CN110987585A - Water quality analyzer and analysis method for water quality analyzer - Google Patents
Water quality analyzer and analysis method for water quality analyzer Download PDFInfo
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- CN110987585A CN110987585A CN201911331450.8A CN201911331450A CN110987585A CN 110987585 A CN110987585 A CN 110987585A CN 201911331450 A CN201911331450 A CN 201911331450A CN 110987585 A CN110987585 A CN 110987585A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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Abstract
The invention discloses a water quality analyzer, comprising: a mixing apparatus comprising at least one mixing tank; a first flow path that transports a standard in a standard bottle to the mixing tank; the second flow path is used for conveying the water sample in the water sample bottle to the mixing pool; a third flow path including a plurality of third flow paths, each of the third flow paths being configured to transfer the reagent in a corresponding reagent bottle to the mixing well; metering modules for quantifying the fluid are arranged among the first flow path, the second flow path, the third flow path and the mixing pool; the detection module is communicated with the mixing pool and is used for digesting and detecting the mixed liquid after mixing; and the controller is electrically connected with the detection module and each metering module. The invention has the advantages of short sample introduction time and high sample introduction efficiency.
Description
Technical Field
The invention relates to the field of water quality monitoring, in particular to a water quality analyzer and an analysis method for the water quality analyzer.
Background
The water quality on-line monitor is widely applied to monitoring the water quality of surface water, domestic drinking water and sewage and is used as an important basis for water environment evaluation. The performance of the monitoring instrument directly influences the monitoring data, and whether the monitoring data is accurate or not can be an important factor influencing the public confidence. In order to ensure the effective tracing of the on-line monitoring instrument, the national measurement department promulgates a series of verification rules for tracing the value of the on-line monitoring instrument and periodically verifying the value of the on-line monitoring instrument so as to ensure the accuracy and reliability of the measurement, such as the verification rules of automatic analyzers for various parameters such as ammonia nitrogen, total phosphorus, Chemical Oxygen Demand (COD), heavy metals and the like (beginning of JJG). Most of water quality analyzers in the prior art adopt a sample distribution sampling mode of a multi-way valve and a mixing tank, a reagent and a water sample are conveyed to the mixing tank through the multi-way valve one by one, the multi-way valve is easy to block, the sampling time of the sampling mode is long, and the sampling efficiency is low.
Disclosure of Invention
The invention aims to provide a water quality analyzer with short sample introduction time and high sample introduction efficiency and an analysis method for the water quality analyzer.
In order to solve the technical problems, the invention adopts the following technical scheme:
a water quality analyzer comprising:
a mixing apparatus comprising at least one mixing tank;
a first flow path that transports a standard in a standard bottle to the mixing tank;
the second flow path is used for conveying the water sample in the water sample bottle to the mixing pool;
a third flow path including a plurality of third flow paths, each of the third flow paths being configured to transfer the reagent in a corresponding reagent bottle to the mixing well;
metering modules for quantifying the fluid are arranged among the first flow path, the second flow path, the third flow path and the mixing pool;
the detection module is communicated with the mixing pool and is used for digesting and detecting the mixed liquid after mixing;
and the controller is electrically connected with the detection module and each metering module.
Preferably, the metering module comprises a peristaltic pump, a liquid storage tank and at least two photoelectric sensors arranged at intervals, wherein the liquid storage tank is arranged between the peristaltic pump and the photoelectric sensors.
Preferably, the detection module comprises a digestion tube integrated with digestion and colorimetry.
Preferably, the two ends of the digestion pipe are respectively provided with an electromagnetic valve, the digestion pipe is further provided with a liquid pump, the liquid pump is used for realizing uniform mixing of the mixing pool in the forward direction, and the liquid pump rotates in the reverse direction to pump the sample liquid in the mixing pool into the digestion pipe.
Preferably, the mixing tank is provided with a through hole communicated with the outside.
Preferably, the mixing tank is connected with a waste liquid pump for discharging waste liquid.
Preferably, a fluorine tube is used for the connection.
An analysis method of a water quality analyzer, comprising the water quality analyzer from claim 1 to claim 7, which is characterized by comprising the following steps:
s1: guiding the standard sample in the standard sample bottle into the mixing pool through the first flow path for zero marking;
s2: introducing the water sample in the water sample bottle into the mixing pool through the second flow path;
s3: introducing the reagent in each reagent bottle into the mixing tank through the third flow path;
s4: the liquid pump blows air into the mixing tank to uniformly mix the water sample and the reagent in the mixing tank;
s5: the liquid pump flows the mixed liquid after the mixing of the mixing pool into a digestion tube for digestion and color comparison and outputs a detection result;
s6: the liquid pump returns the detected mixed liquid into the mixing tank
S7: and the waste liquid pump is used for outwards guiding out the mixed liquid after the detection in the mixing tank is finished.
Preferably, the controller controls the standard sample in the first flow path, the water sample in the second flow path and the reagent in the third flow path to be delivered to the mixing pool in a specified volume through the metering module.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the first flow path, the second flow path and the third flow path are respectively communicated with the mixing pool, so that the sample introduction efficiency of the mixing pool is improved;
2. the metering modules are arranged in the first flow path, the second flow path and the third flow path, and independent metering and sample introduction of each flow path are realized due to the metering modules, so that the accuracy of a metering result is ensured.
Drawings
FIG. 1 is a schematic view of a flow path of a water quality analyzer according to the present invention;
FIG. 2 is a schematic flow path diagram of a metering module of the present invention.
The names of the components marked in the figures are as follows:
1. a mixing tank; 11. a through hole; 2. a metering module; 21. a peristaltic pump; 22. a photosensor; 23. a liquid storage tank; 3. a digestion tube; 31. an electromagnetic valve; 4. a liquid pump; 5. and (4) a waste liquid pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings 1 to 2 and the embodiments.
The invention discloses a water quality analyzer, which comprises a first flow path, a second flow path, a third flow path, mixing equipment, a detection module and a controller, wherein the first flow path is communicated with the second flow path; the first flow path conveys a standard sample in a standard sample bottle to the mixing pool 1, the second flow path conveys a water sample in a water sample bottle to the mixing pool 1, and the third flow paths are provided with a plurality of third flow paths and respectively convey reagents of corresponding reagent bottles to the mixing pool 1; the controller completes digestion and color comparison of the sample liquid in the mixing pool 1 by controlling the detection module, completes measurement of the sample liquid and outputs a detection result.
Preferably, a metering module 2 for quantifying the fluid is arranged between the first flow path, the second flow path, the third flow path and the mixing pool 1, specifically, the metering module 2 comprises a peristaltic pump 21, a liquid storage tank 23 and at least two photoelectric sensors 22 arranged at intervals, the mounting sequence in each flow path is a reagent bottle or a water sample bottle or a standard sample bottle, the peristaltic pump 21, the liquid storage tank 23 and the photoelectric sensors 22 in sequence, the peristaltic pump 21 and the photoelectric switches are electrically connected with a controller, and the liquid storage tank 23 is used for removing bubbles in the sample liquid.
In the working process, the peristaltic pump 21 extracts the sample liquid at a constant speed and passes through the two photoelectric sensors 22, the two photoelectric sensors 22 measure a time difference value of the sample liquid as T, the volume of a pipeline between the two photoelectric sensors 22 is T, and thus the speed V of the peristaltic pump 21 is measured as T/T, so that if the first photoelectric sensor 22 is used as a sampling time counting point, the preset amount of the sample liquid is Q, the volume from the first photoelectric sensor 22 to the inlet of the mixing pool 1 is T1, so the sampling time T1 is (Q + T1)/V, wherein V is T/T; if the second photosensor 22 is used as the timing point of the sample injection time, the preset amount of the sample liquid is Q, and the volume from the second photosensor 22 to the inlet of the mixing pool 1 is T2, so that the sample injection time T1 is (Q + T2)/V, where V is T/T. The invention carries out the measurement of the sample liquid by the measurement mode, and ensures the accuracy of the measurement of the sample liquid.
It can be understood that the number of the photoelectric sensors 22 is not limited to two, and the number of the photoelectric sensors can be increased or decreased according to actual needs, such as introducing a third photoelectric sensor 22 as a sampling time counting point.
Further, the detection module comprises a digestion tube 3 which is integrally arranged for digestion and color comparison, the digestion tube 3 is electrically connected with the controller, and the digestion and color comparison is completed in the digestion tube 3 and the final detection result is output.
Furthermore, electromagnetic valves 31 are respectively arranged at two ends of the digestion pipe 3, a liquid pump 4 is also arranged on the digestion pipe 3, the electromagnetic valves 31 are respectively a first electromagnetic valve 31 arranged between the digestion pipe 3 and the mixing pool 1 and a second electromagnetic valve 31 arranged between the digestion pipe 3 and the liquid pump 4, the liquid pump 4 rotates in the forward direction to realize uniform mixing of the mixing pool 1, and the liquid pump 4 rotates in the reverse direction to pump the sample liquid in the mixing pool 1 into the digestion pipe 3; and a waste liquid pump 5 for discharging waste liquid is connected to the mixing tank 1. When the sample liquid flows into the mixing pool 1 to be mixed uniformly, the first electromagnetic valve 31 and the second electromagnetic valve 31 are opened, the liquid pump 4 rotates in the forward direction, and the liquid pump 4 blows air into the mixing pool 1, so that the sample liquid in the mixing pool 1 is mixed uniformly; when the sample liquid needs to flow into the digestion tube 3, the first electromagnetic valve 31 is opened, the second electromagnetic valve 31 is opened, the liquid pump 4 rotates reversely, and the sample liquid in the mixing pool 1 flows into the digestion tube 3 under the action of the liquid pump 4; after the detection is finished, the first electromagnetic valve 31 and the second electromagnetic valve 31 are opened, the liquid pump 4 rotates in the forward direction, and the sample liquid flows back to the mixing tank 1 again; in the liquid discharging process, the first electromagnetic valve 31 and the second electromagnetic valve 31 are closed, the waste liquid pump 5 rotates, and the waste liquid in the mixing tank 1 is discharged outwards through the waste liquid pump 5.
Further, set up on the mixing tank 1 with external communicating through-hole 11, through-hole 11's setting makes when the appearance liquid all flows into to mixing tank 1 in the time of the needs mixing, drawing liquid pump 4 forward rotation, drawing liquid pump 4 blows the air to mixing tank 1 in and the air is outwards derived along through-hole 11, sets up like this and has guaranteed mixing tank 1 interior mixing liquid mixing homogeneity.
Furthermore, two adjacent devices are connected by adopting a fluorine pipe.
The invention also discloses an analysis method for the water quality analyzer, which specifically comprises the following steps:
s1: guiding the standard sample in the standard sample bottle into the mixing pool 1 through the first flow path for zero marking;
s2: introducing the water sample in the water sample bottle into the mixing pool 1 through a second flow path;
s3: introducing the reagents in the respective reagent bottles into the mixing tank 1 through the third flow path;
s4: the liquid pump 4 blows air into the mixing pool 1 to uniformly mix the water sample and the reagent in the mixing pool 1;
s5: the liquid pump 4 flows the mixed liquid after the mixing of the mixing pool 1 into the digestion tube 3 for digestion and color comparison and outputs a detection result;
s6: the liquid pump 4 returns the detected mixed liquid to the mixing tank 1;
s7: and the waste liquid pump 5 is used for guiding out the mixed liquid after the detection in the mixing tank 1 is finished.
Preferably, in the above step process, the controller controls the standard sample in the first flow path, the water sample in the second flow path, and the reagent in the third flow path to be delivered to the mixing tank 1 in a specified volume through the metering module 2, so that the metering module 2 is arranged to ensure the metering accuracy, thereby ensuring the accuracy of the detection result.
Further, the liquid pump 4 blows air into the mixing tank 1, the first electromagnetic valve 31 and the second electromagnetic valve 31 are opened, and the liquid pump 4 rotates in the forward direction; when the liquid pump 4 mixes the mixing tank 1, the first electromagnetic valve 31 is opened and the second electromagnetic valve 31 is opened, and the liquid pump 4 rotates reversely; when the liquid pump 4 returns the detected mixed liquid to the mixing tank 1, the first electromagnetic valve 31 is opened and the second electromagnetic valve 31 is opened, and the liquid pump 4 rotates forwards; when the waste liquid pump 5 leads out the detected mixed liquid in the mixing tank 1, the first electromagnetic valve 31 and the second electromagnetic valve 31 are closed. The arrangement ensures the normal operation of the invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, i.e. all equivalent variations and modifications made by the present invention are covered by the scope of the claims of the present invention, which is not limited by the examples herein.
Claims (9)
1. A water quality analyzer, comprising:
a mixing apparatus comprising at least one mixing tank;
a first flow path that transports a standard in a standard bottle to the mixing tank;
the second flow path is used for conveying the water sample in the water sample bottle to the mixing pool;
a third flow path including a plurality of third flow paths, each of the third flow paths being configured to transfer the reagent in a corresponding reagent bottle to the mixing well;
metering modules for quantifying the fluid are arranged among the first flow path, the second flow path, the third flow path and the mixing pool;
the detection module is communicated with the mixing pool and is used for digesting and detecting the mixed liquid after mixing;
and the controller is electrically connected with the detection module and each metering module.
2. The water quality analyzer of claim 1, wherein the metering module comprises a peristaltic pump, a liquid storage tank and at least two spaced apart photoelectric sensors, the liquid storage tank being disposed between the peristaltic pump and the photoelectric sensors.
3. A water quality analyzer according to claim 2 wherein the detection module comprises a digestion tube integrated with digestion colorimetry.
4. The water quality analyzer according to claim 3, wherein the digestion pipe is provided with electromagnetic valves at two ends thereof, and a liquid pump is further provided on the digestion pipe, the liquid pump realizes uniform mixing in the mixing tank in a forward direction, and the liquid pump rotates in a reverse direction to pump the sample liquid in the mixing tank into the digestion pipe.
5. A water quality analyzer according to claim 4, wherein the mixing tank is provided with a through hole communicated with the outside.
6. A water quality analyzer according to claim 5 wherein a waste liquid pump for discharging waste liquid is connected to the mixing tank.
7. A water quality analyzer in accordance with claim 1 wherein the connection is made by a fluorine tube.
8. An analysis method of a water quality analyzer, comprising the water quality analyzer from claim 1 to claim 7, which is characterized by comprising the following steps:
s1: guiding the standard sample in the standard sample bottle into the mixing pool through the first flow path for zero marking;
s2: introducing the water sample in the water sample bottle into the mixing pool through the second flow path;
s3: introducing the reagent in each reagent bottle into the mixing tank through the third flow path;
s4: the liquid pump blows air into the mixing tank to uniformly mix the water sample and the reagent in the mixing tank;
s5: the liquid pump flows the mixed liquid after the mixing of the mixing pool into a digestion tube for digestion and color comparison and outputs a detection result;
s6: the liquid pump returns the detected mixed liquid into the mixing tank
S7: and the waste liquid pump is used for outwards guiding out the mixed liquid after the detection in the mixing tank is finished.
9. The water quality analyzer according to claim 8, wherein the controller controls the standard sample in the first flow path, the water sample in the second flow path and the reagent in the third flow path to be delivered to the mixing tank in a specified volume through the metering module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911331450.8A CN110987585A (en) | 2019-12-21 | 2019-12-21 | Water quality analyzer and analysis method for water quality analyzer |
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| CN201911331450.8A CN110987585A (en) | 2019-12-21 | 2019-12-21 | Water quality analyzer and analysis method for water quality analyzer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161978A (en) * | 2020-09-29 | 2021-01-01 | 上海亨通海洋装备有限公司 | Nutrient salt water quality analyzer |
| CN112179897A (en) * | 2020-09-29 | 2021-01-05 | 上海亨通海洋装备有限公司 | Flow path system of ammonia nitrogen online monitor and analysis method thereof |
-
2019
- 2019-12-21 CN CN201911331450.8A patent/CN110987585A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161978A (en) * | 2020-09-29 | 2021-01-01 | 上海亨通海洋装备有限公司 | Nutrient salt water quality analyzer |
| CN112179897A (en) * | 2020-09-29 | 2021-01-05 | 上海亨通海洋装备有限公司 | Flow path system of ammonia nitrogen online monitor and analysis method thereof |
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