CN201678505U - Automatic device for online pH monitoring and variable-frequency medication - Google Patents
Automatic device for online pH monitoring and variable-frequency medication Download PDFInfo
- Publication number
- CN201678505U CN201678505U CN2010201001704U CN201020100170U CN201678505U CN 201678505 U CN201678505 U CN 201678505U CN 2010201001704 U CN2010201001704 U CN 2010201001704U CN 201020100170 U CN201020100170 U CN 201020100170U CN 201678505 U CN201678505 U CN 201678505U
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- valve
- solution tank
- liquid level
- variable
- level sensor
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Abstract
The utility model relates to an automatic device for online pH monitoring and variable-frequency medication, which comprises a sewage disposal valve, a material inlet, an evacuation valve, a stirrer, a filter, a metering pump, a PLC control cabinet, a pipe mixer, a buffering inspection room, a pH electrode and a liquid level sensor, wherein the bottommost end of a solution tank is provided with the sewage disposal valve, the upmost end of the solution tank is provided with the material inlet and the evacuation valve; the liquid level sensor and the stirrer are both arranged in the solution tank, and the filter is arranged in front of the metering pump inlet pipe and communicated with the solution tank. The automatic device has the advantages of being capable of accurately controlling the pH of water to be treated to lead other water treatment drugs to have the optimum efficiency and realize the variable-frequency control of the medication system, effectively preventing the excessive adding of acid or alkali, and eliminating the interference to a sensor probe due to too fast flow rate of the main pipe as the monitoring point is arranged in a by-pass flow buffer tube.
Description
Technical field
The utility model relates to a kind of automatic chemical dosing device, particularly a kind of pH on-line monitoring frequency conversion dispensing automatic gear.
Background technology
Usually can add various water treatment agents in the water treatment procedure, as inhibiter, Scale inhibitors, flocculation agent etc., and various medicament often must be under suitable pH value the competence exertion the best use of, produce best effect.The accurate control of the pH particularly important that just seems in the water treatment procedure like this.If control water quality pH by manually in structures, adding soda acid in the water treatment procedure, often because the soda acid amount is difficult to accurately make pH control inaccurate, common pH on-line monitoring automatic chemical dosing device on the market, what adopt generally is the running of pH single-point control dosing volume pump, usually there is the leading or super back phenomenon of signal in volume pump like this, and the add-on that makes acid or alkali is on the high side or on the low side, pH is difficult accurately to be controlled and make, the monitoring point often all is installed on the main pipe line in addition, can produce interference to the probe of transmitter because the interior flow velocity of main pipe line is too fast like this makes transmitter produce spurious response, based on this, be necessary on the market common to pH on-line monitoring automatic medicine adding apparatus improve.
Summary of the invention
The purpose of the present utility model is to provide a kind of pH on-line monitoring frequency conversion dispensing automatic gear, the utility model device can accurately be controlled the pH of pending water, make other water treatment agent obtain best effectiveness, realized the variable frequency control of administration system, prevent that effectively the excessive of acid or alkali from adding, and because the monitoring point is installed in the by-pass flow buffer tube, it is too fast and to the interference of sensor probe to have stopped the main pipe line flow velocity.Based on above analysis, the pH on-line monitoring frequency conversion dispensing automatic gear of utilizing this device to finish has the high characteristics of pH control accuracy.
The technical solution of the utility model is:
PH on-line monitoring frequency conversion dispensing automatic gear comprises, decontamination valve 1, feed(raw material)inlet 2, exhaust-valve 3, agitator 4, strainer 5, volume pump 6, PLC housing 7, line mixer 8, buffering sensing chamber 9, pH electrode 10, liquid level sensor 11; Wherein: liquor box be provided with decontamination valve 1 bottom, the top of liquor box is provided with feed(raw material)inlet 2 and exhaust-valve 3; Liquid level sensor 11, agitator 4 all are arranged in the liquor box, and strainer 5 is installed in before volume pump 6 inlet ducts and with liquor box and communicates, and volume pump 6 is connected with PLC housing 7 leads, and agitator 4 is connected with PLC housing 7 leads; Line mixer 8 is arranged in the main pipe line, and buffering sensing chamber 9 links to each other with main pipe line by lateral, and pH electrode 10 is installed in the buffering sensing chamber 9 and by lead and links to each other with PLC housing 7.
Principle of work:
PH on-line monitoring frequency conversion dispensing automatic gear, according to the detection signal of pH transmitter, the variable frequency control volume pump adds acid or alkali in main pipe line, and the pH value that guarantees system water is in needed span of control.
The pH of the water in the preconditioning main pipe line is 9.0, as flow into that its background of water pH is 6.5-7.0 in the main pipe line, about 10% the NaOH solution that then at first adds about 2/3 volume at head tank, open equipment general supply and pH measuring instrument power supply, the control signal that detects for the treatment of to be provided with after the instrument self check is finished pH is 9.0, open motor and volume pump power supply subsequently, instrument is according to the running of sensor signal control volume pump, then the revolution of volume pump is low more near controlling valu more when pH numerical value for volume pump, realized variable frequency control, the signal frequency conversion device that spreads out of according to the pH transmitter is revised the operating parameters of volume pump automatically subsequently, thereby realizes the Automatic Detection and Control of pH in the main pipe line water.PH as water in the pre-control main pipe line is 5.0, and that different is the H of adding about 10% in head tank
2SO
4Solution, the control signal that detects that pH is set is that 5.0 other operations are identical.
Advantage of the present utility model: the pH that can accurately control pending water, make other water treatment agent obtain best effectiveness, realized the variable frequency control of administration system, prevent that effectively the excessive of acid or alkali from adding, and because the monitoring point is installed in the by-pass flow buffer tube, it is too fast and to the interference of sensor probe to have stopped the main pipe line flow velocity.Based on above analysis, the pH on-line monitoring frequency conversion dispensing automatic gear of utilizing this device to finish has the high characteristics of pH control accuracy.
Description of drawings
Accompanying drawing 1 is the utility model structural manufacturing process schematic flow sheet.
Reference numeral: decontamination valve 1, feed(raw material)inlet 2, exhaust-valve 3, agitator 4, strainer 5, volume pump 6, PLC housing 7, line mixer 8, buffering sensing chamber 9, pH electrode 10, liquid level sensor 11.
Embodiment
Claims (1)
1.pH on-line monitoring frequency conversion dispensing automatic gear comprises, decontamination valve (1), feed(raw material)inlet (2), exhaust-valve (3), agitator (4), strainer (5), volume pump (6), PLC housing (7), line mixer (8), buffering sensing chamber (9), pH electrode (10), liquid level sensor (11); It is characterized in that: liquor box be provided with decontamination valve (1) bottom, the top of liquor box is provided with feed(raw material)inlet (2) and exhaust-valve (3); Liquid level sensor (11), agitator (4) all are arranged in the liquor box, strainer (5) is installed in before volume pump (6) inlet duct and with liquor box and communicates, volume pump (6) is connected with PLC housing (7) lead, and agitator (4) is connected with PLC housing (7) lead; Line mixer (8) is arranged in the main pipe line, and buffering sensing chamber (9) links to each other with main pipe line by lateral, and pH electrode (10) is installed in the buffering sensing chamber (9) and by lead and links to each other with PLC housing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201001704U CN201678505U (en) | 2010-01-22 | 2010-01-22 | Automatic device for online pH monitoring and variable-frequency medication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201001704U CN201678505U (en) | 2010-01-22 | 2010-01-22 | Automatic device for online pH monitoring and variable-frequency medication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201678505U true CN201678505U (en) | 2010-12-22 |
Family
ID=43343558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201001704U Expired - Fee Related CN201678505U (en) | 2010-01-22 | 2010-01-22 | Automatic device for online pH monitoring and variable-frequency medication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201678505U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249391A (en) * | 2011-07-20 | 2011-11-23 | 沈阳卡斯特科技发展有限公司 | Anion and cation bed regeneration sewage treatment pH control system |
| CN104591365A (en) * | 2014-10-31 | 2015-05-06 | 浙江海洋学院 | Liquid acidity control instrument and use method thereof |
| CN109095582A (en) * | 2018-08-29 | 2018-12-28 | 深圳市纯水号水处理科技有限公司 | A kind of lime+NaOH intelligence adjusting PH method |
-
2010
- 2010-01-22 CN CN2010201001704U patent/CN201678505U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249391A (en) * | 2011-07-20 | 2011-11-23 | 沈阳卡斯特科技发展有限公司 | Anion and cation bed regeneration sewage treatment pH control system |
| CN102249391B (en) * | 2011-07-20 | 2012-11-07 | 沈阳卡斯特科技发展有限公司 | Anion and cation bed regeneration sewage treatment pH control system |
| CN104591365A (en) * | 2014-10-31 | 2015-05-06 | 浙江海洋学院 | Liquid acidity control instrument and use method thereof |
| CN109095582A (en) * | 2018-08-29 | 2018-12-28 | 深圳市纯水号水处理科技有限公司 | A kind of lime+NaOH intelligence adjusting PH method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20140122 |