JPS6349319Y2 - - Google Patents
Info
- Publication number
- JPS6349319Y2 JPS6349319Y2 JP1982161708U JP16170882U JPS6349319Y2 JP S6349319 Y2 JPS6349319 Y2 JP S6349319Y2 JP 1982161708 U JP1982161708 U JP 1982161708U JP 16170882 U JP16170882 U JP 16170882U JP S6349319 Y2 JPS6349319 Y2 JP S6349319Y2
- Authority
- JP
- Japan
- Prior art keywords
- rebound loss
- nozzle
- prevention plate
- refractory material
- rebound
- 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.)
- Expired
Links
- 230000002265 prevention Effects 0.000 claims description 18
- 239000007921 spray Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 description 17
- 230000008439 repair process Effects 0.000 description 13
- 238000005507 spraying Methods 0.000 description 13
- 238000009415 formwork Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Nozzles (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は転炉、取鍋、電気炉、樋、タンデイシ
ユ等、各種窯炉の内張りを吹付補修する際に、吹
付耐火材料のリバウンドロスを低減するための吹
付ノズルの改良に関する。[Detailed description of the invention] Industrial application field This invention reduces the rebound loss of sprayed refractory materials when spraying and repairing the lining of various furnaces such as converters, ladles, electric furnaces, gutters, and tundishes. This invention relates to improvements in spray nozzles for
従来の技術
最近、省資源の観点から各種窯炉の吹付作業の
際に、発生するリバウンドロスを低減することが
強く求められている。従来、吹付作業におけるリ
バウンドロスは一般に10〜30％程度発生してい
た。この対策として、おもに樋の吹付補修を対象
として次のことが実施されている。穴あき鋼板で
製作した型枠を樋損傷ライニングの内側にセツト
し、型枠と損傷ライニングとの空隙に吹付耐火材
料を吹付け充填する。養生後、型枠を取外して補
修を完了する。しかし、この方法には以下の欠点
がある。BACKGROUND OF THE INVENTION Recently, from the viewpoint of resource conservation, there has been a strong demand for reducing rebound loss that occurs during spraying operations in various furnaces. Conventionally, rebound loss during spraying operations generally occurred at around 10 to 30%. As a countermeasure to this problem, the following measures have been taken, mainly for spraying repairs on gutters. A formwork made of perforated steel plate is set inside the damaged gutter lining, and the gap between the formwork and the damaged lining is sprayed and filled with spray-on refractory material. After curing, remove the formwork and complete the repair. However, this method has the following drawbacks.
(1) 樋側壁部のように、型枠と損傷ライニングと
の空隙に吹付耐火材料を盛り上げていく場合は
良いが、樋敷部のように、水平部を吹付補修す
るには充填が特定の吹付個所からだけでは十分
に行なえない。他の窯炉では天井部も同様に吹
付補修が困難である。(1) It is OK to fill up the gap between the formwork and the damaged lining with sprayed fireproofing material, such as on the side walls of a gutter. It is not sufficient to spray only from the sprayed area. In other furnaces, it is also difficult to repair the ceiling by spraying.
(2) ライニングと型枠の空隙は吹付ノズルが挿入
できるだけの幅が最低必要となり、必要以上の
吹付を行なわなければならない場合がある。(2) The gap between the lining and the formwork must be at least wide enough to insert the spray nozzle, and it may be necessary to spray more than necessary.
(3) 型枠の取付け、取外しに時間がかかる。(3) It takes time to install and remove formwork.
このように、従来のリバウンドロス低減を計つ
たものには問題が多く、簡便で汎用性があり、リ
バウンドロス低減を計れる装置が求められてい
た。 As described above, there are many problems with conventional methods for measuring rebound loss reduction, and there has been a need for a simple and versatile device capable of measuring rebound loss reduction.
考案が解決しようとする問題点
本考案はこのような問題を解決して、簡便で汎
用性があり、リバウンドロス低減を実現した吹付
ノズルを提供することを目的とする。Problems to be Solved by the Invention The purpose of the invention is to solve these problems and provide a spray nozzle that is simple, versatile, and achieves reduced rebound loss.
問題点を解決するための手段
本考案の要旨は、ノズルの先端に設けた円錐筒
の開放端に、ノズル軸線にほヾ垂直に多数の開孔
を設けたリバウンドロス防止板を装着してなる、
吹付耐火材料リバウンドロス防止用吹付ノズルに
ある。Means to Solve the Problems The gist of the present invention is that a rebound loss prevention plate is attached to the open end of a conical cylinder provided at the tip of the nozzle, with a large number of holes perpendicular to the nozzle axis. ,
Sprayed refractory material is present in the spray nozzle to prevent rebound loss.
本考案の具体例を図面にもとずいて詳細に説明
する。第１図に示すように、ノズル２の先端３に
取付けた円錐筒４の開放端５に、ノズル２の軸線
にほヾ垂直に多数の開孔７を設けたリバウンドロ
ス防止板６を装着したリバウンドロス防止用吹付
ノズル１である。 A specific example of the present invention will be explained in detail based on the drawings. As shown in FIG. 1, a rebound loss prevention plate 6 having a large number of openings 7 perpendicular to the axis of the nozzle 2 is attached to the open end 5 of a conical cylinder 4 attached to the tip 3 of the nozzle 2. This is a spray nozzle 1 for preventing rebound loss.
このように構成した吹付耐火材料リバウンドロ
ス防止用吹付ノズル１（以下、単に吹付ノズル１
と呼ぶ）を炉壁損傷面２１に対して、リバウンド
ロス防止板６を略平行に向け、所定の吹付補修厚
αを隔ててセツトする。吹付ノズル１を炉壁損傷
面２１との間隔αを保ちつつ、同一水平レベルで
移動（回転）させる。同時に耐火材料２２をノズ
ル２より吹付ける。炉壁損傷面２１に衝突した耐
火材料２２は大部分は付着するが、10〜30％はリ
バウンドする。リバウンドした耐火材料２２はリ
バウンドロス防止板６と円錐筒４に再衝突して炉
壁損傷面２１とリバウンドロス防止板６と円錐筒
４との間にはね返り、次々と吹付けられ炉壁補修
面２１に付着する耐火材料２２中に捕捉され炉壁
補修面２１に吹付けられ、リバウンドロスが低減
できる。また、吹付補修施工面２３はリバウンド
ロス防止板６が摺動するので平滑に仕上がる。耐
火材料２２を搬送した圧縮空気はリバウンドロス
防止板３の周辺および開孔７より大気中に拡散す
る。同一水平レベル範囲の補修が完了すればその
上段の補修を同様に行なう。 Spraying nozzle 1 for preventing rebound loss of sprayed refractory material configured as described above (hereinafter simply referred to as spraying nozzle 1)
The rebound loss prevention plate 6 is oriented substantially parallel to the damaged surface 21 of the furnace wall, and is set at a distance of a predetermined spray repair thickness α. The spray nozzle 1 is moved (rotated) at the same horizontal level while maintaining the distance α from the damaged furnace wall surface 21. At the same time, a refractory material 22 is sprayed from the nozzle 2. Most of the refractory material 22 that collided with the damaged surface 21 of the furnace wall adheres, but 10 to 30% rebounds. The rebounded refractory material 22 collides with the rebound loss prevention plate 6 and the conical cylinder 4 again, bounces between the furnace wall damaged surface 21, the rebound loss prevention plate 6, and the conical cylinder 4, and is sprayed one after another to repair the furnace wall repair surface. It is captured in the refractory material 22 adhering to the refractory material 21 and sprayed onto the furnace wall repair surface 21, thereby reducing rebound loss. In addition, since the rebound loss prevention plate 6 slides on the spray repair work surface 23, it is finished smoothly. The compressed air that has carried the refractory material 22 is diffused into the atmosphere around the rebound loss prevention plate 3 and through the openings 7. Once the repair in the same horizontal level range is completed, the repair on the upper level is done in the same way.
リバウンドロス防止板６の大きさは、１1/2イ
ンチ径のノズル２で円錐筒４の長さ200mmの場合、
耐火材料２２の吹付の際のリバウンド範囲をカバ
ーするために、耐火材料２２の吹付け範囲として
は300mmφ程度であるが、700mmφ程度が良い。大
きすぎると作動範囲が制限される。また、形状は
円形に限らず四角形、多角形等が適用できる。リ
バウンドロス防止板６の開孔７は耐火材料２２中
の粒径の大きいもの（３mmφ前後）がリバウンド
ロスとなるので３mmφより小さい径が良い。リバ
ウンドロス防止板６の開孔７の占める面積が５％
未満では、耐火材料２２を搬送した圧縮空気がス
ムーズに排気できず、圧縮空気はリバウンドロス
防止板６の周辺開放部２４より耐火材料２２中の
微粉、リバウンドした粒とともに吹き出る。30％
を超えると耐火材料２２中の微粉がこぼれ出てし
まう。従つて、耐火材料２２の微粉の飛散および
粒のリバウンドロスを最少とする圧縮空気の排気
拡散のためのリバウンドロス防止板６の開孔７の
占める面積は５〜30％が良い。開孔７の形状は円
形、だ円形、四角形、多角形等で配列も千鳥、並
列等いずれでもよい。 The size of the rebound loss prevention plate 6 is, when the nozzle 2 has a diameter of 11/2 inches and the length of the conical tube 4 is 200 mm.
In order to cover the rebound range when spraying the refractory material 22, the spraying range of the refractory material 22 is approximately 300 mmφ, but preferably approximately 700 mmφ. If it is too large, the operating range will be limited. Further, the shape is not limited to a circle, but may be a square, a polygon, or the like. The openings 7 of the rebound loss prevention plate 6 should preferably have a diameter smaller than 3 mmφ, since large particles (about 3 mmφ) in the refractory material 22 cause rebound loss. The area occupied by the openings 7 of the rebound loss prevention plate 6 is 5%.
If the air pressure is less than 10, the compressed air conveying the refractory material 22 cannot be exhausted smoothly, and the compressed air blows out from the peripheral opening 24 of the rebound loss prevention plate 6 together with the fine powder and rebound particles in the refractory material 22. 30%
If it exceeds this, the fine powder in the refractory material 22 will spill out. Therefore, the area occupied by the openings 7 of the rebound loss prevention plate 6 for exhaust diffusion of compressed air to minimize scattering of fine powder and rebound loss of grains of the refractory material 22 is preferably 5 to 30%. The shape of the openings 7 may be circular, oval, square, polygonal, etc., and the arrangement may be staggered, parallel, etc.
リバウンドロス防止板６には、曲面の炉壁（取
鍋、電気炉）を補修対象とする場合、曲面を適用
すると良い。 When repairing a curved furnace wall (ladle, electric furnace), it is preferable to apply a curved surface to the rebound loss prevention plate 6.
リバウンドロス防止板６はこの他に、吹付補修
を完了した吹付補修施工面２３に押し付けること
で吹付られた耐火材料２２をより緻密にすること
ができる。 In addition, the rebound loss prevention plate 6 can make the sprayed fireproof material 22 more dense by pressing it against the spraying repair construction surface 23 that has completed the spraying repair.
本考案の吹付ノズル１を保持する吹付装置は従
来の吹付装置でよく、それに公知の走行装置ある
いは回転走行装置を備えたものを使用する。 The spray device for holding the spray nozzle 1 of the present invention may be a conventional spray device equipped with a known traveling device or rotary traveling device.
考案の効果
以上述べた如く、本考案によるリバウンドロス
防止用吹付ノズルは損傷炉壁の吹付補修に際して
リバウンドロスの低減が図れ、型枠の取付、取り
はずし等の作業がなく、簡便で各種窯炉の吹付補
修に適用できる汎用性がある。Effects of the invention As described above, the spray nozzle for preventing rebound loss according to the present invention can reduce rebound loss when repairing damaged furnace walls by spraying, does not require work such as installing and removing formwork, and is simple and suitable for use in various furnaces. It is versatile enough to be applied to spray repairs.
第１図は本考案にかかるリバウンドロス防止用
吹付ノズルの吹付要領正面図。
図中、１…リバウンドロス防止用吹付ノズル、
２…ノズル、４…円錐筒、５…開放端、６…リバ
ウンドロス防止板、７…リバウンドロス防止板６
の開孔。
FIG. 1 is a front view of the spraying procedure of the rebound loss prevention spray nozzle according to the present invention. In the figure, 1...Blowing nozzle for preventing rebound loss,
2... Nozzle, 4... Conical tube, 5... Open end, 6... Rebound loss prevention plate, 7... Rebound loss prevention plate 6
aperture.
Claims (1)
に、ノズル２の軸線にほヾ垂直に多数の開孔７を
設けたリバウンドロス防止板６を装着してなる、
吹付耐火材料リバウンドロス防止用吹付ノズル。 Open end 5 of a conical cylinder 4 provided at the tip 3 of the nozzle 2
A rebound loss prevention plate 6 having a large number of openings 7 perpendicular to the axis of the nozzle 2 is attached to the nozzle 2.
A spray nozzle for preventing rebound loss of sprayed fireproof materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16170882U JPS5965775U (en) | 1982-10-27 | 1982-10-27 | Spraying nozzle for preventing rebound loss of sprayed fireproof materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16170882U JPS5965775U (en) | 1982-10-27 | 1982-10-27 | Spraying nozzle for preventing rebound loss of sprayed fireproof materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5965775U JPS5965775U (en) | 1984-05-02 |
| JPS6349319Y2 true JPS6349319Y2 (en) | 1988-12-19 |
Family
ID=30355306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16170882U Granted JPS5965775U (en) | 1982-10-27 | 1982-10-27 | Spraying nozzle for preventing rebound loss of sprayed fireproof materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5965775U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS549882U (en) * | 1977-06-24 | 1979-01-23 |
-
1982
- 1982-10-27 JP JP16170882U patent/JPS5965775U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS549882U (en) * | 1977-06-24 | 1979-01-23 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5965775U (en) | 1984-05-02 |
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