Energy-saving glass blowing forming machine and using method thereof

Abstract

The invention discloses an energy-saving glass blowing forming machine and a using method thereof, and relates to the technical field of glass production, and the method comprises the specific steps of early-stage preparation, preheating starting, forming processing, waste heat utilization, finished product shaping and closed-loop optimization. Through the design of the three stages of waste heat recovery modules, efficient gradient utilization of waste heat in the glass blowing forming process is achieved, the energy utilization rate is increased, and a high-temperature loop directly recovers high-temperature flue gas discharged by the mold assembly through a directional guide pipe and is used for initial heating of the raw material preheating bin; the medium-temperature loop introduces cooled flue gas into a heat conduction oil heat exchanger through a flue gas guide pipe to exchange heat with heat conduction oil, the heated heat conduction oil continuously supplies energy to a constant-temperature unit of the mold assembly through a heat preservation oil storage tank, and the temperature stability in the forming process is ensured; the low-temperature loop introduces the tail gas subjected to heat exchange into a base heat preservation layer, auxiliary heat preservation is provided for the operation table, and heat loss is further reduced.

Description

Technical Field

[0001] This invention relates to the field of glass production technology, specifically to an energy-saving glass blowing machine and its usage method. Background Technology

[0002] Glass blowing is a key process in the glass manufacturing industry, widely used in construction, automobiles, daily necessities and other industries. Its core process includes raw material preheating, melting, blowing and shaping and annealing. It requires heating the glass raw material at high temperature to melt it, then blowing it into a specific shape through a mold, and finally annealing to eliminate internal stress. In this process, a large amount of high-temperature waste heat is generated in the mold components, melting pool and annealing furnace. If it is not effectively recovered and utilized, it will not only cause energy waste, but also increase the heat load on the production environment.

[0003] However, traditional glass blowing molding equipment often uses a single-stage recovery design for waste heat recovery, recovering only a portion of the high-temperature flue gas through a simple heat exchanger, while the remaining medium and low-temperature waste heat is directly discharged, resulting in low comprehensive utilization of waste heat. At the same time, traditional equipment lacks dynamic control capabilities, and waste heat distribution relies on fixed valve openings, making it impossible to adjust the heat distribution ratio of high-temperature, medium-temperature, and low-temperature circuits according to real-time operating conditions. This leads to insufficient or excessive preheating of the mold, affecting molding stability. In terms of temperature control, traditional equipment often uses open-loop control or single-node feedback, which cannot cover the temperature data of the entire process of raw material preheating, melting, molding, and annealing, resulting in large temperature fluctuations in the mold cavity and a high product defect rate.

[0004] Therefore, an energy-saving glass blowing machine and its usage method are to be developed. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an energy-saving glass blowing machine and its usage method. This invention achieves efficient tiered utilization of waste heat during the glass blowing process through a three-stage waste heat recovery module design, improving energy efficiency. The high-temperature circuit directly recovers the high-temperature flue gas discharged from the mold assembly through a directional conduit for initial heating of the raw material preheating chamber, reducing external energy input. The medium-temperature circuit uses a flue gas conduit to introduce the cooled flue gas into a heat transfer oil heat exchanger for heat exchange with the heat transfer oil. The heated heat transfer oil continuously supplies energy to the constant temperature unit of the mold assembly through an insulated oil storage tank, ensuring temperature stability during the molding process. The low-temperature circuit introduces the exhaust gas after heat exchange into the base insulation layer to provide auxiliary insulation for the operating table, further reducing heat loss. Furthermore, through a multi-circuit waste heat dynamic distribution control algorithm, the opening of the flow guide valves in each circuit is optimized in real time, maximizing waste heat recovery efficiency.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: In one aspect, an energy-saving glass blowing machine, the equipment comprising:

[0007] Glass finished product manufacturing module: including raw material preheating chamber, melting pool, forming machine body and annealing furnace, wherein the melting pool is located between the raw material preheating chamber and the forming machine body, and the annealing furnace is located at the end of the material picking path of the forming machine body;

[0008] The three-stage waste heat recovery module includes a high-temperature circuit, a medium-temperature circuit, and a low-temperature circuit connected in series. The high-temperature circuit includes a directional conduit. The medium-temperature circuit includes a flue gas conduit, a heat transfer oil conduit, a heat transfer oil heat exchanger, an insulated oil storage tank, and a temperature compensation unit. The low-temperature circuit includes an insulated conduit and a base insulation layer.

[0009] Intelligent control module: includes temperature sensor, flow guide valve and controller. The temperature sensor is arranged at key nodes of glass product manufacturing module and three-stage waste heat recovery module. The flow guide valve is respectively set on the directional duct, flue gas duct and heat preservation duct of high temperature circuit, medium temperature circuit and low temperature circuit. The controller is electrically connected to the temperature sensor, flow guide valve and the execution component of glass product manufacturing module.

[0010] Furthermore, in the three-stage waste heat recovery module, the main body of the molding machine is connected to the raw material preheating chamber through a directional conduit. The raw material preheating chamber is connected to the heat transfer oil heat exchanger through a flue gas conduit. The heat transfer oil heat exchanger is connected to the insulated oil storage tank through a heat transfer oil conduit. The insulated oil storage tank is connected to the constant temperature unit of the main body of the molding machine through another heat transfer oil conduit. The temperature compensation unit is set on the heat transfer oil conduit between the heat transfer oil heat exchanger and the insulated oil storage tank. The heat transfer oil heat exchanger is connected to the base insulation layer through an insulation conduit.

[0011] Furthermore, in the intelligent control module, the key nodes of the glass finished product manufacturing module include the raw material inlet and outlet of the raw material preheating chamber, the inside of the melting pool, the inside of the mold assembly cavity of the forming machine body, and the inlet and outlet of the annealing furnace; the key nodes of the three-stage waste heat recovery module include the input and output of the high-temperature loop directional conduit, the input of the medium-temperature loop flue gas conduit, the inlet and outlet of the heat transfer oil heat exchanger, the inside of the heat-insulated oil storage tank, the input of the low-temperature loop heat-insulated conduit, and the inside of the airflow channel of the base insulation layer.

[0012] Furthermore, in the intelligent control module, the execution components of the glass finished product manufacturing module include a screw conveyor, a molten pool heating assembly, a blowing nozzle, an opening and closing drive mechanism for the mold assembly, a material handling mechanism, and a conveying assembly for the annealing furnace.

[0013] On the other hand, a method for using an energy-saving glass blowing machine, the specific steps of which are as follows:

[0014] Preliminary preparation: Glass raw materials are fed into the raw material preheating chamber, and initial parameters are set by the controller based on historical data;

[0015] Start-up preheating: Start the equipment, and the mold assembly and the molten pool are preheated synchronously. The high-temperature flue gas generated by the opening and closing of the mold assembly enters the directional duct of the high-temperature circuit. Temperature sensors collect temperature data of the high-temperature circuit, medium-temperature circuit and low-temperature circuit. The controller calculates the real-time opening coefficient of the high-temperature circuit guide valve based on the multi-circuit waste heat dynamic distribution control algorithm formula. The opening degree of the guide valve is controlled according to the real-time opening coefficient. The high-temperature flue gas enters the raw material preheating chamber through the directional duct to preheat the raw material.

[0016] Molding process: The preheated raw material enters the melting pool via a screw conveyor and is melted into molten glass by the heating components of the melting pool. The molten glass is then transported to the blowing station of the main body of the molding machine via a flow channel. Compressed air is introduced through the blowing nozzle to blow the molten glass into the mold cavity. The mold assembly is kept closed by the opening and closing drive mechanism and the set temperature is maintained under the action of the constant temperature unit, so that the molten glass fits into the mold cavity to complete the molding process.

[0017] Waste heat utilization: The medium-temperature flue gas, after being preheated and cooled by the raw materials in the high-temperature circuit, enters the flue gas duct of the medium-temperature circuit. The controller controls the valve opening of the medium-temperature circuit through a multi-circuit waste heat dynamic distribution control algorithm formula. The flue gas enters the heat transfer oil heat exchanger and exchanges heat with the heat transfer oil in the tube side. The low-temperature tail gas after heat exchange enters the insulation duct of the low-temperature circuit. The controller controls the valve opening of the low-temperature circuit through a multi-circuit waste heat dynamic distribution control algorithm formula. The low-temperature tail gas enters the airflow channel of the base insulation layer to insulate the operating table. After the heat transfer oil is heated by heat exchange, it enters the insulation oil tank through the heat transfer oil duct. The controller calculates the heat that the temperature compensation unit needs to replenish through the heat transfer oil temperature compensation control formula. Based on the heat that needs to be replenished, the controller controls the operation of the compensation unit to maintain the heat transfer oil temperature stable. The heat transfer oil in the insulation oil tank continuously supplies energy to the constant temperature unit of the mold assembly.

[0018] Finished product shaping: After the glass is formed, the opening and closing drive mechanism of the mold assembly drives the moving mold to open, and the material picking mechanism grabs the formed glass product through pneumatic grippers and transfers it to the conveying assembly of the annealing furnace. The annealing furnace cools the product according to the preset gradient cooling curve, and the finished product shaping is completed after eliminating internal stress.

[0019] Closed-loop optimization: Real-time data collection of raw material preheating chamber outlet temperature, mold cavity temperature, heat transfer oil temperature, and equipment energy consumption data; calculation of waste heat recovery efficiency using the three-stage waste heat recovery efficiency calculation formula; evaluation of the actual effect of current waste heat recovery; dynamic optimization of priority weight coefficient, energy consumption compensation coefficient, and temperature compensation response coefficient to complete closed-loop optimization.

[0020] Furthermore, in the preliminary preparation, the initial parameters include the basic opening coefficient of the diversion valve, the temperature threshold, the specific heat capacity of the heat transfer oil, the temperature compensation response coefficient, as well as the waste heat grade coefficient and heat loss correction coefficient of the circuit.

[0021] Furthermore, in the preheating process, the formula for the multi-loop waste heat dynamic distribution control algorithm is as follows: ,in, For the first Real-time opening coefficient of each loop guide valve These are respectively a high-temperature circuit, a medium-temperature circuit, and a low-temperature circuit. For the first The basic opening coefficient of each loop valve. For the first Sensitivity coefficient for temperature deviation adjustment in each loop For the first Real-time flue gas temperature in each loop For the first Each circuit has a preset temperature threshold. For the first Maximum permissible temperature deviation for each circuit For the first The loop is relative to the first The priority weight coefficient of each loop, This is the energy consumption compensation coefficient. This represents the total energy consumption in real time. As a baseline energy consumption, This represents the maximum permissible energy consumption.

[0022] Furthermore, during the start-up preheating, the heat transfer oil temperature compensation control formula is: ,in, The calories that need to be replenished, The specific heat capacity of the heat transfer oil, For the quality of the heat transfer oil participating in heat exchange, Preset the target temperature for the heat transfer oil. This is the real-time temperature of the heat transfer oil. For temperature-compensated response coefficient, This refers to the opening coefficient of the flow guiding valve in the medium-temperature circuit. This is the basic opening coefficient of the flow guide valve in the medium-temperature circuit.

[0023] Furthermore, in the closed-loop optimization, the formula for calculating the comprehensive recovery efficiency of the three-stage waste heat is: ,in, To improve the overall efficiency of waste heat recovery, For the first The waste heat recovered by each loop For the first Waste heat grade coefficient of each loop For the first The waste heat generated by each circuit This is the heat loss correction factor.

[0024] Furthermore, in the closed-loop optimization, when When the current waste heat recovery status is deemed optimal, then... When the current waste heat recovery status is within the normal range, it is determined that the current status is normal. When the current waste heat recovery status is determined to be low, an abnormal investigation signal is triggered, including checking the integrity of the insulation layer of the directional duct in the high-temperature circuit, checking for scaling in the tube side of the heat transfer oil heat exchanger in the medium-temperature circuit, and checking for blockage in the airflow channel in the low-temperature circuit. Priority weight coefficient, energy consumption compensation coefficient, and temperature compensation response coefficient are optimized.

[0025] Compared with existing technologies, this energy-saving glass blowing machine and its usage method have the following advantages:

[0026] I. This invention achieves efficient tiered utilization of waste heat during the glass blowing process through the design of a three-stage waste heat recovery module, improving energy efficiency. The high-temperature loop directly recovers the high-temperature flue gas discharged from the mold assembly through a directional conduit for initial heating of the raw material preheating chamber, reducing external energy input. The medium-temperature loop uses a flue gas conduit to introduce the cooled flue gas into a heat transfer oil heat exchanger for heat exchange with the heat transfer oil. The heated heat transfer oil continuously supplies energy to the constant temperature unit of the mold assembly through an insulated oil storage tank, ensuring temperature stability during the molding process. The low-temperature loop introduces the exhaust gas after heat exchange into the base insulation layer to provide auxiliary insulation for the operating table, further reducing heat loss. The multi-loop waste heat dynamic distribution control algorithm formula optimizes the opening of the flow guide valves in each loop in real time, maximizing waste heat recovery efficiency.

[0027] Second, this invention achieves automation and dynamic optimization of the entire glass blowing process through the integration of intelligent control modules. Temperature sensors cover key nodes such as the raw material preheating chamber, melting pool, mold cavity, and annealing furnace, collecting temperature data in real time and feeding it back to the controller. The controller adjusts the opening of the guide valve and the amount of heat to be added by the temperature compensation unit based on the multi-loop waste heat dynamic distribution control algorithm and the heat transfer oil temperature compensation control formula. In addition, the closed-loop optimization mechanism evaluates the actual effect of waste heat recovery through the three-level waste heat comprehensive recovery efficiency calculation formula and dynamically adjusts each coefficient to form a closed-loop control optimization system, thereby improving the stability and economy of the production process.

[0028] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0030] Figure 1 A flowchart illustrating the usage of an energy-saving glass blowing machine;

[0031] Figure 2 This is a frame diagram of an energy-saving glass blowing machine. Detailed Implementation

[0032] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0033] Example 1:

[0034] Glass Finished Product Manufacturing Module: In the production area of ​​the production workshop for architectural glass, the raw material preheating chamber, melting pool, forming machine body, and annealing furnace are arranged in a continuous sequence. The raw material preheating chamber is a cylindrical stainless steel chamber. The top is connected to glass raw materials such as quartz sand, soda ash, and limestone via a conveyor belt. The bottom of the chamber is directly connected to the melting pool below by a screw conveyor. The melting pool is built with refractory bricks and has built-in electric heating components, which can heat the raw materials to 1500℃ and melt them into glass liquid. The glass liquid is transported to the forming machine body in front through a flow channel on one side of the pool. The forming machine body is equipped with a rectangular cavity mold assembly. The mold has a blow nozzle on top and hydraulic opening and closing drive mechanisms on both sides. The pneumatic gripper material handling mechanism corresponds to the tunnel-type annealing furnace at the end of the material handling path. The stainless steel mesh belt conveyor assembly in the annealing furnace can realize the gradient cooling of the formed glass.

[0035] The three-stage waste heat recovery module includes a high-temperature circuit, a medium-temperature circuit, and a low-temperature circuit connected in series, such as... Figure 1 As shown, one end of the directional conduit of the high-temperature circuit is connected to the flue gas outlet of the mold assembly, and the other end is connected to the raw material preheating chamber. It can introduce the high-temperature flue gas of more than 850°C generated by the opening and closing of the mold into the raw material preheating chamber to preheat the raw material. The flue gas conduit of the medium-temperature circuit is connected to the flue gas outlet of the raw material preheating chamber and connected to the heat transfer oil heat exchanger. The heat transfer oil heat exchanger is connected to the heat-insulated oil tank through the heat transfer oil conduit, and a temperature compensation unit is set between the two. The heat-insulated oil tank then supplies energy to the constant temperature unit of the mold assembly through another heat transfer oil conduit. The heat-insulated conduit of the low-temperature circuit introduces the low-temperature exhaust gas of less than 150°C discharged from the heat transfer oil heat exchanger into the base insulation layer under the molding machine and the operating table to maintain the operating table at a temperature of 45-50°C.

[0036] Intelligent control module: includes temperature sensors, flow guide valves and PLC controller. The PLC controller is electrically connected to temperature sensors at key nodes, such as temperature sensors at the inlet and outlet of the raw material preheating chamber, inside the melting pool, mold cavity, and ends of each circuit conduit, as well as flow guide valves in each circuit, such as electric butterfly valves for directional conduits, electric ball valves for flue gas conduits, electric gate valves for insulated conduits, and actuators such as screw conveyors, melting pool heating components, blowing nozzles, mold opening and closing drive mechanisms, material handling mechanisms, and annealing kiln conveying components, to achieve coordinated control of the entire process.

[0037] In summary, this energy-saving glass blowing molding machine arranges the glass finished product manufacturing module in the order of raw material preheating chamber - melting pool - molding machine body - annealing furnace, with all execution components covering key production links; the three-stage waste heat recovery module follows a series structure, with the high-temperature circuit using high-temperature flue gas from the mold assembly to preheat the raw material, the medium-temperature circuit heating the heat transfer oil through a heat exchanger to maintain the temperature of the mold assembly, and the low-temperature circuit using exhaust gas to insulate the operating table, realizing the tiered utilization of waste heat; the PLC controller of the intelligent control module connects the temperature sensors, flow guide valves and execution components at all nodes to ensure the coordinated operation of each module, which not only meets the needs of architectural glass production, but also improves energy efficiency through waste heat recovery.

[0038] Example 2:

[0039] Preliminary preparation: Quartz sand, soda ash, and limestone, among other building glass raw materials, are fed into the raw material preheating chamber. The PLC controller retrieves historical data from the past six months of building glass production and sets initial parameters, including the basic opening coefficients of the guide valves for the high-temperature, medium-temperature, and low-temperature circuits; the temperature thresholds for the raw material preheating chamber outlet, the melting pool, and the mold cavity; the specific heat capacity and temperature compensation response coefficient of the heat transfer oil; and the residual heat grade coefficient and heat loss correction coefficient for the high-temperature, medium-temperature, and low-temperature circuits. This ensures that each parameter is compatible with the component characteristics of each module.

[0040] Preheating Startup: After starting the main switch of the equipment, the rectangular cavity mold assembly of the molding machine body and the molten pool are preheated synchronously. The mold assembly is heated from room temperature to 600℃, and the molten pool is heated to 1500℃. High-temperature flue gas above 850℃ generated during the opening and closing of the mold assembly enters the directional duct of the high-temperature circuit. Temperature sensors collect temperature data in real time at key nodes such as both ends of the directional duct of the high-temperature circuit, the input end of the flue gas duct of the medium-temperature circuit, and the input end of the insulation duct of the low-temperature circuit. The controller calls the multi-loop waste heat dynamic distribution control algorithm formula to calculate the real-time opening coefficient of the high-temperature circuit guide valve and controls the electric butterfly valve on the directional duct to open according to the real-time opening coefficient. The multi-loop waste heat dynamic distribution control algorithm formula is as follows: ,in, For the first Real-time opening coefficient of each loop guide valve These are respectively a high-temperature circuit, a medium-temperature circuit, and a low-temperature circuit. For the first The basic opening coefficient of each loop valve. For the first Sensitivity coefficient for temperature deviation adjustment in each loop For the first Real-time flue gas temperature in each loop For the first Each circuit has a preset temperature threshold. For the first Maximum permissible temperature deviation for each circuit For the first The loop is relative to the first The priority weight coefficient of each loop, This is the energy consumption compensation coefficient. This represents the total energy consumption in real time. As a baseline energy consumption, To maximize energy consumption, high-temperature flue gas is smoothly introduced into the raw material preheating chamber through a directional duct, gradually heating the glass raw material in the chamber from room temperature to 280-300℃, thus shortening the heating time for the subsequent melting process.

[0041] Molding Process: When the outlet temperature of the raw material preheating chamber reaches 280-300℃, the screw conveyor starts at the speed set by the controller, transporting the preheated raw material to the melting pool, which has been heated to 1500℃. The electric heating components in the melting pool maintain the temperature, completely melting the preheated raw material into a uniform glass liquid. The glass liquid is then uniformly transported to the blowing station of the molding machine body via the flow channel. The controller controls the blowing nozzle to introduce compressed air, while simultaneously keeping the hydraulic opening and closing drive mechanism of the mold assembly closed. The constant temperature unit of the mold assembly maintains a cavity temperature of 600℃ under the power of the heat transfer oil in the medium-temperature circuit, ensuring that the glass liquid fully adheres to the inner wall of the cavity. After pressure holding, the initial glass forming is completed. Figure 2 As shown.

[0042] Waste heat utilization: In the high-temperature circuit, the medium-temperature flue gas, preheated to 480℃ by the raw materials, enters the flue gas duct of the medium-temperature circuit. The controller again calls the multi-loop waste heat dynamic distribution control algorithm formula to calculate and control the opening of the electric ball valve on the flue gas duct, ensuring the medium-temperature flue gas stably enters the heat transfer oil heat exchanger for heat exchange with the heat transfer oil in the tube side. The low-temperature exhaust gas, cooled to 150℃ after heat exchange, enters the insulation duct of the low-temperature circuit. The controller continues to adjust the opening of the electric gate valve on the insulation duct using the multi-loop waste heat dynamic distribution control algorithm formula, allowing the low-temperature exhaust gas to enter the airflow channel of the base insulation layer, maintaining a suitable temperature of 45-50℃ for the operating platform. After heat exchange and temperature increase, the heat transfer oil flows into the insulation storage tank through the heat transfer oil duct. The controller calls the heat transfer oil temperature compensation control formula to calculate the heat required to supplement the temperature compensation unit. The heat transfer oil temperature compensation control formula is: ,in, The calories that need to be replenished, The specific heat capacity of the heat transfer oil, For the quality of the heat transfer oil participating in heat exchange, Preset the target temperature for the heat transfer oil. This is the real-time temperature of the heat transfer oil. For temperature-compensated response coefficient, This refers to the opening coefficient of the flow guiding valve in the medium-temperature circuit. The basic opening coefficient of the medium-temperature circuit guide valve; based on the operation of the heat control compensation unit that needs to be supplemented, the temperature of the heat transfer oil is stabilized at 380℃, ensuring that the heat storage tank can continuously supply energy to the mold constant temperature unit.

[0043] Finished Product Shaping: After the glass is initially formed, the opening and closing drive mechanism of the mold assembly drives the moving mold to open slowly. The pneumatic grippers of the material handling mechanism grab the formed glass according to the controller's instructions and transfer it to the mesh belt conveyor assembly of the annealing furnace. The controller controls the mesh belt to run at a speed of 0.4 m / min, while the annealing furnace cools the glass according to a preset gradient cooling curve. The preset gradient cooling curve is 600℃-400℃, cooling rate 5℃ / min and holding for 20 minutes; 400℃-200℃, cooling rate 3℃ / min and holding for 30 minutes; 200℃-room temperature, cooling rate 2℃ / min; completely eliminating the internal stress of the glass and completing the finished product shaping.

[0044] Closed-loop optimization: Throughout the production process, temperature sensors collect real-time data on the raw material preheating chamber outlet temperature, mold cavity temperature, and heat transfer oil temperature. The energy consumption monitoring unit simultaneously collects the equipment's real-time total energy consumption. The controller uses the three-stage waste heat recovery efficiency calculation formula to calculate the current waste heat recovery efficiency. The three-stage waste heat recovery efficiency calculation formula is as follows: ,in, To improve the overall efficiency of waste heat recovery, For the first The waste heat recovered by each loop For the first Waste heat grade coefficient of each loop For the first The waste heat generated by each circuit This is the heat loss correction factor; The controller triggered an anomaly detection signal. After inspecting the three-stage waste heat recovery module, it was found that the insulation layer of the directional duct of the high-temperature circuit was damaged. After repair, the controller dynamically optimized the priority weight coefficient, energy consumption compensation coefficient and temperature compensation response coefficient of the high-temperature circuit relative to the medium-temperature circuit. After running again, the overall waste heat recovery efficiency was improved, and the closed-loop optimization was completed to ensure the energy-saving stability of subsequent architectural glass production.

[0045] In summary, the initial preparation stage involves setting the initial parameters of the compatible equipment components; the preheating stage relies on the high-temperature circuit flue gas to preheat the raw materials, reducing melting energy consumption; the forming process uses the equipment's actuators to control melting, blowing, and pressure holding, ensuring the quality of glass forming; the waste heat utilization stage involves the coordinated operation of each circuit to fully recover waste heat at different temperature ranges; the finished product shaping stage utilizes the gradient cooling of the annealing furnace to eliminate stress; and the closed-loop optimization stage uses monitoring data to evaluate waste heat efficiency, identify anomalies, and optimize parameters, ensuring both the stability of architectural glass production and leveraging the energy-saving advantages of the equipment.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An energy-saving glass blowing machine, characterized in that, The device includes: Glass finished product manufacturing module: including raw material preheating chamber, melting pool, forming machine body and annealing furnace, wherein the melting pool is located between the raw material preheating chamber and the forming machine body, and the annealing furnace is located at the end of the material picking path of the forming machine body; The three-stage waste heat recovery module includes a high-temperature circuit, a medium-temperature circuit, and a low-temperature circuit connected in series. The high-temperature circuit includes a directional conduit. The medium-temperature circuit includes a flue gas conduit, a heat transfer oil conduit, a heat transfer oil heat exchanger, an insulated oil storage tank, and a temperature compensation unit. The low-temperature circuit includes an insulated conduit and a base insulation layer. Intelligent control module: includes temperature sensor, flow guide valve and controller. The temperature sensor is arranged at key nodes of glass product manufacturing module and three-stage waste heat recovery module. The flow guide valve is respectively set on the directional duct, flue gas duct and heat preservation duct of high temperature circuit, medium temperature circuit and low temperature circuit. The controller is electrically connected to the temperature sensor, flow guide valve and the execution component of glass product manufacturing module.

2. The energy-saving glass blowing machine according to claim 1, characterized in that, In the three-stage waste heat recovery module, the main body of the molding machine is connected to the raw material preheating chamber through a directional conduit. The raw material preheating chamber is connected to the heat transfer oil heat exchanger through a flue gas conduit. The heat transfer oil heat exchanger is connected to the insulated oil storage tank through a heat transfer oil conduit. The insulated oil storage tank is connected to the constant temperature unit of the main body of the molding machine through another heat transfer oil conduit. The temperature compensation unit is set on the heat transfer oil conduit between the heat transfer oil heat exchanger and the insulated oil storage tank. The heat transfer oil heat exchanger is connected to the base insulation layer through an insulation conduit.

3. The energy-saving glass blowing machine according to claim 1, characterized in that, In the intelligent control module, the key nodes of the glass finished product manufacturing module include the raw material inlet and outlet of the raw material preheating chamber, the inside of the melting pool, the inside of the mold assembly cavity of the forming machine body, and the inlet and outlet of the annealing furnace; the key nodes of the three-stage waste heat recovery module include the input and output of the high-temperature loop directional duct, the input of the medium-temperature loop flue gas duct, the inlet and outlet of the heat transfer oil heat exchanger, the inside of the heat-insulated oil storage tank, the input of the low-temperature loop heat-insulated duct, and the inside of the airflow channel of the base insulation layer.

4. The energy-saving glass blowing machine according to claim 1, characterized in that, In the intelligent control module, the execution components of the glass finished product manufacturing module include a screw conveyor, a melting pool heating assembly, a blowing nozzle, an opening and closing drive mechanism for the mold assembly, a material handling mechanism, and a conveying assembly for the annealing furnace.

5. A method of using an energy-saving glass blowing machine, the method being applicable to the energy-saving glass blowing machine according to any one of claims 1-4, characterized in that, The method includes: Preliminary preparation: Glass raw materials are fed into the raw material preheating chamber, and initial parameters are set by the controller based on historical data; Start-up preheating: Start the equipment, and the mold assembly and the molten pool are preheated synchronously. The high-temperature flue gas generated by the opening and closing of the mold assembly enters the directional duct of the high-temperature circuit. Temperature sensors collect temperature data of the high-temperature circuit, medium-temperature circuit and low-temperature circuit. The controller calculates the real-time opening coefficient of the high-temperature circuit guide valve based on the multi-circuit waste heat dynamic distribution control algorithm formula. The opening degree of the guide valve is controlled according to the real-time opening coefficient. The high-temperature flue gas enters the raw material preheating chamber through the directional duct to preheat the raw material. Molding process: The preheated raw material enters the melting pool via a screw conveyor and is melted into molten glass by the heating components of the melting pool. The molten glass is then transported to the blowing station of the main body of the molding machine via a flow channel. Compressed air is introduced through the blowing nozzle to blow the molten glass into the mold cavity. The mold assembly is kept closed by the opening and closing drive mechanism and the set temperature is maintained under the action of the constant temperature unit, so that the molten glass fits into the mold cavity to complete the molding process. Waste heat utilization: The medium-temperature flue gas, after being preheated and cooled by the raw materials in the high-temperature circuit, enters the flue gas duct of the medium-temperature circuit. The controller controls the valve opening of the medium-temperature circuit through a multi-circuit waste heat dynamic distribution control algorithm formula. The flue gas enters the heat transfer oil heat exchanger and exchanges heat with the heat transfer oil in the tube side. The low-temperature tail gas after heat exchange enters the insulation duct of the low-temperature circuit. The controller controls the valve opening of the low-temperature circuit through a multi-circuit waste heat dynamic distribution control algorithm formula. The low-temperature tail gas enters the airflow channel of the base insulation layer to insulate the operating table. After the heat transfer oil is heated by heat exchange, it enters the insulation oil tank through the heat transfer oil duct. The controller calculates the heat that the temperature compensation unit needs to replenish through the heat transfer oil temperature compensation control formula. Based on the heat that needs to be replenished, the controller controls the operation of the compensation unit to maintain the heat transfer oil temperature stable. The heat transfer oil in the insulation oil tank continuously supplies energy to the constant temperature unit of the mold assembly. Finished product shaping: After the glass is formed, the opening and closing drive mechanism of the mold assembly drives the moving mold to open, and the material picking mechanism grabs the formed glass product through pneumatic grippers and transfers it to the conveying assembly of the annealing furnace. The annealing furnace cools the product according to the preset gradient cooling curve, and the finished product shaping is completed after eliminating internal stress. Closed-loop optimization: Real-time data collection of raw material preheating chamber outlet temperature, mold cavity temperature, heat transfer oil temperature, and equipment energy consumption data; calculation of waste heat recovery efficiency using the three-stage waste heat recovery efficiency calculation formula; evaluation of the actual effect of current waste heat recovery; dynamic optimization of priority weight coefficient, energy consumption compensation coefficient, and temperature compensation response coefficient to complete closed-loop optimization.

6. The method of using an energy-saving glass blowing machine according to claim 5, characterized in that, In the preliminary preparation, the initial parameters include the basic opening coefficient of the flow guide valve, the temperature threshold, the specific heat capacity of the heat transfer oil, the temperature compensation response coefficient, as well as the waste heat grade coefficient and heat loss correction coefficient of the circuit.

7. The method of using an energy-saving glass blowing machine according to claim 5, characterized in that, The formula for the multi-loop waste heat dynamic distribution control algorithm during the start-up preheating process is as follows: ,in, For the first Real-time opening coefficient of each loop guide valve These are respectively a high-temperature circuit, a medium-temperature circuit, and a low-temperature circuit. For the first The basic opening coefficient of each loop valve. For the first Sensitivity coefficient for temperature deviation adjustment in each loop For the first Real-time flue gas temperature in each loop For the first Each circuit has a preset temperature threshold. For the first Maximum permissible temperature deviation for each circuit For the first The loop is relative to the first The priority weight coefficient of each loop, This is the energy consumption compensation coefficient. This represents the total energy consumption in real time. As a baseline energy consumption, This represents the maximum permissible energy consumption.

8. The method of using an energy-saving glass blowing machine according to claim 5, characterized in that, During the initial preheating process, the heat transfer oil temperature compensation control formula is as follows: ,in, The calories that need to be replenished, The specific heat capacity of the heat transfer oil, For the quality of the heat transfer oil participating in heat exchange, Preset the target temperature for the heat transfer oil. This is the real-time temperature of the heat transfer oil. For temperature-compensated response coefficient, This refers to the opening coefficient of the flow guiding valve in the medium-temperature circuit. This is the basic opening coefficient of the flow guide valve in the medium-temperature circuit.

9. The method of using an energy-saving glass blowing machine according to claim 5, characterized in that, In the closed-loop optimization, the formula for calculating the comprehensive recovery efficiency of the three-stage waste heat is: ,in, To improve the overall efficiency of waste heat recovery, For the first The waste heat recovered by each loop For the first Waste heat grade coefficient of each loop For the first The waste heat generated by each circuit This is the heat loss correction factor.

10. The method of using an energy-saving glass blowing machine according to claim 6, characterized in that, In the closed-loop optimization, when When the current waste heat recovery status is deemed optimal, then... When the current waste heat recovery status is within the normal range, it is determined that the current status is normal. When the current waste heat recovery status is determined to be low, an abnormal investigation signal is triggered, including checking the integrity of the insulation layer of the directional duct in the high-temperature circuit, checking for scaling in the tube side of the heat transfer oil heat exchanger in the medium-temperature circuit, and checking for blockage in the airflow channel in the low-temperature circuit. Priority weight coefficient, energy consumption compensation coefficient, and temperature compensation response coefficient are optimized.

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