Smoke exhaust device for steel heat treatment furnace

Abstract

The utility model discloses a smoke exhaust device for a steel heat treatment furnace, which comprises a heat treatment furnace main body, a plurality of separation blades are uniformly and fixedly arranged on the inner side of a heat absorption channel, one end of a heat absorption pipe is fixedly connected with a heat dissipation bent pipe, a fixed plate is fixedly arranged on the outer side of the heat dissipation bent pipe, and two heat dissipation fans are fixedly arranged in the fixed plate. A water outlet pipe communicated with the cold water tank is fixedly connected to the lower end of the heat dissipation bent pipe; and a circulating water pump is arranged on a pipeline of the water outlet pipe. The first smoke outlet pipe fitting penetrates through the cold water tank filled with cold water to absorb smoke heat, meanwhile, the circulating water pump is started, so that the cold water circularly flows in the heat dissipation bent pipe and the heat absorption pipe, the cold water in the heat absorption pipe further absorbs the smoke heat, the absorption effect is better, the heat dissipation fan is utilized, and the heat dissipation efficiency is improved. And therefore, continuous temperature rise of cold water in the cold water tank can be avoided, and the heat absorption capacity is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of steel processing, specifically to a flue gas exhaust device for steel heat treatment furnaces. Background Technology

[0002] A heat treatment furnace is a device used to perform various heat treatment processes on steel workpieces. Various processes such as annealing, quenching, and tempering can be carried out in the furnace. After heat treatment, residual stress in steel workpieces can be reduced, dimensions stabilized, deformation and cracking tendencies reduced, and the mechanical properties of the workpieces improved. However, when a heat treatment furnace is in use, the exhaust gas contains a large amount of heat and dust, which can harm the environment. Therefore, it is necessary to use a fume extraction device to remove the dust.

[0003] Currently, most exhaust systems used in steel heat treatment furnaces rely on simple water cooling to absorb heat. However, such structures have low heat absorption efficiency and still pose a threat to the environment. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the exhaust devices used in steel heat treatment furnaces in the prior art mostly absorb heat through simple water cooling, but such a structure has low heat absorption efficiency and still causes harm to the environment.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows: This utility model is a flue gas exhaust device for a steel heat treatment furnace, including a heat treatment furnace body, multiple baffles evenly fixedly installed on the inner side of the heat absorption channel, a heat dissipation bend fixedly connected to one end of the heat absorption tube, a fixing plate fixedly installed on the outer side of the heat dissipation bend, two cooling fans fixedly installed inside the fixing plate, and a water outlet pipe connected to a cold water tank fixedly connected to the lower end of the heat dissipation bend, with a circulating water pump installed on the water outlet pipe. This utility model absorbs heat from the flue gas by passing the first flue gas exhaust pipe through a cold water tank containing cold water. At the same time, the circulating water pump is activated, causing the cold water to circulate inside the heat dissipation bend and the heat absorption tube, allowing the cold water inside the heat absorption tube to further absorb heat from the flue gas, resulting in better absorption. Moreover, the cooling fans accelerate the airflow speed at the heat dissipation bend, thereby preventing the cold water in the cold water tank from continuously heating up and ensuring heat absorption capacity.

[0006] To achieve the above objectives, the technical solution of this utility model is: a flue gas exhaust device for a steel heat treatment furnace, comprising a heat treatment furnace body, a cold water tank fixedly installed on the outer side of the heat treatment furnace body, and a first flue gas outlet pipe fixedly connected to the top of the heat treatment furnace body, penetrating the cold water tank, a heat absorption pipe inserted inside the first flue gas outlet pipe, forming a heat absorption channel between the heat absorption pipe and the first flue gas outlet pipe, a plurality of baffles evenly fixedly installed on the inner wall of the heat absorption channel, a heat dissipation bend fixedly connected to one end of the heat absorption pipe, a fixing plate fixedly installed on the outer side of the heat dissipation bend, two cooling fans fixedly installed inside the fixing plate, a water outlet pipe connected to the cold water tank fixedly connected to the lower end of the heat dissipation bend, and a circulating water pump installed on the water outlet pipe.

[0007] Furthermore, a second smoke outlet pipe is fixedly connected to the upper end of the first smoke outlet pipe, and a dust filter is installed on the pipe of the second smoke outlet pipe.

[0008] Furthermore, a drain pipe is fixedly connected to the bottom of the cold water tank, and a control valve is installed on the drain pipe.

[0009] Furthermore, a reinforcing block is fixedly installed on the outside of the first smoke outlet pipe, and the reinforcing block is fixedly connected to the cold water tank.

[0010] Furthermore, a water inlet is fixedly connected to the top of the cold water tank, and a sealing cap is provided on the top of the water inlet.

[0011] Furthermore, the fixing plate is fixedly connected to the cold water tank, and the cold water tank is fixedly connected to the circulating water pump.

[0012] Compared with related technologies, the flue gas exhaust device for steel heat treatment furnaces provided by this utility model has the following beneficial effects:

[0013] This utility model provides a flue gas exhaust device for steel heat treatment furnaces. By passing the first exhaust pipe through a cold water tank filled with cold water, the device absorbs heat from the flue gas. Simultaneously, a circulating water pump is activated, causing the cold water to circulate inside the heat dissipation bend and the heat absorption pipe. This allows the cold water inside the heat absorption pipe to further absorb heat from the flue gas, resulting in better absorption. Furthermore, a cooling fan is used to accelerate the airflow at the heat dissipation bend, thereby preventing the cold water in the cold water tank from continuously heating up and ensuring heat absorption capacity. This invention solves the technical problem that existing flue gas exhaust devices for steel heat treatment furnaces mostly absorb heat through simple water cooling, but such structures have low heat absorption efficiency and still cause environmental harm. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a flue gas exhaust device for a steel heat treatment furnace proposed in this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram showing the connection between the first smoke outlet pipe, the heat dissipation bend, and the heat absorption pipe proposed in this utility model.

[0016] Figure 3 This is a left-side view of the connection between the cold water tank and the heat dissipation bend proposed in this utility model.

[0017] Figure 4 This utility model proposes a flue gas exhaust device for a steel heat treatment furnace. Figure 3 A magnified view of part A in the middle.

[0018] The components include: 1. Heat treatment furnace body; 2. Heat absorption pipe; 3. Flue gas filter; 4. Water inlet; 5. First flue gas outlet pipe; 6. Cold water tank; 7. Heat dissipation bend; 8. Circulating water pump; 9. Cooling fan; 10. Fixing plate; 11. Second flue gas outlet pipe; 12. Reinforcing block; 13. Drain pipe; 14. Water outlet pipe; 15. Heat absorption channel; and 16. Baffle plate. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings show typical embodiments of this utility model.

[0020] As per the instruction manual Figures 1-4 As shown, the present invention discloses a flue gas exhaust device for a steel heat treatment furnace, comprising a heat treatment furnace body 1, a cold water tank 6 fixedly installed on the outside of the heat treatment furnace body 1, and a first flue gas outlet pipe 5 that penetrates the cold water tank 6 fixedly connected to the top of the heat treatment furnace body 1. A heat absorption pipe 2 is inserted into the inside of the first flue gas outlet pipe 5, forming a heat absorption channel 15 between the heat absorption pipe 2 and the first flue gas outlet pipe 5. Multiple baffles 16 are evenly fixedly installed on the inner wall of the heat absorption channel 15. A heat dissipation bend 7 is fixedly connected to one end of the heat absorption pipe 2. A fixing plate 10 is fixedly installed on the outside of the heat dissipation bend 7. Two cooling fans 9 are fixedly installed inside the fixing plate 10. A water outlet pipe 14 that communicates with the cold water tank 6 is fixedly connected to the lower end of the heat dissipation bend 7. A circulating water pump 8 is installed on the water outlet pipe 14.

[0021] In practice, the heat of the flue gas is absorbed by passing the first flue gas outlet pipe 5 through the cold water tank 6 containing cold water. At the same time, the circulating water pump 8 is started to make the cold water circulate inside the heat dissipation bend 7 and the heat absorption pipe 2, so that the cold water inside the heat absorption pipe 2 can further absorb the heat of the flue gas, resulting in better absorption effect. Moreover, the cooling fan 9 is used to accelerate the air circulation speed at the heat dissipation bend 7, thereby preventing the cold water in the cold water tank 6 from continuously heating up and ensuring the heat absorption capacity. This solves the technical problem that the flue gas exhaust devices used in steel heat treatment furnaces in the prior art mostly absorb heat by simple water cooling, but such structures have low heat absorption efficiency and still cause environmental harm.

[0022] As per the instruction manual Figure 1 As shown, the upper end of the first smoke outlet pipe 5 is fixedly connected to the second smoke outlet pipe 11, and the pipe of the second smoke outlet pipe 11 is equipped with a dust filter 3, which can absorb and treat the dust in the smoke.

[0023] As per the instruction manual Figure 1 As shown, a drain pipe 13 is fixedly connected to the bottom of the cold water tank 6. A control valve is installed on the drain pipe 13. By opening the control valve, the water inside the cold water tank 6 can be discharged. A water inlet 4 is fixedly connected to the top of the cold water tank 6. A sealing cover is installed on the top of the water inlet 4. Cold water can be injected into the cold water tank 6 through the water inlet 4.

[0024] As per the instruction manual Figure 2 As shown, a reinforcing block 12 is fixedly installed on the outside of the first smoke outlet pipe 5. The reinforcing block 12 is fixedly connected to the cold water tank 6 to enhance the firmness of the installation of the first smoke outlet pipe 5.

[0025] As per the instruction manual Figure 1 As shown, the fixed plate 10 is fixedly connected to the cold water tank 6, and the cold water tank 6 is fixedly connected to the circulating water pump 8.

[0026] In practical use, when the heat treatment furnace body 1 is running, the flue gas is discharged from the first flue gas outlet pipe 5 and filtered by the dust filter 3. At the same time, the cold water inside the cold water tank 6 absorbs the heat of the flue gas in the first flue gas outlet pipe 5, and the cooling fan 9 and the circulating water pump 8 are started. With the help of the circulating water pump 8, the cold water is continuously circulated into the interior of the heat dissipation bend 7 and the heat absorption pipe 2. The cold water in the heat absorption pipe 2 further absorbs the heat of the flue gas. The cooling fan 9 can accelerate the air circulation speed at the heat dissipation bend 7, so that the cold water inside the cold water tank 6 will not continue to rise in temperature, and avoid excessively high flue gas heat being discharged from the second flue gas outlet pipe 11, thus avoiding environmental damage.

[0027] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smoke exhaust device for a steel heat treatment furnace, comprising a heat treatment furnace main body (1), characterized in that: The outer side of the heat treatment furnace body (1) is fixedly installed with a cold water tank (6), and the top of the heat treatment furnace body (1) is fixedly connected with a first smoke outlet pipe (5) penetrating through the cold water tank (6), the inside of the first smoke outlet pipe (5) is inserted with a heat absorption pipe (2), a heat absorption channel (15) is formed between the heat absorption pipe (2) and the first smoke outlet pipe (5), a plurality of baffle plates (16) are uniformly fixedly installed on the inner wall of the heat absorption channel (15), one end of the heat absorption pipe (2) is fixedly connected with a heat dissipation elbow pipe (7), the outer side of the heat dissipation elbow pipe (7) is fixedly installed with a fixed plate (10), the inside of the fixed plate (10) is fixedly installed with two heat dissipation fans (9), the lower end of the heat dissipation elbow pipe (7) is fixedly connected with a water outlet pipe (14) in communication with the cold water tank (6), and a circulating water pump (8) is arranged on the pipeline of the water outlet pipe (14).

2. The smoke exhaust device for a steel heat treatment furnace according to claim 1, characterized in that: The upper end of the first smoke outlet pipe (5) is fixedly connected with a second smoke outlet pipe (11), and a smoke dust filter (3) is arranged on the pipeline of the second smoke outlet pipe (11).

3. The smoke exhaust device for a steel heat treatment furnace according to claim 1, characterized in that: The bottom of the cold water tank (6) is fixedly connected with a drain pipe (13), and a control valve is arranged on the pipeline of the drain pipe (13).

4. The smoke exhaust device for a steel heat treatment furnace according to claim 2, characterized by: The outer side of the first smoke outlet pipe (5) is fixedly installed with a reinforcing block (12), and the reinforcing block (12) is fixedly connected between the cold water tank (6).

5. The smoke exhaust device for a steel heat treatment furnace according to claim 3, characterized in that: The top of the cold water tank (6) is fixedly connected with a water inlet (4), and a sealing cover is arranged on the top of the water inlet (4).

6. The smoke exhaust device for a steel heat treatment furnace according to claim 5, characterized in that: The fixed plate (10) is fixedly connected with the cold water tank (6), and the cold water tank (6) is fixedly connected with the circulating water pump (8).

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