Multi-purpose furnace controlled atmosphere carburizing device

Abstract

This invention discloses a multi-purpose furnace controlled atmosphere carburizing device, applied in the field of heat treatment equipment technology. By setting up a distribution mechanism, the material frame containing the workpiece can be placed on a supporting component during heat treatment. A drive motor simultaneously drives a distribution fan, a circulation component, and the supporting component to rotate. The distribution fan accelerates airflow within the furnace, improving carburizing efficiency. The circulation component draws heat from the top of the furnace to the bottom and then into the furnace liner, concentrating heat inside the liner. Combined with the workpiece rotation, this ensures uniform heating of the workpiece, improving heat treatment quality. Furthermore, the circular furnace chamber design, along with the internal distribution mechanism, significantly improves aerodynamics, furnace temperature and atmosphere uniformity, and prevents carbon buildup in dead corners. Therefore, compared to a square furnace, the furnace body has a reduced heat dissipation surface area, resulting in significant energy savings.

Description

Technical Field

[0001] This invention belongs to the technical field of heat treatment equipment, and specifically relates to a controlled atmosphere carburizing device for a multi-purpose furnace. Background Technology

[0002] Carburizing is an important metal surface treatment method. After carburizing, metal materials with high hardness and wear resistance can be obtained. Because the temperature of carburizing heat treatment is extremely high, the common carburizing process is usually carried out in a multi-purpose furnace. However, conventional multi-purpose furnaces are mostly box-type structures, and there are dead zones in the furnace temperature and atmosphere, which leads to carbon accumulation in the dead zone and poor energy saving effect.

[0003] Furthermore, in conventional multi-purpose furnaces, the workpieces are mostly placed in a fixed position, making it difficult to heat the workpieces evenly and to distribute the atmosphere evenly within the furnace. This can easily lead to localized excessively high or low temperatures during carburizing, thereby reducing the heat treatment quality of the workpieces.

[0004] Combining the two issues mentioned above, it becomes clear that existing carburizing equipment on the market cannot simultaneously avoid the problems raised, thus failing to achieve the desired effect. Therefore, we propose a multi-purpose furnace controlled atmosphere carburizing device that can ensure uniform atmosphere distribution, uniform workpiece heating, avoid dead zones, and improve energy efficiency. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing multi-purpose furnace controlled atmosphere carburizing devices. Its advantages include the use of a distribution mechanism that allows the workpiece-bearing frame to be placed on a support assembly during heat treatment. A drive motor simultaneously rotates the distribution fan, circulation assembly, and support assembly. The distribution fan accelerates airflow within the furnace, improving carburizing efficiency. The circulation assembly draws heat from the top of the furnace to the bottom, then into the furnace liner, concentrating heat inside the liner. This, combined with the workpiece's rotation, ensures uniform heating, improving heat treatment quality. Furthermore, the circular furnace chamber design, along with the internal distribution mechanism, significantly improves aerodynamics, resulting in greater temperature and atmosphere uniformity and preventing carbon buildup in dead zones. Therefore, compared to square furnaces, the furnace body has a smaller heat dissipation surface area, leading to significant energy savings.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a multi-purpose furnace controlled atmosphere carburizing device, including a furnace body and a distribution mechanism, wherein the furnace body includes a furnace shell, a furnace cover is bolted to the top of the furnace shell, and a lifting and rotating element is bolted to the top of the furnace cover, the lifting and rotating element is bolted to the furnace shell on the side near the furnace shell, a furnace lining is provided inside the furnace shell, a heating element is provided on the inner wall of the furnace lining, and the distribution mechanism is provided inside the furnace lining;

[0007] The distribution mechanism includes a furnace tank, which is bolted to the inside of the furnace lining. A drive motor is bolted to the top of the furnace cover, and a connecting assembly is bolted to the output end of the drive motor. The bottom of the connecting assembly extends into the inside of the furnace lining and is fitted with a shaft. A distribution fan and a circulation assembly are respectively fitted to the top and bottom of the shaft surface. The circulation assembly is bolted to the bottom inside the furnace tank, and the bottom of the circulation assembly is bolted to the inner wall of the furnace lining. Two sets of bearing assemblies are fitted to the surface of the shaft, and the two bearing assemblies are staggered on the surface of the shaft.

[0008] By adopting the above technical solution and setting up a distribution mechanism, the material frame containing the workpiece can be placed on the bearing component during heat treatment. The distribution fan, circulation component, and bearing component are driven to rotate simultaneously by a drive motor. The distribution fan can accelerate the airflow speed in the furnace and improve the carburizing efficiency. The circulation component can draw heat from the top of the furnace to the bottom and send it into the furnace liner, thereby concentrating the heat inside the furnace liner. Combined with the rotation of the workpiece, the workpiece is heated evenly, improving the heat treatment quality. Furthermore, by adopting a circular furnace design and setting up a distribution mechanism inside the furnace, the aerodynamics inside the furnace is greatly improved, and the uniformity of furnace temperature and atmosphere is greatly enhanced, avoiding carbon accumulation in dead corners inside the furnace. Therefore, compared with a square furnace, the heat dissipation surface area of ​​the furnace body is reduced, resulting in significant energy-saving effects.

[0009] The invention is further configured such that: the circulation assembly includes a fixed ring, the fixed ring is bolted to the bottom of the inner wall of the furnace, and a support plate is bolted to the bottom of the fixed ring in an annular shape; the bottom of the support plate is bolted to the inner wall of the furnace lining; a cross plate is provided at the bottom of the fixed ring, and the side of the cross plate near the support plate is bolted to the support plate; the bottom of the shaft is rotatably connected to the cross plate, and a circulation fan is sleeved on the surface of the shaft; the circulation fan is rotatably connected inside the fixed ring.

[0010] By adopting the above technical solution, a circulation component is set up, and the rotation of the shaft causes the circulation fan to generate suction, thereby drawing in the heat from the bottom of the furnace and sending it into the interior. Therefore, under this action, the heat from the top of the furnace can be supplemented to the bottom of the furnace before entering the interior, thus achieving the effect of circulation blowing. This can concentrate the heat in the furnace and make full contact with the workpiece, thereby improving the heat treatment effect of the workpiece.

[0011] The present invention is further configured such that: the bearing assembly includes a connecting disc, the connecting disc is sleeved on the surface of the shaft, and a bearing plate is annularly bolted to the surface of the connecting disc; a reinforcing rib is bolted to the bottom of the bearing plate, and the side of the reinforcing rib near the connecting disc is bolted to the connecting disc; a fixing plate and a sliding plate are respectively bolted to the top of the bearing plate; a locking member is provided inside the bearing plate, and the locking member is bolted to the sliding plate.

[0012] By adopting the above technical solution, by setting up a bearing component, the material frame containing the workpiece can be placed on the bearing plate and moved inside it by the sliding plate. By locking it with the locking component, the material frame can be restricted between the fixed plate and the sliding plate, thereby fixing the position of the material frame and allowing the material frame to rotate with the shaft.

[0013] The present invention is further configured such that: the sliding plate is T-shaped, and a slider is bolted to the side of the sliding plate near the inner wall of the support plate, and the surface of the slider slides in contact with the inner wall of the support plate.

[0014] By adopting the above technical solution, and by setting the sliding plate in a T-shape, and attaching a slider to the side of the sliding plate near the inner wall of the bearing plate, the movement trajectory of the sliding plate can be restricted, and its movement can be made smooth.

[0015] The invention is further configured such that: the locking member includes a ratchet rack, the ratchet rack is bolted to the bottom of the sliding plate, and a movable plate is slidably connected to the bottom of the inner wall of the bearing plate; the top of the movable plate is rotatably provided with ratchet teeth via a pivot pin, the ratchet teeth cooperate with the ratchet rack; a return spring is bolted to the top of the movable plate, and the top of the return spring is bolted to the ratchet teeth; a connecting rod passes through the interior of the movable plate, and the connecting rod is externally connected to the movable device.

[0016] By adopting the above technical solution and setting a locking component, when the sliding plate moves, the spring on the left side of the ratchet tooth allows the ratchet tooth to return to its original position after being pressed by the ratchet rack. This allows the ratchet rack to lock into the ratchet tooth at any position, thus achieving the effect of locking the position of the sliding plate. When it is necessary to release the position lock of the sliding plate, it can be moved by a device connected to the external end of the connecting rod, which will move the sliding plate and separate the ratchet tooth from the ratchet rack, thereby releasing the position lock of the sliding plate.

[0017] The invention is further configured such that: a limiting block is bolted to the bottom of the movable plate, and the surface of the limiting block slides in contact with the inner wall of the bearing plate; a baffle structure is bolted to the top of the movable plate and is used in conjunction with a ratchet tooth.

[0018] By adopting the above technical solution, the movement trajectory of the moving plate can be restricted by setting a limiting block. The baffle structure can prevent the ratchet from rotating in the opposite direction under external force, thus preventing the ratchet from losing its limiting function with the ratchet rack.

[0019] The present invention is further configured such that: the connecting assembly includes a shaft tube, the shaft tube is bolted to the output end of the drive motor and sleeved on the surface of the shaft rod, a sealing baffle is sleeved at the bottom of the surface of the shaft tube, protective shells are bolted to both sides of the shaft tube, an electric telescopic rod is bolted inside the protective shell, and an insert is bolted to the side of the electric telescopic rod near the shaft rod, the side of the insert near the shaft rod penetrating the interior of the shaft tube and extending into the interior of the shaft rod.

[0020] By adopting the above technical solution, by setting up a connecting component, the shaft tube can be sleeved on the surface of the shaft rod, and the insertion block can be inserted into the interior of the shaft rod by extending the electric telescopic rod, thereby realizing the connection between the shaft tube and the shaft rod, which facilitates the drive motor to drive the shaft rod to rotate. At the same time, the retraction of the electric telescopic rod can separate the insertion block from the shaft rod, thereby facilitating the separation of the furnace cover from the furnace shell.

[0021] The present invention is further configured such that: slots for use with insert blocks are provided on both sides of the shaft, key blocks are welded on the front and rear sides of the inner wall of the shaft tube, and keyways for use with key blocks are provided on the front and rear sides of the shaft.

[0022] By adopting the above technical solution, the connection position of the shaft and the shaft tube can be restricted by setting key blocks and keyways, thereby facilitating the connection between the insert block and the shaft.

[0023] The present invention is further configured such that: the bottom of the furnace tank is annularly welded with a support rod, and the bottom of the support rod is bolted to the inner wall of the furnace lining; the inner wall of the furnace tank is smoothly wavy.

[0024] By adopting the above technical solution and setting support rods, not only can the furnace tank be fixed, but a certain cavity can also be formed between the furnace tank and the furnace lining. This facilitates the circulation of heat by the circulation components. Furthermore, the smooth, wavy inner wall of the furnace tank can slow down the flow rate of heat within the furnace tank, allowing the heat to make full contact with the workpiece.

[0025] The present invention is further configured such that: the inner wall of the furnace lining is provided with a plurality of wire-supporting bricks, and the heating element is located on top of the wire-supporting bricks.

[0026] By adopting the above technical solution and setting up wire-supporting bricks, the heating element can be easily fixed.

[0027] In summary, the present invention has the following beneficial effects:

[0028] 1. By setting up a distribution mechanism, during heat treatment, the material frame containing the workpiece can be placed on the bearing component, and the distribution fan, circulation component and bearing component can be driven to rotate simultaneously by the drive motor. The distribution fan can increase the air flow speed in the furnace and improve the carburizing efficiency, while the circulation component can draw the heat from the top of the furnace to the bottom and send it into the furnace tank, so that the heat is concentrated inside the furnace tank. Combined with the rotation of the workpiece, the workpiece is heated evenly, thus improving the heat treatment quality.

[0029] 2. By adopting a circular furnace design and setting up an internal distribution mechanism, the aerodynamics of the furnace is greatly improved, the furnace temperature and atmosphere uniformity are greatly enhanced, and carbon accumulation in dead corners of the furnace is avoided. Therefore, compared with a square furnace, the heat dissipation surface area of ​​the furnace body is reduced, resulting in significant energy-saving effects. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram showing the connection between the furnace body and the distribution mechanism of the present invention;

[0032] Figure 3 This is a schematic diagram of the distribution mechanism structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the loop component structure of the present invention;

[0034] Figure 5 This is a cross-sectional schematic diagram of the load-bearing component of the present invention;

[0035] Figure 6 This is the invention Figure 5 Enlarged view of point A in the middle;

[0036] Figure 7 This is a top view of the connection component of the present invention;

[0037] Figure 8 This is the invention Figure 3 Enlarged diagram of point B in the middle.

[0038] Reference numerals: 1. Furnace body; 11. Furnace shell; 12. Furnace cover; 13. Lifting and rotating element; 14. Furnace lining; 15. Heating element; 2. Distribution mechanism; 21. Furnace tank; 22. Drive motor; 23. Connecting assembly; 231. Shaft tube; 232. Sealing baffle; 233. Protective shell; 234. Electric telescopic rod; 235. Insert block; 24. Shaft; 25. Distribution fan; 26. Circulation assembly; 261. Fixing ring; 262. Support plate; 26 3. Cross plate; 264. Circulating fan; 27. Bearing assembly; 271. Connecting plate; 272. Bearing plate; 273. Reinforcing rib; 274. Fixing plate; 275. Sliding plate; 276. Locking element; 2761. Ratchet; 2762. Moving plate; 2763. Ratchet tooth; 2764. Return spring; 2765. Connecting rod; 3. Slider; 4. Limiting block; 5. Slot; 6. Key block; 7. Keyway; 8. Support rod; 9. Wire support brick. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings.

[0040] refer to Figure 1-8 A multi-purpose furnace controlled atmosphere carburizing device includes a furnace body 1 and a distribution mechanism 2. The furnace body 1 includes a furnace shell 11. A furnace cover 12 is bolted to the top of the furnace shell 11, and a lifting and rotating element 13 is bolted to the top of the furnace cover 12. The lifting and rotating element 13 is bolted to the furnace shell 11 on the side close to the furnace shell 11. A furnace lining 14 is provided inside the furnace shell 11, and a heating element 15 is provided on the inner wall of the furnace lining 14. The distribution mechanism 2 is located inside the furnace lining 14.

[0041] The distribution mechanism 2 includes a furnace tank 21, which is bolted inside the furnace lining 14. A drive motor 22 is bolted to the top of the furnace cover 12, and a connecting assembly 23 is bolted to the output end of the drive motor 22. The bottom of the connecting assembly 23 extends into the interior of the furnace lining 14 and is fitted with a shaft 24. A distribution fan 25 and a circulation assembly 26 are respectively fitted to the top and bottom of the shaft 24. The circulation assembly 26 is bolted to the bottom of the interior of the furnace tank 21, and the bottom of the circulation assembly 26 is bolted to the inner wall of the furnace lining 14. Two sets of bearing assemblies 27 are fitted onto the surface of the shaft 24, and the two bearing assemblies 27 are staggered on the surface of the shaft 24. By setting up the distribution mechanism 2, during heat treatment, the material frame containing the workpiece can be placed on the bearing assembly 2. The furnace body 1 is equipped with a drive motor 22, which simultaneously drives the distribution fan 25, the circulation component 26, and the load-bearing component 27 to rotate. The distribution fan 25 can accelerate the airflow speed inside the furnace body 1, thereby improving the efficiency of carburizing. The circulation component 26 can draw heat from the top of the furnace body 1 to the bottom and send it into the furnace tank 21, thereby concentrating the heat inside the furnace tank 21. Combined with the rotation of the workpiece, the workpiece is heated evenly, improving the quality of heat treatment. Furthermore, by adopting a circular furnace chamber design and setting up the furnace distribution mechanism 2, the aerodynamics inside the furnace is greatly improved, and the uniformity of furnace temperature and atmosphere is greatly improved, avoiding carbon accumulation in dead corners inside the furnace. Therefore, compared with a square furnace, the heat dissipation surface area of ​​the furnace body 1 is reduced, resulting in significant energy-saving effects.

[0042] like Figure 4 As shown, the circulation assembly 26 includes a fixing ring 261, which is bolted to the bottom of the inner wall of the furnace lining 21. A support plate 262 is annularly bolted to the bottom of the fixing ring 261, and the bottom of the support plate 262 is bolted to the inner wall of the furnace lining 14. A cross plate 263 is provided at the bottom of the fixing ring 261, and the side of the cross plate 263 closest to the support plate 262 is bolted to the support plate 262. The bottom of the shaft 24 is rotatably connected to the cross plate 263, and a circulation fan 264 is sleeved on the surface of the shaft 24. The fan 264 is rotatably connected inside the fixed ring 261. By setting the circulation component 26, the rotation of the shaft 24 causes the circulation fan 264 to generate suction, thereby drawing in the heat from the bottom of the furnace tank 21 and sending it into its interior. Therefore, under this action, the heat from the top of the furnace can be supplemented to the bottom of the furnace tank 21 and then enters the interior of the furnace tank 21, thus achieving the effect of circulating blowing. Therefore, the heat can be concentrated in the furnace tank 21 and fully contacted with the workpiece, thereby improving the heat treatment effect of the workpiece.

[0043] like Figure 5As shown, the bearing assembly 27 includes a connecting plate 271, which is sleeved on the surface of the shaft 24. A bearing plate 272 is annularly bolted to the surface of the connecting plate 271. A reinforcing rib 273 is bolted to the bottom of the bearing plate 272, and the side of the reinforcing rib 273 near the connecting plate 271 is bolted to the connecting plate 271. A fixed plate 274 and a sliding plate 275 are bolted to the top of the bearing plate 272. A locking member 276 is provided inside the bearing plate 272 and is bolted to the sliding plate 275. By setting the bearing assembly 27, a material frame containing a workpiece can be placed on the bearing plate 272 and moved inside it by the sliding plate 275. By locking it with the locking member 276, the material frame can be restricted between the fixed plate 274 and the sliding plate 275, thereby fixing the position of the material frame and allowing the material frame to rotate with the shaft 24.

[0044] like Figure 8 As shown, the sliding plate 275 is T-shaped, and a slider 3 is bolted to the side of the sliding plate 275 near the inner wall of the support plate 272. The surface of the slider 3 slides in contact with the inner wall of the support plate 272. By setting the sliding plate 275 to a T-shape and bolting the slider 3 to the side of the sliding plate 275 near the inner wall of the support plate 272, the movement trajectory of the sliding plate 275 can be restricted, and its movement can be made smooth.

[0045] like Figure 6 As shown, the locking element 276 includes a ratchet rack 2761, which is bolted to the bottom of the sliding plate 275. A movable plate 2762 is slidably connected to the bottom of the inner wall of the bearing plate 272. A ratchet tooth 2763 is rotatably provided on the top of the movable plate 2762 via a pivot pin. The ratchet tooth 2763 cooperates with the ratchet rack 2761. A return spring 2764 is bolted to the top of the movable plate 2762, and the top of the return spring 2764 is bolted to the ratchet tooth 2763. A connecting rod 2765 passes through the interior of the movable plate 2762 and is externally connected to the moving device. The locking element 2766 is used to lock the device. 76. When the sliding plate 275 moves, the spring on the left side of the ratchet 2763 allows the ratchet 2763 to return to its original position after being pressed by the ratchet rack 2761. This allows the ratchet rack 2761 to engage with the ratchet 2763 at any position, thus achieving the effect of locking the position of the sliding plate 275. When it is necessary to release the position lock of the sliding plate 275, it can be moved by the device connected to the external end of the connecting rod 2765, which will also move the sliding plate 2762, thereby separating the ratchet 2763 from the ratchet rack 2761 and thus releasing the position lock of the sliding plate 275.

[0046] like Figure 6As shown, a limiting block 4 is bolted to the bottom of the movable plate 2762, and the surface of the limiting block 4 slides in contact with the inner wall of the bearing plate 272. A baffle structure is bolted to the top of the movable plate 2762 and works in conjunction with the ratchet 2763. By setting the limiting block 4, the movement trajectory of the movable plate 2762 can be restricted. The baffle structure prevents the ratchet 2763 from rotating in the opposite direction under external force, thus preventing the ratchet 2763 from losing its limiting function with the ratchet rack.

[0047] like Figure 7 As shown, the connecting assembly 23 includes a shaft tube 231, which is bolted to the output end of the drive motor 22 and sleeved on the surface of the shaft rod 24. A sealing baffle 232 is sleeved on the bottom of the surface of the shaft tube 231. Protective shells 233 are bolted to both sides of the shaft tube 231. An electric telescopic rod 234 is bolted inside the protective shell 233. An insert block 235 is bolted to the side of the electric telescopic rod 234 near the shaft rod 24. The side of the insert block 235 near the shaft rod 24 penetrates the inner part of the shaft tube 231. The part extends into the interior of the shaft 24. By setting the connecting component 23, the shaft tube 231 can be sleeved on the surface of the shaft 24, and the insertion block 235 can be inserted into the interior of the shaft 24 by extending the electric telescopic rod 234, thereby realizing the connection between the shaft tube 231 and the shaft 24, which facilitates the drive motor 22 to drive the shaft 24 to rotate. At the same time, the retraction of the electric telescopic rod 234 can separate the insertion block 235 from the shaft 24, thereby facilitating the separation of the furnace cover 12 from the furnace shell 11.

[0048] like Figure 7 As shown, slots 5 for use with insert blocks 235 are provided on both sides of the shaft 24. Key blocks 6 are welded to the front and rear sides of the inner wall of the shaft tube 231, and keyways 7 for use with key blocks 6 are provided on the front and rear sides of the shaft 24. By setting key blocks 6 and keyways 7, the connection position of the shaft 24 and the shaft tube 231 can be restricted, thereby facilitating the connection between insert blocks 235 and shaft 24.

[0049] like Figure 3 As shown, the bottom of the furnace tank 21 is annularly welded with a support rod 8, and the bottom of the support rod 8 is bolted to the inner wall of the furnace lining 14. The inner wall of the furnace tank 21 is smoothly wavy. By setting the support rod 8, not only can the furnace tank 21 be fixed, but a certain cavity can also be formed between the furnace tank 21 and the furnace lining 14. Therefore, it is convenient for the circulation component 26 to circulate heat. Furthermore, the smooth wavy inner wall of the furnace tank 21 can slow down the flow rate of heat in the furnace tank 21, so that the heat can make full contact with the workpiece.

[0050] like Figure 2As shown, the inner wall of the furnace lining 14 is provided with several wire-supporting bricks 9, and the heating element 15 is located on top of the wire-supporting bricks 9. By setting the wire-supporting bricks 9, it is possible to easily fix the heating element 15.

[0051] Brief description of the usage process: The material frame containing the workpiece is placed on the support plate 272, and the sliding plate 275 moves inside it, causing the insert structure between the fixed plate 274 and the sliding plate 275 to enter the interior of the material frame. When the sliding plate 275 moves, the spring on the left side of the ratchet 2763 causes the ratchet 2763 to be pressed by the ratchet rack 2761 and return to its original position. This allows the ratchet rack 2761 to lock into the ratchet 2763 at any position, restricting the position of the sliding plate 275 and thus fixing the material frame. Then, the heating element is controlled by the external control equipment of the furnace body 1. The component 15 operates and drives the drive motor 22, which in turn drives the shaft 24, the distribution fan 25, the workpiece, and the circulating fan 264 to rotate via the connecting assembly 23. The distribution fan 25 can increase the airflow speed inside the furnace body 1, thereby improving the carburizing efficiency. The circulating fan 264 draws in heat from the bottom of the furnace tank 21 and sends it into its interior. Therefore, under this action, the heat from the top of the furnace can be supplemented to the bottom of the furnace tank 21 and then enters the interior of the furnace tank 21 for circulating blowing. Thus, the heat can be concentrated inside the furnace tank 21 and make full contact with the workpiece for heat treatment.

[0052] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A multi-purpose furnace controlled atmosphere carburizing device, comprising a furnace body (1) and a distribution mechanism (2), characterized in that: The furnace body (1) includes a furnace shell (11), a furnace cover (12) is bolted to the top of the furnace shell (11), and a lifting and rotating element (13) is bolted to the top of the furnace cover (12). The lifting and rotating element (13) is bolted to the furnace shell (11) on the side close to the furnace shell (11). A furnace lining (14) is provided inside the furnace shell (11), and a heating element (15) is provided on the inner wall of the furnace lining (14). The distribution mechanism (2) is provided inside the furnace lining (14). The distribution mechanism (2) includes a furnace tank (21), which is bolted to the inside of the furnace lining (14). A drive motor (22) is bolted to the top of the furnace cover (12), and a connecting component (23) is bolted to the output end of the drive motor (22). The bottom of the connecting component (23) extends into the inside of the furnace lining (14) and is fitted with a shaft (24). A distribution fan (25) and a circulation component (26) are respectively fitted to the top and bottom of the surface of the shaft (24). The circulation component (26) is bolted to the bottom inside the furnace tank (21), and the bottom of the circulation component (26) is bolted to the inner wall of the furnace lining (14). Two sets of bearing components (27) are fitted to the surface of the shaft (24), and the two bearing components (27) are arranged in a staggered manner on the surface of the shaft (24). The circulation assembly (26) includes a fixed ring (261) which is bolted to the bottom of the inner wall of the furnace tank (21). The bottom of the fixed ring (261) is annularly bolted with a support plate (262). The bottom of the support plate (262) is bolted to the inner wall of the furnace lining (14). The bottom of the fixed ring (261) is provided with a cross plate (263), and the side of the cross plate (263) close to the support plate (262) is bolted to the support plate (262). The bottom of the shaft (24) is rotatably connected to the cross plate (263), and a circulation fan (264) is sleeved on the surface of the shaft (24). The circulation fan (264) is rotatably connected inside the fixed ring (261).

2. The multi-purpose furnace controlled atmosphere carburizing device according to claim 1, characterized in that: The bearing assembly (27) includes a connecting plate (271), which is sleeved on the surface of the shaft (24). A bearing plate (272) is annularly bolted to the surface of the connecting plate (271). A reinforcing rib (273) is bolted to the bottom of the bearing plate (272), and the side of the reinforcing rib (273) close to the connecting plate (271) is bolted to the connecting plate (271). A fixing plate (274) and a sliding plate (275) are bolted to the top of the bearing plate (272). A locking member (276) is provided inside the bearing plate (272), and the locking member (276) is bolted to the sliding plate (275).

3. The multi-purpose furnace controlled atmosphere carburizing device according to claim 2, characterized in that: The sliding plate (275) is T-shaped, and a slider (3) is bolted to the side of the sliding plate (275) near the inner wall of the support plate (272). The surface of the slider (3) slides in contact with the inner wall of the support plate (272).

4. The multi-purpose furnace controlled atmosphere carburizing device according to claim 2, characterized in that: The locking component (276) includes a ratchet rack (2761), which is bolted to the bottom of the sliding plate (275). A movable plate (2762) is slidably connected to the bottom of the inner wall of the bearing plate (272). A ratchet tooth (2763) is rotatably provided on the top of the movable plate (2762) through a shaft pin. The ratchet tooth (2763) works in conjunction with the ratchet rack (2761). A return spring (2764) is bolted to the top of the movable plate (2762), and the top of the return spring (2764) is bolted to the ratchet tooth (2763). A connecting rod (2765) passes through the interior of the movable plate (2762), and the connecting rod (2765) is externally connected to the movable device.

5. The multi-purpose furnace controlled atmosphere carburizing device according to claim 4, characterized in that: The bottom of the movable plate (2762) is bolted with a limiting block (4), and the surface of the limiting block (4) slides in contact with the inner wall of the bearing plate (272). The top of the movable plate (2762) is bolted with a baffle structure, which works in conjunction with the ratchet tooth (2763).

6. The multi-purpose furnace controlled atmosphere carburizing device according to claim 1, characterized in that: The connecting assembly (23) includes a shaft tube (231), which is bolted to the output end of the drive motor (22) and sleeved on the surface of the shaft rod (24). A sealing baffle (232) is sleeved on the bottom of the surface of the shaft tube (231). A protective shell (233) is bolted to both sides of the shaft tube (231). An electric telescopic rod (234) is bolted inside the protective shell (233), and a plug (235) is bolted to the side of the electric telescopic rod (234) near the shaft rod (24). The side of the plug (235) near the shaft rod (24) penetrates the interior of the shaft tube (231) and extends into the interior of the shaft rod (24).

7. The multi-purpose furnace controlled atmosphere carburizing device according to claim 6, characterized in that: Both sides of the shaft (24) are provided with slots (5) for use with inserts (235). The front and rear sides of the inner wall of the shaft tube (231) are welded with key blocks (6), and the front and rear sides of the shaft (24) are provided with keyways (7) for use with key blocks (6).

8. The multi-purpose furnace controlled atmosphere carburizing device according to claim 1, characterized in that: The bottom of the furnace tank (21) is welded with a support rod (8) in an annular shape, and the bottom of the support rod (8) is bolted to the inner wall of the furnace lining (14). The inner wall of the furnace tank (21) is set with a smooth wave shape.

9. The multi-purpose furnace controlled atmosphere carburizing device according to claim 1, characterized in that: The inner wall of the furnace lining (14) is provided with several wire-supporting bricks (9), and the heating element (15) is located on top of the wire-supporting bricks (9).

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