A dust removal device for a hot rolling mill finishing unit

Abstract

This utility model relates to the technical field of hot rolling mill finishing equipment, and discloses a dust removal device for a hot rolling mill finishing unit, including a dust collection box, a semi-rigid dust collection pipe, a dust collection hood, a filter plate, an exhaust fan, a feeding cylinder, a slag discharge pipe, a stirring assembly, a motor, a first cleaning assembly, a second cleaning assembly, and a transmission assembly. The semi-rigid dust collection pipe is fixedly installed on the dust collection box and connected to the dust collection box. The dust collection hood is fixedly installed at the end of the semi-rigid dust collection pipe away from the dust collection box. The feeding cylinder is fixedly installed at the bottom center of the dust collection box, and the slag discharge pipe is fixedly installed on the feeding cylinder. The motor is fixedly installed at the bottom end of the feeding cylinder, and the exhaust fan is fixedly installed at the top of the dust collection box. This utility model has the following advantages and effects: it can effectively solve the problems of dust collection pipe blockage, untimely filter material cleaning, and poor slag discharge, thereby effectively improving dust removal efficiency and stability, and ensuring the safety of the production environment and equipment operation.

Description

Technical Field

[0001] This utility model relates to the technical field of hot rolling finishing equipment, and in particular to a dust removal device for a hot rolling finishing mill. Background Technology

[0002] During the production process of a hot-rolled finishing mill, the high-temperature rolled workpieces generate a large amount of iron oxide dust, iron oxide scale fragments, and impurities carried by cooling water vapor as they undergo multiple rolling passes. These pollutants not only severely pollute the workshop environment and affect the health of operators, but may also adhere to the equipment surface, accelerating equipment wear, reducing equipment lifespan, and even causing abnormal operation of key components such as guides and rolls in the finishing mill due to dust accumulation, affecting rolling accuracy and production efficiency. To solve these problems, existing technologies typically employ dust removal devices to collect and treat dust in the finishing rolling area. Common dust removal devices usually consist of a dust collection hood, conveying pipelines, a dust collection box, and an exhaust system. The negative pressure generated by the exhaust system draws the dust into the dust collection box through the dust collection hood and conveying pipelines, and then the dust is filtered through filter media before being discharged as clean air.

[0003] However, existing dust removal devices still have many shortcomings in practical applications: On the one hand, the dust generated by hot rolling mill has high moisture content and high viscosity, and it is easy to adhere to the wall surface when flowing through the conveying pipeline and dust collection hood. Long-term accumulation can easily cause pipeline blockage, reduce ventilation efficiency, and is difficult to clean, requiring frequent shutdowns for maintenance, which affects the continuity of production; on the other hand, the filter material in the dust collection box is easily blocked by dust during the filtration process, especially in high-concentration dust environments, where the air permeability of the filter material decreases rapidly, leading to a deterioration in dust removal effect. Existing devices do not have sufficient design for the cleaning structure of the filter material, making it difficult to achieve efficient automatic cleaning; in addition, the dust collected in the dust collection box is prone to accumulating and agglomerating, causing poor slag discharge, requiring manual cleaning, which increases labor intensity.

[0004] Therefore, given the special operating conditions of hot rolling mills, there is an urgent need for a dust removal device that can effectively solve problems such as pipe blockage, untimely cleaning of filter materials, poor slag discharge, and air leakage, in order to improve dust removal efficiency and stability and ensure the safety of the production environment and equipment operation.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this utility model is to provide a dust removal device for hot rolling mill units, which can effectively solve the problems of dust collection pipe blockage, untimely cleaning of filter materials, and poor slag discharge, thereby effectively improving dust removal efficiency and stability, and ensuring the safety of the production environment and equipment operation.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a dust removal device for a hot rolling mill, comprising a dust collection box, a semi-rigid dust collection pipe, a dust collection hood, a filter plate, an exhaust fan, a feeding cylinder, a slag discharge pipe, a stirring assembly, a motor, a first cleaning assembly, a second cleaning assembly, and a transmission assembly.

[0008] The semi-rigid dust collection pipe is fixedly installed on the dust collection box and connected to the dust collection box. The dust collection hood is fixedly installed at the end of the semi-rigid dust collection pipe away from the dust collection box. The feeding cylinder is fixedly installed at the bottom center of the dust collection box, and the slag discharge pipe is fixedly installed on the feeding cylinder. The motor is fixedly installed at the bottom end of the feeding cylinder. The exhaust fan is fixedly installed at the top of the dust collection box, and the air inlet of the exhaust fan is connected to the dust collection box. The filter plate is hemispherical and fixedly installed on the top inner wall of the dust collection box, and the filter plate is adapted to the air inlet of the exhaust fan. The stirring assembly is installed inside the dust collection box, and the stirring assembly is connected to the output shaft of the motor. The first cleaning assembly is installed inside the semi-rigid dust collection pipe and the dust collection hood. The second cleaning assembly is installed on the stirring assembly and adapted to the filter plate. The transmission assembly is installed on the first cleaning assembly and connected to the stirring assembly. A support frame is fixedly installed on the dust collection box.

[0009] A further feature of this invention is that the stirring assembly includes a rotating shaft and multiple stirring rods. The rotating shaft is rotatably mounted on the bottom inner wall of the feeding cylinder. The bottom end of the rotating shaft is axially fixedly connected to the output shaft of the motor. Multiple stirring rods are fixedly mounted on the rotating shaft.

[0010] By adopting the above technical solution, the rotation of the shaft can be controlled when the motor is working, thereby turning over the debris in the dust collection box to prevent excessive accumulation and clumping, thus avoiding affecting normal slag discharge.

[0011] A further feature of this invention is that the cleaning component includes a spiral scraper, a support ring, and multiple scraper strips. The support ring is rotatably installed inside the semi-rigid dust collection pipe, and the spiral scraper is fixedly installed on the support ring. The outer periphery of the spiral scraper is in movable contact with the inner wall of the semi-rigid dust collection pipe. Multiple scraper strips that are in movable contact with the inner wall of the dust collection hood are fixedly installed on the side of the support ring away from the spiral scraper.

[0012] By adopting the above technical solution, the semi-rigid dust collection pipe and dust collection hood can be cleaned when the spiral scraper and multiple scrapers rotate under the action of the support shaft, thus avoiding clogging problems.

[0013] A further feature of this invention is that the second cleaning component includes multiple cleaning brushes, and multiple arc-shaped cleaning brushes are fixedly installed at the top of the rotating shaft, with all multiple cleaning brushes making movable contact with the outer periphery of the filter plate.

[0014] By adopting the above technical solution, it is possible to control multiple cleaning brushes to clean the filter plate while the shaft is rotating.

[0015] A further feature of this invention is that the transmission assembly includes a horizontal shaft and two bevel gears, a support rod is fixedly mounted on the spiral scraper, a horizontal shaft is radially fixedly mounted on the support rod, and bevel gears are fixedly sleeved on both the horizontal shaft and the rotating shaft, with the two bevel gears meshing with each other.

[0016] By adopting the above technical solution, the spiral scraper can be driven to rotate when the shaft rotates.

[0017] A further feature of this invention is that the same spherical shell is rotatably mounted on the rotating shaft and the horizontal shaft, and both bevel gears are located inside the spherical shell.

[0018] By adopting the above technical solution, bevel gears can be shielded and protected, preventing them from being disturbed by debris and affecting their normal operation.

[0019] A further feature of this invention is that a bracket is fixedly installed on the side wall of the dust collection box, and the horizontal shaft is rotatably connected to the bracket.

[0020] By adopting the above technical solution, stable support can be provided for the horizontal axis.

[0021] A further feature of this invention is that a spiral blade is fixedly installed on the rotating shaft, and the spiral blade is located inside the feed cylinder.

[0022] By adopting the above technical solution, the rotation direction of the rotating shaft can be controlled to control the spiral blades for auxiliary slag discharge, while avoiding the accumulation of debris in the feed cylinder that would affect normal slag discharge.

[0023] A further feature of this invention is that an arc-shaped groove is provided on the inner wall of the top side of the slag discharge pipe, a rotating pin is rotatably installed in the arc-shaped groove, and a rotating sealing plate is radially fixedly installed on the rotating pin, which is in movable sealing contact with the inner wall of the arc-shaped groove. The bottom side and the front and rear sides of the rotating sealing plate are in movable sealing contact with the inner wall of the slag discharge pipe.

[0024] By adopting the above technical solution, the rotating sealing plate can be kept in a vertical position and the slag discharge pipe can be sealed when the exhaust fan draws air out of the dust collection box. At the same time, it can deflect the debris when it is discharged through the slag discharge pipe. This will not affect the normal slag discharge operation, nor will it affect the suction force of the dust collection hood due to excessive air leakage.

[0025] A further feature of this invention is that a wear-resistant layer is provided on the inner wall of both the semi-rigid dust collection pipe and the inner wall of the dust collection hood.

[0026] By adopting the above technical solutions, the wear resistance of the inner wall of semi-rigid dust collection pipes and dust collection hoods can be effectively improved, thereby extending their service life.

[0027] The beneficial effects of this utility model are:

[0028] By incorporating a dust collection hood, semi-rigid dust collection pipe, dust collection box, exhaust fan, and filter plates, the system effectively collects dust and other impurities generated during the operation of the hot rolling mill, thereby improving dust removal efficiency. The hemispherical design of the filter plates, combined with their adaptation to the exhaust fan inlet, effectively filters airborne impurities, further enhancing dust removal efficiency. The motor and agitator components work together to agitate the dust collected in the dust collection box, preventing clumping and ensuring smooth slag discharge. The spiral scraper and blades in the cleaning component further clean the semi-rigid dust collection pipe and the dust collector. The dust hood is effectively cleaned, while the cleaning brush in the second cleaning component cleans the filter plates, preventing them from being clogged by impurities and affecting the filtration effect. In addition, the meshing transmission of the bevel gears in the transmission component transmits the rotation of the shaft to the spiral scraper, which in turn drives the scraper to rotate, thereby achieving the cleaning of the semi-rigid dust collection pipe. At the same time, the spherical shell provides effective protection for the bevel gears, preventing interference from debris. The design of the spiral blades can adjust the direction of the shaft rotation to assist in slag discharge and prevent the discharge cylinder from clogging, so that the dust removal effect of the hot rolling mill can be effectively achieved during operation. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional structural diagram of a dust removal device for a hot-rolled finishing mill unit proposed in this utility model;

[0031] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0032] Figure 3 for Figure 2 Front view structural diagram;

[0033] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention;

[0034] Figure 5 for Figure 4 A schematic diagram of a partial three-dimensional structure;

[0035] Figure 6 This is a structural schematic diagram of a portion of the horizontal shaft, bevel gear, bracket, and cleaning assembly proposed in this utility model.

[0036] Figure 7 This is a schematic diagram of the structure of the dust collection box, the feeding cylinder, and the slag discharge pipe proposed in this utility model.

[0037] In the diagram, 1. Dust collection box; 11. Feeding cylinder; 111. Slag discharge pipe; 12. Exhaust fan; 121. Filter plate; 13. Semi-rigid dust collection pipe; 131. Dust collection hood; 2. Spiral scraper; 21. Support ring; 22. Scraper strip; 3. Rotating shaft; 31. Motor; 32. Stirring rod; 33. Spiral blade; 34. Cleaning brush; 4. Horizontal shaft; 401. Spherical shell; 402. Bracket; 41. Bevel gear; 5. Support frame. Detailed Implementation

[0038] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0039] Reference Figure 1-7 A dust removal device for a hot rolling mill includes a dust collection box 1, a semi-rigid dust collection pipe 13, a dust collection hood 131, a filter plate 121, an exhaust fan 12, a feeding cylinder 11, a slag discharge pipe 111, and a motor 31.

[0040] A support frame 5 is fixedly installed on the dust collection box 1. A semi-rigid dust collection pipe 13 is fixedly installed on the dust collection box 1 and connected to the dust collection box 1. A dust collection cover 131 is fixedly installed at the end of the semi-rigid dust collection pipe 13 away from the dust collection box 1. In order to effectively improve the wear resistance of the inner wall of the semi-rigid dust collection pipe 13 and the dust collection cover 131, thereby improving their service life, a wear-resistant layer is provided on the inner wall of the semi-rigid dust collection pipe 13 and the inner wall of the dust collection cover 131.

[0041] The feeding cylinder 11 is fixedly installed at the bottom center of the dust collection box 1, and the slag discharge pipe 111 is fixedly installed on the feeding cylinder 11. The motor 31 is fixedly installed at the bottom end of the feeding cylinder 11. The exhaust fan 12 is fixedly installed at the top of the dust collection box 1, and the air inlet of the exhaust fan 12 is connected to the dust collection box 1. The filter plate 121 is hemispherical and fixedly installed on the top inner wall of the dust collection box 1, and the filter plate 121 is adapted to the air inlet of the exhaust fan 12.

[0042] A rotating shaft 3 is rotatably installed on the bottom inner wall of the feeding cylinder 11. The bottom end of the rotating shaft 3 is axially fixedly connected to the output shaft of the motor 31. Multiple stirring rods 32 are fixedly installed on the rotating shaft 3, which can control the rotation of the rotating shaft 3 when the motor 31 is working, so as to stir the debris in the dust collection box 1, avoid excessive accumulation and clumping, and thus avoid affecting the normal slag discharge.

[0043] A rotating shaft 3 is rotatably installed on the bottom inner wall of the feeding cylinder 11. The bottom end of the rotating shaft 3 is axially fixedly connected to the output shaft of the motor 31. Multiple stirring rods 32 are fixedly installed on the rotating shaft 3, which can control the rotation of the rotating shaft 3 when the motor 31 is working, so as to stir the debris in the dust collection box 1, avoid excessive accumulation and clumping, and thus avoid affecting the normal slag discharge.

[0044] A support ring 21 is rotatably installed inside the semi-rigid dust collection pipe 13. A spiral scraper 2 is fixedly installed on the support ring 21. The outer periphery of the spiral scraper 2 is in contact with the inner wall of the semi-rigid dust collection pipe 13. Multiple scraper strips 22 that are in contact with the inner wall of the dust collection hood 131 are fixedly installed on the side of the support ring 21 away from the spiral scraper 2. This allows the cleaning operation of the semi-rigid dust collection pipe 13 and the dust collection hood 131 to be realized when the spiral scraper 2 and the multiple scraper strips 22 rotate under the action of the support shaft, thus avoiding clogging problems.

[0045] Multiple cleaning brushes 34 arranged in an arc shape are fixedly installed at the top of the rotating shaft 3. All cleaning brushes 34 are in active contact with the outer peripheral side of the filter plate 121, and can control the multiple cleaning brushes 34 to perform cleaning operation on the filter plate 121 when the rotating shaft 3 rotates.

[0046] A support rod is fixedly installed on the spiral scraper 2, and a horizontal shaft 4 is radially fixedly installed on the support rod. Both the horizontal shaft 4 and the rotating shaft 3 are fixedly fitted with bevel gears 41. The two bevel gears 41 mesh with each other and can drive the spiral scraper 2 to rotate when the rotating shaft 3 rotates.

[0047] Specifically, in order to provide shielding and protection for the bevel gear 41 and prevent it from being disturbed by debris and affecting normal operation, and at the same time to provide stable support for the horizontal shaft 4, the same spherical shell 401 is rotatably mounted on the rotating shaft 3 and the horizontal shaft 4, and both bevel gears 41 are located inside the spherical shell 401. A bracket 402 is fixedly mounted on the side wall of the dust collection box 1, and the horizontal shaft 4 is rotatably connected to the bracket 402.

[0048] Specifically, in order to control the rotation direction of the rotating shaft 3 to control the spiral blade 33 for auxiliary slag discharge, and to avoid the accumulation of debris in the feed cylinder 11 which would affect normal slag discharge, the spiral blade 33 is fixedly installed on the rotating shaft 3 and is located inside the feed cylinder 11.

[0049] Specifically, in order to keep the rotating sealing plate in a vertical position and seal the slag discharge pipe 111 when the exhaust fan 12 draws air out of the dust collection box 1, and to deflect the debris when it is discharged through the slag discharge pipe 111, so as not to affect the normal slag discharge operation and not to affect the suction force of the dust collection hood 131 due to excessive air leakage, an arc-shaped groove is opened on the inner wall of the top side of the slag discharge pipe 111. A rotating pin is rotatably installed in the arc-shaped groove, and a rotating sealing plate is radially fixed on the rotating pin, which is in movable sealing contact with the inner wall of the arc-shaped groove. The bottom side and the front and rear sides of the rotating sealing plate are in movable sealing contact with the inner wall of the slag discharge pipe 111.

[0050] The circuits, electronic components, and module mechanisms involved all employ existing technologies, which can be fully implemented by those skilled in the art, and need no further explanation. The content protected by this application does not involve any improvement to the software, circuits, or methods.

[0051] Working principle:

[0052] First, adjust the dust collection hood 131 to a position where dust is easily stirred up during the operation of the hot rolling mill and fix it in place. Then, turn on the power and start the exhaust fan 12. When the exhaust fan 12 is working, it draws out the air from the dust collection box 1 and creates a negative pressure inside. At this time, the free end of the rotating sealing plate abuts against the inner wall of the bottom side of the slag discharge pipe 111 and forms a seal. This allows the semi-rigid dust collection pipe 13 to capture and extract the dust and impurities generated during the operation of the hot rolling mill through the dust collection hood 131 and draw them into the dust collection box 1. Then, the dust is filtered and intercepted by the hemispherical filter plate 121, so that the dust can stay in the dust collection box 1 and prevent it from being discharged with the airflow.

[0053] Then, the motor 31 is started. The motor 31 drives the stirring rod 32 to rotate through the rotating shaft 3, which agitates the dust in the dust collection box 1 to prevent it from clumping due to long-term accumulation. At the same time, the cleaning brush 34 at the top of the rotating shaft 3 continuously cleans the surface of the filter plate 121 to ensure that the filter plate 121 will not reduce the filtration efficiency due to blockage. The spiral blades 33, driven by the rotating shaft 3, assist in discharging the dust that enters the feeding cylinder 11 upward into the dust collection box 1, preventing the feeding cylinder 11 from becoming blocked due to dust accumulation during the non-slag discharge stage.

[0054] The rotating shaft 3 transmits power to the horizontal shaft 4 through the bevel gear 41, so that the spiral scraper 2 and scraper strip 22 on the support ring 21 rotate synchronously, thereby removing the dust attached to its inner wall, avoiding blockage, and realizing the automatic cleaning function. At the same time, the spherical shell 401 can protect the bevel gear 41 from the interference of debris and ensure the transmission stability.

[0055] When the slag discharge pipe 111 needs to discharge slag, the control motor 31 rotates in reverse, causing the spiral blades 33 to discharge the dust in the dust collection box 1 downwards through the slag discharge pipe 111. At this time, the rotating sealing plate will automatically deflect when the dust passes through, allowing the dust and impurities to be discharged smoothly. In the non-slag discharge state, the rotating sealing plate remains vertical under its own weight and the suction force of the exhaust fan 12, tightly sealing the slag discharge pipe 111 to prevent air leakage from affecting the dust collection effect.

[0056] The dust removal device for a hot-rolled finishing mill provided by this utility model has been described in detail above. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A dust removal device for a hot-rolled finishing mill, characterized in that, It includes a dust collection box (1), a semi-rigid dust collection pipe (13), a dust collection hood (131), a filter plate (121), a blower (12), a feeding cylinder (11), a slag discharge pipe (111), a stirring assembly, a motor (31), a cleaning assembly one, a cleaning assembly two, and a transmission assembly; The semi-rigid dust collection pipe (13) is fixedly installed on the dust collection box (1) and connected to the dust collection box (1). The dust collection hood (131) is fixedly installed at the end of the semi-rigid dust collection pipe (13) away from the dust collection box (1). The feeding cylinder (11) is fixedly installed at the bottom center of the dust collection box (1), and the slag discharge pipe (111) is fixedly installed on the feeding cylinder (11). The motor (31) is fixedly installed at the bottom end of the feeding cylinder (11). The exhaust fan (12) is fixedly installed at the top of the dust collection box (1), and the air inlet of the exhaust fan (12) is connected to the dust collection box (1). The filter plate (121) is hemispherical and fixedly installed on the top inner wall of the dust collection box (1), and the filter plate (121) is adapted to the air inlet of the exhaust fan (12). The stirring assembly is installed in the dust collection box (1) and is connected to the output shaft of the motor (31). The first cleaning assembly is installed in the semi-rigid dust collection pipe (13) and the dust collection cover (131). The second cleaning assembly is installed on the stirring assembly and is adapted to the filter plate (121). The transmission assembly is installed on the first cleaning assembly and is connected to the stirring assembly. A support frame (5) is fixedly installed on the dust collection box (1).

2. The dust removal device for a hot-rolled finishing mill according to claim 1, characterized in that: The stirring assembly includes a rotating shaft (3) and multiple stirring rods (32). The rotating shaft (3) is rotatably mounted on the bottom inner wall of the feeding cylinder (11). The bottom end of the rotating shaft (3) is axially fixedly connected to the output shaft of the motor (31). Multiple stirring rods (32) are fixedly mounted on the rotating shaft (3).

3. The dust removal device for a hot-rolled finishing mill according to claim 1, characterized in that: The cleaning component includes a spiral scraper (2), a support ring (21), and multiple scraper strips (22). The support ring (21) is rotatably installed inside the semi-rigid dust collection pipe (13). The spiral scraper (2) is fixedly installed on the support ring (21). The outer periphery of the spiral scraper (2) is in contact with the inner wall of the semi-rigid dust collection pipe (13). Multiple scraper strips (22) that are in contact with the inner wall of the dust collection hood (131) are fixedly installed on the side of the support ring (21) away from the spiral scraper (2).

4. The dust removal device for a hot-rolled finishing mill according to claim 2, characterized in that: The second cleaning component includes multiple cleaning brushes (34). Multiple cleaning brushes (34) arranged in an arc shape are fixedly installed on the top of the rotating shaft (3). All cleaning brushes (34) are in active contact with the outer periphery of the filter plate (121).

5. A dust removal device for a hot-rolled finishing mill according to claim 3, characterized in that: The transmission assembly includes a horizontal shaft (4) and two bevel gears (41). A support rod is fixedly installed on the spiral scraper (2), and a horizontal shaft (4) is radially fixedly installed on the support rod. Both the horizontal shaft (4) and the rotating shaft (3) are fixedly fitted with bevel gears (41), and the two bevel gears (41) mesh with each other.

6. The dust removal device for a hot-rolled finishing mill according to claim 5, characterized in that: The same spherical shell (401) is rotatably mounted on the rotating shaft (3) and the horizontal shaft (4), and both bevel gears (41) are located inside the spherical shell (401).

7. A dust removal device for a hot-rolled finishing mill according to claim 5, characterized in that: A bracket (402) is fixedly installed on the side wall of the dust collection box (1), and the horizontal shaft (4) is rotatably connected to the bracket (402).

8. A dust removal device for a hot-rolled finishing mill according to claim 2, characterized in that: A spiral blade (33) is fixedly installed on the rotating shaft (3), and the spiral blade (33) is located inside the feed cylinder (11).

9. A dust removal device for a hot-rolled finishing mill according to claim 1, characterized in that: An arc-shaped groove is provided on the top inner wall of the slag discharge pipe (111). A rotating pin is rotatably installed in the arc-shaped groove. A rotating sealing plate is radially fixed on the rotating pin and is in movable sealing contact with the inner wall of the arc-shaped groove. The bottom side and the front and rear sides of the rotating sealing plate are in movable sealing contact with the inner wall of the slag discharge pipe (111).

10. A dust removal device for a hot-rolled finishing mill according to claim 1, characterized in that: The inner wall of the semi-rigid dust collection pipe (13) and the inner wall of the dust collection hood (131) are both provided with wear-resistant layers.

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