CN217043995U - Upper roller cooling system of flat rolling mill - Google Patents
Upper roller cooling system of flat rolling mill Download PDFInfo
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- CN217043995U CN217043995U CN202220058538.8U CN202220058538U CN217043995U CN 217043995 U CN217043995 U CN 217043995U CN 202220058538 U CN202220058538 U CN 202220058538U CN 217043995 U CN217043995 U CN 217043995U
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Abstract
The utility model relates to a last roll cooling system of planishing mill belongs to planishing mill technical field. The cooling water pipe is arranged above the upper roller, the central line of the cooling water pipe is intersected with the central line of the upper roller, the cooling water pipe is communicated with the water delivery pipe, one end of the cooling water pipe close to the inlet guide side is provided with a nozzle unit, the water outlets of the nozzle units respectively face the upper roller, and cooling water sprayed by the nozzle units cools a rolling groove of the upper roller; and the other end of the cooling water pipe close to the outlet guide side is provided with a back-spraying unit, and the back-spraying unit can flush cooling water attached to the upper roller groove. The back-spray unit washes away the cooling water that adheres to on the mangle in this application, prevents that the too much contact cooling water of red steel, has guaranteed that the red steel cooling is even, has reduced the uneven phenomenon of top roll and lower roll mangle wearing and tearing and has taken place, has improved rod size precision and roll life.
Description
Technical Field
The utility model relates to a last roll cooling system of planishing mill belongs to planishing mill technical field.
Background
At present, in the rolling production of bar and wire rods in steel plants, roller cooling is carried out in a convection heat exchange mode, and in the convection heat exchange mode, the temperature difference, the relative speed and the total amount of cooling media of two objects are main factors influencing roller cooling. Wherein, the temperature difference refers to the difference between the temperature of the cooling water and the temperature of the roller, the relative speed is the pressure of the cooling water as the main influence factor, and the total amount of the cooling medium refers to the flow of the cooling water. At present, for guaranteeing roll cooling effect, the most common way of steel mill is to increase cooling water flow, but what a large amount of roll cooling water brought is not only the increase of energy consumption, more serious is on a large amount of rivers arrive red steel, the red steel surface difference in temperature and inside and outside difference in temperature about the aggravation, the red steel temperature is uneven to lead to final product to organize inhomogeneous, leads to the mangle wearing and tearing speed inconsistent of top roll and bottom roll moreover, finally influences rod size and roll life.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a flat rolling mill top roll cooling system is provided to above-mentioned prior art, can wash the cooling water that adheres to on the mangle of top roll, avoid cooling water flow to red steel on, guarantee that the red steel cooling is even, reduce the uneven phenomenon of top roll mangle and bottom roll mangle wearing and tearing and take place.
The utility model provides a technical scheme that above-mentioned problem adopted does: a cooling system for an upper roller of a flat rolling mill comprises a cooling water pipe, wherein the cooling water pipe is arranged above the upper roller, the center line of the cooling water pipe is intersected with the center line of the upper roller, the cooling water pipe is communicated with a water pipe, one end of the cooling water pipe, close to the inlet guide side, is provided with a nozzle unit, the water outlets of the nozzle unit respectively face the upper roller, and cooling water sprayed by the nozzle unit cools a rolling groove of the upper roller; and the other end of the cooling water pipe close to the outlet guide side is provided with a back-spraying unit, and the back-spraying unit can flush cooling water attached to the upper roller groove.
The cooling water pipe is an arc-shaped structural part, and the arc line of the cooling water pipe is matched with the arc of the top surface of the upper roller.
The reverse-spraying unit comprises a reverse-spraying water pipe which is vertically arranged, one end of the reverse-spraying water pipe is connected with the cooling water pipe, the other end of the reverse-spraying water pipe is in threaded connection with a reverse-spraying nozzle, the water outlet of the reverse-spraying nozzle faces the side face of the upper roller respectively, and the inclination angle between the spraying line of the reverse-spraying nozzle and the horizontal plane is 20-30 degrees.
The reverse-spraying water pipe is a hook type structural part, and the reverse-spraying nozzle is a reverse-spraying rectangular nozzle.
The nozzle units respectively comprise a plurality of nozzles which are uniformly arranged at intervals along the circumferential direction of the bottom of the cooling water pipe; the nozzle comprises a circular nozzle and a rectangular nozzle, the rectangular nozzle is connected with a cooling water pipe through the circular nozzle, and the inclination angle between the reverse extension line of the jet line of the rectangular nozzle and the horizontal plane is 20-30 degrees.
Compared with the prior art, the utility model has the advantages of: the utility model provides a cooling water that planishing mill top roll cooling system, back-spray unit washed off attached to on the mangle prevents that red steel from too much contact cooling water, has guaranteed that red steel cools off evenly, has reduced the uneven phenomenon of upper roll and lower roll mangle wearing and tearing and has taken place, has improved rod size precision and roll life. The rectangular nozzle is connected with the round nozzle through threads, and the rectangular nozzles with different specifications can be replaced according to the specification of the rolling groove, so that the water flow jet pressure and the transverse scattering area are adjusted.
Drawings
FIG. 1 is a schematic view of a cooling system for an upper roll of a flat rolling mill according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is an enlarged view of B in FIG. 1
In the figure, a lower roller 1, a red steel 2, an inlet guide and guard 3, an upper roller 4, a cooling water pipe 5, a water conveying pipe 6, a reverse spraying unit 7, a reverse spraying water pipe 7.1, a reverse spraying rectangular nozzle 7.2, an outlet guide and guard 8, a circular nozzle 9 and a rectangular nozzle 10 are arranged.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, 2 and 3, the upper roll cooling system of the flat rolling mill in the present embodiment includes an upper roll 4 and a lower roll 1 which are arranged vertically symmetrically, and a rolling channel is formed by a gap between the upper roll 4 and the lower roll 1. An inlet guide 3 is arranged at the inlet end of the rolling channel, an outlet guide 8 is arranged at the outlet end of the rolling channel, the red steel is guided into the rolling channel through the inlet guide 3, and the rolled red steel is guided out through the outlet guide 8. An arc-shaped cooling water pipe 5 is arranged above the upper roller 4, the central line of the cooling water pipe 5 is intersected with the central line of the upper roller 4, and the arc line of the cooling water pipe 5 is parallel to the arc shape of the top surface of the upper roller 4. The cooling water pipe 5 is communicated with the water delivery pipe 6, and the nozzle unit is arranged on the cooling water pipe 5 and is close to the inlet guide 3 side. The water outlets of the nozzle units face the upper rollers 4 respectively, and the inclination angle between the reverse extension line of the spray line of the nozzle units and the horizontal plane is 25 degrees. The cooling water in the water delivery pipe 6 flows into the cooling water pipe 5, and the cooling water is obliquely sprayed onto the upper roller 4 through the nozzle unit to cool the groove of the upper roller 4. The end part of the cooling water pipe 5 close to the outlet guide 8 side is welded with a back-spray water pipe 7.1, and the cooling water pipe 5 is communicated with the back-spray water pipe 7.1. The water outlet end of the reverse spray water pipe 7.1 is provided with a reverse spray rectangular nozzle 7.2. The reverse-spraying water pipe 7.1 is a hook type structural member, so that a water outlet of the reverse-spraying rectangular nozzle 7.2 faces the side surface of the upper roller 4, and the inclination angle between the spraying line of the reverse-spraying rectangular nozzle 7.2 and the horizontal plane is 25 degrees.
The mounting height of the water outlet of the reverse spray rectangular nozzle 7.2 is 1/3-1/2 of the radius value of the upper roller, so that cooling water attached to the rolling groove of the upper roller 4 can be well washed away, excessive contact of the red steel with the cooling water is prevented, and the red steel is uniformly cooled; but also can cool the upper roller 4 in advance, reduce the abrasion loss of the rolling groove of the upper roller 4 and prolong the service life of the rolling groove of the upper roller 4.
The nozzle unit comprises a circular nozzle 9 and a rectangular nozzle 10, wherein the inlet end of the circular nozzle 9 is connected with the cooling water pipe 5, and the outlet end of the circular nozzle 9 is in threaded connection with the inlet end of the rectangular nozzle 10. The rectangular nozzle 10 can increase the water jet pressure and the transverse scattering area, and improves the cooling effect of the rolling groove. The rectangular nozzle 10 is in threaded connection with the circular nozzle 9, the water jet pressure and the transverse scattering area can be adjusted by replacing rectangular nozzles with different specifications, and the rolling groove device is suitable for different rolling groove specifications.
The back spray unit washes away the cooling water that adheres to on the mangle in this application, prevents that the red steel from too much contact cooling water, has guaranteed that the red steel cooling is even, has reduced the uneven phenomenon of top roll and lower roll mangle wearing and tearing and has taken place, has improved rod size precision and roll life. The rectangular nozzle is connected with the round nozzle through threads, and the rectangular nozzles with different specifications can be replaced according to the specification of the rolling groove, so that the water flow jet pressure and the transverse scattering area are adjusted.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (5)
1. The utility model provides a last roll cooling system of planishing mill which characterized in that: the cooling device comprises a cooling water pipe (5), wherein the cooling water pipe (5) is arranged above an upper roller (4), the central line of the cooling water pipe (5) is intersected with the central line of the upper roller (4), the cooling water pipe (5) is communicated with a water delivery pipe (6), one end of the cooling water pipe (5) close to the inlet guide and guard (3) side is provided with a nozzle unit, water outlets of the nozzle unit respectively face the upper roller (4), and cooling water sprayed by the nozzle unit cools a rolling groove of the upper roller (4); the other end of the cooling water pipe (5) close to the outlet guide and guard (8) side is provided with a back-spraying unit (7), and the back-spraying unit (7) can flush cooling water attached to a groove of the upper roller (4).
2. The system for cooling the upper roll of a flat rolling mill as set forth in claim 1, wherein: the cooling water pipe (5) is an arc-shaped structural part, and the arc line of the cooling water pipe (5) is matched with the arc of the top surface of the upper roller (4).
3. The system for cooling the upper roll of a flat rolling mill as set forth in claim 1, wherein: the reverse spraying unit (7) comprises a reverse spraying water pipe (7.1) which is vertically arranged, one end of the reverse spraying water pipe (7.1) is connected with the cooling water pipe (5), the other end of the reverse spraying water pipe (7.1) is in threaded connection with a reverse spraying nozzle, a water outlet of the reverse spraying nozzle faces the side surface of the upper roller (4) respectively, and the inclination angle between the spraying line of the reverse spraying nozzle and the horizontal plane is 20-30 degrees.
4. The system of claim 3, wherein: the reverse spray water pipe (7.1) is a hook type structural member, and the reverse spray nozzle is a reverse spray rectangular nozzle (7.2).
5. The system of claim 3, wherein: the nozzle units respectively comprise a plurality of nozzles which are uniformly arranged at intervals along the circumferential direction of the bottom of the cooling water pipe; the nozzle comprises a circular nozzle (9) and a rectangular nozzle (10), the rectangular nozzle (10) is connected with the cooling water pipe (5) through the circular nozzle (9), and the inclination angle between the reverse extension line of the spray line of the rectangular nozzle (10) and the horizontal plane is 20-30 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220058538.8U CN217043995U (en) | 2022-01-11 | 2022-01-11 | Upper roller cooling system of flat rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220058538.8U CN217043995U (en) | 2022-01-11 | 2022-01-11 | Upper roller cooling system of flat rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217043995U true CN217043995U (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220058538.8U Active CN217043995U (en) | 2022-01-11 | 2022-01-11 | Upper roller cooling system of flat rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217043995U (en) |
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2022
- 2022-01-11 CN CN202220058538.8U patent/CN217043995U/en active Active
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