CN209979615U - Water quality control flow path and quality control instrument - Google Patents
Water quality control flow path and quality control instrument Download PDFInfo
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- CN209979615U CN209979615U CN201920770437.1U CN201920770437U CN209979615U CN 209979615 U CN209979615 U CN 209979615U CN 201920770437 U CN201920770437 U CN 201920770437U CN 209979615 U CN209979615 U CN 209979615U
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Abstract
The embodiment of the utility model provides a water quality control flow path and a quality control instrument, wherein the water quality control flow path comprises a pipeline emptying pump, a sample introduction three-way valve, a standard liquid bottle group and a quality control sample introduction multi-channel valve; the normally closed end of the sample injection three-way valve is connected with the quality control sample injection multi-channel valve through a pipeline, and the standard liquid bottle group is connected with the quality control sample injection multi-channel valve. The common end of the sample introduction three-way valve is connected with a water quality analyzer and is used for detecting a water sample; the pipeline emptying pump is arranged between the sample injection three-way valve and the quality control sample injection multi-channel valve. The quality control sample introduction multi-channel valve comprises a plurality of valves which are respectively communicated with the standard solution bottle group to convey the standard solution in the standard solution bottle group to the water quality analyzer so that the water quality analyzer can measure the standard solution with various different concentrations, and the pipeline emptying pump can be used for emptying accumulated liquid in a pipeline or rinsing the pipeline by using the standard solution in the standard solution bottle group to improve the detection accuracy of the water quality analyzer.
Description
Technical Field
The utility model relates to an instrument matter accuse field particularly, relates to a quality of water matter accuse flow path and matter accuse appearance.
Background
The quality control instrument is a device for supervising and examining the data monitored by the water quality analyzer. Firstly, preparing a standard solution with a given concentration, conveying the standard solution to a water quality analyzer, and analyzing and comparing a solution concentration value measured by the water quality analyzer with the given concentration of the standard solution value, thereby judging the working state of the water quality analyzer and ensuring the validity of data monitored by the water quality analyzer.
The quality control instrument in the market at present has the following problems due to the limitation of the flow path structure: the quality control instrument can acquire a single quantity of quality control samples, and cannot acquire a plurality of quality control samples with different concentrations, so that the function of the quality control instrument is incomplete; the problem of liquid accumulation in the pipeline exists, and the next measurement of the instrument is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, an embodiment of the present invention provides a water quality control flow path and a quality control instrument.
In a first aspect, an embodiment of the present invention provides a water quality control flow path, which includes a pipeline evacuation pump, a sample injection three-way valve, a standard liquid bottle set, and a quality control sample injection multi-channel valve;
the sample introduction three-way valve comprises a normally open end, a normally closed end and a public end, the normally closed end of the sample introduction three-way valve is connected with the quality control sample introduction multi-channel valve through a pipeline, and the standard liquid bottle group is connected with the quality control sample introduction multi-channel valve;
the common end of the sample introduction three-way valve is connected with a water quality analyzer and is used for detecting a water sample;
the pipeline emptying pump is arranged between the sample injection three-way valve and the quality control sample injection multi-channel valve and is used for emptying accumulated liquid in the pipeline or rinsing the pipeline.
Optionally, in this embodiment, the water quality control flow path further includes a water sample separation three-way valve, a labeling cup and a water sample injection pump;
the common end of the water sample separation three-way valve is connected with the water sample sampling pump through a pipeline, and the normally open end of the sampling three-way valve is connected with the common end of the water sample separation three-way valve through a pipeline and is used for conveying the pretreated water sample to a water quality analyzer;
the first input end of the labeling cup is connected with the water sample sampling pump through a pipeline and used for conveying an untreated water sample to the labeling cup, the first output end of the labeling cup is communicated with the quality control sampling multi-channel valve, and the first output end is arranged on the wall, close to the top, of the labeling cup.
Optionally, in this embodiment, the water quality control flow path further includes a standard solution adding bottle and a standard solution adding metering pump;
the label adding liquid bottle is communicated with a second input end of the label adding cup through the label adding metering pump and is used for adding a label liquid into the label adding cup, wherein the second input end is arranged on the cup wall of the label adding cup close to the top.
Optionally, in this embodiment, the water quality control flow path further includes a standard-adding level meter, and the standard-adding level meter is disposed in the standard-adding cup and is used for measuring the volume of the water sample in the standard-adding cup.
Optionally, in this embodiment, the water quality control flow path further includes a drain valve, and the drain valve is communicated with the second output end at the bottom of the labeling cup and is used for discharging the water sample in the labeling cup.
Optionally, in this embodiment, the water quality control flow path further includes a washing pump for adding a standard cup and a water tank;
the water tank is connected with a third input end of the label adding cup through the label adding cup cleaning pump and is used for cleaning the label adding cup, wherein the third input end is arranged at the top of the label adding cup.
Optionally, in this embodiment, the water quality control flow path further includes a sample retention branch, and the sample retention branch includes a sample retention valve and a sample retention bottle;
leave a kind branch road and set up between the first input of water sample sampling pump and mark cup, leave the one end of appearance valve pass through the pipeline with water sample sampling pump and add the pipeline intercommunication between the mark cup, leave the one end of appearance valve with leave a kind bottle intercommunication to the water sample of reserving.
Optionally, in this embodiment, an overflow port is further disposed at the top of the labeling cup, and is used for discharging the excess water sample in the labeling cup when the volume of the water sample in the labeling cup exceeds a threshold value.
In a second aspect, the embodiment of the present invention further provides a quality control instrument, the quality control instrument includes a water quality analyzer and a controller for controlling the quality of water in the water quality flow path.
Optionally, in this embodiment, the quality control instrument further includes a control unit;
the pipeline evacuation pump, the water sample sampling pump, add mark measuring pump, add mark level gauge and add mark cup scavenging pump all with the control unit electric connection, the control unit is used for controlling the pipeline evacuation pump, the water sample sampling pump, add mark measuring pump and add the operating condition of mark cup scavenging pump.
Compared with the prior art, the embodiment of the utility model provides a following beneficial effect has:
the embodiment of the utility model provides a water quality control flow path and a quality control instrument, wherein the water quality control flow path comprises a pipeline emptying pump, a sample introduction three-way valve, a standard liquid bottle group and a quality control sample introduction multi-channel valve; the normally closed end of the sample injection three-way valve is connected with the quality control sample injection multi-channel valve through a pipeline, and the standard liquid bottle group is connected with the quality control sample injection multi-channel valve. The common end of the sample introduction three-way valve is connected with a water quality analyzer and is used for detecting a water sample; the pipeline emptying pump is arranged between the sample injection three-way valve and the quality control sample injection multi-channel valve. The quality control sample introduction multi-channel valve comprises a plurality of valves which are respectively communicated with the standard solution bottle group to convey the standard solution in the standard solution bottle group to the water quality analyzer so that the water quality analyzer can measure the standard solution with various different concentrations, and the pipeline emptying pump can be used for emptying accumulated liquid in a pipeline or rinsing the pipeline by using the standard solution in the standard solution bottle group to improve the detection accuracy of the water quality analyzer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is one of the schematic structural diagrams of a water quality control flow path according to an embodiment of the present invention;
fig. 2 is a second schematic structural view of a water quality control flow path according to an embodiment of the present invention;
fig. 3 is a third schematic structural view of a water quality control flow path according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a quality control instrument provided in the embodiment of the present invention.
Icon: 10-a quality control instrument; 100-water quality control flow path; 200-water quality analyzer; 101-pipeline evacuation pump; 102-sample introduction three-way valve; 103-standard liquid bottle group; 104-a quality control sample introduction multi-channel valve; 105-water sample separation three-way valve; 106-adding a label cup; 107-water sample injection pump; 108-adding a standard liquid bottle; 109-a standard addition metering pump; 110-a calibration level meter; 111-a blowdown valve; 112-washing pump with a standard cup; 113-a water tank; 114-sample retention branch; 1021-the normally open end of the sample injection three-way valve; 1022-the normally closed end of the sample injection three-way valve; 1023-the common end of the sample injection three-way valve; 1051-the common end of the water sample separation three-way valve; 1052-normally closed end of the water sample separation three-way valve; 1053-the normally open end of the water sample separation three-way valve; 1061-a first input; 1062 — a first output; 1063-second input; 1064-second output; 1065-third input; 1141-sample retention valve; 1142-leave the sample bottle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as 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 present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
The terms "upper", "lower", "left", "right", "inner", "outer", and the like refer to orientations or positional relationships based on the drawings, or the orientations or positional relationships that are conventionally used to place the products of the present invention, and are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, it is also to be understood that the terms "disposed," "mounted," "connected," and the like are intended to be construed broadly unless otherwise specifically indicated and limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a water quality control flow path according to an embodiment of the present invention, in which the water quality control flow path 100 includes a pipeline evacuation pump 101, a sample injection three-way valve 102, a standard liquid bottle set 103, and a quality control sample injection multi-channel valve 104.
And a normally closed end 1022 of the sample injection three-way valve is connected with the quality control sample injection multi-channel valve 104 through a pipeline, and the standard liquid bottle group 103 is connected with the quality control sample injection multi-channel valve 104. The standard solution bottle group 103 comprises a plurality of standard solution bottles for storing standard solutions with different concentrations.
And the public end 1023 of the sample introduction three-way valve is connected with a water quality analyzer and used for detecting a water sample. The water quality analyzer receives the water sample from the water quality control flow path, detects the water sample, and can judge whether the detection result of the water quality analyzer is accurate or not by comparing the detection result with the concentration of the standard water sample.
The standard solutions with different concentrations can be stored in the plurality of the standard bottles, so that the water quality analyzer can measure the standard solutions with different concentrations, and the quality control result is more accurate.
The pipeline emptying pump 101 is arranged between the sample injection three-way valve 102 and the quality control sample injection multi-channel valve 104 and is used for emptying accumulated liquid in the pipeline or rinsing the pipeline.
When one-time quality control is finished, accumulated liquid in the pipeline is emptied through the pipeline emptying pump 101, and the accumulated liquid is prevented from influencing the next quality control result. Simultaneously, before quality control goes on, accessible pipeline evacuation pump 101 pumps the standard solution in the mark liquid bottle group 103 and rinses the pipeline in to the pipeline for water quality analyzer's testing result is more accurate.
Referring to fig. 2, fig. 2 is a second schematic structural diagram of a water quality control flow path according to an embodiment of the present invention. In this embodiment, the water quality control flow path 100 further includes a water sample separation three-way valve 105, a labeling cup 106, and a water sample injection pump 107.
The utility model discloses a water quality analyzer, including water sample separation three-way valve, water sample sampling pump 107, sample injection three-way valve's common port 1051 through the pipeline with the water sample sampling pump 107 is connected, sample injection three-way valve's the normal start 1021 through the pipeline with the common port 1051 of water sample separation three-way valve is connected, and the water sample after the preliminary treatment passes through the normal start 1053 of water sample separation three-way valve carries the common port 1051 of water sample separation three-way valve to carry the water sample to water quality analyzer.
The first input end 1061 of the labeling cup 106 is connected to the water sample injection pump 107 through a pipeline, and is configured to deliver an untreated water sample to the labeling cup 106, the first output end 1062 of the labeling cup 106 is communicated with the quality control sample injection multi-channel valve 104, and the first output end 1062 is disposed on a cup wall of the labeling cup 106 near the top.
When the integrated intervention check is performed, the non-pretreated water sample is connected through the normally closed end 1052 of the water sample separation three-way valve and is conveyed to the standard adding cup 106, and after the non-pretreated water sample is kept still in the standard adding cup for a period of time, the supernatant of the non-pretreated water sample is conveyed to the water quality analyzer through the quality control sample introduction multi-channel valve 104 for detection.
When the quality control is not carried out, the water quality analyzer is directly connected with a water sample to be detected through the normally open end 1021 of the sample introduction three-way valve, namely the water sample to be detected can enter the pipeline through the water sample separation three-way valve 105 and is conveyed to the water quality analyzer for detection; when a certain project is controlled, the water quality analyzer is connected with the quality control sample injection multi-channel valve 104 through the normally closed end 1022 of the sample injection three-way valve.
Referring to fig. 2, the water quality control flow path 100 further includes a standard solution adding bottle 108 and a standard solution adding metering pump 109.
The standard adding liquid bottle 108 is communicated with the second input end 1063 of the standard adding cup 106 through the standard adding metering pump 109, and is used for adding a standard liquid into the standard adding cup 106. Wherein the second input 1063 is disposed on the wall of the labeling cup 106 near the top.
When the quality of the water quality analyzer is controlled, the standard solution needs to be added into the standard adding cup 106 to change the concentration of the solution in the standard adding cup 106, so as to further ensure the accuracy of the detection result of the water quality analyzer.
Referring to fig. 2, the water quality control flow path 100 further includes a calibration level meter 110. The marking liquid level meter 110 is disposed in the marking cup 106 and is used for measuring the volume of the water sample in the marking cup 106 and preventing the volume of the water sample in the marking cup 106 from exceeding a threshold value.
Optionally, the calibration level meter 110 may be a float level meter. The floating ball liquid level meter is designed according to the Archimedes buoyancy principle, the floating ball moves up and down along with the liquid level change in the container, the reed pipe of the floating ball liquid level meter is attracted by magnetism due to the magnetic action, so that the internal resistance of the sensor changes linearly, and the change of the resistance is converted into direct current signals with different sizes by the converter to be output, so that the remote detection and control of the liquid level are realized.
According to the difference of liquid chemical property and liquid density, the floating balls with different materials and sizes are selected to achieve the best measuring precision.
Referring to fig. 3, fig. 3 is a third schematic structural view of a water quality control flow path according to an embodiment of the present invention. In this embodiment, the water quality control flow path 100 further includes a drain valve 111, and the drain valve 111 is communicated with the second output port 1064 at the bottom of the labeling cup 106 for draining the water sample in the labeling cup 106.
After the quality control is finished, the drainage valve 111 is opened to drain the water sample in the labeling cup 106 for the next quality control.
With continued reference to fig. 3, the water quality control flow path 100 further includes a labeled cup cleaning pump 112 and a water tank 113.
The water tank 113 is connected to a third input port 1065 of the labeled cup 106 through the labeled cup washing pump 112, wherein the third input port 1065 is disposed at the top of the labeled cup 106, so that the clean water in the water tank 113 can wash various places of the labeled cup 106.
After the quality control is finished, the labeling cup cleaning pump 112 pumps the clean water in the water tank 113 to the labeling cup 106 for cleaning the labeling cup 106, and the cleaned water is discharged through the drain valve 111. The influence of the residual water sample in the labeling cup 106 on the next quality control result is avoided.
Referring to fig. 3, the water quality control flow path 100 further includes a sample retention branch 114, and the sample retention branch 114 includes a sample retention valve 1141 and a sample retention bottle 1142.
The sample reserving branch 114 is arranged between the first input ends 1061 of the water sample sampling pump 107 and the labeling cup 106, one end of the sample reserving valve 1141 is communicated with the pipeline between the water sample sampling pump 107 and the labeling cup 106 through a pipeline, and one end of the sample reserving valve 1141 is communicated with the sample reserving bottle 1142 to reserve a water sample.
In the quality control process, when a water sample needs to be reserved, the sample reserving valve 1141 is opened, and the water sample can flow into the sample reserving bottle 1142 for preservation.
It should be noted that, in the embodiment of the present invention, the water quality control flow path 100 includes at least one sample retention branch 114. The number of the sample retention branches 114 shown in fig. 3 is not limited to the number of the sample retention branches 114 in this embodiment.
In this embodiment, an overflow port is further disposed at the top of the labeling cup 106. When the marking liquid level meter 110 fails, it may be impossible to detect whether the volume of the water sample in the marking cup 106 reaches a preset value, so that the marking metering pump 109 continuously adds the marking liquid into the marking cup 106, and the overflow port is used for discharging the excess water sample in the marking cup 106 under such a condition.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a quality control instrument according to an embodiment of the present invention. The quality control instrument 10 includes a water quality analyzer 200 and a water quality control flow path 100. The water quality control flow path 100 is used for controlling the water quality analyzer 200 to ensure the accuracy of the detection result of the water quality analyzer 200.
The quality control instrument 10 further includes a control unit. Pipeline evacuation pump 101, water sample sampling pump 107, add mark measuring pump 109, add mark level gauge 110 and add mark cup cleaning pump 112 all with the control unit electric connection, the control unit is used for controlling pipeline evacuation pump 101, water sample sampling pump 107, adds the operating condition of mark measuring pump 109 and adding mark cup cleaning pump 112.
The adding mark liquid level meter 110 sends a direct current signal to a control unit, the control unit calculates the volume of the water sample in the adding mark cup 106 according to the direct current signal, and judges whether the volume of the water sample exceeds a preset volume threshold, if so, a control instruction is sent to the adding mark metering pump 109, so that the adding mark liquid by the adding mark metering pump 109 is stopped from being added to the adding mark cup 106.
To sum up, the embodiment of the utility model provides a water quality control flow path and a quality control instrument, wherein the water quality control flow path comprises a pipeline emptying pump, a sample introduction three-way valve, a standard liquid bottle group and a quality control sample introduction multi-channel valve; the normally closed end of the sample injection three-way valve is connected with the quality control sample injection multi-channel valve through a pipeline, and the standard liquid bottle group is connected with the quality control sample injection multi-channel valve. The common end of the sample introduction three-way valve is connected with a water quality analyzer and is used for detecting a water sample; the pipeline emptying pump is arranged between the sample injection three-way valve and the quality control sample injection multi-channel valve. The quality control sample introduction multi-channel valve comprises a plurality of valves which are respectively communicated with the standard solution bottle group to convey the standard solution in the standard solution bottle group to the water quality analyzer so that the water quality analyzer can measure the standard solutions with various different concentrations, and the pipeline emptying pump can be used for emptying accumulated liquid in a pipeline or rinsing the pipeline by using the standard solution in the standard solution bottle group to ensure the accuracy of the detection result of the water quality analyzer.
And simultaneously, through the embodiment of the utility model provides a quality of water matter quality control flow path still can realize multiple quality control project, for example, check zero point 24 hours drift, span check 24 hours drift, the linear inspection of multiple spot, actual water sample is compared, parallel appearance is compared, add standard recovery rate automatic test, integrated intervention inspection etc..
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A water quality control flow path is characterized in that the water quality control flow path comprises a pipeline emptying pump, a sample injection three-way valve, a standard liquid bottle group and a quality control sample injection multi-channel valve;
the sample introduction three-way valve comprises a normally open end, a normally closed end and a public end, the normally closed end of the sample introduction three-way valve is connected with the quality control sample introduction multi-channel valve through a pipeline, and the standard liquid bottle group is connected with the quality control sample introduction multi-channel valve;
the common end of the sample introduction three-way valve is connected with a water quality analyzer and is used for detecting a water sample;
the pipeline emptying pump is arranged between the sample injection three-way valve and the quality control sample injection multi-channel valve and is used for emptying accumulated liquid in the pipeline or rinsing the pipeline.
2. The water quality control flow path according to claim 1, further comprising a water sample separation three-way valve, a labeling cup and a water sample injection pump;
the common end of the water sample separation three-way valve is connected with the water sample sampling pump through a pipeline, and the normally open end of the sampling three-way valve is connected with the common end of the water sample separation three-way valve through a pipeline and is used for conveying the pretreated water sample to a water quality analyzer;
the first input end of the labeling cup is connected with the water sample sampling pump through a pipeline and used for conveying an untreated water sample to the labeling cup, the first output end of the labeling cup is communicated with the quality control sampling multi-channel valve, and the first output end is arranged on the wall, close to the top, of the labeling cup.
3. The water quality control flow path according to claim 2, further comprising a standard-adding liquid bottle and a standard-adding metering pump;
the label adding liquid bottle is communicated with a second input end of the label adding cup through the label adding metering pump and is used for adding a label liquid into the label adding cup, wherein the second input end is arranged on the cup wall of the label adding cup close to the top.
4. The water quality control flow path according to claim 3, further comprising a standard-adding level meter, wherein the standard-adding level meter is arranged in the standard-adding cup and is used for measuring the volume of the water sample in the standard-adding cup.
5. The water quality control flow path according to claim 4, further comprising a drain valve, wherein the drain valve is communicated with the second output end at the bottom of the labeling cup and is used for discharging a water sample in the labeling cup.
6. The water quality control flow path according to claim 5, further comprising a labeled cup washing pump and a water tank;
the water tank is connected with a third input end of the label adding cup through the label adding cup cleaning pump and is used for cleaning the label adding cup, wherein the third input end is arranged at the top of the label adding cup.
7. The water quality control flow path according to claim 6, wherein the water quality control flow path further comprises a sample retention branch, and the sample retention branch comprises a sample retention valve and a sample retention bottle;
leave a kind branch road and set up between the first input of water sample sampling pump and mark cup, leave the one end of appearance valve pass through the pipeline with water sample sampling pump and add the pipeline intercommunication between the mark cup, leave the one end of appearance valve with leave a kind bottle intercommunication to the water sample of reserving.
8. The water quality control flow path according to claim 7, wherein an overflow port is further provided at the top of the labeling cup for discharging the excess water sample in the labeling cup when the volume of the water sample in the labeling cup exceeds a threshold value.
9. A quality control instrument, which is characterized by comprising a water quality analyzer and the water quality control flow path of claim 8 for quality control detection of the water quality analyzer.
10. The quality control instrument according to claim 9, further comprising a control unit;
the pipeline evacuation pump, the water sample sampling pump, add mark measuring pump, add mark level gauge and add mark cup scavenging pump all with the control unit electric connection, the control unit is used for controlling the pipeline evacuation pump, the water sample sampling pump, add mark measuring pump and add the operating condition of mark cup scavenging pump.
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| CN201920770437.1U CN209979615U (en) | 2019-05-27 | 2019-05-27 | Water quality control flow path and quality control instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111366695A (en) * | 2020-03-24 | 2020-07-03 | 杭州绿洁环境科技股份有限公司 | Water quality monitoring's control system that marks |
| 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 |
| CN112763677A (en) * | 2020-12-29 | 2021-05-07 | 江苏汇环环保科技有限公司 | Water quality online quality control instrument capable of simultaneously controlling multiple monitoring parameters |
-
2019
- 2019-05-27 CN CN201920770437.1U patent/CN209979615U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111366695A (en) * | 2020-03-24 | 2020-07-03 | 杭州绿洁环境科技股份有限公司 | Water quality monitoring's control system that marks |
| 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 |
| CN112763677A (en) * | 2020-12-29 | 2021-05-07 | 江苏汇环环保科技有限公司 | Water quality online quality control instrument capable of simultaneously controlling multiple monitoring parameters |
| CN112763677B (en) * | 2020-12-29 | 2022-12-09 | 江苏汇环环保科技有限公司 | Water quality online quality control instrument capable of simultaneously controlling multiple monitoring parameters |
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