Water quality detector

Abstract

The embodiment of the application relates to the technical field of water quality detection, and discloses a water quality detector, which comprises a water tank, a reagent bottle, a sampling mechanism and a cuvette. The sampling mechanism comprises a rotating device, a first vertical sliding device, a second vertical sliding device and a syringe device, the syringe device and the second vertical sliding device are both fixed to the first vertical sliding device, and the first vertical sliding device is fixed to the rotating device; the rotating device drives the first vertical sliding device to rotate, so that the syringe device is moved above the water tank, the reagent bottle or the cuvette; the first vertical sliding device drives the second vertical sliding device to move up and down, so that the needle of the syringe device enters or moves out of the water tank, the reagent bottle or the cuvette; the second vertical sliding device drives the push rod of the syringe device to move up and down to carry out sampling and sample injection; and the cuvette carries out water quality detection on the water sample to be detected. The application avoids pipeline blockage and valve wear.

Description

Technical Field

[0001] This application relates to the field of water quality testing technology, specifically to a water quality testing instrument. Background Technology

[0002] Water quality testing is a crucial measure to safeguard human health, protect the ecological environment, meet industrial water needs, and ensure the safety of agricultural irrigation. Drinking water quality directly impacts human health; polluted water can cause various diseases. The quality of natural water bodies affects the survival of aquatic organisms and the ecological balance; pollution can damage ecosystems. Industrial production requires water of specific qualities to ensure product quality and smooth process operation. Polluted agricultural irrigation water can damage the soil and affect the quality of agricultural products.

[0003] When the concentration of colored substances in a solution varies, the depth of the solution's color will change accordingly. Colorimetry is a method of water quality testing that utilizes this principle, determining the content of chemical substances in the water by comparing the depth of color. When measuring water quality using colorimetry, a quantitative amount of the water sample to be tested and a quantitative amount of reagent are typically added, followed by selective high-temperature digestion. After adding the reagent, the chemical substances in the water sample react with the reagent to form colored compounds, causing a change in the water's color. The color of the water varies depending on the concentration of the chemical substance; therefore, the concentration of the chemical substance can be determined by visually comparing the water sample color with the color of a standard solution of known concentration using a colorimeter or other instruments. Detectable chemical substances include total phosphorus, total nitrogen, ammonia nitrogen, nitrate nitrogen, nitrite, heavy metals, etc.

[0004] In practice, a relatively simple method is to use a peristaltic pump to extract water samples and different reagents into a container for digestion and colorimetric analysis, which is low-cost. Another method is to use a plunger pump and different rotary valves or drain valves to quantitatively extract the mixed water sample and reagents for colorimetric measurement, which is more expensive. Yet another method is the laboratory method, in which operators use a pipette to quantitatively extract water samples and reagents, manually mix them, and then digest and perform colorimetric analysis.

[0005] In water quality testing solutions using peristaltic pumps, plunger pumps, rotary valves, or drain valves, different reagents used for measurement must be delivered to the cuvette through the same pipeline. Different reagents can remain in the pipeline and undergo chemical reactions, potentially clogging the pipeline and affecting the delivery of the water sample or reagents. Furthermore, because the water sample and reagents are delivered through the same pipeline, valves are required to control the delivery of the water sample or different reagents. Frequent valve opening and closing will cause wear and tear on the valve's sealing surfaces, damaging the valve.

[0006] Ensuring smooth delivery of water samples or reagents to be tested in water quality analyzers while avoiding valve damage is a problem that needs to be solved. Utility Model Content

[0007] In view of the above problems, this application provides a water quality tester that enables smooth delivery of the water sample or reagent to be tested in the water quality tester and avoids valve damage.

[0008] According to one aspect of the embodiments of this application, a water quality analyzer is provided, including a water tank, a reagent bottle, a sampling mechanism, and a cuvette; wherein...

[0009] The water tank is used to hold the water sample to be tested;

[0010] The medicine bottle is used to contain medicine;

[0011] The sampling mechanism includes a rotating device, a first vertical sliding device, a second vertical sliding device, and a syringe device. The syringe device and the second vertical sliding device are both fixed to the first vertical sliding device, and the first vertical sliding device is fixed to the rotating device.

[0012] The rotating device is used to drive the first vertical sliding device, the second vertical sliding device and the syringe device to rotate as a whole, so that the syringe device moves above the water tank, the medicine bottle or the cuvette;

[0013] The first vertical sliding device is used to drive the second vertical sliding device and the syringe device to move upward or downward as a whole, so that the needle of the syringe device enters or exits the water tank, the medicine bottle or the cuvette;

[0014] The second vertical sliding device is used to drive the plunger of the syringe device to move upward, so that the syringe device can draw liquid from the water tank or the medicine bottle. The second vertical sliding device is also used to drive the plunger of the syringe device to move downward, so that the syringe device can inject liquid into the cuvette.

[0015] The cuvette is used to test the water quality of the water sample to be tested.

[0016] Optionally, the syringe device includes a first syringe and a second syringe, wherein the capacity of the first syringe is greater than the capacity of the second syringe, the first syringe is used to draw and inject the water sample to be tested, and the second syringe is used to draw and inject the reagent.

[0017] Optionally, the rotating device includes a first driving part, a rotating shaft, and a first fixing part. The rotating shaft is fixedly connected to the output end of the driving part. The first end of the first fixing part is sleeved and fixed to the rotating shaft. The second end of the first fixing part is fixedly connected to the first vertical sliding device. The first driving part is used to drive the rotating shaft to rotate.

[0018] Optionally, the first vertical sliding device includes a first base, a second driving part, and a first slider. The first base is fixed to the second end of the first fixing part, and the first base has a first slide rail. The first slider is slidably connected to the first slide rail, and the second driving part is used to drive the first slider to slide along the first slide rail.

[0019] The slider is fixed with a connecting part, and the second vertical sliding device and the syringe barrel are both fixed to the connecting part.

[0020] Optionally, the second vertical sliding device includes a second base, a third driving part, and a second slider. The second base is fixed to the connecting part, and the second base has a second slide rail. The second slider is slidably connected to the second slide rail.

[0021] The second slider is fixed with a pushing part, which is connected to the plunger of the syringe;

[0022] The third driving unit is used to drive the second slider to slide along the second slide rail, thereby causing the pushing unit to move up or down, so that the syringe plunger moves up or down.

[0023] Optionally, the pushing part is provided with a stepped groove, and the head of the push rod is embedded in the stepped groove.

[0024] Optionally, the cuvette includes an outer casing and a first circuit board, a second circuit board, and an inner casing located inside the outer casing, wherein the first circuit board and the second circuit board are located on both sides of the inner casing and are arranged opposite to each other;

[0025] A droplet sensor and a colorimetric sensor are arranged vertically from top to bottom on the side of the first circuit board facing the inner box. A first light source and a second light source are arranged vertically from top to bottom on the side of the second circuit board facing the inner box.

[0026] On the two side walls of the inner box, a first optical light guide component and a second optical light guide component are respectively provided at the positions corresponding to the first light source and the droplet sensor. The light emitted by the first light source passes through the first optical light guide component and the second optical light guide component to reach the droplet sensor, so as to measure the number of droplets in the water sample or reagent to be tested flowing between the first optical light guide component and the second optical light guide component.

[0027] A third optical light guide component and a fourth optical light guide component are respectively provided on the two side walls of the inner box, corresponding to the positions of the second light source and the colorimetric sensor. The light emitted by the second light source passes through the third optical light guide component and the fourth optical light guide component to reach the colorimetric sensor, so as to perform colorimetric measurement on the water sample to be tested and the solution after mixing the reagent inside the inner box.

[0028] Optionally, the water quality analyzer further includes a magnetic stirring device, which is fixed to the rotating device. The rotating device is also used to drive the magnetic stirring device to rotate below the reagent bottle or the cuvette, thereby rotating the stirring rotor inside the reagent bottle or the cuvette to stir the liquid inside the reagent bottle or the cuvette.

[0029] Optionally, the rotating device further includes a second fixing part, the first end of which is sleeved and fixed to the rotating shaft, and the second end of which is fixedly connected to the magnetic stirring device.

[0030] Optionally, the magnetic stirring device is also equipped with an RFID reader. There are multiple medicine bottles, and each medicine bottle is equipped with an RFID tag. The RFID reader is used to identify the RFID tag to identify the medicine inside the medicine bottle.

[0031] In this embodiment, the water sample and reagent are drawn up by rotating a syringe. The delivery of the measuring liquid does not involve pipelines. The pipelines in the water quality analyzer are not involved in the delivery of the measuring liquid, thus avoiding chemical reactions between reagents that could block the pipelines and prevent the measuring liquid from being delivered smoothly. Furthermore, the components of the water quality analyzer used to deliver the measuring liquid do not include valves, thus avoiding the problem of valves being easily damaged when used with different measuring liquids.

[0032] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0033] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0034] Figure 1 This is a schematic diagram of the external structure of the water quality analyzer according to an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of the external structure of the water quality analyzer according to an embodiment of this application from another perspective;

[0036] Figure 3 This is a schematic diagram of the internal structure of the water quality analyzer according to an embodiment of this application;

[0037] Figure 4 This is a schematic diagram of the internal structure of the water quality analyzer according to another embodiment of this application;

[0038] Figure 5 This is a side view of the sampling mechanism according to an embodiment of this application;

[0039] Figure 6 This is a three-dimensional structural diagram of the sampling mechanism according to an embodiment of this application;

[0040] Figure 7 This is a partial structural diagram of the sampling mechanism according to an embodiment of this application;

[0041] Figure 8 This is a schematic diagram of the structure of the cuvette according to an embodiment of this application;

[0042] Figure 9 This is a schematic diagram of the internal structure of the cuvette according to an embodiment of this application;

[0043] Figure 10 This is a cross-sectional view of the internal structure of the cuvette according to an embodiment of this application.

[0044] The reference numerals in the detailed embodiments are as follows:

[0045] Water quality testing instrument 100;

[0046] 10. Outer shell; 11. Top plate; 12. Side plate; 13. Bottom plate; 14. Lower mounting plate; 15. Upper mounting plate;

[0047] Water tank 20; water inlet 21; water outlet 22;

[0048] 30 medicine bottles;

[0049] Sampling mechanism 40; Rotating device 41; First drive unit 411; Rotating shaft 412; First fixing part 413; First end 413a of the first fixing part; Second end 413b of the first fixing part; Connecting plate 413c; Second fixing part 414; First end 414a of the second fixing part; Second end 414b of the second fixing part; First vertical sliding device 42; First base 421; Second drive unit 422; First slider 423; First slide rail 4211; Connecting part 424; Second vertical sliding device 43; Second base 431; Third drive unit 432; Second slider 433; Second slide rail 4311; Pushing part 434; Stepped groove 4341; Syringe device 44; First syringe 44a; Second syringe 44b; Needle 441; Push rod 442; Syringe 443;

[0050] Cuvette 50; Outer housing 51; First circuit board 52; Droplet sensor 521; Colorimetric sensor 522; Second circuit board 53; First light source 531; Second light source 532; Inner housing 54; Liquid inlet 551; Drain outlet 552; First optical light guide component 56; Second optical light guide component 57; Third optical light guide component 58; Fourth optical light guide component 59;

[0051] First peristaltic pump 61; Second peristaltic pump 62;

[0052] Magnetic stirring device 70;

[0053] Cleaning water bottle 80; Cleaning water inlet 81;

[0054] Display device 90. Detailed Implementation

[0055] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0057] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0058] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0059] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, representing any combination of the listed objects. For example, "A and / or B" can represent three possibilities: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0060] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0061] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0062] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0063] This application provides a water quality analyzer that measures the water quality of a water sample using a colorimetric method. In this water quality analyzer, the water sample and reagents (hereinafter collectively referred to as the measuring liquid) are drawn up by rotating a syringe. The measuring liquid is not transported through pipelines; the pipelines in the water quality analyzer are not involved in the transport of the measuring liquid. This avoids chemical reactions between reagents that could block the pipelines and prevent the measuring liquid from being transported smoothly. Furthermore, the components of the water quality analyzer used to transport the measuring liquid do not include valves, thus avoiding the problem of valves being easily damaged when used with different measuring liquids.

[0064] The water quality analyzer of this application embodiment can detect the content of ammonia nitrogen, nitrite nitrogen, water hardness, alkalinity, chemical oxygen demand (COD), total nitrogen, total phosphorus, residual chlorine and heavy metals in the water sample to be tested.

[0065] Figure 1 This is a schematic diagram of the external structure of the water quality analyzer 100 according to an embodiment of this application. Figure 2 This is a schematic diagram of the external structure of the water quality analyzer 100 according to another embodiment of this application. Figure 3 This is a schematic diagram of the internal structure of the water quality analyzer 100 according to an embodiment of this application. Figure 4 This is a schematic diagram of the internal structure of the water quality analyzer 100 according to another embodiment of this application.

[0066] like Figures 1 to 4 As shown, a water quality analyzer 100 according to an embodiment of this application includes a housing 10 and a water tank 20, a reagent bottle 30, a sampling mechanism 40 and a cuvette 50 disposed within the housing 10.

[0067] The outer casing 10 includes a top plate 11, four side plates 12, and a bottom plate 13, and is rectangular in shape. The water tank 20 and the sampling mechanism 40 are fixed to the bottom plate 13. A lower mounting plate 14 is also provided inside the outer casing 10, to which the reagent bottle 30 and the cuvette 50 are fixed. The bottom plate 13 and the lower mounting plate 14 facilitate the fixing of these components, preventing movement that could disrupt the test.

[0068] The water quality analyzer 100 can be placed on land. The water quality analyzer 100 also includes a pumping device (not shown in the figure) that draws water samples from a pool into a water tank 20. The pumping device can be a submersible pump. An inlet 21 is provided on one side of the water tank 20, and the submersible pump is connected to the inlet 21 via a pipe to draw the water samples into the water tank 20. The water tank 20 is used to hold the water samples. The submersible pump can draw water samples periodically and quantitatively, enabling timed monitoring of the water samples. A water intake 22 is provided on the top of the water tank 20, through which the sampling mechanism 40 collects the water samples.

[0069] The reagent bottle 30 is used to contain the reagent. The number of reagent bottles 30 is set according to the actual testing needs, and can be one or more. When there are multiple reagent bottles 30, each reagent bottle 30 contains a different reagent. The reagent is liquid. In the embodiment shown in the figure, four reagent bottles 30 are provided. The top of the reagent bottle 30 has a top seal cap, and the middle part of the top seal cap is made of a soft material such as rubber or silicone. The needle 441 of the syringe can pierce the middle part of the top seal cap.

[0070] Figure 5 This is a side view of the sampling mechanism 40 according to an embodiment of this application. Figure 6 This is a three-dimensional structural diagram of the sampling mechanism 40 according to an embodiment of this application. Figure 7 This is a partial structural schematic diagram of the sampling mechanism 40 according to an embodiment of this application.

[0071] like Figures 5 to 7 As shown, please refer to the following: Figure 3 and Figure 4 The sampling mechanism 40 includes a rotating device 41, a first vertical sliding device 42, a second vertical sliding device 43, and a syringe device 44. The syringe device 44 and the second vertical sliding device 43 are both fixed to the first vertical sliding device 42, and the first vertical sliding device 42 is fixed to the rotating device 41.

[0072] The syringe device 44 may include one or more syringes. In the embodiment shown in the figure, the syringe device 44 includes two syringes, namely a first syringe 44a and a second syringe 44b. When the water sample to be tested is subjected to colorimetric water quality testing, the required amount of water sample is greater than the required amount of reagent. Therefore, the capacity of the first syringe 44a is greater than the capacity of the second syringe 44b. The first syringe 44a draws and injects the water sample to be tested, and the second syringe 44b draws and injects the reagent. The horizontal distance (d) between the first syringe 44a and the second syringe 44b and the axis of rotation 412 is equal.

[0073] The rotating device 41 drives the first vertical sliding device 42, the second vertical sliding device 43 and the syringe device 44 to rotate as a whole, so that the syringe device 44 moves above the water tank 20, the medicine bottle 30 or the cuvette 50.

[0074] The rotating device 41 includes a first driving part 411, a rotating shaft 412, and a first fixing part 413. The water quality analyzer 100 also includes an upper mounting plate 15, which is located above the lower mounting plate 14, and the first driving part 411 is fixed to the upper mounting plate 15. The top end of the rotating shaft 412 is fixedly connected to the output end of the driving part 411, and the bottom end of the rotating shaft 412 is rotatably connected to the base plate 13. The first end 413a of the first fixing part 413 is sleeved and fixed to the rotating shaft 412, and the second end 413b of the first fixing part 413 is fixedly connected to the first vertical sliding device 42. The first end 413a of the first fixing part 413 is a sleeve, and the second end 413b is a plate-like structure. The first end 413a and the second end 413b are connected by a connecting plate 413c. The water tank 20, the medicine bottle 30, and the cuvette 50 are arranged along a circle centered on the axis of rotation 412. The radius of the circle is equal to the aforementioned horizontal distance (d), meaning that the horizontal distance between the water tank 20, the medicine bottle 30, and the cuvette 50 and the axis of rotation 412 is equal to the horizontal distance between the first syringe 44a and the second syringe 44b and the axis of rotation 412. Therefore, when the first drive unit 411 drives the rotating shaft 412 to rotate, it can move the syringe device 44 above the water tank 20, the medicine bottle 30, or the cuvette 50. For example, it can move the first syringe 44a above the water tank 20 or the cuvette 50, and move the second syringe 44b above the medicine bottle 30 or the cuvette 50.

[0075] The first vertical sliding device 42 drives the second vertical sliding device 43 and the syringe device 44 to move upward or downward as a whole, so that the needle 441 of the syringe device 44 enters or exits the water tank 20, the medicine bottle 30 or the cuvette 50.

[0076] The first vertical sliding device 42 includes a first base 421, a second driving part 422, and a first slider 423. The first base 421 is fixed to the second end 413b of the first fixing part 413. The first base 421 has a first slide rail 4211, which is arranged vertically. The first slider 423 is slidably connected to the first slide rail 4211. The second driving part 422 drives the first slider 423 to slide along the first slide rail 4211.

[0077] The first slider 423 is fixed with a connecting part 424, and the second vertical sliding device 43 and the syringe barrel 443 are both fixed to the connecting part 424.

[0078] The second vertical sliding device 43 drives the push rod 442 of the syringe device 44 to move upward, so that the syringe device 44 draws liquid from the water tank 20 or the medicine bottle 30. The second vertical sliding device 43 also drives the push rod 442 of the syringe device 44 to move downward, so that the syringe device 44 injects liquid into the cuvette 50.

[0079] The second vertical sliding device 43 includes a second base 431, a third driving part 432, and a second slider 433. The second base 431 is fixed to the connecting part 424 and has a second slide rail 4311 arranged vertically. The second slider 433 is slidably connected to the second slide rail 4311. A pushing part 434 is fixed on the second slider 433 and is connected to the syringe plunger 442. The third driving part 432 drives the second slider 433 to slide along the second slide rail 4311, causing the pushing part 434 to move upward or downward, so that the syringe plunger 442 moves upward or downward. In this embodiment, two pushing parts 434 are provided, corresponding to the first syringe 44a and the second syringe 44b, respectively.

[0080] Each pusher 434 is provided with a stepped groove 4341. The head of each syringe plunger 442 is respectively embedded in its corresponding stepped groove 4341. By providing the stepped groove 4341, the syringe plunger 442 is less prone to shaking, making it easier to push and pull the syringe plunger 442.

[0081] Figure 8 This is a schematic diagram of the structure of the cuvette 50 according to an embodiment of this application. Figure 9 This is a schematic diagram of the internal structure of the cuvette 50 according to an embodiment of this application. Figure 10 This is a cross-sectional view of the internal structure of the cuvette 50 according to an embodiment of this application.

[0082] like Figures 8 to 10 As shown, the cuvette 50 is used for water quality testing of the water sample to be tested. The cuvette 50 includes an outer casing 51 and a first circuit board 52, a second circuit board 53, and an inner casing 54 located inside the outer casing 51. The first circuit board 52 and the second circuit board 53 are located on both sides of the inner casing 54 and are arranged opposite to each other. The cuvette 50 has a liquid inlet 551 that runs through the outer casing 51 and the inner casing 54. The sampling mechanism 40 can inject the water sample to be tested and the reagent through the liquid inlet 551.

[0083] A droplet sensor 521 and a colorimetric sensor 522 are vertically spaced from top to bottom on the side of the first circuit board 52 facing the inner housing 54. A first light source 531 and a second light source 532 are vertically spaced from top to bottom on the side of the second circuit board 53 facing the inner housing 54. The first light source 531 can be an infrared LED (IR LED), and the second light source 532 can be an RGB LED (RGB LED). Accordingly, the droplet sensor 521 includes an infrared photodiode (IR PD), and the colorimetric sensor 522 includes an RGB photodiode (RGB PD).

[0084] On the two side walls of the inner housing 54, a first optical light guide component 56 and a second optical light guide component 57 are respectively provided at the positions corresponding to the first light source 531 and the droplet sensor 521. The light emitted by the first light source 531 passes through the first optical light guide component 56 and the second optical light guide component 57 to reach the droplet sensor 521, so as to measure the number of droplets of the water sample or reagent to be tested flowing between the first optical light guide component 56 and the second optical light guide component 57.

[0085] On the two side walls of the inner chamber 54, a third optical light guide component 58 and a fourth optical light guide component 59 are respectively provided at the positions corresponding to the second light source 532 and the colorimetric sensor 522. The light emitted by the second light source 532 passes through the third optical light guide component 58 and the fourth optical light guide component 59 to reach the colorimetric sensor 522, so as to measure the chemical content of the solution after mixing the water sample and the reagent inside the inner chamber 54 by colorimetry.

[0086] The first optical light guide component 56, the second optical light guide component 57, the third optical light guide component 58 and the fourth optical light guide component 59 mentioned above can be quartz light guide columns.

[0087] By setting the first optical light guide component 56, the second optical light guide component 57, the third optical light guide component 58, and the fourth optical light guide component 59, the entrance of the first optical light guide component 56 is close to the first light source 531, the entrance of the third optical light guide component 58 is close to the second light source 532, the outlet of the second optical light guide component 57 is close to the droplet sensor 521, and the outlet of the fourth optical light guide component 59 is close to the colorimetric sensor 522, so that the light path reaches the sensor through the optical light guide components as much as possible, reducing the amount of light that is emitted and does not reach the sensor, thereby improving the detection accuracy.

[0088] The cuvette 50 is also provided with a drain outlet 552 on its side bottom. The drain outlet 552 is connected to the first peristaltic pump 61 through a pipe (not shown in the figure). After the measurement is completed, the liquid in the cuvette 50 is discharged through the first peristaltic pump 61.

[0089] like Figure 3 and Figure 4As shown, if the medicine in the medicine bottle 30 is left for a long time, sediment may form, affecting the syringe's absorption and the concentration of the absorbed medicine. The water quality analyzer 100 also includes a magnetic stirring device 70, and the rotating device 41 includes a second fixing part 414. The first end 414a of the second fixing part 414 is sleeved and fixed to the rotating shaft 412, and the second end 414b of the second fixing part 414 is fixedly connected to the magnetic stirring device 70 to fix the magnetic stirring device 70 to the rotating shaft 412. While driving the syringe device 44 to rotate above the medicine bottle 30 or cuvette 50, the rotating device 41 also simultaneously drives the magnetic stirring device 70 to rotate below the medicine bottle 30 or cuvette 50, causing the stirring rotor inside the medicine bottle 30 or cuvette 50 to rotate to stir the liquid inside the medicine bottle 30 or cuvette 50. After stirring for several seconds, the liquid is then drawn up through the syringe. This method ensures that the medication in the vial 30 is not in a sedimented state before being drawn up, thus avoiding any impact on the syringe's absorption and the concentration of the drawn medication.

[0090] In some embodiments, if there are multiple medicine bottles 30, an RFID reader may also be provided on the magnetic stirring device 70. Each medicine bottle 30 is equipped with an RFID tag, for example, an RFID tag is placed on the bottom of the medicine bottle 30. The RFID reader identifies the RFID tag to identify the medicine inside the medicine bottle 30. When the magnetic stirring device 70 rotates to the bottom of a certain medicine bottle 30, the RFID reader identifies the RFID tag, thereby identifying the medicine inside the medicine bottle 30.

[0091] The water quality analyzer 100 also includes a cleaning water bottle 80, which can be purified water. The purified water can be used to clean the cuvette 50, syringe, and for background measurements before colorimetric analysis. The cleaning water bottle 80 has a top cap, the middle part of which is made of a soft material such as rubber or silicone. The syringe needle 441 can pierce the middle part of the top cap to draw cleaning water for cleaning the syringe. A cleaning water inlet 81 is located on one side of the cleaning water bottle 80. The cleaning water inlet 81 is connected to a second peristaltic pump 62 via a pipe (not shown in the figure), and the second peristaltic pump 62 is connected to a cleaning water tank (not shown in the figure) via a pipe (not shown in the figure). When the cleaning water is depleted, the second peristaltic pump 62 can draw cleaning water from the cleaning water tank to replenish the cleaning water bottle 80.

[0092] like Figure 1 As shown, a display device 90 is also provided on one side of the housing 10 for displaying water quality test results. This eliminates the need to transmit the test results to other electronic devices with displays, allowing users to intuitively understand the results. The display device 90 can be an LED display screen.

[0093] The first drive unit 411, the second drive unit 422 and the third drive unit 432 in the embodiments of this application can be driven by pneumatic pressure, hydraulic pressure, electric motor and mechanical methods, for example, the three drive units are stepper motors.

[0094] The following describes the usage process of the water quality analyzer 100. Before sampling, the plungers 442 of the two syringes are located at the front end of the syringe 443 (below the syringe shown in the figure).

[0095] S0. Turn on the submersible pump and draw the water sample to be tested into the water tank 20.

[0096] S1. The first drive unit 411 drives the rotating shaft 412 to rotate, causing the first syringe 44a to rotate above the water tank 20.

[0097] S2. The second drive unit 422 drives the first slider 423 to move down, which in turn moves the first syringe 44a down, so that the needle 441 of the first syringe 44a moves down from the water inlet 22 into the water tank 20.

[0098] S3. The third drive unit 432 drives the second slider 433 to move upward, which in turn drives the push rod 442 of the first syringe 44a to move upward to draw up the water sample to be tested.

[0099] S4. The second drive unit 422 drives the first slider 423 to move upward, thereby moving the first syringe 44a upward to remove it from the water tank 20.

[0100] After sampling is completed, the submersible pump stops or reverses, emptying the water sample in tank 20 by gravity.

[0101] S5. The first driving unit 411 drives the rotating shaft 412 to rotate, causing the first syringe 44a to rotate above the cuvette 50.

[0102] S6. The second driving unit 422 drives the first slider 423 to move down, causing the first syringe 44a to move down until its needle 441 is near the liquid inlet 551 of the cuvette 50, either above, at, or below the liquid inlet 551.

[0103] S7. The third drive unit 432 drives the second slider 433 to move downward, which in turn moves the push rod 442 of the first syringe 44a downward to inject the water sample to be tested into the inner chamber 54 of the cuvette 50. During the injection of the water sample, the number of droplets is detected by the droplet sensor 521.

[0104] If the needle 441 of the first syringe 44a is above the liquid inlet 551 of the cuvette 50, then step S8 is executed directly. If the needle 441 of the first syringe 44a is at or below the liquid inlet 551 of the cuvette 50, then the second driving unit 422 needs to drive the first slider 423 to move upward, thereby moving the first syringe 44a upward to remove it from the cuvette 50.

[0105] S8. The first drive unit 411 drives the rotating shaft 412 to rotate, causing the second syringe 44b to rotate above the first medicine bottle 30. Simultaneously, the magnetic stirring device 70 rotates to below the first medicine bottle 30, causing the stirring rotor inside the first medicine bottle 30 to rotate, mixing the first medicine inside the first medicine bottle 30 to prevent sedimentation. An RFID reader reads the first RFID tag on the first medicine bottle 30 to identify the first medicine inside the first medicine bottle 30.

[0106] S9. The second driving unit 422 drives the first slider 423 to move down, which in turn moves the second syringe 44b down to pierce the top seal of the first medicine bottle 30, and the needle 441 of the second syringe 44b enters the first medicine bottle 30.

[0107] S10. The third drive unit 432 drives the second slider 433 to move upward, which in turn drives the push rod 442 of the second syringe 44b to move upward to draw the first medicine in the first medicine bottle 30.

[0108] S11. The second driving unit 422 drives the first slider 423 to move upward, which in turn moves the second syringe 44b upward, causing the needle 441 of the second syringe 44b to move out of the first medicine bottle 30.

[0109] S12. The first driving unit 411 drives the rotating shaft 412 to rotate, thereby rotating the second syringe 44b to above the cuvette 50.

[0110] S13. The second drive unit 422 drives the first slider 423 to move down, which in turn moves the second syringe 44b down to the vicinity of the liquid inlet 551 of the cuvette 50, either above, at, or below the liquid inlet 551.

[0111] S14. The third drive unit 432 drives the second slider 433 to move downward, which in turn moves the push rod 442 of the second syringe 44b downward to inject the first reagent into the inner chamber 54 of the cuvette 50. During the injection of the first reagent, the number of droplets is detected by the droplet sensor 521.

[0112] If the needle 441 of the second syringe 44b is above the liquid inlet 551 of the cuvette 50, then step S8 is executed directly. If the needle 441 of the second syringe 44b is at or below the liquid inlet 551 of the cuvette 50, then the second driving unit 422 needs to drive the first slider 423 to move upward, thereby moving the second syringe 44b upward to remove it from the cuvette 50.

[0113] According to the other reagents required for the test, draw up the other reagents and inject them into cuvette 50 following the procedures in steps S8 to S14. Finally, measure the content of chemical substances in the water sample to be tested using colorimetric sensor 522.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application 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. These 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 application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A water quality analyzer, characterized in that, Includes a water tank, reagent bottles, sampling mechanism, and cuvettes; among which, The water tank is used to hold the water sample to be tested; The medicine bottle is used to contain medicine; The sampling mechanism includes a rotating device, a first vertical sliding device, a second vertical sliding device, and a syringe device. The syringe device and the second vertical sliding device are both fixed to the first vertical sliding device, and the first vertical sliding device is fixed to the rotating device. The rotating device is used to drive the first vertical sliding device, the second vertical sliding device and the syringe device to rotate as a whole, so that the syringe device moves above the water tank, the medicine bottle or the cuvette; The first vertical sliding device is used to drive the second vertical sliding device and the syringe device to move upward or downward as a whole, so that the needle of the syringe device enters or exits the water tank, the medicine bottle or the cuvette; The second vertical sliding device is used to drive the plunger of the syringe device to move upward, so that the syringe device can draw liquid from the water tank or the medicine bottle. The second vertical sliding device is also used to drive the plunger of the syringe device to move downward, so that the syringe device can inject liquid into the cuvette. The cuvette is used to test the water quality of the water sample to be tested.

2. The water quality analyzer according to claim 1, characterized in that, The syringe device includes a first syringe and a second syringe, wherein the capacity of the first syringe is greater than that of the second syringe, the first syringe is used to draw and inject the water sample to be tested, and the second syringe is used to draw and inject the reagent.

3. The water quality analyzer according to claim 1, characterized in that, The rotating device includes a first driving part, a rotating shaft, and a first fixing part. The rotating shaft is fixedly connected to the output end of the driving part. The first end of the first fixing part is sleeved and fixed to the rotating shaft. The second end of the first fixing part is fixedly connected to the first vertical sliding device. The first driving part is used to drive the rotating shaft to rotate.

4. The water quality analyzer according to claim 3, characterized in that, The first vertical sliding device includes a first base, a second driving part and a first slider. The first base is fixed to the second end of the first fixed part. The first base has a first slide rail. The first slider is slidably connected to the first slide rail. The second driving part is used to drive the first slider to slide along the first slide rail. The slider is fixed with a connecting part, and the second vertical sliding device and the syringe barrel are both fixed to the connecting part.

5. The water quality analyzer according to claim 4, characterized in that, The second vertical sliding device includes a second base, a third driving part, and a second slider. The second base is fixed to the connecting part, and the second base has a second slide rail. The second slider is slidably connected to the second slide rail. The second slider is fixed with a pushing part, which is connected to the plunger of the syringe; The third driving unit is used to drive the second slider to slide along the second slide rail, thereby causing the pushing unit to move up or down, so that the syringe plunger moves up or down.

6. The water quality analyzer according to claim 5, characterized in that, The pushing part is provided with a stepped groove, and the head of the push rod is embedded in the stepped groove.

7. The water quality analyzer according to claim 1, characterized in that, The cuvette includes an outer casing and a first circuit board, a second circuit board, and an inner casing located inside the outer casing. The first circuit board and the second circuit board are located on both sides of the inner casing and are arranged opposite to each other. A droplet sensor and a colorimetric sensor are arranged vertically from top to bottom on the side of the first circuit board facing the inner box. A first light source and a second light source are arranged vertically from top to bottom on the side of the second circuit board facing the inner box. On the two side walls of the inner box, a first optical light guide component and a second optical light guide component are respectively provided at the positions corresponding to the first light source and the droplet sensor. The light emitted by the first light source passes through the first optical light guide component and the second optical light guide component to reach the droplet sensor, so as to measure the number of droplets in the water sample or reagent to be tested flowing between the first optical light guide component and the second optical light guide component. A third optical light guide component and a fourth optical light guide component are respectively provided on the two side walls of the inner box, corresponding to the positions of the second light source and the colorimetric sensor. The light emitted by the second light source passes through the third optical light guide component and the fourth optical light guide component to reach the colorimetric sensor, so as to perform colorimetric measurement on the water sample to be tested and the solution after mixing the reagent inside the inner box.

8. The water quality analyzer according to claim 3, characterized in that, The water quality analyzer also includes a magnetic stirring device, which is fixed to the rotating device. The rotating device is also used to drive the magnetic stirring device to rotate below the medicine bottle or the cuvette, thereby rotating the stirring rotor inside the medicine bottle or the cuvette to stir the liquid inside the medicine bottle or the cuvette.

9. The water quality analyzer according to claim 8, characterized in that, The rotating device further includes a second fixing part, the first end of which is sleeved and fixed to the rotating shaft, and the second end of which is fixedly connected to the magnetic stirring device.

10. The water quality analyzer according to claim 8, characterized in that, The magnetic stirring device is also equipped with an RFID reader. There are multiple medicine bottles, and each medicine bottle is equipped with an RFID tag. The RFID reader is used to identify the RFID tag to identify the medicine inside the medicine bottle.

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