Roasting furnace

Abstract

The utility model relates to the technical field of roasting furnaces, and discloses a roasting furnace which comprises a roasting furnace body, the left wall of the roasting furnace body is sleeved with one end of a smoke pipeline, the inner wall of the roasting furnace body is fixedly connected with an igniter, and the right wall of the roasting furnace body is provided with a mixing assembly. The top end face of the mixing chamber of the roasting furnace is connected with the gas pipeline in a sleeving mode, the C-shaped pipe is driven by the motor to rotate, air is converted into rotating air flow from straight-through air flow, the rotating air flow has a large contact area, mutual contact and diffusion between the air and gas can be increased, mixing between the air and the gas is more sufficient and even, and the service life of the roasting furnace is prolonged. The inner top of the flow dividing box is connected with the C-shaped pipe in a sleeved mode, the air outlet holes are formed in the inner bottom of the flow dividing box, air enters the flow dividing box from the C-shaped pipe and then is exhausted from the air outlet holes, airflow is divided into one flow, the dispersion degree of the air is improved, and the mixing effect of the air and fuel gas is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of roasting furnaces, in particular to a roasting furnace. Background Art

[0002] Excavator bucket teeth are important parts of the excavator working device, used for digging and loading various materials. In order to improve the hardness, wear resistance and durability of bucket teeth, the bucket teeth are often treated by roasting process. The roasting furnace is a key equipment used in bucket tooth production, which is used to perform high-temperature treatment on bucket teeth to improve their mechanical properties.

[0003] The furnace body of the roasting furnace is usually made of high-temperature resistant materials (such as refractory bricks, refractory materials), which can withstand high-temperature environments. It usually has appropriate size and structure to accommodate the materials to be processed and provide appropriate space and channels for gas flow. The heating system of the roasting furnace is used to provide a high-temperature heat source. The combustion heating furnace generates high-temperature combustion gas by burning fuel and air.

[0004] However, in actual use of the above equipment, the existing roasting furnace usually directly injects air and gas into the furnace for combustion. The air and gas are not fully mixed during the injection process, resulting in incomplete combustion, excessive by-products, and poor combustion effect. In view of this, we propose a roasting furnace. Utility Model Content

[0005] The purpose of the utility model is to provide a roasting furnace to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a roasting furnace, comprising a roasting furnace body, the left wall of the roasting furnace body is sleeved with one end of a flue gas duct, the inner wall of the roasting furnace body is fixedly connected to an igniter, and the right wall of the roasting furnace body is provided with a mixing assembly, and the mixing assembly includes:

[0007] A mixing chamber, the side wall of the roasting furnace body is fixedly connected with the mixing chamber, the top end face of the mixing chamber is sleeved with the gas pipeline, the air pipeline is fixedly installed with the smoke pipeline, one end of the air pipeline close to the mixing chamber passes through the bottom of the inner wall of the smoke pipeline, and the other end of the air pipeline passes through the top of the inner wall of the smoke pipeline;

[0008] C-type tube. One end of the air duct close to the mixing chamber is sleeved with one end of the C-type tube, and the other end of the C-type tube is sleeved with the top end surface of the mixing chamber. The inner wall of the C-type tube is provided with a guide groove;

[0009] The motor is fixedly connected to the top end surface of the mixing chamber, the output end of the motor is fixedly connected to a rotating shaft, and the side wall of the rotating shaft is transmission-connected to the C-shaped tube through a sleeved belt.

[0010] Preferably, a diverter box is fixedly connected to the top end surface of the mixing chamber, the inner top of the diverter box is sleeved with the C-shaped tube, and an air outlet is opened on the inner bottom of the diverter box.

[0011] Preferably, the left inner wall of the mixing chamber is fixedly connected to one end of the air inlet, the other end of the air inlet is fixedly connected to the right inner wall of the roasting furnace body, and the igniter is located above the air inlet.

[0012] Preferably, the guide groove is spirally opened on the inner wall of the C-shaped tube to guide the air so that the air can be better transformed from straight airflow to rotating airflow.

[0013] Preferably, the middle portion of the air duct is spirally sleeved inside the flue gas duct, thereby extending the path length of heat exchange between the air and the exhaust gas in the flue gas duct and improving the heat exchange effect.

[0014] Preferably, there are a plurality of air outlet holes, and the plurality of air outlet holes are arranged at equal intervals on the inner bottom of the diversion box.

[0015] Compared with the prior art, the utility model provides a roasting furnace with the following beneficial effects:

[0016] 1. The roasting furnace is provided with a mixing chamber, a flue gas duct, an air duct, a C-shaped tube, a motor, a belt and a guide groove, so that the air can be transformed from a straight airflow to a rotating airflow. The rotating airflow has a large contact area, which can increase the mutual contact and diffusion between the air and the gas, making the mixing between the air and the gas more sufficient and uniform, which is conducive to the combustion reaction.

[0017] 2. In the roasting furnace, the top end face of the mixing chamber is fixedly connected with a diverter box, the inner top of the diverter box is connected with the C-type tube, and the inner bottom of the diverter box is provided with an air outlet. The air enters the diverter box from the C-type tube and is discharged from the air outlet. The air flow is divided into streams, which improves the dispersion of the air and the mixing effect of the air and the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the smoke duct of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of area A of the utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the C-type tube of the utility model;

[0022] Figure 5This is a schematic diagram of the internal structure of the roasting furnace body of the utility model;

[0023] Figure 6 This is a schematic diagram of the internal structure of the mixing chamber of the utility model;

[0024] Figure 7 This is a schematic diagram of the structure of area B of the utility model.

[0025] In the figure: 1. roasting furnace body; 2. mixing chamber; 3. flue gas duct; 4. air duct; 5. gas pipeline; 6. C-type pipe; 7. belt; 8. rotating shaft; 9. motor; 10. guide groove; 11. air inlet; 12. igniter; 13. diverter box; 14. air outlet. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 7 As shown, the utility model provides a technical solution: a roasting furnace, including a roasting furnace body 1, the left wall of the roasting furnace body 1 is sleeved with one end of a flue gas duct 3, the inner wall of the roasting furnace body 1 is fixedly connected with an igniter 12, and the right wall of the roasting furnace body 1 is provided with a mixing assembly, the mixing assembly includes a mixing chamber 2, a flue gas duct 3, an air duct 4, a C-shaped tube 6, a motor 9, a belt 7 and a guide groove 10.

[0027] In one embodiment of the utility model, a mixing chamber 2 is fixedly connected to the side wall of the roasting furnace body 1, the left inner wall of the mixing chamber 2 is fixedly connected to one end of the air inlet 11, the other end of the air inlet 11 is fixedly connected to the right inner wall of the roasting furnace body 1, the igniter 12 is located above the air inlet 11, the top end face of the mixing chamber 2 is sleeved with the gas pipeline 5, the air pipeline 4 is fixedly installed with the flue gas pipeline 3, the end of the air pipeline 4 close to the mixing chamber 2 passes through the bottom of the inner wall of the flue gas pipeline 3, the other end of the air pipeline 4 passes through the top of the inner wall of the flue gas pipeline 3, and the middle part of the air pipeline 4 is spirally sleeved on the flue gas pipeline 3 Internally, the path length of heat exchange between the air and the exhaust gas in the flue gas duct 3 is extended to improve the heat exchange effect. One end of the air duct 4 close to the mixing chamber 2 is sleeved with one end of the C-tube 6, and the other end of the C-tube 6 is sleeved with the top end face of the mixing chamber 2. A guide groove 10 is provided on the inner wall of the C-tube 6. The guide groove 10 is spirally provided on the inner wall of the C-tube 6 to guide the air so that the air can be better transformed from straight airflow to rotating airflow. The top end face of the mixing chamber 2 is fixedly connected to the motor 9, and the output end of the motor 9 is fixedly connected to the rotating shaft 8. The side wall of the rotating shaft 8 is transmission-connected to the C-tube 6 through the sleeved belt 7.

[0028] Exhaust gas passes through the flue gas duct 3, and air passes through the air duct 4. The air and exhaust gas exchange heat to improve the combustion effect. The motor 9 starts to drive the rotating shaft 8 to rotate, and further drives the C-type tube 6 to rotate through the transmission of the belt 7. The air in the C-type tube 6 is transformed from a straight airflow to a rotating airflow due to centrifugal force. The spiral guide groove 10 guides the air so that the air can be better transformed from a straight airflow to a rotating airflow. The rotating airflow has a larger contact area, which can increase the mutual contact and diffusion between the air and the gas, break the laminar structure in the airflow, and make the mixing between the air and the gas more sufficient and uniform, which is conducive to the combustion reaction.

[0029] In addition, in order to improve the dispersion of air, a diverter box 13 is fixedly connected to the top end face of the mixing chamber 2. The inner top of the diverter box 13 is sleeved with the C-type tube 6. An air outlet 14 is provided on the inner bottom of the diverter box 13. There are a number of air outlets 14, which are evenly spaced on the inner bottom of the diverter box 13. The air enters the diverter box 13 from the C-type tube 6 and is discharged from the air outlet 14. The airflow is divided into streams, which improves the dispersion of the air and the mixing effect of air and gas.

[0030] In the utility model, when in use, the exhaust gas passes through the flue gas duct 3, and the air passes through the air duct 4. The air and the exhaust gas exchange heat to improve the combustion effect. The motor 9 is started to drive the rotating shaft 8 to rotate, and further drives the C-type tube 6 to rotate through the transmission of the belt 7. The air in the C-type tube 6 is converted from a straight airflow to a rotating airflow due to centrifugal force, so that the mixing between the air and the gas is more sufficient and uniform, which is conducive to the combustion reaction. The air enters the diverter box 13 from the C-type tube 6 and is then discharged from the air outlet 14. The airflow is divided into one by one, which improves the dispersion of the air and improves the mixing effect of the air and the gas.

[0031] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A roasting furnace, comprising a roasting furnace body (1), wherein one end of a flue gas duct (3) is sleeved on the left wall of the roasting furnace body (1), and an igniter (12) is fixedly connected to the inner wall of the roasting furnace body (1), characterized in that: The right wall of the roasting furnace body (1) is provided with a mixing assembly, and the mixing assembly comprises: A mixing chamber (2), the side wall of the roasting furnace body (1) is fixedly connected with the mixing chamber (2), the top end face of the mixing chamber (2) is sleeved with a gas pipeline (5), the air pipeline (4) is fixedly installed with the smoke pipeline (3), one end of the air pipeline (4) close to the mixing chamber (2) passes through the bottom of the inner wall of the smoke pipeline (3), and the other end of the air pipeline (4) passes through the top of the inner wall of the smoke pipeline (3); A C-shaped tube (6), one end of the air duct (4) close to the mixing chamber (2) is sleeved with one end of the C-shaped tube (6), the other end of the C-shaped tube (6) is sleeved with the top end surface of the mixing chamber (2), and the inner wall of the C-shaped tube (6) is provided with a guide groove (10); A motor (9), the top end surface of the mixing chamber (2) is fixedly connected to the motor (9), the output end of the motor (9) is fixedly connected to a rotating shaft (8), and the side wall of the rotating shaft (8) is transmission-connected to the C-shaped tube (6) via a sleeved belt (7).

2. A roasting furnace according to claim 1, characterized in that: The top end surface of the mixing chamber (2) is fixedly connected to a diverter box (13), the inner top of the diverter box (13) is sleeved with the C-shaped tube (6), and the inner bottom of the diverter box (13) is provided with an air outlet hole (14).

3. A roasting furnace according to claim 1, characterized in that: The left inner wall of the mixing chamber (2) is fixedly connected to one end of the air inlet (11), and the other end of the air inlet (11) is fixedly connected to the right inner wall of the roasting furnace body (1), and the igniter (12) is located above the air inlet (11).

4. A roasting furnace according to claim 1, characterized in that: The guide groove (10) is spirally formed on the inner wall of the C-shaped tube (6).

5. A roasting furnace according to claim 1, characterized in that: The middle part of the air duct (4) is spirally sleeved inside the smoke duct (3).

6. A roasting furnace according to claim 2, characterized in that: The number of the air outlet holes (14) is set to be a plurality, and the plurality of air outlet holes (14) are arranged at equal intervals on the inner bottom of the diversion box (13).

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