Hot pressing sintering device for synthesizing diamond

Abstract

The utility model discloses a hot pressing sintering device for synthesizing diamond, which comprises a working table and a cabinet fixedly arranged on the back of the working table, a rack is fixedly arranged at the top end of the working table, a closed hot pressing sintering mechanism for synthesizing diamond is fixedly arranged in the middle of the rack, and an electric control hydraulic cylinder is fixedly mounted at the top end of the rack. A partition frame is fixedly arranged in the middle of the machine cabinet, a suction mechanism is fixedly installed on the partition frame, and a processing mechanism used for cooling and tail gas purification after diamond hot pressing sintering is fixedly installed at the bottom of the inner wall of the machine cabinet. The treatment mechanism and the suction mechanism which are used for cooling and tail gas purification after diamond hot-pressing sintering are additionally arranged in the machine cabinet, after sintering, ventilation cooling is conducted on the interior of the hot-pressing sintering box, residual harmful substances in the hot-pressing sintering box are purified and absorbed, the cooling efficiency of the hot-pressing sintering box can be remarkably improved, and the service life of the hot-pressing sintering box is prolonged. And the material taking and placing safety of workers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of synthetic diamond, in particular to a hot pressing sintering device for synthetic diamond. Background Art

[0002] The hot pressing sintering device adopts the static pressure method. The graphite raw material and metal are placed in a cavity, placed in a hot pressing sintering machine, and powered on to heat and pressurize. Under the conditions of high temperature and high pressure, the carbon atoms will be rearranged, thereby converting the graphite raw material into diamond. The hot pressing sintering device commonly used in the synthesis of artificial diamonds currently consists of a workbench, a vacuum insulation box, and a hot pressing mold seat. The graphite raw material is added to the hot pressing mold seat, and heated and pressurized under relative vacuum conditions to achieve the synthesis of artificial diamonds. The above common types of hot pressing sintering devices for the synthesis of artificial diamonds have the following shortcomings in actual applications:

[0003] After the graphite raw materials are hot-pressed and sintered in the heat-insulating box, the environment inside the heat-insulating box is at a relatively high temperature and there is a certain amount of smoke particles. There is a risk of burns when the staff open the box to take out the materials, and the natural cooling efficiency is low. Utility Model Content

[0004] The utility model aims to provide a hot pressing sintering device for synthetic diamond, so as to solve the problem of low natural cooling efficiency of the existing hot pressing sintering device for synthetic diamond proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hot pressing and sintering device for synthetic diamond, comprising a workbench and a cabinet fixedly arranged on the back of the workbench, a frame fixedly arranged on the top of the workbench, a closed hot pressing and sintering mechanism for diamond synthesis fixedly arranged in the middle of the frame, an electric-controlled hydraulic cylinder fixedly installed on the top of the frame, a partition fixedly arranged in the middle of the cabinet, a suction mechanism fixedly installed on the partition, a processing mechanism for cooling and exhaust gas purification after hot pressing and sintering of diamonds is fixedly installed on the bottom of the inner wall of the cabinet, a power distribution cabinet fixedly installed on one side of the workbench, and a controller fixedly installed inside the power distribution cabinet.

[0006] Preferably, the closed hot pressing and sintering mechanism includes a thickened base and a hot pressing and sintering box fixedly arranged on the thickened base, the hot pressing and sintering box is hinged with an insulating door, a threaded lock is installed on one side of the front of the hot pressing and sintering box, and a hot pressing die base assembly is fixedly installed inside the hot pressing and sintering box.

[0007] Preferably, the hot pressing die base assembly includes an inductively heated lower die groove and a hot pressing cover arranged opposite to the inductively heated lower die groove, a pressure piece is fixedly arranged at the bottom end of the hot pressing cover, a hot pressing groove is arranged in the middle of the inductively heated lower die groove, the hot pressing groove matches the pressure piece, the bottom end of the electric-controlled hydraulic cylinder passes through the hot pressing sintering box and is fixed on the hot pressing cover, and the electric-controlled hydraulic cylinder is electrically connected to the controller; the hot pressing is stable.

[0008] Preferably, both sides of the back side of the hot pressing sintering box are fixedly connected with air inlet pipes, and the middle parts of the two air inlet pipes are fixedly installed with a first electromagnetic valve; after sintering, the ventilation cooling speed is fast.

[0009] Preferably, the processing mechanism includes a cooling water tank and a water inlet pipe fixedly arranged on the top of one side of the cooling water tank, the bottom of one side of the cooling water tank is fixedly connected to a drain pipe, the middle of the water inlet pipe and the drain pipe are fixedly installed with electromagnetic water valves, the inner wall of the cooling water tank is fixedly provided with a plurality of baffles, the top of the cooling water tank is fixedly connected to an exhaust gas emission pipe, the top of the exhaust gas emission pipe extends out of the cabinet, and the electromagnetic water valve is electrically connected to the controller; it can purify waste heat and smoke, which is more environmentally friendly.

[0010] Preferably, the suction mechanism includes a suction pump and a U-shaped conduit fixedly connected to the air inlet of the suction pump, the middle part of the U-shaped conduit is arranged inside the cooling water tank, the top end of the U-shaped conduit is fixedly connected with a suction pipe, the middle part of the suction pipe is fixedly installed with a second electromagnetic valve, one end of the suction pipe extends to the interior of the hot pressing sintering box, the water outlet of the suction pump is fixedly connected with an air outlet pipe, the suction pump and the second electromagnetic valve are both electrically connected to the controller; after the hot pressing sintering is completed, the high temperature in the hot pressing sintering box can be discharged, and the cooling speed is fast.

[0011] Preferably, a control panel is fixedly mounted on the surface of the power distribution cabinet, a power switch and a touch screen are fixedly mounted on the surface of the control panel, the touch screen is electrically connected to the controller, and the controller is electrically connected to an external power supply via the power switch; the operation is simple and the control is convenient.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The synthetic diamond hot pressing and sintering device is additionally equipped with a processing mechanism and a suction mechanism in the cabinet for cooling down and purifying exhaust gas after hot pressing and sintering of diamonds. After sintering, the inside of the hot pressing and sintering box can be ventilated and cooled first, and the harmful substances remaining in the hot pressing and sintering box can be purified and absorbed before opening the box. This can significantly improve the cooling efficiency of the hot pressing and sintering box and improve the safety of workers when taking and placing materials. The structure has high strength and hot pressing and sintering is stable and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the hot pressing sintering device of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the hot pressing sintering box of the utility model;

[0016] Figure 3 It is a side cross-sectional view of the cabinet of the utility model;

[0017] Figure 4 It is a front cross-sectional view of the hot pressing mechanism of the utility model.

[0018] In the figure: 1. workbench; 2. cabinet; 3. hot pressing sintering box; 4. insulated door; 5. threaded lock; 6. electric hydraulic cylinder; 7. exhaust pipe; 8. distribution cabinet; 9. drain pipe; 10. water inlet pipe; 11. electromagnetic water valve; 12. control panel; 13. controller; 14. induction heating lower die groove; 15. hot pressing groove; 16. air inlet pipe; 17. first electromagnetic air valve; 18. suction pipe; 19. hot pressing cover; 20. thickened base; 21. suction pump; 22. second electromagnetic air valve; 23. U-shaped duct; 24. air outlet pipe; 25. cooling water tank; 26. baffle; 27. pressurized part; 28. rack; 29. ​​partition. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] See also Figure 1-4 The utility model provides a hot pressing sintering device for synthetic diamond, comprising a workbench 1 and a cabinet 2 fixedly arranged on the back of the workbench 1, a frame 28 is fixedly arranged on the top of the workbench 1, a closed hot pressing sintering mechanism for diamond synthesis is fixedly arranged in the middle of the frame 28, an electric-controlled hydraulic cylinder 6 is fixedly installed on the top of the frame 28, a partition 29 is fixedly arranged in the middle of the cabinet 2, a suction mechanism is fixedly installed on the partition 29, a processing mechanism for cooling and exhaust gas purification after hot pressing sintering of diamond is fixedly installed on the bottom of the inner wall of the cabinet 2, a power distribution cabinet 8 is fixedly installed on one side of the workbench 1, a controller 13 is fixedly installed inside the power distribution cabinet 8, a control panel 12 is fixedly installed on the surface of the power distribution cabinet 8, a power switch and a touch display screen are fixedly installed on the surface of the control panel 12, the touch display screen is electrically connected to the controller 13, and the controller 13 is electrically connected to an external power supply through the power switch.

[0021] See also Figure 1 , Figure 2 and Figure 4, further, the closed hot pressing sintering mechanism includes a thickened base 20 and a hot pressing sintering box 3 fixedly arranged on the thickened base 20, the hot pressing sintering box 3 is hinged with an insulating chamber door 4, a threaded locker 5 is installed on one side of the front of the hot pressing sintering box 3, a hot pressing die seat assembly is fixedly installed inside the hot pressing sintering box 3, both sides of the back of the hot pressing sintering box 3 are fixedly connected with an air intake pipe 16, and the middle parts of the two air intake pipes 16 are fixedly installed with a first electromagnetic valve 17, the hot pressing die seat assembly includes an inductive heating lower die groove 14 and a hot pressing sealing cover 19 arranged opposite to the inductive heating lower die groove 14, a pressurizing member 27 is fixedly arranged at the bottom end of the hot pressing sealing cover 19, a hot pressing groove 15 is arranged in the middle part of the inductive heating lower die groove 14, and the hot pressing groove 15 matches the pressurizing member 27, the bottom end of the electric control hydraulic cylinder 6 passes through the hot pressing sintering box 3 and is fixedly arranged on the hot pressing sealing cover 19, and the electric control hydraulic cylinder 6 is electrically connected to the controller 13;

[0022] When in use, graphite raw materials are added into the hot pressing tank 15. After the equipment is started, the electrically controlled hydraulic cylinder 6 works to push the hot pressing cover 19 to move slowly downward until the pressure member 27 is pressed into the hot pressing tank 15. The hot pressing cover 19 covers the outside of the inductively heated lower mold groove 14. At this time, the graphite raw materials can be pressurized and heated.

[0023] See also Figure 1 and Figure 3 , further, the processing mechanism includes a cooling water tank 25 and a water inlet pipe 10 fixedly arranged at the top of one side of the cooling water tank 25, the bottom of one side of the cooling water tank 25 is fixedly connected with a drain pipe 9, the middle of the water inlet pipe 10 and the drain pipe 9 are fixedly installed with an electromagnetic water valve 11, the inner wall of the cooling water tank 25 is fixedly provided with a plurality of baffles 26, the top of the cooling water tank 25 is fixedly connected with an exhaust gas exhaust pipe 7, the top of the exhaust gas exhaust pipe 7 extends out of the cabinet 2, and the electromagnetic water valve 11 is electrically connected to the controller 13;

[0024] When in use, the electromagnetic water valve 11 will be opened regularly, and clean water will flow into the cooling water tank 25 through the water inlet pipe 10 and be discharged through the drain pipe 9. When discharged, the waste heat and impurities will be discharged together, the heat exchange is stable, and it is easy to clean and maintain.

[0025] See also Figure 1 and Figure 3 Further, the suction mechanism includes a suction pump 21 and a U-shaped conduit 23 fixedly connected to the air inlet of the suction pump 21, the middle part of the U-shaped conduit 23 is arranged inside the cooling water tank 25, the top of the U-shaped conduit 23 is fixedly connected with a suction pipe 18, the middle part of the suction pipe 18 is fixedly installed with a second electromagnetic valve 22, one end of the suction pipe 18 extends to the inside of the hot pressing sintering box 3, the water outlet of the suction pump 21 is fixedly connected with an outlet pipe 24, and the suction pump 21 and the second electromagnetic valve 22 are both electrically connected to the controller 13;

[0026] During use, after sintering is completed, the first solenoid valve 17 will open, and the outside air will enter the hot pressing sintering box 3 through the air intake pipe 16, and after carrying heat and exhaust gas, it will enter the U-shaped duct 23 through the suction pipe 18 for cooling. When the hot air flow flows in the U-shaped duct 23, it will exchange heat with the liquid in the cooling water tank 25 to prevent the high-temperature hot air from damaging the suction pump 21.

[0027] When the embodiment of the present application is used: graphite raw materials are added into the hot pressing tank 15, and appropriate amounts of metals such as iron and nickel are added as "flux", the heat-insulating chamber door 4 is closed, the threaded lock 5 is locked, and the electric-controlled hydraulic cylinder 6 is controlled by the control panel 12 to work, and the hot pressing cover 19 is pushed down slowly until the pressure member 27 is pressed into the hot pressing tank 15, and the hot pressing cover 19 covers the outside of the inductively heated lower mold groove 14, and then the suction pump 21 will work first, and the air in the hot pressing sintering box 3 is sucked through the suction pipe 18 and the U-shaped guide tube 23, so as to create a relatively vacuum environment inside the hot pressing sintering box 3, and then the inductively heated lower mold groove 14 is heated. The groove 14 will heat the raw materials in the hot pressing groove 15 and pressurize them through the pressure piece 27, thereby forming a high temperature and high pressure environment in the hot pressing sintering box 3 to achieve hot pressing sintering of artificial diamond. After the sintering is completed, the first solenoid valve 17 will be opened. At this time, the outside air will enter the hot pressing sintering box 3 through the air inlet pipe 16, and after carrying heat and exhaust gas, it will enter the U-shaped duct 23 through the suction pipe 18 to cool down, and finally blown into the bottom of the cooling water tank 25 through the air outlet pipe 24. Under the guidance of the baffle 26, the gas circulates to cool down and filters particulate matter, and finally the exhaust gas is discharged through the exhaust gas exhaust pipe 7.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hot pressing sintering device for synthetic diamond, comprising a workbench (1) and a cabinet (2) fixedly arranged on the back of the workbench (1), characterized in that: A frame (28) is fixedly arranged at the top of the workbench (1), a closed hot pressing sintering mechanism for diamond synthesis is fixedly arranged in the middle of the frame (28), an electric-controlled hydraulic cylinder (6) is fixedly installed at the top of the frame (28), a partition (29) is fixedly arranged in the middle of the cabinet (2), a suction mechanism is fixedly installed on the partition (29), a treatment mechanism for cooling and exhaust gas purification after hot pressing sintering of diamond is fixedly installed at the bottom of the inner wall of the cabinet (2), a power distribution cabinet (8) is fixedly installed on one side of the workbench (1), and a controller (13) is fixedly installed inside the power distribution cabinet (8).

2. The hot pressing sintering device for synthetic diamond according to claim 1, characterized in that: The closed hot pressing and sintering mechanism comprises a thickened base (20) and a hot pressing and sintering box (3) fixedly arranged on the thickened base (20); a heat-insulating door (4) is hingedly connected to the hot pressing and sintering box (3); a threaded locker (5) is installed on one side of the front of the hot pressing and sintering box (3); and a hot pressing die seat assembly is fixedly installed inside the hot pressing and sintering box (3).

3. The hot pressing sintering device for synthetic diamond according to claim 2, characterized in that: The hot pressing die base assembly comprises an inductively heated lower die groove (14) and a hot pressing cover (19) arranged opposite to the inductively heated lower die groove (14); a pressure member (27) is fixedly arranged at the bottom end of the hot pressing cover (19); a hot pressing groove (15) is arranged in the middle of the inductively heated lower die groove (14); the hot pressing groove (15) matches the pressure member (27); the bottom end of the electric-controlled hydraulic cylinder (6) passes through the hot pressing sintering box (3) and is fixedly arranged on the hot pressing cover (19); the electric-controlled hydraulic cylinder (6) is electrically connected to the controller (13).

4. The hot pressing sintering device for synthetic diamond according to claim 2, characterized in that: Both sides of the back side of the hot pressing sintering box (3) are fixedly connected with air intake pipes (16), and the middle parts of the two air intake pipes (16) are fixedly installed with first electromagnetic valves (17).

5. The hot pressing sintering device for synthetic diamond according to claim 2, characterized in that: The treatment mechanism comprises a cooling water tank (25) and a water inlet pipe (10) fixedly arranged at the top of one side of the cooling water tank (25); the bottom of one side of the cooling water tank (25) is fixedly connected to a drain pipe (9); the middle parts of the water inlet pipe (10) and the drain pipe (9) are fixedly installed with an electromagnetic water valve (11); the inner wall of the cooling water tank (25) is fixedly provided with a plurality of baffles (26); the top of the cooling water tank (25) is fixedly connected to an exhaust gas discharge pipe (7); the top of the exhaust gas discharge pipe (7) extends out of the cabinet (2); and the electromagnetic water valve (11) is electrically connected to a controller (13).

6. The hot pressing sintering device for synthetic diamond according to claim 5, characterized in that: The suction mechanism comprises a suction pump (21) and a U-shaped conduit (23) fixedly connected to the air inlet of the suction pump (21); the middle portion of the U-shaped conduit (23) is arranged inside a cooling water tank (25); the top end of the U-shaped conduit (23) is fixedly connected to a suction pipe (18); the middle portion of the suction pipe (18) is fixedly installed with a second electromagnetic valve (22); one end of the suction pipe (18) extends to the inside of a hot pressing sintering box (3); the water outlet of the suction pump (21) is fixedly connected to an air outlet pipe (24); and the suction pump (21) and the second electromagnetic valve (22) are both electrically connected to a controller (13).

7. The hot pressing sintering device for synthetic diamond according to claim 1, characterized in that: A control panel (12) is fixedly mounted on the surface of the power distribution cabinet (8); a power switch and a touch screen are fixedly mounted on the surface of the control panel (12); the touch screen is electrically connected to a controller (13); and the controller (13) is electrically connected to an external power supply via the power switch.

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