Tempering furnace for tempered glass

Abstract

The utility model relates to a kind of toughened furnace for toughened glass in the field of furnace body, including furnace body, furnace body front and back center is equipped with furnace door, ceramic fiber sealing strip is installed around furnace door inner wall, and reflective heat insulation plate is installed in furnace body inner wall;High-temperature ceramic roller is evenly distributed in the center of furnace body inner cavity, and anti-adhesion coating is sprayed on the outer surface of high-temperature ceramic roller, corundum lining is installed in inner cavity;Radiation heating pipe is installed in the front end of inner cavity top and bottom, and quenching air grid is additionally provided in rear end, uniform flow orifice plate is additionally provided below quenching air grid, and guide vane is connected between the two;Hot air circulating fan is installed in the front end of furnace body upper surface;The utility model can reduce furnace heat loss, reduce operating energy consumption and stabilize furnace temperature, provide basis for glass uniform heating;Glass is uniformly cooled quickly at the same time, obtain the toughened glass product of stress uniformity, greatly improve product mechanical strength and use safety.

Description

Technical Field

[0001] This utility model relates to the field of furnace bodies, specifically to a tempering furnace for tempered glass. Background Technology

[0002] Tempering furnaces for tempered glass are core equipment in the field of glass deep processing for strengthening flat glass. They mainly use controlled high-temperature heating and rapid cooling processes to create uniform internal stress in the glass, thereby improving its mechanical strength and thermal stability. The tempered glass produced is widely used in applications such as building exterior walls, car windows, and home appliance panels, where high glass strength is required. It is a key processing link connecting raw glass sheets to end-use products.

[0003] Existing tempering furnaces have significant shortcomings in structural design and actual operation: The insulation structure of existing furnace bodies mostly uses a single material insulation layer, lacking a dedicated structure for reflecting and recovering radiant heat from the furnace chamber. Furthermore, the seal between the furnace door and the furnace body relies heavily on ordinary heat-resistant sealing strips, which are prone to aging or deformation under long-term high-temperature conditions, leading to a gradual decline in sealing performance. This causes heat loss from the furnace chamber through conduction to the outside via the furnace wall and leakage through gaps in the furnace door, resulting in high energy consumption during operation and difficulty in maintaining a stable internal temperature, thus affecting the uniformity of the glass heating process. Additionally, the quenching air grate in existing tempering furnaces has deficiencies in controlling the cooling airflow. There is no structure between the grate and the glass to guide and refine the airflow. After exiting the grate, the cooling airflow tends to concentrate or disperse unevenly, failing to form a uniform airflow field covering the glass surface. This results in significant differences in cooling rates across different areas of the glass during the cooling process, ultimately leading to uneven stress distribution within the tempered glass, affecting the product's mechanical strength and safety. Utility Model Content

[0004] The purpose of this utility model is to solve the above defects and provide a tempering furnace for tempered glass. The composite heat insulation layer design of the furnace body, combined with the reflective heat insulation plate installed on the inner wall, can efficiently reflect the radiant heat inside the furnace chamber, thus solving the technical problem that it is difficult to maintain a stable internal temperature in the furnace chamber in the existing technology.

[0005] The objective of this utility model is achieved through the following means:

[0006] A tempering furnace for tempered glass includes a furnace body with a furnace door located at the center of the front and back sides. Ceramic fiber sealing strips are installed around the inner wall of the furnace door. The furnace body features a composite insulation layer design. A reflective heat insulation plate is installed on the inner wall of the furnace body. A furnace door plate is rotatably connected to the outer end of the furnace door. A partition plate is installed at the center of the top and bottom of the furnace body's inner cavity. High-temperature ceramic rollers are evenly distributed in the center of the furnace body's inner cavity. The outer surface of the high-temperature ceramic rollers is coated with an anti-adhesion coating. A sealant is applied between the two ends of the high-temperature ceramic rollers and the inner wall of the furnace body. The furnace is equipped with a bearing housing, and the inner cavity of the high-temperature ceramic roller is lined with corundum. Radiation heating tubes are installed at the front end of the top and bottom of the furnace body. The radiation heating tubes are arranged in an alternating pattern. A rapid cooling air grid is added at the rear end of the top and bottom of the furnace body. A flow equalization plate is added directly below the rapid cooling air grid. A guide vane is connected between the rapid cooling air grid and the flow equalization plate. A hot air circulating fan is installed at the front end of the upper surface of the furnace body. The air inlet and outlet of the hot air circulating fan are connected to the air outlet on the upper surface and the air inlet on the lower surface of the furnace body, respectively.

[0007] Rotate the furnace door panel to open the furnace door and place the glass to be tempered into the furnace cavity; the high-temperature ceramic roller rotates, which moves the glass to be tempered along the area divided by the partition plate in the furnace cavity; the bearing seat assists the high-temperature ceramic roller to maintain stable rotation through its own self-aligning function, and avoids the high-temperature ceramic roller from shifting during transmission.

[0008] The radiant heating tube is activated to heat the glass to be tempered in the furnace cavity; the hot air circulation fan is activated to drive the hot air flow in the furnace. The hot air enters through the air inlet and exits through the air outlet of the hot air circulation fan, forming a closed airflow circulation in the furnace.

[0009] After the tempered glass is heated, the rapid cooling air grid is activated. The generated cooling airflow is first guided by the guide vanes, then evenly diffused through the flow equalization plate, and finally blown onto the glass surface inside the furnace cavity. After the glass is cooled, the furnace door is rotated to open the furnace door. The high-temperature ceramic roller continues to rotate, moving the tempered glass out of the furnace cavity.

[0010] Furthermore, the center of the back of the furnace door panel is designed to protrude, and the surface of the ceramic fiber sealing strip is tightly fitted to the protruding surface of the furnace door panel.

[0011] By tightly fitting the protruding part of the furnace door panel with the ceramic fiber sealing strip, the sealing performance between the furnace door and the furnace body can be enhanced, effectively reducing the loss of heat from the furnace and ensuring the stability of the furnace temperature.

[0012] Furthermore, a handle is installed on the front of the furnace door panel. The handle has an overall U-shaped design, and anti-slip grooves are evenly distributed on its surface.

[0013] The U-shaped handle is designed to fit the human hand's grip habits, making it easier for users to apply force to open and close the oven door; the anti-slip grooves prevent hand slippage, improving the safety and convenience of operation.

[0014] Furthermore, a gas guide pipe is installed at the front end of the top and bottom of the inner cavity of the furnace body. The gas guide pipe has an overall S-shaped design, and gas guide holes are evenly opened on the surface of the gas guide pipe.

[0015] The S-shaped design extends the flow path of gas within the gas guide pipe. Combined with evenly spaced gas guide holes, this allows the gas to be distributed more evenly throughout the furnace cavity, effectively improving the uniformity of temperature distribution within the furnace and ensuring heating or processing results.

[0016] Furthermore, the air inlet and outlet of the hot air circulating fan are respectively connected to an air inlet duct and an air outlet duct.

[0017] The inlet and outlet ducts provide directional channels for the entry and exit of airflow, respectively, which can avoid airflow turbulence, ensure the airflow circulation efficiency driven by the hot air circulation fan, and thus improve the heat recycling effect in the furnace.

[0018] Furthermore, the air inlet pipe and the air outlet pipe are connected to the corresponding air pipe ends through the air outlet and air inlet of the furnace body.

[0019] This connection method enables the airflow path to be connected between the air inlet duct, the air outlet duct, and the furnace body, allowing the airflow to circulate continuously between the components. This avoids leakage or blockage of the airflow during transmission, significantly improving the integrity and efficiency of the airflow circulation inside the furnace, and further optimizing the temperature control effect inside the furnace.

[0020] The beneficial effects of this utility model are: the composite insulation layer design of the furnace body, combined with the reflective heat insulation plate installed on the inner wall, can efficiently reflect the radiant heat in the furnace chamber. With the ceramic fiber sealing strip around the inner wall of the furnace door, it can tightly seal the gaps in the furnace door and prevent aging and failure under high temperature, effectively reduce the heat loss in the furnace chamber, significantly reduce the energy consumption of the equipment, and at the same time ensure that the internal temperature of the furnace chamber remains stable for a long time, providing the basic conditions for uniform heating of glass.

[0021] The guide vanes connecting the rapid cooling air grid and the flow equalization perforated plate can guide the cooling airflow to be evenly distributed. The flow equalization perforated plate further refines the airflow, so that the cooling airflow forms a uniform and stable airflow field and fully covers the glass surface, achieving rapid and uniform cooling of the glass. This results in tempered glass products with uniform stress distribution, significantly improving the mechanical strength and safety of the product. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of a tempering furnace for tempered glass according to the present invention.

[0023] Figure 2 This is a schematic diagram of the overall right rear side view of a tempering furnace for tempered glass according to the present invention;

[0024] Figure 3 This is a cross-sectional view of the internal structure of a tempering furnace for tempered glass according to the present invention.

[0025] Figure 4 This is a cross-sectional schematic diagram of the internal structure of a high-temperature ceramic roller in a tempering furnace for tempered glass, according to this utility model.

[0026] Figure 5 This is a schematic diagram of the separation structure of the quench air grid and the flow equalization plate in a tempering furnace for tempered glass according to the present invention.

[0027] Figure 6 This is a schematic diagram of a hot air circulating fan for a tempering furnace for tempered glass and its connection structure according to the present invention.

[0028] In the diagram, 1. Furnace body; 2. Ceramic fiber sealing strip; 3. Furnace door panel; 4. Partition plate; 5. Radiant heating tube; 6. High-temperature ceramic roller; 7. Corundum lining; 8. Bearing seat; 9. Quenching air grid; 10. Flow equalization plate; 11. Guide vane; 12. Air guide pipe; 13. Hot air circulation fan; 14. Air inlet duct; 15. Air outlet duct. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] In this embodiment, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The specific implementation of a tempering furnace for tempered glass includes a furnace body 1, with a furnace door located at the center of the front and back sides of the furnace body 1. Ceramic fiber sealing strips 2 are installed around the inner wall of the furnace door. The furnace body 1 has a composite insulation layer design, and a reflective heat insulation plate is installed on the inner wall of the furnace body 1. A furnace door plate 3 is rotatably connected to the outer end of the furnace door of the furnace body 1. A partition plate 4 is installed at the center of the top and bottom of the inner cavity of the furnace body 1. High-temperature ceramic rollers 6 are evenly distributed in the center of the inner cavity of the furnace body 1. The outer surface of the high-temperature ceramic rollers 6 is coated with an anti-adhesion coating. A sealing strip is added between the two ends of the high-temperature ceramic rollers 6 and the inner wall of the furnace body 1. The furnace body 1 has a bearing housing 8, a corundum liner 7 installed in the inner cavity of the high-temperature ceramic roller 6, a radiant heating tube 5 installed at the front end of the top bottom of the inner cavity of the furnace body 1, the radiant heating tube 5 is arranged in an alternating pattern, a rapid cooling air grid 9 is added at the rear end of the top bottom of the inner cavity of the furnace body 1, a flow equalization plate 10 is added directly below the rapid cooling air grid 9, a guide vane 11 is connected between the rapid cooling air grid 9 and the flow equalization plate 10, and a hot air circulating fan 13 is installed at the front end of the upper surface of the furnace body 1, the air inlet and air outlet of the hot air circulating fan 13 are connected to the air outlet of the upper surface and the air inlet of the lower surface of the furnace body 1, respectively.

[0031] The composite insulation layer design of the furnace body 1, together with the reflective heat insulation plate on its inner wall and the ceramic fiber sealing strip 2 at the furnace door, can reduce the heat loss in the inner cavity of the furnace body 1, significantly reduce the energy consumption of the equipment, and at the same time maintain the temperature stability inside the furnace body 1; the hot air circulation fan 13 drives the air inside the furnace body 1 to form a closed circulation, which further helps to maintain the temperature field stability and improve the uniformity of glass heating.

[0032] The radiant heating tubes 5 are arranged in an alternating pattern, which can achieve a uniform three-dimensional temperature field distribution in the inner cavity of the furnace body 1, ensuring that all parts of the glass are heated evenly and effectively preventing deformation and thermal stress concentration in the glass during the heating process.

[0033] The anti-adhesion coating on the outer surface of the high-temperature ceramic roller 6 can prevent the glass from sticking to the high-temperature ceramic roller 6, and the bearing seat 8 can compensate for the installation error of the high-temperature ceramic roller 6, ensuring that the glass is stable and without deviation during the transmission process and eliminating roller mark defects.

[0034] The cooling airflow generated by the rapid cooling air grille 9 is guided by the guide vanes 11 and evenly diffused by the flow equalization plate 10, so that it can evenly cover the glass surface, achieve rapid and uniform cooling of the glass, obtain uniform stress distribution of the glass, and improve the tempering strength and safety of the product.

[0035] like Figure 2 and Figure 3 As shown, the center of the back of the furnace door panel 3 is designed to protrude, and the surface of the ceramic fiber sealing strip 2 is tightly fitted to the protruding surface of the furnace door panel 3.

[0036] The protrusion of the furnace door panel 3, through its own structure, forms a tight fit with the surface of the ceramic fiber sealing strip 2.

[0037] A handle is installed on the front of the furnace door panel 3. The handle has a U-shaped design and anti-slip grooves are evenly distributed on its surface.

[0038] Users can open or close the furnace door panel 3 by holding the U-shaped handle on the front of the furnace door panel 3; the anti-slip grooves on the surface of the handle help increase the friction between the hand and the handle during the holding process.

[0039] like Figure 6 As shown, a gas guide pipe 12 is installed at the front end of the top bottom of the inner cavity of the furnace body 1. The gas guide pipe 12 has an overall S-shaped design, and gas guide holes are evenly opened on the surface of the gas guide pipe 12.

[0040] The gas passes through the S-shaped gas guide pipe 12 at the front end of the top and bottom of the inner cavity of the furnace body 1, and through the gas guide holes evenly distributed on the surface of the gas guide pipe 12, so as to achieve uniform discharge or introduction into the inner cavity of the furnace body 1.

[0041] The air inlet and outlet of the hot air circulating fan 13 are connected to the air inlet duct 14 and the air outlet duct 15, respectively.

[0042] When the hot air circulating fan 13 is running, it drives the gas in the furnace body 1 into the air inlet duct 14 through its air inlet, and at the same time drives the internal gas out of the air outlet duct 15 into the furnace body 1 through its air outlet, thereby forming a hot air circulation motion.

[0043] The inlet pipe 14 and the outlet pipe 15 are connected to the corresponding ends of the gas pipe 12 through the outlet and inlet of the furnace body 1.

[0044] Gas enters the corresponding gas guide pipe 12 through the gas inlet of the furnace body 1 via the gas inlet pipe 14; at the same time, gas enters the gas outlet pipe 15 through the gas outlet of the furnace body 1 via the gas guide pipe 12, thereby realizing the continuous flow of air between the gas guide pipe and the gas guide pipe 12.

[0045] The usage process of a tempering furnace for tempered glass in this embodiment is as follows: The user holds the U-shaped handle on the front of the furnace door panel 3 and drives the furnace door panel 3 to open. The anti-slip groove on the surface of the handle helps to increase the friction between the hand and the handle. The protrusion of the furnace door panel 3, through its own structure, separates from the surface of the ceramic fiber sealing strip 2 and moves in close contact, thereby driving the furnace door of the furnace body 1 to open and put the glass to be tempered into the inner cavity of the furnace body 1.

[0046] The high-temperature ceramic roller 6 rotates, driving the glass to be tempered to be transported in the inner cavity of the furnace body 1 along the area divided by the partition plate 4. The bearing seat 8 assists the high-temperature ceramic roller 6 to maintain stable rotation through its own self-aligning function.

[0047] When the radiant heating tube 5 is activated, it heats the tempered glass conveyed in the inner cavity of the furnace body 1. At the same time, the hot air circulation fan 13 is activated, and the gas in the furnace body 1 is driven into the air inlet duct 14 through its air inlet. The gas passes through the air inlet duct 14, and through the air inlet of the furnace body 1, it is driven into the corresponding air guide pipe 12. The gas passes through the S-shaped air guide pipe 12 at the front end of the top and bottom of the inner cavity of the furnace body 1, and through the air guide holes evenly distributed on the surface of the air guide pipe 12, so as to achieve uniform discharge into the inner cavity of the furnace body 1. The hot air circulation fan 13 drives the internal gas to be discharged into the furnace body 1 through the air outlet duct 15 through its air outlet. At the same time, the gas passes through the air guide pipe 12, and through the air outlet of the furnace body 1, it is driven into the air outlet duct 15. The hot air enters through the air inlet and exits through the air outlet of the hot air circulation fan 13, forming a closed airflow circulation in the furnace body 1.

[0048] After the tempered glass is heated, the rapid cooling air grid 9 is activated. The generated cooling airflow is first guided by the guide vanes 11, then evenly diffused through the flow equalization plate 10, and finally blown onto the glass surface inside the furnace body 1. After the glass is cooled, the user holds the U-shaped handle on the front of the furnace door panel 3 to open the furnace door panel 3. The anti-slip grooves on the surface of the handle help increase the friction between the hand and the handle. The protrusion of the furnace door panel 3, through its own structure, separates from the surface of the ceramic fiber sealing strip 2 and moves in close contact, thereby opening the furnace door of the furnace body 1. The high-temperature ceramic roller 6 continues to rotate, causing the tempered glass to be moved out of the inner cavity of the furnace body 1.

[0049] After the tempered glass is removed, the user can close the furnace door panel 3 by holding the U-shaped handle on the front of the furnace door panel 3. The anti-slip grooves on the surface of the handle help increase the friction between the hand and the handle. The protrusion of the furnace door panel 3 forms a tight fit with the surface of the ceramic fiber sealing strip 2 through its own structure, thereby driving the furnace door of the furnace body 1 to close.

[0050] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A tempering furnace for tempered glass, comprising a furnace body, wherein a furnace door is provided at the center of the front and back sides of the furnace body, characterized in that: The furnace body has ceramic fiber sealing strips installed around the inner wall of the furnace door. The furnace body is designed with a composite insulation layer. A reflective heat insulation plate is installed on the inner wall of the furnace body. A furnace door plate is rotatably connected to the outer end of the furnace door. A partition plate is installed at the center of the top and bottom of the inner cavity of the furnace body. High-temperature ceramic rollers are evenly distributed in the center of the inner cavity of the furnace body. The outer surface of the high-temperature ceramic rollers is coated with an anti-adhesion coating. Bearing seats are added between the two ends of the high-temperature ceramic rollers and the inner wall of the furnace body. A corundum liner is installed in the inner cavity of the high-temperature ceramic rollers. Radiation heating tubes are installed at the front end of the top and bottom of the inner cavity of the furnace body. The radiation heating tubes are arranged in an alternating pattern. A rapid cooling air grid is added at the rear end of the top and bottom of the inner cavity of the furnace body. A flow equalization plate is added directly below the rapid cooling air grid. A guide vane is connected between the rapid cooling air grid and the flow equalization plate. A hot air circulating fan is installed at the front end of the upper surface of the furnace body. The air inlet and outlet of the hot air circulating fan are connected to the air outlet of the upper surface and the air inlet of the lower surface of the furnace body, respectively.

2. The tempering furnace for tempered glass according to claim 1, characterized in that: The center of the back of the furnace door panel is designed to protrude, and the surface of the ceramic fiber sealing strip is tightly fitted to the protruding surface of the furnace door panel.

3. The tempering furnace for tempered glass according to claim 1, characterized in that: The front of the furnace door panel is equipped with a handle, which has a U-shaped design and anti-slip grooves are evenly distributed on its surface.

4. The tempering furnace for tempered glass according to claim 1, characterized in that: The furnace body has an air guide pipe installed at the front end of the top and bottom of the inner cavity. The air guide pipe has an overall S-shaped design and air guide holes are evenly opened on the surface of the air guide pipe.

5. The tempering furnace for tempered glass according to claim 4, characterized in that: The air inlet and outlet of the hot air circulating fan are connected by an air inlet duct and an air outlet duct, respectively.

6. The tempering furnace for tempered glass according to claim 5, characterized in that: The air inlet pipe and the air outlet pipe are connected to the corresponding air pipe ends through the air outlet and air inlet of the furnace body.

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