CN103480197A - Intelligent detector for working state of filter membrane of fully-automatic filter device for environmental water sample - Google Patents
Intelligent detector for working state of filter membrane of fully-automatic filter device for environmental water sample Download PDFInfo
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- CN103480197A CN103480197A CN201310473494.0A CN201310473494A CN103480197A CN 103480197 A CN103480197 A CN 103480197A CN 201310473494 A CN201310473494 A CN 201310473494A CN 103480197 A CN103480197 A CN 103480197A
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Abstract
The invention discloses an intelligent detector for a working state of a filter membrane of a fully-automatic filter device for an environmental water sample. The intelligent detector comprises a flexible pipe flow detector, a rotor plate and a stator plate, wherein the stator plate and the rotor plate form a variable capacitor, the movement of the rotor plate is converted into a change of the capacitor, and further, the change of the capacitor is detected by a detection circuit of the variable capacitor so that the flow of a water delivery flexible pipe at the rear section can be judged, thus whether the filter membrane is blocked is indirectly judged.
Description
Technical field
The present invention relates to environmental water sample and detect, further relate to the environmental water sample automatic filtering apparatus, specifically environmental water sample automatic filtering apparatus filter membrane duty intelligent detector.
Background technology
The environment waters such as current, China's rivers, lake, coastal waters pollute very serious, have had a strong impact on the people's quality of life, the sustainable development of restriction China economic society.The environment water pollution condition is carried out to Real-Time Monitoring very urgent.
The inorganic salts that nitrate-nitrogen in environment water, nitrite-nitrogen, ammonium nitrogen and phosphate etc. easily are absorbed by plants are commonly referred to nutritive salt.Nutritive salt in environment water is surveyed to monitoring, first will gather the water sample of environment water, then nitrogen and phosphorous nutrient in environmental water sample is measured.Due to the needs of chemical reaction, need, to determined water sample through 0.45 μ m membrane filtration, just can carry out subsequent chemical reaction.Realize the Real-Time Monitoring of water sample, just must realize the automatic fitration to environmental water sample.And China's water pollution is quite serious, contain a large amount of particle quality in water body, filter membrane is easy to blocked, therefore must the duty of filter membrane be detected in real time, and by standard interface, testing result is uploaded to the master controller in master board in time, so that master controller is controlled automatic filtering apparatus each several part workflow in real time, the assurance whole system is worked in order.
Summary of the invention
Needs due to analytical chemistry, the material that whole automatic filtering unit can not affect chemical analysis results with metal etc. contacts, so filter membrane duty intelligent detector is exactly a non-contact high-sensitivity flowmeter in essence, by flow, indirectly judge whether filter membrane stops up.
The purpose of this invention is to provide a kind of environmental water sample automatic filtering apparatus filter membrane duty intelligent detector.
Environmental water sample automatic filtering apparatus filter membrane duty intelligent detector, is characterized in that being comprised of flexible pipe flow detector, moving plate and stator three parts;
Described flexible pipe flow detector comprises flow detector fixed mount and flow detector travelling carriage, the flow detector fixed mount is fixed in shell, the sliding tray can transportation flux detector travelling carriage slided therein is set, and the through hole passed through for flexible pipe of setting and sliding tray square crossing; Flow detector travelling carriage front portion is provided for the through hole that flexible pipe passes through, and rear portion is connected with the moving plate support;
Described moving plate is fixed on the moving plate support, and described stator is fixed on the stator support, and the stator support is fixed on shell, between moving plate support and stator support, spring is set, and moving plate equates that with the quantity of stator the insulating paper isolation is arranged between moving plate and stator.
Wherein, moving plate is two groups, and the sheet number of moving plate is 2 ~ 8 every group, forms two groups of moving plate pole plate groups; The group number of stator and the sheet number of every group of stator are identical with moving plate, form two groups of stator pole plate groups, and the moving plate in the stator in stator pole plate group and moving plate pole plate group interts and settles in twos.
And two groups of moving plate pole plate groups are arranged on the upper and lower symmetric position of moving plate support, moving plate pole plate group and lower moving plate pole plate group in formation, two groups of stator pole plate groups are arranged on the upper and lower symmetric position of stator support, form upper stator pole plate group and the lower stator pole plate group corresponding with moving plate pole plate group.
In the present invention, the number of springs be placed between moving plate support and stator support is 1 ~ 4, and be provided for placing the spring anchorage bracket of spring, length during being shorter in length than spring and ejecting state of spring anchorage bracket, and their the difference distance of sliding while being greater than the work of flow detector travelling carriage.
The rear portion of flow detector travelling carriage is connected in the moving plate mid-stent, and spring is arranged on the position of corresponding flow detector travelling carriage.
Moving plate is positioned on stator, and the insulating paper between moving plate and stator is fixed under moving plate, and moves together with moving plate.Also the insulating paper between moving plate and stator can be fixed on stator.Insulating paper does not just move like this.Certainly, moving plate also can be positioned under stator.
As a complete device, environmental water sample automatic filtering apparatus filter membrane duty intelligent detector of the present invention also must be connected in relevant circuit, just can carry out work.In the present invention, be moving plate and stator to be electrically connected to the testing circuit of variable capacitance.
The flexible pipe flow detector comprises flow detector fixed mount and flow detector travelling carriage, and the through hole passed through for flexible pipe of flow detector fixed mount is circular hole, semicircle or U-shaped breach; The through hole passed through for flexible pipe of flow detector travelling carriage is circular hole, semicircle or U-shaped breach.
Upper and lower moving plate pole plate group is mutually interted and is installed in twos with moving plate and stator in upper and lower stator pole plate group, between each pole plate, by insulating paper, is isolated.Say that from essence upper and lower moving plate pole plate group and upper and lower stator pole plate group are the pole plates of electric capacity, so upper and lower moving plate pole plate group and upper and lower stator pole plate group have just formed the capacitor of a volume-variable
Between moving plate support and stator fixed support, spring is installed, spring promotes the moving plate support, and the moving plate support promotes again the flow detector travelling carriage and slides to flow detector fixed mount direction.
When stopping up due to filter membrane, in the back segment delivery hose during without water sample (or in flexible pipe, hydraulic pressure reduces), under the effect of spring, upper and lower moving plate pole plate group moves to flow detector fixed mount direction, and the relative area between moving plate group and stator group reduces, and capacitance reduces.When filter membrane stops up unimpeded, water sample mobile (in flexible pipe, hydraulic pressure increases) is arranged in the back segment delivery hose, effect down-off detector travelling carriage at hydraulic pressure moves to stator fixed support direction, upper and lower moving plate pole plate group is also moved to stator fixed support direction, thereby the relative area between moving plate group and stator group is increased, and capacitance increases.
So, environmental water sample automatic filtering apparatus filter membrane duty intelligent detector of the present invention, be actually the variation that the movement of flow detector travelling carriage is converted to electric capacity, and then the variation of electric capacity detected by the testing circuit of variable capacitance, just can judge the streamflow of back segment delivery hose, whether stop up thereby indirectly judge filter membrane.
The accompanying drawing explanation
Fig. 1 is filter membrane duty intelligent detector structural representation;
Fig. 2 is that flow detector fixed mount and flow detector travelling carriage coordinate schematic diagram;
Fig. 3 is moving plate support and moving plate pole plate group structural representation;
Fig. 4 is stator support and stator pole plate group structural representation;
Fig. 5 is the testing circuit schematic diagram of capacitance variations;
Fig. 6 is filter membrane duty intelligent detector application installation diagram.
Figure comprises: flexible pipe flow detector 1, flow detector travelling carriage 2, moving plate support 3, upper moving plate pole plate group 4, upper insulating paper group 5, upper stator pole plate group 6, spring anchorage bracket 7, spring is to 8, stator support 9, lower stator pole plate group 10, lower insulating paper group 11, lower moving plate pole plate group 12, shell 13, back segment delivery hose 14, fixing hole 15, flow detector fixed mount 16, sine wave source 20, variable capacitance 21, signal conditioning circuit 22, phase sensitive detection circuit 23, small signal amplifier 24, detecting circuit 25, low-pass filter circuit 26, resistance 27, microcontroller 28, digital signal line 29, CAN bus interface circuit 30, bus connection wire 31, filter membrane duty intelligent detector 41, back segment delivery hose 42, water sample container 43 after filtering, water sample 44 after filtering, top cone 45, filter membrane 46, bottom cone 47, water sample 48 to be filtered, , water sample container 49 to be filtered, leading portion delivery hose 50, peristaltic pump 51, CAN EBI I 52, master board 53, bus connection wire 54, CAN EBI II 55.
The specific embodiment
See Fig. 1.Environmental water sample automatic filtering apparatus filter membrane duty intelligent detector, be comprised of flexible pipe flow detector 1, moving plate (comprising upper moving plate pole plate group 4 and lower moving plate pole plate group 12) and stator (comprising 6 times stator pole plate groups 10 of upper stator pole plate group) three parts;
Described flexible pipe flow detector 1 comprises flow detector fixed mount 16 and flow detector travelling carriage 2, flow detector fixed mount 16 is fixed in shell 13 by access securing member in fixing hole 15, the sliding tray can transportation flux detector travelling carriage 2 slided therein is set, and the through hole passed through for flexible pipe (back segment delivery hose 14) of setting and sliding tray square crossing; Flow detector travelling carriage 2 front portions are provided for the through hole that flexible pipe (back segment delivery hose 14) passes through, and rear portion is connected with moving plate support 3.
Two groups of moving plate pole plate groups are arranged on moving plate support symmetric position (referring to Fig. 3) Shang Xia 3, moving plate pole plate group 4 and lower moving plate pole plate group 12 in formation, two groups of stator pole plate groups are arranged on stator support symmetric position (referring to Fig. 4) Shang Xia 9, form upper stator pole plate group 6 and the lower stator pole plate group 10 corresponding with moving plate pole plate group.In upper moving plate pole plate group 4 and lower moving plate pole plate group 12, the sheet number of moving plate is 4 every group, and in upper stator pole plate group 6 and lower stator pole plate group 10, the sheet number of stator is also 4 every group, and the moving plate in the stator in stator pole plate group and moving plate pole plate group interts and settles in twos.
4 insulating papers in upper insulating paper group 5 are kept apart moving plate and the stator of upper moving plate pole plate group 4 and upper stator pole plate group 6 respectively in twos, and 4 insulating papers of lower insulating paper group 11 are kept apart moving plate and the stator of lower moving plate pole plate group 4 and lower stator pole plate group 6 respectively in twos.
Moving plate is positioned on stator, and the insulating paper between moving plate and stator is fixed under moving plate, and moves together with moving plate.
The rear portion of flow detector travelling carriage 2 is connected in moving plate support 3 middle parts, and spring 8 is arranged on the position of corresponding flow detector travelling carriage 2, and two springs 8 be take flow detector travelling carriage 2 as the mid point arrangement.Could guarantee better flow detector travelling carriage 2 smooth sliding like this.
See Fig. 2.The through hole passed through for flexible pipe of flow detector fixed mount 16, be semicircle, and the through hole passed through for flexible pipe of flow detector travelling carriage 2 is semicircle.
See Fig. 5.Environmental water sample automatic filtering apparatus filter membrane duty intelligent detector of the present invention, its moving plate and stator are electrically connected to the testing circuit of variable capacitance.Moving plate and stator and be clipped between insulating paper, form variable capacitance.
Sine wave source 20 produces the intermediate frequency sinusoidal signal, sinusoidal signal is divided into two-way, it is moving plate and stator that one tunnel is added in by variable capacitance 21() and the input of resistance 27 built-up circuits, another road is added to the reference signal end of phase sensitive detection circuit 23 after signal conditioning circuit 22.Due to the effect of electric capacity, make with the input sinusoidal signal, to be compared with the output sinusoidal signal of resistance 27 built-up circuits by variable capacitance 21, the hysteresis of a phase place is arranged, the variation of variable capacitance 21 electric capacity, must cause the variation of lagging phase.Phase sensitive detection circuit 23 outputs are directly proportional to two input signal phase difference sizes, and phase difference is larger, and the output of phase sensitive detection circuit 23 is larger.The output of phase sensitive detection circuit 23, after small signal amplifier 24, detecting circuit 25 and low-pass filter circuit 26, is delivered to the analog-to-digital conversion pin of microcontroller 28.After signal enters microcontroller 28, at first after signal is adjusted, directly carry out analog-to-digital conversion, data signal after conversion is carried out to computing, with pre-stored related data in microcontroller 28, compare, in judgement back segment aqueduct, the flow of water sample, then, through data signal line 29, CAN bus interface circuit 30 and CAN bus connection wire 31, finally deliver to master controller.So that master controller is controlled automatic filtering apparatus each several part workflow in real time, the assurance whole system is worked in order.
The application of environmental water sample automatic filtering apparatus filter membrane duty intelligent detector of the present invention
See Fig. 6.Filter membrane duty intelligent detector 41 is placed in back segment delivery hose 42, after filter membrane 46.It is middle with bottom cone 47 that filter membrane 46 is clipped in top cone 45.Peristaltic pump 51 is placed in leading portion delivery hose 50, before filter membrane 46.Filter membrane duty intelligent detector 41 arranges CAN EBI II 55, by bus connection wire 54, is connected to CAN EBI I 52, and enters into master board 53.
During work, peristaltic pump 51 rotates, extract water sample 48 to be filtered from water sample container 49 to be filtered, after leading portion delivery hose 50, peristaltic pump 51, bottom cone 47, filter membrane 46, top cone 45, back segment delivery hose 42, filter membrane duty standardization intelligent detector 41 are delivered to filtration in water sample container 43, complete and treat the filtration of filtering water sample 48, obtain filtering rear water sample 44.
If filter membrane 46 stops up, although peristaltic pump 51 rotates, water sample 48 to be filtered can only be delivered to bottom cone 47 places.In top cone 45, back segment delivery hose, 42 flow without water sample, filter membrane duty intelligent detector 41 detects this state, from CAN EBI II 55, through bus connection wire 54, CAN bus I 52, by this status report to the master controller in master board 53, thereby master controller judges whether to need to interrupt filter process, start and change the filter membrane program, realize the automatic replacing of filter membrane.
Claims (9)
1. environmental water sample automatic filtering apparatus filter membrane duty intelligent detector, is characterized in that being comprised of flexible pipe flow detector, moving plate and stator three parts;
Described flexible pipe flow detector comprises flow detector fixed mount and flow detector travelling carriage, the flow detector fixed mount is fixed in shell, the sliding tray can transportation flux detector travelling carriage slided therein is set, and the through hole passed through for flexible pipe of setting and sliding tray square crossing; Flow detector travelling carriage front portion is provided for the through hole that flexible pipe passes through, and rear portion is connected with the moving plate support;
Described moving plate is fixed on the moving plate support, and described stator is fixed on the stator support, and the stator support is fixed on shell, between moving plate support and stator support, spring is set, and moving plate equates that with the quantity of stator the insulating paper isolation is arranged between moving plate and stator.
2. according to the detector of claim 1, it is characterized in that: moving plate is two groups, and the sheet number of moving plate is 2 ~ 8 every group, forms two groups of moving plate pole plate groups; The group number of stator and the sheet number of every group of stator are identical with moving plate, form two groups of stator pole plate groups, and the moving plate in the stator in stator pole plate group and moving plate pole plate group interts and settles in twos.
3. according to the detector of claim 2, it is characterized in that: two groups of moving plate pole plate groups are arranged on the upper and lower symmetric position of moving plate support, moving plate pole plate group and lower moving plate pole plate group in formation, two groups of stator pole plate groups are arranged on the upper and lower symmetric position of stator support, form upper stator pole plate group and the lower stator pole plate group corresponding with moving plate pole plate group.
4. according to the detector of claim 1, it is characterized in that: number of springs is 1 ~ 4, and be provided for placing the spring anchorage bracket of spring, length during being shorter in length than spring and ejecting state of spring anchorage bracket, and their the difference distance of sliding while being greater than the work of flow detector travelling carriage.
5. according to the detector of claim 1, it is characterized in that: the rear portion of flow detector travelling carriage is connected in the moving plate mid-stent, and spring is arranged on the position of corresponding flow detector travelling carriage.
6. according to the detector of claim 1, it is characterized in that: moving plate is positioned on stator, and the insulating paper between moving plate and stator is fixed under moving plate, and moves together with moving plate.
7. according to the detector of claim 1, it is characterized in that: moving plate is positioned on stator, and the insulating paper between moving plate and stator is fixed on stator.
8. according to the detector of claim 1, it is characterized in that: the through hole passed through for flexible pipe of flow detector fixed mount is circular hole, semicircle or U-shaped breach;
The through hole passed through for flexible pipe of flow detector travelling carriage is circular hole, semicircle or U-shaped breach.
9. according to the detector of claim 1, it is characterized in that: moving plate and stator are electrically connected to the testing circuit of variable capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310473494.0A CN103480197B (en) | 2013-10-12 | 2013-10-12 | Intelligent detector for working state of filter membrane of fully-automatic filter device for environmental water sample |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310473494.0A CN103480197B (en) | 2013-10-12 | 2013-10-12 | Intelligent detector for working state of filter membrane of fully-automatic filter device for environmental water sample |
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| Publication Number | Publication Date |
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| CN103480197A true CN103480197A (en) | 2014-01-01 |
| CN103480197B CN103480197B (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310473494.0A Expired - Fee Related CN103480197B (en) | 2013-10-12 | 2013-10-12 | Intelligent detector for working state of filter membrane of fully-automatic filter device for environmental water sample |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63305907A (en) * | 1987-06-08 | 1988-12-13 | Toshiba Corp | Monitor for clogging of filter medium of filter |
| DE3820878A1 (en) * | 1988-06-21 | 1989-12-28 | Wolfgang Dipl Phys Scholl | Capacitive sensor element for the construction of mechanical-electrical transducers |
| JPH10113651A (en) * | 1996-10-07 | 1998-05-06 | Minoru Ind Co Ltd | Household water purifying device |
| CN1869599A (en) * | 2005-05-27 | 2006-11-29 | 上海自动化仪表股份有限公司 | Multi-parameter sensor for measuring differential pressure/pressure/temp |
| CN2903925Y (en) * | 2006-04-21 | 2007-05-23 | 山东正浩给水设备科技有限公司 | Flow detector |
| US20090206015A1 (en) * | 2008-02-18 | 2009-08-20 | Yu-Chin Wang | Flow indicator for showing blocking of filter cotton |
| CN101623572A (en) * | 2006-04-12 | 2010-01-13 | 米利波尔有限公司 | Filter with memory, communication and pressure sensor |
| CN201768433U (en) * | 2010-07-20 | 2011-03-23 | 上海复济生物科技有限公司 | Water purifier filter element monitoring device |
| CN103063236A (en) * | 2011-10-19 | 2013-04-24 | 常州三恒电器有限公司 | Capacitive sensor |
-
2013
- 2013-10-12 CN CN201310473494.0A patent/CN103480197B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63305907A (en) * | 1987-06-08 | 1988-12-13 | Toshiba Corp | Monitor for clogging of filter medium of filter |
| DE3820878A1 (en) * | 1988-06-21 | 1989-12-28 | Wolfgang Dipl Phys Scholl | Capacitive sensor element for the construction of mechanical-electrical transducers |
| JPH10113651A (en) * | 1996-10-07 | 1998-05-06 | Minoru Ind Co Ltd | Household water purifying device |
| CN1869599A (en) * | 2005-05-27 | 2006-11-29 | 上海自动化仪表股份有限公司 | Multi-parameter sensor for measuring differential pressure/pressure/temp |
| CN101623572A (en) * | 2006-04-12 | 2010-01-13 | 米利波尔有限公司 | Filter with memory, communication and pressure sensor |
| CN2903925Y (en) * | 2006-04-21 | 2007-05-23 | 山东正浩给水设备科技有限公司 | Flow detector |
| US20090206015A1 (en) * | 2008-02-18 | 2009-08-20 | Yu-Chin Wang | Flow indicator for showing blocking of filter cotton |
| CN201768433U (en) * | 2010-07-20 | 2011-03-23 | 上海复济生物科技有限公司 | Water purifier filter element monitoring device |
| CN103063236A (en) * | 2011-10-19 | 2013-04-24 | 常州三恒电器有限公司 | Capacitive sensor |
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Granted publication date: 20150304 Termination date: 20161012 |