CN211587981U - Blowing device for preventing dust from being pressed into strip steel - Google Patents
Blowing device for preventing dust from being pressed into strip steel Download PDFInfo
- Publication number
- CN211587981U CN211587981U CN201922310237.0U CN201922310237U CN211587981U CN 211587981 U CN211587981 U CN 211587981U CN 201922310237 U CN201922310237 U CN 201922310237U CN 211587981 U CN211587981 U CN 211587981U
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- CN
- China
- Prior art keywords
- compressed air
- nozzle
- dust
- blowing
- strip steel
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- 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.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 23
- 239000010959 steel Substances 0.000 title claims abstract description 23
- 239000000428 dust Substances 0.000 title claims abstract description 17
- 238000007664 blowing Methods 0.000 title claims description 17
- 238000005096 rolling process Methods 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 230000007547 defect Effects 0.000 abstract description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052804 chromium Inorganic materials 0.000 abstract description 4
- 239000011651 chromium Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract 1
- 238000012797 qualification Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides an avoid dust to impress device that sweeps of belted steel leads in finishing mill export and defends top installation compressed air collector, and the compressed air collector passes through metal collapsible tube and flow control valve and connects rolling mill transmission side compressed air house steward, and the slope is installed the sector on the compressed air collector and is swept the nozzle, and the sector that the nozzle blew off sweeps wind orientation this finishing mill frame export direction. The utility model discloses a settle the device that sweeps between the frame, make belted steel upper surface dust and foreign matter effectively sweep, avoided dust, foreign matter to impress the chromium hole defect that the belted steel surface caused between the frame, reduced the waste product loss, improved belted steel surface quality qualification rate.
Description
Technical Field
The utility model belongs to steel rolling machinery equipment field especially relates to a can avoid dust to impress belted steel sweep device.
Background
In the production process of hot-rolled strip steel, a large amount of dust is usually generated under the conditions of higher rolling speed of a final stand of a finishing mill group, higher rolling temperature and multi-stand continuous rolling state, and after the dust is mixed with water vapor, a large-particle oil sludge mixture is formed on the upper surface of the strip steel and is brought into a roll gap of a next stand rolling mill along with the rolling process, so that the dust is pressed into the upper surface of the strip steel, and quality defects such as foreign matter pressing, chromium pits and the like on the upper surface of the hot-rolled strip steel are caused. For cold rolled varieties, particularly when the rolling thickness h is less than 0.5mm, the defects are easy to generate hole defects and cause unnecessary waste cutting and scrapping; secondly, the serious hole defect can also cause the strip breakage of the rolling mill during cold rolling production, and the operation rate of the rolling mill is influenced.
Disclosure of Invention
The utility model provides a can avoid dust particle to bring into next frame, the belted steel that is impressed causes belted steel surface chromium pit defect to reduce the device that sweeps of waste product loss.
Therefore, the utility model discloses the technical solution who takes does:
a blowing device for preventing dust from being pressed into strip steel comprises a finishing mill outlet guide and a rolling mill transmission side compressed air main pipe, wherein a metal hose, a compressed air collecting pipe, a nozzle and a flow control valve are additionally arranged; a compressed air header is arranged above an outlet guide of the finishing mill and is connected with a compressed air main pipe at the transmission side of the rolling mill through a metal hose and a flow control valve, a sector blowing nozzle is obliquely arranged on the compressed air header, and sector blowing air blown out by the nozzle faces the outlet direction of a rack of the finishing mill.
The included angle between the nozzle and the compressed air header is 10-20 degrees.
The fan-shaped surface of the nozzle blowing air forms an included angle of 20-30 degrees with the vertical direction.
The utility model has the advantages that:
the blowing device is arranged between the racks, so that dust and foreign matters on the upper surface of the strip steel are effectively blown and swept, the clean production between the finishing mill racks is realized, the defect of a chromium pit caused by pressing the dust and the foreign matters into the surface of the strip steel between the racks is avoided, the loss of waste products is reduced, and the qualified rate of the surface quality of the strip steel is improved.
Drawings
FIG. 1 is a schematic view of a purge device.
In the figure: the device comprises a finishing mill outlet guide 1, a compressed air header 2, a nozzle 3, a metal hose 4 and a flow control valve 5.
Detailed Description
As shown in figure 1, the utility model discloses avoid dust to impress blowing device of belted steel, including finishing mill export guide 1, compressed air collector 2, nozzle 3, metal collapsible tube 4, flow control valve 5 and rolling mill transmission side compressed air house steward. A compressed air header 2 is arranged above an outlet guide 1 of a finishing mill, the compressed air header 2 is connected with a compressed air main pipe at the transmission side of the finishing mill through a metal hose 4 and a flow control valve 5, 9 sector-shaped blowing nozzles 3 are obliquely arranged on the compressed air header 2, the nozzles 3 are arranged at equal intervals, and the interval between every two nozzles 3 is 150 mm. The sector blowing air blown out by the nozzles 3 faces the outlet direction of the frame of the finishing mill, the included angle between the nozzles 3 and the compressed air collecting pipe 2 is 15 degrees, the sector of the sector blowing air of the nozzles 3 forms an included angle of 25 degrees with the vertical direction, the compressed air flow between the nozzles 3 is ensured to be not interfered with each other, the compressed air can be ensured to be uniformly blown to cover the whole upper surface of the width of the whole strip steel in a full covering manner, and the dust particles generated by rolling the upper frame are prevented from being brought into the next frame.
Claims (3)
1. A blowing device for preventing dust from being pressed into strip steel comprises a finishing mill outlet guide and a rolling mill transmission side compressed air main pipe, and is characterized in that a metal hose, a compressed air collecting pipe, a nozzle and a flow control valve are additionally arranged; a compressed air header is arranged above an outlet guide of the finishing mill and is connected with a compressed air main pipe at the transmission side of the rolling mill through a metal hose and a flow control valve, a sector blowing nozzle is obliquely arranged on the compressed air header, and sector blowing air blown out by the nozzle faces the outlet direction of a rack of the finishing mill.
2. A blowing apparatus for preventing dusts from being pressed into a strip steel as claimed in claim 1, wherein the angle between the nozzle and the compressed air header is 10 ° to 20 °.
3. A blowing device for avoiding dust from being pressed into strip steel as claimed in claim 1, wherein the fan-shaped surface of the blowing air of the nozzle fan-shaped surface forms an included angle of 20-30 degrees with the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922310237.0U CN211587981U (en) | 2019-12-20 | 2019-12-20 | Blowing device for preventing dust from being pressed into strip steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922310237.0U CN211587981U (en) | 2019-12-20 | 2019-12-20 | Blowing device for preventing dust from being pressed into strip steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211587981U true CN211587981U (en) | 2020-09-29 |
Family
ID=72594072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922310237.0U Active CN211587981U (en) | 2019-12-20 | 2019-12-20 | Blowing device for preventing dust from being pressed into strip steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211587981U (en) |
-
2019
- 2019-12-20 CN CN201922310237.0U patent/CN211587981U/en active Active
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