Mixed fuel mineral powder sintering machine

Abstract

The utility model discloses a mixed fuel mineral powder sintering machine, which belongs to the technical field of sintering machines and comprises a rack, a conveying belt is rotatably connected to the inner side of the rack, and a gas-powder mixing box is mounted on the inner side of the upper portion of one end, close to the conveying belt, of the rack; when the sintering machine works, materials are conveyed through the conveying belt, coal gas is conveyed into the gas-powder mixing box through the coal gas pipe, coal powder is conveyed into the coal gas pipe through the coal powder box through the powder outlet pipe, the coal gas and the coal powder are mixed through the gas-powder mixing box and then sprayed out of the spray head, and the coal gas and the coal powder sprayed out of the spray head are ignited. Materials passing through the lower portion of the gas-powder mixing box are sintered through combustion of mixed fuel, when coal gas flows in the coal gas pipe, the fan blades are driven to rotate, the fan blades drive the beating rods to rotate through the rotating shaft, after coal powder in the powder outlet pipe enters the coal gas pipe, the caked coal powder is smashed through the rotating beating rods, and the phenomenon that a spray head is blocked due to coal powder caking is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering machines, in particular to a mixed fuel mineral powder sintering machine. Background Art

[0002] The sintering machine is suitable for the sintering operation of large-scale ferrous metallurgical sintering plants, and is mainly suitable for the sintering treatment of iron ore powder in large and medium-sized sintering plants. In order to improve the sintering effect, a mixed fuel ore powder sintering machine is required.

[0003] The current mixed fuel mineral powder sintering machine, for example, a mixed fuel mineral powder sintering machine proposed in publication number: CN219839755U, is equipped with a coal powder injection pipe assembly at the gas nozzle, and the coal powder and the gas are fully mixed into a gas-powder mixed fuel through the jet effect of the gas, and then mixed with the hot air from the hot air chamber for combustion, and the flame is elongated in the contraction sintering chamber, thereby increasing the sintering area, increasing the sintering temperature, accelerating the sintering speed, improving the sintering quality, diversifying the energy supply, and improving the automation level, and has excellent characteristics such as energy saving, high efficiency, and environmental protection.

[0004] When the existing mixed fuel mineral powder sintering machine is in use, although a coal powder injection pipe assembly is set at the gas nozzle to fully mix the coal powder and the gas into a gas-powder mixed fuel through the jet effect of the gas, it is found during use that the coal powder often agglomerates due to poor storage. When the existing device is in use, the nozzle is easily blocked by the agglomerated coal powder, making it inconvenient to use. Utility Model Content

[0005] The utility model aims to provide a mixed fuel mineral powder sintering machine, which achieves the purpose of achieving that when the coal gas flows in the gas pipe, the fan blades are driven to rotate, and the fan blades drive the striking rods to rotate through the rotating shaft. After the coal powder in the powder outlet pipe enters the gas pipe, the agglomerated coal powder is crushed by the rotating striking rod, so as to avoid the purpose of coal powder agglomeration causing blockage of the nozzle.

[0006] To achieve the above object, the utility model provides the following technical solution: a mixed fuel mineral powder sintering machine, comprising a frame, a conveyor belt is rotatably connected to the inner side of the frame, and a gas-powder mixing box is installed on the inner side of the frame above one end of the conveyor belt, wherein:

[0007] The bottom of the gas-powder mixing box is connected to nozzles at equal intervals, a coal powder box is installed on the top of the frame close to the gas-powder mixing box, a gas pipe is connected to the middle of the top of the gas-powder mixing box, and a powder outlet pipe is connected to the bottom of the coal powder box, and the bottom end of the powder outlet pipe is connected to the gas pipe;

[0008] A guide plate is symmetrically installed inside the gas-powder mixing box, a coal powder feeding mechanism is arranged in the powder outlet pipe, the gas pipe is rotatably connected to a rotating shaft near the inside of the gas-powder mixing box, a fan blade is installed on the top of the rotating shaft, and a striking rod is symmetrically fixedly connected to the outer side of the rotating shaft near the bottom of the powder outlet pipe.

[0009] Preferably, a dust hood is installed on the inner side of the frame close to the lower side of the conveyor belt, and dust suction pipes are equidistantly connected to the bottom of the dust hood.

[0010] Preferably, the inner wall of the connecting portion between the gas pipe and the gas-powder mixing box is tapered, and the inner diameter of the connecting portion between the gas pipe and the gas-powder mixing box is smaller than the inner diameter of the gas pipe away from the gas-powder mixing box.

[0011] Preferably, the guide plates are cross-arranged on the inner walls on both sides of the air-powder mixing box, and the guide plates on both sides of the air-powder mixing box are arranged to be inclined downward.

[0012] Preferably, the coal powder feeding mechanism includes a rotating wheel, the powder discharge pipe is rotatably connected to the rotating wheel near the inside of the coal powder box, the ring side of the rotating wheel is equidistantly fixedly connected with a material removal plate, and a servo motor is installed on the outer side of the powder discharge pipe corresponding to the rotating wheel, and the shaft end of the servo motor is fixedly connected to the rotating wheel.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model, when the sintering machine is working, conveys materials through the conveyor belt, and at the same time conveys gas into the gas-powder mixing box through the gas pipe, the coal powder box conveys coal powder into the gas pipe through the powder outlet pipe, the gas and coal powder are mixed by the gas-powder mixing box and then sprayed out from the nozzle, the gas and coal powder sprayed out from the nozzle are ignited, and the materials passing under the gas-powder mixing box are sintered by the combustion of the mixed fuel, when the gas flows in the gas pipe, the fan blades are driven to rotate, and the fan blades drive the striking rod to rotate through the rotating shaft, after the coal powder in the powder outlet pipe enters the gas pipe, the agglomerated coal powder is crushed by the rotating striking rod, so as to avoid the agglomeration of coal powder and the blockage of the nozzle caused by the clogging of the nozzle.

[0015] 2. The utility model drives the rotating wheel to rotate through the servo motor, and then drives the material-shifting plate to rotate. The coal powder in the coal powder box is transported to the powder outlet pipe through the material-shifting plate. The coal powder in the powder outlet pipe flows toward the gas pipe through the inclined powder outlet pipe. The coal powder feeding speed can be adjusted by adjusting the rotation speed of the rotating wheel.

[0016] 3. In the utility model, when the coal gas and the coal powder enter the gas-powder mixing box, the guide plate is used to prevent the coal gas and the coal powder from being sprayed out directly through the nozzle, so that the coal gas and the coal powder flow back and forth in the gas-powder mixing box so as to fully mix the coal gas and the coal powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the side view of the coal powder box of the utility model;

[0019] Figure 3 For this utility model Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0020] In the figure: 1. frame; 2. conveyor belt; 3. dust hood; 4. dust pipe; 5. gas-powder mixing box; 6. nozzle; 7. coal powder box; 8. gas pipe; 9. powder outlet pipe; 10. guide plate; 11. rotating wheel; 12. material removal plate; 13. servo motor; 14. rotating shaft; 15. fan blade; 16. striking rod. DETAILED DESCRIPTION

[0021] 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.

[0022] Example:

[0023] See also Figures 1 to 3 The utility model provides a technical solution: a mixed fuel mineral powder sintering machine, comprising a frame 1, a conveyor belt 2 is rotatably connected to the inner side of the frame 1, and a gas-powder mixing box 5 is installed on the inner side of the frame 1 above one end of the conveyor belt 2, wherein:

[0024] The bottom of the gas-powder mixing box 5 is equidistantly connected with nozzles 6, a coal powder box 7 is installed on the top of the frame 1 close to the gas-powder mixing box 5, a gas pipe 8 is connected to the middle of the top of the gas-powder mixing box 5, and the bottom of the coal powder box 7 is connected to a powder outlet pipe 9, and the bottom end of the powder outlet pipe 9 is connected to the gas pipe 8;

[0025] A guide plate 10 is symmetrically installed inside the gas-powder mixing box 5, a coal powder feeding mechanism is arranged inside the powder outlet pipe 9, a rotating shaft 14 is rotatably connected to the gas pipe 8 near the gas-powder mixing box 5, a fan blade 15 is installed on the top of the rotating shaft 14, and a striking rod 16 is symmetrically fixedly connected to the outer side of the rotating shaft 14 near the bottom of the powder outlet pipe 9;

[0026] When the sintering machine is working, the material is conveyed by the conveyor belt 2, and the gas is conveyed into the gas-powder mixing box 5 through the gas pipe 8. The coal powder box 7 conveys coal powder into the gas pipe 8 through the powder outlet pipe 9. The gas and coal powder are mixed by the gas-powder mixing box 5 and then sprayed out from the nozzle 6. The gas and coal powder sprayed out from the nozzle 6 are ignited. The material passing under the gas-powder mixing box 5 is sintered by the combustion of the mixed fuel. When the gas flows in the gas pipe 8, the fan blades 15 are driven to rotate. The fan blades 15 drive the striking rod 16 to rotate through the rotating shaft 14. After the coal powder in the powder outlet pipe 9 enters the gas pipe 8, the agglomerated coal powder is crushed by the rotating striking rod 16 to prevent the agglomeration of coal powder from clogging the nozzle 6.

[0027] See also Figures 1 to 3 A dust hood 3 is installed on the inner side of the frame 1 near the bottom of the conveyor belt 2, and a dust suction pipe 4 is equidistantly connected to the bottom of the dust hood 3. The dust suction pipe 4 is connected to the fan. The smoke generated by sintering is adsorbed through the dust suction pipe 4 and the dust hood 3 to avoid exhaust gas polluting the air. The inner wall of the connection between the gas pipe 8 and the gas-powder mixing box 5 is conical, and the inner diameter of the connection between the gas pipe 8 and the gas-powder mixing box 5 is smaller than the inner diameter of the gas pipe 8 away from the gas-powder mixing box 5. When the gas and coal powder pass through the conical inner wall of the connection between the gas pipe 8 and the gas-powder mixing box 5, the injection speed of the coal powder is effectively improved, and the coal powder is made to collide with the guide plate 10, so that the coal powder can be crushed for the second time, and the agglomerated coal is further removed.

[0028] See also Figures 1 to 3 The guide plates 10 are cross-arranged on the inner walls of both sides of the gas-powder mixing box 5, and the guide plates 10 on both sides of the gas-powder mixing box 5 are tilted downward. When the coal gas and the coal powder enter the gas-powder mixing box 5, the guide plates 10 prevent the coal gas and the coal powder from being directly sprayed out through the nozzle 6, so that the coal gas and the coal powder flow back and forth in the gas-powder mixing box 5, so as to fully mix the coal gas and the coal powder. The coal powder feeding mechanism includes a rotating wheel 11, and the powder discharge pipe 9 is connected to the rotating wheel 11 for rotation near the inside of the coal powder box 7, and the ring side of the rotating wheel 11, etc. A material-push plate 12 is fixedly connected to the powder discharge pipe 9, and a servo motor 13 is installed on the outer side of the rotating wheel 11 corresponding to the powder discharge pipe 9. The shaft end of the servo motor 13 is fixedly connected to the rotating wheel 11. The servo motor 13 drives the rotating wheel 11 to rotate, and then drives the material-push plate 12 to rotate. The coal powder in the coal powder box 7 is transported to the powder discharge pipe 9 through the material-push plate 12. The coal powder in the powder discharge pipe 9 flows toward the gas pipe 8 through the inclined powder discharge pipe 9. The feeding speed of the coal powder can be adjusted by adjusting the rotation speed of the rotating wheel 11.

[0029] Working principle: This mixed fuel mineral powder sintering machine, when the sintering machine is working, the material is conveyed through the conveyor belt 2, and the gas is conveyed into the gas-powder mixing box 5 through the gas pipe 8. The coal powder box 7 conveys coal powder into the gas pipe 8 through the powder outlet pipe 9. The gas and coal powder are mixed in the gas-powder mixing box 5 and then sprayed out from the nozzle 6. The gas and coal powder sprayed from the nozzle 6 are ignited, and the material passing through the gas-powder mixing box 5 is sintered by the combustion of the mixed fuel. When the gas flows in the gas pipe 8, the coal powder is discharged from the nozzle 6. When the fan 15 is in motion, the fan blades 15 are driven to rotate, and the fan blades 15 drive the striking rods 16 to rotate through the rotating shaft 14. After the coal powder in the powder outlet pipe 9 enters the gas pipe 8, the agglomerated coal powder is crushed by the rotating striking rods 16 to prevent the coal powder from agglomerating and clogging the nozzle 6. When the coal gas and the coal powder pass through the conical inner wall at the connection between the gas pipe 8 and the gas-powder mixing box 5, the injection speed of the coal powder is effectively increased, and the coal powder is made to hit the guide plate 10, so that the coal powder can be crushed for a second time, and the agglomerated coal material can be further removed.

[0030] When the coal gas and coal powder enter the gas-powder mixing box 5, the guide plate 10 is used to prevent the coal gas and coal powder from being directly sprayed out through the nozzle 6, so that the coal gas and coal powder flow back and forth in the gas-powder mixing box 5 so as to fully mix the coal gas and coal powder. The servo motor 13 drives the rotating wheel 11 to rotate, and then drives the material shifting plate 12 to rotate. The coal powder in the coal powder box 7 is transported to the powder outlet pipe 9 through the material shifting plate 12. The coal powder in the powder outlet pipe 9 flows toward the gas pipe 8 through the inclined powder outlet pipe 9. The feeding speed of the coal powder can be adjusted by adjusting the rotation speed of the rotating wheel 11.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mixed fuel mineral powder sintering machine, comprising a frame (1), characterized in that: The inner side of the frame (1) is rotatably connected to a conveyor belt (2), and an air-powder mixing box (5) is installed on the inner side of the frame (1) above one end of the conveyor belt (2), wherein: The bottom of the gas-powder mixing box (5) is equidistantly connected to nozzles (6); a coal powder box (7) is installed on the top of the frame (1) close to the gas-powder mixing box (5); the middle of the top of the gas-powder mixing box (5) is connected to a gas pipe (8); the bottom of the coal powder box (7) is connected to a powder outlet pipe (9); the bottom end of the powder outlet pipe (9) is connected to the gas pipe (8); A guide plate (10) is symmetrically installed inside the gas-powder mixing box (5), a coal powder feeding mechanism is arranged inside the powder outlet pipe (9), a rotating shaft (14) is rotatably connected to the inside of the gas-powder mixing box (5) near the coal gas pipe (8), a fan blade (15) is installed at the top of the rotating shaft (14), and a striking rod (16) is symmetrically fixedly connected to the outer side of the rotating shaft (14) near the bottom of the powder outlet pipe (9).

2. The mixed fuel mineral powder sintering machine according to claim 1, characterized in that: A dust hood (3) is installed on the inner side of the frame (1) close to the lower side of the conveyor belt (2), and dust suction pipes (4) are equidistantly connected to the bottom of the dust hood (3).

3. The mixed fuel mineral powder sintering machine according to claim 1, characterized in that: The inner wall of the connection point between the gas pipe (8) and the gas-powder mixing box (5) is tapered, and the inner diameter of the connection point between the gas pipe (8) and the gas-powder mixing box (5) is smaller than the inner diameter of the gas pipe (8) away from the gas-powder mixing box (5).

4. The mixed fuel mineral powder sintering machine according to claim 1, characterized in that: The guide plates (10) are cross-arranged on the inner walls of both sides of the gas-powder mixing box (5), and the guide plates (10) on both sides of the gas-powder mixing box (5) are arranged to be tilted downward.

5. The mixed fuel mineral powder sintering machine according to claim 1, characterized in that: The pulverized coal feeding mechanism comprises a rotating wheel (11), the pulverized coal discharge pipe (9) is rotatably connected to the rotating wheel (11) near the inside of the pulverized coal box (7), a material shifting plate (12) is equidistantly fixedly connected to the ring side of the rotating wheel (11), a servo motor (13) is installed on the outer side of the pulverized coal discharge pipe (9) corresponding to the rotating wheel (11), and the shaft end of the servo motor (13) is fixedly connected to the rotating wheel (11).

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