High-precision temperature-control hot melting kettle temperature control system

Abstract

The utility model discloses a high-precision temperature control hot melting kettle temperature control system, which comprises a hot melting kettle used for melting hot melting paint; the heat-conducting oil heating system comprises a heating tank, a heat-conducting oil circulating pump and an intelligent diverter valve, the heating tank is filled with heat-conducting oil, heat is circularly transferred to the hot melting kettle through the heat-conducting oil circulating pump, and the intelligent diverter valve is used for controlling the flow direction of the heat-conducting oil; the temperature monitoring circuit comprises at least three distributed temperature sensors which are respectively arranged at the feed port, the discharge port and the kettle bottom of the hot melting kettle and are used for monitoring the temperature distribution in the hot melting kettle in real time; and the PID control circuit is used for receiving a signal of the temperature monitoring circuit and outputting a control signal to an intelligent diverter valve and a heat-conducting oil circulating pump of the heat-conducting oil heating system. Meanwhile, due to the cooperative work of the intelligent diverter valve and the heat-conducting oil circulating pump, uniform temperature distribution in the hot melting kettle is ensured, and the local overheating or supercooling condition is avoided, so that the reliability and stability of the system are improved.

Description

Technical Field

[0001] The utility model specifically relates to a high-precision temperature control hot-melt kettle temperature control system. Background Art

[0002] The heat-conducting oil temperature control kettle is a brand-new energy-saving and environment-friendly temperature control hot-melt kettle, which is a special hot-melt kettle for marking projects that uses heat-conducting oil as a medium to transfer heat for heating and thus melt the hot-melt coating.

[0003] During the melting process of the hot-melt coating, the accuracy of temperature control is crucial for the melting quality of the coating and the final marking quality. Traditional temperature control systems often use simple on-off control or single PID control. These systems are often difficult to achieve precise temperature control when facing complex working conditions of the hot-melt kettle. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-precision temperature control hot-melt kettle temperature control system to solve the problems put forward in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a high-precision temperature control hot-melt kettle temperature control system, including:

[0006] A hot-melt kettle for melting the hot-melt coating;

[0007] A heat-conducting oil heating system, including a heating tank, a heat-conducting oil circulation pump and an intelligent flow dividing valve. The heating tank is filled with heat-conducting oil, and the heat is circulated and transferred to the hot-melt kettle through the heat-conducting oil circulation pump. The intelligent flow dividing valve is used to control the flow direction of the heat-conducting oil;

[0008] A temperature monitoring circuit, including at least three distributed temperature sensors, which are respectively arranged at the feeding port, the discharging port and the bottom of the hot-melt kettle for real-time monitoring of the temperature distribution in the hot-melt kettle;

[0009] A PID control circuit, which receives the signal of the temperature monitoring circuit and outputs a control signal to the intelligent flow dividing valve and the heat-conducting oil circulation pump of the heat-conducting oil heating system.

[0010] Preferably, the heating tank is arranged below the hot-melt kettle and has a spherical structure, filled with heat-conducting oil. The heating tank is provided with a heat-conducting oil outlet and an inlet for realizing the inlet and outlet circulation of the heat-conducting oil.

[0011] Preferably, it includes an intelligent execution module. The intelligent execution module includes at least one current adjustment module and a voltage adjustment module, which controls the heating power and the circulation flow rate of the heat-conducting oil heating system according to the output signal of the PID control circuit.

[0012] Preferably, the intelligent execution module further includes a fault detection module for monitoring the working state of the execution module and automatically switching to the standby execution module when an abnormality is detected.

[0013] Preferably, the temperature monitoring single path further includes a temperature data recorder for storing temperature historical data for at least one month and sending it to a remote server through a wireless communication module.

[0014] Preferably, the intelligent flow dividing valve includes at least two independently controlled flow dividing channels for adjusting the flow direction and flow rate of the heat transfer oil according to the signal output instruction of the PID control circuit.

[0015] Preferably, the PID control circuit further includes an adaptive learning algorithm capable of automatically optimizing the PID parameters according to historical operation data.

[0016] Technical effects and advantages of the present utility model: For this high-precision temperature-controlled hot melt kettle temperature control system, by using heat transfer oil as the heat transfer medium, the system can transfer heat to the hot melt kettle more evenly and stably, ensuring the temperature control accuracy during the melting process of the hot melt coating. The heat transfer oil heating system can more efficiently manage and optimize the distribution and use of thermal energy through the design of a multi-stage heat exchanger and an intelligent flow dividing valve, reducing energy waste and improving energy utilization efficiency. At the same time, the coordinated operation of the intelligent flow dividing valve and the heat transfer oil circulation pump ensures a uniform temperature distribution in the hot melt kettle, avoiding local overheating or overcooling, thereby improving the reliability and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0018] Figure 2 is a temperature control system diagram of the present utility model.

[0019] In the figure: 1, hot melt kettle; 2, heating tank; 3, heat transfer oil circulation pump; 4, intelligent flow dividing valve; 5, temperature sensor; 6, PID control circuit; 7, intelligent execution module; 8, current adjustment module; 9, voltage adjustment module; 10, fault detection module; 11, standby execution module; 12, temperature data recorder; 13, wireless communication module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model.

[0021] Refer to Figure 1 and Figure 2As shown, a hot melt kettle 1, which is a container for melting hot melt coatings and is designed and made of materials that can withstand high temperatures and pressures. A heat transfer oil heating system, including a heating tank 2, a heat transfer oil circulation pump 3, and an intelligent flow dividing valve 4. The heating tank 2 is filled with heat transfer oil, and the heat is circulated and transferred to the hot melt kettle 1 through the heat transfer oil circulation pump 3. The intelligent flow dividing valve 4 is used to control the flow direction of the heat transfer oil; a temperature monitoring circuit, including at least three distributed temperature sensors 5, which are respectively arranged at the feed inlet, the discharge outlet, and the bottom of the hot melt kettle 1 to monitor the temperature distribution in the hot melt kettle 1 in real time; a PID control circuit 6, which receives the signals from the temperature monitoring circuit and outputs control signals to the intelligent flow dividing valve 4 and the heat transfer oil circulation pump 3 of the heat transfer oil heating system. By using heat transfer oil as the heat transfer medium, the system can transfer heat to the hot melt kettle 1 more evenly and stably, ensuring the temperature control accuracy during the melting process of the hot melt coating, which is crucial for improving the quality of the final product. Through the design of a multi-stage heat exchanger and the intelligent flow dividing valve 4, the heat transfer oil heating system can manage and optimize the distribution and use of thermal energy more efficiently, reduce energy waste, and improve energy utilization efficiency. At the same time, the coordinated operation of the intelligent flow dividing valve 4 and the heat transfer oil circulation pump 3 ensures a uniform temperature distribution in the hot melt kettle 1.

[0022] Further, the heating tank 2 is arranged below the hot-melt kettle 1 and has a spherical structure, filled with heat-conducting oil inside. The heating tank 2 is provided with an outlet and an inlet for heat-conducting oil to realize the inlet and outlet circulation of the heat-conducting oil. The heat-conducting oil heating system further includes an expansion tank and a multi-stage heat exchanger. The expansion tank is used to collect the heat-conducting oil expanded due to temperature rise in the hot-melt kettle 1, and the multi-stage heat exchanger is used to improve the heat efficiency. The intelligent flow-dividing valve 4 includes at least two independently controlled flow-dividing channels, which are used to adjust the flow direction and flow rate of the heat-conducting oil according to the signal output instruction of the PID control circuit 6. It includes an intelligent execution module 7. The intelligent execution module 7 includes at least one current adjustment module 8 and a voltage adjustment module 9, which control the heating power and circulation flow rate of the heat-conducting oil heating system according to the output signal of the PID control circuit 6. The intelligent execution module 7 further includes a fault detection module 10, which is used to monitor the working state of the execution module and automatically switch to the standby execution module 11 when an abnormality is detected. The temperature monitoring single circuit further includes a temperature data recorder 12, which is used to store the temperature history data for at least one month and send it to the remote server through the wireless communication module 13. The PID control circuit 6 further includes an adaptive learning algorithm, which can automatically optimize the PID parameters according to the historical operation data. The application of the adaptive learning algorithm in the PID control unit is mainly to automatically adjust the proportional (P), integral (I), and derivative (D) parameters of the PID controller by real-time analyzing the performance and error of the system to achieve a better control effect. The PID control module is composed of a proportional (P) link, an integral (I), and a derivative (D) link, which is implemented by a microprocessor or a digital signal processor (DSP), and the PID control logic is realized through programming. The algorithm receives the feedback signal from the temperature sensor 5, calculates the error, and generates a control signal according to the PID parameters to adjust the operation of the heat-conducting oil heating system. The output of the PID control circuit 6 is a control signal, which directly controls the intelligent execution module 7, such as adjusting the rotation speed of the heat-conducting oil circulation pump 3 or changing the heating power of the heating tank 2, so as to achieve precise control of the temperature of the hot-melt kettle 1.

[0023] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention.

Claims

1. A high-precision temperature-controlled hot melt kettle temperature control system, characterized in that, Comprising: A hot-melt kettle (1) for melting hot-melt coatings; A heat-conducting oil heating system, including a heating tank (2), a heat-conducting oil circulation pump (3), and an intelligent flow control valve (4). The heating tank (2) is filled with heat-conducting oil, and the heat is circulated and transferred to the hot-melt kettle (1) through the heat-conducting oil circulation pump (3). The intelligent flow control valve (4) is used to control the flow direction of the heat-conducting oil; A temperature monitoring circuit, including at least three distributed temperature sensors (5), which are respectively arranged at the feed inlet, the discharge outlet, and the bottom of the hot-melt kettle (1) for real-time monitoring of the temperature distribution inside the hot-melt kettle (1); A PID control circuit (6) receives the signals from the temperature monitoring circuit and outputs control signals to the intelligent flow control valve (4) and the heat-conducting oil circulation pump (3) of the heat-conducting oil heating system.

2. The high-precision temperature control hot melt kettle temperature control system according to claim 1, wherein: The heating tank (2) is arranged below the hot-melt kettle (1) and has a spherical structure, filled with heat-conducting oil. The heating tank (2) is provided with a heat-conducting oil outlet and an inlet for realizing the in-and-out circulation of the heat-conducting oil.

3. The high-precision temperature control hot melt kettle temperature control system according to claim 1, wherein: Comprising an intelligent execution module (7), the intelligent execution module (7) includes at least one current regulation module (8) and a voltage regulation module (9), which control the heating power and the circulation flow rate of the heat-conducting oil heating system according to the output signals of the PID control circuit (6).

4. The high-precision temperature control hot melt kettle temperature control system according to claim 3, characterized in that: The intelligent execution module (7) further includes a fault detection module (10) for monitoring the working state of the execution module and automatically switching to a standby execution module (11) when an abnormality is detected.

5. The high-precision temperature control hot melt kettle temperature control system according to claim 1, characterized in that: The temperature monitoring single channel further includes a temperature data recorder (12) for storing the temperature historical data for at least one month and sending it to a remote server through a wireless communication module (13).

6. The high-precision temperature control hot melt kettle temperature control system according to claim 1, wherein: The intelligent flow control valve (4) includes at least two independently controlled flow channels for adjusting the flow direction and flow rate of the heat-conducting oil according to the signals output by the PID control circuit (6).

7. The high-precision temperature control hot melt kettle temperature control system according to claim 1, characterized in that: The PID control circuit (6) further includes an adaptive learning algorithm, which can automatically optimize the PID parameters according to the historical operation data.

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