CN210632661U - Hot rolling roughing mill inlet and outlet air-jet device - Google Patents
Hot rolling roughing mill inlet and outlet air-jet device Download PDFInfo
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- CN210632661U CN210632661U CN201921248051.0U CN201921248051U CN210632661U CN 210632661 U CN210632661 U CN 210632661U CN 201921248051 U CN201921248051 U CN 201921248051U CN 210632661 U CN210632661 U CN 210632661U
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Abstract
The utility model provides an air injection device for the inlet and outlet of a hot rolling roughing mill, which comprises a compressed air pipe, a flexible connecting pipe, an air injection pipe, a nozzle and a stop valve; the two ends of the flexible connecting pipe are respectively connected with a compressed air pipe through stop valves, the front end and the rear end of the compressed air pipe are respectively connected with an air source pipeline and an air injection pipe, a nozzle is obliquely connected below the air injection pipe, and an inclination angle is formed between the axis of the nozzle and the rolling line. The nozzle adopts a hidden type design installation and follow-up type connection structure, is arranged in the nozzle installation holes of the inlet guide ruler and the upper guide and guards and synchronously moves along with the inlet guide ruler and the upper guide and guards. The utility model can sweep the residual cooling water on the surface of the slab completely, thereby improving the accuracy of the instrument detection; the temperature of the intermediate blank can be reduced by 20 ℃, the nozzle is prevented from being damaged by collision when the head and the tail of the steel plate are tilted, and the running stability of the equipment is improved.
Description
Technical Field
The utility model belongs to steel rolling machinery equipment field especially relates to a hot rolling roughing mill goes into export gas injection device for cooling water sweeps.
Background
In the production process of the hot-rolled strip steel, the roller is directly contacted with the high-temperature steel plate, so that the temperature of the roller is rapidly increased, and the surface of the roller is easy to fall off. It is therefore necessary to spray cooling water onto the roll surface to prevent the roll temperature from rising too quickly. The pressure of the cooling water of the roller is 0.7-1.0 MPa generally, and the cooling water of the upper roller flows to the surface of the steel plate along the gap of the rolling mill after being sprayed on the roller, so that the temperature of the steel plate is reduced and the surface of the steel plate generates scale defects. At present, steel mills generally adopt a device for spraying and sweeping air and water on a guide and guard at the outlet side of a rolling mill to sweep residual accumulated water on the surface of a steel plate from the side direction at a certain inclination angle. Because the hot-rolled strip steel is wide, the side spraying device can not completely sweep and clean accumulated water remained on the surface of the steel plate, the temperature difference of the cross section of the strip steel is large, the detection of the width central line of the strip steel by a rough rolling outlet detection instrument is inaccurate, the rolling of the next procedure is difficult, and the deviation steel clamping accident of the strip steel in a finishing mill is easy to occur.
Disclosure of Invention
The utility model provides a can be with middle base surface residual cooling water sweep totally, the hot rolling roughing mill who reduces middle base temperature drop and oxide scale defect goes into export gas injection device.
Therefore, the utility model discloses the technical solution who takes does:
an air injection device for an inlet and an outlet of a hot rolling roughing mill comprises an upper guide and guard of an outlet of the roughing mill and an inlet guide ruler of the roughing mill, wherein the air injection device comprises a compressed air pipe, a flexible connecting pipe, an air injection air pipe, a nozzle and a stop valve, wherein two ends of the flexible connecting pipe are respectively connected with the compressed air pipe through the stop valve, the front-section compressed air pipe is connected to a compressed air source pipeline, the rear-section compressed air pipe is connected with the air injection pipe, a row of nozzles are obliquely connected to the lower surface of the air injection pipe, the nozzle nozzles face the rollers of the roughing mill, and an inclination;
the nozzle adopts a hidden type installation and follow-up type connection structure, and the roughing mill inlet air injection device is installed on an inlet guide ruler between the vertical roll and an inlet detection instrument; the roughing mill outlet air injection device is arranged on an upper guide between the roughing mill outlet and an outlet guide ruler; the inlet guide ruler and the upper guide are respectively provided with a nozzle mounting hole at the mounting position, and the nozzle is arranged in the nozzle mounting holes of the inlet guide ruler and the upper guide and synchronously moves along with the inlet guide ruler and the upper guide.
The included angle between the air injection pipe and the nozzle is 8-20 degrees.
The angle β between the nozzle axis and the pass line is 10-20 deg.
The scattering angle of the nozzle is 30-60 degrees.
The utility model has the advantages that:
1. can sweep the cooling water that remains on the slab surface clean, remaining cooling water has obtained effective control, and instrument detection accuracy improves greatly.
2. The temperature of the cooling water to the intermediate blank is reduced by 20 ℃, and the defects of the iron scale are obviously reduced.
3. The nozzle adopts hidden design installation, and the nozzle does not lean out the guiding ruler and leads and defend, striking damage nozzle when can preventing the perk of steel sheet head and the tail, improve equipment operating stability.
4. Adopt trailing type connection structure, the nozzle is along with the synchronous motion of guide chi and guide, when the middle base of rolling different thickness specifications, can keep the nozzle to keep invariable to the distance on steel sheet surface, guarantees that the gas injection sweeps the effect.
Drawings
FIG. 1 is a schematic view of an outlet air-jet apparatus of a hot-rolling roughing mill;
FIG. 2 is a view showing the installation state of the outlet air-jet apparatus of the hot-rolling roughing mill.
In the figure: compressed air pipe 1, flexible coupling pipe 2, stop valve 3, export upper guide 4, air blast pipe 5, nozzle 6, rolling mill export roll table 7, nozzle mounting hole 8.
Detailed Description
The utility model discloses hot rolling roughing mill goes into export air spout device, including the roughing mill export on lead defend 4 and the roughing mill entry guide ruler, the air spout device contains compressed air pipe 1, hose coupling 2, stop valve 3, air blasting pipe 5 and nozzle 6, hose coupling 2's both ends are passed through stop valve 3 and are connected compressed air pipe 1 respectively, anterior segment compressed air pipe 1 is connected on compressed air source pipeline, air blasting pipe 5 is connected to back end compressed air pipe 1, the below slant of air blasting pipe 5 is connected with one row of nozzle 6, nozzle 6's spout is towards the roughing mill roll, have inclination β between 6 axes of nozzle and the rolling line.
The utility model adopts a hidden type design installation and follow-up type connection structure for the nozzle 6, and the roughing mill inlet air injection device is installed on the inlet guide ruler between the vertical roll and the inlet detection instrument; the roughing mill outlet air jet device is arranged on an outlet upper guide 4 between the roughing mill outlet and an outlet guide ruler. FIG. 2 is a view showing the installation state of the outlet air-jet apparatus of the hot-rolling roughing mill. As can be seen from fig. 2, the outlet upper guide 4 is provided with a nozzle mounting hole 8 at a mounting position, and the nozzle 6 is arranged in the nozzle mounting hole 8 of the outlet upper guide 4 and moves synchronously with the outlet upper guide 4. The outlet air-jet device is arranged above the outlet roller table 7 of the rolling mill.
The included angle between the air injection pipe 5 and the nozzle 6 is 15 degrees, the inclination angle β between the axis of the nozzle 6 and the rolling line is 15 degrees, the scattering angle of the nozzle is 45 degrees, the distance between the nozzle 6 and the plate blank ranges from 200 mm to 300mm, the diameter of the nozzle 6 ranges from 3 mm to 5mm, and the distance between the nozzles 6 is 120 mm.
Claims (4)
1. An air injection device for an inlet and an outlet of a hot rolling roughing mill comprises an upper guide and guard of an outlet of the roughing mill and an inlet guide ruler of the roughing mill, and is characterized in that the air injection device comprises a compressed air pipe, a flexible connecting pipe, an air injection air pipe, a nozzle and a stop valve, wherein two ends of the flexible connecting pipe are respectively connected with the compressed air pipe through the stop valve, the front-section compressed air pipe is connected to a compressed air source pipeline, the rear-section compressed air pipe is connected with the air injection air pipe, a row of nozzles are obliquely connected to the lower surface of the air injection air pipe, the nozzle nozzles face a roller of the roughing mill, and an;
the nozzle adopts a hidden type installation and follow-up type connection structure, and the roughing mill inlet air injection device is installed on an inlet guide ruler between the vertical roll and an inlet detection instrument; the roughing mill outlet air injection device is arranged on an upper guide between the roughing mill outlet and an outlet guide ruler; the inlet guide ruler and the upper guide are respectively provided with a nozzle mounting hole at the mounting position, and the nozzle is arranged in the nozzle mounting holes of the inlet guide ruler and the upper guide and synchronously moves along with the inlet guide ruler and the upper guide.
2. The hot roughing mill inlet and outlet air injection apparatus of claim 1 wherein the included angle between the air injection duct and the nozzle is 8 ° to 20 °.
3. The hot roughing mill inlet and outlet gas injection apparatus of claim 1 wherein the angle of inclination β between the nozzle axis and the pass line is between 10 ° and 20 °.
4. The hot roughing mill inlet and outlet air blast apparatus of claim 1 wherein the spray angle of said nozzles is between 30 ° and 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921248051.0U CN210632661U (en) | 2019-08-05 | 2019-08-05 | Hot rolling roughing mill inlet and outlet air-jet device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921248051.0U CN210632661U (en) | 2019-08-05 | 2019-08-05 | Hot rolling roughing mill inlet and outlet air-jet device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210632661U true CN210632661U (en) | 2020-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921248051.0U Active CN210632661U (en) | 2019-08-05 | 2019-08-05 | Hot rolling roughing mill inlet and outlet air-jet device |
Country Status (1)
| Country | Link |
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| CN (1) | CN210632661U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114769317A (en) * | 2022-04-20 | 2022-07-22 | 广东韶钢松山股份有限公司 | Rod and wire shearing production line |
-
2019
- 2019-08-05 CN CN201921248051.0U patent/CN210632661U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114769317A (en) * | 2022-04-20 | 2022-07-22 | 广东韶钢松山股份有限公司 | Rod and wire shearing production line |
| CN114769317B (en) * | 2022-04-20 | 2023-10-31 | 广东韶钢松山股份有限公司 | Bar and wire shearing production line |
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