A sampling device and method for monitoring and collecting carbon dioxide in an ecosystem

Abstract

The present invention relates to the technical field of ecosystem gas sampling, and specifically proposes a sampling device and method for monitoring and collecting carbon dioxide in an ecosystem, including: a sampling box, a sampling mechanism, and a telescopic supporting mechanism. The sampling device for monitoring and collecting carbon dioxide in an ecosystem designed by the present invention cooperates with an expansion plate through a telescopic supporting mechanism installed at the lower end of the sampling box, so that the sampling device can be applied not only to the ground but also to ecological environments with a certain water depth such as rice fields, thereby expanding the scope of application of the sampling device, and at the same time, the bottom of the sampling device can be effectively sealed in different ecosystem environments, thereby improving the accuracy of carbon dioxide collection and sampling; and before and after adjustment, the telescopic supporting mechanism forms a triangular stable support structure around the sampling box through a displacement plate, a supporting rod, and a guide rod, which greatly improves the stability of the sampling box before and after adjustment.

Description

Technical Field

[0001] The invention relates to the technical field of ecosystem gas sampling, and specifically proposes a sampling device and method for monitoring and collecting ecosystem carbon dioxide. Background Art

[0002] Ecosystems include agricultural ecology, grassland ecology, urban ecology, desert ecology, etc. Monitoring the carbon dioxide content in different ecological forms is of great significance to environmental science, ecological research, and responding to climate change. Therefore, it is necessary to regularly collect and sample carbon dioxide in different ecosystems for monitoring and analysis.

[0003] Generally, the operation is carried out through the static box collection method. The static box can be placed on the ground of different ecosystems to seal the ground area for a certain period of time to capture the carbon dioxide gas released from the soil in different ecosystems. When the carbon dioxide gas emissions need to be measured, the gas is collected through the sampling port on the box and drawn into the sampling bag; the sample box is generally made of transparent material to allow light to pass through without interfering with the internal ecological process.

[0004] However, it is difficult for existing sampling devices to adjust their heights accordingly according to different ecosystem environments. For example, when using a sampling device in an ecological environment with a certain water depth, such as an agricultural rice field, it is often necessary to add a support under the sampling device to prevent the sampling device from being immersed in water due to insufficient height of the sampling device. This method not only reduces the stability of the sampling device during use, but also affects the convenience and scope of application of the sampling device. Summary of the invention

[0005] In view of the above problems, the embodiments of the present application provide a sampling device and method for monitoring and collecting carbon dioxide in an ecosystem to solve the technical problems in the related art.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solution: a sampling device for monitoring and collecting carbon dioxide in an ecosystem, comprising: a sampling box and a sampling mechanism installed on the top thereof; the sampling box comprises a rectangular frame, and the rectangular frame has transparent plates installed in the other five rectangular frames except the rectangular frame at the bottom, and a telescopic supporting mechanism is installed on the rectangular frame at the bottom of the rectangular frame.

[0007] The outer side wall of the bottom of the rectangular frame is provided with an expansion plate in the shape of a rectangular frame which slides up and down through a connecting set, and a sealing gasket is installed at the bottom of the expansion plate.

[0008] The telescopic supporting mechanism includes guide rods that slide up and down and are connected in the middle of four horizontal sections at the bottom of the rectangular frame. The guide rods are located in the sampling box. A fixing frame is installed on the top of the four guide rods. The fixing frame is cross-shaped, and an insertion group is installed on the fixing frame. The outer wall of the expansion plate is provided with a receiving groove that corresponds to the guide rods one by one and passes through and extends through the sealing gasket up and down. The receiving groove extends to the horizontal section of the bottom of the rectangular frame. After the lower end of the guide rod slides into the receiving groove, a limit block with an inverted T-shaped structure is installed. A displacement plate is horizontally slidably connected to the limit block, and an inverted T-shaped groove is provided on the displacement plate that is slidably connected to the limit block. Supplementary strips are installed in the middle of the outer sides of the four horizontal sections at the lower end of the rectangular frame. A lifting and lowering driving group that drives the displacement plate to move at one end in the sampling box is installed on the fixing frame, and a supporting rod is hinged between the end of the displacement plate located on the outside of the sampling box and the supplementary strip.

[0009] The four supplementary strips are all equipped with a sealing pressing driving group that presses the connection group downward when the angle between the supporting push rod and the displacement plate gradually decreases.

[0010] In a possible implementation, two expansion panels symmetrically arranged along the width direction of the displacement plate are installed at one end of the displacement plate away from the sampling box.

[0011] In a possible implementation, the insertion group includes a plurality of inclined insertion rods installed at the center of the fixing frame, the insertion rods are arranged alternately with the horizontal section of the fixing frame, and the lower ends of the insertion rods are conical and located below the rectangular frame.

[0012] In one possible implementation, the connection group includes a fixed frame with a rectangular structure fixedly installed on the expansion board, the fixed frame and the rectangular frame are connected by a sliding connection piece, the tops of the four horizontal sections of the fixed frame are each equipped with wedge bars that are symmetrically arranged along the horizontal sections and located on both sides of the corresponding displacement plates, the outer walls of the four horizontal sections at the lower end of the rectangular frame are each equipped with an inverted L-shaped support plate corresponding to the wedge bars one by one, the horizontal sections of the support plates are slidably connected with a pressure bar, and the opposite surfaces of the pressure bar and the wedge bar are matching inclined surfaces.

[0013] In a possible implementation, the sliding connection includes fixed seats installed on four top corners of the rectangular frame near the lower end, and a sliding block that slides up and down is connected to the fixed seat, and a connecting rod is hinged between the sliding block and the top of the fixed frame.

[0014] In a possible implementation, the inclined surface of the pressure strip is rollingly mounted with balls, and the pressure strip is in rolling contact with the inclined surface of the wedge strip via the balls.

[0015] In a possible implementation, the sealing pressure driving group includes a rotating shaft rotatably connected to the supplementary strip and fixedly passing through the supporting and pressing rod, and a fixed sleeve on the rotating shaft is provided with evenly arranged cams, and the cams correspond to the pressure strip.

[0016] In a possible implementation, the lifting drive group includes an electric telescopic rod installed in the middle of the fixed frame, a lifting plate is installed at the telescopic end of the electric telescopic rod, and a push-pull rod is hinged between the lifting plate and the displacement plate.

[0017] In one possible implementation, a sliding sleeve that slides up and down is provided on the guide rod, and symmetrically arranged ribs are installed between the tops of the four horizontal sections of the rectangular frame on the lower side and the sliding sleeve, and the two ribs connected to the same sliding sleeve are arranged in an eight-shaped shape.

[0018] The present invention also provides a sampling method for monitoring and collecting carbon dioxide in an ecosystem, comprising the following steps: S1, sampling area determination: determining a sampling location for carbon dioxide monitoring and collection, and determining whether the bottom of the sampling box needs to be lengthened and adjusted according to sampling environment requirements.

[0019] S2, support fixation and closure: the sampling box and the telescopic supporting mechanism are supported by inserting the fixing group into the ground, and the telescopic supporting mechanism is activated according to the use requirements. When monitoring the soil or grassland, the telescopic supporting mechanism cooperates with the sealing pressure driving group and the connecting group to press the expansion plate, thereby pressing the sealing gasket against the grassland or soil; when monitoring the environmental area with a certain water depth, the lifting driving group drives the displacement plate to move to the middle of the sampling box, and the displacement plate, the supporting rod and the rectangular frame cooperate to push the sampling box upward until the distance between the expansion plate and the displacement plate is slightly less than the water depth.

[0020] S3, gas collection: The sampling box captures the carbon dioxide gas released in its enclosed area. After a certain period of time, the sampling mechanism extracts the carbon dioxide in the sampling box into the existing sampling bag.

[0021] The above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects: 1. A sampling device for monitoring and collecting carbon dioxide in an ecosystem designed by the present invention, through the cooperation of the telescopic supporting mechanism installed at the lower end of the sampling box and the expansion plate, makes the sampling device not only applicable to the ground but also applicable to ecological environments with a certain water depth such as rice fields, thereby expanding the application scope of the sampling device, and at the same time, it can also make the bottom of the sampling device in different ecosystem environments to be effectively sealed, thereby improving the accuracy of carbon dioxide collection and sampling; and before and after adjustment, the telescopic supporting mechanism forms a triangular stable support structure around the sampling box through the displacement plate, supporting rod and guide rod, which greatly improves the stability of the sampling box before and after adjustment.

[0022] 2. The present invention cooperates with the sealing and pressing driving group and the connecting group, which can not only extend and retract the bottom of the sampling box when used in an ecological environment with a certain water depth, but also press down the expansion plate to seal and press the bottom of the sampling box when used in a ground ecological environment, achieving the effect of one machine with two uses.

[0023] 3. The displacement plates connected to the four sides of the sampling box of the present invention are uniformly driven by a lifting drive group, which not only enables the four sides of the sampling box to be uniformly adjusted and supported, but also improves the convenience of height adjustment of the sampling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the sampling device of the present invention.

[0026] Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of the sampling device of the present invention.

[0027] Figure 3 The present invention Figure 2 A partial enlarged view of point A in the figure.

[0028] Figure 4 The present invention Figure 2 A local enlarged schematic diagram of point B in the figure.

[0029] Figure 5 It is a main cross-sectional view of the sampling device of the present invention.

[0030] 1. Sampling box; 10. Rectangular frame; 11. Transparent plate; 12. Expansion plate; 13. Connection group; 130. Fixed frame; 131. Wedge bar; 132. Support plate; 133. Pressure bar; 140. Fixed seat; 141. Sliding block; 142. Connecting rod; 2. Sampling mechanism; 3. Telescopic supporting mechanism; 30. Guide rod; 31. Fixed frame; 32. Insertion group; 320. Insertion rod; 33. Accommodating groove; 34. Limiting block; 35. Displacement plate; 350. Expansion panel; 36. Inverted T-shaped groove; 37. Supplementary strip; 38. Lifting drive group; 380. Electric telescopic rod; 381. Lifting plate; 382. Push-pull rod; 39. Sealing pressure driving group; 390. Rotating shaft; 391. Cam; 301. Supporting rod; 302. Sliding sleeve; 303. Rib rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] See also Figure 1 A sampling device for monitoring and collecting carbon dioxide in an ecosystem comprises: a sampling box 1 and a sampling mechanism 2 installed on the top thereof; the sampling box 1 comprises a rectangular frame 10, and the rectangular frame 10 has transparent plates 11 installed in the other five rectangular frames except the rectangular frame at the bottom thereof, and a telescopic supporting mechanism 3 is installed on the rectangular frame at the bottom of the rectangular frame 10.

[0034] The sampling mechanism 2 adopts the existing technology. After the ground area is closed and monitored for a certain period of time, the sampling mechanism 2 extracts the carbon dioxide in the sampling box 1 into the existing sampling bag.

[0035] See also Figure 1 The bottom outer wall of the rectangular frame 10 is provided with an expansion plate 12 that slides up and down and is in the shape of a rectangular frame through a connection group 13. A sealing gasket (not shown in the figure) is installed at the bottom of the expansion plate 12. The expansion plate 12 cooperates with the sealing gasket to enhance the sealing effect between the bottom of the sampling box 1 and the ground of the monitoring sampling area, thereby improving the accuracy of sampling.

[0036] See also Figure 1 , Figure 2 and Figure 5The telescopic supporting mechanism 3 includes guide rods 30 that are connected to the middle of the four horizontal sections at the bottom of the rectangular frame 10 and slide up and down. The guide rods 30 are located in the sampling box 1. A fixing frame 31 is installed on the top of the four guide rods 30. The fixing frame 31 is cross-shaped, and an insertion group 32 is installed on the fixing frame 31. The outer wall of the expansion plate 12 is provided with a receiving groove 33 that corresponds to the guide rods 30 one by one and passes through and extends through the sealing gasket up and down. The receiving groove 33 extends to the horizontal section at the bottom of the rectangular frame 10. The lower end of the guide rod 30 slides After being inserted into the accommodating groove 33, a limit block 34 with an inverted T-shaped structure is installed, and a displacement plate 35 is horizontally slidably connected to the limit block 34. The displacement plate 35 is provided with an inverted T-shaped groove 36 slidably connected to the limit block 34, and a supplementary strip 37 is installed in the middle of the outer side of the four horizontal sections at the lower end of the rectangular frame 10. A lifting drive group 38 for driving the displacement plate 35 to move at one end inside the sampling box 1 is installed on the fixed frame 31, and a supporting rod 301 is hinged between the end of the displacement plate 35 located on the outer side of the sampling box 1 and the supplementary strip 37.

[0037] See also Figure 2 and Figure 5 The four supplementary strips 37 are all equipped with a sealing pressing driving group 39 that presses the connection group 13 downward when the angle between the supporting rod 301 and the displacement plate 35 gradually decreases.

[0038] When the sampling device is in the initial state, the expansion plate 12 and the sealing gasket connected thereto are both located above the lower end surface of the displacement plate 35, thereby preventing the sealing gasket from being worn when the sampling device is placed. When the sampling device is used, the telescopic supporting mechanism 3 is activated according to the requirements of the use environment.

[0039] When monitoring and collecting carbon dioxide in soil or grassland, the telescopic supporting mechanism 3 cooperates with the connecting group 13 to press the expansion plate 12 through the sealing pressing drive group 39, thereby pressing the sealing gasket against the grassland or soil, closing the sampling area to capture the carbon dioxide gas released from the soil in the area.

[0040] When carbon dioxide monitoring and sampling is carried out in an environment with a certain water depth, such as a rice field, the lifting drive group 38 drives the displacement plate 35 to move toward the middle of the sampling box 1, and the displacement plate 35 pulls the supporting rod 301 to move, and the supporting rod 301 pushes the supplementary strip 37 to drive the rectangular frame 10 to move upward, thereby increasing the distance between the bottom of the sampling box 1 and the bottom of the displacement plate 35 until the distance between the expansion plate 12 and the displacement plate 35 is slightly less than the water depth, so that when the sampling device is placed later, the expansion plate 12 is located below the water surface or the water submerges a part of the expansion plate 12, and the sampling box 1 contains air and the monitoring area is closed.

[0041] In summary, by cooperating with the telescopic supporting mechanism 3 and the sampling box 1, carbon dioxide monitoring and collection can be carried out on rice fields with different water depths and carbon dioxide monitoring and collection in different ecosystems, thereby expanding the scope of application of the sampling device for carbon dioxide monitoring and collection, and before and after the extension adjustment of the bottom of the sampling box 1, the sampling box 1 is surrounded by the supplementary strip 37, the supporting rod 301 and the displacement plate 35 to form a triangular stable structure, so that the sampling box 1 always maintains a stable state, avoiding the problem that the sampling device is affected by external wind force during use, causing the sampling box 1 to shake or tip over and affect sampling.

[0042] See also Figure 2 The end of the displacement plate 35 away from the sampling box 1 is equipped with two expansion panels 350 symmetrically arranged along its width direction. The expansion panels 350 are used to increase the contact area between the displacement plate 35 and the ground, thereby improving the stability of the placement of the sampling box 1.

[0043] See also Figure 2 and Figure 5 The insertion group 32 includes a plurality of inclined insertion rods 320 installed at the center of the fixing frame 31. The insertion rods 320 are arranged alternately with the horizontal section of the fixing frame 31. The lower ends of the insertion rods 320 are conical and located below the rectangular frame 10.

[0044] The insertion rod 320 is used to support the fixing frame 31. When in use, the tapered part at the lower end of the insertion rod 320 is inserted into the ground. Multiple insertion rods 320 are connected to the ground to form a triangle. The stability of the triangle is further improved through the principle of triangle stability when the sampling box 1 and the telescopic supporting mechanism 3 are expanded and retracted.

[0045] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 The connection group 13 includes a fixed frame 130 with a rectangular structure fixedly installed on the expansion plate 12. The fixed frame 130 is connected to the rectangular frame 10 through a sliding connection. The tops of the four horizontal sections of the fixed frame 130 are all equipped with wedge bars 131 symmetrically arranged along the horizontal sections and located on both sides of the corresponding displacement plates 35. The outer walls of the four horizontal sections at the lower end of the rectangular frame 10 are all equipped with inverted L-shaped support plates 132 corresponding to the wedge bars 131 one by one. The horizontal sections of the support plates 132 are slidably connected with pressure bars 133, and the opposite surfaces of the pressure bars 133 and the wedge bars 131 are matching inclined surfaces.

[0046] See also Figure 4 The sliding connection includes a fixed seat 140 installed on the four top corners of the rectangular frame 10 near the lower end, and a sliding block 141 that slides up and down is connected to the fixed seat 140. A connecting rod 142 is hinged between the sliding block 141 and the top of the fixed frame 130.

[0047] When monitoring and collecting carbon dioxide on soil or grassland, the sampling box 1 and the telescopic supporting mechanism 3 are supported by inserting the fixing group 32 into the ground, and then the lifting drive group 38 drives the sampling box 1 to move downward, and the displacement plate 35 moves away from the middle of the sampling box 1, and the displacement plate 35 pulls the supporting rod 301, and the supporting rod 301 pushes the pressing bar 133 to move away from the transparent plate 11 through the sealing pressing drive group 39, and the pressing bar 133 drives the pressing bar 131 to move downward through the extrusion fit between its inclined surface and the inclined surface of the wedge bar 131, and the wedge bar 131 presses down the fixed frame 130 to push the expansion plate 12 to move downward, and the expansion plate 12 drives the sealing gasket to move downward and press against the soil or lawn, thereby achieving the closure of the monitoring and sampling area.

[0048] When the wedging strip 131 drives the fixing frame 130 to move downward, the fixing frame 130 drives the sliding block 141 to move downward through the connecting rod 142, so that the expansion plate 12 drives the sealing gasket to move downward and press against the soil or lawn.

[0049] See also Figure 4 The inclined surface of the pressure strip 133 is rolled with a ball (not shown in the figure), and the pressure strip 133 is in rolling contact with the inclined surface of the wedge strip 131 through the ball, thereby reducing the friction between the pressure strip 133 and the wedge strip 131 and improving the smoothness of the pressure strip 133 squeezing the wedge strip 131 to move downward.

[0050] See also Figure 2 and Figure 4 The sealing pressure driving group 39 includes a rotating shaft 390 which is rotatably connected to the supplementary strip 37 and fixedly passes through the supporting rod 301. The rotating shaft 390 is fixedly sleeved with evenly arranged cams 391, and the cams 391 correspond to the pressure strip 133.

[0051] The displacement plate 35 moves in the direction away from the middle of the sampling box 1, and the displacement plate 35 pulls the supporting rod 301, and the supporting rod 301 drives the rotating shaft 390 to rotate along the axis of the rotating shaft 390. During the rotation process, the rotating shaft 390 drives the raised part of the cam 391 to rotate and pushes the pressing bar 133 to move in the direction away from the transparent plate 11, so that the pressing bar 133 can drive the pressing bar 131 to drive the expansion plate 12 to move downward to achieve the closure of the monitoring sampling area through the extrusion fit between its inclined surface and the inclined surface of the pressing wedge bar 131.

[0052] By cooperating with the sealing pressure driving group 39 and the connecting group 13, the telescopic supporting mechanism 3 can not only drive the sampling box 1 to perform telescopic movement at the bottom, but also realize the sealing pressure driving of the bottom of the sampling box 1, achieving a dual-purpose effect.

[0053] See also Figure 2and Figure 5 The lifting drive group 38 includes an electric telescopic rod 380 installed in the middle of the fixed frame 31, and a lifting plate 381 is installed at the telescopic end of the electric telescopic rod 380. A push-pull rod 382 is hinged between the lifting plate 381 and the displacement plate 35.

[0054] When it is necessary to monitor and collect carbon dioxide in an ecosystem with a certain water depth (such as a rice field), the electric telescopic rod 380 is started, and the electric telescopic rod 380 pulls the lifting plate 381 to move upward. The lifting plate 381 pulls the displacement plate 35 to move toward the axis of the lifting plate 381 through the push-pull rod 382, ​​so that the displacement plate 35 pushes the supplementary strip 37 through the supporting rod 301 to drive the rectangular frame 10 to move upward, so that the entire sampling box 1 and the sampling mechanism 2 are moved upward until the distance between the expansion plate 12 and the displacement plate 35 is slightly less than the water depth.

[0055] A triangle is formed between the two push-pull rods 382 symmetrically arranged on the lifting plate 381 and the displacement plate 35 , and the stability of the sampling device is further improved by the principle that the triangle has stability.

[0056] See also Figure 3 The guide rod 30 is provided with a sliding sleeve 302 that slides up and down. The tops of the four horizontal sections of the rectangular frame 10 on the lower side are all equipped with symmetrically arranged rib rods 303 between the sliding sleeve 302. The two rib rods 303 connected to the same sliding sleeve 302 are arranged in an eight-shaped shape. A triangle is formed between the horizontal section of the rectangular frame 10, the rib rod 303 and the guide rod 30. When the sampling box 1 moves up and down, the sliding sleeve 302 is driven to move along the guide rod 30, thereby improving the connection stability between the guide rod 30 and the sampling box 1.

[0057] See also Figure 1-Figure 5 The present invention also provides a sampling method for monitoring and collecting carbon dioxide in an ecosystem, comprising the following steps: S1, sampling area determination: determining a sampling location for carbon dioxide monitoring and collection, and determining whether it is necessary to extend and adjust the bottom of the sampling box 1 according to sampling environment requirements.

[0058] S2, support, fixation and closure: the sampling box 1 and the telescopic supporting mechanism 3 are supported by inserting the fixing group 32 into the ground, and the telescopic supporting mechanism 3 is activated according to the use requirements. When monitoring the soil or grassland, the telescopic supporting mechanism 3 cooperates with the connection group 13 through the sealing pressing drive group 39 to press the expansion plate 12, so that the sealing gasket is pressed against the grassland or soil; when monitoring the environmental area with a certain water depth, the lifting drive group 38 drives the displacement plate 35 to move toward the middle of the sampling box 1, and the displacement plate 35, the supporting rod 301 and the rectangular frame 10 cooperate to push the sampling box 1 upward until the distance between the expansion plate 12 and the displacement plate 35 is less than the water depth. After that, when the sampling device is placed, the expansion plate 12 is below the water surface or a part of the expansion plate 12 is submerged by water, and the sampling box 1 contains air and the monitoring area is closed.

[0059] S3, gas collection: the sampling box 1 captures the carbon dioxide gas released in its closed area. After a certain period of time, the sampling mechanism 2 extracts the carbon dioxide in the sampling box 1 into the existing sampling bag.

[0060] In the description of the present invention, it is necessary to understand that the terms "length", "width", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0061] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sampling device for monitoring and collecting carbon dioxide in an ecosystem, characterized in that: include: A sampling box (1) and a sampling mechanism (2) installed on the top thereof; the sampling box (1) comprises a rectangular frame (10), and transparent plates (11) are installed in the other five rectangular frames of the rectangular frame (10) except for the rectangular frame at the bottom thereof, and a telescopic supporting mechanism (3) is installed on the rectangular frame at the bottom of the rectangular frame (10); The bottom outer wall of the rectangular frame (10) is sleeved with an expansion plate (12) that slides up and down and is in the shape of a rectangular frame through a connection group (13), and a sealing gasket is installed at the bottom of the expansion plate (12); The telescopic support mechanism (3) comprises guide rods (30) which are connected to the middle of four horizontal sections at the bottom of the rectangular frame (10) and slide up and down. The guide rods (30) are located in the sampling box (1). A fixing frame (31) is installed on the top of the four guide rods (30). The fixing frame (31) is in a cross shape. An insertion group (32) is installed on the fixing frame (31). The outer wall of the expansion plate (12) is provided with a receiving groove (33) which corresponds to the guide rods (30) one by one and passes through and extends through the sealing gasket from top to bottom. The receiving groove (33) extends to the horizontal section at the bottom of the rectangular frame (10). The lower end of the guide rod (30) slides through the sealing gasket. After entering the receiving groove (33), a limit block (34) with an inverted T-shaped structure is installed, a displacement plate (35) is horizontally slidably connected to the limit block (34), and an inverted T-shaped groove (36) is provided on the displacement plate (35) and is slidably connected to the limit block (34). A supplementary strip (37) is installed at the middle of the outer side of the four horizontal sections at the lower end of the rectangular frame (10), and a lifting drive group (38) is installed on the fixed frame (31) to drive the displacement plate (35) to move at one end located in the sampling box (1), and a supporting rod (301) is hinged between the end of the displacement plate (35) located at the outer side of the sampling box (1) and the supplementary strip (37); The lifting drive group (38) comprises an electric telescopic rod (380) installed in the middle of the fixed frame (31); a lifting plate (381) is installed at the telescopic end of the electric telescopic rod (380); a push-pull rod (382) is hinged between the lifting plate (381) and the displacement plate (35); the electric telescopic rod (380) pulls the lifting plate (381) to move upward, and a triangular stable structure is formed between two push-pull rods (382) symmetrically arranged on the lifting plate (381) and the displacement plate (35); The four supplementary strips (37) are all equipped with a sealing pressing driving group (39) for pressing the connection group (13) downward when the angle between the supporting and pressing rod (301) and the displacement plate (35) gradually decreases; By cooperating with the expansion plate (12) and the telescopic support mechanism (3) installed at the lower end of the sampling box (1), the sampling device can be applied not only to the ground but also to an ecological environment with a certain water depth. Before and after adjustment, the telescopic support mechanism (3) forms a triangular stable support structure around the sampling box (1) through the displacement plate (35), the support rod (301) and the guide rod (30).

2. The sampling device for monitoring and collecting carbon dioxide in an ecosystem according to claim 1, characterized in that: The connection group (13) comprises a fixed frame (130) in a rectangular structure fixedly mounted on the expansion plate (12); the fixed frame (130) is connected to the rectangular frame (10) via a sliding connection piece; the tops of the four horizontal sections of the fixed frame (130) are all provided with wedge-resistant strips (131) symmetrically arranged along the horizontal sections and located on both sides of the corresponding displacement plates (35); the outer walls of the four horizontal sections at the lower end of the rectangular frame (10) are all provided with inverted L-shaped support plates (132) corresponding to the wedge-resistant strips (131) one by one; the horizontal sections of the support plates (132) are slidably connected with pressure strips (133); the opposing surfaces of the pressure strips (133) and the wedge-resistant strips (131) are matching inclined surfaces.

3. The sampling device for monitoring and collecting carbon dioxide in an ecosystem according to claim 1, characterized in that: The insertion group (32) comprises a plurality of inclined insertion rods (320) installed at the center of the fixing frame (31), the insertion rods (320) and the horizontal sections of the fixing frame (31) are arranged alternately, and the lower ends of the insertion rods (320) are conical and located below the rectangular frame (10).

4. The sampling device for monitoring and collecting carbon dioxide in an ecosystem according to claim 2, characterized in that: The sliding connection member comprises a fixing seat (140) installed on four top corners of the rectangular frame (10) near the lower end, a sliding block (141) sliding up and down is connected to the fixing seat (140), and a connecting rod (142) is hinged between the sliding block (141) and the top of the fixing frame (130).

5. The sampling device for monitoring and collecting carbon dioxide in an ecosystem according to claim 2, characterized in that: The sealing pressure driving group (39) comprises a rotating shaft (390) rotatably connected to the supplementary strip (37) and fixedly passing through the supporting rod (301), and a fixed sleeve is provided with evenly arranged cams (391) on the rotating shaft (390), and the cams (391) correspond to the pressure strip (133).

6. The sampling device for monitoring and collecting carbon dioxide in an ecosystem according to claim 1, characterized in that: The guide rod (30) is sleeved with a sliding sleeve (302) that slides up and down, and symmetrically arranged rib bars (303) are installed between the tops of the four horizontal sections of the rectangular frame (10) located at the lower side and the sliding sleeve (302), and the two rib bars (303) connected to the same sliding sleeve (302) are arranged in an eight-shaped shape.

7. The sampling device for monitoring and collecting carbon dioxide in an ecosystem according to claim 1, characterized in that: Two expansion panels (350) are mounted on one end of the displacement plate (35) away from the sampling box (1) and arranged symmetrically along the width direction of the displacement plate (35).

8. The sampling device for monitoring and collecting carbon dioxide in an ecosystem according to claim 2, characterized in that: The inclined surface of the pressing strip (133) is rollingly mounted with a ball, and the pressing strip (133) is in rolling contact with the inclined surface of the wedge-resistant strip (131) via the ball.

9. A sampling method for monitoring and collecting carbon dioxide in an ecosystem, which is accomplished by using the sampling device for monitoring and collecting carbon dioxide in an ecosystem as claimed in claim 1, characterized in that: The following steps are involved: S1, sampling area determination: determining the sampling location for carbon dioxide monitoring, and determining whether the bottom of the sampling box (1) needs to be extended and adjusted according to the sampling environment requirements; S2, support, fixation and sealing: the sampling box (1) and the telescopic support mechanism (3) are supported by inserting the fixing group (32) into the ground, and the telescopic support mechanism (3) is activated according to the use requirements. When monitoring the soil or grassland, the telescopic support mechanism (3) cooperates with the sealing pressure driving group (39) and the connecting group (13) to press the expansion plate (12), so that the sealing gasket is pressed against the grassland or soil; when monitoring the environmental area with a certain water depth, the lifting driving group (38), the displacement plate (35), the support rod (301) and the rectangular frame (10) cooperate to push the sampling box (1) upward to increase the bottom of the sampling box (1); S3, gas collection: the sampling box (1) captures the carbon dioxide gas released in its enclosed area. After a certain period of time, the sampling mechanism (2) extracts the carbon dioxide in the sampling box (1) into the existing sampling bag.

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