CN107694342A - A kind of counter-infiltration system pH value intelligent control circuit figure - Google Patents
A kind of counter-infiltration system pH value intelligent control circuit figure Download PDFInfo
- Publication number
- CN107694342A CN107694342A CN201711072816.5A CN201711072816A CN107694342A CN 107694342 A CN107694342 A CN 107694342A CN 201711072816 A CN201711072816 A CN 201711072816A CN 107694342 A CN107694342 A CN 107694342A
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- Prior art keywords
- protection diode
- counter
- pins
- control circuit
- intelligent control
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/12—Controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/18—Details relating to membrane separation process operations and control pH control
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A kind of counter-infiltration system pH value intelligent control circuit figure; the low-pressure side series connection of voltage transformer is provided with rectifier bridge; the positive output end of rectifier bridge is connected with the anode of protection diode; the negative electrode of protection diode is connected with single-chip microcomputer No. 40 pins; the negative output terminal of rectifier bridge is connected with the negative electrode of protection diode; the anode of protection diode is connected with single-chip microcomputer No. 20 pins, and the positive-negative output end of rectifier bridge is in parallel to be provided with electric capacity；The negative electrode of protection diode is connected with one end of auxiliary reclay coil, and the other end of auxiliary reclay coil is connected with the negative electrode of protection diode, and the anode of protection diode is connected with single-chip microcomputer No. 39 pins；The positive output end of PH instrument is connected with resistance, and the other end of resistance is connected with single-chip microcomputer No. 12 pins, and the negative output terminal of PH instrument is connected with single-chip microcomputer No. 13 pins.The beneficial effects of the present invention are：It can realize in the case of unattended, regulate and control the pH value of water according to demand, save manpower and resource.
Description
Technical field
The present invention relates to circuit design field, in particular to a kind of counter-infiltration system pH value intelligent control circuit figure.
Background technology
The basic functional principle of counter-infiltration is：With special high-pressure hydraulic pump, raw water is added into 6-20 kilograms of pressure, made
Raw water penetrates the reverse osmosis membrane that aperture only has 0.0001 micron under the effect of the pressure.Chemical ion and bacterium, fungi, virus
Body can not be by discharging, only allowing hydrone of the volume less than 0.0001 micron and solvent to pass through with waste water.In cartridge filter
Equipped with the filter core that pore size filter is 5 μm.These filter cores can filter out the particle that any size is more than 5 μm.Downstream RO films are played
Protective effect, otherwise RO films surface easily fouling.More common permeable membrane classification is PA membrane, and membranous type formula is that rolling is compound
Film, the desalination rate of the film of this kind of pattern is up to 99.5%.Due to RO films easily in by water pH value, chlorine residue and water temperature influenceed, therefore RO
Have strict demand to influent quality before film operation, pH value need to be in the range of 3.0-10.0, and index goes beyond the scope, it is equal there is a possibility that
Permeable membrane is deformed, and so as to influence effluent quality and shorten the service life of film, and because enters the product water institute of EDI systems
PH value is needed preferably, therefore to need in counter-infiltration system the pH value of strict control water about in 8.0-8.5.
The content of the invention
The technical problem to be solved in the present invention is to overcome above technological deficiency, there is provided a kind of counter-infiltration system pH value intelligence
Electric operation control circuit figure.
To solve the above problems, present invention offer technical scheme is:A kind of counter-infiltration system pH value intelligent control circuit figure,
Including voltage transformer VT, the high-pressure side connection power supply of the voltage transformer VT, the low-pressure side string of the voltage transformer VT
Connection is provided with rectifier bridge UR, and the positive output end of the rectifier bridge UR is connected with protection diode VD1 anode, the protection diode
VD1 negative electrode is connected with single chip computer89C51 No. 40 pins, and the negative output terminal of the rectifier bridge UR is with protection diode VD2's
Negative electrode is connected, and the anode of the protection diode VD2 is connected with No. 20 pins of single chip computer89C51, and the rectifier bridge UR is just
Negative output terminal parallel connection is provided with electric capacity C；The negative electrode of the protection diode VD2 is connected with one end of auxiliary reclay KA coils, institute
The other end for stating auxiliary reclay KA coils is connected with protection diode VD3 negative electrode, the anode of the protection diode VD3 with
No. 39 pins series connection of single chip computer89C51, one end of the normally-closed contact of the auxiliary reclay KA are connected with PH dosing pumps M, institute
State and be connected with power supply between the other end of the PH dosing pumps M other end and auxiliary reclay KA normally-closed contact；The PH instrument
Table is connected with power supply, and the positive output end of the PH instrument is connected with resistance R1, the other end and single-chip microcomputer of the resistance R1
89C51 No. 12 pins series connection, the negative output terminal of the PH instrument are connected with No. 13 pins of single chip computer89C51.
As an improvement, the rectifier bridge UR is by being composed in parallel again after four diodes two-by-two positive series connection, having four to draw
Go out pin, the tie point of two diode cathodes is the positive pole of full-bridge direct current output end, and the tie point of two diode cathodes is complete
The negative pole of bridge DC output end.
Further, the power supply is 220V AC voltage source.
Further, the low-pressure side output 5V alternating currents of the voltage transformer VT.
Further, the DC output end output 5V direct currents of the rectifier bridge UR.
Further, the signal code of the PH instrument output 4-20MA.
The beneficial effects of the present invention are：It can realize in the case of unattended, regulate and control the pH value of water according to demand,
Save manpower and resource.
Brief description of the drawings
Fig. 1 is a kind of circuit theory diagrams of counter-infiltration system pH value intelligent control circuit figure of the present invention.
Fig. 2 is a kind of counter-infiltration system pH value intelligent control circuit figure single chip computer89C51 pin schematic diagram of the present invention.
Embodiment
A kind of counter-infiltration system pH value intelligent control circuit figure, including voltage transformer VT, the voltage transformer VT's
High-pressure side connects power supply, and the low-pressure side series connection of the voltage transformer VT is provided with rectifier bridge UR, the positive output of the rectifier bridge UR
End is connected with protection diode VD1 anode, the negative electrode of the protection diode VD1 and No. 40 pin strings of single chip computer89C51
Connection, the negative output terminal of the rectifier bridge UR connects with protection diode VD2 negative electrode, the anode of the protection diode VD2 and
No. 20 pins series connection of single chip computer89C51, the positive-negative output end of the rectifier bridge UR is in parallel to be provided with electric capacity C；Two poles of the protection
Pipe VD2 negative electrode is connected with one end of auxiliary reclay KA coils, the other end and the protection two of the auxiliary reclay KA coils
Pole pipe VD3 negative electrode series connection, the anode of the protection diode VD3 are connected with No. 39 pins of single chip computer89C51, the centre
One end of relay KA normally-closed contact is connected with PH dosing pumps M, and the other end of the PH dosing pumps M is with auxiliary reclay KA's
Power supply is connected between the other end of normally-closed contact；The PH instrument is connected with power supply, the positive output end of the PH instrument
The other end for being connected with resistance R1, the resistance R1 is connected with No. 12 pins of single chip computer89C51, the PH instrument it is negative defeated
Go out end to connect with No. 13 pins of single chip computer89C51.
The rectifier bridge UR is by being composed in parallel again after four diodes two-by-two positive series connection, there is four leading foots, two
The tie point of diode cathode is the positive pole of full-bridge direct current output end, and the tie point of two diode cathodes is full-bridge direct current output
The negative pole at end.
The power supply is 220V AC voltage source.
The low-pressure side output 5V alternating currents of the voltage transformer VT.
The DC output end output 5V direct currents of the rectifier bridge UR.
The signal code of the PH instrument output 4-20MA.
Into pH value needed for the product water of EDI systems about in 8.0-8.5 preferably, PH instrument values are set to 8.0, when instrument value arrives
When 8.0, electric current relay output ON, at this moment PH dosing pumps are out of service；Now pH value also may proceed to rise about to 8.8, under
Drop, when dropping to 8, now PH dosings pump operation, pH value now also may proceed to decline, and about to 7.5, just rise.So follow
Ring, make the pH value of product water about between 7.5-8.8, reach the pH value of product water about 8.3 or so.
Embodiments of the invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included within scope of the presently claimed invention.
Claims (6)
- A kind of 1. counter-infiltration system pH value intelligent control circuit figure, it is characterised in that：Including voltage transformer VT, the voltage is mutual Sensor VT high-pressure side connection power supply, the low-pressure side series connection of the voltage transformer VT are provided with rectifier bridge UR, the rectifier bridge UR Positive output end connected with protection diode VD1 anode, the negative electrode of the protection diode VD1 and the 40 of single chip computer89C51 The series connection of number pin, the negative output terminal of the rectifier bridge UR are connected with protection diode VD2 negative electrode, the protection diode VD2 Anode connected with No. 20 pins of single chip computer89C51, the positive-negative output end of the rectifier bridge UR is in parallel to be provided with electric capacity C；It is described Protection diode VD2 negative electrode is connected with one end of auxiliary reclay KA coils, the other end of the auxiliary reclay KA coils To be connected with protection diode VD3 negative electrode, the anode of the protection diode VD3 is connected with No. 39 pins of single chip computer89C51, One end of the normally-closed contact of the auxiliary reclay KA is connected with PH dosing pumps M, the other end of the PH dosing pumps M with it is middle after Power supply is connected between the other end of electrical equipment KA normally-closed contact；The PH instrument is connected with power supply, the PH instrument The other end that positive output end is connected with resistance R1, the resistance R1 is connected with No. 12 pins of single chip computer89C51, the PH instrument The negative output terminal of table is connected with single chip computer89C51 No. 13 pins.
- A kind of 2. counter-infiltration system pH value intelligent control circuit figure according to claim 1, it is characterised in that：The rectification Bridge UR is by being composed in parallel again after four diodes two-by-two positive series connection, there is four leading foots, the connection of two diode cathodes Point is the positive pole of full-bridge direct current output end, and the tie point of two diode cathodes is the negative pole of full-bridge direct current output end.
- A kind of 3. counter-infiltration system pH value intelligent control circuit figure according to claim 1, it is characterised in that：The power supply For 220V AC voltage source.
- A kind of 4. counter-infiltration system pH value intelligent control circuit figure according to claim 1, it is characterised in that：The voltage Transformer VT low-pressure side output 5V alternating currents.
- A kind of 5. counter-infiltration system pH value intelligent control circuit figure according to claim 1, it is characterised in that：The rectification Bridge UR DC output end output 5V direct currents.
- A kind of 6. counter-infiltration system pH value intelligent control circuit figure according to claim 1, it is characterised in that：The PH instrument Table exports 4-20MA signal code.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711072816.5A CN107694342A (en) | 2017-11-03 | 2017-11-03 | A kind of counter-infiltration system pH value intelligent control circuit figure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711072816.5A CN107694342A (en) | 2017-11-03 | 2017-11-03 | A kind of counter-infiltration system pH value intelligent control circuit figure |
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| Publication Number | Publication Date |
|---|---|
| CN107694342A true CN107694342A (en) | 2018-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711072816.5A Pending CN107694342A (en) | 2017-11-03 | 2017-11-03 | A kind of counter-infiltration system pH value intelligent control circuit figure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995026008A1 (en) * | 1994-03-22 | 1995-09-28 | Intelligent Monitoring Systems | Detecting and classifying contaminants in water |
| CN2361626Y (en) * | 1999-02-04 | 2000-02-02 | 清华大学 | Spent chloride in water monitoring and medicine-feeding self-controlling instrument |
| CN101033096A (en) * | 2006-03-06 | 2007-09-12 | 天津市红旗环保科技有限公司 | System for on-line monitoring pH automatic base throwing machine |
| CN104090597A (en) * | 2014-07-22 | 2014-10-08 | 长沙思辰仪器科技有限公司 | Intelligent pH measurement and control system and pH measurement and control method |
| CN104925899A (en) * | 2015-05-14 | 2015-09-23 | 潍坊友容实业有限公司 | PH detection control system of brackish water desalination device |
-
2017
- 2017-11-03 CN CN201711072816.5A patent/CN107694342A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995026008A1 (en) * | 1994-03-22 | 1995-09-28 | Intelligent Monitoring Systems | Detecting and classifying contaminants in water |
| CN2361626Y (en) * | 1999-02-04 | 2000-02-02 | 清华大学 | Spent chloride in water monitoring and medicine-feeding self-controlling instrument |
| CN101033096A (en) * | 2006-03-06 | 2007-09-12 | 天津市红旗环保科技有限公司 | System for on-line monitoring pH automatic base throwing machine |
| CN104090597A (en) * | 2014-07-22 | 2014-10-08 | 长沙思辰仪器科技有限公司 | Intelligent pH measurement and control system and pH measurement and control method |
| CN104925899A (en) * | 2015-05-14 | 2015-09-23 | 潍坊友容实业有限公司 | PH detection control system of brackish water desalination device |
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Application publication date: 20180216 |