Glass cullet drying system

Abstract

The present application relates to the field of drying, discloses a broken glass drying system, including shell and drying mechanism, wherein, the inside of shell is surrounded and formed with drying channel; the drying mechanism includes first fan, air supply pipe, air supply pipe and combustion chamber, air supply pipe is connected to first fan, first fan can make the air flow in air supply pipe flow to combustion chamber, combustion chamber and drying channel are communicated with each other, one end of air supply pipe is provided with air supply ring, air supply ring is sleeved on the outside of air supply pipe, annular flow channel is formed between air supply ring and the outside of air supply pipe, air supply pipe and annular flow channel are communicated with each other, a plurality of communication holes are arranged on air supply pipe around annular flow channel, annular flow channel is communicated with air supply pipe through a plurality of communication holes respectively, the present application realizes the sufficient mixing of gas and air, greatly improves the combustion efficiency, reduces the incomplete combustion and the pollution such as carbon black, thereby reduces the overall energy consumption, and reduces the pollution to glass.

Description

Technical Field

[0001] This invention relates to the field of drying, and discloses a crushed glass drying system. Background Technology

[0002] In the recycling and reuse process of broken glass, the surface of the cleaned broken glass often retains moisture and alkaline cleaning agents. If it is directly put into the melting furnace without being fully dried, the residual moisture will vaporize at high temperature, consuming a large amount of extra heat energy, resulting in a significant increase in the energy consumption of the melting furnace. At the same time, the alkali metal ions in the cleaning agent will disrupt the composition balance during the glass melting process, causing glass defects such as bubbles, streaks, and stones, which seriously affect the quality and yield of recycled glass.

[0003] Currently, the industry commonly uses gas-fired drying equipment for preheating and dehydrating sharded glass. However, most current gas-fired drying equipment uses a fixed preset air-fuel ratio for combustion control. When the air-fuel ratio is set too low, the fuel cannot burn completely due to insufficient oxygen, producing large amounts of carbon monoxide and soot. This not only drastically reduces thermal efficiency but also contaminates the surface of the sharded glass. Conversely, when the air-fuel ratio is too high, excess air carries away a significant amount of heat, increasing exhaust heat loss and also reducing thermal utilization. Therefore, there is an urgent need for a sharded glass drying system that can better improve the efficiency of gas-air mixing and combustion. Summary of the Invention

[0004] The purpose of this invention is to provide a broken glass drying system to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] A shard glass drying system according to a first aspect of the present invention includes: The casing has an internal drying channel. The drying mechanism includes a first fan, an air supply pipe, a gas supply pipe, and a combustion chamber. The air supply pipe is connected to the first fan, which enables an airflow to form within the air supply pipe and flow towards the combustion chamber. The combustion chamber is interconnected with the drying channel. One end of the gas supply pipe is provided with a gas supply ring, which is sleeved on the outside of the air supply pipe. An annular flow channel is formed between the gas supply ring and the outside of the air supply pipe. The gas supply pipe is interconnected with the annular flow channel. The gas supply pipe has multiple connecting holes around the annular flow channel, and the annular flow channel is connected to the gas supply pipe through the multiple connecting holes. The drying mechanism has multiple such holes along the length of the drying channel.

[0006] This technical solution has at least the following beneficial effects: The gas supply pipe is used to connect to an external gas source, which sends the broken glass to be dried into the drying channel and transports it along the length of the drying channel. While the broken glass is moving inside the drying channel, hot air is introduced into the drying channel by the drying mechanism. Specifically, the gas supplied to the gas supply pipe flows into the annular flow channel. The first fan operates, causing an airflow towards the combustion chamber to form within the gas supply pipe. When the combustion air passes through multiple connecting holes, it carries the gas from these holes into the gas supply pipe, thus improving the combustion process. The combustion air and gas are evenly mixed at multiple points. By controlling the power of the first fan, the intake volume of the combustion air can be adjusted. As the intake volume of the combustion air increases, the amount of gas mixed into the air supply pipe also increases, which is conducive to achieving proportional control and adjustment of combustible gas and combustion air. Multiple drying units are arranged along the drying channel, which can uniformly and segmentally heat and dry the broken glass. This achieves full mixing of gas and air, greatly improves combustion efficiency, reduces incomplete combustion and pollution such as carbon black, thereby reducing overall energy consumption and reducing pollution to the glass.

[0007] According to some embodiments of the present invention, the air supply duct is provided with a narrowing section, a throat section and a diffuser section connected in sequence. The inner diameter of the narrowing section decreases towards the throat section, and the inner diameter of the diffuser section increases away from the throat section. The diffuser section is connected to the combustion chamber. A plurality of the connecting holes are arranged around the throat section, and the air supply ring is sleeved on the outside of the throat section.

[0008] According to some embodiments of the present invention, a plurality of the communicating holes are inclined along the direction close to the diffusion section, and one end of the plurality of communicating holes is tangentially connected to the throat section.

[0009] According to some embodiments of the present invention, the inner diameter of the plurality of communicating holes decreases in the direction close to the throat segment. According to some embodiments of the present invention, the present invention further includes a return air pipe and a second fan, the second fan being connected to the return air pipe, one end of the return air pipe being connected to the drying channel, and the other end of the return air pipe passing through the narrowing section and the throat section and extending into the diffusion section, the second fan enabling an airflow to be formed in the return air pipe from the drying channel to the diffusion section.

[0010] According to some embodiments of the present invention, an oxygen sensor is provided in the combustion chamber, the oxygen sensor is used to detect the oxygen concentration in the combustion chamber, and the second fan can adjust the air flow rate entering the diffusion section according to the oxygen concentration detected by the oxygen sensor.

[0011] According to some embodiments of the present invention, the air supply ring includes two arc-shaped rims, one end of each of the two arc-shaped rims is formed with a connector, the other end of each of the two arc-shaped rims is formed with an arc-shaped tube, the two arc-shaped rims abut against both sides of the air supply tube, the two arc-shaped rims and the outer side of the air supply tube form an annular flow channel, the two connectors are connected to each other, and the two arc-shaped tubes abut against and are inserted into one end of the air supply tube.

[0012] According to some embodiments of the present invention, a guide mating surface is formed on the inner side of one end of the air supply pipe, and the inner diameter of the guide mating surface gradually decreases towards the other end of the air supply pipe, and the shapes of the two arc-shaped pipes are respectively adapted to the shape of the guide mating surface. According to some embodiments of the present invention, the drying channel includes a first zone, a second zone, and a third zone connected in sequence. The drying mechanism is respectively provided in the first zone, the second zone, and the third zone. The airflow in the air supply pipe located in the first zone is a first flow rate, the airflow in the air supply pipe located in the second zone is a second flow rate, and the airflow in the air supply pipe located in the third zone is a third flow rate. The first flow rate, the second flow rate, and the third flow rate decrease sequentially. According to some embodiments of the present invention, the combustion chamber is connected in parallel with at least two diversion pipes, and the at least two diversion pipes are respectively connected to both sides of the drying channel.

[0013] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of the present invention, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0015] Figure 1 This invention relates to a broken glass drying system.

[0016] Figure 2 This is a schematic diagram of the air supply pipe, gas supply pipe and internal structure of the combustion chamber of the present invention.

[0017] In the attached diagram: 100-casing, 210-first fan, 220-air supply duct, 221-narrowing section, 222-throat section, 223-diffuser section, 230-air supply duct, 231-connecting hole, 240-combustion chamber, 241-diverter pipe, 250-air supply ring, 251-arc-shaped rim, 252-connector, 253-arc-shaped pipe, 310-return duct, 320-second fan. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0020] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0022] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] In the description of this application, the use of terms such as "one embodiment," "some embodiments," "an example," "some instances," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] Reference Figure 1 and Figure 2 According to a first aspect of the present invention, a broken glass drying system includes a housing 100 and a drying mechanism, wherein a drying channel is formed inside the housing 100; the drying mechanism includes a first fan 210, an air supply duct 220, an air supply pipe 230, and a combustion chamber 240, wherein the air supply duct 220 is connected to the first fan 210, and the first fan 210 enables an airflow to be formed in the air supply duct 220 and flow towards the combustion chamber 240, the combustion chamber 240 being in communication with the drying channel; the air supply duct 230 is connected to the first fan 210 and the first fan 210 is capable of forming an airflow in the air supply duct 220 towards the combustion chamber 240. An air supply ring 250 is provided at one end of the air pipe 230. The air supply ring 250 is sleeved on the outside of the air supply pipe 220. An annular flow channel is formed between the air supply ring 250 and the outside of the air supply pipe 220. The air supply pipe 230 is connected to the annular flow channel. The air supply pipe 230 is provided with a plurality of connecting holes 231 around the annular flow channel. The annular flow channel is connected to the air supply pipe 230 through the plurality of connecting holes 231. The drying mechanism is provided with a plurality of such mechanisms along the length of the drying channel.

[0025] As described above, the gas supply pipe 230 is used to connect to an external gas source, sending the broken glass to be dried into the drying channel and conveying it along the length of the drying channel. While the broken glass is moving within the drying channel, hot air is introduced into the drying channel by the drying mechanism. Specifically, the gas supplied to the gas supply pipe 230 flows into the annular flow channel. The first fan 210 operates, causing an airflow to form within the air supply pipe 220, flowing towards the combustion chamber 240. When the combustion air passes through the multiple connecting holes 231, it carries the gas through the multiple connecting holes 231 into the air supply pipe 220. This allows the combustion air and gas to mix evenly at multiple points. By controlling the power of the first fan 210, the intake volume of the combustion air can be adjusted. As the intake volume of the combustion air increases, the amount of gas mixed into the air supply pipe 220 also increases, which is conducive to achieving proportional control and adjustment of combustible gas and combustion air. Multiple drying units are arranged along the drying channel, which can uniformly and segmentally heat and dry the broken glass. This achieves full mixing of gas and air, greatly improves combustion efficiency, reduces incomplete combustion and the generation of pollutants such as carbon black, thereby reducing overall energy consumption and reducing pollution to the glass.

[0026] The gas and air are burned in the combustion chamber 240. It is understood that a burner is installed in the combustion chamber 240 for intermittent or continuous ignition.

[0027] To improve the effect of airflow inside the air supply duct 220 on gas intake, in this embodiment, the air supply duct 220 is provided with a narrowing section 221, a throat section 222, and a diffuser section 223 connected in sequence. The inner diameter of the narrowing section 221 decreases towards the throat section 222, and the inner diameter of the diffuser section 223 increases away from the throat section 222. The diffuser section 223 is connected to the combustion chamber 240, and a plurality of connecting holes 231 are arranged around the throat section 222. The air supply ring 250 is sleeved on the outside of the throat section 222. When the airflow passes through the narrowing section 221, the reduced inner diameter of the narrowing section 221 increases the flow velocity, forming a high-speed, low-pressure zone in the throat section 222. This draws the gas into the throat section 222 through multiple connecting holes 231 and premixes it with the air. Subsequently, the gas enters the diffuser section 223, where the gas and air enter the diffuser section 223 with its increased inner diameter. In the diffuser section 223, the diffused gas and air are further mixed, effectively improving the mixing effect of the gas and air. This enhances the negative pressure suction formed by the combustion-supporting airflow during the intake flow, thereby ensuring the gas supply and making the overall combustion more complete.

[0028] Understandably, by setting the number and size of the multiple connecting holes 231, the ratio of gas supply to combustion air supply can be adjusted to achieve the desired air-fuel ratio. When the combustion air supply increases, the amount of gas drawn in also increases; when the combustion air supply decreases, the amount of gas drawn in also decreases.

[0029] When the combustion gas enters the throat section 222, it can be injected vertically into the high-speed airflow. However, due to the high velocity of the combustion air, the penetration depth of the combustion gas within the airflow is limited, resulting in insufficient mixing. Therefore, to further improve the mixing efficiency of the combustion gas and the combustion air, the combustion gas can be introduced into the high-speed airflow in a swirling manner. Specifically, multiple connecting holes 231 are inclined along the direction close to the diffuser section 223, and one end of each connecting hole 231 is tangentially connected to the throat section 222. This inclined and tangential arrangement allows the combustion gas to be injected into the high-speed airflow of the throat section 222 in a rotating manner, forming a strong swirling mixture. This further increases the contact area and turbulence intensity between the combustion gas and air, enabling uniform mixing over a shorter distance, thereby further improving combustion efficiency and flame stability.

[0030] To further increase the velocity of the gas ejected from the connecting holes 231, ensuring sufficient speed for the gas to penetrate the airflow, in this embodiment, the inner diameter of the plurality of connecting holes 231 decreases along the direction close to the throat section 222. This tapered structure increases the gas velocity at the outlet, giving the jet higher kinetic energy and enabling it to penetrate the high-speed airflow more deeply, achieving a more uniform mixture. This is particularly suitable for high-velocity, high-flow-rate conditions, effectively avoiding localized areas of rich or lean combustion.

[0031] The exhaust gas discharged from the drying channel contains a large amount of residual heat and unburned combustible components. Direct emission of this gas results in energy waste. To improve heat utilization, in this embodiment, the invention further includes a return gas pipe 310 and a second fan 320. The second fan 320 is connected to the return gas pipe 310. One end of the return gas pipe 310 is connected to the drying channel, and the other end passes through the narrowing section 221, the throat section 222, and extends into the diffuser section 223. The second fan 320 enables an airflow to form within the return gas pipe 310, flowing from the drying channel to the diffuser section 223. During drying, the second fan 320 can also be turned on, causing an airflow to form within the return gas pipe 310, flowing from the drying channel to the diffuser section 223, and drawing some of the exhaust gas back to the combustion chamber 240. When the exhaust gas passes through the throat section 222 and the diffuser section 223, it can heat the fuel gas and combustion air, allowing them to reach the combustion temperature more quickly. By adjusting the operating power of the second fan 320, the amount of air returning from the drying channel through the return air pipe 310 can be adjusted. This utilization of waste gas recirculation achieves waste heat recovery and the re-combustion of unburned components, significantly improving the overall thermal efficiency of the system. Simultaneously, the waste gas dilutes the oxygen concentration in the combustion chamber 240, reducing the peak flame temperature and helping to suppress the formation of nitrogen oxides, thus achieving energy saving and emission reduction.

[0032] The exhaust gas recirculation flow rate needs to be dynamically adjusted according to the combustion state. In this embodiment, an oxygen sensor is installed in the combustion chamber 240 to detect the oxygen concentration within the combustion chamber 240. The second fan 320 can adjust the gas flow rate entering the diffuser section 223 based on the oxygen concentration detected by the oxygen sensor. Closed-loop control of the exhaust gas recirculation flow rate is achieved through oxygen concentration feedback, ensuring that the air-fuel ratio in the combustion chamber 240 is always maintained within the optimal range. This automatically adapts to fluctuations in the calorific value of the fuel gas and changes in the moisture content of the broken glass, helping to ensure the system operates at high efficiency and low emissions over the long term.

[0033] The air supply ring 250 needs to be easy to install and disassemble. Since the air supply ring 250 needs to be fitted onto the outside of the throat section 222 with a smaller inner diameter, in this embodiment, the air supply ring 250 includes two arc-shaped rims 251. One end of each of the two arc-shaped rims 251 is formed with a connector 252, and the other end of each of the two arc-shaped rims 251 is formed with an arc-shaped tube 253. The two arc-shaped rims 251 abut against both sides of the air supply pipe 220, and the two arc-shaped rims 251 and the outside of the air supply pipe 220 form an annular flow channel. The two connectors 252 are connected to each other, and the two arc-shaped tubes 253 abut against and are inserted into one end of the air supply pipe 230. The split structure allows the air supply ring 250 to be easily fitted onto the air supply duct 220 without needing to be inserted from the end of the air supply duct 230, improving the convenience of installation and maintenance. After connecting the connectors 252 at one end of the two arc-shaped edges 251 to each other, the two arc-shaped edges 251 can be initially fixed to the outside of the air supply duct 220. At this time, the arc-shaped tubes 253 at the other end of the two arc-shaped edges 251 close together to form a complete tube, which can be connected with the air supply duct 230.

[0034] To improve the ease of connection between the air supply pipe 230 and the two arc-shaped ferrules 251, in this embodiment, a guide mating surface is formed on the inner side of one end of the air supply pipe 230. The inner diameter of the guide mating surface gradually decreases towards the other end of the air supply pipe 230, and the shapes of the two arc-shaped pipes 253 are respectively adapted to the shapes of the guide mating surfaces. The guide mating surfaces are tapered, which allows the guide mating structure to play a self-centering guiding role when the arc-shaped pipes 253 are inserted, enabling the arc-shaped pipes 253 to automatically align and making installation easier and more accurate. At the same time, the tapered guide mating surfaces have a good sealing effect when in contact with the two arc-shaped pipes 253, further enhancing the leak-proof capability.

[0035] During the drying process, the moisture content of broken glass gradually decreases, and the heat required at different stages varies. In this embodiment, the drying channel includes a first zone, a second zone, and a third zone connected in sequence. The drying mechanism is respectively installed in the first zone, the second zone, and the third zone. The airflow rate in the air supply duct 220 located in the first zone is the first flow rate, the airflow rate in the air supply duct 220 located in the second zone is the second flow rate, and the airflow rate in the air supply duct 220 located in the third zone is the third flow rate. The first flow rate, the second flow rate, and the third flow rate decrease sequentially. When the broken glass enters the drying channel, it passes through the first, second, and third zones in sequence. The air supply duct 220 in the first zone has a large airflow, which can quickly heat up and dehydrate the broken glass in the first zone. The air supply duct 220 in the second zone has a medium airflow, which can maintain a stable drying atmosphere for the broken glass in the second zone. The air supply duct 220 in the third zone has a small airflow, which can dry the broken glass in the third zone while preventing the broken glass from cracking due to excessive temperature, thus better removing adsorbed water and significantly improving the thermal energy utilization efficiency and drying uniformity. To improve the uniformity of hot air entering the drying channel, in this embodiment, the combustion chamber 240 is connected in parallel with at least two diversion pipes 241, which are respectively connected to both sides of the drying channel. Dual-sided air intake ensures that the hot flue gas is evenly distributed across the cross-section of the drying channel, helping to prevent overheating in the central area and underheating at the edges, thus ensuring more consistent drying of the broken glass in the width direction and improving the overall drying effect.

[0036] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A broken glass drying system, characterized in that: include: The casing (100) has a drying channel enclosed inside; The drying mechanism includes a first fan (210), an air supply pipe (220), an air supply pipe (230), and a combustion chamber (240). The air supply pipe (220) is connected to the first fan (210). The first fan (210) enables an airflow to form within the air supply pipe (220) and flow towards the combustion chamber (240). The combustion chamber (240) is interconnected with the drying channel. One end of the air supply pipe (230) is provided with an air supply ring (250). 50) The air supply ring (250) is sleeved on the outside of the air supply pipe (220). An annular flow channel is formed between the air supply ring (250) and the outside of the air supply pipe (220). The air supply pipe (230) is connected to the annular flow channel. The air supply pipe (230) is provided with multiple connecting holes (231) around the annular flow channel. The annular flow channel is connected to the air supply pipe (230) through the multiple connecting holes (231). The drying mechanism is provided with multiple holes along the length of the drying channel.

2. The cullet drying system according to claim 1, characterized in that: The air supply duct (220) is provided with a narrowing section (221), a throat section (222), and a diffuser section (223) connected in sequence. The inner diameter of the narrowing section (221) is reduced towards the throat section (222), and the inner diameter of the diffuser section (223) is expanded away from the throat section (222). The diffuser section (223) is connected to the combustion chamber (240). A plurality of connecting holes (231) are arranged around the throat section (222), and the air supply ring (250) is sleeved on the outside of the throat section (222).

3. The cullet drying system according to claim 2, characterized in that: The plurality of the connecting holes (231) are inclined in the direction close to the diffuser section (223), and one end of the plurality of the connecting holes (231) is tangentially connected to the throat section (222).

4. The cullet drying system according to claim 3, characterized in that: The inner diameter of the plurality of the connecting holes (231) decreases in the direction close to the throat section (222).

5. The cullet drying system according to claim 2, characterized in that: It also includes a return air pipe (310) and a second fan (320), the second fan (320) being connected to the return air pipe (310), one end of the return air pipe (310) being connected to the drying channel, and the other end of the return air pipe (310) passing through the narrowing section (221), the throat section (222), and extending into the diffuser section (223), the second fan (320) enabling the formation of an airflow from the drying channel to the diffuser section (223) within the return air pipe (310).

6. The cullet drying system according to claim 5, characterized in that: An oxygen sensor is installed in the combustion chamber (240) to detect the oxygen concentration in the combustion chamber (240). The second fan (320) can adjust the air flow rate entering the diffuser section (223) according to the oxygen concentration detected by the oxygen sensor.

7. The cullet drying system according to claim 1, characterized in that: The air supply ring (250) includes two arc-shaped rims (251), one end of each of the two arc-shaped rims (251) is formed with a connector (252), and the other end of each of the two arc-shaped rims (251) is formed with an arc-shaped tube (253). The two arc-shaped rims (251) abut against the two sides of the air supply pipe (220), and the two arc-shaped rims (251) and the outer side of the air supply pipe (220) form the annular flow channel. The two connectors (252) are connected to each other, and the two arc-shaped tubes (253) abut against each other and are inserted into one end of the air supply pipe (230).

8. The cullet drying system according to claim 7, characterized in that: A guide mating surface is formed on the inner side of one end of the air supply pipe (230). The inner diameter of the guide mating surface gradually decreases towards the other end of the air supply pipe (230). The shapes of the two arc-shaped pipes (253) are respectively adapted to the shapes of the guide mating surfaces.

9. The cullet drying system according to claim 1, characterized in that: The drying channel includes a first zone, a second zone, and a third zone connected in sequence. The drying mechanism is respectively provided in the first zone, the second zone, and the third zone. The air flow rate in the air supply pipe (220) located in the first zone is the first flow rate, the air flow rate in the air supply pipe (220) located in the second zone is the second flow rate, and the air flow rate in the air supply pipe (220) located in the third zone is the third flow rate. The first flow rate, the second flow rate, and the third flow rate decrease sequentially.

10. The cullet drying system according to claim 1, characterized in that: The combustion chamber (240) is connected in parallel with at least two diversion pipes (241), and the at least two diversion pipes (241) are respectively connected to both sides of the drying channel.

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