Furnace mouth flue gas collecting system suitable for rotary metallurgical furnace

Abstract

The utility model belongs to the technical field of metallurgy, and provides a furnace mouth smoke collecting system suitable for a rotary metallurgical furnace, which comprises a smoke box, a rotary joint is communicated with the side surface of the smoke box, one end of the rotary joint far away from the smoke box is communicated with a transition air bellow, and the transition air bellow is communicated with a fan-shaped air bellow through a plurality of groups of penetrating pipes. And the fan-shaped air bellow is communicated with an end air bellow connected with the converter. The technical problems that in the prior art, due to the fact that smoke dust is knocked to fall off, the smoke dust is difficult to fall off, and the smoke dust cleaning effect is reduced are solved. Compared with the prior art, the utility model has the beneficial effects that a large amount of smoke dust attached to the steel wire meshes and the inner wall of the smoke box falls off under the action of vibration, and meanwhile, relative sliding and friction are generated between the steel wire meshes and between the steel wire meshes and the inner wall of the smoke box under the action of vibration, so that the attached smoke dust can be swept off mutually; furthermore, the smoke dust attached to the steel wire mesh and the inner wall of the smoke box falls off, and the cleaning effect of the smoke dust in the smoke box is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgy, and in particular relates to a furnace mouth fume collection system suitable for a rotary metallurgical furnace. Background Art

[0002] Furnace steelmaking is a process in which scrap steel, pig iron, iron ore, and limestone slag-making agents are mixed and placed into a furnace, where they are heated by preheated high-temperature coal gas. The carbon in the pig iron is oxidized by the iron oxide in the iron ore, achieving the purpose of decarbonization and steelmaking.

[0003] During the steelmaking process, flue gas is continuously generated and overflows out of the furnace, affecting the working environment of the smelting workshop. Therefore, it is necessary to collect it through a flue gas collection device. The applicant has retrieved some existing technologies, such as the Chinese patent with patent publication number CN103471382B. When in use, the smoke adheres to the flue wall panel. When removing the smoke, the flue wall panel is only knocked by a vibrator. The smoke falls under the action of vibration. However, when the flue wall panel is knocked, its vibration amplitude is small due to its hard texture, and the impact force on the smoke attached thereto is small, which makes it difficult for the smoke to fall off, reduces the smoke cleaning effect, and the residual smoke is not conducive to subsequent use. Utility Model Content

[0004] The purpose of the utility model is to provide a furnace mouth flue gas collection system suitable for a rotary metallurgical furnace, aiming to solve the technical problem in the prior art that the smoke is difficult to fall off by knocking the smoke off, thereby reducing the smoke cleaning effect.

[0005] The utility model is implemented as follows: a furnace mouth flue gas collection system suitable for a rotary metallurgical furnace includes a smoke box, a side of the smoke box is connected to a rotary joint, the end of the rotary joint away from the smoke box is connected to a transition wind box, the transition wind box is connected to the fan-shaped wind box through multiple groups of through-tubes, the fan-shaped wind box is connected to an end wind box connected to the converter, multiple groups of steel wire mesh are arranged in the smoke box, the multiple groups of steel wire mesh are distributed in a sleeve and slidably connected to each other, one group of the steel wire mesh is distributed along the inner wall of the smoke box, a fixing component for fixing the multiple groups of steel wire mesh is provided in the smoke box, and multiple groups of vibration motors for driving the steel wire mesh to vibrate are fixedly installed on the outer wall of the smoke box.

[0006] Further technical solution: an end bellows support is fixedly mounted on the end bellows, and the end bellows is fixedly connected to the converter via the end bellows support.

[0007] Further technical solution: A temperature sensor and a smoke sensor for detecting smoke temperature and smoke composition are fixedly installed at the bottom of the smoke box.

[0008] Further technical solution: The fixing assembly includes a first pressure plate, and fixing screws are provided at both ends of the first pressure plate. The fixing screws pass through multiple groups of steel meshes and are threadedly connected to the bottom side wall of the cigarette box. Multiple groups of through holes are provided on the steel mesh for the fixing screws to pass through. The first pressure plate is provided with multiple groups and is distributed at the bottom of the cigarette box.

[0009] Further technical solution: The fixing assembly also includes a second pressing plate and a third pressing plate. The second pressing plate and the third pressing plate are installed in the same way as the first pressing plate. The second pressing plate and the third pressing plate are distributed on adjacent side walls of the cigarette box and are located at the opening of the cigarette box.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] 1. Under the action of vibration, a large amount of smoke and dust attached to the wire mesh and the inner wall of the smoke box will fall off. At the same time, under the action of vibration, the wire meshes and the inner wall of the smoke box will slide relative to each other and produce friction, which can then sweep the attached smoke and dust off from each other, further making the smoke and dust attached to the wire mesh and the inner wall of the smoke box fall off, improving the cleaning effect of the smoke and dust in the smoke box, reducing the smoke and dust residue in the smoke box, and facilitating subsequent use.

[0012] 2. The multi-layer steel wire mesh has a larger surface area, which increases the probability of contact with smoke and dust and the area for smoke and dust to adhere. As a result, a large amount of smoke and dust adheres to the steel wire mesh, and a small amount of smoke and dust adheres to the inner wall of the smoke box, thereby removing a large amount of smoke and dust in the smoke and improving the smoke removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 It is a structural diagram of the steel wire mesh in this utility model.

[0015] Figure 3 It is a schematic diagram of the structure inside the wire mesh in this utility model.

[0016] Figure 4 This is the front view of the cigarette box in the utility model.

[0017] Figure 5 for Figure 4 A magnified schematic diagram of the A1 region in the middle.

[0018] In the accompanying drawings: 1. Smoke box; 2. Rotary joint; 3. Transition bellows; 4. Through-tube; 5. Fan-shaped bellows; 6. End bellows; 7. End bellows support; 8. First pressure plate; 9. Fixing screw; 10. Through hole; 11. Second pressure plate; 12. Third pressure plate; 13. Vibration motor; 14. Temperature sensor; 15. Smoke sensor; 16. Wire mesh; 17. Fixing assembly. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0021] like Figure 1-Figure 5 As shown, a furnace mouth flue gas collection system suitable for a rotary metallurgical furnace provided by the utility model includes a smoke box 1, a rotary joint 2 is connected to the side of the smoke box 1, and the rotary joint 2 is provided with multiple groups to improve the flexibility of the smoke box 1 when in use, and the rotary joint 2 is connected to a transition wind box 3 at one end away from the smoke box 1, and the transition wind box 3 is connected to the fan-shaped wind box 5 through multiple groups of through-tubes 4, and the fan-shaped wind box 5 is connected to an end wind box 6 connected to the converter, and an end wind box support 7 is fixedly installed on the end wind box 6, and the end wind box 6 is fixedly connected to the converter through the end wind box support 7, and multiple groups of steel wire meshes 16 are provided in the smoke box 1, and the multiple groups of steel wire meshes 16 are distributed in a sleeve and slidably connected to each other, wherein one group of steel wire meshes 16 is distributed along the inner wall of the smoke box 1, and a fixing component 17 for fixing the multiple groups of steel wire meshes 16 is provided in the smoke box 1, and multiple groups of vibration motors 13 for driving the steel wire meshes 16 to vibrate are fixedly installed on the outer wall of the smoke box 1.

[0022] When this embodiment is actually used, the end bellows 6 is fixedly connected to the converter through the end bellows support 7, the transition bellows 3 is installed through the anode furnace bellows support, and multiple groups of steel meshes 16 are installed in the smoke box 1 and fixed through the fixing assembly 17. After the fixing is completed, the innermost steel mesh 16 contacts the inner wall of the smoke box 1 and can slide, and the steel meshes 16 contact each other and can slide. When in use, the smoke box 1 is adjusted to move to the smoke outlet of the converter. After the smoke enters the smoke box 1, it enters the transition bellows 3 along the rotary joint 2, and then enters the fan-shaped bellows 5 and the end bellows 6 through the through-tube 4. The smoke in the end bellows 6 can be collected and processed subsequently. The smoke carried in the smoke will adhere to the steel mesh 16 when passing through the multi-layer steel mesh 16. Since the multi-layer steel mesh 16 has a large surface area, the probability of contact with the smoke and the area available for smoke adhesion are increased, so that a large amount of smoke adheres to the steel mesh 16, and a small amount of smoke adheres to the smoke box 1. The vibration motor 13 is turned on and the vibration motor 13 makes the smoke box 1 vibrate as a whole. The vibration will be transmitted to the wire mesh 16. Since the wire mesh 16 is relatively soft, the wire mesh 16 will vibrate with a large amplitude. Under the action of the vibration, the wire meshes 16 and the inner wall of the smoke box 1 will slide relative to each other. Under the action of the vibration, a large amount of smoke dust attached to the wire mesh 16 and the inner wall of the smoke box 1 will fall into the collection component placed in advance. At the same time, the relative sliding between the wire meshes 16 and the inner wall of the smoke box 1 will generate friction, which can sweep away the attached smoke dust, further making the smoke dust attached to the wire mesh 16 and the inner wall of the smoke box 1 fall off, improving the cleaning effect of the smoke dust in the smoke box 1, reducing the smoke dust residue in the smoke box 1, and facilitating subsequent use.

[0023] like Figure 4 As shown, the present invention provides a furnace mouth flue gas collection system suitable for a rotary metallurgical furnace. A temperature sensor 14 and a flue gas sensor 15 for detecting flue gas temperature and flue gas components are fixedly installed at the bottom of the smoke box 1.

[0024] In actual application of this embodiment, after the flue gas enters the smoke box 1, the temperature of the flue gas is detected by the temperature sensor 14, so that the temperature in the converter is reversely calculated based on the temperature of the flue gas, which can increase the understanding of the temperature of the converter during operation. At the same time, the composition of the flue gas is detected by the flue gas sensor 15, and the smelting conditions in the converter are reflected by the composition of the flue gas, which is beneficial for use.

[0025] like Figure 3-Figure 5As shown, a furnace mouth flue gas collection system suitable for a rotary metallurgical furnace provided by the utility model, the fixing component 17 includes a first pressure plate 8, and fixing screws 9 are provided at both ends of the first pressure plate 8. The fixing screws 9 pass through multiple groups of wire meshes 16 and the fixing screws 9 are threadedly connected to the bottom side wall of the smoke box 1. The wire mesh 16 is provided with multiple groups of through holes 10 for the fixing screws 9 to pass through. The first pressure plate 8 is provided with multiple groups and is distributed at the bottom of the smoke box 1.

[0026] Specifically, in order to fix the lower part of the wire mesh 16, the fixing assembly 17 also includes a second pressing plate 11 and a third pressing plate 12. The second pressing plate 11 and the third pressing plate 12 are installed in the same manner as the first pressing plate 8. The second pressing plate 11 and the third pressing plate 12 are distributed on the adjacent side walls of the cigarette box 1 and are located at the opening of the cigarette box 1.

[0027] In actual application of this embodiment, after multiple groups of steel meshes 16 are installed in the cigarette box 1, a group of first pressing plates 8 are picked up, and two groups of fixing screws 9 are respectively passed through the first pressing plates 8 and the steel meshes 16. Then, the first pressing plates 8 are installed in the cigarette box 1 through the fixing screws 9, and the steel meshes 16 are fixed in the cigarette box 1 through the first pressing plates 8. The above steps are repeated to install multiple groups of first pressing plates 8, second pressing plates 11 and third pressing plates 12 in the cigarette box 1 and fix the steel meshes 16. When fixing, the innermost steel meshes 16 are in contact with the inner wall of the cigarette box 1 and can slide, and the steel meshes 16 are in contact with each other and can slide, so that during subsequent vibration, a small range of relative sliding and vibration can occur between the steel meshes 16 and between the steel meshes 16 and the inner wall of the cigarette box 1.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0029] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A furnace mouth flue gas collection system suitable for a rotary metallurgical furnace, comprising a smoke box (1), characterized in that: The smoke box (1) is connected to a rotary joint (2) on the side, and the end of the rotary joint (2) away from the smoke box (1) is connected to a transition wind box (3), and the transition wind box (3) is connected to a fan-shaped wind box (5) through multiple groups of through-tubes (4), and the fan-shaped wind box (5) is connected to an end wind box (6) connected to the converter. Multiple groups of steel meshes (16) are arranged in the smoke box (1), and the multiple groups of steel meshes (16) are arranged and slidably connected to each other, and one group of the steel meshes (16) is distributed along the inner wall of the smoke box (1). A fixing component (17) for fixing the multiple groups of steel meshes (16) is provided in the smoke box (1), and multiple groups of vibration motors (13) for driving the steel meshes (16) to vibrate are fixedly installed on the outer wall of the smoke box (1).

2. A furnace mouth fume collection system suitable for a rotary metallurgical furnace according to claim 1, characterized in that: An end bellows support (7) is fixedly mounted on the end bellows (6), and the end bellows (6) is fixedly connected to the converter via the end bellows support (7).

3. The furnace mouth fume collection system for a rotary metallurgical furnace according to claim 1, characterized in that: A temperature sensor (14) and a smoke sensor (15) for detecting smoke temperature and smoke composition are fixedly mounted on the bottom of the smoke box (1).

4. The furnace mouth fume collection system for a rotary metallurgical furnace according to claim 1, characterized in that: The fixing assembly (17) includes a first pressing plate (8), both ends of which are provided with fixing screws (9), the fixing screws (9) passing through multiple groups of steel meshes (16) and the fixing screws (9) are threadedly connected to the bottom side wall of the cigarette box (1), the steel meshes (16) are provided with multiple groups of through holes (10) for the fixing screws (9) to pass through, and the first pressing plate (8) is provided with multiple groups and all are distributed at the bottom of the cigarette box (1).

5. The furnace mouth fume collection system for a rotary metallurgical furnace according to claim 4, characterized in that: The fixing assembly (17) further includes a second pressing plate (11) and a third pressing plate (12). The second pressing plate (11) and the third pressing plate (12) are installed in the same manner as the first pressing plate (8). The second pressing plate (11) and the third pressing plate (12) are distributed on adjacent side walls of the cigarette box (1) and are located at the opening of the cigarette box (1).

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