Impurity removal equipment for artificial diamond single crystal production

Abstract

The invention relates to the technical field of metallurgical separation, in particular to impurity removal equipment for artificial diamond single crystal production, which comprises a box body, a butterfly valve is rotatably connected to the outer wall of the bottom end of the box body, an air pump is fixedly connected to the outer wall of the box body, and a driving motor is fixedly connected to the outer wall of one end, far away from the air pump, of the box body; a primary impurity removing mechanism is arranged in the box body, a secondary impurity removing mechanism is arranged at the bottom of the primary impurity removing mechanism, and a waste gas filtering mechanism is arranged on the outer wall of the box body. Efficient friction impurity removal and wind tunnel separation of impurities and materials are achieved through the primary impurity removal mechanism, the anti-sinking effect of the materials is achieved through the secondary impurity removal mechanism and an aeration and anti-sinking assembly, the impurities are fully dissolved, waste gas treatment is achieved through the arrangement of the waste gas cleaning mechanism, and the practicability of the equipment is improved through the arrangement of the filter element rapid replacement design; the transparent waste gas filter cartridge can directly observe the state of the rotating fan, timely discover the failure condition of the filter element, and ensure the production reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metallurgical separation, in particular to a kind of impurity removal equipment for synthetic diamond single crystal production. BACKGROUND

[0002] In modern production, production impurity removal equipment is commonly used mechanical equipment, with the development of industry and the actual needs of production development, the demand for production impurity removal equipment is more and more more and more strict, the production impurity removal equipment of prior art has defects, in the process of impurity removal, cannot realize the multi-stage screening of impurities and materials, cannot multi-stage progressive impurity removal, often needs manual multi-device cooperation, time-consuming and laborious.

[0003] Therefore, for the above shortcomings, the present application provides an impurity removal equipment for synthetic diamond single crystal production, which realizes multi-stage screening of impurities and materials by a primary impurity removal mechanism, and realizes multi-stage progressive impurity removal by a secondary impurity removal mechanism, to meet the urgent needs of various industries for production impurity removal equipment. SUMMARY

[0004] To solve the technical problems of the prior art, the present application adopts the technical scheme of an impurity removal equipment for synthetic diamond single crystal production, which comprises: a box body, a butterfly valve is rotatably connected to the bottom end outer wall of the box body, a gas pump is fixedly connected to the outer wall of the box body, a drive motor is fixedly connected to the outer wall of the end of the box body away from the gas pump, a primary impurity removal mechanism is arranged in the box body, a secondary impurity removal mechanism is arranged at the bottom of the primary impurity removal mechanism, and a waste gas filtering mechanism is arranged on the outer wall of the box body; the primary impurity removal mechanism comprises a hopper, an abrasive assembly is arranged in the hopper, a filter screen is fixedly connected to the bottom end outer wall of the hopper, a discharging hopper is fixedly connected to the bottom end outer wall of the hopper, a material cover is rotatably connected to the outer wall of the end of the discharging hopper away from the hopper, a return spring is fixedly connected to the outer wall of the material cover in a symmetrical manner, a stainless steel plasma air rod is arranged in the hopper, and a collection box is slidably connected to the bottom end outer wall of the hopper away from the discharging hopper; the abrasive assembly comprises a feeding roller, a boss friction roller is fixedly connected to the outer wall of the feeding roller in a symmetrical manner, a disturbance plate is fixedly connected to the outer wall of the boss friction roller, a dust raising plate is rotatably connected to the outer wall of the boss friction roller, a fixed shaft is fixedly connected to the outer wall of the end of the boss friction roller away from the feeding roller, an air inlet cylinder is rotatably connected to the outer wall of the end of the boss friction roller away from the feeding roller, and a dust removal air pipe is fixedly connected to the outer wall of the air inlet cylinder.

[0005] Preferably, the outer wall of the hopper is fixedly connected with the inner wall of the box body, one end of the reset spring away from the material cover is fixedly connected with the outer wall of the discharging funnel, the outer wall of the dust raising plate is slidably connected with the outer wall of the hopper, the outer wall of the collecting box is slidably connected with the inner wall of the box body, the outer wall of the stainless steel plasma wind rod is fixedly connected with the inner wall of the box body, the outer wall of the fixed shaft is fixedly connected with the output end of the driving motor, the outer wall of the fixed shaft is rotatably connected with the inner wall of the box body, the outer wall of the air inlet cylinder is fixedly connected with the inner wall of the box body, the outer wall of the dust removal air pipe is fixedly connected with the inner wall of the box body, and the outer wall of the dust removal air pipe is fixedly connected with the outer wall of the air pump. At this time, the air pump starts to work, the high-pressure air in the air pump flows along the dust removal air pipe and the air inlet cylinder, and is blown out from the fine and dense holes pre-provided on the feeding roller and the boss friction roller. Meanwhile, the stainless steel plasma wind rod installed in the hopper also plays a role in static electricity removal treatment of the raised carbon powder. The carbon powder after static electricity removal moves away from the diamond single crystal under the action of the airflow, gradually settles at the end of the hopper away from the discharging funnel, and the settled carbon powder passes through the filter screen and is finally collected by the collecting box. The collecting box is designed in a drawer type, which is convenient for the operator to clean regularly and avoids the influence of carbon powder accumulation on the impurity removal effect.

[0006] Preferably, the secondary impurity removal mechanism comprises a double-layer filter cartridge, a spiral stirring rod is rotatably connected to the inner wall of the double-layer filter cartridge, a stirring motor is fixedly connected to the top end of the double-layer filter cartridge, an extrusion plate is slidably connected to the interlayer inner wall of the double-layer filter cartridge, an aeration assembly is arranged on the outer wall of the double-layer filter cartridge, the outer wall of the aeration assembly is provided with a gas delivery pipe assembly, the outer wall of the double-layer filter cartridge is fixedly connected with a retaining frame in a symmetrical manner, the outer wall of the retaining frame is rotatably connected with an unfolding reset rod, the bottom end of the outer wall of the double-layer filter cartridge is fixedly connected with a rotating rod, and the inner wall is provided with an anti-settling assembly. When the diamond single crystal after primary impurity removal successfully enters the discharging funnel, it enters the secondary impurity removal mechanism stage. The stirring motor in the secondary impurity removal mechanism is started immediately, driving the spiral stirring rod to slide along the inner wall of the double-layer filter cartridge. The spiral stirring blade of the spiral stirring rod can push open the material cover during rotation, stretch the reset spring, and make the diamond single crystal fall into the double-layer filter cartridge in an intermittent manner.

[0007] Preferably, the aeration assembly comprises an aeration cylinder, the inner wall of the aeration cylinder is slidably connected with a waterproof piston, the outer wall of the waterproof piston is fixedly connected with a limiting spring and a protective bellows, at the same time, the spiral stirring rod also drives the extrusion plate to slide along the interlayer inner wall of the double-layer filter cartridge, the extrusion plate will extrude the waterproof piston in the aeration assembly in the sliding process, thereby compressing the limiting spring and the protective bellows, this series of actions makes the high-pressure air in the air pump enter the aeration cylinder through the gas pipe assembly, and then further enter the double-layer filter cartridge, the injection of the high-pressure air makes the solution in the box body present a boiling state, which effectively delays the falling time of the diamond single crystal, so that the surface of the diamond single crystal can be fully contacted with the solvent, and the solvent in the box body is concentrated nitric acid, which can quickly dissolve the carbon powder and carbon powder hard block remaining on the surface of the diamond single crystal.

[0008] Preferably, the anti-settling assembly comprises an air inlet piston, the outer wall of the air inlet piston is fixedly connected with a return spring and a waterproof bellows, when the diamond single crystal is finally deposited at the bottom of the double-layer filter cartridge under the action of gravity, the air pump works again, at this time, the high-pressure air in the air pump pushes away the air inlet piston in the anti-settling assembly through the gas pipe assembly, compresses the return spring and the waterproof bellows, and enters the double-layer filter cartridge, the injection of the high-pressure air makes the solution at the bottom of the box body boil again, so as to lift the deposited diamond single crystal again, so that it is fully contacted with the solvent again, and further dissolves the impurities on the surface.

[0009] Preferably, the aeration assembly is arranged in an array along the outer wall circumference of the double-layer filter cartridge, the outer wall of the spiral stirring rod is fixedly connected with the output end of the stirring motor, the top end of the spiral plate of the spiral stirring rod is slidably connected with the outer wall of the material cover, the inner wall of the extrusion plate is fixedly connected with the outer wall of the spiral stirring rod, the outer wall of the waterproof piston is slidably connected with the outer wall of the extrusion plate, the retaining frame is fixedly connected with the inner wall of the box body through the connecting rod, one end of the limiting spring away from the waterproof piston is fixedly connected with the inner wall of the aeration cylinder, one end of the protective bellows away from the waterproof piston is fixedly connected with the inner wall of the aeration cylinder, and the outer wall of the rotating rod is rotatably connected with the bottom end inner wall of the box body through the support plate, when the diamond single crystal in the double-layer filter cartridge reaches a predetermined stirring duration, the operator rotates the butterfly valve to start discharging the solvent in the box body, after the solvent is completely discharged, the operator opens the cabinet door of the box body and pulls the handle of the double-layer filter cartridge, and under the action of the rotating rod, the double-layer filter cartridge is inclined outward. In this process, the retaining frame is automatically unfolded, and the unfolded reset rod is stretched, after the operator takes out the diamond single crystal, only needs to loosen the handle, and under the elastic force of the unfolded reset rod, the double-layer filter cartridge will automatically return to the original position, so as to prepare for the next impurity removal work.

[0010] Preferably, the anti-sediment assembly is arranged in a circumferential array on the inner wall of the double-layer filter cartridge, the outer wall of the air inlet piston is in sliding connection with the inner wall of the bottom end of the double-layer filter cartridge, the end of the return spring away from the air inlet piston is fixedly connected with the inner wall of the bottom end of the double-layer filter cartridge, the end of the waterproof bellows away from the air inlet piston is fixedly connected with the inner wall of the bottom end of the double-layer filter cartridge, the outer wall of the bottom end of the double-layer filter cartridge and the outer wall of the aeration cylinder are fixedly connected with the outer wall of the gas conveying pipe assembly, the outer wall of the gas conveying pipe assembly is fixedly connected with the outer wall of the air pump, the gas conveying pipe assembly comprises a gas supply pipe fixedly connected with the side wall of the air pump, the outer wall of the gas supply pipe is fixedly connected with an arc-shaped pipe, one end of the arc-shaped pipe is fixedly connected with a connecting pipe, and the two ends of the connecting pipe are fixedly connected with circular pipes, respectively, one end of the gas supply pipe is fixedly connected with an I-shaped anti-sediment pipe, and the high-pressure air in the air pump enters the double-layer filter cartridge through the gas conveying pipe assembly to make the solution boil and delay the falling of the diamond single crystal, so that the diamond single crystal is fully contacted with the mixed solution of concentrated sulfuric acid and concentrated nitric acid, and the surface residual impurities are dissolved, when the single crystal is deposited at the bottom of the double-layer filter cartridge, the air pump pushes the air inlet piston of the anti-sediment assembly through the gas conveying pipe assembly, and high-pressure air is injected again to make the solution boil and lift the single crystal, so that secondary dissolution is realized.

[0011] Preferably, the waste gas filtering mechanism comprises a waste gas filter cylinder, the inner wall of the waste gas filter cylinder is in sliding connection with a filter piston, the outer wall of the filter piston is fixedly connected with a retaining spring, the inner wall of the waste gas filter cylinder is rotatably connected with a rotating fan, the inner wall of the waste gas filter cylinder is fixedly connected with a honeycomb filter cylinder, the inner wall of the honeycomb filter cylinder is in sliding connection with a partition plate, the outer wall of the partition plate is rotatably connected with a limiting plate, and the outer wall of the partition plate is fixedly connected with a self-locking spring, the waste gas cleaning mechanism is arranged, waste gas treatment is realized, and the waste gas generated in the box due to a chemical reaction enters the waste gas filter cylinder under the action of high-pressure air injected by the air pump. The air pressure pushes open the filter piston and blows the rotating fan, so that the waste gas passes through the honeycomb filter cylinder, and the activated carbon in the cylinder adsorbs harmful substances in the waste gas. When the activated carbon is saturated and the rotating speed of the rotating fan decreases, the operator can easily take out the honeycomb filter cylinder and replace the activated carbon by extruding the limiting plate and rotating the partition plate.

[0012] Preferably, the outer wall of the exhaust filter cartridge is fixedly connected with the outer wall of the box body, one end of the retaining spring away from the filter piston is fixedly connected with the inner wall support of the exhaust filter cartridge, the outer wall of the partition plate is slidably connected with the inner wall of the exhaust filter cartridge, the limiting plate is fixedly connected with the exhaust filter cartridge through the inner wall clamping groove of the exhaust filter cartridge, and one end of the self-locking spring away from the partition plate is fixedly connected with the limiting plate.

[0013] The beneficial effects of the present application are as follows: 1. The primary impurity removal mechanism is provided, efficient friction impurity removal and wind tunnel separation are realized, the abrasive assembly of the primary impurity removal mechanism includes a feeding roller, a boss friction roller and a disturbance plate, the feeding roller and the boss friction roller are rotated by a driving motor driving a fixed shaft, when the disturbance plate rotates with the boss friction roller, the synthetic diamond single crystals in the hopper are caused to rub against each other, surface carbon powder and carbon powder hard blocks are removed, at the same time, the air pump injects high-pressure air into the hopper through the dust removal air pipe and the air inlet cylinder, forms a wind tunnel, and the raised carbon powder is subjected to electrostatic treatment by the stainless steel plasma air rod, so that the carbon powder is separated from the diamond single crystals under the action of the air flow and is settled to the collection box through the filter screen.

[0014] 2. The secondary impurity removal mechanism is provided, impurities are fully dissolved through the aeration and anti-settlement assembly, the spiral stirring rod of the secondary impurity removal mechanism drives the extrusion plate to slide along the interlayer of the double-layer filter cylinder, the waterproof piston in the aeration assembly is extruded, the high-pressure air in the air pump enters the double-layer filter cylinder through the gas conveying pipe assembly, the solution is boiled, the diamond single crystals are prevented from falling, and the diamond single crystals are fully contacted with the mixed solution of concentrated sulfuric acid and concentrated nitric acid, the surface residual impurities are dissolved, when the single crystals are deposited at the bottom of the double-layer filter cylinder, the air pump pushes open the air inlet piston of the anti-settlement assembly through the gas conveying pipe assembly, high-pressure air is injected again, the solution is boiled to lift the single crystals, and secondary dissolution is realized.

[0015] 3. The exhaust gas cleaning mechanism is provided, exhaust gas generated in the box body due to chemical reaction enters the exhaust filter cartridge under the action of high-pressure air injected by the air pump, the air pressure pushes open the filter piston and blows the rotating fan, so that the exhaust gas passes through the honeycomb filter cartridge, the activated carbon in the cartridge adsorbs harmful substances in the exhaust gas, when the activated carbon is saturated and causes the rotating fan to slow down, the operator can easily take out the honeycomb filter cartridge and replace the activated carbon by extruding the limiting plate and rotating the partition plate.

[0016] 4. The utility of the equipment is improved by the quick replacement design of the filter element, the honeycomb filter cartridge of the waste gas filtering mechanism is fixed in the waste gas filtering cartridge through the partition plate and the limiting plate, the self-locking spring is arranged between the limiting plate and the partition plate, when the activated carbon needs to be replaced, the limiting plate is inwardly extruded to compress the self-locking spring, the partition plate can be disassembled and the honeycomb filter cartridge can be taken out, reverse operation can reset after replacement, the rotating fan state of the transparent waste gas filtering cartridge can be directly observed, the filter element failure condition can be found in time, waste gas treatment failure caused by filter element failure is avoided, the equipment is ensured to be always in the running state, and production reliability is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the present application; Figure 2 is a back structure schematic diagram of the present application; Figure 3 is a schematic diagram of the internal structure of the present application; Figure 4 is a schematic diagram of the primary impurity removal mechanism of the present application; Figure 5 is a schematic diagram of the abrasive assembly of the present application; Figure 6 is a schematic diagram of the secondary impurity removal mechanism of the present application; Figure 7 is a schematic diagram of the double-layer filter cartridge structure; Figure 8 is a schematic diagram of the aeration assembly; Figure 9 is a schematic diagram of the anti-settling assembly; Figure 10 is a schematic diagram of the reset and expansion rod; Figure 11 is a schematic diagram of the waste filtering mechanism of the present application; Figure 12 is a schematic diagram of the honeycomb filter cartridge of the present application; Figure 13 is a schematic diagram of the limiting plate of the present application; Figure 14 is a schematic diagram of the gas pipe assembly of the present application.

[0018] In the figure: 1, box; 2, primary impurity removal mechanism; 20, hopper; 21, abrasive assembly; 210, feeding roller; 211, boss friction roller; 212, disturbance plate; 213, dust raising plate; 214, fixed shaft; 215, air inlet cylinder; 216, dust removal air pipe; 22, filter screen; 23, discharging hopper; 24, material cover; 25, return spring; 26, collection box; 27, stainless steel plasma air rod; 3, secondary impurity removal mechanism; 30, double-layer filter cartridge; 31, spiral stirring rod; 32, stirring motor; 33, extrusion plate; 34, aeration assembly; 340, aeration cylinder; 341, waterproof piston; 342, limit spring; 343, protective bellows; 35, air conveying pipe assembly; 36, retaining frame; 37, expansion return rod; 38, rotating rod; 39, anti-settling assembly; 390, air inlet piston; 391, return spring; 392, waterproof bellows; 4, waste gas filtration mechanism; 5, butterfly valve; 6, air pump; 7, driving motor; 40, waste gas filter cartridge; 41, filter piston; 42, retaining spring; 43, rotating fan; 44, honeycomb filter cartridge; 45, partition plate; 46, limit plate; 47, self-locking spring. DETAILED DESCRIPTION

[0019] The application will be further described below in conjunction with the drawings and specific embodiments. The embodiments of the application are given for illustrative and descriptive purposes only and are not exhaustive or limiting of the application. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the application and its practical application and to enable others skilled in the art to best utilize the application in various embodiments with various modifications as are suited to the particular use contemplated.

[0020] Embodiment:

[0021] Please refer to Figure 1 - Figure 14The application provides a kind of technical scheme: a kind of impurity removal equipment for synthetic diamond single crystal production, it is characterized in that, including: box 1, the bottom end outer wall of box 1 is rotatably connected with butterfly valve 5, the outer wall of box 1 is fixedly connected with air pump 6, the outer wall of one end of box 1 away from air pump 6 is fixedly connected with drive motor 7, the inside of box 1 is equipped with primary impurity removal mechanism 2, the bottom of primary impurity removal mechanism 2 is equipped with secondary impurity removal mechanism 3, the outer wall of box 1 is equipped with waste gas filtering mechanism 4;Primary impurity removal mechanism 2 includes hopper 20, the inside of hopper 20 is equipped with abrasive assembly 21, the bottom end outer wall of hopper 20 is fixedly connected with filter screen 22, the bottom end outer wall of hopper 20 is fixedly connected with discharging hopper 23, the outer wall of one end of discharging hopper 23 away from hopper 20 is rotatably connected with material cover 24, the outer wall of material cover 24 is fixedly connected with return spring 25, the inside of hopper 20 is equipped with stainless steel plasma wind stick 27, the bottom end outer wall of hopper 20 away from discharging hopper 23 is slidably connected with collection box 26;Abrasive assembly 21 includes, feed roller 210, the outer wall of feed roller 210 is fixedly connected with boss friction roller 211, the outer wall of boss friction roller 211 is fixedly connected with disturbance plate 212 boss friction roller 211 The outer wall of is rotatably connected with dust raising plate 213, the outer wall of one end of boss friction roller 211 away from feed roller 210 is fixedly connected with fixed shaft 214, the outer wall of one end of boss friction roller 211 away from feed roller 210 is rotatably connected with air inlet cylinder 215, the outer wall of air inlet cylinder 215 is fixedly connected with dust removal air pipe 216.

[0022] The outer wall of hopper 20 is fixedly connected with the inner wall of box 1, one end of return spring 25 away from material cover 24 is fixedly connected with the outer wall of discharging hopper 23, the outer wall of dust raising plate 213 is slidably connected with the outer wall of hopper 20, the outer wall of collection box 26 is slidably connected with the inner wall of box 1, the outer wall of stainless steel plasma wind stick 27 is fixedly connected with the inner wall of box 1, the outer wall of fixed shaft 214 is fixedly connected with the output end of drive motor 7, the outer wall of fixed shaft 214 is rotatably connected with the inner wall of box 1, the outer wall of air inlet cylinder 215 is fixedly connected with the inner wall of box 1, the outer wall of dust removal air pipe 216 is fixedly connected with the inner wall of box 1, the outer wall of dust removal air pipe 216 is fixedly connected with the outer wall of air pump 6.

[0023] Secondary impurity removal mechanism 3 includes double-layer filter cartridge 30, the inner wall of double-layer filter cartridge 30 is rotatably connected with spiral stirring rod 31, the top end of double-layer filter cartridge 30 is fixedly connected with stirring motor 32, the interlayer inner wall of double-layer filter cartridge 30 is slidably connected with extrusion plate 33, the outer wall of double-layer filter cartridge 30 is equipped with aeration assembly 34, the outer wall of aeration assembly 34 is equipped with gas pipe assembly 35, the outer wall of double-layer filter cartridge 30 is fixedly connected with retaining frame 36, the outer wall of retaining frame 36 is rotatably connected with unfolding reset rod 37, the bottom end outer wall of double-layer filter cartridge 30 is fixedly connected with rotating rod 38, the inner wall is equipped with anti-sediment assembly 39.

[0024] The aeration assembly 34 comprises an aeration cylinder 340, the inner wall of the aeration cylinder 340 is slidingly connected with a waterproof piston 341, the outer wall of the waterproof piston 341 is fixedly connected with a limiting spring 342 and a protective bellows 343.

[0025] The anti-settling assembly 39 comprises an air inlet piston 390, the outer wall of the air inlet piston 390 is fixedly connected with a return spring 391 and a waterproof bellows 392.

[0026] The aeration assembly 34 is distributed in a circular array along the outer wall of the double-layer filter cylinder 30, the outer wall of the spiral stirring rod 31 is fixedly connected with the output end of the stirring motor 32, the top end of the spiral plate of the spiral stirring rod 31 is slidingly connected with the outer wall of the material cover 24, the inner wall of the extrusion plate 33 is fixedly connected with the outer wall of the spiral stirring rod 31, the outer wall of the waterproof piston 341 is slidingly connected with the outer wall of the extrusion plate 33, the retaining frame 36 is fixedly connected with the inner wall of the box body 1 through the connecting rod, one end of the limiting spring 342 away from the waterproof piston 341 is fixedly connected with the inner wall of the aeration cylinder 340, one end of the protective bellows 343 away from the waterproof piston 341 is fixedly connected with the inner wall of the aeration cylinder 340, and the outer wall of the rotating rod 38 is rotatably connected with the inner wall of the bottom end of the box body 1 through the support plate.

[0027] The anti-settling assembly 39 is distributed in a circular array on the inner wall of the double-layer filter cylinder 30, the outer wall of the air inlet piston 390 is slidingly connected with the bottom end inner wall of the double-layer filter cylinder 30, one end of the return spring 391 away from the air inlet piston 390 is fixedly connected with the bottom end inner wall of the double-layer filter cylinder 30, one end of the waterproof bellows 392 away from the air inlet piston 390 is fixedly connected with the bottom end inner wall of the double-layer filter cylinder 30, the bottom end outer wall of the double-layer filter cylinder 30 and the outer wall of the aeration cylinder 340 are fixedly connected with the outer wall of the gas conveying pipe assembly 35, and the outer wall of the gas conveying pipe assembly 35 is fixedly connected with the outer wall of the air pump 6.

[0028] The waste gas filtering mechanism 4 comprises a waste gas filtering cylinder 40, the inner wall of the waste gas filtering cylinder 40 is slidingly connected with a filtering piston 41, the outer wall of the filtering piston 41 is fixedly connected with a retaining spring 42, the inner wall of the waste gas filtering cylinder 40 is rotatably connected with a rotating fan 43, the inner wall of the waste gas filtering cylinder 40 is fixedly connected with a honeycomb filter cylinder 44, the inner wall of the honeycomb filter cylinder 44 is slidingly connected with a partition plate 45, the outer wall of the partition plate 45 is rotatably connected with a limiting plate 46, and the outer wall of the partition plate 45 is fixedly connected with a self-locking spring 47.

[0029] The outer wall of the waste gas filtering cylinder 40 is fixedly connected with the outer wall of the box body 1, one end of the retaining spring 42 away from the filtering piston 41 is fixedly connected with the inner wall support of the waste gas filtering cylinder 40, the outer wall of the partition plate 45 is slidingly connected with the inner wall of the waste gas filtering cylinder 40, the limiting plate 46 is fixedly connected with the waste gas filtering cylinder 40 through the inner wall clamping groove of the waste gas filtering cylinder 40, and one end of the self-locking spring 47 away from the partition plate 45 is fixedly connected with the limiting plate 46.

[0030] Working principle: When the primary impurity removal of the synthetic diamond single crystal is carried out, the sealing cover at the top end of the box 1 is opened, and the synthetic diamond single crystal to be removed is poured into the primary impurity removal mechanism 2. These just poured synthetic diamond single crystals are accumulated in the hopper 20 of the primary impurity removal mechanism 2. The hopper 20 is designed in an inverted conical shape, and the inner wall is specially treated to prevent slipping to prevent the diamond single crystal from slipping before the treatment starts. After the driving motor 7 is started, the feed roller 210 and the boss friction roller 211 in the abrasive assembly 21 are driven to start rotating by the fixed shaft 214. The surface of the feed roller 210 is covered with fine anti-skid lines, and the boss friction roller 211 is uniformly distributed with a plurality of raised disturbance plates 212. Under the synergistic action of the two, the diamond single crystals rub against each other in the hopper 20, which can not only make the unreacted carbon powder on the surface of the diamond single crystal and the hard blocks formed by the extrusion of the carbon powder fall off, but also will not cause damage to the diamond single crystal itself. With the continuous friction of the diamond single crystal, the rotating dust lifting plate 213 lifts the fallen carbon powder to make it float in the hopper 20. At this time, the air pump 6 starts to work, and the high-pressure air in the inside flows along the dust removal air pipe 216 and the air inlet cylinder 215, and is blown out from the fine holes pre-set on the feed roller 210 and the boss friction roller 211. At the same time, the stainless steel plasma air rod 27 installed in the hopper 20 also plays a role to remove static electricity from the lifted carbon powder. After the electrostatic removal of the carbon powder, it moves away from the diamond single crystal under the action of the air flow, and gradually settles at the end away from the discharge hopper 23 in the hopper 20. The settled carbon powder passes through the filter screen 22 and is finally collected by the collection box 26. The collection box 26 is designed in a drawer type, which is convenient for the operator to clean regularly and avoids the accumulation of carbon powder affecting the impurity removal effect. When the diamond single crystal that has completed the primary impurity removal successfully enters the discharge hopper 23, it enters the secondary impurity removal mechanism 3 stage. The stirring motor 32 in the secondary impurity removal mechanism 3 is started immediately to drive the spiral stirring rod 31 to slide along the inner wall of the double-layer filter cartridge 30. The spiral stirring blades of the spiral stirring rod 31 can push open the material cover 24 during rotation, stretch the reset spring 25, so that the diamond single crystal falls into the double-layer filter cartridge 30 in an intermittent manner. At the same time, the spiral stirring rod 31 also drives the extrusion plate 33 to slide along the inner wall of the double-layer filter cartridge 30. The extrusion plate 33 will extrude the waterproof piston 341 in the aeration assembly 34 during sliding, and then compress the limiting spring 342 and the protection bellows 343. This series of actions make the high-pressure air in the air pump 6 enter the aeration cylinder 340 through the gas conveying pipe assembly 35, and then further enter the double-layer filter cartridge 30. The injection of high-pressure air makes the solution in the box 1 present a boiling state, which effectively delays the falling time of the diamond single crystal, so that the surface of the diamond single crystal can be fully contacted with the solvent. The solvent in the box 1 is concentrated nitric acid, which can quickly dissolve the carbon powder and carbon powder hard block remaining on the surface of the diamond single crystal.

[0031] When the diamond single crystal is finally deposited at the bottom of the double-layer filter cylinder 30 under the action of gravity, the air pump 6 works again, at this time, the high-pressure air in the air pump 6 pushes the air inlet piston 390 in the anti-settlement assembly 39, compresses the return spring 391 and the waterproof bellows 392, and enters the double-layer filter barrel, the injection of high-pressure air makes the solution at the bottom of the box 1 boil again, re-lifts the deposited diamond single crystal, and makes it contact with the solvent again, further dissolving the impurities on the surface. During the entire impurity removal process, due to the chemical reaction between the concentrated nitric acid solvent in the box 1 and the carbon powder and hard block on the surface of the diamond single crystal, nitrogen dioxide waste gas is generated, as the high-pressure gas in the air pump 6 continuously enters the box 1, the pressure in the box 1 gradually increases, prompting the waste gas to enter the waste gas filtering mechanism 4. The waste gas first enters the waste gas filter cylinder 40, the strong air pressure pushes open the filter piston 41, compresses the retaining spring 42, and blows the rotating fan 43. The rotation of the rotating fan 43 not only helps the flow of waste gas, but also makes the waste gas more evenly enter the honeycomb filter cylinder 44. The honeycomb filter cylinder 44 is filled with high-activity activated carbon, which has a rich pore structure and can efficiently adsorb harmful substances in the waste gas. The filter barrel is made of transparent material, which facilitates the operator to observe the state of the rotating fan 43 at any time. When the adsorption capacity of the activated carbon in the honeycomb filter cylinder 44 reaches the upper limit, the gap between the activated carbons will shrink due to the filling of the adsorbed substances, causing the passage to be closed and the air to be difficult to exhaust. At this time, the rotating speed of the rotating fan 43 will obviously decrease and become very slow, and the operator can timely find that the activated carbon needs to be replaced by observing the change of the rotating speed of the rotating fan 43. When replacing, the operator extrudes and rotates the limiting plate 46, extrudes the self-locking spring 47, and then easily takes out the partition plate 45 and the limiting plate 46. Then the invalid activated carbon in the honeycomb filter cylinder 44 is taken out and replaced with new activated carbon. After replacement, the limiting plate 46 and the partition plate 45 are reinstalled to ensure the normal operation of the waste gas filtering system. When the diamond single crystal in the double-layer filter cylinder 30 reaches the predetermined stirring time, the operator rotates the butterfly valve 5 to start discharging the solvent in the box 1. After the solvent is completely discharged, the operator opens the cabinet door of the box 1 and pulls the handle of the double-layer filter cylinder 30. Under the action of the rotating rod 38, the double-layer filter cylinder 30 is inclined outward. During this process, the retaining frame 36 automatically expands, and the expansion return rod 37 is stretched. When the operator takes out the diamond single crystal, he only needs to loosen the handle, and under the elastic force of the expansion return rod 37, the double-layer filter cylinder 30 will automatically return to the original position, ready for the next impurity removal work.

[0032] Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art and related fields without creative labor should belong to the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application are implemented according to the conventional means in the art, if not specifically described and limited.

Claims

1. An impurity removal device for producing artificial diamond single crystals, characterized in that: include: A box body, wherein a butterfly valve is rotatably connected to the outer wall of the bottom end of the box body, an air pump is fixedly connected to the outer wall of the box body, a drive motor is fixedly connected to the outer wall of the box body away from the air pump, a primary impurity removal mechanism is provided inside the box body, a secondary impurity removal mechanism is provided at the bottom of the primary impurity removal mechanism, and an exhaust gas filtering mechanism is provided on the outer wall of the box body; The primary impurity removal mechanism includes a hopper, an abrasive assembly is provided inside the hopper, a filter is fixedly connected to the outer wall of the bottom end of the hopper, a discharge funnel is fixedly connected to the outer wall of the bottom end of the hopper, a material cover is rotatably connected to the outer wall of the end of the discharge funnel away from the hopper, a return spring is symmetrically fixed to the outer wall of the material cover, a stainless steel plasma wind rod is provided inside the hopper, and a collection box is slidably connected to the outer wall of the bottom end of the hopper away from the discharge funnel; The abrasive assembly includes a feed roller, the outer wall of the feed roller is symmetrically fixedly connected to a boss friction roller, the outer wall of the boss friction roller is fixedly connected to a disturbance plate, the outer wall of the boss friction roller is rotatably connected to a dust plate, the outer wall of the boss friction roller at one end away from the feed roller is fixedly connected to a fixed shaft, the outer wall of the boss friction roller at one end away from the feed roller is rotatably connected to an air inlet tube, and the outer wall of the air inlet tube is fixedly connected to a dust removal air duct.

2. The impurity removal equipment for producing artificial diamond single crystals according to claim 1, characterized in that: The outer wall of the hopper is fixedly connected to the inner wall of the box body, the end of the return spring away from the material cover is fixedly connected to the outer wall of the discharge funnel, the outer wall of the dust plate is slidably connected to the outer wall of the hopper, the outer wall of the collecting box is slidably connected to the inner wall of the box body, the outer wall of the stainless steel plasma wind rod is fixedly connected to the inner wall of the box body, the outer wall of the fixed shaft is fixedly connected to the output end of the drive motor, the outer wall of the fixed shaft is rotatably connected to the inner wall of the box body, the outer wall of the air inlet cylinder is fixedly connected to the inner wall of the box body, the outer wall of the dust removal air duct is fixedly connected to the inner wall of the box body, and the outer wall of the dust removal air duct is fixedly connected to the outer wall of the air pump.

3. The impurity removal equipment for producing artificial diamond single crystals according to claim 1, characterized in that: The secondary impurity removal mechanism includes a double-layer filter cartridge, the inner wall of the double-layer filter cartridge is rotatably connected to a spiral stirring rod, the top of the double-layer filter cartridge is fixedly connected to a stirring motor, the inner wall of the interlayer of the double-layer filter cartridge is slidably connected to an extrusion plate, the outer wall of the double-layer filter cartridge is provided with an aeration assembly, the outer wall of the aeration assembly is provided with an air pipe assembly, the outer wall of the double-layer filter cartridge is symmetrically fixedly connected to a retaining frame, the outer wall of the retaining frame is rotatably connected to an expansion and reset rod, the outer wall of the bottom end of the double-layer filter cartridge is fixedly connected to a rotating rod, and the inner wall is provided with an anti-sinking assembly.

4. The impurity removal equipment for producing artificial diamond single crystals according to claim 3, characterized in that: The aeration assembly comprises an aeration cylinder, the inner wall of the aeration cylinder is slidably connected to a waterproof piston, and the outer wall of the waterproof piston is fixedly connected to a limit spring and a protective bellows.

5. The impurity removal equipment for producing artificial diamond single crystals according to claim 3, characterized in that: The anti-sinking component includes an air intake piston, and the outer wall of the air intake piston is fixedly connected with a return spring and a waterproof bellows.

6. The impurity removal equipment for producing artificial diamond single crystals according to claim 4, characterized in that: The aeration components are distributed in a circular array along the outer wall of the double-layer filter cartridge, the outer wall of the spiral stirring rod is fixedly connected to the output end of the stirring motor, the top of the spiral plate of the spiral stirring rod is slidingly connected to the outer wall of the material cover, the inner wall of the extrusion plate is fixedly connected to the outer wall of the spiral stirring rod, the outer wall of the waterproof piston is slidingly connected to the outer wall of the extrusion plate, the retaining frame is fixedly connected to the inner wall of the box through a connecting rod, the end of the limit spring away from the waterproof piston is fixedly connected to the inner wall of the aeration cylinder, the end of the protective bellows away from the waterproof piston is fixedly connected to the inner wall of the aeration cylinder, and the outer wall of the rotating rod is rotatably connected to the inner wall of the bottom end of the box through a support plate.

7. The impurity removal equipment for producing artificial diamond single crystals according to claim 5, characterized in that: The anti-sinking components are distributed in a circular array on the inner wall of the double-layer filter cartridge, the outer wall of the air intake piston is slidingly connected to the inner wall of the bottom end of the double-layer filter cartridge, the end of the return spring away from the air intake piston is fixedly connected to the inner wall of the bottom end of the double-layer filter cartridge, the end of the waterproof bellows away from the air intake piston is fixedly connected to the inner wall of the bottom end of the double-layer filter cartridge, the outer wall of the bottom end of the double-layer filter cartridge and the outer wall of the aeration cylinder are both fixedly connected to the outer wall of the air pipe assembly, and the outer wall of the air pipe assembly is fixedly connected to the outer wall of the air pump.

8. The impurity removal equipment for producing artificial diamond single crystals according to claim 5, characterized in that: The exhaust gas filtering mechanism includes an exhaust gas filter cartridge, the inner wall of the exhaust gas filter cartridge is slidably connected to a filter piston, the outer wall of the filter piston is fixedly connected to a retaining spring, the inner wall of the exhaust gas filter cartridge is rotatably connected to a rotating fan, the inner wall of the exhaust gas filter cartridge is fixedly connected to a honeycomb filter cartridge, the inner wall of the honeycomb filter cartridge is slidably connected to a partition, the outer wall of the partition is rotatably connected to a limit plate, and the outer wall of the partition is fixedly connected to a self-locking spring.

9. The impurity removal equipment for producing artificial diamond single crystals according to claim 8, characterized in that: The outer wall of the exhaust gas filter cartridge is fixedly connected to the outer wall of the box body, the end of the retaining spring away from the filter piston is fixedly connected to the inner wall bracket of the exhaust gas filter cartridge, the outer wall of the partition is slidably connected to the inner wall of the exhaust gas filter cartridge, the limit plate is fixedly connected to the exhaust gas filter cartridge through the inner wall groove of the exhaust gas filter cartridge, and the end of the self-locking spring away from the partition is fixedly connected to the limit plate.

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