Heating equipment for artificial diamond production

Abstract

The invention relates to the technical field of artificial diamonds, in particular to heating equipment for artificial diamond production. The heating equipment for artificial diamond production comprises a frame body assembly, high-pressure and high-temperature synthesis equipment, a hot air circulation assembly and four reheating assemblies. Preheated hot air can be uniformly distributed to all parts of the high-pressure and high-temperature synthesis equipment, local overheating or cooling is avoided, the overall heating uniformity is improved, it is ensured that stable high temperature is maintained in the whole synthesis process, the influence of local overheating on the reaction stability is reduced, and meanwhile through heat recovery and cyclic utilization, the energy consumption is reduced. In addition, airflow heating and direct contact type heating are combined, the heating efficiency and effect are further improved, the heating temperature is rapidly increased, rapid temperature rising and heating of the high-pressure and high-temperature synthesis equipment are achieved, and the service life of the high-pressure and high-temperature synthesis equipment is prolonged. And the temperature rising range of the high-pressure and high-temperature synthesis equipment is expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of synthetic diamond, and particularly provides a heating device for the production of synthetic diamond. Background Art

[0002] The high-pressure high-temperature synthesis equipment is the core equipment for preparing synthetic diamond, which consists of a high-pressure furnace and a rotary press. The high-pressure furnace can make the carbon source and the metal catalyst react violently in a short time at a high temperature of 1200°C to 2200°C and a high pressure of 60 to 70 GPa, generating massive synthetic diamond. When the temperature required for synthesizing diamond exceeds the capacity of the main heating system or when it is necessary to quickly reach the synthesis temperature, an external heater can be added to provide preheating or auxiliary heating for the high-pressure high-temperature synthesis equipment, so as to ensure that the required high temperature can be quickly reached before applying high pressure or under high-pressure conditions, and to ensure that a stable high temperature is maintained throughout the synthesis process.

[0003] However, due to the possible heat loss of the existing external heaters during the heating process, the heating efficiency is reduced, and it is unable to quickly adapt to the changes in reaction conditions, resulting in problems such as local overheating or cooling, which affect the stability of the reaction. Summary of the Invention

[0004] Based on this, it is necessary to provide a heating device for the production of synthetic diamond to solve at least one technical problem in the background art.

[0005] A heating device for artificial diamond production, comprising a frame assembly, a high-pressure and high-temperature synthesis device, a hot air circulation assembly and four reheating assemblies. The frame assembly includes an external heating frame, two upper connecting pipes and two lower connecting pipes. The interior of the external heating frame is hollow to form a synthesis installation cavity. Upper heating ventilation grooves are respectively recessed at the top of both sides of the synthesis installation cavity, and lower heating ventilation grooves are respectively recessed at the bottom of both sides of the synthesis installation cavity. A lower connecting preset groove is recessed at one end of the top surface of the lower heating ventilation groove. Lower pipe installation grooves and upper pipe installation grooves are respectively recessed at intervals along the width direction at one end of both sides of the top surface of the external heating frame adjacent to the lower connecting preset groove. A lower connecting docking groove is recessed on the outer side of the bottom surface of the lower pipe installation groove, and the lower connecting docking groove is arranged opposite to the lower connecting preset groove. An upper connecting groove is recessed on the outer side of the bottom surface of the upper pipe installation groove, and both the upper connecting groove and the lower connecting docking groove are communicated with the upper heating ventilation groove. The top of the external heating frame is hollow to form a return cavity. A plurality of return communication holes are recessed in an array on the bottom surface of the return cavity, and the plurality of return communication holes are communicated with the synthesis installation cavity. A plurality of return holes are recessed in an array at one end of the top surface of the return cavity away from the lower pipe installation groove, and a return connecting pipe is protruded on each return hole. The two upper connecting pipes are respectively installed in the two upper pipe installation grooves, and the bottom end of each upper connecting pipe passes through the upper connecting groove and is arranged at the top of the upper heating ventilation groove. The two lower connecting pipes are respectively installed in the two lower heating ventilation grooves, and the bottom end of each lower connecting pipe passes through the lower connecting docking groove and the lower connecting preset groove and is arranged at the top of the lower heating ventilation groove. The high-pressure and high-temperature synthesis device is installed in the synthesis installation cavity, the hot air circulation assembly is installed on the top of the external heating frame, and the four reheating assemblies are respectively installed in the two upper heating ventilation grooves and the two lower heating ventilation grooves.

[0006] As a further improvement of the present invention, an upper air inlet pipe is provided at the top of each upper connecting pipe, and an upper shunt pipe is provided at the bottom of each upper connecting pipe. The upper shunt pipe is arranged at the top of the upper heating ventilation groove, and five upper equalizing ports are protruded at intervals along the length direction on the bottom surface of the upper shunt pipe. A lower air inlet pipe is provided at the top of each lower connecting pipe, and a lower shunt pipe is provided at the bottom of each lower connecting pipe. The lower shunt pipe is arranged at the top of the lower heating ventilation groove, and five lower equalizing ports are protruded at intervals along the length direction on the bottom surface of the lower shunt pipe.

[0007] As a further improvement of the present invention, the hot air circulation assembly includes an air pump, a hot air blower, a hot air main pipe, four hot air equalizing pipes and a circulation pipe. The bottom of the air pump is installed on one side of the top surface of the external heating frame, the bottom of the hot air blower is installed on the other side of the top surface of the external heating frame, and the input end of the hot air blower is connected to the output end of the air pump. One end of the hot air main pipe is connected to the output end of the hot air blower, one ends of the four hot air equalizing pipes are all connected to the other end of the hot air main pipe, and the other ends of the four hot air equalizing pipes are respectively connected to the two upper air inlet pipes and the two lower air inlet pipes through pipes. One end of the circulation pipe is connected to the input end of the air pump, and the other end of the circulation pipe is provided with a plurality of circulation connection ports, and the plurality of circulation connection ports are respectively connected to the plurality of return connection pipes through pipes.

[0008] As a further improvement of the present invention, each reheating component includes five reheating air deflectors, and the five reheating air deflectors are respectively and spacedly installed in the lower heating ventilation groove or the upper heating ventilation groove along the length direction.

[0009] As a further improvement of the present invention, each reheating air deflector includes a secondary heating sub-deflecting part and a reheating equalizing part. The inner side of the secondary heating sub-deflecting part is installed in the lower heating ventilation groove or the upper heating ventilation groove, and the inner side of the reheating equalizing part is installed on the outer side of the secondary heating sub-deflecting part.

[0010] As a further improvement of the present invention, each secondary heating sub-deflecting part includes an air deflector and shunt box, a secondary heating cover, and two secondary heating elements. The inner side of the air deflector and shunt box is installed in the lower heating ventilation groove or the upper heating ventilation groove. The interior of the air deflector and shunt box is hollow to form a shunt cavity. A central part of the top surface of the shunt cavity is concavely provided with an air inlet groove, and the air inlet groove is connected to the bottom end of the lower equalizing port or the upper equalizing port. A conical shunt block is arranged at the top of the shunt cavity, and the conical shunt block is located directly below the air inlet groove. Four hot air equalizing grooves are concavely provided at intervals along the height direction on the outer side of the shunt cavity. The inner side of the secondary heating cover is installed on the outer side of the air deflector and shunt box. Heating mounting plates are respectively concavely provided at the top and bottom of both ends of the outer side of the secondary heating cover. A vertical adjustment sliding groove is concavely provided on the side wall of each heating mounting plate. Both ends of the two secondary heating elements are respectively slidably installed in the four vertical adjustment sliding grooves.

[0011] As a further improvement of the present invention, each secondary heating element includes a secondary mounting cross bar, two secondary heating mounting vertical bars, two secondary heating connecting bars, four air guiding arc plates, and four first electric heating wires. Both inner ends of the secondary mounting cross bar are respectively slidably installed in the two vertical adjustment sliding grooves. The outer sides of the two secondary heating mounting vertical bars are respectively installed at both inner ends of the secondary mounting cross bar. Both ends of the two secondary heating connecting bars are respectively installed at the top and bottom of the two secondary heating mounting vertical bars. The inner sides of the four air guiding arc plates are respectively installed at both outer ends of the two secondary heating connecting bars. A first heating wire mounting platform is convexly provided in the middle of the outer side of each air guiding arc plate. A plurality of secondary heating convection grooves are concavely provided in an array at the top and bottom of the side wall of each air guiding arc plate. The four first electric heating wires are respectively installed in the four first heating wire mounting platforms.

[0012] As a further improvement of the present invention, each reheating unit includes a reheating box and four reheating adjustment elements. The inner side of the reheating box is installed on the outer side of the secondary heating cover. The inside of the reheating box is hollow to form a hollow cavity, and the hollow cavity is communicated with the inner cavity of the secondary heating cover. Four reheating air outlets are recessed at intervals along the height direction on the outer side of the hollow cavity, and each reheating air outlet is communicated with the synthetic installation cavity. Four vertical strip-shaped chutes are respectively recessed at both ends of the outer side of the hollow cavity, and the eight vertical strip-shaped chutes are respectively located at both ends of the four reheating air outlets. Eight reheating installation strips are respectively arranged at intervals along the height direction on the inner side of the hollow cavity, and the eight reheating installation strips are respectively located at the top and middle of the four reheating air outlets. The four reheating adjustment elements are respectively installed in the eight reheating installation strips and the eight vertical strip-shaped chutes.

[0013] As a further improvement of the present invention, each reheating adjustment element includes two reheating air guide arc plates, two reheating wires and a heat conduction adjustment plate. The top and bottom of the outer sides of the two reheating air guide arc plates are respectively installed at one end of the two reheating installation strips. A second heating wire installation platform is convexly provided in the middle of the outer side of each reheating air guide arc plate. A plurality of reheating convection grooves are recessed in an array at the top and bottom of the side wall of each reheating air guide arc plate. The two reheating wires are respectively installed in the two second heating wire installation platforms. Adjusting sliding columns are respectively convexly provided at both ends of the outer side of the heat conduction adjustment plate. Air guiding adjustment grooves are respectively recessed at both ends of the top of the inner side of the heat conduction adjustment plate. An inclined air guiding surface is convexly provided at the top of the inner wall of the air guiding adjustment groove. An arc-shaped air discharge surface is recessed at the bottom of the inner side of the air guiding adjustment groove. The two adjusting sliding columns are respectively slidably installed in the two vertical strip-shaped chutes, and the heat conduction adjustment plate is arranged at the top of the reheating air outlet.

[0014] As a further improvement of the present invention, a restoring spring is arranged between the outer wall of the adjusting sliding column and the top surface of the vertical strip-shaped chute.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention uses the frame assembly, the hot air circulation assembly and the four reheating assemblies to cooperate to ensure the generation of preheated hot air and evenly distribute the preheated hot air to various parts of the high-pressure and high-temperature synthesis equipment, avoiding local overheating or cooling, improving the overall heating uniformity, ensuring the maintenance of a stable high temperature throughout the synthesis process, reducing the influence of local overheating on the stability of the reaction. At the same time, through heat recovery and recycling, the demand for external energy is reduced, thereby reducing the overall energy consumption and improving the economy of the system.

[0016] 2. The present invention can combine air flow heating and direct contact heating to form a dual heating method, further improving the heating efficiency and effect, quickly increasing the heating temperature, significantly shortening the heating time, realizing the rapid heating of the high-pressure and high-temperature synthesis equipment, ensuring the speed of rapid heating and increasing the heating range of the high-pressure and high-temperature synthesis equipment. Description of the Drawings

[0017] Figure 1 A perspective view of an embodiment of the present invention.

[0018] Figure 2 A perspective view of an embodiment of the present invention after removing the high-pressure and high-temperature synthesis equipment.

[0019] Figure 3 An internal view of the frame assembly in an embodiment of the present invention.

[0020] Figure 4 An internal view of the frame assembly in another embodiment of the present invention.

[0021] Figure 5 A perspective view of the reheating air guide in an embodiment of the present invention.

[0022] Figure 6 An exploded view of the reheating air guide in an embodiment of the present invention.

[0023] Figure 7 A broken view of the secondary heating and dividing part in an embodiment of the present invention.

[0024] Figure 8 A perspective view of the reheating and equalizing part in an embodiment of the present invention.

[0025] Figure 9 is Figure 8 an enlarged view of part A in

[0026] In the figure: 10. Frame assembly; 11. Outer heating frame; 12. Upper connecting pipe; 13. Lower connecting pipe; 14. Synthesis installation cavity; 141. Upper heating ventilation groove; 142. Lower heating ventilation groove; 143. Lower connecting preset groove; 111. Lower pipe installation groove; 112. Upper pipe installation groove; 113. Lower connecting docking groove; 114. Upper connecting groove; 15. Return cavity; 151. Return connecting hole; 152. Return hole; 153. Return connecting pipe; 120. Upper air inlet pipe; 121. Upper shunt pipe; 122. Upper equalizing port; 130. Lower air inlet pipe; 131. Lower shunt pipe; 132. Lower equalizing port; 20. High-pressure and high-temperature synthesis equipment; 30. Hot air circulation assembly; 31. Air pump; 32. Hot air blower; 33. Hot air main pipe; 34. Hot air equalizing pipe; 35. Circulation pipe; 351. Circulation connection port; 40. Reheating assembly; 50. Reheating air guide; 60. Secondary heating and guiding part; 61. Air guide and shunt box; 62. Secondary heating cover; 63. Secondary heating element; 611. Shunt cavity; 612. Air inlet groove; 613. Conical shunt block; 614. Hot air equalizing groove; 621. Heating installation plate; 622. Vertical adjustment sliding groove; 631. Secondary installation cross bar; 632. Secondary heating installation vertical bar; 633. Secondary heating connection bar; 634. Air guide arc plate; 635. First electric heating wire; 630. Secondary heating convection groove; 70. Reheating and equalizing part; 71. Reheating box; 72. Reheating adjustment element; 711. Hollow cavity; 712. Reheating air outlet groove; 713. Vertical strip-shaped sliding groove; 714. Reheating installation bar; 721. Reheating air guide arc plate; 722. Reheating wire; 723. Heat conduction adjustment plate; 720. Reheating convection groove; 724. Adjustment sliding column; 725. Air guiding adjustment groove; 726. Inclined air guiding surface; 727. Arc-shaped air discharging surface. Detailed implementation mode

[0027] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] Please refer to Figures 1 to 9 , a heating device for artificial diamond production, comprising a frame assembly 10, a high-pressure and high-temperature synthesis device 20, a hot air circulation assembly 30 and four reheating assemblies 40. The frame assembly 10 includes an external heating frame 11, two upper connecting pipes 12 and two lower connecting pipes 13. The interior of the external heating frame 11 is hollow to form a synthesis installation cavity 14. Upper heating ventilation grooves 141 are respectively recessed at the top of both sides of the synthesis installation cavity 14, and lower heating ventilation grooves 142 are respectively recessed at the bottom of both sides of the synthesis installation cavity 14. A lower connecting preset groove 143 is recessed at one end of the top surface of the lower heating ventilation groove 142. Lower pipe installation grooves 111 and upper pipe installation grooves 112 are respectively recessed at intervals along the width direction at one end of both sides of the top surface of the external heating frame 11 adjacent to the lower connecting preset groove 143. A lower connecting docking groove 113 is recessed on the outer side of the bottom surface of the lower pipe installation groove 111, and the lower connecting docking groove 113 is arranged opposite to the lower connecting preset groove 143. An upper connecting groove 114 is recessed on the outer side of the bottom surface of the upper pipe installation groove 112, and both the upper connecting groove 114 and the lower connecting docking groove 113 are communicated with the upper heating ventilation groove 141. The top of the external heating frame 11 is hollow to form a return cavity 15. A plurality of return communication holes 151 are recessed in an array on the bottom surface of the return cavity 15, and the plurality of return communication holes 151 are communicated with the synthesis installation cavity 14. A plurality of return holes 152 are recessed in an array at one end of the top surface of the return cavity 15 away from the lower pipe installation groove 111. A return connecting pipe 153 is protruded on each return hole 152. The two upper connecting pipes 12 are respectively installed in the two upper pipe installation grooves 112, and the bottom end of each upper connecting pipe 12 passes through the upper connecting groove 114 and is arranged at the top of the upper heating ventilation groove 141. The two lower connecting pipes 13 are respectively installed in the two lower heating ventilation grooves 142, and the bottom end of each lower connecting pipe 13 passes through the lower connecting docking groove 113 and the lower connecting preset groove 143 and is arranged at the top of the lower heating ventilation groove 142. The high-pressure and high-temperature synthesis device 20 is installed in the synthesis installation cavity 14. The hot air circulation assembly 30 is installed on the top of the external heating frame 11. The four reheating assemblies 40 are respectively installed in the two upper heating ventilation grooves 141 and the two lower heating ventilation grooves 142.

[0031] At the top of each upper connecting pipe 12, an upper air inlet pipe 120 is provided. At the bottom of each upper connecting pipe 12, an upper shunt pipe 121 is provided. The upper shunt pipe 121 is arranged on the top of the upper heating ventilation groove 141, and five upper equalizing ports 122 are convexly arranged at intervals along the length direction of the bottom surface of the upper shunt pipe 121. At the top of each lower connecting pipe 13, a lower air inlet pipe 130 is provided. At the bottom of each lower connecting pipe 13, a lower shunt pipe 131 is provided. The lower shunt pipe 131 is arranged on the top of the lower heating ventilation groove 142, and five lower equalizing ports 132 are convexly arranged at intervals along the length direction of the bottom surface of the lower shunt pipe 131.

[0032] The hot air circulation assembly 30 includes an air pump 31, a hot air blower 32, a hot air main pipe 33, four hot air equalizing pipes 34 and a circulation pipe 35. The bottom of the air pump 31 is installed on one side of the top surface of the outer heating frame 11. The bottom of the hot air blower 32 is installed on the other side of the top surface of the outer heating frame 11, and the input end of the hot air blower 32 is connected to the output end of the air pump 31. One end of the hot air main pipe 33 is connected to the output end of the hot air blower 32. One end of each of the four hot air equalizing pipes 34 is connected to the other end of the hot air main pipe 33. The other ends of the four hot air equalizing pipes 34 are respectively connected to the two upper air inlet pipes 120 and the two lower air inlet pipes 130 through pipes. One end of the circulation pipe 35 is connected to the input end of the air pump 31, and the other end of the circulation pipe 35 is provided with a plurality of circulation connection ports 351. The plurality of circulation connection ports 351 are respectively connected to a plurality of return connection pipes 153 through pipes.

[0033] Each reheating assembly 40 includes five reheating air deflectors 50, and the five reheating air deflectors 50 are respectively installed at intervals along the length direction in the lower heating ventilation groove 142 or the upper heating ventilation groove 141.

[0034] Each reheating air deflector 50 includes a secondary heating sub-deflecting part 60 and a reheating equalizing part 70. The inner side of the secondary heating sub-deflecting part 60 is installed in the lower heating ventilation groove 142 or the upper heating ventilation groove 141, and the inner side of the reheating equalizing part 70 is installed on the outer side of the secondary heating sub-deflecting part 60.

[0035] Each secondary heating and guiding part 60 includes a wind guiding and shunting box 61, a secondary heating cover 62 and two secondary heating elements 63. The inner side of the wind guiding and shunting box 61 is installed in the lower heating ventilation groove 142 or the upper heating ventilation groove 141. The inside of the wind guiding and shunting box 61 is hollow to form a shunting cavity 611. A wind inlet groove 612 is concavely provided in the middle of the top surface of the shunting cavity 611. The wind inlet groove 612 is connected to the bottom end of the lower equalizing port 132 or the upper equalizing port 122. A conical shunting block 613 is provided at the top of the shunting cavity 611, and the conical shunting block 613 is located directly below the wind inlet groove 612. Four hot air equalizing grooves 614 are concavely provided at intervals along the height direction on the outer side of the shunting cavity 611. The inner side of the secondary heating cover 62 is installed on the outer side of the wind guiding and shunting box 61. Heating mounting plates 621 are concavely provided at the top and bottom of both ends of the outer side of the secondary heating cover 62. A vertical adjustment sliding groove 622 is concavely provided on the side wall of each heating mounting plate 621. The two ends of the two secondary heating elements 63 are respectively slidably installed in the four vertical adjustment sliding grooves 622.

[0036] Each secondary heating element 63 includes a secondary mounting cross bar 631, two secondary heating mounting vertical bars 632, two secondary heating connecting bars 633, four wind guiding arc-shaped plates 634 and four first electric heating wires 635. The two inner ends of the secondary mounting cross bar 631 are respectively slidably installed in the two vertical adjustment sliding grooves 622. The outer sides of the two secondary heating mounting vertical bars 632 are respectively installed at the two inner ends of the secondary mounting cross bar 631. The two ends of the two secondary heating connecting bars 633 are respectively installed at the top and bottom of the two secondary heating mounting vertical bars 632. The inner sides of the four wind guiding arc-shaped plates 634 are respectively installed at the two outer ends of the two secondary heating connecting bars 633. A first heating wire mounting platform is convexly provided in the middle of the outer side of each wind guiding arc-shaped plate 634. A plurality of secondary heating convection grooves 630 are concavely provided in an array at the top and bottom of the side wall of each wind guiding arc-shaped plate 634. The four first electric heating wires 635 are respectively installed in the four first heating wire mounting platforms.

[0037] Each reheating and equalizing part 70 includes a reheating box 71 and four reheating adjustment elements 72. The inner side of the reheating box 71 is installed on the outer side of the secondary heating cover 62. The inside of the reheating box 71 is hollow to form a hollow cavity 711, and the hollow cavity 711 is communicated with the inner cavity of the secondary heating cover 62. Four reheating air outlet grooves 712 are concavely provided at intervals along the height direction on the outer side of the hollow cavity 711, and each reheating air outlet groove 712 is communicated with the synthetic installation cavity 14. Four vertical strip-shaped sliding grooves 713 are concavely provided at both ends of the outer side of the hollow cavity 711, and the eight vertical strip-shaped sliding grooves 713 are respectively located at both ends of the four reheating air outlet grooves 712. Eight reheating mounting strips 714 are respectively arranged at intervals along the height direction on the inner side of the hollow cavity 711, and the eight reheating mounting strips 714 are respectively located at the top and middle of the four reheating air outlet grooves 712. The four reheating adjustment elements 72 are respectively installed in the eight reheating mounting strips 714 and the eight vertical strip-shaped sliding grooves 713.

[0038] Each reheating adjustment element 72 includes two reheating air guiding arc plates 721, two reheating wires 722 and a heat conduction adjustment plate 723. The top and bottom of the outer sides of the two reheating air guiding arc plates 721 are respectively installed at one end of the two reheating installation bars 714. A second heating wire installation platform protrudes from the middle of the outer side of each reheating air guiding arc plate 721. A plurality of reheating convection grooves 720 are arrayed and recessed at the top and bottom of the side walls of each reheating air guiding arc plate 721. The two reheating wires 722 are respectively installed in the two second heating wire installation platforms. The outer ends of the two sides of the heat conduction adjustment plate 723 respectively protrude with adjustment sliding columns 724. The top ends of the inner sides of the heat conduction adjustment plate 723 are respectively recessed with air guiding adjustment grooves 725. An inclined air guiding surface 726 protrudes from the top of the inner wall of the air guiding adjustment groove 725. An arc-shaped air discharging surface 727 is recessed at the bottom of the inner side of the air guiding adjustment groove 725. The two adjustment sliding columns 724 are respectively slidably installed in the two vertical strip-shaped sliding grooves 713, and the heat conduction adjustment plate 723 is arranged at the top of the reheating air outlet groove 712.

[0039] A restoring spring is arranged between the outer wall of the adjustment sliding column 724 and the top surface of the vertical strip-shaped sliding groove 713.

[0040] For example, in one embodiment: The multiple reheating air guiding arc plates 721 and the multiple air guiding arc plates 634 are arranged in an interleaved manner, and the air guiding arc plate 634 and the heat conduction adjustment plate 723 are arranged oppositely.

[0041] For example, in one embodiment: Thermal insulation sealing rings are arranged at the outer edges of both ends of the synthetic installation cavity 14, and the inner walls of the thermal insulation sealing rings are connected to the outer walls of both ends of the high-pressure and high-temperature synthesis device 20. A micro motor is arranged at one end of the inner side of the secondary installation cross bar 631, and the output shaft of the micro motor is in fit connection with the inner wall of one of the vertical adjustment sliding grooves 622. The secondary heating connection bar 633 and the hot air equalizing groove 614 are arranged oppositely. The outer side of the heat conduction adjustment plate 723 protrudes with a contact heat conduction block, and the inner side of the contact heat conduction block is slidably arranged in the reheating air outlet groove 712, and the outer side of the contact heat conduction block is slidably attached to the outer wall of the high-pressure and high-temperature synthesis device 20.

[0042] For example, in one embodiment: when it is necessary to uniformly preheat and raise the temperature of the high-pressure and high-temperature synthesis equipment 20, the air pump 31 and the hot air blower 32 are started, thereby generating hot air for temperature rise, and the hot air for temperature rise is evenly transported along the main hot air pipe 33 and the four hot air equalizing pipes 34 to the two upper connecting pipes 12 and the two lower connecting pipes 13, and then evenly distributed to the twenty re-heating air guides 50 through the two upper connecting pipes 12 and the two lower connecting pipes 13. When the hot air for temperature rise flows out through the lower equalizing port 132 or the upper equalizing port 122 and enters the air inlet groove 612, it will enter the shunt cavity 611, and is shunted by the conical shunt block 613 and fills the entire shunt cavity 611, and then evenly flows out through the four hot air equalizing grooves 614 into the inner cavity of the secondary heating cover 62. When the hot air for temperature rise flows out from the four hot air equalizing grooves 614, the multiple first electric heating wires 635 and the multiple re-heating wires 722 will be started synchronously, so that part of the hot air for temperature rise will flow through the multiple secondary heating convection grooves 630 to the first electric heating wires 635 for re-heating, and the other part of the hot air for temperature rise will be shunted and guided by the air guiding arc plate 634 and directly flow out to the re-heating air guiding arc plate 721 and the re-heating wires 722 of the re-heating adjustment element 72, and the other part of the hot air for temperature rise is heated by the re-heating wires 722, realizing the uniform re-heating of the whole hot air for temperature rise, forming preheated hot air. Subsequently, it then flows out from the four re-heating air outlet grooves 712 into the synthesis installation cavity 14 to uniformly raise the temperature of the high-pressure and high-temperature synthesis equipment 20. At the same time, the multiple first electric heating wires 635 and the multiple re-heating wires 722 will quickly and evenly heat both sides of the synthesis installation cavity 14, further accelerating the uniform temperature-raising ability of the high-pressure and high-temperature synthesis equipment 20.

[0043] In addition, the preheated hot air after heating and raising the temperature of the high-pressure and high-temperature synthesis equipment 20 will enter the return cavity 15 through the multiple return communication holes 151, and then enter the multiple circulation connection ports 351 through the multiple return holes 152 and the multiple return connecting pipes 153, and then return to the air pump 31 and the hot air blower 32 through the circulation pipe 35, improving the heat of the hot air for temperature rise, saving energy, and increasing the heating rate.

[0044] For example, in one embodiment: when rapid heating of the high-pressure and high-temperature synthesis device 20 is required, multiple first electric heating wires 635 and multiple reheating wires 722 will increase the heating rate. At the same time, the micro motors in the secondary installation cross bar 631 will start, and then drive the secondary heating element 63 to move along the vertical adjustment chute 622 until the multiple reheating air guiding arc plates 721 are respectively arranged opposite to the multiple air guiding arc plates 634. As a result, part of the heated air will enter the interior of the air guiding arc plate 634 from the multiple secondary heating convection grooves 630, and the rapid heating air flow will be achieved through the rapid heating of the first electric heating wire 635 and the reheating wire 722, and then flow out from the multiple reheating convection grooves 720. At the same time, another part of the heated air flowing out from the hot air equalizing groove 614 will no longer be blocked by the air guiding arc plate 634, but directly impact the heat conduction adjustment plate 723. Since the top of the inner wall of the air guiding adjustment groove 725 is convex with an inclined air guiding surface 726, the heated air will be guided by the inclined air guiding surface 726 to push the heat conduction adjustment plate 723 to move downward along the vertical strip chute 713, and the restoring spring will extend until the bottom of the inner side of the heat conduction adjustment plate 723 fits against the outer wall of the reheating air guiding arc plate 721, thereby enabling the heat conduction adjustment plate 723 to be rapidly heated. At the same time, part of the rapidly heated air flow flowing out from the multiple reheating convection grooves 720 located at the top of the reheating air guiding arc plate 721 will uniformly heat the heat conduction adjustment plate 723, enabling the heat conduction adjustment plate 723 to achieve rapid and uniform heating. Also, since the outer side of the contact heat conduction block of the heat conduction adjustment plate 723 is slidably attached to the outer wall of the high-pressure and high-temperature synthesis device 20, direct contact rapid heating of the high-pressure and high-temperature synthesis device 20 is achieved, realizing dual rapid heating of the high-pressure and high-temperature synthesis device 20 through air flow heating and direct contact, ensuring the speed of rapid heating and increasing the heating range of the high-pressure and high-temperature synthesis device 20.

[0045] Installation process: Install the two upper connecting pipes 12 into the two upper pipe installation grooves 112 respectively, and the bottom end of each upper connecting pipe 12 passes through the upper connecting groove 114 and is arranged on the top of the upper heating and ventilation groove 141. Install the two lower connecting pipes 13 into the two lower heating and ventilation grooves 142 respectively, and the bottom end of each lower connecting pipe 13 passes through the lower connecting docking groove 113 and the lower connecting preset groove 143 and is arranged on the top of the lower heating and ventilation groove 142. Install the bottom of the air pump 31 on one side of the top surface of the outer heating frame 11, and install the bottom of the hot air blower 32 on the other side of the top surface of the outer heating frame 11. The input end of the hot air blower 32 is connected to the output end of the air pump 31. One end of the hot air main pipe 33 is connected to the output end of the hot air blower 32. One end of each of the four hot air equalizing pipes 34 is connected to the other end of the hot air main pipe 33. The other ends of the four hot air equalizing pipes 34 are respectively connected to the two upper air inlet pipes 120 and the two lower air inlet pipes 130 through pipes. One end of the circulation pipe 35 is connected to the input end of the air pump 31. The other end of the circulation pipe 35 is provided with a plurality of circulation connection ports 351. The plurality of circulation connection ports 351 are respectively connected to a plurality of return connection pipes 153 through pipes. Install the five reheating air deflectors 50 at intervals along the length direction in the lower heating and ventilation groove 142 or the upper heating and ventilation groove 141. Install the inner side of the air deflector and shunt box 61 in the lower heating and ventilation groove 142 or the upper heating and ventilation groove 141. Install the inner side of the secondary heating cover 62 outside the air deflector and shunt box 61. The two inner ends of the secondary installation cross bar 631 are respectively slidably installed in the two vertical adjustment sliding grooves 622. The outer sides of the two secondary heating installation vertical bars 632 are respectively installed at the two inner ends of the secondary installation cross bar 631. The two ends of the two secondary heating connection bars 633 are respectively installed at the top and bottom of the two secondary heating installation vertical bars 632. The inner sides of the four air deflector arc plates 634 are respectively installed at the two outer ends of the two secondary heating connection bars 633. The four first electric heating wires 635 are respectively installed in the four first heating wire installation platforms. Install the inner side of the reheating box 71 outside the secondary heating cover 62. The outer top and bottom of the two reheating air deflector plates 721 are respectively installed at one end of the two reheating installation bars 714. The two reheating wires 722 are respectively installed in the two second heating wire installation platforms. The two adjustment sliding columns 724 are respectively slidably installed in the two vertical strip-shaped sliding grooves 713, and the heat conduction adjustment plate 723 is arranged on the top of the reheating air outlet groove 712.

[0046] The present invention can achieve: 1. The present invention can ensure the generation of preheated hot air by the cooperation of the frame assembly 10, the hot air circulation assembly 30 and the four reheating assemblies 40, and evenly distribute the preheated hot air to each part of the high-pressure and high-temperature synthesis device 20, avoiding local overheating or cooling, improving the overall heating uniformity, ensuring the maintenance of a stable high temperature during the whole synthesis process, reducing the influence of local overheating on the reaction stability. At the same time, through heat recovery and recycling, the demand for external energy is reduced, thereby reducing the overall energy consumption and improving the economy of the system.

[0047] 2. The present invention can combine air flow heating and direct contact heating to form a dual heating method, further improving the heating efficiency and effect, rapidly increasing the heating temperature, and significantly shortening the heating time, achieving rapid temperature rise heating of the high-pressure and high-temperature synthesis equipment 20, ensuring the speed of rapid heating and expanding the temperature rise range of the high-pressure and high-temperature synthesis equipment 20.

[0048] The above-described embodiments only represent several embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A heating device for producing artificial diamonds, characterized in that: The invention comprises a frame assembly (10), a high-pressure and high-temperature synthesis device (20), a hot air circulation assembly (30) and four reheating assemblies (40), wherein the frame assembly (10) comprises an external heating frame (11), two upper connecting pipes (12) and two lower connecting pipes (13), wherein the external heating frame (11) is hollow inside to form a synthesis installation cavity (14), upper heating ventilation grooves (141) are respectively recessed at the top of both sides of the synthesis installation cavity (14), lower heating ventilation grooves (142) are respectively recessed at the bottom of both sides of the synthesis installation cavity (14), and lower connecting preset grooves (142) are recessed at one end of the top surface of the lower heating ventilation groove (142). The outer heating frame (11) has a bottom surface provided with a lower pipe installation groove (111) and an upper pipe installation groove (112) spaced apart in the width direction on both sides of the top surface of the external heating frame (11) adjacent to one end of the lower connecting preset groove (143); a lower connecting docking groove (113) is recessed on the outer side of the bottom surface of the lower pipe installation groove (111); and the lower connecting docking groove (113) is arranged opposite to the lower connecting preset groove (143); an upper connecting groove (114) is recessed on the outer side of the bottom surface of the upper pipe installation groove (112); and both the upper connecting groove (114) and the lower connecting docking groove (113) are connected to the upper heating ventilation groove (141); and the outer heating frame (11) has a bottom surface provided with a lower pipe installation groove (111). (11) The top is hollow to form a reflux cavity (15), the bottom surface of the reflux cavity (15) is arrayed with a plurality of reflux communication holes (151), the plurality of reflux communication holes (151) are connected to the synthetic installation cavity (14), the top surface of the reflux cavity (15) is arrayed with a plurality of reflux holes (152) at one end away from the lower pipe installation groove (111), each reflux hole (152) is convexly provided with a reflux connecting pipe (153), the two upper connecting pipes (12) are respectively installed in the two upper pipe installation grooves (112), and the bottom end of each upper connecting pipe (12) is penetrated through the upper connecting groove (114) to set At the top of the upper heating ventilation groove (141), two lower connecting pipes (13) are respectively installed in the two lower heating ventilation grooves (142), and the bottom end of each lower connecting pipe (13) is passed through the lower connecting docking groove (113) and the lower connecting preset groove (143) and is arranged at the top of the lower heating ventilation groove (142), the high-pressure and high-temperature synthesis equipment (20) is installed in the synthesis installation cavity (14), the hot air circulation component (30) is installed on the top of the external heating frame (11), and the four reheating components (40) are respectively installed in the two upper heating ventilation grooves (141) and the two lower heating ventilation grooves (142).

2. The heating device for producing artificial diamond according to claim 1, characterized in that: An upper air inlet pipe (120) is arranged at the top of each upper connecting pipe (12), an upper flow divider (121) is arranged at the bottom end of each upper connecting pipe (12), the upper flow divider (121) is arranged at the top of the upper heating and ventilation groove (141), and the bottom surface of the upper flow divider (121) is provided with five upper evenly distributed openings (122) at intervals along the length direction, and a lower air inlet pipe (130) is arranged at the top of each lower connecting pipe (13), a lower flow divider (131) is arranged at the bottom end of each lower connecting pipe (13), the lower flow divider (131) is arranged at the top of the lower heating and ventilation groove (142), and the bottom surface of the lower flow divider (131) is provided with five lower evenly distributed openings (132) at intervals along the length direction.

3. The heating device for producing artificial diamond according to claim 2, characterized in that: The hot air circulation component (30) comprises an air pump (31), a hot air blower (32), a hot air main pipe (33), four hot air equalizing pipes (34) and a circulation pipe (35); the bottom of the air pump (31) is mounted on one side of the top surface of the external heating frame (11); the bottom of the hot air blower (32) is mounted on the other side of the top surface of the external heating frame (11); the input end of the hot air blower (32) is connected to the output end of the air pump (31); one end of the hot air main pipe (33) is connected to the output end of the hot air blower (32); One end of each of the four hot air distribution pipes (34) is connected to the other end of the hot air main pipe (33); the other ends of the four hot air distribution pipes (34) are respectively connected to the two upper air inlet pipes (120) and the two lower air inlet pipes (130) through pipes; one end of the circulation pipe (35) is connected to the input end of the air pump (31); the other end of the circulation pipe (35) is provided with a plurality of circulation connection ports (351); the plurality of circulation connection ports (351) are respectively connected to the plurality of return connection pipes (153) through pipes.

4. The heating device for producing artificial diamond according to claim 3, characterized in that: Each reheating assembly (40) comprises five reheating air guides (50), and the five reheating air guides (50) are respectively installed in the lower heating ventilation slot (142) or the upper heating ventilation slot (141) at intervals along the length direction.

5. The heating device for producing artificial diamond according to claim 4, characterized in that: Each reheating air guide (50) comprises a secondary heating guide portion (60) and a reheating distribution portion (70); the inner side of the secondary heating guide portion (60) is installed in the lower heating ventilation groove (142) or the upper heating ventilation groove (141); and the inner side of the reheating distribution portion (70) is installed on the outer side of the secondary heating guide portion (60).

6. The heating device for producing artificial diamond according to claim 5, characterized in that: Each secondary heating diversion portion (60) comprises an air guide diversion box (61), a secondary heating cover (62) and two secondary heating elements (63); the inner side of the air guide diversion box (61) is installed in the lower heating ventilation slot (142) or the upper heating ventilation slot (141); the air guide diversion box (61) is hollow inside to form a diversion cavity (611); an air inlet groove (612) is recessed in the middle of the top surface of the diversion cavity (611); the air inlet groove (612) is connected to the bottom end of the lower equalizing opening (132) or the upper equalizing opening (122); a conical diversion block (63) is provided at the top of the diversion cavity (611) 613), and the conical diverter block (613) is located directly below the air inlet slot (612), four hot air equalizing slots (614) are recessed on the outside of the diverter cavity (611) at intervals in the height direction, the inner side of the secondary heating cover (62) is installed on the outside of the air guide diverter box (61), and heating mounting plates (621) are recessed on the top and bottom of the two ends of the outer side of the secondary heating cover (62), and each heating mounting plate (621) is recessed on the side wall thereof with a vertical adjustment slot (622), and the two ends of the two secondary heating elements (63) are respectively slidably mounted in the four vertical adjustment slots (622).

7. The heating device for producing artificial diamond according to claim 6, characterized in that: Each secondary heating element (63) comprises a secondary installation horizontal bar (631), two secondary heating installation vertical bars (632), two secondary heating connecting bars (633), four air guide arc plates (634) and four first electric heating wires (635), the inner ends of the secondary installation horizontal bar (631) are respectively slidably installed in two vertical adjustment slots (622), the outer ends of the two secondary heating installation vertical bars (632) are respectively installed at the inner ends of the secondary installation horizontal bar (631), and the two secondary heating connecting bars (63 3) The two ends are respectively mounted on the top and bottom of the two secondary heating installation vertical bars (632), the inner sides of the four air guide arc plates (634) are respectively mounted on the two outer ends of the two secondary heating connection bars (633), a first heating wire mounting platform is convexly provided on the middle of the outer side of each air guide arc plate (634), a plurality of secondary heating convection grooves (630) are concavely provided in an array on the top and bottom of the side wall of each air guide arc plate (634), and four first electric heating wires (635) are respectively mounted on the four first heating wire mounting platforms.

8. The heating device for producing artificial diamond according to claim 7, characterized in that: Each reheating distribution part (70) comprises a reheating box (71) and four reheating adjustment elements (72). The inner side of the reheating box (71) is mounted on the outer side of the secondary heating cover (62). The interior of the reheating box (71) is hollow to form a hollow cavity (711), and the hollow cavity (711) is connected to the inner cavity of the secondary heating cover (62). Four reheating air outlet slots (712) are recessed at intervals along the height direction on the outer side of the hollow cavity (711), and each reheating air outlet slot (712) is connected to the synthetic mounting cavity (14). The hollow cavity ( Four vertical strip slide grooves (713) are respectively recessed at both ends of the outer side of the hollow cavity (711), and the eight vertical strip slide grooves (713) are respectively located at both ends of the four reheating air outlet slots (712), and eight reheating installation strips (714) are respectively arranged at intervals along the height direction on the inner side of the hollow cavity (711), and the eight reheating installation strips (714) are respectively located at the top and the middle of the four reheating air outlet slots (712), and the four reheating adjustment elements (72) are respectively installed in the eight reheating installation strips (714) and the eight vertical strip slide grooves (713).

9. The heating device for producing artificial diamond according to claim 8, characterized in that: Each reheating regulating element (72) comprises two reheating air guide arc plates (721), two reheating wires (722) and a heat conduction regulating plate (723); the outer tops and bottoms of the two reheating air guide arc plates (721) are respectively mounted on one end of two reheating mounting strips (714); a second heating wire mounting platform is convexly provided on the middle of the outer side of each reheating air guide arc plate (721); a plurality of reheating convection grooves (720) are concavely provided in an array on the top and bottom of the side wall of each reheating air guide arc plate (721); the two reheating wires (722) are respectively mounted on the two second In the heating wire mounting platform, the two ends of the outer side of the heat conduction adjustment plate (723) are respectively provided with adjustment slide columns (724), the two ends of the inner top of the heat conduction adjustment plate (723) are respectively provided with air induction adjustment grooves (725), the top of the inner wall of the air induction adjustment groove (725) is provided with an inclined air guide surface (726), the bottom of the inner side of the air induction adjustment groove (725) is provided with an arc-shaped air discharge surface (727), and the two adjustment slide columns (724) are respectively slidably installed in the two vertical strip slide grooves (713), so that the heat conduction adjustment plate (723) is arranged on the top of the reheating air outlet groove (712).

10. The heating device for producing artificial diamond according to claim 9, characterized in that: A restoring spring is provided between the outer wall of the regulating slide column (724) and the top surface of the vertical strip slide groove (713).

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