Precise control system for glass product material channel

Abstract

The invention discloses a glass product material channel accurate control system which comprises a material channel used for conveying molten glass, a heat supply mechanism and a cooling mechanism, the material channel is sequentially provided with a rear cooling section, a front cooling section, a homogenizing section and a material basin section in the conveying direction of the molten glass, and the homogenizing section is divided into a left homogenizing section and a right homogenizing section; the rear cooling section, the front cooling section, the left homogenizing section, the right homogenizing section and the material basin section are respectively provided with a heat supply mechanism for independently supplying heat, the rear cooling section and the front cooling section are respectively provided with a cooling mechanism, and the heat supply mechanisms arranged on the rear cooling section and the front cooling section can cooperatively work with the corresponding cooling mechanisms. By controlling the temperature of different sections, namely the rear cooling section, the front cooling section, the left homogenizing section, the right homogenizing section and the material basin section, the temperature uniformity of molten glass in the flowing process of the material channel is ensured. By controlling the temperature of different sections, the uniformity of the temperature of the molten glass in the flowing process of the material channel can be effectively ensured, and long-term stable molten glass is provided for the subsequent process.

Description

Technical Field

[0001] The present invention relates to the technical field of glass product preparation, and particularly to a precise control system for a glass product channel Background Art

[0002] The channel is a pipeline made of refractory materials, through which the molten glass liquid flows from the working area of the furnace to the forming machine. The molten glass liquid flowing out of the furnace needs to be cooled controllably, so that the temperature of the molten glass liquid from top to bottom and from both sides to the middle reaches consistency. However, when the molten glass liquid flows in the channel groove bricks, the molten glass liquid contacts the inner wall of the refractory brick, and its temperature will inevitably decrease, and the flow will also slow down accordingly. The molten glass liquid in the middle flows fast and the temperature is also higher than that on both sides, thus generating phenomena such as backflow, vortex, and stagnant material on both sides of the channel, resulting in a temperature difference in the horizontal direction.

[0003] At present, global resources are becoming less and less, and the international and domestic glass product markets are in a transformation stage. The demand for lightweight glass products is increasing continuously. Lightweight puts forward higher and more stable requirements for the temperature of the molten glass liquid. Therefore, the requirements for the precise control of the molten glass liquid inside the channel and the temperature uniformity of the molten glass liquid in the basin are getting higher and higher. Most of the existing channels adopt gas heating methods, but they do not analyze the characteristics of the molten glass liquid flowing inside the channel. They only heat the air in the upper space of the molten glass liquid by flames and do not know how to adjust the temperature values of the molten glass liquid in the left, middle, right, upper, middle, and lower parts. The temperature of the molten glass liquid entering the basin inside the channel is extremely uneven, resulting in poor stability of the glass liquid droplets at the outlet of the basin. Especially when there are multiple droplets, there are various defects such as different lengths, shapes, and weights of the droplets, resulting in many defects in the glass products produced by subsequent equipment and a low qualified product rate. Summary of the Invention

[0004] The purpose of the present invention is to provide a precise control system for a glass product channel, which effectively solves the problems of large temperature deviation and low uniformity of the cross-section of the molten glass liquid at the inlet of the basin of the gas channel.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A precise control system for a glass product channel of the present invention includes a channel for transporting molten glass, a heating mechanism, and a cooling mechanism. The channel is sequentially provided with a post-cooling section, a pre-cooling section, a homogenizing section, and a pot section along the transport direction of the molten glass. The homogenizing section is divided into a left homogenizing section and a right homogenizing section. Independent heating mechanisms are installed on the post-cooling section, the pre-cooling section, the left homogenizing section, the right homogenizing section, and the pot section respectively. Cooling mechanisms are respectively provided on the post-cooling section and the pre-cooling section. The heating mechanisms installed on the post-cooling section and the pre-cooling section can cooperate with the corresponding cooling mechanisms. By controlling the temperatures of different sections of the post-cooling section, the pre-cooling section, the left homogenizing section, the right homogenizing section, and the pot section, the temperature uniformity of the molten glass during its flow in the channel is ensured.

[0007] Furthermore, the left homogenizing section and the right homogenizing section respectively regulate the temperature of the molten glass in their respective regions. The pre-cooling section and the post-cooling section are each internally divided into 3 regions, namely a left side region, a middle region, and a right side region. The heating mechanisms on both sides are responsible for adjusting the temperatures of the left side region and the right side region. The temperature of the middle region is reduced by the cooling mechanism, so as to heat the molten glass in the two side regions while reducing the temperature of the molten glass in the middle region. Through the adjustment capabilities of the pre-cooling section, the post-cooling section, the left homogenizing section, and the right homogenizing section, the adjustment and control of the molten glass are achieved.

[0008] Furthermore, the inner cavity inlet of the pot section is evenly divided into an upper left region, a left middle region, a lower left region, an upper middle region, a central region, a lower middle region, an upper right region, a right middle region, and a lower right region. The temperature of the upper left region is adjusted by the heating mechanism of the left homogenizing section. The temperature of the upper right region is adjusted by the heating mechanism of the right homogenizing section. The temperature of the upper middle region is adjusted by the temperature neutralization of the upper left region and the upper right region. The temperatures of the left middle region and the right middle region are adjusted by the heating mechanisms of the pre-cooling section. The temperature of the central region is adjusted by the cooling mechanism above the pre-cooling section. The temperatures of the lower left region and the lower right region are adjusted by the heating mechanisms of the post-cooling section. The temperature of the lower middle region is adjusted by the cooling mechanisms at the bottoms of the pre-cooling section and the post-cooling section.

[0009] Furthermore, the cooling mechanism includes an upper cooling mechanism located above the pipe wall and a lower cooling mechanism located below the pipe wall. The upper cooling mechanism and the lower cooling mechanism have the same structure. The upper cooling mechanism includes a cooling air duct, a cooling fan, and a nozzle. The cooling fan is connected to one end of the cooling air duct and conveys cold air to the cooling air duct. The nozzle is connected to the other end of the cooling air duct and communicates with the channel.

[0010] Further, the heating mechanism includes a gas supply mechanism for supplying gas to each heating mechanism and multiple premixed independent spray guns. The gas supply mechanism includes a gas channel for conveying gas and a compressed air channel for conveying compressed air. The gas and compressed air are supplied to each heating mechanism after adjusting the air-fuel ratio through a mixing pipeline, and the spray gun heats the material channel.

[0011] Still further, the mixing pipeline includes a main pipe, a first branch pipe communicated with the compressed air pipeline, and a second branch pipe communicated with the gas channel. A manual ball valve is installed on the first branch pipe, a proportional adjustment valve for adjusting the air-fuel ratio is installed on the second branch pipe, an electric actuator and a flow meter are installed on the main pipe. The electric actuator is installed at the bottom of the main pipe, the installation position of the flow meter is below the second branch pipe, and a gas mixer is provided at the top of the main pipe.

[0012] Further, it further includes an electric control system. The electric control system includes a central processing unit and a computer. Thermocouples for temperature acquisition are installed in the material basin section, the front cooling section, and the rear cooling section. The thermocouples are electrically connected to the central processing unit respectively. The thermocouples transmit the detected temperature information to the central processing unit and display it on the computer.

[0013] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0014] The precise control system for the glass product material channel of the present invention divides the material channel into a rear cooling section, a front cooling section, a left homogenization section, a right homogenization section, and a material basin section through different heating and cooling methods, and performs zoning control according to the flowing characteristics of the glass liquid. By controlling the temperature of different sections, it can effectively ensure the temperature uniformity of the glass liquid during the flowing process in the material channel, provide long-term stable glass liquid for the subsequent process, meet the lightweight production process, and improve the qualified rate of glass products. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of the precise control system for the glass product material channel of the present invention;

[0017] Figure 2 It is a schematic structural diagram of the cooling mechanism in the precise control system for the glass product material channel of the present invention;

[0018] Figure 3 It is a schematic structural diagram of a mixing pipeline in the precise control system of the glass product channel of the present invention;

[0019] Figure 4 It is a schematic structural diagram at the entrance of the basin section in the precise control system of the glass product channel of the present invention.

[0020] Explanation of reference numerals: 1, channel; 2, post-cooling section; 3, pre-cooling section; 4, homogenizing section; 5, basin section; 6, left homogenizing section; 7, right homogenizing section; 8, heating mechanism; 12, cooling air duct; 13, cooling fan; 14, air nozzle; 15, spray gun; 16, gas passage; 17, compressed air passage; 18, mixing pipeline; 19, main pipe; 20, first branch pipe; 21, second branch pipe; 22, manual ball valve; 23, proportional adjustment valve; 24, electric actuator; 25, flow meter; 26, gas mixer. Detailed implementation manners

[0021] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0023] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The technical solutions provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] As Figures 1 to 4 shown, the precise control system for the glass product channel in this embodiment includes a channel 1 for transporting molten glass, a heating mechanism 8, and a cooling mechanism. The channel 1 is sequentially divided into a post-cooling section 2, a pre-cooling section 3, a homogenizing section 4, and a pot section 5 along the transportation direction of the molten glass. The homogenizing section 4 is divided into a left homogenizing section 6 and a right homogenizing section 7. Among them, heating mechanisms 8 with independent heating are respectively installed on the post-cooling section 2, the pre-cooling section 3, the left homogenizing section 6, the right homogenizing section 7, and the pot section 5. Cooling mechanisms that cooperate with the heating mechanisms 8 installed thereon are also respectively provided on the post-cooling section 2 and the pre-cooling section 3.

[0026] Specifically, the cooling mechanisms located on the pre-cooling section 3 and the post-cooling section 2 have the same structure, and both include an upper cooling mechanism 10 located above the pipe wall of the pre-cooling section 3 or the post-cooling section 2 and a lower cooling mechanism 11 located below the pipe wall of the pre-cooling section 3 or the post-cooling section 2. Moreover, the upper cooling mechanism 10 and the lower cooling mechanism 11 have the same structure, and both include a cooling air duct 12, a cooling fan 13 connected to one end of the cooling air duct 12 and delivering cold air to the cooling air duct 12, and a nozzle 14 connected to the other end of the cooling air duct 12 and communicating with the channel 1.

[0027] Among them, the heating mechanism 8 is composed of multiple premixed independent spray guns 15, and heat is supplied to the channel 1 through the spray guns 15. Moreover, the heating mechanism 8 further includes an air supply mechanism for supplying air to each heating mechanism 8. Preferably, the air supply mechanism includes a gas channel 16 for transporting gas and a compressed air channel 17 for transporting compressed air. The gas and compressed air are supplied to each heating mechanism 8 after adjusting the air-fuel ratio through a mixing pipeline 18.

[0028] As Figure 3 shown, the mixing pipeline 18 includes a main pipe 19, a first branch pipe 20 communicating with the compressed air pipeline 17, and a second branch pipe 21 communicating with the gas channel 16. A manual ball valve 22 is installed on the first branch pipe 20, a ratio adjustment valve 23 for adjusting the air-fuel ratio is installed on the second branch pipe 21, an electric actuator 24 and a flow meter 25 are also installed on the main pipe 19. The electric actuator 24 is installed at the bottom of the main pipe 19, the installation position of the flow meter 25 is below the second branch pipe 21, and a gas mixer 26 is provided at the top of the main pipe 19. Through this structural arrangement, the disadvantages of unstable air-fuel ratio, low combustion efficiency, and high energy consumption in the traditional method are avoided.

[0029] In this embodiment, as Figure 4 shown, the inner cavity entrance of the pot section 5 is evenly divided into nine regions, including the upper left region, the left middle region, the lower left region, the middle upper region, the central region, the middle lower region, the upper right region, the right middle region, and the lower right region.

[0030] In addition, the precise control system for the glass product channel in this embodiment further includes an electric control system, which includes a central processor and a computer. Thermocouples for temperature acquisition are installed in the material basin section 5, the front cooling section 3, and the rear cooling section 2. The thermocouples are electrically connected to the central processor respectively. The thermocouples transmit the detected temperature information to the central processor and display it on the computer. When the temperature exceeds the upper temperature limit set by the central controller or is lower than the set lower temperature limit, it is displayed on the computer, and the corresponding heating mechanism 8 or cooling mechanism is controlled to work through the computer.

[0031] During the working process of the precise control system for the glass product channel in this embodiment, the heating mechanisms 8 on the front cooling section 3, the rear cooling section 2, the left homogenizing section 6, the right homogenizing section 7, and the material basin section 5 are all connected to a five-section air-gas mixing pipeline 18. The pipeline below the premixed frame is connected to a compressed air pipeline with a pressure of 7-10 Kpa and an electric actuator 24. The rear gas pipeline is connected to a gas with a pressure of 5-10 Kpa and a flow-type proportional adjustment valve 23. Among them, for each section, by controlling the opening and closing of the electric actuator 24 to control the single factor of the compressed air flow rate, and matching a flow-type proportional adjuster to proportion the corresponding proportion of gas (this proportion is called the air-fuel ratio and can be adjusted and locked) to form the mixed gas. When the flow rate is large, more gas is used; when the flow rate is small, less gas is used, but the air-fuel ratio remains unchanged. The efficient air-fuel ratio is the key factor for temperature control and also the basis for improving the combustion efficiency. In each section, the air and gas are mixed through four parts: the electric actuator 24, the proportional adjustment valve 23, the flow meter 25, and the gas mixer 26 to obtain a mixed gas with a constant air-fuel ratio.

[0032] The mixed gas inside the gas mixer 26 is transported by the main pipe 19 to each spray gun 15 in the heating area and sprayed into the channel 1. Since the temperature inside the channel 1 is higher than the ignition point of the mixed gas, the gas is instantly ignited and burned. The continuous combustion of the mixed gas releases heat to complete the heating and adjustment of the glass liquid. When the air flow rate is large, the heating amplitude is large; when the air flow rate is small, the heating amplitude is small. If the heating amplitude is not enough to offset the heat loss, the temperature of the glass liquid shows a downward trend characteristic. According to the temperature set by the production process, the detected temperature of the glass liquid is compared with the set temperature through the PID parameters, and the air flow rate is adjusted to finally control the temperature to be consistent with the set temperature.

[0033] At this time, according to the forming temperature of the glass product, the left and right homogenizing temperature values are first set, then the temperature value of the front cooling section 3, and then the temperature value of the rear cooling section 2, so as to realize the temperature adjustment of the glass liquid. The heating amount is quantified as 0-100%, and when the heating area is heating, the heating amount is controlled between 30-70%, so as to increase the adjustment ability for the glass liquid when the temperature difference of the glass liquid is large.

[0034] In addition, each section of the electric actuator 24 to the compressed air pipeline below is also equipped with a first branch pipe 20 pressure-limiting pipeline equipped with a manual ball valve 22. The minimum flow rate is set by the manual ball valve 22 to ensure that the internal pressure of the spray gun 15 is always greater than the internal pressure of the material channel 1 to prevent the danger of backfire. The internal pressure of the spray gun 15 is collected as close to the spray gun 15 as possible through the pressure-taking device. A pressure gauge and a transmitter are installed on the mixing pipeline 18 of each section to display the pressure in the corresponding section of the spray gun 15, and the pressure digital signal is sent to the central processor.

[0035] The temperature of the glass liquid inside the material channel 1 is distributed in an annular calorific value, and the temperature decreases from high to low from the inside to the outside. The top and bottom cooling air ducts 12 are laid in the longitudinal middle of the front cooling section 3 and the rear cooling section 2 to replace the skylight-type heat dissipation outlet, and are connected with the air nozzle 14, the air duct, and the fan to form a cooling mechanism. The magnitude of the cooling amplitude is inversely proportional to the amount of heat in the heating zone, that is, the cooling decreases when the heating increases, and the cooling increases when the heating decreases. There are many forms of collecting the amount of heating, such as collecting the output signal changes of the central processing unit heating, collecting the output voltage or current signal changes of the electric actuator 24, and collecting the internal pressure changes of the spray gun 15, which can indirectly reflect the changes in the heating amount. The heating amount is quantified as 0-100%, and the size setting value is between 30-60%, so that the cooling trend works at a low intermediate load, so that there is sufficient adjustment capability to cope with glass liquid with a large temperature difference.

[0036] Specifically, the electronic control system is composed of a central processing unit, an interface module, a frequency converter, and a computer, which replaces the traditional instrument control mode and solves the defects of no adjustment record, lack of intuitiveness, low control accuracy, and inability to save data. The central processing unit is responsible for processing all signal acquisition and controlling the electric actuator 24 and the frequency converter to complete the control work according to the set control conditions (temperature, heating amount, etc.). The computer is responsible for transmitting all setting data to the central processing unit and displaying and recording and storing all data.

[0037] Since the molten glass enters from the inlet of the forehearth 1 and flows through the cooling section 2 to the pot section 5, it belongs to a tumbling type with three layers of molten glass, namely the upper, middle, and lower layers, advancing alternately. By analyzing the flowing characteristics of the molten glass, the cross-section of the molten glass at the inlet of the pot section 5 is divided into 9 regions, namely the upper left part, the middle left part, the lower left part, the upper middle part, the middle middle part, the lower middle part, the upper right part, the middle right part, and the lower right part. Among them, 3 three-point embedded thermocouples are inserted on the left, middle, and right respectively to form 9-point temperature measurement. The temperature signals transmitted by the thermocouples are sent to the central processor, and the change of temperature values is visually and dynamically displayed on the computer monitor; 3 three-point embedded thermocouples are also inserted in the pre-cooling section 3 and the post-cooling section 2 to complete temperature acquisition. The temperature of the upper left part is adjusted by setting the temperature of the heating mechanism 8 in the left homogenization section 6, the temperature of the upper right part is adjusted by setting the temperature of the heating mechanism 8 in the right homogenization section 7, the temperature of the upper middle part is adjusted by neutralizing the temperatures of the upper left part and the upper right part, the temperatures of the middle left part and the middle right part are adjusted by setting the temperature of the heating mechanism 8 in the pre-cooling section 3, the middle temperature is adjusted by setting the magnitude of the cooling air volume at the upper part of the pre-cooling section 3, the temperatures of the lower left part and the lower right part are adjusted by setting the temperature of the heating mechanism 8 in the post-cooling section, and the temperature of the lower middle part is adjusted by setting the magnitude of the cooling air volume at the bottom of the pre-cooling section 3 and the post-cooling section 2. Operate according to the adjustment range that the cooling proportion in the post-cooling section 2 is 60% and the cooling amplitude in the pre-cooling section is 25%.

[0038] In addition, the left homogenization section 6 and the right homogenization section 7 respectively control the temperature of the molten glass in their respective regions. The pre-cooling section 3 and the post-cooling section 2 are respectively divided into 3 regions, namely the left side region, the middle region, and the right side region. The heating mechanisms 8 on both sides are responsible for adjusting the temperatures of the left side region and the right side region. The middle region reduces the middle temperature of the molten glass through cooling air, realizing heating the molten glass in the two side regions while reducing the temperature of the molten glass in the middle region. Through the strong adjustment capabilities of the pre-cooling section 3, the post-cooling section 2, the left homogenization section 6, and the right homogenization section 7, and the precise adjustment and control of the molten glass, the temperature uniformity of the molten glass in the 9 regions of the cross-section at the inlet of the pot is very high and stable for a long time. The heating amount in the pot area is controlled between 20 - 40% to offset the heat loss, thereby providing long-term stable molten glass for the subsequent glass product process and meeting the long-term and efficient lightweight production.

[0039] It should be noted that the parts not detailed in this embodiment are prior art.

[0040] The precise control system for the glass product forehearth of the present invention divides the forehearth into a post-cooling section, a pre-cooling section, a left homogenization section, a right homogenization section, and a pot section through different heating and cooling methods, and conducts zoning control according to the flowing characteristics of the molten glass. By controlling the temperatures of different sections, it can effectively ensure the temperature uniformity of the molten glass during the flowing process in the forehearth, provide long-term stable molten glass for the subsequent process, meet the lightweight production process, and improve the qualified product rate of glass products.

[0041] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A precise control system for a glass product channel, characterized in that, It includes a forehearth (1) for conveying molten glass, a heating mechanism (8), and a cooling mechanism. The forehearth (1) is sequentially provided with a post-cooling section (2), a pre-cooling section (3), a homogenizing section (4), and a pot section (5) along the conveying direction of the molten glass. The homogenizing section (4) is divided into a left homogenizing section (6) and a right homogenizing section (7). Independent heating heating mechanisms (8) are respectively installed on the post-cooling section (2), the pre-cooling section (3), the left homogenizing section (6), the right homogenizing section (7), and the pot section (5). Cooling mechanisms are respectively provided on the post-cooling section (2) and the pre-cooling section (3). The heating mechanisms (8) installed on the post-cooling section (2) and the pre-cooling section (3) can work in coordination with the corresponding cooling mechanisms. By controlling the temperatures of different sections of the post-cooling section (2), the pre-cooling section (3), the left homogenizing section (6), the right homogenizing section (7), and the pot section (5), the temperature uniformity of the molten glass during its flow in the forehearth (1) is ensured.

2. The precise control system for the glass product channel according to claim 1, characterized in that, The left homogenizing section (6) and the right homogenizing section (7) respectively regulate the temperature of the molten glass in their respective regions. The pre-cooling section (3) and the post-cooling section (2) are respectively divided into 3 regions, namely the left side region, the middle region, and the right side region. The heating mechanisms (8) on both sides are responsible for adjusting the temperatures of the left side region and the right side region. The temperature of the middle region is reduced by the cooling mechanism in the middle region, achieving the simultaneous heating of the molten glass in the two side regions and the reduction of the temperature of the molten glass in the middle region. Through the adjustment capabilities of the pre-cooling section (3), the post-cooling section (2), the left homogenizing section (6), and the right homogenizing section (7), the adjustment and control of the molten glass are achieved.

3. The precise control system for the glass product channel according to claim 1, characterized in that, The inner cavity inlet of the pot section (5) is evenly divided into an upper left area, an upper middle area, a lower left area, an upper middle area, a central area, a lower middle area, an upper right area, a right middle area, and a lower right area. The temperature of the upper left area is adjusted by the heating mechanism (8) of the left homogenizing section (6). The temperature of the upper right area is adjusted by the heating mechanism (8) of the right homogenizing section (7). The temperature of the upper middle area is adjusted by the temperature neutralization of the upper left area and the upper right area. The temperatures of the left middle area and the right middle area are adjusted by the heating mechanism (8) of the pre-cooling section (3). The temperature of the central area is adjusted by the cooling mechanism above the pre-cooling section (3). The temperatures of the lower left area and the lower right area are adjusted by the heating mechanism (8) of the post-cooling section (2). The temperature of the lower middle area is adjusted by the cooling mechanisms at the bottoms of the pre-cooling section (3) and the post-cooling section (2).

4. The precise control system for the glass product channel according to claim 1, characterized in that, The temperature reduction mechanism includes an upper temperature reduction mechanism located above the pipe wall and a lower temperature reduction mechanism located below the pipe wall. The upper temperature reduction mechanism and the lower temperature reduction mechanism have the same structure. The upper temperature reduction mechanism includes a temperature reduction air duct (12), a temperature reduction fan (13), and an air nozzle (14). The temperature reduction fan (13) is connected to one end of the temperature reduction air duct (12) and conveys cold air to the temperature reduction air duct. The air nozzle (14) is connected to the other end of the temperature reduction air duct (12) and communicates with the material duct (1).

5. The precision control system for the glass product channel according to claim 1, wherein, The heating mechanism (8) includes a gas supply mechanism for supplying gas to each heating mechanism (8) and multiple premixed independent spray guns (15). The gas supply mechanism includes a gas channel (16) for conveying gas and a compressed air channel (17) for conveying compressed air. The gas and compressed air are supplied to each heating mechanism (8) after adjusting the air-fuel ratio through a mixing pipe (18). The spray gun (15) heats the material duct (1).

6. The precise control system for the glass product channel according to claim 5, wherein The mixing pipe (18) includes a main pipe (19), a first branch pipe (20) communicating with the compressed air pipe (17), and a second branch pipe (21) communicating with the gas channel (16). A manual ball valve (22) is installed on the first branch pipe (20). A ratio adjustment valve (23) for adjusting the air-fuel ratio is installed on the second branch pipe (21). An electric actuator (24) and a flow meter (25) are installed on the main pipe (19). The electric actuator (24) is installed at the bottom of the main pipe (19). The installation position of the flow meter (25) is below the second branch pipe (21). A gas mixer (26) is provided at the top of the main pipe (19).

7. A precise control system for a glass product channel according to any one of claims 1-6, characterized in that, It further includes an electric control system. The electric control system includes a central processor and a computer. Thermocouples for temperature acquisition are installed in the material basin section (5), the front cooling section (3), and the rear cooling section (2). The thermocouples are electrically connected to the central processor respectively. The thermocouples transmit the detected temperature information to the central processor and display it on the computer.

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