JP3222419U - Water quality analyzer - Google Patents

Abstract

A water quality analyzer for automatically inspecting a device according to an operator's command is provided. A water quality analyzer communicates with a reaction cell of a water quality analyzer via a flow path, and is installed in the flow path, a reagent supply unit that supplies various reagents and / or detection samples to the reaction cell, Located between the supply unit and the reaction cell, and installed in the reaction cell and the supply rewrite unit that rewrites various reagents and / or detection samples flowing into the reaction cell by rewriting the flow path, and flowed into the reaction cell A detection unit that detects a reagent and / or a detection sample, and a result analysis unit that is communicably connected to the detection unit, receives a detection result detected by the detection unit, and determines whether the detection result is a normal value; The reagent supply unit, the supply rewrite unit, and the detection unit are communicably connected to each other, and the reagent supply command, the supply rewrite command, and the detection command are supplied to the reagent supply unit, the supply rewrite unit, and the detection unit according to an operator command. And a control unit for sending respectively, the. [Selection] Figure 1

Description

  This utility model relates to a water quality analyzer.

Now, the problem of environmental pollution is becoming more serious, and the demand for monitoring and maintenance of the environment is also increasing. In particular, the “Technical Specifications for Monitoring Surface Water and Sewage” issued by China's Directorate General for Environmental Protection defines not only the detection of surface water and sewage but also the inspection method of the equipment performance in detail. "Technical specifications for monitoring surface water and sewage" is required to check the accuracy, accuracy, standard curve, etc. of the equipment, and for the first time to check the recovery rate of internal marks. Specifically, the same reagent is divided into two parts, and the volume of the standard (internal standard (internal standard substance)) of the reagent waiting for quantitative detection in one of them is more than 1% of the volume of the original reagent The difference between the result of the reagent added with the internal standard added and the result of the reagent not added with the internal standard added is the ratio of the standard to the theoretical value of the standard added, ie, the internal standard recovery rate (P) Calculated by the following formula.

  Here, P is the recovery rate of the internal standard, m2 is the detection value of the reagent to which the internal standard is added, m1 is the detection value of the reagent to which the internal standard is not added, m is the theory of the standard to which it is added It is a value.

  However, in the conventional water quality analyzer, when performing the above-mentioned inspection, the operator needs to perform the manual calculation after the control standard solution is continuously connected to the water quality analyzer inlet at the inspection site and the detection is completed. . Based on the calculation result, the water quality analyzer is inspected to determine whether the water quality analyzer satisfies the requirements.

  For example, when checking the recovery rate of the internal standard, the operator manually creates a mixture of the reagent and the internal standard solution, and sequentially analyzes the water quality of the reagent to which the internal standard is added and the reagent to which the internal standard is not added. It is necessary to calculate the internal standard recovery rate by hand calculation after the detection is completed continuously with the injection port of the meter.

  This utility model is for solving the above-described problems, and an object thereof is to provide a water quality analyzer for automatically inspecting an apparatus.

  A water quality analyzer according to a utility model of the present invention comprises: a reagent supply unit in communication with a reaction cell of the water quality analyzer via a flow path, for supplying various reagents and / or detection samples to the reaction cell; Installed between the reagent supply unit and the reaction cell, the supply rewriting unit rewriting the various reagents and / or the detection sample flowing into the reaction cell by rewriting the flow path, and the reaction A detection unit installed in a cell and detecting the reagent and / or the detection sample flowing into the reaction cell is communicably connected to the detection unit, and receives a detection result detected by the detection unit, A result analysis unit that determines whether the detection result is a normal value, and the reagent supply unit, the supply rewriting unit, and the detection unit are communicably connected, and the reagent supply is performed according to an operator's command. Comprising command, supply rewriting command, and the detection command, the reagent supply unit, the supply rewriting unit, and a control unit for sending to each of the detecting unit.

  According to the utility model of the present invention, when an operator's inspection instruction is issued, the control unit instructs the reagent supply unit, the supply rewriting unit, and the detection unit to supply a reagent supply instruction, a supply rewrite instruction, and a detection instruction. Ship. The reagent supply unit starts or stops the supply of the reagent and / or the detection sample according to the received reagent supply instruction, and the supply rewriting unit rewrites the flow path according to the received supply rewriting instruction, and the supply is performed. The type of reagent and / or detection sample is selected, and the detection unit starts or stops detection according to a detection command. Then, the result analysis unit analyzes the detected detection result to determine whether it is a normal value. As a result, the water quality analyzer according to the utility model of the present application automatically inspects the device in accordance with an instruction from the operator.

FIG. 1 is a functional block diagram of a water quality analyzer according to an embodiment of a utility model of the present application. FIG. 2 is a flow-path block diagram of the water quality analyzer based on the embodiment of the utility model of this application. FIG. 3 is a functional block diagram of a water quality analyzer according to another embodiment of the utility model of the present application.

  Hereinafter, an embodiment according to the present utility model will be described with reference to the drawings.

  FIG. 1 is a functional block diagram of a water quality analyzer according to an embodiment of a utility model of the present invention, and FIG. 2 is a flow path configuration diagram of a water quality analyzer according to an embodiment of a utility model of the present application.

  As shown in FIGS. 1 and 2, the water quality analyzer 1 according to the embodiment of the present invention includes a reagent supply unit 11, a supply rewriting unit 12, a detection unit 13, a control unit 14, and a result analysis unit 15. And a storage unit 16 and a communication unit 17.

  The reagent supply unit 11 includes an air mixing pump 21 and a syringe 22. The reagent supply unit 11 communicates with the reaction cell 24 of the water quality analyzer through a flow path, and various reagents (for example, reagents A to D and control standard solutions A to C, internal standard solution) and / or detection sample is supplied to the reaction cell 24. Here, the reaction cell 24 is an ordinary reaction cell in this field having a cylindrical shape, a columnar shape, a pyramid shape, or the like. The detection sample flows into the reaction cell 24 from one end of the reaction cell 24 and flows out of the reaction cell 24 from the other end opposite to one end flowing into the reaction cell 24.

  The supply rewriting unit 12 includes multiport valves 23 and 26, is installed in the flow path, is between the reagent supply unit 11 and the reaction cell 24, and flows into the reaction cell 24 by rewriting the flow path. Rewrite various reagents and / or detection samples.

  The detection unit 13 includes a light source 28 and a photoelectric sensor 27. The photoelectric sensor 27 and the light source 28 are disposed on both sides of the reaction cell 4, and the photoelectric sensor 27 receives detection light transmitted from the light source 28 and the reaction cell 24. That is, the light source 28 irradiates the inside of the reaction cell 24 with detection light from the surface on one side of the reaction cell 24, and the photoelectric sensor 27 is disposed on the other side of the reaction cell 24 facing the light source 28. The detection light transmitted through the reagent and / or the detection sample in the reaction cell 24 is received, and the light intensity of the detection light is detected. The optical path of the detection light is orthogonal to the direction in which the detection sample flows.

  The control unit 14 is communicably connected to the reagent supply unit 11, the supply rewriting unit 12, and the detection unit 13, and the reagent supply instruction, the supply rewriting instruction, and the detection instruction are supplied to the reagent supply unit 11 according to the operator's command. , And are sent to the supply rewriting unit 12 and the detection unit 13, respectively.

  The result analysis unit 15 is communicably connected to the detection unit 13, receives the detection result detected by the detection unit 13, and determines whether the detection result is a normal value. Result analysis unit 15 calculates the concentration of the reagent and / or the detection sample according to the light intensity detected by the detection unit 13 and a standard curve indicating the relationship between the light intensity and the concentration, and the reagent and / or the reagent It is determined whether or not the concentration of the detection sample is a normal value. Specifically, when the reagent supplied by the reagent supply unit 11 includes the internal standard liquid, the result analysis unit 15 calculates and calculates the internal standard recovery rate based on the concentration of the reagent and / or the detection sample. If the recovery rate of internal standard is within the specified range, it is judged that the concentration of the reagent and / or the detection sample is normal, that is, the water quality analyzer meets the requirement. When the reagent supplied by the reagent supply unit 11 includes the control standard solution, the result analysis unit 15 calculates the difference between the concentration of the reagent and / or the detection sample and the concentration of the control standard solution, and If the difference is within a specified range, it is determined that the concentration of the reagent and / or the detection sample is a normal value, that is, the water quality analyzer meets the requirement. The range of the above-mentioned regulation is set reasonably on the premise of satisfying the requirements in “surface water and sewage monitoring technical specifications”, for example.

  As shown in FIG. 2, the water quality analyzer according to the present utility model further includes a storage unit 16. The storage unit 16 is communicably connected to the detection unit 13, the control unit 14, and the result analysis unit 15. The storage unit 16 stores a command set in advance by the operator. The control unit 14 controls the reagent supply unit 11, the supply rewriting unit 12, and the detection unit 13 according to the command. The detection result of the detection unit 13 and the determination result of the result analysis unit 15 may be stored in the storage unit 16.

  Further, as shown in FIG. 1, the water quality analyzer according to the embodiment of the utility model further includes a communication unit 17. The communication unit 17 is communicably connected to the control unit 14 and the result analysis unit 15 and can receive a command from a remote operator via a network or the like. The remote operator is, for example, a staff of the Environmental Protection Bureau. When the communication unit 17 receives an instruction from the remote operator, the communication unit 17 sends the instruction to the control unit 14. The control unit 14 controls the reagent supply unit 11, the supply rewriting unit 12, and the detection unit 13 according to the command. After the result analysis unit 15 completes the determination, the communication unit 17 sends the determination result to the remote operator.

  In the embodiment according to the present invention, the pretreatment unit A or the pretreatment unit is added before the on-line sample is added to the reaction cell 24 via the air mixing pump 21 and the syringe 22 (that is, the reagent supply unit 11). Preprocess online samples with B. Also, the on-line sample may be directly added to the reaction cell 24 without being pretreated. After the detection is completed, the liquid after reaction is discharged to the waste fluid bucket 25 via the air mixing pump 21 and the syringe 22.

  Further, as shown in FIG. 3, in another embodiment according to the present utility model, a correction unit 18 is further provided. The correction unit 18 is communicably connected to the control unit 14 and the result analysis unit 15. After completing the determination, the result analysis unit 15 also sends out the determination result to the correction unit 18. If it is determined that the water quality analyzer does not meet the requirement, that is, the recovery rate of the internal standard exceeds the specified range, or the concentration of the reagent and / or the detection sample detected by the detection unit 13 and the control standard solution If the difference between concentration and concentration exceeds the specified range, correct the water quality analyzer.

  Specifically, when it is determined that the water quality analyzer does not meet the requirement, the correction unit 18 sends a correction command to the control unit 14. The control unit 14 controls the reagent supply unit 11, the supply rewriting unit 12, and the detection unit 13 so that the detection unit 13 detects the light intensity corresponding to the control standard solution having two or more sets of different concentrations according to the command. And a new standard curve is created based on the concentration of the control standard solution and the corresponding light intensity.

  As a result, when the water quality analyzer does not meet the requirements due to aging of the light source, adhesion of foreign matter inside the reaction cell 24, etc., a standard curve can be newly created, and the water quality analyzer Satisfy standard requirements such as monitoring technical specifications.

  In the embodiment according to the present invention, the functions of the control unit 14, the result analysis unit 15, the storage unit 16, the communication unit 17, and the correction unit 18 may be realized by software or hardware. Alternatively, it may be realized by cooperation of hardware and software.

  Although the embodiments of the present invention have been described above, the embodiments are only illustrative and do not have an intention to limit the scope of the present invention. These embodiments can be implemented in various other forms, and various omissions, replacements, changes and combinations can be made without departing from the scope of the present invention. These embodiments and modifications thereof are included in the scope and spirit of the utility model, and are also included in the utility model described in the claims and the equivalent scope thereof.

  Reference Signs List 1 water quality analyzer, 11 reagent supply unit, 12 supply rewriting unit, 13 detection unit, 14 control unit, 15 result analysis unit, 16 storage unit, 17 communication unit, 18 correction unit, 21 air mixing pump, 22 syringe, 23 multi Port valve, 24 reaction cells, 25 waste buckets, 26 multiport valves, 27 photoelectric sensors, 28 light sources.

Claims (8)

A reagent supply unit in communication with the reaction cell of the water quality analyzer via a flow path and supplying various reagents and / or detection samples to the reaction cell;
A supply rewriting unit disposed in the flow path, between the reagent supply unit and the reaction cell, and rewriting the flow path to rewrite the various reagents and / or the detection sample flowing into the reaction cell; ,
A detection unit disposed with respect to the reaction cell and detecting the reagent and / or the detection sample flowing into the reaction cell;
A result analysis unit connected communicably to the detection unit, receiving a detection result detected by the detection unit, and determining whether the detection result is a normal value;
The reagent supply unit, the supply rewrite unit, and the detection unit are communicably connected, and the reagent supply command, the supply rewrite instruction, and the detection command are instructed by the operator to the reagent supply unit, the supply rewrite unit, And a control unit that sends out each of the detection units,
Water quality analyzer characterized by that. And a communication unit communicably connected to the control unit and the result analysis unit,
The command is a command from a remote operator received by the communication unit,
When the communication unit receives the command, the communication unit sends the command to the control unit, and after the result analysis unit completes the judgment, the communication unit sends the judgment result to the remote operator.
The water quality analyzer according to claim 1. The detection unit includes a light source and a photoelectric sensor.
The light source emits detection light to the inside of the reaction cell from the surface on one side of the reaction cell,
The photoelectric sensor is disposed on the other side of the reaction cell, facing the light source, receives the detection light transmitted through the reaction cell, and detects the light intensity of the detection light.
The result analysis unit calculates the concentration of the reagent and / or the detection sample based on the light intensity and a standard curve indicating the relationship between the light intensity and the concentration, and the concentration of the reagent and / or the detection sample To determine if is a normal value,
The water quality analyzer according to claim 1, characterized in that. The reagent includes an internal standard solution,
The result analysis unit calculates an internal standard recovery rate according to the concentration of the reagent and / or the detection sample, and the concentration of the reagent and / or the detection sample is normal when the recovery rate of the internal standard is within a prescribed range. It is determined to be a value,
The water quality analyzer according to claim 3. The reagent includes a control standard solution,
The result analysis unit calculates the difference between the concentration of the reagent and / or the detection sample and the concentration of the control standard solution, and when the difference is within a prescribed range, the concentration of the reagent and / or the detection sample Is determined to be normal,
The water quality analyzer according to claim 3, characterized in that. And a correction unit communicably connected to the control unit and the result analysis unit,
The result analysis unit sends the determination result to the correction unit,
When the internal symbol recovery rate exceeds a prescribed range, the correction unit sends a correction command to the control unit.
The water quality analyzer according to claim 4. And a correction unit communicably connected to the control unit and the result analysis unit,
The result analysis unit sends the determination result to the correction unit,
If the difference exceeds a prescribed range, the correction unit sends a correction command to the control unit.
The water quality analyzer according to claim 5. The control unit
The reagent supply command, the supply rewrite command, and the detection command so that the detection unit detects the light intensity corresponding to the control standard solution having two or more sets of different concentrations when the correction command from the correction unit is received. Are respectively sent to the reagent supply unit, the supply rewriting unit, and the detection unit,
The standard curve is newly prepared according to the concentration of the control standard solution and the corresponding light intensity,
The water quality analyzer according to claim 6 or 7, wherein

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