A fully automatic water quality detection analyzer

Abstract

The present application relates to water quality detection technical field, especially in a kind of full-automatic water quality detection analyzer, including shell module, liquid injection cleaning module, reagent module, pipette sample adding module, reaction detection module;The liquid injection cleaning module, reagent module, pipette sample adding module, reaction detection module are connected by circuit and liquid circuit pipe, all be located in the inside of the shell module, can carry out full-automatic detection analysis to the pH value, nitrite, hydrogen sulfide, ammonia nitrogen, dissolved oxygen, residual chlorine and multiple items of water quality.Through the design of the technical solution of the present application, when detecting, the water sample to be measured is placed into full-automatic water quality detection analyzer, the full-automatic detection analysis of multiple items of water quality can be realized, manual operation of experimental personnel is reduced, and detection efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of water quality testing technology, and in particular to a fully automated water quality testing and analysis instrument. Background Technology

[0002] With industrial development and the expansion of urbanization, the ecological environment is constantly facing severe challenges, and the risk of pollution to the most important water resources is also increasing. Therefore, the monitoring of water quality indicators has become an important link in ensuring water resource security.

[0003] Traditional water quality testing methods involve personnel sampling water sources and then relying on laboratory analysis to perform experiments on each test item. This process suffers from problems such as the need for manual sample addition or pipetting, reagent changes depending on the test item, complex procedures, long processing times, and low efficiency. Therefore, developing a fully automated water quality analyzer capable of rapidly detecting multiple water quality parameters, reducing manual operation, effectively improving testing efficiency, and automating the entire process from sample introduction to result output is of paramount importance. Summary of the Invention

[0004] The main objective of this invention is to provide a fully automated water quality testing and analysis instrument, which aims to solve the problems of frequent manual operation by laboratory personnel in water quality testing and analysis, such as adding samples or pipetting, changing reagents according to the project, complex experimental operation, long time consumption, and low detection efficiency.

[0005] To achieve the above objectives, the technical solution proposed by this invention is as follows:

[0006] A fully automated water quality testing and analysis instrument includes a housing module, a liquid injection and cleaning module, a reagent module, a liquid pipetting and sampling module, and a reaction detection module. The liquid injection and cleaning module, reagent module, liquid pipetting and sampling module, and reaction detection module are connected by circuits and liquid lines and are all located inside the housing module. It can perform fully automated testing and analysis of multiple items of water quality, such as pH value, nitrite, hydrogen sulfide, ammonia nitrogen, dissolved oxygen, and residual chlorine.

[0007] Preferably, the housing module includes a housing, a touch display assembly, a printing assembly, and a sample compartment; the housing has a front upper housing and a front lower housing, the printing assembly is located on the left side of the front lower housing, the sample compartment is located on the right side of the front lower housing, and the touch display assembly is located on the upper part of the front upper housing.

[0008] Preferably, the liquid injection cleaning module includes a plunger pump assembly, a diaphragm pump assembly, and a liquid circuit; the plunger pump assembly includes a plunger pump and a solenoid valve; the diaphragm pump assembly includes a first diaphragm pump and a second diaphragm pump; and the liquid circuit includes a first liquid circuit, a second liquid circuit, a third liquid circuit, a fourth liquid circuit, a fifth liquid circuit, and a sixth liquid circuit.

[0009] Preferably, the reagent module includes a reagent position base, a reagent cap assembly, and a rotary motor assembly; the reagent position base is provided with a reagent position slot, the reagent cap assembly is provided above the reagent position slot, the reagent cap assembly is connected to the rotary motor assembly, and the rotary motor assembly drives the reagent cap assembly to flip and rotate.

[0010] Preferably, the pipetting module is located between the reagent module and the reaction detection module. The pipetting module includes a pipetting needle assembly and a motor assembly. The pipetting needle assembly is connected to the motor assembly, and the motor assembly drives the pipetting needle assembly to move in an arc shape in the horizontal direction, move back and forth in the Y-axis direction, and move up and down in the Z-axis direction.

[0011] Preferably, the reaction detection module includes a reaction site component and a detection component; one end of the reaction site component is provided with a reaction cup slot and the other end is provided with a cleaning pool, the top surface of the reaction cup slot is open, and the left and right sides of the reaction cup slot are provided with multiple sets of detection holes corresponding to each other; the detection component is U-shaped and surrounds the bottom and sides of the reaction site component from below, and the detection component performs detection through the detection holes on the reaction cup slot.

[0012] Preferably, the motor assembly includes a Y-axis lead screw motor, a Z-axis lead screw motor, and a horizontal rotary motor. The Y-axis lead screw motor drives the dispensing needle assembly to move back and forth along the Y-axis direction, the Z-axis lead screw motor drives the dispensing needle assembly to move up and down along the Z-axis direction, and the horizontal rotary motor drives the dispensing needle assembly to move in an arc shape along the horizontal direction.

[0013] Preferably, the motor assembly is connected to the detection component in the reaction detection module, and the motor assembly drives the detection component to move back and forth along the reaction site component.

[0014] Compared with the prior art, the beneficial effects that the technical solution of the present invention can achieve are:

[0015] This invention proposes a fully automated water quality analyzer that solves the problems of existing water quality testing and analysis methods, such as frequent manual operation by laboratory personnel for sample addition or pipetting, reagent changes based on the test results, complex experimental operations, long processing times, and low detection efficiency. During testing, the water sample is placed into the fully automated water quality analyzer, which can achieve fully automated detection and analysis of multiple parameters including pH, nitrite, hydrogen sulfide, ammonia nitrogen, dissolved oxygen, and residual chlorine. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a fully automatic water quality testing and analysis instrument proposed in this invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of an embodiment of a fully automatic water quality testing and analysis instrument proposed in this invention;

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Housing module; 11. Upper front housing; 12. Lower front housing; 121. Sample position; 13. Touch screen assembly; 14. Printing assembly; 2. Liquid injection and cleaning module; 21. Plunger pump assembly; 211. Plunger pump; 212. Solenoid valve; 22. Diaphragm pump assembly; 221. First diaphragm pump; 222. Second diaphragm pump; 23. Liquid passage pipe; 231. First liquid passage pipe; 232. Second liquid passage pipe; 233. Third liquid passage pipe; 234. Fourth liquid passage pipe; 235. Fifth liquid passage pipe; 236. 1. Sixth liquid path tube; 3. Reagent module; 31. Reagent position base; 311. Reagent position slot; 32. Reagent cap assembly; 33. Rotary motor assembly; 4. Pipette module; 41. Pipette assembly; 42. Motor assembly; 421. Y-axis lead screw motor; 422. Z-axis lead screw motor; 423. Horizontal rotary motor; 424. Motor mounting bracket; 5. Reaction detection module; 51. Reaction position assembly; 511. Reaction cup slot; 512. Cleaning tank; 513. Detection port; 52. Detection assembly;

[0021] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that all directional or positional relationship indications (such as up, down, left, right, front, back, middle, horizontal, vertical, inside, X-axis, Y-axis, Z-axis, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0027] This invention proposes a fully automated water quality testing and analysis instrument.

[0028] As shown in the attached figures, in one embodiment of the fully automatic water quality testing and analysis instrument proposed in this invention, the fully automatic water quality testing and analysis instrument includes a housing module 1, a liquid injection and cleaning module 2, a reagent module 3, a liquid transfer and sampling module 4, and a reaction detection module 5; the liquid injection and cleaning module 2, the reagent module 3, the liquid transfer and sampling module 4, and the reaction detection module 5 are connected by circuits and liquid lines, and are all located inside the housing module 1, which can perform fully automatic testing and analysis of multiple items such as pH value, nitrite, hydrogen sulfide, ammonia nitrogen, dissolved oxygen, and residual chlorine in water quality. Specifically, in this embodiment, before automatic detection, a sample container containing the water sample to be tested is placed at the sample position 121 in the housing module 1. Reagents required for the test are placed in the reagent module 3; one or more reagents can be added according to the testing requirements. A reaction cup is placed in the reaction detection module 5. A virtual button is clicked on the touch screen component 13 in the housing module 1 to issue a detection command. The pipetting module 4 automatically picks up the water sample to be tested from the sample position 121 and the reagents from the reagent module 3, adding them to the reaction cup in the reaction detection module 5 for incubation. Based on the spectrophotometric measurement principle, utilizing the absorption characteristics of substances to specific wavelengths of light, the detection component 52 in the reaction detection module 5 measures the absorbance value of the reaction product in the reaction cup through the detection hole 513. The detection result is then calculated by comparing with a standard curve. Before each different reagent is picked up or before different tests are performed, the liquid injection cleaning module 2 cleans the pipetting needle component 41 in the pipetting needle module 4 through a liquid path tube to avoid cross-contamination.

[0029] Preferably, the housing module 1 includes a front upper housing 11, a front lower housing 12, a sample position 121, a touch display assembly 13, and a printing assembly 14; the printing assembly 14 is located on the left side of the front lower housing 12, the sample position 121 is located on the right side of the front lower housing 12, and the touch display assembly 13 is located on the upper part of the front upper housing 11. Specifically, in this embodiment, after automatic detection is completed, the printing component 14 can automatically print the detection results; the housing module 1 includes a front upper housing 11, a front lower housing 12, a sample position 121, a touch display assembly 13, and a printing component 14, and also includes a back housing, a left housing, a right housing, an upper housing, and a lower housing; the sample position 121 is used to place a sample container containing the water sample to be tested, and the front lower housing 12 can be opened or closed horizontally from the right side; when the front lower housing 12 is opened, the reagent slot 311 in the reagent module 3 exposes an interface for placing the reagents required for the project detection, and the reaction cup slot 511 in the reaction detection module 5 exposes an interface for placing the reaction cup; when the front lower housing 12 is closed, the sample container containing the water sample to be tested can be placed at the sample position 121. The water sample container has an opening above the sample position 121. The sampling needle assembly 41 in the pipetting module 4 enters the sample position 121 through this opening to transfer the water sample to be tested. The touch screen assembly 13 is located on the upper part of the front upper shell 11. The touch screen assembly 13 has a touch screen on the front and a circuit board and connection circuit connected to the touch screen on the back. The touch screen has virtual buttons for selecting detection items and issuing operation commands. Selectable detection items include: pH value, nitrite, hydrogen sulfide, ammonia nitrogen, dissolved oxygen, residual chlorine, etc. During automatic detection, one or more items can be selected as needed, and the detection command can be issued by clicking the virtual buttons on the touch screen.

[0030] Preferably, the liquid injection cleaning module 2 includes a plunger pump assembly 21, a diaphragm pump assembly 22, and a liquid passage pipe 23; the plunger pump assembly 21 includes a plunger pump 211 and a solenoid valve 212, the diaphragm pump assembly 22 includes a first diaphragm pump 221 and a second diaphragm pump 222, and the liquid passage pipe 23 includes a first liquid passage pipe 231, a second liquid passage pipe 232, a third liquid passage pipe 233, a fourth liquid passage pipe 234, a fifth liquid passage pipe 235, and a sixth liquid passage pipe 236. Specifically, in this embodiment, the first liquid passage 231 is connected to the first diaphragm pump 221, the second liquid passage 232 is connected to the first diaphragm pump 221 and the solenoid valve 212, the third liquid passage 233 is connected to the solenoid valve 212 and the plunger pump 211, the fourth liquid passage 234 is connected to the plunger pump 211 and the pipetting module 4, the fifth liquid passage 235 is connected to the pipetting module 4 and the second diaphragm pump 222, and the sixth liquid passage 236 is connected to the second diaphragm pump 222. During the automatic detection process, when performing the liquid injection cleaning operation, one end of the first liquid passage 231 is immersed in the cleaning solution, and the other end is connected to the first diaphragm pump 221. The first diaphragm pump 221 draws in the cleaning solution through the first liquid passage 231, and the cleaning solution enters the first diaphragm pump 221 and is transferred through the second liquid passage 232. The solenoid valve 212 opens the valve, allowing the cleaning fluid to pass through it into the third liquid line 233 and then be transmitted to the plunger pump 211. The cleaning fluid is then fed into the sampling needle assembly 41 in the pipetting module 4 via the fourth liquid line 234. The cleaning fluid is continuously transmitted to the sampling needle assembly 41, thus cleaning its interior. When the cleaning fluid is discharged, the first diaphragm pump 221 and the plunger pump 211 are not operating, the solenoid valve 212 is closed, and the second diaphragm pump 222 starts operating. The cleaning fluid again passes through the sampling needle assembly 41 into the fifth liquid line 235 and is transmitted to the second diaphragm pump 222. Finally, it is discharged through the sixth liquid line 236 connected to the second diaphragm pump 222. This cycle of injecting and discharging cleaning fluid achieves the automatic cleaning operation of the sampling needle assembly 41 by the liquid injection cleaning module 2.

[0031] Preferably, the reagent module 3 includes a reagent base 31, a reagent cap assembly 32, and a rotary motor assembly 33. The reagent base 31 has a reagent slot 311, and the reagent cap assembly 32 is located above the reagent slot 311. The reagent cap assembly 32 is connected to the rotary motor assembly 33, and the rotary motor assembly 33 drives the reagent cap assembly 32 to rotate. Specifically, in this embodiment, before automatic detection, the reagent is placed in the reagent slot 311 and fixed. During automatic detection, when the pipetting module 4 needs to remove the reagent, the rotary motor assembly 33 drives the reagent cap assembly 32 to rotate, so that the reagent cap assembly 32 is rotated to an upright state to avoid obstructing the reagent bottle opening placed in the reagent slot 311 in the reagent module 3. When detection stops, the rotary motor assembly 33 drives the reagent cap assembly 32 to rotate, so that the reagent cap assembly 32 is rotated to a horizontal state. At this time, the reagent cap assembly 32 covers the reagent bottle opening located in the reagent slot 311, thereby sealing the reagent.

[0032] Preferably, the pipetting module 4 is located between the reagent module 3 and the reaction detection module 5. The pipetting module 4 includes a pipetting needle assembly 41 and a motor assembly 42. The pipetting needle assembly 41 is connected to the motor assembly 42, and the motor assembly 42 drives the pipetting needle assembly 41 to move in an arc shape in the horizontal direction, move back and forth in the Y-axis direction, and move up and down in the Z-axis direction.Specifically, in this embodiment, during automatic detection, the motor assembly 42 drives the sampling needle assembly 41 to move in an arc shape along the horizontal direction between the reagent module 3 and the reaction detection module 5, so that the sampling needle assembly 41 moves horizontally above the reagent module 3, or horizontally above the reaction detection module 5; the motor assembly 42 drives the sampling needle assembly 41 to move back and forth along the Y-axis from its starting position, so that the sampling needle assembly can move forward to above the sample position 121 in the housing module 1, or backward to the starting position of the sampling needle assembly 41; when When the dispensing needle assembly 41 is above the reagent module 3, the motor assembly 42 drives the dispensing needle assembly 41 to move back and forth along the Y-axis, allowing the dispensing needle assembly 41 to move back and forth above the reagent module 3, thus moving it above the mouth of the reagent bottle placed in the reagent slot 311 in the reagent module 3. Similarly, when the dispensing needle assembly 41 is above the reaction detection module 5, the motor assembly 42 drives the dispensing needle assembly 41 to move back and forth along the Y-axis, allowing the dispensing needle assembly 41 to move back and forth above the reaction detection module 5, thus moving it above the reagent module 3. 1. The motor 42 can move above the cleaning tank 512 and the reaction cup slot 511 respectively; the motor 42 drives the sample dispensing needle assembly 41 to move up and down along the Z-axis, which can cause the sample dispensing needle assembly 41 to descend or rise. When the sample dispensing needle assembly 41 is above the sample position 121, the motor assembly 42 can drive the sample dispensing needle assembly 41 to descend into the sample container placed at the sample position 121 or rise out of the sample container; similarly, the motor assembly 42 can drive the sample dispensing needle assembly 41 to descend or rise at the reagent module 3 and at the reaction detection module 5; as described above, the motor assembly 42 can move up and down above the sample position 3 and at the reaction detection module 5 respectively. 2. The drive of the dispensing needle assembly 41 can move in an arc along the horizontal direction, move back and forth along the Y-axis, and move up and down along the Z-axis to transfer the water sample to be tested placed at the sample position 121 and the reagent placed at the reagent module 3 and add them to the reaction cup in the reaction detection module 5 for incubation reaction; similarly, the motor assembly 42 can drive the dispensing needle assembly 41 to move in an arc along the horizontal direction, move back and forth along the Y-axis, and move up and down along the Z-axis so that the dispensing needle assembly 41 enters the cleaning tank 512 in the reaction detection module 5 to facilitate the cleaning operation of the dispensing needle assembly 41.

[0033] Preferably, the reaction detection module 5 includes a reaction site component 51 and a detection component 52; the reaction site component 51 has a reaction cup slot 511 at one end and a cleaning pool 512 at the other end, the top surface of the reaction cup slot 511 is open, and the left and right sides of the reaction cup slot 511 are provided with a plurality of corresponding detection holes 513; the detection component 52 is U-shaped and surrounds the bottom and sides of the reaction site component 51 from below, and the detection component 52 performs detection through the detection holes 513 on the reaction cup slot 511. Specifically, in this embodiment, during automatic detection, the reaction cup is placed in the reaction cup slot 511. The reaction cup has multiple independent reaction dishes, and each reaction dish corresponds to a detection hole 513. The top surface of the reaction cup slot 511 is open to facilitate the entry of the sample needle assembly 41 into the reaction dish of the reaction cup. The cleaning pool 512 is used to buffer and store the cleaning solution injected by the temporary injection cleaning module 2 during automatic cleaning of the sample needle assembly 41. The detection assembly 52 also includes a light source emitting end and a light source receiving end. The light source emitting end and the light source receiving end are connected in a U-shape and surround the bottom and side of the reaction position assembly 51. During automatic detection, using the optical measurement principle, the light source emitting end emits light of a specific wavelength, which passes through the detection hole 513 on one side of the reaction cup slot 511 and irradiates the reaction dish of the reaction cup. The light is then transmitted through the liquid in the reaction dish and through the detection hole 513 on the other side of the reaction cup slot 511 to reach the light source receiving end. The light source receiving end converts the received light signal into an electrical signal and transmits it through the circuit to the touch screen assembly 13 for analysis and calculation to obtain the detection result.

[0034] Preferably, the motor assembly 42 includes a Y-axis lead screw motor 421, a Z-axis lead screw motor 422, a horizontal rotary motor 423, and a motor mounting bracket 424; the Y-axis lead screw motor 421 drives the sample dispensing needle assembly 41 to move back and forth along the Y-axis direction, the Z-axis lead screw motor 422 drives the sample dispensing needle assembly 41 to move up and down along the Z-axis direction, and the horizontal rotary motor 423 drives the sample dispensing needle assembly 41 to move in a horizontal arc shape along the horizontal direction.Specifically, in this embodiment, during automatic detection, the horizontal rotary motor 423 first drives the dispensing needle assembly 41 to move in an arc shape along the horizontal direction, so that the dispensing needle assembly 41 moves above the reagent placed in the reagent slot 311. Then, the Y-axis lead screw motor 421 drives the dispensing needle assembly 41 to move back and forth along the Y-axis direction so that the dispensing needle in the dispensing needle assembly 41 is directly above the reagent bottle opening. Then, the Z-axis lead screw motor 422 drives the dispensing needle assembly 41 to move downward along the Z-axis direction so that the dispensing needle enters the reagent in the reagent bottle. At this time, the diaphragm pump assembly 22 in the liquid injection and cleaning module 2 is not working, the solenoid valve 212 is closed, and the plunger pump... 211 is activated. Since the third liquid line tube 233 connects the dispensing needle assembly 41 and the plunger pump 211, the plunger pump 211 draws the reagent into the dispensing needle assembly 41 and the third liquid line tube 233, thus realizing the reagent transfer operation. Then, the Z-axis lead screw motor 422 drives the dispensing needle assembly 41 to move upward along the Z-axis away from the reagent bottle. The horizontal rotation motor 423 drives the dispensing needle assembly 41 to move above the reaction cup slot 511 at the reaction detection module 5. The Y-axis lead screw motor 421 drives the dispensing needle assembly 41 to move along the Y-axis to directly above the opening of the reaction dish placed in the reaction cup slot 511. Finally, The Z-axis lead screw motor 422 drives the sample dispensing needle assembly 41 downwards into the reaction vessel. At this time, the plunger pump assembly 21 in the liquid injection and cleaning module 2 is not working, the solenoid valve 212 is closed, and the plunger pump 211 starts to discharge the reagents retained in the sample dispensing needle assembly 41 and the third liquid line tube 233 and add them to the reaction vessel, thereby realizing the reagent addition operation. This operation is repeated to automatically transfer reagents for various items from the reagent module 3 and add them to different independent reaction vessels in the reaction detection module 5. Similarly, the Y-axis lead screw motor 422 drives the sample dispensing needle assembly 41 forward to the sample position 121 in the housing module 1, and the Z-axis lead screw... Motor 422 drives the sample dispensing needle assembly 41 to move downwards, enter the sample container through the opening above the sample position 121, and then move upwards out of the sample container, thereby completing the operation of removing the water sample to be tested. Then, the Y-axis lead screw motor 421, the horizontal rotation motor 423, and the Z-axis lead screw motor 422 drive the sample dispensing needle assembly 41 in sequence to add the water sample to be tested into the reaction vessel of the reaction cup at the reaction detection module 5. Similarly, the Y-axis lead screw motor 421, the horizontal rotation motor 423, and the Z-axis lead screw motor 422 drive the sample dispensing needle assembly 41 in sequence to the cleaning tank 512 on the reaction detection module 5 for cleaning.

[0035] Preferably, the motor assembly 42 is connected to the detection component 52 in the reaction detection module 5, and the motor assembly 42 drives the detection component 52 to move back and forth along the reaction position component 51. Specifically, in this embodiment, the detection component 52 is U-shaped, surrounding the bottom and sides of the reaction position component 51 from below. One end of the U-shape of the detection component 52 is connected to the motor mounting bracket 424. During automatic detection, when the Y-axis lead screw motor 421 drives the motor mounting bracket 424 to move back and forth along the Y-axis, the detection component 52 can be driven to move back and forth along the Y-axis as well, thereby causing the detection component 52 to move back and forth along the reaction position component 51. The detection component 52 moves sequentially to the detection hole 513, stops, and performs measurement.

[0036] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A fully automatic water quality testing and analysis instrument, characterized in that, It includes a shell module, a liquid injection and cleaning module, a reagent module, a liquid pipetting and sampling module, and a reaction detection module. The liquid injection and cleaning module, reagent module, liquid pipetting and sampling module, and reaction detection module are connected by circuits and liquid lines and are all located inside the shell module. It can perform fully automated detection and analysis of multiple items such as pH value, nitrite, hydrogen sulfide, ammonia nitrogen, dissolved oxygen, and residual chlorine in water.

2. The fully automatic water quality testing and analysis instrument according to claim 1, characterized in that, The housing module includes a housing, a touch display assembly, a printing assembly, and a sample position; the housing has a front upper housing and a front lower housing, the printing assembly is located on the left side of the front lower housing, the sample position is located on the right side of the front lower housing, and the touch display assembly is located on the upper part of the front upper housing.

3. The fully automatic water quality testing and analysis instrument according to claim 1, characterized in that, The liquid injection cleaning module includes a plunger pump assembly, a diaphragm pump assembly, and a liquid circuit; the plunger pump assembly includes a plunger pump and a solenoid valve; the diaphragm pump assembly includes a first diaphragm pump and a second diaphragm pump; and the liquid circuit includes a first liquid circuit, a second liquid circuit, a third liquid circuit, a fourth liquid circuit, a fifth liquid circuit, and a sixth liquid circuit.

4. The fully automatic water quality testing and analysis instrument according to claim 1, characterized in that, The reagent module includes a reagent position base, a reagent cap assembly, and a rotary motor assembly. The reagent position base is provided with a reagent position slot, and the reagent cap assembly is provided above the reagent position slot. The reagent cap assembly is connected to the rotary motor assembly, and the rotary motor assembly drives the reagent cap assembly to rotate.

5. The fully automatic water quality testing and analysis instrument according to claim 1, characterized in that, The liquid pipetting module is located between the reagent module and the reaction detection module. The liquid pipetting module includes a pipetting needle assembly and a motor assembly. The pipetting needle assembly is connected to the motor assembly, and the motor assembly drives the pipetting needle assembly to move in an arc shape in the horizontal direction, move back and forth in the Y-axis direction, and move up and down in the Z-axis direction.

6. The fully automatic water quality testing and analysis instrument according to claim 1, characterized in that, The reaction detection module includes a reaction site component and a detection component; the reaction site component has a reaction cup slot at one end and a cleaning tank at the other end, the top surface of the reaction cup slot is open, and the left and right sides of the reaction cup slot are provided with multiple sets of detection holes corresponding to each other; the detection component is U-shaped and surrounds the bottom and sides of the reaction site component from below, and the detection component performs detection through the detection holes on the reaction cup slot.

7. The fully automatic water quality testing and analysis instrument according to claim 5, characterized in that, Also includes: The motor assembly includes a Y-axis lead screw motor, a Z-axis lead screw motor, a horizontal rotary motor, and a motor mounting bracket. The Y-axis lead screw motor drives the dispensing needle assembly to move back and forth along the Y-axis direction, the Z-axis lead screw motor drives the dispensing needle assembly to move up and down along the Z-axis direction, and the horizontal rotary motor drives the dispensing needle assembly to move in an arc shape along the horizontal direction.

8. The fully automatic water quality testing and analysis instrument according to claim 7, characterized in that, Also includes: The motor assembly is connected to the detection component in the reaction detection module, and the motor assembly drives the detection component to move back and forth along the reaction site component.

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