JPH05230668A - Gas exhaust device for vertical - Google Patents
Gas exhaust device for verticalInfo
- Publication number
- JPH05230668A JPH05230668A JP3629992A JP3629992A JPH05230668A JP H05230668 A JPH05230668 A JP H05230668A JP 3629992 A JP3629992 A JP 3629992A JP 3629992 A JP3629992 A JP 3629992A JP H05230668 A JPH05230668 A JP H05230668A
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- dryer
- gas
- steel belt
- hot air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Chemical Treatment Of Metals (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、走行する鋼帯の両面に
熱風を吹き付けて乾燥するドライヤにおける熱風の排出
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for discharging hot air in a dryer which blows hot air onto both sides of a running steel strip to dry it.
【０００２】[0002]
【従来技術】表面処理後の鋼帯に防蝕用あるいは塗装下
地処理のためにクロム酸のような化学水溶液を塗布した
後の乾燥は、乾燥炉内に配置した吹込みヘッダーから走
行する鋼帯の両側に熱風を吹き付けることによって行な
われている。2. Description of the Related Art Drying after coating a steel strip after surface treatment with a chemical aqueous solution such as chromic acid for anticorrosion or as a coating pretreatment is performed on a steel strip running from a blower header arranged in a drying furnace. It is done by blowing hot air on both sides.
【０００３】この乾燥炉は、箱型の耐火構造物とし、鋼
帯の通過部分のみに僅かな間隙を有する開口を設けて熱
風が極力吹き出さない構造としている。This drying furnace is a box-shaped refractory structure, and has a structure in which an opening having a slight gap is provided only in a passage portion of a steel strip so that hot air is not blown out as much as possible.
【０００４】しかし、この開口部における通過鋼帯との
間の間隙をいくら調整しても、炉内圧やドラフトにより
この熱風の吹き出しを防ぐことはできず、ドライヤ出口
周辺の機器に対して熱風対策のための格別の構造体を設
ける必要がある。このための構造体の設置は大規模設備
となり、乾燥装置の設備効率上好ましくない問題があ
る。However, no matter how much the gap between the opening and the passing steel strip is adjusted, it is impossible to prevent the hot air from being blown out by the furnace pressure and the draft, and the hot air is taken as a countermeasure against the equipment around the dryer outlet. It is necessary to provide a special structure for. Installation of the structure for this purpose requires large-scale equipment, which is not preferable in terms of equipment efficiency of the dryer.
【０００５】一方、メッキ鋼帯合金化炉用として、出口
開口部にシール用流体の導入量を調整するシール装置が
ある。このシール機構は、例えば、特開昭６１−１３０
４７９号公報にも開示されているように、メッキ鋼帯の
合金化処理炉の鋼帯出口に内圧を調整するためのガス導
入によって外部からの空気の侵入を抑制しようとするも
のである。On the other hand, for a galvanized steel strip alloying furnace, there is a sealing device for adjusting the amount of the sealing fluid introduced into the outlet opening. This sealing mechanism is disclosed in, for example, Japanese Patent Laid-Open No. 61-130.
As disclosed in Japanese Patent No. 479, it is intended to suppress the invasion of air from the outside by introducing gas for adjusting the internal pressure at the steel strip outlet of the alloying treatment furnace for galvanized steel strip.
【０００６】このメッキ鋼帯合金化炉と同様に、乾燥炉
の鋼帯の出口に、炉内に吹き込まれた熱風を排出するこ
とによって外気への熱風の噴出を防止するシール機構を
配置することも検討された。Similar to this galvanized steel strip alloying furnace, a sealing mechanism is provided at the outlet of the steel strip of the drying furnace to prevent the hot air from being blown into the outside air by discharging the hot air blown into the furnace. Was also considered.
【０００７】しかし、このシール機構の乾燥炉への採用
に際しては、メッキ鋼帯合金化炉の場合と異なって、炉
内圧が高く、さらに鋼帯の通過に伴うドラフト効果によ
って鋼帯出口の開口からの熱風の漏出は避けることがで
きない。また、合金化炉の場合には、加熱後冷却設備を
具備しているので、多少の熱風吹出しは設備的に影響を
与えない。However, when this sealing mechanism is adopted in the drying furnace, unlike the case of the galvanized steel strip alloying furnace, the internal pressure of the furnace is high and the draft effect associated with the passage of the steel strip causes the steel strip to exit from the opening. The leakage of hot air is unavoidable. Further, in the case of the alloying furnace, since the cooling system after heating is provided, some blowing of hot air does not affect the facility.
【０００８】また、処理装置において、蛇行やＣぞりと
呼ばれる出側鋼帯の幅方向の曲がりが発生し、これらの
鋼帯の形状により開口部を狭くするとシャッタに接触し
て板疵が発生し、成品に悪影響を与えていた。これを回
避するため、流体シール及びシャッタと鋼帯の間隙は広
くして使用され、排ガスのシールは完全には行われず、
周辺の機器の防熱対策が従来通り必要となり、作業環境
もあまり改善されてはいなかった。Further, in the processing device, bending in the width direction of the outgoing steel strip called meandering or C-sliding occurs, and if the opening portion is narrowed due to the shape of these steel strips, it contacts the shutter to cause plate flaws. However, the product was adversely affected. In order to avoid this, the gap between the fluid seal and the shutter and the steel strip is widened, and the exhaust gas is not completely sealed.
As in the past, heat protection measures for surrounding equipment were required, and the work environment had not been improved so much.
【０００９】[0009]
【発明が解決しようとする課題】本発明の目的は、鋼帯
のドライヤにおける鋼帯出口開口からの熱風の漏出を効
率よく防止するシール機構を有する熱風排出装置を提供
することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a hot air discharge device having a sealing mechanism for efficiently preventing leakage of hot air from a steel strip outlet opening in a steel strip dryer.
【００１０】[0010]
【課題を解決するための手段】本発明は、走行する鋼帯
両面に熱風を吹付けて鋼帯を乾燥する竪型ドライヤの熱
風排出装置であって、同ドライヤの鋼帯出口付近に一次
排気ダクトを設け、ドライヤの鋼帯出口の外側上方位置
に鋼帯両面に対してシール用ガスを噴出するシール装置
を設け、同シール装置の上方位置に二次排気ダクトを設
け、さらに同二次排気ダクトのフードの鋼帯出口に間隙
調整のシャッタを設けたことを特徴とする。SUMMARY OF THE INVENTION The present invention is a hot air discharge device for a vertical dryer that blows hot air to both sides of a running steel strip to dry the steel strip. A duct is provided, a sealing device is installed above the outside of the steel strip outlet of the dryer to eject a sealing gas to both sides of the steel strip, and a secondary exhaust duct is provided above the sealing device. It is characterized in that a shutter for gap adjustment is provided at the steel strip outlet of the hood of the duct.
【００１１】[0011]
【作用】炉内の鋼帯両面に吹付けられた熱風は一次排気
ダクトにより排出され、シール装置から吹き込まれたシ
ール用のガスは、出口シャッタの作用によって調整され
たフード内の圧力と二次排気ダクトからの排出によって
排出され、鋼帯出口からガスが噴出することはない。The hot air blown on both sides of the steel strip in the furnace is discharged by the primary exhaust duct, and the sealing gas blown from the sealing device is heated by the action of the outlet shutter to the pressure inside the hood and the secondary gas. It is discharged by discharge from the exhaust duct, and no gas is ejected from the steel strip outlet.
【００１２】[0012]
【実施例】図１は本発明に係るドライヤのガス排出装置
の実施例の概要を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an outline of an embodiment of a gas discharge device for a dryer according to the present invention.
【００１３】同図において、１は図示しない化学処理槽
からの鋼帯Ｓの通過路の両側に高温ガスを吹き付けるた
めのヘッダー２を配置した竪型乾燥炉を示す。３は乾燥
炉１内の鋼帯出口開口４近傍に配置された一次排気ダク
トを示し、ヘッダー２によって鋼帯両面に吹付けられた
熱風は、矢印に示すように鋼帯に衝突後上昇して、その
大部分が一次排気ダクト３から排出され、乾燥炉１内に
おける鋼帯出口開口４付近の炉内圧は、略外気圧に等し
い圧力に低下している。５は乾燥炉１の鋼帯出口４の外
側上方位置に鋼帯Ｓの通過に十分な間隙を設けて配置さ
れたシール装置を示す。このシール装置５からは、ドラ
イヤ本体からの排ガス又は大気がシール用ガスとして開
口４に向かって吹き込まれる。このシール装置５の上方
位置にはフード６が設けられ、このフード６の複数箇所
には二次排気ダクト７が設けられ、さらに鋼帯出口８に
は出口の間隙を調整するためのシャッタ装置９が設けら
れている。シール装置５から吹き込まれたシール用のガ
スは炉内に設けた一次排気ダクト３に、矢印で示すよう
に、一部は炉内に入り、他はフード６内に入るが、シャ
ッタ装置９によるフ−ド６の鋼帯出口８の間隙の調整に
よってフード内の内圧は調整され、二次排気ダクト７に
よって全てが炉外に排出されて、フ−ド６の鋼帯出口８
からのシールガスの漏出はない。In the figure, reference numeral 1 denotes a vertical drying furnace in which headers 2 for spraying high temperature gas are arranged on both sides of a passage for a steel strip S from a chemical treatment tank (not shown). Reference numeral 3 denotes a primary exhaust duct arranged in the vicinity of the steel strip outlet opening 4 in the drying furnace 1, and the hot air blown on both sides of the steel strip by the header 2 rises after colliding with the steel strip as shown by the arrow. Most of the gas is discharged from the primary exhaust duct 3, and the furnace internal pressure in the vicinity of the steel strip outlet opening 4 in the drying furnace 1 is reduced to a pressure substantially equal to the external atmospheric pressure. Reference numeral 5 denotes a sealing device which is arranged above the outer side of the steel strip outlet 4 of the drying furnace 1 with a sufficient gap for passage of the steel strip S. From the sealing device 5, exhaust gas from the dryer body or the atmosphere is blown toward the opening 4 as a sealing gas. A hood 6 is provided above the sealing device 5, secondary exhaust ducts 7 are provided at a plurality of positions of the hood 6, and a steel strip outlet 8 is provided with a shutter device 9 for adjusting a gap between the outlets. Is provided. The sealing gas blown from the sealing device 5 enters the primary exhaust duct 3 provided in the furnace as shown by an arrow, part of which enters the furnace, and the other enters the hood 6, which is caused by the shutter device 9. By adjusting the gap of the steel strip outlet 8 of the hood 6, the internal pressure in the hood is adjusted, and the secondary exhaust duct 7 discharges all of it to the outside of the furnace.
There is no leakage of seal gas from the.
【００１４】ここで、ダクト間に排気ファンを設置し、
強制的に排出しても良い。Here, an exhaust fan is installed between the ducts,
It may be forcibly discharged.
【００１５】また、本装置を炉圧によっては乾燥炉１の
下部にも配設することで、下部熱風吹き出し防止の効果
を充分に期待できる。Further, by arranging this apparatus also in the lower part of the drying furnace 1 depending on the furnace pressure, the effect of preventing the blowing of the lower hot air can be sufficiently expected.
【００１６】[0016]
【発明の効果】本発明によって、以下の効果が奏せされ
る。The present invention has the following effects.
【００１７】（１）ドライヤのみではなく、排気フード
内の圧力制御可能な二次排気装置を配設したことによ
り、ドライヤ上部からの熱風の吹き出しはなくなる。(1) Not only the dryer but also the secondary exhaust device capable of controlling the pressure in the exhaust hood is provided, so that hot air is not blown from the upper part of the dryer.
【００１８】（２）したがって、周辺機器に断熱保護装
置を設けることなく、ドライヤに近接して配置できるの
で、設備レイアウトがコンパクトとなり、設備費は大幅
に削減できる。(2) Therefore, since the peripheral equipment can be arranged close to the dryer without providing a heat insulation protection device, the equipment layout can be made compact and the equipment cost can be greatly reduced.
【図１】 本発明に係るドライヤのガス排出装置の実施
例の概要を示す。FIG. 1 shows an outline of an embodiment of a gas discharge device for a dryer according to the present invention.
１ 竪型乾燥炉 ２ 乾燥ガス吹付け用ヘッダー ３ 一次排気ダクト ４ 乾燥炉の鋼帯出口開口 ５ シール装置 ６ フード ７ 二次排気ダクト ８ フードの鋼帯出口 ９ シャッタ装置 1 Vertical Drying Furnace 2 Dry Gas Spraying Header 3 Primary Exhaust Duct 4 Drying Furnace Steel Strip Outlet Opening 5 Sealing Device 6 Hood 7 Secondary Exhaust Duct 8 Hood Steel Strip Outlet 9 Shutter Device
Claims (1)
を形成し、この炉体内に鋼帯を走行させ、この鋼帯の両
面に熱風を吹付けて鋼帯を乾燥する竪型ドライヤで、鋼
帯に吹付け後の気体をドライヤ外に排出する排出装置に
おいて、ドライヤの出口の鋼帯面に所定の間隙を設けて
流体シール装置を対設し、この流体シール装置の上方に
流体シール及び前記ドライヤより発生する気体を炉外へ
排出する排気ダクトに連結した排気フードと、この上方
に排気フードと鋼帯との間隙から吹き出す気体を極力減
少させるシャッタ装置を配設したことを特徴とする竪型
ドライヤの気体排出装置。Claim: What is claimed is: 1. A box-shaped refractory is stretched on its inner surface to form a furnace body, a steel strip is run in the furnace body, and hot air is blown to both sides of the steel strip to dry the steel strip. In a vertical dryer, in a discharge device that discharges the gas that has been blown onto the steel strip to the outside of the dryer, a fluid seal device is installed opposite the steel strip surface at the outlet of the dryer with a predetermined gap. A fluid seal and an exhaust hood connected to an exhaust duct for discharging the gas generated from the dryer to the outside of the furnace, and a shutter device for reducing the gas blown out from the gap between the exhaust hood and the steel strip as much as possible are arranged above this. A vertical dryer gas discharge device characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3629992A JP2651309B2 (en) | 1992-02-24 | 1992-02-24 | Gas dryer for vertical dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3629992A JP2651309B2 (en) | 1992-02-24 | 1992-02-24 | Gas dryer for vertical dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05230668A true JPH05230668A (en) | 1993-09-07 |
| JP2651309B2 JP2651309B2 (en) | 1997-09-10 |
Family
ID=12465941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3629992A Expired - Fee Related JP2651309B2 (en) | 1992-02-24 | 1992-02-24 | Gas dryer for vertical dryer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2651309B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190060952A (en) | 2016-09-28 | 2019-06-04 | 쥬가이로 고교 가부시키가이샤 | Shutter mechanism of belt-like work processing equipment |
-
1992
- 1992-02-24 JP JP3629992A patent/JP2651309B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190060952A (en) | 2016-09-28 | 2019-06-04 | 쥬가이로 고교 가부시키가이샤 | Shutter mechanism of belt-like work processing equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2651309B2 (en) | 1997-09-10 |
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