JPH0251243U - - Google Patents
Info
- Publication number
- JPH0251243U JPH0251243U JP12729588U JP12729588U JPH0251243U JP H0251243 U JPH0251243 U JP H0251243U JP 12729588 U JP12729588 U JP 12729588U JP 12729588 U JP12729588 U JP 12729588U JP H0251243 U JPH0251243 U JP H0251243U
- Authority
- JP
- Japan
- Prior art keywords
- bit
- hollow rod
- hole
- hollow
- vent hole
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims 1
- 238000005553 drilling Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
Landscapes
- Blast Furnaces (AREA)
Description
第１図は本考案のビツト付中空ロツドの先端部
を示す断面図、第２図は従来のビツト付中空ロツ
ドの先端部を示す断面図、第３図は一般の出銑口
開孔機の概略正面図である。
１……出銑口開孔機、２……ビツト、２ａ……
中空室、２ｂ……側面噴出孔、３……切刃、３ａ
……中央部噴出孔、９……中空ロツド、９ａ……
通気孔、１８……鋼球。
Fig. 1 is a sectional view showing the tip of the hollow rod with a bit of the present invention, Fig. 2 is a sectional view showing the tip of a conventional hollow rod with a bit, and Fig. 3 is a sectional view of the tip of a conventional tap hole opening machine. It is a schematic front view. 1...Tackle hole opening machine, 2...Bit, 2a...
Hollow chamber, 2b... Side jet hole, 3... Cutting blade, 3a
...Central blowout hole, 9...Hollow rod, 9a...
Vent hole, 18... steel ball.
Claims (1)
上記中空ロツドの通気孔と連通する噴出孔を穿つ
たビツトをネジ結合により着脱自在に連結した出
銑口開孔機用のビツト付中空ロツドにおいて、上
記ビツトの内部に噴出孔と連通すると共に上記中
空ロツドの通気孔と連通する中空室を設け、上記
中空室内に上記通気孔および噴出孔の各内径より
も大なる外径を有する逆流防止用の鋼球またはセ
ラミツク球を移動自在に内在させてなることを特
徴とする出銑口開孔起用のビツト付中空ロツド。 A hollow rod with a bit for a taphole drilling machine, in which a bit with a jet hole communicating with the air hole of the hollow rod is removably connected to the tip of the hollow rod with a vent hole in the center by a screw connection. A hollow chamber is provided inside the bit and communicates with the vent hole of the hollow rod, and the hollow chamber has a backflow prevention device having an outer diameter larger than the inner diameter of the vent hole and the blow hole. A hollow rod with a bit for opening a taphole, characterized by having a movable steel or ceramic ball therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12729588U JPH0251243U (en) | 1988-09-30 | 1988-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12729588U JPH0251243U (en) | 1988-09-30 | 1988-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0251243U true JPH0251243U (en) | 1990-04-10 |
Family
ID=31379599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12729588U Pending JPH0251243U (en) | 1988-09-30 | 1988-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0251243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100338647B1 (en) * | 1997-10-23 | 2002-08-21 | 주식회사 포스코 | Double bite to drill the tap hole at bleast furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62107008A (en) * | 1985-10-31 | 1987-05-18 | Sumitomo Metal Ind Ltd | Tap hole opener for blast furnace |
-
1988
- 1988-09-30 JP JP12729588U patent/JPH0251243U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62107008A (en) * | 1985-10-31 | 1987-05-18 | Sumitomo Metal Ind Ltd | Tap hole opener for blast furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100338647B1 (en) * | 1997-10-23 | 2002-08-21 | 주식회사 포스코 | Double bite to drill the tap hole at bleast furnace |