Water sample pretreatment device and method

Abstract

The invention discloses a water sample pretreatment device and method, and relates to the field of experimental equipment, the water sample pretreatment device comprises a rack, a pumping mechanism, a filtering mechanism, an adding mechanism and a detection mechanism; the rack is used for bearing the first container and the second container; the extraction mechanism is mounted on the rack, and the filtering mechanism is connected with the extraction mechanism; the extraction mechanism is used for extracting the stock solution in the first container and conveying the diluted stock solution to the second container through the filtering mechanism; the adding mechanism is used for adding liquid into the second container so as to dilute the filtered filtrate; the detection mechanism is used for detecting a first parameter of the stock solution and a second parameter of the filtrate; the first parameter is used for guiding the amount of the stock solution extracted from the first container by the extraction mechanism; the second parameter is used for guiding the amount of liquid added into the second container by the adding mechanism. The automation degree, the efficiency and the solution purity are high.

Description

Technical Field

[0001] The present invention relates to the field of experimental equipment, and in particular to a water sample pretreatment device and method. Background Art In the prior art, in order to adjust the obtained water sample to the target concentration range of the set conductivity, the water sample is first dissolved in a container, and the conductivity concentration of the water sample solution is first obtained using a measuring device. Then, the amount of liquid to be added is calculated based on the target concentration range, and the calculated liquid is gradually added to the water sample solution. After the water sample solution is diluted, the conductivity concentration of the diluted water sample solution is measured again until the diluted concentration meets the target concentration range.

[0002] The inventors found in their research that the water sample treatment device in the prior art has at least the following disadvantages: Each step is performed manually, which is labor-intensive and inefficient. In addition, impurities exist in the water sample, and the accuracy of the solution concentration is low. Summary of the Invention

[0003] The objects of the present invention include, for example, providing a water sample pretreatment device and method, which can improve the degree of automation of water sample processing, reduce labor intensity, improve work efficiency, and reduce the impact of human errors on water sample processing results; it can also improve the purity of the solution after the water sample is diluted.

[0004] The embodiments of the present invention can be implemented as follows: In a first aspect, the present invention provides a water sample pretreatment device for use with a first container and a second container, comprising: Rack, extraction mechanism, filtering mechanism, adding mechanism and detection mechanism; The frame is used to carry the first container and the second container; the extraction mechanism is installed on the frame, and the filtering mechanism is connected to the extraction mechanism; the extraction mechanism is used to extract the original liquid in the first container and can transfer the diluted original liquid to the second container through the filtering mechanism; the adding mechanism is used to add liquid to the second container to dilute the filtered liquid; The detection mechanism is used to detect a first parameter of the original liquid in the first container and a second parameter of the filtrate in the second container; the first parameter is used to guide the amount of original liquid extracted from the first container by the extraction mechanism; and the second parameter is used to guide the amount of liquid added to the second container by the addition mechanism.

[0005] In an optional embodiment, the frame is provided with a detection station, and the detection mechanism corresponds to the detection station; The frame includes a frame body and a movable plate, wherein the movable plate is movably mounted on the frame body, and the movable plate is used to carry the first container and the second container, and can drive the first container and the second container to move to the inspection station.

[0006] In an optional embodiment, the movable plate is rotatably connected to the rack body to adjust the relative positions of the first container and the second container.

[0007] In an optional embodiment, the frame further includes a drive assembly, which is mounted on the frame body; the extraction mechanism and the detection mechanism are both mounted on the drive assembly, and the drive assembly is used to drive the extraction mechanism and the detection mechanism to move relative to the frame body to adjust the relative positions of the extraction mechanism and the detection mechanism relative to the first container and the second container.

[0008] In an optional embodiment, the drive assembly includes a first telescopic unit and a second telescopic unit, the fixed portion of the first telescopic unit is mounted on the frame body, the fixed portion of the second telescopic unit is connected to the telescopic portion of the first telescopic unit, and the extraction mechanism and the detection mechanism are both mounted on the telescopic end of the second telescopic unit; The first telescopic unit is used to drive the second telescopic unit, the extraction mechanism and the detection mechanism to slide back and forth in a first direction; the second telescopic unit is used to drive the extraction mechanism and the detection mechanism to slide back and forth in a second direction perpendicular to the first direction.

[0009] In an optional embodiment, the extraction mechanism includes a telescopic device, a storage cylinder, a piston rod, a first pipeline, a second pipeline, a first valve, and a second valve; the fixed portion of the telescopic device and the storage cylinder are both connected to the telescopic portion of the second telescopic unit, the telescopic portion of the telescopic device is connected to the piston rod, and the piston rod is slidably connected to the storage cylinder; the first pipeline and the second pipeline are both connected to the rodless cavity of the storage cylinder; the first valve is provided on the first pipeline, and the second valve is provided on the second pipeline; the filtering mechanism is installed on the second pipeline; The first pipeline is used to cooperate with the first container; the second pipeline is used to cooperate with the second container.

[0010] In an optional embodiment, the water sample pretreatment device further includes a weighing mechanism, which is installed on the movable plate and is used to obtain the weight of the second container and the solution therein.

[0011] In an optional embodiment, the water sample pretreatment device further includes a heating mechanism, which is installed on the movable disk and is used to carry and heat the first container.

[0012] In an optional embodiment, the water sample pre-treatment device further includes a cleaning mechanism, which is installed on the frame and is used to clean the detection head of the detection mechanism.

[0013] In a second aspect, the present invention provides a water sample pretreatment method, using the water sample pretreatment device described in any one of the aforementioned embodiments, comprising the following steps: Step s100: obtaining a first parameter of the raw liquid in the first container using a detection mechanism; Step s200: extracting a set amount of the original liquid from the first container according to the first parameter using an extraction mechanism to obtain a first diluted liquid; Step s300: using the extraction mechanism to deliver a set amount of the first dilution liquid to the filtering mechanism, and after passing through the filtering mechanism, the first dilution liquid enters the second container to obtain a filtrate; Step s400: obtaining a second parameter of the filtrate using the detection mechanism; Step s500: using an adding mechanism to add liquid into the second container according to the second parameter to dilute the filtrate to obtain a second diluted liquid.

[0014] The beneficial effects of the embodiments of the present invention include, for example: In summary, the water sample pretreatment device provided in this embodiment, by combining an extraction mechanism, a filtering mechanism, an addition mechanism and a detection mechanism, can realize automated processing of water samples, with less manual participation, a high degree of automation, high efficiency, and high accuracy of the processing results. Specifically, the water sample stock solution is collected in a first container. The first parameter of the stock solution in the first container is obtained by using the detection mechanism. Since a certain amount of liquid, such as pure water, is stored in the extraction mechanism, then, based on the first parameter (including but not limited to the concentration value of the conductivity of the stock solution), the target concentration range of the conductivity and the certain amount of pure water, the amount of stock solution that needs to be sucked into the extraction mechanism is calculated. Next, the extraction mechanism is used to extract the certain amount of stock solution into the extraction mechanism and mix it with the pure water stored therein to obtain a first dilution solution. Since the stock solution contains impurities, the concentration and purity of the obtained first dilution solution are not high. Then, the extraction mechanism is operated to transport the first dilution liquid to the filtration mechanism, which filters impurities from the first dilution liquid to obtain a filtrate. The filtrate is then placed in a second container. The detection mechanism then acquires a second parameter of the filtrate in the second container (including but not limited to the conductivity concentration of the filtrate). Based on the volume of the filtrate in the second container, the target concentration range, and the second parameter, the amount of pure water to be added to the second container is calculated. Finally, the addition mechanism adds a predetermined amount of pure water to the second container. In this manner, by filtering impurities from the original liquid and then diluting the filtrate, the target liquid obtained is of high purity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 Schematic diagram of the water sample pretreatment device of this embodiment from a first perspective; Figure 2 for Figure 1 Schematic diagram of the local enlarged structure in; Figure 3 is a schematic diagram of the water sample pretreatment device of this embodiment from a second perspective; Figure 4 is a schematic diagram of the processing device of this embodiment from a first perspective; Figure 5 FIG. 4 is a schematic diagram of the processing device of this embodiment from a second perspective.

[0017] icon: 001-first container; 002-second container; 003-preset direction; 004-first direction; 005-second direction; 100-frame; 110-frame body; 120-movable disk; 130-servo module; 140-drive assembly; 141-first telescopic unit; 142-second telescopic unit; 143-mounting plate; 200-extraction mechanism; 210-retractor; 220-storage cylinder; 230-piston rod; 240-first pipeline; 250-second pipeline; 260-first valve; 270-second valve; 300-filtering mechanism; 400-adding mechanism; 500-detection mechanism; 510-first detection head; 520-second detection head; 600-weighing mechanism; 700-heating mechanism; 800-cleaning mechanism; 810-ultrasonic cleaning tank; 820-drying plate; 830-gas pipe. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0021] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0022] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0023] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0024] Please refer to Figure 1-Figure 5 This embodiment provides a water sample pretreatment device for use with a first container 001 and a second container 002, comprising: Frame 100, extraction mechanism 200, filtering mechanism 300, adding mechanism 400 and detection mechanism 500; The frame 100 is used to carry the first container 001 and the second container 002; the extraction mechanism 200 is installed on the frame 100, and the filtering mechanism 300 is connected to the extraction mechanism 200; the extraction mechanism 200 is used to extract the original liquid in the first container 001 and can transfer the diluted original liquid to the second container 002 through the filtering mechanism 300; the adding mechanism 400 is used to add liquid to the second container 002 to dilute the filtered liquid; The detection mechanism 500 is used to detect the first parameter of the original liquid in the first container 001 and the second parameter of the filtrate in the second container 002; the first parameter is used to guide the amount of original liquid extracted from the first container 001 by the extraction mechanism 200; the second parameter is used to guide the amount of liquid added to the second container 002 by the adding mechanism 400.

[0025] As mentioned above, the water sample pretreatment device provided in this embodiment is used as follows: A water sample stock solution is collected in a first container 001. A first parameter of the stock solution in the first container 001 is obtained using the detection mechanism 500. Since a fixed amount of liquid, such as pure water, is stored in the extraction mechanism 200, the amount of stock solution to be pumped into the extraction mechanism 200 is calculated based on the first parameter (the conductivity concentration value of the stock solution), the target conductivity concentration range, and the fixed amount of pure water. Next, the fixed amount of stock solution is pumped into the extraction mechanism 200 and mixed with the pure water stored therein to produce a first diluted solution. Due to impurities in the stock solution, the resulting first diluted solution is not highly concentrated or pure. Then, the extraction mechanism 200 continues to operate, transferring the first diluted liquid to the filtering mechanism 300. The filtering mechanism 300 filters impurities from the first diluted liquid to obtain a filtrate, which is then placed in the second container 002. The detection mechanism 500 then acquires a second parameter (concentration value of the conductivity of the filtrate) of the filtrate in the second container 002. Based on the volume of the filtrate in the second container 002, the target concentration range, and the second parameter, the amount of pure water to be added to the second container 002 is calculated. Finally, the addition mechanism 400 adds a predetermined amount of pure water to the second container 002. In this manner, by filtering impurities from the original liquid and then diluting the filtrate, the target liquid obtained is of high purity.

[0026] The following embodiments illustrate the details of the water sample pretreatment device of the present application by way of examples.

[0027] Please refer to Figure 1-Figure 5 In this embodiment, the water sample pre-treatment device optionally includes a rack 100 and processing units. The number of processing units may be multiple, and multiple processing units may be arranged side by side on the rack 100. Multiple processing units can simultaneously process multiple groups of water samples, thereby improving operational efficiency. For example, in this embodiment, the number of processing units is ten.

[0028] Please refer to Figure 1-Figure 3 Optionally, the frame 100 includes a frame body 110, a movable disk 120, a servo module 130, and a drive assembly 140. The servo module 130 includes a stepper motor and a push plate. The stepper motor is mounted on the frame body 110, the stepper motor is connected to the push plate, and the push plate is slidably connected to the frame body 110. The stepper motor can drive the push plate to reciprocate along the first direction 004. The number of drive assemblies 140 and the number of movable disks 120 are equal to the number of processing units. Multiple drive assemblies 140 are arranged side by side on the frame body 110. For example, multiple drive assemblies 140 are evenly spaced in a preset direction 003, and the push plate cooperates with multiple drive assemblies 140 at the same time. Each drive assembly 140 is correspondingly configured with a movable disk 120, and the movable disk 120 can be rotatably connected to the frame body 110. At the same time, two positioning grooves are provided on the movable disk 120, and the first container 001 and the second container 002 can be placed in the two positioning grooves respectively. When the movable disk 120 drives the first container 001 and the second container 002 to rotate, the first container 001 and the second container 002 are not easy to fall over.

[0029] At the same time, a detection station is provided on the frame body 110, and the movable plate 120 can drive the first container 001 and the second container 002 to rotate to the detection station.

[0030] Please refer to Figure 4-Figure 5 Optionally, the driving assembly 140 includes a first telescopic unit 141, a second telescopic unit 142, and a mounting plate 143. The fixed portion of the first telescopic unit 141 is mounted on the frame body 110, the mounting plate 143 is connected to the telescopic portion of the first telescopic unit 141, and the fixed portion of the second telescopic unit 142 is connected to the mounting plate 143. The first telescopic unit 141 can drive the second telescopic unit 142 and the mounting plate 143 to slide back and forth in the first direction 004; the second telescopic unit 142 can be telescoped in the second direction 005. At the same time, the push plate is simultaneously connected to the telescopic portions of multiple first telescopic units 141, and the push plate can simultaneously drive multiple first telescopic units 141 to slide back and forth in the first direction 004. Among them, the preset direction 003, the first direction 004, and the second direction 005 are perpendicular to each other.

[0031] It should be noted that the first telescopic unit 141 and the second telescopic unit 142 can both be configured as a cylinder, a hydraulic cylinder, or an electric push rod.

[0032] It is worth noting that each processing unit is used in conjunction with the corresponding first container 001 and second container 002. To facilitate processing and manufacturing, the structure of each processing unit can be set to be the same. In this embodiment, in order to avoid repetition and redundancy, one processing unit is used as an example for description.

[0033] Please refer to Figure 4-Figure 5 Optionally, the processing unit includes an extraction mechanism 200, a filtering mechanism 300, an addition mechanism 400, a detection mechanism 500, a weighing mechanism 600, a heating mechanism 700, and a cleaning mechanism 800. The extraction mechanism 200, the filtering mechanism 300, the addition mechanism 400, the detection mechanism 500, the weighing mechanism 600, the heating mechanism 700, and the cleaning mechanism 800 can all be mounted directly or indirectly on the frame 100. The extraction mechanism 200 is used to aspirate the raw liquid in the first container 001 and dilute the raw liquid. It can also transfer the diluted raw liquid to the filtering mechanism 300, and then from the filtering mechanism 300 to the second container 002. The detection mechanism 500 can detect parameters of the raw liquid and the filtrate in the second container 002, including conductivity, concentration, pH value, and density. The weighing mechanism 600 can obtain the weight of the second container 002 and the solution therein; the heating mechanism 700 can heat the solid sample to dissolve it into sample water. The adding mechanism 400 can add pure water to the filtrate in the second container 002 to dilute the filtrate to a set concentration.

[0034] During installation, the extraction mechanism 200 and the detection mechanism 500 are both mounted on the telescopic end of the second telescopic unit 142 and slidably engage with the mounting plate 143. The second telescopic unit 142 can drive the extraction mechanism 200 and the detection mechanism 500 to slide back and forth in the second direction 005, thereby adjusting the height of the extraction mechanism 200 and the detection mechanism 500 relative to the first container 001 and the second container 002, so that the extraction mechanism 200 and the detection mechanism 500 can be inserted into or removed from the first container 001 or the second container 002 as needed. At the same time, the first telescopic unit 141 can drive the mounting plate 143, the second telescopic unit 142, the extraction mechanism 200, and the detection mechanism 500 to slide back and forth in the first direction 004, thereby adjusting the position of the extraction mechanism 200 and the detection mechanism 500 relative to the first container 001 or the second container 002 in the first direction 004, thereby selectively inserting the extraction mechanism 200 or the detection mechanism 500 into the first container 001 or the second container 002 as needed.

[0035] During operation, the servo module 130 can simultaneously drive the telescopic portions of all first telescopic units 141 to move along the first direction 004, thereby driving the corresponding second telescopic units 142, the extraction mechanism 200, and the detection mechanism 500 to slide back and forth in the first direction 004 through the first telescopic units 141. The second telescopic units 142 can drive the extraction mechanism 200 and the detection mechanism 500 to slide back and forth in a second direction 005 that is perpendicular to the first direction 004.

[0036] Please refer to Figure 4-Figure 5 Optionally, the extraction mechanism 200 includes a telescoping device 210, a storage barrel 220, a piston rod 230, a first pipeline 240, a second pipeline 250, a first valve 260, and a second valve 270. The fixed portion of the telescoping device 210 and the storage barrel 220 are both connected to the telescoping portion of the second telescoping unit 142. The telescoping portion of the telescoping device 210 is connected to the piston rod 230, which is slidably connected to the storage barrel 220. The first pipeline 240 and the second pipeline 250 are both mounted at the bottom of the storage barrel 220 and communicate with the rodless cavity of the storage barrel 220. The first valve 260 is located on the first pipeline 240 and can open or block the first pipeline 240. The second valve 270 is located on the second pipeline 250 and can open or block the second pipeline 250. Both the first valve 260 and the second valve 270 can be solenoid valves, etc., to enable remote automatic control.

[0037] Optionally, the adding mechanism 400 includes a water pump and a water pipe, etc., which can transport pure water to the second container 002.

[0038] Optionally, the detection mechanism 500 may include a first detection head 510 and a second detection head 520. The first detection head 510 can obtain the concentration of the conductivity, and the second detection head 520 can obtain the pH value. The first detection head 510 and the second detection head 520 of the detection mechanism 500 can both be inserted into the first container 001 or the second container 002 at the same time. The detection mechanism 500 and the first pipeline 240 are arranged in a first direction 004 with an interval therebetween.

[0039] Optionally, the weighing mechanism 600 can be configured as an electronic scale. The weighing mechanism 600 can be installed on the movable plate 120 , and the second container 002 can be placed on the weighing mechanism 600 .

[0040] Optionally, the heating mechanism 700 includes a heating cup, which can be heated by microwaves and placed on the movable plate 120. The first container 001 can be placed in the heating cup.

[0041] Please refer to Figure 4-Figure 5Optionally, the cleaning mechanism 800 includes an ultrasonic cleaning tank 810, two drying plates 820, and two air pipes 830. The ultrasonic cleaning tank 810 is mounted on the frame body 110 and is located on a side of the detection mechanism 500 away from the extraction mechanism 200. The two drying plates 820 are mounted on opposite sides of the ultrasonic cleaning tank 810, and the two air pipes 830 are connected to the two drying plates 820, respectively. Both air pipes 830 can transport hot air, which is evenly blown out from the drying plates 820 to dry the first detection head 510 and the second detection head 520 after cleaning. That is, after the detection mechanism 500 obtains the first parameter of the raw liquid in the first container 001, it rises under the drive of the second telescopic unit 142. After leaving the top of the first container 001, the first telescopic unit 141 drives the detection mechanism 500 in the second direction 005, approaches the ultrasonic cleaning tank, and moves above the cleaning tank. The second telescopic unit 142 then drives the detection mechanism 500 down, allowing it to be cleaned in the ultrasonic cleaning tank 810. After cleaning, the detection mechanism 500 rises and is dried with hot air. The cleaned detection mechanism 500 is then used to test the solution in the second container 002 to prevent the solutions from crossing and affecting the accuracy of the test results.

[0042] The method of using the water sample pretreatment device provided in this embodiment is as follows: In the initial state, the first container 001 is located below the first pipeline 240, the second container 002 is located below the second pipeline 250, and the detection mechanism 500 corresponds to the position of the first container 001. When the sample water needs to be processed, the sample is placed in the first container 001, the heating mechanism 700 is started, and the sample in the first container 001 is dissolved to obtain the sample water stock solution. Then, the first parameter of the stock solution is obtained using the detection mechanism 500. The first parameter can be transmitted to the smart terminal, and the smart terminal can process the data to obtain the amount of stock solution required to be extracted by the extraction mechanism 200. According to the amount of stock solution, the first pipeline 240 is inserted into the first container 001, the first valve 260 is opened, the second valve 270 is closed, and the telescopic device 210 is used to extract the stock solution into the storage cylinder 220 to obtain the first dilution solution. Next, the first valve 260 is closed and the second valve 270 is opened, positioning the second pipeline 250 above the second container 002. The telescopic member 210 drives the piston rod 230 downward, allowing the first diluent in the storage cylinder 220 to be fed into the filtration mechanism 300. After filtration, the first diluent enters the second container 002 through the second pipeline 250, yielding a filtrate. The movable disk 120 is activated, rotating the second container 002 to the inspection station. The cleaned inspection mechanism 500 is used to obtain a second parameter of the filtrate in the second container 002. This second parameter can be transmitted to the smart terminal, which can then calculate the amount of pure water added to the second container 002. The addition mechanism 400 adds a predetermined amount of pure water to the second container 002, thereby obtaining a solution of the target concentration, which contains few impurities and is of high purity.

[0043] This embodiment also provides a water sample pretreatment method, using the water sample pretreatment device of the above embodiment, including the following steps: Step s100: using the detection mechanism 500 to obtain a first parameter of the stock solution in the first container 001; Step s200: extracting a set amount of the original solution from the first container 001 according to the first parameter using the extraction mechanism 200 to obtain a first diluted solution; Step s300: using the extraction mechanism 200 to deliver a set amount of the first dilution liquid to the filtering mechanism 300, and after passing through the filtering mechanism 300, the first dilution liquid enters the second container 002 to obtain a filtrate; Step s400: obtaining a second parameter of the filtrate using the detection mechanism 500; Step s500: using the adding mechanism 400 to add liquid into the second container 002 according to the second parameter to dilute the filtrate to obtain a second diluted liquid.

[0044] The first parameter includes but is not limited to conductivity concentration, pH value, solution density, etc.

[0045] The solution obtained by this method has high purity.

[0046] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A water sample pretreatment device for use with a first container (001) and a second container (002), characterized in that: include: A rack (100), an extraction mechanism (200), a filtering mechanism (300), an adding mechanism (400), and a detection mechanism (500); The frame (100) is used to carry the first container (001) and the second container (002); the extraction mechanism (200) is installed on the frame (100), and the filtering mechanism (300) is connected to the extraction mechanism (200); the extraction mechanism (200) is used to extract the original liquid in the first container (001), and can transport the diluted original liquid to the second container (002) through the filtering mechanism (300); the adding mechanism (400) is used to add liquid to the second container (002) to dilute the filtered liquid; The detection mechanism (500) is used to detect a first parameter of the original liquid in the first container (001) and a second parameter of the filtered liquid in the second container (002); the first parameter is used to guide the amount of original liquid extracted from the first container (001) by the extraction mechanism (200); and the second parameter is used to guide the amount of liquid added to the second container (002) by the addition mechanism (400).

2. The water sample pretreatment device according to claim 1, characterized in that: The frame (100) is provided with a detection station, and the detection mechanism (500) corresponds to the detection station; The frame (100) includes a frame body (110) and a movable plate (120), wherein the movable plate (120) is movably mounted on the frame body (110), and the movable plate (120) is used to carry the first container (001) and the second container (002), and can drive the first container (001) and the second container (002) to move to the inspection station.

3. The water sample pretreatment device according to claim 2, characterized in that: The movable disk (120) is rotatably connected to the frame body (110) to adjust the relative positions of the first container (001) and the second container (002).

4. The water sample pretreatment device according to claim 2, characterized in that: The frame (100) further includes a driving assembly (140), wherein the driving assembly (140) is mounted on the frame body (110); the extraction mechanism (200) and the detection mechanism (500) are both mounted on the driving assembly (140), and the driving assembly (140) is used to drive the extraction mechanism (200) and the detection mechanism (500) to move relative to the frame body (110) so as to adjust the relative positions of the extraction mechanism (200) and the detection mechanism (500) relative to the first container (001) and the second container (002).

5. The water sample pretreatment device according to claim 4, characterized in that: The driving assembly (140) includes a first telescopic unit (141) and a second telescopic unit (142), wherein a fixed portion of the first telescopic unit (141) is mounted on the frame body (110), and a fixed portion of the second telescopic unit (142) is connected to the telescopic portion of the first telescopic unit (141), and the extraction mechanism (200) and the detection mechanism (500) are both mounted on the telescopic end of the second telescopic unit (142); The first telescopic unit (141) is used to drive the second telescopic unit (142), the extraction mechanism (200) and the detection mechanism (500) to slide back and forth in a first direction (004); the second telescopic unit (142) is used to drive the extraction mechanism (200) and the detection mechanism (500) to slide back and forth in a second direction (005) perpendicular to the first direction (004).

6. The water sample pretreatment device according to claim 5, characterized in that: The extraction mechanism (200) includes a telescopic device (210), a storage cylinder (220), a piston rod (230), a first pipeline (240), a second pipeline (250), a first valve (260) and a second valve (270); the fixed portion of the telescopic device (210) and the storage cylinder (220) are both connected to the telescopic portion of the second telescopic unit (142), the telescopic portion of the telescopic device (210) is connected to the piston rod (230), and the piston rod (230) is slidably connected to the storage cylinder (220); the first pipeline (240) and the second pipeline (250) are both connected to the rodless cavity of the storage cylinder (220); the first valve (260) is provided on the first pipeline (240), and the second valve (270) is provided on the second pipeline (250); the filtering mechanism (300) is installed on the second pipeline (250); The first pipeline (240) is used to cooperate with the first container (001); The second pipeline (250) is used to cooperate with the second container (002).

7. The water sample pretreatment device according to any one of claims 2 to 6, characterized in that: The water sample pretreatment device further comprises a weighing mechanism (600), which is mounted on the movable disk (120) and is used to obtain the weight of the second container (002) and the solution therein.

8. The water sample pretreatment device according to any one of claims 2 to 6, characterized in that: The water sample pre-treatment device further comprises a heating mechanism (700), wherein the heating mechanism (700) is mounted on the movable disk (120), and the heating mechanism (700) is used to carry and heat the first container (001).

9. The water sample pretreatment device according to any one of claims 1 to 6, characterized in that: The water sample pre-treatment device further comprises a cleaning mechanism (800), wherein the cleaning mechanism (800) is mounted on the frame (100), and the cleaning mechanism (800) is used to clean the detection head of the detection mechanism (500).

10. A water sample pretreatment method, characterized in that: Using the water sample pretreatment device according to any one of claims 1 to 9 comprises the following steps: Step s100: using the detection mechanism (500) to obtain a first parameter of the stock solution in the first container (001); Step s200: extracting a set amount of stock solution from the first container (001) according to the first parameter using the extraction mechanism (200) to obtain a first diluted solution; Step s300: using the extraction mechanism (200) to transport a set amount of the first dilution liquid to the filtering mechanism (300), and after passing through the filtering mechanism (300), the first dilution liquid enters the second container (002) to obtain a filtrate; Step s400: using the detection mechanism (500) to obtain a second parameter of the filtrate; Step s500: using the adding mechanism (400) to add liquid into the second container (002) according to the second parameter to dilute the filtrate to obtain a second diluted liquid.

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