CN203838571U - Dissolved air flotation and filtration tank liquid level automatic control system - Google Patents
Dissolved air flotation and filtration tank liquid level automatic control system Download PDFInfo
- Publication number
- CN203838571U CN203838571U CN201420241723.6U CN201420241723U CN203838571U CN 203838571 U CN203838571 U CN 203838571U CN 201420241723 U CN201420241723 U CN 201420241723U CN 203838571 U CN203838571 U CN 203838571U
- Authority
- CN
- China
- Prior art keywords
- liquid level
- air flotation
- filtration tank
- dissolved air
- plc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Physical Water Treatments (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
The utility model relates to the wastewater treatment water tank control technical field, in particular relates to a dissolved air flotation and filtration tank liquid level automatic control system. The dissolved air flotation and filtration tank liquid level automatic control system is characterized in that an ultrasonic liquid level meter and a back-flushing trolley are arranged above a dissolved air flotation and filtration tank; a water outgoing pipe of the dissolved air flotation and filtration tank is provided with a water outgoing adjustment valve; the water outgoing adjustment valve and the ultrasonic level meter are connected with a PLC used for receiving data and transmitting control signals, and an analog quantity expansion module; the analog quantity expansion module is connected with the PLC through a special connection line; and the back-flushing trolley is connected with the PLC through a control line. According to the dissolved air flotation and filtration tank liquid level automatic control system, a programmed PID regulator inside the PLC is adopted, so that parameter correction can be performed based on operation states of the dissolved air flotation and filtration tank; liquid level control can be performed when the dissolved air flotation and filtration tank operates normally; and when back-flushing is performed on the air flotation and filtration tank, back-flushing signals are acquired, and a feedforward signal is led to the PID regulator, and the opening degree of the valve is adjusted in advance, so that liquid level does not fall in the recoil process, and smooth slagging of the tank body can be ensured, and a back-flushing effect can be guaranteed.
Description
Technical field
The utility model relates to control technology field, wastewater treatment pond, especially relates to a kind of Airfloat filtering pond automatic Control Systems of Liquids Height.
Background technology
In engineering of water treatment, Airfloat filtering pond will be got rid of the scum silica frost of generation in process of production in time, to prevent that scum silica frost from sinking to reducing the water quality of water outlet and polluting filtrate.The prerequisite of deslagging is that the water level that will ensure Chi Shui maintains in a normal scope smoothly, and the scraper plate that makes to remove the gred can normally be worked.Therefore must strictly control pool inner water position.The turnover valve opening that adopts manual control pond in the prior art, to keep water level in water pool to change within allowed band.But because sump area is large, affect comparatively complicated (particularly in the time of the backwash technique) of factor that inflow changes, cause the variation of filter tank water level larger, therefore manual control valve opening has suitable difficulty, and the variation of water level changes and has very long retardation time compared with valve opening, add the simple duplication of labour, easily cause operating personnel's fatigue and be sick of.So manual control is waste of manpower not only, can not ensure to control water level in the scope of technological requirement.Also useful float water-level control apparatus control electrically operated valve opens and closes in the prior art, realizes pond water water level control.But because of the sensitivity of float control device poor, movement response is slower, make the control accuracy of this technical scheme be difficult to ensure, on the other hand, due to motorized valve high point with the door open, not only can cause water level variation by a relatively large margin, also can frequently turn round because of motor-operating mechanism, acceleration equipment aging, further reduces the reliability of device.
Summary of the invention
The purpose of this utility model is to avoid the deficiencies in the prior art that a kind of Airfloat filtering pond automatic Control Systems of Liquids Height is provided, thereby effectively solves the problem of prior art.
For achieving the above object, the technical scheme that the utility model is taked is: described a kind of Airfloat filtering pond automatic Control Systems of Liquids Height, be characterized in comprising the ultrasonic level gage and the recoil car that are arranged on Airfloat filtering pond top, on the rising pipe of Airfloat filtering pond, be also provided with out water regulating valve, go out water regulating valve and ultrasonic level gage and send the PLC controller of control signal and analog quantity spread module to be connected for receiving Data Concurrent, analog quantity spread module is connected with PLC controller by Special-purpose connecting line, and described recoil car is connected with PLC controller by control line.
Described PLC controller adopts the PID regulator of PLC inside programming, analog quantity spread module is that element is sent in regulator signal collection and the instruction of PID, its input signal is the instruction of flotation tank liquid level and feedback, output order is control valve opening, when the work of PLC controller control recoil car, PID regulator in PLC can be introduced a feed-forward signal, in advance control valve.
Described ultrasonic level gage is connected with LT-with the liquid level feedback control port LT+ of analog quantity spread module, and the described water regulating valve that goes out is connected with aperture command port MO+, MO-with open degree feedback port MI+, the MI-of analog quantity spread module respectively.
The beneficial effects of the utility model are: described a kind of Airfloat filtering pond automatic Control Systems of Liquids Height, it is by adopting the PID regulator of PLC inside programming, can carry out parameter correction in conjunction with flotation tank operating condition, in the time that normally moving, flotation tank carries out liquid level control, in the time that flotation tank recoils, gather recoil signal, on PID regulator, introduce a feed-forward signal, controlling opening of valve in advance, liquid level can not be declined in back flushing process, while guaranteeing to recoil, pond body deslagging is smooth and easy, has ensured repercussion effect.
Brief description of the drawings
Fig. 1 is structural principle schematic diagram of the present utility model.
In figure: 1.PLC controller; 2. analog quantity control module; 3. recoil car; 4. ultrasonic level gage; 5. go out water regulating valve; 6. Airfloat filtering pond.
Embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, described a kind of Airfloat filtering pond automatic Control Systems of Liquids Height, be characterized in comprising the ultrasonic level gage 4 and the recoil car 3 that are arranged on Airfloat filtering pond 6 tops, on the rising pipe of Airfloat filtering pond 6, be also provided with out water regulating valve 5, go out water regulating valve 5 and ultrasonic level gage 4 and send the PLC controller 1 of control signal and analog quantity spread module 2 to be connected for receiving Data Concurrent, analog quantity spread module 2 is connected with PLC controller 1 by Special-purpose connecting line, and described recoil car 3 is connected with PLC controller 1 by control line.
Described PLC controller 1 adopts the PID regulator of PLC inside programming, analog quantity spread module 2 is that element is sent in regulator signal collection and the instruction of PID, its input signal is the instruction of flotation tank liquid level and feedback, output order is control valve opening, when PLC controller 1 is controlled the work of recoil car 3, PID regulator in PLC can be introduced a feed-forward signal, in advance control valve.
Described ultrasonic level gage 4 is connected with LT-with the liquid level feedback control port LT+ of analog quantity spread module 2, and the described water regulating valve 5 that goes out is connected with aperture command port MO+, MO-with open degree feedback port MI+, the MI-of analog quantity spread module 2 respectively.
What described PLC controller and analog quantity spread module adopted is Siemens S7-200 controller and analog quantity spread module, situation about moving for the recoil of recoil car, pass through test of many times, summing up recoil water consumption affects the mathematics corresponding relation of liquid level, controller is in the time receiving recoil run signal, by programming Control regulator controlling opening of valve before liquid level changes, control in time flotation tank liquid level.
Described a kind of Airfloat filtering pond automatic Control Systems of Liquids Height, detailed process is, when flotation tank liquid level declines, LT reduces, and signal is transferred to PLC, outputs to PID regulator+end by parameter conversion, PID output is reduced, valve opening command M O reduces, thereby flotation tank water outlet reduces, and liquid level increases.When flotation tank liquid level rises, LT increases, and outputs to PID regulator+end by parameter conversion, and PID output is increased, and valve opening command M O increases, thereby flotation tank water outlet increases, and liquid level reduces.In the time that flotation tank recoils, send recoil enabling signal to PLC, be programmed in a feed-forward signal of introducing on PID regulator+end, the ratio of feed-forward signal size and backwashing strength and water production rate, is generally the 5%-10% of aperture, and there is different numerical value in different filter tanks, make like this water outlet control valve reduce in advance aperture, the liquid level of offsetting in the time of recoil depletion clear water reduces, and the water yield reducing while recoil like this can not affect liquid level has too large variation, the deslagging effect while guaranteeing to recoil.
Ultrasonic level gage is installed on flotation tank, flotation tank rising pipe is installed intelligent regulating valve, adopt small PLC controller, form a control system, system by gather flotation tank liquid level, gather water outlet electric control valve valve position in PLC, by the programming in controller, analyze each data, export suitable valve position instruction, control out the aperture of water regulating valve in time, reach and stablize flotation tank liquid level and make in the scope of 100mm below effluent weir a reliable scope.
In practical implementation, while dropping into automatic control of liquid, within the scope of can be stabilized in ± 60mm of flotation tank liquid level, especially, in back flushing process, can stablize preferably liquid level, if do not drop into automatic control of liquid level, liquid level variation when recoil can exceed 400mm.Therefore, it is little that this tank level control system can guarantee that Airfloat filtering pond liquid level in water processed and back flushing process changes, while guaranteeing to recoil flotation tank level stability under effluent weir-100mm in, make pond body row scum silica frost smooth and easy, ensure repercussion effect, thereby improved the operational effect of flotation tank.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. an Airfloat filtering pond automatic Control Systems of Liquids Height, it is characterized in that comprising the ultrasonic level gage and the recoil car that are arranged on Airfloat filtering pond top, on the rising pipe of Airfloat filtering pond, be also provided with out water regulating valve, go out water regulating valve and ultrasonic level gage and send the PLC controller of control signal and analog quantity spread module to be connected for receiving Data Concurrent, analog quantity spread module is connected with PLC controller by Special-purpose connecting line, and described recoil car is connected with PLC controller by control line.
2. a kind of Airfloat filtering pond automatic Control Systems of Liquids Height according to claim 1, it is characterized in that: described PLC controller adopts the PID regulator of PLC inside programming, analog quantity spread module is that element is sent in regulator signal collection and the instruction of PID, its input signal is the instruction of flotation tank liquid level and feedback, output order is control valve opening, when the work of PLC controller control recoil car, the PID regulator in PLC can be introduced a feed-forward signal, in advance control valve.
3. a kind of Airfloat filtering pond automatic Control Systems of Liquids Height according to claim 1, it is characterized in that: described ultrasonic level gage is connected with LT-with the liquid level feedback control port LT+ of analog quantity spread module, the described water regulating valve that goes out is connected with aperture command port MO+, MO-with open degree feedback port MI+, the MI-of analog quantity spread module respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420241723.6U CN203838571U (en) | 2014-05-11 | 2014-05-11 | Dissolved air flotation and filtration tank liquid level automatic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420241723.6U CN203838571U (en) | 2014-05-11 | 2014-05-11 | Dissolved air flotation and filtration tank liquid level automatic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203838571U true CN203838571U (en) | 2014-09-17 |
Family
ID=51516388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420241723.6U Expired - Fee Related CN203838571U (en) | 2014-05-11 | 2014-05-11 | Dissolved air flotation and filtration tank liquid level automatic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203838571U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103984367A (en) * | 2014-05-11 | 2014-08-13 | 甘肃金桥给水排水设计与工程(集团)有限公司 | Automatic air flotation filtering tank liquid level control system |
| CN110586005A (en) * | 2019-10-14 | 2019-12-20 | 绍兴升阳水处理剂有限公司 | Accurate feeder apparatus of throwing of reactant |
-
2014
- 2014-05-11 CN CN201420241723.6U patent/CN203838571U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103984367A (en) * | 2014-05-11 | 2014-08-13 | 甘肃金桥给水排水设计与工程(集团)有限公司 | Automatic air flotation filtering tank liquid level control system |
| CN110586005A (en) * | 2019-10-14 | 2019-12-20 | 绍兴升阳水处理剂有限公司 | Accurate feeder apparatus of throwing of reactant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111320272B (en) | Operation method of automatic backwashing device of multi-condition controlled denitrification biological filter | |
| CN103641236A (en) | Intelligent aeration system with dissolved oxygen meter | |
| CN204737853U (en) | Riverway sewage centralized processing system | |
| CN204324979U (en) | A kind of constant water level Controlling System of rearmounted denitrogenation biological filter | |
| CN203838571U (en) | Dissolved air flotation and filtration tank liquid level automatic control system | |
| CN103964604B (en) | A kind of water treatment system | |
| WO2012136561A1 (en) | Water treatment plant | |
| CN100363082C (en) | Automatic backwash control method for tap water factory V shape filtering pool | |
| CN207827991U (en) | A kind of Intelligent purifying water system | |
| CN202080973U (en) | Device for preparing electronic grade ultrapure water | |
| CN103984367A (en) | Automatic air flotation filtering tank liquid level control system | |
| CN205999072U (en) | A kind of double anti-water cleaning systems of constant pressure water tank | |
| CN210261361U (en) | Real platform of instructing of complete set of processing system of feedwater | |
| CN104140172A (en) | Seawater desalination pretreatment method | |
| CN204039077U (en) | A kind of purified water manufactures device | |
| CN202924767U (en) | Automatic water intake device of sewage treatment tank | |
| CN205061736U (en) | Full -automatic integrated villages and small towns drinking water device | |
| CN109368838A (en) | Microfiltration systems water treatment technology | |
| CN212609810U (en) | Multi-condition controlled automatic back-flushing device for denitrification biological filter | |
| CN210583979U (en) | Full-automatic water quality filter | |
| CN204996216U (en) | But automatic back flush filter equipment of programming control | |
| CN203715426U (en) | Effluent sampling feedback control system | |
| CN208200491U (en) | A kind of biofilter | |
| CN202038881U (en) | Novel industrial sewage treatment automatic control device | |
| CN210150834U (en) | Water treatment regeneration filtration control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| C56 | Change in the name or address of the patentee |
Owner name: GANSU GOLDEN BRIGE WATER TECHNOLOGY (GROUP) CO., L Free format text: FORMER NAME: GANSU JINQIAO WATER TREATMENT TECHNOLOGY ENGINEERING LTD. |
|
| CB03 | Change of inventor or designer information |
Inventor after: Wang Gang Inventor after: Zhou Zhenwei Inventor after: Jia Bailin Inventor after: Yan Peiquan Inventor before: Wang Gang Inventor before: Liu Lin Inventor before: Zhao Kai |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG GANG LIU LIN ZHAO KAI TO: WANG GANG ZHOU ZHENWEI JIA BOLIN YAN PEIQUAN |
|
| CP03 | Change of name, title or address |
Address after: 730030, 6 floor, Xin Sheng building, 279 Jiuquan Road, Chengguan District, Gansu, Lanzhou Patentee after: Gansu Jinqiao water science and Technology (Group) Limited by Share Ltd Address before: 730030, Lanzhou Central Plaza, Gansu, 6 floor Patentee before: Gansu Jinqiao Water Treatment Technique Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 730030, 6 floor, Xin Sheng building, 279 Jiuquan Road, Chengguan District, Gansu, Lanzhou Patentee after: Gansu Jinqiao water technology (Group) Co., Ltd. Address before: 730030, 6 floor, Xin Sheng building, 279 Jiuquan Road, Chengguan District, Gansu, Lanzhou Patentee before: Gansu Jinqiao water science and Technology (Group) Limited by Share Ltd |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20200511 |