Water-cooled pull plate bottom-blowing furnace mouth sealing smoke hood

Abstract

The utility model discloses a water -cooling pull plate bottom -blowing furnace furnace mouth seal fume hood relates to bottom -blowing furnace slag cleaning technical field, including water -cooling fume hood, fume hood plate body, hoisting assembly, be equipped with fume hood mouth, smoke outlet pipe on water -cooling fume hood, be equipped with ring set trapezoidal fume hood on smoke outlet pipe, fume hood plate body swing installation is on fume hood mouth, be equipped with lifting lug on fume hood plate body, fume hood plate body inside is equipped with water -cooling channel, fume hood plate body outer edge is equipped with sealing element, fume hood plate body is equipped with top -supporting spare on the inner wall of fume hood mouth, hoisting assembly includes support axle, hoisting spare, through hoisting spare drive fume hood plate body opening and closing to open or close fume hood mouth, the inside cleaning of water -cooling fume hood is convenient, and the top -supporting spare of setting cooperates with converter coking, and when coking rotates, the top -supporting spare moves up to drive fume hood plate body to move up, fume hood plate body and converter direct joint deformation are avoided to fume hood plate body, thereby avoiding water -cooling fume hood leakage.

Description

Technical Field

[0001] This utility model relates to the field of bottom-blown furnace sealing technology, specifically to a sealing fume hood for the furnace opening of a water-cooled bottom-blown furnace with a pull plate. Background Technology

[0002] The banana-shaped fume hoods currently used in bottom-blown furnaces mainly consist of left and right side water-cooled baffles, water-cooled inserts, a front water-cooled baffle, and a rear (east) arc-shaped water-cooled baffle. Normal production inlet water pressure is 0.4-0.5 MPa, flow rate is 3-8 m³ / h (water flow rate is mainly adjusted according to outlet water temperature), and return water temperature is controlled below 60℃. Due to coke buildup in the furnace mouth area, the fume hood plates inserted into the bottom-blown furnace are easily bent by the coke buildup during furnace rotation (e.g., Figure 1 This caused water leakage in the water-cooled fume hood, posing a significant safety hazard. Furthermore, during the production process, the rear (east) arc-shaped water-cooled baffle, as well as the left and right water-cooled baffles, were severely deformed due to high-temperature burning, making water jacket replacement difficult and posing a high safety risk. Utility Model Content

[0003] The main purpose of this utility model is to provide a sealing fume hood for the furnace opening of a water-cooled bottom-blown furnace, which solves the problem that the fume hood plate inside the existing bottom-blown furnace banana fume hood is easily scratched and bent by coking, causing water leakage in the water-cooled fume hood.

[0004] To achieve the above objectives, this utility model provides a water-cooled bottom-blown furnace inlet sealing fume hood, including a water-cooled fume hood, a fume hood opening, and a fume outlet pipe; it also includes:

[0005] The exhaust pipe is equipped with a trapezoidal smoke hood.

[0006] The fume hood plate body is movable and installed on the fume hood opening; the fume hood plate body is provided with lifting lugs, the fume hood plate body is provided with a water cooling channel inside, the outer edge of the fume hood plate body is provided with a sealing element, and the inner wall of the fume hood plate body facing the fume hood opening is provided with a top support; the top support moves upward under the rotation of the bottom blowing furnace, thereby driving the fume hood plate to move upward relative to the fume hood opening.

[0007] The lifting assembly includes a support shaft mounted above the bottom-blown furnace and a lifting member mounted on the support shaft; a lifting steel rope is provided between the lifting member and the lifting lug; the lifting member drives the steel rope to move up or down under the action of external force, thereby causing the fume hood plate body to separate from or cover the fume hood opening.

[0008] As a further improvement of this utility model, the fume hood plate is provided with an inlet and an outlet that are connected to the water cooling channel.

[0009] As a further improvement of this utility model, the top support includes a wedge-shaped top support plate disposed on the smoke hood plate; the thickness of the wedge-shaped top support plate increases progressively, and the direction of the increase in the thickness of the wedge-shaped top support plate is consistent with the direction of rotation of the bottom-blown furnace.

[0010] As a further improvement of this utility model, a first inclined surface is provided on the inner wall of the smoke hood opening; a second inclined surface is provided on the outer edge of the smoke hood plate body; the first inclined surface and the second inclined surface are fitted together to reduce the friction between the smoke hood plate body and the smoke hood opening.

[0011] As a further improvement of this utility model, the sealing element includes thermal insulation cotton; the end face of the smoke hood plate body facing the smoke hood opening is provided with a refractory mud adhesion layer, and the inner side is filled with a refractory layer.

[0012] As a further improvement of this utility model, the lifting component includes a lifting hoist; the lifting hoist is connected to a lifting steel rope.

[0013] The beneficial effects of this utility model are reflected in:

[0014] The lifting component drives the fume hood plate body to open and close, thereby opening or closing the fume hood opening, facilitating the cleaning of the inside of the water-cooled fume hood. The top support component is designed to work with the converter coking. When the coking rotates, the top support component moves upward, thereby driving the fume hood plate body to move upward, preventing the fume hood plate body from being directly jammed and deformed with the converter, thus preventing water leakage from the water-cooled fume hood. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the original structure of a water-cooled bottom-blown furnace inlet sealing fume hood according to the present invention;

[0016] Figure 2 This is a schematic diagram of the annular trapezoidal smoke hood structure of a water-cooled bottom-blown furnace opening sealing smoke hood according to the present invention;

[0017] Figure 3 This is a schematic diagram of the overall structure of a water-cooled bottom-blown furnace opening sealing hood according to the present invention;

[0018] Figure 4 This is a schematic diagram of the smoke hood structure of a water-cooled bottom-blown furnace with a pull plate according to the present invention;

[0019] Figure 5 This is a schematic diagram of the main body structure of the smoke hood plate of a water-cooled bottom-blown furnace opening sealing smoke hood according to the present invention;

[0020] Figure 6 This is a schematic diagram of the main body structure of the smoke hood plate of a water-cooled bottom-blown furnace opening sealing smoke hood according to the present invention;

[0021] Figure 7This is a schematic diagram of the main body structure of the smoke hood plate of a water-cooled bottom-blown furnace opening sealing smoke hood according to the present invention;

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Water-cooled fume hood; 2. Fume hood body; 3. Fume hood opening; 4. Exhaust pipe; 5. Ring-shaped trapezoidal fume hood; 6. Lifting lug; 7. Water-cooling channel; 8. Sealing element; 9. Top support element; 901. Wedge-shaped top support plate; 902. Arc surface; 10. Support shaft; 11. Lifting element; 12. Lifting steel rope; 13. Water inlet; 14. Water outlet; 15. First inclined surface; 16. Second inclined surface; 17. Refractory mud adhesion layer; 18. Refractory layer; 19. Converter. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. 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.

[0025] In one embodiment, see Figure 1 The present invention relates to a water-cooled bottom-blown furnace opening sealing hood, comprising a water-cooled hood 1, a hood plate body 2, and a lifting assembly.

[0026] The water-cooled fume hood 1 is provided with a fume hood opening 3 and a smoke outlet pipe 4. A trapezoidal fume hood 5 is provided on the smoke outlet pipe 4. The fume hood plate body 2 is movably installed on the fume hood opening 3. The fume hood plate body 2 is provided with a lifting lug 6. A water-cooling channel 7 is provided inside the fume hood plate body 2. A sealing element 8 is provided on the outer edge of the fume hood plate body 2. A top support 9 is provided on the inner wall of the fume hood plate body 2 facing the fume hood opening 3. The top support 9 moves upward under the rotation of the bottom-blown furnace, thereby driving the fume hood plate to move upward relative to the fume hood opening 3. The lifting assembly includes a support shaft 10 set above the bottom-blown furnace and a lifting element 11 set on the support shaft 10. A lifting steel rope 12 is provided between the lifting element 11 and the lifting lug 6. The lifting element 11 drives the steel rope to move upward or downward under the action of external force, thereby causing the fume hood plate body 2 to separate or close from the fume hood opening 3.

[0027] Further, see Figure 3 , 5 6. The fume hood is provided with an inlet 13 and an outlet 14 that are connected to the water cooling channel 7.

[0028] Preferably, multiple sets of inlet 13 and outlet 14 are provided at intervals.

[0029] Further, see Figure 7 The top support 9 includes a wedge-shaped top support plate 901 disposed on the fume hood plate. The thickness of the wedge-shaped top support plate 901 increases progressively, and the direction of the increase in thickness of the wedge-shaped top support plate 901 is consistent with the direction of rotation of the bottom blow furnace.

[0030] Preferably, the cross-section of the wedge-shaped top support plate 901 is a triangular structure, and the end face of the wedge-shaped top support plate 901 away from the smoke hood plate is an arc surface 902.

[0031] In the above configuration, cold water is introduced into the water-cooling channel 7 through the inlet 13 to cool the smoke hood plate body 2. The water that has exchanged heat with the smoke hood plate body 2 is discharged from the outlet 14. When the bottom blower is started after being stopped, the distance between the converter 19 and the wedge-shaped top support plate 901 decreases. The coke on the converter 19 first contacts the thinner end of the wedge-shaped top support plate 901 after the converter 19 rotates. As the converter 19 rotates, the distance between the coke and the wedge-shaped top support plate 901 decreases, thereby pushing the wedge-shaped top support plate 901 to move upward, so that the smoke hood plate body 2 moves upward, avoiding the smoke hood plate body 2 from being scratched and bent by the coke.

[0032] Further, see Figure 2 , 4 5. A first inclined surface 15 is provided on the inner wall of the smoke hood opening 3, and a second inclined surface 16 is provided on the outer edge of the smoke hood plate body 2. The first inclined surface 15 and the second inclined surface 16 are fitted together to reduce the friction between the smoke hood plate body 2 and the smoke hood opening 3.

[0033] Preferably, the outer edge of the smoke hood plate body 2 facing the smoke hood opening 3 has a smaller dimension than the dimension of the original smoke hood opening 3, thereby forming a second inclined surface 16.

[0034] In the above configuration, the first inclined surface 15 and the second inclined surface 16 are in contact. During the process of the wedge-shaped top support plate 901 moving upward and driving the smoke hood plate body 2 to move upward, the second inclined surface 16 moves along the first inclined surface 15, thereby reducing friction and facilitating the upward movement of the smoke hood plate body 2.

[0035] Further, see Figure 1 The sealing element 8 includes thermal insulation cotton; the end face of the smoke hood plate body 2 facing the smoke hood opening 3 is provided with a refractory mud adhesion layer 17, and the inner side is filled with a refractory layer 18.

[0036] Preferably, the refractory mortar attachment layer 17 uses refractory mortar attachment nails, and the refractory layer 18 uses refractory mortar castable; this reduces high-temperature corrosion and water leakage at the working surface.

[0037] Preferably, three sets of lifting lugs 6 are arranged at intervals to prevent the high temperature of the fume hood panel 2 from corroding the lifting lugs 6 and causing them to fall off.

[0038] Further, see Figure 3The lifting component 11 includes a lifting hoist, which is connected to the lifting steel rope 12.

[0039] Preferably, the hoist is an electric hoist.

[0040] In the above setup, the smoke hood plate body 2 is lifted or lowered by an electric hoist, thereby installing the smoke hood plate body 2 on the smoke hood opening 3, and filling the space between the smoke hood plate body 2 and the smoke hood opening 3 with thermal insulation cotton and refractory mortar castable.

[0041] In this embodiment, an electric hoist is installed on the support shaft 10, the steel rope is connected to the hoist, and the hoist is connected to the lifting lug 6. The hoist is used to open and close the smoke hood body 2. When cleaning the coking at the furnace mouth during the night shift, the smoke hood body 2 is pulled up. During normal production, the smoke hood body 2 is closed to complete the flue gas sealing.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water-cooled bottom-blown furnace inlet sealing fume hood, comprising a water-cooled fume hood (1), wherein the water-cooled fume hood (1) is provided with a fume hood opening (3) and a fume outlet pipe (4) is provided on the water-cooled fume hood (1); characterized in that, Also includes: A trapezoidal smoke hood (5) is provided on the smoke outlet pipe (4); A hood plate body (2) is installed on the hood opening (3); the hood plate body (2) is provided with a lifting lug (6), the hood plate body (2) is provided with a water cooling channel (7), the outer edge of the hood plate body (2) is provided with a sealing element (8), and the inner wall of the hood plate body (2) facing the hood opening (3) is provided with a top support (9); the top support (9) moves upward under the rotation of the bottom blow furnace, thereby driving the hood plate to move upward relative to the hood opening (3); The lifting assembly includes a support shaft (10) set above the bottom blower and a lifting member (11) set on the support shaft (10); a lifting steel rope (12) is provided between the lifting member (11) and the lifting lug (6); the lifting member (11) drives the steel rope to move up or down under the action of external force, thereby causing the smoke hood plate body (2) to separate or cover the smoke hood opening (3).

2. The sealing fume hood for a water-cooled bottom-blown furnace according to claim 1, characterized in that: The fume hood is provided with an inlet (13) and an outlet (14) that are connected to the water cooling channel (7).

3. The sealing fume hood for a water-cooled bottom-blown furnace according to claim 2, characterized in that: The top support (9) includes a wedge-shaped top support plate (901) disposed on the smoke hood plate; the thickness of the wedge-shaped top support plate (901) increases, and the direction of the increase in the thickness of the wedge-shaped top support plate (901) is consistent with the direction of rotation of the bottom blow furnace.

4. The sealing fume hood for a water-cooled bottom-blown furnace according to claim 3, characterized in that: The inner wall of the smoke hood opening (3) is provided with a first inclined surface (15); the outer edge of the smoke hood plate body (2) is provided with a second inclined surface (16); the first inclined surface (15) and the second inclined surface (16) are fitted together to reduce the friction between the smoke hood plate body (2) and the smoke hood opening (3).

5. A water-cooled bottom-blown furnace inlet sealing hood according to claim 4, characterized in that: The sealing element (8) includes thermal insulation cotton; the end face of the smoke hood plate body (2) facing the smoke hood opening (3) is provided with a refractory mud attachment layer (17) and the inner side is filled with a refractory layer (18).

6. A water-cooled bottom-blown furnace inlet sealing hood according to claim 5, characterized in that: The lifting component (11) includes a lifting hoist; the lifting hoist is connected to the lifting steel rope (12).

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