CN202717784U - Pulverized coal spray gun for coal injection of blast furnace - Google Patents
Pulverized coal spray gun for coal injection of blast furnace Download PDFInfo
- Publication number
- CN202717784U CN202717784U CN 201220198041 CN201220198041U CN202717784U CN 202717784 U CN202717784 U CN 202717784U CN 201220198041 CN201220198041 CN 201220198041 CN 201220198041 U CN201220198041 U CN 201220198041U CN 202717784 U CN202717784 U CN 202717784U
- Authority
- CN
- China
- Prior art keywords
- pulverized coal
- injection
- spray gun
- blast furnace
- injection tube
- 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 - Fee Related
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Abstract
The utility model relates to a pulverized coal spray gun for coal injection of a blast furnace. The pulverized coal spray gun comprises a conveying passage, and a fixing clip, a fixing clip nut and a plug valve for joining different parts of the conveying passage. An angle between an injection-blowing pipe and a pipe head is adjusted and increased from 175DEG to 177.5DEG, thus when a plugging angle of the spray gun into a wind gap can be maintained at 12.5DEG, the pulverized coal is uniformly injected into the blast furnace along the horizontal direction, the burning effect of the pulverized coal in the blast furnace can be guaranteed, and the coke ratio can be reduced. By adjusting a material of the injection-blowing pipe, the material is adjusted to 15CrMo (chrome molybdenum), so that the service life of the spray gun can be prolonged.
Description
Technical field
The utility model relates to a kind of pulverized coal injection pulverized coal gun.
Background technology
The pulverized coal injection spray gun is the important non-standard equipment of pulverized coal injection in blast furnace, links to each other with winding-up arm, metallic hose before the spray gun, and spray gun directly inserts in the blast-furnace tuyere, and guaranteeing dusts evenly successfully jets to blast furnace by spray gun, reduces the coke ratio that blast furnace is produced.Now widely used pulverized coal gun angle between injection tube and tube head is too small, cause the angle of spray gun insertion blast-furnace tuyere excessive, can not guarantee that the coal dust along continuous straight runs evenly sprays into blast furnace, simultaneously material employing is improper, cause injection tube and tube head life-span short, had a strong impact on the work-ing life of spray gun.
The utility model content
Technical problem to be solved in the utility model provides a kind ofly sprays that resistance is low, the pulverized coal injection pulverized coal gun of long service life.
The utility model adopts following technical scheme:
The utility model comprises conveying passage and the fixation clamp, fixation clamp nut and the stopcock that are used for connecting each parts of conveying passage; Described conveying passage is by the tube head that connects successively, injection tube, nipple and with externally threaded free flow coupling, described fixation clamp, fixation clamp nut are arranged between injection tube and nipple and with injection tube, nipple and are connected, described stopcock is arranged between nipple and free flow coupling and with nipple and free flow coupling and is connected, described tube head is fixedly connected with injection tube, and the outer wall of described tube head and injection tube is 177.5 ° of settings.
Described pulverized coal injection pulverized coal gun, the material that it is characterized in that described injection tube is 15CrMo.
Positively effect of the present utility model is as follows:
The utility model is adjusted angle between injection tube and the tube head, angle is increased to 177.5 ° by 175 °, when the angle of like this spray gun being inserted the air port remains on 12.5 °, guarantee that the coal dust along continuous straight runs evenly sprays into blast furnace, guarantee the combustion efficacy of coal dust in blast furnace, reduce coke ratio.
The utility model is adjusted the injection tube material, and material is adjusted into 15CrMo, prolongs the work-ing life of spray gun.
Description of drawings
Accompanying drawing 1 is the utility model structural representation.
Embodiment
As shown in Figure 1, the utility model comprises conveying passage and the fixation clamp 5, fixation clamp nut 6 and the stopcock 7 that are used for connecting each parts of conveying passage; Described conveying passage is by the tube head 1 that connects successively, injection tube 2, nipple 3 and with externally threaded free flow coupling 4, described fixation clamp 5, fixation clamp nut 6 are arranged at injection tube 2 and 3 of nipples and injection tube 2, nipple 3 are connected, described stopcock 7 is arranged at nipple 3 and 4 of free flow couplings and nipple 3 and free flow coupling 4 is connected, described tube head 1 is fixedly connected with injection tube 2, described tube head 1 is 177.5 ° of settings with the outer wall of injection tube 2, and the material of described injection tube 2 is 15CrMo.
The utility model adopt the position adjustable, with the angle-inserting type structure of check hot air apparatus, the pulverized coal gun leading portion should adopt resistance to high temperature oxidation and anti-coal dust wearing and tearing material.Usage quantity of the present utility model is identical with blast-furnace tuyere quantity, and spray gun is consumable accessory, and its structure should have good distributing homogeneity and wear resistance, guarantees simultaneously the stopping property of whole equipment.
The utility model is adjusted angle between injection tube 2 and the tube head 1, angle is increased to 177.5 ° by 175 °, when the angle of like this spray gun being inserted the air port remains on 12.5 °, guarantee that the coal dust along continuous straight runs evenly sprays into blast furnace, guarantee the combustion efficacy of coal dust in blast furnace, reduce coke ratio.
The utility model is adjusted injection tube 2 materials, and material is adjusted into 15CrMo, prolongs the work-ing life of spray gun.
Claims (2)
1. a pulverized coal injection pulverized coal gun is characterized in that it comprises conveying passage and the fixation clamp (5), fixation clamp nut (6) and the stopcock (7) that are used for connecting each parts of conveying passage; Described conveying passage is by the tube head (1) that connects successively, injection tube (2), nipple (3) and with externally threaded free flow coupling (4), described fixation clamp (5), fixation clamp nut (6) is arranged between injection tube (2) and nipple (3) and with injection tube (2), nipple (3) is connected, described stopcock (7) is arranged between nipple (3) and free flow coupling (4) and with nipple (3) and free flow coupling (4) and is connected, described tube head (1) is fixedly connected with injection tube (2), and described tube head (1) is 177.5 ° of settings with the outer wall of injection tube (2).
2. pulverized coal injection pulverized coal gun according to claim 1, the material that it is characterized in that described injection tube (2) is 15CrMo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220198041 CN202717784U (en) | 2012-05-06 | 2012-05-06 | Pulverized coal spray gun for coal injection of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220198041 CN202717784U (en) | 2012-05-06 | 2012-05-06 | Pulverized coal spray gun for coal injection of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202717784U true CN202717784U (en) | 2013-02-06 |
Family
ID=47619612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220198041 Expired - Fee Related CN202717784U (en) | 2012-05-06 | 2012-05-06 | Pulverized coal spray gun for coal injection of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202717784U (en) |
-
2012
- 2012-05-06 CN CN 201220198041 patent/CN202717784U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20180506 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |