CN103121011B - Control system and method for dry method sorting device - Google Patents
Control system and method for dry method sorting device Download PDFInfo
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- CN103121011B CN103121011B CN201310047002.1A CN201310047002A CN103121011B CN 103121011 B CN103121011 B CN 103121011B CN 201310047002 A CN201310047002 A CN 201310047002A CN 103121011 B CN103121011 B CN 103121011B
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- discharging
- coal dust
- medium sensor
- gangue
- sorting
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Abstract
Disclosed are a control system and a method for a dry method sorting device. The control system comprises a material feeding medium sensor, a material discharging coal dust medium sensor, a material discharging coal gangue medium sensor, a control main machine, a vortex motor frequency changing and speed setting controller, an air door adjusting driving machine and a spiral material conveying controller. When materials are sorted, signals are collected in real time through the material feeding medium sensor, and the detected signals are sent to the control main machine, so that quantity containing gangue components in the coal sorting materials is confirmed, and the speed of the vortex motor frequency changing and speed setting controller is controlled so as to carry out rough sorting. The materials after rough sorting enter an air sorting device, detection information is obtained through the material discharging coal gangue medium sensor, an air door valve and a spiral material conveying device are automatically controlled, so that fine sorting is achieved. The defect of poor mechanical adaptability of a traditional coal sorting machine is overcome, the turbine revolving speed can be adjusted automatically according to coal quality of different fed materials, and the air door of spiral material conveying and air sorting can be automatically adjusted according to the detection of coal dust and gangue dust at a material outlet at the same time, so that the best coal sorting effect can be achieved.
Description
Technical field
The present invention relates to a kind of dry separation device control system and method, be particularly useful for the control of coal selector in coal industry production.
Background technology
Coal separation is requisite link of improving the quality of products during coal industry is produced, and is utilize resources synthetically, the effective way of economize energy and environmental protection, the important component part of clean coal technology in Ye Shi China century strategy of sustainable development.At present, energy development strategy changes from energy development type to economy of energy efficiency type, and energy development and saving are laid equal stress on, and saving is put prior, and exploitation will say economic benefit and social benefit, and its core improves energy utilization rate.Coal separation is the most economical and the most effective approach of By Reasonable Utilizing Its Coal Resources, protection of the environment, is Coal dressing and requisite basis and the key link being converted into Filter Tuber For Clean Coal.Current coal preparation technology, mainly mechanization controls, and intelligence degree is lower, have impact on coal separation efficiency.Therefore, by the application of information Perception and control technology, improve the automaticity of coal preparation technique, to comprehensive utilization, the economize energy of coal resources, alleviate environmental pollution tool and be of great significance.
Summary of the invention
The object of the invention is to overcome the weak point in prior art, provide that a kind of system is simple, easy and simple to handle, the control system of the dry coal preparation device that can improve coal separation efficiency and method.
For achieving the above object, the control system of dry separation device of the present invention, comprise main control system, the input of main control system is respectively equipped with the discharging gangue medium sensor of the charging medium sensor being located at turbine sorting unit charging aperture place, the discharging coal dust medium sensor being located at pneumatic separation device coal dust discharging opening and gangue discharging opening, and the output of main control system is respectively equipped with eddy current motor variable-frequency speed-regulating controller, air door adjusting driver and spiral conveying controller; The output of described eddy current motor variable-frequency speed-regulating controller is connected on the turbo-dynamo of turbine sorting unit; The output of described spiral conveying controller is connected on screw conveying device; The output of described air door adjusting driver is connected on air door valve; The control of first order sorting is made up of charging medium sensor, main control system and eddy current motor variable-frequency speed-regulating controller; The control of second level sorting is made up of discharging coal dust medium sensor, discharging gangue medium sensor, main control system, air door adjusting driver and spiral conveying controller.
Described charging medium sensor, discharging coal dust medium sensor and discharging gangue medium sensor are and become medium capacitance sensor; Described change dielectric capacitance sensor comprises the signal generating circuit, operational amplifier, the peak detection circuit that connect successively, is provided with standard capacitance C between signal generating circuit, operational amplifier
0, standard capacitance C
0be provided with between peak detection circuit with operational amplifier phase and connect capacitance sensor C
x.
Utilize the control method of the dry separation device of said system:
A, first setting become dielectric capacitance sensor and detect the output voltage of pure coal dust and pure spoil powder as two calibration values;
B, when material enters turbine sorting unit from charging aperture, be located at the charging medium sensor Real-time Collection signal of porch, by detection signal be sent to main control system, judge the amount containing spoil composition in the material of coal separation, the speed of controlled vortex flow motor variable-frequency speed-regulating controller carries out first order sorting;
C, enter pneumatic separation device through screw conveying device when the material of first order sorting, by the Detection Information that the discharging coal dust medium sensor of coal dust discharging opening and the discharging gangue medium sensor of gangue discharging opening obtain, automatic control storm door valve and screw conveying device, carry out the control of air quantity and conveying amount, make the coal dust of coal dust discharging opening not containing spoil, the spoil of gangue discharging opening, not containing coal dust, achieves second level sorting;
When the discharging of coal dust discharging opening is less than by coal dust medium sensor detection signal the calibration value detected pure coal dust, then judge in coal dust discharging opening containing colliery powder, now reduce to enter the doses of second level sorting by controlling screw conveying device, and adjust by controlling air door valve reduction air quantity, finally make the coal dust of coal dust discharging opening not containing spoil;
When the discharging of gangue discharging opening is greater than the calibration value to pure spoil powder detection by gangue medium sensor detection signal, then judge in gangue discharging opening containing coal dust, now increase by controlling screw conveying device the material entering second level sorting, and adjust by controlling air door valve increase air quantity, finally make in the colliery powder of gangue discharging opening not containing coal dust.
Beneficial effect, owing to have employed technique scheme, the Automated condtrol that can realize dry separation device of the present invention, not only can improve the coal separation efficiency of dry separation device, the selecting coal quality of dry separation device can also be improved, increase the productivity ratio of cleaned coal, reduce the waste of resource.Overcome the shortcoming that traditional coal preparation machineization adapts to difference, automatically secondary speed can be adjusted according to the ature of coal of different feeds, simultaneously can according to the detection of the coal dust of discharging opening and spoil powder, the air door of adjustment spiral conveying and selection by winnowing automatically, makes to reach best coal separation effect.Its structure is simple, uses easy to operate, effective, has practicality.
Accompanying drawing explanation
Fig. 1 is control system block diagram of the present invention;
Fig. 2 is coal separation control system block diagram of the invention process;
Fig. 3 is change medium capacitance sensor schematic diagram of the invention process.
In figure: 1. charging medium sensor; 2. discharging coal dust medium sensor; 3. discharging gangue medium sensor; 4. main control system; 5. turbo-dynamo variable-frequency speed-regulating controller; 6. air door adjusting driver; 7. spiral conveying controller; 8. turbo-dynamo; 9. turbine; 10. screw conveying device; 11. air door valves; 12. discharging sampling containers; 13. turbine sorting units; 14. pneumatic separation devices; 15. signal generating circuits; 16. operational amplifiers; 17. peak detection circuits.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
As shown in Figure 1.Dry separation device control system of the present invention is formed primarily of charging medium sensor 1, discharging coal dust medium sensor 2, discharging gangue medium sensor 3, main control system 4, turbo-dynamo variable-frequency speed-regulating controller 5, air door adjusting driver 6 and spiral conveying controller 7.
The input of described main control system 4 be respectively equipped be located at turbine sorting unit 13 charging aperture place charging medium sensor 1, be located at the discharging coal dust medium sensor 2 at pneumatic separation device 14 coal dust discharging port A place and the discharging gangue medium sensor 3 at gangue discharging opening B place, the output of main control system 4 is respectively equipped with eddy current motor variable-frequency speed-regulating controller 5, air door adjusting driver 6 and spiral conveying controller 7; The output of described eddy current motor variable-frequency speed-regulating controller 5 is connected on the turbo-dynamo 8 of turbine sorting unit 13; The output of described spiral conveying controller 7 is connected on screw conveying device 10; The output of described air door adjusting driver 6 is connected on air door valve 11; The control of first order sorting is made up of charging medium sensor 1, main control system 4 and eddy current motor variable-frequency speed-regulating controller 5; The control of second level sorting is made up of discharging coal dust medium sensor 2, discharging gangue medium sensor 3, main control system 4, air door adjusting driver 6 and spiral conveying controller 7.Described charging medium sensor 1, discharging coal dust medium sensor 2 and discharging gangue medium sensor 3 are and become medium capacitance sensor, are arranged on respectively in charging aperture and discharging sampling container 12.
The output of described air door adjusting driver 6 connects the size that air door valve 11 can control air door, to adjust the effect of second level sorting.The output of described spiral conveying controller 7 connects screw conveying device 10 to control to enter the size of the conveying amount of second level sorting.Described charging medium sensor 1, main control system 4 and eddy current motor variable-frequency speed-regulating controller 5 control first order sorting (roughly selecting); Described discharging coal dust medium sensor 2 discharging gangue medium sensor 3, main control system air door adjusting driver and spiral conveying controller control second level sorting (selected).
As shown in Figure 2, first order Grading System comprises charging medium sensor 1, turbo-dynamo 8, turbine 9 and eddy current sorting unit 13, and wherein turbo-dynamo 8 connects turbo-dynamo variable-frequency speed-regulating controller; Second level Grading System comprises screw conveying device 10, air door valve 11, discharging sampling container 12, pneumatic separation device 14, discharging coal dust medium sensor 2 and discharging gangue medium sensor 3, wherein the drive motors of screw conveying device 10 connects spiral conveying controller 7, air door valve 11 is by driving stepper motor, and stepper motor is given a dinner for a visitor from afar an adjusting driver 6.Coal dust sprays from discharging opening, discharging sampling container 12 is fallen into by the baffle part of discharging opening, the outlet of adjusting is arranged at the bottom of discharging sampling container 12, and can ensure that the coal sample in container covers the medium sensor pole plate of the inside, the coal dust simultaneously also constantly renewed enters.The sampling of spoil powder also adopts same principle.
Be become dielectric capacitance Fundamentals of Sensors block diagram shown in Fig. 3, testing circuit is by signal generating circuit 15, operational amplifier 16, peak detection circuit 17, standard capacitance C
0with capacitance sensor C
xform.Signal generating circuit 15, operational amplifier 16, peak detection circuit 17 connect successively, are provided with standard capacitance C between signal generating circuit 15, operational amplifier 16
0, standard capacitance C
0be provided with between peak detection circuit 17 with operational amplifier 16 phase and connect capacitance sensor C
x.Wherein C
xthat capacitance sensor represents charging medium sensor 1, discharging coal dust medium sensor 2 and discharging gangue medium sensor 3.The signal behavior Wave form generator circuit ICL8038 of signal generating circuit 15, the model of operational amplifier 16 selects LM324, and the model of peak detection circuit 17 selects PKD01.Output signal and capacitance sensor C
xcapacitance proportional, detected the ratio of coal dust and spoil in charging medium, discharging coal dust medium and discharging gangue medium by the capacitance variation of capacitance sensor.
Utilize above-mentioned control system to the control method of dry separation device:
A, first setting become dielectric capacitance sensor and detect the output voltage of pure coal dust and pure spoil powder as calibration value, and suppose that the output voltage calibration value becoming the pure coal dust that dielectric capacitance sensor detects is M, the output voltage calibration value of the pure coal gangue powder of detection is N;
B, when material enters turbine sorting unit 13 from charging aperture, be located at the charging medium sensor 1 Real-time Collection signal of porch, by detection signal be sent to main control system 4, judge the amount containing spoil composition in the material of coal separation, the speed of controlled vortex flow motor variable-frequency speed-regulating controller 5 carries out first order sorting;
C, enter pneumatic separation device 14 through screw conveying device 10 when the material of first order sorting, utilize the Detection Information that the discharging coal dust medium sensor 2 of coal dust discharging port A and the discharging gangue medium sensor 3 of gangue discharging opening B obtain, automatic control storm door valve 11 and screw conveying device 10, by the control of air quantity and conveying amount, make the coal dust of coal dust discharging opening not containing spoil, the spoil of gangue discharging opening, not containing coal dust, achieves second level sorting;
When the discharging of coal dust discharging port A is less than by coal dust medium sensor 2 detection signal the calibration value detected pure coal dust, then judge in coal dust discharging port A containing colliery powder, now reduce to enter the material of second level sorting by controlling screw conveying device 10, and reduce air quantity adjustment by controlling air door valve 11, finally make the coal dust of coal dust discharging port A not containing spoil;
When the discharging of gangue discharging opening B is greater than the calibration value to pure spoil powder detection by gangue medium sensor 3 detection signal, then judge in gangue discharging opening B containing coal dust, now increase by controlling screw conveying device 10 material entering second level sorting, and increase air quantity adjustment by controlling air door valve 11, finally make in the colliery powder of gangue discharging opening B not containing coal dust.
If when the detected value of charging medium sensor 1 is greater than (M-N)/2, then represent that coal dust ratio is higher than colliery powder, otherwise coal dust ratio is less than colliery powder; If the detected value of discharging coal dust medium sensor 2 is less than M, then represent in discharging containing colliery powder; If the detected value of discharging gangue medium sensor 3 is greater than N, then represent in discharging containing coal dust.The principle of first order sorting and second level sorting is gravity principle, and namely crucial coal dust is different with the gravity of colliery powder carries out sorting.In a first stage, according to the signal of charging medium sensor 1, ratio shared by preliminary judgement gangue, gangue ratio is large, then eddy current motor variable-frequency speed-regulating controller 5 controls to produce larger wind eddies stream, the gangue of larger particles is tentatively selected, the remaining material containing coal dust enters second level separation system, in the separation system of the second level, then according to the Detection Information that the discharging gangue medium sensor 3 of the discharging coal dust medium sensor 2 and gangue discharging opening B that utilize coal dust discharging port A obtains, judge whether to reach best separating effect, and automatically control.
Claims (1)
1. the control system of a dry separation device, it is characterized in that: it comprises main control system (4), the input of main control system (4) is respectively equipped with the charging medium sensor (1) being located at turbine sorting unit (13) charging aperture place, be located at the discharging coal dust medium sensor (2) of pneumatic separation device (14) coal dust discharging opening (A) and the discharging gangue medium sensor (3) of gangue discharging opening (B), the output of main control system (4) is respectively equipped with eddy current motor variable-frequency speed-regulating controller (5), air door adjusting driver (6) and spiral conveying controller (7), the output of described eddy current motor variable-frequency speed-regulating controller (5) is connected on the turbo-dynamo (8) of turbine sorting unit (13), the output of described spiral conveying controller (7) is connected on screw conveying device (10), the output of described air door adjusting driver (6) is connected on air door valve (11), the control of first order sorting is made up of charging medium sensor (1), main control system (4) and eddy current motor variable-frequency speed-regulating controller (5), the control of second level sorting is made up of discharging coal dust medium sensor (2), discharging gangue medium sensor (3), main control system (4), air door adjusting driver (6) and spiral conveying controller (7), described first order Grading System comprises charging medium sensor (1), turbo-dynamo (8), turbine (9) and eddy current sorting unit (13), and wherein turbo-dynamo (8) connects turbo-dynamo variable-frequency speed-regulating controller, second level Grading System comprises screw conveying device (10), air door valve (11), discharging sampling container (12), pneumatic separation device (14), discharging coal dust medium sensor (2) and discharging gangue medium sensor (3), wherein the drive motors of screw conveying device (10) connects spiral conveying controller (7), air door valve (11) is by driving stepper motor, and stepper motor is given a dinner for a visitor from afar an adjusting driver (6), coal dust sprays from discharging opening, falls into discharging sampling container (12) by the baffle part of discharging opening, and the outlet of adjusting is arranged at the bottom of discharging sampling container (12), to ensure that the coal sample in container covers the medium sensor pole plate of the inside.
2. the control system of dry separation device according to claim 1, is characterized in that: described charging medium sensor (1), discharging coal dust medium sensor (2) and discharging gangue medium sensor (3) are and become medium capacitance sensor.
3. the control system of dry separation device according to claim 2, it is characterized in that: described change medium capacitance sensor comprises the signal generating circuit (15), operational amplifier (16), the peak detection circuit (17) that connect successively, and signal generating circuit (15), operational amplifier are provided with standard capacitance C between (16)
0, standard capacitance C
0be provided with between peak detection circuit (17) with operational amplifier (16) mutually and connect capacitance sensor C
x.
4. use the control method of the control system of dry separation device described in claim 1, it is characterized in that:
A, first setting discharging coal dust medium sensor (2) and discharging gangue medium sensor (3) detect the output voltage of pure coal dust and pure spoil powder as two calibration values;
B, when material enters turbine sorting unit (13) from charging aperture, be located at charging medium sensor (1) the Real-time Collection signal of porch, by detection signal be sent to main control system (4), judge the amount containing spoil composition in the material of coal separation, the speed of controlled vortex flow motor variable-frequency speed-regulating controller (5) carries out first order sorting;
C, enter pneumatic separation device (14) through screw conveying device (10) when the material of first order sorting, by the Detection Information that the discharging coal dust medium sensor (2) of coal dust discharging opening (A) and the discharging gangue medium sensor (3) of gangue discharging opening (B) obtain, automatic control storm door valve (11) and screw conveying device (10), carry out the control of air quantity and conveying amount, make the coal dust of coal dust discharging opening not containing spoil, the spoil of gangue discharging opening, not containing coal dust, achieves second level sorting;
When the discharging of coal dust discharging opening (A) is less than by discharging coal dust medium sensor (2) detection signal the calibration value detected pure coal dust, then judge in coal dust discharging opening (A) containing colliery powder, now reduce to enter the doses of second level sorting by controlling screw conveying device (10), and adjust by controlling air door valve (11) reduction air quantity, finally make the coal dust of coal dust discharging opening (A) not containing spoil;
When the discharging of gangue discharging opening (B) is greater than the calibration value to pure spoil powder detection by discharging gangue medium sensor (3) detection signal, then judge in gangue discharging opening (B) containing coal dust, now increase by controlling screw conveying device (10) material entering second level sorting, and adjust by controlling air door valve (11) increase air quantity, finally make in the colliery powder of gangue discharging opening (B) not containing coal dust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310047002.1A CN103121011B (en) | 2013-02-05 | 2013-02-05 | Control system and method for dry method sorting device |
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| CN201310047002.1A CN103121011B (en) | 2013-02-05 | 2013-02-05 | Control system and method for dry method sorting device |
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| CN103121011B true CN103121011B (en) | 2015-04-01 |
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| CN108388121B (en) * | 2018-03-06 | 2020-11-10 | 辽宁天安科技有限公司 | Fuzzy logic control method of mechanical movable sieve jig |
| CN113426672B (en) * | 2021-07-05 | 2023-03-07 | 云南昆船烟草设备有限公司 | Multi-time material throwing air separation system |
| CN116060321B (en) * | 2023-03-14 | 2023-07-07 | 天津美腾科技股份有限公司 | Coal gangue sorting and adjusting method and device and nonvolatile storage medium |
| CN116984114B (en) * | 2023-09-25 | 2024-02-02 | 天津美腾科技股份有限公司 | Digital-to-analog cyclone control method and system |
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| US4487577A (en) * | 1982-10-27 | 1984-12-11 | Lecorp, Inc. | Adaptive control for thermal dryer |
| US5784974A (en) * | 1997-04-22 | 1998-07-28 | General Signal Corporation | System for improving fuel feed control of volumetric coal feeders |
| CN201141725Y (en) * | 2007-07-13 | 2008-10-29 | 缪建通 | Automation control device for vertical kiln discharge |
| CN202290588U (en) * | 2011-10-27 | 2012-07-04 | 山东博润工业技术有限公司 | Dry-method gangue discharging and coal dressing system |
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