A pressure sintering furnace air charging device

Abstract

This invention relates to the field of sintering furnace gas filling technology, and in particular to a gas filling device for a pressure sintering furnace, comprising: a flow guide box fixed to the outer end of the furnace body, a fixed box rotatably connected to a rotating box fixedly installed at the end of the flow guide box away from the furnace body, a sealing component for sealing between the rotating box and the fixed box, the rotating box being able to communicate with the flow guide box when rotating, and an air inlet pipe rotatably connected to the end of the rotating box away from the fixed box; a flow distribution cavity fixedly installed on the inner side of the furnace body, with multiple gas filling holes at both the upper and lower ends of the flow distribution cavity; by setting a flow distribution cavity on the inner side of the furnace body and opening multiple gas filling holes at its upper and lower ends, this invention effectively reduces the direct impact of the gas filling airflow on the furnace insulation layer and heating elements, reduces the interference of the gas filling process on the uniformity of the temperature field inside the furnace, and improves the yield and quality of sintered products.

Description

Technical Field

[0001] This invention relates to the field of gas filling technology for sintering furnaces, and in particular to a gas filling device for pressure sintering furnaces. Background Technology

[0002] In the sintering process of ceramics, cemented carbide and powder metallurgy materials, pressure sintering furnaces usually need to be filled with inert gases (such as argon and nitrogen) under high temperature and high pressure to improve the density and performance of the materials.

[0003] In existing technology, the gas charging device of the pressure sintering furnace is located at the rear of the furnace body, and there is a U-shaped baffle inside the furnace to block and divert the high-pressure gas entering the furnace (e.g. Figure 1 (As shown). However, since the high-pressure gas inlet is located at the rear of the furnace body and there are only two branch inlets, one at the top and one at the bottom, when a large amount of high-pressure cold gas is injected, it will have a cooling effect on the temperature field at the rear of the furnace, resulting in a lower temperature in the rear zone and poor temperature field uniformity, which in turn affects the sintering of the product; and it is inconvenient to adjust the amount of gas inlet, so it cannot adapt to different sintering processes. Summary of the Invention

[0004] The purpose of this invention is to provide a gas filling device for a pressure sintering furnace, which aims to solve the problem mentioned in the background art where a large amount of high-pressure cold gas enters the furnace body, causing drastic local temperature fluctuations, disrupting the uniformity of the temperature field, and thus affecting the quality of the sintered products.

[0005] The technical solution adopted in this invention to solve the technical problem is as follows: a gas filling device for a pressure sintering furnace, comprising: A flow guide box is fixed to the outer end of the furnace body. A fixed box that is rotatably connected to the rotating box is fixedly installed at the end of the flow guide box away from the furnace body. A sealing component for sealing is provided between the rotating box and the fixed box. The rotating box can communicate with the flow guide box when it rotates. An air inlet pipe is rotatably connected to the end of the rotating box away from the fixed box. A diversion cavity is fixedly installed on the inner side of the furnace body, and the diversion cavity has multiple air filling holes that penetrate its side wall; An adjustment component is disposed at the outer end of the furnace body, with one end connected to the flow distribution cavity and the other end connected to the flow guide box. The adjustment component is used to adjust the airflow size entering the flow distribution cavity. A one-way air intake component is disposed between the regulating component and the flow distribution chamber. The one-way air intake component is used to prevent high-pressure and high-temperature gas in the furnace body from entering the regulating component.

[0006] Furthermore, a driving component is fixedly installed at the outer end of the furnace body, and the driving component is used to drive the rotating box to rotate at the upper end of the fixed box.

[0007] Furthermore, the fixed box and the flow guide box are connected on the side closest to each other, and at least three first connection ports are symmetrically fixedly installed on both side walls of the flow guide box. At least three sets of air inlets are evenly opened on the side of the fixed box away from the flow guide box, and a set of air outlets corresponding to the air inlets are opened on the side of the rotating box close to the fixed box.

[0008] Furthermore, the sealing assembly includes a rubber cylinder and a mounting ring. The mounting ring has two pieces and is fixed to the outer walls of the fixed box and the rotating box respectively. The mounting ring has an L-shaped cross-section. Multiple mounting grooves are evenly opened on one side wall of the mounting ring, and a mating groove is opened on the surface of the other end of the mounting ring. An annular rubber plate is fixedly installed at the open end of each rubber cylinder. A docking block with a corresponding docking groove is fixedly installed at one end of the annular rubber plate, and multiple mounting blocks with corresponding mounting grooves are evenly fixedly installed at the outer end of the annular rubber plate.

[0009] Furthermore, when the annular rubber plate is located inside the mounting ring, the mating block is inserted into the mating groove, and the mounting block inserts itself into the mounting groove by squeezing itself.

[0010] Furthermore, a limiting groove is provided on the side of the mounting ring on the rotating box away from the docking groove. A fixing shell is sleeved on the outside of the fixing box and the rotating box. One end of the fixing shell is fixed on the outer wall of the flow guide box, and the other end of the fixing shell is provided with a round hole. A plurality of balls corresponding to the limiting groove are evenly rotatably installed on the inner side of the other end. The outer wall of one end of the ball is in rolling connection with the inner wall of the limiting groove.

[0011] Furthermore, the adjusting component includes a flow divider box and a connecting pipe. Two flow dividers are provided and symmetrically fixed on the outer wall of the furnace body. Multiple partitions that divide the flow divider box into equal parts are evenly fixedly installed inside the flow divider box. A second connecting port corresponding to the first connecting port is fixedly installed at one end of the flow divider box. The inner end of the second connecting port is connected to different equally divided spaces inside the flow divider box. One end of the connecting tube is fixedly sleeved with the first connecting port, and the other end is fixedly sleeved with the second connecting port.

[0012] Furthermore, at least three regulating pipes of different diameters are fixedly installed on the side wall of the diversion box. The inner ends of the three regulating pipes are connected to the equally divided spaces at different inner ends of the diversion box. The other ends of the three regulating pipes pass through the side wall of the furnace body and are fixedly installed with a manifold box. The manifold box is connected to the diversion cavity through a connecting pipe.

[0013] Furthermore, the one-way air intake component is disposed inside the connecting pipe. The one-way air intake component includes a fixing ring fixed to the inner side of the connecting pipe near the manifold box. The upper end of the fixing ring is fixedly mounted with a mounting plate by bolts, and the lower end of the mounting plate is provided with a lower edge pipe passing through the fixing ring.

[0014] Furthermore, one side of the lower edge tube is a flat surface and is rotatably connected to a baffle via a rotating shaft. A counterweight is fixedly installed at the end of the baffle near the flat surface. When the counterweight is in a balanced state, the baffle abuts against the outer side of the end of the lower edge tube away from the mounting plate.

[0015] Furthermore, the driving component includes a motor and a reducer fixed to the outer end of the furnace body. The output end of the motor and the input end of the reducer are fixedly connected by a coupling. The output end of the reducer is fixedly equipped with a driving gear for meshing with a driven gear ring. The driven gear ring is fixed to the upper end of the rotating box.

[0016] Compared with existing technologies, the beneficial effects of this invention are reflected in: This invention effectively reduces the direct impact of the gas flow on the furnace insulation layer and heating elements by setting a flow distribution cavity on the inside of the furnace body and opening multiple gas filling holes at its upper and lower ends. This reduces the interference of the gas filling process on the uniformity of the temperature field inside the furnace and improves the yield and quality of sintered products. The present invention has an adjustment component at the outer end of the furnace body to achieve precise switching between three modes: "small, medium and large". It has a fast response speed and can perfectly adapt to the different requirements of atmosphere flow rate in different stages of the sintering process, such as degreasing, sintering and cooling. The present invention incorporates a sealing component between the rotating box and the fixed box. When a small amount of air leakage occurs between the rotating box and the fixed box, the gas enters the rubber cylinder and applies pressure to the annular rubber plate, making it more tightly pressed into the mounting ring. This improves the sealing reliability of the rotary joint under high temperature and high pressure conditions, extends the service life of the sealing components, and eliminates the risk of gas leakage. This invention incorporates a one-way air inlet component within the connecting pipe. During inflation, the airflow pushes open the baffle and enters the furnace. When inflation stops or the furnace pressure rises abnormally, the baffle automatically resets and seals the pipe opening under the action of the counterweight, effectively preventing high-temperature, high-pressure gas from flowing back into the external regulating components and inflation pipeline. This protects external precision components from high-temperature damage and ensures the safety of the system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the existing technology structure; Figure 2 This is a top-view cross-sectional diagram of a pressure sintering furnace. Figure 3 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 4 This is a schematic diagram showing the connection between the fixing box, the diversion box, and the diversion cavity of the present invention; Figure 5 This is a front sectional view of the fixing box, the rotating box, and the fixing shell of the present invention. Figure 6 This is a schematic diagram of the fixed shell unfolding structure of the present invention; Figure 7 This is a schematic diagram of the unfolded structure of the fixed box and the rotating box of the present invention; Figure 8 This is a schematic diagram of the rubber cylinder structure of the present invention; Figure 9 This is a bottom view of the rotating box and fixed shell structure of the present invention; Figure 10 This is a schematic diagram of the flow divider box and flow divider cavity structure of the present invention; Figure 11 This is a schematic cross-sectional view of the flow divider box of the present invention; Figure 12 This is a schematic diagram of the unidirectional air intake component of the present invention; Figure 13 This is a practical structural diagram of the driving component of the present invention.

[0018] Explanation of icon numbers: 10. Furnace body; 11. Carbon felt insulation cylinder; 20. Flow guide box; 201. First connection port; 21. Fixing box; 211. Air inlet; 212. Fixing pipe; 22. Rotating box; 221. Air outlet; 23. Air inlet pipe; 24. Sealed bearing; 25. Connecting pipe; 26. Diverter box; 264. Manifold box; 261. Second connection port; 262. Partition plate; 263. Adjusting pipe; 27. Diverter cavity; 271. Inflation port; 272. Fixing rod; 30. Fixed housing; 31. Ball bearing; 32. Limiting groove; 40. Rubber cylinder; 401. Annular rubber sheet; 402. Connecting block; 403. Mounting block; 41. Mounting ring; 411. Mounting groove; 412. Connecting groove; 50. Connecting pipe; 51. Fixing ring; 52. Mounting plate; 53. Lower edge pipe; 54. Baffle; 55. Counterweight; 60. Motor; 61. Reducer; 62. Drive gear; 63. Driven gear ring. Detailed Implementation

[0019] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0020] The illustrations provided in this embodiment are only intended to illustrate the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the shape, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] Please see Figures 2 to 13This invention provides a technical solution: a gas-filling device for a pressure sintering furnace, comprising a flow guide box 20 fixed to the outer end of the furnace body 10. At least three first connection ports 201 are symmetrically fixedly installed on both side walls of the flow guide box 20, and the first connection ports 201 communicate with the interior of the flow guide box 20. A fixed box 21, rotatably connected to a rotating box 22, is fixedly installed at the end of the flow guide box 20 away from the furnace body 10. The fixed box 21 communicates with the side of the flow guide box 20 that is close to it. The rotating box 22 is rotatably mounted on the upper end of the fixed box 21 via a fixed shell 30. Both the rotating box 22 and the fixed box 21 are made of hard alloy. A rotary seal is formed between the rotating box 22 and the fixed box 21. A sealing assembly is provided between the rotating box 22 and the fixed box 21 for further sealing, thereby increasing the sealing effect. At least three sets of air inlets 211 are evenly distributed on the side of the fixed box 21 away from the guide box 20. These three sets of air inlets 211 are arranged in a circle around the center of the fixed box 21 on its side wall, with two inlets in each set. Each group of two air inlets 211 is fixedly connected to the inner ends of two first connecting ports 201 coaxially at the left and right ends of the guide box 20 via a fixed pipe 212. A set of air outlets 221 corresponding to the air inlets 211 is provided on the side of the rotating box 22 near the fixed box 21. When the rotating box 22 rotates a certain angle at the upper end of the fixed box 21 (e.g., 90°, the air outlet 221 connects with the first group of air inlets 211; 180°, the air outlet 221 connects with the second group of air inlets 211; 270°, the air outlet 221 connects with the third group of air inlets 211), the two air inlets 211 connect with the second group of air inlets 211. The air inlet 211 is connected. When rotated 360 degrees, the air outlet 221 is attached to the end face of the fixed box 21 and is not connected to the air inlet 211. It can be connected to the guide box 20. The middle part of the rotating box 22 away from the fixed box 21 is rotatably connected to the air inlet pipe 23 through the sealed bearing 24. The air inlet pipe 23 is connected to the external inflation pipe. After the external inflation pipe is connected to the air source, the air in the rotating box 22 is inflated through the air inlet pipe 23. When the rotating box 22 and the fixed box 21 are connected, the gas in the rotating box 22 will enter the fixed box 21 and then enter the guide box 20. The diversion cavity 27 is fixedly installed inside the furnace body 10. Multiple air filling holes 271 penetrating its sidewalls are opened at both the upper and lower ends of the diversion cavity 27. The multiple air filling holes 271 disperse the concentrated airflow into multiple fine airflows, realizing the symmetrical, uniform and slow release of gas, reducing the impact on the uniformity of the temperature field during air filling. The diversion cavity 27 is located between the furnace body 10 and the carbon felt insulation cylinder 11. A fixing rod 272 is fixedly installed at the outer end of the diversion cavity 27 through a fixing sleeve. The other end of the fixing rod 272 is fixed to the inner wall of the furnace body 10.

[0022] The regulating component is located at the outer end of the furnace body 10, with one end connected to the diversion chamber 27 and the other end connected to the guide box 20. The regulating component is used to regulate the airflow size entering the diversion chamber 27. The gas entering the guide box 20 is adjusted into different airflow sizes by the regulating component and then enters the diversion chamber 27. It is then evenly and slowly sprayed into the furnace body 10 through the air filling hole 271 on the diversion chamber 27.

[0023] The one-way air intake component is located between the regulating component and the diversion chamber 27. The one-way air intake component is used to prevent high-pressure and high-temperature gas in the furnace body 10 from entering the regulating component. After the pressure sintering furnace is filled with gas, it prevents high-temperature and high-pressure gas inside the furnace body 10 from entering the regulating component and the filling structure above it from the diversion chamber 27, so as to avoid damage to the filling structure and reduce the pressure and temperature inside the furnace body 10.

[0024] Specifically, inert gas is introduced into the inlet pipe 23 through an external gas filling pipeline. The inert gas enters the inlet pipe 23 and the rotating box 22 in sequence, and then enters the guide box 20 through the fixed pipe 212. Finally, after being adjusted by the adjustment component, the inert gas enters the diversion chamber 27 through the one-way gas filling component, and is evenly and slowly sprayed into the furnace body 10 through the gas filling hole 271 on the diversion chamber 27, thereby reducing the impact of gas filling on the uniformity of the temperature field.

[0025] like Figures 5-9 As shown, in some embodiments, the sealing assembly includes a rubber cylinder 40 and mounting rings 41. Two mounting rings 41 are provided and are respectively fixed on the outer walls of the fixed box 21 and the rotating box 22. The mounting rings 41 have an L-shaped cross section. Multiple mounting grooves 411 are evenly provided on the sidewalls of one end of the two mounting rings 41. A mating groove 412 is provided on the surface of the other end of the two mounting rings 41 that is close to each other. The mating groove 412 is annular.

[0026] Annular rubber plates 401 are fixedly installed at the open ends on both the upper and lower sides of the rubber cylinder 40. The annular rubber plates 401 are made of hard rubber. A docking block 402 with a corresponding docking groove 412 is fixedly installed at the ends of the two annular rubber plates 401 that are far apart from each other. The docking block 402 is in the shape of a ring. Multiple mounting blocks 403 with corresponding mounting grooves 411 are evenly fixedly installed at the outer end of the annular rubber plates 401.

[0027] Specifically, when the two annular rubber plates 401 are inserted into the two mounting rings 41 respectively, the rubber cylinder 40 is in a slightly compressed state, and its body slightly bulges outward. The annular rubber plates 401 abut against the inner end sidewall of the mounting ring 41. At the same time, the mating block 402 is inserted into the mating groove 412, and the mounting block 403 is inserted into the mounting groove 411 by squeezing itself. When there is air leakage between the rotating box 22 and the fixed box 21, the gas enters the rubber cylinder 40 and applies pressure to the annular rubber plates 401, so that the annular rubber plates 401 are tightly pressed into the mounting rings 41. Thus, the rubber cylinder 40 is stably fixed by the gas pressure, realizing a "self-tightening seal" as the pressure increases.

[0028] like Figure 7 and Figure 9 As shown, in some embodiments, a limiting groove 32 is provided on the side of the mounting ring 41 on the rotating box 22 away from the docking groove 412. The limiting groove 32 is annular. A fixing shell 30 is sleeved on the outer side of the fixing box 21 and the rotating box 22. One end of the fixing shell 30 is fixed on the outer wall of the guide box 20, and the other end of the fixing shell 30 is provided with a round hole. A plurality of balls 31 corresponding to the limiting groove 32 are evenly rotatably installed on the inner side of the other end. More specifically, when the fixing shell 30 is fixed on the outer end of the guide box 20, it is simultaneously sleeved on the outer side of the fixing box 21 and the rotating box 22. The outer wall of one end of the ball 31 is rolledly connected to the inner wall of the limiting groove 32. When the rotating box 22 rotates, the plurality of balls 31 roll in the limiting groove 32 to limit the rotation of the rotating box 22, so that it rotates in place at the upper end of the fixing box 21.

[0029] like Figure 4 , Figure 10 and Figure 11 As shown, in some embodiments, the adjusting component includes a diversion box 26 and a connecting pipe 25. Two diversion boxes 26 are provided and symmetrically fixed on the outer wall of the furnace body 10. Multiple partitions 262 that divide the diversion box 26 equally are uniformly fixed inside the diversion box 26. The partitions 262 divide the interior of the diversion box 26 into at least three spaces of the same size. A second connecting port 261 corresponding to the first connecting port 201 is fixedly installed at one end of the diversion box 26. There are at least three first connecting ports 201 and at least three second connecting ports 261. The inner end of the second connecting port 261 is connected to different equally divided spaces inside the diversion box 26. One end of the connecting pipe 25 is fixedly sleeved with the first connecting port 201, and the other end is fixedly sleeved with the second connecting port 261. Gas in the rotating box 22 flows into the non-empty space inside the diversion box 26 through the connecting pipe 25.

[0030] At least three regulating pipes 263 of different diameters are fixedly installed on the side wall of the diversion box 26. The inner ends of the three regulating pipes 263 are connected to the inner ends of the diversion box 26 in equal division spaces. The other ends of the three regulating pipes 263 pass through the side wall of the furnace body 10 and are fixedly installed with a junction box 264. The junction box 264 is connected to the diversion cavity 27 through a connecting pipe 50. The three regulating pipes 263 of different diameters correspond to the airflow entering the junction box 264 as "small, medium, and large".

[0031] Specifically, the inert gas in the rotating box 22 enters the connecting pipe 25 through the fixed pipe 212, and the inert gas in the connecting pipe 25 enters the distribution box 26, and then enters the distribution cavity 27 through the corresponding regulating pipe 263. This regulates the amount of airflow entering the distribution cavity 27, achieving active, precise, and controllable air intake, which can adapt to the different atmosphere requirements of different sintering processes. like Figure 11 and Figure 12 As shown, in some embodiments, a one-way air intake component is disposed inside the connecting pipe 50. The one-way air intake component includes a fixing ring 51 fixed to the inner side of the end of the connecting pipe 50 near the manifold 264. An mounting plate 52 is fixedly installed on the upper end of the fixing ring 51 by bolts. The mounting plate 52 is annular. A lower edge pipe 53 passing through the fixing ring 51 is provided at the lower end of the mounting plate 52. One side of the lower edge pipe 53 is flat and is rotatably connected to a baffle 54 via a rotating shaft. A counterweight 55 is fixedly installed on the end of the baffle 54 near the flat side. When the counterweight 55 is in a balanced state, the baffle 54 abuts against the outer side of the lower edge pipe 53 away from the mounting plate 52, blocking the lower port of the lower edge pipe 53.

[0032] Specifically, inert gas enters the manifold 264 and then flows into the connecting pipe 50. When the downward pressure applied to the baffle 54 is greater than the force applied to the counterweight 55, the baffle 54 rotates downward. The inert gas passes through the lower edge pipe 53 and the connecting pipe 50 and enters the diversion chamber 27. After the gas filling is completed, no more inert gas is introduced into the manifold 264. The baffle 54 is reset under the force of the counterweight 55 and blocks the lower edge pipe 53 to prevent the high-pressure gas in the furnace body 10 from flowing back.

[0033] like Figure 3 , Figure 4 and Figure 13As shown, in some embodiments, a driving component is fixedly installed at the outer end of the furnace body 10. The driving component is used to drive the rotating box 22 to rotate at the upper end of the fixed box 21. The driving component includes a motor 60 and a reducer 61 fixedly installed at the outer end of the furnace body 10. The output end of the motor 60 and the input end of the reducer 61 are fixedly connected by a coupling. The output end of the reducer 61 is fixedly installed with a drive gear 62 for meshing with a driven gear ring 63. The driven gear ring 63 is fixed at the upper end of the rotating box 22. More specifically, the motor 60 is electrically connected to the controller of the pressure sintering furnace. The sintering furnace controller sends a rotation command to the motor 60 according to the current process stage (such as degreasing, sintering, cooling). The motor 60 drives the rotating box 22 to rotate to the target angle. For example, rotating 90° achieves a small flow rate of air intake; rotating 180° achieves a medium flow rate of air intake; and rotating 270° achieves a large flow rate of air intake.

[0034] When this device is working, the sintering furnace controller sends a rotation command to the motor 60 according to the current process stage. The motor 60 drives the rotating box 22 to rotate to the target angle. Inert gas is then introduced into the inlet pipe 23 through the external gas filling pipeline. The inert gas enters the inlet pipe 23 and the rotating box 22 in sequence, and then enters the corresponding connecting pipe 25 through the fixed pipe 212. The inert gas in the connecting pipe 25 then enters the corresponding regulating pipe 263 through the diversion box 26. Finally, the inert gas enters the diversion cavity 27 after passing through the one-way gas inlet component, and is evenly and slowly sprayed into the furnace body 10 through the gas filling hole 271 on the diversion cavity 27, reducing the impact of gas filling on the temperature field uniformity.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and 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 gas filling device for a pressure sintering furnace, characterized in that, include: A flow guide box (20) is fixed at the outer end of the furnace body (10). A fixed box (21) is fixedly installed at the end of the flow guide box (20) away from the furnace body (10) and is rotatably connected to the rotating box (22). A sealing component for sealing is provided between the rotating box (22) and the fixed box (21). The rotating box (22) can communicate with the flow guide box (20) when it rotates. An air inlet pipe (23) is rotatably connected at the end of the rotating box (22) away from the fixed box (21). The diversion cavity (27) is fixedly installed on the inner side of the furnace body (10), and the diversion cavity (27) is provided with a plurality of air filling holes (271) penetrating its side wall. An adjustment component is provided at the outer end of the furnace body (10), with one end connected to the flow distribution chamber (27) and the other end connected to the flow guide box (20). The adjustment component is used to adjust the airflow size entering the flow distribution chamber (27). A one-way air intake component is disposed between the regulating component and the diversion cavity (27). The one-way air intake component is used to prevent high-pressure and high-temperature gas in the furnace body (10) from entering the regulating component.

2. The gas filling device for a pressure sintering furnace according to claim 1, characterized in that, A driving component is fixedly installed at the outer end of the furnace body (10), and the driving component is used to drive the rotating box (22) to rotate at the upper end of the fixed box (21).

3. The gas filling device for a pressure sintering furnace according to claim 1, characterized in that, The fixed box (21) and the flow guide box (20) are connected on the side close to each other. At least three first connection ports (201) are symmetrically fixed on both side walls of the flow guide box (20). At least three sets of air inlets (211) are evenly opened on the side of the fixed box (21) away from the flow guide box (20). A set of air outlets (221) corresponding to the air inlets (211) is opened on the side of the rotating box (22) close to the fixed box (21).

4. The gas filling device for a pressure sintering furnace according to claim 1, characterized in that, The sealing assembly includes a rubber cylinder (40) and a mounting ring (41). The mounting ring (41) has two pieces and is fixed on the outer walls of the fixed box (21) and the rotating box (22) respectively. The mounting ring (41) has an L-shaped cross section. Multiple mounting grooves (411) are evenly opened on one side wall of the mounting ring (41), and a mating groove (412) is opened on the other side surface of the mounting ring (41). The rubber cylinder (40) has an annular rubber plate (401) fixedly installed at the open end. One end of the annular rubber plate (401) is fixedly installed with a docking block (402) corresponding to the docking groove (412). The outer end of the annular rubber plate (401) is uniformly fixedly installed with multiple mounting blocks (403) corresponding to the mounting groove (411).

5. The gas filling device for a pressure sintering furnace according to claim 4, characterized in that, When the annular rubber plate (401) is located inside the mounting ring (41), the docking block (402) is inserted into the docking groove (412), and the mounting block (403) is inserted into the mounting groove (411) by squeezing itself.

6. The gas filling device for a pressure sintering furnace according to claim 1, characterized in that, A limiting groove (32) is provided on the side of the mounting ring (41) located on the rotating box (22) away from the docking groove (412). A fixing shell (30) is sleeved on the outside of the fixing box (21) and the rotating box (22). One end of the fixing shell (30) is fixed on the outer wall of the guide box (20). The other end of the fixing shell (30) is provided with a round hole, and multiple balls (31) corresponding to the limiting groove (32) are evenly rotated and installed on the inner side of the other end. The outer wall of one end of the ball (31) is in rolling connection with the inner wall of the limiting groove (32).

7. The gas filling device for a pressure sintering furnace according to claim 1, characterized in that, The adjustment component includes a flow divider box (26) and a connecting pipe (25). The flow divider box (26) has two parts and is symmetrically fixed on the outer wall of the furnace body (10). Multiple partitions (262) that divide the flow divider box (26) into equal parts are evenly fixed inside the flow divider box (26). A second connecting port (261) corresponding to the first connecting port (201) is fixedly installed at one end of the flow divider box (26). The inner end of the second connecting port (261) is connected to different equally divided spaces inside the flow divider box (26). One end of the connecting tube (25) is fixedly connected to the first connecting port (201), and the other end is fixedly connected to the second connecting port (261).

8. The gas filling device for a pressure sintering furnace according to claim 7, characterized in that, At least three regulating pipes (263) of different diameters are fixedly installed on the side wall of the diversion box (26). The inner ends of the three regulating pipes (263) are connected to the inner ends of the diversion box (26) in equal division spaces. The other ends of the three regulating pipes (263) pass through the side wall of the furnace body (10) and are fixedly installed with a junction box (264). The junction box (264) is connected to the diversion cavity (27) through a connecting pipe (50).

9. The gas filling device for a pressure sintering furnace according to claim 8, characterized in that, The one-way air intake component is disposed inside the connecting pipe (50). The one-way air intake component includes a fixing ring (51) fixed inside the end of the connecting pipe (50) near the junction box (264). The upper end of the fixing ring (51) is fixedly mounted with a mounting plate (52) by bolts. The lower end of the mounting plate (52) is provided with a lower edge pipe (53) passing through the fixing ring (51).

10. The gas filling device for a pressure sintering furnace according to claim 9, characterized in that, One side of the lower edge tube (53) is a flat surface and is rotatably connected to a baffle (54) via a rotating shaft. A counterweight (55) is fixedly installed at the end of the baffle (54) near the flat surface. When the counterweight (55) is in a balanced state, the baffle (54) abuts against the outer side of the end of the lower edge tube (53) away from the mounting plate (52).

11. The gas filling device for a pressure sintering furnace according to claim 2, characterized in that, The driving component includes a motor (60) and a reducer (61) fixed at the outer end of the furnace body (10). The output end of the motor (60) and the input end of the reducer (61) are fixedly connected by a coupling. The output end of the reducer (61) is fixedly equipped with a drive gear (62) for meshing with a driven gear ring (63). The driven gear ring (63) is fixed at the upper end of the rotating box (22).

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