standby times W1 and W2 are extended, and conversely, when it is determined that the waste supply amount is larger than the target value. Are automatically controlled such that the first and second standby times W1, W2 are shortened. Of course, the pusher operation control device 7 and the combustion control device 8 also control the cycle time S of the upper and lower pushers 3A and 3B and the retracting strokes L1 and L2 as necessary, or the operation of the upper pusher 3B is stopped.
[0021]
According to the above embodiment, the upper pusher 3B can push the dust above the lower pusher 3A to the front of the lower pusher 3A so as to fill the gap. The lower pusher 3A can reliably push out and supply a sufficient amount of dust.
[0022]
Further, the pusher operation control device 7 can control the first and second standby times W1 and W2 for ensuring the lowering and stability of the garbage according to the quality of the garbage, so that the garbage can be supplied stably and accurately. Thus, stable combustion of the incinerator 2 can be realized. Thereby, generation | occurrence | production of dioxin can be suppressed and generation | occurrence | production of clinker by abnormal combustion, burning of a stoker, etc. can be prevented. Furthermore, the number of times the furnace is shut down due to these troubles can be reduced, and it can contribute to the suppression of the generation of pollutants such as dioxins that are likely to occur during startup.
[0023]
FIG. 5 shows another embodiment in which pushers 3A, 3B, and 3C are arranged in three upper and lower stages. The uppermost pusher 3C is configured to send the dust above the middle pusher 3B to the front gap. The According to the said structure, while having the same effect as previous embodiment, even if it is a dust quality with further low compressibility, it can push out waste more effectively.
[0024]
FIG. 6 shows still another embodiment in which the upper pushers 3BR and 3BL are arranged on the two lower pushers 3AR and 3AL in the width direction so as to be retractable and retractable. In addition to this, it is possible to send out garbage with different operations in the width direction, and to effectively supply garbage to a large incinerator.
[0025]
【The invention's effect】
According to the invention of claim 1 or 2, wherein the present invention as described above, since the upper side pusher extruding the waste on the lower side pusher pushes the front of the lower side pusher, compression degree may fall low even hard to waste, the first waiting time, it is possible to fill the gap that occurs when the lower side pusher is retracted and extruded reliably incinerator sufficient waste by driving the next lower side pusher supply can do. In addition, the first standby time of the upper pusher and the second standby time of the lower pusher are adjusted according to the changing compressibility of the waste and the ease of dropping, so that the waste pushed out by the upper pusher is The lower pusher is protruded and moved after reliably falling and stabilizing in the front gap of the side pusher, and the waste can be reliably pushed out and supplied efficiently.
[0026]
Furthermore, according to the second or fourth aspect of the invention, since the drop waiting time of the lower pusher is adjusted according to the compressibility of the waste that changes every moment and the ease of dropping, the waste pushed out by the upper pusher Since the lower pusher is protruded and moved after the object surely falls into the front gap of the pusher and stabilizes, the waste can be reliably pushed out and supplied efficiently.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing an embodiment of a waste supply apparatus according to the present invention.
FIG. 2 is a plan sectional view of the waste supply apparatus.
FIG. 3 is a flowchart for explaining the operation of a pusher of the waste supply apparatus.
FIG. 4 is a time chart for explaining the operation of the pusher of the waste supply apparatus.
FIG. 5 is a side sectional view showing another embodiment of the waste supply apparatus according to the present invention.
FIG. 6 is a plan sectional view showing still another embodiment of the waste supply apparatus according to the present invention.
FIG. 7 is a side sectional view showing a conventional waste supply apparatus.
[Explanation of symbols]
1 Waste Hopper 1a Outlet 2 Incinerator 3A Upper Pusher 3B Lower Pusher 4A Upper Drive Cylinder 4B Lower Drive Cylinder 6A Upper Switch Valve 6B Lower Switch Valve 7 Pusher Operation Control Device 8 Combustion Control Device 3C Top Pusher 3AR, 3AL Lower Pusher 3BR, 3BL upper pusher

Claims (2)

上下複数段に配置されてそれぞれ出退自在なプッシャーを使用して、ホッパーの下部出口から焼却炉に廃棄物を供給するに際し、
下段側プッシャーを突出移動させてごみを送り出す動作と、
下段側プッシャーをホッパーの出口内の後退限まで後退移動させる動作と、
廃棄物を落下待ちする第１待機時間の間上段側プッシャーを待機させる動作と、
後退位置の上段側プッシャーを下段側プッシャーの上面に沿ってその前端部近傍まで突出移動させて、下段側プッシャー上の廃棄物を下段側プッシャーの前部に押し出す動作と、
上段側プッシャーを後退限まで後退移動させる動作と、
廃棄物を落下待ちする第２待機時間の間下段側プッシャーを待機させる動作とを順次に繰り返して行い、
廃棄物の質が落下しやすい高圧縮性の場合には第１待機時間と第２待機時間とをそれぞれ短くし、廃棄物がの質廃棄物が落下しにくい低圧縮性の場合には第１待機時間と第２待機時間とをそれぞれ長くする
ことを特徴とする廃棄物の供給方法。When supplying waste to the incinerator from the lower outlet of the hopper using pushers that are arranged in multiple stages above and below and can be moved out and retracted,
The operation of feeding the garbage by projecting the lower pusher,
An operation of moving the lower pusher back to the retreat limit in the hopper outlet;
An operation of waiting the upper pusher during a first waiting time for waiting for the waste to fall;
An operation to push the waste on the lower pusher to the front of the lower pusher by projecting and moving the upper pusher in the retracted position along the upper surface of the lower pusher to the vicinity of its front end, and
An operation of moving the upper pusher back to the reverse limit;
The operation of waiting for the lower pusher during the second waiting time to wait for the waste to fall is sequentially repeated,
When the quality of the waste is highly compressible, the first waiting time and the second waiting time are shortened. When the waste quality is low, the first waiting time is short. A waste supply method, wherein the waiting time and the second waiting time are increased . ホッパーの下部出口に出退自在に配置されて廃棄物を焼却炉に押出すプッシャーを備えた廃棄物の供給装置であって、A waste supply device provided with a pusher that is disposed at a lower outlet of the hopper so as to be freely retractable and pushes the waste into an incinerator,
プッシャーを上下に複数段に配置するとともに、各プッシャーをそれぞれ出退させる駆動装置を設け、The pusher is arranged in multiple stages up and down, and a drive device is provided to move each pusher back and forth,
下段側プッシャーを突出移動させてごみを送り出す動作と、下段側プッシャーをホッパーの出口内の後退限まで後退移動させる動作と、廃棄物を落下待ちする第１待機時間の間上段側プッシャーを待機させる動作と、後退位置の上段側プッシャーを下段側プッシャーの上面に沿ってその前端部近傍まで突出移動させて、下段側プッシャー上の廃棄物を下段側プッシャーの前部に押し出す動作と、上段側プッシャーを後退限まで後退移動させる動作と、廃棄物を落下待ちする第２待機時間の間下段側プッシャーを待機させる動作とを順次に繰り返して行うプッシャー動作制御装置を設け、The operation of feeding the waste by projecting the lower pusher, the operation of moving the lower pusher back to the retreat limit in the hopper outlet, and the upper pusher waiting for the first waiting time for waiting for the waste to fall. Operation, the upper pusher in the retracted position is moved along the upper surface of the lower pusher to the vicinity of its front end, the waste on the lower pusher is pushed out to the front of the lower pusher, and the upper pusher A pusher operation control device that sequentially and repeatedly performs the operation of moving the retreat to the retreat limit and the operation of waiting for the lower pusher during the second waiting time for waiting for the waste to fall,
前記プッシャー動作制御装置は、廃棄物の質が落下しやすい高圧縮性の場合には第１待機時間と第２待機時間とをそれぞれ短くし、廃棄物の質が落下しにくい低圧縮性の場合には第１待機時間と第２待機時間とをそれぞれ長くするように構成されたThe pusher operation control device shortens the first waiting time and the second waiting time when the waste quality is easy to fall, and lowers the waste quality when the waste quality is difficult to fall. Is configured to increase the first waiting time and the second waiting time respectively.
ことを特徴とする廃棄物の供給装置。The waste supply apparatus characterized by the above-mentioned.
JP19488998A 1998-07-10 1998-07-10 Waste supply method and apparatus Expired - Lifetime JP3830281B2 (en)

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