CN115111906B - Cloud service-based intelligent grain drying system and method - Google Patents
Cloud service-based intelligent grain drying system and method Download PDFInfo
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- CN115111906B CN115111906B CN202210680812.XA CN202210680812A CN115111906B CN 115111906 B CN115111906 B CN 115111906B CN 202210680812 A CN202210680812 A CN 202210680812A CN 115111906 B CN115111906 B CN 115111906B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/06—Grains, e.g. cereals, wheat, rice, corn
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The application relates to the field of grain drying, and particularly discloses a cloud service-based intelligent grain drying system and a cloud service-based intelligent grain drying method, wherein a PLC (programmable logic controller) is electrically connected with drying equipment, a moisture meter and a level indicator respectively; when the material in the dryer reaches a low material level, controlling a dryer discharger to operate at a preset frequency, detecting by a moisture meter, controlling a discharge auger to rotate reversely if the moisture of the discharged material of the dryer does not reach the standard, returning the discharged material to a lifting machine, and controlling the discharge auger to rotate positively if the moisture of the discharged material of the dryer reaches the standard, and pushing the discharged material to the next working section; when the material in the dryer reaches a high material level, the discharging air seal device is controlled to be closed, the high material level of the material in the dryer disappears, and after the discharged water content of the dryer reaches the standard, the preset frequency operation of the discharging air seal device is restored; the PLC controller is communicated with the cloud server through the gateway module of the Internet of things, and the cloud server is respectively communicated with the mobile client and the PC. The remote grain drying monitoring system realizes remote grain drying monitoring and intelligent material level monitoring of the dryer.
Description
Technical Field
The application relates to the field of grain drying, in particular to a cloud service-based intelligent grain drying system and method.
Background
The grain drier is a grain processing device, and the grain drier is a device which uses the hot air with quantitative temperature and quantitative air quantity to contact with a certain amount of grains with certain moisture in the drier so as to lead the grains to reach the target moisture. The device belongs to electromechanical equipment with high requirements on automatic intelligent control management degree, and is widely applied to the field of agricultural production deep processing. With the development of scientific technology, the original hysteresis of mechanical switches, ampere meters, manual plugboards and laboratory data detection can not meet the demands of market owners. The intelligent management system of the grain dryer is widely used because of high reliability, simplicity and operability. However, the current intelligent grain drying management system is generally controlled on site, cannot be controlled remotely, and cannot meet the current working requirements; and can't intelligent monitoring to the material level in the drying-machine, can't intelligent control feed rate, need artifical looking over, influence the stoving effect.
Disclosure of Invention
In order to solve the problems, the intelligent grain drying system and method based on the cloud service provided by the application realize remote monitoring and intelligent monitoring of the material level of the dryer.
In a first aspect, the present application provides a cloud service-based intelligent grain drying system, including: the drying equipment is arranged at the near end of the electric control cabinet, the moisture meter and the material level indicator, and is arranged at the far end of the cloud server, the mobile client and the PC;
the drying equipment comprises a discharging air seal device, a lifting machine, a horizontal scraper blade of a dryer, a drying fan, a hot air heater, a dryer discharger and a discharging auger; the moisture meter is arranged at the outlet of the dryer and used for detecting the discharged moisture of the dryer; the material level gauge comprises a high-level material level gauge and a low-level material level gauge which are arranged in the dryer; the electrical control cabinet comprises a PLC controller, a touch screen and an Internet of things gateway module;
the PLC is electrically connected with the drying equipment, the moisture meter and the material level meter respectively; when the material in the dryer reaches a low material level, controlling a dryer discharger to operate at a preset frequency, detecting by a moisture meter, controlling a discharge auger to rotate reversely if the moisture of the discharged material of the dryer does not reach the standard, returning the discharged material to a lifting machine, and controlling the discharge auger to rotate positively if the moisture of the discharged material of the dryer reaches the standard, and pushing the discharged material to the next working section; when the material in the dryer reaches a high material level, the discharging air seal device is controlled to be closed, the high material level of the material in the dryer disappears, and after the discharged water content of the dryer reaches the standard, the preset frequency operation of the discharging air seal device is restored;
the PLC is electrically connected with the touch screen, displays on-site real-time production data, sets parameters and issues instructions, and manually controls the drying equipment;
the PLC is communicated with a cloud server through an Internet of things gateway module, and the cloud server is respectively communicated with a mobile client and a PC; the PLC controller transmits the on-site real-time production data to the cloud server, the on-site real-time production data are displayed on the mobile client and the PC, and meanwhile, the PLC controller is remotely debugged and controlled by the mobile equipment and the PC.
Further, the drying equipment further comprises a scale feeding horizontal scraper, the system further comprises a metering scale arranged at the near end, and the metering scale is electrically connected with the PLC; the PLC receives the material flow measured by the metering scale and controls the motor rotating speed of the horizontal scraper of the feeding scale according to the material flow.
Further, the material level gauge also comprises a high-level material level gauge and a low-level material level gauge which are arranged in the buffer storage tank; when the material in the buffer storage tank reaches a low material level, the PLC controller sequentially starts a horizontal scraper blade of a dryer, a lifter and a discharging air seal device, and the dryer starts feeding; wherein the discharging air seal device runs at a preset frequency; when the material in the buffer storage tank reaches a high material level, the PLC controller stops feeding the balance horizontal scraper.
Further, the PLC is electrically connected with a steam regulating valve of the hot air heater; when the discharged water content of the dryer does not reach the standard, the PLC controller adjusts the opening of a steam regulating valve of the hot air heater.
Further, the system also comprises a thermometer arranged at the near end, wherein the thermometer is electrically connected with the PLC and used for detecting the discharging temperature of the dryer, the hot air temperature in the dryer and the material temperature in the buffer storage tank.
Further, the system also comprises a pressure sensor arranged at the proximal end, wherein the pressure sensor is electrically connected with the PLC and used for detecting the steam pressure of the hot air heater and the air pressure of the compressed air storage tank.
Further, the PLC controller monitors the status of the electric appliance, including the operation status, the fault status, the motor current and the motor frequency of the drying apparatus.
In a second aspect, the technical scheme of the application provides a cloud service-based intelligent grain drying method, which comprises the following steps:
s1, setting the material quantity in unit time of a metering scale according to the drying capacity of a dryer;
s2, starting a scale feeding horizontal scraper, pushing materials to a buffer storage tank, and adjusting the motor frequency of the scale feeding horizontal scraper according to the instantaneous flow of the metering scale and the set material quantity in unit time of the metering scale;
s3, when the materials in the buffer storage tank reach a low material level, a horizontal scraper blade, a lifter and a discharging air seal device of the dryer are sequentially started, and the dryer starts to feed; stopping feeding the balance horizontal scraper when the material in the buffer storage tank reaches a high material level;
s4, when the materials in the dryer reach a low material level, controlling a dryer discharger to operate at a preset frequency, detecting by a moisture meter, and if the discharged moisture of the dryer does not reach the standard, controlling a discharge auger to reversely rotate, returning the discharged materials to a lifting machine, and adjusting the opening of a steam regulating valve of a hot air heater; if the discharged water content of the dryer reaches the standard, controlling a discharge auger to rotate positively, and pushing the discharged water to the next working section; when the material in the dryer reaches high material level, the discharging air seal device is controlled to be closed, the high material level of the material in the dryer disappears, and after the discharged water content of the dryer reaches the standard, the preset frequency operation of the discharging air seal device is restored.
The intelligent grain drying system based on cloud service provided by the application has the following beneficial effects: (1) The collected field real-time production data is converted into 'cloud' through the gateway module of the Internet of things, the remote server cloud is connected with a PC, the remote server cloud is connected with a mobile client, the dryer system can be remotely debugged through industrial control software of the remote PC, and the equipment can rapidly and remotely process system faults through a PC industrial control software mode. The method can be implemented by a mobile device terminal: APP software, weChat, mail and PC-WEB management system, realizing remote monitoring, fault and key state reminding and cloud configuration of field devices by users, greatly improving the quality and quantity of informationized platforms of a control system, and enabling operators and managers to realize seamless management of a field dryer system in all weather. (2) Setting a material level indicator to monitor the material level in the dryer in real time, controlling the operation frequency of corresponding drying equipment, further controlling the feeding and discharging speed of the dryer, adjusting the material level in the dryer and improving the drying efficiency.
Drawings
For a clearer description of embodiments of the application or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a grain drying intelligent system architecture based on cloud services according to an embodiment of the present application.
Fig. 2 is a power distribution diagram 1 of a cloud service-based intelligent grain drying system according to an embodiment of the present application.
Fig. 3 is a power distribution diagram 2 of a cloud service-based intelligent grain drying system according to an embodiment of the present application.
Fig. 4 is a wiring diagram of a thermometer, a manometer and a moisture meter of a cloud service-based intelligent grain drying system according to an embodiment of the present application.
Fig. 5 is a schematic flow diagram of a grain drying intelligent method based on cloud service according to a second embodiment of the present application.
Detailed Description
The present application will be described in detail below by way of specific examples with reference to the accompanying drawings, the following examples being illustrative of the present application and the present application is not limited to the following embodiments.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art in a specific case.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Example 1
The embodiment of the application provides a grain drying intelligent system based on cloud service, as shown in fig. 1, which is a schematic diagram of the system architecture and comprises: drying equipment, electric control cabinet, moisture appearance and the charge level indicator of setting in the near-end, cloud server, mobile client and the PC of setting in the distal end.
From the feed end to the discharge end, drying equipment sequentially comprises a scale feeding horizontal scraper, a discharge air seal device, a lifting machine, a dryer feeding horizontal scraper, a dryer discharger and a discharge auger. The material is pushed into the buffer storage tank by the horizontal scraper of the feeding scale, the material in the buffer storage tank is pushed to the hoister by the discharge air seal device, the material is pushed to the dryer by the horizontal scraper of the feeding dryer, the material is pushed out of the dryer by the discharge device of the dryer, and the discharge is pushed to the next working section by the discharge auger or is pushed back to the hoister again. Wherein set up the weighing scale between advancing balance horizontal scraper blade and buffer tank, measure material flow, the motor rotational speed of balance horizontal scraper blade is advanced in the control of PLC controller according to material flow. A drying fan and a hot air heater are arranged at the dryer; the PLC is also electrically connected with a steam regulating valve of the hot air heater, and when the discharged water content of the dryer does not reach the standard, the PLC adjusts the opening of the steam regulating valve of the hot air heater to fully dry the materials.
The water content meter is arranged at the outlet of the dryer, the discharged water content of the dryer is detected, the discharged water content reaches the standard, the PLC controller triggers the discharge auger to rotate positively, the discharged water is pushed to the next working section for dust removal and packaging, the discharged water content does not reach the standard, the PLC controller triggers the discharge auger to rotate reversely, the discharged water is pushed back to the elevator again, and the discharged water enters the dryer again for drying.
In order to realize operation data monitoring, the system of the embodiment is provided with a thermometer at the near end, and the discharging temperature of the dryer, the hot air temperature in the dryer and the material temperature in the buffer storage tank are detected. And setting a pressure sensor to detect the steam pressure of the hot air heater and the air pressure of the compressed air storage tank, wherein the compressed air of the compressed air storage tank breaks up and mixes grains falling from the feed inlet uniformly, so that the grains can uniformly fall into the dryer.
The material level gauge of the embodiment comprises a high-level material level gauge and a low-level material level gauge which are arranged in the dryer and are used for detecting the material level in the dryer so as to control the running states of a dryer discharger and a discharge air seal device, and when the material in the dryer reaches the low material level, the preset frequency operation of the dryer discharger is controlled, and the dryer is discharged; when the material in the dryer reaches high material level, the discharging air seal device is controlled to be closed, the high material level of the material in the dryer disappears, and after the discharged water content of the dryer reaches the standard, the preset frequency operation of the discharging air seal device is restored. It should be noted that, the feeding in the dryer comes from two directions, one is the front buffer storage tank, and one is the self-circulation moisture material that does not reach the standard, through control ejection of compact air seal machine and dryer discharging ware rotational speed, makes the dryer material level keep between low and the high position of dryer, and when the high material level appears in dryer top charge level indicator, stops the buffer storage tank and supplies, namely makes ejection of compact air seal machine motor rotational speed zero, and the material is in dryer, lifting machine, the drying-in horizontal scraper blade inner loop stoving of dryer. When the high material level at the top of the dryer disappears and the detection value of the moisture meter at the outlet of the dryer reaches the standard (the discharge auger rotates positively), the discharge air-off device of the buffer storage tank resumes the preset rotating speed again, and the dryer feeds again.
The charge level indicator of the embodiment also comprises a high-level charge level indicator and a low-level charge level indicator which are arranged in the buffer storage tank; when the material in the buffer storage tank reaches a low material level, the PLC controller sequentially starts a horizontal scraper blade, a lifter and a discharging air seal device of the dryer, the dryer starts feeding, and simultaneously starts a drying fan and a hot air heater; wherein the discharging air seal device runs at a preset frequency; when the material in the buffer storage tank reaches a high material level, the PLC controller stops feeding the balance horizontal scraper.
The near-end electrical control cabinet of the embodiment comprises a PLC controller, a touch screen and an Internet of things gateway module. In the specific embodiment, in order to realize circuit connection, the electrical control cabinet further comprises an input protection module, an output protection module, a communication module, an intelligent electric meter and an exchanger. The PLC controller is electrically connected with the drying equipment and controls the drying equipment through a frequency converter or a contactor. The PLC controller is electrically connected with the thermometer, the moisture meter, the pressure sensor and the material level meter respectively through the input protection module, and is electrically connected with the steam regulating valve of the hot air heater through the output protection module. The PLC controller is electrically connected with the metering scale and the intelligent electric measuring meter through the communication module respectively. The PLC controller is electrically connected with the touch screen and the gateway module of the Internet of things through the switch respectively. The touch screen displays the on-site real-time production data, and is used for setting parameters and issuing instructions by workers, so that the drying equipment can be controlled manually, and management operation of all dryer messages and information can be completed on one touch screen.
The PLC is communicated with a cloud server through an Internet of things gateway module, and the cloud server is respectively communicated with a mobile client and a PC; the PLC controller transmits the on-site real-time production data to the cloud server, the on-site real-time production data are displayed on the mobile client and the PC, and meanwhile, the PLC controller is remotely debugged and controlled by the mobile equipment and the PC. The networking mode of cloud on the gateway module of the Internet of things comprises Ethernet, WIFI, global 4G and the like, and the on-site real-time production data collected by the PLC are converted into 'cloud' through the gateway module of the Internet of things. The remote debugging of the dryer system can be realized by the industrial control software of the remote PC, and the system can rapidly and remotely process the system faults in a PC industrial control software mode. The method can be implemented by a mobile device terminal: APP software, weChat, mail and PC-WEB management system, realizing remote monitoring, fault and key state reminding and cloud configuration of field devices by users, greatly improving the quality and quantity of informationized platforms of a control system, and enabling operators and managers to realize seamless management of a field dryer system in all weather.
To further understand the present solution, the present system circuit is described below.
As shown in fig. 2 and 3, the power supply line of the main circuit starts from the main line terminal A, B, C, N, PE and is 380V voltage of three-phase five-line system. The main incoming line is connected with an intelligent electric meter E1, and the intelligent electric meter E1 measures electricity consumption and is communicated with the PLC. The front side of the molded case circuit breaker PS-QF is provided with a red opening indicator lamp PS-HL1, and the rear side is provided with a green closing indicator lamp PS-HL2.
The power supply reaches the upper end of the molded case circuit breaker PS-QF through the wire inlet terminal, pushes up the circuit breaker PS-QF, reaches the on-site metering balance Y19 through the air switch QF9, reaches the upper ends of the air circuit breakers of the loops (Y02 QF, Y20QF, Y26QF, Y27QF, Y08QF, Y29QF and Y30 QF) through the bus bars, pushes up seven air circuit breakers, and reaches the upper ends of the contactors (Y02 UF, Y20QF, Y26QF, Y27QF, Y08QF, Y29QF and Y30 QF) through the lower ends of the air circuit breakers (Y02 QF, Y20QF, Y27KM, Y08QF and Y29 QF). After the contactor is sucked, a power supply is connected to a thermal protection relay (Y26 FR, Y27FR, Y08FR and Y30 FR) through the lower end of the contactor (Y26 KM, Y27KM, Y08KM, Y30KM1 or Y30KM 2), and then connected to a wiring terminal through the thermal protection relay (Y26 FR, Y27FR, Y08FR and Y30 FR), and the terminal supplies power to the motor; or the power supply is connected to the wiring terminals through the frequency converters (Y02 UF, Y20UF and Y29 UF) and the terminals supply power to the motor. In the figure, MY02 is a scale feeding horizontal scraper motor, MY20 is a discharge air seal motor, MY26 is a lifter motor, MY27 is a dryer feeding horizontal scraper motor, MY08 is a dryer fan motor, MY29 is a dryer discharge motor, and MY30 is a discharge auger motor.
The control loop power supply is a DC24V isolation power supply and is composed of terminals DC24V & lt2+ & gt and DC24V & lt2+ & gt, each field motor comprises a control loop, for example, a Y26 elevator motor control loop (not shown in the figure), the positive end of the DC24V power supply enters a small breaker Y26QF1, enters after exiting the small breaker, enters an auxiliary normally open contact of a main breaker Y26QF, then enters a normally open contact of a small relay KA3 connected with a digital output DQa.3 of a control system, after exiting the small relay, is connected with the upper opening of a coil of a contactor Y26KM, the lower opening of the coil of the contactor enters an auxiliary normally closed contact of a thermal overload relay Y26FR, and the output auxiliary normally closed contact is connected with the DC24V & lt2+ & gt. The electric quantity sensor Y26PI is used for connecting one end of a current signal transmitted and output with DC24V+, and connecting one end of the current signal with analog input 1AI0+ of the control system.
As shown in fig. 4, the thermometer, the manometer, the hygrometer wiring diagram includes a thermometer (hot air temperature TEY291 in the dryer, material temperature TEY89 in the buffer tank, dryer discharge temperature TEY292, softening pot discharge temperature TEY57, standby temperature TE-BY), a pressure transmitter (steam pressure PTY91 of hot air heater, air pressure PTY08 of compressed air tank) and a hygrometer STY29, wherein the thermometer signal is input into the protection module: the temperature transmitter (DGW 8120) enters the controller, is subjected to AD conversion by the controller, and then displays the numerical value on the touch screen, likewise, the pressure transmitter signal enters the control system through the input protection module DGG8130, is subjected to AD conversion by the controller, and then displays the numerical value on the touch screen, likewise, the moisture meter signal enters the input protection module DGG8130 through the connection terminal, enters the control system, is subjected to AD conversion by the controller, and then displays the numerical value on the touch screen.
The PLC can monitor the state of the electrical appliance through the circuit, including the running state, the fault state, the motor current and the motor frequency of the drying equipment. Besides, the on-site motor current, temperature, moisture value, pressure, flow and electricity consumption data can be collected, on-site data of the dryer system are recorded and fitted into a history curve, and meanwhile, the on-site motor current, temperature, moisture value, pressure, flow and electricity consumption data are analyzed, judged and early-warned, and the on-site motor current, moisture value, pressure, flow and electricity consumption data comprise: detecting the current of a field motor; detecting the temperature of hot air of a dryer; detecting the discharging temperature of the dryer; detecting a discharge moisture value of the dryer; detecting the steam pressure; detecting the pressure of the compressed air; detecting the instantaneous flow of the material; detecting the accumulated flow of the material; and detecting the electricity consumption of the equipment. And when the acquired operation data of the drying system exceeds the corresponding set threshold range, early warning is carried out.
Example two
In the second embodiment, a cloud service-based intelligent grain drying method is provided, as shown in fig. 5, which is a schematic flow diagram of the principle of the method, materials enter a buffer tank from a scale feeding horizontal scraper through a metering scale, the feeding flow is adjusted by setting the motor frequency of the scale feeding horizontal scraper, and when the buffer tank reaches a high material level, the scale feeding horizontal scraper is closed. The materials in the buffer storage tank enter the dryer through the discharging air-stop device, the lifter and the horizontal scraper of the dryer, and hot air is generated by the drying fan and the hot air heater to dry the materials. And detecting the material level of the dryer, opening a dryer discharger when the material level reaches low material level, and closing a discharging air seal device when the material level reaches high material level. Detecting whether the discharged water content of the dryer reaches the standard, if the discharged water content reaches the standard, the discharged water content is positively rotated, entering the next working section for dust removal and packaging storage, if the discharged water content does not reach the standard, the discharged water content is reversely rotated, pushing the material back to the lifting machine, simultaneously starting a drying fan, adjusting the opening of a steam regulating valve of the hot air heater, and increasing the temperature of hot air.
The flow of the method is specifically described below, and the method comprises the following steps.
SS1, the electrical control cabinet comes, the red pilot lamp lights, closes the total circuit breaker, and green pilot lamp lights, then closes switching power supply circuit breaker, and the weighing scale power supply circuit breaker, each motor main circuit breaker, control circuit breaker, each functional unit power supply circuit breaker of controller system, the touch-sensitive screen then shows starting system workflow picture.
And SS2, setting the material quantity in unit time of the metering scale according to the drying capacity of the dryer.
Setting the instantaneous flow value of a flow scale according to the design and drying yield of the dryer, and controlling the flow of the metering scale to an automatic gear; the discharging air seal device presets a frequency value according to the material level of the dryer, and controls the discharging air seal device to be in an automatic gear; the dryer discharger presets a frequency value according to the material level and the drying time of the dryer, and controls the dryer discharger to an automatic gear; setting a hot air temperature value required by hot air drying of the material, and controlling the hot air temperature to be an automatic grade; the required material moisture value is set.
And SS3, opening a horizontal scraper of the feeding scale, pushing materials to the buffer storage tank, and adjusting the motor frequency of the horizontal scraper of the feeding scale according to the instantaneous flow of the metering scale and the set material quantity in unit time of the metering scale.
SS4, when the material in the buffer storage tank reaches a low material level, a horizontal scraper blade, a lifter and a discharging air seal device of the dryer are sequentially started, and the dryer starts to feed; when the material in the buffer storage tank reaches a high material level, the feeding of the balance horizontal scraper is stopped.
SS5, when the materials in the dryer reach a low material level, controlling a dryer discharger to operate at preset frequency, detecting by a moisture meter, and if the discharged moisture of the dryer does not reach the standard, controlling a discharge auger to reversely rotate, returning the discharged materials to a lifting machine, and adjusting the opening of a steam regulating valve of a hot air heater; if the discharged water content of the dryer reaches the standard, controlling a discharge auger to rotate positively, and pushing the discharged water to the next working section; when the material in the dryer reaches high material level, the discharging air seal device is controlled to be closed, the high material level of the material in the dryer disappears, and after the discharged water content of the dryer reaches the standard, the preset frequency operation of the discharging air seal device is restored.
In the process, after the equipment is started, the corresponding equipment displays green, and the directly started equipment (discharging auger, drying fan, horizontal scraper and lifter) displays current value. The dryer discharging device can control the discharging of the dryer according to the preset frequency rotating speed, the discharging air seal device can control the flow of the outside supplied drying materials of the dryer according to the level of the dryer and the moisture value of the material discharged from the dryer according to the preset frequency rotating speed, the rotating speed of a motor of a horizontal scraping plate of a feeding scale is timely regulated to a set flow value according to the instant flow detected by a metering scale, and when the discharging (Y29) of the dryer is carried out, the discharging air seal device and the running frequency of equipment of the horizontal scraping plate of the feeding scale are greater than 0, the corresponding equipment can display a real-time running current value on a touch screen.
The control picture of the touch screen motor is clicked, the discharging device of the dryer, the discharging air seal device and the frequency setting control mode of the scale feeding horizontal scraping plate are manual gears, and the rotating speed of the motor can be adjusted by manually setting the frequency. The opening of the pneumatic adjusting valve of the hot air heater can be adjusted to a manual gear in the picture, so that the opening of the valve is manually adjusted.
All analog quantity numerical parameters (current of a motor, hot air temperature of a dryer, discharge temperature of the dryer, discharge moisture value of the dryer, steam pressure, compressed air pressure, instantaneous flow of materials, accumulated flow of materials and electricity consumption of equipment) displayed on a touch screen can be recorded in real time and fitted into a history curve, and can be provided with high and low numerical alarms, so that equipment faults are prejudged in advance, and alarms are recorded in real time for operators and managers to judge production equipment and processes.
The monitoring and operation performed on the touch screen picture can be performed at the same level by using the mobile APP and the PC-WEB management system at the remote end through the cloud server.
The foregoing disclosure is merely illustrative of the preferred embodiments of the application and the application is not limited thereto, since modifications and variations may be made by those skilled in the art without departing from the principles of the application.
Claims (6)
1. Cereal stoving intelligent system based on cloud service, characterized by, include: the drying equipment is arranged at the near end of the electric control cabinet, the moisture meter and the material level indicator, and is arranged at the far end of the cloud server, the mobile client and the PC;
the drying equipment comprises a discharging air seal device, a lifting machine, a horizontal scraper blade of a dryer, a drying fan, a hot air heater, a dryer discharger and a discharging auger; the moisture meter is arranged at the outlet of the dryer and used for detecting the discharged moisture of the dryer; the material level gauge comprises a high-level material level gauge and a low-level material level gauge which are arranged in the dryer; the electrical control cabinet comprises a PLC controller, a touch screen and an Internet of things gateway module;
the PLC is electrically connected with the drying equipment, the moisture meter and the material level meter respectively; when the material in the dryer reaches a low material level, controlling a dryer discharger to operate at a preset frequency, detecting by a moisture meter, controlling a discharge auger to rotate reversely if the moisture of the discharged material of the dryer does not reach the standard, returning the discharged material to a lifting machine, and controlling the discharge auger to rotate positively if the moisture of the discharged material of the dryer reaches the standard, and pushing the discharged material to the next working section; when the material in the dryer reaches a high material level, the discharging air seal device is controlled to be closed, the high material level of the material in the dryer disappears, and after the discharged water content of the dryer reaches the standard, the preset frequency operation of the discharging air seal device is restored;
the PLC is electrically connected with the touch screen, displays on-site real-time production data, sets parameters and issues instructions, and manually controls the drying equipment;
the PLC is communicated with a cloud server through an Internet of things gateway module, and the cloud server is respectively communicated with a mobile client and a PC; the PLC controller transmits the on-site real-time production data to the cloud server, the on-site real-time production data are displayed on the mobile client and the PC, and meanwhile, the PLC controller is remotely debugged and controlled by the mobile equipment and the PC;
the drying equipment further comprises a scale feeding horizontal scraper, the system further comprises a metering scale arranged at the near end, and the metering scale is electrically connected with the PLC; the PLC receives the material flow measured by the metering scale and controls the motor rotating speed of the horizontal scraper of the feeding scale according to the material flow;
the PLC is electrically connected with a steam regulating valve of the hot air heater; when the discharged water content of the dryer does not reach the standard, the PLC controller adjusts the opening of a steam regulating valve of the hot air heater.
2. The cloud service-based intelligent grain drying system of claim 1, wherein the level gauge further comprises a high level gauge and a low level gauge arranged in the buffer tank; when the material in the buffer storage tank reaches a low material level, the PLC controller sequentially starts a horizontal scraper blade of a dryer, a lifter and a discharging air seal device, and the dryer starts feeding; wherein the discharging air seal device runs at a preset frequency; when the material in the buffer storage tank reaches a high material level, the PLC controller stops feeding the balance horizontal scraper.
3. The cloud service-based intelligent grain drying system of claim 1, further comprising a thermometer disposed at a proximal end, the thermometer electrically connected to the PLC controller for detecting a dryer discharge temperature, a dryer hot air temperature, and a material temperature in the buffer tank.
4. The intelligent cloud service-based grain drying system of claim 3, further comprising a pressure sensor disposed at the proximal end, the pressure sensor electrically connected to the PLC controller for detecting the steam pressure of the hot air heater and the air pressure of the compressed air storage tank.
5. The intelligent cloud service-based grain drying system of claim 4, wherein the PLC controller monitors electrical appliance status including operational status of the drying appliance, fault status, motor current and motor frequency.
6. A method for the cloud service based intelligent grain drying system of any of claims 1-5, comprising the steps of:
s1, setting the material quantity in unit time of a metering scale according to the drying capacity of a dryer;
s2, starting a scale feeding horizontal scraper, pushing materials to a buffer storage tank, and adjusting the motor frequency of the scale feeding horizontal scraper according to the instantaneous flow of the metering scale and the set material quantity in unit time of the metering scale;
s3, when the materials in the buffer storage tank reach a low material level, a horizontal scraper blade, a lifter and a discharging air seal device of the dryer are sequentially started, and the dryer starts to feed; stopping feeding the balance horizontal scraper when the material in the buffer storage tank reaches a high material level;
s4, when the materials in the dryer reach a low material level, controlling a dryer discharger to operate at a preset frequency, detecting by a moisture meter, and if the discharged moisture of the dryer does not reach the standard, controlling a discharge auger to reversely rotate, returning the discharged materials to a lifting machine, and adjusting the opening of a steam regulating valve of a hot air heater; if the discharged water content of the dryer reaches the standard, controlling a discharge auger to rotate positively, and pushing the discharged water to the next working section; when the material in the dryer reaches high material level, the discharging air seal device is controlled to be closed, the high material level of the material in the dryer disappears, and after the discharged water content of the dryer reaches the standard, the preset frequency operation of the discharging air seal device is restored.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482503A (en) * | 2016-11-10 | 2017-03-08 | 安徽皖拓自动化有限公司 | grain drying machine control system and control method |
| CN107168169A (en) * | 2017-06-07 | 2017-09-15 | 合肥汇之新机械科技有限公司 | A kind of crop dryer control system |
| CN109028761A (en) * | 2018-07-03 | 2018-12-18 | 安徽辰宇机械科技有限公司 | A kind of crop dryer operation management method and its system |
| CN109751863A (en) * | 2019-03-13 | 2019-05-14 | 芜湖小禾信息科技有限公司 | Crop dryer monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20170131030A1 (en) * | 2015-11-06 | 2017-05-11 | Sukup Manufacturing Co. | Grain drying control system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482503A (en) * | 2016-11-10 | 2017-03-08 | 安徽皖拓自动化有限公司 | grain drying machine control system and control method |
| CN107168169A (en) * | 2017-06-07 | 2017-09-15 | 合肥汇之新机械科技有限公司 | A kind of crop dryer control system |
| CN109028761A (en) * | 2018-07-03 | 2018-12-18 | 安徽辰宇机械科技有限公司 | A kind of crop dryer operation management method and its system |
| CN109751863A (en) * | 2019-03-13 | 2019-05-14 | 芜湖小禾信息科技有限公司 | Crop dryer monitoring system |
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