High-pressure gas quenching vacuum furnace for heat treatment of metal parts
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA MACHINERY VACUUM TECHNOLOGY (JINAN) CO LTD
- Filing Date
- 2026-04-22
- Publication Date
- 2026-06-12
Smart Images
Figure CN122189309A_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the technical field of high-pressure gas quenching vacuum furnace equipment, and in particular to a high-pressure gas quenching vacuum furnace for heat treatment of metal parts. Background Technology
[0002] In the processing of metal structures such as fastener steel for automobiles, wind power, high-performance machine tool guide rails and other components, high-performance tunneling machine tool steel, lead-free bath wire products, high-strength cord steel products, gas insulation, pipeline, and railway weathering welding wire steel, heat treatment is often required to ensure the strength and quality of the metal structure, which necessitates the use of high-pressure gas quenching vacuum furnace equipment.
[0003] Patent application CN202411132282.0 discloses a self-cleaning high-pressure gas quenching vacuum furnace. Dry ice sublimates directly into carbon dioxide gas at room temperature. The gas is moved from a storage tank to a rotator via a connecting pipe and sprayed out under high pressure through a nozzle. The carbon dioxide gas cleans the interior of the furnace. A vacuum pump is then activated; the flushed impurities mix with the carbon dioxide and are directly extracted to the outside, completing the internal self-cleaning of the furnace. The self-cleaning component automatically cleans the inner wall of the furnace after heat treatment, eliminating the need for manual disassembly and cleaning by professionals. This saves time and effort, requires minimal expertise from operators, and allows the flushed impurities to be directly removed by the vacuum pump. The impurities are extracted without requiring personnel to enter the furnace to collect them, making it more automated and convenient. The heating components achieve the following technical effects: the furnace interior has an insulation layer, with seven lower heating tubes fixedly connected to the bottom of the insulation layer, and seven side heating tubes fixedly connected to each side of the insulation layer. A switch is installed on the air inlet pipe, and a vacuum pump is fixedly installed on the exhaust pipe. Two lower sliding tracks are fixedly installed inside the furnace, located on the front and rear sides of the lower heating tubes respectively. A support base is fixedly installed at the bottom of the furnace exterior, with two slide rail grooves below the support base, each containing a bottom slide rail. The component can heat the workpiece. Both the side heating pipes and the lower heating pipe are folded, which helps to increase the fit between the side heating pipes and the insulation layer, facilitates the fixing of the side heating pipes and the lower heating pipe, and also helps to heat the workpiece from multiple angles, making the heat treatment more complete and preventing the phenomenon that some parts of the workpiece cannot be heated. The invention patent with patent application number CN202310626798.X discloses a high-efficiency and energy-saving high-pressure gas quenching vacuum furnace and gas quenching method. The workpiece is placed on the workpiece heating area of the heat exchange device through the cover doors on both sides. The drive component drives the transmission helical gear to rotate, and the transmission helical gear drives the two sides The impeller rotates in reverse, blowing internal airflow onto the workpiece in the heating zone for cooling. During gas quenching, the adjusting component moves up or down, causing the guide plate to open and close synchronously, thus regulating the internal airflow direction. Simultaneously, cooling water is introduced into the finned heat exchange tubes to cool the gas, reducing its temperature and improving quenching efficiency. The opening direction of the adjusting component and guide plate is adjusted during workpiece heating, thereby changing the internal airflow direction and ensuring uniform heating of the workpiece. In addition, a motor shaft drives two impellers to rotate coaxially in opposite directions, effectively reducing internal shaft torque, lowering the energy consumption of the gas quenching furnace, and improving the gas quenching heating effect on the workpiece.
[0004] According to its publicly available technical solutions, existing high-pressure gas quenching vacuum furnace equipment has several drawbacks during use. First, it cannot quickly seal the furnace inlet and outlet, often requiring cumbersome fastening or clamping devices, which reduces work efficiency or increases equipment investment. Second, after prolonged use, material deformation can easily lead to incomplete sealing, compromising the durability of the seal. Third, when using a dual-structure sealing method, air can easily seep into the inner side of the furnace after vacuuming, further compromising the vacuum level within the furnace. Summary of the Invention
[0005] This disclosure aims to at least partially address one of the technical problems in the related art.
[0006] Therefore, the purpose of this disclosure is to provide a high-pressure gas quenching vacuum furnace for heat treatment of metal parts.
[0007] To achieve the above objectives, this disclosure provides a high-pressure gas quenching vacuum furnace for heat treatment of metal parts, comprising: a heat treatment assembly, a sealing assembly, and a one-way communication assembly. The heat treatment assembly includes a furnace body and a furnace opening. A support assembly is installed on the furnace body, including a support plate and a strut plate. A heating assembly is installed on the furnace body, including a bending plate and an electric heating wire. A vacuum pumping assembly is installed on the furnace body, including a vacuum pump and an air vent. A cooling assembly is installed on the outer side of the furnace body, including a cooler and an inlet pipe. A communication assembly is installed on the cooler, including a connecting pipe and a return pipe. The sealing assembly includes a first conical opening and a second conical opening, both located inside the furnace opening. A sealing assembly is installed inside the first and second conical openings, including an inner cover and an outer cover. A sliding assembly is installed on the top of the furnace opening, including a guide... The system comprises a rail and a slider. A movable component, including a connecting rod and rollers, is mounted on the slider. A lifting component, including a support rod and a telescopic rod, is mounted on the slider. A pulling component, including a motor and a screw, is mounted on the outer cover. A connecting component, including a groove and a rotating sleeve, is mounted on the inner side of the furnace opening. A rotating component, including a rotating rod and a worm gear, is mounted on the inner side of the groove. A driving component, including a second motor and a worm gear, is mounted on the rotating rod. A movable component, including a telescopic rod and a bushing, is mounted on the rotating rod. A one-way communication component includes a through-hole and a Tesla valve, both located inside the inner cover. A limiting component, including an inner cavity and a conical cavity, is located inside the inner cavity and the conical cavity. A movable component, including a piston and a stopper, is mounted on the inner side of the inner cavity and the conical cavity.
[0008] Optionally, the support plate is welded to the inner wall of the bottom of the furnace body, the top of the support plate is welded to the bottom of the support plate, the bottom of the support plate is welded to the inner wall of the bottom of the furnace body, the air holes are opened on the inner side of the support plate, the air holes are distributed at both ends of the support plate, the bending plate is welded to the inner wall of the top of one end of the furnace body, the electric heating wire is welded to the top of the furnace body, and the vacuum pump is installed at the bottom of one end of the furnace body by bolts, and the vacuum pump is connected to the bottom of one end of the furnace body.
[0009] Optionally, the cooler is installed on the outside of the furnace body, one end of the connecting pipe and the return pipe are respectively welded to both ends of the cooler, and the other end of the connecting pipe and the return pipe are respectively welded to the bottom of both ends of the furnace body. The bottom of both ends of the furnace body are respectively connected to the cooler through the connecting pipe and the return pipe. The inlet pipe is welded to the connecting pipe and is connected to the connecting pipe. A valve is installed on the inlet pipe.
[0010] Optionally, one end of the furnace opening is welded to the other end of the furnace body, and the furnace opening is connected to the inner side of the furnace body. A first conical opening is formed on the inner wall of one end of the furnace opening, and a second conical opening is formed on the inner wall of the other end of the furnace opening. The outer side of the inner cover is secured to the inner wall of the first conical opening, and the outer side of the outer cover is secured to the inner wall of the second conical opening. One end of the guide rail is welded to the outer side of the other end of the furnace body, and the slider is secured to the inner side of the guide rail. The roller is mounted on the outer side of the slider via a bearing, and a motor is mounted on the inner side of the slider. The roller is keyed to the output shaft of the motor. Teeth are formed on the outer side of the roller, and grooves are formed on the inner side of the guide rail. The teeth and grooves mesh with each other.
[0011] Optionally, the bottom end of the connecting rod is welded to the outer side of the outer cover, the support rod is welded to the bottom of one end of the slider, the bottom end of the support rod extends to the bottom of the guide rail, the top end of the connecting rod passes through the bottom of the guide rail and is mounted on the inner side of the other end of the slider through a pivot, one end of the telescopic rod is mounted on the support rod through a pivot, and the other end of the telescopic rod is mounted on the connecting rod through a pivot.
[0012] Optionally, the motor is bolted to the inner side of the outer cover, a retaining sleeve is welded to the outer cover, one end of the screw is bolted to the output shaft of the motor, a retaining ring is welded to the outer side of the screw, the retaining sleeve is fitted on the outer side of the retaining ring, a threaded sleeve is welded to the inner cover, the other end of the screw passes through the retaining sleeve and extends to the inner side of the threaded sleeve, and the threaded sleeve is threaded onto the outer side of the other end of the screw.
[0013] Optionally, the groove is formed on the inner wall of the furnace opening, the rotating sleeve is welded to the inner wall of the groove, both ends of the rotating rod are clamped on the inner side of the rotating sleeve, the worm gear is welded to the outer side of the rotating rod, the second motor is installed on the inner wall of the groove by bolts, one end of the worm is welded to the output shaft of the second motor, the worm is clamped on the outer side of the worm gear, and the worm and the worm gear mesh.
[0014] Optionally, the bushing is welded to the outer side of the inner cover, one end of the telescopic rod two is welded to the outer side of the rotating rod, and the other end of the telescopic rod two is mounted on the bushing through a rotating shaft. There are two telescopic rods two, which are symmetrically distributed at the top and bottom of the threaded sleeve.
[0015] Optionally, the through hole, the inner cavity, and the conical cavity are all located inside the inner cover. One end of the through hole is connected to one side of the inner cover, the other end of the through hole is connected to one end of the inner cavity, the other end of the inner cavity is connected to one end of the conical cavity, and the conical cavity is connected to the other side of the sealing cover.
[0016] Optionally, the stopper is integrally formed on one end of the piston, the outer side of the stopper is clamped on the inner wall of the conical cavity, the other end of the piston passes through the conical cavity and extends to the inner side of the inner cavity, the outer side of the piston is movably sealed on the inner wall of the inner cavity, the Tesla valve is opened on the inner side of the inner cover, one end of the Tesla valve is connected to one end of the inner cavity, the other end of the Tesla valve is connected to the inner side of the conical cavity, and the Tesla valve is evenly distributed around the inner cavity.
[0017] The technical solution provided in this disclosure may include the following beneficial effects: During use, metal structures such as fastener steel for automobiles and wind power, high-performance machine tool guide rail steel, high-performance tunneling machine tool steel, lead-free bath wire products, high-strength cord steel products, gas shielding, pipeline, and railway weathering welding wire steel are placed on top of the support plate inside the furnace. Then, motor two and telescopic rod two are turned on. Motor two drives the worm gear, which, through meshing with the worm wheel, drives the rotating rod to rotate under the support of the rotating sleeve. The rotating rod drives telescopic rod two to rotate. Telescopic rod two, through the bushing, drives the inner sealing cover to rotate into the cone opening one inside the furnace. Telescopic rod two retracts and pulls the inner sealing cover into the inner side of cone opening one. Telescopic rod one retracts, so that telescopic rod one, supported by the support rod, will connect... When the rod is pulled down, the connecting rod rotates downward at the bottom of the slider, rotating the outer cover downward to the outside of the furnace opening and aligning it with the first conical opening. The motor inside the slider drives the roller, causing the slider to move inside the guide rail until the screw is inserted into the inner side of the screw sleeve. The first motor drives the screw to rotate, and the movement of the screw inside the screw sleeve causes the outer cover to be clamped onto the inner wall of the second conical opening. At the same time, the mutual pulling of the screw and the screw sleeve ensures that the inner and outer covers are respectively sealed and clamped inside the first and second conical openings. This allows for quick sealing of the furnace opening without cumbersome tightening operations or the use of high-pressure clamping equipment to clamp the sealing cover, improving work efficiency and reducing equipment investment.
[0018] During operation, the vacuum pump is turned on to completely remove the air from the furnace. Then, the electric heating wire is turned on, and the metal structures on the support plate, including fastener steel for automobiles and wind power, high-performance machine tool guide rails, high-performance tunneling machine tool steel, lead-free wire products, high-strength cord steel products, gas shielding, pipelines, and railway weathering welding wire steel, are heated to the required temperature and held at that temperature for the required time. Then, inert gas is introduced into the inside of the furnace through the inlet and connecting pipes until the gas pressure inside the furnace reaches the required value. The gas then flows through the vents and bending plates inside the furnace to rapidly cool the materials inside, and then returns to the cold storage through the return pipe. The inert gas after cooling is then introduced into the inner side of the furnace body through a connecting pipe to complete the heat treatment of the material. During the vacuuming process, the outer cover is used to seal the second conical opening, and the external atmospheric pressure is used to squeeze the outer cover to increase the sealing pressure. When the furnace body is pressurized, the air pressure squeezes the inner cover, which is then locked inside the first conical opening. This effectively utilizes the tension between the screw and the sleeve, as well as the air pressure, to perform the sealing work. At the same time, it effectively avoids the air pressure acting on the screw, sleeve, and other fixed structures, thus effectively preventing the fixed structures from being deformed by external forces and damaged, ensuring the safety of the equipment, ensuring the reliability of the sealing work, and improving the durability of the equipment.
[0019] During vacuuming, air in the furnace opening flows to the left through the conical cavity, pushing the stopper. The stopper then moves the piston to the left. The air in the conical cavity flows rapidly to the left end of the inner cavity through the Tesla valve, blocking and buffering the piston's leftward movement, preventing collision between the piston and the inner cavity, and ensuring piston safety. The air in the inner cavity then enters the inner side of the furnace body through the through hole, completely extracting air from the furnace body and furnace opening. This prevents air from the furnace opening from being blocked by the inner cover, and also prevents air from the furnace opening from seeping into the inner side of the furnace body during the heating stage, thus preventing material oxidation and ensuring safe heat treatment. When pressurizing the furnace body, the air pressure inside the furnace enters the inner cavity through the through hole. Utilizing the blocking effect of the Tesla valve, the air pressure pushes the piston to the right. The piston moves the stopper to seal the conical cavity. The movement of the piston and stopper relies entirely on changes in air pressure difference, achieving unidirectional sealing without the need for elastic structures, thus improving the durability of the equipment.
[0020] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description
[0021] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the structure of a high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to an embodiment of this disclosure. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to an embodiment of this disclosure. Figure 2 ; Figure 3 This is a cross-sectional view of a high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to an embodiment of this disclosure. Figure 1 ; Figure 4 This is a cross-sectional view of a high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to an embodiment of this disclosure. Figure 2 ; Figure 5 This is a schematic diagram of the inner cover of a high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to an embodiment of this disclosure; Figure 6 This is a cross-sectional schematic diagram of the outer cover of a high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to an embodiment of this disclosure; Figure 7 This is a schematic diagram of the through hole structure of a high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to an embodiment of this disclosure; Figure 8This is a cross-sectional view of a high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to an embodiment of this disclosure; As shown in the figure: 1. Furnace body; 2. Furnace opening; 3. Support plate; 4. Support plate; 5. Air hole; 6. Bending plate; 7. Electric heating wire; 8. Vacuum pump; 9. Cooler; 10. Inlet pipe; 11. Valve; 12. Connecting pipe; 13. Return pipe; 14. Conical opening one; 15. Inner cover; 16. Conical opening two; 17. Outer cover; 18. Guide rail; 19. Slider; 20. Roller; 21. Connecting rod; 22. Support rod; 23. Telescopic rod one; 24. Motor one; 25. Screw; 26. Screw sleeve; 27. Rotating rod; 28. Rotating sleeve; 29. Worm gear; 30. Motor two; 31. Worm; 32. Telescopic tube two; 33. Bushing; 34. Through hole; 35. Inner cavity; 36. Conical cavity; 37. Tesla valve; 38. Piston; 39. Plug. Detailed Implementation
[0022] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.
[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7As shown in the figure, this disclosure proposes a high-pressure gas quenching vacuum furnace for heat treatment of metal parts, comprising: a heat treatment assembly, the heat treatment assembly including a furnace body 1 and a furnace opening 2, a support assembly mounted on the furnace body 1, the support assembly including a support plate 3 and a support plate 4, a heating assembly mounted on the furnace body 1, the heating assembly including a bending plate 6 and an electric heating wire 7, a vacuum pump assembly mounted on the furnace body 1, the vacuum pump assembly including a vacuum pump 8 and an air hole 5, a cooling assembly mounted on the outside of the furnace body 1, the cooling assembly including a cooler 9 and an inlet pipe 10, a connecting assembly mounted on the cooler 9, the connecting assembly including a connecting pipe 12 and a return pipe 13; and a sealing assembly, the sealing assembly including a first conical opening 14 and a second conical opening 16, both the first conical opening 14 and the second conical opening 16 being opened inside the furnace opening 2, and a sealing assembly mounted inside the first conical opening 14 and the second conical opening 16. The sealing assembly includes an inner sealing cover 15 and an outer sealing cover 17. A sliding assembly is installed on the top of the furnace opening 2. The sliding assembly includes a guide rail 18 and a slider 19. A moving assembly is installed on the slider 19. The moving assembly includes a connecting rod 21 and a roller 20. A lifting assembly is installed on the slider 19. The lifting assembly includes a support rod 22 and a telescopic rod 23. A pulling assembly is installed on the outer sealing cover 17. The pulling assembly includes a motor 24 and a screw 25. A connecting assembly is installed on the inner side of the furnace opening 2. The connecting assembly includes a groove 40 and a rotating sleeve 28. A rotating assembly is installed on the inner side of the furnace opening 2. The rotating assembly includes a rotating rod 27 and a worm gear 29. A driving assembly is installed on the inner side of the groove 40. The driving assembly includes a second motor 30 and a worm gear 31. A movable assembly is installed on the rotating rod 27. The movable assembly includes a second telescopic rod 32 and a bushing 33.A one-way communication component includes a through hole 34 and a Tesla valve 37, both of which are located inside an inner cover 15. A limiting component is located inside the inner cover 15, comprising an inner cavity 35 and a conical cavity 36. A moving component, including a piston 38 and a stopper 39, is installed inside the inner cover 15. One end of the through hole 34 communicates with one side of the inner cover 15, and the other end communicates with one end of the inner cavity 35. One end of the piston 38 is connected to one end of the conical cavity 36, which is connected to the other side of the inner cover 15. A stopper 39 is integrally formed on one end of the piston 38, with its outer side clamping against the inner wall of the conical cavity 36. The other end of the piston 38 passes through the conical cavity 36 and extends to the inner side of the inner cavity 35, with its outer side movably sealing against the inner wall of the inner cavity 35. A Tesla valve 37 is located inside the inner cover 15, with one end connected to one end of the inner cavity 35 and the other end connected to the inner side of the conical cavity 36. The Tesla valves 37 are evenly distributed around the inner cavity 35.
[0024] Understandably, during vacuuming, the air inside furnace opening 2 flows to the left through cone cavity 36, pushing stopper 39. Stopper 39 then moves piston 38 to the left. The air inside cone cavity 36 flows rapidly to the left end of inner cavity 35 through Tesla valve 37, blocking and buffering the leftward movement of piston 38, preventing piston 38 from colliding with inner cavity 35, and ensuring the safety of piston 38. The air inside inner cavity 35 then enters the inner side of furnace body 1 through through hole 34, so as to completely extract the air from furnace body 1 and furnace opening 2, avoiding the air in furnace opening 2 from being blocked by inner cover 15. The gas cannot be effectively extracted, and it can prevent air from the furnace opening 2 from seeping into the inside of the furnace body 1 during the heating stage, thereby preventing the material from being oxidized and ensuring the safe heat treatment of the material. When pressurizing the furnace body 1, the gas pressure in the furnace body 1 enters the inner cavity 35 through the through hole 34. With the blocking effect of the Tesla valve 37, the gas pressure pushes the piston 38 to the right. The piston 38 drives the stopper 39 to seal the conical cavity 36. The movement of the piston 38 and the stopper 39 depends entirely on the change of gas pressure difference. One-way sealing can be achieved without the use of elastic structures such as springs, thus improving the durability of the equipment.
[0025] like Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 8As shown, the support plate 3 is welded to the inner wall of the bottom of the furnace body 1; the top of the support plate 4 is welded to the bottom of the support plate 3; the bottom of the support plate 4 is welded to the inner wall of the bottom of the furnace body 1; the air holes 5 are opened on the inner side of the support plate 3 and are distributed at both ends of the support plate 3; the bending plate 6 is welded to the inner wall of the top of one end of the furnace body 1; the electric heating wire 7 is welded to the top of the furnace body 1; the vacuum pump 8 is bolted to the bottom of one end of the furnace body 1 and is connected to the bottom of one end of the furnace body 1; the cooler 9 is installed on the outer side of the furnace body 1; one end of the connecting pipe 12 and the return pipe 13 are respectively welded to both ends of the cooler 9; the other end of the connecting pipe 12 and the return pipe 13 are respectively welded to the bottom of both ends of the furnace body 1; the bottom of both ends of the furnace body 1 are respectively connected to the cooler 9 through the connecting pipe 12 and the return pipe 13; the inlet pipe 10 is welded to the connecting pipe 1... 2. The inlet pipe 10 is connected to the connecting pipe 12. A valve 11 is installed on the inlet pipe 10. One end of the furnace opening 2 is welded to the other end of the furnace body 1. The furnace opening 2 is connected to the inner side of the furnace body 1. The first conical opening 14 is opened on the inner wall of one end of the furnace opening 2. The second conical opening 16 is opened on the inner wall of the other end of the furnace opening 2. The outer side of the inner cover 15 is stuck on the inner wall of the first conical opening 14. The outer side of the outer cover 17 is stuck on the inner wall of the second conical opening 16. One end of the guide rail 18 is welded to the outer side of the other end of the furnace body 1. The slider 19 is stuck on the inner side of the guide rail 18. The roller 20 is installed on the outer side of the slider 19 through a bearing. A motor is installed on the inner side of the slider 19. The roller 20 is keyed to the output shaft of the motor. The outer side of the roller 20 is provided with teeth. The inner side of the guide rail 18 is provided with grooves. The teeth and grooves mesh with each other.
[0026] Understandably, during use, metal structures such as fastener steel for automobiles and wind power, high-performance machine tool guide rails, high-performance tunneling machine tool steel, lead-free bath wire products, high-strength cord steel products, gas insulation, pipeline, and railway weathering welding wire steel are placed on top of the support plate 3 inside the furnace body 1. Then, the second motor 30 and the second telescopic rod 32 are turned on. The second motor 30 drives the worm gear 31, which, through meshing with the worm wheel 29, drives the rotating rod 27 to rotate under the support of the rotating sleeve 28. The rotating rod 27 drives the second telescopic rod 32 to rotate. The second telescopic rod 32, through the bushing 33, drives the inner sealing cover 15 to rotate into the cone opening 14 inside the furnace opening 2. The second telescopic rod 32 retracts and pulls the inner sealing cover 15 into the inner side of the cone opening 14. The first telescopic rod 23 retracts, so that the first telescopic rod 23, under the support of the support rod 22, moves... When the connecting rod 21 is pulled downward, it rotates downward at the bottom of the slider 19, and rotates the outer cover 17 downward to the outside of the furnace opening 2 and aligns it with the second cone opening 16. The motor inside the slider 19 drives the roller 20, which moves the slider 19 inside the guide rail 18 until the screw 25 is inserted into the inside of the screw sleeve 26. The motor 24 drives the screw 25 to rotate. The movement of the screw 25 inside the screw sleeve 26 causes the outer cover 17 to be clamped onto the inner wall of the second cone opening 16. At the same time, the mutual pulling of the screw 25 and the screw sleeve 26 makes the inner cover 15 and the outer cover 17 respectively seal and clamp onto the inner sides of the first cone opening 14 and the second cone opening 16. This can quickly seal the furnace opening 2 without cumbersome tightening operations or the use of high-pressure clamping equipment to clamp the cover, thus improving work efficiency and reducing equipment investment.
[0027] like Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 8As shown, the bottom end of the connecting rod 21 is welded to the outer side of the outer cover 17. The support rod 22 is welded to the bottom of one end of the slider 19, and the bottom end of the support rod 22 extends to the bottom of the guide rail 18. The top end of the connecting rod 21 passes through the bottom of the guide rail 18 and is mounted on the inner side of the other end of the slider 19 via a pivot. One end of the telescopic rod 23 is mounted on the support rod 22 via a pivot, and the other end of the telescopic rod 23 is mounted on the connecting rod 21 via a pivot. The motor 24 is bolted to the inner side of the outer cover 17. A retaining sleeve is welded to the outer cover 17. One end of the screw 25 is bolted to the output shaft of the motor 24. A retaining ring is welded to the outer side of the screw 25, and the retaining sleeve is fitted onto the outer side of the retaining ring. A threaded sleeve 26 is welded to the inner cover 15. The other end of the screw 25 passes through the retaining sleeve and extends into the inner side of the threaded sleeve 26. On one side, the threaded sleeve 26 is threaded onto the outer side of the other end of the screw 25. The groove 40 is formed on the inner wall of the furnace opening 2. The rotating sleeve 28 is welded to the inner wall of the groove 40. Both ends of the rotating rod 27 are locked inside the rotating sleeve 28. The worm gear 29 is welded to the outer side of the rotating rod 27. The second motor 30 is bolted onto the inner wall of the groove 40. One end of the worm 31 is welded to the output shaft of the second motor 30. The worm 31 is locked outside the worm gear 29. The worm 31 meshes with the worm gear 29. The bushing 33 is welded to the outer side of the inner cover 15. One end of the second telescopic rod 32 is welded to the outer side of the rotating rod 27. The other end of the second telescopic rod 32 is mounted on the bushing 33 via a rotating shaft. There are two second telescopic rods 32, which are symmetrically distributed at the top and bottom of the threaded sleeve 26.
[0028] Understandably, during use, the vacuum pump 8 is turned on to completely extract the air from the furnace body 1. Then, the electric heating wire 7 is turned on, and the metal structures on the support plate 3 are heated by thermal radiation. These structures include steel used for fasteners in the automotive and wind power industries, steel used for high-performance machine tool guides, high-performance tunneling machine tool steel, lead-free wire products, high-strength cord steel products, gas shielding, pipelines, and railway weathering welding wire steel, until the required temperature is reached. After holding at that temperature for the required time, inert gas is introduced into the inside of the furnace body 1 through the inlet pipe 10 and connecting pipe 12 until the gas pressure inside the furnace body 1 reaches the required pressure value. The gas then flows through the air holes 5 and the bending plate 6 inside the furnace body 1, rapidly cooling the materials inside. The gas then returns to the cooling system through the return pipe 13. The cooled inert gas is then sent into the inner side of the furnace body 1 through the connecting pipe 12 to complete the heat treatment of the material. During the vacuuming process, the outer cover 17 is used to seal the cone opening 16, and the external atmospheric pressure is used to squeeze the outer cover 17 to increase the sealing pressure. When pressurizing the furnace body 1, the air pressure is used to squeeze the inner cover 15, and the inner cover 15 is clamped on the inner side of the cone opening 14. This can effectively use the tension between the screw 25 and the screw sleeve 26 and the air pressure to perform the sealing work, while effectively avoiding the air pressure acting on the screw 25, screw sleeve 26 and other fixed structures, thus effectively preventing the fixed structures from being deformed by external forces and damaged, ensuring the safety of the equipment, ensuring the reliability of the sealing work, and improving the durability of the equipment.
[0029] In the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.
[0030] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.
[0031] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0032] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.
Claims
1. A high-pressure gas quenching vacuum furnace for heat treatment of metal parts, characterized in that, include: A heat treatment assembly, comprising a furnace body (1) and a furnace opening (2), a support assembly mounted on the furnace body (1), the support assembly comprising a support plate (3) and a support plate (4), a heating assembly mounted on the furnace body (1), the heating assembly comprising a bending plate (6) and an electric heating wire (7), a vacuum assembly mounted on the furnace body (1), the vacuum assembly comprising a vacuum pump (8) and an air hole (5), a cooling assembly mounted on the outside of the furnace body (1), the cooling assembly comprising a cooler (9) and an inlet pipe (10), a connecting assembly mounted on the cooler (9), the connecting assembly comprising a connecting pipe (12) and a return pipe (13); A sealing assembly includes a first conical opening (14) and a second conical opening (16), both of which are located inside the furnace opening (2). A sealing assembly is installed inside the first conical opening (14) and the second conical opening (16). The sealing assembly includes an inner cover (15) and an outer cover (17). A sliding assembly is installed at the top of the furnace opening (2). The sliding assembly includes a guide rail (18) and a slider (19). A moving assembly is installed on the slider (19), including a connecting rod (21) and a roller (20). A lifting assembly is installed on the slider (19), including a support rod. (22) and telescopic rod one (23), the outer cover (17) is equipped with a pulling component, the pulling component includes motor one (24) and screw (25), the inner side of the furnace opening (2) is equipped with a connecting component, the connecting component includes groove (40) and rotating sleeve (28), the inner side of the furnace opening (2) is equipped with a rotating component, the rotating component includes rotating rod (27) and worm gear (29), the inner side of the groove (40) is equipped with a driving component, the driving component includes motor two (30) and worm gear (31), the rotating rod (27) is equipped with a movable component, the movable component includes telescopic rod two (32) and bushing (33); A one-way communication component, the one-way communication component includes a through hole (34) and a Tesla valve (37), the through hole (34) and the Tesla valve (37) are both opened on the inner side of the inner cover (15), the inner cover (15) has a limiting component opened on the inner side, the limiting component includes an inner cavity (35) and a conical cavity (36), the inner cavity (35) and the conical cavity (36) are equipped with a moving component, the moving component includes a piston (38) and a stopper (39).
2. The high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to claim 1, characterized in that: The support plate (3) is welded to the inner wall of the bottom of the furnace body (1). The top of the support plate (4) is welded to the bottom of the support plate (3). The bottom of the support plate (4) is welded to the inner wall of the bottom of the furnace body (1). The air hole (5) is opened on the inner side of the support plate (3). The air hole (5) is distributed at both ends of the support plate (3). The bending plate (6) is welded to the inner wall of the top of one end of the furnace body (1). The electric heating wire (7) is welded to the top of the furnace body (1). The vacuum pump (8) is installed at the bottom of one end of the furnace body (1) by bolts. The vacuum pump (8) is connected to the bottom of one end of the furnace body (1).
3. The high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to claim 2, characterized in that: The cooler (9) is installed on the outside of the furnace body (1). One end of the connecting pipe (12) and the return pipe (13) are respectively welded to the two ends of the cooler (9). The other end of the connecting pipe (12) and the return pipe (13) are respectively welded to the bottom of the two ends of the furnace body (1). The bottom of the two ends of the furnace body (1) are respectively connected to the cooler (9) through the connecting pipe (12) and the return pipe (13). The inlet pipe (10) is welded to the connecting pipe (12). The inlet pipe (10) is connected to the connecting pipe (12). A valve (11) is installed on the inlet pipe (10).
4. The high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to claim 1, characterized in that: One end of the furnace opening (2) is welded to the other end of the furnace body (1). The furnace opening (2) is connected to the inner side of the furnace body (1). The first conical opening (14) is opened on the inner wall of one end of the furnace opening (2). The second conical opening (16) is opened on the inner wall of the other end of the furnace opening (2). The outer side of the inner cover (15) is stuck on the inner wall of the first conical opening (14). The outer side of the outer cover (17) is stuck on the inner wall of the second conical opening (16). The guide... One end of the rail (18) is welded to the outer side of the other end of the furnace body (1). The slider (19) is locked inside the guide rail (18). The roller (20) is mounted on the outer side of the slider (19) through a bearing. A motor is installed inside the slider (19). The roller (20) is keyed to the output shaft of the motor. Teeth are provided on the outer side of the roller (20). Gutters are provided on the inner side of the guide rail (18). The teeth mesh with the grooves.
5. The high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to claim 4, characterized in that: The bottom end of the connecting rod (21) is welded to the outer side of the outer cover (17), the support rod (22) is welded to the bottom of one end of the slider (19), the bottom end of the support rod (22) extends to the bottom of the guide rail (18), the top end of the connecting rod (21) passes through the bottom of the guide rail (18) and is installed on the inner side of the other end of the slider (19) through a pivot, one end of the telescopic rod (23) is installed on the support rod (22) through a pivot, and the other end of the telescopic rod (23) is installed on the connecting rod (21) through a pivot.
6. The high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to claim 5, characterized in that: The motor (24) is bolted to the inner side of the outer cover (17). A retainer is welded to the outer cover (17). One end of the screw (25) is bolted to the output shaft of the motor (24). A retaining ring is welded to the outer side of the screw (25). The retainer is fitted on the outer side of the retaining ring. A threaded sleeve (26) is welded to the inner cover (15). The other end of the screw (25) passes through the retainer and extends to the inner side of the threaded sleeve (26). The threaded sleeve (26) is threaded onto the outer side of the other end of the screw (25).
7. The high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to claim 6, characterized in that: The groove (40) is formed on the inner wall of the furnace opening (2). The rotating sleeve (28) is welded to the inner wall of the groove (40). Both ends of the rotating rod (27) are locked inside the rotating sleeve (28). The worm wheel (29) is welded to the outer side of the rotating rod (27). The second motor (30) is installed on the inner wall of the groove (40) by bolts. One end of the worm (31) is welded to the output shaft of the second motor (30). The worm (31) is locked outside the worm wheel (29). The worm (31) meshes with the worm wheel (29).
8. The high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to claim 7, characterized in that: The bushing (33) is welded to the outer side of the inner cover (15), one end of the telescopic rod (32) is welded to the outer side of the rotating rod (27), and the other end of the telescopic rod (32) is installed on the bushing (33) through the rotating shaft. There are two telescopic rods (32), and the two telescopic rods (32) are symmetrically distributed on the top and bottom of the screw sleeve (26).
9. The high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to claim 1, characterized in that: The through hole (34), the inner cavity (35) and the conical cavity (36) are all opened on the inner side of the inner cover (15). One end of the through hole (34) is connected to one side of the inner cover (15), the other end of the through hole (34) is connected to one end of the inner cavity (35), the other end of the inner cavity (35) is connected to one end of the conical cavity (36), and the conical cavity (36) is connected to the other side of the inner cover (15).
10. The high-pressure gas quenching vacuum furnace for heat treatment of metal parts according to claim 9, characterized in that: The stopper (39) is integrally formed on one end of the piston (38). The outer side of the stopper (39) is clamped on the inner wall of the conical cavity (36). The other end of the piston (38) passes through the conical cavity (36) and extends to the inner side of the inner cavity (35). The outer side of the piston (38) is movably sealed on the inner wall of the inner cavity (35). The Tesla valve (37) is opened on the inner side of the inner cover (15). One end of the Tesla valve (37) is connected to one end of the inner cavity (35). The other end of the Tesla valve (37) is connected to the inner side of the conical cavity (36). The Tesla valve (37) is evenly distributed around the inner cavity (35).