Electromagnetic valve energy-saving module

Abstract

The utility model discloses an electromagnetic valve energy-saving module which comprises a protection circuit, a constant current drive circuit, an acquisition circuit, a voltage-stabilizing filter circuit, a main control chip U1, a triode Q4, an MOS tube Q2, a resistor R6, a resistor R9, a resistor R10, a triode Q5 and a resistor R5. The output end of the protection circuit is electrically connected with the input end of the constant current drive circuit, the input end of the voltage stabilization filter circuit and the input end of the acquisition circuit, the output end of the voltage stabilization filter circuit is electrically connected with the main control chip U1, the output end of the acquisition circuit is electrically connected with the main control chip U1, and the source electrode of the MOS tube Q2 is electrically connected with the output end of the protection circuit. The drain electrode of the MOS tube Q2 is electrically connected with the electromagnetic valve, one end of the resistor R5 is electrically connected with the main control chip U1, and the other end of the resistor R5 is electrically connected with the base electrode of the triode Q5. According to the utility model, the driving current is actively reduced after the electromagnetic valve is actuated, so that the energy-saving and cooling effects of the electromagnetic valve are realized, and the service life of the electromagnetic valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of solenoid valves, in particular to a solenoid valve energy-saving module. Background Art

[0002] A solenoid valve is a device that uses electromagnetic principles to control the flow of liquid or gas. It is a basic automation component commonly used in industrial control systems. When the solenoid valve is not energized, the moving iron core and the static iron core in the coil are in a separated state. After power is applied, the static iron core generates a magnetic field under the action of the coil to attract the moving iron core, causing the moving iron core and the static iron core to be attracted together. Since the farther the moving iron core and the static iron core are separated, the greater the magnetic field required for attraction, the solenoid valve requires relatively large power when attracted. However, after the moving and static iron cores are attracted, only a small power is needed to maintain the attracted state.

[0003] Existing solenoid valves only have coils and no control function, and cannot be adjusted. Therefore, after being attracted, they still maintain the high power when not attracted. However, high power is not needed after being attracted, so not only does it waste electricity but also causes serious self-heating, which shortens the service life of the solenoid valve. Utility Model Content

[0004] The purpose of the present utility model is to provide a solenoid valve energy-saving module to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an energy-saving module for an electromagnetic valve, comprising a protection circuit, a constant current drive circuit, an acquisition circuit, a voltage stabilizing filter circuit, a main control chip U1, a transistor Q4, a MOS tube Q2, a resistor R6, a resistor R9, a resistor R10, a transistor Q5 and a resistor R5, wherein the output end of the protection circuit is electrically connected to the input end of the constant current drive circuit, the input end of the voltage stabilizing filter circuit and the input end of the acquisition circuit respectively, the output end of the voltage stabilizing filter circuit is electrically connected to the main control chip U1, the output end of the acquisition circuit is electrically connected to the main control chip U1, the source of the MOS tube Q2 is electrically connected to the output end of the protection circuit, the drain of the MOS tube Q2 is electrically connected to the electromagnetic valve, one end of the resistor R5 is electrically connected to the main control chip U1, the other end of the resistor R5 is electrically connected to the base of the transistor Q5, the emitter of the transistor Q5 is electrically connected to the resistor R6, the other end of the resistor R6 is electrically connected to the gate of the MOS tube Q2, and one end of the resistor R9 is electrically connected to the transistor Q5. The collector of the transistor Q5 is electrically connected, the other end of the resistor R9 is electrically connected to the base of the transistor Q4, one end of the resistor R10 is electrically connected to the emitter of the transistor Q4, the other end of the resistor R10 is electrically connected to the collector of the transistor Q5, the collector of the transistor Q4 is electrically connected to the gate of the MOS transistor Q2, the constant current drive circuit includes a resistor R4, a transistor Q1, a transistor Q3 and a resistor R7, the collector of the transistor Q1 is electrically connected to the protection circuit, the transistor Q The emitter of the transistor 1 is connected to the collector of the transistor Q3 and the resistor R7, the base of the transistor Q1 is connected to the collector of the transistor Q3, the emitter of the transistor Q3 is electrically connected to the solenoid valve, one end of the resistor R7 is electrically connected to the emitter of the transistor Q1, and the other end of the resistor R7 is electrically connected to the emitter of the transistor Q3, one end of the resistor R4 is electrically connected to the collector of the transistor Q1, and the other end of the resistor R4 is electrically connected to the base of the transistor Q1 and the collector of the transistor Q3.

[0006] As a preferred solution of the present utility model, the protection circuit includes a rectifier diode D1, a voltage regulator diode D2 and a capacitor C2, the anode of the rectifier diode D1 is electrically connected to the positive electrode of the power supply, the cathode of the voltage regulator diode D2 is electrically connected to the cathode of the rectifier diode D1, one end of the capacitor C2 is electrically connected to the cathode of the rectifier diode D1, and the other end of the capacitor C2 is grounded.

[0007] As a preferred solution of the present utility model, the acquisition circuit includes a resistor R1, a resistor R2, a resistor R3, and a capacitor C1. One end of the resistor R1 is electrically connected to the main control chip U1 and the capacitor C1, and the other end of the resistor R1 is electrically connected to the resistor R3 and the resistor R2. One end of the resistor R2 is electrically connected to the protection circuit, and the other end of the resistor R2 is electrically connected to the resistor R1 and the resistor R3. One end of the resistor R3 is electrically connected to the resistor R1 and the resistor R2, and the other end of the resistor R3 is grounded. One end of the capacitor C1 is electrically connected to the resistor R1 and the main control chip U1, and the other end of the capacitor C1 is grounded.

[0008] As a preferred solution of the present utility model, the voltage stabilizing filter circuit includes a voltage stabilizing chip U3, a capacitor C3 and a capacitor C4. The input end of the voltage stabilizing chip U3 is electrically connected to the protection circuit, and the output end of the voltage stabilizing chip U3 is connected to the main control chip U1, the capacitor C3 and the capacitor C4. One end of the capacitor C3 is electrically connected to the main control chip U1, and the other end of the capacitor C3 is grounded. One end of the capacitor C4 is electrically connected to the capacitor C3, and the other end of the capacitor C4 is grounded.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. The utility model actively reduces the driving current after the solenoid valve is closed, thereby achieving the effects of energy saving and cooling of the solenoid valve and extending the service life of the solenoid valve.

[0011] 2. The utility model adopts constant current drive, so that when the power supply voltage fluctuates to 50% of the rated voltage, it can still automatically adjust to maintain the output power unchanged, ensuring its reliability.

[0012] 3. The utility model adopts digital chip control to eliminate the time deviation caused by capacitor charging and discharging, and has a voltage detection function, which can achieve high-speed on-off control of 25 times per second. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] See also Figure 1The utility model provides a technical solution: an energy-saving module for a solenoid valve, including a protection circuit, a constant current drive circuit, a collection circuit, a voltage stabilizing filter circuit, a main control chip U1, a transistor Q4, a MOS tube Q2, a resistor R6, a resistor R9, a resistor R10, a transistor Q5 and a resistor R5. The voltage stabilizing filter circuit is used to power the main control chip U1. The output end of the protection circuit is electrically connected to the input end of the constant current drive circuit, the input end of the voltage stabilizing filter circuit and the input end of the collection circuit respectively. The output end of the voltage stabilizing filter circuit is electrically connected to the main control chip U1. The output end of the acquisition circuit is electrically connected to the main control chip U1, the source of the MOS tube Q2 is electrically connected to the output end of the protection circuit, the drain of the MOS tube Q2 is electrically connected to the solenoid valve, one end of the resistor R5 is electrically connected to the main control chip U1, the other end of the resistor R5 is electrically connected to the base of the transistor Q5, the emitter of the transistor Q5 is electrically connected to the resistor R6, the other end of the resistor R6 is electrically connected to the gate of the MOS tube Q2, one end of the resistor R9 is electrically connected to the collector of the transistor Q5, and the other end of the resistor R9 is electrically connected to the gate of the MOS tube Q2. The transistor Q4 is electrically connected to the base, one end of the resistor R10 is electrically connected to the emitter of the transistor Q4, the other end of the resistor R10 is electrically connected to the collector of the transistor Q5, the collector of the transistor Q4 is electrically connected to the gate of the MOS transistor Q2, the constant current drive circuit includes a resistor R4, a transistor Q1, a transistor Q3 and a resistor R7, the collector of the transistor Q1 is electrically connected to the protection circuit, the emitter of the transistor Q1 is connected to the collector of the transistor Q3 and the resistor R7, the base of the transistor Q1 is connected to the transistor Q3 The collector of the transistor Q3 is electrically connected, the emitter of the transistor Q3 is electrically connected to the solenoid valve, one end of the resistor R7 is electrically connected to the emitter of the transistor Q1, and the other end of the resistor R7 is electrically connected to the emitter of the transistor Q3. One end of the resistor R4 is electrically connected to the collector of the transistor Q1, and the other end of the resistor R4 is electrically connected to the base of the transistor Q1 and the collector of the transistor Q3. The model of the main control chip U1 is STC8G1K08A-36I-SOP8, and STC8G1K08A-36I-SOP8 is a digital chip.

[0016] The protection circuit includes a rectifier diode D1, a voltage regulator diode D2 and a capacitor C2. The anode of the rectifier diode D1 is electrically connected to the positive electrode of the power supply, the cathode of the voltage regulator diode D2 is electrically connected to the cathode of the rectifier diode D1, one end of the capacitor C2 is electrically connected to the cathode of the rectifier diode D1, and the other end of the capacitor C2 is grounded.

[0017] Among them, the acquisition circuit includes resistor R1, resistor R2, resistor R3, and capacitor C1. The resistor R1, resistor R2, resistor R3, and capacitor C1 constitute the signal conversion of the power supply voltage and send it to the main control chip U1 to collect the power supply voltage. The main control chip U1 analyzes the collected voltage signal and controls the output of the signal according to preset rules. One end of the resistor R1 is electrically connected to the main control chip U1 and the capacitor C1, and the other end of the resistor R1 is electrically connected to the resistor R3 and the resistor R2. One end of the resistor R2 is electrically connected to the protection circuit, and the other end of the resistor R2 is electrically connected to the resistor R1 and the resistor R3. One end of the resistor R3 is electrically connected to the resistor R1 and the resistor R2. The other end of the resistor R3 is grounded. One end of the capacitor C1 is electrically connected to the resistor R1 and the main control chip U1, and the other end of the capacitor C1 is grounded.

[0018] Among them, the voltage stabilizing and filtering circuit includes a voltage stabilizing chip U3, a capacitor C3 and a capacitor C4. The input end of the voltage stabilizing chip U3 is electrically connected to the protection circuit, and the output end of the voltage stabilizing chip U3 is connected to the main control chip U1, the capacitor C3 and the capacitor C4. One end of the capacitor C3 is electrically connected to the main control chip U1, and the other end of the capacitor C3 is grounded. One end of the capacitor C4 is electrically connected to the capacitor C3, and the other end of the capacitor C4 is grounded. The model of the voltage stabilizing chip U3 is MC7805CDTRKG.

[0019] Specifically, the power supply is supplied to the module through the polarity protection, surge overvoltage protection and filtering composed of the rectifier diode D1, the voltage regulator diode D2 and the capacitor C2. In the initial state, the main control chip U1 has no output signal, so the transistor Q5 is not turned on, and the base of the transistor Q4 is pulled up by the resistor R10, so the transistor Q4 is also not turned on. The gate of the MOS tube Q2 is pulled down to 0V by the resistor R6, so the transistor Q2 is turned on. The power supply is supplied to the solenoid valve through the transistor Q2. At this time, the solenoid valve obtains the maximum voltage and drives the coil to work with the maximum power. When the solenoid valve is energized and attracted for 10ms, the main control chip U1 starts to work and the output signal passes through Resistor R5 drives transistor Q5 to turn on, and transistor Q5 drives transistor Q4 to turn on through resistor R9. The gate voltage of MOS tube Q2 is pulled high by transistor Q4, so transistor Q2 is not turned on. Therefore, the power supply cannot supply power to the solenoid valve through transistor Q2. At this time, the power supply provides constant current power supply to the solenoid valve through the constant current drive circuit composed of resistor R4, transistor Q1, transistor Q3, and resistor R7. The current size is adjusted by resistor R7. At this time, the solenoid valve obtains 50% of the rated current to maintain the attraction of the iron core and the coil, achieving the energy-saving effect of long-term operation of the solenoid valve with only 25% of the rated power when the solenoid valve is working.

[0020] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solenoid valve energy-saving module, characterized in that: The invention comprises a protection circuit, a constant current drive circuit, an acquisition circuit, a voltage stabilizing filter circuit, a main control chip U1, a transistor Q4, a MOS transistor Q2, a resistor R6, a resistor R9, a resistor R10, a transistor Q5 and a resistor R5. The output end of the protection circuit is electrically connected to the input end of the constant current drive circuit, the input end of the voltage stabilizing filter circuit and the input end of the acquisition circuit respectively. The output end of the voltage stabilizing filter circuit is electrically connected to the main control chip U1, the output end of the acquisition circuit is electrically connected to the main control chip U1, the source of the MOS transistor Q2 is electrically connected to the output end of the protection circuit, the drain of the MOS transistor Q2 is electrically connected to the solenoid valve, one end of the resistor R5 is electrically connected to the main control chip U1, the other end of the resistor R5 is electrically connected to the base of the transistor Q5, the emitter of the transistor Q5 is electrically connected to the resistor R6, the other end of the resistor R6 is electrically connected to the gate of the MOS transistor Q2, one end of the resistor R9 is electrically connected to the collector of the transistor Q5, and the resistor The other end of R9 is electrically connected to the base of the transistor Q4, one end of the resistor R10 is electrically connected to the emitter of the transistor Q4, the other end of the resistor R10 is electrically connected to the collector of the transistor Q5, the collector of the transistor Q4 is electrically connected to the gate of the MOS transistor Q2, the constant current drive circuit includes resistor R4, transistor Q1, transistor Q3 and resistor R7, the collector of the transistor Q1 is electrically connected to the protection circuit, the emitter of the transistor Q1 is electrically connected to the transistor Q5, and the collector of the transistor Q5 is electrically connected to the gate of the MOS transistor Q2. The collector of the transistor Q3 is connected to the resistor R7, the base of the transistor Q1 is connected to the collector of the transistor Q3, the emitter of the transistor Q3 is electrically connected to the solenoid valve, one end of the resistor R7 is electrically connected to the emitter of the transistor Q1, and the other end of the resistor R7 is electrically connected to the emitter of the transistor Q3, one end of the resistor R4 is electrically connected to the collector of the transistor Q1, and the other end of the resistor R4 is electrically connected to the base of the transistor Q1 and the collector of the transistor Q3.

2. The solenoid valve energy-saving module according to claim 1, characterized in that: The protection circuit includes a rectifier diode D1, a voltage regulator diode D2 and a capacitor C2. The anode of the rectifier diode D1 is electrically connected to the positive electrode of the power supply, the cathode of the voltage regulator diode D2 is electrically connected to the cathode of the rectifier diode D1, one end of the capacitor C2 is electrically connected to the cathode of the rectifier diode D1, and the other end of the capacitor C2 is grounded.

3. The solenoid valve energy-saving module according to claim 1, characterized in that: The acquisition circuit includes a resistor R1, a resistor R2, a resistor R3, and a capacitor C1. One end of the resistor R1 is electrically connected to the main control chip U1 and the capacitor C1, and the other end of the resistor R1 is electrically connected to the resistor R3 and the resistor R2. One end of the resistor R2 is electrically connected to the protection circuit, and the other end of the resistor R2 is electrically connected to the resistor R1 and the resistor R3. One end of the resistor R3 is electrically connected to the resistor R1 and the resistor R2, and the other end of the resistor R3 is grounded. One end of the capacitor C1 is electrically connected to the resistor R1 and the main control chip U1, and the other end of the capacitor C1 is grounded.

4. The solenoid valve energy-saving module according to claim 1, characterized in that: The voltage stabilizing filter circuit includes a voltage stabilizing chip U3, a capacitor C3 and a capacitor C4. The input end of the voltage stabilizing chip U3 is electrically connected to the protection circuit, and the output end of the voltage stabilizing chip U3 is connected to the main control chip U1, the capacitor C3 and the capacitor C4. One end of the capacitor C3 is electrically connected to the main control chip U1, and the other end of the capacitor C3 is grounded. One end of the capacitor C4 is electrically connected to the capacitor C3, and the other end of the capacitor C4 is grounded.

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