High-temperature vacuum large quartz glass precise annealing furnace

Abstract

The utility model discloses a high-temperature vacuum bulk quartz glass precision annealing furnace which comprises an annealing furnace and a connecting pipe, a vacuum pump is installed on one side of the top end of the annealing furnace, a connecting pipe is installed on one side of the vacuum pump, a control valve is installed outside the connecting pipe, and a door is arranged at the front end of the annealing furnace. An auxiliary structure is arranged at the bottom end of the door, heaters are mounted at the upper and lower ends in the annealing furnace, and a temperature sensor is arranged on one side of the top end in the annealing furnace; the auxiliary structure comprises a mounting frame, the mounting frame is mounted at the bottom end of the annealing furnace, a screw rod is mounted in the mounting frame, and a screw sleeve is mounted on the outer side of the screw rod. According to the utility model, through the cooperative use of the screw rod and the screw sleeve, when the quartz glass is assembled or disassembled, a plurality of groups of quartz glass can be directly taken out and then disassembled, and the quartz glass does not need to be disassembled in the annealing furnace, so that the plurality of groups of quartz glass are more convenient to assemble and disassemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of glass processing, especially high-temperature vacuum bulk quartz glass precision annealing furnace. BACKGROUND

[0002] Quartz glass exists residual thermal stress after high-temperature forming or processing, and needs to be annealed after high-temperature processing. Quartz glass precision annealing furnace is needed during annealing. The high-temperature vacuum bulk quartz glass precision annealing furnace is a key equipment for heat treatment of quartz glass materials, and its core goal is to eliminate internal stress of the material by accurately controlling temperature, vacuum degree and heating uniformity, and to improve optical, mechanical and chemical properties.

[0003] Therefore, the patent specification with publication number CN216236670U discloses an optical glass precision annealing furnace, which includes an annealing furnace shell, a heating mechanism is arranged on the inner side of the annealing furnace shell, an annealing furnace cavity is formed in the inner side of the heating mechanism on the annealing furnace shell, a motor is fixedly arranged on the lower middle outer end of the annealing furnace shell, a rotating rod is connected to the upper end of the motor and penetrates through the inner wall of the lower side of the annealing furnace shell and the heating mechanism, the upper end of the rotating rod is fixedly connected with a connecting rod, an installation mechanism is fixed to the outer end of the connecting rod through a positioning sleeve, the installation mechanism includes a horizontal plate, guide grooves are formed in the front and rear sides of the two ends of the horizontal plate, positioning clamps are arranged on the upper ends of the guide grooves, and a plurality of heat-conducting grids are formed in the positioning clamps and the horizontal plate. The annealing furnace shell includes a furnace wall insulation layer. When the device is used, heat can be uniformly conducted inward, and the workpiece can be in contact with the heat in rotation, so that annealing is better.

[0004] The above-mentioned technology can adjust the position of the limiting block in the guide groove according to the size of the workpiece, adjust the position of the positioning clamp, fix the workpiece through the positioning clamp, and adapt to workpieces of different sizes for use. However, after annealing of the glass is completed, the glass needs to be sequentially disassembled and taken out from the annealing furnace. Since the interior of the annealing furnace is relatively small, it is troublesome to install or disassemble the glass, and therefore a high-temperature vacuum bulk quartz glass precision annealing furnace is needed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a high-temperature vacuum bulk quartz glass precision annealing furnace to solve the defect that the existing glass precision annealing furnace is relatively small in internal space when installing and taking out the glass, and is troublesome when installing or disassembling the glass.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-temperature vacuum precision annealing furnace for bulk quartz glass, comprising an annealing furnace and a connecting pipe; a vacuum pump is installed on one side of the top of the annealing furnace, a connecting pipe is installed on one side of the vacuum pump, a control valve is installed on the outside of the connecting pipe, and a door is provided at the front end of the annealing furnace; an auxiliary structure is provided at the bottom of the door, heaters are installed at the upper and lower ends inside the annealing furnace, and a temperature sensor is provided on one side of the top of the inside of the annealing furnace; the auxiliary structure includes a mounting frame, the mounting frame is installed at the bottom of the annealing furnace, a screw is installed inside the mounting frame, and a threaded sleeve is installed on the outside of the screw.

[0007] Preferably, the top end of the screw sleeve is fixed to the bottom end of the door, a motor is installed on one side of the door, a placement plate is installed on the other side of the door, a fixing frame is fixed at both ends of the placement plate, a rotating groove is opened inside one end of the fixing frame, a rotating rod is installed inside the rotating groove, a clamping plate is provided at the bottom end of the rotating rod, the output end of the motor is connected to one side of the placement plate, a sealing ring is installed at one end of the door, and a sealing groove is opened inside one end of the annealing furnace.

[0008] Preferably, the clamping plates are provided in multiple sets, which are arranged at equal intervals at one end of the fixing frame.

[0009] Preferably, the outer side of the rotating rod is provided with an external thread, and the inner side of the rotating groove is provided with an internal thread, and the rotating rod and the rotating groove form a threaded connection.

[0010] Preferably, the fixing frame is provided in two sets, and the two sets of fixing frames are symmetrically distributed at both ends of the placement plate.

[0011] Preferably, the annealing furnace is provided with a cooling structure, which includes a circulating water pipe installed on the inner wall of the annealing furnace. A connecting rod is installed inside the circulating water pipe, a rotating blade is installed on the outer side of one end of the connecting rod, and a fan is installed on the other end of the connecting rod.

[0012] Preferably, the rotating blades are provided in multiple sets, and the multiple sets of rotating blades are arranged in a ring at one end of the connecting rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are: by setting the auxiliary structure, it is more convenient to install and disassemble the quartz glass during annealing, and by setting the cooling structure, it is faster to cool down the annealed quartz glass.

[0014] With the auxiliary structure, during the annealing of quartz glass, the rotation between the rotating rod and the rotating groove pushes the clamping plate downward, so that it presses against the top of the quartz glass to clamp it, making it less likely to fall off when the quartz glass rotates during annealing.

[0015] Furthermore, through the cooperation between the screw and the sleeve, multiple sets of quartz glass can be removed and disassembled directly during installation or removal, without having to be disassembled inside the annealing furnace, making the installation and disassembly of multiple sets of quartz glass more convenient.

[0016] By incorporating a cooling structure, during the cooling process after quartz glass annealing, the rotating blades, connecting rods, and fan work together to utilize water flow to drive the fan's rotation and provide airflow. Even in a vacuum state inside the furnace, there may be a very small amount of residual gas. The rotation agitates this residual gas, making its distribution more uniform and slightly enhancing the heat exchange between the residual gas and the glass surface. This, combined with water circulation cooling, creates a synergistic effect, thereby improving the overall cooling efficiency and enabling the quartz glass to cool down faster, thus completing the annealing process and accelerating the cooling speed of the quartz glass. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present utility model;

[0018] Figure 2 This is a frontal cross-sectional view of the present invention.

[0019] Figure 3 This is a bottom view of the structure of this utility model;

[0020] Figure 4 This is a partial sectional view of the auxiliary structure of this utility model from the side.

[0021] Figure 5 For the present utility model Figure 2 A magnified view of the structure at point A in the middle;

[0022] Figure 6 This is a side view of the cooling structure of this utility model.

[0023] In the diagram: 1. Annealing furnace; 2. Vacuum pump; 3. Control valve; 4. Connecting pipe; 5. Door; 6. Auxiliary structure; 601. Motor; 602. Mounting bracket; 603. Screw; 604. Screw sleeve; 605. Placement plate; 606. Clamping plate; 607. Rotating rod; 608. Rotating groove; 609. Fixing bracket; 6010. Sealing ring; 6011. Sealing groove; 7. Heater; 8. Cooling structure; 801. Circulating water pipe; 802. Rotating blade; 803. Connecting rod; 804. Fan; 9. Temperature sensor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model embodiment provides a high-temperature vacuum precision annealing furnace for bulk quartz glass, such as... Figures 1-6 The annealing furnace includes an annealing furnace 1 and a connecting pipe 4. A vacuum pump 2 is installed on one side of the top of the annealing furnace 1, a connecting pipe 4 is installed on one side of the vacuum pump 2, a control valve 3 is installed on the outside of the connecting pipe 4, a door 5 is provided at the front end of the annealing furnace 1, an auxiliary structure 6 is provided at the bottom end of the door 5, heaters 7 are installed at the upper and lower ends inside the annealing furnace 1, and a temperature sensor 9 is provided on one side of the top of the annealing furnace 1.

[0026] The auxiliary structure 6 includes a mounting bracket 602, which is installed at the bottom of the annealing furnace 1. A screw 603 is installed inside the mounting bracket 602, and a screw sleeve 604 is installed on the outside of the screw 603. The top of the screw sleeve 604 is fixed to the bottom of the door 5. A motor 601 is installed on one side of the door 5, and a placement plate 605 is installed on the other side of the door 5. Fixing brackets 609 are fixed to both ends of the placement plate 605. A rotating groove 608 is opened inside one end of the fixing bracket 609, and a rotating rod 607 is installed inside the rotating groove 608. The bottom end of the rotating rod 607 is provided with... The clamping plate 606, the output end of the motor 601 is connected to one side of the placement plate 605, a sealing ring 6010 is installed on one end of the door 5, a sealing groove 6011 is opened inside one end of the annealing furnace 1, the clamping plate 606 is provided with multiple sets, the multiple sets are arranged at equal intervals at one end of the fixing frame 609, the outer side of the rotating rod 607 is provided with external thread, the inner side of the rotating groove 608 is provided with internal thread, the rotating rod 607 and the rotating groove 608 form a threaded connection, the fixing frame 609 is provided with two sets, the two sets of fixing frames 609 are symmetrically distributed at both ends of the placement plate 605;

[0027] In a further preferred embodiment of this utility model, such as Figures 1-5As shown: During the annealing of quartz glass, the quartz glass is inserted into the fixing frame 609. After insertion, the rotating rod 607 is rotated. As the rotating rod 607 rotates with the rotating groove 608, the clamping plate 606 is pushed downwards, pressing against the top of the quartz glass to clamp it, preventing it from falling off during annealing. After the quartz glass is installed, the motor on one side of the screw 603 is started by an external power source, causing the screw 603 to rotate. When the screw 603 rotates, it moves the screw sleeve 604, causing the door 5 at the top of the screw sleeve 604 to move to one side, allowing the placement plate 605 on one side of the door 5 to be inserted into the annealing furnace 1. After the placement plate 605 is inserted, the rotation of the screw 603 is stopped. At this time, the door 5 will insert the sealing ring 6010 into the sealing groove 6011 to achieve a seal, ensuring that there is no leakage at the connection when the door 5 is installed on one side of the annealing furnace 1, thus completing the sealing work.

[0028] By using the screw 603 and the screw sleeve 604 together, multiple sets of quartz glass can be removed and disassembled directly when installing or removing quartz glass, without having to disassemble inside the annealing furnace 1, making it more convenient to install and disassemble multiple sets of quartz glass.

[0029] After the quartz glass is placed inside the annealing furnace 1, the heater 7 is activated to heat the interior of the furnace. The temperature sensor 9 monitors the temperature inside the furnace 1, maintaining it at a suitable temperature for annealing the quartz glass, ensuring greater precision during annealing. During heating, the vacuum pump 2 is activated to extract air from the furnace 1, creating a vacuum inside for better annealing of the quartz glass. After heating, the vacuum pump 2 activates the motor 601, which rotates the placement plate 605, causing the quartz glass to rotate slowly, resulting in more uniform annealing. This completes the precision vacuum annealing of the quartz glass.

[0030] The annealing furnace 1 is equipped with a cooling structure 8, which includes a circulating water pipe 801. The circulating water pipe 801 is installed on the inner wall of the annealing furnace 1. A connecting rod 803 is installed inside the circulating water pipe 801. A rotating blade 802 is installed on the outer side of one end of the connecting rod 803. A fan 804 is installed on the other end of the connecting rod 803. Multiple sets of rotating blades 802 are provided, and the multiple sets of rotating blades 802 are arranged in a ring at one end of the connecting rod 803.

[0031] In a further preferred embodiment of this utility model, such as Figure 6As shown: After the quartz glass is annealed, external cooling water components are connected to both ends of the circulating water pipe 801 to allow cooling water to circulate and flow inside the circulating water pipe 801. The temperature of the cooling water is set in advance according to the glass material to prevent the cooling water temperature from being too low and affecting the cooling of the quartz glass. When the cooling water flows inside the circulating water pipe 801, it drives the 802 to rotate. When the rotating blade 802 rotates, it drives the fan 804 to rotate through the connecting rod 803. Even if the furnace is in a vacuum state, there may be a very small amount of residual gas. The rotation of 804 can agitate these residual gases, making the gas distribution more uniform and slightly enhancing the heat exchange between the residual gases and the glass surface to a certain extent. The weak airflow generated by the rotation of 804 can produce a small disturbance to the temperature field around the glass, which helps to avoid local temperature unevenness and makes the overall heat dissipation of the glass more uniform, reducing the concentration of thermal stress caused by temperature gradient. Then, in combination with water circulation cooling, a synergistic effect is formed, thereby improving the overall cooling efficiency and making the quartz glass cool down faster, thus completing the annealing process of the quartz glass.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-temperature vacuum precision annealing furnace for bulk quartz glass, characterized in that; Includes an annealing furnace (1) and a connecting pipe (4); A vacuum pump (2) is installed on one side of the top of the annealing furnace (1), a connecting pipe (4) is installed on one side of the vacuum pump (2), a control valve (3) is installed on the outside of the connecting pipe (4), and a door (5) is provided at the front end of the annealing furnace (1). An auxiliary structure (6) is provided at the bottom of the door (5), and heaters (7) are installed at the upper and lower ends inside the annealing furnace (1). A temperature sensor (9) is provided on one side of the top of the annealing furnace (1). The auxiliary structure (6) includes a mounting bracket (602), which is installed at the bottom of the annealing furnace (1). A screw (603) is installed inside the mounting bracket (602), and a screw sleeve (604) is installed on the outside of the screw (603).

2. The high-temperature vacuum bulk quartz glass precision annealing furnace according to claim 1, characterized in that: The top end of the screw sleeve (604) is fixed to the bottom end of the door (5). A motor (601) is installed on one side of the door (5), and a placement plate (605) is installed on the other side of the door (5). Fixing brackets (609) are fixed at both ends of the placement plate (605). A rotating groove (608) is opened inside one end of the fixing bracket (609). A rotating rod (607) is installed inside the rotating groove (608). A clamping plate (606) is provided at the bottom end of the rotating rod (607). The output end of the motor (601) is connected to one side of the placement plate (605). A sealing ring (6010) is installed at one end of the door (5), and a sealing groove (6011) is opened inside one end of the annealing furnace (1).

3. The high-temperature vacuum bulk quartz glass precision annealing furnace according to claim 2, characterized in that: The clamping plate (606) is provided in multiple sets, which are arranged at equal intervals at one end of the fixing frame (609).

4. The high-temperature vacuum bulk quartz glass precision annealing furnace according to claim 2, characterized in that: The outer side of the rotating rod (607) is provided with an external thread, and the inner side of the rotating groove (608) is provided with an internal thread. The rotating rod (607) and the rotating groove (608) form a threaded connection.

5. The high-temperature vacuum bulk quartz glass precision annealing furnace according to claim 4, characterized in that: The fixing frame (609) is provided in two sets, and the two sets of fixing frames (609) are symmetrically distributed at both ends of the placement plate (605).

6. The high-temperature vacuum bulk quartz glass precision annealing furnace according to claim 1, characterized in that: The annealing furnace (1) is equipped with a cooling structure (8) inside. The cooling structure (8) includes a circulating water pipe (801). The circulating water pipe (801) is installed on the inner wall of the annealing furnace (1). A connecting rod (803) is installed inside the circulating water pipe (801). A rotating blade (802) is installed on the outer side of one end of the connecting rod (803). A fan (804) is installed on the other end of the connecting rod (803).

7. The high-temperature vacuum bulk quartz glass precision annealing furnace according to claim 6, characterized in that: The rotating blades (802) are provided in multiple sets, and the multiple sets of rotating blades (802) are arranged in a ring at one end of the connecting rod (803).

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