Blast furnace material distribution chute with self-adaptive material distribution function

Abstract

The utility model relates to the field of material distribution chute manufacturing, and particularly discloses a self-adaptive material distribution blast furnace material distribution chute which comprises a feeding chute and a discharging chute, the length directions of the feeding chute and the discharging chute are consistent, the feeding chute and the discharging chute are connected and communicated with each other, and the self-adaptive material distribution blast furnace material distribution chute further comprises an adjusting assembly used for adjusting the size of the outlet end of the discharging chute. The variable chute has the advantages that the chute outlet is variable, and the effect of self-adaptive control over the cloth flow is achieved.

Description

Technical Field

[0001] This application relates to the field of blast furnace charging chute manufacturing, and in particular to an adaptive charging chute for blast furnaces. Background Technology

[0002] The charging chute is one of the charging devices used in blast furnace ironmaking. It is located at the top of the blast furnace cavity. During blast furnace ironmaking, the furnace charge for ironmaking is continuously fed from the charging chute into various positions of the furnace throat according to the process requirements for smelting.

[0003] In the blast furnace ironmaking process, the normal delivery of furnace charge is crucial for the continuous and stable operation of the blast furnace. During the high-intensity production stage of the blast furnace, the furnace charge supply rate accelerates, and a large amount of furnace charge accumulates in the chute in a short period of time. Due to the mutual compression between furnace charges and the friction with the edge of the chute outlet, the furnace charge may form an arched structure at the outlet, which will hinder the normal flow of furnace charge and easily lead to the accumulation and blockage of furnace charge at the chute outlet.

[0004] Furthermore, the fixed chute outlet in existing technology cannot dynamically adjust the charging flow rate according to the amount of furnace charge and the actual operating conditions of the blast furnace. The demand for and distribution of furnace charge vary at different smelting stages. If the charging flow rate cannot be accurately controlled, it will lead to uneven distribution of the furnace charge.

[0005] In conclusion, developing a charging chute that can adjust the outlet size in real time according to the condition of the furnace charge is the key to solving the above-mentioned technical problems and improving the overall level of blast furnace ironmaking. Utility Model Content

[0006] To overcome the above problems, this application provides an adaptive blast furnace charging chute.

[0007] The blast furnace charging chute with adaptive charging provided in this application adopts the following technical solution:

[0008] An adaptive charging chute for a blast furnace includes a feed chute and a discharge chute, wherein the feed chute and the discharge chute are aligned in the same length direction and are connected to each other, and further includes an adjustment component for adjusting the size of the outlet end of the discharge chute.

[0009] By adopting the above technical solution, the furnace charge supply speed is accelerated during the high-intensity production stage of the blast furnace, and a large amount of furnace charge accumulates in the charging chute in a short period of time. Under the action of the adjustment component, the outlet end of the discharge chute is enlarged, which can effectively avoid the accumulation and blockage of furnace charge at the outlet, ensure that the furnace charge can be discharged smoothly from the chute, and maintain the normal operation of the blast furnace charging system.

[0010] Furthermore, if the reaction rate in a certain area of ​​the blast furnace accelerates, the supply of charge needs to be increased to maintain reaction balance. When the amount of charge in the chute increases, the outlet end of the discharge chute widens under the action of the regulating components, thereby increasing the charge flow rate. This allows more charge to be supplied to the corresponding area in the blast furnace in a timely manner, achieving adaptive control of the charge flow rate and helping to optimize the charge distribution and reaction process in the blast furnace.

[0011] Optionally, the adjusting assembly includes two opposing adjusting plates located on the bottom wall of the discharge trough. An elastic element is provided on the side of the adjusting plate away from the other adjusting plate. The elastic element is fixedly connected to the side wall of the discharge trough adjacent to it, and a channel for the furnace charge to pass through is formed between the two adjusting plates.

[0012] By adopting the above technical solution, when the furnace charge in the chute increases, the furnace charge squeezes the regulating plate, the elastic element is compressed, the regulating plate moves towards the chute wall, and the outlet end of the discharge chute increases, effectively avoiding the accumulation and blockage of furnace charge at the outlet. The structure is simple and practical.

[0013] Optionally, a baffle is provided on the side wall of the discharge trough, one side of the baffle is fixed to the side wall of the discharge trough, and the other side of the baffle is connected to the side of the adjusting plate away from the outlet of the discharge trough.

[0014] It also includes a connector for connecting the baffle and the adjusting plate.

[0015] By adopting the above technical solution, the combination of the baffle and the adjusting plate forms a protective space for the elastic element, which minimizes the damage to the elastic element caused by the squeezing and friction of the furnace charge at the outlet, and extends the service life of the elastic element.

[0016] Optionally, a cover plate is installed on the top surface of the discharge end of the discharge trough, and the cover plate is in contact with the top surface of the adjusting plate.

[0017] By adopting the above technical solution, the cover plate provides further protection for the elastic element, preventing the furnace charge from entering the location of the elastic element from above.

[0018] Optionally, the connecting member is a rotating shaft, and the rotation axis of the rotating shaft is parallel to the height direction of the discharge trough.

[0019] By adopting the above technical solution, when the amount of furnace charge in the chute increases, the rotating shaft rotates and drives the adjusting plate to rotate. The two adjusting plates expand outward in an "eight" shape from the inside to the outside, increasing the outlet of the discharge chute and increasing the flow rate of the furnace charge.

[0020] Optionally, the baffle is fixed at the pivot with a sealing plate for covering the gap between the baffle and the adjusting plate.

[0021] By adopting the above technical solution, the sealing plate covers the gap between the baffle and the adjusting plate, preventing the furnace charge from getting stuck in the gap and affecting the rotation of the shaft.

[0022] Optionally, the connector is an elastic rubber strip.

[0023] By adopting the above technical solution, when the furnace charge in the chute increases, the regulating plate is squeezed. At this time, the elastic rubber strip undergoes elastic deformation, causing the regulating plate to expand outward in an "eight" shape from the inside, increasing the outlet of the discharge chute and increasing the flow rate of the furnace charge.

[0024] Optionally, the adjusting plate is a wedge-shaped plate, and the width of the adjusting plate gradually increases along the conveying direction of the furnace charge.

[0025] By adopting the above technical solution, the adjusting plate is selected as a wedge plate, that is, the channel formed between the two adjusting plates in the initial state is set with a narrow opening. The narrow opening of the two adjusting plates reduces the dispersion of the furnace charge at the outlet end of the discharge chute and improves the accuracy of material distribution.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. During the high-intensity production stage of the blast furnace, the furnace charge supply speed is accelerated, and a large amount of furnace charge accumulates in the charging chute in a short period of time. Under the action of the adjustment components, the outlet end of the discharge chute is enlarged, which can effectively avoid the accumulation and blockage of furnace charge at the outlet, ensure that the furnace charge can be discharged smoothly from the chute, and maintain the normal operation of the blast furnace charging system.

[0028] Furthermore, if the reaction rate in a certain area of ​​the blast furnace accelerates, the supply of charge needs to be increased to maintain reaction balance. When the amount of charge in the chute increases, the outlet end of the discharge chute widens under the action of the regulating components, thereby increasing the charge flow rate. This allows more charge to be supplied to the corresponding area in the blast furnace in a timely manner, achieving adaptive control of the charge flow rate and helping to optimize the charge distribution and reaction process in the blast furnace.

[0029] 2. The combination of the baffle and the adjusting plate forms a protective space for the elastic element, which minimizes the damage to the elastic element caused by the compression and friction of the furnace charge at the outlet, and extends the service life of the elastic element.

[0030] 3. The cover plate provides further protection for the elastic element, preventing the furnace charge from entering the location of the elastic element from above. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0032] Figure 2 This is a schematic diagram of the first structure of the connector in the embodiments of this application.

[0033] Figure 3 This is a schematic diagram of the first structure of the connector in the embodiments of this application.

[0034] Reference numerals in the attached drawings: 1. Feed chute; 2. Discharge chute; 3. Adjustment component; 31. Elastic element; 32. Adjustment plate; 4. Baffle; 5. Cover plate; 6. Connector; 61. Rotating shaft; 62. Elastic rubber strip; 7. Sealing plate. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0036] This application discloses an adaptive blast furnace charging chute.

[0037] Reference Figure 1 An adaptive charging chute for a blast furnace includes a feed chute 1 and a discharge chute 2. The feed chute 1 and the discharge chute 2 are aligned along their lengths and interconnected. In this embodiment, the feed chute 1 has a semi-circular cross-section, and the discharge chute 2 has a rectangular cross-section. Both the feed chute 1 and the discharge chute 2 are composed of an outer shell and a liner, which is prior art and will not be described further in this application; they are collectively referred to as the feed chute 1 and the discharge chute 2.

[0038] Reference Figure 1 and Figure 2 The discharge chute 2 is equipped with an adjustment assembly 3 for adjusting the size of the outlet end of the discharge chute 2. Specifically, the adjustment assembly 3 includes two opposing adjustment plates 32 located on the bottom wall of the discharge chute 2. An elastic element 31 is provided on the side of the adjustment plate 32 away from the other adjustment plate 32. In this embodiment, the elastic element 31 is a spring, with one end fixed to the surface of the adjustment plate 32 and the other end fixed to the inner wall of the discharge chute 2. Under the action of the elastic element 31, a channel is formed between the two adjustment plates 32, which can adaptively adjust the amount of furnace charge discharged.

[0039] It should also be noted that the adjusting plate 32 is a wedge-shaped plate, and the width of the adjusting plate 32 gradually increases along the conveying direction of the furnace charge. That is, in the initial state, the channel formed between the two adjusting plates 32 is narrowed. The narrowing of the two adjusting plates 32 reduces the dispersion of the furnace charge at the outlet end of the discharge chute 2 and improves the accuracy of the charge distribution.

[0040] During the high-intensity production stage of the blast furnace, the furnace charge supply speed is accelerated, and a large amount of furnace charge accumulates in the charging chute in a short period of time. With the cooperation of the spring and the adjusting plate 32, the outlet end of the discharge chute 2 is enlarged, which can effectively prevent the furnace charge from accumulating and blocking at the outlet, ensuring that the furnace charge can be smoothly discharged from the chute and maintaining the normal operation of the blast furnace charging system.

[0041] Furthermore, if the reaction rate in a certain area of ​​the blast furnace accelerates, it is necessary to increase the supply of furnace charge to maintain reaction balance. When the amount of furnace charge in the chute increases, the outlet end of the discharge chute 2 increases under the combined action of the spring and the adjusting plate 32, thereby increasing the flow rate of furnace charge. This allows more furnace charge to be supplied to the corresponding area in the blast furnace in a timely manner, realizing adaptive control of the charging flow rate and helping to optimize the distribution of furnace charge and the reaction process in the blast furnace.

[0042] Reference Figure 1 Furthermore, a baffle 4 is provided on the side wall of the discharge trough 2. The baffle 4 is inclined, with one side fixed to the side wall of the discharge trough 2, and the other side connected to the side of the corresponding adjusting plate 32 away from the discharge end of the discharge trough 2. That is, a connecting member 6 is provided between the baffle 4 and the adjusting plate 32 to connect the two. This application provides two options for the connecting member 6:

[0043] 1. Reference Figure 2 The connecting part 6 is a rotating shaft 61, and the rotation axis of the rotating shaft 61 is consistent with the height direction of the discharge chute 2. In addition, a sealing plate 7 is fixed at the mounting position of the baffle 4 and the rotating shaft 61. The sealing plate 7 is in contact with the adjusting plate 32. The sealing plate 7 is used to block the gap between the baffle 4 and the adjusting plate 32 to prevent the furnace charge from getting stuck in the gap and affecting the rotation of the rotating shaft 61.

[0044] When the amount of furnace charge in the chute increases, the rotating shaft 61 rotates and drives the adjusting plate 32 to rotate. The two adjusting plates 32 expand outward in an "eight" shape from the inside to the outside, increasing the outlet of the discharge chute 2 and increasing the flow rate of the furnace charge.

[0045] II: Reference Figure 3 The connector 6 is an elastic rubber strip 62. One side of the elastic rubber strip 62 is fixedly connected to the baffle 4, and the other side of the elastic rubber strip 62 is fixedly connected to the adjusting plate 32.

[0046] When the amount of furnace charge in the chute increases, the regulating plate 32 is compressed. At this time, the elastic rubber strip 62 undergoes elastic deformation, causing the regulating plate 32 to expand outward in an "eight" shape from the inside, increasing the outlet of the discharge chute 2 and increasing the flow rate of the furnace charge.

[0047] In other feasible embodiments, a reinforcing rod may be installed between the inner wall of the discharge trough 2 and the baffle 4 to improve the stability of the baffle 4.

[0048] Reference Figure 1 In addition, a cover plate 5 is fixedly installed on the top surface of the discharge chute 2 at the discharge end. The cover plate 5 is attached to the top surface of the adjusting plate 32. Thus, the baffle 4, the cover plate 5 and the adjusting plate 32 form a space to protect the elastic element 31, avoiding the compression and friction of the furnace charge at the outlet from damaging the elastic element 31 and extending the service life of the elastic element 31.

[0049] The implementation principle of an adaptive charging chute for blast furnaces according to an embodiment of this application is as follows: During the high-intensity production stage of the blast furnace, the charging speed is accelerated, and a large amount of charging material accumulates in the charging chute in a short period of time. Under the action of the adjusting component 3, the outlet end of the discharge chute 2 is enlarged, which can effectively avoid the accumulation and blockage of charging material at the outlet, ensure that the charging material can be smoothly discharged from the chute, and maintain the normal operation of the blast furnace charging system.

[0050] Furthermore, if the reaction rate in a certain area of ​​the blast furnace accelerates, it is necessary to increase the supply of furnace charge to maintain reaction balance. When the amount of furnace charge in the chute increases, the outlet end of the discharge chute 2 increases under the action of the regulating component 3, thereby increasing the flow rate of furnace charge. This allows more furnace charge to be supplied to the corresponding area in the blast furnace in a timely manner, realizing adaptive control of the charging flow rate and helping to optimize the distribution of furnace charge and the reaction process in the blast furnace.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A blast furnace charging chute with adaptive charging capability, characterized in that: It includes a feed trough (1) and a discharge trough (2), wherein the feed trough (1) and the discharge trough (2) are aligned in the same length direction and are connected to each other, and also includes an adjustment component (3) for adjusting the size of the outlet end of the discharge trough (2); The adjustment assembly (3) includes two opposing adjustment plates (32) located on the bottom wall of the discharge trough (2). An elastic element (31) is provided on the side of the adjustment plate (32) away from the other adjustment plate (32). The elastic element (31) is fixedly connected to the side wall of the discharge trough (2) adjacent to it, and a channel for furnace charge to pass through is formed between the two adjustment plates (32).

2. The adaptive charging chute for a blast furnace according to claim 1, characterized in that: A baffle (4) is provided on the side wall of the discharge trough (2). One side of the baffle (4) is fixed to the side wall of the discharge trough (2), and the other side of the baffle (4) is connected to the side of the adjusting plate (32) away from the outlet of the discharge trough (2). It also includes a connector (6) for connecting the baffle (4) and the adjusting plate (32).

3. The adaptive charging chute for a blast furnace according to claim 2, characterized in that: A cover plate (5) is installed on the top surface of the discharge end of the discharge trough (2), and the cover plate (5) is in contact with the top surface of the adjusting plate (32).

4. The adaptive charging chute for a blast furnace according to claim 2, characterized in that: The connector (6) is a rotating shaft (61), and the axis of rotation of the rotating shaft (61) is parallel to the height direction of the discharge trough (2).

5. The adaptive charging chute for a blast furnace according to claim 4, characterized in that: The baffle (4) is fixed at the pivot (61) with a sealing plate (7) for covering the gap between the baffle (4) and the adjusting plate (32).

6. The adaptive charging chute for a blast furnace according to claim 2, characterized in that: The connector (6) is an elastic rubber strip (62).

7. The adaptive charging chute for a blast furnace according to claim 1, characterized in that: The adjusting plate (32) is a wedge-shaped plate, and the width of the adjusting plate (32) gradually increases along the conveying direction of the furnace charge.

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