Waste heat recovery mechanism of steelmaking furnace for steelmaking

Abstract

The utility model discloses a waste heat recovery mechanism of a steelmaking furnace for steelmaking, and relates to the technical field of steelmaking, the waste heat recovery mechanism comprises a steelmaking furnace body, a heat exchange cylinder, a water tank and a base, the upper end of the steelmaking furnace body is sleeved with a furnace cover, the upper end of the furnace cover is fixedly sleeved with a hose, and the other end of the hose is fixedly sleeved at the position, close to the middle lower position, of one side of the heat exchange cylinder; a heat exchange tube is sleeved with the heat exchange cylinder, heat conduction blades fixedly sleeve the outer wall of the heat exchange tube, hollow shafts fixedly sleeve the upper end and the lower end of the heat exchange tube, a water pumping tube and a backflow tube fixedly sleeve the upper end and the lower end of the water tank respectively, and the other ends of the water pumping tube and the backflow tube are rotationally sleeved with the two hollow shafts respectively; by arranging the heat exchange cylinder, the hose, the heat exchange pipe, the heat conduction blades, the water pumping pipe, the backflow pipe and the water tank, the effect of utilizing waste heat of the steel-making furnace is achieved, the problem that waste is caused due to the fact that waste heat of a traditional steel-making furnace is not effectively utilized is solved, and practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of steelmaking, in particular to a waste heat recovery mechanism of a steelmaking furnace used for steelmaking. Background Art

[0002] In actual production, steel often contains different alloy elements according to different uses, such as manganese, nickel, vanadium, etc. Steel is obtained by putting pig iron for steelmaking into a steelmaking furnace and smelting it according to a certain process. Steel products include steel ingots, continuous casting billets and various steel castings directly cast.

[0003] At present, steelmaking furnaces are needed in the steelmaking process. A large amount of heat will be generated in the steelmaking process. If it is not utilized and directly discharged, it will cause heat loss and waste. Based on this, we propose an improvement on the waste heat recovery mechanism of the steelmaking furnace used for steelmaking. Utility Model Content

[0004] The main purpose of the utility model is to provide a waste heat recovery mechanism for a steelmaking furnace used for steelmaking, which can effectively solve the technical problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A waste heat recovery mechanism for a steelmaking furnace used for steelmaking comprises a steelmaking furnace body, a heat exchange cylinder, a water tank and a base, wherein a furnace cover is sleeved on the upper end of the steelmaking furnace body, a hose is fixedly sleeved on the upper end of the furnace cover, the other end of the hose is fixedly sleeved on one side of the heat exchange cylinder near the middle and lower position, a heat exchange tube is sleeved inside the heat exchange cylinder, a heat conduction blade is fixedly sleeved on the outer wall of the heat exchange tube, the upper and lower ends of the heat exchange tube are fixedly sleeved with hollow shafts, the upper and lower ends of the water tank are respectively fixedly sleeved with a pumping pipe and a return pipe, the other ends of the pumping pipe and the return pipe are respectively rotatably sleeved in two hollow shafts.

[0007] As a further solution of the utility model, a mounting frame is fixedly sleeved on the inner wall of the upper opening of the heat exchange tube, a filter screen is fixedly arranged in the mounting frame, and the two hollow shafts are rotatably sleeved on the middle position of the mounting frame and the bottom plate of the heat exchange tube respectively.

[0008] As a further solution of the utility model, a cleaning plate is fixedly connected to the outer wall of the hollow shaft at the upper end, a cleaning brush is fixedly connected to the upper end of the cleaning plate, and the cleaning brush is arranged at the lower end of the filter.

[0009] As a further solution of the utility model, a motor is fixedly connected to one side of the upper end surface of the base, a synchronous wheel 2 is fixedly sleeved on the output end of the motor, a synchronous wheel 1 is fixedly sleeved on the outer wall of the hollow shaft located at the lower end, a synchronous belt is sleeved on the outer walls of the synchronous wheel 1 and the synchronous wheel 2, and the synchronous belt is respectively engaged with the synchronous wheel 1 and the synchronous wheel 2.

[0010] As a further solution of the utility model, a handle is fixedly connected to the front end of the furnace cover, a support plate is fixedly connected to the upper end of the base, and the rear end of the furnace cover is rotatably connected to the support plate via a rotating shaft.

[0011] As a further solution of the utility model, an output connecting pipe is fixedly sleeved on one side of the steelmaking furnace body close to the lower end surface, and a slag discharge pipe is fixedly sleeved on one side of the heat exchange tube close to the lower end.

[0012] As a further solution of the utility model, the steelmaking furnace body and the water tank are both fixedly arranged on a base, and the heat exchange cylinder is fixedly arranged on an outer wall of the water tank.

[0013] The beneficial effects of the utility model are as follows:

[0014] By arranging a heat exchange cylinder, a hose, a heat exchange tube, heat transfer blades, a water pumping pipe, a return pipe and a water tank structure, the heat generated in the steelmaking furnace body is introduced into the heat exchange cylinder by using the hose, and at the same time, the water pumping pipe draws the cooling water in the water tank into the heat exchange tube, and after heat exchange through the heat transfer blades, the cooling water flows back to the water tank through the return pipe, thereby completing the heating of the liquid in the water tank, thereby realizing the effective utilization of the waste heat of the steelmaking furnace body;

[0015] By setting a filter at the upper end of the heat exchange tube, the gas introduced by the hose can be filtered and then discharged to avoid air pollution. At the same time, the heat exchange tube is used to drive the heat transfer blades to rotate, so that the impurities generated by the filter can be guided to the bottom of the heat exchange tube and finally discharged through the slag discharge pipe. At the same time, the heat exchange tube can drive the hollow shaft at the upper end to rotate, and then drive the cleaning brush to rotate through the cleaning plate to clean the lower end of the filter to avoid clogging of the filter, which is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of a waste heat recovery mechanism of a steelmaking furnace for steelmaking according to the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of a waste heat recovery mechanism of a steelmaking furnace for steelmaking according to the utility model;

[0018] Figure 3 It is a schematic diagram of the rear structure of a waste heat recovery mechanism of a steelmaking furnace for steelmaking according to the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the distribution structure of cleaning brushes of a waste heat recovery mechanism of a steelmaking furnace for steelmaking.

[0020] In the figure: 1. steelmaking furnace body; 2. heat exchange cylinder; 3. water tank; 4. base; 5. furnace cover; 6. hose; 7. heat exchange tube; 8. heat transfer blade; 9. hollow shaft; 10. water suction pipe; 11. return pipe; 12. cleaning plate; 13. cleaning brush; 14. installation frame; 15. filter screen; 16. synchronous wheel 1; 17. motor; 18. synchronous wheel 2; 19. synchronous belt; 20. slag discharge pipe; 21. output connecting pipe; 22. support plate. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-4 As shown, a waste heat recovery mechanism of a steelmaking furnace for steelmaking comprises a steelmaking furnace body 1, a heat exchange tube 2, a water tank 3 and a base 4. A furnace cover 5 is sleeved on the upper end of the steelmaking furnace body 1, a hose 6 is fixedly sleeved on the upper end of the furnace cover 5, and the other end of the hose 6 is fixedly sleeved on one side of the heat exchange tube 2 near the middle and lower position. A heat exchange tube 7 is sleeved in the heat exchange tube 2, and a heat conduction blade 8 is fixedly sleeved on the outer wall of the heat exchange tube 7. A hollow shaft 9 is fixedly sleeved on the upper and lower ends of the heat exchange tube 7. A pumping pipe 10 and a return pipe 11 are fixedly sleeved on the upper and lower ends of the water tank 3, respectively. The other ends of the pumping pipe 10 and the return pipe 11 are rotatably sleeved in the two hollow shafts 9, respectively. The pumping pipe 10 pumps the liquid in the water tank 3 into the upper hollow shaft 9, and then flows through the heat exchange tube 7 for heat exchange, and then flows from the lower hollow shaft 9 into the return pipe 11, and re-enters the water tank 3.

[0023] In this embodiment, a mounting frame 14 is fixedly sleeved on the inner wall of the upper opening of the heat exchange tube 2, a filter screen 15 is fixedly arranged in the mounting frame 14, and two hollow shafts 9 are rotatably sleeved on the mounting frame 14 and the middle position of the bottom plate of the heat exchange tube 2 respectively.

[0024] In this embodiment, a cleaning plate 12 is fixedly connected to the outer wall of the hollow shaft 9 at the upper end, and a cleaning brush 13 is fixedly connected to the upper end of the cleaning plate 12. The cleaning brush 13 is arranged at the lower end of the filter screen 15. The cleaning plate 12 is driven to rotate by the hollow shaft 9, thereby driving the cleaning brush 13 to clean the lower end of the filter screen 15 to avoid clogging of the mesh.

[0025] In this embodiment, a motor 17 is fixedly connected to one side of the upper end surface of the base 4, and a synchronous wheel 2 18 is fixedly sleeved on the output end of the motor 17. A synchronous wheel 16 is fixedly sleeved on the outer wall of the hollow shaft 9 located at the lower end, and a synchronous belt 19 is sleeved on the outer walls of the synchronous wheel 16 and the synchronous wheel 2 18. The synchronous belt 19 is respectively engaged with the synchronous wheel 16 and the synchronous wheel 2 18. The synchronous belt 19 drives the synchronous wheel 16 and the synchronous wheel 2 18 to rotate. After starting the motor 17, it can drive the hollow shaft 9 located at the lower end to rotate, and then drive the heat exchange tube 7 to rotate.

[0026] In this embodiment, a handle is fixedly connected to the front end of the furnace cover 5, a support plate 22 is fixedly connected to the upper end of the base 4, and the rear end of the furnace cover 5 is rotatably connected to the support plate 22 via a rotating shaft, so as to facilitate opening and closing of the furnace cover 5.

[0027] In this embodiment, an output connecting pipe 21 is fixedly sleeved on one side of the steelmaking furnace body 1 near the lower end surface for outputting molten steel, and a slag discharge pipe 20 is fixedly sleeved on one side of the heat exchange tube 2 near the lower end for convenient discharge of impurities in the flue gas.

[0028] In this embodiment, the steelmaking furnace body 1 and the water tank 3 are both fixedly arranged on the base 4 , and the heat exchange tube 2 is fixedly arranged on the outer wall of the water tank 3 .

[0029] It should be noted that the utility model is a waste heat recovery mechanism for a steelmaking furnace for steelmaking. When in use, the heat generated by the steelmaking furnace body 1 will be introduced into the heat exchange tube 2 through the hose 6, and then flow upward. In the process, the cooling water in the water tank 3 is pumped into the heat exchange tube 7 through the pumping pipe 10 by the water pump built into the water tank 3 to complete the heat exchange with the high-temperature gas in the heat exchange tube 2. The generated hot water then flows back into the water tank 3 from the return pipe 11, and the reciprocating cycle completes the heating of the liquid in the water tank 3. At the same time, the high-temperature gas is filtered through the filter screen 15 after heat exchange and then discharged into the air. The impurities generated are filtered out, and the synchronous wheel 2 18 is driven to rotate by the motor 17, and then the synchronous wheel 1 16 is driven to rotate by the synchronous belt 19, and then the heat exchange tube 7 is driven to rotate by the hollow shaft 9, and then the heat transfer blade 8 is driven to rotate to guide the bottom of the heat exchange tube 2, and finally discharged through the slag discharge pipe 20. At the same time, when the hollow shaft 9 at the upper end rotates, it will drive the cleaning brush 13 to rotate through the cleaning plate 12 to clean the filter screen 15 to prevent the mesh from being blocked.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A waste heat recovery mechanism for a steelmaking furnace for steelmaking, comprising a steelmaking furnace body (1), a heat exchange cylinder (2), a water tank (3) and a base (4), characterized in that: The upper end of the steelmaking furnace body (1) is sleeved with a furnace cover (5), and the upper end of the furnace cover (5) is fixedly sleeved with a hose (6), and the other end of the hose (6) is fixedly sleeved on one side of the heat exchange tube (2) near the middle and lower position. The heat exchange tube (2) is sleeved with a heat exchange tube (7), and the outer wall of the heat exchange tube (7) is fixedly sleeved with a heat conduction blade (8), and the upper and lower ends of the heat exchange tube (7) are fixedly sleeved with a hollow shaft (9), and the upper and lower ends of the water tank (3) are respectively fixedly sleeved with a water pumping pipe (10) and a return pipe (11), and the other ends of the water pumping pipe (10) and the return pipe (11) are respectively rotatably sleeved in the two hollow shafts (9).

2. The waste heat recovery mechanism of a steelmaking furnace for steelmaking according to claim 1, characterized in that: A mounting frame (14) is fixedly sleeved on the inner wall of the upper opening of the heat exchange tube (2), a filter screen (15) is fixedly arranged inside the mounting frame (14), and the two hollow shafts (9) are rotatably sleeved on the mounting frame (14) and the middle position of the bottom plate of the heat exchange tube (2) respectively.

3. The waste heat recovery mechanism of a steelmaking furnace for steelmaking according to claim 2, characterized in that: A cleaning plate (12) is fixedly connected to the outer wall of the hollow shaft (9) at the upper end, a cleaning brush (13) is fixedly connected to the upper end of the cleaning plate (12), and the cleaning brush (13) is arranged at the lower end of the filter screen (15).

4. The waste heat recovery mechanism of a steelmaking furnace for steelmaking according to claim 1, characterized in that: A motor (17) is fixedly connected to one side of the upper end surface of the base (4); a second synchronous wheel (18) is fixedly sleeved on the output end of the motor (17); a first synchronous wheel (16) is fixedly sleeved on the outer wall of the hollow shaft (9) at the lower end; a synchronous belt (19) is sleeved on the outer walls of the first synchronous wheel (16) and the second synchronous wheel (18); and the synchronous belt (19) is respectively meshed with the first synchronous wheel (16) and the second synchronous wheel (18).

5. The waste heat recovery mechanism of a steelmaking furnace for steelmaking according to claim 1, characterized in that: The front end of the furnace cover (5) is fixedly connected to a handle, the upper end of the base (4) is fixedly connected to a support plate (22), and the rear end of the furnace cover (5) is rotatably connected to the support plate (22) via a rotating shaft.

6. The waste heat recovery mechanism of a steelmaking furnace for steelmaking according to claim 1, characterized in that: An output connecting pipe (21) is fixedly sleeved on one side of the steelmaking furnace body (1) close to the lower end surface, and a slag discharge pipe (20) is fixedly sleeved on one side of the heat exchange tube (2) close to the lower end.

7. The waste heat recovery mechanism of a steelmaking furnace for steelmaking according to claim 1, characterized in that: The steelmaking furnace body (1) and the water tank (3) are both fixedly arranged on a base (4), and the heat exchange cylinder (2) is fixedly arranged on the outer wall of the water tank (3).

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