Blast furnace coal injection regulation and control assembly

Abstract

The utility model relates to the technical field of blast furnace coal injection, in particular to a blast furnace coal injection regulation and control assembly. According to the technical scheme, the adjusting and controlling box comprises an adjusting and controlling box body, a rotating rod, a discharging valve and a connecting valve, a workbench is fixed to the lower surface of the adjusting and controlling box body, the outer end face of one side of the adjusting and controlling box body communicates with a coal injection pipe, the outer end face of one side of the coal injection pipe communicates with a coal injection cover, and a supporting plate is fixed to the inner wall of the adjusting and controlling box body; a partition plate is fixed to the upper surface of the supporting plate, the regulation and control box body is divided into a storage grid and a fixed grid through the partition plate and the supporting plate, sealing covers are connected to the upper surfaces of the storage grid and the fixed grid through hinges, handles are welded to the upper surfaces of the sealing covers, and a controller is installed on the inner wall of the fixed grid; and a display screen is fixedly embedded in the front surface of the regulation and control box body. According to the utility model, the combustion rate of pulverized coal can be improved, the coal ratio is improved, the coke ratio is reduced, and the effect of replacing coke by the pulverized coal is furthest exerted, so that the purposes of energy conservation and consumption reduction are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace coal injection, in particular to a blast furnace coal injection control component. Background Art

[0002] The blast furnace is made of steel plates as the shell, and the shell is lined with refractory bricks. The blast furnace body is divided into five parts from top to bottom: the throat, the body, the waist, the belly, and the hearth. Due to the advantages of good technical and economic indicators of blast furnace ironmaking, simple process, large production volume, high labor production efficiency, and low energy consumption, the iron produced by this method accounts for the vast majority of the world's total iron production.

[0003] The prior art discloses a blast furnace coal injection gun anti-blocking device of CN207376076U, which mainly solves the technical problems of existing blast furnace coal injection gun blockage, difficulty in clearing the blockage and high clearing cost. The technical solution of the utility model is a blast furnace coal injection gun anti-blocking device, including a three-way connector, a one-way valve for pressure relief, and a first one-way valve. The input end of the three-way connector is connected to the injection branch pipe of the blast furnace coal injection system, the output end of the three-way connector is connected to the input end of the first one-way valve, the output end of the first one-way valve is connected to the blast furnace coal injection gun, the diameter of the first one-way valve is the same as the pipe diameter of the blast furnace coal injection gun, the three-way connector is a one-time variable diameter structure, the one-way valve for pressure relief is connected to one side of the output end of the three-way connector, and the diameter of the one-way valve for pressure relief is the same as the inner diameter of the blast furnace coal injection gun. The utility model has the characteristics of simple structure, easy operation, safety and reliability, and low manufacturing and maintenance costs.

[0004] The problem of fully utilizing pulverized coal in a blast furnace lies in how to allow unburned pulverized coal to participate in the reaction in the furnace. After pulverized coal is injected into the blast furnace, the pulverized coal that is not completely burned in the tuyere whirlpool area enters the furnace in the form of unburned pulverized coal. The amount of unburned pulverized coal in the furnace is closely related to factors such as the amount of coal injected, the particle size of pulverized coal, and the combustion rate. There are two ways to improve the utilization rate of pulverized coal. One is to increase the combustion rate of pulverized coal in the tuyere area, which is mainly controlled by factors such as the oxygen content of the blast, the particle size of pulverized coal, and the composition of pulverized coal; the other is to increase the utilization rate of unburned pulverized coal in the furnace, which is mainly solved by the reasonable distribution of unburned pulverized coal in the furnace. Utility Model Content

[0005] The utility model aims to provide a blast furnace coal injection control component to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blast furnace coal injection control component, comprising a control box body, a rotating rod, a discharge valve and a connecting valve, a workbench is fixed to the lower surface of the control box body, and support legs are welded to the lower surface of the workbench, a support plate is fixed to the inner wall of the control box body, and a partition is fixed to the upper surface of the support plate, the control box body is divided into a storage grid and a fixed grid by the partition and the support plate, and a controller is installed on the inner wall of the fixed grid, and a display screen is embedded and fixed on the front surface of the control box body.

[0007] When using a blast furnace coal injection control component in the present technical solution, hold the handle, drive the handle to open the sealing cover, and add the coal powder raw materials into the storage grid and the fixed grid respectively. The discharge valve and the connecting valve are both designed as metering valves, and the amount of the discharge valve and the connecting valve is set through the display screen. The display screen transmits a signal to the controller, and the controller transmits a signal to the discharge valve and the connecting valve. The discharge valve and the connecting valve are opened, and a certain amount of raw materials enter the bottom end of the control box body through the discharge pipe and the connecting pipe. The proportion of raw materials can be adjusted according to specific actual needs, the combustion rate of coal powder can be improved, the coal ratio can be increased and the coke ratio can be reduced, and the role of coal powder in replacing coke can be maximized, thereby achieving the purpose of energy saving and consumption reduction.

[0008] Preferably, the upper surfaces of the material storage grid and the fixed grid are both hingedly connected with a sealing cover, and a handle is welded on the upper surface of the sealing cover. By arranging the handle on the upper surface of the sealing cover, it is convenient to hold the handle to open or close the sealing cover.

[0009] Preferably, a rotating rod is rotatably connected to the bottom end of the inner part of the regulating box body, and a stirring rod is fixed to the outer surface of the rotating rod. A chassis is fixed to the lower surface of the regulating box body, and a motor is installed inside the chassis, and the rotating shaft of the motor is fixed to the rotating rod. By arranging the rotating rod and the stirring rod at the bottom end of the inner part of the regulating box body, it is convenient to mix the coal powder.

[0010] Preferably, a coal injection pipe is connected to one side of the control box body, and a coal injection valve is threadedly connected to the outer surface of the coal injection pipe, and a coal injection cover is connected to one side of the outer end of the coal injection pipe. Coal injection is facilitated by arranging the coal injection pipe and the coal injection cover on one side of the control box body.

[0011] Preferably, the lower surface of the material storage grid is connected with a discharge pipe, and the outer surface of the discharge pipe is threadedly connected with a discharge valve. By arranging the discharge pipe and the discharge valve on the lower surface of the material storage grid, it is convenient to discharge the material.

[0012] Preferably, the lower surface of the fixed grid is connected with a connecting pipe, and the outer surface of the connecting pipe is threadedly connected with a connecting valve. By arranging the connecting pipe and the connecting valve on the lower surface of the fixed grid, it is convenient to discharge the material.

[0013] Preferably, the signal transmitting end of the display screen is electrically connected to the signal receiving end of the controller, and the signal transmitting end of the controller is electrically connected to the signal receiving ends of the discharge valve and the connecting valve. The electrical connection facilitates the control of the discharge valve and the connecting valve according to the display screen.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model achieves the effect of improving the combustion rate of pulverized coal, increasing the coal ratio and reducing the coke ratio by arranging a storage grid, a fixed grid and a discharge valve, so as to maximize the role of pulverized coal in replacing coke, thereby achieving the effect of energy saving and consumption reduction. The hand drives the handle to open the sealing cover, and the raw materials of pulverized coal are added into the storage grid and the fixed grid respectively. The discharge valve and the connecting valve are both designed as metering valves, and the amount of the discharge valve and the connecting valve is set through the display screen. The display screen transmits a signal to the controller, and the controller transmits a signal to the discharge valve and the connecting valve. The discharge valve and the connecting valve are opened, and a certain amount of raw materials enter the bottom end of the inner body of the control box through the discharge pipe and the connecting pipe. The proportion of raw materials can be adjusted according to specific actual needs, so as to improve the combustion rate of pulverized coal, increase the coal ratio and reduce the coke ratio, and maximize the role of pulverized coal in replacing coke, thereby achieving the purpose of energy saving and consumption reduction.

[0016] 2. The utility model achieves the effect of facilitating coal injection by arranging a rotating rod, a stirring rod and a coal injection hood. The chassis drives the rotating rod to rotate under the action of the power device, and the rotating rod drives the stirring rod to rotate. The stirring rod can mix a variety of raw materials. The coal injection pipe sucks coal powder under the action of the power device, and then sprays the coal powder through the coal injection hood, which is convenient for coal injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0018] Figure 2 It is an enlarged structural schematic diagram of the support plate of the utility model;

[0019] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the electrical structure of the utility model.

[0021] In the figure: 1. Sealing cover; 2. Handle; 3. Partition; 4. Control box body; 5. Controller; 6. Storage grid; 7. Fixed grid; 8. Rotating rod; 9. Stirring rod; 10. Coal injection pipe; 11. Coal injection valve; 12. Coal injection hood; 13. Workbench; 14. Support leg; 15. Chassis; 16. Support plate; 17. Discharge valve; 18. Discharge pipe; 19. Connecting valve; 20. Connecting pipe; 21. Display screen. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] See also Figures 1 to 4 , the utility model provides an embodiment: a blast furnace coal injection control component, including a control box body 4, a rotating rod 8, a discharge valve 17 and a connecting valve 19, the inner wall of the control box body 4 is fixed with a support plate 16, and the upper surface of the support plate 16 is fixed with a partition 3, the control box body 4 is divided into a storage grid 6 and a fixed grid 7 by the partition 3 and the support plate 16, the upper surfaces of the storage grid 6 and the fixed grid 7 are hingedly connected with a sealing cover 1, and a handle 2 is welded on the upper surface of the sealing cover 1, a controller 5 is installed on the inner wall of the fixed grid 7, a display screen 21 is embedded and fixed on the front surface of the control box body 4, the lower surface of the storage grid 6 is connected with a discharge pipe 18, and the outer surface of the discharge pipe 18 is threadedly connected with the discharge valve 17, the lower surface of the fixed grid 7 is connected with a connecting pipe 20, and the outer surface of the connecting pipe 20 is threadedly connected with the connecting valve 19, the signal transmitting end of the display screen 21 is electrically connected to the signal receiving end of the controller 5, and the signal transmitting end of the controller 5 is electrically connected to the signal receiving ends of the discharge valve 17 and the connecting valve 19.

[0025] Of course, as is well known to those skilled in the art, the controller 5, coal injection pipe 10, chassis 15, discharge valve 17, connecting valve 19 and display screen 21 of the utility model also need to be provided with a power device to enable them to work normally, and as is well known to those skilled in the art, the provision of the power is commonplace, and they all belong to conventional means or common knowledge, and will not be elaborated here, and those skilled in the art can make any optional selections according to their needs or convenience.

[0026] A blast furnace coal injection control component based on Example 1, holding the handle 2, the hand drives the handle 2 to open the sealing cover 1, and the coal powder raw materials are added into the storage grid 6 and the fixed grid 7 respectively. The discharge valve 17 and the connecting valve 19 are both designed as metering valves, and the amount of the discharge valve 17 and the connecting valve 19 is set through the display screen 21. The display screen 21 transmits a signal to the controller 5, and the controller 5 transmits a signal to the discharge valve 17 and the connecting valve 19. The discharge valve 17 and the connecting valve 19 are opened, and a certain amount of raw materials enter the bottom end of the control box body 4 through the discharge pipe 18 and the connecting pipe 20. The proportion of raw materials can be adjusted according to specific actual needs, the combustion rate of coal powder can be improved, the coal ratio can be increased and the coke ratio can be reduced, and the role of coal powder in replacing coke can be maximized, thereby achieving the purpose of energy saving and consumption reduction.

[0027] Embodiment 2

[0028] like Figure 1-Figure 4 As shown, a blast furnace coal injection control component proposed by the utility model, compared with the first embodiment, this embodiment also includes a control box body 4, a rotating rod 8, a discharge valve 17 and a connecting valve 19, a workbench 13 is fixed to the lower surface of the control box body 4, and a support leg 14 is welded to the lower surface of the workbench 13, the inner bottom end of the control box body 4 is rotatably connected to the rotating rod 8, and the outer surface of the rotating rod 8 is fixed with a stirring rod 9, a chassis 15 is fixed to the lower surface of the control box body 4, and a motor is installed inside the chassis 15, and the rotating shaft of the motor is fixed to the rotating rod 8, a coal injection pipe 10 is connected to the outer end surface of the control box body 4, and the outer surface of the coal injection pipe 10 is threadedly connected to the coal injection valve 11, and a coal injection hood 12 is connected to the outer end surface of the coal injection pipe 10.

[0029] In this embodiment, the chassis 15 drives the rotating rod 8 to rotate under the action of the power device, and the rotating rod 8 drives the stirring rod 9 to rotate. The stirring rod 9 can mix a variety of raw materials. The coal injection pipe 10 sucks in coal powder under the action of the power device, and then sprays the coal powder through the coal injection hood 12 to facilitate coal injection.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A blast furnace coal injection control assembly, comprising a control box body (4), a rotating rod (8), a discharge valve (17) and a connecting valve (19), characterized in that: A workbench (13) is fixed to the lower surface of the control box body (4), and a support leg (14) is welded to the lower surface of the workbench (13); a support plate (16) is fixed to the inner wall of the control box body (4), and a partition (3) is fixed to the upper surface of the support plate (16); the control box body (4) is divided into a material storage grid (6) and a fixed grid (7) by the partition (3) and the support plate (16), and a controller (5) is installed on the inner wall of the fixed grid (7); and a display screen (21) is embedded and fixed on the front surface of the control box body (4).

2. A blast furnace coal injection control assembly according to claim 1, characterized in that: The upper surfaces of the material storage grid (6) and the fixed grid (7) are both hingedly connected to a sealing cover (1), and a handle (2) is welded to the upper surface of the sealing cover (1).

3. A blast furnace coal injection control assembly according to claim 1, characterized in that: The bottom end of the inner part of the control box body (4) is rotatably connected to a rotating rod (8), and a stirring rod (9) is fixed to the outer surface of the rotating rod (8). A machine box (15) is fixed to the lower surface of the control box body (4), and a motor is installed inside the machine box (15), and the rotating shaft of the motor is fixed to the rotating rod (8).

4. A blast furnace coal injection control assembly according to claim 1, characterized in that: One side outer end surface of the control box body (4) is connected to a coal injection pipe (10), and the outer surface of the coal injection pipe (10) is threadedly connected to a coal injection valve (11), and one side outer end surface of the coal injection pipe (10) is connected to a coal injection cover (12).

5. A blast furnace coal injection control assembly according to claim 1, characterized in that: The lower surface of the material storage grid (6) is connected to a discharge pipe (18), and the outer surface of the discharge pipe (18) is threadedly connected to a discharge valve (17).

6. A blast furnace coal injection control assembly according to claim 1, characterized in that: The lower surface of the fixed grid (7) is connected to a connecting pipe (20), and the outer surface of the connecting pipe (20) is threadedly connected to a connecting valve (19).

7. A blast furnace coal injection control assembly according to claim 1, characterized in that: The signal transmitting end of the display screen (21) is electrically connected to the signal receiving end of the controller (5), and the signal transmitting end of the controller (5) is electrically connected to the signal receiving ends of the discharge valve (17) and the connection valve (19).

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