Efficient dust-shaking electronic speed control industrial dust collection system

Abstract

The utility model relates to a high-efficiency dust-shaking electrically-controlled industrial dust collection system. Comprising a main control module, an electromagnetic valve control module, a motor output module, an LDO module used for converting input alternating current into direct current and supplying power to the whole system, a zero-crossing detection module used for detecting the zero-crossing point of an input alternating current signal, and an input detection module used for detecting the magnitude of input alternating current voltage. The electromagnetic valve control module is connected with an electromagnetic valve used for achieving the system dust shaking function, and the motor output module is connected with a motor used for achieving the dust collection function. The dust shaking function is added through the electromagnetic valve, chippings attached to the dust collector can be cleaned in time, the motor is prevented from being stuck, normal work of the motor is guaranteed, meanwhile, the bidirectional thyristors are adopted in electromagnetic valve control and motor control, the bidirectional thyristors basically have no on-resistance in the on-state, and therefore the dust shaking function is achieved. And a complicated driving circuit is not needed, so that the stability and the anti-interference capability of the system are improved, and the energy consumption of the system is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of electrical engineering and automatic control, and specifically relates to a high-efficiency dust-shaking and electrically adjustable industrial dust collection system. Background Art

[0002] For some high-intensity working environments, the debris, dust and waste generated during the production process on the factory production line, and the construction waste, wood chips, sand and gravel and other materials generated during the construction process at the construction site and decoration site usually require a vacuum cleaner with strong suction, strong durability and rich functionality. Therefore, a higher power and more durable vacuum cleaner is needed, and the circuit selection and control scheme of the control panel are different from those of ordinary vacuum cleaners.

[0003] MOSFET (Field Effect Transistor) circuits are widely used in modern electronic technology, especially in low power, high frequency and digital control. Such circuits are widely used in communication systems, power electronic equipment, and power management.

[0004] Existing vacuum cleaners are usually realized by controlling the shutdown of MOS tubes through high and low level outputs of single-chip microcomputers, which have weaknesses such as low voltage resistance, weak overcurrent capability, and poor stability.

[0005] Existing patent application: In a vacuum cleaner control system with back-EMF feedback, the voltage acquisition chip, MCU chip and MOSFET (field effect transistor) drive circuit are connected. The MCU chip detects the voltage input and switches the MOSFET (field effect transistor) to control the brushless DC motor. However, this patent application has two defects: First, the MOSFET (field effect transistor) has voltage and current limitations, large conduction losses, and high static power consumption. Second, the MOSFET (field effect transistor) circuit is highly complex and has weak anti-interference capabilities.

[0006] In addition, most of the existing vacuum cleaners are damaged because debris adheres to the vacuum cleaner, causing the motor to get stuck. If not cleaned in time, the internal parts of the motor will be damaged or severely worn, reducing the working efficiency and life of the motor. Summary of the invention

[0007] The purpose of the utility model is to solve the problems of energy consumption and system stability of the dust collection system, and to provide a high-efficiency dust-shaking electrically adjustable industrial dust collection system, which effectively solves the problems of energy consumption and system stability by adopting bidirectional thyristors and solenoid valves; the bidirectional thyristors have basically no on-resistance in the on state, so they have advantages in high-power control applications; and the thyristors do not require complex drive circuits, and the control logic is relatively simple, that is, the bidirectional thyristors have high stability and anti-interference ability in the on state; secondly, the solenoid valve adds a dust-shaking function, which can clean up debris attached to the vacuum cleaner in time to prevent the motor from getting stuck, so as to ensure the normal operation of the motor.

[0008] To achieve the above-mentioned purpose, the technical solution of the utility model is: a high-efficiency dust-shaking and electrically adjustable industrial dust suction system, including a main control module and a solenoid valve control module connected to the main control module, a motor output module, an LDO module for converting input AC into DC and powering the entire system, a zero-crossing detection module for detecting the zero-crossing point of the input AC signal, and an input detection module for detecting the magnitude of the input AC voltage. The solenoid valve control module is connected to the solenoid valve used to realize the system dust shaking function, and the motor output module is connected to the motor used to realize the dust suction function.

[0009] In one embodiment of the utility model, it also includes a speed control module connected to the main control module and used to control the motor speed, an electromagnetic valve gear adjustment module connected to the main control module and used to control the electromagnetic valve jitter frequency, and an air valve module connected to the main control module and used to determine whether ventilation is performed.

[0010] In one embodiment of the utility model, it also includes an LED module connected to the main control module and used to realize the indicator light function, a mode selection module connected to the main control module and used to realize the system working mode selection, and a serial port module connected to the main control module and used to realize the serial port communication function.

[0011] In an embodiment of the present invention, the main control module adopts an STC series single-chip microcomputer.

[0012] In one embodiment of the utility model, the LDO module includes a transformer for stepping down the input AC voltage, a rectifier bridge for rectifying the transformer-stepped AC voltage into a DC 12V voltage, and an LDO chip for stepping down the DC 12V voltage output by the rectifier bridge into a DC 5V voltage.

[0013] In one embodiment of the utility model, the solenoid valve control module includes a transistor, a photocoupler, and a bidirectional thyristor. The transistor control end is connected to the main control module, the transistor output end is connected to the photocoupler input end, and the photocoupler output end is connected to the solenoid valve through the bidirectional thyristor.

[0014] In an embodiment of the utility model, the motor module includes a photoelectric coupler and a bidirectional thyristor, the photoelectric coupler input end is connected to the main control module, and the photoelectric coupler output end is connected to the motor through the bidirectional thyristor.

[0015] In an embodiment of the present utility model, the zero-crossing detection module includes a photoelectric coupler, the input end of the photoelectric coupler is connected to the input AC through a resistor, and the output end of the photoelectric coupler is connected to the main control module.

[0016] In one embodiment of the utility model, the input detection module includes a current transformer, a rectifier bridge, a comparator, and an operational amplifier. The input end of the current transformer is connected to the input AC, the output end of the current transformer is connected to the non-inverting input end of the comparator via the rectifier bridge, the inverting input end of the comparator is connected to +5V, the output end of the comparator is connected to the non-inverting input end of the operational amplifier, and the inverting input end of the operational amplifier and the output end of the operational amplifier are connected to the main control module.

[0017] In an embodiment of the present invention, the mode selection module includes a single-pole double-throw switch, one end of the single-pole double-throw switch is grounded, and the other two ends of the single-pole double-throw switch are respectively connected to the main control module.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the utility model adds a dust shaking function through the solenoid valve, which can clean up the debris attached to the vacuum cleaner in time, effectively prevent the debris from entering the motor and causing damage, and improve the service life and stability of the equipment; secondly, the utility model realizes precise control of the motor speed through the zero-crossing detection function, and can adjust the running speed of the motor according to needs, thereby enhancing the flexibility and applicability of the equipment; at the same time, the utility model adopts bidirectional thyristors in solenoid valve control and motor control, which have better quality and reliability than MOS tubes, can provide more stable and reliable circuit control, reduce equipment failure rate, and improve equipment stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a principle block diagram of a high-efficiency dust-shaking and electrically adjustable industrial dust collection system of the utility model.

[0020] Figure 2 This is a circuit schematic diagram of a motor output module of the utility model.

[0021] Figure 3 This is a schematic diagram of the LDO module circuit of the utility model.

[0022] Figure 4 This is a circuit schematic diagram of a zero-crossing detection module of the utility model.

[0023] Figure 5 The utility model is a detailed circuit structure diagram of a high-efficiency dust-shaking and electrically adjustable industrial dust collection system. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1 As shown, the utility model provides an efficient dust-shaking and electrically adjustable industrial dust collection system, including a main control module and a solenoid valve control module connected to the main control module, a motor output module, an LDO module for converting input AC to DC and powering the entire system, a zero-crossing detection module for detecting the zero-crossing point of the input AC signal, and an input detection module for detecting the magnitude of the input AC voltage. The solenoid valve control module is connected to the solenoid valve for realizing the system dust-shaking function, and the motor output module is connected to the motor for realizing the dust collection function. It also includes a speed control module connected to the main control module and used to control the motor speed, a solenoid valve gear adjustment module connected to the main control module and used to control the solenoid valve shaking frequency, a valve module connected to the main control module and used to determine whether ventilation is present (the function of the valve module is to determine whether ventilation is present, because the dust collection system will inhale air after being powered on, and if there is wind, the chip of the main control module will be started), an LED module connected to the main control module and used to realize the indicator light function, a mode selection module connected to the main control module and used to realize the system working mode selection, and a serial port module connected to the main control module and used to realize the serial port communication function.

[0026] The following are specific implementation examples of the utility model.

[0027] The overall circuit diagram of a high-efficiency dust-shaking and electrically adjustable industrial dust collection system of the utility model is as follows Figure 1 As shown, it includes a main control module, i.e., a main control chip (STC8G1K08), an input detection module, a solenoid valve control module, an LDO module, a motor output module, a speed control module, a mode selection module, a serial port input module, an LED module, a solenoid valve gear adjustment module, a gas valve control module, and a zero-crossing detection module.

[0028] This utility model high-efficiency dust-shaking and electrically adjustable industrial dust collection system realizes comprehensive dust collector control functions. The principle is explained as follows:

[0029] The AC power is input into the system through two channels. In the first channel, the AC power passes through the LDO module, that is, the voltage is reduced through the transformer, and a stable 12V DC voltage is output through the rectifier bridge. Then the LDO chip outputs 5V DC power to power the entire system. In the second channel, the AC power passes through the input detection module, that is, the DC power is output through the current transformer and the rectifier bridge, and then it is compared with the comparator. When the input voltage is greater than the reference voltage, a high level is output; when the input voltage is less than the reference voltage, a low level is output, and then it is input into the main control module, namely STC8G1K08. STC8G1K08 also has two IO ports for selecting automatic mode and manual mode, and then a single-pole double-set switch is used to connect the ground. When one of the IO ports is grounded, the corresponding mode is selected. In the automatic mode, the microcontroller receives the high level start of the comparator, and then outputs a low level to turn on the input end of the optocoupler (i.e., photoelectric coupler) in the motor output module, and the output end is also turned on. After the circuit is turned on, the motor starts to work. If STC8G1K08 does not receive a signal from the comparator, when the automatic mode is selected, a diode connected to STC8G1K08 will be turned on to the ground, and the IO port will also turn on the optocoupler in the motor output module when it receives a low level, so that the motor works. Finally, the optocoupler connected to the solenoid valve control module is turned on to make the solenoid valve work. The motor speed and the solenoid valve jitter frequency are adjusted through the voltage division of two resistors. The microcontroller judges the difference in the size of the voltage signal received by the IO port to switch.

[0030] The motor output module and the solenoid valve control module are both controlled by optocouplers. The principle of optocouplers is that the input end is connected to control an LED light, and the output end is connected to a phototransistor. When the LED light is turned on, the phototransistor receives the light signal from the LED light and turns on. Figure 2 Take the motor output module as an example, Figure 2 The motor output module in the circuit uses STC8G1K08 to control the conduction of the LED light in the optocoupler. When a high level is provided to STC8G1K08, the LED light is turned on, the phototransistor receives the light signal, the resistance value decreases, the output end is turned on, and the motor is powered and starts to work.

[0031] Similar, such as Figure 1 As shown, the solenoid valve control module is to control an NPN transistor ( Figure 1 Q2 in the optocoupler is used to control the conduction of the LED in the optocoupler. When STC8G1K08 provides a high level to the base of the NPN transistor, the transistor is turned on, and the LED is also turned on. The phototransistor receives the light signal, the resistance value decreases, and the output end is turned on. The solenoid valve is powered and starts to work.

[0032] like Figure 3As shown in the figure, the role of the LDO module in the circuit is to provide stable DC power for the subsequent circuit. Of course, it cannot directly convert the AC voltage into DC power. First, a transformer is used to reduce the AC power to the voltage we need, and then a rectifier bridge is used to convert the AC power into DC power, and finally the LDO chip (such as L7805 in the figure) is used to reduce the voltage.

[0033] like Figure 4 As shown, for an AC motor or AC drive, zero-crossing detection can be used to determine the motor rotor position or the direction of motor movement. By detecting the zero-crossing point of the AC signal, the forward and reverse timing of the motor can be determined, thereby achieving accurate control and drive of the motor. First, the AC signal is input to the input end of the optocoupler. The LED inside the optocoupler will turn on and emit light in the positive half cycle and not turn on in the negative half cycle according to the changes in the AC signal. The photoresistor or photodiode receives the light signal emitted by the LED and converts the light signal into an electrical signal for output. Through circuit design and signal processing, the zero-crossing point detection of the AC signal can be realized, and the corresponding zero-crossing point trigger signal or control signal can be output.

[0034] The principle of speed control and solenoid valve shifting is to divide the voltage and switch different working modes by receiving different voltage signals through the single-chip microcomputer, namely STC8G1K08.

[0035] Figure 5 The utility model is a detailed circuit structure diagram of a high-efficiency dust-shaking and electrically adjustable industrial dust collection system.

[0036] The above are preferred embodiments of the present invention. Any changes made according to the technical solution of the present invention, as long as the resulting functions do not exceed the scope of the technical solution of the present invention, shall fall within the protection scope of the present invention.

Claims

1. A high-efficiency dust-shaking and electrically adjustable industrial dust collection system, characterized in that: It includes a main control module and a solenoid valve control module connected to the main control module, a motor output module, an LDO module for converting input AC into DC and powering the entire system, a zero-crossing detection module for detecting the zero-crossing point of the input AC signal, and an input detection module for detecting the magnitude of the input AC voltage. The solenoid valve control module is connected to the solenoid valve for realizing the system dust shaking function, and the motor output module is connected to the motor for realizing the dust suction function.

2. The high-efficiency dust-shaking and electrically adjustable industrial dust collection system according to claim 1 is characterized in that: It also includes a speed control module connected to the main control module and used to control the motor speed, an electromagnetic valve gear adjustment module connected to the main control module and used to control the electromagnetic valve jitter frequency, and an air valve module connected to the main control module and used to determine whether to output air.

3. The high-efficiency dust-shaking and electrically adjustable industrial dust collection system according to claim 1 is characterized in that: It also includes an LED module connected to the main control module and used to realize the indicator light function, a mode selection module connected to the main control module and used to realize the system working mode selection, and a serial port module connected to the main control module and used to realize the serial port communication function.

4. The high-efficiency dust-shaking and electrically adjustable industrial dust collection system according to claim 1 is characterized in that: The main control module adopts STC series single chip microcomputer.

5. The high-efficiency dust-shaking and electrically adjustable industrial dust collection system according to claim 1 is characterized in that: The LDO module includes a transformer for stepping down an input AC voltage, a rectifier bridge for rectifying the AC voltage stepped down by the transformer into a DC 12V voltage, and an LDO chip for stepping down the DC 12V voltage output by the rectifier bridge into a DC 5V voltage.

6. The high-efficiency dust-shaking and electrically adjustable industrial dust collection system according to claim 1 is characterized in that: The solenoid valve control module includes a transistor, a photoelectric coupler, and a bidirectional thyristor. The transistor control end is connected to the main control module, the transistor output end is connected to the photoelectric coupler input end, and the photoelectric coupler output end is connected to the solenoid valve through the bidirectional thyristor.

7. The high-efficiency dust-shaking and electrically adjustable industrial dust collection system according to claim 1 is characterized in that: The motor module comprises a photoelectric coupler and a bidirectional thyristor, the input end of the photoelectric coupler is connected to the main control module, and the output end of the photoelectric coupler is connected to the motor through the bidirectional thyristor.

8. The high-efficiency dust-shaking and electrically adjustable industrial dust collection system according to claim 1 is characterized in that: The zero-crossing detection module comprises a photoelectric coupler, an input end of the photoelectric coupler is connected to an input alternating current through a resistor, and an output end of the photoelectric coupler is connected to a main control module.

9. The high-efficiency dust-shaking and electrically adjustable industrial dust collection system according to claim 1 is characterized in that: The input detection module includes a current transformer, a rectifier bridge, a comparator, and an operational amplifier. The input end of the current transformer is connected to the input AC, the output end of the current transformer is connected to the same-phase input end of the comparator via the rectifier bridge, the inverting input end of the comparator is connected to +5V, the output end of the comparator is connected to the same-phase input end of the operational amplifier, and the inverting input end of the operational amplifier and the output end of the operational amplifier are connected to the main control module.

10. The high-efficiency dust-shaking and electrically adjustable industrial dust collection system according to claim 3 is characterized in that: The mode selection module comprises a single-pole double-throw switch, one end of the single-pole double-throw switch is grounded, and the other two ends of the single-pole double-throw switch are respectively connected to the main control module.

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