CN212483001U - On-line automatic sample introduction device for detecting anions and cations in water - Google Patents
On-line automatic sample introduction device for detecting anions and cations in water Download PDFInfo
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- CN212483001U CN212483001U CN202020557240.2U CN202020557240U CN212483001U CN 212483001 U CN212483001 U CN 212483001U CN 202020557240 U CN202020557240 U CN 202020557240U CN 212483001 U CN212483001 U CN 212483001U
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Abstract
The utility model relates to an online autoinjection device for aquatic zwitterion detects, purify the filter unit and autoinjection and cleaning unit including the water sample. The water sample purifying and filtering unit contains coarse filter, fine filter, multistage purifier and the liquid sampling pump that concatenates along advancing the appearance direction, autoinjection and cleaning unit include three way connection, three way solenoid valve and the peristaltic pump that connects gradually along advancing the appearance direction, two links of three way connection are connected with liquid sampling pump and three way solenoid valve respectively, two links of three way solenoid valve are connected with three way connection and peristaltic pump respectively, and three way solenoid valve's third link is connected with pure water bottle, the peristaltic pump is connected with ion chromatogram introduction port or scavenging system. The utility model discloses can realize advancing the appearance in succession online for a long time, accomplish steps such as water sample collection and self-cleaning voluntarily, obtain real-time, accurate monitoring data, improve the precision and the accuracy that entire system detected greatly.
Description
Technical Field
The utility model relates to an online autoinjection device for aquatic zwitterion detects belongs to water quality testing technical field.
Background
In recent years, with the rapid development of industry and agriculture, a large amount of production and domestic sewage, garbage, industrial wastewater and other substances continuously enter water, so that the condition that water quality in various places is polluted is increasingly serious, and great threat is brought to the environment and human health. The excessive anions and cations in water can not only harm the health of animals and plants in the environment, but also harm the health of human bodies, thereby causing various diseases. Therefore, monitoring and researching the anions and cations in water is widely concerned by the majority of scientific researchers. The traditional method for detecting anions and cations in water comprises an ICP (plasma emission spectrometer) method, an electrophoresis method and the like, but the methods have large interference, poor stability and sensitivity and complex operation.
At present, the national environmental protection agency of the United states and departments such as national sanitation and environment adopt laboratory ion chromatography to monitor and research anions and cations in water. As an advanced technology, the ion chromatography has the advantages of good resolution, high sensitivity, high working efficiency and the like, and is widely applied to various analysis fields. Inorganic ions F in water as specified by the united states national environmental protection agency (u.s.epa)-、Cl-、Br-、NO-2、NO-3、PO3 -4And SO2 -4Can be detected by ion chromatography, and F can be detected in water by the departments of sanitation, environmental protection and the like in China-、Cl-、NO-2、NO-3、SO2 -4Most of the detection results are relatively ideal when measured by ion chromatography. The use of ion chromatography has thus been widely developed.
At present, the method for detecting anions and cations in water mostly adopts a field sampling method and a laboratory offline manual sample analysis method, the whole process needs manual participation, such as manual sampling, lofting and the like, and the method cannot meet the field continuous monitoring of water pollution, and particularly can be used for dealing with emergency; and because of artificial error, influence the precision of experimental data, lead to the accuracy of testing result to receive the influence.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an online autoinjection device for aquatic zwitterion detects is provided, can realize advancing the appearance in succession for a long time, obtains real-time, accurate monitoring data.
In order to solve the above problem, the utility model discloses a technical scheme as follows:
an on-line automatic sample introduction device for detecting anions and cations in water comprises a water sample purifying and filtering unit and an automatic sample introduction and cleaning unit,
the water sample purifying and filtering unit comprises a coarse filter, a fine filter, a multi-stage purifying device and a liquid sampling pump which are sequentially connected in series along the sample introduction direction,
autoinjection and cleaning unit include three way connection, three way solenoid valve and the peristaltic pump that connects gradually along the appearance direction of advance, two links of three way connection are connected with liquid sampling pump and three way solenoid valve respectively, two links of three way solenoid valve are connected with three way connection and peristaltic pump respectively, and three way solenoid valve's third link is connected with pure water bottle, the peristaltic pump is connected with ion chromatography introduction port or sweeping entrapment system.
The automatic sample introduction and cleaning unit further comprises a waste water bottle, and the waste water bottle is connected with a third connecting end of the three-way connector.
Further, the multistage purification device is a five-stage filter element.
Preferably, the number of the coarse filter and the fine filter is one.
Preferably, the coarse filter is used for filtering particles with a particle size of 100 microns or more, and the fine filter is used for filtering particles with a particle size of 30 microns or more.
The working principle of the utility model is that under the control of time sequence, the process of on-line filtration and on-line purification can be automatically completed. The automatic sample introduction and cleaning unit is controlled by a three-way electromagnetic valve to clean the pipeline through the filtered water sample or switching purified water inlet, and then the pipeline is pumped into an ion chromatography sample bottle through a peristaltic pump to perform next operation according to time sequence. The liquid sampling pump has good sealing performance, can work uninterruptedly for a long time, and ensures continuous supply of water samples. The coarse filter, the fine filter and the multi-stage purification device mainly remove particles, organic matters and other harmful substances in water, and then can be supplied to ion chromatography for direct sample injection analysis, so that columns are not polluted, and the system can be ensured to continuously and normally work on line.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model discloses can realize advancing the appearance in succession online for a long time, accomplish steps such as water sample collection and self-cleaning voluntarily, can obtain real-time, accurate monitoring data, improve the precision and the accuracy that entire system detected greatly, avoid traditional equipment artifical participation and cause the inaccuracy of testing result. The pollution condition and important pollutants of a water source can be analyzed according to the monitored data, and further data support can be provided for government regulatory departments to make treatment policies.
2. The utility model discloses an autoinjection and cleaning unit can also collect the water of intaking through the waste water bottle, realizes the storage to advancing the water of intaking through the waste water bottle when the system does not need the sampling.
3. The utility model discloses simple structure, precision are high, and the entire system of being convenient for is integrated, is fit for carrying out the coupling with ion chromatogram.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments. The objects, aspects and advantages of the present invention will become more apparent from the following description. It should be understood that the described embodiments are presently preferred, but not all embodiments of the invention.
Referring to fig. 1, an on-line automatic sample introduction device for detecting anions and cations in water comprises a water sample purification and filtration unit and an automatic sample introduction and cleaning unit.
The water sample purifying and filtering unit comprises a coarse filter 1, a fine filter 2, a multi-stage purifying device 3 and a liquid sampling pump 4 which are sequentially connected in series along the sample introduction direction. Preferably, the coarse filter 1 is used for filtering particulate matters with the particle size of more than 100 microns, and the fine filter 2 is used for filtering particulate matters with the particle size of more than 30 microns; the multi-stage purification device 3 is a five-stage filter element, so that the water quality can reach the RO level standard, and organic matters in water can be purified.
Autoinjection and cleaning unit include three way connection 5, three way solenoid valve 6 and the peristaltic pump 7 that connect gradually along advancing the appearance direction, two links of three way connection 5 are connected with liquid sampling pump 4 and three way solenoid valve 6 respectively, two links of three way solenoid valve 6 are connected with three way connection 5 and peristaltic pump 7 respectively, and three way solenoid valve 6's third link is connected with pure water bottle 8, peristaltic pump 7 is connected with ion chromatography introduction port or sweeping the entrapment system.
The working principle of the on-line automatic sample feeding device for detecting the anions and the cations in the water is that the processes of on-line filtration and on-line purification can be automatically completed under the control of time sequence. The water source is extracted by a liquid sampling pump 4, passes through a coarse filter 1, a fine filter 2 and a multistage purification device 3, is connected with a three-way electromagnetic valve 6 by a three-way joint 5, and can switch the water sample and the purified water in the water source according to time sequence by the three-way electromagnetic valve 6, thereby realizing the functions of sample introduction and pipeline cleaning, extracting a certain amount of liquid into an ion chromatography sample bottle by a peristaltic pump 7, and carrying out the next operation according to the time sequence. The peristaltic pump 7 can carry out accurate ration to the water sample, can adjust the volume of advance kind water volume size as required.
Preferably, the automatic sample feeding and cleaning unit further comprises a waste water bottle 9, and the waste water bottle 9 is connected with the third connecting end of the three-way joint 5. The water sample can be through three way connection to waste water bottle 9, when the system need not sample the time through waste water bottle 9 realization to advancing the storage of appearance water.
The utility model discloses simple structure, precision are high, and the entire system of being convenient for is integrated, is fit for carrying out the coupling with ion chromatogram.
The above description is only for the purpose of illustration of the preferred embodiments of the present invention, and it is not intended to limit the scope of the present invention, and it is obvious that any person skilled in the art can easily conceive of alterations and modifications to obtain other embodiments based on the above embodiments, and these should be covered by the scope of the present invention.
Claims (5)
1. The utility model provides an online autoinjection device for aquatic zwitterion detects which characterized in that: it comprises a water sample purifying and filtering unit and an automatic sample feeding and cleaning unit,
the water sample purifying and filtering unit comprises a coarse filter, a fine filter, a multi-stage purifying device and a liquid sampling pump which are sequentially connected in series along the sample introduction direction,
the automatic sample feeding and cleaning unit comprises a three-way joint, a three-way electromagnetic valve and a peristaltic pump which are sequentially connected along the sample feeding direction, two connecting ends of the three-way joint are respectively connected with the liquid sampling pump and the three-way electromagnetic valve, two connecting ends of the three-way electromagnetic valve are respectively connected with the three-way joint and the peristaltic pump, a third connecting end of the three-way electromagnetic valve is connected with the purified water bottle,
the peristaltic pump is connected with an ion chromatography sample inlet or a purging and trapping system.
2. The on-line automatic sample introduction device for detecting the anions and the cations in water according to claim 1, which is characterized in that:
the automatic sample introduction and cleaning unit further comprises a waste water bottle, and the waste water bottle is connected with the third connecting end of the three-way connector.
3. The on-line automatic sample introduction device for detecting the anions and the cations in water according to claim 1, which is characterized in that:
the multi-stage purification device is a five-stage filter element.
4. The on-line automatic sample introduction device for detecting the anions and the cations in water according to claim 1, which is characterized in that:
the number of the coarse filter and the fine filter is one.
5. The on-line automatic sample introduction device for detecting the anions and the cations in water according to claim 1, which is characterized in that:
the coarse filter is used for filtering particles with the particle size of more than 100 microns, and the fine filter is used for filtering particles with the particle size of more than 30 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020557240.2U CN212483001U (en) | 2020-04-15 | 2020-04-15 | On-line automatic sample introduction device for detecting anions and cations in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020557240.2U CN212483001U (en) | 2020-04-15 | 2020-04-15 | On-line automatic sample introduction device for detecting anions and cations in water |
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| Publication Number | Publication Date |
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| CN212483001U true CN212483001U (en) | 2021-02-05 |
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| CN202020557240.2U Active CN212483001U (en) | 2020-04-15 | 2020-04-15 | On-line automatic sample introduction device for detecting anions and cations in water |
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