CN103214069A - Control system for automatic chemical dosing in flocculation process - Google Patents
Control system for automatic chemical dosing in flocculation process Download PDFInfo
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- CN103214069A CN103214069A CN2013101487937A CN201310148793A CN103214069A CN 103214069 A CN103214069 A CN 103214069A CN 2013101487937 A CN2013101487937 A CN 2013101487937A CN 201310148793 A CN201310148793 A CN 201310148793A CN 103214069 A CN103214069 A CN 103214069A
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- flocculation process
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Abstract
The invention discloses a control system for automatic chemical dosing in the flocculation process. The system comprises an electromagnetic flowmeter, a PLC (Programmable Logic Controller) control system, a touch screen display, a frequency converter and a screw pump, wherein output ends of the electromagnetic flowmeter and the touch screen display are connected with an input end of the PLC control system; an output end of the PLC control system is connected with an input end of the touch screen display and an input end of the frequency converter; and an output end of the frequency converter is connected with an input end of the screw pump. The control system has the beneficial effects that all operations are controlled completely by a computer; manual operation is saved; intellectualization and optimization effects which cannot be achieved by the manual operation are achieved on system control; the chemical dosing is automatically controlled; the flocculation effect is improved; the cost is saved; the content of a flocculating agent in effluent is reduced; and the flowmeter and a densimeter are adopted for controlling the chemical dosing, so that the chemical dosing effect is more accurate.
Description
Technical field
The present invention relates to the flocculation of sludge process field, especially relate to a kind of flocculation process automatic chemical dosing Controlling System.
Background technology
Along with the growth of building trade and the construction of urban infrastructure, the discarded slurry that produces in the project construction process is also increasing, has a strong impact on The Surroundings in Cities and handles load.Be to handle discarded slurries such as mud, reduce the quantity discharged of mud, both at home and abroad building mud, the useless slurry of pottery and mud that sewage work produced are furtherd investigate, explore the treatment and disposal method of seeking an economic environmental protection.By in technical process, realizing reducing the output of mud, reduce the quantity discharged of mud on the one hand; On the other hand by the mud that produces is carried out recycling, as making life fiberboard, the grey slag cement of system and ash concrete, system sludge brick and floor tile and the utilization of mud compost etc.
The generation of mud is present in numerous industry fields, as producing a large amount of mud in the fields such as building trade, ceramic industry, mining site washup, waterworks, sewage work, river course mediation and lake dredging up and knitting mill, printing and dyeing mill, section bar factory, food factory, the moisture percentage in sewage sludge that is produced is generally higher, presents with liquid state to flow.Realize the recycle of mud, the most economical is earlier mud to be carried out processed, is re-used as down the processing of one processing sequence.Nowadays the more common treatment process of sludge dewatering there are the natural mummification of mud, the mechanical dehydration of mud, the drying of mud and the burning of mud etc., wherein comparatively being suitable for the building site, to carry out the technology of slurry dewatering be mechanical dehydration, and mechanical dehydration comparatively commonly used be vacuum filtering and dewatering, filter-press dehydration, roll extrusion dehydration and centrifuge dehydration etc.
Realize an effectively operation of slurry dewatering machinery, reach purpose efficiently, need a good Controlling System, good Controlling System not only can replace manual operation, minimizing is to the operational ton of machinery, and the operation of Controlling System accurately, in time the variation for the treatment of processes is adjusted accordingly, reach optimal treatment, improve the sludge dewatering effect.Intelligence dispensing to slurry dewatering machinery at present still lacks a comparatively effectively automatic control system, perhaps has the automatic chemical dosing system, yet does not reach the net effect of in time regulating control with the flooding parameter fluctuation.
Summary of the invention
The present invention seeks to overcoming above-mentioned defective, the invention provides the automatic control system in a kind of flocculation of sludge dosing processing.
Technical scheme of the present invention is:
A kind of flocculation process automatic chemical dosing Controlling System, comprise magnetic flow meter, PLC Controlling System, touch-screen display, frequency transformer and spiral pump, the output terminal of described magnetic flow meter and described touch-screen display is connected in the input terminus of described PLC Controlling System, the output terminal of described PLC Controlling System connects the input terminus of described touch-screen display and the input terminus of described frequency transformer, and the output terminal of described frequency transformer connects the input terminus of described spiral pump.
Flocculation process automatic chemical dosing Controlling System also is provided with on-line densimeter, and the output terminal of described on-line densimeter connects the input terminus of described PLC Controlling System.
Described on-line densimeter is monitored the density of pipeline fluid, and institute's flow measurement value is sent to described PLC Controlling System with current signal, and institute's flow measurement value is sent to described touch-screen display, institute's flow measurement value is shown at described touch-screen display.
Described magnetic flow meter is used to monitor the pipeline fluctuations in discharge, and institute's flow measurement value is sent to described PLC Controlling System with current signal, and institute's flow measurement value is sent to described touch-screen display, and institute's flow measurement value is shown at described touch-screen display.
Described current signal is a simulating signal.
Described PLC Controlling System transmits signal to described on-line densimeter and handles and send corresponding control command, finishes the variation of dispensing by executive system.
Described PLC Controlling System transmits signal to described magnetic flow meter and handles and send corresponding control command, finishes the variation of dispensing by executive system.
Described spiral pump and frequency transformer are used in combination, and control the water pump velocity of rotation by changing spiral pump working power frequency, regulate pump capacity, thus realize pharmaceutical quantities accurately add requirement.
The invention has the beneficial effects as follows that the present invention directly controls all operations fully by computer, not only save manual operation, and in system's control, reach the inaccessiable intellectuality of manual operation, optimized effect.Realize the automatic control that medicament adds, improve flocculating effect, save cost, reduce the content of water outlet flocculation agent, adopt the control of offeing medicine of under meter and densometer simultaneously, make the effect of offeing medicine more accurate.
Description of drawings
The present invention will be further described for accompanying drawing, but the content in the accompanying drawing does not constitute any limitation of the invention.
Fig. 1 is the synoptic diagram of one of them embodiment of the present invention.
1 is magnetic flow meter in the accompanying drawing; 2 is on-line densimeter; 3 is the PLC Controlling System; 4 is touch-screen display; 5 is frequency transformer; 6 is spiral pump.
Embodiment
A kind of flocculation process automatic chemical dosing Controlling System, as Fig. 1, comprise magnetic flow meter 1, on-line densimeter 2, PLC Controlling System 3, touch-screen display 4, frequency transformer 5 and spiral pump 6, the output terminal of described magnetic flow meter 1, on-line densimeter 2 and described touch-screen display 4 is connected in the input terminus of described PLC Controlling System 3, the output terminal of described PLC Controlling System 3 connects the input terminus of described touch-screen display 4 and the input terminus of described frequency transformer 5, and the output terminal of described frequency transformer 5 connects the input terminus of described spiral pump 6.
During operation, the density of 2 pairs of pipeline fluids of described on-line densimeter is monitored, and institute's flow measurement value is sent to described PLC Controlling System 3 with analog current signal, and institute's flow measurement value is sent to described touch-screen display 4, institute's flow measurement value is shown at described touch-screen display 4, make things convenient for the user to read and operate; Described magnetic flow meter 1 is used to monitor the pipeline fluctuations in discharge, and magnetic flow meter 1 comprises the transmitter and the upper end signal converter of direct contact tube track media, based on Faraday's electromagnetic indution law, and the pipeline liquid flow
Transmitter is sent to transmodulator with the inductive emf that measures, transmodulator electrode detection to induced potential signal Ex convert unified standard direct current signal to through amplification, be sent to PLC Controlling System 3 again, and be sent to simultaneously on the touch-screen display 4, realize the demonstration of pipeline flow numerical value, make things convenient for the user to read and operate.Programmable control system PLC is a kind of electronic system of digital operation operation, and in data acquisition phase, PLC in turn reads in all input states and data with scan mode, and in this stage, PLC Controlling System 3 is a setup parameter with the numerical value that is provided with on the touch-screen; In the user program execute phase, PLC order from top to bottom scans user program successively, and according to the funtcional relationship that magnetic flow meter and densometer institute's transmission signal and user set, control signal is carried out logical operation; At output stage, realize system's on-line monitoring, need under PLC program continuously running duty, to realize, therefore,, receive from the monitor signal transmitted in real time, and this is carried out the control of signal in the inner implementation of PLC program cyclical operation; 3 pairs of described on-line densimeters 2 of described PLC Controlling System, magnetic flow meter 1 and touch display screen pass 4 feed signals and handle and frequency transformer 5 is sent corresponding control command, carry out the variation of dispensing by spiral pump 6; During spiral pump 6 work, the seal cavity that just enters screw thread and pump case after liquid is inhaled into and enclosed, when the active screw rod rotates, spiral pump 6 sealed volume improve spiral pump pressure under the extruding of thread, and move vertically, so spiral pump 6 comparatively is suitable for the high viscosity fluid effect, spiral pump 6 is used in combination with frequency transformer 5, control the water pump velocity of rotation by changing spiral pump 6 working power frequencies, regulate pump capacity, thus reach add pharmaceutical quantities accurately add requirement.
Below only be the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes content of the present invention and accompanying drawing scheme to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (8)
1. flocculation process automatic chemical dosing Controlling System, it is characterized in that: comprise magnetic flow meter, PLC Controlling System, touch-screen display, frequency transformer and spiral pump, the output terminal of described magnetic flow meter and described touch-screen display is connected in the input terminus of described PLC Controlling System, the output terminal of described PLC Controlling System connects the input terminus of described touch-screen display and the input terminus of described frequency transformer, and the output terminal of described frequency transformer connects the input terminus of described spiral pump.
2. flocculation process automatic chemical dosing Controlling System according to claim 1 is characterized in that: also be provided with on-line densimeter, the output terminal of described on-line densimeter connects the input terminus of described PLC Controlling System.
3. flocculation process automatic chemical dosing Controlling System according to claim 2, it is characterized in that: described on-line densimeter is monitored the density of pipeline fluid, and institute's flow measurement value is sent to described PLC Controlling System with current signal, and institute's flow measurement value is sent to described touch-screen display, institute's flow measurement value is shown at described touch-screen display.
4. flocculation process automatic chemical dosing Controlling System according to claim 1, it is characterized in that: described magnetic flow meter is used to monitor the pipeline fluctuations in discharge, and institute's flow measurement value is sent to described PLC Controlling System with current signal, and institute's flow measurement value is sent to described touch-screen display, institute's flow measurement value is shown at described touch-screen display.
5. according to claim 3 or 4 described flocculation process automatic chemical dosing Controlling System, it is characterized in that: described current signal is a simulating signal.
6. flocculation process automatic chemical dosing Controlling System according to claim 3 is characterized in that: described PLC Controlling System transmits signal to described on-line densimeter and handles and send corresponding control command, finishes the variation of dispensing by executive system.
7. flocculation process automatic chemical dosing Controlling System according to claim 4 is characterized in that: described PLC Controlling System transmits signal to described magnetic flow meter and handles and send corresponding control command, finishes the variation of dispensing by executive system.
8. flocculation process automatic chemical dosing Controlling System according to claim 1, it is characterized in that: described spiral pump and frequency transformer are used in combination, control the water pump velocity of rotation by changing spiral pump working power frequency, regulate pump capacity, thus realize pharmaceutical quantities accurately add requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013101487937A CN103214069A (en) | 2013-04-25 | 2013-04-25 | Control system for automatic chemical dosing in flocculation process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101487937A CN103214069A (en) | 2013-04-25 | 2013-04-25 | Control system for automatic chemical dosing in flocculation process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107720848A (en) * | 2017-11-08 | 2018-02-23 | 广东永利坚铝业有限公司 | A kind of aluminium section bar produces automatic wastewater treatment device |
| WO2023065897A1 (en) * | 2021-10-22 | 2023-04-27 | 江苏科技大学 | High water content waste slurry dewatering/brick-making integrated system and implementation method |
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| CN202744407U (en) * | 2012-08-27 | 2013-02-20 | 成都众山科技有限公司 | Wireless remote detection and control system applied to sewage treatment in oil field |
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2013
- 2013-04-25 CN CN2013101487937A patent/CN103214069A/en active Pending
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| DE4112391A1 (en) * | 1991-04-16 | 1992-10-22 | Passavant Werke | Optimising chemical usage in flocculation process - for removing residual phosphorus and suspended matter from clarification plant discharge |
| CN1958116A (en) * | 2006-10-16 | 2007-05-09 | 太原理工大学 | System and method for automatic adding flocculant |
| CN200991693Y (en) * | 2006-12-06 | 2007-12-19 | 北京埃森恒业科技有限公司 | Water washer for printed circuit board |
| CN200995099Y (en) * | 2007-01-15 | 2007-12-26 | 胡杭虎 | Automatic flocculate feeder during filter press flow path |
| CN201364483Y (en) * | 2008-12-05 | 2009-12-16 | 上海电机学院 | Small-sized sewage treatment control device |
| CN202159248U (en) * | 2011-07-13 | 2012-03-07 | 北京约谛化工技术公司 | Water treatment controller in recirculated cooling water system |
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| CN102351303A (en) * | 2011-10-13 | 2012-02-15 | 浙江大学 | Secondary chlorine dosing system based on real-time feedback |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107720848A (en) * | 2017-11-08 | 2018-02-23 | 广东永利坚铝业有限公司 | A kind of aluminium section bar produces automatic wastewater treatment device |
| WO2023065897A1 (en) * | 2021-10-22 | 2023-04-27 | 江苏科技大学 | High water content waste slurry dewatering/brick-making integrated system and implementation method |
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Application publication date: 20130724 |