Intelligent control double-transmission double-roller flour mill

Abstract

The utility model discloses an intelligent control double-transmission double-roller flour mill, which relates to the technical field of flour milling equipment and comprises a loading device, a feeding device, a flour milling device, a console and an intelligent control device, the intelligent control device comprises a centralized control assembly, a feeding control assembly, a feeding control assembly, a pulverizing control assembly and a local touch screen, and the feeding control assembly, the feeding control assembly and the pulverizing control assembly are arranged in the feeding device, the feeding device and the pulverizing device correspondingly. The centralized control assembly and the local touch screen are arranged in the console; the centralized control assembly is in two-way connection with the feeding control assembly, the feeding control assembly, the pulverizing control assembly and the local touch screen through communication buses. The device has the characteristics of capability of automatically controlling operation, improvement of production efficiency and product quality, reduction of manual labor intensity, higher safety and the like, and is suitable for preparing stone powder, quartz powder, ceramic powder and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of flour milling equipment, in particular to an intelligently controlled double-drive double-roller flour milling machine. Background Art

[0002] In the prior art, the double-drive double-roll crushing and pulverizing machine used for preparing stone powder, quartz powder and ceramic powder includes a movable roller main machine, a fixed roller main machine, a loading device and a feeding device, etc. Its control device mainly includes a main machine control component, a hydraulic control component, a loading control component and a feeding control component, etc., all of which are in the form of separate and independent control, and most of them are switch quantity control in the form of buttons. The judgment is basically completed by manual adjustment, and most equipment parameters cannot be monitored in real time, resulting in a large workload for manual operation and high work skill requirements; at the same time, the historical data of the equipment cannot be effectively recorded and displayed, resulting in great difficulty in early debugging and later maintenance of the equipment.

[0003] At the same time, when the double-roller milling equipment is in use or the roller assembly is not replaced, the diameters of the two roller assemblies are different, which may lead to different roller surface linear velocities under the same angular velocity. As a result, after the two rollers are fed, the currents of the two motors are different, resulting in reduced energy efficiency, affecting production capacity and powder quality. In addition, existing similar equipment does not have remote operation functions, which greatly limits the flexibility of equipment debugging and use.

[0004] The Chinese patent (patent application number 202310963933.X) discloses a "high-efficiency powder making machine with controllable particle size", which includes a base 1, a pressure regulating assembly, a crushing assembly and a feeding assembly, wherein the pressure regulating assembly, the crushing assembly and the feeding assembly are arranged on the left, middle and right parts of the base 1 in sequence; the crushing assembly includes an upper pressure roller assembly and a lower pressure roller assembly, wherein the upper pressure roller assembly is arranged on the upper left of the lower pressure roller assembly. The powder material prepared by the invention has the characteristics of relatively concentrated particle size distribution, high purity and relatively high production efficiency, and is suitable for producing various material powders requiring relatively concentrated particle size distribution and relatively high purity requirements.

[0005] Another Chinese patent (patent application number 201821273476.2) discloses a "double-drive high-pressure roller mill", which includes: a fixed roller and a movable roller. The two ends of the roller shafts of the fixed roller and the movable roller are respectively installed with main bearings located in the bearing seats. The movable roller bearing seats are slidably installed on the guide rails and connected to the horizontal pressure device. The double-drive high-pressure roller mill is provided with a multi-point lubrication device, a cooling device and a detection element; the multi-point lubrication device includes a lubrication pump and a distributor, and the lubricant branch pipes connected to the distributor outlet extend to the main bearing lubrication point and the guide rail lubrication point respectively; the cooling device includes a main bearing cooling water channel and a roller shaft cooling water channel; the detection element includes roller gap detection, main motor and reducer and main bearing temperature detection, hydraulic oil circuit pressure detection, lubrication device working detection and other elements. The double-drive high-pressure roller mill of this utility model realizes multi-point automatic lubrication, effective cooling and temperature reduction, automatic detection and control, simple and compact structure, easy operation and use, and high degree of automation.

[0006] There is also a Chinese patent (patent application number 202111444907.3) that discloses a "double-roller sand making machine". The double-roller sand making machine includes a feeding mechanism and a sand making mechanism connected to the feeding mechanism. The sand making mechanism includes a sand making chamber, and relatively rotating rollers are arranged in the sand making chamber. The feeding mechanism conveys coarse sand to the sand making chamber, and the coarse sand passes through relatively rotating rollers when conveyed outward. The invention uses relatively rotating rollers for sand making. The relatively rotating rollers directly squeeze the coarse sand to obtain fine sand, with stronger sand making capacity and improved uniformity of the obtained sand particles, so that it can be used for high-hardness and medium-hardness brittle ores.

[0007] There is also a "double-roller sand making machine" disclosed in a Chinese patent (patent application number is 201911014586.6), which includes: an active roller and a passive roller connected to the machine base, the active roller and the passive roller are rotatable relative to the machine base respectively; one end of the active roller is connected to a rotating wheel, the rotating wheel is connected to the transmission wheel on the motor shaft of the motor arranged on the machine base through a belt, the other end of the active roller is connected to a driving gear, the other end of the passive roller is connected to a driven gear, the driven gear is meshed with the driving gear; the active roller is provided with a plurality of first pressing grooves at intervals, and the passive roller is provided with a plurality of first shaping grooves at intervals, and the first shaping grooves match the first pressing grooves. The invention has a simple and reasonable structure, low energy consumption in production and operation, and compared with other crushing sand making machines, the particles are round and square, less needle-like, less powder, low production and operation cost, low energy consumption, less loss, low noise, and adjustable grading coarseness, which can meet environmental protection requirements.

[0008] There is also a "high-pressure double-roller sand making machine" disclosed in a Chinese patent (patent application number is 202320212741.0), which includes a first roller, a second roller, a pressure mechanism and a buffer shock-absorbing mechanism, the pressure mechanism is connected to the upper side of the first roller and is used to apply pressure to the first roller toward the second roller, the buffer shock-absorbing mechanism includes a shock-absorbing support rod and an adjustment support plate, the shock-absorbing support rod is connected to the lower side of the pressure mechanism, the bottom end of the shock-absorbing support rod abuts against the adjustment support plate, the adjustment support plate is arranged on one side of the first roller and the pressure mechanism is supported by the shock-absorbing support rod. The high-pressure double-roller sand making machine of the utility model can avoid causing damage to the equipment or causing loud noise, eliminate the vibration and impact of the rollers, make the equipment run more smoothly, and extend the service life of the equipment. Summary of the invention

[0009] The technical problem to be solved by the utility model is to provide a double-roller milling machine which can automatically control operation, improve production efficiency and product quality, reduce manual labor intensity and has high safety.

[0010] In order to solve the above technical problems, the technical solution adopted by the utility model is to design an intelligent controlled double-drive roller mill, including a loading device, a feeding device, a milling device and a control console, the loading device includes a loading pump assembly and a blanking pump assembly, the feeding device includes a silo door assembly and a feeding belt assembly, the milling device includes a movable roller main unit, a fixed roller main unit and a hydraulic component; the loading device is arranged at the upper part of the feeding device, the milling device is arranged at the lower part of the feeding device, and the control console is arranged next to the milling device; it also includes an intelligent control device, the intelligent control device includes a centralized control component, a loading control component, a feeding control component, a milling control component and a local touch screen, the loading control component, the feeding control component and the milling control component are respectively arranged in the loading device, the feeding device and the milling device, and the centralized control component and the local touch screen are arranged in the control console; the centralized control component adopts a communication bus to be bidirectionally connected with the loading control component, the feeding control component, the milling control component and the local touch screen respectively.

[0011] The centralized control component uses PLC as the core device, and it communicates with each control component using Ethernet and serial port communication.

[0012] The intelligent control device also includes a remote controller, and the remote controller is bidirectionally connected to the centralized control component by wireless communication.

[0013] The intelligent control device also includes a cloud platform, and the cloud platform is bidirectionally connected to the centralized control device using network communication.

[0014] The powder making control component includes a hydraulic control component, a fixed roller control component and a movable roller control component. The centralized control component adopts a communication bus to bidirectionally connect with the hydraulic control component, the fixed roller control component and the movable roller control component respectively; the hydraulic control component is arranged in the hydraulic component, and includes an oil circuit pressure sensor and an oil tank temperature sensor; the fixed roller control component is arranged in the fixed roller main machine, and includes a fixed roller motor current sensor, a fixed roller motor temperature sensor and a fixed roller motor inverter; the movable roller control component is arranged in the movable roller main machine, and includes a movable roller motor current sensor, a movable roller motor temperature sensor, a movable roller motor inverter and an inclination sensor.

[0015] The feeding control component includes a feeding pump control component and a blanking pump control component; the feeding pump control component is arranged in the feeding pump component, and includes a feeding pump controller, a feeding high-position sensor and a feeding low-position sensor; the blanking pump control component is arranged in the material pump component, and includes a blanking pump controller, a blanking high-position sensor and a blanking low-position sensor.

[0016] The feed control component includes a silo door control component and a feed belt control component; the silo door control component is arranged in the silo door component, which includes an encoder, a servo drive and a feed silo limit switch; the feed belt control component is arranged in the feed belt component, which includes a belt motor controller and a belt motor inverter.

[0017] The local touch screen includes two USB interfaces, one RS232 serial port, one 100M Ethernet port, an authority operation interface, a parameter setting interface, an operation monitoring interface, an alarm information interface, and a history record interface.

[0018] The remote controller adopts a radio remote control mode, and its effective control range is 5-20 meters from the machine.

[0019] The cloud platform is developed based on Alibaba Cloud.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] First, the utility model utilizes PLC control technology to truly realize automatic adjustment of the mill, optimize crushing performance, and prevent and protect the mill from overload damage;

[0022] Second, the utility model can display the milling process parameters of the equipment and the equipment status performance parameters in real time, and can automatically adjust the equipment according to the relevant parameters, while providing a reference for the operator and providing data support for the operator to further optimize the setting parameters;

[0023] Third, the utility model has the functions of fault diagnosis and alarm prompts. When the equipment is abnormal, it can accurately give fault diagnosis suggestions so that the operator can conduct timely and effective troubleshooting of the equipment;

[0024] Fourth, the utility model has the function of saving equipment historical data, which can save equipment operation information, equipment status data, equipment alarm information, etc., providing a basis for equipment maintenance and debugging;

[0025] Fifth, the utility model realizes the automation of the relevant milling process, and can automatically complete the start-up, milling, shutdown, feeding and roller surface line speed matching, realizing one-button start-up production;

[0026] Sixth, the utility model has a rich system interaction interface, which can be connected to the customer's relevant local system (such as the customer's own data acquisition and monitoring control system and cloud platform server);

[0027] Seventh, the utility model can monitor the relevant operating status data of the flour making machine in real time, and through the control program, control the equipment mechanism in real time according to the feedback data to ensure that the relevant operating parameters are within the set range, thereby ensuring production safety and quality.

[0028] In short, the utility model can intelligently and automatically adjust the powder making process, protect the powder making machine from abnormal overload during the production process, greatly reduce the labor intensity of manual operation and the operating skill requirements, improve the equipment efficiency while also improving the operator's work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural block diagram of the utility model.

[0030] In the figure: 1 is the local touch screen, 2 is the cloud platform, 3 is the centralized control component, 4 is the intelligent control device, 5 is the remote control, 6 is the moving roller motor current sensor, 7 is the moving roller motor temperature sensor, 8 is the moving roller motor inverter, 9 is the inclination sensor, 10 is the moving roller control component, 11 is the moving roller host, 12 is the powder making control component, 13 is the fixed roller motor current sensor, 14 is the fixed roller motor temperature sensor, 15 is the fixed roller motor inverter, 16 is the oil circuit pressure sensor, 17 is the powder making device, 18 is the oil tank temperature sensor, 19 is the hydraulic control component, 20 is the hydraulic component, 21 is the fixed roller control component, 22 is the fixed roller host, 23 is the blanking pump component , 24 is a feeding device, 25 is a feeding pump control component, 26 is a feeding pump controller, 27 is a feeding high position sensor, 28 is a feeding control component, 29 is a feeding low position sensor, 30 is a feeding pump component, 31 is a feeding pump control component, 32 is a feeding pump controller, 33 is a feeding high position sensor, 34 is a feeding low position sensor, 35 is a feeding device, 36 is a feeding belt component, 37 is a feeding belt control component, 38 is a feeding control component, 39 is a silo door component, 40 is a silo door control component, 41 is a belt motor controller, 42 is an encoder, 43 is a servo driver, 44 is a feed silo limit switch, and 45 is a belt motor inverter. DETAILED DESCRIPTION

[0031] The following is a further description of the present invention in conjunction with the accompanying drawings and embodiments. The following description is in the form of examples, but the protection scope of the present invention should not be limited thereto.

[0032] The intelligent controlled double-drive double-roller mill of the present embodiment is composed of a loading device 24, a feeding device 35, a milling device 17, a control console (not shown in the attached drawings) and an intelligent control device 4. The loading device 24 is arranged on the upper part of the feeding device 35, the milling device 17 is arranged on the lower part of the feeding device 35, and the control console is arranged next to the milling device 17.

[0033] The powder making device 17 is composed of a frame (not shown in the attached drawings), a casing (not shown in the attached drawings), a movable roller main unit 11, a fixed roller main unit 22 and a hydraulic component 20. The casing is installed on the frame, and the movable roller main unit 11 and the fixed roller main unit 22 are installed inside the casing; the hydraulic component 20 is composed of a hydraulic station (including a hydraulic oil tank and a hydraulic oil pump) and a hydraulic cylinder (neither of which are shown in the attached drawings). The hydraulic station is installed on the side of the frame, and the hydraulic cylinder is installed on the frame, and is used to push the movable roller main unit 11 to swing, thereby forming pressure between the movable roller (not shown in the attached drawings) of the movable roller main unit 11 and the fixed roller (not shown in the attached drawings) of the fixed roller main unit 22.

[0034] The fixed roller main machine 22 is composed of a fixed roller, a fixed roller bearing seat and a fixed roller motor (not shown in the attached drawings). The two fixed roller bearing seats are respectively installed on the front and rear sides of the frame (outside the casing), and the two ends of the fixed roller (i.e., the fixed roller shaft ends) are installed in the fixed roller bearing seats, and one end thereof extends out of the fixed roller bearing seat and is connected to the fixed roller motor (with deceleration and speed regulation functions).

[0035] The movable roller main machine 11 is composed of a movable roller, a movable roller bearing seat, a swing rod, a swing rod shaft, a swing rod bearing seat and a movable roller motor (not shown in the attached drawings). The two swing rod bearing seats are respectively installed on the front and rear sides (outside the casing) of the frame (the left part of the fixed roller bearing seat), the lower ends of the two swing rods are passed through the swing rod shafts, and the two ends of the swing rod shafts pass through the lower ends of the swing rods and are then passed through the two swing rod bearing seats; the two movable roller bearing seats are installed on the outer side of the upper right part of the swing rod, the two ends of the movable roller (i.e.: the movable roller shaft end) are passed through the movable roller bearing seat, and one end thereof extends out of the movable roller bearing seat and is connected to the movable roller motor (with deceleration and speed regulation functions).

[0036] The hydraulic cylinder (which is connected to the hydraulic oil pump and the hydraulic oil tank through oil pipes respectively) is placed in the middle of the left part of the frame, and the upper end of the cylinder shaft (not drawn in the attached figure) extending upward is hinged to the upper left part of the swing rod (the upper left parts of the two swing rods are connected by a connecting rod); the position of the movable roller is higher than that of the fixed roller, forming a state in which the movable roller is pressed from the upper left to the lower right fixed roller; when the cylinder shaft of the hydraulic cylinder extends upward, it pushes the swing rod to swing in the clockwise direction, and then drives the movable roller to swing to the lower right, thereby forming pressure between the movable roller of the movable roller main machine and the fixed roller of the fixed roller main machine.

[0037] The feeding device 24 is composed of an intermediate bin (not shown in the drawings), a feeding pump assembly 30 and a blanking pump assembly 23; the feeding pump assembly 30 includes a feeding pump (not shown in the drawings), which is placed on the upper part of the intermediate bin on one side of the frame; the blanking pump assembly 23 includes a blanking pump (not shown in the drawings), which is placed in the middle and lower part of the intermediate bin and the upper part of the feed bin.

[0038] The feeding device 35 is composed of a feeding bin (not shown in the drawings), a bin door assembly 39 and a feeding belt assembly 36. The bin door assembly 39 is composed of a bin door (not shown in the drawings), a bin door servo motor (not shown in the drawings) and a feeding bin limit switch 44. The feeding belt assembly 36 includes a feeding belt conveyor (not shown in the drawings). The feeding bin is arranged at the lower part of the intermediate bin, and the bin door assembly 39 and the feeding belt conveyor are arranged at the lower part in sequence. The terminal of the feeding belt conveyor is located above the feeding port of the powder making device 17.

[0039] The intelligent control device 4 is composed of a centralized control component 3, a loading control component 28, a feeding control component 38, a milling control component 12, a local touch screen 1, a remote control 5 and a cloud platform 2. The centralized control component 3 uses a communication bus to connect with the loading control component 28, the feeding control component 38, the milling control component 12, the local touch screen 1, the remote control 5 and the cloud platform 2 in a bidirectional manner, and realizes human-computer dialogue and specific operations of the intelligent control device 4 through the local touch screen 1.

[0040] The centralized control component 3 is arranged in the control console, which adopts PLC as the core device, and exchanges data with each control component through Ethernet communication and serial communication. The PLC is written with programs including but not limited to startup interlock control program, milling control program, shutdown interlock control program, roller surface line speed automatic matching control program, milling mode switching program, etc., and can save the set production process values ​​for easy calling.

[0041] The local touch screen 1 is a human-machine interface (i.e., local operation panel), which is arranged on the console and is respectively provided with two USB interfaces, one RS232 serial port, and one 100M Ethernet port. It is also provided with an authority operation interface, a parameter setting interface, an operation monitoring interface, an alarm information interface, and a history record interface for human-machine interaction operation beside the equipment.

[0042] in:

[0043] Permission operation interface: complete user login and operate according to user level or corresponding permissions.

[0044] Parameter setting interface: set the process parameters, alarm threshold parameters and control mode of the milling equipment during operation.

[0045] Operation monitoring interface: provides start and stop operation buttons to control the start and stop process of the equipment. Displays the current milling mode, the current of the moving roller motor, the current of the fixed roller motor, the inclination position of the moving roller, and the hydraulic oil pressure. In addition to the above buttons and displays, it also provides related interface switching function buttons.

[0046] Alarm information interface: This interface can browse historical fault alarm information.

[0047] History record interface: This interface can query the relevant equipment operating parameters within a period of time, so that the operator can adjust the equipment parameters in time and optimize the equipment working status.

[0048] In the future, as the intelligent control device is upgraded, more interfaces will be added.

[0049] The remote controller 5 is bidirectionally connected to the centralized control component 3 by wireless communication (i.e., radio remote control mode), and is used to wirelessly operate the machine next to the machine (i.e., next to the intelligent control double-drive roller mill of this embodiment, the same below). Its effective control range is 5-20 meters next to the machine, and its optimized effective control range is 10 meters next to the machine (a data acquisition box is set here to determine the distance). The determination of the effective control range is to ensure the safety of equipment operation. The operating range of the wireless remote controller of the equipment must be limited to avoid the operator intentionally or unintentionally using the remote controller 5 to operate the equipment when the operator is far away from the equipment and cannot confirm the production status of the production line.

[0050] The cloud platform 2 is developed based on Alibaba Cloud, and adopts network communication and a bidirectional connection with the centralized control component 3, providing ultra-long-distance monitoring based on the Internet on mobile phones and computers, and is used to monitor the equipment (i.e., the intelligent control dual-drive roller mill of this embodiment, the same below) within the Internet range, and realize remote monitoring of equipment status and data; wherein, monitoring equipment parameters is a basic authority, and controlling equipment is an administrator authority, and only authorized personnel can perform relevant remote operations to ensure equipment safety.

[0051] The milling control assembly 12 is composed of a hydraulic control component 19, a fixed roller control component 21 and a movable roller control component 10 which are bidirectionally connected to the intelligent control device 4 via a communication bus.

[0052] The hydraulic control component 19 is composed of an oil circuit pressure sensor 16 and an oil tank temperature sensor 18. The oil tank temperature sensor 18 is arranged in the hydraulic oil tank of the hydraulic station to monitor the oil temperature in the hydraulic oil tank and determine whether heating or cooling is required; the oil circuit pressure sensor 16 is arranged in the oil circuit between the hydraulic oil pump and the hydraulic cylinder to monitor the pressure in the oil circuit and feedback the size of the powder making pressure.

[0053] The power unit of the fixed roller main machine 22 is composed of a variable frequency asynchronous motor (i.e., the fixed roller motor, not shown in the attached drawings) and an AC variable frequency speed regulator (i.e., the fixed roller motor frequency converter 15). The power unit of the movable roller main machine 11 is also composed of a variable frequency asynchronous motor (i.e., the movable roller motor, not shown in the attached drawings) and an AC variable frequency speed regulator (i.e., the movable roller motor frequency converter 9). The power of the fixed roller motor and the movable roller motor is the same, and their speeds can be adjusted by adjusting the frequencies of the fixed roller motor frequency converter 15 and the movable roller motor frequency converter 9, respectively.

[0054] The fixed roller control component 21 is composed of a fixed roller motor current sensor 13, a fixed roller motor temperature sensor 14 and a fixed roller motor frequency converter 15. The fixed roller motor current sensor 13 is connected to the input power line of the fixed roller motor through a self-inductance coil, and is used to detect the real-time current of the fixed roller motor; the fixed roller motor temperature sensor 14 is arranged on the bearing end cover of the fixed roller motor, and is used to detect the relevant temperature of the fixed roller motor and monitor the real-time status of the fixed roller motor; the fixed roller motor frequency converter 15 is arranged in the input power line of the fixed roller motor, and is used to control the start and stop of the fixed roller motor, and to adjust the speed of the fixed roller motor by adjusting the frequency of the AC power supply.

[0055] The moving roller control component 10 is composed of a moving roller motor current sensor 6, a moving roller motor temperature sensor 7, a moving roller motor inverter 9 and an inclination sensor 8. The moving roller motor current sensor 6 is connected to the input power line of the moving roller motor through a self-inductance coil, and is used to detect the real-time current of the moving roller motor; the moving roller motor temperature sensor 7 is arranged on the bearing end cover of the moving roller motor, and is used to detect the relevant temperature of the moving roller motor and monitor the real-time status of the moving roller motor; the moving roller motor inverter 9 is arranged in the input power line of the moving roller motor, and is used to control the start and stop of the moving roller motor, and to adjust the speed of the moving roller motor by adjusting the frequency of the AC power supply; the inclination sensor 8 is arranged on the swing arm of the moving roller main unit 11, and rotates around the swing arm axis with the swing arm, and is used to detect the rotation angle of the swing arm, and judge the position of the moving roller according to the angle value.

[0056] The loading control assembly 28 is composed of a loading pump control component 31 and a blanking pump control component 25 .

[0057] The feeding pump control component 31 is composed of a feeding pump controller 32, a feeding high-level sensor 33 and a feeding low-level sensor 34. The feeding pump controller 32 is arranged in the input power circuit of the feeding pump, and is used to control the feeding pump to start and stop. When it is turned on, the feeding occurs, and when it is turned off, the feeding stops. The feeding high-level sensor 33 and the feeding low-level sensor 34 are respectively arranged in the upper and lower parts of the intermediate bin, and are respectively used to detect whether the feeding of the intermediate bin is completed and whether the material in the intermediate bin is used up.

[0058] The blanking pump control component 25 is composed of a blanking pump controller 26, a blanking high-level sensor 27 and a blanking low-level sensor 29. The blanking pump controller 26 is arranged in the input power circuit of the blanking pump, and is used to control the blanking pump to start and stop. When it is turned on, the material is fed into the equipment, and when it is closed, the feeding is stopped; the blanking high-level sensor 27 and the blanking low-level sensor 29 are respectively arranged in the upper and lower parts of the feed bin, and are respectively used to detect whether the feeding of the feed bin is completed and whether the material in the feed bin is used up.

[0059] The feed control assembly 38 is composed of a silo door control component 40 and a feed belt control component 37 .

[0060] The silo door control component 40 is composed of an encoder 42, a servo driver 43 and a feed silo limit switch 44. The silo door is arranged at the lower end of the feed silo, and the silo door is opened and closed by a silo door servo motor; the encoder 42 is arranged on the main shaft inside the motor, and is used to feedback the opening degree of the silo door. The greater the rotation angle of the silo door servo motor, the more pulses there are, and the corresponding opening degree of the silo door is greater; the servo driver 43 is installed in the PLC console, and is used to control the start and stop of the silo door servo motor; the feed silo limit switch 44 is arranged at the end of the silo door rack, and is used to feedback whether the silo door is completely closed. When the silo door is completely closed, the relevant sensing structure triggers the induction.

[0061] The feed belt control component 37 is composed of a belt motor controller 41 and a belt motor inverter 45 of the feed belt conveyor. The belt motor controller 41 and the belt motor inverter 45 are both arranged in the input power circuit of the belt motor, and are respectively used for starting and stopping the belt motor and adjusting the speed of the belt motor by adjusting the frequency of the belt motor inverter 45.

[0062] The intelligent controlled dual-drive double-roller mill of the present embodiment has the following startup process: after the start button is pressed, the movable roller motor and the fixed roller motor are started, and after the feedback signal lights of the movable roller motor and the fixed roller motor are on, the hydraulic oil pump of the hydraulic station in the hydraulic system is started, and the hydraulic cylinder drives the movable roller main machine 11 to swing, providing pre-pressure between the movable roller of the movable roller main machine 11 and the fixed roller of the fixed roller main machine 22. When the pre-pressure reaches the set value, the servo driver 43 drives the silo door to open. At the same time, the belt motor controller 41 starts the belt motor to drive the feed belt conveyor to transport. After a delay of 5 seconds, the pressure between the movable roller of the movable roller main machine 11 and the fixed roller of the fixed roller main machine 22 increases to the milling pressure value (different raw materials require different milling pressure values), and then normal milling begins.

[0063] The intelligent controlled double-drive roller mill of the present embodiment has the following stopping process: after the stop button is pressed, the hydraulic oil pump of the hydraulic station stops working, the hydraulic system starts pre-depressurization, the hydraulic cylinder drives the movable roller main machine 11 to swing back, and the pressure between the movable roller of the movable roller main machine 11 and the fixed roller of the fixed roller main machine 22 is reduced. When the inclination value detected by the inclination sensor 8 arranged on the swing rod of the movable roller main machine 11 is less than the set value, the feeding pump and the blanking pump stop working. After a delay of 5 seconds, the servo driver 43 drives the servo motor to close the silo door. After a delay of 10 seconds, the belt motor controller 41 cuts off the power supply of the belt motor to stop the feeding belt conveyor. After a delay of 5 seconds, the movable roller motor and the fixed roller motor stop working.

[0064] The intelligent control double-drive roller mill of this embodiment has a roller surface linear velocity (i.e., roller surface linear velocity of the moving roller or fixed roller) matching control process as follows: when the intelligent control double-drive roller mill of this embodiment starts to make flour, the centralized control component 3 (i.e., PLC) will monitor the current of the moving roller motor and the fixed roller motor in real time. When the absolute value of the difference between the two currents is greater than or equal to the set value ΔC for more than 3 seconds, the centralized control component 3 determines that the linear velocity does not match and starts linear velocity matching control. If the current C1 of the moving roller motor is greater than the current C2 of the fixed roller motor, the frequency value of the fixed roller motor will be increased by 0.1. After the adjustment is completed, the absolute value of the difference between the two roller currents is calculated. If it is less than the set value ΔC, the matching is completed and the matching control process is exited. Otherwise, the frequency continues to increase until the currents of the two rollers match. If the difference between the currents of the two rollers still cannot be reduced to the set value ΔC when the frequency of the moving roller motor is increased to 50Hz, if C1 is greater than C2 at this time, an alarm prompts that the linear velocity matching cannot be completed.

[0065] At this time, if C2 is greater than C1, the fixed roller motor frequency is reduced by 0.1 until the absolute value difference between the two currents is less than the set value ΔC. If the current difference between the two roller motors cannot be controlled within ΔC when the fixed roller motor frequency is reduced to 40Hz, an alarm will be issued to indicate that the line speed matching cannot be completed.

[0066] The control process of the feeding control component 28 of the intelligent control double-drive roller mill of this embodiment is as follows: when the intelligent control double-drive roller mill of this embodiment is in the milling state, the feeding control component 28 controls the real-time action. When the sensing signal of the low-level feeding sensor 34 disappears, the feeding pump is turned on for feeding. When the sensing signal of the high-level feeding sensor 33 lights up for more than 3 seconds during the feeding process, the feeding pump is stopped for feeding. When the sensing signal of the low-level feeding sensor 29 disappears, the feeding pump is turned on, otherwise wait until the feeding machine stops, and then turn on the feeding pump; when the sensing signal of the high-level feeding sensor 27 lights up for more than 3 seconds during the feeding process, the feeding pump is stopped for feeding.

[0067] The control process of the feed control component 38 of the intelligent control double-drive roller mill of this embodiment is as follows: when the start button is pressed, on the one hand, the centralized control component 3 will detect whether the silo door of the feed silo is at the origin. If it is not at the origin, the silo door will be closed until the silo origin sensing signal (i.e., sensing by the feed silo limit switch 44) lights up. Subsequently, the silo door is opened to the set value under the drive of the servo motor. On the other hand, the belt motor is started, and the feed belt conveyor is started after a delay of 5s.

[0068] The working process of the intelligent controlled dual-drive double-roller mill of this embodiment is as follows: after pressing the start button, the movable roller motor and the fixed roller motor start, and after the feedback signal lights of the movable roller motor and the fixed roller motor light up, the hydraulic oil pump of the hydraulic station in the hydraulic system starts, and the hydraulic cylinder drives the movable roller main machine 11 to swing, providing pre-pressure between the movable roller of the movable roller main machine 11 and the fixed roller of the fixed roller main machine 22. When the pre-pressure reaches the set value, the servo driver 43 drives the silo door to open. At the same time, the belt motor controller 41 starts the belt motor to drive the feed belt conveyor to transport. After a delay of 5 seconds, the pressure between the movable roller main machine 11 and the fixed roller main machine 22 increases to the powder making pressure value, and then normal powder making begins.

[0069] The utility model discloses an intelligently controlled double-drive double-roller powder making machine, which is suitable for preparing stone powder, quartz powder, ceramic powder and the like.

Claims

1. An intelligent controlled double-drive roller mill, comprising a loading device, a feeding device, a milling device and a control console, wherein the loading device comprises a loading pump assembly and a feeding pump assembly, the feeding device comprises a silo door assembly and a feeding belt assembly, and the milling device comprises a moving roller main machine, a fixed roller main machine and a hydraulic component; the loading device is arranged on the upper part of the feeding device, the milling device is arranged on the lower part of the feeding device, and the control console is arranged beside the milling device; characterized in that: It also includes an intelligent control device, which includes a centralized control component, a loading control component, a feeding control component, a powder making control component and a local touch screen. The loading control component, the feeding control component and the powder making control component are respectively arranged in the loading device, the feeding device and the powder making device, and the centralized control component and the local touch screen are arranged in the control console; the centralized control component adopts a communication bus to be bidirectionally connected with the loading control component, the feeding control component, the powder making control component and the local touch screen.

2. The intelligent control double-drive roller mill according to claim 1, characterized in that: The centralized control component uses PLC as the core device, and it communicates with each control component using Ethernet and serial port communication.

3. The intelligent control double-drive roller mill according to claim 1, characterized in that: The intelligent control device also includes a remote controller, and the remote controller is bidirectionally connected to the centralized control component by wireless communication.

4. The intelligent control double-drive roller mill according to claim 1, characterized in that: The intelligent control device also includes a cloud platform, and the cloud platform is bidirectionally connected to the centralized control device using network communication.

5. The intelligent controlled double-drive roller mill according to any one of claims 1 to 4, characterized in that: The powder making control component includes a hydraulic control component, a fixed roller control component and a movable roller control component. The centralized control component adopts a communication bus to bidirectionally connect with the hydraulic control component, the fixed roller control component and the movable roller control component respectively; the hydraulic control component is arranged in the hydraulic component, and includes an oil circuit pressure sensor and an oil tank temperature sensor; the fixed roller control component is arranged in the fixed roller main machine, and includes a fixed roller motor current sensor, a fixed roller motor temperature sensor and a fixed roller motor inverter; the movable roller control component is arranged in the movable roller main machine, and includes a movable roller motor current sensor, a movable roller motor temperature sensor, a movable roller motor inverter and an inclination sensor.

6. The intelligent controlled double-drive roller mill according to any one of claims 1 to 4, characterized in that: The feeding control component includes a feeding pump control component and a blanking pump control component; the feeding pump control component is arranged in the feeding pump component, and includes a feeding pump controller, a feeding high-position sensor and a feeding low-position sensor; the blanking pump control component is arranged in the material pump component, and includes a blanking pump controller, a blanking high-position sensor and a blanking low-position sensor.

7. The intelligent controlled double-drive roller mill according to any one of claims 1 to 4, characterized in that: The feed control component includes a silo door control component and a feed belt control component; the silo door control component is arranged in the silo door component, which includes an encoder, a servo drive and a feed silo limit switch; the feed belt control component is arranged in the feed belt component, which includes a belt motor controller and a belt motor inverter.

8. The intelligent control double-drive roller mill according to claim 1, characterized in that: The local touch screen includes two USB interfaces, one RS232 serial port, one 100M Ethernet port, an authority operation interface, a parameter setting interface, an operation monitoring interface, an alarm information interface, and a history record interface.

9. The intelligent control double-drive roller mill according to claim 3, characterized in that: The remote controller adopts a radio remote control mode, and its effective control range is 5-20 meters from the machine.

10. The intelligent control double-drive roller mill according to claim 4, characterized in that: The cloud platform is developed based on Alibaba Cloud.

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