Total chlorine on-line monitoring device

Abstract

The utility model provides a total chlorine on-line monitoring device which comprises a control card, an on-line detection module and a reagent adding module, the online detection module comprises a detection main body, a water sample storage tank is arranged at the top of the detection main body, a detection unit is arranged in the detection main body, the detection unit comprises a colorimetric pool, a stirrer is arranged at the bottom of the colorimetric pool, and the colorimetric pool is communicated with the water sample storage tank through a control valve; a light transmitter and a light receiver corresponding to the colorimetric pool are arranged on two sides of the detection main body; the reagent adding module comprises a circulating pump, the circulating pump is connected with a reagent bottle and a colorimetric pool through a reagent pipeline, and the control valve, the light transmitter, the light receiver and the circulating pump are all connected with the control card; during detection, the control valve is opened, a water sample is introduced into the colorimetric pool, the light transmitter transmits standard light, and the light receiver acquires a first light signal; starting the circulating pump, introducing a reagent into the colorimetric pool, and acquiring a second optical signal by the optical receiver; the control card calculates the total chlorine content of the water sample according to the first optical signal and the second optical signal.

Description

Technical Field

[0001] This utility model relates to the field of water quality monitoring, and in particular to an online total chlorine monitoring device. Background Technology

[0002] Chlorine in water primarily originates from the chlorination of drinking water or wastewater to kill or inhibit microorganisms, and from the chlorination of electroplating wastewater to decompose toxic cyanides. However, chlorine is a highly volatile medium. In electroplating, drinking water, and wastewater treatment, insufficient chlorine content is insufficient to effectively kill viruses or inhibit microorganisms; conversely, excessive chlorine can combine with other substances to harm the human body, such as combining with phenol-containing water to form harmful chlorine compounds like chlorophenols. Therefore, accurate detection of total chlorine content in water is essential. Existing total chlorine detection devices have certain shortcomings in terms of structural design, detection accuracy, and ease of operation, failing to adequately meet practical detection needs.

[0003] Therefore, it is necessary to provide an online total chlorine monitoring device to effectively solve the above problems. Utility Model Content

[0004] This invention provides an online total chlorine monitoring device.

[0005] This utility model provides an online total chlorine monitoring device, including a control card, an online detection module, and a reagent addition module. The online detection module includes a detection body, a water sample storage tank on top of the detection body, a detection unit inside the detection body, and a colorimetric cell. A stirrer is located at the bottom of the colorimetric cell, and the colorimetric cell is connected to the water sample storage tank via a control valve. A light transmitter and a light receiver are located on opposite sides of the detection body corresponding to the colorimetric cell. The reagent addition module includes a circulation pump connected to a reagent bottle and the colorimetric cell via a reagent pipeline. The control valve, the light transmitter, the light receiver, and the circulation pump are all connected to and controlled by the control card. During detection, the control valve is opened to introduce a water sample into the colorimetric cell. The light transmitter emits standard light, and the light receiver acquires the first light signal after the standard light passes through the water sample and sends it to the control card. The circulation pump is started to introduce reagent into the colorimetric cell and stir it evenly. The light receiver acquires the second light signal after the standard light passes through the water sample with added reagent and sends it to the control card. The control card calculates the total chlorine content of the water sample based on the first and second light signals.

[0006] Preferably, a water inlet pipe is provided on the side of the detection body, and the water inlet pipe is connected to the water sample storage tank to introduce water sample into the water sample storage tank.

[0007] Preferably, an inlet valve is provided on the inlet pipe, and the inlet valve is a manual valve.

[0008] Preferably, the bottom of the detection body is provided with an overflow pipe, and the water inlet pipe introduces water sample into the water sample storage tank. When the liquid level in the water sample storage tank exceeds a set height, the water sample in the water sample storage tank is discharged from the overflow pipe, so that the liquid level in the water sample storage tank is maintained at the set height.

[0009] Preferably, the circulation pump is a dual-channel micro-circulation pump; there are two reagent bottles, namely a first reagent bottle and a second reagent bottle, which respectively store buffer solution and colorimetric reagent; the two channels of the circulation pump pump buffer solution and colorimetric reagent into the colorimetric cell through reagent tubing.

[0010] Preferably, the colorimetric cell is provided with a top cover, which is disposed on the top of the detection body. An injection port is provided through the top cover and connected to the reagent tubing, allowing the injection of buffer solution and colorimetric reagent into the colorimetric cell.

[0011] Preferably, a drain pipe is provided on the side of the colorimetric cell near the top, and the drain pipe is connected to the colorimetric cell; after the test is completed, the control valve is opened to continuously introduce water sample into the colorimetric cell, and the water sample with added reagent in the colorimetric cell is discharged from the drain pipe.

[0012] Preferably, the colorimetric cell is a transparent container made of quartz.

[0013] Preferably, it also includes a human-machine interface screen, which is connected to the control card for data interaction. The human-machine interface screen is used to input parameters and display detection results.

[0014] Preferably, it also includes a housing, in which the control card, the online detection module, and the reagent addition module are all housed.

[0015] Compared with the prior art, the technical solution of this utility model embodiment has the following beneficial effects:

[0016] The total chlorine online monitoring device of this utility model, by setting up a control card, an online detection module, and a reagent addition module, can realize automated and online detection of the total chlorine content in water samples, thus improving detection efficiency. It employs a detection method combining a colorimetric cell with a light transmitter and a light receiver, calculating the total chlorine content by comparing the changes in light signals before and after reagent addition, resulting in high detection accuracy. The design of the inlet pipe, overflow pipe, and sewage pipe makes the entry, exit, and storage of water samples more rational, facilitating the operation and maintenance of the device. The design of a dual-channel micro-circulation pump and two reagent bottles allows for precise addition of buffer solution and colorimetric reagent, further ensuring detection accuracy. The human-machine interface screen facilitates user input of parameters and viewing of detection results, making operation more convenient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model, not all embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the total chlorine online monitoring device in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the online detection module in an embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of the online detection module in an embodiment of this utility model.

[0021] In the picture:

[0022] 1. Human-computer interaction screen;

[0023] 2. Control card;

[0024] 3. Online detection module; 31. Detection body; 32. Water sample storage tank; 33. Detection unit; 331. Colorimetric cell; 332. Stirrer; 333. Light transmitter; 334. Light receiver; 35. Water inlet pipe; 351. Water inlet valve; 36. Overflow pipe; 37. Sewage discharge pipe;

[0025] 4. Reagent adding module; 41. Circulation pump; 42. Reagent tubing; 43. Reagent bottle; 431. First reagent bottle; 432. Second reagent bottle;

[0026] 5. Outer shell. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0029] In view of the problems existing in the prior art, this utility model provides an online total chlorine monitoring device.

[0030] Figure 1 This is a schematic diagram of the total chlorine online monitoring device in an embodiment of this utility model; Figure 2 This is a schematic diagram of the online detection module in an embodiment of the present invention; Figure 3 This is a cross-sectional view of the online detection module in an embodiment of this utility model.

[0031] Reference Figures 1-3 This application provides an online total chlorine monitoring device.

[0032] Specifically, the total chlorine online monitoring device provided in this application includes a control card 2, an online detection module 3, and a reagent addition module 4. The online detection module 3 includes a detection body 31, a water sample storage tank 32 is provided on the top of the detection body 31, and a detection unit 33 is provided in the detection body 31. The detection unit 33 includes a colorimetric cell 331, and a stirrer 332 is provided at the bottom of the colorimetric cell 331. The colorimetric cell 331 is connected to the water sample storage tank 32 via a control valve 34. A light transmitter 333 and a light receiver 334 are provided on both sides of the detection body 31 corresponding to the colorimetric cell 331. The reagent addition module 4 includes a circulation pump 41, which is connected to a reagent pipeline 42. The reagent bottle 43 and the colorimetric cell 331 are connected. The control valve 34, light transmitter 333, light receiver 334, and circulation pump 41 are all connected to the control card 2 and controlled by the control card 2. During detection, the control valve 34 is opened to introduce water sample into the colorimetric cell 331. The light transmitter 333 sends standard light, and the light receiver 334 obtains the first light signal after the standard light passes through the water sample and sends it to the control card 2. The circulation pump 41 is started to introduce reagent into the colorimetric cell 331 and stir it evenly. The light receiver 334 obtains the second light signal after the standard light passes through the water sample with added reagent and sends it to the control card 2. The control card 2 calculates the total chlorine content of the water sample based on the first and second light signals.

[0033] Calculating the total chlorine content of a water sample based on the first and second optical signals is existing technology. For reference, see application number CN202211053604.3, invention title: A colorimetric system for an analyzer with real-time switching between high and low concentrations and its usage method, and application number CN202211118555.7, invention title: A chemical oxygen demand detection system with automatic switching between high and low ranges. Further details will not be elaborated here.

[0034] In some embodiments, a water inlet pipe 35 is provided on the side of the detection body 31, and the water inlet pipe 35 is connected to the water sample storage tank 32 to introduce water sample into the water sample storage tank 32.

[0035] In some embodiments, an inlet valve 351 is provided on the inlet pipe 35, and the inlet valve 351 is a manual valve.

[0036] In some embodiments, the bottom of the detection body 31 is provided with an overflow pipe 36, and the water inlet pipe 35 introduces water sample into the water sample storage tank 32. When the liquid level in the water sample storage tank 32 exceeds the set height, the water sample in the water sample storage tank 32 is discharged from the overflow pipe 36, so that the liquid level in the water sample storage tank 32 is maintained at the set height.

[0037] In some embodiments, the circulation pump 41 is a dual-channel micro-circulation pump; there are two reagent bottles 43, namely a first reagent bottle 431 and a second reagent bottle 432, which respectively store buffer solution and colorimetric reagent; the two channels of the circulation pump 41 pump buffer solution and colorimetric reagent into the colorimetric cell 331 through the reagent tubing 43.

[0038] In some embodiments, a top cover is provided on the top of the colorimetric cell 331, the top cover is disposed on the top of the detection body 31, and an injection port is provided through the top cover. The injection port is connected to the reagent tubing 42, allowing buffer solution and colorimetric reagent to be injected into the colorimetric cell 331.

[0039] Specifically, the buffer solution is a mixed solution of disodium ethylenediaminetetraacetate (C10H14N2Na2O8), anhydrous disodium hydrogen phosphate (Na2HPO4), and potassium dihydrogen phosphate (KH2PO4).

[0040] Specifically, the colorimetric reagent is a mixed solution of disodium ethylenediaminetetraacetate (C10H14N2Na2O8) and N,N-diethyl-1,4-phenylenediamine sulfate DPD (C10H16N2·H2SO4).

[0041] In some embodiments, a drain pipe 37 is provided on the side of the colorimetric cell 331 near the top, and the drain pipe 37 is connected to the colorimetric cell 331; after the test is completed, the control valve 34 is opened to continuously introduce water sample into the colorimetric cell 331, and the water sample with added reagent in the colorimetric cell 331 is discharged from the drain pipe 37.

[0042] In some embodiments, the colorimetric cell 331 is a transparent container made of quartz.

[0043] In some embodiments, the system also includes a human-machine interface screen 1, which is connected to the control card 2 for data interaction. The human-machine interface screen 1 is used to input parameters and display detection results.

[0044] In some embodiments, the system also includes a housing 5, in which the control card 2, the online detection module 3, and the reagent addition module 4 are all disposed.

[0045] In actual use, the total chlorine online monitoring device provided in this application opens the inlet valve 351, and the inlet pipeline 35 continuously supplies water samples to the water sample storage tank 32. During detection, the control valve 34 is first opened to introduce water samples into the colorimetric cell 331. The light transmitter 333 sends standard light, and the light receiver 334 acquires the first light signal after the standard light passes through the water sample and sends it to the control card 2. Then, the circulation pump 41 is started to introduce buffer solution and colorimetric reagent into the colorimetric cell 331. At the same time, the stirrer 332 works to mix the water sample and reagent evenly. The light receiver 334 acquires the second light signal after the standard light passes through the water sample with added reagent and sends it to the control card 2. The control card 2 calculates the total chlorine content of the water sample based on the received first and second light signals and displays the results on the human-machine interface screen 1.

[0046] After completing one test, the control valve 34 is opened to continuously flow water sample into the colorimetric cell 331, and the water sample with added reagent in the colorimetric cell 331 is discharged from the drain pipe 37 for the next test.

[0047] In summary, the total chlorine online monitoring device provided in this application, through the configuration of control card 2, online detection module 3, and reagent addition module 4, enables automated online detection of total chlorine content in water samples, improving detection efficiency. The detection method employing a colorimetric cell 331 combined with a light transmitter 333 and a light receiver 334 calculates the total chlorine content by comparing changes in light signals before and after reagent addition, resulting in high detection accuracy. The design of the inlet pipe 35, overflow pipe 36, and sewage pipe 37 makes the entry, exit, and storage of water samples more rational, facilitating device operation and maintenance. The design of a dual-channel micro-circulation pump 41 and two reagent bottles 43 allows for precise addition of buffer solution and colorimetric reagent, further ensuring detection accuracy. The human-machine interface screen 1 facilitates user input of parameters and viewing of detection results, making operation more convenient.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A total chlorine online monitoring device, characterized in that, The system includes a control card, an online detection module, and a reagent addition module. The online detection module comprises a detection body with a water sample storage tank on top. A detection unit is located within the detection body, and the detection unit includes a colorimetric cell with a stirrer at the bottom. The colorimetric cell is connected to the water sample storage tank via a control valve. A light transmitter and a light receiver are located on either side of the detection body corresponding to the colorimetric cell. The reagent addition module includes a circulation pump connected to a reagent bottle and the colorimetric cell via reagent tubing. The control valve, the light transmitter, and the... Both the light receiver and the circulation pump are connected to and controlled by the control card. During detection, the control valve is opened to introduce a water sample into the colorimetric cell. The light transmitter sends standard light, and the light receiver acquires the first light signal after the standard light passes through the water sample and sends it to the control card. The circulation pump is started to introduce reagent into the colorimetric cell and stir evenly. The light receiver acquires the second light signal after the standard light passes through the water sample with added reagent and sends it to the control card. The control card calculates the total chlorine content of the water sample based on the first and second light signals.

2. The total chlorine online monitoring device according to claim 1, characterized in that, The detection body is provided with a water inlet pipe on its side, which is connected to the water sample storage tank to introduce water sample into the water sample storage tank.

3. The total chlorine online monitoring device according to claim 2, characterized in that, The water inlet pipe is equipped with a water inlet valve, which is a manual valve.

4. The total chlorine online monitoring device according to claim 2, characterized in that, The bottom of the detection body is provided with an overflow pipe, and the water inlet pipe introduces water sample into the water sample storage tank. When the liquid level in the water sample storage tank exceeds the set height, the water sample in the water sample storage tank is discharged from the overflow pipe, so that the liquid level in the water sample storage tank is maintained at the set height.

5. The total chlorine online monitoring device according to claim 1, characterized in that, The circulation pump is a dual-channel micro-circulation pump; there are two reagent bottles, namely a first reagent bottle and a second reagent bottle, which respectively store buffer solution and colorimetric reagent; the two channels of the circulation pump pump buffer solution and colorimetric reagent into the colorimetric cell through reagent tubing.

6. The total chlorine online monitoring device according to claim 5, characterized in that, The colorimetric cell is provided with a top cover, which is located on top of the detection body. An injection port is provided through the top cover and connected to the reagent tubing, allowing the injection of buffer solution and colorimetric reagent into the colorimetric cell.

7. The total chlorine online monitoring device according to claim 1, characterized in that, A drain pipe is provided on the side of the colorimetric cell near the top, and the drain pipe is connected to the colorimetric cell; after the test is completed, the control valve is opened to continuously introduce water sample into the colorimetric cell, and the water sample with added reagent in the colorimetric cell is discharged from the drain pipe.

8. The total chlorine online monitoring device according to claim 1, characterized in that, The colorimetric cell is a transparent container made of quartz.

9. The total chlorine online monitoring device according to claim 1, characterized in that, It also includes a human-machine interface screen, which is connected to the control card for data interaction. The human-machine interface screen is used to input parameters and display detection results.

10. The total chlorine online monitoring device according to claim 1, characterized in that, It also includes a housing, in which the control card, the online detection module, and the reagent addition module are all housed.

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