Quartz ingot production device and doping method

Abstract

The present application provides a quartz ingot production device and doping method, including: a closed dopant container, at least one dopant container, used to contain a solution composed of quartz doping elements; a gas input pipe, one end of which is connected to the dopant container and the other end of which is provided with a clean compressed air inlet; a gas flow control valve is provided on the gas input pipe to control the amount of clean compressed air entering the dopant container, thereby adjusting the amount of dopant outflow from the dopant container; a dopant output pipe, one end of which is connected to the dopant container and the other end of which is located on one side of a vertically arranged basic quartz tube; a feed pipe for feeding quartz powder, the outlet of which is aligned with the dopant output pipe; a flame generating device, which is arranged at the output end of the dopant output pipe, and heat-melts the dopant and quartz powder and deposits them on the outer wall of the basic quartz tube. The operation process is easy to control, the doping is uniform, and the raw materials are not easily contaminated.

Description

Technical Field

[0001] The present application belongs to the field of production and manufacturing of doped quartz tubes and rods, and specifically relates to a natural quartz ingot production device and a doping method. Background Art

[0002] At present, the doping method of quartz products is: first, the dopant is configured into a solution of corresponding volume, and then the solution is sprinkled on the surface of the quartz powder. Then, it is fully stirred by a stirring device so that the solution is coated on the surface of the quartz powder. Then, the quartz powder coated with the dopant is dried, and finally, the doped quartz powder is dissolved into a quartz ingot.

[0003] This doping method has problems. The powder doping process is not easy to control and is prone to uneven doping. Impurities are introduced during the stirring, drying and cooling processes, causing the raw materials to be contaminated. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide a quartz ingot production device and a doping method.

[0005] In order to achieve the above purpose, the embodiment of the present application adopts the following technical solution:

[0006] In the first aspect, a quartz ingot production device includes: a closed dopant container, at least one of the dopant containers, for containing a solution composed of quartz doping elements; a gas input pipe, one end of which is connected to the dopant container and the other end of which is provided with a clean compressed air inlet; a gas flow control valve is provided on the gas input pipe for controlling the amount of clean compressed air entering the dopant container, thereby adjusting the amount of dopant outflow from the dopant container; a dopant output pipe, one end of which is connected to the dopant container and the other end of which is located on one side of a vertically arranged base quartz tube; a feed pipe for feeding quartz powder, the outlet of which is aligned with the dopant output pipe; a flame generating device is provided at the output end of the dopant output pipe to heat-melt the dopant and quartz powder and then precipitate them on the outer wall of the base quartz tube.

[0007] According to the technical solution provided in the embodiment of the present application, the flame generating device is located on a side of the dopant output tube relatively far away from the base quartz tube; it includes an ion head, which has a flame ejection port at one end relatively close to the dopant output tube and a compressed air inlet at one end relatively far away from the dopant output tube; the ion head is used to electrify the air and then eject flames from the flame ejection port.

[0008] According to the technical solution provided in the embodiment of the present application, the gas input pipe and the dopant container are detachably connected, and the dopant output pipe and the dopant container are detachably connected.

[0009] According to the technical solution provided in the embodiment of the present application, there are multiple dopant containers, each of which is connected to a gas input pipe, and the dopant output pipe is connected to multiple dopant containers respectively.

[0010] According to the technical solution provided in the embodiment of the present application, it also includes a cleaning device for cleaning the dopant output tube from bottom to bottom, and the cleaning device includes a cleaning brush; the cleaning brush is provided with a brush head, a wiping dry part and a drying part in sequence along its length direction from the bottom end; a cleaning cavity is provided in the middle of the cleaning brush, and a water spray hole is opened on the bottom side wall of the cleaning cavity; a drying cavity is also provided in the cleaning brush, which is arranged around the cleaning cavity, and a gas jet hole is provided on the side wall of the cleaning brush corresponding to the drying part; the wiping dry part is formed by a water-absorbing cotton fixedly sleeved on the outside of the cleaning brush.

[0011] According to the technical solution provided in the embodiment of the present application, the end of the cleaning brush is sealed and connected with an end cover, and the middle of the end cover is connected with a cleaning water pipe connected to the cleaning chamber; the end cover is also connected with a drying air pipe connected to the drying chamber.

[0012] According to the technical solution provided in the embodiment of the present application, the cleaning brush is rotatably connected to the end cover; the cleaning device also includes a first driving mechanism for driving the cleaning brush to rotate, and a second driving mechanism for driving the end cover and the cleaning brush connected thereto to move along the length direction of the cleaning brush.

[0013] According to the technical solution provided in the embodiment of the present application, the first driving mechanism includes: a first motor; a driving wheel connected to the output shaft of the first motor; a belt, sleeved with the driving wheel; a pulley, whose outer wall is sleeved with the belt and whose inner wall is sleeved with the outer wall of the cleaning device; the first motor, the driving wheel, the belt and the pulley are supported and positioned by a support assembly; the first motor starts to drive the driving wheel to rotate, and the driving wheel drives the pulley (774) through the belt to drive the entire cleaning device to rotate.

[0014] According to the technical solution provided in the embodiment of the present application, the second driving mechanism includes: a second motor; a sleeve, fixedly connected to the output shaft of the second motor; a screw, one end of which extends into the interior of the sleeve and is threadedly sleeved with the sleeve, and the other end of which is rotatably engaged with the end cover; when the second motor is started, it drives the sleeve to rotate, and the screw moves up and down, thereby pushing the end cover to move up and down.

[0015] In the second aspect, a quartz ingot doping method includes the quartz ingot production device described above, characterized in that it includes the following steps: configuring the doping element into a solution and placing it in a dopant container; opening the gas flow control valve, allowing clean compressed air to enter the dopant container through the gas input pipe to push the dopant into the dopant output pipe, and controlling the doping concentration by adjusting the gas flow control valve.

[0016] This application has the following beneficial effects:

[0017] The present application provides a quartz ingot production device. Compared with the existing stirring, drying and mixing method, the device places a prepared dopant solution into a dopant container, and introduces clean compressed air into the dopant container to push the dopant to be output through a dopant output tube. The positional relationship among a flame generating device, a dopant output tube, a quartz powder feed tube and a base quartz tube is arranged so that the compressed air is ionized by an ion head to generate a flame that will just deposit the dopant flowing out of the dopant output tube and the quartz powder falling from the quartz powder feed tube onto a quartz tube rod layer by layer to form a quartz ingot, thereby improving the uniformity of doping, preventing raw materials from being easily contaminated, and controlling the doping concentration through a gas flow regulating valve of clean compressed air, thereby making the control convenient and easy.

[0018] The present application also provides a quartz ingot doping method. Compared with the existing stirring and drying doping method, the method adopts a plasma flame to melt the dopant and quartz powder, and adjusts the flow rate of compressed air to adjust the dopant concentration. It is easy to control, the raw materials are not easily contaminated, and the cost of the doping material preparation process is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0020] Figure 1 and Figure 2 This is a schematic diagram of the structure of the doping device described in this application;

[0021] Figure 3 and Figure 4 This is a schematic diagram of the structure of the dopant output tube described in this application;

[0022] Figure 5 This is a schematic diagram of the structure of the cleaning device described in this application;

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of the second cleaning pipe section described in this application;

[0024] Figure 7 This is a schematic diagram of the cross-sectional structure of the first cleaning pipe section described in this application.

[0025] Description of reference numerals:

[0026] 1. Dopant container;

[0027] 2. Gas input pipe; 21. Clean compressed air inlet; 22. Gas flow control valve;

[0028] 3. Dopant output pipe; 31. One-way valve; 32. Flow meter;

[0029] 4. Feeding pipe;

[0030] 5. Flame generating device; 51. Ion head; 52. Flame ejection port; 53. Compressed air inlet; 54. Inductor coil;

[0031] 6. Basic quartz tube; 61. Doped quartz;

[0032] 7. Cleaning device;

[0033] 71, cleaning brush; 711, brush head; 712, wipe dry part; 713, drying part;

[0034] 72. cleaning chamber; 721. water spray hole;

[0035] 73. Drying chamber; 731. Jet hole;

[0036] 74. End cover; 75. Cleaning water pipe; 76. Drying air pipe;

[0037] 771, first motor; 772, driving wheel; 773, belt; 774, pulley;

[0038] 781. Second motor; 782. Sleeve; 783. Screw. DETAILED DESCRIPTION

[0039] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant application, rather than to limit the application. It is also necessary to explain that, for ease of description, only the parts related to the application are shown in the accompanying drawings.

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] Embodiment 1

[0042] A quartz ingot production device comprises: a closed dopant container 1, at least one of which is used to contain a solution composed of quartz doping elements; a gas input pipe 2, one end of which is connected to the dopant container 1 and the other end of which is provided with a clean compressed air inlet 21; a gas flow control valve 22 is provided on the gas input pipe 2 for controlling the amount of clean compressed air entering the dopant container 1, thereby adjusting the outflow of dopant from the dopant container 1; a dopant output pipe 3, one end of which is connected to the dopant container 1 and the other end of which is located on one side of a vertically arranged basic quartz tube 6; a feeding pipe 4 for feeding quartz powder, the outlet of which is aligned with the dopant output pipe 3; a flame generating device 5, which is arranged at the output end of the dopant output pipe 3 and precipitates the dopant and quartz powder on the outer wall of the basic quartz tube 6 after hot melting.

[0043] Specifically, please refer to Figure 1 and Figure 2 As shown, the required doping elements are configured into a solution and placed in a doping agent container 1 for standby use. There are one or more doping agent containers 1, which are convenient for doping different doping elements simultaneously or separately. The gas input pipe 2 and the doping agent output pipe 3 are inserted into the doping agent container, so that the doping agent container is sealed, and clean compressed air enters the doping agent container containing the doping elements from the clean compressed air inlet 21. The doping process is not easily contaminated. The amount of clean compressed air entering is controlled by the gas flow control valve 22, and then the outflow of the doping agent container can be controlled. The base quartz tube can rotate axially, and the quartz ingot is deposited on the outer wall of the base quartz tube 6 and gradually grows in the radial direction to form a quartz ingot. The present application arranges the positions of the flame generating device, the dopant output tube, the quartz powder feeding tube, and the base quartz tube so that the flame generated by the compressed air passing through the flame generating device just deposits the dopant flowing out of the dopant output tube and the quartz powder falling from the quartz powder feeding tube layer by layer onto the base quartz tube to form a quartz ingot, thereby improving the uniformity of doping. Since the doping process of the present device is not completed by stirring, the raw materials are not easily contaminated, and the doping concentration can be controlled by the gas flow regulating valve of the clean compressed air, and the control is convenient and easy.

[0044] It should be noted that the gas input pipe 2 and the dopant output pipe 3 shown in the drawings of the present application are located below the dopant container 1, and in actual use, the gas input pipe 2 and the dopant output pipe 3 are both located above the dopant container 1. The gas input pipe 2 and the dopant output pipe 3 may both be located on one side of the dopant container 1, or on different sides of the dopant container 1.

[0045] Furthermore, the flame generating device 5 is located on a side of the dopant output tube 3 relatively far away from the base quartz tube 6; it includes an ion head 51, and the ion head 51 is provided with a flame outlet 52 at one end relatively close to the dopant output tube 3 and a compressed air inlet 53 at one end relatively far away from the dopant output tube 3; the ion head 51 is used to electrify the air and then spray the flame out of the flame outlet 52.

[0046] Specifically, an inductance coil 54 is wound around the ion head 51 , and the ion head is electrified through the inductance coil 54 to ionize the compressed air and generate flames, which is safe, simple and effective.

[0047] Furthermore, the gas input pipe 2 and the dopant container 1 are detachably connected, and the dopant output pipe 3 and the dopant container 1 are detachably connected.

[0048] Specifically, the gas input pipe 2 and the dopant output pipe 3 are both detachably connected to the dopant container 1, so that the gas input pipe 2 and the dopant output pipe 3 can be easily removed. At the same time, the dopant container 1 can be cleaned after being removed, which is convenient and simple to clean. At the same time, the dopant container 1 filled with doping elements can be directly installed after removal, which saves working time and improves working efficiency.

[0049] Furthermore, there are multiple dopant containers 1 , each of which is connected to a gas input pipe 2 , and the dopant output pipe 3 is connected to multiple dopant containers 101 , respectively.

[0050] Specifically, please refer to Figure 3 and Figure 4 As shown, multiple dopant containers facilitate simultaneous doping with different doping elements.

[0051] A one-way valve 31 is provided on the pipeline connecting each dopant container 1 and the dopant output pipe 3. The doping process of the dopant container can be controlled directly by controlling the one-way valve 31, for example, only one dopant container is allowed to be connected to the dopant output pipe, any two or three are allowed to be connected to the dopant output pipe at the same time, or different dopant containers are opened during different quartz ingot production processes, which is simple and convenient to operate.

[0052] A flow meter 32 is also provided on the pipeline connecting each dopant container 1 and the dopant output pipe 3 to count the dopant output and accurately grasp the doping concentration.

[0053] Furthermore, the device also includes a cleaning device 7 for cleaning the dopant output tube 3 from bottom to bottom, and the cleaning device 7 includes a cleaning brush 71; the cleaning brush 71 is provided with a brush head 711, a wiping portion 712 and a drying portion 713 in sequence from the bottom along its length direction; a cleaning cavity 72 is provided in the middle of the cleaning brush 71, and a water spray hole 721 is opened on the bottom side wall of the cleaning cavity 72; a drying cavity 73 is also provided in the cleaning brush 71, which is arranged around the cleaning cavity 72, and a jet hole 731 is provided on the side wall of the cleaning brush 71 corresponding to the drying portion 713; the wiping portion 712 is formed by a water-absorbing cotton fixedly sleeved on the outside of the cleaning brush 71.

[0054] It can be understood here that when the dopant output pipe is connected to multiple dopant containers, the types of doping elements contained in the dopant containers are generally fixed. Therefore, the parts connected to multiple dopant containers do not need to be cleaned. However, the main pipeline is mixed with multiple doping elements. During the generation process of a new quartz ingot, the elements remaining in the main pipeline will affect the doping concentration of the quartz ingot to be generated. Therefore, only the merged main pipeline part needs to be cleaned.

[0055] Please refer to Figure 5-Figure 7 As shown, the cleaning brush described in the present application is provided with a brush head 711, a wiping stem 712 and a drying stem 713 to perform all-round cleaning of the dopant output tube 3 by water washing, wiping and drying. The water spray hole 721 sprays water to assist the brush head 711 to clean the tube wall, and the wiping stem 712 wipes the water droplets on the tube wall of the dopant output tube. The drying gas flows out from the air jet hole 731, and the auxiliary drying portion 713 dries the dopant output tube to improve the cleaning efficiency. After drying, it can be directly put into use. The cleaning device is put into use after cleaning, which reduces the probability of contamination during the doping process and improves the quality of the product.

[0056] Furthermore, the end of the cleaning brush 71 is sealedly connected to an end cover 74 , and a cleaning water pipe 75 communicating with the cleaning chamber 72 is connected to the middle of the end cover 74 ; the end cover 74 is also connected to a drying air pipe 76 communicating with the drying chamber 73 .

[0057] Specifically, the cleaning chamber 72 is connected to the cleaning water pipe 75, and water flows into the cleaning chamber 72 from the cleaning water pipe 75 and then flows out through the water spray hole 721. The drying air pipe 76 is connected to the drying chamber 73, and the drying gas flows out from the drying air pipe 76.

[0058] Furthermore, the cleaning brush 71 is rotatably connected to the end cover 74; the cleaning device 7 also includes a first driving mechanism for driving the cleaning brush 71 to rotate, and a second driving mechanism for driving the end cover 74 and the cleaning brush 71 connected thereto to move along the length direction of the cleaning brush 71.

[0059] Specifically, the cleaning brush 71 is detachably connected to the cleaning device 7, and the cleaning brush 71 of the cleaning device described in the present application extends into the main pipe part of the dopant output pipe and is detachably connected to the main pipe part. When the cleaning brush 71 moves from top to bottom and extends out of the dopant output pipe, the cleaning brush 71 part can be detached.

[0060] The cleaning brush 71 is rotatably connected to the end cover 74 . The end cover 74 remains stationary during the rotation of the cleaning brush 71 , and will not affect the cleaning water pipe 75 and the drying air pipe 76 .

[0061] Driven by the first driving mechanism and the second driving mechanism, the cleaning brush rotates and moves downward to clean the dopant output tube 3. The cleaning effect is good and convenient. After the cleaning is completed, the cleaning brush 71 is fully extended from the bottom of the dopant output tube 3, the cleaning brush is separated and removed, and the remaining part can be removed from the top of the dopant output tube. The operation is simple and convenient.

[0062] Furthermore, the first driving mechanism includes: a first motor 771; a driving wheel 772, connected to the output shaft of the first motor 771; a belt 773, sleeved with the driving wheel 772; a pulley 774, whose outer wall is sleeved with the belt 773 and whose inner wall is sleeved with the outer wall of the cleaning device 7; the first motor 771, the driving wheel 772, the belt 773 and the pulley 774 are supported and positioned by a supporting assembly; the first motor 771 is started to drive the driving wheel 772 to rotate, and the driving wheel 772 drives the pulley 774 through the belt 773 and then drives the entire cleaning device 7 to rotate.

[0063] Specifically, the pulley 774 is an annular structure, and its inner wall is in contact with the outer wall of the cleaning device 7. The outer wall of the pulley 774 is sleeved with a belt 773, and the belt 773 is also sleeved on the driving wheel 772. When the first motor 771 is started, the output shaft rotates to drive the driving wheel 771 and then drives the pulley 774 to rotate, and relies on static friction to drive the cleaning device 7 to rotate, thereby realizing the rotation of the cleaning device 7. No manual cleaning is required, which saves time and effort and cleans more thoroughly.

[0064] The support assembly is a support platform for fixing the first motor 771, the driving wheel 772 and the pulley 774 of the first driving mechanism.

[0065] Furthermore, the second driving mechanism includes: a second motor 781; a sleeve 782, which is fixedly connected to the output shaft of the second motor 781; a screw 783, one end of which extends into the interior of the sleeve 782 and is threadedly engaged with the sleeve 782, and the other end of which is rotatably engaged with the end cover 74; when the second motor 781 is started, it drives the sleeve 782 to rotate, and the screw 783 moves up and down, thereby pushing the end cover 74 to move up and down.

[0066] Specifically, after the second motor 781 is started, the output shaft rotates to drive the sleeve 782 to rotate. The sleeve 782 is provided with an internal thread, and the screw 783 is provided with an external thread matched with the internal thread. During the rotation of the sleeve 782, the screw 783 moves up and down, thereby driving the end cover to move up and down. Since the screw 783 and the end cover 74 are rotatably connected, the rotation of the screw 783 will not drive the end cover 74 to rotate. The rise and fall of the screw 783 drives the cleaning device to move up and down to achieve cleaning from top to bottom. No manual control is required, saving time and effort.

[0067] Embodiment 2

[0068] A quartz ingot doping method includes the quartz ingot production device described above, and includes the following steps: configuring the doping element into a solution and placing it in a dopant container; opening the gas flow control valve, allowing clean compressed air to enter the dopant container through a gas input pipe to push the dopant into a dopant output pipe, and controlling the doping concentration by adjusting the gas flow control valve.

[0069] Specifically, the dopant flows out from the dopant output tube. At the same time, the discharge amount of the quartz powder bin is set so that the quartz powder flows into the discharge tube for continuous discharge; the flame generating device generates a plasma flame; the base quartz tube rotates, and the plasma flame deposits the dopant and the quartz powder layer by layer onto the base quartz tube to form a quartz ingot of target diameter.

[0070] Compared with the existing stirring and drying doping method, the method of using plasma flame to melt the dopant and quartz powder and adjusting the flow rate of compressed air to adjust the dopant concentration is easy to control, the raw materials are not easily contaminated, and the cost of the doping material preparation process is reduced.

[0071] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of application involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the application. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) to form a technical solution.

Claims

1. A quartz ingot production device, characterized in that: include: A closed dopant container (1), at least one of which is used to contain a solution composed of quartz doping elements; a gas input pipe (2), one end of which is in communication with the dopant container (1), and the other end of which is provided with a clean compressed air inlet (21); a gas flow control valve (22) is provided on the gas input pipe (2) for controlling the amount of clean compressed air entering the dopant container (1), thereby adjusting the amount of dopant flowing out of the dopant container (1); A dopant output tube (3), one end of which is connected to the dopant container (1), and the other end of which is located on one side of a vertically arranged base quartz tube (6); A feeding pipe (4) for feeding quartz powder, the outlet of which is aligned with the dopant output pipe (3); A flame generating device (5) is arranged at the output end of the dopant output tube (3) to melt the dopant and quartz powder and then precipitate them on the outer wall of the base quartz tube (6); The invention also comprises a cleaning device (7) for cleaning the dopant output tube (3) from bottom to bottom, the cleaning device (7) comprising a cleaning brush (71); the cleaning brush (71) is provided with a brush head (711), a wiping portion (712) and a drying portion (713) in sequence from the bottom end along the length direction thereof; a cleaning cavity (72) is provided in the middle of the cleaning brush (71), and a water spray hole (721) is provided on the bottom side wall of the cleaning cavity (72); a drying cavity (73) is also provided inside the cleaning brush (71) and is arranged around the cleaning cavity (72), and a water spray hole (731) is provided on the side wall of the cleaning brush (71) corresponding to the drying portion (713); the wiping portion (712) is formed by a water-absorbing cotton fixedly sleeved on the outside of the cleaning brush (71); the cleaning brush (71) is detachably connected to the cleaning device (7).

2. A quartz ingot production device according to claim 1, characterized in that: The flame generating device (5) is located on a side of the dopant output tube (3) relatively far from the base quartz tube (6); the flame generating device (5) comprises an ion head (51); an end of the ion head (51) relatively close to the dopant output tube (3) is provided with a flame ejection port (52), and an end relatively far from the dopant output tube (3) is provided with a compressed air inlet (53); the ion head (51) is used to electrically charge air and eject flames from the flame ejection port (52).

3. A quartz ingot production device according to claim 1, characterized in that: The gas input pipe (2) and the dopant container (1) are detachably connected, and the dopant output pipe (3) and the dopant container (1) are detachably connected.

4. A quartz ingot production device according to claim 1, characterized in that: There are a plurality of dopant containers (1), each of which is connected to a gas input pipe (2), and the dopant output pipe (3) is connected to each of the plurality of dopant containers (1).

5. A quartz ingot production device according to claim 1, characterized in that: The end of the cleaning brush (71) is sealedly connected to an end cover (74), and the middle of the end cover (74) is connected to a cleaning water pipe (75) communicating with the cleaning chamber (72); the end cover (74) is also connected to a drying air pipe (76) communicating with the drying chamber (73).

6. A quartz ingot production device according to claim 5, characterized in that: The cleaning brush (71) is rotatably connected to the end cover (74); the cleaning device (7) further comprises a first driving mechanism for driving the cleaning brush (71) to rotate, and a second driving mechanism for driving the end cover (74) and the cleaning brush (71) connected thereto to move along the length direction of the cleaning brush (71).

7. A quartz ingot production device according to claim 6, characterized in that: The first driving mechanism comprises: First motor (771); A driving wheel (772) connected to the output shaft of the first motor (771); A belt (773) sleeved on the driving wheel (772); A pulley (774), the outer wall of which is sleeved with the belt (773), and the inner wall of which is sleeved with the outer wall of the cleaning device (7); The first motor (771), the driving wheel (772), the belt (773) and the pulley (774) are supported and positioned by a support assembly; The first motor (771) is started to drive the driving wheel (772) to rotate, and the driving wheel (772) drives the pulley (774) through the belt (773), thereby driving the entire cleaning device (7) to rotate.

8. A quartz ingot production device according to claim 6 or 7, characterized in that: The second driving mechanism comprises: Second motor (781); A sleeve (782) fixedly connected to an output shaft of the second motor (781); A screw rod (783), one end of which extends into the interior of the sleeve (782) and is threadedly sleeved with the sleeve (782), and the other end of which is rotatably engaged with the end cover (74); When the second motor (781) is started, it drives the sleeve (782) to rotate, and the screw rod (783) moves up and down, thereby pushing the end cover (74) to move up and down.

9. A quartz ingot doping method, comprising the quartz ingot production device according to any one of claims 1 to 8, characterized in that: The steps include: The doping element is prepared into a solution and placed in a doping agent container; Open the gas flow control valve, and clean compressed air enters the dopant container through the gas input pipe to push the dopant into the dopant output pipe, and the doping concentration is controlled by adjusting the gas flow control valve.

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