A high-temperature melting device for preparing a large-diameter quartz tube

Abstract

The utility model proposes a kind of high-temperature melting equipment for large-diameter quartz tube preparation, it is related to quartz tube processing field, the utility model discloses a support assembly for placing quartz tube, preheating component for preheating quartz tube;And melting component for melting quartz tube;The support assembly includes: support base;And fixed in the top of support base two groups of quartz tube placement base;The preheating component includes: fixed between two groups of the bottom heating ring of quartz tube placement base.The utility model can adjust the height of top heating ring according to the diameter of quartz tube by the preheating component setting, and the quartz tube is preheated by the heating pipe inside bottom heating ring and top heating ring, avoid directly using oxyhydrogen flame gun to heat the quartz tube with lower temperature, quartz tube surface temperature distribution is uniform after preheating, reduce the local temperature difference between oxyhydrogen flame gun and quartz tube wall, improve security.

Description

Technical Field

[0001] This utility model relates to the field of quartz tube processing, specifically a high-temperature melting device for backup of large-diameter quartz tubes. Background Technology

[0002] Large-diameter quartz tubes are a type of special industrial glass tube made primarily from high-purity silicon dioxide. Due to their excellent physical and chemical properties, they play an irreplaceable role in fields such as semiconductors, photovoltaics, optical fiber communication, chemicals, and high-end scientific research.

[0003] In the process of preparing large-diameter quartz tubes, the quartz tube wall is usually heated by melting equipment and then the hole is expanded. For example, the existing publicly available technical solution CN102219362B discloses a method for manufacturing large-diameter quartz tubes, which directly melts the quartz tube using an oxyhydrogen flame gun.

[0004] However, directly heating a relatively cold quartz tube with an oxyhydrogen flame gun can easily cause a sudden rise in the surface temperature of the quartz tube, leading to localized vaporization or structural loosening, which results in low safety. Utility Model Content

[0005] The purpose of this utility model is to provide a high-temperature melting device for backup large-diameter quartz tubes, so as to solve the problems mentioned in the background art and overcome its technical defects.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a high-temperature melting device for backup of large-diameter quartz tubes, including a support assembly for placing the quartz tube, a preheating assembly for preheating the quartz tube, and a melting assembly for melting the quartz tube;

[0007] The support assembly includes: a support base; and two sets of quartz tube placement bases fixed to the top of the support base;

[0008] The preheating assembly includes: a bottom heating ring fixed between the two sets of quartz tube placement bases; a top heating ring that is slidably mounted above the bottom heating ring; and heating tubes embedded in the surfaces of the top heating ring and the bottom heating ring.

[0009] The melting assembly includes an oxyhydrogen flame gun that is slidably mounted on the side of the top heating ring.

[0010] As a further embodiment of this utility model, the preheating assembly further includes: lifting sliders fixed to the left and right sides of the top heating ring; lifting screws installed inside the lifting sliders via threaded sleeves; and screw motors fixed to the top of the lifting screws.

[0011] As a further embodiment of this invention, the melting assembly further includes: a guide groove formed on the side of the top heating ring; a guide slider slidably installed inside the guide groove; and a flame gun mounting bracket fixed to the front end of the guide slider.

[0012] As a further embodiment of this invention, the melting assembly further includes: a lifting screw mounted in the middle of the guide slider via a bearing; and an adjustment knob fixed to one end of the lifting screw that passes through the guide groove.

[0013] As a further embodiment of this utility model: the top surface of the bottom heating ring is adapted to the height of the top surface of the quartz tube placement base, and the quartz tube placement base is symmetrically arranged about the front and rear sides of the bottom heating ring.

[0014] As a further embodiment of this utility model, the support assembly further includes a device top plate welded above the support base, and a limiting component for fixing the quartz tube is installed on the device top plate.

[0015] As a further embodiment of this utility model, the limiting component includes: a lifting bracket that is lifted and installed above the quartz tube placement base; and a lower pressure roller that is rotatably installed inside the lifting bracket, the lower pressure roller coinciding with the vertical center line of the quartz tube placement base.

[0016] As a further improvement of this utility model, the limiting component also includes: a hydraulic cylinder fixed to the top of the lifting bracket; and a guide rod penetrating the top plate of the device.

[0017] Compared with the prior art, the beneficial effects of this utility model include:

[0018] 1. This utility model, through the preheating component, can adjust the height of the top heating ring according to the diameter of the quartz tube, and preheat the quartz tube through the heating tube inside the bottom heating ring and the top heating ring, avoiding the direct use of the hydrogen-oxygen flame gun to heat the low-temperature quartz tube. After preheating, the surface temperature of the quartz tube is evenly distributed, reducing the local temperature difference between the hydrogen-oxygen flame gun and the quartz tube wall, and improving safety.

[0019] 2. This utility model, through the setting of a limiting component, can descend and contact the top of the quartz tube under the action of the liftable lower pressure roller, thereby playing a certain limiting role on the quartz tube. Attached Figure Description

[0020] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0021] Figure 1 The schematic diagram shows an overall structural schematic diagram according to one embodiment of the present invention;

[0022] Figure 2 A schematic diagram of a preheating assembly according to one embodiment of the present invention is shown.

[0023] Figure 3 The schematic diagram shows a half-sectional view according to one embodiment of the present invention;

[0024] Figure 4 The schematic diagram shows a fusion assembly according to one embodiment of the present invention.

[0025] The diagram is labeled as follows: 1. Support assembly; 101. Support base; 102. Top plate of the device; 103. Quartz tube placement base; 2. Preheating assembly; 201. Screw motor; 202. Lifting screw; 203. Lifting slider; 204. Bottom heating ring; 205. Heating tube; 206. Top heating ring; 3. Limiting assembly; 301. Hydraulic cylinder; 302. Guide rod; 303. Lower pressure roller; 304. Lifting bracket; 4. Melting assembly; 401. Guide chute; 402. Hydrogen-oxygen flame gun; 403. Flame gun mounting bracket; 404. Guide slider; 405. Lifting screw; 406. Adjustment knob. Detailed Implementation

[0026] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0027] An embodiment of the present invention is shown in conjunction with the accompanying drawings.

[0028] Example 1:

[0029] Please see Figures 1-4 This is the first embodiment of the present utility model.

[0030] This embodiment provides a backup high-temperature melting device for large-diameter quartz tubes, including a support assembly 1 for placing the quartz tube, a preheating assembly 2 for preheating the quartz tube, and a melting assembly 4 for melting the quartz tube;

[0031] Support assembly 1 includes: a support base 101; and two sets of quartz tube placement bases 103 fixed to the top of the support base 101;

[0032] The preheating assembly 2 includes: a bottom heating ring 204 fixed between two sets of quartz tube placement bases 103; a top heating ring 206 that is lifted and slidably mounted above the bottom heating ring 204; and a heating tube 205 embedded in the surfaces of the top heating ring 206 and the bottom heating ring 204.

[0033] The melting assembly 4 includes a hydrogen-oxygen flame gun 402 that is slidably installed on the side of the top heating ring 206. The hydrogen-oxygen flame gun 402 adopts existing hydrogen-oxygen flame gun equipment and is mainly composed of a gun rod, nozzle, gun frame, control valve, built-in safety device, etc. The generated hydrogen-oxygen mixture is delivered to the hydrogen-oxygen flame gun through safety devices such as safety valve and flame arrester. In the flame gun, hydrogen is used as fuel and oxygen is used as combustion accelerant. It is sprayed out through the nozzle and ignited to form a stable high-temperature neutral hydrogen-oxygen flame, thereby melting the quartz tube.

[0034] Specifically, the preheating component 2 also includes: lifting sliders 203 fixed to the left and right sides of the top heating ring 206; lifting screws 202 installed inside the lifting sliders 203 via screw sleeves; and screw motors 201 fixed to the top of the lifting screws 202.

[0035] Furthermore, the power output end of the lead screw motor 201 can drive the lifting lead screw 202 to rotate. When the lifting lead screw 202 rotates, it can drive the lifting slider 203 to slide on the lifting lead screw 202. Thus, the lifting slider 203 drives the top heating ring 206 to move up and down, so that the top heating ring 206 moves downward and approaches the bottom heating ring 204. Thus, the bottom heating ring 204 and the top heating ring 206 preheat the quartz tube.

[0036] Specifically, the melting assembly 4 also includes: a guide groove 401 opened on the side of the top heating ring 206; a guide slider 404 slidably installed inside the guide groove 401; and a flame gun mounting bracket 403 fixed to the front end of the guide slider 404.

[0037] Furthermore, the guide slider 404 on one side of the flame gun mounting bracket 403 can slide inside the guide groove 401, which facilitates the height adjustment of the hydrogen-oxygen flame gun 402 at the bottom of the flame gun mounting bracket 403.

[0038] Specifically, the melting assembly 4 also includes: a lifting screw 405 mounted in the middle of the guide slider 404 via a bearing; and an adjustment knob 406 fixed to one end of the lifting screw 405 that passes through the guide groove 401.

[0039] Furthermore, rotating the adjustment knob 406 can drive the lifting screw 405 to rotate. The lifting screw 405 is threadedly connected to the guide groove 401, thereby driving the guide slider 404 to slide inside the guide groove 401 under the action of the lifting screw 405.

[0040] Specifically, the top surface of the bottom heating ring 204 is height-matched with the top surface of the quartz tube placement base 103, and the quartz tube placement base 103 is symmetrically arranged about the front and rear sides of the bottom heating ring 204.

[0041] Furthermore, the bottom heating ring 204 and the top heating ring 206 form a circular structure located on the outside of the quartz tube, and the quartz tube can be preheated through the heating tube 205 inside the bottom heating ring 204 and the top heating ring 206.

[0042] In this embodiment, the preheating component 2 allows for adjustment of the height of the top heating ring 206 according to the diameter of the quartz tube. The bottom heating ring 204 and the heating tube 205 inside the top heating ring 206 preheat the quartz tube, avoiding direct heating of the low-temperature quartz tube by the oxyhydrogen flame gun 402. After preheating, the surface temperature of the quartz tube is evenly distributed, reducing the local temperature difference between the oxyhydrogen flame gun 402 and the quartz tube wall, thus improving safety.

[0043] Example 2:

[0044] Please see Figures 1-3 This is the second embodiment of the present invention.

[0045] This embodiment provides a backup high-temperature melting device for large-diameter quartz tubes, comprising:

[0046] Specifically, the support assembly 1 also includes: a device top plate 102 welded above the support base 101, and a limiting assembly 3 for fixing the quartz tube is installed on the device top plate 102.

[0047] Furthermore, the limiting component 3 can limit the quartz tube placed on top of the quartz tube placement base 103.

[0048] Specifically, the limiting component 3 includes: a lifting bracket 304 that is lifted and installed above the quartz tube placement base 103; and a lower pressure roller 303 that is rotatably installed inside the lifting bracket 304, the lower pressure roller 303 coinciding with the vertical center line of the quartz tube placement base 103.

[0049] Furthermore, the lower pressure roller 303 can be raised and lowered under the action of the lifting bracket 304, so that the lower pressure roller 303 contacts the top of the quartz tube, thereby playing a certain limiting role on the quartz tube.

[0050] Specifically, the limiting component 3 also includes: a hydraulic cylinder 301 fixed to the top of the lifting bracket 304; and a guide rod 302 penetrating through the top plate 102 of the device.

[0051] Furthermore, the telescopic end of the hydraulic cylinder 301 is fixedly connected to the lifting bracket 304. The hydraulic cylinder 301 can push the lifting bracket 304 to move downward, and the guide rod 302 is used to guide the lifting bracket 304.

[0052] In this embodiment, the limiting component 3 can be lowered to contact the top of the quartz tube under the action of the liftable lower pressure roller 303, thereby limiting the quartz tube to a certain extent.

[0053] Working principle: The quartz tube is placed on top of the quartz tube placement base 103, and the hydraulic cylinder 301 is activated. The hydraulic cylinder 301 pushes the lifting bracket 304 downward, and the guide rod 302 slides within the top plate 102 of the device, thereby causing the lifting bracket 304 to move downward. The lower pressure roller 303 contacts the top of the quartz tube, pressing it down. Subsequently, the height of the top heating ring 206 can be adjusted according to the diameter of the quartz tube. The screw motor 201 is activated, and the power output end of the screw motor 201 can drive the lifting screw 202 to rotate. When the lifting screw 202 rotates, it can drive the lifting slider 203 to move on the lifting screw 202. The sliding mechanism causes the top heating ring 206 to move up and down via the lifting slider 203, bringing it closer to the bottom heating ring 204. When the heating tube 205 is powered on, it heats up, preheating the quartz tube via the bottom and top heating rings 204 and 206. Then, the adjusting knob 406 is rotated, causing the lifting screw 405 to rotate. Under the action of the lifting screw 405, the guide slider 404 slides inside the guide groove 401, causing the oxyhydrogen flame gun 402 to move downwards. The oxyhydrogen flame gun 402 melts the wall of the quartz tube.

[0054] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A high-temperature melting device for backup of large-diameter quartz tubes, characterized in that, It includes a support assembly (1) for placing the quartz tube, a preheating assembly (2) for preheating the quartz tube, and a melting assembly (4) for melting the quartz tube. The support assembly (1) includes: a support base (101); and two sets of quartz tube placement bases (103) fixed to the top of the support base (101); The preheating assembly (2) includes: a bottom heating ring (204) fixed between the two sets of quartz tube placement bases (103); a top heating ring (206) that is slidably mounted above the bottom heating ring (204); and heating tubes (205) embedded in the surfaces of the top heating ring (206) and the bottom heating ring (204). The melting assembly (4) includes an oxyhydrogen flame gun (402) that is slidably mounted on the side of the top heating ring (206).

2. The high temperature melting apparatus for preparing a large-diameter quartz tube according to claim 1, wherein The preheating assembly (2) further includes: lifting sliders (203) fixed on the left and right sides of the top heating ring (206); lifting screws (202) installed inside the lifting sliders (203) through screw sleeves; and screw motors (201) fixed on the top of the lifting screws (202).

3. The high-temperature melting apparatus for preparing a large-diameter quartz tube according to claim 2, wherein The melting assembly (4) further includes: a guide groove (401) opened on the side of the top heating ring (206); a guide slider (404) slidably installed inside the guide groove (401); and a flame gun mounting bracket (403) fixed to the front end of the guide slider (404).

4. The high temperature melting apparatus for preparing a large-diameter quartz tube according to claim 3, wherein The melting assembly (4) further includes: a lifting screw (405) mounted in the middle of the guide slider (404) via a bearing; and an adjustment knob (406) fixed to one end of the lifting screw (405) that passes through the guide groove (401).

5. A high-temperature melting device for backup large-diameter quartz tubes according to claim 4, characterized in that, The top surface of the bottom heating ring (204) is adapted to the height of the top surface of the quartz tube placement base (103), and the quartz tube placement base (103) is symmetrically arranged about the front and rear sides of the bottom heating ring (204).

6. A high-temperature melting device for backup large-diameter quartz tubes according to claim 5, characterized in that, The support assembly (1) further includes a device top plate (102) welded above the support base (101), and a limiting assembly (3) for fixing the quartz tube is installed on the device top plate (102).

7. A high-temperature melting device for backup large-diameter quartz tubes according to claim 6, characterized in that, The limiting component (3) includes: a lifting bracket (304) that is lifted and installed above the quartz tube placement base (103); and a lower pressure roller (303) that is rotatably installed inside the lifting bracket (304), wherein the lower pressure roller (303) coincides with the vertical center line of the quartz tube placement base (103).

8. The high temperature melting apparatus for preparing a large-diameter quartz tube according to claim 7, wherein The limiting component (3) further includes: a hydraulic cylinder (301) fixed to the top of the lifting bracket (304); and a guide rod (302) penetrating through the top plate (102) of the device.

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