CN201514571U - Electromagnetic vibration high frequency vibrating screen digital control system - Google Patents
Electromagnetic vibration high frequency vibrating screen digital control system Download PDFInfo
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- CN201514571U CN201514571U CN2009201045517U CN200920104551U CN201514571U CN 201514571 U CN201514571 U CN 201514571U CN 2009201045517 U CN2009201045517 U CN 2009201045517U CN 200920104551 U CN200920104551 U CN 200920104551U CN 201514571 U CN201514571 U CN 201514571U
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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
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- 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
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Abstract
The utility model relates to an electromagnetic vibration high frequency vibrating screen digital control system, belonging to the field of control technology. The system aims at improving the control accuracy and simplifying the control operation of a high frequency vibrating screen. The system has the technical scheme that a control system consists of a central control system and a plurality of screening machine numerical control units, wherein the central control system consists of an industrial personal computer and a display; the plurality of screening machine numerical control units have communication with the industrial personal computer by a 485 bus; and output ends of the screening machine numerical control units are used for controlling an electromagnetic vibration exciter of an electromagnetic screen. Compared with the traditional control device, the system has simple and convenient operation, high adjustment accuracy and complete control function, can realize remote centralized control of a plurality of screening machines, and can greatly improve the working efficiency of operators and the management level of the screening machines.
Description
Technical field
The utility model relates to a kind of system that is used to control the electromagnetic high frequency vibrating screen running parameter, belongs to the control technology field.
Background technology
Electromagnetic high frequency vibrating screen is the widely used fine screening plants of industry such as ore dressing, coal separation, building materials, chemical industry, food.The electromagnetic exciter that drives the screen cloth vibration is controlled by thyristor, traditional high-frequency electromagnetic vibration vibration sieve is regulated the conduction angle of each thyristor by a series of potentiometer knobs that are arranged on the electrical control cubicles panel, thereby regulates the screen(ing) machine amplitude in the mode of regulating screen(ing) machine vibrator output power.This control method not only degree of regulation is low, and because vibrator quantity many (the vibrator quantity of a large-scale electromagnetic sieve can reach more than 20), the corresponding potentiometer of each vibrator causes operation very loaded down with trivial details, and work efficiency is lower.In addition, because this control device lacks communication function, supvr and operator can not in time understand the screen(ing) machine running parameter and adjust, and also can't realize remote centralized control.
Summary of the invention
It is a kind of easy to operate, quick that the purpose of this utility model is to provide, the electromagnetic high frequency vibrating screen digital control system that control accuracy is high.
The alleged problem of the utility model realizes with following technical proposals:
A kind of electromagnetic high frequency vibrating screen digital control system, form by central control system and a plurality of screen(ing) machine numerical control unit, described central control system is made up of industrial computer, display, all by 485 bus communications, their output terminal is controlled the electromagnetic exciter of electromagnetic sieve between described a plurality of screen(ing) machine numerical control unit and the industrial computer.
Above-mentioned electromagnetic high frequency vibrating screen digital control system, described screen(ing) machine numerical control unit is made up of single-chip microcomputer, zero cross detection circuit, screen(ing) machine amplitude regulating circuit and 485 communication interface circuit, described zero cross detection circuit is made up of power transformer and thyristor phase shift flip chip, the input termination screen(ing) machine power supply of described power transformer, output terminal meets the V of thyristor phase shift flip chip through the RC wave filter
SYNCEnd, the RB7 end of the Q1 termination single-chip microcomputer of described thyristor phase shift flip chip; Described screen(ing) machine amplitude regulating circuit is made up of with eight identical driver elements of structure eight road control chips, described eight road control chips adopt TPIC6273, its D0～D8 input end connects the RD0/PSP0～RD7/PSP7 end of single-chip microcomputer respectively, DRAIN1～DRAIN8 output terminal respectively connects a driver element, described driver element is made up of pulse transformer and thyristor, the input end of described pulse transformer connects an output terminal of eight road control chips through current-limiting resistance, the grid of output terminal control thyristor, described thyristor and a vibrator are connected in series; Described 485 communication interface circuit are made up of 485 communication modules, and the RO of described 485 communication modules, DI end connects the RXD and the TXD end of single-chip microcomputer, its A, B termination industrial computer respectively through a photoisolator.
Above-mentioned electromagnetic high frequency vibrating screen digital control system, also comprise the fault-signal Acquisition Circuit in the formation of described screen(ing) machine numerical control unit, described fault-signal Acquisition Circuit is made of data selector, described data selector adopts 74HC151, its each input end is respectively through a screen(ing) machine contactor auxiliary contact ground connection, and output terminal Z connects the RA3 end of single-chip microcomputer.
Above-mentioned electromagnetic high frequency vibrating screen digital control system also comprises on-the-spot industrial computer in the formation of described screen(ing) machine numerical control unit, described on-the-spot industrial computer connects the communication interface of single-chip microcomputer.
The utility model is replaced the potentiometer formula control device of traditional screen(ing) machine by industrial computer and screen(ing) machine numerical control unit, when improving screen(ing) machine running parameter control accuracy, also greatly reduce operation easier, the operator uses industrial computer to concentrate monitoring, control and management to all screen(ing) machine working conditions, also can adjust the running parameter of indivedual screen(ing) machines.On-the-spot industrial computer is used at the scene screen(ing) machine being regulated control.The fault-signal Acquisition Circuit is used to gather the run signal of each screen(ing) machine, is convenient to the operation conditions that the operator understands each screen(ing) machine, in time finds and fixes a breakdown.Zero cross detection circuit can be single-chip microcomputer zero cross signal accurately is provided, and the starting point at assurance Single-chip Controlling thyristor triggering phasing degree and the waveform phase of mains supply are synchronous.Adopt photoelectricity to isolate between single-chip microcomputer and 485 communication modules, can improve system stability.
Compare with traditional control device, the utility model is simple to operation, degree of regulation is high, control function is perfect, can realize the remote centralized control of a plurality of screen(ing) machines, can improve operator's work efficiency and screen(ing) machine management level greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the electric theory diagram of screen(ing) machine numerical control unit;
Fig. 3 is the electrical schematic diagram of screen(ing) machine numerical control unit.
Each symbol is among the figure: T1, power transformer, T2, pulse transformer, GL1, GL2, photoisolator, SCR, thyristor, ZQ, vibrator, CP, on-the-spot industrial computer, U1, single-chip microcomputer, U2, thyristor phase shift flip chip, U3, data selector, U4, eight road control chips, U5,485 communication modules, R1～R8, resistance, C, electric capacity, D1, D2, diode, J, screen(ing) machine contactor auxiliary contact.
Embodiment
High-frequency electromagnetic vibration vibration sieve digital control system combines computer technology, electronic technology and network technology three, realization is to the remote centralized control of high-frequency electromagnetic vibration vibration sieve, all can arbitrarily inquire about away from the Central Control Room at scene or device context with regulation and control system in duty, running parameter and the historical record of each electromagnetic sieve.
Referring to Fig. 1, high-frequency electromagnetic vibration vibration sieve digital control system is used for controlling simultaneously 2 above electromagnetic sieves, it is mainly formed and comprises industrial computer, display and a plurality of screen(ing) machine numerical control unit, all by 485 bus communications, the output terminal of each screen(ing) machine numerical control unit is controlled the electromagnetic exciter of one or more electromagnetic sieve between a plurality of screen(ing) machine numerical control units and the industrial computer.Industrial computer is as the core of control system, and industrial computer sends instruction according to the technical parameter of setting and gives the screen(ing) machine numerical control unit during work.The screen(ing) machine numerical control unit is according to the running parameter of industrial computer instruction control screen(ing) machine.
Referring to Fig. 2, Fig. 3, single-chip microcomputer U1 carries out communication by 485 communication module U5 and industrial computer.Adopting two photoisolator GL1, GL2 to carry out photoelectricity between single-chip microcomputer U1 and 485 communication module U5 isolates, resistance R 4, R5 are current-limiting resistance, and R3, R6 are pull-up resistor, and power supply adopts not the DC/DC module on ground altogether, external power does not disturb mutually in making, and increases system stability.
For the output of control vibration accurately and efficiently, system optimization has designed zero passage detection and shaping circuit.Power transformer T1 is the mains supply step-down, sends into the input end V of thyristor phase shift flip chip U2 (TCA785) after the RC filtering circuit shaping that is made of resistance R 1 and capacitor C
SYNC, U2 is sent to single-chip microcomputer U1 by output terminal Q1 after sinusoidal waveform is converted into square wave, thereby makes single-chip microcomputer U1 obtain zero cross signal accurately.The starting point at assurance single-chip microcomputer U1 control thyristor triggering phasing degree and the waveform phase of mains supply are synchronous.Thoroughly stopped because the electric power system instability in mine, it is former thereby zero passage detection accuracy that cause is low that electric pollution is serious etc., the generation that the vibrator vibration is unstable, leak phenomenons such as shaking.
Single-chip microcomputer U1 receives the phasing degree instruction of industrial computer, with zero cross detection circuit detected zero point be that benchmark triggers thyristor SCR.The trigger pip of single-chip microcomputer U1 output is amplified rear drive pulse transformer T2 through eight road control chip U4 (TPIC6273), and pulse transformer T2 triggers thyristor SCR again, thereby reaches the purpose of control vibrator Oscillation Amplitude.D1 is a fly-wheel diode, and D2 is a commutation diode, and the surge current that resistance R 8 is used to pulse transformer T2 to produce provides bleed-off circuit, protection thyristor SCR.Each screen(ing) machine numerical control unit of this control system is controlled one or more screen(ing) machine, one eight road control chip U4 has drawn among Fig. 3, control eight vibrators, can increase the quantity of eight tunnel control main board when specifically implementing as required, make a screen(ing) machine numerical control unit control more vibrator.
When the vibrator current supply circuit breaks down, screen(ing) machine contactor auxiliary contact J closure, the warning digital quantity signal is sent to data selector U3 (74HC151), after single-chip microcomputer U1 selects a data selector U3 to read 8 alerting signals in the control loop by eight, send alerting signal by 485 buses to industrial computer again, remind the staff to carry out the accident investigation.Eight select A, B, the C termination address signal of a data selector U3.
When 485 buses break down or industrial computer goes wrong, can't carry out Long-distance Control, perhaps on-the-spot when needing interim the adjusting, the operator can regulate the running parameter of screen(ing) machine by on-the-spot industrial computer at the scene.The control function of on-the-spot industrial computer comprises the adjustment of normality amplitude, the adjustment of instantaneous amplitude by force, shakes and adjust interval time etc. by force.So at the scene under the situation that condition does not temporarily allow to stop to produce, equipment can continuous service, till allowing maintenance.The normality amplitude, by force amplitude, the parameters such as interval of shaking also can adopt the DIP switch to be provided with by force.
Claims (4)
1. electromagnetic high frequency vibrating screen digital control system, it is characterized in that, it is made up of central control system and a plurality of screen(ing) machine numerical control unit, described central control system is made up of industrial computer, display, all by 485 bus communications, their output terminal is controlled the electromagnetic exciter (ZQ) of electromagnetic sieve between described a plurality of screen(ing) machine numerical control unit and the industrial computer.
2. according to the described electromagnetic high frequency vibrating screen digital control system of claim 1, it is characterized in that, described screen(ing) machine numerical control unit is made up of single-chip microcomputer (U1), zero cross detection circuit, screen(ing) machine amplitude regulating circuit and 485 communication interface circuit, described zero cross detection circuit is made up of power transformer (T1) and thyristor phase shift flip chip (U2), the input termination screen(ing) machine power supply of described power transformer (T1), output terminal meets the V of thyristor phase shift flip chip (U2) through the RC wave filter
SYNCEnd, the RB7 end of the Q1 termination single-chip microcomputer (U1) of described thyristor phase shift flip chip (U2); Described screen(ing) machine amplitude regulating circuit is made up of with eight identical driver elements of structure eight road control chips (U4), described eight road control chips (U4) adopt TPIC6273, its D0～D8 input end connects the RD0/PSP0～RD7/PSP7 end of single-chip microcomputer (U1) respectively, DRAIN1～DRAIN8 output terminal respectively connects a driver element, described driver element is made up of pulse transformer (T2) and thyristor (SCR), the input end of described pulse transformer (T2) connects an output terminal of eight road control chips (U4) through current-limiting resistance (R7), the grid of output terminal control thyristor (SCR), described thyristor (SCR) is connected in series with a vibrator (ZQ); Described 485 communication interface circuit are made up of 485 communication modules (U5), and RO, the DI end of described 485 communication modules (U5) connects the RXD and the TXD end of single-chip microcomputer (U1), its A, B termination industrial computer respectively through a photoisolator.
3. according to the described electromagnetic high frequency vibrating screen digital control system of claim 2, it is characterized in that, also comprise the fault-signal Acquisition Circuit in the formation of described screen(ing) machine numerical control unit, described fault-signal Acquisition Circuit is made of data selector (U3), described data selector (U3) adopts 74HC151, its each input end is respectively through screen(ing) machine contactor auxiliary contact (J) ground connection, and output terminal Z connects the RA3 end of single-chip microcomputer (U1).
4. according to the described electromagnetic high frequency vibrating screen digital control system of claim 2, it is characterized in that also wrap on-the-spot industrial computer (CP) in the formation of described screen(ing) machine numerical control unit, described on-the-spot industrial computer (CP) connects the communication interface of single-chip microcomputer (U1).
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| CN2009201045517U CN201514571U (en) | 2009-09-18 | 2009-09-18 | Electromagnetic vibration high frequency vibrating screen digital control system |
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| CN2009201045517U CN201514571U (en) | 2009-09-18 | 2009-09-18 | Electromagnetic vibration high frequency vibrating screen digital control system |
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| CN201514571U true CN201514571U (en) | 2010-06-23 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102193533A (en) * | 2011-01-12 | 2011-09-21 | 大连佳峰电子有限公司 | Motion control system |
| CN103286064A (en) * | 2013-05-08 | 2013-09-11 | 辽宁东戴河新区和陆重科有限公司 | Numerical-control solenoid-driven vibrating dust removing and classifying screen |
| CN104126154A (en) * | 2011-12-23 | 2014-10-29 | 西门子公司 | Automated project design of control technology for technical system |
| CN106970570A (en) * | 2017-05-11 | 2017-07-21 | 杭州电子科技大学 | A kind of vibration control method for electrovibrating feeder |
| CN107116023A (en) * | 2017-04-06 | 2017-09-01 | 杜亚君 | Seeder assisted screening device |
| CN113695220A (en) * | 2021-01-15 | 2021-11-26 | 临沂矿业集团菏泽煤电有限公司 | Coal screening digital control system for coal mine and control method thereof |
-
2009
- 2009-09-18 CN CN2009201045517U patent/CN201514571U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102193533A (en) * | 2011-01-12 | 2011-09-21 | 大连佳峰电子有限公司 | Motion control system |
| CN104126154A (en) * | 2011-12-23 | 2014-10-29 | 西门子公司 | Automated project design of control technology for technical system |
| CN103286064A (en) * | 2013-05-08 | 2013-09-11 | 辽宁东戴河新区和陆重科有限公司 | Numerical-control solenoid-driven vibrating dust removing and classifying screen |
| CN103286064B (en) * | 2013-05-08 | 2016-04-20 | 辽宁东戴河新区和陆重科有限公司 | A kind of numerical control electromagnetic drives vibrating dust removing classifying screen |
| CN107116023A (en) * | 2017-04-06 | 2017-09-01 | 杜亚君 | Seeder assisted screening device |
| CN107116023B (en) * | 2017-04-06 | 2019-06-04 | 杜亚君 | Seeder assisted screening device |
| CN106970570A (en) * | 2017-05-11 | 2017-07-21 | 杭州电子科技大学 | A kind of vibration control method for electrovibrating feeder |
| CN106970570B (en) * | 2017-05-11 | 2019-04-02 | 杭州电子科技大学 | A kind of vibration control method for electrovibrating feeder |
| CN113695220A (en) * | 2021-01-15 | 2021-11-26 | 临沂矿业集团菏泽煤电有限公司 | Coal screening digital control system for coal mine and control method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Electromagnetic vibration high frequency vibrating screen digital control system Effective date of registration: 20120929 Granted publication date: 20100623 Pledgee: Bank of Communications Ltd Tangshan branch Pledgor: Tangshan Land Sky Science and Technology Co., Ltd. Registration number: 2012990000583 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20150918 |
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| EXPY | Termination of patent right or utility model |