Colorful large-particle diamond preparation device and preparation process

Abstract

The invention relates to the technical field of diamond preparation, and discloses a color large-particle diamond preparation device and a preparation process, the color large-particle diamond preparation device comprises a workbench and a growth cabin cover, the top of the workbench is provided with a blowing assembly and a pressure control mechanism, and the inner wall of the workbench is provided with a second annular clamping groove below a first annular clamping groove; the inner wall of the first annular clamping groove is rotationally connected with an annular disc, a plurality of protruding blocks are fixedly arranged on the side of the inner wall of the annular disc at equal intervals, a connecting ring is fixedly arranged at the bottom of the annular disc, the bottom of the connecting ring penetrates through the inner wall of the second annular clamping groove to be connected with a gear ring, and one end of the inner wall of the second annular clamping groove is rotationally connected with a gear. The diamond preparation container can be quickly positioned and mounted to be placed in a stable growth environment, meanwhile, the periphery of the diamond preparation container can be uniformly catalyzed when catalytic gas such as methane is blown to the surface of a diamond seed crystal, the growth uniformity during diamond preparation is improved, and the quality of large-particle colored diamonds is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of diamond preparation, and particularly relates to a device and a preparation process for preparing large-sized colored diamonds. Background Art

[0002] Diamond, commonly known as "diamond drill", is a mineral composed of carbon elements, an allotrope of graphite, with the chemical formula C, and is also the original body of common diamonds. Diamond is the hardest substance naturally occurring in nature. Graphite can form artificial diamonds under high temperature and high pressure. Diamonds have a very wide range of uses. For example, they are used in handicrafts and cutting tools in industry, and are also a precious gemstone. Single-crystal diamonds have excellent physical and chemical properties and have important application values in fields such as machinery, electronics, and jewelry. To expand these applications, it is necessary to prepare large-sized diamonds. Currently, the diamond preparation technology mainly uses the low-pressure chemical vapor deposition process. By precisely controlling the temperature gradient, pressure range, and flow field distribution of carbon source gases in the reaction chamber, the directional growth of large-sized diamonds can be achieved. Especially for the preparation of colored diamonds, doping elements such as nitrogen (yellow diamond) and boron (blue diamond) need to be introduced during the growth process, which puts higher requirements on the thermodynamic equilibrium and mass transfer efficiency of the reaction system.

[0003] However, there are significant technical bottlenecks in the implementation of existing preparation devices: First, the traditional annular array intake system is difficult to establish a uniform three-dimensional flow field on the surface of the seed crystal, resulting in a concentration gradient difference of active carbon groups generated by methane cracking in the four corner regions of the seed crystal, and then causing the phenomenon of anisotropic crystal growth. According to statistics, this non-uniformity can increase the processing loss rate of the finished diamond and reduce the preparation quality of the diamond. Second, to simulate the mantle-like environment, existing equipment generally uses a multi-layer mechanical seal structure. Each single opening and closing operation requires coordinating a large number of locking mechanisms, significantly reducing the experimental efficiency and increasing the risk of seal failure. In addition, the current process has insufficient control accuracy for the micro-region temperature field in the reaction chamber, directly affecting the lattice substitution efficiency of doping elements and causing uneven chromaticity distribution of colored diamonds.

[0004] Therefore, it is necessary to invent a device and a preparation process for preparing large-sized colored diamonds to solve the above problems, which can solve the problems of uneven growth around the diamond seed crystal and complex closed operation procedures of the diamond chamber. Summary of the Invention

[0005] In view of the above problems, the present invention provides a device and a preparation process for preparing large-sized colored diamonds to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solutions: A device and preparation process for preparing large colored diamond particles, including a workbench and a growth chamber cover, characterized in that: a blowing component and a pressure control mechanism are installed on the top of the workbench, and a temperature control mechanism and a fixing component are provided at the upper end of the growth chamber cover;

[0007] The blowing component includes a groove opened at the middle position on the top of the workbench. A first annular card slot is opened at the outer edge of the groove on the top of the workbench. A second annular card slot is opened on the inner wall of the workbench below the first annular card slot, and the inner wall of the first annular card slot is communicated with the inner wall of the second annular card slot. The inner wall of the first annular card slot is rotatably connected with an annular disc. A plurality of convex blocks are fixedly arranged at equal distances on the side of the inner wall of the annular disc. A connecting ring is fixedly arranged at the bottom of the annular disc. The bottom of the connecting ring passes through the inner wall of the second annular card slot and is connected with a toothed ring, and the toothed ring is fixed at the lower edge of the outer wall of the connecting ring. One end of the inner wall of the second annular card slot is rotatably connected with a gear, and the outer wall of the gear meshes with the outer wall of the toothed ring. A plurality of first connection holes are opened at equal distances on one side of the inner wall of the first annular card slot. A metal air pipe is inserted through the inner wall of each first connection hole. One end of each metal air pipe is fixedly provided with a gas storage disc. A hose is inserted and connected between the outer walls of each gas storage disc, and the inner wall of each hose passes through the inner wall of each gas storage disc and is communicated with the inner wall of each metal air pipe respectively. A first spring is sleeved on the outer wall of one end of each metal air pipe, and both ends of each first spring are fixedly connected with one side of each gas storage disc and one side of the inner wall of the first annular card slot respectively. A plurality of second connection holes are opened at equal distances at the lower edge of the outer wall of the growth chamber cover. One side of the inner wall of each second connection hole is inserted and connected with a first connection pipe;

[0008] Preferably, the inner wall of one end of each metal air pipe passes through the inner wall of each first connection hole and is inserted and connected with the inner wall of each second connection hole, and the inner wall of one end of each metal air pipe is communicated with the inner wall of each first connection pipe respectively. A motor is installed on one side of the top of the workbench, and one end of the gear passes through the top of the workbench and is fixedly connected with the output end of the motor.

[0009] Preferably, a second connection pipe is inserted and connected to one side of the top of the hose. A gas tank is installed on one side of the top of the workbench. A first conduit is inserted and connected to one side of the gas tank, and one end of the first conduit passes through the inner wall of the second connection pipe and is communicated with the inner wall of the hose. A support pipe is installed on the top of the growth chamber cover.

[0010] Preferably, the temperature control mechanism includes a mounting frame installed on the top of the support pipe. A plurality of heat conducting rods are installed at equal distances on the top of the growth chamber cover. A first wire is inserted through the top of each heat conducting rod, and one end of each first wire is connected to the bottom of the mounting frame respectively.

[0011] Preferably, heating wires are respectively installed through the inner walls at one ends of each of the heat conducting rods and penetrate through the inner wall of the growth chamber cover. A plurality of second wires are inserted and connected to one side of the mounting frame, and one end of each second wire is inserted and connected to one end of the workbench.

[0012] Preferably, third annular clamping grooves are formed at the edges of the bottom of the inner wall of the groove, and the bottom of the growth chamber cover is inserted and connected to the inner wall of the third annular clamping groove. First sealing gaskets are fixedly arranged at the bottom of the growth chamber cover and the bottom of the inner wall of the third annular clamping groove. An observation window is formed on one side of the growth chamber cover, and transparent tempered glass is installed on the inner wall of the observation window. A preparation table is fixedly arranged on the inner wall of the groove inside the growth chamber cover.

[0013] Preferably, the pressure control mechanism includes a small turbocharger valve installed on the top of the mounting frame. A second conduit is inserted and connected to the top of the small turbocharger valve. A support frame is installed on the other side of the top of the workbench, and a pressure relief tank is installed on the inner wall of the support frame. A control valve is installed at the bottom of the pressure relief tank.

[0014] Preferably, second sealing gaskets are fixedly arranged on one side of each of the metal air pipes and on one side of the inner wall of each of the second connection holes. A plurality of air blowing pipes are fixedly arranged at equal intervals on the lower edge of the inner wall of the growth chamber cover, and the inner walls of each of the air blowing pipes are respectively communicated with the inner walls of each of the first connecting pipes.

[0015] Preferably, the fixing assembly includes mounting holes formed on both sides of the inner wall of the third annular clamping groove. Clasps are inserted and connected to the inner walls of the two mounting holes. Second springs are fixedly arranged on one side of each of the two clasps, and one end of each second spring is fixedly connected to one side of the inner walls of the two mounting holes respectively. Card holes are formed at the lower edges of both sides of the outer wall of the growth chamber cover, and the outer walls of the two clasps are respectively inserted and connected to the inner walls of the two card holes. A control panel is installed on one side of the workbench, and the motor, the heating wires and the small turbocharger valve are all electrically connected to an external power supply through the control panel.

[0016] The technical effects and advantages of the present invention:

[0017] 1. By providing a blowing component, after placing the diamond seed crystal on the preparation table and covering it with the growth chamber cover, the motor is started to drive the gear to engage with the toothed ring and rotate. Subsequently, by driving the connecting ring to rotate, the annular disc rotates in the first annular card slot. During the rotation process, the bumps on the annular disc squeeze the gas storage disc, thereby pushing the metal gas pipe to penetrate through the first connecting hole, inserting it into the second connecting hole around the growth chamber cover and docking with the first connecting pipe therein, thus fixing the growth chamber cover. At the same time, the gas in the gas tank can be introduced into each metal gas pipe through the hose, and then blown from the periphery inside the growth chamber cover towards the diamond seed crystal on the preparation table, ensuring that during the growth of the diamond seed crystal, the four peripheral edges can uniformly receive the catalysis of the gas, enabling it to grow evenly. This design can not only quickly position and install the diamond preparation container, placing it in a stable growth environment, but also ensure that catalytic gases such as methane can be evenly catalyzed around the diamond seed crystal when blowing towards its surface, guaranteeing the growth uniformity during diamond preparation and improving the quality of large-sized colored diamonds;

[0018] 2. By providing a temperature control mechanism and a pressure control mechanism, when preparing large-sized colored diamonds, the heat conducting rod is connected and powered to the control panel through the first wire and the second wire. Subsequently, the heating wires on the heat conducting rods in each direction can be individually controlled through the control panel, and targeted temperature regulation can be carried out according to the growth condition of the diamond seed crystal, facilitating the control of diamond preparation growth. At the same time, by connecting the small turbocharging valve and the pressure relief tank, the pressure inside the growth chamber cover can be adjusted in real time to simulate the pressure of natural diamond growth inside the earth's crust, thereby enhancing the control intensity during diamond preparation growth;

[0019] 3. By providing a fixing component, after covering the growth chamber cover on the workbench and placing the preparation table inside the growth chamber cover, when the bottom of the growth chamber cover is inserted into the third annular card slot, the buckle is squeezed, and under the elastic action of the second spring, the buckle is inserted into the card holes on both sides of the growth chamber cover, thereby firmly fixing the growth chamber cover and improving the convenience of equipment installation.

[0020] Other features and advantages of the present invention will be described in the subsequent description, and part of them will become obvious from the description or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures pointed out in the description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0023] Figure 2 is a schematic diagram of the internal structure of the workbench of the present invention;

[0024] Figure 3 is a schematic diagram of the overall structure of the annular disk of the present invention;

[0025] Figure 4 is a schematic diagram of the structure of the engagement between the bottom tooth ring of the annular disk and the gear of the present invention;

[0026] Figure 5 is a schematic diagram of the structure of the connection between the metal air pipe and the hose of the present invention;

[0027] Figure 6 is the appendix of the specification of the present invention Figure 1 The enlarged schematic diagram at position A;

[0028] Figure 7 is a schematic diagram of the internal structure of the growth chamber cover of the present invention;

[0029] Figure 8 is a schematic diagram of the structure of the heating wire on the upper side of the inner wall of the growth chamber cover of the present invention;

[0030] Figure 9 is a schematic diagram of the front of the workbench of the present invention;

[0031] Figure 10 is a schematic diagram of the overall structure of the pressure relief tank of the present invention;

[0032] Figure 11 is the appendix of the specification of the present invention Figure 7 The enlarged schematic diagram at position B;

[0033] Figure 12 is the appendix of the specification of the present invention Figure 2 The enlarged schematic diagram at position C.

[0034] In the figure: 1, workbench; 2, growth chamber cover; 3, air blowing assembly; 301, first annular card slot; 302, second annular card slot; 303, annular disc; 304, bump; 305, connecting ring; 306, toothed ring; 307, gear; 308, first connection hole; 309, metal air pipe; 310, air storage disc; 311, hose; 312, first spring; 313, second connection hole; 314, first connecting pipe; 315, motor; 4, second connecting pipe; 5, gas tank; 6, first conduit; 7, support pipe; 8, temperature control mechanism; 801, heat conducting rod; 802, first wire; 803, mounting bracket; 804, heating wire; 805, second wire; 9, third annular card slot; 10, first sealing washer; 11, observation window; 12, preparation table; 13, pressure control mechanism; 1301, small turbocharged valve; 1302, second conduit; 1303, support frame; 1304, pressure relief tank; 1305, control valve; 14, second sealing washer; 15, air blowing pipe; 16, fixing assembly; 1601, mounting hole; 1602, buckle; 1603, second spring; 1604, card hole. Detailed implementation mode

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] The present invention provides a Figures 1 - 12 colorful large particle diamond preparation device and preparation process as shown in the figure, including a workbench 1, a growth chamber cover 2. An air blowing assembly 3 and a pressure control mechanism 13 are installed on the top of the workbench 1, and a temperature control mechanism 8 and a fixing assembly 16 are arranged at the upper end of the growth chamber cover 2;

[0037] The air blowing assembly 3 includes a groove formed in the middle position at the top of the workbench 1. At the outer edge of the groove on the top of the workbench 1, a first annular clamping groove 301 is formed. Below the first annular clamping groove 301 on the inner wall of the workbench 1, a second annular clamping groove 302 is formed, and the inner wall of the first annular clamping groove 301 is communicated with the inner wall of the second annular clamping groove 302. The inner wall of the first annular clamping groove 301 is rotatably connected with an annular disc 303. At the side of the inner wall of the annular disc 303, a plurality of bumps 304 are fixedly arranged at equal distances. At the bottom of the annular disc 303, a connecting ring 305 is fixedly arranged. The bottom of the connecting ring 305 passes through the inner wall of the second annular clamping groove 302 and is connected with a toothed ring 306, and the toothed ring 306 is fixed at the lower edge of the outer wall of the connecting ring 305. One end of the inner wall of the second annular clamping groove 302 is rotatably connected with a gear 307, and the outer wall of the gear 307 is meshed with the outer wall of the toothed ring 306. On one side of the inner wall of the first annular clamping groove 301, a plurality of first connection holes 308 are formed at equal distances. A metal air pipe 309 is inserted through the inner wall of each first connection hole 308. At one end of each metal air pipe 309, an air storage disc 310 is fixedly arranged. A hose 311 is inserted between the outer walls of each air storage disc 310, and the inner wall of each hose 311 respectively passes through the inner wall of each air storage disc 310 and is communicated with the inner wall of each metal air pipe 309. A first spring 312 is sleeved on the outer wall of one end of each metal air pipe 309, and the two ends of each first spring 312 are respectively fixedly connected with one side of each air storage disc 310 and one side of the inner wall of the first annular clamping groove 301. At the lower edge of the outer wall of the growth chamber cover 2, a plurality of second connection holes 313 are formed at equal distances. On one side of the inner wall of each second connection hole 313, a first connection pipe 314 is inserted;

[0038] During use, place the diamond seed crystal on the preparation table 12, cover it with the growth chamber cover 2, fix the growth chamber cover 2 on the workbench 1 through the fixing component 16, start the motor 315 to make the gear 307 rotate meshing with the tooth ring 306 on the inner wall of the second annular slot 302. While the tooth ring 306 rotates, it drives the annular disc 303 to rotate, so that while the annular disc 303 rotates in the first annular slot 301, the bump 304 at its upper end squeezes the gas storage disc 310, and then pushes each metal gas pipe 309 to move through the first connection hole 308 and insert into the second connection hole 313 on the outer wall of the growth chamber cover 2 and dock with the first connection pipe 314 therein. After docking, not only the gas connection pipe is communicated with the growth chamber cover 2, but also the growth chamber cover 2 is clamped and fixed around by the metal gas pipe 309, so that it is firmly fixed on the workbench 1 for diamond preparation operation, improving its stability during the preparation process. The gas for preparing diamond by chemical vapor deposition is introduced into the hose 311 from the gas cylinder 5, then enters the metal gas pipe 309 from the hose 311, and finally enters the growth chamber cover 2 and is blown to the periphery of the diamond seed crystal placed on the preparation table 12 through the blow pipe 15, so that it grows evenly, preventing the growth edge of the diamond seed crystal from carbonizing and finally resulting in an irregular shape, improving the uniformity during diamond preparation. And the blown gas is mainly methane, and an adjustment valve is provided on the gas cylinder 5. When blowing is required, the gas in the gas cylinder 5 is controlled by the regulating valve to be discharged into the first conduit 6, and the connection mode of the metal gas pipe 309 and the hose 311 is as shown in the attached Figure 5 As shown in the figure, when the metal gas pipe 309 penetrates through the first connection hole 308, the hose 311 bends along with it, so that no pulling force is generated between the two.

[0039] Furthermore, as shown in the attached Figures 3 - 4 figure, the inner wall of one end of each metal gas pipe 309 respectively penetrates through the inner wall of each first connection hole 308 and is inserted and connected with the inner wall of each second connection hole 313, and the inner wall of one end of each metal gas pipe 309 is respectively communicated with the inner wall of each first connection pipe 314. A motor 315 is installed on one side of the top of the workbench 1, and one end of the gear 307 passes through the top of the workbench 1 and is fixedly connected with the output end of the motor 315, and the gear 307 and the tooth ring 306 are meshed and connected with each other as shown in the attached Figure 4 figure, and the inner wall size of the second annular slot 302 is sufficient to enable the gear 307 to fully mesh with the tooth ring 306 to drive the connection ring 305, etc. to rotate;

[0040] Furthermore, a second connection pipe 4 is inserted and connected to one side of the top of the hose 311. A gas cylinder 5 is installed on one side of the top of the workbench 1. A first conduit 6 is inserted and connected to one side of the gas cylinder 5, and one end of the first conduit 6 passes through the inner wall of the second connection pipe 4 and is communicated with the inner wall of the hose 311. A support pipe 7 is installed on the top of the growth chamber cover 2, and the inner wall of the support pipe 7 is communicated with the inner wall of the growth chamber cover 2;

[0041] Further, as shown in the attached drawings of the specification Figures 7 - 8 As shown, the temperature control mechanism 8 includes a mounting frame 801 installed at the top of the support tube 7. A plurality of heat conducting rods 802 are equidistantly installed at the top of the growth chamber cover 2. The top of each heat conducting rod 802 is inserted and connected with a first wire 803, and one end of each first wire 803 is respectively connected to the bottom of the mounting frame 801. And as shown in the attached drawings of the specification Figure 7 As shown, three heat conducting rods 801 are provided. Each of them is connected to the second wire 805 through the first wire 802 passing through the mounting frame 803, so as to energize the heating wire 804 inside the heat conducting rod 801 and the control panel.

[0042] The inner wall of one end of each heat conducting rod 801 respectively passes through the inner wall of the growth chamber cover 2 and is installed with a heating wire 804. A plurality of second wires 805 are inserted and connected to one side of the mounting frame 803, and one end of each second wire 805 is inserted and connected to one end of the workbench 1. By inserting three heat conducting rods 801 at the top of the growth chamber cover 2 and inserting them into the inner wall of the growth chamber cover 2, uniform heating and temperature control are carried out above the diamond seed crystal, so as to achieve the temperature inside the earth's crust, enabling the diamond to grow by imitating the natural temperature. And through the control panel, the first wire 802 and the second wire 805 are used to separately connect each heat conducting rod 801, so that during the preparation of the diamond, the temperature in each direction can be controlled and adjusted according to the actual growth situation, enabling it to grow along the required trajectory, and improving the control precision of the device for diamond growth;

[0043] Further, as shown in the attached drawings of the specification Figure 1 , 2 As shown in FIGS. 8, a third annular clamping groove 9 is formed at the bottom edge of the inner wall of the groove, and the bottom of the growth chamber cover 2 is inserted and connected to the inner wall of the third annular clamping groove 9. First sealing gaskets 10 are fixedly provided at the bottom of the growth chamber cover 2 and the bottom of the inner wall of the third annular clamping groove 9. An observation window 11 is formed on one side of the growth chamber cover 2, and a transparent toughened glass is installed on the inner wall of the observation window 11. A preparation table 12 is fixedly provided on the inner side of the groove inner wall where the growth chamber cover 2 is located. An observation window 11 is formed on one side of the growth chamber cover 2, and a transparent toughened glass with high hardness is arranged in the observation window 11, which is convenient for the staff to observe the preparation and growth situation of the diamond seed crystal at all times. This kind of design is convenient for observation and does not affect the sealing performance of the equipment;

[0044] Further, as shown in the attached drawings of the specification Figures 9 - 10As shown in the figure, the pressure control mechanism 13 includes a small turbocharging valve 1301 installed on the top of the mounting bracket 803. A second conduit 1302 is inserted and connected to the top of the small turbocharging valve 1301. On the other side of the top of the workbench 1, a support frame 1303 is installed. A pressure relief tank 1304 is installed on the inner wall of the support frame 1303. A control valve 1305 is installed at the bottom of the pressure relief tank 1304. During the diamond preparation process, the small turbocharging valve 1301 is connected to the support tube 7, and through the support tube 7, the small turbocharging valve 1301 is connected to the growth chamber cover 2. The small turbocharging valve 1301 can not only increase the pressure but also relieve the pressure. The common models of turbocharging valves are GT2052V, 14411-2X900, 72463914411-VC100, etc. In actual use, it can be matched according to the volume support and adaptability of the preparation equipment. When the small turbocharging valve 1301 adjusts the pressure inside the growth chamber cover 2, the air pressure is introduced into the pressure relief tank 1304 through the second conduit 1302, and then the excess pressure in the pressure relief tank 1304 is discharged through the control valve 1305, realizing the free adjustment of pressure during the diamond preparation process and improving the convenience of using the device;

[0045] Further, a second sealing gasket 14 is fixedly provided on one side of each metal air pipe 309 and on one side of the inner wall of each second connection hole 313. A plurality of blow pipes 15 are equidistantly and fixedly provided at the lower edge of the inner wall of the growth chamber cover 2, and the inner walls of each blow pipe 15 are respectively communicated with the inner walls of each first connection pipe 314. When the metal air pipe 309 on the blowing assembly 3 is inserted into the second connection hole 313, the metal air pipe 309 presses against the second sealing gasket 14 in the second connection hole 313, thereby realizing the sealing of the connection area and ensuring the vacuum environment in the growth space. And the blow pipes 15 in the growth chamber cover 2 are as shown in the attached instruction manual Figure 11 As shown, its blowing end is inclined upward and faces the central area of the preparation table 12, so that the blown gas fully blows around the diamond seeds on the preparation table 12;

[0046] Further, as shown in the attached instruction manual Figure 12As shown in the figure, the fixing component 16 includes mounting holes 1601 opened on both sides of the inner wall of the third annular card slot 9. The inner walls of the two mounting holes 1601 are both inserted and connected with buckles 1602. One side of each of the two buckles 1602 is fixedly provided with a second spring 1603, and one end of each second spring 1603 is fixedly connected to one side of the inner wall of the two mounting holes 1601 respectively. Card holes 1604 are opened at the lower edges of both sides of the outer wall of the growth chamber cover 2, and the outer walls of the two buckles 1602 are respectively inserted and connected with the inner walls of the two card holes 1604. A control panel is installed on one side of the workbench 1, and the motor 315, the heating wire 804, and the small turbocharged valve 1301 are all electrically connected to an external power supply through the control panel. When the growth chamber cover 2 is snapped into the groove, its bottom is snapped into the third annular card slot 9 in the inner wall of the groove, so that it presses the buckle 1602, causing the buckle 1602 to contract in the mounting hole 1601 and compress the second spring 1603. When the buckle 1602 aligns with the card holes 1604 on both sides of the growth chamber cover 2, the buckle 1602 is snapped into the card hole 1604 under the elastic action of the second spring 1603, and presses the growth chamber cover 2, so that the first sealing washer 10 at its bottom is in close contact with the first sealing washer 10 in the third annular card slot 9, achieving a sealing effect. At the same time, the installation and positioning are convenient and fast. The clamping of the metal air pipe 309 on the blowing component 3 and the second connection hole 313 realizes the quick positioning and installation of the diamond preparation equipment, without cumbersome operation procedures, and improves the use efficiency of the device.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device and a preparation process for preparing large-sized colored diamond particles, comprising a workbench (1) and a growth chamber cover (2), characterized in that: A blowing component (3) and a pressure control mechanism (13) are installed on the top of the workbench (1), and a temperature control mechanism (8) and a fixing component (16) are arranged at the upper end of the growth chamber cover (2); The blowing component (3) includes a groove formed in the middle position of the top of the workbench (1). A first annular clamping groove (301) is formed at the outer edge of the groove on the top of the workbench (1). A second annular clamping groove (302) is formed in the inner wall of the workbench (1) below the first annular clamping groove (301), and the inner walls of the first annular clamping groove (301) and the second annular clamping groove (302) are communicated. An annular disc (303) is rotatably connected to the inner wall of the first annular clamping groove (301). A plurality of bumps (304) are fixedly arranged at equal intervals on the side of the inner wall of the annular disc (303). A connecting ring (305) is fixedly arranged at the bottom of the annular disc (303). The bottom of the connecting ring (305) passes through the inner wall of the second annular clamping groove (302) and is connected with a toothed ring (306), and the toothed ring (306) is fixed at the lower edge of the outer wall of the connecting ring (305). A gear (307) is rotatably connected to one end of the inner wall of the second annular clamping groove (302), and the outer wall of the gear (307) meshes with the outer wall of the toothed ring (306). A plurality of first connection holes (308) are formed at equal intervals on one side of the inner wall of the first annular clamping groove (301). A metal air pipe (309) is inserted into the inner wall of each first connection hole (308). A gas storage disc (310) is fixedly arranged at one end of each metal air pipe (309). A hose (311) is inserted between the outer walls of each gas storage disc (310), and the inner wall of each hose (311) respectively passes through the inner wall of each gas storage disc (310) and is communicated with the inner wall of each metal air pipe (309). A first spring (312) is sleeved on the outer wall of one end of each metal air pipe (309), and the two ends of each first spring (312) are respectively fixedly connected with one side of each gas storage disc (310) and one side of the inner wall of the first annular clamping groove (301). A plurality of second connection holes (313) are formed at equal intervals at the lower edge of the outer wall of the growth chamber cover (2). A first connection pipe (314) is inserted into one side of the inner wall of each second connection hole (313).

2. The preparation device and preparation process of a kind of large-sized colored diamond according to claim 1, characterized in that: One end of the inner wall of each metal air pipe (309) respectively passes through the inner wall of each first connection hole (308) and is inserted into the inner wall of each second connection hole (313), and the inner wall of one end of each metal air pipe (309) is respectively communicated with the inner wall of each first connection pipe (314). A motor (315) is installed on one side of the top of the workbench (1), and one end of the gear (307) passes through the top of the workbench (1) and is fixedly connected with the output end of the motor (315).

3. The device and preparation process for preparing large-sized colored diamond grains according to claim 1, wherein: One side of the top of the hose (311) is inserted and connected with a second connecting pipe (4). One side of the top of the workbench (1) is provided with an air tank (5). One side of the air tank (5) is inserted and connected with a first conduit (6), and one end of the first conduit (6) passes through the inner wall of the second connecting pipe (4) and communicates with the inner wall of the hose (311). A support pipe (7) is installed on the top of the growth chamber cover (2).

4. A device and process for preparing large-sized colored diamond particles according to claim 3, characterized in that: The temperature control mechanism (8) includes a mounting frame (801) installed on the top of the support pipe (7). A plurality of heat conducting rods (802) are equidistantly installed on the top of the growth chamber cover (2). The top of each heat conducting rod (802) is inserted and connected with a first wire (803), and one end of each first wire (803) is respectively connected to the bottom of the mounting frame (801).

5. A device and a preparation process for preparing large-sized colored diamond particles according to claim 4, characterized in that: The inner wall of one end of each heat conducting rod (801) passes through the inner wall of the growth chamber cover (2) and is provided with a heating wire (804). A plurality of second wires (805) are inserted and connected to one side of the mounting frame (803), and one end of each second wire (805) is inserted and connected to one end of the workbench (1).

6. The device and preparation process for preparing large-sized colored diamond particles according to claim 1, characterized in that: A third annular clamping groove (9) is formed at the edge of the bottom of the inner wall of the groove, and the bottom of the growth chamber cover (2) is inserted and connected with the inner wall of the third annular clamping groove (9). First sealing gaskets (10) are fixedly arranged at the bottom of the growth chamber cover (2) and the bottom of the inner wall of the third annular clamping groove (9). An observation window (11) is formed on one side of the growth chamber cover (2), and a transparent toughened glass is installed on the inner wall of the observation window (11). A preparation table (12) is fixedly arranged on the inner wall of the groove inside the growth chamber cover (2).

7. A device and process for preparing large-sized colored diamond, as claimed in claim 1, wherein: The pressure control mechanism (13) includes a small turbocharged valve (1301) installed on the top of the mounting frame (803). A second conduit (1302) is inserted and connected to the top of the small turbocharged valve (1301). Another support frame (1303) is installed on the other side of the top of the workbench (1). A pressure relief tank (1304) is installed on the inner wall of the support frame (1303). A control valve (1305) is installed at the bottom of the pressure relief tank (1304).

8. The preparation device and preparation process of a kind of large-sized colored diamond according to claim 1, characterized in that: Second sealing gaskets (14) are fixedly arranged on one side of each metal air pipe (309) and one side of the inner wall of each second connecting hole (313). A plurality of air blowing pipes (15) are equidistantly fixed on the lower edge of the inner wall of the growth chamber cover (2), and the inner walls of each air blowing pipe (15) communicate with the inner walls of each first connecting pipe (314) respectively.

9. The preparation device and preparation process of a kind of large-color granular diamond according to claim 1, characterized in that: The fixed component (16) includes mounting holes (1601) opened on both sides of the inner wall of the third annular clamping groove (9). The inner walls of the two mounting holes (1601) are both inserted and connected with clamping buckles (1602). A second spring (1603) is fixedly provided on one side of each of the two clamping buckles (1602), and one end of each second spring (1603) is fixedly connected to one side of the inner wall of the two mounting holes (1601). At the lower edges on both sides of the outer wall of the growth chamber cover (2), clamping holes (1604) are opened, and the outer walls of the two clamping buckles (1602) are respectively inserted and connected with the inner walls of the two clamping holes (1604). A control panel is installed on one side of the workbench (1), and the motor (315), the heating wire (804), and the small turbocharged valve (1301) are all electrically connected to an external power supply through the control panel.

10. A preparation process for large-sized colored diamond particles, characterized in that, The method is as follows: Step 1: First, place the diamond seed crystal on the preparation table (12), cover it with the growth chamber cover (2), fix the growth chamber cover (2) on the workbench (1) through the fixed component (16), and connect the pressure control mechanism (13) at the top of the growth chamber cover (2) to the pressure relief tank (1304) through the second conduit (1302) at its upper end, so as to control the pressure inside the growth chamber cover (2). Step 2: When the growth chamber cover (2) is snapped into the groove at the top of the workbench (1), the outer wall of its bottom is snapped into the third annular clamping groove (9) at the bottom of the inner wall of the groove. By extruding the protruding clamping buckle (1602) in the third annular clamping groove (9) with its outer wall, it will be squeezed and contracted into the mounting hole (1601) and compress the second spring (1603). Until the clamping buckle 1602 is aligned with the clamping holes (1604) on both sides of the outer wall of the growth chamber cover (2), the clamping buckle (1602) is snapped into the clamping hole (1604) under the elastic action of the second spring (1603). At this time, the growth chamber cover (2) is tightly squeezed, making the first sealing gasket (10) at the bottom and the bottom of the inner wall of the third annular clamping groove (9) in close contact, which not only facilitates the positioning and installation of the equipment, but also realizes the high-efficiency sealing of the internal preparation area. Step 3: Then start the motor (315) to drive the gear (307) to rotate meshing with the toothed ring (306) on the inner wall of the second annular clamping groove (302). While the toothed ring (306) rotates, it drives the annular disc (303) to rotate. When the annular disc (303) rotates in the first annular clamping groove (301), the convex block (304) at its upper end squeezes the gas storage disc (310), thereby pushing each metal air pipe (309) to move and insert through the first connection hole (308) and insert into the second connection hole (313) on the outer wall of the growth chamber cover (2) and dock with the first connection pipe (314) therein. After docking, not only the gas connection pipe is communicated with the growth chamber cover (2), but also the growth chamber cover (2) is firmly fixed on the workbench (1) by the extrusion and clamping of the metal air pipe (309) around it, so as to improve the stability during the diamond preparation operation. Step 4: The gas for preparing diamond by chemical vapor deposition is introduced into the hose (311) through the gas cylinder (5), then enters the metal gas pipe (309) from the hose 311, and finally enters the growth chamber cover (2) and is blown around the diamond seeds placed on the preparation table (12) through the blow pipe (15), so that they grow evenly, improving the uniformity during diamond preparation. The gas blown in is mainly methane.

Images