A furnace pot structure

Abstract

The utility model provides a kind of furnace pot structure belongs to sintering furnace pot technical field, including jar body and multiple heat conduction dustproof plate. Sintering chamber is formed inside jar body, and the one end of jar body is provided with first shaft body in axial direction, and the other end of jar body is provided with second shaft body in axial direction, and the axial direction of first shaft body is provided with air inlet channel, and the axial direction of second shaft body is provided with exhaust passage;Multiple heat conduction dustproof plate is circumferentially spaced in the inner wall of sintering chamber, and heat conduction dustproof plate extends along the axial direction of sintering chamber, and heat conduction dustproof plate is inclinedly arranged along the radial direction of sintering chamber, and its inclined direction is opposite with the rotation direction of jar body.The utility model provides a kind of furnace pot structure, ensures that each area atmosphere concentration difference is controlled in very small range, makes material and high-temperature airflow, heat conduction plate body fully contact, shortens temperature balance time, ensures that each part of material and atmosphere, heat fully contact, improves the consistency and pass rate of sintering product.

Description

Technical Field

[0001] This utility model belongs to the field of sintering furnace and jar technology, and more specifically, relates to a furnace and jar structure. Background Technology

[0002] In the field of industrial sintering production, the furnace jar, as a core component of the sintering furnace, plays a crucial role in providing a closed sintering space for materials and ensuring the stable progress of the sintering process. Currently, traditional furnace jar structures mostly adopt a single cylindrical cavity design, which is rotated and mounted via shafts at both ends. This rotation allows the materials inside the cavity to be turned over to a certain extent, ensuring uniform heating. However, with the increasing demand for high-precision sintering, traditional furnace jars have gradually revealed many technical defects in practical applications, making it difficult to meet the stringent requirements of modern industrial production for sintering quality, efficiency, and environmental protection.

[0003] First, regarding gas flow and heat exchange efficiency, while traditional furnaces can achieve basic atmosphere control through their inlet and outlet channels, localized stagnation of gas after entering the sintering chamber can easily occur, leading to uneven distribution of atmosphere concentration and temperature in different areas of the sintering chamber. This is especially problematic when processing granular or powdered materials, where poor airflow penetration in material accumulation areas can result in incomplete sintering reactions and the generation of impurities due to excessively high local temperatures or atmosphere imbalances, severely impacting the performance of the final product. Second, in terms of material agitation and heating uniformity control, traditional furnaces rely solely on their own rotation to agitate the material. Influenced by the material's own weight, friction, and the smoothness of the inner wall of the furnace, the material is prone to sliding against the wall or localized accumulation, making it difficult to achieve comprehensive and uniform mixing. Utility Model Content

[0004] The purpose of this invention is to provide a furnace structure that addresses the problems of uneven atmosphere concentration and temperature distribution in different areas of the sintering chamber of existing furnaces, as well as the difficulty in achieving comprehensive and uniform mixing of materials.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a furnace structure, comprising: The tank body has a sintering chamber inside. One end of the tank body is axially provided with a first shaft extending outward, and the other end of the tank body is axially provided with a second shaft extending outward. The first shaft body has an air inlet channel communicating with the sintering chamber, and the second shaft body has an exhaust channel communicating with the sintering chamber. The tank body is rotatably installed in the sintering furnace by means of the first shaft body and the second shaft body. Multiple heat-conducting and dust-proof plates are circumferentially spaced on the inner wall of the sintering chamber. The heat-conducting and dust-proof plates extend axially along the sintering chamber and are radially inclined along the sintering chamber, with their inclination direction opposite to the rotation direction of the tank.

[0006] In one possible implementation, the thermally conductive dustproof plate extends radially toward the sintering chamber by a length greater than half the radius of the sintering chamber.

[0007] In one possible implementation, each of the heat-conducting dustproof plates has multiple welding points between itself and the inner wall of the sintering chamber, and the multiple welding points are arranged at intervals along the axial direction of the sintering chamber.

[0008] In one possible implementation, one end of the tank has an air intake arc surface, the first shaft is axially mounted on the outside of the air intake arc surface, the other end of the tank has an exhaust cone surface, the second shaft is axially mounted on the outside of the exhaust cone surface, the interior of the air intake arc surface forms an inner arc surface, the interior of the exhaust cone surface forms an inner cone surface, and the two ends of the heat-conducting dustproof plate extend to the inner arc surface and the inner cone surface, respectively.

[0009] In one possible implementation, an air inlet pipe is provided at the end of the first shaft away from the tank, the air inlet pipe is connected to the air inlet channel, and a transmission gear is provided on the side of the first shaft away from the tank.

[0010] In one possible implementation, a hollow cavity is axially formed in the second shaft, and an exhaust pipe is axially arranged in the hollow cavity. The exhaust passage is located inside the exhaust pipe. A first end of the exhaust pipe enters the sintering chamber, and a second end of the exhaust pipe exits the second shaft and extends to a side away from the tank.

[0011] In one possible implementation, the first end of the exhaust pipe is provided with a dust cap and a dust-reducing plate, the dust cap being located in the sintering chamber, the dust-reducing plate being located in the hollow chamber, and an exhaust gap connecting the exhaust channel is formed between the dust cap and the dust-reducing plate.

[0012] In one possible implementation, the dust-collecting plate is disposed on the outer wall circumferentially on the side of the exhaust pipe near the sintering chamber. The side of the dust-collecting plate facing the sintering chamber forms a first dust-collecting surface, and the dust-blocking cap forms a second dust-collecting surface on the side away from the sintering chamber. The gas in the sintering chamber is deflected back to the second dust-collecting surface through the first dust-collecting surface and then discharged through the exhaust channel. The first dust-collecting surface and the second dust-collecting surface can block suspended impurities in the gas to purify the gas discharged from the exhaust pipe.

[0013] In one possible implementation, the dust cap includes a dust baffle plate and an outer peripheral plate. The dust baffle plate is spaced apart on the side of the exhaust pipe body near the sintering chamber. The outer peripheral plate is disposed circumferentially on the dust baffle plate and extends outward at an angle toward the exhaust pipe and covers the outer periphery of the exhaust pipe. The second dust-reducing surface is formed on the inner side of the dust baffle plate.

[0014] In one possible implementation, the dust-collecting plate gradually tilts towards one side of the sintering chamber from the inside out.

[0015] The beneficial effects of the furnace structure provided by this utility model are as follows: Compared with the prior art, the heat-conducting dustproof plate extends axially along the sintering chamber and is radially inclined. It can form a guiding channel after the gas enters from the first shaft air inlet channel. The airflow is guided to diffuse evenly along the axial direction through the gaps between adjacent heat-conducting dustproof plates. With the help of the tilt angle opposite to the direction of tank rotation, it generates a stirring auxiliary force on the airflow when the tank rotates, breaking the tendency of the airflow to stagnate at the top or bottom of the chamber and promoting the gas to form a spiral circulation flow. At the same time, the tilt design can also lift and disperse the material upward when the tank rotates, avoiding the accumulation of material and blocking the airflow channel. Together with the second shaft exhaust channel, it forms an efficient air intake-circulation-exhaust loop, accelerates atmosphere renewal, ensures that the atmosphere concentration difference in each area is controlled within a very small range, and solves the problem of insufficient sintering reaction caused by local atmosphere imbalance.

[0016] Furthermore, the heat-conducting dustproof plate, being directly fixed to the inner wall of the tank and possessing excellent thermal conductivity, can quickly transfer the heat from the furnace body received by the outer wall of the tank to itself. Its axially extended and circumferentially spaced structure forms multiple auxiliary heat-conducting units within the chamber, significantly increasing the contact area between heat and materials. This avoids the localized high-temperature and regional low-temperature differences that traditional structures rely solely on the inner wall of the tank for heat conduction. Simultaneously, the spiral airflow guided by the dustproof plate can also act as a temperature carrier, rapidly transferring heat to the low-temperature region. Combined with the material being tumbled by the plate when the tank rotates, this ensures full contact between the material and the high-temperature airflow and the heat-conducting plate, shortening the temperature equilibrium time and resolving the problem of uneven material sintering caused by temperature inconsistencies.

[0017] In this design, the inclined heat-conducting and dust-proof plate, which rotates in the opposite direction to the tank, generates a reverse resistance force on the material as the tank rotates. For example, when the tank rotates clockwise, the upper end of the plate tilts counterclockwise, which can block and lift the material rotating with the tank, allowing the material to fall to the bottom of the chamber under gravity. This breaks the tendency of the material to slide against the wall and achieves forced dispersion. At the same time, the circumferential spacing and axial extension of the plate design can also create a three-dimensional turning space in the chamber. The circumferential distribution avoids the accumulation of material, and the axial extension ensures that the material is turned evenly along the length of the chamber. Furthermore, the tilt angle of the plate can be adjusted according to the particle size and viscosity of the material to further adapt to different mixing requirements. Ultimately, this ensures that all parts of the material are in full contact with the atmosphere and heat, improving the consistency and pass rate of the sintered products. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 An axial sectional view of a furnace tank structure provided by this utility model; Figure 2 for Figure 1 Sectional view along the middle AA; Figure 3 for Figure 1 A magnified view of a section at point I.

[0020] In the diagram: 1. Tank body; 2. First shaft; 3. Second shaft; 4. Inlet channel; 5. Exhaust channel; 6. Heat-conducting dustproof plate; 7. Welding point; 8. Inlet arc end; 9. Exhaust cone end; 10. Inlet pipe; 11. Transmission gear; 12. Exhaust pipe; 13. Dust baffle; 14. Outer plate; 15. Dust suppression plate; 16. Mounting frame. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] Unless otherwise explicitly specified, the use of terms such as "first," "second," or "third" is intended to distinguish different objects, not to describe a specific order.

[0023] Unless otherwise expressly defined, the use of directional terms such as “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “back,” “left,” “right,” “clockwise,” “counterclockwise,” “high,” and “low” to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of the present invention.

[0024] Please see Figures 1 to 3 The present invention provides a furnace structure. The furnace structure includes a tank body 1 and multiple heat-conducting and dust-proof plates 6. A sintering chamber is formed inside the tank body 1. A first shaft 2 extending outwards is axially arranged at one end of the tank body 1, and a second shaft 3 extending outwards is axially arranged at the other end of the tank body 1. An air inlet channel 4 communicating with the sintering chamber is axially opened on the first shaft 2, and an exhaust channel 5 communicating with the sintering chamber is axially opened on the second shaft 3. The tank body 1 is rotatably mounted inside the sintering furnace via the first shaft 2 and the second shaft 3. Multiple heat-conducting and dust-proof plates 6 are circumferentially spaced on the inner wall of the sintering chamber. The heat-conducting and dust-proof plates 6 extend axially along the sintering chamber and are radially inclined along the sintering chamber, with their inclination direction opposite to the rotation direction of the tank body 1.

[0025] The furnace structure provided by this utility model, compared with the prior art, features a heat-conducting and dust-proof plate 6 that extends axially along the sintering chamber and is radially inclined. This arrangement forms a guiding channel after the gas enters from the inlet channel 4 of the first shaft 2. The gas flow is guided to diffuse evenly along the axial direction through the gaps between adjacent heat-conducting and dust-proof plates 6. With the help of the tilt angle opposite to the rotation direction of the tank 1, the gas flow is agitated when the tank 1 rotates, breaking the tendency of the gas flow to stagnate at the top or bottom of the chamber and promoting the gas to form a spiral circulation flow. At the same time, the tilt design can also lift and disperse the material when the tank 1 rotates, avoiding the accumulation of material and blocking the airflow channel. Together with the exhaust channel 5 of the second shaft 3, it forms an efficient loop of intake-circulation-exhaust, accelerating atmosphere renewal and ensuring that the atmosphere concentration difference in each area is controlled within a very small range, thus solving the problem of insufficient sintering reaction caused by local atmosphere imbalance.

[0026] Furthermore, the heat-conducting dustproof plate 6, being directly fixed to the inner wall of the tank 1 and possessing excellent thermal conductivity, can quickly transfer the furnace heat received from the outer wall of the tank 1 to itself. Its axially extended and circumferentially spaced structure forms multiple auxiliary heat-conducting units within the chamber, significantly increasing the contact area between heat and materials. This avoids the local high-temperature-region low-temperature differences that traditional structures rely solely on the inner wall of the tank 1 for heat conduction. Simultaneously, the spiral airflow guided by the dustproof plate can also act as a temperature carrier, rapidly transferring heat to the low-temperature region. Combined with the material being tumbled by the plate when the tank 1 rotates, the material fully contacts the high-temperature airflow and the heat-conducting plate, shortening the temperature equilibrium time and solving the problem of material sintering differences caused by uneven temperature.

[0027] In this design, the inclined heat-conducting and dust-proof plate 6, which rotates in the opposite direction to the tank 1, can generate a reverse blocking force on the material when the tank 1 rotates. For example, when the tank 1 rotates clockwise, the upper end of the plate tilts counterclockwise, which can block and lift the material rotating with the tank 1, allowing the material to fall to the bottom of the chamber under the action of gravity, breaking the tendency of sliding against the wall and achieving forced dispersion. At the same time, the design of the circumferential spacing and axial extension of the plate can also create a three-dimensional turning space in the chamber. The circumferential distribution avoids the concentrated accumulation of material, and the axial extension ensures that the material is turned evenly in the length of the chamber. Moreover, the tilt angle of the plate can be adjusted according to the particle size and viscosity of the material to further adapt to different mixing requirements. Ultimately, it ensures that all parts of the material are in full contact with the atmosphere and heat, improving the consistency and pass rate of the sintered products.

[0028] Please see Figure 2 The heat-conducting dustproof plate 6 extends radially toward the sintering chamber for a length greater than half the radius of the sintering chamber, increasing the heat-conducting area and transferring heat more fully to the central area of ​​the chamber, alleviating the temperature imbalance between the edge and the center. At the same time, it enables forced agitation and dispersion of materials throughout the entire chamber, avoiding uneven sintering caused by insufficient agitation in certain areas and improving overall mixing uniformity.

[0029] Please see Figures 1 to 2 Each heat-conducting dustproof plate 6 has multiple welding points 7 between itself and the inner wall of the sintering chamber. These welding points 7 are arranged at intervals along the axial direction of the sintering chamber, which can significantly improve the structural stability and load-bearing capacity. By uniformly fixing the dustproof plate to the inner wall of the tank 1, the stress concentration at a single point or a few welding points is avoided. Under the conditions of tank 1 rotation, material impact and high-temperature sintering, the external force and thermal stress borne by the dustproof plate are effectively dispersed, preventing the plate from deforming or falling off, ensuring a long-term stable connection between the two and guaranteeing the reliability of equipment operation.

[0030] Please see Figure 1One end of the tank body 1 has an air inlet arc end 8, and a first shaft 2 is axially mounted on the outside of the air inlet arc end 8. The other end of the tank body 1 has an exhaust cone end 9, and a second shaft 3 is axially mounted on the outside of the exhaust cone end 9. The interior of the air inlet arc end 8 forms an inner arc surface, and the interior of the exhaust cone end 9 forms an inner cone surface. The two ends of the heat-conducting dustproof plate 6 extend to the inner arc surface and the inner cone surface, respectively. The inner arc surface and the inner cone surface can buffer and guide the gas entering through the air inlet channel 4, avoiding local turbulence caused by the gas directly impacting the end of the chamber. The dustproof plate extending accordingly can cover the airflow guidance range to both ends of the chamber, eliminating the airflow dead angle that is easy to generate at the end of the traditional straight wall. Combined with the conical structure of the exhaust cone end 9, it accelerates the airflow to converge towards the exhaust channel 5. In addition, the arc and cone surface structures at both ends of the chamber can reduce the accumulation of materials at the ends, and the dustproof plate extending accordingly can generate a turning effect on the materials near the ends.

[0031] Please see Figure 1 An air inlet pipe 10 is provided at the end of the first shaft 2 away from the tank 1, and the air inlet pipe 10 connects to the air inlet channel 4. A transmission gear 11 is provided on the side of the first shaft 2 away from the tank 1. The independent setting of the air inlet pipe 10 enables convenient and reliable connection with an external air source, avoiding direct contact between the air source pipeline and the rotating tank 1. Gas is delivered to the rotating air inlet channel 4 through the fixed air inlet pipe 10, effectively reducing the risk of leakage during gas delivery. At the same time, it ensures that the atmosphere required for sintering (such as protective gas) can be continuously and stably introduced into the sintering chamber, providing a stable environmental basis for material sintering. In addition, the transmission gear 11 is located on the side of the first shaft 2 away from the tank 1. It can provide a stable power input for the rotation of the tank 1 by meshing with an external drive device (such as a motor gear), ensuring that the tank 1 rotates at a preset speed at a uniform speed, ensuring the regularity of material tumbling and airflow circulation. It can also avoid the transmission components being close to the high-temperature area of ​​the tank 1, reducing the impact of high temperature on the gear transmission accuracy and service life, and reducing the frequency of equipment maintenance.

[0032] Please see Figure 3 A hollow cavity is formed axially in the second shaft 3, and an exhaust pipe 12 is axially arranged inside the hollow cavity. An exhaust passage 5 is located inside the exhaust pipe 12. The first end of the exhaust pipe 12 enters the sintering chamber, and the second end of the exhaust pipe 12 exits the second shaft 3 and extends to the side away from the tank 1. The exhaust pipe 12 is positioned within the hollow cavity of the second shaft 3 to prevent interference with the exhaust passage 5 when the second shaft 3 rotates, ensuring that exhaust gas is continuously and smoothly discharged along the exhaust pipe 12. The exhaust pipe 12 extends to the side away from the tank 1, facilitating precise connection with external exhaust gas treatment devices and preventing exhaust gas from spreading around the equipment.

[0033] Please see Figure 3The first end of the exhaust pipe 12 is equipped with a dust cap and a dust settling plate 15. The dust cap is located inside the sintering chamber, and the dust settling plate 15 is located inside the hollow chamber. An exhaust gap is formed between the dust cap and the dust settling plate 15, which connects to the exhaust channel 5. The dust cap located inside the sintering chamber can directly block material particles or dust from directly impacting the exhaust pipe 12 opening with the airflow, preventing large dust particles from entering the exhaust channel 5 and causing blockage. Fine dust entering the exhaust gap will settle as it flows through the dust settling plate 15 inside the hollow chamber due to the reduced airflow speed and changed direction, further intercepting the dust. This dual protection can significantly reduce the amount of dust entering the exhaust pipe 12 and subsequent waste gas treatment devices, reducing the risk of pipe blockage and equipment wear.

[0034] Please see Figure 3 The dust-collecting plate 15 is disposed on the outer wall circumferentially on the side of the exhaust pipe 12 near the sintering chamber. The side of the dust-collecting plate 15 facing the sintering chamber forms a first dust-collecting surface, and the side of the dust-blocking cap facing away from the sintering chamber forms a second dust-collecting surface. The gas in the sintering chamber is deflected back through the first dust-collecting surface to the second dust-collecting surface and then discharged through the exhaust channel 5. The first and second dust-collecting surfaces can block suspended impurities in the gas to purify the gas discharged from the exhaust pipe 12. The gas in the sintering chamber needs to be deflected back through the first dust-collecting surface to the second dust-collecting surface before entering the exhaust channel 5. This deflected flow can forcibly change the airflow direction and reduce the airflow speed, so that suspended dust, material particles and other impurities in the gas adhere to the first and second dust-collecting surfaces respectively due to inertia and gravity. The double interception effectively reduces the amount of impurities entering the interior of the exhaust pipe 12, avoids blockage of the exhaust channel 5, and at the same time reduces the filtration pressure of the subsequent waste gas treatment device and reduces the frequency of equipment maintenance. In addition, the circumferential layout of the first dust-collecting surface and the reverse setting of the second dust-collecting surface can intercept impurities without excessively obstructing gas flow, ensuring that the exhaust channel 5 remains unobstructed and maintaining stable gas pressure in the sintering chamber.

[0035] Please see Figure 3The dust cap includes a dust baffle plate 13 and an outer peripheral plate 14. The dust baffle plate 13 is spaced apart on the side of the exhaust pipe 12 body near the sintering chamber. The outer peripheral plate 14 is disposed around the dust baffle plate 13, extending outward at an angle towards the exhaust pipe 12 and covering the outer periphery of the exhaust pipe 12. A second dust-collecting surface is formed on the inner side of the dust baffle plate 13. The dust baffle plate 13 is spaced apart on the side of the exhaust pipe 12 near the sintering chamber. The second dust-collecting surface formed on its inner side can directly receive the airflow deflected by the first dust-collecting surface. By utilizing the inertia of the airflow when in contact, it efficiently adsorbs suspended impurities in the gas. At the same time, the spaced design can retain gas flow space while intercepting impurities, avoiding obstruction of exhaust. The outer plate 14 is arranged around the dust baffle 13 and extends outward at an angle toward the exhaust pipe 12, forming a hood-like protective structure that can block material particles or large dust particles splashed in the sintering chamber from directly impacting the exhaust pipe 12. It can also guide the airflow to converge in the gap between the dust baffle 13 and the exhaust pipe 12 through the tilt angle, ensuring that the gas flows in an orderly manner along the path of the first dust-falling surface - the second dust-falling surface - the exhaust channel 5, and avoiding the escape of impurities caused by airflow turbulence.

[0036] Please see Figure 3 The dust collection plate 15 gradually tilts towards the sintering chamber from the inside out and is installed on the outer periphery of the exhaust pipe 12 via the mounting bracket 16. This tilt angle naturally guides the gas in the sintering chamber to flow towards the inner side of the dust collection plate 15 (closer to the exhaust pipe 12), allowing the gas to more smoothly contact the first dust collection surface and then return to the second dust collection surface of the dust cap. This avoids flow turbulence caused by airflow impacting the outer side of the dust collection plate 15, ensuring the unobstructed flow of the exhaust channel 5. In addition, the tilt direction is adapted to the gas flow direction. By utilizing the impact force and gravity when the airflow contacts the first dust collection surface, suspended impurities can more easily adhere to the tilted dust collection surface, reducing the probability of impurities escaping with the airflow. At the same time, the tilted structure also facilitates the natural detachment or quick cleaning of impurities during later maintenance, reducing maintenance difficulty.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A furnace structure, characterized in that, include: A tank (1) has a sintering chamber inside. One end of the tank (1) is axially provided with a first shaft (2) extending outward, and the other end of the tank (1) is axially provided with a second shaft (3) extending outward. The first shaft (2) has an air inlet channel (4) communicating with the sintering chamber, and the second shaft (3) has an exhaust channel (5) communicating with the sintering chamber. The tank (1) is rotatably installed in the sintering furnace by means of the first shaft (2) and the second shaft (3). Multiple heat-conducting and dust-proof plates (6) are circumferentially spaced on the inner wall of the sintering chamber. The heat-conducting and dust-proof plates (6) extend axially along the sintering chamber and are radially inclined along the sintering chamber, with their inclination direction opposite to the rotation direction of the tank (1).

2. The furnace structure as described in claim 1, characterized in that, The length of the heat-conducting dustproof plate (6) extending radially toward the sintering chamber is greater than half the radius of the sintering chamber.

3. The furnace structure as described in claim 1, characterized in that, Each of the heat-conducting dustproof plates (6) has multiple welding points (7) between it and the inner wall of the sintering chamber, and the multiple welding points (7) are arranged at intervals along the axial direction of the sintering chamber.

4. The furnace structure as described in claim 1, characterized in that, One end of the tank (1) has an air intake arc end (8), the first shaft (2) is axially installed on the outside of the air intake arc end (8), the other end of the tank (1) has an exhaust cone end (9), the second shaft (3) is axially installed on the outside of the exhaust cone end (9), the inside of the air intake arc end (8) forms an inner arc surface, the inside of the exhaust cone end (9) forms an inner cone surface, and the two ends of the heat-conducting dustproof plate (6) extend to the inner arc surface and the inner cone surface respectively.

5. A furnace structure as described in claim 1, characterized in that, An air inlet pipe (10) is provided at the end of the first shaft (2) away from the tank (1), the air inlet pipe (10) is connected to the air inlet channel (4), and a transmission gear (11) is provided on the side of the first shaft (2) away from the tank (1).

6. The furnace structure as described in claim 1, characterized in that, The second shaft (3) has an axially formed hollow cavity, and an exhaust pipe (12) is axially arranged in the hollow cavity. The exhaust channel (5) is located in the exhaust pipe (12). The first end of the exhaust pipe (12) enters the sintering cavity, and the second end of the exhaust pipe (12) exits the second shaft (3) and extends to the side away from the tank (1).

7. A furnace pot structure as described in claim 6, characterized in that, The first end of the exhaust pipe (12) is provided with a dust cap and a dust-reducing plate (15). The dust cap is located in the sintering chamber, and the dust-reducing plate (15) is located in the hollow chamber. An exhaust gap is formed between the dust cap and the dust-reducing plate (15) to communicate with the exhaust channel (5).

8. A furnace structure as described in claim 7, characterized in that, The dust-reducing plate (15) is disposed on the outer wall circumferentially on the side of the exhaust pipe (12) near the sintering chamber. The side of the dust-reducing plate (15) facing the sintering chamber forms a first dust-reducing surface, and the side of the dust-blocking cap facing away from the sintering chamber forms a second dust-reducing surface. The gas in the sintering chamber is deflected back to the second dust-reducing surface through the first dust-reducing surface and then discharged through the exhaust channel (5). The first dust-reducing surface and the second dust-reducing surface can block suspended impurities in the gas to purify the gas discharged from the exhaust pipe (12).

9. A furnace structure as described in claim 8, characterized in that, The dust cap includes a dust baffle plate (13) and an outer peripheral plate (14). The dust baffle plate (13) is spaced apart on the side of the exhaust pipe (12) body near the sintering chamber. The outer peripheral plate (14) is disposed around the dust baffle plate (13). The outer peripheral plate (14) extends outward at an angle toward the exhaust pipe (12) and covers the outer periphery of the exhaust pipe (12). The second dust-reducing surface is formed on the inner side of the dust baffle plate (13).

10. A furnace structure as described in claim 8, characterized in that, The dust-collecting plate (15) gradually tilts towards the sintering chamber from the inside out.

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