Small-sized optical glass annealing furnace

Abstract

The utility model particularly discloses a small-sized optical glass annealing furnace which comprises a furnace body, a furnace cover matched with the furnace body is arranged at the top of the furnace body, the furnace body comprises a refractory layer and a heating device, and the heating device is wrapped in the refractory layer; the storage box is arranged in the furnace body, and a matched storage box cover is arranged at the top of the storage box; the pulley device is used for lifting the furnace cover. According to the utility model, the uniformity of the temperature in the furnace body can be better ensured, the uniformity of the glass annealing temperature is ensured, and the obtained test data is more stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of optical glass manufacturing, in particular to a small optical glass annealing furnace. Background Art

[0002] The annealing process for optical glass plays a crucial role in production. A high-quality annealing furnace ensures the stability of test data. However, annealing furnaces often suffer from temperature unevenness within the furnace or poor sealing, leading to inaccurate test data and, in severe cases, glass cracking. Iron used within the furnace can oxidize and delaminate, shortening the lifespan of the furnace. Utility Model Content

[0003] In order to improve the problems of uneven temperature and poor sealing of an annealing furnace, the utility model provides a small optical glass annealing furnace.

[0004] The utility model provides a small optical glass annealing furnace adopts the following technical solutions:

[0005] A small optical glass annealing furnace, comprising:

[0006] A furnace body, with a matching furnace cover disposed on the top of the furnace body, the furnace body comprising a refractory layer and a heating device, the heating device being wrapped in the refractory layer;

[0007] A storage box is movably arranged inside the furnace body, and a matching storage box cover is provided on the top of the storage box;

[0008] Pulley device for lifting the furnace cover.

[0009] Furthermore, the pulley device includes an iron frame and a pulley group arranged on the surface of the iron frame, one end of the pulley group is connected to the furnace cover through a steel cable, and the other end is connected to a heavy object through a steel cable.

[0010] Furthermore, a thermocouple is provided in the storage box, and a through hole for the thermocouple to pass through is provided in the center of the storage box cover.

[0011] Furthermore, the storage box is made of copper.

[0012] Furthermore, the heating device is a U-shaped heating rod.

[0013] Furthermore, thermal insulation cotton is provided on the bottom surface of the furnace cover.

[0014] Furthermore, a fan is provided at the center of the furnace cover.

[0015] Furthermore, thermal insulation cotton is provided around the top of the furnace body.

[0016] In summary, the present invention has at least one of the following beneficial technical effects:

[0017] A removable storage box allows access to glass samples from a distant location. Covering with insulation prevents cracking, and copper effectively prevents oxidation and delamination. A small fan and insulation covering the lid and walls improve the seal within the furnace and ensure a more uniform internal temperature. A pulley system for opening the lid is simpler, more efficient, and easier to maintain. U-shaped heating rods provide radiant heating, which promotes temperature uniformity within the furnace. This utility model ensures temperature uniformity within the furnace, ensuring uniform glass annealing temperatures and resulting in more stable and reliable test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0019] Figure 2 It is a bottom view of the furnace cover in the embodiment of the present utility model.

[0020] Figure numerals: 1. pulley assembly; 2. furnace cover; 3. furnace body insulation cotton; 4. U-shaped heating rod; 5. furnace body; 6. iron frame; 7. storage box; 8. heavy object; 9. steel cable; 10. refractory layer; 11. storage box cover; 12. fan; 13. furnace cover insulation cotton. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-2 The utility model is described in further detail.

[0022] The embodiment of the utility model discloses a small optical glass annealing furnace. Figure 1 The small optical glass annealing furnace includes a furnace body 5 and a storage box 7. A matching furnace cover 2 is installed on top of the furnace body 5. The furnace body 5 includes a refractory layer 10 and a heating device, which is encased in the refractory layer 10. The storage box 7 is movably arranged inside the furnace body 5 and is topped with a matching storage box cover 11. A pulley device is also provided for lifting the furnace cover 2. The refractory layer 10 can be made of corundum mullite.

[0023] Reference Figure 1 The pulley assembly includes an iron frame 6 and a pulley block 1 mounted on the surface of the frame 6. One end of the pulley block 1 is connected to the furnace cover 2 via a steel cable 9, and the other end is connected to a weight 8 via the steel cable 9. The frame 6 is provided with a fixed bracket, and the top platform of the frame 6 is provided with a through hole for the steel cable 9 to pass through. The pulley block 1 includes two pulleys, one mounted in the through hole of the frame 6 and the other mounted on the edge of the top platform of the frame 6. By using the pulley assembly, the furnace cover 2 can be easily lifted, which can reduce the temperature faster while preventing direct contact with the furnace cover 2.

[0024] Reference Figure 1 A thermocouple is provided in the storage box 7, and a through hole for the thermocouple to pass through is provided in the center of the storage box cover 11. The storage box is made of copper, which can effectively prevent oxidation delamination.

[0025] Reference Figure 1 The heating device is a U-shaped heating rod 4. The use of the U-shaped heating rod 4 for surrounding radiation heating is beneficial to the uniformity of the temperature in the furnace body 5, making the obtained test data more stable and reliable.

[0026] Reference Figure 1 、 Figure 2 The bottom surface of the furnace cover 2 is provided with furnace cover insulation cotton 13, and the top of the furnace body 5 is provided with furnace body insulation cotton 3. The use of insulation cotton makes the sealing inside the furnace body 5 better. A fan 12 is provided in the center of the furnace cover 2. A small fan is used to make the temperature inside the furnace body 5 more uniform.

[0027] The implementation principle of a small optical glass annealing furnace in an embodiment of the present invention is as follows: before use, check whether the instrument is normal, whether the pulley group 1 can operate normally, and whether the sealing between the furnace cover 2 and the furnace body 5 is good. Place bricks on the weight 8 to lift the furnace cover 2; check the use status of the furnace body insulation cotton 3, clean the inside of the furnace body 5, and then place the sample inside the storage box 7, and cover the storage box 7 with the storage box cover 11. Then take off the bricks, let the furnace cover 2 fall, and check whether it is sealed and there is no warping. Close the furnace cover 2 and place bricks on the furnace cover 2 to compact it. Start the program and record the process every two hours to ensure that the annealing furnace is in good condition. After the process is completed, wait for 4 hours after the power is naturally cut off, open the furnace cover 2 with the pulley device, and after the sample cools to room temperature, take out the sample from the storage box 7 for processing and testing. At the same time, check and clean the inside of the furnace body 5 to keep the inside of the furnace body 5 clean and tidy. Regularly perform maintenance and inspection on the annealing furnace, especially the heating device and thermocouple, to ensure that the annealing furnace can operate normally.

[0028] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A small optical glass annealing furnace, characterized in that: include: A furnace body, with a matching furnace cover disposed on the top of the furnace body, the furnace body comprising a refractory layer and a heating device, the heating device being wrapped in the refractory layer; A storage box is movably arranged inside the furnace body, and a matching storage box cover is provided on the top of the storage box; a pulley device for lifting the furnace cover; The bottom surface of the furnace cover is provided with heat-insulating cotton; a fan is provided in the center of the furnace cover; and heat-insulating cotton is provided around the top of the furnace body.

2. A small optical glass annealing furnace according to claim 1, characterized in that: The pulley device includes an iron frame and a pulley group arranged on the surface of the iron frame. One end of the pulley group is connected to the furnace cover through a steel cable, and the other end is connected to a weight through the steel cable.

3. A small optical glass annealing furnace according to claim 1, characterized in that: A thermocouple is arranged in the storage box, and a through hole for the thermocouple to pass through is arranged at the center of the storage box cover.

4. A small optical glass annealing furnace according to claim 1, characterized in that: The storage box is made of copper.

5. The small optical glass annealing furnace according to claim 1, characterized in that: The heating device is a U-shaped heating rod.

Images