A large vertical high temperature rotary furnace

Abstract

The application provides a large vertical high-temperature rotary furnace, which comprises a hot melting furnace, a heating part, a tray and a rapid cooling mechanism. The hot melting furnace comprises a furnace cover, a furnace body and a furnace bottom plate. The furnace cover is connected to one end of the furnace body, and the furnace bottom plate is configured to be away from and close to the furnace body. The heating part is located in the furnace body. The tray is rotationally arranged on the furnace bottom plate, and a rotating mechanism for driving the tray to rotate is arranged on the furnace bottom plate. The rapid cooling mechanism comprises heat exchange pipelines, a water-cooled heat exchanger and a driving part. Both ends of the heat exchange pipelines are communicated with the furnace body. The water-cooled heat exchanger is communicated with the pipe section of the heat exchange pipelines. The driving part is used for driving the airflow to circulate between the hot melting furnace and the heat exchange pipelines. The application improves the problems of uneven heating and uneven cooling of the quartz raw material in the hot melting furnace.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of quartz glass production, in particular to a large vertical high-temperature rotary furnace. BACKGROUND

[0002] Quartz glass is made of natural crystalline quartz or silicon compounds and is melted at high temperature in a clean environment, and has a series of excellent physical and chemical properties, such as good light transmission, high temperature resistance, low expansion coefficient, electrical vacuum performance, corrosion resistance and the like, and is known as 'glass king' in the industry. Quartz glass is an important basic material indispensable for the development of modern information industry, optics, photovoltaic, semiconductor and other strategic emerging industries and aerospace and other national defense fields.

[0003] At present, in the synthetic quartz glass melting and casting process technology flow, large-size high-performance synthetic quartz plate glass is usually made by melting, deforming and solidifying a large amount of small-size high-purity synthetic quartz raw materials in a high-temperature inert gas environment. If the synthetic quartz raw materials are unevenly heated and cooled during the melting, deforming and solidifying process, the internal veins of the quartz glass will be left, resulting in product scrap. SUMMARY

[0004] In order to solve the problems of uneven heating of quartz raw materials during melting and uneven cooling during glassification, the application provides a large vertical high-temperature rotary furnace.

[0005] The application provides a large vertical high-temperature rotary furnace, which adopts the following technical scheme:

[0006] A large vertical high-temperature rotary furnace comprises:

[0007] A hot melting furnace comprising a furnace cover, a furnace body and a furnace bottom plate, the furnace cover being connected to one end of the furnace body, and the furnace bottom plate being configured to be away from and close to the furnace body;

[0008] A heating element located in the furnace body;

[0009] A tray is rotationally arranged on the furnace bottom plate, and a rotating mechanism for driving the tray to rotate is arranged on the furnace bottom plate;

[0010] A rapid cooling mechanism comprising a heat exchange pipeline, a water-cooled heat exchanger and a driving element, both ends of the heat exchange pipeline being in communication with the furnace body, the water-cooled heat exchanger being in communication with the pipe section of the heat exchange pipeline, and the driving element being used to drive the circulation of airflow between the hot melting furnace and the heat exchange pipeline.

[0011] By adopting the technical scheme, the furnace bottom tray is slidingly arranged at one side of the furnace body, when the furnace bottom tray is away from the furnace body, the hot melting furnace can be opened, and the operator can place the raw material on the tray; when the furnace bottom tray is close to the furnace body until abutting against the furnace body, the hot melting furnace can be closed, the heating element is started, and the quartz raw material is heated and melted in the hot melting furnace; the tray is rotationally arranged on the furnace bottom tray, so that the raw material on the tray can be in uniform contact with the heating element, thereby improving the heating uniformity of the raw material, and reducing the production cost of the large-size synthetic quartz glass. After the quartz raw material on the tray is completely heated and melted, the driving element is started, the hot air flow in the hot melting furnace enters the heat exchange pipeline, becomes cold air flow after being cooled by the water-cooled heat exchanger, and continues to enter the hot melting furnace along the heat exchange pipeline, so that the fast cooling circulation is formed in the hot melting furnace, and at the same time, the tray continues to rotate, so that the cold air flow is in uniform contact with the melted quartz raw material, to achieve the effect of uniform cooling. The fast cooling mechanism cools and vitrifies the melted quartz raw material to obtain synthetic quartz glass.

[0012] Optionally, the stabilizing support rod further comprises a support rod and a supporting wheel rotationally arranged at one end of the support rod; the support rod is fixedly connected to the furnace bottom tray, and the supporting wheel abuts against the bottom of the tray; and / or

[0013] The lifting mechanism is used for driving the furnace body and the furnace bottom tray to move close to or away from each other.

[0014] By adopting the above technical scheme, when the tray rotates, the supporting wheel abuts against the bottom of the tray, and shares part of the axial load of the tray, so as to improve the stability of the tray during rotation; the supporting wheel is rotationally arranged on the support rod, so that the friction between the supporting wheel and the tray is rolling friction, thereby reducing the resistance caused by the rotation of the supporting wheel to the tray;

[0015] When the lifting mechanism drives the furnace bottom tray to move away from the furnace body, the hot melting furnace is opened; when the lifting mechanism drives the furnace bottom tray to move close to the furnace body, the hot melting furnace is closed.

[0016] Optionally, the rotating mechanism comprises a rotating rod rotationally connected to the furnace bottom tray and a driving assembly; one end of the rotating rod is connected to the tray, and the other end of the rotating rod penetrates through the furnace bottom tray; and the driving assembly is used for driving the rotating rod to rotate.

[0017] By adopting the above technical scheme, the driving assembly drives the rotating rod to rotate, so that the tray connected to the rotating rod rotates, thereby indirectly driving the tray to rotate.

[0018] Optionally, the driving assembly comprises a first pulley, a second pulley, a driving ring belt, and a driving source; the first pulley is fixed to one end of the rotating rod penetrating through the furnace bottom tray;

[0019] The driving source comprises an output shaft, the second pulley is fixedly arranged on the output shaft, and the driving ring is sleeved outside the first pulley and the second pulley.

[0020] By adopting the technical scheme, when the tray needs to be driven to rotate, the driving source is started to drive the second pulley to rotate, the driving ring moves under the action of the second pulley to drive the first pulley to rotate; the first pulley is fixedly connected with the rotating rod, so that the rotating rod rotates with the first pulley, and then drives the tray connected to one end of the rotating rod to rotate.

[0021] Optionally, the furnace body is provided with a heat preservation sleeve, a first heat preservation door plate is fixedly connected to one side of the furnace cover, a first air passage capable of being opened or closed is formed in the first heat preservation door plate, a second heat preservation door plate is fixedly connected to one side of the furnace bottom plate, and a second air passage capable of being opened or closed is formed in the second heat preservation door plate.

[0022] The heat preservation sleeve, the first heat preservation door plate and the second heat preservation door plate can form a heat melting cavity, and the heating element and the tray are located in the heat melting cavity.

[0023] A heat exchange layer can be formed between the outer wall of the heat melting cavity and the inner wall of the heat melting furnace, and the two ends of the heat exchange pipeline are in communication with the heat exchange layer.

[0024] By adopting the technical scheme, when the heat melting furnace is in a closed state, the heat preservation sleeve arranged in the furnace body, the first heat preservation door plate and the second heat preservation door plate on the furnace cover form a heat melting cavity, so that heat loss in the heat melting furnace can be reduced when the heat melting furnace heats raw materials; when the melted raw materials need to be cooled, the first air passage on the first heat preservation door plate and the second air passage on the second heat preservation door plate are in an open state, the heat melting cavity is in communication with the heat exchange layer, so that the communication between the quick cooling mechanism and the heat melting cavity is realized, and the quick cooling mechanism can cool the inside of the heat melting cavity.

[0025] Optionally, a first adjustable air door is slidably arranged at the first air passage, the cross section of the first adjustable air door close to one end of the tray is smaller than the cross section of the first adjustable air door away from one end of the tray, and a first adjusting element for driving the first adjustable air door to slide is arranged on the first heat preservation door plate.

[0026] A second adjustable air door is slidably arranged at the second air passage, the cross section of the second adjustable air door close to one end of the tray is smaller than the cross section of the second adjustable air door away from one end of the tray, and a second adjusting element for driving the second adjustable air door to slide is arranged on the second heat preservation door plate.

[0027] By adopting the technical scheme, the first adjustable air door is driven to slide at the first air passage by the first adjusting member, and since the cross section of the first adjustable air door close to one end of the tray is smaller than the cross section of the first adjustable air door away from the one end of the tray, if the first adjustable air door is driven to slide away from the tray, the distance between the outer side wall of the first adjustable air door and the inner side wall of the first air passage is increased to increase the gas flow rate at the first air passage, and if the first adjustable air door is driven to slide away from the tray, the distance between the outer side wall of the first adjustable air door and the inner side wall of the first air passage is reduced to reduce the gas flow rate at the first air passage, thereby realizing the adjustment of the gas flow rate at the first air passage; similarly, the second adjustable air door is driven to slide away from or close to the tray by the second adjusting member, thereby realizing the adjustment of the gas flow rate at the second air passage.

[0028] Optionally, the first adjusting member comprises a first adjusting rod, the first adjusting rod passes through the first heat preservation door plate and is threadedly connected with the first heat preservation door plate, and one end of the first adjusting rod passing through the first heat preservation door plate abuts against the first adjustable air door.

[0029] By adopting the technical scheme, the first adjusting rod is rotated to move the first adjusting rod away from the tray, and the first adjusting rod can push the first adjustable air door to move away from the tray during the movement of the first adjusting rod; when the first adjusting rod is rotated to move the first adjusting rod away from the first adjustable air door, the first adjustable air door moves close to the tray under the action of its own gravity.

[0030] Optionally, the second adjusting member comprises a second adjusting rod, the second adjusting rod passes through the second adjustable air door and the second heat preservation door plate in sequence and is threadedly connected with the second heat preservation door plate, and one end of the second adjusting rod passing through the second adjustable air door is provided with a supporting block abutting against the second adjustable air door.

[0031] By adopting the technical scheme, the supporting block on the second adjusting rod abuts against the second adjustable air door to provide support for the second adjustable air door, the second adjusting rod is rotated to move the second adjusting rod away from the tray, and the second adjustable air door moves away from the tray together with the second adjusting rod; when the second adjusting rod is rotated to move the second adjusting rod close to the tray, the second adjustable air door also moves close to the tray together with the second adjusting rod.

[0032] Optionally, a partition plate is arranged in the heat exchange interlayer, and the partition plate divides the heat exchange interlayer into an upper interlayer and a lower interlayer, one end of the heat exchange pipeline is in communication with the upper interlayer, and the other end of the heat exchange pipeline is in communication with the lower interlayer.

[0033] By adopting the technical scheme, the heat exchange interlayer is divided into an upper interlayer and a lower interlayer by the partition plate, one end of the heat exchange pipeline is in communication with the upper interlayer, and the other end of the heat exchange pipeline is in communication with the lower interlayer. When the quick cooling mechanism cools the hot melting furnace, the hot gas flow in the hot melting cavity enters the upper interlayer through the first air passage on the first heat preservation door plate, and then enters the heat exchange pipeline after passing through the upper interlayer, and is cooled and becomes cold gas flow. The cold gas flow enters the lower interlayer from the other end of the heat exchange pipeline, and then enters the hot melting cavity through the second air passage of the second heat preservation door plate, and cools and processes the melted quartz raw material, so that the quick cooling cycle is formed in the whole hot melting furnace, and the cooling effect is good.

[0034] Optionally, one end of the heat exchange pipeline close to the lower interlayer is an air outlet, and a baffle plate is arranged on one side of the air outlet and fixed to the inner side wall of the furnace body.

[0035] By adopting the technical scheme, the air flow enters the heat exchange interlayer from the air outlet after being cooled, and the baffle plate is arranged to hinder the cold gas flow from directly blowing the heat preservation sleeve, so that the heat preservation sleeve is protected.

[0036] In summary, the present application has at least one of the following beneficial effects:

[0037] 1. A rotatable tray is arranged in the hot melting furnace of the present application, the tray is rotatably arranged on the furnace bottom disc, so that the quartz raw material on the tray can be in uniform contact with the heating element, thereby improving the heating uniformity of the quartz raw material, improving the yield, and reducing the production cost of large-size synthetic quartz glass;

[0038] 2. A stabilizing support rod is arranged on the furnace bottom disc, when the tray rotates, the supporting wheel in the stabilizing support rod abuts against the bottom of the tray, thereby providing support for the tray and sharing part of the axial load, so that the stability of the tray during rotation is improved;

[0039] 3. A partition plate is arranged in the heat exchange interlayer, and the partition plate divides the heat exchange interlayer into an upper interlayer and a lower interlayer. One end of the heat exchange pipeline is in communication with the upper interlayer, and the other end of the heat exchange pipeline is in communication with the lower interlayer. When the quick cooling mechanism cools the hot melting furnace, the air flow in the hot melting furnace is not easy to exchange heat only at the ports of the two ends of the heat exchange pipeline, but forms a quick cooling cycle in the whole hot melting furnace, and has a good heat exchange effect. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a schematic diagram of the overall structure of a large vertical high-temperature rotary furnace according to an embodiment of the present application;

[0041] Figure 2 is a schematic diagram of the cross-sectional structure of a hot melting furnace according to an embodiment of the present application;

[0042] Figure 3 is Figure 2A local enlarged structure schematic view at middle A;

[0043] Figure 4 is Figure 2 A local enlarged structure schematic view at middle B;

[0044] Figure 5 is Figure 2 A local enlarged structure schematic view at middle C.

[0045] Marked as follows: 1, hot melting furnace; 11, furnace cover; 12, furnace body; 121, heat preservation sleeve; 1211, first containing groove; 1212, second containing groove; 13, furnace bottom plate; 14, stabilizing support rod; 141, support rod; 142, supporting wheel; 15, first heat preservation door plate; 151, first air passage; 152, first adjustable air door; 1521, first clamping groove; 153, first adjusting rod; 1531, top supporting block; 16, second heat preservation door plate; 161, second air passage; 162, second adjustable air door; 1621, second clamping groove; 163, second adjusting rod; 1631, supporting block; 17, hot melting cavity; 18, heat exchange interlayer; 181, upper interlayer; 182, lower interlayer; 2, graphite heater; 21, heating rod; 22, mounting strip; 23, conductive support; 24, conductive joint; 3, tray; 31, positioning bottom plate; 32, crucible; 4, rotating mechanism; 41, rotating rod; 411, supporting rod; 412, crucible rotating magnetic fluid; 413, transmission shaft; 42, driving assembly; 421, first pulley; 422, second pulley; 423, driving ring belt; 424, servo motor; 425, output shaft; 5, rapid cooling mechanism; 51, heat exchange pipeline; 511, water-cooled air inlet flange; 512, water-cooled air outlet flange; 52, water-cooled heat exchanger; 521, communication pipe; 522, cooling pipeline; 53, water-cooled vacuum air blower; 6, lifting mechanism; 61, lifting support; 7, baffle; 8, wind shield; 9, furnace stand; 10, vacuum mechanism; 101, air suction pipeline; 102, vacuum pump. DETAILED DESCRIPTION

[0046] The following will be described in detail in combination with the accompanying Figures 1-5 The application is further described in detail.

[0047] The embodiment of the application provides a large vertical high-temperature rotary furnace.

[0048] Reference Figure 1 A large vertical high-temperature rotary furnace includes a furnace stand 9 and a hot melting furnace 1 arranged on the furnace stand 9, and the hot melting furnace 1 includes a furnace cover 11, a furnace body 12 and a furnace bottom plate 13 from top to bottom in sequence. The furnace cover 11 is fixedly connected with the furnace body 12 through bolts, the furnace body 12 is fixedly connected on the furnace stand 9, and the furnace bottom plate 13 is located below the furnace body 12. In the embodiment, the furnace body 12 is specifically provided in a cylindrical shape.

[0049] Referring to Figure 1 , the furnace bottom plate 13 is provided below the lifting mechanism 6 to realize the sliding of the furnace bottom plate 13 below the furnace body 12. When the lifting mechanism 6 drives the furnace bottom plate 13 to vertically move downward, the furnace bottom plate 13 is separated from the furnace body 12, and the hot melt furnace 1 is in an open state; when the lifting mechanism 6 drives the furnace bottom plate 13 to vertically move upward until the furnace bottom plate 13 abuts against the furnace body 12, the hot melt furnace 1 is in a closed state. The moving end of the lifting mechanism 6 is fixedly connected with a lifting bracket 61 to drive the lifting bracket 61 to slide in the vertical direction. One end of the lifting bracket 61 is fixedly connected with the bearing frame to drive the furnace bottom plate 13 to move in the vertical direction.

[0050] The lifting mechanism 6 in this embodiment specifically adopts a screw rod lifting machine device, and the lifting bracket 61 can also be selected as other types of lifting devices in other embodiments.

[0051] Referring to Figure 1 and Figure 2 , the hot melt furnace 1 is provided with a heating element, which is specifically a graphite heater 2. The graphite heater 2 includes a plurality of heating rods 21 and arc-shaped mounting strips 22. The mounting strips 22 are arranged in a plurality of strips at intervals around the inner side wall of the furnace body 12. The heating rods 21 are fixedly connected to the mounting strips 22 and are distributed at equal intervals on the mounting strips 22, so that the graphite heater 2 uniformly heats the inside of the furnace body 12.

[0052] Referring to Figure 2 , in order to reduce the heat loss generated in the hot melt furnace 1, a heat preservation sleeve 121 is fixed in the furnace body 12, a first heat preservation door plate 15 is fixed in the furnace cover 11, and a second heat preservation door plate 16 is fixed in the furnace bottom plate 13; one end of the heat preservation sleeve 121 is provided with a first containing groove 1211 for clamping the first heat preservation door plate 15, and the other end is provided with a second containing groove 1212 for clamping the second heat preservation door plate 16; when the first heat preservation door plate 15 is clamped in the first containing groove 1211 and the second heat preservation door plate 16 is located in the second containing groove 1212, a hot melt cavity 17 is formed between the first heat preservation door plate 15, the heat preservation sleeve 121 and the second heat preservation door plate 16. Each heating rod 21 is located in the hot melt cavity 17. Each mounting strip 22 is fixedly connected with an electrically conductive support 23 on the side close to the furnace body 12. The electrically conductive support 23 is fixedly connected with the furnace body 12 after passing through the heat preservation sleeve 121, so as to realize the installation and fixation of the graphite heater 2 on the furnace body 12. A lead-through connector 24 is connected to the section of the electrically conductive support 23 away from the mounting strip 22. One end of the lead-through connector 24 penetrates out of the furnace body 12, so as to facilitate the communication with the external circuit. The thickness of the heat preservation sleeve 121, the first heat preservation door plate 15 and the second heat preservation door plate 16 is in the range of 160-200mm, and in this embodiment, 170mm is specifically selected.

[0053] Referring to Figure 2 and Figure 3, the heat exchange interlayer 18 is formed between the inner side wall of the hot melting furnace 1 and the outer side wall of the hot melting cavity 17, the first heat preservation door plate 15 is provided with a first air passage 151 capable of being opened or closed, and the second heat preservation door plate 16 is provided with a second air passage 161 capable of being opened or closed, so as to control the communication between the hot melting cavity 17 and the heat exchange interlayer 18. The first adjustable air door 152 is slidably arranged at the first air passage 151 of the first heat preservation door plate 15, and the first adjustable air door 152 can be clamped into the first air passage 151 in the sliding process. The cross-sectional area of the end of the first adjustable air door 152 close to the furnace cover 11 is greater than the cross-sectional area of the end of the first adjustable air door 152 away from the furnace cover 11, and in the embodiment, the first adjustable air door 152 is specifically provided in a three-layer stepped shape. In other embodiments, the first adjustable air door 152 can also be provided in a frustum shape.

[0054] Reference Figure 3 , the first heat preservation door plate 15 is provided with a first adjusting member for driving the first adjustable air door 152 to slide, and the first adjusting member is specifically provided as a first adjusting rod 153. One end of the first adjusting rod 153 penetrates through the first heat preservation door plate 15 and then penetrates into the end of the first adjustable air door 152 and is connected with a supporting block 1531. The end of the first adjustable air door 152 is provided with a first clamping groove 1521, and the supporting block 1531 is clamped in the first clamping groove 1521. The first adjusting rod 153 is threadedly connected with the first heat preservation door plate 15. When it is needed to open the first air passage 151, the first adjusting rod 153 is rotated to move towards the direction close to the furnace cover 11, and the first adjusting rod 153 pushes the first adjustable air door 152 to move upwards when the first adjusting rod 153 moves. The flow of gas at the first air passage 151 can also be controlled by adjusting the distance of the upward movement of the first adjustable air door 152 to meet different needs. In the embodiment, three first adjusting rods 153 are specifically provided on the first heat preservation door plate 15, and the three first adjusting rods 153 are uniformly distributed on the side of the first adjustable air door 152.

[0055] Reference Figure 4 , the second heat preservation door plate 16 is provided with a second adjustable air door 162 slidably arranged at the second air passage 161, and the second adjustable air door 162 can be clamped into the second air passage 161 in the sliding process. The cross-sectional area of the end of the second adjustable air door 162 close to the furnace cover 11 is greater than the cross-sectional area of the end of the second adjustable air door 162 away from the furnace cover 11, and in the embodiment, the shape of the second adjustable air door 162 is the same as that of the first adjustable air door 152.

[0056] Reference Figure 4The second adjusting member is specifically a second adjusting rod 163, one end of the second adjusting rod 163 sequentially penetrates the second heat preservation door plate 16 and the second adjustable air door 162, and the first adjusting rod 153 is threadedly connected with the first heat preservation door; one end of the second adjusting rod 163 penetrating the second adjustable air door 162 is integrally formed with a supporting block 1631, and the second adjustable air door 162 is provided with a second clamping groove 1621 for clamping the supporting block 1631. When the second air passage 161 needs to be opened, the second adjusting rod 163 is rotated to move the second adjusting rod 163 towards the furnace bottom plate 13, and when the second adjusting rod 163 moves, the second adjustable air door 162 moves downwards with the second adjusting rod 163 to open the second air passage 161. One end of the second adjusting rod 163 close to the second heat preservation door plate 16 is further threadedly connected with a fastening nut, and after the second adjusting rod 163 is rotated to slide the second adjustable air door 162 to a suitable position, the fastening nut is rotated to abut against the second heat preservation door plate 16 to prevent the position of the second adjusting rod 163 from deviating.

[0057] Similarly, the gas flow rate at the second air passage 161 can be controlled by adjusting the distance of the second adjustable air door 162 moving downwards. In the embodiment, four second adjusting rods 163 are specifically arranged on the second heat preservation door plate 16.

[0058] Reference Figure 1 and Figure 2 The heat exchange interlayer 18 is provided with annular partition plates 7, and the partition plates 7 divide the heat exchange interlayer 18 into an upper interlayer 181 and a lower interlayer 182. In the embodiment, two partition plates 7 are arranged at intervals, one partition plate 7 is fixedly connected with the inner side wall of the furnace body 12, and the other partition plate 7 is fixedly connected with the outer side wall of the furnace body 12. The heat exchange interlayer 18 is communicated with a rapid cooling mechanism 5, the rapid cooling mechanism 5 includes a heat exchange pipeline 51, a water-cooled heat exchanger 52 communicated with a pipe section of the heat exchange pipeline 51, and a driving member communicated with the heat exchange pipeline 51. One end of the heat exchange pipeline 51 is communicated with a water-cooled air inlet flange 511, the water-cooled air inlet flange 511 is communicated with the upper interlayer 181; the other end of the heat exchange pipeline 51 is communicated with a water-cooled air outlet flange 512, and one end of the water-cooled air outlet flange 512 close to the furnace body 12 is arranged as an air outlet, so that the water-cooled air outlet flange 512 is communicated with the lower interlayer 182. The water-cooled heat exchanger 52 includes a communication pipe 521 and a cooling pipeline 522 penetrating the communication pipe 521, the cooling pipeline 522 is communicated with the outside, the communication pipe 521 is connected with the pipe section of the heat exchange pipeline 51 close to the water-cooled air inlet flange 511, and the driving member is specifically a water-cooled vacuum air blower 53.

[0059] Reference Figure 1 and Figure 2When it is necessary to cool the inside of the hot melt furnace 1, the water-cooled vacuum blower 53 is started to drive the hot air flow in the hot melt chamber 17 to gradually flow along the first air outlet 151 to the water-cooled air inlet flange 511. The hot air at the water-cooled air inlet flange 511 flows into the water-cooled heat exchanger 52, so that the water-cooled heat exchanger 52 cools the hot air flow; the cold air flow obtained after cooling flows into the lower interlayer 182 along the water-cooled air outlet flange 512 at one end of the heat exchange pipe 51, and then continues to flow into the hot melt chamber 17 along the second air outlet 161, so that a cooling cycle is formed inside the hot melt furnace 1, and the inside of the hot melt furnace 1 is fully cooled.

[0060] refer to Figure 2 In order to protect the insulation sleeve 121, a windshield 8 is fixed on the side of the water-cooled air outlet flange 512 close to the insulation sleeve 121, so that the cold air flow flowing in from the water-cooled air outlet flange 512 is not easily blown directly onto the insulation sleeve 121.

[0061] refer to Figure 2 and Figure 5 To improve the uniformity of heating the quartz raw material, a rotating mechanism 4 is also provided on the furnace chassis 13. The rotating mechanism 4 includes a rotating rod 41 and a drive assembly 42. The rotating rod 41 is rotatably connected to the furnace chassis 13. A carrier is fixedly connected to the bottom of the furnace chassis 13, and the drive assembly 42 is mounted on the carrier. The tray 3 is provided at the end of the rotating rod 41 near the furnace body 12. From top to bottom, the rotating rod 41 includes a supporting rod 411, a crucible magnetic fluid 412, and a transmission shaft 413, which are interconnected. One end of the supporting rod 411 passes through the second adjustable damper 162 and is fixedly connected to the tray 3. The end of the transmission shaft 413, away from the supporting rod 411, passes through the furnace chassis 13, is installed on the carrier, and is rotatably connected to the carrier. The drive assembly 42 includes a first pulley 421, a second pulley 422, a drive belt 423, and a drive source. The drive source includes an output shaft 425, which is located on one side of the drive shaft 413 and is rotatably connected to the carrier. The first pulley 421 is coaxially fixed on the transmission shaft 413, the second pulley 422 is coaxially fixed on the output shaft 425, and the driving belt 423 is sleeved outside the first pulley 421 and the second pulley 422; the driving source is specifically set to be a servo motor 424. By starting the servo motor 424, the transmission shaft 413 can be driven to rotate, thereby driving the tray 3 to rotate.

[0062] refer to Figure 2, the tray 3 includes a positioning tray 31 and a crucible 32 clamped on the positioning tray 31, and the quartz raw material is placed in the crucible 32 when the quartz raw material is heated. In order to improve the stability of the tray 3 when rotating, a stabilizing support rod 14 is fixed on the inner side wall of the furnace tray 13; the stabilizing support rod 14 includes a support rod 141 and a supporting wheel 142 rotatably connected to one end of the support rod 141, and the support rod 141 is connected with the supporting wheel 142 after penetrating through the second heat preservation door plate 16; the axis of the supporting wheel 142 is parallel to the positioning tray 31, and the supporting wheel 142 abuts against the bottom of the positioning tray 31. When the tray 3 rotates, the stabilizing support rod 14 can share part of the axial load of the tray 3; if the support rod 411 breaks, the stabilizing support rod 14 can also hinder the tray 3 from overturning.

[0063] Reference Figure 1 In order to improve the purity of the obtained synthetic quartz glass, a vacuum mechanism 10 is further arranged on one side of the heat melting furnace 1, and the vacuum mechanism 10 includes an exhaust pipeline 101 and a vacuum pump 102 communicated with one end of the exhaust pipeline 101. When the quartz raw material in the heat melting furnace 1 is heated, the gas impurities in the heat melting furnace 1 need to be removed by the vacuum mechanism 10, so that the quartz raw material is not easy to be oxidized during the heat melting process.

[0064] The implementation principle of the large vertical high-temperature rotary furnace according to the embodiment of the present application is as follows: the lifting mechanism 6 drives the furnace tray 13 to move downward to open the heat melting furnace 1, and the quartz raw material is placed in the crucible 32 in the tray 3; the first adjusting rod 153 and the second adjusting rod 163 are sequentially rotated to make the first air passage 151 and the second air passage 161 both in the open state, and then the lifting mechanism 6 is started to move upward to close the heat melting furnace 1. The vacuum pump 102 is started to perform vacuumizing treatment on the inside of the heat melting furnace 1, and then the graphite heater 2 and the servo motor 424 are started, so that the quartz raw material on the tray 3 is heated while rotating. After the quartz raw material is completely melted, the graphite heater 2 is turned off, and the temperature in the heat melting furnace 1 is gradually reduced. When the temperature in the heat melting furnace 1 is reduced to 600℃, the quick cooling mechanism 5 is started to cool the inside of the heat melting furnace 1, so that the liquid quartz raw material in the heat melting furnace 1 is cooled and vitrified to obtain quartz glass.

[0065] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, and therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A large vertical high-temperature rotary furnace, characterized in that: include: A hot melting furnace (1), the hot melting furnace (1) comprising a furnace cover (11), a furnace body (12) and a furnace bottom plate (13), the furnace cover (11) being connected to one end of the furnace body (12), and the furnace bottom plate (13) being configured to be able to move away from and approach the furnace body (12); A heating element, the heating element being located in the furnace body (12); A tray (3), the tray (3) being rotatably mounted on the furnace bottom plate (13), and a rotating mechanism (4) for driving the tray (3) to rotate is provided on the furnace bottom plate (13); A quick cooling mechanism (5), the quick cooling mechanism (5) comprising a heat exchange pipe (51), a water-cooled heat exchanger (52) and a driving member, both ends of the heat exchange pipe (51) being connected to the furnace body (12), the water-cooled heat exchanger (52) being connected to a pipe section of the heat exchange pipe (51), and the driving member being used to drive airflow to circulate between the hot melting furnace (1) and the heat exchange pipe (51); A heat-insulating sleeve (121) is provided in the furnace body (12); a first heat-insulating door panel (15) is fixedly connected to one side of the furnace cover (11); a first air vent (151) that can be opened or closed is provided on the first heat-insulating door panel (15); a second heat-insulating door panel (16) is fixedly connected to one side of the furnace bottom plate (13); a second air vent (161) that can be opened or closed is provided on the second heat-insulating door panel (16); The heat-insulating sleeve (121), the first heat-insulating door panel (15), and the second heat-insulating door panel (16) can form a heat-melting cavity (17), and the heating element and the tray (3) are both located in the heat-melting cavity (17); A heat exchange interlayer (18) can be formed between the outer wall of the hot melt chamber (17) and the inner wall of the hot melt furnace (1), and both ends of the heat exchange pipe (51) are connected to the heat exchange interlayer (18); A first adjustable damper (152) is slidably provided at the first air outlet (151), a cross section of the first adjustable damper (152) close to the tray (3) is smaller than a cross section of the first adjustable damper (152) away from the tray (3), and a first regulating member for driving the first adjustable damper (152) to slide is provided on the first heat-insulating door panel (15); A second adjustable damper (162) is slidably provided at the second air outlet (161), the cross section of the second adjustable damper (162) close to the end of the tray (3) being smaller than the cross section of the second adjustable damper (162) away from the end of the tray (3), and a second regulating member for driving the second adjustable damper (162) to slide is provided on the second heat-insulating door panel (16); A partition (7) is provided in the heat exchange interlayer (18), and the partition (7) separates the heat exchange interlayer (18) into an upper interlayer (181) and a lower interlayer (182); one end of the heat exchange pipe (51) is connected to the upper interlayer (181), and the other end of the heat exchange pipe (51) is connected to the lower interlayer (182).

2. A large vertical high-temperature rotary furnace according to claim 1, characterized in that: It also includes a stabilizing support rod (14), the stabilizing support rod (14) including a support rod (141) and a supporting wheel (142) rotatably arranged at one end of the support rod (141); the support rod (141) is fixedly connected to the furnace bottom plate (13), and the supporting wheel (142) abuts against the bottom of the tray (3); and / or It also includes a lifting mechanism (6), which is used to drive the furnace body (12) and the furnace bottom plate (13) to move closer to or away from each other.

3. A large vertical high-temperature rotary furnace according to claim 1, characterized in that: The rotating mechanism (4) comprises a rotating rod (41) rotatably connected to the furnace bottom plate (13) and a driving assembly (42), wherein one end of the rotating rod (41) is connected to the tray (3), and the other end of the rotating rod (41) passes through the furnace bottom plate (13), and the driving assembly (42) is used to drive the rotating rod (41) to rotate.

4. A large vertical high-temperature rotary furnace according to claim 3, characterized in that: The driving assembly (42) comprises a first pulley (421), a second pulley (422), a driving belt (423) and a driving source, wherein the first pulley (421) is fixed to one end of the rotating rod (41) passing through the furnace bottom plate (13); The driving source comprises an output shaft (425), the second pulley (422) is fixedly arranged on the output shaft (425), and the driving belt (423) is sleeved outside the first pulley (421) and the second pulley (422).

5. The large vertical high-temperature rotary furnace according to claim 1, characterized in that: The first adjusting member comprises a first adjusting rod (153), the first adjusting rod (153) passing through the first thermal insulation door panel (15) and being threadedly connected to the first thermal insulation door panel (15), and one end of the first adjusting rod (153) passing through the first thermal insulation door panel (15) abuts against the first adjustable damper (152).

6. A large vertical high-temperature rotary furnace according to claim 5, characterized in that: The second adjusting member comprises a second adjusting rod (163), the second adjusting rod (163) sequentially passing through the second adjustable damper (162) and the second heat-insulating door plate (16), and being threadedly connected to the second heat-insulating door plate (16), and a support block (1631) is provided at one end of the second adjusting rod (163) passing through the second adjustable damper (162), the support block (1631) being used to abut against the second adjustable damper (162).

7. The large vertical high-temperature rotary furnace according to claim 1, characterized in that: One end of the heat exchange pipe (51) close to the lower interlayer (182) is an air outlet, and a windshield (8) is provided on one side of the air outlet. The windshield (8) is fixed to the inner wall of the furnace body (12).

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