Atmospheric dry-wet sedimentation nitrogen flux collecting device

Abstract

The invention discloses an atmospheric dry and wet deposition nitrogen flux collection device, and relates to the technical field of atmospheric nitrogen collection equipment. The dry sedimentation collecting part and the wet sedimentation collecting part can slide relatively, and the dry sedimentation collecting part can act between a first position and a second position in the vertical direction; when the dry sedimentation collecting piece is in the first position, the position of the opening of the wet sedimentation collecting piece is lower than that of the opening of the dry sedimentation collecting piece, the opening of the dry sedimentation collecting piece can be opened, and the opening of the wet sedimentation collecting piece can be closed; when the dry sedimentation collecting piece is in the second position, the highest position of the dry sedimentation collecting piece is not higher than the position of the opening of the wet sedimentation collecting piece, the opening of the dry sedimentation collecting piece can be closed, and the opening of the wet sedimentation collecting piece can be opened. According to the invention, inaccuracy of data collected by the wet sedimentation collection piece due to shielding of the dry sedimentation collection piece can be avoided, and the accuracy of a detection result is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of atmospheric nitrogen collection equipment, and particularly to an atmospheric wet and dry deposition nitrogen flux collection device. Background Art

[0002] Atmospheric nitrogen deposition under human interference has become an important part of the global nitrogen biogeochemical cycle. Since atmospheric wet and dry deposition nitrogen is affected by many factors in different seasons, different climate regions, and different ecological conditions, different researchers usually adopt different sampling and measurement methods according to their own research needs.

[0003] When the sampling method is such that the opening of the dry deposition collection device is at a relatively higher height from the ground than the opening of the wet deposition collection device, during the process of collecting atmospheric nitrogen using the above-mentioned equipment, the dry deposition collection device can work normally. However, during rainfall, when the opening of the dry deposition collection device is closed and the opening of the wet deposition collection device is opened, under the influence of environmental wind or other external factors, the rain does not fall vertically. This causes the dry deposition collection device at a higher position to easily block the normal fall of rainwater, resulting in some rainwater being blocked by the dry deposition collection device and unable to enter the wet deposition collection device, making the data collected by the wet deposition collection device inaccurate and affecting the final detection result. Summary of the Invention

[0004] The purpose of the present invention is to provide an atmospheric wet and dry deposition nitrogen flux collection device to solve the problems existing in the above-mentioned prior art, and to avoid inaccurate data collected by the wet deposition collection part due to the blockage of the dry deposition collection part.

[0005] To achieve the above purpose, the present invention provides the following solution:

[0006] The present invention provides an atmospheric wet and dry deposition nitrogen flux collection device, including:

[0007] A wet deposition collection part;

[0008] And a dry deposition collection part, the dry deposition collection part and the wet deposition collection part can slide relative to each other, and the dry deposition collection part can move between a first position and a second position in the vertical direction;

[0009] When the dry deposition collection part is in the first position, the position where the opening of the wet deposition collection part is located is lower than the position where the opening of the dry deposition collection part is located, and the opening of the dry deposition collection part can be opened and the opening of the wet deposition collection part can be closed;

[0010] When the dry deposition collector is in the second position, the highest position of the dry deposition collector is not higher than the position where the opening of the wet deposition collector is located, and the opening of the dry deposition collector can be closed and the opening of the wet deposition collector can be opened.

[0011] Preferably, it further includes a shielding cover which can slide in the horizontal direction and is used to close the opening of the dry deposition collector or the opening of the wet deposition collector.

[0012] Preferably, it further includes a support plate. The wet deposition collector is arranged on the support plate. The shielding cover is slidably connected to the support plate, and a pushing unit for driving the shielding cover to slide is also arranged on the support plate.

[0013] Preferably, a chute is arranged on the support plate, and the slider of the shielding cover is adapted to the chute;

[0014] The pushing unit is an elastic element. The elastic element is located in the chute, one end of the elastic element contacts the slider, and the other end of the elastic element contacts the inner wall of the chute. When the dry deposition collector is in the first position, the side wall of the shielding cover contacts the dry deposition collector through the elastic element;

[0015] Alternatively, the pushing unit is a first driving member. The fixed end of the first driving member is fixed to the inner wall of the chute, and the telescopic end of the first driving member is fixed to the slider.

[0016] Preferably, the dry deposition collector includes:

[0017] A lifting frame which is arranged in a receiving groove on one side of the support plate and is slidably connected to the support plate;

[0018] An installation base which is fixed on the lifting frame and is located on the side of the lifting frame away from the support plate;

[0019] And a dry collection cylinder which is arranged on the installation base.

[0020] Preferably, the receiving groove is provided with a first guiding portion, and a second guiding portion adapted to the first guiding portion is arranged on one side of the lifting frame close to the first guiding portion.

[0021] Preferably, rollers are arranged on the side of the shielding cover close to the dry deposition collector, and the rollers can be in rolling connection with the lifting frame.

[0022] Preferably, it further includes a second driving member which can drive the dry deposition collector to move between the first position and the second position.

[0023] Preferably, it further includes a weather acquisition unit, which is electrically connected to the controller and is used to acquire weather information.

[0024] Preferably, a counterweight unit is provided on the support plate, and the counterweight unit and the dry deposition collector are respectively arranged on both sides of the wet deposition collector;

[0025] And / or,

[0026] A reinforcing member is provided on the support plate, and the reinforcing member and the dry deposition collector are respectively arranged on both sides of the wet deposition collector, and the reinforcing member can extend into the ground.

[0027] The present invention has achieved the following technical effects compared with the prior art:

[0028] When the dry deposition collector of the present invention is working, when the dry deposition collector is in the first position, the opening height of the dry deposition collector can be at a preset height, and the height of the wet deposition collector is relatively low. When the dry deposition collector collects dry deposition samples, it can be avoided being affected by the wet deposition collector, realizing the normal collection of dry deposition samples; when rainfall is used to collect wet deposition samples, the dry deposition collector can move down, and the dry deposition collector is in the second position, so that the height of the dry deposition collector is lower than the opening of the wet deposition collector. The self-structure of the dry deposition collector cannot block the vertically falling rainwater or the obliquely falling rainwater from entering the wet deposition collector, ensuring the normal operation of the wet deposition collector, improving the accuracy of the collected data, and further ensuring the accuracy of the detection results. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0030] Figure 1 Schematic diagram of the atmospheric dry and wet deposition nitrogen flux collection device of the present invention (the dry deposition collector is in the first position);

[0031] Figure 2 For Figure 1 top view;

[0032] Figure 3 Schematic diagram of the atmospheric dry and wet deposition nitrogen flux collection device of the present invention (the dry deposition collector is in the second position);

[0033] Figure 4Schematic diagram of the connection relationship between the first driving member and the shielding cover of the present invention;

[0034] Figure 5 Exploded view of the connection relationship between the lifting frame and the support plate of the present invention;

[0035] Figure 6 Schematic diagram of the connection relationship between the first guiding portion and the second guiding portion of the present invention;

[0036] Figure 7 Exploded view of the dry deposition collector of the present invention;

[0037] In the figure: 1. Wet deposition collector; 101. Base; 102. Cylinder; 2. Dry deposition collector; 201. Lifting frame; 202. Installation base; 203. Dry collection cylinder; 204. Groove; 205. Notch; 3. Shielding cover; 4. Support plate; 5. Slide groove; 6. Connecting plate; 7. Slide block; 8. Elastic element; 9. First driving member; 10. Accommodating groove; 11. Protrusion; 12. Depression; 13. Roller; 14. Second driving member; 15. Controller; 16. Counterweight unit; 17. Reinforcing member. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] The purpose of the present invention is to provide an atmospheric dry and wet deposition nitrogen flux collection device to solve the problems existing in the above-mentioned prior art, and to avoid inaccurate data collected by the wet deposition collector caused by the shielding of the dry deposition collector.

[0040] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0041] As Figures 1 to 7As shown in the figure, this embodiment provides an atmospheric wet and dry deposition nitrogen flux collection device, including: a wet deposition collection member 1 for collecting wet deposition samples (i.e., rainwater and substances carried in the rainwater); and a dry deposition collection member 2 for collecting dry deposition samples. The dry deposition collection member 2 is located on one side of the wet deposition collection member 1, and the dry deposition collection member 2 and the wet deposition collection member 1 can slide relative to each other. The dry deposition collection member 2 can move between a first position and a second position in the vertical direction so that the relative position of the dry deposition collection member 2 and the wet deposition collection member 1 in the vertical direction can be changed; when the dry deposition collection member 2 is in the first position, the position where the opening of the wet deposition collection member 1 is located is lower than the position where the opening of the dry deposition collection member 2 is located, and the opening of the dry deposition collection member 2 can be opened and the opening of the wet deposition collection member 1 can be closed; when the dry deposition collection member 2 is in the second position, the highest position of the dry deposition collection member 2 is not higher than the position where the opening of the wet deposition collection member 1 is located, and the opening of the dry deposition collection member 2 can be closed and the opening of the wet deposition collection member 1 can be opened. When the dry deposition collection member 2 of this embodiment is in the first position, the opening height of the dry deposition collection member 2 can be located at a preset height, and the height of the wet deposition collection member 1 is relatively low. When the dry deposition collection member 2 collects dry deposition samples, it is avoided being affected by the wet deposition collection member 1, realizing the normal collection of dry deposition samples; when collecting wet deposition samples during rainfall, the dry deposition collection member 2 can move downwards so that the height of the dry deposition collection member 2 is lower than the opening of the wet deposition collection member 1. The own structure of the dry deposition collection member 2 cannot block the vertically falling rainwater or the obliquely falling rainwater from entering the wet deposition collection member 1, ensuring the accurate collection of rainwater in the wet deposition collection member 1.

[0042] In a feasible implementation manner, the wet deposition collection member 1 includes a base 101 and a cylinder 102 fixed on the top of the base 101. The top opening of the cylinder 102 is used to collect rainwater. The base 101 is used to be buried in the soil layer to support the cylinder 102. The diameter of the cylinder 102 is 20 cm and the height is 65 cm, and the height of the base 101 is 10 cm.

[0043] In a feasible implementation, the dry deposition collector 2 includes: a lifting frame 201, which is arranged in the accommodation groove 10 on one side of the support plate 4 and is slidably and limit-connected to the support plate 4; a mounting base 202, which is fixed on the lifting frame 201 and is located on the side of the lifting frame 201 away from the support plate 4; and a dry collection cylinder 203, which is arranged on the mounting base 202. The lifting frame 201, the mounting base 202 and the dry collection cylinder 203 move synchronously to switch between a first position and a second position. The lifting frame 201 can be limited by the support plate 4 and move vertically along the support plate 4. The mounting base 202 is used to support the dry collection cylinder 203. Distilled water with a liquid level height of 5 cm is kept in the dry collection cylinder 203. In summer, 1 mL of copper sulfate solution with a concentration of 2 mol·L -1 is added to the dry collection cylinder 203 to prevent the growth of bacteria and algae. During sampling, the water sample in the dry collection cylinder 203 is first filtered through a 0.45-μm organic microporous membrane. After recording the volume of the water sample, it is frozen for analyzing the concentration of NH 4 + and NO 3 - as well as the total nitrogen (DTN).

[0044] In a feasible implementation, referring to Figure 7 , a groove 204 is formed on the top surface of the mounting base 202. The inner diameter of the groove 204 is adapted to the outer diameter of the dry collection cylinder 203. The dry collection cylinder 203 is located in the groove 204 and is restricted by the mounting base 202, so that the dry collection cylinder 203 is not easily separated from the groove 204. Preferably, when the dry collection cylinder 203 is located in the groove 204, the opening at the top of the dry collection cylinder 203 is flush with the top plane of the mounting base 202, and at least one notch 205 is formed on the inner wall of the groove 204 to facilitate the separation of the dry collection cylinder 203 and the groove 204 through the notch 205.

[0045] In a feasible implementation, it further includes a shielding cover 3. The shielding cover 3 can slide in the horizontal direction and is used to close the opening of the dry deposition collector 2 or the opening of the wet deposition collector 1. Specifically, when the dry deposition collector 2 is in the first position, the shielding cover 3 shields the opening of the wet deposition collector 1. When the dry deposition collector 2 is in the second position, the shielding cover 3 can move horizontally relative to the wet deposition collector 1 to open the opening of the wet deposition collector 1 and close the opening of the dry deposition collector 2. When collecting dry deposition samples, the shielding cover 3 shields the opening of the wet deposition collector 1 to prevent the rainwater in the wet deposition collector 1 from evaporating and the dry deposition samples from entering the wet deposition collector 1. When collecting wet deposition samples during rainfall, the height of the dry deposition collector 2 is lowered and its highest position (preferably the opening at the top of the dry collection cylinder 203) is not higher than the opening of the wet deposition collector 1, so that after the shielding cover 3 is translated, it not only opens the opening of the wet deposition collector 1 but also closes the opening of the dry collection cylinder 203, realizing the collection of wet deposition samples while preventing the wet deposition samples from entering the dry collection cylinder 203 and mixing with the dry deposition samples. The adoption of a switching and closing setting method with one shielding cover 3 reduces the number of shielding covers 3 on the one hand, and on the other hand, the opening of the wet deposition collector 1 can be opened and the opening of the dry deposition collector 2 can be closed by the action of one pushing unit, reducing the operation complexity and improving the switching efficiency of different sample collections.

[0046] In a feasible implementation, the shielding cover 3 can be moved horizontally by manual pushing to close the wet deposition collector 1 or the dry deposition collector 2.

[0047] In a feasible implementation, it further includes a support plate 4. The side wall of the wet deposition collector 1 is sleeved and fixed with the support plate 4. The shielding cover 3 is arranged above the support plate 4 and is slidably connected to the support plate 4. The support plate 4 is also provided with a pushing unit for driving the shielding cover 3 to slide. When the dry deposition collector 2 is in the second position, the pushing unit can drive the shielding cover 3 to approach the dry deposition collector 2, so that the shielding cover 3 automatically opens the opening of the wet deposition collector 1 and closes the opening of the dry deposition collector 2. The pushing unit is arranged on the support plate 4. When the dry deposition collector 2 is in the second position, the pushing unit can drive the shielding cover 3 to move according to the position of the dry deposition collector 2, so as to automatically and labor-savingly move the shielding cover 3 to the position where it shields the dry deposition collector 2. The operator does not need to adjust the positions of the shielding covers 3 on the switching collection devices one by one, avoiding rainwater entering the dry collection cylinder 203 caused by some shielding covers 3 not closing the dry collection cylinder 203 in time.

[0048] In a feasible implementation, the support plate 4 is provided with a sliding groove 5. A sliding block 7 is fixed to the side wall of the shielding cover 3 through a connecting plate 6. The sliding block 7 is located in the sliding groove 5 and is adapted to the sliding groove 5.

[0049] In a feasible implementation manner, the pushing unit has two structures: First, the pushing unit is an elastic element 8, preferably a spring. The elastic element 8 is located in the sliding groove 5, and one end of the elastic element 8 contacts the slider 7, and the other end of the elastic element 8 contacts the inner wall of the sliding groove 5. When the dry deposition collector 2 is in the first position, the side wall of the shielding cover 3 contacts the dry deposition collector 2 through the elastic element 8. When the dry deposition collector 2 is working, the elastic element 8 is in a compressed state and makes the shielding cover 3 have a tendency to move towards the dry deposition collector 2. When the dry deposition collector 2 moves downward in the vertical direction and releases the support for the shielding cover 3, the shielding cover 3 extends under the action of the elastic element 8 and is located above the dry deposition collector 2 to close the opening of the dry deposition collector 2. By using the cooperation of the elastic element 8 and the shielding cover 3, the overall structure is simple and the use cost is reduced. Second, the pushing unit is a first driving member 9. The fixed end of the first driving member 9 is fixed to the inner wall of the sliding groove 5, and the telescopic end of the first driving member 9 is fixed to the slider 7. The first driving member 9 is one of an electric telescopic cylinder, a hydraulic telescopic cylinder or a motor screw slide table structure, so as to be able to drive the slider 7 to reciprocate in the sliding groove 5 through the first driving member 9, so that the shielding cover 3 can not only move towards the direction close to the dry deposition collector 2 to close the opening of the dry deposition collector 2, but also move away from the dry deposition collector 2 to close the opening of the wet deposition collector 1. On the one hand, it is ensured that the shielding cover 3 can open the opening of the wet deposition collector 1 and close the opening of the dry deposition collector 2 before or during rainfall, and at the same time, it can also be realized that after rainfall, the shielding cover 3 can close the opening of the wet deposition collector 1 and open the opening of the dry deposition collector 2 to realize long-term collection of sediment samples.

[0050] In a feasible implementation manner, the receiving groove 10 is provided with a first guiding portion, and the first guiding portion is preferably a protruding portion 11. A second guiding portion adapted to the first guiding portion is provided on one side of the lifting frame 201 close to the first guiding portion, and the second guiding portion is preferably a recessed portion 12. The receiving groove 10 is arranged on one side of the support plate 4 close to the lifting frame 201, and the lifting frame 201 is located in the receiving groove 10 and is adapted to the receiving groove 10 to limit the moving direction of the lifting frame 201 through the receiving groove 10. At the same time, through the cooperation of the protruding portion 11 and the recessed portion 12, the moving direction of the lifting frame 201 is further restricted, so that the lifting frame 201 can move relative to the support plate 4 in the vertical direction.

[0051] In a feasible implementation manner, a roller 13 is provided on one side of the shielding cover 3 close to the dry deposition collector 2, and the roller 13 can be in rolling connection with the lifting frame 201. When the lifting frame 201 moves in the vertical direction, for example, during the process of the dry deposition collector 2 moving from the first position to the second position, the presence of the roller 13 reduces the friction between the shielding cover 3 and the lifting frame 201, which is more conducive to the lifting frame 201 moving relative to the shielding cover 3 in the vertical direction.

[0052] In a feasible implementation manner, a second driving member 14 is further included. The fixed end of the second driving member 14 is fixed to the outer wall of the wet deposition collector 1, and the telescopic end of the second driving member 14 is connected to the dry deposition collector 2. The second driving member 14 can drive the dry deposition collector 2 to move between a first position and a second position. The second driving member 14 is one of an electric telescopic cylinder, a hydraulic telescopic cylinder, or a motor lead screw slide table structure. Through the second driving member 14, not only can the support for the dry deposition collector 2 be realized, but also the dry deposition collector 2 can be driven to move and switch between the first position and the second position. Specifically, taking the second driving member 14 as an electric telescopic cylinder as an example, the fixed end of the electric telescopic cylinder is fixed on the side wall of the base 101 or the cylinder body 102, and the movable end of the electric telescopic cylinder is fixed to the lifting frame 201. Through the electric telescopic cylinder, the lifting frame 201 can be maintained at a preset height, and at the same time, the lifting frame 201 can be driven to move and change its position in the vertical direction.

[0053] In a feasible implementation manner, when multiple collection devices are provided, for the convenience of control, the following are further included: a controller 15, which is arranged on the wet deposition collector 1 and is electrically connected to the first driving member 9 and the second driving member 14; a weather acquisition unit, which is arranged on the wet deposition collector 1 and is electrically connected to the controller 15. The controller 15 controls the first driving member 9 and / or the second driving member 14 to work according to the weather information acquired by the weather acquisition unit. One controller 15 is arranged on each wet deposition collector 1. The controller 15 judges whether it is in the dry deposition sample collection state or the wet deposition sample collection state according to the information sent by the weather acquisition unit (not shown in the figure), and then controls the first driving member 9 and the second driving member 14 to work to switch different sample collection states.

[0054] In a feasible implementation manner, the weather acquisition unit includes a weather detector for detecting the environmental information of the location where the wet deposition collector 1 and the dry deposition collector 2 are located; and / or a communicator capable of receiving the environmental information of the location where the wet deposition collector 1 and the dry deposition collector 2 are located and sending the received information to the controller 15. When the weather detector is used, the weather detector is a rain detector. When rainfall is detected, information is sent to the controller 15 for the next operation. When the communicator is used, the operator judges whether there is rainfall according to the weather forecast or the real-time environment. If there is rainfall, a signal is sent to the communicator, and the communicator sends the signal to the controller 15. The above two setting methods can both conveniently realize the switching of the collection device between the dry deposition sample collection state and the wet deposition sample collection state.

[0055] In a feasible implementation, a counterweight unit 16 is provided on the support plate 4, and the counterweight unit 16 and the dry deposition collector 2 are respectively arranged on both sides of the wet deposition collector 1; and / or, a reinforcing member 17 is provided on the support plate 4, and the reinforcing member 17 and the dry deposition collector 2 are respectively arranged on both sides of the wet deposition collector 1, and the reinforcing member 17 can extend into the ground to support the support plate 4.

[0056] It can be understood that when the dry deposition collector 2 is arranged on one side of the wet deposition collector 1, there is a large difference in the load bearing on both sides of the wet deposition collector 1. In order to improve the installation stability of the wet deposition collector 1, a counterweight unit 16 is arranged on the side of the wet deposition collector 1 opposite to the dry deposition collector 2 to balance the load bearing on both sides of the wet deposition collector 1. The counterweight unit 16 includes a placement box fixed on the side wall of the cylinder 102 and counterweight blocks arranged in the placement box, and the counterweight of the counterweight blocks can be determined according to actual needs. Alternatively, a reinforcing member 17 can also be arranged on the support plate 4. The reinforcing member 17 is one of a hollow cylinder, a solid rod or a screw rod. By connecting the reinforcing member 17 with the soil layer, the installation stability of the wet deposition collector 1 can also be improved. Of course, the counterweight unit 16 and the reinforcing member 17 can also be used in combination.

[0057] In the present invention, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An atmospheric dry and wet deposition nitrogen flux collection device, characterized in that: include: Wet precipitation collection element (1); and a dry precipitation collection piece (2), wherein the dry precipitation collection piece (2) and the wet precipitation collection piece (1) are capable of sliding relative to each other, and the dry precipitation collection piece (2) is capable of moving between a first position and a second position in a vertical direction; When the dry precipitation collection piece (2) is in the first position, the position of the opening of the wet precipitation collection piece (1) is lower than the position of the opening of the dry precipitation collection piece (2), and the opening of the dry precipitation collection piece (2) can be opened and the opening of the wet precipitation collection piece (1) can be closed; When the dry precipitation collection piece (2) is in the second position, the highest position of the dry precipitation collection piece (2) is not higher than the position of the opening of the wet precipitation collection piece (1), and the opening of the dry precipitation collection piece (2) can be closed and the opening of the wet precipitation collection piece (1) can be opened.

2. The atmospheric dry and wet deposition nitrogen flux collection device according to claim 1, characterized in that: It also comprises a shielding cover (3), which is capable of sliding in a horizontal direction, and is used to close the opening of the dry precipitation collection element (2) or the opening of the wet precipitation collection element (1).

3. The atmospheric dry and wet deposition nitrogen flux collection device according to claim 2, characterized in that: It also comprises a support plate (4), the wet precipitation collection element (1) is arranged on the support plate (4), the shielding cover (3) is slidably connected to the support plate (4), and the support plate (4) is also provided with a pushing unit for driving the shielding cover (3) to slide.

4. The atmospheric dry and wet deposition nitrogen flux collection device according to claim 3, characterized in that: The support plate (4) is provided with a slide groove (5), and the slider (7) of the shielding cover (3) is adapted to the slide groove (5); The pushing unit is an elastic element (8), the elastic element (8) is located in the slide groove (5), one end of the elastic element (8) is in contact with the slider (7), and the other end of the elastic element (8) is in contact with the inner wall of the slide groove (5); when the dry sedimentation collecting element (2) is located in the first position, the side wall of the shielding cover (3) is in contact with the dry sedimentation collecting element (2) through the elastic element (8); Alternatively, the pushing unit is a first driving member (9), a fixed end of the first driving member (9) is fixed to the inner wall of the slide groove (5), and a telescopic end of the first driving member (9) is fixed to the slide block (7).

5. The atmospheric dry and wet deposition nitrogen flux collection device according to claim 3, characterized in that: The dry precipitation collection element (2) comprises: A lifting frame (201), the lifting frame (201) is arranged in a receiving groove (10) on one side of the support plate (4) and is slidably connected to the support plate (4); A mounting base (202), the mounting base (202) being fixed on the lifting frame (201) and being located on a side of the lifting frame (201) away from the support plate (4); and a dry collection cylinder (203), wherein the dry collection cylinder (203) is disposed on the mounting base (202).

6. The atmospheric dry and wet deposition nitrogen flux collection device according to claim 5, characterized in that: The accommodating groove (10) is provided with a first guide portion, and a second guide portion adapted to the first guide portion is provided on a side of the lifting frame (201) close to the first guide portion.

7. The atmospheric dry and wet deposition nitrogen flux collection device according to claim 5, characterized in that: A roller (13) is provided on one side of the shielding cover (3) close to the dry precipitation collection element (2), and the roller (13) can be rollingly connected to the lifting frame (201).

8. The atmospheric dry and wet deposition nitrogen flux collection device according to claim 1, characterized in that: It also includes a second driving member (14), which can drive the dry precipitation collection member (2) to move between the first position and the second position.

9. The atmospheric dry and wet deposition nitrogen flux collection device according to claim 1, characterized in that: It also includes a weather acquisition unit, which is electrically connected to the controller (15) and is used to acquire weather information.

10. The atmospheric dry and wet deposition nitrogen flux collection device according to claim 3, characterized in that: A counterweight unit (16) is arranged on the support plate (4), and the counterweight unit (16) and the dry precipitation collection element (2) are respectively arranged on both sides of the wet precipitation collection element (1); and / or, A reinforcing member (17) is arranged on the support plate (4), the reinforcing member (17) and the dry precipitation collection member (2) are respectively arranged on both sides of the wet precipitation collection member (1), and the reinforcing member (17) can extend into the ground.

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