Tunnel kiln system for annealing wide-section crystal glass products

Abstract

The utility model relates to the technical field of annealing of glass products, in particular to an annealing tunnel kiln system for wide-section crystal glass products, and aims to provide a multifunctional tunnel kiln which is wide in application range, capable of conveniently adjusting the temperature of each interval and simple in structure. Comprising a kiln body mechanism; the kiln further comprises a cooling mechanism and a kiln top mechanism, the cooling mechanism is installed on the kiln body mechanism, and the kiln top mechanism is installed on the cooling mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of glass product annealing, in particular to a tunnel kiln system for annealing wide-section crystal glass products. Background Art

[0002] In the crystal glassware industry, the annealing process for firing products with wide cross-sections and large sizes is very difficult to handle. The commonly used method is to first use the trough sinking process to shape the glass products. After the glass products in the trough sinking furnace drop to the temperature required for the annealing process, the trough sinking furnace is heated again to extend the annealing time to eliminate stress. The trough sinking furnace equipment has a low degree of automation, and it is necessary to manually pour the glass solution heated by the glass melting furnace into the trough sinking furnace, then cover and transport it. The annealing purpose is achieved by heating and preserving the trough sinking furnace and manually gradually lowering the heating temperature according to the requirements of the annealing process.

[0003] In the existing wide-section crystal glass product annealing tunnel kiln system, for example, a wide-section crystal glass product annealing tunnel kiln system disclosed in the utility model patent application number 202323215383.8 improves the thermal insulation performance by improving the thermal insulation structure of the side walls and top of the kiln body; at the same time, air curtain holes are set at the tunnel feed port, and the air curtain wall is used to isolate the inflow of external air or the outflow of hot air in the kiln, thereby reducing the heat dissipation from the tunnel port; by setting raised parts on both sides of the loading platform and setting grooves matching the raised parts on the side walls of the kiln body, a curved seal is formed to reduce the heat in the kiln from dissipating downward from the loading car; and the thermal insulation performance of the kiln is comprehensively improved through various means.

[0004] At present, the temperature curve of the trough sinking furnace heating annealing process relies entirely on manual control. Each trough sinking furnace can only produce one glass product per kiln. If the temperature is not well controlled during the production process, the glass is prone to cracking and the yield cannot be guaranteed. At the same time, in order to meet the production needs, the glass melting furnace built for the production of glass products cannot work intermittently. If the temperature drops to the solidification point of the glass solution, the entire furnace must be rebuilt. Due to the high investment cost of the glass melting furnace, a constant temperature must generally be maintained for 24 hours to prevent the glass solution from solidifying. The larger the size of the glass product, the longer the annealing time required. During this period, the glass melting furnace must be heated 24 hours a day. In order to maintain a certain output, more trough sinking furnaces must be built, which occupy a large area and have many safety hazards. Utility Model Content

[0005] In order to solve the above technical problems, the present invention provides a wide-section crystal glass product annealing tunnel kiln system with a multifunctional tunnel kiln having a wide range of applications, convenient adjustment of the temperature in each zone, and a simple structure.

[0006] The utility model discloses a wide-section crystal glass product annealing tunnel kiln system, comprising a kiln body mechanism, a cooling mechanism and a kiln roof mechanism, wherein the cooling mechanism is mounted on the kiln body mechanism and the kiln roof mechanism is mounted on the cooling mechanism; an electric heating wire is used to heat the product, and in order to ensure the utilization rate of heat radiation, the upper space of the product in the kiln can be reduced; at the same time, two ceramic tubes are arranged on the kiln roof at the front of the kiln to discharge part of the moisture of the kiln car itself; the heating wire is selected according to the power required by the space; in order to prevent the heating wire from softening and deforming due to heat, a high-aluminum ceramic tube is arranged inside each heating wire, and the ceramic tubes with the electric heating wire are evenly fixed on the kiln body bracket; because the kiln cross-section is wide, the ceramic tubes on the top need to be additionally provided with hanging bricks; in consideration of energy saving and consumption reduction, a tube with a smaller thermal conductivity coefficient is selected In order to prevent the expansion and displacement of the insulation cotton material, the insulation cotton material in each area is cut and compressed into insulation modules of the same length and width. The modules are fixed to the steel structure of the kiln body through built-in anchors through heat-resistant screws. Since the length and width of the modules are consistent, the expansion surface of the modules can be reversed to ensure better sealing. The product is loaded on the upper part of the kiln car, and the bottom of the kiln car is also paved with insulation cotton with low heat conductivity. The surrounding area is built with refractory bricks with a curved sealing structure to ensure a good seal between the front and rear kiln cars and the kiln wall. A sand sealing groove is arranged between the kiln car steel frame and the kiln wall to further reduce temperature loss. The purpose of the present invention is to provide a multifunctional tunnel kiln with a wide range of applications, convenient adjustment of the temperature in each zone, and a simple structure.

[0007] Preferably, the kiln body structure includes dehumidification ceramic tubes, high-aluminum hanging bricks, insulation cotton blocks, kiln wall curved sealing bricks, kiln sand sealing grooves, kiln body steel structure, electric heating wires, kiln rails and kiln car mechanisms. The electric heating wires are evenly distributed on the top of the kiln and fixed to the kiln roof steel structure with high-aluminum hanging bricks in the middle. Low thermal conductivity insulation materials are fixed to the steel structures of various parts of the kiln with anchor screws. Heavy refractory bricks are used for the curved seal in the kiln, and lightweight insulation bricks are used for insulation after the curved seal. Insulation cotton is used for the part in contact with the steel structure, and sand sealing grooves are used to seal the kiln car and the kiln wall. By introducing the annealing tunnel kiln electric heating system, with kiln walls and kiln cars with curved sealing structures, temperature loss can be reduced. At the same time, electric heating wires are selected according to the temperature requirements of each zone, which can reduce the installation investment cost. The temperature of each temperature point is preset in advance through the automatic control system, reducing manual intervention and further ensuring temperature stability.

[0008] Preferably, the cooling mechanism includes an indirect cooling main pipe, an indirect cooling branch pipe, a kiln wall steel structure and a heating wire. A heating and cooling dual system is simultaneously set in the composite part of the cooling zone and the heating zone, and the length of the heating or cooling zone can be freely adjusted; by starting the heating or cooling system, the annealing temperature curve can be matched.

[0009] Preferably, the kiln roof structure includes a cover plate insulation cotton, a steel structure cover plate and a kiln body steel structure. The kiln roof of the rear free cooling part is provided with an insulation steel structure cover plate; the kiln roof of the rear free cooling part is provided with an insulation steel structure cover plate. The heat dissipation speed can be adjusted by adjusting the thickness of the insulation cotton to ensure that the temperature of the glass products in the kiln meets the process curve requirements. In order to avoid too fast heat dissipation and prevent external cold air from contacting the glass products, the insulation cotton can be removed when heat dissipation is required and the steel cover plate surface can be used for heat dissipation. At the same time, the gap reserved between the two steel cover plates can be used for heat dissipation in the area where rapid cooling is required.

[0010] Preferably, the kiln car mechanism includes a kiln car steel structure, kiln car wheels, kiln car curved sealing bricks, kiln car thermal insulation cotton and product molds. Curved sealing bricks and thermal insulation cotton are used to seal the kiln cars, and a sealing structure is also provided between the kiln car steel structures. Selecting thermal insulation cotton with anchors can reduce heat dissipation from the kiln wall and reduce energy consumption.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the electric heating wire is used to heat the product. In order to ensure the utilization rate of heat radiation, the upper space of the product in the kiln can be reduced. At the same time, two ceramic tubes are set on the kiln roof at the front of the kiln to discharge part of the moisture of the kiln car itself. The heating wire is selected according to the power required by the space. In order to prevent the heating wire from softening and deforming due to heat, a high-aluminum ceramic tube is set inside each heating wire. The ceramic tube with the electric heating wire is evenly fixed on the kiln body bracket. Because the cross-section of the kiln is wide, the ceramic tube on the top needs to be equipped with hanging bricks. Considering energy saving and consumption reduction, the insulation cotton material with a smaller thermal conductivity coefficient is selected. In order to prevent the insulation cotton from expanding and shifting, the insulation cotton material in each zone is fixed. After cutting, it is compressed into insulation modules of the same length and width, with built-in anchors, and fixed to the steel structure of the kiln body through heat-resistant screws. Since the length and width of the modules are consistent, the expansion surface of the modules can be reversed to ensure better sealing. The product is loaded on the upper part of the kiln car, and the bottom of the kiln car is also paved with insulation cotton with low heat conductivity. Refractory bricks with a curved sealing structure are used around it to ensure good sealing between the front and rear kiln cars and the kiln wall. Sand sealing grooves are arranged between the kiln car steel frame and the kiln wall to further reduce temperature loss. The purpose of the present invention is to provide a multifunctional tunnel kiln with a wide range of applications, convenient adjustment of the temperature in each interval, and a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the kiln body and kiln car structures of the utility model;

[0013] Figure 2 This is a schematic diagram of the cooling mechanism structure of the utility model;

[0014] Figure 3 This is a schematic diagram of the kiln top structure of the utility model;

[0015] Markings in the attached figure: 1. Kiln body mechanism; 11. Dehumidification ceramic tube; 12. High-aluminum hanging brick; 13. Insulation cotton block; 14. Kiln wall curved sealing brick; 15. Kiln sand sealing groove; 16. Kiln body steel structure 1; 17. Electric heating wire; 18. Kiln track; 2. Cooling mechanism; 21. Indirect cooling main pipe; 22. Indirect cooling branch pipe; 23. Kiln wall steel structure; 24. Heating wire; 3. Kiln roof mechanism; 31. Cover plate insulation cotton; 32. Steel structure cover plate; 33. Kiln body steel structure 2; 4. Kiln car mechanism; 41. Kiln car steel structure; 42. Kiln car wheel; 43. Kiln car curved sealing brick; 44. Kiln car insulation cotton; 45. Product mold. DETAILED DESCRIPTION

[0016] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0017] Example 1

[0018] like Figures 1 to 3 As shown, the wide-section crystal glass product annealing tunnel kiln system includes a kiln body mechanism 1, a cooling mechanism 2 and a kiln top mechanism 3. The cooling mechanism 2 is installed on the kiln body mechanism 1, and the kiln top mechanism 3 is installed on the cooling mechanism 2.

[0019] The kiln body mechanism 1 includes a moisture-removing ceramic tube 11, high-aluminum hanging bricks 12, insulation wool blocks 13, kiln wall curved sealing bricks 14, kiln sand sealing grooves 15, a kiln body steel structure 16, electric heating wires 17, kiln rails 18, and a kiln car mechanism 4. The electric heating wires are evenly distributed on the top of the kiln and fixed to the kiln roof steel structure with high-aluminum hanging bricks in the middle. The low-thermal-conductivity insulation material is fixed to the steel structure of the kiln with anchor screws. The kiln curved seal is made of heavy refractory bricks, and lightweight insulation bricks are used for insulation after the curved seal. Insulation wool is used for insulation in the contact part with the steel structure. Sand sealing grooves are used to seal the kiln car and the kiln wall.

[0020] The cooling mechanism 2 includes an indirect cooling main pipe 21, an indirect cooling branch pipe 22, a kiln wall steel structure 23 and a heating wire 24. A heating and cooling dual system is set at the composite part of the cooling zone and the heating zone, and the length of the heating or cooling zone can be freely adjusted;

[0021] The kiln roof structure 3 includes a cover plate insulation cotton 31, a steel structure cover plate 32 and a kiln body steel structure 2 33. The kiln roof of the tail free cooling part is provided with an insulation steel structure cover plate;

[0022] The kiln car mechanism 4 includes a kiln car steel structure 41, kiln wheels 42, kiln car curved sealing bricks 43, kiln car thermal insulation cotton 44 and a product mold 45. The kiln cars are sealed with curved sealing bricks and thermal insulation cotton, and a sealing structure is also provided between the kiln car steel structures.

[0023] The product is heated by electric heating wire. To ensure the utilization rate of heat radiation, the upper space of the product in the kiln can be reduced. At the same time, two ceramic tubes are set on the kiln roof at the front of the kiln to discharge some of the moisture in the kiln car itself. The heating wire is selected according to the power required by the space. To prevent the heating wire from softening and deforming due to heat, a high-aluminum ceramic tube is set inside each heating wire. The ceramic tube with the electric heating wire is evenly fixed on the kiln body bracket. Due to the wide cross-section of the kiln, the ceramic tube on the top needs to be equipped with hanging bricks. Considering energy saving and consumption reduction, the insulation cotton material with a smaller thermal conductivity coefficient is selected. To prevent the insulation cotton from expanding and shifting, the insulation cotton material in each area is cut and compressed into lengths. Insulation modules of uniform width have built-in anchors and are fixed to the steel structure of the kiln body by heat-resistant screws. Since the modules are of uniform length and width, the expansion surface of the modules can be reversed to ensure better sealing. The products are loaded on the upper part of the kiln car, and the bottom of the kiln car is also paved with insulation cotton with low thermal conductivity. Refractory bricks with a curved sealing structure are used around it to ensure good sealing between the front and rear kiln cars and the kiln wall. Sand sealing grooves are arranged between the kiln car steel frame and the kiln wall to further reduce temperature loss. The purpose of the present invention is to provide a multifunctional tunnel kiln with a wide range of applications, convenient temperature adjustment in each interval, and a simple structure.

[0024] like Figures 1 to 3 As shown, the wide-section crystal glass product annealing tunnel kiln system of the present invention adopts electric heating wire to heat the product during operation. In order to ensure the utilization rate of heat radiation, the upper space of the product in the kiln can be reduced. At the same time, two ceramic tubes are set at the top of the kiln in the front part of the kiln to discharge part of the moisture of the kiln car itself. The heating wire is selected according to the power required by the space. In order to prevent the heating wire from softening and deforming due to heat, a high-aluminum ceramic tube is set inside each heating wire. The ceramic tubes with electric heating wires are evenly fixed on the kiln body bracket. Due to the wide cross-section of the kiln, hanging bricks are required for the ceramic tubes on the top. Considering energy saving and consumption reduction, the thermal conductivity coefficient is selected. To prevent the smaller insulation cotton materials from expanding and shifting, the insulation cotton materials in each area are cut and compressed into insulation modules of the same length and width. The modules are fixed to the steel structure of the kiln body through built-in anchors through heat-resistant screws. Since the modules are of the same length and width, the expansion surface of the modules can be reversed to ensure better sealing. The products are loaded on the upper part of the kiln car, and the bottom of the kiln car is also paved with insulation cotton with low heat conductivity. The surrounding area is built with refractory bricks with a curved sealing structure to ensure a good seal between the front and rear kiln cars and the kiln wall. Sand sealing grooves are arranged between the kiln car steel frame and the kiln wall to further reduce temperature loss.

[0025] The main function achieved by the utility model is: in the annealing process of glass products, the purpose of the invention is to provide a multifunctional tunnel kiln with a wide range of applications, convenient adjustment of the temperature in each interval, and a simple structure.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A wide-section crystal glass product annealing tunnel kiln system, comprising a kiln body structure (1); characterized in that: It also includes a cooling mechanism (2) and a kiln top mechanism (3), wherein the cooling mechanism (2) is mounted on the kiln body mechanism (1), and the kiln top mechanism (3) is mounted on the cooling mechanism (2); The kiln body mechanism (1) includes a moisture-removing ceramic pipe (11), high-aluminum hanging bricks (12), thermal insulation cotton blocks (13), kiln wall curved sealing bricks (14), kiln sand sealing grooves (15), a kiln body steel structure (16), electric heating wires (17), kiln rails (18) and a kiln car mechanism (4). The electric heating wires are evenly distributed on the top of the kiln, fixed to the kiln top steel structure with high-aluminum hanging bricks in the middle, and fixed to the kiln steel structure at various locations of the kiln with low thermal conductivity insulation materials using anchor screws. Heavy refractory bricks are used for the curved sealing inside the kiln, and lightweight thermal insulation bricks are used for thermal insulation after the curved sealing. Thermal insulation cotton is used for the part in contact with the steel structure, and the kiln car and the kiln wall are sealed with sand sealing grooves. The cooling mechanism (2) includes an indirect cooling main pipe (21), an indirect cooling branch pipe (22), a kiln wall steel structure (23) and a heating wire (24). A heating and cooling dual system is simultaneously set in the composite part of the cooling zone and the heating zone, and the length of the heating or cooling zone can be freely adjusted; The kiln roof mechanism (3) comprises a cover plate heat-insulating cotton (31), a steel structure cover plate (32) and a second kiln body steel structure (33). The kiln roof of the tail free cooling part is provided with a heat-insulating steel structure cover plate.

2. The wide-section crystal glass product annealing tunnel kiln system according to claim 1, characterized in that: The kiln car mechanism (4) comprises a kiln car steel structure (41), kiln wheels (42), kiln car curved sealing bricks (43), kiln car heat insulation cotton (44) and a product mold (45). The kiln cars are sealed with curved sealing bricks and heat insulation cotton, and a sealing structure is also provided between the kiln car steel structures.

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