CN-121974546-A - Energy-saving glass blow molding machine and application method thereof

CN121974546ACN 121974546 ACN121974546 ACN 121974546ACN-121974546-A

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, wherein the method comprises the specific steps of preliminary preparation, starting preheating, forming processing, waste heat utilization, finished product shaping and closed loop optimization; the invention realizes the efficient cascade utilization of waste heat in the glass blowing forming process by the design of the three-stage waste heat recovery module, improves the energy utilization rate, directly recovers high-temperature flue gas exhausted by the die assembly through the directional guide pipe for the initial heating of the raw material preheating bin, introduces the cooled flue gas into the heat conduction oil heat exchanger by the medium-temperature loop through the flue gas guide pipe to exchange heat with the heat conduction oil, continuously supplies energy for the constant-temperature unit of the die assembly through the heat preservation oil storage tank after temperature rising, ensures the temperature stability of the forming process, and introduces the tail gas after heat exchange into the base heat preservation layer by the low-temperature loop to provide auxiliary heat preservation for the operation desk and further reduce the heat loss.

Inventors

GAO XIN
Bin Xueling

Assignees

重庆雅琳玻璃制品有限公司

Dates

Publication Date: 20260505
Application Date: 20251224

Claims (10)

1. An energy efficient glass blow moulding machine, characterized in that the apparatus comprises: The glass finished product manufacturing module comprises a raw material preheating bin, a melting tank, a forming machine main body and an annealing kiln, wherein the melting tank is arranged between the raw material preheating bin and the forming machine main body, and the annealing kiln is arranged at the tail end of a material taking path of the forming machine main body; The three-stage waste heat recovery module comprises a high-temperature loop, a medium-temperature loop and a low-temperature loop which are sequentially connected in series, wherein the high-temperature loop comprises a directional guide pipe, the medium-temperature loop comprises a flue gas guide pipe, a heat conducting oil heat exchanger, a heat preservation oil storage tank and a temperature compensation unit, and the low-temperature loop comprises a heat preservation guide pipe and a base heat preservation layer; The intelligent control module comprises a temperature sensor, a flow guide valve and a controller, wherein the temperature sensor is arranged at key nodes of the glass finished product manufacturing module and the three-stage waste heat recovery module, the flow guide valve is respectively arranged on a directional guide pipe, a flue gas guide pipe and a heat preservation guide pipe of the high-temperature loop, the medium-temperature loop and the low-temperature loop, and the controller is respectively electrically connected with the temperature sensor, the flow guide valve and an execution part of the glass finished product manufacturing module.
2. The energy-saving glass-blowing molding machine according to claim 1, wherein in the three-stage waste heat recovery module, the molding machine body is communicated with the raw material preheating bin through a directional conduit, the raw material preheating bin is communicated with the heat conduction oil heat exchanger through a flue gas conduit, the heat conduction oil heat exchanger is communicated with the heat preservation oil storage tank through a heat conduction oil conduit, the heat preservation oil storage tank is connected with the constant temperature unit of the molding machine body through another heat conduction oil conduit, the temperature compensation unit is arranged on the heat conduction oil conduit between the heat conduction oil heat exchanger and the heat preservation oil storage tank, and the heat conduction oil heat exchanger is communicated with the base heat preservation layer through a heat preservation conduit.
3. The energy-saving glass-blowing molding machine according to claim 1, wherein the key nodes of the intelligent control module comprise a raw material inlet and a raw material outlet of a raw material preheating bin, a melting tank, a mold component cavity of a molding machine main body, an inlet end and an outlet end of an annealing kiln, and the key nodes of the three-stage waste heat recovery module comprise an input end and an output end of a high-temperature loop directional guide pipe, an input end of a medium-temperature loop flue gas guide pipe, a heat conduction oil inlet end and an outlet end of a heat conduction oil heat exchanger, an inside of a heat preservation oil storage tank, an input end of a low-temperature loop heat preservation guide pipe and an air flow channel of a base heat preservation layer.
4. An energy efficient glass blow molding machine according to claim 1, wherein the intelligent control module comprises a conveyor screw, a pool heating assembly, a blowing nozzle, a mold assembly opening and closing drive mechanism, a take-off mechanism, and an annealing lehr conveyor assembly.
5. A method of using an energy efficient glass blow moulding machine, the method being applicable to an energy efficient glass blow moulding machine according to any of claims 1-4, characterized in that the method comprises: the preparation in the early stage comprises the steps of adding glass raw materials into a raw material preheating bin, and setting initial parameters according to historical data through a controller; Starting preheating, namely starting equipment, synchronously preheating a die assembly and a melting tank, enabling high-temperature flue gas generated by opening and closing the die assembly to enter a directional guide pipe of a high-temperature loop, collecting temperature data of the high-temperature loop, a medium-temperature loop and a low-temperature loop by a temperature sensor, respectively calculating real-time opening coefficients of a diversion valve of the high-temperature loop by a controller based on a multi-loop waste heat dynamic allocation control algorithm formula, controlling the opening degree of the diversion valve according to the real-time opening coefficients, and enabling the high-temperature flue gas to enter a raw material preheating bin to preheat raw materials by the directional guide pipe; the method comprises the steps of (1) preheating raw materials, entering a melting tank through a screw conveyor, melting into glass liquid through a melting tank heating assembly, conveying the glass liquid to a blowing station of a forming machine main body through a liquid flowing tank, blowing the glass liquid into a mold cavity through a blowing nozzle by introducing compressed air, keeping the mold assembly closed through an opening and closing driving mechanism, and maintaining a set temperature under the action of a constant temperature unit to enable the glass liquid to be attached to the mold cavity to finish forming; The controller controls the opening of a valve of the medium-temperature loop through a multi-loop waste heat dynamic distribution control algorithm formula, the flue gas enters a heat-conducting oil heat exchanger to exchange heat with heat-conducting oil in a tube side, low-temperature tail gas after heat exchange enters a heat-preserving conduit of the low-temperature loop, the controller controls the opening of the valve of the low-temperature loop through a multi-loop waste heat dynamic distribution control algorithm formula, the low-temperature tail gas is introduced into an airflow channel of a heat-preserving layer of a base to preserve heat for an operation table; After the glass is formed, the opening and closing driving mechanism of the mould assembly drives the movable mould to open, the material taking mechanism grabs the formed glass product through the pneumatic clamping jaw and transfers the formed glass product to the conveying assembly of the annealing kiln, the annealing kiln cools the product according to a preset gradient cooling curve, and the finished product forming is completed after internal stress is eliminated; And closed loop optimization, namely collecting the outlet temperature of the raw material preheating bin, the temperature of the die cavity, the temperature of the heat conducting oil and the real-time energy consumption data of the equipment in real time, calculating the comprehensive waste heat recovery efficiency through a three-stage comprehensive waste heat recovery efficiency calculation formula, evaluating the actual effect of current waste heat recovery, dynamically optimizing the priority weight coefficient, the energy consumption compensation coefficient and the temperature compensation response coefficient, and completing closed loop optimization.
6. A method of using an energy efficient glass-blowing machine according to claim 5, characterized in that in the preliminary preparation, the initial parameters include the basic opening coefficient of the diverter valve, the temperature threshold value, the specific heat capacity of the heat transfer oil, the temperature compensation response coefficient, and the waste heat grade coefficient and the heat loss correction coefficient of the circuit.
7. The method of claim 5, wherein in the starting preheating, the multi-loop waste heat dynamic distribution control algorithm formula is: , wherein, Is the first The real-time opening coefficient of the flow guide valve of each loop, Respectively a high-temperature loop, a medium-temperature loop and a low-temperature loop, Is the first The basic opening coefficient of each loop valve, Is the first The individual loop temperature deviations adjust the sensitivity coefficient, Is the first The temperature of the flue gas in real time in each loop, Is the first The temperature threshold is preset for each loop, Is the first The maximum allowable temperature deviation of each loop is, Is the first The loops are opposite to the first The priority weighting coefficients of the individual loops, In order to compensate for the energy consumption by a factor, For the total energy consumption in real time, As a reference to the energy consumption of the plant, Is the maximum allowable energy consumption.
8. A method of using an energy efficient glass blowing machine according to claim 5, wherein the starting preheating, conduction oil temperature compensation control formula is: , wherein, In order to supplement the heat required by the system, For the specific heat capacity of the heat conducting oil, In order to take part in the heat transfer oil quality, A target temperature is preset for the heat transfer oil, Is the real-time temperature of the heat conduction oil, For the temperature compensation response coefficient, Is the opening coefficient of the diversion valve of the medium-temperature loop, Is the basic aperture coefficient of the medium temperature loop diversion valve.
9. The method of claim 5, wherein in the closed loop optimization, the three-stage waste heat comprehensive recovery efficiency calculation formula is: , wherein, In order to realize the comprehensive recovery efficiency of the waste heat, Is the first The residual heat quantity recovered by the loop, Is the first The grade coefficient of the waste heat of each loop, Is the first The residual heat generated by the individual loops is used, The coefficient is corrected for heat loss.
10. Use of an energy efficient glass blow moulding machine according to claim 6, wherein in the closed loop optimization, when When the current waste heat recovery state is judged to be better, when When the current waste heat recovery state is in the normal range, and when When the method is used, the current waste heat recovery state is judged to be lower, and an abnormal investigation signal is triggered, wherein the abnormal investigation signal comprises the integrity inspection of a related high-temperature loop directional conduit heat preservation layer, the tube side scaling inspection of a medium-temperature loop heat transfer oil heat exchanger and the blockage inspection of a low-temperature loop airflow channel, and the priority weight coefficient, the energy consumption compensation coefficient and the temperature compensation response coefficient are optimized.

Description

Energy-saving glass blow molding machine and application method thereof Technical Field The invention relates to the technical field of glass production, in particular to an energy-saving glass blow molding machine and a using method thereof. Background The glass blow molding is a key process in the glass manufacturing field, is widely applied to industries such as buildings, automobiles, daily necessities and the like, and has the core processes of raw material preheating, melting, blow molding and annealing shaping, glass raw materials are required to be melted by high-temperature heating, then blown into a specific shape by a mold, and finally internal stress is eliminated by annealing, and in the process, a large amount of high-temperature waste heat is generated in links such as a mold assembly, a melting tank, an annealing kiln and the like, if the waste heat is not effectively recycled, not only energy waste is caused, but also the thermal load of a production environment is increased. However, the waste heat recovery equipment of traditional glass blowing molding equipment adopts single-stage recovery design more, only retrieves partial high temperature flue gas through simple heat exchanger, and remaining medium and low temperature waste heat is direct to be discharged, leads to waste heat comprehensive utilization rate, and simultaneously, traditional equipment lacks dynamic regulation and control ability, and waste heat distribution relies on fixed valve aperture, can't adjust the heat distribution proportion of high temperature, medium temperature, low temperature return circuit according to the real-time operating mode, leads to mould preheating inadequately or excessively heats, influences shaping stability, in the aspect of temperature control, traditional equipment adopts open loop control or single node feedback more, can't cover raw materials preheating, melting, shaping and annealing overall process's temperature data, leads to mould die cavity temperature fluctuation great, and the defective rate of products is higher. Thus, an energy efficient glass blow molding machine and a method of use thereof have been developed. Disclosure of Invention The invention aims to make up the defects of the prior art and provides an energy-saving glass-blowing forming machine and a using method thereof, and the invention realizes the efficient cascade utilization of waste heat in the glass-blowing forming process by the design of the three-stage waste heat recovery module, improves the energy utilization rate, directly recovers high-temperature flue gas exhausted by a die assembly through a directional conduit by a high-temperature loop, is used for the initial heating of a raw material preheating bin, and reduces the input of external energy; the low-temperature loop introduces the tail gas after heat exchange into a base heat-insulating layer to provide auxiliary heat for an operation desk, further reduces heat loss, optimizes the opening of each loop flow guiding valve in real time through a multi-loop waste heat dynamic distribution control algorithm formula, and maximizes waste heat recovery efficiency. In order to solve the technical problems, the invention provides the following technical scheme that on one hand, the energy-saving glass blowing molding machine comprises: The glass finished product manufacturing module comprises a raw material preheating bin, a melting tank, a forming machine main body and an annealing kiln, wherein the melting tank is arranged between the raw material preheating bin and the forming machine main body, and the annealing kiln is arranged at the tail end of a material taking path of the forming machine main body; The three-stage waste heat recovery module comprises a high-temperature loop, a medium-temperature loop and a low-temperature loop which are sequentially connected in series, wherein the high-temperature loop comprises a directional guide pipe, the medium-temperature loop comprises a flue gas guide pipe, a heat conducting oil heat exchanger, a heat preservation oil storage tank and a temperature compensation unit, and the low-temperature loop comprises a heat preservation guide pipe and a base heat preservation layer; The intelligent control module comprises a temperature sensor, a flow guide valve and a controller, wherein the temperature sensor is arranged at key nodes of the glass finished product manufacturing module and the three-stage waste heat recovery module, the flow guide valve is respectively arranged on a directional guide pipe, a flue gas guide pipe and a heat preservation guide pipe of the high-temperature loop, the medium-temperature loop and the low-temperature loop, and the controller is respectively electrically connected with the temperature sensor, the flow guide valve and an execution part of the glass finished product manufacturing module. Further, in the three-stage waste heat recovery module, the forming machine main body is communica