A sampling device for wetland ecological restoration

Abstract

The present invention relates to the technical field of ecological sampling, and discloses a sampling device for wetland ecological restoration, comprising a fixed frame, wherein a positive and negative pressure control air pump is fixedly connected inside the fixed frame, a lifting drive ring is fixedly connected inside the positive and negative pressure control air pump, a sampling tube for sampling is installed inside the lifting drive ring, and a positioning support foot for positioning is arranged outside the fixed frame; a first airbag is inflated by the positive and negative pressure control air pump, so that the first airbag expands outside the fixed frame to form a suspended part, so that the sampling device floats in the water area, and the sampling tube performs water sampling, and the sampling device performs soil sampling or water sampling by controlling the first airbag, so that the same device performs amphibious sampling, and the sampling diversity of the sampling device is effectively increased, thereby reducing the sampling cost and sampling difficulty of wetland ecology.

Description

Technical Field

[0001] The invention relates to the technical field of ecological sampling, in particular to a sampling device for wetland ecological restoration. Background Art

[0002] Wetlands are areas where the surface is too wet or water accumulates frequently. Wetland ecosystems have multiple ecological functions, such as conserving water sources, purifying water quality, and maintaining biodiversity. They are an important part of natural ecosystems. In order to maintain the stability of wetlands and repair abnormal wetland ecosystems, it is usually necessary to sample wetland ecosystems. The environmental status of wetland ecosystems is determined by analyzing the samples, which facilitates ecological maintenance or restoration.

[0003] However, due to the diversity of wetland ecological environment, it often includes overly wet soil areas or small areas of water accumulation. When sampling, soil sampling and water sampling are usually required. However, the existing sampling devices can usually only sample a single element when sampling. Soil sampling devices and water sampling devices are not interchangeable, which leads to a limited scope of use of existing sampling devices and certain limitations. When sampling, multiple sets of sampling equipment need to be prepared, which increases the sampling cost and increases the inconvenience of sampling. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a sampling device for wetland ecological restoration, which has the advantages of aquatic two-way sampling and effectively improves the application scope of the sampling device.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A sampling device for wetland ecological restoration, comprising a fixed frame, a positive and negative pressure control air pump is fixedly connected to the inside of the fixed frame, a lifting drive ring is fixedly connected to the inside of the positive and negative pressure control air pump, a sampling tube for sampling is installed inside the lifting drive ring, and a positioning foot for positioning is arranged outside the fixed frame;

[0007] The positioning legs are provided in at least three groups and are connected to the outside of the fixing frame in a centrally symmetrical rotation manner;

[0008] The positioning support leg comprises a connecting support, the end of the connecting support is fixedly connected with a buffer pressure plate, the outside of the buffer pressure plate is fixedly connected with a nailing rod, and the nailing rod is used to be nailed to the ground to fix the fixing frame.

[0009] Preferably: an annular groove is provided inside the fixing frame, a movable ring is slidably connected inside the annular groove, a clamping block is fixedly connected outside the movable ring, a limiting block is fixedly connected to the top of the fixing frame, the clamping block is slidably connected inside the limiting block, a positioning groove is provided on the connecting support, the clamping block is used to fix the positioning foot through the positioning groove, and the positioning foot is provided with a vertical state and a horizontal state.

[0010] Preferably: a fixed pressure plate is detachably installed on the outside of the fixing frame, and the fixed pressure plate is used to be pressed into the notch position of the annular groove. The external thread of the clamping block is connected with a positioning screw, and the positioning screw passes through the clamping block. The positioning screw is used to abut the top surface of the fixing frame to fix the positioning screw.

[0011] Preferably: a mounting groove is provided at the bottom of the fixing frame, the interior of the mounting groove is filled with a first airbag, a detachable sealing cover is provided on the outside of the mounting groove, the first airbag is connected to the air delivery end of the positive and negative pressure control air pump, a side connecting groove for the first airbag to pass through is provided on the side of the mounting groove, and a sealing strip is bonded to the outside of the side connecting groove.

[0012] Preferably: a second airbag is provided inside the nailing rod, connecting openings for releasing the second airbag are opened on both sides of the nailing rod, side protective doors are elastically hinged on the outer sides of the connecting openings on both sides of the nailing rod, and the side protective doors always tend to close the connecting opening of the nailing rod under elastic conditions, and the outside of the positive and negative pressure control air pump is fixedly connected with a support leg connecting air pipe, the support leg connecting air pipe is connected with the second airbag, the support leg connecting air pipe is connected with the air delivery end of the positive and negative pressure control air pump, and the positive and negative pressure control air pump is used to pump air into the second airbag through the support leg connecting air pipe.

[0013] Preferably: a lifting drive for driving the sampling tube to move up and down is arranged inside the lifting drive ring, a sampling port is opened at the bottom of the sampling tube, a drilling head is fixedly connected to the bottom of the sampling tube, and the drilling head is arranged as a spiral blade.

[0014] Preferably, a plurality of adsorption ports are provided at the side bottom of the sampling tube, a closing cover plate for closing the sampling port is spirally connected to the outside of the sampling port, and a connecting hole is provided at the adsorption port.

[0015] Preferably: the top of the sampling tube is fixedly connected with a connecting head, the outside of the positive and negative pressure control air pump is fixedly connected with a fixed tube, the inside of the fixed tube is movably connected with a telescopic air pipe, the movable end of the telescopic air pipe is fixedly connected with a movable interface sleeve for connecting to the connecting head, and the air delivery end of the positive and negative pressure control air pump is connected to the inside of the sampling tube through the telescopic air pipe and the connecting head.

[0016] Preferably, the sampling tube is composed of a plurality of movable sections, and the sampling tube at least includes a tail section with a connecting head and a head section with a drilling head, and a plurality of intermediate sections for connection are arranged between the tail section and the head section.

[0017] Beneficial effects of the present invention:

[0018] 1. The sampling device for wetland ecological restoration controls the air pump to inflate the first airbag through positive and negative pressure, so that the first airbag expands outside the fixed frame to form a suspended part, which is convenient for the sampling device to float in the water area and the sampling tube to sample the water body. By controlling the first airbag, the sampling device is convenient for soil sampling or water sampling, and amphibious sampling is convenient through the same device, which effectively increases the sampling diversity of the sampling device, thereby reducing the sampling cost and sampling difficulty of wetland ecology;

[0019] 2. The sampling device for wetland ecological restoration controls the air pump to inflate the second airbag by controlling the positive and negative pressures, so that the second airbag pushes out the side protection door. Since the nailing rod has been nailed into the ground at this time, the side protection door of the nailing rod will squeeze the soil side wall of the outer nailing hole, thereby achieving the effect of stabilizing the nailing rod, which not only prevents the nailing rod from falling out during sampling, but also prevents the nailing rod from sinking deep into the wetland soil, thereby effectively ensuring the sampling stability of the sampling device;

[0020] 3. The sampling device for wetland ecological restoration is in a horizontal state by positioning the support legs. At this time, the side protection door is opened, and the second airbag is pulled out to both sides of the nailing rod. The air pump is controlled by positive and negative pressure to fill the second airbag with gas, so that the second airbag expands to form a stable suspension part. The stability of the fixed frame floating on the water body is ensured by the cooperation of the first airbag and the second airbag, so as to facilitate the stability of the sampling device in water sampling in the water environment;

[0021] 4. The sampling equipment for wetland ecological restoration forms an auxiliary negative pressure inside the sampling tube through positive and negative pressure control of the air pump, and samples the sampling tube through the negative pressure. Since the soil is moist, when the sampling port of the sampling tube contacts the soil, the moist soil has a sealing effect, and the negative pressure inside the sampling tube facilitates the simultaneous adsorption of moisture contained in the soil when sampling the moist soil, thereby ensuring the comprehensiveness of soil sampling, and sampling the soil layer and the moisture contained in the soil synchronously, thereby effectively ensuring the quality of moist soil sampling of the wetland ecology. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the present invention in an assembled state for soil sampling;

[0023] Figure 2 This is a schematic diagram of the bottom viewing angle of the present invention;

[0024] Figure 3It is a schematic diagram of the main part of the device of the present invention from a top perspective;

[0025] Figure 4 It is a schematic diagram of the explosion of the main structure of the device of the present invention;

[0026] Figure 5 It is a schematic diagram of the movable ring, the clamping block and the positioning screw of the present invention;

[0027] Figure 6 This is a schematic diagram of the positioning foot of the present invention;

[0028] Figure 7 This is a schematic diagram of the nailing rod and the internal structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the sampling tube of the present invention;

[0030] Fig. 9 This is a schematic diagram of the sampling tube of the present invention being divided into several sections;

[0031] Fig.10 This is a schematic diagram of the structure of the sampling head of the sampling tube of the present invention;

[0032] Fig.11 This is a schematic diagram of the positioning foot of the present invention being in a horizontal state;

[0033] Fig.12 It is a schematic diagram of the assembly state of the present invention for water sampling.

[0034] In the figure: 1, fixing frame; 11, annular groove; 12, limit block; 13, fixed pressure plate; 14, mounting groove; 15, first airbag; 16, side connecting groove; 17, sealing cover plate;

[0035] 2. Positive and negative pressure control air pump; 21. Fixed pipe; 22. Telescopic air pipe; 23. Support legs connected to air pipe;

[0036] 3. Lifting drive ring;

[0037] 4. Sampling tube; 41. Drilling head; 42. Sampling port; 43. Adsorption port; 44. Pipe connection head; 45. Closing cover;

[0038] 5. Positioning foot; 51. Connecting support; 52. Buffering plate; 53. Nail-in rod; 54. Side protection door; 55. Second airbag;

[0039] 6. Movable ring; 61. Clamping block; 62. Positioning screw. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0041] See also Figure 1 - Figure 4 A sampling device for wetland ecological restoration includes a fixed frame 1, a positive and negative pressure control air pump 2 is fixedly connected to the inside of the fixed frame 1, a lifting drive ring 3 is fixedly connected to the inside of the positive and negative pressure control air pump 2, a sampling tube 4 for sampling is installed inside the lifting drive ring 3, and a positioning foot 5 for positioning is arranged outside the fixed frame 1;

[0042] At least three groups of positioning legs 5 are provided, which are connected to the outside of the fixing frame 1 in a centrally symmetrical rotation manner;

[0043] The positioning support leg 5 comprises a connecting support 51 , an end of which is fixedly connected to a buffer pressure plate 52 , an exterior of the buffer pressure plate 52 is fixedly connected to a nailing rod 53 , and the nailing rod 53 is used to be nailed to the ground to fix the fixing frame 1 .

[0044] Among them, when the nail rod 53 is driven into the ground, the buffer pressure plate 52 contacts the ground, and the fixing frame 1 contacts the ground through the connecting support 51 and the buffer pressure plate 52, so that a buffer interval is formed between the fixing frame 1 and the ground, and the fixing frame 1 is controlled to be in a suspended state to avoid direct contact between the fixing frame 1 and the ground, which is convenient for sampling operations in wetland ecology and avoids over-wet ground or ground containing stagnant water from contaminating the sampling device.

[0045] refer to Figure 4 In an optional embodiment: an annular groove 11 is provided inside the fixing frame 1, a movable ring 6 is slidably connected inside the annular groove 11, a clamping block 61 is fixedly connected outside the movable ring 6, a limiting block 12 is fixedly connected to the top of the fixing frame 1, the clamping block 61 is slidably connected inside the limiting block 12, a positioning groove is provided on the connecting support 51, the clamping block 61 is used to fix the positioning leg 5 through the positioning groove, and the positioning leg 5 is provided with a vertical state and a horizontal state.

[0046] It should be noted that by pushing the movable ring 6 to slide inside the annular groove 11, the movable ring 6 drives the clamping block 61 to slide inside the limit block 12. When the clamping block 61 rotates away from the connecting support 51 and the clamping block 61 disengages from the positioning groove of the connecting support 51, the connecting support 51 can be rotated to control the connecting support 51 to be in a vertical state or a horizontal state. When the adjustment is completed, the movable ring 6 is pushed in the reverse direction to make the clamping block 61 re-clamped into the positioning groove of the connecting support 51. The position of the connecting support 51 is fixed by the clamping block 61, and the limit block 12 is sleeved on the outside of the clamping block 61. The limit block 12 can effectively ensure the stability of the clamping block 61, avoid deformation of the clamping block 61 and cause the connecting support 51, thereby ensuring the stability of the positioning support foot 5.

[0047] refer to Figure 5 In an optional embodiment: a fixed pressure plate 13 is detachably installed on the outside of the fixing frame 1, and the fixed pressure plate 13 is used to be pressed into the notch position of the annular groove 11. The external thread of the clamping block 61 is connected with a positioning screw 62, and the positioning screw 62 passes through the clamping block 61. The positioning screw 62 is used to abut the top surface of the fixing frame 1 to fix the positioning screw 62.

[0048] It should be noted that the use convenience of the device is effectively improved by controlling the position state of the positioning leg 5 by controlling the movable ring 6 and the clamping block 61. The movable ring 6 and the fixing frame 1 are in a detachable state, because the movable ring 6 and the annular groove 11 are in a partially exposed state, which facilitates the cleaning and maintenance of the annular groove 11 and the movable ring 6 by disassembling the movable ring 6, and the movable ring 6 and the clamping block 61 are used to directly fix the positioning leg 5, because when the clamping block 61 is deformed due to excessive positioning, it is also convenient to replace a new clamping block 61.

[0049] At the same time, when the clamping block 61 has finished fixing the positioning leg 5 , the positioning screw 62 is rotated so that the positioning screw 62 is locked to the clamping block 61 and the fixing frame 1 .

[0050] refer to Figure 2 In an optional embodiment: a mounting groove 14 is provided at the bottom of the fixing frame 1, the interior of the mounting groove 14 is filled with a first airbag 15, a detachable sealing cover plate 17 is provided on the outside of the mounting groove 14, the first airbag 15 is connected to the air delivery end of the positive and negative pressure control air pump 2, a side connecting groove 16 for the first airbag 15 to pass through is provided on the side of the mounting groove 14, and a sealing strip is bonded to the outside of the side connecting groove 16.

[0051] It should be noted that when soil sampling is performed on the ground environment, a sealing strip is bonded to the outside of the side communication groove 16 , and the sealing strip ensures the sealing and stability of the inside of the installation groove 14 .

[0052] When it is necessary to take water samples in a wetland water environment, it is necessary to remove the sealing strip, pull out the first airbag 15 from the side connecting groove 16, and at the same time inflate the first airbag 15 through the positive and negative pressure controlled air pump 2, so that the first airbag 15 expands outside the fixed frame 1 to form a suspended part, so that the sampling equipment can float in the water area and the sampling tube 4 can take water samples.

[0053] By controlling the first airbag 15, the sampling device can be used for soil sampling or water sampling, and amphibious sampling can be performed by the same device, thereby effectively increasing the sampling diversity of the sampling device and reducing the sampling cost and difficulty of wetland ecology.

[0054] refer to Figure 4 In an optional embodiment: a second airbag 55 is arranged inside the nailing rod 53, and connecting ports for releasing the second airbag 55 are opened on both sides of the nailing rod 53. Side protective doors 54 are elastically hinged on the outer sides of the connecting ports on both sides of the nailing rod 53. The side protective doors 54 always tend to close the connecting ports of the nailing rod 53 under elastic conditions. The outside of the positive and negative pressure control air pump 2 is fixedly connected with a support leg connecting air pipe 23, the support leg connecting air pipe 23 is connected to the second airbag 55, the support leg connecting air pipe 23 is connected to the air delivery end of the positive and negative pressure control air pump 2, and the positive and negative pressure control air pump 2 is used to pump air to the second airbag 55 through the support leg connecting air pipe 23.

[0055] It should be noted that:

[0056] refer to Figure 3 When taking soil samples for wetland ecology, when the nailing rod 53 is nailed into the ground, the positive and negative pressure control air pump 2 can be controlled to inflate the second airbag 55, so that the second airbag 55 pushes the side protection door 54 outward. Since the nailing rod 53 has been nailed into the ground at this time, the side protection door 54 of the nailing rod 53 will squeeze the soil side wall of the outer nailing hole, thereby achieving the effect of stabilizing the nailing rod 53, which not only prevents the nailing rod 53 from falling out during sampling, but also prevents the nailing rod 53 from sinking deep into the wetland soil, thereby effectively ensuring the sampling stability of the sampling equipment.

[0057] refer to Fig.11 At the same time, when sampling water for wetland ecology, the positioning support leg 5 is controlled to be in a horizontal state. At this time, the side protection door 54 is opened, and the second airbag 55 is pulled out to both sides of the nailing rod 53. The air pump 2 is controlled by positive and negative pressure to fill the second airbag 55 with gas, so that the second airbag 55 expands to form a stable suspension part, thereby ensuring the stability of the fixed frame 1 floating on the water body, thereby facilitating the stability of the sampling equipment in water environment for water sampling.

[0058] In an optional embodiment: a lifting drive for driving the sampling tube 4 to move up and down is arranged inside the lifting drive ring 3, a sampling port 42 is opened at the bottom of the sampling tube 4, a drilling head 41 is fixedly connected to the bottom of the sampling tube 4, and the drilling head 41 is arranged as a spiral blade.

[0059] It should be noted that the lifting drive is configured as a driving component for controlling the rotation of the sampling tube 4 .

[0060] Among them, the lifting drive includes but is not limited to the above-mentioned driving method. As a prior art, the lifting drive will not be described in detail in terms of structure and process.

[0061] refer to Figure 8 and Fig.10 In an optional embodiment: a plurality of adsorption ports 43 are provided at the side bottom of the sampling tube 4, a closing cover plate 45 for closing the sampling port 42 is spirally connected to the outside of the sampling port 42, and a connecting hole is provided at the adsorption port 43.

[0062] It should be noted that, when soil sampling is performed, in the initial state, the sampling tube 4 is located at the top of the lifting drive ring 3 (refer to Figure 1 ).

[0063] When sampling water, in the initial state, the sampling tube 4 is located at the bottom of the lifting drive ring 3, and the closed cover plate 45 is installed outside the sampling port 42. (Refer to Fig.12 ).

[0064] In an optional embodiment: the top of the sampling tube 4 is fixedly connected with a connecting head 44, the outside of the positive and negative pressure control air pump 2 is fixedly connected with a fixed tube 21, the inside of the fixed tube 21 is movably connected with a telescopic air pipe 22, the movable end of the telescopic air pipe 22 is fixedly connected with a movable interface sleeve for connecting to the connecting head 44, and the air delivery end of the positive and negative pressure control air pump 2 is connected to the inside of the sampling tube 4 through the telescopic air pipe 22 and the connecting head 44.

[0065] It should be noted that when sampling the soil, the positive and negative pressure controlled air pump 2 forms an auxiliary negative pressure inside the sampling tube 4, and the negative pressure assists the sampling tube 4 in sampling. Since the soil is moist, when the sampling port 42 of the sampling tube 4 contacts the soil, the moist soil has a sealing effect, and the negative pressure inside the sampling tube 4 facilitates the simultaneous adsorption of moisture contained in the soil when sampling the moist soil, thereby ensuring the comprehensiveness of the soil sampling, and allowing the soil layer and the moisture contained in the soil to be sampled synchronously, thereby effectively ensuring the quality of the moist soil sampling of the wetland ecology.

[0066] When sampling water, the sampling port 42 is closed by the closing cover 45. When sampling water, the positive and negative pressure control air pump 2 forms a sampling negative pressure inside the sampling tube 4 through the telescopic air pipe 22. The sampling tube 4 absorbs water through the adsorption port 43 to complete the water sampling.

[0067] refer to Fig. 9 In an optional embodiment: the sampling tube 4 is composed of a plurality of movable sections, the sampling tube 4 at least includes a tail section including a connecting head 44 and a head section including a drilling head 41, and a plurality of intermediate sections for connection are arranged between the tail section and the head section.

[0068] It should be noted that the number of intermediate sections can be determined according to actual sampling conditions, and a complete sampling tube 4 can be formed by sequentially connecting a head section, a plurality of intermediate sections and a tail section. Embodiment 1

[0069] See also Figure 1 - Fig.10 As one of the embodiments of the present invention, the sampling device is used for sampling moist soil in wetland ecology, specifically:

[0070] When sampling, the connection support 51 is controlled to be in a vertical state. When the adjustment is completed, the movable ring 6 is pushed to make the clamping block 61 clamped into the positioning groove of the connection support 51. When the clamping block 61 fixes the positioning leg 5, the positioning screw 62 is rotated to lock the clamping block 61 and the fixing frame 1. The position of the connection support 51 is fixed by the clamping block 61, and the limit block 12 is sleeved on the outside of the clamping block 61. The limit block 12 can effectively ensure the stability of the clamping block 61, avoid deformation of the clamping block 61 and cause the connection support 51, thereby ensuring the stability of the positioning leg 5.

[0071] After the adjustment of the positioning legs 5 is completed, the sampling tube 4 is installed inside the lifting drive ring 3 , and the sampling tube 4 is in an upper state of the lifting drive ring 3 .

[0072] Then, the nailing rod 53 is driven into the ground, the buffer pressure plate 52 contacts the ground, and the fixing frame 1 contacts the ground through the connecting support 51 and the buffer pressure plate 52, so that a buffer interval is formed between the fixing frame 1 and the ground, and the fixing frame 1 is controlled to be in a suspended state to avoid direct contact between the fixing frame 1 and the ground.

[0073] When the driving rod 53 is driven into the ground, the positive and negative pressure control air pump 2 can be controlled to inflate the second air bag 55, so that the second air bag 55 pushes the side protection door 54 outward. Since the driving rod 53 is driven into the ground at this time, the side protection door 54 of the driving rod 53 will squeeze the soil side wall of the outer driving hole, thereby achieving the effect of stabilizing the driving rod 53, which can prevent the driving rod 53 from falling out during sampling and prevent the driving rod 53 from sinking deep into the wetland soil, thereby effectively ensuring the sampling stability of the sampling equipment.

[0074] When the sampling device is installed, the lifting drive ring 3 is started, and the lifting drive ring 3 controls the sampling tube 4 to rotate slowly. The sampling tube 4 is pushed downward manually. When the drilling head 41 contacts the ground, the sampling tube 4 is gradually driven downward by the action of the drilling head 41, thereby completing the sampling of the moist soil.

[0075] When sampling the soil, the positive and negative pressure controlled air pump 2 forms an auxiliary negative pressure inside the sampling tube 4, and the negative pressure assists the sampling tube 4 in sampling. Since the soil is moist, when the sampling port 42 of the sampling tube 4 contacts the soil, the moist soil has a sealing effect, and the negative pressure inside the sampling tube 4 facilitates the simultaneous adsorption of moisture contained in the soil when sampling the moist soil, thereby ensuring the comprehensiveness of the soil sampling, allowing the soil layer and the moisture contained in the soil to be sampled synchronously, thereby effectively ensuring the quality of the moist soil sampling of the wetland ecology.

[0076] After the sampling action is completed, the above process is controlled in reverse. When the sampling tube 4 is off the ground, the sampling port 42 can be sealed in advance through the sealing cover 17, and then the entire equipment can be dismantled, which can effectively avoid the loss of the sampled soil and the moisture contained therein. Embodiment 2

[0077] See also Figure 4 - Fig.12 As one of the embodiments of the present invention, the sampling device is used for sampling water in a water environment of a wetland ecosystem, specifically:

[0078] When sampling, the connection support 51 is controlled to be in a horizontal state. When the adjustment is completed, the movable ring 6 is pushed to make the clamping block 61 clamped into the positioning groove of the connection support 51. When the clamping block 61 fixes the positioning leg 5, the positioning screw 62 is rotated to lock the clamping block 61 and the fixing frame 1. The position of the connection support 51 is fixed by the clamping block 61, and the limit block 12 is sleeved on the outside of the clamping block 61. The limit block 12 can effectively ensure the stability of the clamping block 61, avoid deformation of the clamping block 61 and cause the connection support 51, thereby ensuring the stability of the positioning leg 5.

[0079] After completing the adjustment of the positioning support foot 5, the sampling tube 4 is installed inside the lifting drive ring 3, the sampling tube 4 is in a lower state of the lifting drive ring 3, and the closing cover 45 is installed outside the sampling port 42, so that water can only enter the sampling tube 4 through the adsorption port 43, avoiding water loss after the sampling is completed.

[0080] Remove the sealing strip, pull out the first airbag 15 from the side connecting groove 16, and at the same time inflate the first airbag 15 by controlling the air pump 2 with positive and negative pressure, so that the first airbag 15 expands outside the fixing frame 1 to form a suspended part, which makes it easier for the sampling device to float in the water area and facilitates the sampling tube 4 to sample the water body.

[0081] Then open the side protection door 54, pull out the second airbag 55 to both sides of the nailing rod 53, and fill the second airbag 55 with gas by controlling the air pump 2 with positive and negative pressure to expand the second airbag 55 to form a stable suspension part, thereby ensuring the stability of the fixed frame 1 floating on the water body, thereby facilitating the stability of the sampling equipment in water sampling in the aquatic environment.

[0082] Through the first airbag 15 and the second airbag 55, the sampling device can float stably on the water surface. At the same time, the sampling tube 4 is located below the lifting drive ring 3. The sampling tube 4 ensures that the overall center of the device is downward, and the adsorption port 43 is located in the water body, which is convenient for water sampling.

[0083] When sampling water, the positive and negative pressure control air pump 2 forms a sampling negative pressure inside the sampling tube 4 through the telescopic air pipe 22, and the sampling tube 4 absorbs water through the absorption port 43 to complete the water sampling.

[0084] A traction rope can be tied to the sampling device to facilitate the control of the drifting out or recovery of the device and to facilitate the manipulation of water body sampling.

[0085] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sampling device for wetland ecological restoration, comprising a fixing frame (1), characterized in that: The interior of the fixing frame (1) is fixedly connected to a positive and negative pressure control air pump (2), the interior of the positive and negative pressure control air pump (2) is fixedly connected to a lifting drive ring (3), a sampling tube (4) for sampling is installed inside the lifting drive ring (3), and a positioning foot (5) for positioning is arranged outside the fixing frame (1); The positioning legs (5) are provided in at least three groups and are connected to the outside of the fixing frame (1) in a centrally symmetrical rotation manner; The positioning support leg (5) comprises a connecting support (51), the end of the connecting support (51) is fixedly connected to a buffer pressure plate (52), the outside of the buffer pressure plate (52) is fixedly connected to a nailing rod (53), and the nailing rod (53) is used to be nailed to the ground to fix the fixing frame (1); The bottom of the fixing frame (1) is provided with a mounting groove (14), the interior of the mounting groove (14) is filled with a first air bag (15), the exterior of the mounting groove (14) is provided with a detachably mounted sealing cover plate (17), the first air bag (15) is connected to the air delivery end of the positive and negative pressure control air pump (2), the side of the mounting groove (14) is provided with a side connecting groove (16) for the first air bag (15) to pass through, and the exterior of the side connecting groove (16) is bonded with a sealing strip; A lifting drive for driving the sampling tube (4) to move up and down is arranged inside the lifting drive ring (3); a sampling port (42) is provided at the bottom of the sampling tube (4); a drilling head (41) is fixedly connected to the bottom of the sampling tube (4); the drilling head (41) is arranged as a spiral blade; The side bottom of the sampling tube (4) is provided with a plurality of adsorption ports (43); the outside of the sampling port (42) is spirally connected to a closing cover plate (45) for closing the sampling port (42); and the adsorption port (43) is provided with a communicating hole; The top of the sampling tube (4) is fixedly connected to a connecting head (44), the outside of the positive and negative pressure control air pump (2) is fixedly connected to a fixed tube (21), the inside of the fixed tube (21) is movably connected to a telescopic air pipe (22), the movable end of the telescopic air pipe (22) is fixedly connected to a movable interface sleeve for connecting to the connecting head (44), and the gas delivery end of the positive and negative pressure control air pump (2) is connected to the inside of the sampling tube (4) via the telescopic air pipe (22) and the connecting head (44).

2. A sampling device for wetland ecological restoration according to claim 1, characterized in that: The fixing frame (1) has an annular groove (11) formed inside, a movable ring (6) is slidably connected inside the annular groove (11), a clamping block (61) is fixedly connected outside the movable ring (6), a top of the fixing frame (1) is fixedly connected to a limit block (12), the clamping block (61) is slidably connected inside the limit block (12), a positioning groove is formed on the connecting support (51), the clamping block (61) is used to fix the positioning leg (5) through the positioning groove, and the positioning leg (5) is provided with a vertical state and a horizontal state.

3. A sampling device for wetland ecological restoration according to claim 2, characterized in that: A fixed pressure plate (13) is detachably mounted on the outside of the fixing frame (1), and the fixed pressure plate (13) is used to be pressed into the notch position of the annular groove (11). The external thread of the clamping block (61) is connected with a positioning screw (62), and the positioning screw (62) passes through the clamping block (61). The positioning screw (62) is used to abut against the top surface of the fixing frame (1) to fix the positioning screw (62).

4. A sampling device for wetland ecological restoration according to claim 1, characterized in that: A second airbag (55) is arranged inside the nailing rod (53), and communication ports for releasing the second airbag (55) are provided on both sides of the nailing rod (53). Side protective doors (54) are elastically hinged on the outside of the communication ports on both sides of the nailing rod (53), and the side protective doors (54) always tend to close the communication ports of the nailing rod (53) under elastic conditions. A support foot connecting air pipe (23) is fixedly connected to the outside of the positive and negative pressure control air pump (2), and the support foot connecting air pipe (23) is connected to the second airbag (55). The support foot connecting air pipe (23) is connected to the air delivery end of the positive and negative pressure control air pump (2), and the positive and negative pressure control air pump (2) is used to pump air into the second airbag (55) through the support foot connecting air pipe (23).

5. A sampling device for wetland ecological restoration according to claim 1, characterized in that: The sampling tube (4) is composed of a plurality of movable sections, the sampling tube (4) comprising at least a tail section containing a connecting head (44) and a head section containing a drilling head (41), and a plurality of intermediate sections for connection are arranged between the tail section and the head section.

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