CN201793596U - Novel small opening drill for blast furnace - Google Patents
Novel small opening drill for blast furnace Download PDFInfo
- Publication number
- CN201793596U CN201793596U CN2010202367099U CN201020236709U CN201793596U CN 201793596 U CN201793596 U CN 201793596U CN 2010202367099 U CN2010202367099 U CN 2010202367099U CN 201020236709 U CN201020236709 U CN 201020236709U CN 201793596 U CN201793596 U CN 201793596U
- Authority
- CN
- China
- Prior art keywords
- drill
- small opening
- blade
- novel small
- blast furnace
- 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 - Lifetime
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Abstract
The utility model relates to a novel small opening drill for a blast furnace, which comprises a drill body and a blade. The novel small opening drill is characterized in that the tail portion of the drill body is in a swallow tail shape. The novel small opening drill for a blast furnace has the advantages that 1 the blade is changed from a two-side compressing and crushing type into a single-side clockwise cutting type, thereby greatly reducing resistance to the blade and improving hole drilling effect, 2 the tail portion of the drill body is changed into a swallow tail shape to increase solidity of the drill through interference fit of the swallow tail shape. Therefore, the tightness of a tool bit is greatly improved.
Description
Technical field
The utility model relates to the little drill bit of a kind of novel blast-furnace opening.
Background technology
When the metallurgy industry iron-smelting blast furnace went out molten iron at present, traditional method was a little drill bit of loading onto required specification on the drilling rod of taphole drilling machine having, aimed at stemming and drilled the hole, allowed molten iron flow out.Its blade front end is sharp type, and afterbody is the rectangle of 90 degree, and this structure is after using once, and drill bit promptly comes off, and has a strong impact on working efficiency.
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of novel blast-furnace opening little drill bit, it combines the back with drilling rod firm in structure, difficult drop-off.
The utility model solves the problems of the technologies described above the technical scheme that is adopted:
The little drill bit of novel blast-furnace opening, it includes drill body and blade, and the afterbody that it is characterized in that described drill body is a dove-tail form.
In the such scheme, the front end of described blade is the single face cutting type.
Of the present utility model being also advantageous in that:
1, changes blade into single face up time cutting type by the two sides attrition crushing, significantly reduced the resistance of blade, improved the boring effect;
2, the afterbody square with drill body changes dove-tail form into, has increased the firm intensity of drill bit by the shrink-fit of dove-tail form.Improved the tightness of cutter head greatly.
Description of drawings
Fig. 1 is contained in structural representation on the drilling rod for the utility model.
Embodiment
Below in conjunction with embodiment the utility model is further described: as Fig. 1, the little drill bit of novel blast-furnace opening, it includes drill body 2 and the blade 1 that links together, and the afterbody of described drill body is a dove-tail form, and the front end of described blade is the single face cutting type.
The utility model concrete application in actual use sees the following form 1
Table 1
The above, it only is preferred embodiment of the present utility model, be not that utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of the present utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1. the little drill bit of novel blast-furnace opening, it includes drill body (2) and blade (1), and the afterbody that it is characterized in that described drill body is a dove-tail form.
2. by the little drill bit of the described novel blast-furnace opening of claim 1, the front end that it is characterized in that described blade is the single face cutting type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202367099U CN201793596U (en) | 2010-06-24 | 2010-06-24 | Novel small opening drill for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202367099U CN201793596U (en) | 2010-06-24 | 2010-06-24 | Novel small opening drill for blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201793596U true CN201793596U (en) | 2011-04-13 |
Family
ID=43848515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202367099U Expired - Lifetime CN201793596U (en) | 2010-06-24 | 2010-06-24 | Novel small opening drill for blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201793596U (en) |
-
2010
- 2010-06-24 CN CN2010202367099U patent/CN201793596U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110413 |
|
| CX01 | Expiry of patent term |