Device for reducing slag falling of coiling furnace

Abstract

The utility model relates to a device for reducing slag falling of a coiling furnace, which comprises a baffle plate and a base, the base is arranged at the position of a furnace mouth of the coiling furnace, the baffle plate is arranged on the base, the baffle plate comprises side baffle plates and middle baffle plates, a plurality of middle baffle plates are arranged between the two side baffle plates, and the middle baffle plates and the side baffle plates are connected into a whole through a compensation plate; a plurality of supporting plates are uniformly distributed at the middle positions of the lower parts of the side baffles and the middle baffles respectively, the bottom surfaces of the supporting plates are horizontal planes and are arranged on the base, one sides of the supporting plates are fixedly arranged on one sides of the corresponding side baffles and the middle baffles, and the supporting plates enable the side baffles and the middle baffles to be obliquely arranged on the base; the device is simple in structure and convenient to use, the slag baffle of the coiling furnace is effectively protected, and the rolling slag falling unplanned rate is reduced.

Description

Technical Field

[0001] This utility model relates to a slag-blocking device, specifically a device for reducing slag shedding from the coiling furnace, and belongs to the technical field of steel rolling equipment. Background Technology

[0002] A hot-rolled coil mill, also known as a Steckel mill, is a type of steel plate rolling mill. Its production line typically consists of a heating furnace, a reversible main mill, a steel plate collection system including a coiler, and other auxiliary equipment. The hot-rolled coil mill has in-furnace coilers before and after the main mill. During the rolling of thin-gauge coils, the steel plate is kept warm inside the furnace to reduce the rate of temperature drop during rolling.

[0003] A hot roll mill consists of a four-high finishing mill and two coiling furnaces. The coiling furnaces are generally placed above the rollers on both sides of the central mill and installed on the support frames on both sides of the rollers. They are used for the intermediate billet insulation and reheating of the coiled strip in the central mill. Currently, the slag baffles of the coiling furnaces in medium and heavy plate coil plants are frequently damaged and fail, resulting in a high rate of unplanned slag shedding from the rolled steel plates. Due to the inherent characteristics of rolling, such as tension cycles and steel stacking, the steel plates may unwind or bounce and scrape against the arc plates of the guide rollers, causing the slag baffles of the coiling furnaces to be damaged and fall off. In the later rolling process, due to the periodic low-frequency resonance between the steel plate and the furnace shell, refractory materials and other debris will fall onto the rolled plate, resulting in quality problems such as slag shedding from the coiling furnace on the steel plate surface. This problem is mainly concentrated in the unique rolling form of the coiling furnace. Several domestic hot roll mills have been improving their slag shedding control methods, but the results are not good. Hot roll mill manufacturers are constantly seeking ways to reduce slag shedding defects.

[0004] Therefore, developing a device that can solve the problem of slag shedding has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a device to reduce slag shedding in the coiling furnace. The device has a simple structure, is easy to use, and effectively reduces the slag baffle plate of the coiling furnace and reduces the unplanned slag shedding rate during coiling.

[0006] To solve the above technical problems, this utility model provides a device for reducing slag shedding from a coiling furnace, including a baffle and a base. The base is disposed at the furnace opening of the coiling furnace, and the baffle is disposed on the base, wherein:

[0007] The baffle includes side baffles and middle baffles. Multiple middle baffles are set between the two side baffles. The middle baffles and side baffles are connected as a whole by a compensating plate.

[0008] Several support plates are evenly distributed at the lower center of the side baffle and the middle baffle. The bottom surface of the support plate is horizontal and is set on the base. One side of the support plate is fixedly set on the corresponding side baffle and the middle baffle. The support plate makes the side baffle and the middle baffle tilted on the base.

[0009] The further defined technical solution of this utility model is:

[0010] Furthermore, in the aforementioned device for reducing slag shedding from the coiling furnace, four intermediate baffles are provided, and adjacent intermediate baffles are connected to the side baffles and adjacent intermediate baffles are connected by compensation plates.

[0011] Technical advantages: This utility model features four intermediate baffles and two side baffles, which lengthen the overall baffle length, facilitating maximum slag blocking and improving efficiency.

[0012] In the aforementioned device for reducing slag shedding from the coiling furnace, a set of fixing holes is provided on each side of the compensation plate. Each set of fixing holes has at least two separate fixing holes vertically arranged. The middle baffle and the side baffle are respectively provided with round holes at corresponding positions. The compensation plate connects the middle baffle and the side baffle through the fixing holes, round holes and bolts.

[0013] Technically, there will be a 10mm gap between the two intermediate baffles and between the intermediate baffle and the edge baffle. A compensating plate is used to connect and cover the gap to meet the usage requirements.

[0014] In the aforementioned device for reducing slag shedding from the coiling furnace, three support plates are evenly distributed at the middle position of the lower part of each intermediate baffle and side baffle.

[0015] In terms of technical effect, the baffle of this utility model is provided with a support plate behind it. The support plate not only makes the baffle tilt, but also acts as a reinforcing rib to maintain stability.

[0016] In the aforementioned device for reducing slag shedding from the coiling furnace, a through hole is vertically provided on the support plate, and the support plate is fixed to the base through the through hole and bolts.

[0017] Technical advantage: This utility model has through holes in the support plate, which facilitates the fixing of the support plate and the entire baffle to the base.

[0018] In the aforementioned device for reducing slag shedding from the coiling furnace, the baffle is tilted at an angle of 60-75° on the base.

[0019] Technically, this invention controls the angle of the baffle to 60-75°, which better prevents slag from falling from the coiling furnace.

[0020] In the aforementioned device for reducing slag shedding from the coiling furnace, the base includes a base platform and a base support frame. The base platform is set on the base support frame, which has an I-shaped structure. The base support frame (22) is set at the furnace opening of the coiling furnace.

[0021] In terms of technical benefits, this utility model uses an I-shaped base support frame to increase the height of the baffle, thereby avoiding high temperatures and ensuring safety. The lower part has a hollow structure, which facilitates the installation and disassembly of the baffle, saves materials, and reduces costs.

[0022] The beneficial effects of this utility model are:

[0023] The baffle of this utility model is assembled, and the number of intermediate baffles can be increased according to actual needs to adapt to coiling furnaces of different sizes, thus improving applicability. Gaps between adjacent intermediate baffles and side baffles are connected and sealed with compensating plates, making installation and disassembly convenient, improving sealing performance, and enhancing slag blocking effect.

[0024] The baffle of this utility model has been moved forward and its angle changed according to the state of the coil inside the coiling furnace. When the coil is uncoiled, the steel plate first collides with the base, and the base has been strengthened to a certain extent, which can effectively prevent the uncoiled steel coil from colliding with the baffle again. Several support plates (reinforcing ribs) have been added to the baffle to prevent accidents, which plays a double protection role.

[0025] The baffle of this utility model is provided with a support plate, which acts as a reinforcing rib to stabilize the baffle and give the baffle a certain degree of inclination, thus better blocking slag.

[0026] This invention reduces unplanned slag shedding from rolled steel plates. Compared with the original slag baffle, damaged areas can be replaced and repaired individually without the need for overall replacement, thus extending its service life and reducing maintenance. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the baffle structure in the device for reducing slag shedding from the coiling furnace according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 AA section view;

[0029] Figure 3 for Figure 1 Schematic diagram of the middle edge baffle;

[0030] Figure 4 for Figure 1 Schematic diagram of the middle baffle;

[0031] Figure 5 for Figure 1 Schematic diagram of the structure of the compensation plate;

[0032] Figure 6 This is a schematic diagram of the base structure in the device for reducing slag shedding from the coiling furnace according to an embodiment of the present invention;

[0033] In the diagram: 1-baffle, 11-side baffle, 12-middle baffle, 13-compensation plate, 131-fixing hole, 21-base platform, 22-base support frame, 3-support plate, 4-round hole. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them; the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0035] This embodiment provides a device for reducing slag shedding from the coiling furnace, the structure of which is as follows: Figure 1-2 As shown in Figure 6, the device includes a baffle 1 and a base. The base is welded and fixedly installed at the furnace opening of the coiling furnace. The baffle 1 is installed on the base and is arranged facing the direction of the furnace coiling mill.

[0036] The baffle 1 includes a side baffle 11 and a middle baffle 12. Four middle baffles 12 are arranged in the middle of the two side baffles 11. Adjacent middle baffles 12 and side baffles 11, and adjacent middle baffles 12 are connected to each other by a compensation plate 13 to form a whole.

[0037] Structure as Figure 3-5 As shown, the compensation plate 13 has a set of fixing holes 131 on both sides. Each set of fixing holes has two separate fixing holes 131 vertically. Except for the round holes opened at the back, the side baffle 11 and the middle baffle 12 have the same structure. The middle baffle 12 has round holes 4 at corresponding positions on both sides. The side baffle 11 and the middle baffle 12 have round holes 4 at corresponding positions on the side adjacent to the middle baffle 12. The compensation plate is set on the back of the baffle. The compensation plate 13 connects the middle baffle 12 and the side baffle 11 through the fixing holes 131, the round holes 4 and bolts.

[0038] Structure as Figure 2As shown, three support plates 3 are evenly distributed at the lower middle position of the side baffle 11 and the middle baffle 12. The bottom surface of the support plate 3 is horizontal and is set on the base. The support plate 3 has a through hole that penetrates through the support plate. The support plate 3 is fixed to the base through the through hole and bolts. One side of the support plate 3 is fixedly set to the side corresponding to the side baffle 11 and the middle baffle 12. The support plate 3 makes the side baffle 11 and the middle baffle 12 tilted at 60-75° on the base.

[0039] In this embodiment, the structure is as follows Figure 6 As shown, the base includes a base platform 21 and a base support frame 22. The base platform 21 is mounted on the base support frame 22, which has an I-shaped structure and is welded to the furnace opening of the coiling furnace. Through this improvement, the surface quality of the steel plates is now better during continuous mass production of wide, thin, high-surface rolled steel plates. Previously, the number of defects found on the surface of each rolled piece exceeding two points has essentially disappeared. It is estimated that this will reduce unplanned slag shedding by 1200 tons / year. The profit difference between genuine and contracted steel plates is 250 yuan / ton, therefore, the estimated profit is 300,000 yuan / year.

[0040] In addition to the embodiments described above, this utility model may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. A device for reducing the slagging of a coiler, characterized in that: The invention relates to a baffle (1) and a base, the base is arranged at the position of the furnace mouth of the winding furnace, the baffle (1) is arranged on the base, wherein: The baffle (1) comprises side baffle (11) and middle baffle (12), the middle of the two side baffles (11) is provided with a plurality of middle baffles (12), the middle baffle (12) and the side baffle (11) are connected as a whole by the compensation plate (13); The lower middle position of the side baffle (11) and the middle baffle (12) is respectively uniformly distributed with a plurality of support plates (3), the bottom surface of the support plate (3) is arranged on the base as a horizontal surface, one side of the support plate (3) is fixedly arranged on one side of the corresponding side baffle (11) and middle baffle (12), and the support plate (3) makes the side baffle (11) and the middle baffle (12) be arranged on the base in an inclined manner.

2. The device for reducing the slagging of a coiling furnace according to claim 1, characterized in that: The middle baffle (12) is provided with four blocks, the adjacent middle baffles (12) and the side baffles (11) and the adjacent two middle baffles (12) are connected by the compensation plate (13) respectively.

3. The device for reducing the slagging of a coiling furnace according to claim 1, characterized in that: The two sides of the compensation plate (13) are respectively provided with a group of fixed holes (131), each group of fixed holes is vertically provided with at least two separate fixed holes (131), the corresponding positions of the middle baffle (12) and the side baffle (11) are respectively provided with round holes (4), and the compensation plate (13) is connected with the middle baffle (12) and the side baffle (11) through the fixed holes (131), the round holes (4) and the bolts.

4. The device for reducing the slagging of a coiling furnace according to claim 1, characterized in that: The lower middle position of each middle baffle (12) and side baffle (11) is respectively uniformly distributed with three support plates (3).

5. The device for reducing the slagging of a coiling furnace according to claim 1, characterized in that: The support plate (3) is vertically provided with a through hole penetrating the support plate, and the support plate (3) is fixed on the base through the through hole and the bolt.

6. The device for reducing the slagging of a coiling furnace according to claim 1, characterized in that: The baffle (1) is inclined on the base by 60-75°.

7. The device for reducing the slagging of a coiling furnace according to claim 1, characterized in that: The base comprises a base platform (21) and a base support frame (22), the base platform (21) is arranged on the base support frame (22), the base support frame (22) is in an I-shaped structure, and the base support frame (22) is arranged at the position of the furnace mouth of the winding furnace.

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