CN116026911A - Join in marriage mark and detect washing integration heavy metal monitoring facilities and water quality testing system - Google Patents
Join in marriage mark and detect washing integration heavy metal monitoring facilities and water quality testing system Download PDFInfo
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- CN116026911A CN116026911A CN202211699029.4A CN202211699029A CN116026911A CN 116026911 A CN116026911 A CN 116026911A CN 202211699029 A CN202211699029 A CN 202211699029A CN 116026911 A CN116026911 A CN 116026911A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A20/20—Controlling water pollution; Waste water treatment
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Abstract
The invention provides a label matching detection and cleaning integrated heavy metal monitoring device and a water quality detection system, and relates to the field of water quality on-line monitoring. The monitoring equipment comprises a detection product quantifying system, a sample quantifying system, a solvent conveying system, a standard mother liquor conveying system, a digestion room and a control system; the utility model provides a sample ration system includes first multichannel valve and respectively with the standard solution mixing valve, detect article ration ring and the first raffinate discharge pipe of the different hole sites intercommunication of first multichannel valve, sample ration system is provided with second multichannel valve and respectively with the feed tube, the vacuum pump, sample ration ring and the second raffinate discharge pipe of the different hole sites intercommunication of second multichannel valve, this application can prepare the standard solution of different concentration automatically and detect, can also sample the sample simultaneously, filter and mix the back ration detection with the solvent, can realize self-cleaning pipeline, the vacuum pump draws the solution fast, pressure stability, avoid the metal contamination that the pump body brought, ensure the accuracy of detection.
Description
Technical Field
The invention relates to the field of online water quality monitoring, in particular to a scale-matching detection and cleaning integrated heavy metal monitoring device and a water quality detection system.
Background
With the rapid development of economy and science, the harm brought by the exceeding of heavy metals to human health is continuously emerging. The production process leads heavy metals to be discharged into the water body environment, and the heavy metals are not easy to degrade, so that drinking water, food chains and organisms are enriched in natural environment and human body, and serious harm is caused to human health and ecological environment. The environmental water quality monitoring work mainly adopts manual field sampling, and needs manual participation to do a large amount of earlier stage preparation work, water sample collection, preservation, transportation, reagent addition, standing digestion and other works. The laboratory monitoring has the defects of low monitoring frequency, large sampling error, scattered monitoring data, incapability of timely reflecting pollution change conditions and the like. Therefore, on-line monitoring of heavy metals in the quality of the propulsion water is very necessary.
Currently, the online monitoring of heavy metals in water quality mostly adopts photometry, anodic stripping method, ion electrode method and atomic absorption spectrometry. The methods have the problems of high detection limit, low accuracy, incomplete monitoring, low precision, low accuracy and the like. The existing inductively coupled plasma mass spectrometry heavy metal detection instrument is mainly applied to detection and analysis in laboratories, and has the advantages of low detection limit, wide dynamic linear range, less interference, high analysis precision, high analysis speed, capability of simultaneously measuring multiple elements, capability of providing accurate isotope information and the like.
Currently, existing detection devices include:
1. the utility model provides a mark device is joined in marriage in liquid dilution, draws mother liquor and diluent through two syringe pump, pours into the sample bottle of placing on the carousel into, realizes automatic mark of joining in marriage.
2. The online monitoring system for the heavy metals in the water quality can realize automatic quantitative sampling, premixing digestion of various reagents and hydride reaction based on an atomic fluorescence spectrum.
3. An automatic heavy metal water quality monitoring system can realize automatic water taking and is matched with a heavy metal monitor for use.
4. The miniature spectrometer is a core detection device, and can realize automatic on-line monitoring of the content of heavy metals such as mercury, lead, cadmium, chromium, arsenic and the like in water.
It has been found that inductively coupled plasma mass spectrometry (ICP-MS) is widely used in heavy metal detection fields, but is commonly used for laboratory analysis and monitoring. The existing on-line monitoring is mostly required to manually prepare standard solutions with different concentrations, a large amount of standard solutions with different concentrations are prepared at one time to be stored for continuous monitoring use, and the manual workload and inaccuracy are increased. At present, a plurality of automatic mark preparing devices exist, and most of prepared solutions are stored in standard sample bottles, so that the continuous sample injection of inductively coupled plasmas cannot be satisfied. At present, a photometry, an anodic stripping method and an ion electrode method are adopted in a water quality heavy metal on-line monitoring instrument, so that the detection limit is high, the accuracy is low, the types of detectable elements are limited, the coverage is insufficient, the monitoring is incomplete, the capability is weak, and the detection requirement cannot be met; lack of real-time correction, large deviation of data precision and accuracy compared with laboratory methods; the secondary pollution is caused by the color developing agent, masking agent, electrode, electroplating solution and the like used in the method.
In view of this, the present application is specifically proposed.
Disclosure of Invention
The invention aims to provide a standard matching detection and cleaning integrated heavy metal monitoring device and a water quality detection system, which can automatically prepare standard solutions with different concentrations for detection, can sample a sample and quantitatively detect the mixed solution, can automatically clean a pipeline, can quickly suck the solution by a vacuum pump, has stable pressure, can avoid metal pollution caused by a pump body, can ensure the detection accuracy, and also has a reverse pipeline automatic cleaning function.
Embodiments of the invention may be implemented as follows:
in a first aspect, the invention provides a scale-matching detection and cleaning integrated heavy metal monitoring device, which comprises a detection product quantifying system, a sample quantifying system, a solvent conveying system, a standard mother liquor conveying system, a digestion room and a control system;
the detection article quantifying system comprises a standard liquid mixing valve, a first multi-channel valve and a detection article quantifying ring, wherein the standard liquid mixing valve and the detection article quantifying ring are communicated with different hole sites of the first multi-channel valve;
the sample quantifying system is provided with a second multichannel valve, a sample inlet pipe, a vacuum pump, a sample quantifying ring and a back flushing pipe, wherein the sample inlet pipe, the vacuum pump, the sample quantifying ring and the back flushing pipe are communicated with different hole sites of the second multichannel valve;
The second multi-channel valve is communicated with the solvent conveying system, the solvent conveying system is communicated with the digestion chamber, the digestion chamber and the standard mother liquor conveying system are simultaneously communicated with an inlet of the standard liquid mixing valve, the control system controls the hole site connection state of the first multi-channel valve to change so as to realize that liquid in the standard liquid mixing valve is injected into and discharged from the quantitative ring of the detection product, and the control system controls the hole site connection state of the second multi-channel valve to change so as to realize that a sample enters the quantitative ring of the sample and is discharged from the quantitative ring of the sample to the solvent conveying system.
In an alternative embodiment, the first multi-channel valve is a six-way valve, the six-way valve is provided with a six-way first hole site, a six-way second hole site, a six-way third hole site, a six-way fourth hole site, a six-way fifth hole site and a six-way sixth hole site, the first multi-channel valve switches between a six-way input state and a six-way output state through the control system, when in the six-way input state, the six-way first hole site is communicated with the six-way second hole site, the six-way third hole site is communicated with the six-way fourth hole site, and the six-way fifth hole site is communicated with the six-way sixth hole site; when the six-way output state is adopted, the six-way six-hole site is communicated with the six-way first-hole site, the six-way second-hole site is communicated with the six-way third-hole site, and the six-way fourth-hole site is communicated with the six-way fifth-hole site; the outlet of the standard liquid mixing valve is communicated with the six-way hole site No. five, the inlet of the detection product quantitative ring is communicated with the six-way hole site No. six, and the outlet of the detection product quantitative ring is communicated with the six-way hole site No. three;
Preferably, the quantitative detection product system further comprises a first residual liquid discharge pipe, and the first residual liquid discharge pipe is communicated with the six-way fourth hole site.
In an optional embodiment, the label matching detection and cleaning integrated heavy metal monitoring device further comprises an inner label pipe and a label adding mixing valve, wherein the inner label pipe and the six-way second-size hole site are respectively communicated with two inlets of the label adding mixing valve, and an outlet of the label adding mixing valve is used for being connected with an atomizer.
In an alternative embodiment, the second multi-channel valve is a ten-way valve, and the ten-way valve is provided with a ten-way first hole site, a ten-way second hole site, a ten-way third hole site, a ten-way fourth hole site, a ten-way fifth hole site, a ten-way sixth hole site, a ten-way seventh hole site, a ten-way eighth hole site, a ten-way ninth hole site and a ten-way tenth hole site; the second multi-channel valve is used for switching a ten-way input state and a ten-way output state through the control system, when the valve is in the ten-way input state, the first ten-way hole site is communicated with the second ten-way hole site, the third ten-way hole site is communicated with the fourth ten-way hole site, the fifth ten-way hole site is communicated with the sixth ten-way hole site, the seventh ten-way hole site is communicated with the eighth ten-way hole site, and the ninth ten-way hole site is communicated with the tenth ten-way hole site; when the ten-way output state is adopted, the ten-way hole site is communicated with the ten-way first hole site, the ten-way second hole site is communicated with the ten-way third hole site, the ten-way fourth hole site is communicated with the ten-way fifth hole site, the ten-way sixth hole site is communicated with the ten-way seventh hole site, and the ten-way eighth hole site is communicated with the ten-way ninth hole site; the sample injection pipe is communicated with the tenth-pass first hole site, the inlet and the outlet of the sample quantifying ring are respectively communicated with the tenth-pass second hole site and the tenth-pass fifth hole site, the inlet and the outlet of the vacuum pump are respectively communicated with the tenth-pass sixth hole site and the tenth-pass tenth hole site, and the back flushing pipe is communicated with the tenth-pass seventh hole site;
Preferably, the sample quantifying system further comprises a second residual liquid discharge pipe, which is communicated with the tenth through ninth hole site;
preferably, a filter is arranged at the inlet end of the sample injection tube, and a filter membrane is arranged in the filter.
In an alternative embodiment, the solvent delivery system comprises a solvent injection pump, a solvent pump solenoid valve and a solvent delivery valve, wherein two outlets of the solvent pump solenoid valve are respectively communicated with the solvent injection pump and the ten-way third hole site, the ten-way fourth hole site is communicated with the solvent delivery valve, and an outlet of the solvent delivery valve is communicated with an inlet of the digestion chamber.
In an alternative embodiment, the solvent injection pump comprises a first injection pump and a second injection pump, the solvent pump solenoid valve comprises a first solvent pump solenoid valve and a second solvent pump solenoid valve, one outlet of the first solvent pump solenoid valve is communicated with the first injection pump, one outlet of the second solvent pump solenoid valve is communicated with the second injection pump, the second injection pump has a larger volume than the first injection pump, the other outlets of the first solvent pump solenoid valve and the second solvent pump solenoid valve are communicated with the solvent delivery valve, and the first injection pump and the second injection pump are connected with the control system;
Preferably, the solvent delivery system further comprises a solvent input three-way valve and a solvent input solenoid valve, wherein an outlet of the solvent input solenoid valve is communicated with an inlet of the solvent input three-way valve, and two outlets of the solvent input three-way valve are respectively communicated with inlets of the first solvent pump solenoid valve and the second solvent pump solenoid valve.
In an alternative embodiment, the standard mother liquor conveying system comprises a mother liquor injection pump, a mother liquor pump electromagnetic valve and a mother liquor conveying valve, two outlets of the mother liquor pump electromagnetic valve are respectively communicated with the mother liquor injection pump and the mother liquor conveying valve, and an outlet of the digestion chamber and an outlet of the mother liquor conveying valve are respectively communicated with the standard liquor mixing valve.
In an alternative embodiment, the mother liquor injection pump comprises a third injection pump and a fourth injection pump, the mother liquor pump solenoid valve comprises a first mother liquor pump solenoid valve and a second mother liquor pump solenoid valve, one outlet of the first mother liquor pump solenoid valve is communicated with the third injection pump, one outlet of the second mother liquor pump solenoid valve is communicated with the fourth injection pump, the fourth injection pump has a larger volume than the third injection pump, the other outlets of the first mother liquor pump solenoid valve and the second mother liquor pump solenoid valve are communicated with the mother liquor conveying valve, and the third injection pump and the fourth injection pump are connected with the control system;
Preferably, the standard mother liquor conveying system further comprises a mother liquor input three-way valve and a mother liquor input electromagnetic valve, wherein an outlet of the mother liquor input electromagnetic valve is communicated with an inlet of the mother liquor input three-way valve, and two outlets of the mother liquor input three-way valve are respectively communicated with inlets of the first mother liquor pump electromagnetic valve and the second mother liquor pump electromagnetic valve.
In an optional embodiment, the scale matching detection and cleaning integrated heavy metal monitoring device further comprises a metal element standard solution storage tank, a pure water storage tank and a solvent storage tank, wherein the metal element standard solution storage tank is communicated with the mother liquor pump electromagnetic valve, the pure water storage tank is communicated with the backwashing pipe, and the solvent storage tank is communicated with the solvent pump electromagnetic valve.
In a second aspect, the invention provides a water quality detection system, which comprises a detection instrument and the matched standard detection and cleaning integrated heavy metal monitoring device according to any one of the previous embodiments, wherein an outlet of a quantitative ring of the detection article is communicated with an inlet of the detection instrument, and the detection instrument comprises an inductively coupled plasma mass spectrometer, an inductively coupled plasma emission spectrometer or an atomic absorption spectrometer.
The beneficial effects of the embodiment of the invention include, for example:
The label matching detection and cleaning integrated heavy metal monitoring equipment provided by the application can realize functions of automatic water collection, automatic sample filtering, automatic sample digestion, automatic online preparation of different concentration standard solutions required by a standard curve, and the like, and meets the requirement of full-automatic continuous operation online monitoring continuous sample injection of a plasma mass spectrometer. In the whole analysis process, the method is realized through automation, reduces operation errors such as manually processing samples, manually preparing standard solutions and the like, and ensures the precision and accuracy of data. The invention switches the pipeline by the state of the switching valve, adopts the vacuum pump to suck the water solution under negative pressure, and has the advantages of quick suction of the solution by the vacuum pump, stable pressure, avoiding metal pollution caused by the pump body, ensuring the detection accuracy, and simultaneously, the vacuum pump also has the function of back flushing the pipeline of the system, realizing the automatic cleaning of the pipeline of the system before the analysis of each sample is finished, and saving a great amount of time. The method and the device can detect various metal elements in water, and meanwhile, can realize online internal standard correction, and analyze the element content in water rapidly and accurately. The reagent used in the invention only comprises a metal element standard solution, water and a 2% nitric acid aqueous solution, so that the use of toxic and harmful chemical reagents such as masking agents, electroplating solutions and the like is avoided, and the harm to human bodies and the secondary pollution to the environment are extremely small. In addition, the application also provides a water quality detection system, and the mark matching detection and cleaning integrated heavy metal monitoring equipment has very high suitability and can be suitable for various detection instruments.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a label matching detection and cleaning integrated heavy metal monitoring device provided by the application;
fig. 2 is a schematic connection diagram of a second multi-channel valve in the label matching detection and cleaning integrated heavy metal monitoring device provided in the present application in a ten-way input state;
fig. 3 is a schematic connection diagram of a second multi-channel valve in the label matching detection and cleaning integrated heavy metal monitoring device provided by the application in a ten-way output state;
fig. 4 is a schematic connection diagram of a first multi-channel valve in the integrated heavy metal monitoring device for detecting and cleaning by matching labels provided in the present application in a six-way input state;
fig. 5 is a schematic connection diagram of a first multi-channel valve in the integrated heavy metal monitoring device for detecting and cleaning by matching labels provided in the present application in a six-way output state;
FIG. 6 is a flowchart of the process of preparing and testing the test product required by the standard curve preparing by the label preparing and testing and cleaning integrated heavy metal monitoring device provided by the application;
fig. 7 is a flowchart of a sample on-line detection and pipeline back flushing process performed by the label matching detection and cleaning integrated heavy metal monitoring device provided by the application.
Icon: 100-matching, detecting and cleaning integrated heavy metal monitoring equipment;
110-a sample quantification system; 111-a second multi-channel valve; 112-sample injection tube; 1121-a filter; 1122-filtration membrane; 113-a vacuum pump; 114-sample quantification ring; 115-a second raffinate withdrawal pipe; 116-backwashing the pipe; 1 a-ten holes are formed in the first hole; 2 a-ten-pass second hole site; 3 a-ten holes with a third hole site; 4 a-ten-pass fourth hole site; 5 a-ten holes with a fifth hole site; 6 a-ten holes with six holes; 7 a-ten holes of a seventh hole; 8 a-ten holes are formed in the eighth hole site; 9 a-ten-way nine hole sites; 10 a-ten-way hole site number ten;
120-a solvent delivery system; 121-solvent input solenoid valve; 122-solvent input three-way valve; 123-a solvent pump solenoid valve; 1231-a first solvent pump solenoid valve; 1232-a second solvent pump solenoid valve; 124-solvent syringe pump; 1241-a first syringe pump; 1242-a second syringe pump; 125-solvent delivery valve;
130-a standard mother liquor delivery system; 131-inputting mother liquor into a solenoid valve; 132-inputting mother liquor into a three-way valve; 133-a mother liquor pump solenoid valve; 1331-a first mother liquor pump solenoid valve; 1332-a second mother liquor pump solenoid valve; 134-mother liquor injection pump; 1341-third syringe pump; 1342-fourth syringe pump; 135—a mother liquor transfer valve;
140-digestion room;
150-a detection product quantifying system; 151-a standard liquid mixing valve; 152-a first multi-channel valve; 153-assay quantification ring; 154-a first raffinate withdrawal pipe; 1 b-six-way first hole site; 2 b-six-way second hole site; 3 b-six-way hole site number three; 4 b-six-way fourth hole site; 5 b-six-way five-hole site; 6 b-six-way six-number hole site;
160-internal standard tube; 161-adding a standard mixing valve; 162-peristaltic pump; 163-nitric acid tube.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Example 1
Referring to fig. 1, the present embodiment provides a label matching, detecting and cleaning integrated heavy metal monitoring apparatus 100, which includes a sample quantifying system 110, a solvent conveying system 120, a standard mother liquor conveying system 130, a digestion chamber 140, a detecting product quantifying system 150 and a control system (not shown).
The sample quantifying system 110 is used for quantitatively discharging the sample, so that the solvent can be conveniently added to prepare a sample to be tested, and then the sample is quantitatively discharged through the sample quantifying system 150.
Referring to fig. 1, 2 and 3 in combination, in the present application, the sample quantifying system 110 is provided with a second multi-channel valve 111, a sample introduction pipe 112, a vacuum pump 113, a sample quantifying ring 114, a second residual liquid discharge pipe 115, a pure water storage tank, and a back flushing pipe 116.
The sample inlet pipe 112, the vacuum pump 113, the sample quantifying ring 114, the second residual liquid outlet pipe 115 and the back flushing pipe 116 are all communicated with different hole sites of the second multi-channel valve 111; the second multi-channel valve 111 communicates with the solvent delivery system 120 and the control system controls the change in the position of the second multi-channel valve 111 to effect sample entry into the sample metering ring 114 and discharge from the sample metering ring 114 to the solvent delivery system 120.
Specifically, the second multi-channel valve 111 is a ten-way valve provided with a ten-way first hole site 1a, a ten-way second hole site 2a, a ten-way third hole site 3a, a ten-way fourth hole site 4a, a ten-way fifth hole site 5a, a ten-way sixth hole site 6a, a ten-way seventh hole site 7a, a ten-way eighth hole site 8a, a ten-way ninth hole site 9a, and a ten-way tenth hole site 10a; the second multi-channel valve 111 switches between a ten-way input state and a ten-way output state through a control system, when in the ten-way input state (as shown in fig. 2), a ten-way first hole site 1a is communicated with a ten-way second hole site 2a, a ten-way third hole site 3a is communicated with a ten-way fourth hole site 4a, a ten-way fifth hole site 5a is communicated with a ten-way sixth hole site 6a, a ten-way seventh hole site 7a is communicated with a ten-way eighth hole site 8a, and a ten-way ninth hole site 9a is communicated with a ten-way tenth hole site 10a; in a ten-way output state (as shown in fig. 3), the ten-way hole 10a is communicated with the ten-way first hole 1a, the ten-way second hole 2a is communicated with the ten-way third hole 3a, the ten-way fourth hole 4a is communicated with the ten-way fifth hole 5a, the ten-way sixth hole 6a is communicated with the ten-way seventh hole 7a, and the ten-way eighth hole 8a is communicated with the ten-way ninth hole 9 a.
The inlet pipe 112 is communicated with the ten-way first hole site 1a, a filter 1121 is arranged at the inlet end of the inlet pipe 112, and a filter membrane 1122 is arranged in the filter 1121. The filter membrane 1122 in this embodiment may have various specifications, for example, a filter membrane 1122 of 0.45-20 microns, and the filter membrane 1122 in this embodiment has a high filtering capability, and can remove most of the particulate impurities in the water body, and can be repeatedly used by cleaning through an automatic pipeline, and meanwhile, the filter membrane 1122 material substrate pollutes the polar region, so that the secondary pollution to the water body is avoided. The inlet and outlet of the sample quantifying ring 114 are respectively communicated with the tenth through second hole site 2a and the tenth through fifth hole site 5a, the inlet and outlet of the vacuum pump 113 are respectively communicated with the tenth through sixth hole site 6a and the tenth through tenth hole site 10a, and the second residual liquid discharge pipe 115 is communicated with the tenth through ninth hole site 9 a; the outlet of the back flushing pipe 116 is communicated with a ten-way hole 7a, and the pure water storage tank is communicated with the inlet of the back flushing pipe 116.
Because vacuum pump 113 and ten-way No. six hole site 6a communicate in this application, ten-way No. six hole site 6a communicates with ten-way No. five hole site 5a again in the input state, the import and the export of sample ration ring 114 are respectively with ten-way No. two hole sites 2a and ten-way No. five hole site 5a communicate, because ten-way No. 1a and ten-way No. two hole site 2a are the intercommunication, therefore, vacuum pump 113 can realize negative pressure absorption with sample ration ring 114 and sampling tube 112, the sample is advanced through the realization of advance filtration of sampling tube 112, consequently, the sample can get into through sample tube 112, ten-way No. 1a, ten-way No. two hole site 2a, sample ration ring 114, ten-way No. five hole site 5a and ten-way No. six hole site 6a in proper order, wherein, the sample is quantitative in sample ration ring 114, and unnecessary sample gets into vacuum pump 113 from ten-way No. 10a of ten-way No. six hole site 6a, and is discharged from ten-way No. 10a of vacuum pump 113, finally, realize accurate quantitative sample discharge through the second discharge tube 115 with ten-way No. 9a intercommunication.
Referring back to fig. 1, the solvent delivery system 120 includes a solvent storage tank (not shown), a solvent input solenoid valve 121, a solvent input three-way valve 122, a solvent pump solenoid valve 123, a solvent injection pump 124 and a solvent delivery valve 125, wherein a 2% aqueous solution of nitric acid is stored in the solvent storage tank, the solvent is input from the solvent input solenoid valve 121, the outlet of the solvent input solenoid valve 121 is communicated with the inlet of the solvent input three-way valve 122, the outlet of the solvent input three-way valve 122 is communicated with the inlet of the solvent pump solenoid valve 123, one outlet of the solvent pump solenoid valve 123 is communicated with the inlet of the solvent injection pump 124, and the solvent injection pump 124 can quantitatively discharge the solvent from the other outlet of the solvent pump solenoid valve 123 to the solvent delivery valve 125. In this application, the discharge port of the solvent injection pump 124 communicates with the tenth through third hole site 3a, and the tenth through fourth hole site 4a communicates with the solvent delivery valve 125. In this application, the solvent injection pump 124 includes a first injection pump 1241 and a second injection pump 1242, the solvent pump solenoid valve 123 includes a first solvent pump solenoid valve 1231 and a second solvent pump solenoid valve 1232, an outlet of the first solvent pump solenoid valve 1231 is communicated with the first injection pump 1241, an outlet of the second solvent pump solenoid valve 1232 is communicated with the second injection pump 1242, a volume of the second injection pump 1242 is larger than that of the first injection pump 1241, wherein a discharge port of the second solvent pump solenoid valve 1232 and the second injection pump 1242 is communicated with the tenth-pass No. three hole site 3a, outlets of the first solvent pump solenoid valve 1231 and the first injection pump 1241 and the second injection pump 1242 of the tenth-pass No. four hole site 4a are all communicated with the solvent delivery valve 125, and the first injection pump 1241 and the second injection pump 1242 are all connected with the control system. The two outlets of the solvent input three-way valve 122 are respectively in communication with the inlets of the first syringe pump 1241 and the second syringe pump 1242 of the first solvent pump solenoid valve 1231 and the second solvent pump solenoid valve 1232. Through setting up the syringe pump of two different volumes in this application, realize solvent large capacity input and high accuracy input, guarantee that finally get into solvent delivery valve 125's solvent can be according to predetermineeing the volume and export, in addition, in this application, can adjust the pump speed of first syringe pump 1241 and second syringe pump 1242 through control system to realize quantitative output solvent.
The standard mother liquor delivery system 130 includes a metal element standard solution storage tank (not shown), a mother liquor input solenoid valve 131, a mother liquor input three-way valve 132, a mother liquor pump solenoid valve 133, a mother liquor injection pump 134 and a mother liquor delivery valve 135, wherein the metal element standard solution storage tank stores metal element standard solution mother liquor, the metal element standard solution storage tank is communicated with the mother liquor input solenoid valve 131, the mother liquor injection pump 134 includes a third injection pump 1341 and a fourth injection pump 1342, the mother liquor pump solenoid valve 133 includes a first mother liquor pump solenoid valve 1331 and a second mother liquor pump solenoid valve 1332, one outlet of the first mother liquor pump solenoid valve 1331 is communicated with the third injection pump 1341, one outlet of the second mother liquor pump solenoid valve 1332 is communicated with the fourth injection pump 1342, the fourth injection pump 1342 has a volume larger than that of the third injection pump 1341, inlets of the third injection pump 1341 and the fourth injection pump 1342 are all communicated with the input 131, the first mother liquor pump 1331 and the second mother liquor pump solenoid valve 1332 are all communicated with the other outlet of the fourth injection pump 1342, and the fourth injection pump 1342 are all connected with the fourth injection pump 1341. In this application, through setting up the syringe pump of two different volumes, realize solvent large capacity input and high accuracy input, guarantee that the final mother liquor that gets into mother liquor delivery valve 135 can be according to predetermineeing the volume and export, in addition, in this application, can adjust the pump speed of third syringe pump 1341 and fourth syringe pump 1342 through control system to realize quantitative output mother liquor.
The detection product quantifying system 150 is used for quantifying the standard solution when the standard solution is prepared, and simultaneously, quantifying the to-be-detected product after the sample and the solvent are mixed when the subsequent sample is detected.
Referring to fig. 1, fig. 4 and fig. 5 in combination, in the present application, the sample quantifying system 150 includes a sample mixing valve 151, a first multi-channel valve 152, a sample quantifying ring 153 and a first residual liquid discharging tube 154, where the sample mixing valve 151, the sample quantifying ring 153 and the first residual liquid discharging tube 154 are all in communication with different hole sites of the first multi-channel valve 152. The control system controls the change of the connection state of the hole position of the first multi-channel valve 152 to realize the injection and discharge of the liquid in the standard liquid mixing valve 151 into the quantitative ring 153 of the detection product.
Specifically, in this embodiment, the first multi-channel valve 152 is a six-way valve, where the six-way valve is provided with a six-way first hole site 1b, a six-way second hole site 2b, a six-way third hole site 3b, a six-way fourth hole site 4b, a six-way fifth hole site 5b, and a six-way sixth hole site 6b, and the first multi-channel valve 152 switches between a six-way input state and a six-way output state through the control system, and when in the six-way input state (as shown in fig. 4), the six-way first hole site 1b is communicated with the six-way second hole site 2b, the six-way third hole site 3b is communicated with the six-way fourth hole site 4b, and the six-way fifth hole site 5b is communicated with the six-way sixth hole site 6 b; in a six-way output state (as shown in fig. 5), the six-way six-hole site 6b is communicated with the six-way first-hole site 1b, the six-way second-hole site 2b is communicated with the six-way third-hole site 3b, and the six-way fourth-hole site 4b is communicated with the six-way fifth-hole site 5 b; the outlet of the standard liquid mixing valve 151 is communicated with a six-way hole site 5b, the inlet of the detection product quantifying ring 153 is communicated with a six-way hole site 6b, the outlet of the detection product quantifying ring 153 is communicated with a six-way hole site 3b, and the first residual liquid discharge pipe 154 is communicated with a six-way hole site 4 b.
In addition, in the present application, the mark detection and cleaning integrated heavy metal monitoring device 100 further includes an internal standard pipe 160 and a mark adding mixing valve 161, where the internal standard pipe 160 and the six-way second hole site 2b are respectively communicated with two inlets of the mark adding mixing valve 161, and an outlet of the mark adding mixing valve 161 is used for connecting with an atomizer. The internal standard tube 160 and the standard adding mixing valve 161 can be used for adding an internal standard to a to-be-detected product, and online internal standard correction is realized, so that the element content in water can be analyzed quickly and accurately.
Next, the present embodiment will describe in detail the preparation and detection process of the test sample, the on-line detection process of the sample, and the process of the pipeline back flushing required for preparing the standard curve by using the above-described label-matching detection-cleaning integrated heavy metal monitoring apparatus 100.
(1) And (3) preparing and detecting the to-be-detected product required by preparing the standard curve.
Referring to fig. 1 and 6, the control system controls ICP-MS ignition and performs automatic compounding of the standard curve. The flow paths of all the solenoid valves (the solvent input solenoid valve 121, the mother liquor input solenoid valve 131, the first solvent pump solenoid valve 1231, the second solvent pump solenoid valve 1232, the first mother liquor pump solenoid valve 1331, the second mother liquor pump solenoid valve 1332) are switched to the right, the second multi-channel valve 111 is switched to the ten-way input state, and the first multi-channel valve 152 is switched to the six-way input state. The first syringe pump 1241 and the second syringe pump 1242 draw a set volume of the nitric acid diluent, the nitric acid diluent enters from a normally open port below the solvent input solenoid valve 121, flows out from an outlet on the right side of the solvent input solenoid valve 121, and enters the first syringe pump 1241 and the second syringe pump 1242 from an inlet on the right side of the first solvent pump solenoid valve 1231 and an inlet on the right side of the second solvent pump solenoid valve 1232, respectively, after passing through the solvent input three-way valve 122. Meanwhile, the mother solution of the standard solution enters from a normally open port below the mother solution input electromagnetic valve 131, flows out from an outlet on the right side of the mother solution input electromagnetic valve 131, and enters the third syringe pump 1341 and the fourth syringe pump 1342 from an inlet on the right side of the first mother solution pump electromagnetic valve 1331 and an inlet on the right side of the second mother solution pump electromagnetic valve 1332 after passing through the mother solution input three-way valve 132.
The flow paths of the first solvent pump solenoid valve 1231, the second solvent pump solenoid valve 1232, the first mother liquor pump solenoid valve 1331, and the second mother liquor pump solenoid valve 1332 are switched to the left. The first syringe pump 1241 pushes the solution out of the left outlet of the first solvent pump solenoid valve 1231, the second syringe pump 1242 pushes the solution out of the left outlet of the second solvent pump solenoid valve 1232 into the tenth-through third-hole 3a of the second multi-channel valve 111, and the solution is pushed out through the tenth-through fourth-hole 4a, and the solution is mixed with the nitric acid diluent flowing out of the left outlet of the first solvent pump solenoid valve 1231 in the solvent delivery valve 125, and flows out into the digestion chamber 140. The third syringe pump 1341 and the fourth syringe pump 1342 push the standard solution mother liquid out of the left outlet of the first mother liquid pump solenoid valve 1331 and the left outlet of the second mother liquid pump solenoid valve 1332, mix the standard solution mother liquid in the mother liquid delivery valve 135, enter the standard solution mixing valve 151, and mix the digested nitric acid diluted solution in the standard solution mixing valve 151. The speed of pushing the solution by each injection pump is set, so that the nitric acid diluent and the standard solution mother solution are mixed according to the set speed, and different pump speeds are set to prepare standard solutions with different concentrations. Standard solution mixed by the standard solution mixing valve 151 and having a certain concentration enters the six-way five-hole site 5b of the first multi-channel valve 152, flows into the quantitative ring 153 of the detection product from the six-way five-hole site, and the redundant standard solution enters the six-way four-hole site 4b through the six-way three-hole site 3b and flows out through the first residual liquid discharge pipe 154.
The first multi-channel valve 152 is switched to a six-way output state, and the nitric acid solution in the nitric acid tube 163 pumped by the peristaltic pump 162 enters the six-way hole site 6b from the six-way one-way hole site 1b of the first multi-channel valve 152, so that the standard solution in the quantitative ring 153 of the detection product is pushed out from the six-way two-way hole site 2 b. The standard solution flowing out of the six-way second hole site 2b is uniformly mixed with the internal standard solution in the internal standard tube 160 pumped by the peristaltic pump 162 in the standard adding mixing valve 161, atomized in the atomizer and enters the mass spectrum analyzer for detection and analysis. And after the analysis is finished, automatically uploading the data result. In this application, the nitric acid solution pumped by the peristaltic pump 162 is mainly used for pushing out the solution in the quantitative ring 153 of the detection product, so that the quantitative detection product and the subsequent internal standard solution are convenient to mix, and meanwhile, the nitric acid solution pushes out the standard solution, so that the quantitative ring 153 of the detection product can be cleaned.
(2) And (5) sample on-line detection process.
In the embodiment, after a standard curve is drawn, the qualitative and quantitative determination of the heavy metal elements in the sample can be performed.
Specifically, referring to fig. 1 and 7, in the sample in-line detection process, the flow paths of all the solenoid valves (the solvent input solenoid valve 121, the mother liquor input solenoid valve 131, the first solvent pump solenoid valve 1231, the second solvent pump solenoid valve 1232, the first mother liquor pump solenoid valve 1331, and the second mother liquor pump solenoid valve 1332) are switched to the right, the second multi-channel valve 111 is switched to the ten-way input state, and the first multi-channel valve 152 is switched to the six-way input state.
The vacuum pump 113 is started, the water sample is filtered through the filter membrane 1122 in the filter 1121, then enters the first hole site 1a of the second multi-channel valve 111 after filtration, flows into the sample quantifying ring 114 from the second hole site 2a of the second multi-channel valve, flows from the fifth hole site 5a of the tenth hole site to the sixth hole site 6a of the tenth hole site to enter the vacuum pump 113, enters the tenth hole site 10a of the second multi-channel valve 111 from the liquid outlet pipe of the vacuum pump 113, and the redundant sample is discharged from the ninth hole site 9a of the tenth hole site, so that quantitative input of the sample is realized and stored in the sample quantifying ring 114.
The vacuum pump 113 is turned off and the second multi-channel valve 111 is switched to a ten-way output state. The first syringe pump 1241 and the second syringe pump 1242 respectively absorb the nitric acid diluent with set volumes, the nitric acid diluent enters from a normally open port below the first syringe pump 1241, flows out from an outlet on the right side of the solvent input solenoid valve 121, and enters the first syringe pump 1241 and the second syringe pump 1242 from an inlet on the right side of the first solvent pump solenoid valve 1231 and an inlet on the right side of the second solvent pump solenoid valve 1232 after passing through the solvent input three-way valve 122. The flow paths of the first solvent pump solenoid valve 1231 and the second solvent pump solenoid valve 1232 are switched to the left. The nitric acid solution in the second syringe pump 1242 enters the tenth through third hole site 3a of the second multi-channel valve 111 from the left outlet of the second solvent pump solenoid valve 1232, and pushes out the sample in the sample metering ring 114 from the tenth through fifth hole site 5a via the tenth through second hole site 2 a. The sample solution flows out through the tenth through hole site 4a, is mixed with the nitric acid diluent flowing out from the left outlet of the first solvent pump electromagnetic valve 1231 in the solvent delivery valve 125, and flows out into the digestion chamber 140. The sample solution is added with trace nitric acid solution in the solvent conveying valve 125, flows out of the digestion chamber 140, enters the six-way five-hole site 5b of the first multi-channel valve 152, flows into the quantitative ring of the to-be-detected sample from the six-way six-hole site 6b, and the redundant sample enters the six-way four-hole site 4b through the six-way three-hole site 3b and flows out through the first residual liquid discharge pipe 154.
The first multi-channel valve 152 is switched to a six-way output state, and the nitric acid solution pumped by the peristaltic pump 162 enters the six-way hole site 6b from the six-way first hole site 1b of the first multi-channel valve 152, so that the standard solution in the quantitative ring 153 of the detection product is pushed out from the six-way second hole site 2 b. The standard solution flowing out of the six-way second hole site 2b is uniformly mixed with the internal standard solution in the internal standard tube 160 pumped by the peristaltic pump 162 in the standard adding mixing valve 161, atomized in the atomizer and enters the mass spectrum analyzer for detection and analysis. And after the analysis is finished, automatically uploading the data result.
(3) Pipeline back flushing process
After the second multi-channel valve 111 is switched to a ten-way output state, the vacuum pump 113 and the injection pump are started simultaneously, the water solution in the pure water storage tank is sucked from the ten-way seventh hole site 7a of the second multi-channel valve 111, flows from the ten-way seventh hole site 7a to the ten-way sixth hole site 6a to enter the vacuum pump 113, flows from a liquid outlet pipe of the vacuum pump 113 to the ten-way tenth hole site 10a of the second multi-channel valve 111, flows to the ten-way first hole site 1a, and finally flows out of the filter 1121, so that a back flushing pipeline and the filter 1121 are realized. That is, the back flush in this application is mainly directed to this section of pipeline that the sample pipe advances, and the back flush can wash out the impurity that piles up on the filter screen of filter 1121, guarantees stability and the filter effect of feeding.
In addition, in this application, a portion of the nitric acid solution may be sucked by the second syringe pump 1242, so that the nitric acid solution is discharged from the left side of the second solvent pump electromagnetic valve 1232 to the tenth through No. three hole site 3a of the second multi-channel valve 111, at this time, since the second multi-channel valve 111 is still in the tenth through output state, the tenth through No. three hole site 3a is communicated with the tenth through No. two hole site 2a, the nitric acid solution enters the sample quantifying ring 114 to flush the sample quantifying ring 114, and is then discharged from the tenth through No. five hole site 5a, and is discharged into the solvent delivery valve 125 through the tenth through No. four hole site 4a communicated with the tenth through No. five hole site 5a, the nitric acid in the solvent delivery valve 125 may further pass through the digestion chamber 140, and enter the sixth through No. five hole site 5b of the first multi-channel valve 152, at this time, the first multi-channel valve 152 is in the output state, the sixth through No. five hole site 5b is communicated with the sixth through No. four hole site 4b, and finally discharged from the first residual liquid discharge pipe 154. Since the sample in the sample quantifying ring 153 is pushed out by the nitric acid solution and is also equivalent to a single cleaning, the sample quantifying ring does not need to be cleaned when the sample quantifying ring is cleaned by the nitric acid solution sucked by the second syringe pump 1242.
The label matching detection and cleaning integrated heavy metal monitoring equipment 100 provided by the application can realize functions of automatic water collection, automatic sample filtering, automatic sample digestion, automatic online preparation of different concentration standard solutions required by a standard curve, and the like, and meets the requirement of full-automatic continuous operation online monitoring continuous sample injection of a plasma mass spectrometer. In the whole analysis process, the method is realized through automation, reduces operation errors such as manually processing samples, manually preparing standard solutions and the like, and ensures the precision and accuracy of data. The invention switches the pipeline by the state of the switching valve, adopts the vacuum pump 113 to suck the water solution under negative pressure, the vacuum pump 113 sucks the solution rapidly, the pressure is stable, the metal pollution caused by the pump body is avoided, the detection accuracy is ensured, and the vacuum pump 113 also has the function of back flushing the system pipeline, so that the automatic cleaning of the system pipeline is realized before the analysis of each sample is finished, and a great amount of time is saved. The method and the device can detect various metal elements in water, and meanwhile, can realize online internal standard correction, and analyze the element content in water rapidly and accurately. The reagent used in the invention only comprises a metal element standard solution, water and a 2% nitric acid aqueous solution, so that the use of toxic and harmful chemical reagents such as masking agents, electroplating solutions and the like is avoided, and the harm to human bodies and the secondary pollution to the environment are extremely small.
In addition, the application also provides a water quality detection system, which comprises a detection instrument and the above-mentioned mark matching detection and cleaning integrated heavy metal monitoring equipment 100, wherein the outlet of the detection article quantifying ring 153 is communicated with the inlet of the detection instrument, and the detection instrument comprises an inductively coupled plasma mass spectrometer, an inductively coupled plasma emission spectrometer or an atomic absorption spectrometer. The label matching detection and cleaning integrated heavy metal monitoring equipment 100 has high suitability and can be suitable for various detection instruments.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The integrated heavy metal monitoring equipment for label matching detection and cleaning is characterized by comprising a detection product quantifying system, a sample quantifying system, a solvent conveying system, a standard mother liquor conveying system, a digestion room and a control system; the detection article quantifying system comprises a standard liquid mixing valve, a first multi-channel valve and a detection article quantifying ring, wherein the standard liquid mixing valve and the detection article quantifying ring are communicated with different hole sites of the first multi-channel valve;
The sample quantifying system is provided with a second multichannel valve, a sample inlet pipe, a vacuum pump, a sample quantifying ring and a back flushing pipe, wherein the sample inlet pipe, the vacuum pump, the sample quantifying ring and the back flushing pipe are communicated with different hole sites of the second multichannel valve;
the second multi-channel valve is communicated with the solvent conveying system, the solvent conveying system is communicated with the digestion chamber, the digestion chamber and the standard mother liquor conveying system are simultaneously communicated with an inlet of the standard liquid mixing valve, the control system controls the hole site connection state of the first multi-channel valve to change so as to realize that liquid in the standard liquid mixing valve is injected into and discharged from the quantitative ring of the detection product, and the control system controls the hole site connection state of the second multi-channel valve to change so as to realize that a sample enters the quantitative ring of the sample and is discharged from the quantitative ring of the sample to the solvent conveying system.
2. The mark matching detection and cleaning integrated heavy metal monitoring device according to claim 1, wherein the first multi-channel valve is a six-way valve, the six-way valve is provided with a six-way first hole site, a six-way second hole site, a six-way third hole site, a six-way fourth hole site, a six-way fifth hole site and a six-way sixth hole site, the first multi-channel valve switches between a six-way input state and a six-way output state through the control system, and when the six-way valve is in the six-way input state, the six-way first hole site is communicated with the six-way second hole site, the six-way third hole site is communicated with the six-way fourth hole site, and the six-way fifth hole site is communicated with the six-way sixth hole site; when the six-way output state is adopted, the six-way six-hole site is communicated with the six-way first-hole site, the six-way second-hole site is communicated with the six-way third-hole site, and the six-way fourth-hole site is communicated with the six-way fifth-hole site; the outlet of the standard liquid mixing valve is communicated with the six-way hole site No. five, the inlet of the detection product quantitative ring is communicated with the six-way hole site No. six, and the outlet of the detection product quantitative ring is communicated with the six-way hole site No. three;
Preferably, the quantitative detection product system further comprises a first residual liquid discharge pipe, and the first residual liquid discharge pipe is communicated with the six-way fourth hole site.
3. The mark matching detection and cleaning integrated heavy metal monitoring device according to claim 2, further comprising an inner mark pipe and a mark adding mixing valve, wherein the inner mark pipe and the six-way second-size hole are respectively communicated with two inlets of the mark adding mixing valve, and an outlet of the mark adding mixing valve is used for being connected with an atomizer.
4. The mark matching detection and cleaning integrated heavy metal monitoring device according to claim 1, wherein the second multi-channel valve is a ten-way valve, and the ten-way valve is provided with a ten-way first hole site, a ten-way second hole site, a ten-way third hole site, a ten-way fourth hole site, a ten-way fifth hole site, a ten-way sixth hole site, a ten-way seventh hole site, a ten-way eighth hole site, a ten-way ninth hole site and a ten-way tenth hole site; the second multi-channel valve is used for switching a ten-way input state and a ten-way output state through the control system, when the valve is in the ten-way input state, the first ten-way hole site is communicated with the second ten-way hole site, the third ten-way hole site is communicated with the fourth ten-way hole site, the fifth ten-way hole site is communicated with the sixth ten-way hole site, the seventh ten-way hole site is communicated with the eighth ten-way hole site, and the ninth ten-way hole site is communicated with the tenth ten-way hole site; when the ten-way output state is adopted, the ten-way hole site is communicated with the ten-way first hole site, the ten-way second hole site is communicated with the ten-way third hole site, the ten-way fourth hole site is communicated with the ten-way fifth hole site, the ten-way sixth hole site is communicated with the ten-way seventh hole site, and the ten-way eighth hole site is communicated with the ten-way ninth hole site; the sample injection pipe is communicated with the tenth-pass first hole site, the inlet and the outlet of the sample quantifying ring are respectively communicated with the tenth-pass second hole site and the tenth-pass fifth hole site, the inlet and the outlet of the vacuum pump are respectively communicated with the tenth-pass sixth hole site and the tenth-pass tenth hole site, and the back flushing pipe is communicated with the tenth-pass seventh hole site;
Preferably, the sample quantifying system further comprises a second residual liquid discharge pipe, which is communicated with the tenth through ninth hole site;
preferably, a filter is arranged at the inlet end of the sample injection tube, and a filter membrane is arranged in the filter.
5. The mark matching detection and cleaning integrated heavy metal monitoring device according to claim 4, wherein the solvent conveying system comprises a solvent injection pump, a solvent pump electromagnetic valve and a solvent conveying valve, two outlets of the solvent pump electromagnetic valve are respectively communicated with the solvent injection pump and the ten-way third hole site, the ten-way fourth hole site is communicated with the solvent conveying valve, and an outlet of the solvent conveying valve is communicated with an inlet of the digestion room.
6. The integrated label matching detection and cleaning heavy metal monitoring device according to claim 5, wherein the solvent injection pump comprises a first injection pump and a second injection pump, the solvent pump electromagnetic valve comprises a first solvent pump electromagnetic valve and a second solvent pump electromagnetic valve, one outlet of the first solvent pump electromagnetic valve is communicated with the first injection pump, one outlet of the second solvent pump electromagnetic valve is communicated with the second injection pump, the second injection pump has a larger volume than the first injection pump, the other outlets of the first solvent pump electromagnetic valve and the second solvent pump electromagnetic valve are communicated with the solvent delivery valve, and the first injection pump and the second injection pump are connected with the control system;
Preferably, the solvent delivery system further comprises a solvent input three-way valve and a solvent input solenoid valve, wherein an outlet of the solvent input solenoid valve is communicated with an inlet of the solvent input three-way valve, and two outlets of the solvent input three-way valve are respectively communicated with inlets of the first solvent pump solenoid valve and the second solvent pump solenoid valve.
7. The mark matching detection and cleaning integrated heavy metal monitoring device according to claim 6, wherein the standard mother liquor conveying system comprises a mother liquor injection pump, a mother liquor pump electromagnetic valve and a mother liquor conveying valve, two outlets of the mother liquor pump electromagnetic valve are respectively communicated with the mother liquor injection pump and the mother liquor conveying valve, and an outlet of the digestion chamber and an outlet of the mother liquor conveying valve are both communicated with the mark liquor mixing valve.
8. The integrated scale detection and cleaning heavy metal monitoring device according to claim 7, wherein the mother liquor injection pump comprises a third injection pump and a fourth injection pump, the mother liquor pump electromagnetic valve comprises a first mother liquor pump electromagnetic valve and a second mother liquor pump electromagnetic valve, one outlet of the first mother liquor pump electromagnetic valve is communicated with the third injection pump, one outlet of the second mother liquor pump electromagnetic valve is communicated with the fourth injection pump, the fourth injection pump has a larger volume than the third injection pump, the other outlets of the first mother liquor pump electromagnetic valve and the second mother liquor pump electromagnetic valve are both communicated with the mother liquor conveying valve, and the third injection pump and the fourth injection pump are both connected with the control system;
Preferably, the standard mother liquor conveying system further comprises a mother liquor input three-way valve and a mother liquor input electromagnetic valve, wherein an outlet of the mother liquor input electromagnetic valve is communicated with an inlet of the mother liquor input three-way valve, and two outlets of the mother liquor input three-way valve are respectively communicated with inlets of the first mother liquor pump electromagnetic valve and the second mother liquor pump electromagnetic valve.
9. The mark matching detection and cleaning integrated heavy metal monitoring device according to claim 8, further comprising a metal element standard solution storage tank, a pure water storage tank and a solvent storage tank, wherein the metal element standard solution storage tank is communicated with the mother liquor pump electromagnetic valve, the pure water storage tank is communicated with the backwash pipe, and the solvent storage tank is communicated with the solvent pump electromagnetic valve.
10. A water quality detection system, characterized in that the system comprises a detection instrument and the label matching detection and cleaning integrated heavy metal monitoring equipment as claimed in any one of claims 1-9, wherein an outlet of a quantitative ring of the detection product is communicated with an inlet of the detection instrument, and the detection instrument comprises an inductively coupled plasma mass spectrometer, an inductively coupled plasma emission spectrometer or an atomic absorption spectrometer.
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| CN202211699029.4A CN116026911A (en) | 2022-12-28 | 2022-12-28 | Join in marriage mark and detect washing integration heavy metal monitoring facilities and water quality testing system |
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| CN202211699029.4A CN116026911A (en) | 2022-12-28 | 2022-12-28 | Join in marriage mark and detect washing integration heavy metal monitoring facilities and water quality testing system |
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