Automatic sampling and storing device suitable for carbon flux simulation box

Abstract

The utility model discloses an automatic sampling and storing device suitable for a carbon flux simulation box, and relates to the technical field of carbon flux simulation. The device comprises a base, an experimental water tank, a constant low-temperature box, a tray, a timing controller, a rotating motor, a turntable, a sampling vertical tube, an acidification dropper, an electric piston and a bottle stopper tube, and automatic sampling and storage of a water sample in a carbon flux simulation box are completed through mutual cooperation of the devices. Volume quantification can be achieved in the water sample collection and acidification titration process, the manual workload is reduced, and manual operation interference can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon flux simulation, in particular to an automatic sampling and storage device suitable for a carbon flux simulation box. Background Art

[0002] Carbon flux simulation experiments are very important for various industries today. According to technical specifications, water samples of these indicators should be collected in brown glass bottles and the sampling bottles should be filled without leaving any headspace. After adding sulfuric acid to acidify to pH ≤ 2, they can be stored at 4°C for 7 days.

[0003] In actual operation, samples are usually taken at regular intervals and then stored for a short period of time, and batch samples are measured in a timely manner before further analysis of the experimental data. However, when collecting water samples for similar prototype observations or indoor simulation experiments, manual sampling, acidification, and storage are still required in the carbon flux simulation box, which consumes a lot of manpower and is inefficient, and is also prone to increase human interference during the experiment. In addition, existing automatic water quality sampling and storage devices are mainly designed for in-situ sampling needs. They are large in size and difficult to store at low temperatures continuously, and cannot meet the convenient control requirements of indoor carbon flux simulation boxes. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic sampling and storage device suitable for a carbon flux simulation box, which can achieve the purpose of automatic sampling and storage during a carbon flux simulation experiment.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] The utility model provides an automatic sampling and storage device suitable for a carbon flux simulation box. The device comprises a base, an experimental water tank, a constant low-temperature box, a tray, a turntable for holding brown sample bottles, a rotating motor, a sampling dropper, an acidification dropper, and a bottle stopper tube.

[0007] An experimental water tank is mounted above the base, containing carbon flux experimental water and having a top cover. The constant low-temperature box contains a fixed rotating motor bracket, an acidification dropper, and an electric piston bracket. A tray with a turntable top support is placed in the center of the bottom of the constant low-temperature box. A turntable containing brown sample bottles is mounted above the turntable top support. A rotating motor is located on one side of the turntable. The rotating motor is used to drive a rotating bearing rod and a rotating gear, thereby rotating the turntable. A sampling dropper is located above the brown sample bottle, and a water inlet is provided on the sampling dropper located within the experimental water tank. Sampling is automatically completed based on controllable time-controlled automatic drain valves and Hall flowmeters on the sampling dropper. After the turntable continues to rotate, an acidification dropper is located above the brown sample bottle. Under the control of the controllable time-controlled automatic drain valve and Hall flowmeter for acidification, after acidification titration is completed, the turntable continues to rotate to the bottom of the stopper tube. The stopper is pushed from top to bottom into the brown sample bottle by the electric piston above the stopper tube, achieving the purpose of automatic sampling and storage.

[0008] In an optional embodiment, the rotary motor, the controllable automatic drain valve, the Hall flow meter, the controllable automatic drain valve for acidification, the Hall flow meter for acidification and the electric piston are all interconnected using an automatic sampling signal transmission system.

[0009] In an optional embodiment, the base is made of wood, which can safely support the experimental water tank above. The base is hollow and has a cover on the side, so it can be placed in a constant low-temperature box.

[0010] In an optional embodiment, the tops of the base, the experimental water tank, and the constant low-temperature box are all opened and located in the same vertical direction, allowing the sampling vertical tube to pass through from top to bottom.

[0011] In an optional embodiment, the tray is made of a polytetrafluoroethylene disc, with four evenly distributed feet on the bottom of the tray, a protruding turntable top support at the center of the tray, and annular gear teeth on the turntable top support for fixing the turntable and generating meshing force when the turntable rotates.

[0012] The beneficial effects of the device provided by the embodiment of the utility model include:

[0013] Compared to conventional methods that rely on manual sampling, acidification, and storage in a carbon flux simulation chamber, the present invention unifies and automates these steps, facilitating daily management and operation. Sampling can be increased from several days to hourly, and samples must be removed and moved elsewhere for testing. This can be optimized to allow for batch testing every 5-6 days. The rotary motor, turntable, time-controlled automatic drain valve, Hall flowmeter, and electric piston can all be miniaturized and placed in a constant low-temperature chamber, which is then fixed to the base of the carbon flux simulation chamber. This allows for sustainable sampling and storage, low cost, and a compact device with flexible application scenarios and easy installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to 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.

[0015] Figure 1 A schematic diagram of the combined structure of an automatic sampling and storage device suitable for a carbon flux simulation box provided in an embodiment of the present utility model;

[0016] Figure 2 A schematic diagram of the structure of a constant low-temperature box and related components provided in an embodiment of the present utility model;

[0017] Figure 3 A schematic structural diagram of a turntable and related components provided in an embodiment of the present utility model;

[0018] Figure 4 A schematic diagram of the structure of a sampling drop tube and related components provided in an embodiment of the present utility model;

[0019] Figure 5 A schematic diagram of the structure of the acidification dropper and related devices provided in an embodiment of the utility model;

[0020] Figure 6 A schematic structural diagram of a bottle stopper tube and related components provided in an embodiment of the present utility model;

[0021] Figure 7 This is a signal transmission schematic diagram of the automatic sampling signal transmission system of the present invention.

[0022] Icons: 1-base; 21-experimental water tank; 22-carbon flux experimental water body; 23-top cover; 31-constant low temperature box; 32-rotating motor bracket; 33-acidification dropper and electric piston bracket; 41-tray; 42-turntable top support; 51-turntable; 52-brown sample bottle; 53-rotating motor; 54-rotating bearing rod; 55-rotating gear; 61-sampling dropper; 62-sealing rubber ring between water tank and base; 63-sealing rubber ring of constant low temperature box; 64-controllable time automatic drain valve; 65-Hall flowmeter; 71-sulfuric acid solution bottle; 72-acidification dropper; 73-controllable time automatic drain valve for acidification; 74-Hall flowmeter for acidification; 81-electric piston; 82-stopper tube; 83-stopper. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in 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 some embodiments of the present invention, not all 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.

[0024] 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 claimed invention, 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 are also within the scope of protection of the present invention.

[0025] 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 need to be further defined or explained in subsequent drawings.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0028] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] Please refer to Figures 1 to 7 The present embodiment provides an automatic sampling and storage device (hereinafter referred to as the device) suitable for a carbon flux simulation box. The device includes a base 1, an experimental water tank 21, a constant low-temperature box 31, a tray 41, a turntable 51, a rotating motor 53, a sampling dropper 61, an acidification dropper 72, and a bottle stopper tube 82.

[0030] The experimental water tank 21 is installed above the base 1. The experimental water tank 21 is filled with carbon flux experimental water 22 and has a top cover 23 on the top. The constant low temperature box 31 has a fixed rotating motor bracket 32 ​​and an acidification dropper and an electric piston bracket 33. A tray 41 with a turntable top support 42 in the center is placed at the bottom of the constant low temperature box 31. The turntable 51 is installed above the turntable top support 42. The rotating motor 53 is on one side of the turntable 51. The rotating motor 53 is used to drive the rotating bearing rod 54 and the rotating gear 55, and then the turntable 51 rotates. There is a sampling drop tube 61 above the brown sample bottle 52. The sampling drop tube A water inlet is provided on 61 at a position inside the experimental water tank 21. Sampling is automatically completed based on the controllable automatic drain valve 64 and the Hall flowmeter 65 on the sampling vertical pipe 61. After the turntable 51 continues to rotate, there is an acidification dropper 72 above the brown sample bottle 52. Under the control of the controllable automatic drain valve 73 and the Hall flowmeter 74 for acidification, after the acidification titration is completed, the turntable 51 continues to rotate to the bottom of the stopper tube 82, and the stopper 83 is pushed from top to bottom into the brown sample bottle 52 through the electric piston 81 above the stopper tube 82, thereby achieving the purpose of automatic sampling and storage.

[0031] Among them, the rotary motor 53, the controllable automatic drain valve 64, the Hall flowmeter 65, the controllable automatic drain valve 73 for acidification, the Hall flowmeter 74 for acidification and the electric piston 81 are all interconnected by an automatic sampling signal transmission system.

[0032] The timing rotation motor 53 is connected to the rotation gear 55 through a rotation bearing rod 54, which is easy to disassemble and replace.

[0033] The turntable 51, the brown sample bottle 52, the rotating gear 55 and the bottle stopper 83 all have corresponding sizes and volumes, and can be easily replaced according to actual needs.

[0034] The constant low temperature box 31, the rotating motor 53, the controllable automatic drain valve 64, the Hall flow meter 65, the controllable automatic drain valve 73 for acidification, the Hall flow meter 74 for acidification and the electric piston 81 can all be manually adjusted and set, which is easy for daily operation.

[0035] The experimental water tank 21 is made of organic glass and is used for carbon flux simulation experiments. It contains water and is equipped with various probe instruments required for the experiment. An open cover is provided on the top.

[0036] The constant low-temperature box 31 is a small industrial refrigerator that uses a 220V power supply, has a temperature control range of -20 to 20°C, a temperature control accuracy of ±0.5°C, and a digital display thermostat. The internal constant temperature is set by a button; a rotating motor bracket 32, an acidification dropper and an electric piston bracket 33 are fixed inside the constant low-temperature box 31.

[0037] The material of the tray 41 is a polytetrafluoroethylene disc. There are four evenly distributed feet on the lower part of the tray 41. There is a protruding turntable top support 42 at the center of the tray 41. The turntable top support 42 has an annular gear for fixing the turntable 51 and generating meshing force when the turntable 51 rotates, so that the turntable 51 can rotate smoothly.

[0038] The device is also provided with a timing controller, which is a switch connected to the indoor 220V power supply with adjustable timing, and supplies power to the rotating motor 53 according to the experimental requirements; in addition, it can receive the electric piston signal and re-time to complete the automatic cycle operation.

[0039] The rotating motor 53 is a large torque motor device, which is fixed to the rotating motor bracket 32 ​​in the constant low temperature box 31 , and is equipped with a rotating bearing rod 54 and an external rotating gear 55 .

[0040] Among them, the rotating bearing rod 54 and the rotating gear 55 are both made of polyetheretherketone silicone material. While meeting the strength requirements, they are lightweight, wear-resistant and corrosion-resistant. The rotating gear 55 is detachable and the number of teeth of the rotating gear 55 matches the number of teeth of the turntable 51.

[0041] Preferably, the turntable 51 is a plastic disc with peripheral gear teeth. The upper interior of the turntable 51 is provided with non-penetrating holes evenly distributed in a circular ring, on which the brown sample bottles 52 without stoppers are placed. The lower center of the turntable 51 is designed as a concave ring with gear teeth arranged inside, which mesh with the gear teeth of the wheel top support 42.

[0042] The brown sample bottle 52 is a standard opaque ground-mouth glass bottle, into which the water sample flows after being aligned with the sampling drop tube 61 .

[0043] Preferably, the sampling drop tube 61 is made of a straight glass tube with a diameter smaller than the diameter of the holes in the base 1, experimental water tank 21, and constant low-temperature box 31. The sampling drop tube 61 passes from top to bottom. The sampling drop tube 61 is submerged in the carbon flux experimental water body 22 and is provided with water inlets at different heights, suitable for collecting water samples at different liquid levels. The water inlet is covered with a filter to filter out broken aquatic vegetation and large particles such as mud and sand. Soft water tank and base sealing rubber rings 62 and constant low-temperature box sealing rubber rings 63 are installed at the openings passing through the experimental water tank 21, constant low-temperature box 31, and base 1 to prevent liquid leakage and high-temperature gas infiltration. The sampling drop tube 61 is then interconnected with a controllable automatic drain valve 64 and a Hall flowmeter 65.

[0044] The controllable automatic drain valve 64 is a straight-through electronic time-controlled water valve switch, with a power supply of 220V. It is connected to the sampling drop pipe 61 at the top and bottom to control the downward flow of the water sample.

[0045] Among them, the material of the Hall flow meter 65 is PA66+30% glass fiber, and it is also powered by a 220V power supply. It is used to calculate the volume of sampled water and then send a valve closing signal.

[0046] Preferably, the acidification dropper 72 is made of a pointed glass dropper, and the acidification dropper 72 is fixed to the acidification dropper and electric piston bracket 33 in the constant low-temperature box 31; the upper part of the acidification dropper 72 is funnel-shaped, which is convenient for the sulfuric acid solution bottle 71 to be placed upside down, and the acidification dropper 72 is interconnected with the controllable automatic drain valve 73 for acidification and the Hall flowmeter 74 for acidification.

[0047] Specifically, the time-controlled automatic drain valve 73 for acidification is also a straight-through electronic time-controlled water valve switch, which is connected to the acidification dripping pipe 72 at the upper and lower ends to control the downward dripping of sulfuric acid liquid.

[0048] The Hall flow meter 74 for acidification is used to calculate the volume of the acid solution poured in and then send a valve closing signal.

[0049] Preferably, the electric piston 81 is an electric motor that drives the push rod, the power supply is 220V, and it is fixed on the acidification dropper and the electric piston bracket 33 in the constant low temperature box 31. The adjustable range of the push rod of the electric piston 81 is 2 to 8 cm; the material of the bottle stopper tube 82 is plastic, and the shape is a round tube with an outer circle and an inner hexagon. The length is determined by the number of bottle stoppers required to be used in the automatic sampling cycle.

[0050] The bottle stopper 83 is made of brown glass, with an upper portion made of outer hexagonal glass and a lower portion made of ground-mouthed glass.

[0051] The signal systems including sampling timing and turntable rotation, water sampling, acidification and flow meter switch, piston pushing, etc. complete the cycle to achieve the purpose of automatic sampling and storage.

[0052] Working principle: The base 1, experimental water tank 21, constant low-temperature box 31, tray 41, timer, rotary motor 53, turntable 51, sampling dropper 61, acidification dropper 72 and bottle stopper 83 are arranged, and the interaction between them is utilized. By controlling the timing of the rotary motor 53, the drive turntable 51 rotates, so that the brown sample bottle 52 without the bottle stopper 83 is aligned with the sampling dropper 61. After the automatic drain valve 64 is opened by a controllable signal, the water in the experimental water tank 21 flows downward into the brown sample bottle 52. When a certain amount of water sample flows in, the valve is automatically closed; the rotation continues, so that the brown sample bottle 52 with the water sample is aligned with the acidification dropper 72. Similarly, sulfuric acid is automatically dripped in to acidify to pH ≤ 2. The turntable 51 rotates to align with the bottom of the bottle stopper tube 82. The bottle stopper 83 in the bottle stopper tube 82 is pushed by the upper electric piston 81 to tightly cover the brown sample bottle 52, achieving the purpose of automatic sampling without leaving headspace. All the above-mentioned operations such as rotation, flow, dripping acidification and pushing the cork are carried out in a constant low-temperature box 31, which can ensure that the samples meet the purpose of storage at 4°C; when the batch of samples is accumulated on the turntable 51, they are taken out and sent to the laboratory to measure carbon flux-related indicators.

[0053] This device needs to be assembled before the experiment. The experimental water tank 21 is placed on the top of the base 1, and the constant low-temperature box 31 is placed inside the base 1. The tops of the three devices are all opened and located in the same vertical direction; a sampling drop tube 61 with a water tank and base sealing rubber ring 62 and a constant low-temperature box sealing rubber ring 63 is installed in the hole. A controllable automatic drain valve 64 and a Hall flow meter 65 are installed on the sampling drop tube 61 at a position inside the constant low-temperature box 31 to check the overall water tightness and low-temperature air tightness of the sampling drop tube 61; check whether there is any leakage. After the error, the tray 41 and turntable support 42 are placed at the bottom of the constant low-temperature box 31. The turntable 51 and brown sample bottle 52 are installed above the turntable support 42. The rotating motor 53, rotating bearing rod 54, and rotating gear 55 are simultaneously installed, so that the rotating motor 53, rotating bearing rod 54, rotating gear 55, and turntable 51 are connected in sequence. In addition, the sulfuric acid solution bottle 71, acidification dropper 72, controllable automatic drain valve 73 for acidification, Hall flowmeter 74 for acidification, electric piston 81, bottle stopper tube 82, and bottle stopper 83 are installed. After the rotation range of the rotating gear 55 is adjusted to ensure vertical alignment with the sampling dropper 61, acidification dropper 72, and bottle stopper tube 82, automatic sampling and storage are completed during the experiment. When a batch of samples covering approximately five days has been accumulated, the constant low-temperature box 31 can be opened and the brown sample bottle 52, filled with sample without leaving any headspace, can be removed for subsequent water carbon flux measurement and analysis.

[0054] Among them, the working process of the automatic sampling signal transmission system is as follows: after setting the timing, the rotating motor 53 drives the rotating gear 55 to rotate, and the rotation angle is (360 / the number of sample bottles to be collected)×(1 / 3); the signal is transmitted to the controllable automatic drain valve 64, and the carbon flux experimental water body 22 flows into the brown sample bottle 52 from the sampling vertical pipe 61. When the Hall flow meter 65 records that the inflowing liquid has reached the volume of the brown sample bottle 52, the feedback signal is sent to the controllable automatic drain valve 64 to stop the flow; synchronously, the feedback signal is sent to the rotating motor 53, and the rotation angle continues to be (360 / the number of sample bottles to be collected)×(1 / 3). After vertical alignment with the acidification dropper 72, the signal is transmitted to the acidification dropper 72. Using the controllable automatic drain valve 73, the sulfuric acid solution in the sulfuric acid solution bottle 71 is dripped into the brown sample bottle 52 through the acidification dropper 72. When the acidification Hall flowmeter 74 records that the dripping of sulfuric acid has reached the requirement, a feedback signal is sent to the controllable automatic drain valve 73 for acidification to stop the flow; next, the feedback signal is sent to the rotating motor 53, which continues to rotate by an angle of (360 / the number of sample bottles to be collected) × (1 / 3). After rotating until it is aligned with the stopper tube 82, a signal is transmitted to the electric piston 81 to push the stopper 83 in the stopper tube 82 into the brown sample bottle 52; finally, after the electric piston 81 feeds back a signal to the automatic timing module of the rotating motor 53, the cycle is completed and the timing is restarted.

[0055] Among them, automatic sampling and storage are completed every 4 hours, 6 samples are to be taken every day, and the sample is taken out every 5 days for measurement and analysis as a cycle, so the single angle of rotation of the rotating motor 53 to drive the rotating gear 55 is (360 / 30)×(1 / 3)=4°; there should be 30 grooves in the turntable 51 that can accommodate brown sample bottles 52. After putting 30 brown sample bottles 52, the experiment is started. The volume of a single brown sample bottle 52 is 5ml, which is determined by the amount of water required for the combustion method to determine the total organic carbon index in water; when the timing is reached, the rotating motor 53 drives the rotating gear 55 to rotate 4°, and transmits a signal to the controllable automatic drain valve 64. The carbon flux experimental water body 22 flows into the brown sample bottle 52 from the sampling vertical pipe 61, with a volume of 4.9ml. When the Hall flowmeter 65 records that the inflowing liquid has reached the volume of the brown sample bottle 52, the feedback signal is sent to the controllable automatic drain valve 64. The dynamic drain valve 64 stops flowing; synchronously, the feedback signal is sent to the rotating motor 53, which continues to rotate at an angle of 4°. After it is vertically aligned with the acidification dropper 72, the signal is transmitted to the controllable automatic drain valve 73 for acidification, and the sulfuric acid solution is dripped into the brown sample bottle 52 from the acidification dropper 72, with a dripping volume of 0.1 ml. This volume is also the pH ≤ 2 as known from the preliminary test. When the Hall flowmeter 74 for acidification records that the dripping of sulfuric acid has met the requirement, the feedback signal is sent to the controllable automatic drain valve 73 for acidification to stop flowing; next, the feedback signal is sent to the rotating motor 53, which continues to rotate at an angle of 4°. After it is rotated to align with the bottle stopper tube 82, the signal is transmitted to the electric piston 81, and the bottle stopper 83 in the bottle stopper tube 82 is pushed into the brown sample bottle 52; finally, after the electric piston 81 feeds back the signal to the automatic timing module of the rotating motor 53, the cycle is completed and the cycle timing is re-circulated for 4 hours, thereby achieving the purpose of automatic sampling and storage. After 5 days of circulation, the constant low-temperature box 31 is opened manually to take out 30 brown sample bottles 52 of water carbon flux, and then the next step of measurement and analysis is carried out.

[0056] The beneficial effects of the device provided in this embodiment include:

[0057] Compared to conventional methods that rely on manual sampling, acidification, and storage in a carbon flux simulation box, the present invention unifies and automates the sampling, acidification, and storage processes, facilitating daily management and operation. Sampling can be increased from several days to hourly sampling, and samples must be removed and moved elsewhere for measurement. This can be optimized to allow for batch measurements after 5-6 days of centralized sampling. The rotary motor 53, turntable 51, controllable automatic drain valve 64, Hall flowmeter 65, and electric piston 81 can all be miniaturized and placed in a constant low-temperature box 31, which is then fixed to the base 1 of the carbon flux simulation box. This allows for sustainable sampling and storage, low cost, a small device size, flexible application scenarios, and easy installation.

[0058] The utility model also configures the device with an automatic sampling signal transmission system, including sampling timing signal, turntable rotation signal, water sampling signal, acidification signal, flow meter switch signal and piston push signal. The various signals are connected by serial lines, and the operations performed are all set programs. The water sample collection and acidification titration processes can achieve volume quantification, reducing human operation interference.

[0059] The device has a simple, practical and convenient structure. It can not only control operations such as rotation, acidification titration and bottle capping, but also has detachable gears, turntables, etc., as well as adjustable automatic drain valves and flow meters. To avoid being unable to meet the sampling needs of different carbon flux simulation experiments, by replacing the turntable, brown sample bottles and stoppers of different volumes can be placed in. After adjustment, it can be used to collect water samples with different volume requirements.

[0060] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An automatic sampling and storage device suitable for a carbon flux simulation box, characterized in that: The device comprises a base (1), an experimental water tank (21), a constant low-temperature box (31), a tray (41), a turntable (51), a rotating motor (53), a sampling dropper (61), an acidification dropper (71), and a bottle stopper (82); The experimental water tank (21) is installed above the base (1), and the experimental water tank (21) is filled with carbon flux experimental water (22) and has a top cover (23) on the top; the constant low temperature box (31) has a fixed rotating motor bracket (32) and an acidification dropper and an electric piston bracket (33), and the tray (41) with a turntable top support (42) in the center is placed at the bottom of the constant low temperature box (31); the turntable (51) containing the brown sample bottle (52) is installed above the turntable top support (42), and the rotating motor (53) is on one side of the turntable (51). The rotating motor (53) is used to drive the rotating bearing rod (54) and the rotating gear (55), and then the turntable (51) rotates, and there is a rotating gear (55) above the brown sample bottle (52). The sampling drop tube (61) is provided with a water inlet at a position inside the experimental water tank (21). Sampling is automatically completed based on the control of the controllable automatic drain valve (62) and the Hall flow meter (65) on the sampling drop tube (61). After the turntable (51) continues to rotate, the acidification dropper (71) is located above the brown sample bottle (52). Under the control of the controllable automatic drain valve (73) and the Hall flow meter (74) for acidification, after the acidification titration is completed, the turntable (51) continues to rotate to the bottom of the bottle stopper tube (82). The bottle stopper (83) is pushed from top to bottom into the brown sample bottle (52) through the electric piston (81) above the bottle stopper tube (82), thereby achieving the purpose of automatic sampling and storage.

2. The automatic sampling and storage device suitable for a carbon flux simulation box according to claim 1, characterized in that: The rotary motor (53), the controllable automatic drain valve (62), the Hall flow meter (65), the controllable automatic drain valve for acidification (73), the Hall flow meter for acidification (74) and the electric piston (81) are all interconnected by an automatic sampling signal transmission system.

3. The automatic sampling and storage device suitable for a carbon flux simulation box according to claim 2, characterized in that: The base (1) is made of a wooden board and can safely support the experimental water tank (21) above. The base (1) is hollow and has an openable side cover, and can be placed in the constant low-temperature box (31).

4. The automatic sampling and storage device suitable for a carbon flux simulation box according to claim 3, characterized in that: The tops of the base (1), the experimental water tank (21) and the constant low-temperature box (31) are all opened and located in the same vertical direction, allowing the sampling vertical tube (61) to pass through from top to bottom.

5. The automatic sampling and storage device suitable for a carbon flux simulation box according to claim 1, characterized in that: The material of the tray (41) is a polytetrafluoroethylene disc. The lower part of the tray (41) has four evenly distributed pads. The center of the tray (41) has a protruding turntable top support (42). The turntable top support (42) has an annular gear for fixing the turntable (51) and generating a meshing force when the turntable (51) rotates.

6. The automatic sampling and storage device suitable for a carbon flux simulation box according to claim 1, characterized in that: The water inlet is covered with a filter screen.

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