CN203112567U - Automatic control device for pH value of desulfurization waste water - Google Patents
Automatic control device for pH value of desulfurization waste water Download PDFInfo
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- CN203112567U CN203112567U CN 201320128084 CN201320128084U CN203112567U CN 203112567 U CN203112567 U CN 203112567U CN 201320128084 CN201320128084 CN 201320128084 CN 201320128084 U CN201320128084 U CN 201320128084U CN 203112567 U CN203112567 U CN 203112567U
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Abstract
The utility model discloses an automatic control device for a pH value of desulfurization waste water. The automatic control device comprises a dosing tank (1), a dosing pump (3) and a motor (4) thereof, wherein an outlet of the dosing pump (3) is connected with a waste water tank (8); an automatic detection sensor (7) for a first flow and the pH value is arranged in an inlet of the waste water tank (8); an automatic detection sensor (9) for a second flow and the pH value is arranged in an outlet of the waste water tank (8); and the automatic detection sensor (7) for the first flow and the pH value and the automatic detection sensor (9) for the second flow and the pH value are electrically connected with a control cabinet (6); the control cabinet (6) is electrically connected with a variable-frequency governor (5); and the variable-frequency governor (5) is electrically connected with the motor (4). The utility model provides the automatic control device for the pH value of the desulfurization waste water, which is stable in operation, high in dosing accuracy, and low in labor intensity, can furthest eliminate the influence of signal lag factors so as to enable the operation to be stable.
Description
Technical field
The utility model relates to a kind of automatic medicine adding apparatus, particularly relates to a kind of desulfurization wastewater pH value automatic control device.
Background technology
At present, in the desulfurization wastewater treatment system, need carry out in the having of on-line Control and case and two links of water tank to the pH value, the control technology of the two is as follows respectively:
In and in the case, the pH value of waste water is regulated by adding milk of lime, the milk of lime dosing pump is controlled by the online pH table in the sludge box.When pH＜9, can regulate by frequency transformer and strengthen milk of lime and add dose; As pH〉9 the time, can reduce milk of lime and add dose pH is maintained about 9.2.
In water tank, the pH value of waste water is regulated by adding HCl, and the HCl volume pump is subjected to the online pH table control in the water tank.As pH〉9 the time, start the HCl volume pump and add acid and regulate; When pH＜6, open out water pump circulation electric valve water outlet is returned in and the case circulation; When pH in the 6.0-9.0 scope, then directly the discharging.
In above-described and case and water tank control technology, though simple, practicality, easy to operate, all exist signal lag, dosing precision low, move jiggly problem.
Summary of the invention
Technical problem to be solved in the utility model provides and a kind ofly operates steadily, dosing precision height, desulfurization wastewater pH value automatic control device that labour intensity is low.
In order to solve the problems of the technologies described above, a kind of desulfurization wastewater pH value automatic control device that the utility model provides, comprise grug feeding jar, dosing pump and motor thereof, described dosing pump outlet is connected with waste water tank, in the entrance of waste water tank, be provided with first flow, the automatic detecting sensor of pH value, in the outlet of waste water tank, be provided with second flow, the automatic detecting sensor of pH value, described first flow, the automatic detecting sensor of pH value and second flow, the automatic detecting sensor of pH value is electrically connected with housing, described housing is electrically connected with variable-frequence governor, and described variable-frequence governor is electrically connected with described motor.
Adopt the desulfurization wastewater pH value automatic control device of technique scheme, first flow, detected flux values and pH value are transferred to housing in the entrance of the automatic detecting sensor of pH value with waste water tank, second flow, detected flux values and pH value are transferred to housing in the outlet of the automatic detecting sensor of pH value with waste water tank, housing compares calculating with detected flux values and pH value with the control set(ting)value, after the process intelligent PID is adjusted, again control signal is transferred to variable-frequence governor, is controlled the dose that adds of dosing pump by variable-frequence governor control rotating speed of motor.Do not need manual operation, supervision and control after adopting the utility model, improved the control accuracy that adds dose, eliminated the influence of signal lag factor simultaneously to greatest extent yet, make operation more steady.
In sum, the utility model be a kind ofly operate steadily, dosing precision height, desulfurization wastewater pH value automatic control device that labour intensity is low, the influence of erasure signal lag factor to greatest extent makes and operates steadily.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is Automatic Dosing control block diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1 and Fig. 2, grug feeding jar 1 outlet connects the entrance of dosing pump 3 by control valve 2, the outlet of dosing pump 3 is connected with waste water tank 8, dosing pump 3 is driven by motor 4, in the entrance of waste water tank 8, be provided with first flow, the automatic detecting sensor 7 of pH value, in the outlet of waste water tank 8, be provided with second flow, the automatic detecting sensor 9 of pH value, first flow, the automatic detecting sensor 7 of pH value and second flow, the automatic detecting sensor 9 of pH value are electrically connected with housing 6, housing 6 is electrically connected with variable-frequence governor 5, and variable-frequence governor 5 is electrically connected with motor 4.
Referring to Fig. 1 and Fig. 2, detected flux values and pH value are transferred to housing 6 in first flow, the entrance of the automatic detecting sensor 7 of pH value with waste water tank 8, detected flux values and pH value are transferred to housing 6 in second flow, the outlet of the automatic detecting sensor 9 of pH value with waste water tank 8, housing 6 compares calculating with detected flux values and pH value with the control set(ting)value, after the process intelligent PID is adjusted, again control signal is transferred to variable-frequence governor 5, is controlled the dose that adds of dosing pump 3 by the rotating speed of variable-frequence governor 5 control motors 4.Do not need manual operation, supervision and control after adopting the utility model, improved the control accuracy that adds dose, eliminated the influence of signal lag factor simultaneously to greatest extent yet, make operation more steady.
Major function of the present utility model: flux values and pH value detect automatically.The key technical indexes: in and case to go out saliva pH be 9.0-9.5, it is 6.0-9.0 that water tank goes out saliva pH.Working conditions: voltage of supply 380V ± 10%(three-phase); Supply frequency 50 ± 0.5HZ; Temperature 0-40 ℃; Relative humidity＜90%.
Technological line of the present utility model:
Adopt wastewater flow, two parameters of pH value that the desulfurization wastewater medicine system is regulated and control, the method that the employing alternating frequency conversion technique combines with Computer Control Technology, the influence of erasure signal lag factor operates steadily, reliably medicine system.
Concrete implementation step is as follows:
1, according to the mathematical model of the variation of the flow of desulfurization wastewater and pH value, provides the automatic master mode of dosing.
2, according to adding the concentration of being used as medicine, the variation correlationship of administration timing of drug and pH value is adjusted the control parameter, makes the operation of dosing automatic steady, does not fluctuate widely because of signal lag.
3, establish an automatic housing 6 of control dosing on dosing pump 3 sides, variable-frequence governor 5 is housed, automatic control unit and relevant power, signal circuit and control device in the housing 6.
4, check, proofread and correct or install additional flow, the pH value table at waste water tank 8 entrance and exit places.
5, first flow, the automatic detecting sensor 7 of pH value and second flow, automatic detecting sensor 9 output signals of pH value (4-20mA) are received between dosing, linked to each other with housing 6 electricity.
6, the power supply with the motor 4 of dosing pump 3 is electrically connected with variable-frequence governor 5.
7, the debugging of automatic medicament feeding system and trial run are done further to adjust to the control parameter, make system stable operation.
8, detected flux values and pH value are transferred to housing 6 in first flow, the entrance of the automatic detecting sensor 7 of pH value with waste water tank 8, detected flux values and pH value are transferred to housing 6 in second flow, the outlet of the automatic detecting sensor 9 of pH value with waste water tank 8, housing 6 compares calculating with detected flux values and pH value with the control set(ting)value, after the process intelligent PID is adjusted, again control signal is transferred to variable-frequence governor 5, is controlled the dose that adds of dosing pump 3 by the rotating speed of variable-frequence governor 5 control motors 4.
Claims (1)
1. desulfurization wastewater pH value automatic control device, comprise grug feeding jar (1), dosing pump (3) and motor (4) thereof, the outlet of described dosing pump (3) is connected with waste water tank (8), it is characterized in that: in the entrance of waste water tank (8), be provided with first flow, the automatic detecting sensor of pH value (7), in the outlet of waste water tank (8), be provided with second flow, the automatic detecting sensor of pH value (9), described first flow, the automatic detecting sensor of pH value (7) and second flow, the automatic detecting sensor of pH value (9) is electrically connected with housing (6), described housing (6) is electrically connected with variable-frequence governor (5), and described variable-frequence governor (5) is electrically connected with described motor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320128084 CN203112567U (en) | 2013-03-20 | 2013-03-20 | Automatic control device for pH value of desulfurization waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320128084 CN203112567U (en) | 2013-03-20 | 2013-03-20 | Automatic control device for pH value of desulfurization waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203112567U true CN203112567U (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320128084 Expired - Fee Related CN203112567U (en) | 2013-03-20 | 2013-03-20 | Automatic control device for pH value of desulfurization waste water |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103455055A (en) * | 2013-08-29 | 2013-12-18 | 施勒智能建筑系统（上海）有限公司 | Method for adjusting pH value through multipoint detection fuzzy PID control in raw water treatment |
| CN105756621A (en) * | 2014-12-18 | 2016-07-13 | 中国石油天然气股份有限公司 | Pipeline back pressure control device, system and method |
| CN108594750A (en) * | 2018-05-21 | 2018-09-28 | 江苏大学 | A kind of sewage disposal on-line intelligence control system and control method |
| CN112919606A (en) * | 2020-12-25 | 2021-06-08 | 广东家美陶瓷有限公司 | Ceramic granite tower circulating water treatment system, circuit and pH value control method |
| CN113354051A (en) * | 2021-04-27 | 2021-09-07 | 华能国际电力股份有限公司营口电厂 | Automatic dosing control method and system for wet desulphurization wastewater treatment |
-
2013
- 2013-03-20 CN CN 201320128084 patent/CN203112567U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103455055A (en) * | 2013-08-29 | 2013-12-18 | 施勒智能建筑系统（上海）有限公司 | Method for adjusting pH value through multipoint detection fuzzy PID control in raw water treatment |
| CN105756621A (en) * | 2014-12-18 | 2016-07-13 | 中国石油天然气股份有限公司 | Pipeline back pressure control device, system and method |
| CN105756621B (en) * | 2014-12-18 | 2018-09-04 | 中国石油天然气股份有限公司 | Pipeline back pressure control device, system and method |
| CN108594750A (en) * | 2018-05-21 | 2018-09-28 | 江苏大学 | A kind of sewage disposal on-line intelligence control system and control method |
| CN112919606A (en) * | 2020-12-25 | 2021-06-08 | 广东家美陶瓷有限公司 | Ceramic granite tower circulating water treatment system, circuit and pH value control method |
| CN113354051A (en) * | 2021-04-27 | 2021-09-07 | 华能国际电力股份有限公司营口电厂 | Automatic dosing control method and system for wet desulphurization wastewater treatment |
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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: 20130807 Termination date: 20140320 |