Gas annealing furnace
By using the combined structure of mesh belt walking passage and stirred air blades in the gas annealing furnace, the problems of difficult control of annealing temperature and low thermal energy utilization in the prior art are solved, and effective annealing and energy saving for high-end glass products are achieved. And the lubricating water resistance of the glass bottle is improved through ventilation ducts and cooling fans.
Patent Information
- Application Number
- CN202421185220.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-28
AI Technical Summary
The existing gas annealing furnaces are difficult to effectively control the annealing temperature in the production of glass products, resulting in low thermal energy utilization and difficult to meet the annealing needs of high-end glass products. The combustion structure is unreasonable, resulting in waste of heat and poor annealing effect.
A gas annealing furnace was designed, using a structure that combines mesh belt walking passage and stirred air blades. The heat is mixed evenly through stirred air blades, and the flue and chimney are removed, the insulation material body and ventilation duct are added, and the thermal energy utilization is improved. and accelerate the cooling of the glass bottle by cooling fan.
It has achieved good annealing effect on high-end glass products such as medium borosilicate glass bottles, reduced the gas volume by about one-third, improved the thermal energy utilization rate, and improved the lubricating water resistance of the glass bottles through sulfur dioxide gas.
Smart Images
Figure CN222348885U_ABST
Abstract
Description
Technical Field
[0001] The utility model provides equipment in the production process of glass products, in particular to an annealing furnace. Background Art
[0002] In the production process of some glass products such as medical tube glass bottles, after the glass bottles are made by the bottle making machine, they need to be heated and annealed in an annealing furnace to eliminate the internal stress generated in the manufacturing process of the glass bottles and improve their performance. The commonly used annealing furnace is a gas annealing furnace. The existing gas annealing furnace is mainly composed of a furnace body, a transmission system and a combustion heater. The heating method is: the mesh belt drives the glass bottle to pass above the bottom plate. After the flame burning in the gas heater heats the bottom plate of the stainless steel furnace, the flame enters the flue from both sides of the bottom plate and is discharged out of the furnace. Its combustion temperature, that is, the annealing temperature, is not easy to control, and the temperature in the furnace is not very uniform. It can only complete the annealing of ordinary low-end glass bottles with low quality requirements, and it is difficult to meet the requirements of high-end medium borosilicate glass. In addition, the heating structure is unreasonable, the thermal energy utilization rate is low, and a large amount of heat will be discharged from the chimney, causing waste. Summary of the invention
[0003] The technical problem to be solved by the utility model is to provide a gas-fired annealing furnace to improve the annealing effect and save energy.
[0004] The utility model is implemented as follows: a gas annealing furnace comprises a furnace body, a mesh belt walking channel is provided in the middle of the furnace body, a heat-insulating material body is provided outside the mesh belt walking channel, a furnace communicating with the mesh belt walking channel is provided in the heat-insulating material body, a stirring fan blade is provided at the upper part of the furnace body and connected with a stirring fan on the furnace body, a stirring fan blade cover is provided above the stirring fan blade, a gas heater is provided at the lower part of the furnace body, a U-shaped furnace baffle is provided above the gas heater, a mesh belt passing through the mesh belt walking channel passes through a plurality of first rollers at the lower part of the furnace body and second rollers at both ends of the furnace body, and is connected with a reducer on the motor, and a ventilation duct is provided below the gas heater.
[0005] A cooling fan is installed outside the furnace body.
[0006] The gas annealing furnace with the above structure has a reasonable structure. During use, the gas flame is guided by the furnace baffle and enters the furnace from both sides of the furnace baffle. The stirring fan blades on the upper part of the furnace mix the heat evenly, which can anneal high-end glass products such as medium-borosilicate glass bottles with good annealing effect. Since the flue and chimney are removed, and the gas is supplied by the ventilation duct, the lower side of the furnace is also provided with a heat-insulating material body, which blocks the downward radiation of heat, has a high thermal energy utilization rate, and reduces the gas consumption by about one third. In addition, because the flue gas flame directly enters the furnace, the flue gas contains an appropriate amount of sulfur dioxide gas, which also plays a certain role in improving the lubrication and water resistance of the glass bottle. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a schematic diagram of the structure of the utility model.
[0008] Figure 2 It is a cross-sectional view of the furnace part of the utility model.
[0009] In the figure, 1. insulation material body, 2. stirring fan, 3. furnace, 4. distribution box, 5. furnace frame, 6. mesh belt, 7. cooling fan, 8. first roller, 9. motor, 10. reducer, 11. furnace height adjustment support, 12. gas heater, 13. second roller, 14. furnace body, 15. mesh belt walking channel, 16. stirring fan blade, 17. furnace baffle, 18. glass bottle, 19. ventilation duct, 20. stirring fan blade cover. DETAILED DESCRIPTION
[0010] The specific structure and working principle of the utility model are explained below with reference to the embodiments given in the accompanying drawings.
[0011] As shown in the accompanying drawings, a gas annealing furnace of the utility model comprises a furnace body 14, a mesh belt walking channel 15 is provided in the middle of the furnace body, an insulating material body 1 is provided outside the mesh belt walking channel, a furnace 3 communicating with the mesh belt walking channel is provided in the insulating material body, a stirring fan blade 16 is provided at the upper part of the furnace body and connected with the stirring fan 2 on the furnace body, a stirring fan blade cover 20 is provided above the stirring fan blade, a gas heater 12 is provided at the lower part of the furnace body, a U-shaped furnace baffle 17 is provided above the gas heater, a mesh belt 6 passing through the mesh belt walking channel passes through a plurality of first rollers 8 at the lower part of the furnace body and second rollers 13 at both ends of the furnace body, and is connected with the reducer 10 on the motor 9, and a ventilation duct 19 is provided below the gas heater 12.
[0012] Obviously, the ventilation duct 19 should be connected to the outside of the furnace body to introduce air. The gas heater is a commonly used gas combustion device, which should be connected to the gas source outside the furnace body, such as natural gas, when in use. A distribution box 4 can be arranged on the furnace body, and a temperature controller, a motor frequency converter, a button switch, etc. can be installed in the distribution box.
[0013] When in use, the glass bottle 18 to be annealed is placed on the mesh belt on the left side of the furnace body, and the rotating motor and reducer drive the mesh belt to move clockwise through the rollers. When the glass bottle moves into the furnace and the mesh belt walking channel, it is heated to achieve annealing. The stirring fan blade can control the temperature difference in the entire furnace within 2°C, and the heat is evenly mixed. The mesh belt continues to move, and the glass bottle is moved to the outside of the mesh belt walking channel. After cooling, the annealed glass bottle can be removed. The smoke generated by the gas heater enters the furnace from both sides of the furnace baffle, and further flows to the outside of the furnace body from both sides of the mesh belt walking channel, eliminating the chimney.
[0014] A cooling fan 7 is installed outside the furnace body 14. Obviously, the cooling fan is located at the outlet side of the net belt. The cooling fan can increase the speed of cooling the glass bottles.
[0015] The heat-insulating material body can be made of aluminum silicate wool.
[0016] Like the existing annealing furnace, the furnace body is composed of a furnace frame 5, furnace height adjustment legs 11, an outer shell, etc.
[0017] The mesh belt can adopt a continuously running stainless steel mesh belt.
[0018] The parts not described in detail in the present invention are all prior art.
[0019] The embodiment described above is only one of the more preferred specific implementation methods of the utility model. Common changes and substitutions made by technicians in this field within the scope of the technical solution of the utility model should be included in the protection scope of the utility model.
Claims
1. A gas annealing furnace, comprising a furnace body (14), a mesh belt running channel (15) in the middle of the furnace body, characterized in that: A heat-insulating material body (1) is provided outside the mesh belt walking channel, a furnace (3) communicating with the mesh belt walking channel is provided inside the heat-insulating material body, a stirring fan blade (16) is provided at the upper part of the furnace and connected to a stirring fan (2) on the furnace body, a stirring fan blade cover (20) is provided above the stirring fan blade, a gas heater (12) is provided at the lower part of the furnace, a U-shaped furnace baffle (17) is provided above the gas heater, a mesh belt (6) passing through the mesh belt walking channel passes through a plurality of first rollers (8) at the lower part of the furnace body and second rollers (13) at both ends of the furnace body, and is connected to a reducer (10) on a motor (9), and a ventilation duct (19) is provided below the gas heater (12).
2. The gas annealing furnace according to claim 1, characterized in that: A cooling fan (7) is installed outside the furnace body (14).