A strip pressing device for a rolling mill

Abstract

The application provides a rolling mill belt pressing device, and relates to the technical field of rolling mill production. The rolling mill belt pressing device comprises a ventilation cover, a blower, a ventilation pipe and a smoke exhaust cover. The ventilation cover is arranged at the outlet of the rolling mill and comprises an air outlet, an air exhaust and an air inlet. The air outlet is arranged towards the outlet of the rolling mill. The air exhaust is communicated with the smoke exhaust. The air inlet is communicated with the blower towards the side outside the ventilation cover. The air inlet is communicated with the ventilation pipe towards the side inside the ventilation cover. The ventilation pipe extends out of the ventilation cover from the air outlet and is used for blowing air towards the surface of the sheet belt output from the outlet of the rolling mill. The cross-sectional area of the ventilation pipe is smaller than the area of the air outlet. The mechanism for pressing the belt and the mechanism for extracting smoke and water vapor are integrated into one device, which can be installed in the limited space at the outlet of the rolling mill. The installation space is saved, the functions of extracting smoke and water vapor and pressing the sheet belt are simultaneously met, and the quality of the sheet belt rolled by the rolling mill is improved.

Description

A strip pressing device for rolling mills Technical Field

[0001] This invention relates to the field of rolling mill production technology, and more specifically, to a strip pressing device for rolling mills. Background Technology

[0002] A rolling mill is a piece of equipment that realizes the metal rolling process. It generally refers to the equipment that completes the entire process of rolling material production. It can be used to produce steel plates with relatively small thicknesses, i.e., thin plates and strips. However, when rolling thin slabs, the thin plates and strips exiting the rolling mill are prone to flying and curling at the head. Especially during high-speed rolling, the thin plates and strips are very likely to curl up at the head, affecting the quality of the rolled thin plates and strips. Moreover, the rolling process generates smoke, water vapor, and dust, which leads to poor lubrication of the internal structure of the rolling mill, affecting the production stability of the rolling mill and the quality of the rolled thin plates and strips. Summary of the Invention

[0003] The problem to be solved by this invention is how to improve the quality of thin strips rolled by a rolling mill.

[0004] To address this, the present invention provides a strip pressing device for a rolling mill, comprising a ventilation hood, a blower, a ventilation pipe, and a fume hood. The ventilation hood is installed at the outlet of the rolling mill and includes an air outlet, an exhaust outlet, and an air inlet. The air outlet faces the outlet of the rolling mill. The exhaust outlet is connected to the fume hood. The side of the air inlet facing out of the ventilation hood is connected to the blower. The side of the air inlet facing inwards from the ventilation hood is connected to the ventilation pipe. The ventilation pipe extends out of the ventilation hood from the air outlet and is used to blow air onto the surface of the thin strip output from the outlet of the rolling mill. The cross-sectional area of ​​the ventilation pipe is smaller than the area of ​​the air outlet.

[0005] Optionally, the ventilation hood is used to connect to the mill stand.

[0006] Optionally, the ventilation hood is a hexahedral structure missing two adjacent sides, one of the missing sides facing downwards and the other missing side facing the rolling mill stand, the two missing sides together forming the air outlet.

[0007] Optionally, the rolling mill pressing device also includes a silencer, and the silencer is provided on both sides of the blower.

[0008] Optionally, the rolling mill pressing device further includes a support frame for mounting on the ground, and the blower is connected to the support frame.

[0009] Optionally, the rolling mill pressing device further includes an air inlet pipe assembly, one end of which is connected to the blower and the other end of which is connected to the air inlet.

[0010] Optionally, the air inlet duct assembly includes a reducer and a bend. One end of the reducer is connected to the blower, and the other end of the reducer is connected to the bend. The bend is used to change the direction of the duct, and the end of the bend away from the reducer is connected to the air inlet.

[0011] Optionally, the end of the ventilation duct away from the air inlet is a curved structure, which is used to bend in a direction away from the mill outlet.

[0012] Optionally, a grille is provided at the outlet of the ventilation duct.

[0013] Optionally, the rolling mill pressing device further includes a sealing ring disposed between the air inlet and the ventilation pipe.

[0014] Compared with the prior art, the advantages of the rolling mill pressing device of the present invention are:

[0015] This invention relates to a ventilation hood installed at the exit of a rolling mill. The ventilation hood is a hood structure with an air outlet, exhaust outlet, and air inlet in different directions. The exhaust outlet is located at the mill exit, and the exhaust outlet is connected to a smoke exhaust fan. This allows the smoke exhaust fan to extract the smoke and moisture generated during rolling mill production through the ventilation hood, preventing the smoke and moisture from affecting the mill structure and improving the production quality of thin strip. The air inlet on the ventilation hood connects to a blower at its outward-facing end and to one end of a ventilation duct at its inward-facing end. The other end of the ventilation duct leads to the air outlet. The ventilation duct extends in a certain direction and extends from the air outlet to the thin strip produced by the mill. As a result, the air blown by the blower can be blown along the ventilation duct to the surface of the thin strip to flatten it on the output platform of the mill, preventing the thin strip from warping and improving the production quality of the thin strip. At the same time, the cross-sectional area of ​​the ventilation duct is smaller than the area of ​​the air outlet, so that there is a gap between the ventilation duct and the air outlet. In this way, the ventilation duct will not affect the flow of dust and water vapor from the air outlet to the exhaust port and the exhaust fan, that is, it will not affect the work of extracting dust and water vapor at the mill outlet. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the rolling mill pressing device according to an embodiment of the present invention;

[0017] Figure 2 is a schematic diagram of the structure of the rolling mill pressing device according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1-Ventilation hood; 11-Air outlet; 12-Exhaust outlet; 13-Air inlet; 21-Blower; 22-Silencer; 3-Ventilation duct; 31-Grate plate; 4-Bracket; 5-Air inlet duct assembly; 51-Reducing pipe; 52-Bend; 6-Connecting plate; 71-Rolling mill; 72-Thin sheet and strip; 73-Output platform. Detailed Implementation

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] It should be noted that in the description of this invention, the orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "top," "bottom," "front," "back," "inner," and "outer" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention. They are not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this invention.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0023] Furthermore, although specific embodiments have been described herein, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features herein can be combined in ways not used as described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other embodiments.

[0024] To solve the above problems, as shown in Figures 1 and 2, the present invention provides a strip pressing device for a rolling mill, including a ventilation hood 1, a blower 21, a ventilation pipe 3, and a smoke exhaust fan. The ventilation hood 1 is located at the outlet of the rolling mill 71 and includes an air outlet 11, an air exhaust port 12, and an air inlet 13. The air outlet 11 is located facing the outlet of the rolling mill 71. The air exhaust port 12 is connected to the smoke exhaust fan. The side of the air inlet 13 facing outwards from the ventilation hood 1 is connected to the blower 21. The side of the air inlet 13 facing inwards from the ventilation hood 1 is connected to the ventilation pipe 3. The ventilation pipe 3 extends out of the ventilation hood 1 from the air outlet 11 and is used to blow air onto the surface of the thin strip 72 output from the outlet of the rolling mill 71. The cross-sectional area of ​​the ventilation pipe 3 is smaller than the area of ​​the air outlet 11.

[0025] The cross-sectional area of ​​ventilation duct 3 refers to the area of ​​the section perpendicular to its axial direction. Specifically, the smoke exhaust fan may include a smoke exhaust duct and a vacuum pump. The smoke exhaust duct is connected to the exhaust port 12, and the vacuum pump is installed inside the smoke exhaust duct to extract smoke, dust, and water vapor during operation.

[0026] In this embodiment, a ventilation hood 1 is installed at the outlet of the rolling mill 71. The ventilation hood 1 is a hood structure with an air outlet 11, an exhaust port 12, and an air inlet 13 in different directions. The air outlet 11 covers the outlet of the rolling mill 71, and the exhaust port 12 is connected to the exhaust fan. This allows the exhaust fan to extract the smoke and moisture generated by the rolling mill 71 through the ventilation hood 1, preventing the smoke and moisture from affecting the structure of the rolling mill 71 and improving the production quality of the thin strip 72. The air inlet 13 on the ventilation hood 1 has one end connected to the blower 21 facing outwards and one end connected to one end of the ventilation pipe 3 facing inwards. The other end of the ventilation pipe 3 leads to the air outlet 11. The ventilation duct 3 extends in one direction and extends from the air outlet 11, so that the outlet of the ventilation duct 3 faces the thin strip 72 produced by the rolling mill 71. Then, the air blown by the blower 21 can blow along the ventilation duct 3 to the surface of the thin strip 72, so as to flatten the thin strip 72 on the output platform 73 of the rolling mill 71, prevent the thin strip 72 from warping, and improve the production quality of the thin strip 72. At the same time, the cross-sectional area of ​​the ventilation duct 3 is smaller than the area of ​​the air outlet 11, so that there is a gap between the ventilation duct 3 and the air outlet 11. In this way, the ventilation duct 3 will not affect the flow of dust and water vapor from the air outlet 11 to the exhaust port 12 and the exhaust fan, that is, it will not affect the work of extracting dust and water vapor at the outlet of the rolling mill 71.

[0027] This invention integrates the mechanism for pressing the strip and the mechanism for extracting dust and moisture into one device, which can be installed in the limited space at the exit of the rolling mill 71. This saves installation space and simultaneously satisfies the functions of extracting dust and moisture and flattening the thin strip 72, thereby effectively improving the quality of the thin strip 72 rolled by the rolling mill 71.

[0028] Optionally, as shown in FIG1, the ventilation hood 1 is used to connect to the stand of the rolling mill 71.

[0029] In this embodiment, by connecting the ventilation hood 1 to the mill 71 stand, the connection structure can be such that a connecting plate 6 is provided on the side of the ventilation hood 1 facing the mill 71 stand, and the position of the ventilation hood 1 is fixed by bolting the connecting plate 6 to the mill 71 stand, thereby improving the structural stability of the connection between the ventilation hood 1 and the mill 71.

[0030] Optionally, as shown in Figure 2, the ventilation hood 1 is a hexahedral structure missing two adjacent sides, one of the missing sides facing downwards, and the other missing side facing the mill 71 archway. The two missing sides together form the air outlet 11.

[0031] In this embodiment, the enclosure formed by the ventilation hood 1 can be a hexahedral structure. The hexahedral structure lacks the bottom and the side facing the mill 71 archway, that is, the face facing the negative Z-axis direction and the face facing the negative Y-axis direction. The two missing faces together form the air outlet 11, increasing the area of ​​the air outlet 11 and improving the efficiency of absorbing smoke, dust and water vapor.

[0032] Specifically, the ventilation hood 1 can also be a spherical structure or other structures, as long as the missing parts face the negative Z-axis and the negative Y-axis respectively. The exhaust port 12 can be opened on the surface of the ventilation hood 1 facing the positive X-axis, and the air inlet 13 can be opened on the surface facing the positive Z-axis. The surfaces where the exhaust port 12 and the air inlet 13 are located can also be other surfaces of the ventilation hood 1, as long as the exhaust port 12 and the air inlet 13 are not on the same surface of the ventilation hood 1.

[0033] Optionally, as shown in Figure 1, the rolling mill pressing device further includes a silencer 22, and the silencer 22 is provided on both sides of the blower 21.

[0034] In this embodiment, by providing silencers 22 on both blowers 21, the noise generated by the blower 21 during operation is reduced, thereby reducing noise pollution.

[0035] Optionally, as shown in Figure 1, the rolling mill pressing device further includes a support 4, which is used to be installed on the ground, and the blower 21 is connected to the support 4.

[0036] In this embodiment, the bracket 4 is fixed on the ground by setting up the bracket 4. The specific structure can be fixed by expansion bolts. Then the blower 21 is connected to the bracket 4. The specific structure can be connected by bolts, which makes it easy to fix the position of the blower 21.

[0037] Optionally, as shown in Figure 1, the rolling mill pressing device further includes an air inlet pipe assembly 5, one end of which is connected to the blower 21 and the other end of which is connected to the air inlet 13.

[0038] In this embodiment, by setting up an air inlet pipe assembly 5, the two ends of the air inlet pipe assembly 5 are respectively connected to the blower 21 and the air inlet 13, which facilitates the connection between the blower 21 and the air inlet 13.

[0039] Specifically, the air inlet duct assembly 5 is connected to the blower 21 via the silencer 22.

[0040] Optionally, as shown in Figure 1, the air inlet duct assembly 5 includes a reducing pipe 51 and a bend 52. One end of the reducing pipe 51 is connected to the blower 21, and the other end of the reducing pipe 51 is connected to the bend 52. The bend 52 is used to change the direction of the pipeline, and the end of the bend 52 away from the reducing pipe 51 is connected to the air inlet 13.

[0041] In this embodiment, a reducing pipe 51 and a bend 52 are sequentially arranged between the blower 21 and the air inlet 13. The two ends of the reducing pipe 51 are connected to the blower 21 and the bend 52, respectively. The shape and size of the two ends of the reducing pipe 51 correspond to the outlet of the blower 21 and the bend 52, respectively, so that the blower 21 and the bend 52 can be connected. The shape and size of the two ends of the reducing pipe 51 can be changed to accommodate blowers 21 and bends 52 of different specifications. The end of the bend 52 away from the blower 21 is connected to the air inlet 13. The bend 52 is a curved pipe, and its bending angle can be determined according to the actual working conditions, such as 90 degrees. The bend 52 can change the air direction, which facilitates the connection between the blower 21 and the air inlet 13.

[0042] Optionally, as shown in Figure 1, the end of the ventilation pipe 3 away from the air inlet 13 is a curved structure, which is used to bend in a direction away from the outlet of the rolling mill 71.

[0043] In this embodiment, by setting the end of the ventilation pipe 3 away from the air inlet 13 as a curved structure, the curved structure is conducive to air gathering and can increase the air volume, so that the air blows towards the thin strip 72. The curved structure is oriented away from the outlet of the rolling mill 71, which can avoid the blown airflow from obstructing the output of the thin strip 72 or causing the thin strip 72 to pile up, which is conducive to the flattening of the thin strip 72.

[0044] Optionally, as shown in Figure 1, a fence plate 31 is provided at the outlet of the ventilation pipe 3.

[0045] In this embodiment, by setting a fence plate 31 at the outlet of the ventilation pipe 3, debris can be blocked from entering the ventilation pipe 3. On the other hand, the setting direction of the fence plate 31 is the same as the extension direction of the outlet end of the ventilation pipe 3, which plays a role in guiding the air.

[0046] Optionally, the rolling mill pressing device further includes a sealing ring, which is disposed between the air inlet 13 and the ventilation pipe 3.

[0047] In this embodiment, by setting a sealing ring between the air inlet 13 and the ventilation pipe 3, the airtightness between the air inlet 13 and the ventilation pipe 3 is improved, and gas leakage is prevented.

[0048] Specifically, sealing rings are provided at the connection points of blower 21, reducer 51, and bend 52 to improve airtightness.

[0049] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A strip pressing device for a rolling mill, characterized in that, The system includes a ventilation hood (1), a blower (21), a ventilation duct (3), and a smoke exhaust fan. The ventilation hood (1) is installed at the outlet of the rolling mill (71) and includes an air outlet (11), an exhaust port (12), and an air inlet (13). The air outlet (11) is positioned facing the outlet of the rolling mill (71). The exhaust port (12) is connected to the smoke exhaust fan. The side of the air inlet (13) facing outwards from the ventilation hood (1) is connected to the blower (21), and the side of the air inlet (13) facing inwards from the ventilation hood (1) is connected to the blower (21). The ventilation duct (3) is connected to the ventilation hood (1) extending from the air outlet (11) and is used to blow air toward the surface of the thin strip (72) output from the outlet of the rolling mill (71). The cross-sectional area of ​​the ventilation duct (3) is smaller than the area of ​​the air outlet (11). The ventilation hood (1) is a hexahedral structure missing two adjacent sides. One of the missing sides faces downward, and the other missing side faces toward the rolling mill (71) archway. The two missing sides together form the air outlet (11).

2. The rolling mill pressing device according to claim 1, characterized in that, The ventilation hood (1) is used to connect to the archway of the rolling mill (71).

3. The rolling mill pressing device according to claim 1, characterized in that, It also includes a silencer (22), which is provided on both sides of the blower (21).

4. The rolling mill pressing device according to claim 1, characterized in that, It also includes a bracket (4) for mounting on the ground, and the blower (21) is connected to the bracket (4).

5. The rolling mill pressing device according to claim 1, characterized in that, It also includes an air inlet duct assembly (5), one end of which is connected to the blower (21) and the other end is connected to the air inlet (13).

6. The rolling mill pressing device according to claim 5, characterized in that, The air inlet duct assembly (5) includes a reducing pipe (51) and a bend (52). One end of the reducing pipe (51) is connected to the blower (21), and the other end of the reducing pipe (51) is connected to the bend (52). The bend (52) is used to change the direction of the pipeline. The end of the bend (52) away from the reducing pipe (51) is connected to the air inlet (13).

7. The rolling mill pressing device according to claim 1, characterized in that, The end of the ventilation pipe (3) away from the air inlet (13) is a curved structure, which is used to bend in the direction away from the outlet of the rolling mill (71).

8. The rolling mill pressing device according to claim 1, characterized in that, The ventilation duct (3) is provided with a fence plate (31) at its outlet.

9. The rolling mill pressing device according to claim 1, characterized in that, It also includes a sealing ring, which is disposed between the air inlet (13) and the ventilation pipe (3).

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