CN115931451B - Sampling analysis unit suitable for surface water monitoring - Google Patents
Sampling analysis unit suitable for surface water monitoring Download PDFInfo
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- CN115931451B CN115931451B CN202310229661.0A CN202310229661A CN115931451B CN 115931451 B CN115931451 B CN 115931451B CN 202310229661 A CN202310229661 A CN 202310229661A CN 115931451 B CN115931451 B CN 115931451B
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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
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- 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 relates to a sampling analysis unit suitable for surface water monitoring, belonging to the technical field of water quality monitoring; the multi-way selector valve comprises a public port and a plurality of communication ports, wherein the public port is connected with a first interface of a first three-way valve, a second interface of the first three-way valve is connected with a first interface of a second three-way valve through a sample injection pipeline, a third interface of the first three-way valve is connected with a second interface of the second three-way valve through a sample discharge pipeline, a low-level defoaming sensing assembly, a high-level defoaming sensing assembly and a peristaltic pump are sequentially connected with a third interface of the second three-way valve, an outlet of the peristaltic pump is connected into an overflow liquid collecting barrel, one communication port of the multi-way selector valve is connected with an inlet of a measuring assembly, an outlet of the measuring assembly is connected to the overflow liquid collecting barrel through a pipeline, and high-temperature high-pressure valve assemblies are respectively arranged at the front end and the rear end of the measuring assembly; the problems of poor detection precision and long detection period of the existing low-concentration sample are solved.
Description
Technical Field
The invention belongs to the technical field of water quality monitoring, and particularly relates to a sampling analysis unit suitable for surface water monitoring.
Background
The water quality monitoring is a process for monitoring and measuring the types of pollutants in a water body, the concentration and the change trend of various pollutants and evaluating the water quality condition. The monitoring range is very wide, including uncontaminated and contaminated natural waters (rivers, lakes, seas and groundwater) and various industrial drains, etc. Major monitoring projects can be divided into two main categories: one is a comprehensive index reflecting water quality conditions, such as temperature, chromaticity, turbidity, pH value, conductivity, suspended matters, dissolved oxygen, chemical oxygen demand, biochemical oxygen demand and the like; the other is some toxic substances such as phenol, cyanogen, copper, arsenic, lead, nickel, chromium, cadmium, mercury, organic pesticides, etc. In order to objectively evaluate the water quality of rivers and oceans, it is sometimes necessary to measure the flow rate and the flow quantity in addition to the above-mentioned monitoring items.
When the concentration indexes of copper, lead, nickel, chromium and other elements in water quality are monitored, spectrophotometry is used for detection, and spectrophotometry is a method for qualitatively and quantitatively analyzing a detected substance by measuring the light absorption degree of the substance at a specific wavelength or within a certain wavelength range. The existing monitor for monitoring water quality by a spectrophotometry only can select a specific wavelength range and a specific optical path to detect the concentration of a specific index in detection liquid, and can not detect various indexes at the same time.
In addition, the existing surface water monitoring equipment cannot judge the type of water quality in advance, so that the concentration and the liquid inlet ratio of the reagent are not matched with the water sample, the accuracy of a water quality detection result is poor, the concentration and the liquid inlet ratio of the reagent are required to be readjusted, the whole detection period is prolonged, and the detection efficiency is reduced.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides a sampling analysis unit suitable for monitoring surface water; the problems of poor detection precision and long detection period of the existing low-concentration sample are solved.
In order to achieve the above purpose, the present invention is realized by the following technical scheme.
The utility model provides a sampling analysis unit suitable for surface water monitoring, including the multichannel selection valve, the multichannel selection valve includes a public mouth and a plurality of intercommunication mouth, the public mouth of multichannel selection valve is connected with the first interface of first three-way valve, the second interface of first three-way valve is connected with the first interface of second three-way valve through the sampling pipeline, the third interface of first three-way valve is connected with the second interface of second three-way valve through the drain pipeline, the entry of the low defoaming sensing subassembly of the third interface of second three-way valve is connected, the export of low defoaming sensing subassembly is connected with the entry of high defoaming sensing subassembly, the export of high defoaming sensing subassembly is connected with the entry of peristaltic pump, the exit linkage of peristaltic pump is in the overflow liquid collecting vat, one of them intercommunication mouth of multichannel selection valve is connected with the entry of measuring subassembly, the export of measuring subassembly is connected to the overflow liquid collecting vat through the pipeline, be provided with a high temperature high pressure valve assembly respectively on the pipeline at both ends around the measuring subassembly.
Further, each communication port of the multi-way selector valve is distributed with a solenoid valve, and whether the common port is communicated with the communication port or not is selected by opening and closing the solenoid valve.
Further, among the remaining communication ports of the multi-port selector valve, a plurality of communication ports are connected with corresponding reagent bottles through pipelines, one communication port is communicated with a waste liquid barrel through a pipeline, and the other communication port is connected with a distilled water bottle through a pipeline.
Further, the low-level defoaming sensing assembly comprises an external tool, a glass tube, a low-level liquid level metering device and a substance wave cross detection device; the glass tube is fixed in the external tool; the low-level liquid level metering device is fixed in the external tool and used for detecting the liquid level of a water sample in the glass tube; the substance wave cross detection device is characterized in that the laser light source and the spectrometer are connected with the inside of the water sample through optical fibers, the laser light source emits laser to the inside of the water sample through the optical fibers, ions in the water excite the substance wave under the action of the laser, the substance wave is detected by the spectrometer through the optical fibers, and the spectrometer sends detected information to the PLC through an electric signal.
Further, the high-order defoaming sensing assembly comprises an external tool, a glass tube, a high-order liquid level metering device and a substance wave cross detection device; the glass tube is fixed in the external tool; the high-level liquid level metering device is fixed inside an external tool and detects the liquid level of a water sample inside the glass tube.
Further, the measuring assembly comprises a fixed frame, a heating pipe is arranged in the fixed frame, adjusting plates are arranged on two sides of the heating pipe, a light source generator and a reflecting lens are arranged on the adjusting plate on one side, and a reflecting lens and a light source receiver are arranged on the adjusting plate on the other side.
Further, the upper end and the lower end of the fixing frame are respectively provided with a liquid outlet pipe joint and a liquid inlet pipe joint, the lower inlet of the heating pipe is connected with the liquid inlet pipe joint, the upper end outlet of the heating pipe is connected with the liquid outlet pipe joint, the outer side of the heating pipe is wound with a heating resistance wire, and a temperature sensor is further arranged on the heating pipe.
Further, two side walls of the fixing frame are symmetrically provided with square holes respectively, each square hole is internally provided with an adjusting plate correspondingly, the two adjusting plates are respectively provided with a light source emitter, a second reflecting mirror plate and a fourth reflecting mirror plate … …, namely a first reflecting mirror plate and a third reflecting mirror plate … … light source receiver in an up-down arrangement mode on the end face of the opposite side, light beams emitted by the light source emitters pass through the heating pipe and then sequentially pass through the first reflecting mirror plate and the second reflecting mirror plate to be reflected and then are received by the light source receiver, and the light sources pass through the heating pipe after each reflection; each light source emitter is provided with a plurality of light sources, and the plurality of light sources can emit simultaneously and are all received by the light source receiver after being reflected by the first reflecting mirror plate, the second reflecting mirror plate, the third reflecting mirror plate and the fourth reflecting mirror plate … ….
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the sampling analysis unit suitable for surface water monitoring, provided by the invention, the light sources with various wavelengths are arranged in the light source emitter, so that elements which are not mutually interfered by detection reagents can be detected simultaneously, concentration values of various indexes can be obtained simultaneously, the adaptability is greatly improved, the cost for arranging other monitors is reduced, and the monitoring efficiency is improved.
(2) According to the sampling analysis unit suitable for surface water monitoring, the optical path extension mechanism is arranged on the measurement assembly, so that the light source emitted by the light source emitter can be continuously reflected through the plurality of groups of reflection lenses, the optical path of the light source is improved, the light source with the prolonged optical path is received by the light source receiver, the detection resolution is improved, and the detection precision of a low-concentration sample is improved.
(3) The sampling analysis unit suitable for surface water monitoring provided by the invention has the advantages that the substance wave principle utilizes the fact that the natural frequencies of substances are different, the water quality type can be indirectly reflected, so that the water quality type can be judged in advance, the analyzer can select proper reagent concentration and liquid inlet proportion, the measurement efficiency is improved, the minimum measurement period is met, and the sampling analysis unit is suitable for most water quality test sites.
Drawings
The invention is described in further detail below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of the overall principle of the present invention;
FIG. 2 is a schematic diagram of the structures of a first sampling plate and a second sampling plate;
FIG. 3 is a schematic diagram of the structure of a low-order defoaming sensing assembly;
FIG. 4 is a schematic diagram of a matter wave cross detection device;
FIG. 5 is a schematic perspective view of a measurement assembly;
FIG. 6 is a front view of the measurement assembly;
FIG. 7 is a front cross-sectional view of the measurement assembly;
the device comprises a first sampling plate 37, a second sampling plate 38, a multi-way selection valve 39, a five-way valve 40, a first three-way valve 41, a second three-way valve 42, a low-position defoaming sensing assembly 43, a high-position defoaming sensing assembly 44, a peristaltic pump 45, a measuring assembly 46, a high-temperature high-pressure valve assembly 47, a sample feeding pipeline 48, a sample discharging pipeline 49, an external tool 50, a glass tube 51, a fixed frame 53, a liquid inlet pipe joint 54, a liquid outlet pipe joint 55, a heating pipe 56, a heating resistance wire 57, a temperature sensor 58, a regulating plate 59, a light source emitter 60, a first reflecting lens 61, a second reflecting lens 62 and a light source receiver 63.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail by combining the embodiments and the drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. The following describes the technical scheme of the present invention in detail with reference to examples and drawings, but the scope of protection is not limited thereto.
As shown in fig. 1-7, the invention provides a sampling analysis unit suitable for monitoring surface water, which comprises a cabinet, wherein the interior of the cabinet is divided into an upper space and a lower space by a horizontal partition plate, a reagent bottle, a water sample bottle, a waste liquid barrel and a distilled water bottle are arranged in the lower space, a first sampling plate 37 and a second sampling plate 38 are arranged in the upper space, a five-way valve 40, a multi-way selection valve 39, two three-way valves and two defoaming sensing assemblies are fixedly arranged on the first sampling plate 37, and a measuring assembly 46, a transmitting and receiving device, a peristaltic pump 45 and two high-temperature high-pressure valve assemblies 47 are fixedly arranged on the second sampling plate 38.
The multi-way selector valve 39 includes a common port and a plurality of communication ports, each of which is provided with a solenoid valve, and selects whether the common port communicates with the communication ports by opening and closing the solenoid valve. The five-way valve 40 comprises a main interface and five tapping ports, the five tapping ports are respectively connected with corresponding water sample bottles through pipelines, an electromagnetic valve is arranged on each pipeline, collection of five water samples is achieved through alternate opening and closing of the electromagnetic valves, the main interface is connected with one of the communication ports of the multi-way selector valve 39 through the pipelines, and collected water samples enter the multi-way selector valve 39. Among the remaining communication ports of the multi-way selector valve 39, a plurality of communication ports are connected with corresponding reagent bottles through pipes, one communication port is connected with a waste liquid tank through a pipe, one communication port is connected with a distilled water bottle through a pipe, one communication port is connected with an inlet of the measuring assembly 46 through a pipe, an outlet of the measuring assembly 46 is connected to an overflow liquid collecting tank through a pipe, a high-temperature and high-pressure valve assembly 47 is respectively arranged on the pipes at the front and rear ends of the measuring assembly 46, and the two high-temperature and high-pressure valve assemblies 47 provide high-pressure environments for the measuring assembly 46.
The two three-way valves are a first three-way valve 41 and a second three-way valve 42 respectively, the two defoaming sensing assemblies are a low-order defoaming sensing assembly 43 and a high-order defoaming sensing assembly 44 respectively, and the low-order defoaming sensing assembly 43 and the high-order defoaming sensing assembly 44 are connected in series front and back. The first port of the first three-way valve 41 is connected with the common port of the multi-way selector valve 39 through a pipeline, the second port of the first three-way valve 41 is connected with the first port of the second three-way valve 42 through a sample injection pipeline 48, the third port of the first three-way valve 41 is connected with the second port of the second three-way valve 42 through a sample discharge pipeline 49, the third port of the second three-way valve 42 is connected with the inlet of the low-position defoaming sensor assembly 43 through a pipeline, the outlet of the defoaming sensor assembly is connected with the inlet of the high-position defoaming sensor assembly 44 through a pipeline, the outlet of the high-position defoaming sensor assembly 44 is connected with the inlet of the peristaltic pump 45 through a pipeline, and the outlet of the peristaltic pump 45 is connected into the overflow liquid collecting barrel through a pipeline.
The low-level defoaming sensing assembly 43 comprises an external tool 50, a glass tube 51, a low-level liquid level metering device and a substance wave cross detection device; the glass tube 51 is fixed in the external tool 50; the low-level liquid level metering device is fixed in the outer tool 50 and detects the liquid level of the water sample in the glass tube 51; the substance wave cross detection device is characterized in that the laser light source and the spectrometer are connected with the inside of the water sample through optical fibers, the laser light source emits laser to the inside of the water sample through the optical fibers, ions in the water excite the substance wave under the action of the laser, the substance wave is detected by the spectrometer through the optical fibers, and the spectrometer sends detected information to the PLC through an electric signal. Each substance has own natural frequency, under the excitation action of a full-spectrum laser light source, the amplified natural frequency of the substance can be sensed by a frequency measuring device spectrometer, after photoelectric conversion, an electric signal is transmitted to a PLC, the surface water and sewage quality is totally divided into 5 categories, different categories correspond to the substance contents with different concentrations, the water quality category can be judged in advance through the description of the principle, and the analysis efficiency and accuracy are improved by selecting a proper measuring range.
The high-level defoaming sensing assembly 44 comprises an external tool 50, a glass tube 51, a high-level liquid level metering device and a substance wave cross detection device; the glass tube 51 is fixed in the external tool 50; the high-level liquid level metering device is fixed inside the external tool 50 and detects the liquid level of the water sample inside the glass tube 51.
The low-level liquid level metering device and the high-level liquid level metering device both comprise an infrared light emitter and an infrared light receiver, when the detection liquid passes through the glass tube 51, light is refracted, the received signals change, and the effect of liquid level detection is achieved through PLC signal processing.
The measuring assembly 46 includes a square fixing frame 53, and a liquid outlet pipe joint 55 and a liquid inlet pipe joint 54 are respectively disposed at the upper end and the lower end of the fixing frame 53. A heating pipe 56 is arranged in the fixing frame 53, the lower inlet of the heating pipe 56 is connected with a liquid inlet pipe joint 54, the upper outlet of the heating pipe 56 is connected with a liquid outlet pipe joint 55, the detection liquid is input into the heating pipe 56 through the liquid inlet pipe joint 54, and the detection liquid is output outwards through the liquid outlet pipe joint 55. A heating resistance wire 57 is wound around the outside of the heating pipe 56, the detection liquid inside the heating pipe 56 is heated by the heating resistance wire 57, a temperature sensor 58 is further provided on the heating pipe 56, and the temperature of the detection liquid inside the heating pipe 56 is measured by the temperature sensor 58.
A square hole is symmetrically arranged on the side walls of the two sides of the fixed frame 53, and two threaded holes are symmetrically arranged on the two sides of each square hole. Each square hole is correspondingly provided with an adjusting plate 59, two adjusting plates 59 are respectively arranged up and down on the end faces of one opposite side, a light source emitter 60, a second reflecting mirror 62, a first reflecting mirror 61 and a light source receiver 63 are respectively arranged, the light source emitter 60 and the second reflecting mirror 62 extend into the fixed frame 53 from the square hole on one side, the first reflecting mirror 61 and the light source receiver 63 extend into the fixed frame 53 from the square hole on the other side, the light source emitter 60 and the first reflecting mirror 61 are horizontally arranged correspondingly, the second reflecting mirror 62 and the light source receiver 63 are horizontally arranged correspondingly, and a light beam emitted by the light source emitter 60 passes through the heating pipe 56 and then is received by the light source receiver 63 after being reflected by the first reflecting mirror 61 and the second reflecting mirror 62 in sequence, and the light source passes through the heating pipe 56 after being reflected each time.
Specifically, a vertical oblong hole is respectively provided on the left and right sides of each adjusting plate 59, two bolts are inserted into each oblong hole, and the bolts penetrate through the oblong holes of the adjusting plates 59 and are screwed with threaded holes on the side walls of the fixed frames 53, so that the adjusting plates 59 are fixed on the fixed frames 53. The height of the adjusting plate 59 can be adjusted by adjusting the position of the bolt in the oblong hole, so that the heights of the light source emitter 60, the second reflecting mirror 62, the first reflecting mirror 61 and the light source receiver 63 in the fixing frame 53 are adjusted, and the light source emitter 60 and the first reflecting mirror 61 are ensured to be horizontally arranged correspondingly, and the second reflecting mirror 62 and the light source receiver 63 are ensured to be horizontally arranged correspondingly.
Specifically, a plurality of light sources are disposed in each light source emitter 60, and the plurality of light sources can be emitted simultaneously, and all of the light sources are received by the light source receiver 63 after being reflected by the first reflecting mirror 61 and the second reflecting mirror 62.
Specifically, multiple groups of reflection mirrors may be disposed on the two adjustment plates 59, that is, a light source emitter 60, a second reflection mirror 62, and a fourth reflection mirror are disposed on one adjustment plate 59, a first reflection mirror 61, a third reflection mirror, and a light source receiver 63 are disposed on the other adjustment plate 59, and the emitted light source is received by the light source receiver 63 after being reflected by the four reflection mirrors.
The working principle of the invention is as follows:
during detection, the controller controls one of the sub-ports of the five-way valve 40 to be communicated with the main port, controls the common port of the multi-way selector valve 39 to be communicated with the communication port of the water sample, controls the first port of the first three-way valve 41 to be communicated with the second port, and controls the first port of the second three-way valve 42 to be communicated with the third port.
Then the peristaltic pump 45 is controlled to rotate forward, the peristaltic pump 45 generates power, and the water sample sequentially passes through the public port of the multi-way selector valve 39, the first three-way valve 41, the sample injection pipeline 48 and the second three-way valve 42 and sequentially enters the low-position defoaming sensing assembly 43.
Inside the high-order defoaming sensing assembly 44, the glass tube 51 inside the low-order defoaming sensing assembly 43 and the high-order defoaming sensing assembly 44 is changed due to the inner diameter, so that the detection liquid entering the inside of the glass tube is eliminated by bubbles due to the abrupt change of the tube diameter, the purpose of defoaming is achieved, and the bubbles are eliminated to ensure that the detection liquid uniformly reaches the middle position of the glass tube 51, and the interference to subsequent detection is reduced.
The multi-order substance wave cross correlation detection device carried by the low-order defoaming sensing assembly 43 is used for detecting water sample signals, information of wave band detection after influence digestion contained in water is transmitted to a signal board for signal processing, equipment automatically selects a preset process flow for analysis, analysis results are corrected through water sample components, and the detection results are more accurate and real. When the water sample enters the low-order defoaming sensing assembly 43 from the bottom, the water characteristic components are judged by utilizing the absorption principle of different substances on light with specific wavelength, and after the front end processing information of the circuit board is detected, the water sample information is transmitted to the PLC for correcting the analyzed data. Thus, the specific type of the water sample entering the defoaming sensing assembly can be known, and the corresponding reagent concentration and the corresponding liquid inlet proportion are selected.
The liquid level value set by the sampling analysis unit is divided into a high liquid level and a low liquid level, the low liquid level is detected and determined by a low liquid level metering device inside the low defoaming sensing assembly 43, and the high liquid level is detected and determined by a high liquid level metering device inside the high defoaming sensing assembly 44.
After the type of water sample detects, when the water sample of high liquid level is needed, pump into low level defoaming sensing assembly 43 and high level defoaming sensing assembly 44 inside in proper order with the water pump through peristaltic pump 45 forward rotation, low level defoaming sensing assembly 43 and high level defoaming sensing assembly 44 inside glass pipe 51 is because the internal diameter changes for get into its inside detection liquid and eliminate the bubble because the pipe diameter mutation, reach the purpose of defoaming, the bubble eliminates and guarantees that detection liquid evenly reaches glass pipe 51 middle part position reduction and causes the interference to follow-up detection. When the high liquid level value is reached, the high liquid level metering device detects an in-place signal, the common port of the multi-way selector valve 39 is controlled to be connected with the communication port of the reagent, the peristaltic pump 45 rotates, the reagent is pumped into the low defoaming sensing assembly 43 and the high defoaming sensing assembly 44, and the water sample and the reagent are mixed to form detection liquid.
When a water sample with a low liquid level is needed, the peristaltic pump 45 is rotated forward to pump the water pump into the low-level defoaming sensing assembly 43, and the inner diameter of the glass tube 51 inside the low-level defoaming sensing assembly 43 changes, so that the detection liquid entering the low-level defoaming sensing assembly eliminates bubbles due to the abrupt change of the tube diameter, the purpose of defoaming is achieved, and the bubble elimination ensures that the detection liquid uniformly reaches the middle position of the glass tube 51 to reduce interference to subsequent detection. When the low liquid level value is reached, the low liquid level metering device detects an in-place signal, the common port of the multi-way selector valve 39 is controlled to be connected with the communication port of the reagent, the peristaltic pump 45 rotates, the reagent is pumped into the low defoaming sensing assembly 43, and the water sample and the reagent are mixed to form detection liquid.
After the reagent and the water sample are mixed, the common port of the multi-way selector valve 39 is controlled to be communicated with the corresponding communication port of the measuring assembly 46, the peristaltic pump 45 starts to reversely rotate, the detection liquid in the defoaming sensing assembly is pumped into the measuring assembly 46 through the multi-way selector valve 39, the detection liquid reacts at a high temperature in the heating pipe 56, the detection liquid is irradiated through the light source emitter 60 and is received through the light source receiver 63, the concentration value of the appointed parameter in the detection liquid is detected, and the detected information is transmitted outwards through the transmitting and receiving device.
The liquid level value set by the sampling analysis unit is divided into a high liquid level and a low liquid level, the low liquid level is detected and determined by a low liquid level metering device inside the low defoaming sensing assembly 43, and the high liquid level is detected and determined by a high liquid level metering device inside the high defoaming sensing assembly 44. The first three-way valve 41 and the second three-way valve 42 are matched with each other to realize sample injection of detection liquid with lower liquid level, specifically, when the low liquid level metering device detects low liquid level, detection liquid exists in the sample injection pipeline 48, at the moment, the first interface and the third interface of the first three-way valve 41 are communicated, the second interface and the third interface of the second three-way valve 42 are communicated, the peristaltic pump 45 reversely rotates to discharge the detection liquid from the low-level defoaming sensing assembly 43, and at the moment, only the detection liquid remains in the sample injection pipeline 48. When the detection liquid is completely discharged, the first interface of the second three-way valve 42 is communicated with the third interface again, the first interface of the first three-way valve 41 is communicated with the third interface again, the peristaltic pump 45 rotates positively, and the residual detection liquid in the sample injection pipeline 48 is pumped into the low-level defoaming sensing assembly 43 again, so that the sample injection of the detection liquid with lower liquid level is realized.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. A sampling analysis unit suitable for surface water monitoring, characterized in that: the system comprises a multi-way selector valve (39), wherein the multi-way selector valve (39) comprises a public port and a plurality of communication ports, the public port of the multi-way selector valve (39) is connected with a first port of a first three-way valve (41), a second port of the first three-way valve (41) is connected with a first port of a second three-way valve (42) through a sample injection pipeline (48), a third port of the first three-way valve (41) is connected with a second port of the second three-way valve (42) through a sample discharge pipeline (49), the third port of the second three-way valve (42) is connected with an inlet of a low-level defoaming sensing assembly (43), an outlet of the low-level defoaming sensing assembly (43) is connected with an inlet of a high-level defoaming sensing assembly (44), an outlet of the high-level defoaming sensing assembly (44) is connected with an inlet of a peristaltic pump (45), an outlet of the pump (45) is connected into a collecting barrel of the peristaltic liquid, one of the communication ports of the multi-way selector valve (39) is connected with an inlet of a measuring assembly (46) through a sample discharge pipeline (49), and the outlet of the measuring assembly (46) is connected to two ends of the peristaltic liquid collecting barrels (47) respectively arranged at the two ends of the high-pressure collecting assembly (47);
the low-level defoaming sensing assembly (43) comprises a first external tool, a first glass tube, a low-level liquid level metering device and a substance wave cross detection device; the first glass tube is fixed in the first external tool; the low-level liquid level measuring device is fixed in the first external tool and used for detecting the liquid level of the water sample in the first glass tube; the substance wave cross detection device comprises a laser light source and a spectrometer, wherein the laser light source and the spectrometer are connected with the inside of a water sample through optical fibers, the laser light source emits laser to the inside of the water sample through the optical fibers, ions in the water excite substance waves under the action of the laser, the substance waves are detected by the spectrometer through the optical fibers, and the spectrometer sends detected information to the PLC through an electric signal;
the high-level defoaming sensing assembly (44) comprises a second external tool, a second glass tube, a high-level liquid level metering device and a substance wave cross detection device; the second glass tube is fixed in the second external tool; the high-level liquid level measuring device is fixed inside the second external tool and used for detecting the liquid level of the water sample inside the second glass tube.
2. A sampling analysis unit suitable for surface water monitoring according to claim 1, wherein: and each communication port of the multi-way selector valve (39) is distributed with a solenoid valve, and whether the common port is communicated with the communication port or not is selected by opening and closing the solenoid valve.
3. A sampling analysis unit suitable for surface water monitoring according to claim 1, wherein: the five-way valve (40) comprises a main interface and five tapping ports, the five tapping ports are respectively connected with corresponding water sample bottles through pipelines, an electromagnetic valve is arranged on each pipeline, collection of five water samples is achieved through alternate opening and closing of the electromagnetic valves, and the main interface is connected with one of the communication ports of the multi-way selector valve (39) through the pipelines.
4. A sampling analysis unit suitable for surface water monitoring according to claim 3, wherein: among the remaining communication ports of the multi-way selector valve (39), a plurality of communication ports are connected with corresponding reagent bottles through pipelines, one communication port is communicated with a waste liquid barrel through a pipeline, and the other communication port is connected with a distilled water bottle through a pipeline.
5. A sampling analysis unit suitable for surface water monitoring according to claim 1, wherein: the measuring assembly (46) comprises a fixed frame (53), a heating pipe (56) is arranged in the fixed frame (53), adjusting plates (59) are arranged on two sides of the heating pipe (56), a light source generator and a reflecting lens are arranged on one adjusting plate (59) on one side, and a reflecting lens and a light source receiver (63) are arranged on the adjusting plate (59) on the other side.
6. A sampling analysis unit suitable for surface water monitoring as claimed in claim 5 wherein: the upper end and the lower extreme of fixed frame (53) are provided with a play liquid coupling (55) and a feed liquor coupling (54) respectively, and the lower part entry of heating pipe (56) is connected with feed liquor coupling (54), and the upper end export of heating pipe (56) is connected with play liquid coupling (55), and the outside winding of heating pipe (56) is provided with heating resistance wire (57), still is provided with temperature sensor (58) on heating pipe (56).
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004226371A (en) * | 2003-01-27 | 2004-08-12 | Dkk Toa Corp | Sample water analyzing unit and sample water analyzing device |
| CN103785314A (en) * | 2014-03-04 | 2014-05-14 | 厦门大学 | Mixer and circulating type photometric testing automatic analyzer |
| CN109916833A (en) * | 2019-04-10 | 2019-06-21 | 江苏聚聪环境技术有限公司 | Multi-parameter water quality detector |
| CN209961769U (en) * | 2019-09-24 | 2020-01-17 | 赛默飞世尔（上海）仪器有限公司 | Water quality analyzer and water quality on-line monitoring system |
| CN111220559A (en) * | 2020-03-23 | 2020-06-02 | 杭州罗盘星科技有限公司 | Pipeline type full-spectrum water quality detection device and method thereof |
| CN211453341U (en) * | 2019-12-27 | 2020-09-08 | 广东翰洋环测信息科技有限公司 | Water quality on-line analysis device |
| CN111999280A (en) * | 2020-08-18 | 2020-11-27 | 呼和浩特市环境科学研究所 | Need not surface water heavy metal real-time detection system of sample |
| CN112816430A (en) * | 2021-01-28 | 2021-05-18 | 深圳安志生态环境有限公司 | Water body environment monitoring method and device |
| CN215004953U (en) * | 2021-02-08 | 2021-12-03 | 杭州帆昂环保科技有限公司 | Multi-parameter automatic water quality analysis system |
| CN114323897A (en) * | 2021-12-15 | 2022-04-12 | 四川久环环境技术有限责任公司 | Water quality monitoring dilutes and adds mark device based on photoelectric sensor |
| TWM629247U (en) * | 2022-04-07 | 2022-07-01 | 福春企業股份有限公司 | water quality analyzer |
| CN216926225U (en) * | 2022-06-02 | 2022-07-08 | 长沙华时捷环保科技发展股份有限公司 | Quantitative sampling device and water quality monitoring equipment |
| CN115326734A (en) * | 2022-10-10 | 2022-11-11 | 中绿环保科技股份有限公司 | Water quality multi-parameter online monitor |
| CN115436353A (en) * | 2022-08-31 | 2022-12-06 | 上海博取仪器有限公司 | High-low concentration real-time switching analyzer colorimetric system and using method thereof |
-
2023
- 2023-03-10 CN CN202310229661.0A patent/CN115931451B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004226371A (en) * | 2003-01-27 | 2004-08-12 | Dkk Toa Corp | Sample water analyzing unit and sample water analyzing device |
| CN103785314A (en) * | 2014-03-04 | 2014-05-14 | 厦门大学 | Mixer and circulating type photometric testing automatic analyzer |
| CN109916833A (en) * | 2019-04-10 | 2019-06-21 | 江苏聚聪环境技术有限公司 | Multi-parameter water quality detector |
| CN209961769U (en) * | 2019-09-24 | 2020-01-17 | 赛默飞世尔（上海）仪器有限公司 | Water quality analyzer and water quality on-line monitoring system |
| CN211453341U (en) * | 2019-12-27 | 2020-09-08 | 广东翰洋环测信息科技有限公司 | Water quality on-line analysis device |
| CN111220559A (en) * | 2020-03-23 | 2020-06-02 | 杭州罗盘星科技有限公司 | Pipeline type full-spectrum water quality detection device and method thereof |
| CN111999280A (en) * | 2020-08-18 | 2020-11-27 | 呼和浩特市环境科学研究所 | Need not surface water heavy metal real-time detection system of sample |
| CN112816430A (en) * | 2021-01-28 | 2021-05-18 | 深圳安志生态环境有限公司 | Water body environment monitoring method and device |
| CN215004953U (en) * | 2021-02-08 | 2021-12-03 | 杭州帆昂环保科技有限公司 | Multi-parameter automatic water quality analysis system |
| CN114323897A (en) * | 2021-12-15 | 2022-04-12 | 四川久环环境技术有限责任公司 | Water quality monitoring dilutes and adds mark device based on photoelectric sensor |
| TWM629247U (en) * | 2022-04-07 | 2022-07-01 | 福春企業股份有限公司 | water quality analyzer |
| CN216926225U (en) * | 2022-06-02 | 2022-07-08 | 长沙华时捷环保科技发展股份有限公司 | Quantitative sampling device and water quality monitoring equipment |
| CN115436353A (en) * | 2022-08-31 | 2022-12-06 | 上海博取仪器有限公司 | High-low concentration real-time switching analyzer colorimetric system and using method thereof |
| CN115326734A (en) * | 2022-10-10 | 2022-11-11 | 中绿环保科技股份有限公司 | Water quality multi-parameter online monitor |
Non-Patent Citations (1)
| Title |
|---|
| 分光光度法在水质在线监测领域应用进展;周琪 等;现代仪器与医疗;第19卷(第3期);第21-24页 * |
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