JP3771095B2 - Anchor device, rotary kiln furnace and anchor construction method - Google Patents

Anchor device, rotary kiln furnace and anchor construction method Download PDF

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JP3771095B2
JP3771095B2 JP30267399A JP30267399A JP3771095B2 JP 3771095 B2 JP3771095 B2 JP 3771095B2 JP 30267399 A JP30267399 A JP 30267399A JP 30267399 A JP30267399 A JP 30267399A JP 3771095 B2 JP3771095 B2 JP 3771095B2
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anchor
shell member
attached
anchor device
rotary kiln
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JP2001124475A (en
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達彦 桐山
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Takuma KK
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Takuma KK
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Description

【0001】
【発明の属する技術分野】
本発明はアンカー装置、炉およびアンカー施工方法に関し、詳しくは、アンカーの取付け、解体作業が楽なアンカー装置、このアンカー装置を備えた炉およびアンカー施工方法に関する。
【0002】
【従来の技術】
ロータリーキルン、その他各種産業用炉の内側は、用途にもよるが、燃焼による高温(例えば、廃棄物の燃焼では800〜1300℃)に耐えるべく耐熱性の不定形耐火物、レンガなどが内張りされている。従来、不定形耐火物を内張りする場合は、金属製のシェル部材の内側に直接アンカーを、一般に200〜300mm間隔でボルト締めあるいは溶接して取り付け、このアンカーを埋没する程度の厚み(例えば、炉内部に向けてアンカーの先端より更に20〜50mm程度)に不定形耐火物を吹き付ける、あるいは振動流し込みを行う等によって形成される。
【0003】
アンカーは棒状ステンレス鋼を組み合わせてY形あるいはV形などにして構成されており、例えば図6(a),(b)に示すように、主軸16aの中程から2方向に延設されている枝軸16bと、主軸の一方の先端部から枝軸16bとは側面視で略90°交差するような方向に延設されている枝軸16cを備えて構成されている。そして、主軸16aの他方の端部をシェル部材4に溶接などして固定されるようになっている。シェル部材4に固定されるアンカー16は、互いに隣接するアンカー16どうしの向きを略90°ずらして一定間隔に固定される。この上から不定形耐火物5を吹き付けたりして被覆形成し、炉壁の内張りが行われる。
【0004】
炉壁内側に形成されるアンカーは、施工時に短いピッチで密に取り付けられることもあって、その取付け作業自体に多大の時間と労力を要するのみならず、損耗あるいは損傷した炉部分を修理する場合においても、損耗あるいは損傷した耐火物の撤去とアンカーの取り外し作業が面倒となる構造をしていた。しかも、アンカーを取り外した後に新しくアンカーを取り付けて、耐火物を施工するにも同様に時間がかかり、アンカーの取付け、取外し作業には、全体としてかなりの長時間と労力とを要していた。
【0005】
そこで、そのような作業を改善するため、L形アングルの一辺に予め複数のアンカーを溶接して取り付けておき、このアングルをシェル部材にボルト締めして取り付けるという方法が考えられた(実開平4−90896号公報)。この方法では、アンカーを溶接したアングル単位で取付け、取外しができるので、1本毎にアンカーを取付け、取外す作業に比べて作業工数は短縮される。
【0006】
【発明が解決しようとする課題】
しかしながら、上記方法はL形アングルの他の一辺にボルト挿通孔を設けてシェル部材と固定できるようにすると共に、他の一辺に複数のアンカーを取り付けるようにしているため、アンカーを取り付けたアングルを現場に持ち込み、シェル部材の内側に固着する作業は、全体がかなりの重量を有していて、しかも片側に重量の偏りがあるため、必ずしも楽なものではなかった。特に、産業廃棄物の焼却用として多用されている2〜3m径の筒状構造を有するロータリーキルン等の場合、狭い場所でアンカーを密に取付け、あるいは取外しをするため、アンカーをアングル単位で取付け、取外しができたとしても、その作業は多量の粉塵が発生する劣悪な作業環境での多大の労力と時間がかかり、極めて面倒である。
【0007】
そこで、本発明の目的は、上記従来技術の有する問題点に鑑みて、取付け作業が楽であり、しかも耐火物の被覆を強固に施工できると共に、炉壁損耗時の解体作業も楽となり、そのための作業工数を短縮可能なアンカー装置、このアンカー装置を備えた炉およびアンカー施工方法を提供することにある。
【0008】
【課題を解決するための手段】
上記目的は各請求項記載の発明により達成される。すなわち、本発明に係るアンカー装置の特徴構成は、ロータリーキルンの炉壁を構成するシェル部材に取付け可能、かつ不定形耐火物を表面に被覆可能であって、主軸とこれに傾斜して接合されている複数の枝軸とを有するアンカーの複数個を、前記シェル部材に取付け可能な固着手段に一体的に接合されていて、
前記枝軸とアンカーとが偶数個からなり、これらアンカーの重量が偏らないように前記固着手段に取り付けられて、この固着手段が前記シェル部材に取付け可能および解体容易になっていると共に、
偶数個の前記枝軸の自由端どうしが互いに離間する方向で、かつ前記主軸とも離間する方向になるよう前記枝軸の他端が前記主軸に接合されていると共に、これらを備えた前記アンカーの複数個が互いに離間する方向に前記固着手段に一体的に接合されていることにある。
【0009】
この構成によれば、アンカーの複数の主軸および枝軸により、広い範囲にわたる不定形耐火物の保持機能を確保できるので、シェル部材に固着する固着手段のピッチを長くでき、シェル部材への取付け個所を減らすことができて、簡単な構成にかかわらず、大幅な取付け工数の削減を達成でき、顕著な労力低減と作業時間の短縮を図ることができる。従って、補修に際しても、アンカー装置の取り外し個所が少ないので、取り外し作業に要する労力と時間を少なくできる。
しかも、一層広い範囲にわたる耐火物の保持機能を確保できるので、シェル部材に固着する固着手段のピッチを長くでき、従ってアンカー装置のシェル部材への取付け個所を少なくできて都合がよい。
【0010】
その結果、取付け作業が楽であり、しかも不定形耐火物の被覆を強固に施工できると共に、炉壁損耗時の解体作業も楽となり、そのための作業工数を短縮可能なアンカー装置を提供することができた。
【0011】
複数の前記枝軸の自由端どうしが互いに離間する方向で、かつ前記主軸とも離間する方向になるよう前記枝軸の他端が前記主軸に溶接接合されていると共に、これらを備えた前記アンカーの複数個が互いに離間する方向に前記固着手段に接合されていることが好ましい。
【0012】
この構成によれば、一層広い範囲にわたる耐火物の保持機能を確保できるので、シェル部材に固着する固着手段のピッチを長くでき、従ってアンカー装置のシェル部材への取付け個所を少なくできて都合がよい。
【0013】
更に、本発明に係るアンカー装置として、ロータリーキルンの炉壁を構成するシェル部材に取付け可能、かつ不定形耐火物を表面に被覆可能であって、主軸とこれに傾斜して接合されている複数の枝軸とを有するアンカーの複数個を、前記シェル部材に取付け可能な固定治具に一体的に接合して、前記シェル部材に取付け可能になっているアンカー装置において、
前記枝軸とアンカーとが偶数個からなり、これらアンカーの重量負荷が偏ることなく前記固定治具に取り付けられて、この固定治具が前記シェル部材に取付け可能および解体容易になっているように構成してもよい。
【0014】
この構成によっても、シェル部材に固着する固着手段のピッチを長くでき、シェル部材への取付け個所を減らすことができて、簡単な構成にかかわらず、大幅な取付け工数の削減を達成でき、顕著な労力低減と作業時間の短縮を図ることができる。従って、補修に際しても、アンカー装置の取り外し個所が少ないので、取り外し作業に要する労力と時間を少なくできる。しかも、複数のアンカーを接合した固定治具を、片側に重量負荷の偏りなくシェル部材に固着可能になっているので、アンカーを接合した固定治具が全体として少なくない重量であっても、作業者に対する重量負荷が偏らないので施工作業が一層楽になる。従って、アンカー取付け作業が楽であり、しかも不定形耐火物の被覆を強固に施工できると共に、炉壁損耗時の解体作業も楽となり、そのための作業工数を短縮可能なアンカー装置を提供することができた。
【0015】
更に、本発明に係るロータリーキルンの特徴構成は、請求項1又は2のアンカー装置が、炉壁を構成するシェル部材に解体可能に取り付けられていると共に不定形耐火物によって被覆された炉壁を有することにある。
【0016】
この構成によれば、取付け作業が楽であり、しかも耐火物の被覆を強固に施工できると共に、炉壁損耗時の解体作業も楽となり、そのための作業工数を短縮可能なアンカー装置を備えた炉を提供することができた。
しかも、アンカー装置を取り付ける炉壁がロータリーキルンの炉壁であることから、特に補修などの際の解体作業において、シェル部材との固着手段を炉外で取り外すと共に、炉を回転することにより上部に位置する不定形耐火物およびアンカー装置が順次剥落して下方に落下することから、原則的に炉内部に作業者が入って作業する必要がないので、解体時間が短縮されて解体工数を低減でき、労力を大幅に低減できると共に、作業環境を著しく改善できる。
【0019】
更に又、本発明に係るアンカー施工方法の特徴構成は、請求項1のアンカー装置を、ロータリーキルンの炉壁を構成するシェル部材内側に設置すると共にシェル部材外部から解体可能に取付け固定し、次いで前記アンカー装置を被覆するように不定形耐火物を内張りすることにある。
【0020】
この構成によれば、炉壁にアンカー装置を取り付ける作業が楽となり、しかも耐火物の被覆を強固に施工できると共に、炉壁損耗時の解体作業も楽となり、そのための作業工数を短縮可能なアンカー施工方法を提供することができた。
【0021】
【発明の実施の形態】
本発明の実施の形態を、図面を参照して詳細に説明する。本実施形態のアンカー装置およびその施工方法を、炉の一例であるロータリーキルンの周壁に取付け施工する例を挙げて説明する。図1(a)はロータリーキルンRの概略断面構造を示し、図1(b)は同図(a)のB−B断面構造を示す。このロータリーキルンRは、前工程より被処理物の搬送を受け入れる入口フード1が形成された搬入口と、回転可能な円筒状をした本体胴部2と、処理後次工程に送り出す排出口3とを備えて構成されている。そして、本体胴部2は鉄皮などからなるシェル部材4と、このシェル部材4に内張りされている不定形耐火物5とから構成される。本体胴部2は、幾分排出口3側に向けて下方に傾斜しており、操業時には、本体胴部2の外周に設けられた回転・伝達手段を介して、図外のモータなどの駆動手段から回転駆動されるようになっていて、投入された廃棄物は燃焼しながら回転に伴って、排出口3に順次送られるようになっている。
【0022】
入口フード1の構造の詳細は図示しないが、廃棄物投入口や空気挿入口や加熱のためのバーナなどが取り付けられるようになっていて、略全体が耐火物で構成されている。もとより、廃棄物投入口は小規模な単なる開口であるものから、大量の廃棄物を投入可能なホッパーに接続されたもの等として構成される。
【0023】
図1には省略されているが、本体胴部2の不定形耐火物5には、図2に示すアンカー装置6が埋設されている。すなわち、図2(a)は、本実施形態のアンカー装置をシェル部材4に取り付けた状態の平面構造を示し、図2(b)は更に不定形耐火物を被覆施工して、本実施形態のアンカー装置6をロータリーキルンRの周壁に取付けた状態の部分側断面構造を示す。このアンカー装置6は、従来のものとは異なり、棒状ステンレス鋼(SUS 309,316等)をY形あるいはV形などとしたアンカーの4本が固着手段であるボルト7の頭部7aに溶接されて構成されている。つまり、各アンカーは主軸6aの中程から2方向に延設されている枝軸6bと、主軸6aの一方の先端部(自由端側)から枝軸6bとは側面視で略90°交差するような方向に延設されている枝軸6cを備えて構成されており、このアンカーが互いに略等間隔で離間する方向(平面視で、各主軸6aが90°離間する方向)となるようボルト7の頭部7aに溶接接合されている。ボルト7は、シェル部材4の内側から挿入されると共に、シェル部材4の外側でパッキン8を介してナット9で締めつけて、シェル部材4に固着される。
【0024】
次に、本実施形態のアンカー装置を施工する方法について簡単に説明する。まず、予め図2に示すアンカー装置6を、パッキン8とナット9を外した状態で施工に必要な個数だけ製造しておく。これらアンカー装置6のボルト7の足部側を、ロータリーキルンRの本体胴部2を構成するシェル部材4に所定ピッチで穿たれた多数のボルト挿通孔に、ロータリーキルンRの内側から挿入していく。挿入し終えると、ボルト7の足部にパッキン8を通し、更にナット9を装着して締めつけ固着する。固着が終了した状態で、不定形耐火物を吹き付ける等により耐火物層を形成するのであるが、その場合、アンカー装置6の炉内部側先端を越えて20〜50mm程度厚く積層した状態で不定形耐火物の吹き付けを終了する。そして、不定形耐火物を乾燥して固化することにより施工を完了する。
【0025】
次に、耐火物の損耗などに起因してロータリーキルンの内部補修をする場合を説明する。ロータリーキルンを操業停止後、まず、周壁の外側からナット9及びパッキン8を取り外す。この状態で、シェル部材4におけるアンカー装置6の固着が解除されるので、ロータリーキルンRを回転すると、上部に位置した不定形耐火物5とアンカー装置6とが自重により、次々に脱落、落下すると共に、ロータリーキルンRが幾分傾斜されて配置されているので、落下した不定形耐火物5とアンカー装置6とが回転と共に排出口3側に送られ、ロータリーキルンR外に排出される。このように本実施形態のアンカー装置を用いる場合には、作業者が原則的にロータリーキルンRの内部に入って解体作業することがなく、労力の低減を実現できると共に、発生する粉塵環境に晒されなくとも済むので、作業が著しく楽になる。
【0026】
ロータリーキルンR内部から損耗した不定形耐火物5とアンカー装置6が排出されると、新しく用意したアンカー装置を、上記した施工方法にしたがって損耗個所に施工することにより、修復を完了する。
【0027】
【実施例】
本実施形態のアンカー装置を施工した例について、図6に示す従来技術のアンカーが施工されているロータリーキルン(本体胴部の直径約3000mm、長さ約7000mm)による場合との対比を表1に示す。
【0028】
【表1】

Figure 0003771095
表1に示すように、本実施形態のアンカー装置を施工したロータリーキルンは、不定形耐火物を解体し、アンカー装置を除去した後、新たにアンカー装置を取付け、不定形耐火物を施工するまでの総工数を、従来技術の1/2程度に短縮することができた。特に、作業者に負担の大きいロータリーキルン内での不定形耐火物の解体、アンカー装置の除去作業工数を1/5にでき、しかもこの作業自体がロータリーキルン外で行えるため、作業者を粉塵環境から離隔できて著しく作業環境の改善に寄与できた。
【0029】
〔別実施の形態〕
(1) アンカー装置として、図3、4に示すような形状のものを使用してもよい。すなわち、このアンカー装置6’は、図4に示すように、周囲4辺に低い高さの立ち上がり縁部10aを設けた略長方形状のアンカー取付治具10に、複数個のアンカーを取り付けて構成される。すなわち、アンカー取付治具10の両長辺側立ち上がり縁部10aに、略等間隔で同数個づつ複数のアンカーが溶接接合される(例えば、4個づつ)。尚、個々のアンカー自体は、図2に示すものと同一形状のものを使用でき、又、図4で図番12は補強用のリブである。
【0030】
このアンカー装置6’をロータリーキルンRのシェル部材4に取り付けるには、まず、アンカー取付治具10の長手方向の左右端部近傍2個所に穿たれているボルト挿通孔11にボルト7を挿通し、これをシェル部材4内側に設置する。この場合、予めシェル部材4の周壁に穿たれているボルト挿通孔にボルト7を挿通する。そして、シェル部材4の外側でパッキン8を介してナット9で締めつけてシェル部材4に固着される。この取付け作業は、アンカー装置6’が片側に重量負荷の偏りを生じないことから、作業者にある程度の重量負荷はあるものの取り扱い易く、L形アングルに複数のアンカーを接合した従来のアンカー装置に比べて、本実施形態のアンカー装置を用いればはるかに扱い易く、作業が楽であり、作業効率の向上が図れるものである。
【0031】
尚、このアンカー取付治具を2枚、あるいは更に複数枚を、例えばその長辺側を一体的に接合したような形状であってもよい。その場合は、ボルト挿通孔11は4個所、あるいはそれ以上設けてもよく、短辺側にアンカーを取り付けるようにしてもよい。要は、アンカーを取り付けた際に、片側に重量負荷の偏りを生じないことが実現できる形状であればよい。
【0032】
(2) 更に、図4に示すアンカー取付治具の変形例として、図5に示すような形状のアンカー取付治具10’を用いてもよい。すなわち、このアンカー取付治具10’は平板状をしており、図4のアンカー取付治具10とは立ち上がり縁部を備えていない点で異なる。もっとも、図4のアンカー取付治具10と同様に、アンカー取付治具10’の長手方向の左右端部近傍2個所に、ボルト挿通孔11が穿たれている。そして、アンカー取付治具10’の両長辺側10a’,10a’に略等間隔で同個数(例えば、4個づつ)のアンカーが一体的に溶接接合される。このようにしても、片側に重量負荷の偏りを生じないようにアンカーを取り付けることができるので、本アンカー装置の取付け、取外し作業を行う際に、取り扱い易くて作業が楽になり、作業効率も向上する。
【0033】
尚、図5に示すアンカー取付治具10’の2枚を互いの長辺側を接合した形状であってもよく(その場合、ボルト挿通孔11は4個所設けてもよく、短辺側にアンカーを取り付けてもよい)、あるいは更に多数枚を接合したような形状であってもよい。要は、アンカーを取り付けた際に、片側に重量負荷の偏りを生じないことが実現できる形状であればよい。
【0034】
(3)上記実施形態のアンカー装置は、産業廃棄物の焼却炉としての用途以外にも、金属製錬用、その他の各種産業用のロータリーキルンに適用できる。
【図面の簡単な説明】
【図1】本発明のアンカー装置を用いる炉の一例であるロータリーキルンを示し、(a)は断面図、(b)は(a)のB−B断面図
【図2】本発明のアンカー装置を示し、(a)は図1のロータリーキルンのシェル部材に取付けた状態を示す平面図、(b)は更に不定形耐火物で被覆した状態を示す部分側断面図
【図3】別実施形態に係るアンカー装置を示し、(a)は図1のロータリーキルンのシェル部材に取付けた状態を示す平面図、(b)は更に不定形耐火物で被覆した状態を示す部分側断面図
【図4】図3のアンカー装置に取り付けるアンカー取付治具の斜視図
【図5】更にアンカー取付治具の変形例を示す斜視図
【図6】従来技術のアンカー装置を示し、(a)はロータリーキルンのシェル部材に取付けた状態を示す平面図、(b)は更に不定形耐火物で被覆した状態を示す部分側断面図
【符号の説明】
4 シェル部材
5 不定形耐火物
6a 主軸
6b 枝軸
7 固着手段
10,10’ 固定治具[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an anchor device, a furnace, and an anchor construction method, and more particularly, to an anchor device that can be easily attached and disassembled, a furnace equipped with the anchor device, and an anchor construction method.
[0002]
[Prior art]
Inside the rotary kiln and other industrial furnaces, depending on the application, heat resistant amorphous refractories, bricks, etc. are lined to withstand the high temperatures of combustion (for example, 800-1300 ° C for waste combustion). Yes. Conventionally, when lining an irregular refractory, the anchor is directly attached to the inside of a metal shell member by bolting or welding at intervals of 200 to 300 mm, and the anchor is buried (for example, a furnace) It is formed by spraying an indeterminate refractory to the inside (approx. 20-50 mm from the tip of the anchor) or by pouring vibration.
[0003]
The anchor is formed into a Y shape or a V shape by combining rod-shaped stainless steel, and extends in the two directions from the middle of the main shaft 16a as shown in FIGS. 6 (a) and 6 (b), for example. The branch shaft 16b is configured to include a branch shaft 16c extending in a direction that intersects the branch shaft 16b from one end portion of the main shaft by approximately 90 ° in a side view. The other end of the main shaft 16a is fixed to the shell member 4 by welding or the like. The anchors 16 fixed to the shell member 4 are fixed at regular intervals by shifting the directions of the anchors 16 adjacent to each other by approximately 90 °. From above, the refractory 5 is sprayed to form a coating, and the furnace wall is lined.
[0004]
Anchors formed on the inside of the furnace wall may be densely attached at a short pitch at the time of construction. In addition to requiring a lot of time and labor for the installation work itself, repairing a worn or damaged furnace part However, the removal of the worn or damaged refractory and the removal of the anchor are troublesome. In addition, it takes a long time to install the refractory by attaching the new anchor after removing the anchor, and it takes a considerable amount of time and labor to install and remove the anchor as a whole.
[0005]
Therefore, in order to improve such work, there has been considered a method in which a plurality of anchors are welded and attached to one side of an L-shaped angle in advance, and this angle is bolted to a shell member (Actual Hei 4). -90896). In this method, since the anchor can be attached and detached in units of welded angles, the number of work steps can be reduced as compared to the work of attaching and removing the anchors one by one.
[0006]
[Problems to be solved by the invention]
However, in the above method, a bolt insertion hole is provided on the other side of the L-shaped angle so that it can be fixed to the shell member, and a plurality of anchors are attached to the other side. The work of bringing to the site and fixing to the inside of the shell member is not always easy because the whole has a considerable weight and the weight is uneven on one side. In particular, in the case of a rotary kiln having a cylindrical structure with a diameter of 2 to 3 m that is frequently used for incineration of industrial waste, in order to attach or remove the anchor in a narrow place, attach the anchor in angle units, Even if it can be removed, the work is extremely laborious and time consuming in a poor working environment where a large amount of dust is generated.
[0007]
Therefore, in view of the above-mentioned problems of the prior art, the object of the present invention is easy to install, and moreover, it is possible to firmly apply the refractory coating, and also to facilitate the dismantling work when the furnace wall is worn. It is an object of the present invention to provide an anchor device capable of reducing the number of work steps, a furnace equipped with the anchor device, and an anchor construction method.
[0008]
[Means for Solving the Problems]
The above object can be achieved by the inventions described in the claims. That is, the feature structure of the anchoring device according to the present invention, can be attached to the shell member constituting the furnace wall of the rotary kiln, and a monolithic refractory be coated available-the surface, it is joined by inclined spindle and to A plurality of anchors having a plurality of branch shafts are integrally joined to a fixing means attachable to the shell member ;
The branch shaft and the anchor are an even number, and are attached to the fixing means so that the weights of these anchors are not biased. The fixing means can be attached to the shell member and can be easily disassembled.
The other end of the branch shaft is joined to the main shaft so that the free ends of the even number of the branch shafts are separated from each other and in a direction away from the main shaft. The plurality is integrally joined to the fixing means in a direction away from each other .
[0009]
According to this configuration, since the holding function of the irregular refractory material over a wide range can be secured by the plurality of main shafts and branch shafts of the anchor, the pitch of the fixing means fixed to the shell member can be increased, and the mounting portion to the shell member can be secured. In spite of a simple configuration, it is possible to achieve a significant reduction in installation man-hours, and to achieve a significant reduction in labor and working time. Therefore, since there are few places to remove the anchor device during repair, labor and time required for the removal work can be reduced.
In addition, since the holding function of the refractory material over a wider range can be secured, the pitch of the fixing means fixed to the shell member can be increased, and therefore the number of attachment points of the anchor device to the shell member can be advantageously reduced.
[0010]
As a result, it is possible to provide an anchor device that is easy to install, can be firmly applied with a coating of an irregular refractory, is easy to dismantle when the furnace wall is worn, and can reduce the work man-hours. did it.
[0011]
The other end of the branch shaft is welded to the main shaft so that the free ends of the plurality of branch shafts are separated from each other and the main shaft. It is preferable that a plurality of members are joined to the fixing means in a direction away from each other.
[0012]
According to this configuration, since the holding function of the refractory material over a wider range can be secured, the pitch of the fixing means fixed to the shell member can be increased, and therefore, the number of attachment points of the anchor device to the shell member can be advantageously reduced. .
[0013]
Furthermore, as the anchor device according to the present invention, the surface can be attached to a shell member constituting the furnace wall of the rotary kiln, and the surface thereof can be coated with an indeterminate refractory, and a plurality of the main shaft and the inclined joint are joined thereto. In an anchor device that can be attached to the shell member by integrally joining a plurality of anchors having branch axes to a fixing jig that can be attached to the shell member,
The branch shafts and anchors are an even number, and the weight load of these anchors is attached to the fixing jig without being biased so that the fixing jig can be attached to the shell member and easy to disassemble. It may be configured.
[0014]
Even with this configuration, the pitch of the fixing means that is fixed to the shell member can be increased, the number of attachment points to the shell member can be reduced, and a significant reduction in the number of mounting steps can be achieved regardless of the simple configuration. It is possible to reduce labor and work time. Therefore, since there are few places to remove the anchor device during repair, labor and time required for the removal work can be reduced. Moreover, since the fixing jig joined with multiple anchors can be fixed to the shell member without biasing the weight load on one side, even if the fixing jig joined with the anchor has a considerable weight as a whole Since the weight load on the person is not biased, the construction work becomes easier. Accordingly, it is possible to provide an anchor device that can be easily attached to an anchor, can be firmly applied with a coating of an irregular refractory, can be easily disassembled when the furnace wall is worn, and can reduce the work man-hours. did it.
[0015]
Further, the rotary kiln according to the present invention is characterized in that the anchor device of claim 1 or 2 has a furnace wall that is removably attached to a shell member that constitutes the furnace wall and is covered with an amorphous refractory. There is.
[0016]
According to this configuration, a furnace equipped with an anchor device that is easy to install, can be firmly applied with a refractory coating, and is easy to dismantle when the furnace wall wears down. Could be provided.
In addition, since the furnace wall to which the anchor device is attached is the furnace wall of the rotary kiln, especially in the dismantling work during repairs, the fixing means with the shell member is removed outside the furnace, and the upper part is positioned by rotating the furnace. Since the unshaped refractory and anchor device that peels off sequentially and falls downward, in principle there is no need for an operator to enter the furnace, so the dismantling time can be shortened and the dismantling man-hours can be reduced, The labor can be greatly reduced and the working environment can be remarkably improved.
[0019]
Furthermore, the anchor construction method according to the present invention is characterized in that the anchor device of claim 1 is installed inside the shell member constituting the furnace wall of the rotary kiln and attached and fixed so that it can be disassembled from the outside of the shell member. The purpose is to line an irregular refractory so as to cover the anchor device.
[0020]
According to this configuration, it is easy to attach the anchor device to the furnace wall, and moreover, the refractory coating can be firmly applied, and the dismantling work when the furnace wall is worn becomes easy, and the anchor can reduce the work man-hours for it. We were able to provide a construction method.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described in detail with reference to the drawings. The anchor device of this embodiment and its construction method will be described with reference to an example in which it is attached to a peripheral wall of a rotary kiln that is an example of a furnace. 1A shows a schematic cross-sectional structure of the rotary kiln R, and FIG. 1B shows a BB cross-sectional structure of FIG. The rotary kiln R includes a carry-in port formed with an inlet hood 1 for receiving a workpiece to be processed from the previous process, a rotatable cylindrical body 2, and a discharge port 3 to be sent to the next process after the process. It is prepared for. And the main body trunk | drum 2 is comprised from the shell member 4 which consists of an iron skin etc., and the irregular-shaped refractory material 5 lined by this shell member 4. As shown in FIG. The main body 2 is slightly inclined downward toward the discharge port 3, and during operation, a motor or the like (not shown) is driven via rotation / transmission means provided on the outer periphery of the main body 2. The waste is thrown from the means, and the thrown-in waste is sequentially sent to the discharge port 3 along with the rotation while burning.
[0022]
Although details of the structure of the inlet hood 1 are not shown, a waste input port, an air insertion port, a heating burner, and the like can be attached, and the whole is made of a refractory material. Of course, the waste inlet is configured as a small mere opening, connected to a hopper capable of feeding a large amount of waste, and the like.
[0023]
Although omitted in FIG. 1, an anchor device 6 shown in FIG. 2 is embedded in the amorphous refractory 5 of the main body body 2. That is, FIG. 2A shows a planar structure in a state where the anchor device of the present embodiment is attached to the shell member 4, and FIG. 2B further covers an amorphous refractory to cover the present embodiment. The partial cross-sectional structure of the state which attached the anchor apparatus 6 to the surrounding wall of rotary kiln R is shown. Unlike the conventional one, this anchor device 6 is welded to the head 7a of the bolt 7 which is a fixing means in which four anchors made of rod-shaped stainless steel (SUS 309, 316, etc.) are Y-shaped or V-shaped. Configured. That is, each anchor intersects the branch shaft 6b extending in the two directions from the middle of the main shaft 6a and the branch shaft 6b from one end portion (free end side) of the main shaft 6a by approximately 90 ° in a side view. The branch shaft 6c extends in such a direction, and the bolts are arranged so that the anchors are separated from each other at substantially equal intervals (in the plan view, the main shafts 6a are separated from each other by 90 °). 7 is welded to the head 7a. The bolt 7 is inserted from the inside of the shell member 4 and is fastened to the shell member 4 by tightening with a nut 9 via a packing 8 outside the shell member 4.
[0024]
Next, a method for constructing the anchor device of this embodiment will be briefly described. First, the anchor device 6 shown in FIG. 2 is manufactured in advance in the number necessary for construction with the packing 8 and the nut 9 removed. The foot portions of the bolts 7 of these anchor devices 6 are inserted from the inside of the rotary kiln R into a large number of bolt insertion holes formed at a predetermined pitch in the shell member 4 constituting the main body portion 2 of the rotary kiln R. When the insertion is completed, the packing 8 is passed through the foot portion of the bolt 7, and the nut 9 is further attached and tightened and fixed. A refractory layer is formed by spraying an amorphous refractory after the fixing is completed. In that case, the refractory layer is formed in a state of being laminated thickly by about 20 to 50 mm beyond the tip inside the furnace of the anchor device 6. Finish spraying refractory. Then, the construction is completed by drying and solidifying the amorphous refractory.
[0025]
Next, the case where internal repair of a rotary kiln is caused due to wear of refractory etc. will be described. After stopping the operation of the rotary kiln, first, the nut 9 and the packing 8 are removed from the outside of the peripheral wall. In this state, since the anchor device 6 is not fixed to the shell member 4, when the rotary kiln R is rotated, the amorphous refractory 5 and the anchor device 6 positioned on the upper part are successively dropped and dropped due to their own weight. Since the rotary kiln R is disposed with a slight inclination, the dropped refractory 5 and the anchor device 6 are sent to the discharge port 3 side along with the rotation, and are discharged out of the rotary kiln R. As described above, when the anchor device of the present embodiment is used, the operator does not enter the rotary kiln R in principle and dismantle, so that the labor can be reduced and exposed to the generated dust environment. Since it is not necessary, the work is remarkably easy.
[0026]
When the irregular refractory 5 and the anchor device 6 worn out from the inside of the rotary kiln R are discharged, the repair is completed by constructing the newly prepared anchor device at the wear site according to the construction method described above.
[0027]
【Example】
Table 1 shows a comparison between an example in which the anchor device of the present embodiment was constructed and a case in which a rotary kiln (diameter of the main body is about 3000 mm, length of about 7000 mm) in which the anchor of the prior art shown in FIG. .
[0028]
[Table 1]
Figure 0003771095
As shown in Table 1, the rotary kiln in which the anchor device of the present embodiment was constructed disassembled the irregular refractory, removed the anchor device, newly attached the anchor device, and until the irregular refractory was constructed. The total man-hours could be reduced to about 1/2 of the prior art. In particular, it is possible to reduce the number of man-hours for dismantling the irregular refractory and removing the anchor device in the rotary kiln, which is a heavy burden on the worker, and this work itself can be performed outside the rotary kiln, so that the worker is separated from the dust environment. It was possible to significantly improve the work environment.
[0029]
[Another embodiment]
(1) An anchor device having a shape as shown in FIGS. 3 and 4 may be used. That is, as shown in FIG. 4, this anchor device 6 ′ is constructed by attaching a plurality of anchors to a substantially rectangular anchor attachment jig 10 provided with rising edges 10a having low heights on the four sides. Is done. That is, the same number of anchors are welded and joined to the both long-side rising edges 10a of the anchor mounting jig 10 at substantially equal intervals (for example, four). In addition, each anchor itself can use the same shape as what is shown in FIG. 2, and the number 12 in FIG. 4 is a rib for reinforcement.
[0030]
In order to attach the anchor device 6 'to the shell member 4 of the rotary kiln R, first, the bolts 7 are inserted into the bolt insertion holes 11 formed in the vicinity of the left and right end portions of the anchor attachment jig 10 in the longitudinal direction. This is installed inside the shell member 4. In this case, the bolt 7 is inserted into a bolt insertion hole that is previously drilled in the peripheral wall of the shell member 4. Then, it is fastened to the shell member 4 by tightening with a nut 9 via a packing 8 outside the shell member 4. Since the anchor device 6 ' does not cause a bias in weight load on one side , this attachment work is easy to handle although there is a certain weight load on the operator, and the conventional anchor device in which a plurality of anchors are joined to an L-shaped angle. In comparison, if the anchor device of this embodiment is used, it is much easier to handle, the work is easier, and the work efficiency can be improved.
[0031]
In addition, the shape which joined this anchor attachment jig | tool two pieces, or a further plurality, for example, the long side side integrally may be sufficient. In that case, four or more bolt insertion holes 11 may be provided, and an anchor may be attached to the short side. In short, any shape that can realize that the weight load is not biased on one side when the anchor is attached may be used.
[0032]
(2) Further, as a modification of the anchor mounting jig shown in FIG. 4, an anchor mounting jig 10 ′ having a shape as shown in FIG. 5 may be used. That is, this anchor attachment jig 10 ′ is flat and differs from the anchor attachment jig 10 of FIG. 4 in that it does not have a rising edge. However, similarly to the anchor mounting jig 10 in FIG. 4, bolt insertion holes 11 are formed in two locations near the left and right end portions in the longitudinal direction of the anchor mounting jig 10 ′. Then, the same number (for example, four) of anchors are integrally welded to both the long side sides 10a ′ and 10a ′ of the anchor mounting jig 10 ′ at substantially equal intervals. Even in this way, the anchor can be attached so that the weight load is not biased on one side. Therefore, when attaching and removing the anchor device, it is easy to handle and the work is facilitated, and the work efficiency is improved. To do.
[0033]
5 may have a shape in which the two long sides are joined to each other (in this case, four bolt insertion holes 11 may be provided on the short side). An anchor may be attached), or a shape obtained by joining a large number of sheets may be used. In short, any shape that can realize that the weight load is not biased on one side when the anchor is attached may be used.
[0034]
(3) the anchoring device of the above embodiment, in addition to use as incinerator for industrial waste, can be applied to a rotary kiln for metal smelting, various other industries.
[Brief description of the drawings]
FIG. 1 shows a rotary kiln that is an example of a furnace using the anchor device of the present invention, wherein (a) is a cross-sectional view, and (b) is a cross-sectional view taken along line BB of (a). FIG. 3A is a plan view showing a state where the rotary kiln is attached to the shell member of FIG. 1, and FIG. 3B is a partial side sectional view showing a state where the rotary kiln is further covered with an irregular refractory. 1A is a plan view showing a state where the anchor device is attached to the shell member of the rotary kiln shown in FIG. 1, and FIG. 3B is a partial side sectional view showing a state where the anchor device is further covered with an irregular refractory. FIG. 5 is a perspective view showing a modified example of the anchor mounting jig. FIG. 6 shows a conventional anchor device, and FIG. FIG. Partial side sectional view showing a state coated with further castable refractory EXPLANATION OF REFERENCE NUMERALS
4 Shell member 5 Indeterminate refractory 6a Main shaft 6b Branch shaft 7 Fixing means 10, 10 'Fixing jig

Claims (4)

ロータリーキルンの炉壁を構成するシェル部材に取付け可能、かつ不定形耐火物を表面に被覆可能であって、主軸とこれに傾斜して接合されている複数の枝軸とを有するアンカーの複数個を、前記シェル部材に取付け可能な固着手段に一体的に接合されているアンカー装置において、
前記枝軸とアンカーとが偶数個からなり、これらアンカーの重量負荷が偏らないように前記固着手段に取り付けられて、この固着手段が前記シェル部材に取付け可能および解体容易になっていると共に、
偶数個の前記枝軸の自由端どうしが互いに離間する方向で、かつ前記主軸とも離間する方向になるよう前記枝軸の他端が前記主軸に接合されていると共に、これらを備えた前記アンカーの複数個が互いに離間する方向に前記固着手段に一体的に接合されていることを特徴とするアンカー装置。
Attachable to the shell member constituting the furnace wall of the rotary kiln, and a cover available-the monolithic refractory to the surface, a plurality of anchors and a plurality of branch shafts are joined by inclined spindle and to In an anchor device integrally joined to a fixing means attachable to the shell member ,
The branch shaft and the anchor are an even number, and are attached to the fixing means so that the weight load of these anchors is not biased, and the fixing means can be attached to the shell member and can be easily disassembled.
The other end of the branch shaft is joined to the main shaft so that the free ends of the even number of the branch shafts are separated from each other and in a direction away from the main shaft. An anchor device characterized in that a plurality of members are integrally joined to the fixing means in a direction away from each other .
ロータリーキルンの炉壁を構成するシェル部材に取付け可能、かつ不定形耐火物を表面に被覆可能であって、主軸とこれに傾斜して接合されている複数の枝軸とを有するアンカーの複数個を、前記シェル部材に取付け可能な固定治具に一体的に接合して、前記シェル部材に取付け可能になっているアンカー装置において、
前記枝軸とアンカーとが偶数個からなり、これらアンカーの重量負荷が偏ることなく前記固定治具に取り付けられて、この固定治具が前記シェル部材に取付け可能および解体容易になっていることを特徴とするアンカー装置。
A plurality of anchors that can be attached to a shell member constituting a furnace wall of a rotary kiln and can be coated with an irregular refractory on the surface and have a main shaft and a plurality of branch shafts that are inclined and joined thereto. In the anchor device that is integrally attached to a fixing jig that can be attached to the shell member and is attachable to the shell member,
The branch shaft and the anchor are an even number, and the weight load of these anchors is attached to the fixing jig without being biased, and the fixing jig can be attached to the shell member and is easily disassembled. Anchor device characterized .
請求項1又は2のアンカー装置が、炉壁を構成するシェル部材に解体可能に取り付けられていると共に不定形耐火物によって被覆された炉壁を有するロータリーキルン炉。The rotary kiln furnace which has the furnace wall which the anchor apparatus of Claim 1 or 2 was attached to the shell member which comprises a furnace wall so that disassembly was possible, and was coat | covered with the amorphous refractory. 請求項1のアンカー装置を、ロータリーキルンの炉壁を構成するシェル部材内側に設置すると共にシェル部材外部から解体可能に取付け固定し、次いで前記アンカー装置を被覆するように不定形耐火物を内張りするアンカー施工方法。The anchor device according to claim 1 is installed inside a shell member constituting a furnace wall of a rotary kiln, and is attached and fixed so that it can be dismantled from the outside of the shell member. Construction method.
JP30267399A 1999-10-25 1999-10-25 Anchor device, rotary kiln furnace and anchor construction method Expired - Fee Related JP3771095B2 (en)

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