Hot-rolled strip steel forced expansion roller

Abstract

The invention provides a hot-rolled strip steel forced expansion roller, and belongs to the field of rollers, the hot-rolled strip steel forced expansion roller comprises a roller body, a forced expansion groove, a positioning groove A, a positioning groove B, a ventilation mechanism, a cold air exhaust mechanism and an air inlet mechanism, in the scheme, cold air in a ventilation pipe A and a ventilation pipe B can be exhausted through arrangement of a butt joint pipe, and the butt joint pipe is aligned with heat dissipation holes; the cold air can enter the heat dissipation holes, so that the position, with the large diameter, of the roller body is cooled, meanwhile, gas exhausted from the heat dissipation holes can purge hot-rolled strip steel, scrap iron on the surface of the hot-rolled strip steel is removed, and the cold air making contact with the hot-rolled strip steel is blocked and then reversely flows to purge the surface of the roller body. And the mounting cover is convenient to mount and dismount, so that the ventilation pipe A and the ventilation pipe B are convenient to mount and dismount, and the problems that in the prior art, a ventilation duct is long, the distance between two fans is large, the heat removal effect temperature difference is large, and the heat dissipation effect of the position, away from the fans, of the ventilation duct is not obvious can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of rolling rollers, and in particular relates to a strong-expanding rolling roller for hot-rolled strip steel. Background Art

[0002] Rollers are the main working parts and tools on the rolling mill that cause continuous plastic deformation of metal. Rollers are mainly composed of three parts: roll body, roll neck and shaft head. The roll body is the middle part of the roll that actually participates in rolling metal. It has a smooth cylindrical or grooved surface. The roll neck is installed in the bearing and transmits the rolling force to the frame through the bearing seat and the pressing device. The drive end shaft head is connected to the gear seat through the connecting shaft to transmit the rotational torque of the motor to the roll. The rolls can be arranged in the form of two rolls, three rolls, four rolls or multiple rolls in the rolling mill frame.

[0003] The authorization publication number "CN218252155U" records "an internally cooled roller, comprising a roller, wherein a plurality of water-cooling pipes are provided inside the roller, and plugging screws are threadedly installed on the left and right sides of the plurality of water-cooling pipes, and an air-cooling mechanism is provided inside the roller, and the air-cooling mechanism includes a ventilation duct provided inside the roller, and two threaded grooves are provided on the surface of the ventilation duct. The internally cooled roller achieves the effect of water-cooling the roller by filling the water-cooling pipe provided inside the roller with coolant, achieves the effect of adding coolant and blocking the coolant by the plugging screws installed on the roller, and powers the brushless motor with power through the battery installed inside the threaded fixing barrel to drive the fan blades to rotate in the opposite direction, thereby achieving the effect of extracting and emptying the hot air inside the ventilation duct, and achieves the effect of facilitating its disassembly to charge the battery and maintain the brushless motor by the threaded fixing barrel installed inside the roller".

[0004] The above patent is convenient for disassembly to charge the battery and maintain the brushless motor, but the above patent has a long ventilation duct, a large distance between the two fans, a large temperature difference in the heat dissipation effect, and the heat dissipation effect is not obvious at the position where the ventilation duct is far away from the fan. Summary of the invention

[0005] The purpose of the present invention is to provide a hot-rolled strip strong stretching roller, aiming to solve the problems in the prior art that the ventilation duct is long, the distance between two fans is large, the temperature difference of the heat exhaust effect is large, and the heat dissipation effect is not obvious at the position of the ventilation duct far away from the fan.

[0006] To achieve the above object, the present invention provides the following technical solutions: A hot-rolled steel strip strong spreading roller, comprising: Roller body; Two strong expansion grooves are provided, and both of the two strong expansion grooves are provided on the roller body; Positioning groove A, provided on the roller body; Positioning groove B, provided on the roller body; A ventilation mechanism is provided on the roller body; The cold air discharge mechanism is arranged on the ventilation mechanism; The air intake mechanism is arranged on one side of the roller body, the air intake mechanism is connected to the ventilation mechanism, and the air intake mechanism needs to be connected to the refrigeration equipment.

[0007] As a preferred solution of the present invention, the ventilation mechanism comprises: A mounting component, arranged on the roller body; A ventilation component, provided on the mounting component; An exhaust component, arranged on the ventilation component and the roller body; The guide component is arranged on the roller body and the ventilation component.

[0008] As a preferred solution of the present invention, the mounting component includes a roller hole, a mounting cover and a mounting groove, the roller hole is opened on the roller body, two mounting grooves are provided, and the two mounting grooves are respectively opened at both ends of the roller body, and two mounting covers are provided, each of which is detachably connected to each mounting groove by bolts.

[0009] As a preferred solution of the present invention, the ventilation component includes a ventilation pipe A, a ventilation pipe B and a connecting sleeve, the ventilation pipe A is fixedly connected to one end of the mounting cover, and the ventilation pipe A passes through the mounting cover and is movably inserted in the mounting cover, the ventilation pipe B is fixedly connected to one end of the mounting cover, and one end of the ventilation pipe B passes through the mounting cover and extends to the inner side of the roller body, the connecting sleeve is fixedly connected to the circumferential surface of the ventilation pipe A, and the connecting sleeve is movably mounted on the ventilation pipe B.

[0010] As a preferred solution of the present invention, the exhaust component includes a heat dissipation hole and a butt joint pipe, and a plurality of the heat dissipation holes are provided, and the plurality of the heat dissipation holes are opened on the roller body, and the plurality of the heat dissipation holes are evenly distributed in the two strong expansion grooves, and a plurality of the butt joint pipes are provided, and the plurality of the butt joint pipes are respectively fixedly connected to the circumferential surfaces of the vent pipe A and the vent pipe B, and the plurality of butt joint pipes are evenly distributed, and each of the butt joint pipes is aligned with each heat dissipation hole.

[0011] As a preferred solution of the present invention, the guiding component includes a cross positioning frame and a positioning frame slide groove, the positioning frame slide groove is opened on the circumferential inner wall of the roller hole, and two cross positioning frames are provided, one of which is fixedly connected to the circumferential surface of the ventilation pipe A, and the other cross positioning frame is fixedly connected to the circumferential surface of the ventilation pipe B, and the two cross positioning frames are both slidably connected in the positioning frame slide groove.

[0012] As a preferred solution of the present invention, the cold air discharge mechanism includes a threaded tube, a vortex coil and an air outlet, wherein two threaded tubes are provided, one of which is fixedly connected to the circumferential surface of the vent pipe A, and the other threaded tube is fixedly connected to the circumferential surface of the vent pipe B, the vortex coil is fixedly connected to the circumferential surface of the vent pipe B, and a plurality of air outlets are provided, and the plurality of air outlets are all opened on the vortex coil.

[0013] As a preferred solution of the present invention, the air intake mechanism includes: An air intake component, provided on the vent pipe B; The control component is arranged on the air intake component.

[0014] As a preferred solution of the present invention, the air intake component includes a plug-in tube and an air intake pipe, the plug-in tube is movably plugged into one end of the vent pipe B, and the air intake pipe is fixedly connected to the circumferential surface of the plug-in tube.

[0015] As a preferred solution of the present invention, the control component includes an air blocking ring, a connecting frame and an electric telescopic rod. The air blocking ring is movably inserted into the ventilation pipe B, the connecting frame is fixedly connected to the circumferential inner wall of the air blocking ring, the electric telescopic rod is fixedly connected to one end of the plug-in tube, and the extended end of the electric telescopic rod movably passes through the plug-in tube and is fixedly connected to the connecting frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In this scheme, the cold air inside the vent pipe A and the vent pipe B can be discharged through the setting of the butt joint, and the cold air can enter the heat dissipation hole by aligning the butt joint with the heat dissipation hole, so as to cool the part with thicker diameter of the roller body. At the same time, the gas discharged from the heat dissipation hole can purge the hot-rolled strip, so as to remove the scrap iron on the surface of the hot-rolled strip. After contacting the hot-rolled strip, the cold air is blocked and then flows in the reverse direction to purge the surface of the roller body.

[0017] 2. In this scheme, the roller hole is set to install the vent pipe A and the vent pipe B, and the installation groove is set to connect the installation cover. Since the installation cover is detachably connected to the installation groove by bolts, the installation cover is easy to install and disassemble. The installation cover is easy to install and disassemble, making it easy to install and disassemble the vent pipe A and the vent pipe B.

[0018] 3. In this solution, a connecting sleeve is provided to connect the vent pipe A and the vent pipe B, so that the cold air inside the vent pipe B can enter the vent pipe A. The connecting sleeve is movably mounted on the vent pipe B, so that the vent pipe A and the vent pipe B are easy to disassemble and separate.

[0019] 4. In this scheme, the cold air in the vent pipe A and the vent pipe B can be discharged through the setting of two threaded pipes, so as to cool the inside of the roller hole. Due to the special shape of the two threaded pipes, the cold air can be blown to the inner wall of the roller hole comprehensively, so as to achieve the overall cooling of the roller body. The cold air inside the vent pipe B can be discharged through the setting of the vortex coil. At the same time, the cold air discharged by the vortex coil pushes the cold air inside the roller body to move in the same direction, so as to ensure that the cold air is in full contact with the inner wall of the roller hole.

[0020] 5. In this solution, the positioning frame slide groove is provided to slideably connect the cross positioning frame. The cross positioning frame is slidably connected to the positioning frame slide groove, which can improve the stability of the vent pipe A and the vent pipe B, and at the same time make it easier to connect the vent pipe A and the vent pipe B, thereby improving the installation and disassembly rate between the vent pipe A and the vent pipe B.

[0021] 6. In this solution, the connecting frame can be driven to move by extending the electric telescopic rod, and the movement of the connecting frame can drive the air blocking ring to move. The movement of the air blocking ring can block the air inlet of the vortex coil, preventing the cold air inside the ventilation pipe B from entering the vortex coil, and preventing the cold air from entering the vortex coil when the cold air is insufficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 The enlarged view of point A in the middle; Figure 4 For the present invention Figure 2 The enlarged view of point B in the middle; Figure 5 For the present invention Figure 2 Enlarged view of point C in the middle; Figure 6 It is a structural schematic diagram of the roller body of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point D in the middle.

[0023] In the figure: 1. Roller body; 2. Strong expansion groove; 3. Heat dissipation hole; 4. Positioning groove A; 5. Positioning groove B; 6. Roller hole; 8. Threaded pipe; 9. Ventilation pipe A; 10. Ventilation pipe B; 11. Vortex coil; 12. Air outlet; 13. Air blocking ring; 14. Connecting frame; 15. Plug-in pipe; 16. Electric telescopic rod; 17. Inlet pipe; 18. Installation cover; 19. Cross positioning frame; 20. Connecting sleeve; 21. Butt pipe; 22. Installation groove; 23. Positioning frame slide groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1 See also Figure 1-Figure 7 , the technical solution provided by this embodiment is as follows: A hot-rolled strip strong spreading roller, which consists of a roller body 1, a strong spreading groove 2, a positioning groove A4, a positioning groove B5, a ventilation mechanism, a cold air exhaust mechanism and an air intake mechanism. The strong spreading groove 2 is provided with two, and the two strong spreading grooves 2 are both arranged on the roller body 1. The positioning groove A4 is arranged on the roller body 1, and the positioning groove B5 is arranged on the roller body 1.

[0026] In a specific embodiment of the present invention, the two strengthening grooves 2 are both opened on the surface of the roller body 1 , the positioning groove A4 is opened on the surface of the roller body 1 , and the positioning groove B5 is opened on the surface of the roller body 1 .

[0027] Specifically, the mounting component is arranged on the roller body 1, and the mounting component includes a roller hole 6, a mounting cover 18 and a mounting groove 22. The roller hole 6 is opened on the roller body 1, and two mounting grooves 22 are provided. The two mounting grooves 22 are respectively opened at both ends of the roller body 1. Two mounting covers 18 are provided, and each mounting cover 18 is detachably connected to each mounting groove 22 by bolts.

[0028] In a specific embodiment of the present invention, the roller hole 6 is provided for installing the vent pipe A9 and the vent pipe B10, and the installation groove 22 is provided for connecting the installation cover 18. Since the installation cover 18 is detachably connected to the installation groove 22 by bolts, the installation cover 18 is easy to install and disassemble. The installation cover 18 is easy to install and disassemble, and the vent pipe A9 and the vent pipe B10 are easy to install and disassemble.

[0029] Specifically, the ventilation component is arranged on the mounting component, and the ventilation component includes a ventilation pipe A9, a ventilation pipe B10 and a connecting sleeve 20. The ventilation pipe A9 is fixedly connected to one end of the mounting cover 18, and the ventilation pipe A9 passes through the mounting cover 18 and is movably inserted in the mounting cover 18. The ventilation pipe B10 is fixedly connected to one end of the mounting cover 18, and one end of the ventilation pipe B10 passes through the mounting cover 18 and extends to the inner side of the roller body 1. The connecting sleeve 20 is fixedly connected to the circumferential surface of the ventilation pipe A9, and the connecting sleeve 20 is movably sleeved on the ventilation pipe B10.

[0030] In a specific embodiment of the present invention, a connecting sleeve 20 is provided to connect the ventilation pipe A9 and the ventilation pipe B10, so that the cold air inside the ventilation pipe B10 can enter the ventilation pipe A9. The connecting sleeve 20 is movably mounted on the ventilation pipe B10, so that the ventilation pipe A9 and the ventilation pipe B10 are easy to disassemble and separate.

[0031] Specifically, the exhaust component is arranged on the ventilation component and the roller body 1, and the exhaust component includes a heat dissipation hole 3 and a docking tube 21. A plurality of heat dissipation holes 3 are provided, and the plurality of heat dissipation holes 3 are opened on the roller body 1, and the plurality of heat dissipation holes 3 are evenly distributed in the two strong expansion grooves 2. A plurality of docking tubes 21 are provided, and the plurality of docking tubes 21 are respectively fixedly connected to the circumferential surfaces of the ventilation pipe A9 and the ventilation pipe B10, and the plurality of docking tubes 21 are evenly distributed, and each docking tube 21 is aligned with each heat dissipation hole 3.

[0032] In a specific embodiment of the present invention, the cold air in the vent pipe A9 and the vent pipe B10 can be discharged through the arrangement of the two threaded tubes 8, thereby cooling the inside of the roller hole 6. Due to the special shape of the two threaded tubes 8, the cold air can be blown to the inner wall of the roller hole 6 comprehensively, thereby achieving the overall cooling of the roller body 1. The cold air inside the vent pipe B10 can be discharged through the arrangement of the vortex coil 11. At the same time, the cold air discharged from the vortex coil 11 pushes the cold air inside the roller body 1 to move in the same direction, thereby ensuring that the cold air is in complete contact with the inner wall of the roller hole 6.

[0033] Specifically, the guide component is arranged on the roller body 1 and the ventilation component, and the guide component includes a cross positioning frame 19 and a positioning frame slide groove 23. The positioning frame slide groove 23 is opened on the circumferential inner wall of the roller hole 6. Two cross positioning frames 19 are provided, one of which is fixedly connected to the circumferential surface of the ventilation pipe A9, and the other cross positioning frame 19 is fixedly connected to the circumferential surface of the ventilation pipe B10. Both cross positioning frames 19 are slidably connected in the positioning frame slide groove 23.

[0034] In a specific embodiment of the present invention, the positioning frame slot 23 is provided for slidingly connecting the cross positioning frame 19, and the cross positioning frame 19 is slidably connected in the positioning frame slot 23, so that the stability of the vent pipe A9 and the vent pipe B10 can be improved, and at the same time, the vent pipe A9 and the vent pipe B10 can be easily connected, thereby improving the installation and disassembly rate between the vent pipe A9 and the vent pipe B10.

[0035] Specifically, the cold air discharge mechanism is arranged on the ventilation mechanism, and the cold air discharge mechanism includes a threaded tube 8, a vortex coil 11 and an air outlet 12. Two threaded tubes 8 are provided, one of which is fixedly connected to the circumferential surface of the ventilation pipe A9, and the other threaded tube 8 is fixedly connected to the circumferential surface of the ventilation pipe B10. The vortex coil 11 is fixedly connected to the circumferential surface of the ventilation pipe B10. A plurality of air outlets 12 are provided, and the plurality of air outlets 12 are all opened on the vortex coil 11.

[0036] In a specific embodiment of the present invention, the cold air inside the vent pipe A9 and the vent pipe B10 can be discharged through the arrangement of the docking tube 21, and the cold air can enter the heat dissipation hole 3 by aligning the docking tube 21 with the heat dissipation hole 3, thereby cooling the area with a thicker diameter of the roller body 1. At the same time, the gas discharged from the heat dissipation hole 3 can sweep the hot-rolled strip, thereby removing scrap iron on the surface of the hot-rolled strip, and the cold air after contacting the hot-rolled strip is blocked and then flows in the opposite direction to sweep the surface of the roller body 1.

[0037] Specifically, the air intake component is arranged on the ventilation pipe B10, and the air intake component includes a plug-in tube 15 and an air intake pipe 17. The plug-in tube 15 is movably plugged into one end of the ventilation pipe B10, and the air intake pipe 17 is fixedly connected to the circumferential surface of the plug-in tube 15.

[0038] In a specific embodiment of the present invention, the air inlet pipe 17 should be connected to a refrigeration device (not shown in the figure), and cold air is transported through the air inlet pipe 17. The cold air enters the ventilation pipe B10 through the air inlet pipe 17 and the plug-in tube 15. The plug-in tube 15 is movably plugged into the ventilation pipe B10, so that the plug-in tube 15 can be in a stationary state when the ventilation pipe B10 rotates.

[0039] Specifically, the control component is arranged on the air intake component, and the control component includes an air blocking ring 13, a connecting frame 14 and an electric telescopic rod 16. The air blocking ring 13 is movably inserted into the ventilation pipe B10, the connecting frame 14 is fixedly connected to the circumferential inner wall of the air blocking ring 13, the electric telescopic rod 16 is fixedly connected to one end of the plug-in tube 15, and the extended end of the electric telescopic rod 16 movably penetrates the plug-in tube 15 and is fixedly connected to the connecting frame 14.

[0040] In a specific embodiment of the present invention, the electric telescopic rod 16 is extended to drive the connecting frame 14 to move, and the movement of the connecting frame 14 can drive the air blocking ring 13 to move. The movement of the air blocking ring 13 can block the air inlet of the vortex coil 11, thereby preventing the cold air inside the ventilation pipe B10 from entering the vortex coil 11, and preventing the cold air from entering the vortex coil 11 when the cold air is insufficient.

[0041] The working principle of a hot-rolled steel strip strong spreading roller provided by the present invention is: The two threaded tubes 8 are provided to discharge the cold air in the vent pipe A9 and the vent pipe B10, thereby cooling the inside of the roller hole 6. Due to the special shape of the two threaded tubes 8, the cold air can be blown to the inner wall of the roller hole 6, thereby realizing the overall cooling of the roller body 1. The vortex coil 11 is provided to discharge the cold air in the vent pipe B10. At the same time, the cold air discharged by the vortex coil 11 pushes the cold air in the roller body 1 to move in the same direction, thereby ensuring that the cold air is in full contact with the inner wall of the roller hole 6. The cold air in the vent pipe A9 and the vent pipe B10 can be discharged by setting the butt joint 21, and the cold air can enter the heat dissipation hole 3 by aligning the butt joint 21 with the heat dissipation hole 3, so as to cool down the area with a thicker diameter of the roll body 1, and the gas discharged from the heat dissipation hole 3 can blow the hot-rolled steel strip, so as to remove the scrap iron on the surface of the hot-rolled steel strip, and the cold air that contacts the hot-rolled steel strip is blocked and then flows in the reverse direction, so as to blow the surface of the roll body 1; The connecting frame 14 can be driven to move by extending the electric telescopic rod 16, and the movement of the connecting frame 14 can drive the air blocking ring 13 to move. The movement of the air blocking ring 13 can block the air inlet of the vortex coil 11, thereby preventing the cold air inside the ventilation pipe B10 from entering the vortex coil 11, and preventing the cold air from entering the vortex coil 11 when the cold air is insufficient.

[0042] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hot-rolled steel strip strong rolling roll, characterized in that: include; Roller body (1); Two strong expansion grooves (2) are provided, and both of the two strong expansion grooves (2) are provided on the roller body (1); A positioning groove A (4) is provided on the roller body (1); A positioning groove B (5) is provided on the roller body (1); A ventilation mechanism is provided on the roller body (1); The cold air discharge mechanism is arranged on the ventilation mechanism; An air intake mechanism is arranged on one side of the roller body (1), the air intake mechanism is connected to the ventilation mechanism, and the air intake mechanism needs to be connected to the refrigeration equipment.

2. The hot strip strong spreading roller according to claim 1, characterized in that: The ventilation mechanism comprises: A mounting component, arranged on the roller body (1); A ventilation component, provided on the mounting component; An exhaust component, arranged on the ventilation component and the roller body (1); The guide component is arranged on the roller body (1) and the ventilation component.

3. The hot strip strong spreading roller according to claim 2, characterized in that: The mounting component comprises a roller hole (6), a mounting cover (18) and a mounting groove (22); the roller hole (6) is formed on the roller body (1); two mounting grooves (22) are provided, and the two mounting grooves (22) are respectively formed at two ends of the roller body (1); two mounting covers (18) are provided, and each mounting cover (18) is detachably connected to each mounting groove (22) by means of bolts.

4. The hot strip strong spreading roller according to claim 3, characterized in that: The ventilation component comprises a ventilation pipe A (9), a ventilation pipe B (10) and a connecting sleeve (20); the ventilation pipe A (9) is fixedly connected to one end of the mounting cover (18), and the ventilation pipe A (9) passes through the mounting cover (18) and is movably inserted into the mounting cover (18); the ventilation pipe B (10) is fixedly connected to one end of the mounting cover (18), and one end of the ventilation pipe B (10) passes through the mounting cover (18) and extends to the inner side of the roller body (1); the connecting sleeve (20) is fixedly connected to the circumferential surface of the ventilation pipe A (9), and the connecting sleeve (20) is movably sleeved on the ventilation pipe B (10).

5. The hot strip strong spreading roller according to claim 4, characterized in that: The exhaust component comprises a heat dissipation hole (3) and a butt joint pipe (21). A plurality of the heat dissipation holes (3) are provided. The plurality of heat dissipation holes (3) are all opened on the roller body (1), and the plurality of heat dissipation holes (3) are evenly distributed in the two strong expansion grooves (2). A plurality of butt joint pipes (21) are provided. The plurality of butt joint pipes (21) are respectively fixedly connected to the circumferential surfaces of the vent pipe A (9) and the vent pipe B (10), and the plurality of butt joint pipes (21) are evenly distributed, and each butt joint pipe (21) is aligned with each heat dissipation hole (3).

6. The hot strip strong spreading roller according to claim 5, characterized in that: The guide component comprises a cross positioning frame (19) and a positioning frame slide groove (23), wherein the positioning frame slide groove (23) is formed on the circumferential inner wall of the roller hole (6), and two cross positioning frames (19) are provided, wherein one of the cross positioning frames (19) is fixedly connected to the circumferential surface of the ventilation pipe A (9), and the other cross positioning frame (19) is fixedly connected to the circumferential surface of the ventilation pipe B (10), and both of the two cross positioning frames (19) are slidably connected in the positioning frame slide groove (23).

7. The hot strip strong spreading roller according to claim 6, characterized in that: The cold air discharge mechanism comprises a threaded tube (8), a vortex coil (11) and an air outlet (12), wherein two threaded tubes (8) are provided, one of which is fixedly connected to the circumferential surface of the ventilation pipe A (9), and the other threaded tube (8) is fixedly connected to the circumferential surface of the ventilation pipe B (10), the vortex coil (11) is fixedly connected to the circumferential surface of the ventilation pipe B (10), and a plurality of air outlets (12) are provided, and the plurality of air outlets (12) are all opened on the vortex coil (11).

8. The hot strip strong spreading roller according to claim 7, characterized in that: The air intake mechanism comprises: An air intake component, arranged on the vent pipe B (10); The control component is arranged on the air intake component.

9. The hot strip strong spreading roller according to claim 8, characterized in that: The air intake component comprises a plug-in tube (15) and an air intake pipe (17); the plug-in tube (15) is movably plugged into one end of the vent pipe B (10); and the air intake pipe (17) is fixedly connected to the circumferential surface of the plug-in tube (15).

10. The hot strip strong spreading roller according to claim 9, characterized in that: The control component comprises an air blocking ring (13), a connecting frame (14) and an electric telescopic rod (16); the air blocking ring (13) is movably plugged into the ventilation pipe B (10); the connecting frame (14) is fixedly connected to the circumferential inner wall of the air blocking ring (13); the electric telescopic rod (16) is fixedly connected to one end of the plug-in tube (15); and the extended end of the electric telescopic rod (16) movably penetrates the plug-in tube (15) and is fixedly connected to the connecting frame (14).

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