A gallate laser crystal preparation device

Abstract

The present invention relates to the technical field of laser crystal preparation, and discloses a gallate laser crystal preparation device, comprising: a crucible, a pulling assembly and a first reflux assembly, wherein the first reflux assembly comprises a collecting hood, a high-temperature scraper assembly and a reflux pipe, wherein the collecting hood is connected to the top of the crucible and is used to collect condensed volatile substances, the high-temperature scraper assembly is connected to the pulling assembly and is used to melt and scrape off the volatile substances on the inner wall of the collecting hood, and the reflux pipe is arranged on one side of the crucible and is used to guide the scraped melted volatile substances into the laser crystal raw material at the bottom of the crucible. The present invention adopts a high-temperature scraper assembly to scrape off the volatile substances attached to the collecting hood, so that the volatile substances are in a molten state when in contact with the high-temperature scraper assembly, thereby reducing the difficulty of cleaning the volatile substances, and at the same time, a reflux pipe is arranged to guide the melted volatile substances so that the volatile substances flow back from the edge into the laser crystal raw material of the crucible, thereby improving the quality of the prepared laser crystal.

Description

Technical Field

[0001] The present invention relates to the technical field of laser crystal preparation, and more specifically, to a device for preparing a gallate laser crystal. Background Art

[0002] Gallate laser crystals (such as gallium oxide Ga2O3) are high-performance semiconductor materials with strong electronic, optical and thermal properties. With the development of sensors, filters, circuit design and visual imaging technology, they have broad application prospects. When preparing laser crystals, the end of the seed crystal is extended into the melting zone, and then the seed crystal is pulled out from the source rod in the opposite direction at an appropriate speed to grow a crystal. When the temperature exceeds 1300 degrees, the gallium component in the raw material gradually decreases due to volatilization, resulting in a decrease in the gallium content in the component over time.

[0003] In the prior art, such as the Chinese patent with application number CN202022456111.7, a device for preparing a crystal blank is disclosed, including a scraper, which extends from the vertex of the inner side of the collecting hood to the bottom of the collecting hood and is close to the inner surface of the collecting hood and / or is located near the inner surface of the collecting hood. The continuously moving scraper scrapes the crystal raw material condensed on the inner surface of the collecting hood onto the surface of the molten crystal raw material and melts it in the molten crystal raw material, forming a dynamic balance; reducing the change in the composition of the crystal raw material due to the change of volatile substances during the production of the crystal blank. However, in this device, the volatiles condense in the collecting hood, and the resistance when the scraper contacts the solid condensate is large, and the condensate is not easy to scrape off and may even adhere to the scraper surface.

[0004] Therefore, it is necessary to propose a gallate laser crystal preparation device to at least partially solve the problems existing in the prior art. Summary of the invention

[0005] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0006] In order to at least partially solve the above problems, the present invention provides a gallate laser crystal preparation device, comprising:

[0007] A crucible, a pulling assembly and a first reflux assembly. The crucible contains molten laser crystal raw material. The pulling assembly is arranged at the center of the crucible. The pulling assembly drives the seed crystal rod to move upward while rotating, and the bottom end of the seed crystal rod extends into the molten laser crystal raw material. The first reflux assembly includes a collecting hood, a high-temperature scraper assembly and a reflux pipe. The collecting hood is connected to the top of the crucible to collect condensed volatile substances. The high-temperature scraper assembly is connected to the pulling assembly to melt the volatile substances on the inner wall of the collecting hood and then scrape them off. The reflux pipe is arranged on one side of the crucible to guide the scraped molten volatile substances into the laser crystal raw material at the bottom of the crucible.

[0008] Preferably, the collecting hood is configured to be conical, and a cooling pipe is provided in the plate body of the collecting hood.

[0009] Preferably, a heat preservation cylinder is arranged outside the crucible and the collecting cover.

[0010] Preferably, the lifting assembly includes: a drive box, a spiral casing, a lifting rod and a lifting hanger, the drive box is connected to the top of the insulation cylinder, the output end of the drive box is connected to the spiral casing and drives it to rotate, the lifting rod is screwed to the lower part of the spiral casing, and the lifting hanger is connected between the lifting rod and the seed crystal rod.

[0011] Preferably, the high-temperature scraper assembly includes: a scraper groove, a scraper support plate, a heating plate and an elastic member. The top of the scraper support plate is connected to the screw sleeve, and the bottom end of the scraper support plate is tilted downward and is set using the conical surface of the collecting cover; a plurality of elastic members are evenly arranged on the top of the scraper support plate, and the scraper groove is connected to the top of the elastic member; the heating plate is connected to the top of the scraper support plate for heating the bottom of the scraper groove.

[0012] Preferably, a scraper is connected to the center of the scraper groove, the height of the scraper is higher than the height of the scraper groove, and the scraper is in contact with the inner wall of the collection cover.

[0013] Preferably, a collecting pipe is hinged at the bottom end of the scraper trough, a sealing plate is movably arranged in the collecting pipe, a first spring is connected between the bottom end of the sealing plate and the bottom of the collecting pipe, and an electromagnetic block group is correspondingly connected to the bottom end of the sealing plate and the bottom of the collecting pipe, and a repulsive force is generated when the electromagnetic block group is energized;

[0014] A hydraulic support rod is hinged on the side end of the scraper support plate, and the output end of the hydraulic support rod is connected to the bottom end of the collecting pipe. An in-position detection sensor is provided on the collecting pipe. When the positions of the collecting pipe and the return pipe correspond, the hydraulic support rod is started to be retracted, and the cross-section of the return pipe is set to an arc shape.

[0015] Preferably, the gallate laser crystal preparation device further comprises: a second reflux component, the second reflux component comprising:

[0016] A slip ring, the slip ring is connected to the front and rear sides of the inner wall of the crucible through a bracket, a slide groove is provided on the inner wall of the slip ring, and a fan blade slide is slidably arranged between the top wall and the bottom wall of the slide groove;

[0017] A follower ring connected to the outside of the screw sleeve;

[0018] The choke blades are evenly connected to the outer wall of the follower ring, the choke blades are connected to the fan blade slide, and the choke blades are connected to a plurality of arc plates.

[0019] Preferably, a rack is connected to the side wall of the slide groove, and the fan blade slide is opened at one end close to the rack. The fan blade slide includes: a first gear, a second gear, a return blade shaft and a return blade. The first gear is rotatably connected to the inner wall of the fan blade slide, and the side extends into the slide groove to mesh with the rack; the second gear is rotatably connected to the inner wall of the fan blade slide, and is meshed on the side of the first gear close to the follower ring. The return blade shaft is connected to the center of the second gear and extends vertically downward. A plurality of return blades are evenly connected to the return blade shaft, and when the return blade rotates, an airflow rotating from top to bottom is formed.

[0020] Preferably, a bent rod is hinged at the top end of the fan blade slide and a coil spring is provided at the hinge, and the other end of the bent rod is connected to the end of the flow-blocking blade through a second spring;

[0021] The inner wall of the follower ring is evenly connected with a plurality of telescopic wedge blocks, and the outer wall of the screw casing is evenly connected with a plurality of shifting blocks. When the screw casing rotates forward, the shifting blocks contact the side surfaces of the wedge blocks to form a synchronous transmission structure; when the screw casing rotates reversely, the shifting blocks contact the inclined surfaces of the wedge blocks to press the wedge blocks into the inside of the follower ring.

[0022] Compared with the prior art, the present invention has at least the following beneficial effects:

[0023] The present invention provides a gallate laser crystal preparation device, which uses a high-temperature scraper assembly to scrape off volatiles attached to a collection hood, so that the volatiles are in a molten state when in contact with the high-temperature scraper assembly, thereby reducing the difficulty of cleaning the volatiles. At the same time, a reflux pipe is provided to guide the molten volatiles so that they flow back from the edge into the laser crystal raw material in the crucible, thereby reducing the change in crystal quality caused by the volatilization of substances in the crystal raw material composition during the laser crystal preparation process, maintaining the stability of the content of volatile substances such as gallium during the growth of the laser crystal, and improving the quality of the prepared laser crystal;

[0024] By providing a reflux pipe, the melted volatile substances can reflux through the edge of the crucible, and the space in the reflux pipe is limited, so the influence of the high-temperature airflow is small, which effectively solves the problem that when the melted volatile substances directly fall into the crucible, they are easily volatilized again in a large range of the upper space of the crucible due to the influence of the high-temperature airflow, thereby ensuring the stable reflux of the volatile substances and reducing the influence of the loss of the volatile substances on the components in the prepared crystals;

[0025] A second reflux component is used. As the preparation process proceeds, a horizontal airflow barrier is formed and a swirling airflow is formed near the edge of the choke blade. When the volatiles flow to the edge of the choke blade as the choke blade rotates, they then flow downward with the swirling airflow and reflux into the laser crystal raw material, thereby realizing the reflux of the volatiles and preventing the volatiles from accumulating around the choke blade or escaping through the gap between the slip ring and the inner wall of the crucible.

[0026] The gallate laser crystal preparation device described in the present invention, other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It is a schematic structural diagram of a gallate laser crystal preparation device of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the high temperature scraper assembly in the present invention;

[0030] Figure 3 It is a schematic diagram of the cross-sectional structure of the collecting tube in the present invention;

[0031] Figure 4 It is a schematic diagram of the cross-sectional structure of the scraper groove in the present invention;

[0032] Figure 5 It is a schematic diagram of the cross-sectional structure of the reflux pipe in the present invention;

[0033] Figure 6 is a top view of the second reflux assembly in the present invention;

[0034] Figure 7 For the present invention Figure 6 A schematic diagram of the local enlarged structure at point A in the middle;

[0035] Figure 8 It is a schematic diagram of the transverse cross-sectional structure of the fan blade carriage in the present invention;

[0036] Fig. 9 It is a schematic diagram of the longitudinal cross-sectional structure of the fan blade carriage in the present invention;

[0037] Fig.10 It is a schematic diagram of the cross-sectional structure of the follower ring in the present invention;

[0038] Fig.11 For the present invention Fig.10 Schematic diagram of the local enlarged structure at point B in the middle.

[0039] In the figure: 1. crucible; 2. seed crystal rod; 3. drive box; 4. screw sleeve; 5. lifting rod; 6. lifting hanger; 7. insulation tube; 11. collecting cover; 12. high temperature scraper assembly; 13. return pipe; 14. scraper groove; 15. scraper support plate; 16. heating plate; 17. elastic member; 18. scraper; 19. collecting pipe; 20. sealing plate; 21. first spring; 22. electromagnetic block group; 23. hydraulic support rod; 31. slip ring; 32. slide groove; 33. follower ring; 34. flow-blocking blade; 35. fan blade slide; 36. arc plate; 37. rack; 38. first gear; 39. second gear; 40. return blade shaft; 41. return blade; 42. bent rod; 43. wedge block; 44. shift block; 45. second spring. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0041] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0042] Embodiment 1:

[0043] like Figure 1 As shown, the present invention provides a gallate laser crystal preparation device, comprising:

[0044] A crucible 1, a pulling assembly and a first reflux assembly. The crucible 1 contains molten laser crystal raw material. The pulling assembly is arranged at the center of the crucible 1. The pulling assembly drives the seed crystal rod 2 to move upward while rotating, and the bottom end of the seed crystal rod 2 extends into the molten laser crystal raw material; the first reflux assembly includes a collecting hood 11, a high-temperature scraper assembly 12 and a reflux pipe 13. The collecting hood 11 is connected to the top of the crucible 1 and is used to collect condensed volatile substances. The high-temperature scraper assembly 12 is connected to the pulling assembly and is used to melt the volatile substances on the inner wall of the collecting hood 11 and then scrape them off. The reflux pipe 13 is arranged on one side of the crucible 1 and is used to guide the scraped molten volatiles into the laser crystal raw material at the bottom of the crucible 1.

[0045] A heat preservation cylinder 7 is arranged outside the crucible 1 and the collecting cover 11 .

[0046] The working principle and beneficial effects of the above technical solution are:

[0047] A gallate laser crystal preparation device is disclosed. When preparing the gallate laser crystal, a heating device is used to heat a crucible 1 so that the laser crystal raw material in the crucible 1 is in a molten state. A driving box 3 drives a pulling component to move a seed crystal rod 2 into the crucible 1. The crystal generated by heating the laser crystal raw material in the crucible 1 adheres to the seed crystal rod 2 and grows upward with the seed crystal rod 2 as the core. The rotation of the seed crystal rod 2 can improve the adhesion uniformity of the crystal. As the seed crystal rod 2 is pulled upward, it becomes a columnar laser crystal. When a certain temperature is reached, part of the substances in the laser crystal raw material volatilizes, and the volatile substances flow upward and contact the collecting cover 11 and condense on the inner wall of the collecting cover 11. The pulling component drives the high-temperature scraper component 12 to move synchronously to scrape off the volatile substances attached to the collecting cover 11. A heating device is provided in the high-temperature scraper component 12 to keep the contact surface of the scraper at a high temperature, so that the volatile substances are quickly melted while in contact with the scraper, thereby reducing the difficulty of cleaning the volatile substances. The melted volatile substances after scraping off enter the reflux pipe 13 and reflux into the laser crystal raw material in the crucible 1.

[0048] Through the above structural design, a gallate laser crystal preparation device is provided, in which a high-temperature scraper assembly 12 is used to scrape off the volatiles attached to the collection cover 11, so that the volatiles are in a molten state when in contact with the high-temperature scraper assembly 12, thereby reducing the difficulty of cleaning the volatiles. At the same time, a reflux pipe 13 is provided to guide the molten volatiles so that they flow back from the edge into the laser crystal raw material in the crucible 1, thereby reducing the change in crystal quality caused by the volatilization of substances in the crystal raw material composition during the laser crystal preparation process, maintaining the stability of the content of volatile substances such as gallium during the growth of the laser crystal, and improving the quality of the prepared laser crystal.

[0049] Embodiment 2:

[0050] like Figure 1 As shown, based on the above-mentioned embodiment 1, the collecting cover 11 is set to be conical, and a cooling pipe is arranged in the plate body of the collecting cover 11.

[0051] The working principle and beneficial effects of the above technical solution are:

[0052] A cooling pipe is arranged in the plate body of the collecting hood 11, and the cooling pipe is connected to the refrigeration equipment to maintain the relatively low temperature state of the collecting hood 11, so that the volatile raw materials can be quickly condensed after contacting the collecting hood 11, and the capturing effect of the volatile raw materials is better; and the collecting hood 11 is arranged to be a cone with a center convex upward, which guides the uncondensed or scraped raw materials, so that they can better flow along the inner wall of the collecting hood 11 to the edge of the crucible 1, and reduce the influence on the crystallization of the central seed crystal rod 2.

[0053] Embodiment 3:

[0054] like Figure 2 , 4As shown, on the basis of the above-mentioned embodiment 1, the lifting assembly includes: a driving box 3, a spiral casing 4, a lifting rod 5 and a lifting hanger 6, the driving box 3 is connected to the top of the insulation tube 7, the output end of the driving box 3 is connected to the spiral casing 4 and drives it to rotate, the lifting rod 5 is screwed to the lower part of the spiral casing 4, and the lifting hanger 6 is connected between the lifting rod 5 and the seed crystal rod 2.

[0055] The working principle and beneficial effects of the above technical solution are:

[0056] When the lifting assembly is in use, a transmission motor and a transmission structure are arranged in the driving box 3. The output end of the driving box 3 drives the screw sleeve 4 to rotate. The lifting rod 5 and the screw sleeve 4 are threadedly transmitted, so that the lifting rod 5 moves up and down while rotating, thereby realizing the up and down driving of the seed crystal rod 2. The seed crystal rod 2 and the lifting rod 5 are fixed by the lifting hanger 6.

[0057] Embodiment 4:

[0058] like Figure 2 , 4 As shown in Figure 5, on the basis of the above-mentioned embodiment 1, the high-temperature scraper assembly 12 includes: a scraper groove 14, a scraper support plate 15, a heating plate 16 and an elastic member 17. The top of the scraper support plate 15 is connected to the screw sleeve 4, and the bottom end of the scraper support plate 15 is tilted downward and is set using the conical surface of the collecting cover 11; a plurality of elastic members 17 are evenly arranged on the top of the scraper support plate 15, and the scraper groove 14 is connected to the top of the elastic member 17; the heating plate 16 is connected above the scraper support plate 15 for heating the bottom of the scraper groove 14.

[0059] A scraper 18 is connected to the center of the scraper groove 14 . The height of the scraper 18 is higher than that of the scraper groove 14 . The scraper 18 contacts the inner wall of the collection cover 11 .

[0060] The working principle and beneficial effects of the above technical solution are:

[0061] When the high-temperature scraper assembly 12 is in use, the scraper support plate 15 provides support for the scraper 18 above. The scraper support plate 15 is connected to the spiral sleeve 4, so that the scraper 18 can rotate synchronously with the spiral sleeve 4. When the scraper 18 contacts the volatiles on the inner wall of the collection cover 11, on the one hand, it is scraped off from the collection cover 11 by the thrust of the scraper 18, and on the other hand, the heating plate 16 is energized, and the heat generated heats the scraper 18, so that the scraper 18 re-melts the volatiles while contacting them, and the melted volatiles fall into the scraper groove 14 and flow downward along the scraper groove 14. The height of the scraper 18 is higher than the height of the scraper groove 14, which does not hinder the scraper 18 from scraping off the volatiles, and at the same time allows the volatiles to flow into the scraper groove 14. Through the above structural design, the scraper 18 and the spiral sleeve 4 are synchronously moved, so that the volatile recovery process is carried out synchronously; the heating plate 16 is used to heat the scraper 18 and maintain a high temperature state, so that the crystal raw material in contact with it is melted to facilitate scraping; the scraper groove 14 is used to collect and guide the melted volatiles to the edge of the crucible 1, so as to prevent the volatiles from falling into the center of the crucible 1 and affecting the crystallization on the seed rod 2.

[0062] Embodiment 5:

[0063] like Figure 2-5 As shown, on the basis of the above-mentioned embodiment 4, a collecting pipe 19 is hingedly connected to the bottom end of the scraper groove 14, a sealing plate 20 is movably arranged in the collecting pipe 19, a first spring 21 is connected between the bottom end of the sealing plate 20 and the bottom of the collecting pipe 19, and an electromagnetic block group 22 is correspondingly connected to the bottom end of the sealing plate 20 and the bottom of the collecting pipe 19, and the electromagnetic block group 22 generates a repulsive force when energized;

[0064] A hydraulic strut 23 is hinged at the side end of the scraper support plate 15, and the output end of the hydraulic strut 23 is connected to the bottom end of the collecting pipe 19. An in-position detection sensor is provided on the collecting pipe 19. When the collecting pipe 19 corresponds to the position of the return pipe 13, the hydraulic strut 23 is started to be retracted, and the cross-section of the return pipe 13 is set to be an arc.

[0065] The working principle and beneficial effects of the above technical solution are:

[0066] A collecting pipe 19 is arranged at the bottom of the scraper trough 14, and the volatiles melted on the scraper trough 14 flow downward into the collecting pipe 19. As the spiral sleeve 4 rotates, the scraper trough 14 drives the collecting pipe 19 below to rotate synchronously. When the collecting pipe 19 rotates to the position of the reflux pipe 13, the hydraulic support rod 23 is started to retract its rod part, so that the collecting pipe 19 is tilted; at the same time, the electromagnetic block group 22 is energized to generate a repulsive force, and the sealing plate 20 slides outward along the inner wall of the collecting pipe 19 under the action of the magnetic force, pushing out the volatiles melted in the collecting pipe 19 and flowing them into the reflux pipe 13. The reflux pipe 13 is arranged in an arc shape to reserve sufficient nozzle space for the outflow of volatile substances; by arranging the reflux pipe 13, the molten volatile substances can reflux through the edge of the crucible 1, and the space inside the reflux pipe 13 is limited, and is less affected by the high-temperature airflow, which effectively solves the problem that when the molten volatile substances directly fall into the crucible 1, they are easily volatilized again in a large range of the upper space of the crucible 1 due to the influence of the high-temperature airflow, thereby ensuring the stable reflux of the volatile substances and reducing the influence of the loss of volatile substances on the components in the prepared crystals.

[0067] Embodiment 6:

[0068] like Figure 1 , 6 As shown, based on the above embodiment 1, the gallate laser crystal preparation device further includes: a second reflux component, the second reflux component includes:

[0069] A slip ring 31, which is connected to the front and rear sides of the inner wall of the crucible 1 through a bracket. A slide groove 32 is provided on the inner wall of the slip ring 31, and a fan blade slide 35 is slidably provided between the top wall and the bottom wall of the slide groove 32;

[0070] A follower ring 33, the follower ring 33 is connected to the outside of the screw sleeve 4;

[0071] The spoiler blades 34 , a plurality of spoiler blades 34 are evenly connected to the outer wall of the follower ring 33 , the spoiler blades 34 are connected to the fan blade slide 35 , and a plurality of arc plates 36 are connected to the spoiler blades 34 .

[0072] The working principle and beneficial effects of the above technical solution are:

[0073] When the second reflux assembly is in use, the screw sleeve 4 rotates to drive the follower ring 33 to rotate, and the multiple flow blocking blades 34 on the follower ring 33 rotate synchronously, and the flow blocking blades 34 pull the fan blade slide 35 to make a circular motion along the slide slot 32. When the flow blocking blades 34 rotate, a horizontal airflow barrier is formed, and the airflow blocks the volatiles, so that the volatiles accumulate at the bottom of the crucible 1, reducing the loss of volatiles in the laser crystal raw material of the crucible 1. The arc plate 36 is arranged on the flow blocking blade 34, and the arc plate 36 rotates with the flow blocking blade 34, which can form a more complete airflow barrier, fill the gap between adjacent flow blocking blades 34, and reduce the escape of volatiles.

[0074] Embodiment 7:

[0075] like Figure 6 , 8 As shown in Figure 9, on the basis of the above-mentioned embodiment 6, the side wall of the slide groove 32 is connected to a rack 37, and the fan blade slide 35 is set at an opening at one end close to the rack 37. The fan blade slide 35 includes: a first gear 38, a second gear 39, a return blade shaft 40 and a return blade 41. The first gear 38 is rotatably connected to the inner wall of the fan blade slide 35, and the side extends into the slide groove 32 to be meshed with the rack 37; the second gear 39 is rotatably connected to the inner wall of the fan blade slide 35, and is meshedly set on the side of the first gear 38 close to the follower ring 33. The return blade shaft 40 is connected to the center of the second gear 39 and extends vertically downward. A plurality of return blades 41 are evenly connected to the return blade shaft 40, and when the return blade 41 rotates, an airflow rotating from top to bottom is formed.

[0076] The working principle and beneficial effects of the above technical solution are:

[0077] When the fan carriage 35 rotates, the first gear 38 is meshed with the rack 37 to drive the first gear 38 to rotate, and the first gear 38 is meshed with the second gear 39 to drive the second gear 39 to rotate in the opposite direction. The second gear 39 is connected to the return blade 41 through the return blade shaft 40. As the return blade 41 rotates, a vortex is formed from top to bottom, and the volatiles near the blocking blade 34 flow downward under the drive of the airflow, and flow back into the laser crystal raw material in the crucible 1, thereby reducing the loss of volatiles and ensuring the accuracy of the laser crystal raw material composition. Through the above structural design, as the preparation process proceeds, while forming a horizontal airflow barrier, a vortex airflow is formed near the edge of the blocking blade 34. When the volatiles flow to the edge of the blocking blade 34 as the blocking blade 34 rotates, they then flow downward with the vortex airflow and flow back into the laser crystal raw material, thereby realizing the reflux of the volatiles and preventing the volatiles from accumulating around the blocking blade 34 or escaping through the gap between the slip ring 31 and the inner wall of the crucible 1.

[0078] Embodiment 8:

[0079] like Figure 6 , 7 As shown in , 10 and 11, on the basis of the above-mentioned embodiment 7, a bent rod 42 is hinged at the top end of the fan blade slide 35 and a coil spring is provided at the hinge, and the other end of the bent rod 42 is connected to the end of the baffle blade 34 through a second spring 45;

[0080] The inner wall of the follower ring 33 is evenly connected with a plurality of telescopic wedge blocks 43, and the outer wall of the screw sleeve 4 is evenly connected with a plurality of shifting blocks 44. When the screw sleeve 4 rotates forward, the shifting blocks 44 contact the side surfaces of the wedge blocks 43 to form a synchronous transmission structure; when the screw sleeve 4 rotates reversely, the shifting blocks 44 contact the inclined surfaces of the wedge blocks 43 to press the wedge blocks 43 into the inside of the follower ring 33.

[0081] The working principle and beneficial effects of the above technical solution are:

[0082] A wedge block 43 is provided on the inner side of the follower ring 33. When the screw sleeve 4 rotates forward, the plane contact between the shift block 44 and one side of the wedge block 43 drives the follower ring 33 to rotate synchronously. When the throttling blade 34 rotates, the second spring 45 pulls the bent rod 42 to rotate, and at the same time, the coil spring is energy-stored. After rotating by a preset angle, the fan blade slide 35 is pulled to slide along the slide groove 32; when the screw sleeve 4 stops rotating, the fan blade slide 35 stops moving. Under the action of the coil spring, the bent rod 42 rotates in the opposite direction, and the second spring 45 pulls the throttling blade 34 to rotate in the opposite direction slightly, and the follower ring 33 rotates in the opposite direction slightly accordingly. The inclined surface of the wedge block 43 on the inner wall of the follower ring 33 contacts the shift block 44 and is squeezed into the follower ring 33, and the screw sleeve 4 does not rotate accordingly.

[0083] Through the above-mentioned structural design, the reverse rotation of the follower ring 33 and the baffle blade 34 is effectively achieved after the device is paused or shut down. Through a small reversal, the volatiles attached to the follower ring 33 and the baffle blade 34 are separated from them under the action of inertia, which has the effect of shaking off the volatiles, thereby achieving the reflux of the volatiles. At the same time, the spiral sleeve 4 will not flip over, reducing the impact on the driving components.

[0084] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0085] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0086] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A gallate laser crystal preparation device, characterized in that: include: A crucible (1), a lifting assembly and a first reflux assembly, wherein the crucible (1) contains melted laser crystal raw material, the lifting assembly is arranged at the center of the crucible (1), the lifting assembly drives the seed crystal rod (2) to move upward while rotating, and the bottom end of the seed crystal rod (2) extends into the melted laser crystal raw material; the first reflux assembly comprises a collecting hood (11), a high-temperature scraper assembly (12) and a reflux pipe (13), the collecting hood (11) is connected to the top of the crucible (1) and is used to collect condensed volatile substances, the high-temperature scraper assembly (12) is connected to the lifting assembly and is used to melt the volatile substances on the inner wall of the collecting hood (11) and then scrape them off, and the reflux pipe (13) is arranged on one side of the crucible (1) and is used to guide the scraped molten volatile substances into the laser crystal raw material at the bottom of the crucible (1); A heat preservation cylinder (7) is arranged outside the crucible (1) and the collecting cover (11); The lifting assembly comprises: a driving box (3), a screw sleeve (4), a lifting rod (5) and a lifting hanger (6); the driving box (3) is connected to the top of the heat preservation tube (7); the output end of the driving box (3) is connected to the screw sleeve (4) and drives it to rotate; the lifting rod (5) is screwed to the lower part of the screw sleeve (4); and the lifting hanger (6) is connected between the lifting rod (5) and the seed crystal rod (2); The high-temperature scraper assembly (12) comprises: a scraper groove (14), a scraper support plate (15), a heating plate (16) and an elastic member (17); the top end of the scraper support plate (15) is connected to the screw sleeve (4); the bottom end of the scraper support plate (15) is tilted downward and is arranged using the conical surface of the collection cover (11); a plurality of elastic members (17) are evenly arranged on the top end of the scraper support plate (15); the scraper groove (14) is connected to the top end of the elastic member (17); the heating plate (16) is connected to the top of the scraper support plate (15) and is used to heat the bottom of the scraper groove (14); A scraper (18) is connected to the center of the scraper groove (14), the height of the scraper (18) is higher than the height of the scraper groove (14), and the scraper (18) is in contact with the inner wall of the collection cover (11); A collecting tube (19) is hingedly connected to the bottom end of the scraper trough (14), a sealing plate (20) is movably arranged in the collecting tube (19), a first spring (21) is connected between the bottom end of the sealing plate (20) and the bottom of the collecting tube (19), an electromagnetic block group (22) is correspondingly connected to the bottom end of the sealing plate (20) and the bottom of the collecting tube (19), and a repulsive force is generated when the electromagnetic block group (22) is energized; A hydraulic support rod (23) is hingedly connected to the side end of the scraper support plate (15), and the output end of the hydraulic support rod (23) is connected to the bottom end of the collection pipe (19). The collection pipe (19) is provided with an in-position detection sensor. When the positions of the collection pipe (19) and the return pipe (13) correspond, the hydraulic support rod (23) is started to be retracted, and the cross section of the return pipe (13) is set to be an arc.

2. The gallate laser crystal preparation device according to claim 1, characterized in that: The collecting hood (11) is arranged in a cone shape, and a cooling pipe is arranged in the plate body of the collecting hood (11).

3. The gallate laser crystal preparation device according to claim 1, characterized in that: Also includes: A second reflux component, the second reflux component comprising: A slip ring (31), the slip ring (31) is connected to the front and rear sides of the inner wall of the crucible (1) through a bracket, a slide groove (32) is provided on the inner wall of the slip ring (31), and a fan blade slide frame (35) is slidably arranged between the top wall and the bottom wall of the slide groove (32); A follower ring (33), the follower ring (33) is connected to the outside of the screw sleeve (4); The choke blades (34) are evenly connected to the outer wall of the follower ring (33), the choke blades (34) are connected to the fan blade slide (35), and the choke blades (34) are connected to a plurality of arc plates (36).

4. The gallate laser crystal preparation device according to claim 3, characterized in that: The side wall of the slide groove (32) is connected with a rack (37); the fan blade slide (35) is opened at one end close to the rack (37); the fan blade slide (35) comprises: a first gear (38), a second gear (39), a return blade shaft (40) and a return blade (41); the first gear (38) is rotatably connected to the inner wall of the fan blade slide (35), and the side surface extends into the slide groove (32) and is meshed with the rack (37); the second gear (39) is rotatably connected to the inner wall of the fan blade slide (35), and is meshed with a side of the first gear (38) close to the follower ring (33); the return blade shaft (40) is connected to the center of the second gear (39) and extends vertically downward; a plurality of return blades (41) are evenly connected to the return blade shaft (40), and when the return blade (41) rotates, an airflow rotating from top to bottom is formed.

5. The gallate laser crystal preparation device according to claim 4, characterized in that: A bent rod (42) is hingedly connected to the top end of the fan blade slide (35), and a coil spring is arranged at the hinge; the other end of the bent rod (42) is connected to the end of the flow-blocking blade (34) via a second spring (45); The inner wall of the follower ring (33) is evenly connected with a plurality of telescopically arranged wedge blocks (43), and the outer wall of the screw sleeve (4) is evenly connected with a plurality of shifting blocks (44). When the screw sleeve (4) rotates forward, the shifting blocks (44) contact the side surfaces of the wedge blocks (43) to form a synchronous transmission structure; when the screw sleeve (4) rotates reversely, the shifting blocks (44) contact the inclined surfaces of the wedge blocks (43) to press the wedge blocks (43) into the interior of the follower ring (33).

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