Powder feeding device for fire door of steelmaking converter

Abstract

The utility model relates to the technical field of steel smelting, in particular to a powder feeding device for a fire door of a steelmaking converter, which comprises a fire door receiving bin which penetrates through the fire door and is welded on the fire door, a feed port of the fire door receiving bin is positioned outside the fire door, and a discharge port of the fire door receiving bin is positioned in the fire door. A discharging gate valve is arranged in a discharging port of the fire-blocking door receiving bin, a rotary material pipe is arranged at the lower end of the discharging port of the fire-blocking door receiving bin, and a feeding device is arranged at the lower end of the rotary material pipe. A power mounting table is welded and fixed to the outer wall of the fireproof door, and a power system is arranged on the power mounting table. The powder feeding device is simple in structure and low in manufacturing cost, an old steelmaking production line can be automatically transformed conveniently, different powder can be selectively added into a steel ladle or a converter conveniently and rapidly according to needs, potential safety hazards of work are eliminated, and work efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel smelting, in particular to a powder material adding device for a fire-blocking door of a steelmaking converter. Background Art

[0002] The iron and steel metallurgical process will produce a variety of powders in considerable quantities. The general practice of the industry is to reuse these powders in the iron and steel metallurgical process based on the compatibility of the powders' characteristics with the process of a certain link in the metallurgy. Some companies also use them to produce other materials for users other than metallurgy. The physical properties of the powders are suitable for steelmaking converters. The powders include coking dust, low-S ash in steelmaking dust (except desulfurization and refining ash), flux dust, screening flux raw / clinker powder, etc.

[0003] In the process of converter steelmaking, powder is generally added to the converter in the fire door manually. Due to the relatively high temperature of the converter mouth, the work efficiency is low, the working environment is poor, and there are certain safety hazards. In addition, some steel mills have old production lines, limited converter silos, and no direct silos for feeding the ladle. In this way, the silos can only be used for the most needed bulk materials such as lime, fluorite (or iron oxide balls), light-burned dolomite, dolomite, and final slag modifiers. The cost of adding powder from the high silo to the ladle is high, and there may not be space conditions on site for implementation. Even if there is a direct silo, there is a significant dust problem, which affects the environment and worsens the working conditions of workers. Utility Model Content

[0004] In view of the above problems, the utility model provides a powder material adding device for a fire-blocking door of a steelmaking converter, comprising: a fire-blocking door receiving bin that penetrates the fire-blocking door and is welded on the fire-blocking door, the feeding port of the fire-blocking door receiving bin is located outside the fire-blocking door, the discharging port of the fire-blocking door receiving bin is located inside the fire-blocking door, a material discharge plug valve is arranged in the discharging port of the fire-blocking door receiving bin, a rotating material pipe is arranged at the lower end of the discharging port of the fire-blocking door receiving bin, and a furnace-under-charging device is arranged at the lower end of the rotating material pipe;

[0005] The outer wall of the fire-blocking door is welded with a fixed power installation platform, and the power installation platform is provided with a power system;

[0006] The rotating material pipe is provided with a rotating material pipe body facing the discharge port of the material receiving bin of the fire-blocking door, and one end of the rotating material pipe body close to the discharge port of the material receiving bin of the fire-blocking door is provided with a notch matching the discharge port of the material receiving bin of the fire-blocking door, and both sides of the notch are rotatably fixed on the shaft seat through a pin shaft, and the shaft seat is fixed on the inner wall of the fire-blocking door, and one of the pin shafts is provided with a sprocket coaxial with the pin shaft;

[0007] The sprocket is connected to the power system chain drive through a through hole;

[0008] Furthermore, the unloading plug valve is provided with a cylinder fixing frame fixed to the outside of the fire-blocking door, the end of the cylinder fixing frame away from the fire-blocking door is connected and fixed to the base of the cylinder through a cylinder fixing pin, the output shaft of the cylinder is fixedly connected to the plug plate, the plug plate is located inside the plug plate frame, and the two can slide relative to each other, and the plug plate frame is connected to the discharge port of the receiving bin;

[0009] Furthermore, the under-furnace charging device includes a receiving port directly opposite to the discharge port of the rotating material pipe body, and the receiving port is connected to the smoke hood through a slide pipe;

[0010] Furthermore, a bin cover is provided on the fire-blocking door receiving bin.

[0011] The beneficial effects of the utility model are:

[0012] The utility model has a simple structure and low construction cost, is convenient for automation transformation of old steelmaking production lines, and can conveniently and quickly add different powders selectively into the ladle or converter as needed, eliminating work safety hazards and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of the overall structure of the utility model;

[0014] Figure 2 It is a side view of the overall structure of the utility model;

[0015] Figure 3 This is a structural front view of the rotary material tube of the utility model;

[0016] Figure 4 This is a structural side view of the rotary material tube of the utility model;

[0017] Figure 5 This is a structural diagram of the utility model feed plug valve;

[0018] Among them: 1. Bin cover; 2. Fire-blocking door and receiving bin; 3. Power installation platform; 4. Power system; 5. Fire-blocking door; 6. Transmission chain; 7. Rotating material pipe; 71. Rotating material pipe body; 72. Shaft seat; 73. Pin shaft; 74. Sprocket; 8. Unloading gate valve; 81. Gate frame; 82. Cylinder fixing bracket; 83. Gate; 84. Cylinder; 85. Cylinder fixing pin; 9. Feeding device; 91. Receiving port; 92. Chute; 93. Smoke hood. DETAILED DESCRIPTION

[0019] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] like Figure 1-4As shown, a powder material adding device for a steelmaking converter fire-blocking door comprises a fire-blocking door receiving bin 2 which penetrates the fire-blocking door 5 and is welded on the fire-blocking door 5, wherein the feeding port of the fire-blocking door receiving bin 2 is located outside the fire-blocking door 5, and the discharging port of the fire-blocking door receiving bin 2 is located inside the fire-blocking door 5, and a material discharge gate valve 8 is arranged inside the discharging port of the fire-blocking door receiving bin 2, and the opening and closing of the discharging port of the fire-blocking door receiving bin 2 is controlled by the material discharge gate valve 8, and a rotating material pipe 7 is arranged at the lower end of the discharging port of the fire-blocking door receiving bin 2;

[0021] The rotating material pipe 7 is provided with a rotating material pipe body 71 facing the discharge port of the material receiving bin 2 of the fire-blocking door. One end of the rotating material pipe body 71 close to the discharge port of the material receiving bin 2 of the fire-blocking door is provided with a notch matching the discharge port of the material receiving bin 2 of the fire-blocking door. Both sides of the notch are rotatably fixed on the shaft seat 72 through a pin shaft 73. The shaft seat 72 is fixed on the inner wall of the fire-blocking door. One of the pin shafts 73 is provided with a sprocket 74 coaxial therewith.

[0022] Specifically, the sprocket wheel 74 can be driven to drive the rotating material pipe body 71 to rotate around the pin shaft 73 relative to the discharge port of the fire-blocking door receiving bin 2, so that the powder in the fire-blocking door receiving bin 2 can be discharged to different positions through the rotation of the rotating material pipe 7.

[0023] Furthermore, the outer wall of the fire-blocking door 5 is welded and fixed with a power mounting platform 3, and the power mounting platform 3 is provided with a power system 4, and the power system 4 is composed of a motor and a reducer, and a driving sprocket fixed to the output shaft of the reducer. A through hole is provided at a portion of the fire-blocking door 5 corresponding to the driving sprocket, and a transmission chain 6 is provided on the driving sprocket, and the transmission chain 6 is connected to the sprocket 74 in the fire-blocking door 5 through the through hole;

[0024] Specifically, the power system 4 outside the fire-blocking door 5 drives the sprocket 74 to drive the rotating material pipe 7 to rotate.

[0025] Furthermore, the discharge end of the rotating material tube 7 is provided with a feeding device 9 perpendicular thereto, and the feeding device 9 includes a receiving port 91 directly opposite to the discharge port of the rotating material tube body 71 , and the receiving port 91 is connected to the smoke hood 93 through a slide pipe 92 .

[0026] Specifically, when the power system 4 controls the rotating material pipe 7 to rotate to correspond to the feeding device 9, the powder entering from the fire-blocking door receiving bin 2 passes through the rotating material pipe 7 and the feeding device 9 in sequence and enters the ladle below.

[0027] Further, such as Figure 5As shown, the unloading plug valve 8 is provided with a cylinder fixing frame 82 fixed to the outside of the fire-blocking door 5, and one end of the cylinder fixing frame 82 away from the fire-blocking door 5 is connected and fixed to the base of the cylinder 84 through a cylinder fixing pin 85, and the output shaft of the cylinder 84 is fixedly connected to the plug plate 83, and the plug plate 83 is located inside the plug plate frame 81, and the two can slide relative to each other, and the plug plate frame 81 is fixedly connected to the outer wall of the discharge port of the fire-blocking door receiving bin 2;

[0028] Specifically, the air cylinder 84 is controlled to push the plug plate 83 to slide inside the plug plate frame 81, thereby realizing the opening and closing of the discharge port of the fire-blocking door receiving bin 2.

[0029] Furthermore, a bin cover 1 is provided on the fire-blocking door receiving bin 2 for opening or closing the feed port of the fire-blocking door receiving bin 2 .

[0030] The use process of the utility model is as follows: first, the bin cover 1 is opened, and the prefabricated powder is hoisted by a crane into a narrow steel bucket and added into the fire-blocking door receiving bin 2. At this time, the unloading gate valve 8 at the discharge end of the fire-blocking door receiving bin 2 is in a closed state. According to the purpose of the prefabricated powder, the rotary material pipe 7 is controlled to rotate by the power system 4. When the physical properties of the powder are consistent with those of the steelmaking converter, the rotary material pipe 7 and the converter are rotated at the same time and made to correspond to each other. Then, the unloading gate valve 8 is opened to realize the addition of the powder into the converter.

[0031] When the physical properties of the powder material match those of the ladle, the rotating material pipe 7 is matched with the under-furnace feeding device 9, so that the powder material is added into the ladle converter.

[0032] The above embodiments only express the preferred implementation modes of the present invention. It should be pointed out that, for those skilled in the art, any improvements made without departing from the concept of the present invention are all within the protection scope of the present invention.

Claims

1. A powder material adding device for a steelmaking converter fire-blocking door, comprising: A fire-blocking door receiving bin (2) penetrates the fire-blocking door and is welded to the fire-blocking door (5), wherein the feed port of the fire-blocking door receiving bin (2) is located outside the fire-blocking door (5), the discharge port of the fire-blocking door receiving bin (2) is located inside the fire-blocking door (5), a material discharge plug valve (8) is provided inside the discharge port of the fire-blocking door receiving bin (2), a rotating material pipe (7) is provided at the lower end of the discharge port of the fire-blocking door receiving bin (2), and a feeding device (9) is provided at the lower end of the rotating material pipe (7); A power installation platform (3) is welded and fixed to the outer wall of the fire-blocking door (5), and a power system (4) is provided on the power installation platform (3); The invention is characterized in that the rotating material pipe (7) is provided with a rotating material pipe body (71) facing the discharge port of the material receiving bin (2) of the fire-blocking door, and one end of the rotating material pipe body (71) close to the discharge port of the material receiving bin (2) of the fire-blocking door is provided with a notch matching the discharge port of the material receiving bin (2) of the fire-blocking door, and both sides of the notch are rotatably fixed on the shaft seat (72) through a pin shaft (73), and the shaft seat (72) is fixed on the inner wall of the fire-blocking door (5), and one of the pin shafts (73) is provided with a sprocket (74) coaxial therewith; The sprocket (74) is connected to the power system (4) via a chain transmission.

2. The powder material adding device for the fire-blocking door of a steelmaking converter according to claim 1, characterized in that: The unloading plug valve (8) is provided with a cylinder fixing frame (82) fixed on the outside of the fire-blocking door (5); one end of the cylinder fixing frame (82) away from the fire-blocking door (5) is connected and fixed to the base of the cylinder (84) through a cylinder fixing pin (85); the output shaft of the cylinder (84) is fixedly connected to the plug plate (83); the plug plate (83) is located inside the plug plate frame (81), and the two can slide relative to each other; the plug plate frame (81) is connected to the discharge port of the receiving bin (2).

3. The powder material adding device for the fire-blocking door of a steelmaking converter according to claim 2, characterized in that: The feeding device (9) comprises a receiving port (91) directly opposite to the discharge port of the rotating material pipe body (71), and the receiving port (91) is connected to the smoke hood (93) through a slide pipe (92).

4. The powder material adding device for the fire-blocking door of a steelmaking converter according to claim 3, characterized in that: The fire-blocking door receiving bin (2) is provided with a bin cover (1).

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