Novel electromagnetic valve driving device

Abstract

The utility model discloses a novel electromagnetic valve driving device, which can accurately regulate and control the opening and closing states of an electromagnetic valve through the accurate power supply control of an electromagnetic valve control unit on an electromagnetic valve regulating unit, so that the accurate control not only improves the overall control accuracy of the driving device, but also improves the reliability of the driving device. The electromagnetic valve can keep stable performance under different working conditions, meanwhile, through design optimization of the electromagnetic valve adjusting unit and tight connection between the movable core and the electromagnetic valve coil and between the movable core and the electromagnetic valve plug, the whole driving device can respond rapidly after receiving a control signal, rapid opening or closing of the valve is achieved, and in addition, the electromagnetic valve adjusting unit is suitable for large-scale popularization and application. The flowing liquid is arranged in the electromagnetic valve plug, the magnetic force provided by the electromagnetic valve coil can be reduced under the action of the liquid, the magnetic force is reduced by reducing the voltage of the electromagnetic valve coil, and the heating value of the electromagnetic valve coil is also reduced under the lower voltage, so that the defect of serious heating of the coil in the prior art is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valve driving, in particular to a novel electromagnetic valve driving device. Background Art

[0002] As an automation component that controls the flow of fluid through electromagnetic force, solenoid valves play a vital role in many fields such as industrial automation, automobile manufacturing, environmental engineering, medical equipment, etc. They adjust the flow, direction, pressure and other parameters of fluid media (such as water, oil, gas, etc.) by accurately controlling the opening and closing of valves. Although solenoid valve technology has made significant progress, there are still certain limitations in some aspects. First, the control accuracy and response speed of traditional solenoid valves are limited, and it is difficult to meet the high-precision control requirements under complex working conditions. Secondly, after the solenoid valve is started, the coil heats up severely, affecting the service life of the solenoid valve. At the same time, the power consumption is also relatively high. Utility Model Content

[0003] In view of this, the utility model proposes a novel solenoid valve driving device, which can solve the defects of the prior art such as limited control accuracy and response speed, and serious coil heating.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A new type of solenoid valve driving device includes a solenoid valve control unit and a solenoid valve regulating unit. The solenoid valve control unit is used to control the power supply of the solenoid valve regulating unit. The solenoid valve regulating unit includes a solenoid valve coil, a moving core, a spring and a solenoid valve plug. One end of the spring is fixedly connected to the valve, and the other end is fixedly connected to the solenoid valve coil. One end of the moving core is arranged inside the solenoid valve coil, and the other end is fixedly connected to the solenoid valve plug. A flowing liquid is arranged inside the solenoid valve plug.

[0006] As a further optional scheme for the new solenoid valve driving device, the solenoid valve control unit includes a single-chip microcomputer control module, a power conversion module and a MOS tube switch control module, the power conversion module and the MOS tube switch control module are electrically connected to the DC power supply respectively, and the single-chip microcomputer control module is electrically connected to the power conversion module and the MOS tube switch control module respectively.

[0007] As a further optional solution of the novel solenoid valve driving device, the solenoid valve control unit further includes a temperature detection module, and the temperature detection module is electrically connected to the single-chip control module.

[0008] As a further optional solution of the novel solenoid valve driving device, the solenoid valve control unit also includes a communication module, the power conversion module is connected to the communication module, and the single-chip control module is connected to the host computer through the communication module.

[0009] As a further optional solution of the novel solenoid valve driving device, the single-chip microcomputer control module includes an AT32F421 G8U7 chip and its peripheral circuits.

[0010] As a further optional solution of the novel solenoid valve driving device, the power conversion module includes an LM317 chip and its peripheral circuits and an XC6206 chip and its peripheral circuits.

[0011] As a further optional solution of the novel solenoid valve driving device, the MOS tube switch control module includes a UCC27324 chip and its peripheral circuits.

[0012] As a further optional solution of the novel solenoid valve driving device, the communication module includes a YD3082E chip and its peripheral circuits.

[0013] The beneficial effect of the utility model is that through the precise power supply control of the solenoid valve regulating unit by the solenoid valve control unit, the opening and closing state of the solenoid valve can be accurately regulated. This precise control not only improves the overall control accuracy of the drive device, but also enables the solenoid valve to maintain stable performance under different working conditions. At the same time, through the design optimization of the solenoid valve regulating unit, the close connection between the moving core and the solenoid valve coil and the solenoid valve plug enables the entire drive device to respond quickly after receiving the control signal to achieve rapid opening or closing of the valve. In addition, a flowing liquid is arranged inside the solenoid valve plug. Under the action of the liquid, the magnetic force provided by the solenoid valve coil can be reduced. The magnetic force is reduced by reducing the solenoid valve coil voltage. Under a lower voltage, the heat generated by the solenoid valve coil will also be reduced, thereby solving the serious defect of coil heating in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a circuit schematic diagram of a new type of solenoid valve drive device of the utility model;

[0016] Figure 2It is the circuit principle diagram of the single chip microcomputer control module in the utility model;

[0017] Figure 3 This is a circuit diagram of the power conversion module in the utility model;

[0018] Figure 4 This is a circuit schematic diagram of the MOS tube switch control module in the utility model;

[0019] Figure 5 This is a circuit schematic diagram of the communication module in the utility model;

[0020] Figure 6 This is a circuit schematic diagram of the temperature detection module in the utility model. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] refer to Figure 1-6 A new type of solenoid valve driving device includes a solenoid valve control unit and a solenoid valve regulating unit. The solenoid valve control unit is used to control the power supply of the solenoid valve regulating unit. The solenoid valve regulating unit includes a solenoid valve coil, a moving core, a spring and a solenoid valve plug. One end of the spring is fixedly connected to the valve, and the other end is fixedly connected to the solenoid valve coil. One end of the moving core is arranged inside the solenoid valve coil, and the other end is fixedly connected to the solenoid valve plug. A flowing liquid is arranged inside the solenoid valve plug.

[0023] In this embodiment, the precise power supply control of the solenoid valve regulating unit by the solenoid valve control unit can achieve precise regulation of the opening and closing state of the solenoid valve. This precise control not only improves the overall control accuracy of the drive device, but also enables the solenoid valve to maintain stable performance under different working conditions. At the same time, through the design optimization of the solenoid valve regulating unit, the close connection between the moving core and the solenoid valve coil and the solenoid valve plug enables the entire drive device to respond quickly after receiving the control signal to achieve rapid opening or closing of the valve. In addition, a flowing liquid is arranged inside the solenoid valve plug. Under the action of the liquid, the magnetic force provided by the solenoid valve coil can be reduced. The magnetic force is reduced by reducing the solenoid valve coil voltage. Under a lower voltage, the heat generated by the solenoid valve coil will also be reduced, thereby solving the serious defect of coil heating in the prior art.

[0024] It should be noted that when the solenoid valve coil is not powered on, the spring deformation generates an extension force, which closes the valve; when the solenoid valve coil is powered on, the solenoid valve coil is powered on and forms an electromagnet effect with the internal part of the moving core. Under the action of magnetic force, the moving core moves in the direction of filling the coil, thereby overcoming the extension force of the spring, compressing the spring, and opening the valve. After the liquid solenoid valve is opened, the presence of liquid provides part of the extension force generated by the spring deformation. In practical applications, two voltages can be used to control the coil. The higher voltage is called the starting voltage of the solenoid valve coil. Only when it meets the deformation extension force of the spring can the valve be opened; the other lower voltage is called the maintenance voltage of the solenoid valve coil. Under the action of liquid, the magnetic force provided by the solenoid valve coil can be reduced. The magnetic force can be reduced by reducing the solenoid valve coil voltage. At a lower voltage, according to Ohm's law, the current is reduced, so the heat generation of the solenoid valve coil is reduced, effectively reducing the heat generation and power consumption of the equipment. In addition, for liquids of different viscosities and different hydraulic pressures, this design can adjust the voltage ratio to achieve adaptation.

[0025] Preferably, the solenoid valve control unit includes a single-chip microcomputer control module, a power conversion module and a MOS tube switch control module, the power conversion module and the MOS tube switch control module are electrically connected to the DC power supply respectively, and the single-chip microcomputer control module is electrically connected to the power conversion module and the MOS tube switch control module respectively.

[0026] In this embodiment, the power conversion module is used to convert the DC power supply into the voltage and current required by the single-chip microcomputer control module, the MOS tube switch control module is used to complete the switching action in a very short time, thereby realizing the power supply to the solenoid valve coil, and the single-chip microcomputer control module is used to control the switching action of the MOS tube switch control module; with the single-chip microcomputer as the control core, it is capable of receiving and processing external instructions or sensor signals, and issuing precise control signals accordingly. This high-precision control makes the switching action of the solenoid valve more accurate and reliable, and different control logics and parameters can be set according to actual needs to realize intelligent management of the solenoid valve. For example, timing switches, flow control strategies, etc. can be set to facilitate connection and communication with other devices or systems, thereby expanding the functions and application scope of the drive device; the power conversion module is responsible for converting the DC power supply into the voltage and current required by the single-chip control module to ensure that the single-chip control module can work stably. Through precise voltage and current regulation, the service life of the single-chip control module can be extended and its working efficiency can be improved. It also has overvoltage, overcurrent, short circuit and other protection mechanisms, which can automatically cut off the power supply under abnormal conditions to protect the solenoid valve and control system from damage; the MOS tube has low power consumption in the on and off states, which helps to reduce the energy consumption of the entire drive device. The MOS tube can withstand large currents and voltages and is suitable for driving solenoid valves of various types and specifications.

[0027] Preferably, the solenoid valve control unit further includes a temperature detection module, and the temperature detection module is electrically connected to the single-chip control module.

[0028] In this embodiment, the temperature detection module is used to detect the temperature data of the solenoid valve coil in real time. By monitoring the temperature in real time, the single-chip microcomputer control module can obtain the working status and environmental conditions of the solenoid valve, thereby optimizing the control strategy. For example, when the temperature is too high, the switching frequency or duty cycle of the solenoid valve can be adjusted to reduce heat generation; in addition, the temperature data of the solenoid valve coil is monitored in real time. When it is detected that the temperature is too high, this information can be immediately fed back to the single-chip microcomputer control module. The single-chip microcomputer control module makes a judgment based on a preset temperature threshold. If the temperature exceeds the safe range, the power supply can be automatically cut off or other protective measures can be taken to prevent the solenoid valve from being damaged or causing a safety accident due to overheating.

[0029] Preferably, the solenoid valve control unit further includes a communication module, the power conversion module is connected to the communication module, and the single-chip microcomputer control module is communicatively connected to the host computer via the communication module.

[0030] In this embodiment, the addition of the communication module enables the solenoid valve control unit to communicate with the host computer (such as PLC, PC or other intelligent devices) in real time, which allows the user to remotely monitor the working status of the solenoid valve, including switch status, current and voltage and other parameters, and receive fault alarm information from the solenoid valve. At the same time, the user can also send control instructions through the host computer to remotely adjust the switch status of the solenoid valve or adjust the control parameters, thereby improving the flexibility and convenience of the drive device; through the communication connection with the host computer, the solenoid valve control unit can upload its working status and fault information in real time. By analyzing and processing this information, the host computer can promptly discover and warn of potential fault problems, provide maintenance personnel with accurate fault location and maintenance guidance, and shorten the time for fault detection and repair.

[0031] Preferably, the single-chip microcomputer control module includes an AT32F421G8U7 chip and its peripheral circuits.

[0032] In this embodiment, the ADC_TEMP network node collects the analog voltage value of the current state circuit through the temperature detection module, and the collected analog voltage value is converted into a digital signal. The AT32F421G8U7 chip calculates the current temperature value based on the converted digital signal; the AT32F421G8U7 chip generates a PWM (pulse width modulation) signal through the MCU_PWM_CH1 network node. The duty cycle of the signal is adjustable and is used to control the on time of the MOS tube, thereby achieving precise control of the solenoid valve or other loads. The MOS tube is driven to work through the PWM signal. The on and off states of the MOS tube are determined by the duty cycle of the PWM signal, thereby controlling the switch state of the solenoid valve or adjusting its working parameters; the single-chip computer realizes serial port communication with the host computer or other devices through the MCU_U1_RX and MCU_U1_TX network nodes.

[0033] Preferably, the power conversion module includes an LM317 chip and its peripheral circuits and an XC6206 chip and its peripheral circuits.

[0034] In this embodiment, the LM317 chip achieves precise control of the output voltage through its internal error amplifier, adjustment tube, reference voltage source and startup circuit and other components. The required output voltage value can be set by adjusting the resistor voltage divider network between the output end and the adjustment end. In this example, the resistor network is set to generate an output voltage of 5V. The converted 5V voltage is mainly used to drive the MOS tube (through the MOS driver IC) and as the input voltage of the subsequent step-down circuit; the XC6206 chip stably converts the input 5V voltage into a 3.3V output through the internal integrated reference voltage source, error amplifier, power adjustment tube and other components. Its low voltage difference characteristic means that when the load current changes, the output voltage can remain relatively stable and the power consumption is low. The converted 3.3V voltage is mainly used for components that require low voltage power supply, such as the microcontroller control module, communication module and temperature detection module.

[0035] Preferably, the MOS tube switch control module includes a UCC27324 chip and its peripheral circuits.

[0036] In this embodiment, the UCC27324 chip is an ultra-high-speed, high-current gate driver chip for low-side MOSFET, the IRF7470 is a field-effect transistor MOSFET, the network node OUT_1 of the UCC27324DR_C5804614 chip is a gate driver used to control the field-effect transistor MOSFET to turn on or off the ground of the final output, and the AT32F421 G8U7 chip controls the UCC27324 chip through the MCU_PWM_CH1 network node PWM signal to quickly turn on or off the field-effect transistor MOSFET, and D9 is a fast switching diode used to protect the circuit from reverse voltage shocks.

[0037] Preferably, the communication module includes a YD3082E chip and its peripheral circuits.

[0038] In this embodiment, the YD3082E chip is a 485 interface chip, and its purpose is to convert 485 signals into TTL signals, so as to realize that the TTL serial port of the AT32F421G8U7 chip is converted into a 485 interface.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of solenoid valve driving device, characterized in that: It includes a solenoid valve control unit and a solenoid valve regulating unit. The solenoid valve control unit is used to control the power supply of the solenoid valve regulating unit. The solenoid valve regulating unit includes a solenoid valve coil, a moving core, a spring and a solenoid valve plug. One end of the spring is fixedly connected to the valve, and the other end is fixedly connected to the solenoid valve coil. One end of the moving core is arranged inside the solenoid valve coil, and the other end is fixedly connected to the solenoid valve plug. A flowing liquid is arranged inside the solenoid valve plug.

2. A new electromagnetic valve driving device according to claim 1, characterized in that: The solenoid valve control unit includes a single-chip control module, a power conversion module and a MOS tube switch control module, the power conversion module and the MOS tube switch control module are electrically connected to the DC power supply respectively, and the single-chip control module is electrically connected to the power conversion module and the MOS tube switch control module respectively.

3. A new electromagnetic valve driving device according to claim 2, characterized in that: The solenoid valve control unit also includes a temperature detection module, and the temperature detection module is electrically connected to the single-chip control module.

4. A new electromagnetic valve driving device according to claim 3, characterized in that: The solenoid valve control unit also includes a communication module, the power conversion module is connected to the communication module, and the single-chip control module is connected to the host computer through the communication module.

5. A new electromagnetic valve driving device according to claim 4, characterized in that: The single-chip microcomputer control module comprises an AT32F421G8U7 chip and its peripheral circuits.

6. A new electromagnetic valve driving device according to claim 5, characterized in that: The power conversion module includes an LM317 chip and its peripheral circuits and an XC6206 chip and its peripheral circuits.

7. A new electromagnetic valve driving device according to claim 6, characterized in that: The MOS tube switch control module includes a UCC27324 chip and its peripheral circuits.

8. A new electromagnetic valve driving device according to claim 7, characterized in that: The communication module includes a YD3082E chip and its peripheral circuits.

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