CN112461600A - Water quality testing preprocessing device - Google Patents
Water quality testing preprocessing device Download PDFInfo
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- CN112461600A CN112461600A CN202011250177.9A CN202011250177A CN112461600A CN 112461600 A CN112461600 A CN 112461600A CN 202011250177 A CN202011250177 A CN 202011250177A CN 112461600 A CN112461600 A CN 112461600A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 259
- 238000007781 pre-processing Methods 0.000 title claims description 7
- 238000012372 quality testing Methods 0.000 title claims description 4
- 238000005070 sampling Methods 0.000 claims abstract description 142
- 238000001914 filtration Methods 0.000 claims abstract description 36
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 239000012535 impurity Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 124
- 238000012544 monitoring process Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 239000000284 extract Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
Abstract
The invention discloses a water quality detection pretreatment device, which comprises a Y-shaped filter, a water inlet ball valve, a water outlet ball valve, a filter screen, a sampling pump, a peristaltic pump, a sampling cup, a control device and an analysis device, wherein a water inlet of the Y-shaped filter is connected with the sampling pump through a water inlet pipe, and primary filtering treatment is carried out on an original water sample collected by the sampling pump; the invention has the beneficial effects that: according to the technical scheme, impurities in an original water sample collected by the sampling pump can be effectively filtered, the normal operation of the analysis instrument is protected, the service life of the instrument is prolonged, and the analysis accuracy is improved; in addition, guarantee that the pipeline is unobstructed, reduce the resistance that receives in the water sample transportation process, still can shorten the time of interval between analysis and the original sampling, improved the representativeness of water sample in the sample cup and the promptness of water sample analysis.
Description
Technical Field
The invention relates to the technical field of water quality detection, in particular to a water quality detection pretreatment device.
Background
The water quality monitoring is a process of monitoring and measuring the types of pollutants in the water body, the concentrations and the variation trends of various pollutants and evaluating the water quality condition. In order to improve the representativeness of the water sample and eliminate factors which interfere with the analysis of the instrument and influence the use of the instrument, the water sample is pretreated after being collected by the sampling pump. The existing method is mainly characterized in that the pretreatment is carried out through a filter screen, but if the mesh opening is too large, large particles such as sludge and aquatic weeds can not be filtered, the use and analysis of instruments can still be influenced, and pipelines can also be blocked; if the mesh is too small, the flow rate of the water sample can be reduced, so that the water sample analyzed by the instrument (namely the pretreated water sample) has serious delay and stay relative to the water sample collected by the sampling pump, and the timeliness of the water sample analysis is poor.
Disclosure of Invention
The invention mainly solves the technical problem of providing a water quality detection pretreatment device, and solves one or more of the problems in the prior art.
In order to solve the technical problems, the invention adopts a technical scheme that: a water quality testing preprocessing device which innovation point lies in: the system comprises a Y-shaped filter, a water inlet ball valve, a water outlet ball valve, a filter screen, a sampling pump, a peristaltic pump, a sampling cup, a control device and an analysis device, wherein a water inlet of the Y-shaped filter is connected with the sampling pump through a water inlet pipe, and primary filtering treatment is carried out on an original water sample collected by the sampling pump;
the first outlet of the Y-shaped filter is connected with the water inlet of the sampling cup through a water sample conveying pipeline, the filter screen is arranged at the water inlet of the sampling cup, and the filter screen is used for carrying out secondary filtration treatment on the water sample subjected to primary filtration treatment and conveyed by the water sample conveying pipeline;
a second outlet of the Y-shaped filter discharges the filtered materials after the primary filtering treatment through a water outlet pipe;
the water inlet ball valve is arranged in the water inlet pipe, the water outlet ball valve is arranged in the water outlet pipe, and the flow rate of a water sample in the water sample conveying pipeline is controlled by adjusting the opening degree of the water inlet ball valve or the water outlet ball valve;
the sampling pump is used for collecting an original water sample and conveying the original water sample to the pretreatment device; the pretreatment device is used for carrying out two-stage filtration treatment on an original water sample and conveying the water sample after filtration treatment to the sampling cup;
a transmission pipeline is arranged between the sampling pump and the pretreatment device and comprises a transverse section and a vertical section, one end of the transverse section is communicated with the pretreatment device, the other end of the transverse section is communicated with the top of the vertical section, the sampling pump is installed at the tail end of the vertical section, the vertical section is a telescopic sleeve, the telescopic sleeve is composed of at least one telescopic section, and the vertical section is provided with scale marks of a shallow mark and a deep mark;
the peristaltic pump is used for controlling a sampling water pipe inserted into the sampling cup to collect a water sample after filtration treatment, and conveying the water sample to the analysis device for water quality analysis;
the control device is used for controlling the opening or closing of the sampling pump and the peristaltic pump.
In some embodiments, the Y-type filter performs a primary filtering treatment on the water sample in a negative pressure suction mode.
In some embodiments, the screen has a gauge of: the aperture phi =15mm and is 20-40 meshes.
In some embodiments, the sampling cup is provided with a water inlet, a water outlet and a sampling port, and the water inlet and the water outlet are correspondingly arranged on two side surfaces of the cup body of the sampling cup and are positioned in the middle of the side surfaces; the sample connection is opened at the top of sampling cup body, and the sample water pipe passes through the sample connection and inserts the sampling cup.
In some embodiments, the depth of insertion of the sample water tube into the sample cup is no less than 2/3 the height of the cup body.
The invention has the beneficial effects that: according to the water quality monitoring pretreatment device and the water quality monitoring system, the Y-shaped filter and the filter screen are matched with each other, the primary water sample collected by the sampling pump is subjected to secondary filtering treatment, and then the primary water sample is conveyed to the sampling cup for standby. Therefore, impurities in the original water sample collected by the sampling pump can be effectively filtered, the normal operation of the analysis instrument is protected, the service life of the instrument is prolonged, and the analysis accuracy is improved; in addition, guarantee that the pipeline is unobstructed, reduce the resistance that receives in the water sample transportation process, still can shorten the time of interval between analysis and the original sampling, improved the representativeness of water sample in the sample cup and the promptness of water sample analysis.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic view of an original sampling portion of a water quality monitoring system according to the present invention.
FIG. 2 is a schematic diagram a of a pretreatment part of a water quality monitoring pretreatment system according to the present invention.
FIG. 3 is a schematic diagram b of the pretreatment part of a water quality monitoring pretreatment system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, the embodiment of the present invention includes:
a water quality monitoring pre-system comprises an original sampling part, a pre-processing part, an analysis sampling part and a control part. The following explanation is made one by one.
Initial sampling part referring to fig. 1, there is shown a schematic diagram of the initial sampling part of the present invention, which mainly comprises a sampling pump 11, a PVC pipe, and a valve 12. The sampling pump collects an original water sample from a water source to be detected and transmits the original water sample to the online analytical instrument 10 through the PVC pipeline, wherein the valve is used for controlling the on-off of the PVC pipeline.
In order to improve the representativeness of the water sample and effectively filter impurities, the invention does not directly sample and analyze the original water sample transmitted by the sampling pump, but firstly carries out secondary filtration treatment by the pretreatment part.
The pretreatment part is shown in a schematic diagram of primary filtration treatment of the pretreatment part, and mainly comprises a Y-shaped filter, a water inlet ball valve, a water outlet ball valve and a filter screen, and is shown in fig. 2. The primary filtering treatment is realized by a Y-type filter, and is mainly used for filtering large particles in an original water sample.
Y type filter has a water inlet and two exports, wherein, water inlet 22 links to each other with the sampling pump through the inlet tube (specifically the inlet tube links to each other with the PVC pipeline, realizes the intercommunication between Y type filter water inlet and the sampling pump), and the original water sample of sampling cup collection gets into Y type filter through the water inlet behind PVC pipeline, the inlet tube, and Y type filter carries out one-level filtration with the inspiratory mode of negative pressure to original water sample, divide into two parts with original water sample: one part is the filtered material (i.e. the large particles in the above) after the primary filtration treatment, and the gravity of the filtered material is heavy, and the filtered material flows out of the Y-shaped filter through the second outlet 24 and is discharged through a water outlet pipe, which can be specifically referred to as the water outlet pipe shown in fig. 1. The filter can be directly discharged into the water source to be measured through the water outlet pipe because the filter does not influence the water source to be measured, and certainly, if special requirements exist, the filter can be discharged after being processed according to circumstances, or the filter can be discharged into other specified areas. And a part of the water sample is retained after the primary filtration treatment, and the part of the water sample is conveyed to a lower stage for secondary filtration treatment through the first outlet 23. The second grade filtration treatment selects the filter screen to realize, mainly keeps the less impurity of granularity in the water sample for the filtering. The filter screen is arranged at the water inlet of the sampling cup (belonging to the analysis sampling part), specifically referring to the position a in the schematic diagram shown in fig. 3, so that before the Y-shaped filter conveys the retained water sample subjected to the primary filtration treatment to the water inlet of the sampling cup through the first outlet and the water sample conveying pipeline, the water sample is subjected to the secondary filtration treatment through the filter screen, that is, the water sample capable of entering the sampling cup is the water sample subjected to the primary and secondary filtration treatment. So, impurity in just can furthest's filtering original water sample reduces the influence of original water sample to analytical instrument. It should be noted that the preferred filter screen specifications of the present invention are: the aperture phi =15, and the mesh is 20-40. In addition, the filter screen can be cleaned or replaced at intervals according to the condition because the filtered substances obtained by the secondary filtering treatment are blocked on the filter screen.
In order to better control the flow rate of the water sample in the pretreatment process, the pretreatment part of the invention also comprises a water inlet ball valve 21 and a water outlet ball valve 25 which are respectively arranged in the water inlet pipe and the water outlet pipe. For example, the flow rate of the water sample in the water inlet pipe is controlled to be 3m/s by adjusting the opening of the water inlet ball valve arranged on the water inlet pipe, and the flow rate in the water outlet pipe is controlled to be 1m/s by adjusting the opening of the water outlet ball valve arranged on the water outlet pipe, so that the flow rate of the water sample in the water sample conveying pipeline can be controlled to be kept at 2 m/s. The two-stage filtration can effectively filter impurities in the original water sample, protect the normal operation of the analysis instrument and improve the service life and the analysis accuracy of the instrument; in addition, still can guarantee that the pipeline is unobstructed, reduce the resistance that receives among the water sample transportation process, just can shorten the time of interval between analysis and the original sampling, improved the representativeness of water sample and the timeliness of water sample analysis to a certain extent.
The analysis sampling part comprises a sampling cup, a sampling water pipe, a peristaltic pump and an analysis instrument, and the improvement of the analysis sampling part mainly aims at the sampling process, and particularly can be seen in a schematic diagram shown in figure 3.
The sampling cup has a water inlet 31, a water outlet 32 and a sampling port 33. Wherein, the water sample after the secondary filtration enters the sampling cup through the water inlet, if no residual water sample exists in the sampling cup (the sampling cup is used for the first time or the sampling cup is cleaned), the water sample flowing into the sampling cup through the water inlet is the water sample waiting for being sampled and analyzed; if there is the residual water sample in the sampling cup, then the water sample that flows into the sampling cup through the water inlet will replace the residual water sample earlier, avoids the residual water sample to influence this water quality monitoring's result, accomplishes after the replacement process, and the water sample that flows into the sampling cup again is the water sample that waits to be sampled and analyzed.
The water outlet is mainly used for maintaining the volume of the water sample stored in the sampling cup. In addition, when there is the residual water sample, the delivery port still is used for clearing up the residual water sample, perhaps when the residual water sample is replaced to current water sample, is used for discharging the mixed liquid of residual water sample and current water sample, and it is also in order to clear up the residual water sample in essence.
The water inlet and the water outlet are respectively arranged on the four side walls of the sampling cup, and can be respectively positioned on different side walls or different positions of the same side wall, and the invention does not need to be particularly limited.
As an example, the two sampling cups are preferably correspondingly arranged on two side surfaces of the sampling cup and are located at the middle position of the side surfaces, and particularly, the schematic diagram shown in FIG. 3 can be seen. This is mainly because, if set up the two too high (be close to the sample connection promptly), just explain that the sampling cup can save more water samples, so, will increase the replacement time of remaining water sample certainly, and need more current water samples to replace remaining water sample, that is to say, need the sampling pump to gather more original water samples, corresponding needs preprocessing device filters more water samples, leads to the energy waste.
If the sampling water pipe 34 is too low (i.e. further away from the sampling port), it means that the sampling cup cannot store too many water samples, and if the sampling water pipe does not timely extract water samples from the sampling cup, the water samples will flow out through the water outlet, which also causes energy waste, and at the same time, the requirement for the peristaltic pump (for controlling the sampling water pipe to extract water samples from the sampling cup) is higher.
It should be noted that, the sample connection is seted up at the top of sampling cup body, and the water pipe that takes a sample just can insert the sampling cup through the sample connection like this in, and then extracts the water sample from the sampling cup and carry to analytical instrument department and carry out water quality analysis. In general, as long as the sampling water pipe is submerged under the water sample stored in the sampling cup, taking the case shown in fig. 3 as an example, the volume of the water sample stored in the sampling cup is about half of the volume of the sampling cup, and accordingly, the depth of the sampling water pipe inserted into the sampling cup is only slightly greater than 1/2 of the height of the cup body, but in order to ensure that the sampling water pipe can continuously extract the water sample from the sampling cup during the sampling analysis process, the depth of the sampling water pipe inserted into the sampling cup is preferably set to be not less than 2/3 of the height of the cup body. As an example, the sample cup of the present invention may be sized to be 100mm by 100 mm.
Of course, in the actual monitoring process, the appropriate specification can be selected according to the use requirement, and the invention is not limited to this. The analyzer, the sampling water pipe, and the like may be considered as a part of the analyzer of the present invention.
The control part of the invention also controls the opening or closing of the sampling pump and the peristaltic pump through the control device, thereby avoiding energy waste caused by long-time running of the sampling pump or the peristaltic pump.
As an example of the control device in the present invention, it may be embodied as a PLC Programmable Logic Controller).
Specifically, the control device may calculate the on time T2 of the sampling pump in the following manner: if the peristaltic pump is started at the time T1, the sampling water pipe is controlled to extract the water sample from the sampling cup, the sampling pump needs to be started at the time T ahead of time, the sampling pump collects the original water sample from the water source to be detected, and then the original water sample is conveyed to the pretreatment device for filtration treatment and finally conveyed to the sampling cup for standby. That is, the time T2 for turning on the sampling pump = T1-T. If the peristaltic pump is started at 12:00 and t =10min is calculated, the control device controls the sampling pump to be started at 11: 50.
The starting interval t of the peristaltic pump and the sampling pump is mainly influenced by the following two factors: the time t1 sampling pump of water sample from the sampling pump to the sampling cup is gathered the water sample after from the water source that awaits measuring, enters into the sampling cup through PVC pipeline, inlet tube, water sample pipeline, and this distance L can foresee in advance. In addition, as described above, the flow rate of the water sample can be controlled by controlling the opening degree of the water inlet ball valve or the water outlet valve, and once the flow rate is controlled to be constant, the flow rate v of the water sample can be obtained by measuring through the flow meter. In this way, the time t1= L/ν can be calculated. It should be noted that, the flow q of the water sample in the water sample delivery pipe can also be obtained through the measurement of the flow meter, and then the flow velocity of the water sample is obtained through v = qr calculation, wherein r is the pipe diameter of the water sample delivery pipe. Time t2 of the current water sample replacing the residual water sample, wherein V is the volume of the water sample in the sampling cup, q is the water sample flow in the water sample conveying pipeline, c1 is the concentration of the water sample to be detected, and c2 is the concentration of the water sample at the last time. Once the water inlet and the water outlet of the sampling cup are determined, the volume of the water sample which can be stored in the sampling cup is determined to be unchanged, so that the volume V is a known value. The flow q can be directly obtained by measuring the flowmeter or can be obtained by calculating the flow velocity v and the pipe diameter r, so the flow q is also a known value. The concentration c2 of the previous water sample (i.e. the concentration of the residual water sample in the cup) is extracted by the sampling water tube to the analyzer for analysis, so the concentration c2 is also a known value. The concentration of the water sample to be detected (i.e. the concentration of the current water sample) can not be known temporarily, but according to past empirical data or according to the available range of the instrument, the ratio between the concentration of the current water sample and the concentration of the residual water sample has an available range, i.e. relative to the concentration of the residual water sample, the concentration of the current water sample is not lower than a minimum concentration value nor higher than a maximum concentration value, so that the ratio k between the concentration of the current water sample and the concentration of the residual water sample can be determined, generally, k is not more than 10, and k can be preferably selected to be 2.3 in the scheme of the present invention. After t1 and t2 are obtained through calculation, the time t = t1+ t2 of the peristaltic pump lagging sampling pump can be further obtained through calculation, so that the time for starting the sampling pump and the peristaltic pump is determined respectively, and the operation energy of the sampling pump and the peristaltic pump is saved to the maximum extent. It should be noted that if there is no residual water sample in the sampling pump, the time that the peristaltic pump lags the sampling pump is t = t 1. After the peristaltic pump is controlled to be started, the fact that the water sample with the volume V is stored in the sampling cup is indicated, the sampling pump can be closed at the moment, the original water sample collecting process and the preprocessing process are stopped, and running energy of the sampling pump is saved. Or, in order to ensure the real-time performance and the representativeness of the water samples in the sampling cup, the sampling pump can be closed after the peristaltic pump stops not pumping the water samples from the sampling cup, so as to improve the accuracy of the monitoring result. In addition, in the present invention, the concentration of the residual water sample and the concentration of the water sample to be measured are both parameters to be measured, and the parameters to be measured may be ammonia nitrogen, Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), and the like.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A water quality testing preprocessing device which characterized in that: the system comprises a Y-shaped filter, a water inlet ball valve, a water outlet ball valve, a filter screen, a sampling pump, a peristaltic pump, a sampling cup, a control device and an analysis device, wherein a water inlet of the Y-shaped filter is connected with the sampling pump through a water inlet pipe, and primary filtering treatment is carried out on an original water sample collected by the sampling pump; the first outlet of the Y-shaped filter is connected with a water inlet of a sampling cup through a water sample conveying pipeline, the filter screen is arranged at the water inlet of the sampling cup, and the filter screen is used for carrying out secondary filtering treatment on a water sample which is conveyed by the water sample conveying pipeline and is subjected to primary filtering treatment; a second outlet of the Y-shaped filter discharges filtered materials subjected to primary filtering treatment through a water outlet pipe; the water inlet ball valve is arranged in the water inlet pipe, the water outlet ball valve is arranged in the water outlet pipe, and the flow rate of a water sample in the water sample conveying pipeline is controlled by adjusting the opening of the water inlet ball valve or the water outlet ball valve; the sampling pump is used for collecting an original water sample and conveying the original water sample to the pretreatment device; the pretreatment device is used for carrying out two-stage filtration treatment on an original water sample and conveying the water sample after filtration treatment to the sampling cup;
a transmission pipeline is arranged between the sampling pump and the pretreatment device and comprises a transverse section and a vertical section, one end of the transverse section is communicated with the pretreatment device, the other end of the transverse section is communicated with the top of the vertical section, the sampling pump is installed at the tail end of the vertical section, the vertical section is a telescopic sleeve, the telescopic sleeve is composed of at least one telescopic section, and the vertical section is provided with scale marks of a shallow mark and a deep mark;
the peristaltic pump is used for controlling a sampling water pipe inserted into the sampling cup to collect a water sample after filtration treatment, and conveying the water sample to the analysis device for water quality analysis;
the control device is used for controlling the opening or closing of the sampling pump and the peristaltic pump.
2. The water quality detection pretreatment device according to claim 1, characterized in that: the Y-shaped filter is used for carrying out primary filtering treatment on the water sample in a negative pressure suction mode.
3. The water quality detection pretreatment device according to claim 1, characterized in that: the specification of the filter screen is as follows: the aperture phi =15mm and is 20-40 meshes.
4. The water quality detection pretreatment device according to claim 1, characterized in that: the sampling cup is provided with a water inlet, a water outlet and a sampling port, and the water inlet and the water outlet are correspondingly arranged on two side surfaces of the cup body of the sampling cup and are positioned in the middle of the side surfaces; the sampling port is arranged at the top of the sampling cup body, and the sampling water pipe is inserted into the sampling cup through the sampling port.
5. The water quality detection pretreatment device according to claim 1, characterized in that: the sampling water pipe is inserted into the sampling cup to a depth not less than 2/3 of the height of the cup body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011250177.9A CN112461600A (en) | 2020-11-11 | 2020-11-11 | Water quality testing preprocessing device |
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| CN202011250177.9A CN112461600A (en) | 2020-11-11 | 2020-11-11 | Water quality testing preprocessing device |
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| CN112461600A true CN112461600A (en) | 2021-03-09 |
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| CN202011250177.9A Pending CN112461600A (en) | 2020-11-11 | 2020-11-11 | Water quality testing preprocessing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113075377A (en) * | 2021-04-01 | 2021-07-06 | 山东博厚数据科技有限公司 | Intelligent water sample collection system and method for sewage orthophosphate meter |
| CN113945428A (en) * | 2021-10-20 | 2022-01-18 | 上海海洋大学 | Intelligent ballast water sampling equipment |
| CN116183303A (en) * | 2023-03-21 | 2023-05-30 | 南京捷发科技有限公司 | Pretreatment device integrating water sample sampling, filtering, overflow and pressure relief functions |
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| CN103645292A (en) * | 2013-12-30 | 2014-03-19 | 北京雪迪龙科技股份有限公司 | Water-quality monitoring pre-treatment device and water quality monitoring system |
| CN207396124U (en) * | 2017-11-02 | 2018-05-22 | 宜昌市巨正科技环保有限公司 | A kind of ammonia nitrogen on-line checking water sample preprocessing apparatus |
| CN111855372A (en) * | 2020-08-26 | 2020-10-30 | 福州致友环境科技有限公司 | Dynamic precision type water sample proportioning device |
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2020
- 2020-11-11 CN CN202011250177.9A patent/CN112461600A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645292A (en) * | 2013-12-30 | 2014-03-19 | 北京雪迪龙科技股份有限公司 | Water-quality monitoring pre-treatment device and water quality monitoring system |
| CN207396124U (en) * | 2017-11-02 | 2018-05-22 | 宜昌市巨正科技环保有限公司 | A kind of ammonia nitrogen on-line checking water sample preprocessing apparatus |
| CN111855372A (en) * | 2020-08-26 | 2020-10-30 | 福州致友环境科技有限公司 | Dynamic precision type water sample proportioning device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113075377A (en) * | 2021-04-01 | 2021-07-06 | 山东博厚数据科技有限公司 | Intelligent water sample collection system and method for sewage orthophosphate meter |
| CN113945428A (en) * | 2021-10-20 | 2022-01-18 | 上海海洋大学 | Intelligent ballast water sampling equipment |
| CN116183303A (en) * | 2023-03-21 | 2023-05-30 | 南京捷发科技有限公司 | Pretreatment device integrating water sample sampling, filtering, overflow and pressure relief functions |
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