CN204165816U - A kind of Water Automatic Monitoring System water sample filters pretreating device - Google Patents
A kind of Water Automatic Monitoring System water sample filters pretreating device Download PDFInfo
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- CN204165816U CN204165816U CN201420662557.7U CN201420662557U CN204165816U CN 204165816 U CN204165816 U CN 204165816U CN 201420662557 U CN201420662557 U CN 201420662557U CN 204165816 U CN204165816 U CN 204165816U
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Abstract
The utility model discloses a kind of Water Automatic Monitoring System water sample filter pretreating device, comprise raw water tubes, described raw water tubes successively after filtration bellows be connected with filter pipe with trap; Filter pipe is connected with water filter cup upper end, and the pipeline connecting filter pipe and water filter cup is parallel with logical empty valve; The upper end of water filter cup is also connected with vacuum pump, and the lower end of water filter cup connects to on-line monitoring analytical instrument through water pump, is also communicated with bleed valve in the lower end of water filter cup; Described trap, logical empty valve, bleed valve, vacuum pump and water pump are all electrically connected with controller.This pretreating device can realize the front filtration treatment of water sample monitoring automatically, has rational in infrastructure, feature easy for operation, is widely used in the automatic monitoring of water quality.
Description
Technical field
The utility model relates to water sample monitoring technical field, particularly a kind of water sample treating apparatus for Water Automatic Monitoring System.
Background technology
It is the focus of current environmental monitoring that surface water is monitored automatically, represents the developing direction of environmental monitoring.Along with domestic surface water heavy metal pollution Frequent Accidents, in surface water, heavy metal on-line monitoring is more and more paid attention to, but because of domestic heavy metal on-line monitoring starting relatively evening, is still in the starting stage at present.
At present, atomic absorption spectrophotometry (AAS), inductively coupled plasma-mass spectroscopy (ICP-MS), inductively coupled plasma-emission spectrometry (ICP-AES), atomic fluorescence spectrum (CAFS), chemical colorimetry and electrochemical analysis method etc. are mainly contained to the laboratory detection technology of heavy metal analysis in surface water.In surface water, heavy metal on-line analysis technology mainly contains colourimetry and Anodic stripping, most widely used with Anodic stripping again.
In surface water body, heavy metal monitoring is divided into mensuration soluble content, insolubility (suspended state) content and total metal content etc.Soluble content is the concentration measured after being filtered by 0.45 micron membrane filter by sample.In heavy metal index in " water environment quality standard " GB3838-2002, except selenium, arsenic, sclera remodeling be except total amount, what other metal projects measured is all soluble state content, should take first to filter through 0.45 micron membrane filter, then uses the mode of the preservation post analysis of nitric acid acidifying.
Current domestic Water Automatic Monitoring System heavy metal on-line monitoring instrument is not all equipped with 0.45 micron membrane filter water sample on-line filtration device, solubility and insolubility content of beary metal is included in water sample, and in " water environment quality standard " GB3838-2002, except selenium, arsenic, sclera remodeling be except total amount, all the other content of beary metal refer to soluble content, therefore first not there is not following problem through 0.45 micron membrane filter filtration post analysis in water sample: (1) automatically method for monitoring and analyzing does not meet standard-required, causes automatic monitoring data cannot compare with environmental quality standards; (2) automatic monitoring data and " sampling-lab analysis " Monitoring Data differ greatly, particularly when suspended state metal concentration is relatively high, the two difference is larger, even occurs that automatic monitoring data exceeds standard but " sampling-lab analysis " data situation about not exceeding standard.Make heavy metal monitor can not play monitoring and warning effect exactly, lose Practical significance.
Utility model content
For the above-mentioned deficiency existing for prior art, technical problem to be solved in the utility model is to provide a kind of Water Automatic Monitoring System water sample that can realize automatically carrying out before water sample is monitored drainage process and filters pretreating device.
In order to solve the problems of the technologies described above, Water Automatic Monitoring System water sample of the present utility model filters pretreating device, comprises raw water tubes, described raw water tubes successively after filtration bellows be connected with filter pipe with trap; Filter pipe is connected with water filter cup upper end, and the pipeline connecting filter pipe and water filter cup is parallel with logical empty valve; The upper end of water filter cup is also connected with vacuum pump, and the lower end of water filter cup connects to on-line monitoring analytical instrument through water pump, is also communicated with bleed valve in the lower end of water filter cup; Described trap, logical empty valve, bleed valve, vacuum pump and water pump are all electrically connected with controller.
After adopting said structure, owing to being communicated with filter membrane box and trap between raw water tubes and filter pipe, and filter pipe is connected with vacuum pump by water filter cup, the negative pressure that vacuum pump produces forms pressure reduction in the filter membrane both sides of filter membrane box, and insolubility (suspended state) heavy metal in elimination water sample, filtered water through filter membrane enters water filter cup again and detects for on-line monitoring analytical instrument, thus detect the content of beary metal data meeting " water environment quality standard " GB3838-2002, make heavy metal monitoring instrument accurately, reliably can play monitoring and warning effect.Again due to trap, logical empty valve, bleed valve, vacuum pump and water pump all with controller electric connection, what this structure controlled each valve by controller logically closes and the start and stop of vacuum pump and water pump, thus automatically, in an orderly manner carry out water sample filtration, screening system can be run with on-line monitoring analytical instrument synchronous coordination, do not need manual intervention, achieve automatic fitration and the monitoring automatically of water sample.The utility model also has rational in infrastructure, easy for operation, the advantage of Monitoring Data exact specification.
Further embodiment of the present utility model, is at least parallel with 2 filter membrane boxes between described raw water tubes and filter pipe, and every filter membrane box is in series with a trap all accordingly.The automatic cycle that many filter membrane boxes in parallel can realize between each filter membrane box switches, and ensures that filter membrane works all the time under good penetrating condition, effectively prevents filter membrane from blocking and affecting the normal work of monitoring device.
Preferred implementation of the present utility model, water filter cup upper end is connected with vacuum pump through buffer cup.Between water filter cup with vacuum pump, be communicated with buffer cup can effectively block water sample and enter vacuum pump, thus ensure that vacuum pump normal safe runs.
Preferred implementation of the present utility model, the connecting tube of water filter cup and buffer cup is parallel with pressure unit, and this pressure unit is electrically connected with controller.Pressure parameter in pipeline is transformed into electric signal and delivers to controller by pressure unit, shows that filter membrane blocks when negative pressure force value exceedes setting value in pipeline, and this Time Controller can switch to another filter membrane box work, thus guarantees the filter effect of filter membrane.
Further embodiment of the present utility model, described filter membrane box comprises airtight box body, is provided with the filter membrane sheet of 0.45 micron in this box body chamber.This box structure is convenient to the timely replacing of filter membrane sheet, and rational in infrastructure.
Preferred implementation of the present utility model, described trap, logical empty valve and bleed valve are solenoid valve.Described water pump is membrane pump.Described controller is PLC.Adopt common structure parts and there is reliable operation, advantage easy to make.
Accompanying drawing explanation
Filter pretreating device below in conjunction with the drawings and specific embodiments to the utility model Water Automatic Monitoring System water sample to be described further.
Fig. 1 is the structural representation that the utility model Water Automatic Monitoring System water sample filters a kind of embodiment of pretreating device.
In figure, 1-former water tumbler, 2-raw water tubes, 3-filter membrane box, 4-trap, 5-filter pipe, 6-logical empty valve, 7-water filter cup, 8-pressure unit, 9-buffer cup, 10-vacuum pump, 11-on-line monitoring analytical instrument, 12-bleed valve, 13-water pump, 14-controller.
Embodiment
Water Automatic Monitoring System water sample as shown in Figure 1 filters pretreating device (in figure, double solid line represents water lines, and doublet represents air pipe, and dot-and-dash line represents control electric line), and this pretreating device includes raw water tubes 2, and raw water tubes 2 adopts flexible plastic tube.Control the insertion depth of raw water tubes 2 in former water tumbler 1 and can control each water sample soakage.Between raw water tubes 2 and filter pipe 5, be parallel with 3 groups of filter membrane boxes 3 and trap 4, be all in series with trap 4 at the endpiece of every filter membrane box 3, whether the work opening or closing the filter membrane box that control correspondence of trap 4.Trap 4 is solenoid valve, and filter membrane box 3 includes airtight box body, is provided with the filter membrane sheet of 0.45 micron in box body chamber, and the box body of filter membrane box 3 includes sealing mutually and twists the upper and lower box body connect, and filter membrane sheet is between upper and lower box body.
Filter pipe 5 is connected with the upper port of water filter cup 7, and water filter cup 7 adopts airtight circular glass jar structure, and its diameter is 8cm, is highly 10cm.The upper port of water filter cup 7 is also connected with buffer cup 9, and the upper port of buffer cup 9 is connected with vacuum pump 10; Buffer cup 9 is similarly seal glass jar structure.Water filter cup 7 with the connecting tube of buffer cup 9 are parallel with pressure unit 8, and this pressure unit 8 also can be other conventional pressure transducer.The air negative pressure that vacuum pump 10 produces is passed to water filter cup 7 through buffer cup 9, the negative pressure of water filter cup 7 puts on again the filter membrane both sides of filter membrane box 3 by trap 4, thus the filtration realized former water, be parallel with logical empty valve 6 connecting on filter pipe 5 and the pipeline of water filter cup 7, the opening and closing of logical empty valve 6 realizes being communicated with or partition of water filter cup 7 and air.Logical empty valve 6 is also solenoid valve, and pressure unit 8 is conventional usual pressure transmitter, and vacuum pump 10 is gas transport pump.
The lower end of water filter cup 7 is communicated with water pump 13, and this water pump 13 connects again to on-line monitoring instrument 11, and water pump 13 is membrane pump.Also be communicated with bleed valve 12 in the lower port of water filter cup 7, this bleed valve 12 is solenoid valve.Above-mentioned trap 4, logical empty valve 6, bleed valve 12, pressure unit 8, vacuum pump 10 and water pump 13 are all electrically connected with controller 14, and controller 14 controls the sequentially-operating of each solenoid valve and pump.Controller 14 is PLC.
Heavy metal on-line computing model is usually with interval 2 hours or 4 hours sampling and testings 1 time, and water sample of the present utility model filters pretreating device and carries out work with heavy metal on-line computing model with the identical frequency.Water sample extracts in former water tumbler 1 by Water Automatic Monitoring System timing from the water bodys such as river, and water sample is after preformed precipitate certain hour, and open vacuum pump 10 and a trap 4 corresponding with filter membrane box 3, now other trap 4 is all in closed condition.Under the effect of vacuum pump 10, the water sample in former water tumbler 1 enters water filter cup 7 from the upper port of water filter cup 7 through raw water tubes 2, filter membrane box 3, the trap 4 opened.Close vacuum pump 10 and the trap 4 being in open mode, open logical empty valve 6, start water pump 13, the filtered water through elimination insolubility (suspended state) heavy metal is delivered to on-line monitoring analyzer 11 and carries out water sample determining heavy metals.When the filter membrane in filter membrane box 3 is 1 property use, all switch to next filter membrane box 3 after each water sample filtration or when there is film obstruction in filter process to work, this handoff procedure is close trap 4 corresponding to last filter membrane box, opens the trap 4 of another filter membrane box 3 correspondence.This process controls automatic cycle by PLC and switches, without the need to manual intervention.As pressure unit 8 detects that in gas circuit, negative pressure value exceeds normal setting value interval in filter process, show that blocking or breaking appears in filter membrane, now switch to next filter membrane box and proceed water sample filtration treatment.
When Water Automatic Monitoring System carries out interior pipeline-cleaning, pretreating device of the present utility model also synchronously carries out pipeline-cleaning.Open vacuum pump 10 and trap 4 during cleaning, raw water tubes 2 sucks clear water and enters water filter cup 7 by the road.Close vacuum pump 10 and trap 4, open logical empty valve 6 and bleed valve 12, emptying rinse water completes cleaning process.
Said structure is a kind of embodiment of the present utility model, and the utility model is not limited thereto.When without prejudice to the utility model ultimate principle, many improvement and replacement can also be made.As between raw water tubes and filter pipe except can 3 groups of filter membrane boxes in parallel and trap, can also be 1 group, 2 groups, 4 groups or more groups.Water pump 13 both can be membrane pump, also can be other common water pump.Bleed valve 12 both can be parallel to the lower end of water filter cup, also can be series in the pipeline of water filter cup and water pump.Controller is also not limited only to adopt PLC.Pressure unit 8 can also be the pressure transducer that other structure is formed.Etc..These conversion and improvement all fall in protection domain of the present utility model.
Claims (8)
1. Water Automatic Monitoring System water sample filter a pretreating device, comprise raw water tubes (2), it is characterized in that: described raw water tubes (2) successively after filtration bellows (3) be connected with filter pipe (5) with trap (4); Filter pipe (5) is connected with water filter cup (7) upper end, and the pipeline connecting filter pipe (5) and water filter cup (7) is parallel with logical empty valve (6); The upper end of water filter cup (7) is also connected with vacuum pump (10), and the lower end of water filter cup (7) connects to on-line monitoring analytical instrument (11) through water pump (13), is also communicated with bleed valve (12) in the lower end of water filter cup (7); Described trap (4), logical empty valve (6), bleed valve (12), vacuum pump (10) and water pump (13) are all electrically connected with controller (14).
2. Water Automatic Monitoring System water sample according to claim 1 filters pretreating device, it is characterized in that: between described raw water tubes (2) and filter pipe (5), be at least parallel with 2 filter membrane boxes (3), every filter membrane box (3) is in series with a trap (4) all accordingly.
3. Water Automatic Monitoring System water sample according to claim 1 filters pretreating device, it is characterized in that: water filter cup (7) upper end is connected with vacuum pump (10) through buffer cup (9).
4. Water Automatic Monitoring System water sample according to claim 3 filters pretreating device, it is characterized in that: on the connecting tube of water filter cup (7) with buffer cup (9), be parallel with pressure unit (8), this pressure unit (8) is electrically connected with controller (14).
5. Water Automatic Monitoring System water sample according to claim 1 filters pretreating device, it is characterized in that: described filter membrane box (3) comprises airtight box body, is provided with the filter membrane sheet of 0.45 micron in this box body chamber.
6. Water Automatic Monitoring System water sample according to claim 1 filters pretreating device, it is characterized in that: described trap (4), logical empty valve (6) and bleed valve (12) are solenoid valve.
7. Water Automatic Monitoring System water sample according to claim 1 filters pretreating device, it is characterized in that: described water pump (13) is membrane pump.
8. Water Automatic Monitoring System water sample according to claim 1 filters pretreating device, it is characterized in that: described controller (14) is PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420662557.7U CN204165816U (en) | 2014-11-09 | 2014-11-09 | A kind of Water Automatic Monitoring System water sample filters pretreating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420662557.7U CN204165816U (en) | 2014-11-09 | 2014-11-09 | A kind of Water Automatic Monitoring System water sample filters pretreating device |
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| CN204165816U true CN204165816U (en) | 2015-02-18 |
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| CN201420662557.7U Expired - Fee Related CN204165816U (en) | 2014-11-09 | 2014-11-09 | A kind of Water Automatic Monitoring System water sample filters pretreating device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043844A (en) * | 2015-06-08 | 2015-11-11 | 上海昂林科学仪器有限公司 | Water sample filter and device for automatically extracting water sample |
| CN105606432A (en) * | 2016-03-17 | 2016-05-25 | 中国石油大学(北京) | Pretreatment device for organic carbon content analysis |
| CN105865845A (en) * | 2016-06-08 | 2016-08-17 | 太平洋水处理工程有限公司 | Water treatment online sampling analysis system |
| CN107376488A (en) * | 2017-08-15 | 2017-11-24 | 江苏省环境监测中心 | Suitable for the filtration in-situ system of the water sample containing heavy metal |
| CN115290386A (en) * | 2022-08-02 | 2022-11-04 | 杭州粮泰智能科技有限公司 | Sampling identification processing method, device, equipment and storage medium |
-
2014
- 2014-11-09 CN CN201420662557.7U patent/CN204165816U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043844A (en) * | 2015-06-08 | 2015-11-11 | 上海昂林科学仪器有限公司 | Water sample filter and device for automatically extracting water sample |
| CN105043844B (en) * | 2015-06-08 | 2018-04-10 | 上海昂林科学仪器有限公司 | A kind of device for water sample auto extractive |
| CN105606432A (en) * | 2016-03-17 | 2016-05-25 | 中国石油大学(北京) | Pretreatment device for organic carbon content analysis |
| CN105865845A (en) * | 2016-06-08 | 2016-08-17 | 太平洋水处理工程有限公司 | Water treatment online sampling analysis system |
| CN105865845B (en) * | 2016-06-08 | 2018-07-10 | 太平洋水处理工程有限公司 | A kind of water process on-line period analysis system |
| CN107376488A (en) * | 2017-08-15 | 2017-11-24 | 江苏省环境监测中心 | Suitable for the filtration in-situ system of the water sample containing heavy metal |
| CN115290386A (en) * | 2022-08-02 | 2022-11-04 | 杭州粮泰智能科技有限公司 | Sampling identification processing method, device, equipment and storage medium |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20151109 |
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| EXPY | Termination of patent right or utility model |