CN117109993A - Deep soil greenhouse gas sampling device and sampling method - Google Patents

Deep soil greenhouse gas sampling device and sampling method Download PDF

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Publication number
CN117109993A
CN117109993A CN202311375137.0A CN202311375137A CN117109993A CN 117109993 A CN117109993 A CN 117109993A CN 202311375137 A CN202311375137 A CN 202311375137A CN 117109993 A CN117109993 A CN 117109993A
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China
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sampling
group
groups
wall
box
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CN202311375137.0A
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CN117109993B (en
Inventor
彭琴
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Institute of Geographic Sciences and Natural Resources of CAS
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Institute of Geographic Sciences and Natural Resources of CAS
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/2294Sampling soil gases or the like
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/24Suction devices
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/24Suction devices
    • G01N2001/248Evacuated containers

Abstract

The invention relates to the field of soil greenhouse gas collection, in particular to a deep soil greenhouse gas sampling device and a deep soil greenhouse gas sampling method. The device comprises a sampling box, wherein a lifting mechanism is arranged on the inner wall of the bottom of the sampling box; the output end of the lifting mechanism is in transmission connection with a connecting mechanism; one end of the connecting mechanism, which is far away from the lifting mechanism, is provided with a drilling sampling mechanism; and a transfer mechanism is arranged in the sampling box. According to the invention, the lifting mechanism is controlled to drive the connecting mechanism and the drilling sampling mechanism to move downwards and penetrate through the sampling hole, the drilling sampling mechanism is started to drill into the soil, and the soil entering a set depth is stopped and the greenhouse gas collection work is rapidly carried out.

Description

Deep soil greenhouse gas sampling device and sampling method
Technical Field
The invention belongs to the technical field of soil greenhouse gas collection, and particularly relates to a deep soil greenhouse gas sampling device and a sampling method.
Background
Greenhouse gases refer to long-wave radiation which can be absorbed by the ground and reflected by the ground in the atmosphere, and some gases which re-emit the radiation are mostly carbon dioxide, wherein the carbon dioxide in the soil is generated by respiration of microorganisms, decomposition of soil organic matters, respiration of plant roots and rhizosphere organisms, respiration of soil animals and chemical oxidation of carbon-containing substances, and research on the content of the carbon dioxide in the soil is of great significance to ecological environment protection.
Through searching, in the prior art, chinese patent bulletin number: CN116678687a, publication date: 2023-09-01, a soil multi-depth greenhouse gas collection device, comprising a tube shell, wherein a plurality of collection cavities are vertically distributed in the tube shell, and a plurality of net plates penetrating the collection cavities are arranged on the surface of the tube shell; the blocking assemblies are arranged in each collecting cavity and are in sliding fit with the inner wall of the collecting cavity; the adjusting component is slidably penetrated through the collecting cavity; the device comprises a pressing handle, wherein each collecting cavity is internally provided with a pressing handle, the pressing handles are connected with an adjusting component, the adjusting component drives the pressing handles to move up and down, a blocking component is driven to move up or down to block or expose a screen plate, the collecting cavities vertically distributed in a pipe shell are aligned with different depths of soil, the lining shell is controlled to descend or ascend, the screen plate is opened or blocked, and the device is used for collecting greenhouse gases with different depths of soil for each collecting cavity and is convenient to operate.
However, the acquisition device still has the following drawbacks:
in the prior art, when the greenhouse gas sampling device in multi-depth soil is used, a deep hole is usually drilled on the soil, then a collection mechanism stretches into the deep hole and collects greenhouse gases with different depths, and the method lacks sampling efficiency when collecting the greenhouse gases.
Disclosure of Invention
In order to solve the problems, the invention provides a deep soil greenhouse gas sampling device, which comprises a sampling box, wherein a fixing mechanism is arranged on the outer wall of the bottom of the sampling box; a plurality of groups of storage holes are formed in the outer wall of one side of the sampling box at equal intervals along the horizontal direction; a plurality of groups of storage boxes are arranged on the inner wall of one side of the sampling box, which is close to the storage hole, at equal intervals along the horizontal direction; the inner wall of one side of each storage box close to the storage hole is of an open structure and is communicated with a corresponding group of storage holes; a group of electromagnetic air valves are arranged on one side wall of each group of storage boxes far away from the storage holes; each group of the storage boxes is internally and movably penetrated with a group of vacuum air storage tanks; each group of the vacuum air storage tanks are communicated with a corresponding group of electromagnetic air valves; the inner wall of the bottom of the sampling box is provided with a lifting mechanism; the output end of the lifting mechanism is in transmission connection with a connecting mechanism; one end of the connecting mechanism, which is far away from the lifting mechanism, is provided with a drilling sampling mechanism; a transfer mechanism is arranged in the sampling box; the transfer mechanism is positioned between the drilling sampling mechanism and the electromagnetic air valves; one end of the transfer mechanism is communicated with the drilling sampling mechanism, and the other end of the transfer mechanism is movably communicated with any group of electromagnetic air valves; and a sampling hole is formed in the inner wall of the bottom of the sampling box.
Further, a box cover is arranged at the top of the sampling box; a handle is arranged in the center of the top of the box cover; a cleaning box is arranged on the inner wall of the bottom of the sampling box; the inner wall of the bottom of the cleaning box is of an open structure and is communicated with the sampling hole; the drilling sampling mechanism is movably penetrated in the cleaning box and the sampling hole; two groups of first electric push rods are symmetrically arranged on the inner walls of two sides of the sampling hole; the output end of each group of the first electric push rod is in transmission connection with a group of scrapers; the two groups of scrapers are movably abutted against the outer wall of the drilling sampling mechanism.
Further, the lifting mechanism comprises a support column; a first chute is formed in one side wall of the support column; a first sliding block is connected in the first sliding groove in a sliding manner along the vertical direction; the first sliding block is in transmission connection with the connecting mechanism; a first screw rod is arranged in the first chute; the two ends of the first screw rod are respectively and rotatably connected to the inner walls at the top and the bottom of the first chute; the first screw rod is in threaded connection with the first sliding block; the top of the support column is provided with a second motor; the output end of the second motor is in transmission connection with the first screw rod.
Further, the fixing mechanism comprises a fixing ring and a lifting ring; the fixed ring is sleeved on the outer wall of the sampling box; the lifting ring is movably sleeved on the outer wall of the sampling box and is positioned right above the fixing ring; a plurality of groups of second electric push rods are arranged at the top edge of the fixed ring; the output end of each group of second electric push rods is in transmission connection with the lifting ring; a group of first motors are respectively arranged at the top corners of the lifting ring; the output end of each group of first motors extends to the lower part of the lifting ring, and is in transmission connection with a group of fixing screws; the bottom of each group of the fixing screws movably penetrates through the fixing rings.
Further, the connecting mechanism comprises a housing; a second chute is formed in one side wall of the shell; two groups of clamping plates are connected in the second sliding groove in a sliding manner; two groups of limiting blocks are symmetrically arranged on two opposite side walls of the two groups of clamping plates; the two groups of clamping plates and the limiting blocks are movably penetrated through the outer walls of the two sides of the drilling sampling mechanism; an adjusting cavity is arranged in the shell; the adjusting cavity is communicated with the second sliding groove.
Further, two groups of second screw rods are arranged in the adjusting cavity; one ends of the two groups of second screw rods are fixedly connected, and the other ends of the two groups of second screw rods are respectively and rotatably connected to the inner walls at two sides of the adjusting cavity; the thread directions of the two groups of second screw rods are opposite, and the central axes of the two groups of second screw rods are on the same straight line; two groups of second sliding blocks are connected to the inner wall of one side of the adjusting cavity, which is far away from the second sliding groove, in a sliding manner; the two groups of second sliding blocks are respectively in threaded connection with one group of second screw rods; the two groups of second sliding blocks are respectively in transmission connection with one group of clamping plates; a third motor is arranged on one side wall of the shell; the output end of the third motor is in transmission connection with one group of second screw rods.
Further, the borehole sampling mechanism comprises a support plate; two groups of first limit grooves are symmetrically formed at the edges of the two side walls of the supporting plate; a group of second limiting grooves are formed in the inner wall of one side, close to the supporting plate, of each group of first limiting grooves; each group of clamping plates movably penetrate through a corresponding group of first limiting grooves; each group of limiting blocks movably penetrate through a corresponding group of second limiting grooves; a first air guide hole is formed in one side wall of the supporting plate; a movable hole is formed in the center of the top of the supporting plate; a fourth motor is arranged at the top of the supporting plate; the output end of the fourth motor extends into the movable hole and is connected with a sampling tube in a transmission way; the bottom transmission of sampling pipe extends to the below of backup pad, and the transmission is connected with the drill bit.
Further, a sealing ring is sleeved on the inner wall of the movable hole; the inner wall of the sealing ring is movably attached to the outer wall of the sampling tube; a second air guide hole is formed in the inner wall of the sealing ring; the second air vent is communicated with the first air vent; a plurality of groups of air outlet holes are distributed on the inner wall of the sampling tube in an annular array; the second air guide holes are movably communicated with any group of air outlet holes; an air inlet hole is formed in the inner wall of the bottom side of the sampling tube; a third electric push rod is arranged on the inner wall of the sampling tube; the output end of the third electric push rod is in transmission connection with a sealing block; the sealing block movably seals the air inlet.
Further, the transfer mechanism comprises an electric sliding table; two ends of the electric sliding table are connected to the inner walls of two sides of the sampling box; the output end of the electric sliding table is in transmission connection with a first mounting plate; a second mounting plate is arranged at the top of the first mounting plate; a first telescopic pipe is arranged on one side wall of the second mounting plate; one end of the first telescopic pipe, which is far away from the second mounting plate, is movably penetrated with the second telescopic pipe; one end of the second telescopic pipe, which is far away from the first telescopic pipe, is movably communicated with any group of electromagnetic air valves; a fourth electric push rod is arranged on one side wall, close to the first telescopic pipe, of the second mounting plate; the output end of the fourth electric push rod is in transmission connection with the second telescopic pipe; an automatic pipe coiling device is arranged at the top of the first mounting plate; one end of the automatic pipe coiling device is communicated with the first air guide hole, and the other end of the automatic pipe coiling device is communicated with the first telescopic pipe.
A sampling method of a deep soil greenhouse gas sampling device, the sampling method comprising:
the control fixing mechanism is used for fixing the sampling box on the ground;
controlling the lifting mechanism to drive the drilling sampling mechanism to descend and simultaneously starting the drilling sampling mechanism;
controlling the drilling sampling mechanism to enter the soil with the set depth and stopping descending;
the greenhouse gas sequentially passes through the drilling sampling mechanism, the transfer mechanism and the corresponding electromagnetic air valve to enter the corresponding vacuum air outlet tank;
the method comprises the steps of circularly operating and collecting a plurality of groups of greenhouse gases in soil with different depths;
controlling the lifting mechanism to drive the drilling sampling mechanism to be recycled into the sampling box;
and (5) completing the sampling work.
The beneficial effects of the invention are as follows:
1. the lifting mechanism is controlled to drive the connecting mechanism and the drilling sampling mechanism to move downwards and penetrate through the sampling hole, the drilling sampling mechanism is started to drill into soil, and the soil entering a set depth is stopped and the greenhouse gas collection work is rapidly carried out, in the collection process, the transfer mechanism is communicated with the corresponding electromagnetic air valve, the corresponding electromagnetic air valve is opened, the vacuum negative pressure in the vacuum air storage tank is utilized to automatically extract the greenhouse gas in the soil, so that the drilling and the sampling work can be carried out simultaneously, and the sampling efficiency of the sampling device is improved.
2. After soil greenhouse gas sampling work of different degree of depth is accomplished, control elevating system drives drilling sampling mechanism and rises, at drilling sampling mechanism's in-process that rises, two sets of first electric putter drive two sets of scrapers and contradict clean attached soil on drilling sampling mechanism's outer wall, have avoided needing manual cleanness of staff, have improved sampling device's clean convenience.
3. When the drilling sampling mechanism breaks down and needs to be maintained, the third motor is controlled to drive the two groups of second screw rods to rotate, under the threaded connection relation of the two groups of second screw rods and the two groups of second sliding blocks, the two groups of second sliding blocks drive the two groups of clamping plates and the two groups of limiting blocks to move to opposite sides and separate from the drilling sampling mechanism, and then the drilling sampling mechanism can be directly taken down, so that the process is simple and rapid, and the maintenance convenience of the sampling device is improved.
4. The lifting mechanism is controlled to drive the connecting mechanism and the drilling sampling mechanism to move downwards and penetrate through the sampling hole, the drilling sampling mechanism is started to drill into the soil, and the soil with a set depth is stopped every time and the greenhouse gas is rapidly collected, so that the sampling device can sequentially collect the greenhouse gas in the soil with different depths from top to bottom, the problem that the detection accuracy of a sample is influenced by sedimentation of the greenhouse gas in an upper space to the bottom of the hole during one-time hole forming is avoided, and the sampling effect of the sampling device is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic diagram of a sampling device according to an embodiment of the present invention;
FIG. 2 shows an exploded schematic view of a sampling device according to an embodiment of the present invention;
FIG. 3 shows a schematic top view of a sample tank according to an embodiment of the invention;
FIG. 4 shows a schematic left-hand cross-sectional view of a sampling tank according to an embodiment of the present invention;
FIG. 5 shows a schematic structural view of a fixing mechanism according to an embodiment of the present invention;
FIG. 6 shows an enlarged schematic view at A of FIG. 2, in accordance with an embodiment of the invention;
FIG. 7 shows a schematic structural view of a connection mechanism according to an embodiment of the present invention;
FIG. 8 illustrates a right side cross-sectional view of a connection mechanism according to an embodiment of the present invention;
FIG. 9 shows a schematic structural view of a borehole sampling mechanism in accordance with an embodiment of the present invention;
FIG. 10 illustrates a schematic left side cross-sectional view of a borehole sampling mechanism in accordance with an embodiment of the invention;
FIG. 11 shows an enlarged schematic view at B of FIG. 10, according to an embodiment of the invention;
fig. 12 shows an enlarged schematic view at C of fig. 10 according to an embodiment of the invention.
In the figure: 1. a sampling box; 2. a fixing mechanism; 3. a case cover; 4. a handle; 5. a storage hole; 6. a lifting mechanism; 7. a connecting mechanism; 8. drilling and sampling mechanism; 9. a transfer mechanism; 10. a storage box; 11. an electromagnetic air valve; 12. a cleaning box; 13. a sampling hole; 14. a first electric push rod; 15. a scraper; 16. a vacuum air storage tank; 201. a fixing ring; 202. a lifting ring; 203. a second electric push rod; 204. a first motor; 205. a fixed screw; 601. a support column; 602. a first chute; 603. a first slider; 604. a first screw rod; 605. a second motor; 701. a housing; 702. a second chute; 703. a clamping plate; 704. a limiting block; 705. a third motor; 706. a regulating chamber; 707. a second screw rod; 708. a second slider; 801. a support plate; 802. a first limit groove; 803. the second limit groove; 804. a fourth motor; 805. a first air vent; 806. a sampling tube; 807. a drill bit; 808. a movable hole; 809. a seal ring; 810. a second air guide hole; 811. an air outlet hole; 812. an air inlet hole; 813. a third electric push rod; 814. a sealing block; 901. an electric sliding table; 902. a first mounting plate; 903. an automatic pipe winder; 904. a second mounting plate; 905. a first telescopic tube; 906. a second telescopic tube; 907. fourth electric putter.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a deep soil greenhouse gas sampling device, which comprises a sampling box 1. As shown in fig. 1, 2, 3 and 4, a fixing mechanism 2 is provided on the outer wall of the bottom of the sampling box 1; the top of the sampling box 1 is provided with a box cover 3; a lifting handle 4 is arranged at the center of the top of the box cover 3; a plurality of groups of storage holes 5 are formed in the outer wall of one side of the sampling box 1 at equal intervals along the horizontal direction; a plurality of groups of storage boxes 10 are arranged on the inner wall of one side of the sampling box 1 close to the storage hole 5 at equal intervals along the horizontal direction; the inner wall of one side of each storage box 10 close to the storage hole 5 is of an open structure and is communicated with the corresponding storage hole 5; a group of electromagnetic air valves 11 are arranged on one side wall of each group of storage boxes 10 far away from the storage holes 5; a group of vacuum air storage tanks 16 are movably penetrated in each group of the storage boxes 10; each group of the vacuum air storage tanks 16 is communicated with a corresponding group of electromagnetic air valves 11; the lifting mechanism 6 is arranged on the inner wall of the bottom of the sampling box 1; the output end of the lifting mechanism 6 is in transmission connection with a connecting mechanism 7; a drilling sampling mechanism 8 is arranged at one end of the connecting mechanism 7 far away from the lifting mechanism 6; a transfer mechanism 9 is arranged in the sampling box 1; the transfer mechanism 9 is positioned between the drilling sampling mechanism 8 and a plurality of groups of electromagnetic air valves 11; one end of the transfer mechanism 9 is communicated with the drilling sampling mechanism 8, and the other end of the transfer mechanism is movably communicated with any group of electromagnetic air valves 11; a sampling hole 13 is formed in the inner wall of the bottom of the sampling box 1; a cleaning box 12 is arranged on the inner wall of the bottom of the sampling box 1; the inner wall of the bottom of the cleaning box 12 is of an open structure and is communicated with the sampling hole 13; the drilling sampling mechanism 8 movably penetrates through the cleaning box 12 and the sampling hole 13; two groups of first electric push rods 14 are symmetrically arranged on the inner walls of the two sides of the sampling hole 13; the output end of each group of the first electric push rods 14 is in transmission connection with a group of scrapers 15; both groups of scrapers 15 are movably abutted against the outer wall of the drilling and sampling mechanism 8.
The lifting mechanism 6 comprises a support column 601; a first chute 602 is formed on one side wall of the support column 601; a first sliding block 603 is slidably connected in the first sliding groove 602 along the vertical direction; the first sliding block 603 is in transmission connection with the connecting mechanism 7; a first screw rod 604 is arranged in the first chute 602; two ends of the first screw rod 604 are respectively and rotatably connected to the top and bottom inner walls of the first chute 602; the first screw rod 604 is in threaded connection with the first sliding block 603; a second motor 605 is arranged at the top of the support column 601; the output end of the second motor 605 is in transmission connection with the first screw rod 604.
When the sampling device works, the sampling box 1 is fixed on the ground by the aid of the fixing mechanism 2, the second motor 605 is started to drive the first screw rod 604 to rotate, under the threaded connection relation between the first screw rod 604 and the first sliding block 603, the first sliding block 603 drives the drilling sampling mechanism 8 to move downwards and penetrate through the cleaning box 12 and the sampling hole 13, meanwhile, the drilling sampling mechanism 8 is started to drill into soil, and each time the soil with a set depth is stopped and the greenhouse gas collection work is rapidly carried out, in the collection process, the transfer mechanism 9 is communicated with the corresponding electromagnetic air valve 11, the corresponding electromagnetic air valve 11 is opened, the greenhouse gas in the soil is automatically extracted by utilizing the vacuum negative pressure in the vacuum air storage tank 16, so that the drilling and the sampling work can be carried out simultaneously, and the sampling efficiency of the sampling device is improved. After soil greenhouse gas sampling work of different degree of depth is accomplished, control elevating system 6 drives drilling sampling mechanism 8 and rises, and at the in-process that rises of drilling sampling mechanism 8, two sets of first electric putter 14 drive two sets of scrapers 15 conflict clean the soil of adhesion on the outer wall of drilling sampling mechanism 8, have avoided needing manual cleanness of staff, have improved sampling device's clean convenience.
Illustratively, as shown in fig. 5, the fixing mechanism 2 includes a fixing ring 201 and a lifting ring 202; the fixed ring 201 is sleeved on the outer wall of the sampling box 1; the lifting ring 202 is movably sleeved on the outer wall of the sampling box 1 and is positioned right above the fixed ring 201; a plurality of groups of second electric push rods 203 are arranged at the top edge of the fixed ring 201; the output end of each group of second electric push rods 203 is in transmission connection with the lifting ring 202; a group of first motors 204 are respectively arranged at the top corners of the lifting ring 202; the output end of each group of the first motors 204 extends to the lower part of the lifting ring 202, and is in transmission connection with a group of fixing screws 205; the bottom of each set of the fixing screws 205 is movably penetrated in the fixing ring 201.
Before the sampling device performs sampling work, firstly, the sampling box 1 is placed on the ground and pressed, then, the plurality of groups of second electric push rods 203 are controlled to drive the lifting ring 202 to descend, the plurality of groups of first motors 204 are started simultaneously in the descending process of the lifting ring 202 to drive the plurality of groups of fixing screws 205 to rotate, the plurality of groups of fixing screws 205 are drilled into the soil in the rotating process, so that the sampling device can be always fixed when drilling and sampling work is performed, and the stability of the sampling device is improved.
As shown in fig. 7 and 8, the connection mechanism 7 includes a housing 701; a second chute 702 is formed on one side wall of the housing 701; two groups of clamping plates 703 are slidably connected to the second sliding groove 702; two groups of limiting blocks 704 are symmetrically arranged on two opposite side walls of the two groups of clamping plates 703; the two groups of clamping plates 703 and limiting blocks 704 are movably penetrated through the outer walls of the two sides of the drilling and sampling mechanism 8; an adjusting cavity 706 is arranged in the shell 701; the adjusting cavity 706 is communicated with the second chute 702; two groups of second screw rods 707 are arranged in the adjusting cavity 706; one ends of the two groups of second screw rods 707 are fixedly connected, and the other ends of the two groups of second screw rods are respectively and rotatably connected to inner walls of two sides of the adjusting cavity 706; the thread directions of the two groups of second screw rods 707 are opposite, and the central axes are on the same straight line; two groups of second sliding blocks 708 are slidably connected to the inner wall of one side of the adjusting cavity 706 away from the second sliding groove 702; two sets of second sliding blocks 708 are respectively in threaded connection with one set of second screw rods 707; the two sets of second sliders 708 are respectively in transmission connection with one set of clamping plates 703; a third motor 705 is disposed on a side wall of the housing 701; the output end of the third motor 705 is in transmission connection with one of the sets of second screw rods 707.
When the drilling sampling mechanism 8 breaks down and needs to be maintained, the third motor 705 is controlled to drive the two groups of second screw rods 707 to rotate, under the threaded connection relation of the two groups of second screw rods 707 and the two groups of second sliding blocks 708, the two groups of second sliding blocks 708 drive the two groups of clamping plates 703 and the two groups of limiting blocks 704 to move to the opposite sides and separate from the drilling sampling mechanism 8, and then the drilling sampling mechanism 8 can be directly taken down, so that the process is simple and quick, and the maintenance convenience of the sampling device is improved.
As shown in fig. 9, 10, 11 and 12, the borehole sampling mechanism 8 includes a support plate 801; two groups of first limit grooves 802 are symmetrically formed at the edges of the two side walls of the support plate 801; a set of second limiting grooves 803 are formed in the inner wall of one side, close to the supporting plate 801, of each set of first limiting grooves 802; each group of clamping plates 703 movably penetrates through a corresponding group of first limiting grooves 802; each group of limiting blocks 704 movably penetrate through a corresponding group of second limiting grooves 803; a first air guide hole 805 is formed in one side wall of the support plate 801; a movable hole 808 is formed in the center of the top of the supporting plate 801; a fourth motor 804 is arranged at the top of the supporting plate 801; the output end of the fourth motor 804 extends into the movable hole 808, and is in transmission connection with a sampling tube 806; the bottom of the sampling tube 806 extends below the support plate 801 in a driving manner and is connected with a drill bit 807; a sealing ring 809 is sleeved on the inner wall of the movable hole 808; the inner wall of the sealing ring 809 is movably attached to the outer wall of the sampling tube 806; a second air guide hole 810 is formed in the inner wall of the sealing ring 809; the second air hole 810 is communicated with the first air hole 805; a plurality of groups of air outlet holes 811 are distributed on the inner wall of the sampling tube 806 in an annular array; the second air guide holes 810 are movably communicated with any group of air outlet holes 811; an air inlet 812 is formed in the inner wall of the bottom side of the sampling tube 806; a third electric push rod 813 is arranged on the inner wall of the sampling tube 806; the output end of the third electric push rod 813 is in transmission connection with a sealing block 814; the sealing block 814 movably closes the air inlet hole 812.
When the drilling and sampling mechanism 8 works, the lifting mechanism 6 drives the drilling and sampling mechanism 8 to descend through the connecting mechanism 7, meanwhile, the fourth motor 804 drives the drill bit 807 to rotate through the sampling pipe 806 to stretch into soil, after the sampling pipe 806 stretches into the soil for a certain distance, the lifting mechanism 6 and the fourth motor 804 stop working simultaneously, then the third electric push rod 813 drives the sealing block 814 to shrink into the sampling pipe 806, so that greenhouse gas in the deep soil can enter the sampling pipe 806 through the air inlet holes 812, and as the diameter of the second air guide holes 810 is larger than the distance between two adjacent groups of air guide holes 811, the greenhouse gas can sequentially pass through the corresponding air outlet holes 811, the second air guide holes 810 and the first air guide holes 805 and then be transferred into the corresponding vacuum air storage tank 16 by the transfer mechanism 9.
Illustratively, as shown in fig. 6, the transfer mechanism 9 includes an electric slide 901; two ends of the electric sliding table 901 are connected to the inner walls of two sides of the sampling box 1; the output end of the electric sliding table 901 is in transmission connection with a first mounting plate 902; a second mounting plate 904 is arranged on top of the first mounting plate 902; a first telescopic tube 905 is arranged on one side wall of the second mounting plate 904; a second telescopic tube 906 movably penetrates through one end of the first telescopic tube 905, which is far away from the second mounting plate 904; one end of the second telescopic tube 906, which is far away from the first telescopic tube 905, is movably communicated with any group of electromagnetic air valves 11; a fourth electric push rod 907 is arranged on one side wall of the second mounting plate 904, which is close to the first telescopic pipe 905; the output end of the fourth electric push rod 907 is in transmission connection with the second telescopic pipe 906; an automatic pipe winder 903 is arranged on the top of the first mounting plate 902; one end of the automatic pipe winder 903 is in communication with a first air vent 805, and the other end is in communication with a first telescoping pipe 905.
When sampling is performed, each time the lifting mechanism 6 and the fourth motor 804 stop working to perform greenhouse gas collection, the electric sliding table 901 drives the first telescopic pipe 905 to move through the first mounting plate 902 and the second mounting plate 904, so that the first telescopic pipe 905 coincides with the central axis of the corresponding electromagnetic air valve 11, and then the fourth electric push rod 907 is controlled to drive the second telescopic pipe 906 to extend out to perform communication work with the corresponding electromagnetic air valve 11.
The working principle of the deep soil greenhouse gas sampling device provided by the invention is as follows: before the sampling device performs sampling work, firstly, the sampling box 1 is placed on the ground and pressed, then, the plurality of groups of second electric push rods 203 are controlled to drive the lifting ring 202 to descend, the plurality of groups of first motors 204 are started simultaneously in the descending process of the lifting ring 202 to drive the plurality of groups of fixing screws 205 to rotate, the plurality of groups of fixing screws 205 drill into the soil in the rotating process, and the sampling device can be always fixed when performing drilling and sampling work. When the sampling device works, the second motor 605 is started to drive the first screw rod 604 to rotate, under the threaded connection relation between the first screw rod 604 and the first sliding block 603, the first sliding block 603 drives the drilling sampling mechanism 8 to descend through the connecting mechanism 7, meanwhile, the fourth motor 804 drives the drill bit 807 to rotate through the sampling plate 806 to stretch into soil, after the sampling plate 806 stretches into the soil for a certain distance, the lifting mechanism 6 and the fourth motor 804 simultaneously stop working, then the third electric push rod 813 drives the sealing block 814 to shrink into the sampling plate 806, greenhouse gas in the soil at the depth can enter the sampling plate 806 through the air inlet 812, and as the diameter of the second air guide hole 810 is larger than the distance between two adjacent groups of air guide holes 811, the greenhouse gas can sequentially pass through the corresponding air guide holes 811, the second air guide holes 810 and the first air guide holes 805, meanwhile, the electric slide table 901 drives the first telescopic pipe 905 to move through the first mounting plate 902 and the second mounting plate 904, the first telescopic pipe 905 coincides with the central axis of the corresponding electromagnetic air valve 11, then the fourth electric push rod is controlled to drive the second telescopic pipe to stretch out of the corresponding electromagnetic valve 11 to shrink into the interior of the sampling plate 806, the vacuum air storage valve 16 can be circulated in the vacuum air storage tank 16 under the condition that the vacuum condition is not communicated with the corresponding electromagnetic valve 11, and the vacuum condition is not to be circulated, and then the vacuum condition is obtained, and the vacuum condition is not can be circulated in the vacuum air storage valve 16. After soil greenhouse gas sampling work of different depths is accomplished, control elevating system 6 drives drilling sampling mechanism 8 and rises, and in the ascending process of drilling sampling mechanism 8, two sets of first electric putter 14 drive two sets of scrapers 15 conflict clean the soil of adhesion on the outer wall of sampling pipe 806, have avoided needing manual cleanness of staff. When the drilling sampling mechanism 8 breaks down and needs to be maintained, the third motor 705 is controlled to drive the two groups of second screw rods 707 to rotate, and under the threaded connection relationship of the two groups of second screw rods 707 and the two groups of second sliding blocks 708, the two groups of second sliding blocks 708 drive the two groups of clamping plates 703 and the two groups of limiting blocks 704 to move to the opposite sides and separate from the drilling sampling mechanism 8, and then the drilling sampling mechanism 8 can be directly taken down, so that the process is simple and quick.
When the drilling sampling mechanism 8 breaks down and needs to be maintained, the third motor 705 is controlled to drive the two groups of second screw rods 707 to rotate, under the threaded connection relation of the two groups of second screw rods 707 and the two groups of second sliding blocks 708, the two groups of second sliding blocks 708 drive the two groups of clamping plates 703 and the two groups of limiting blocks 704 to move to the opposite sides and separate from the drilling sampling mechanism 8, and then the drilling sampling mechanism 8 can be directly taken down, so that the process is simple and quick, and the maintenance convenience of the sampling device is improved.
After soil greenhouse gas sampling work of different degree of depth is accomplished, control elevating system 6 drives drilling sampling mechanism 8 and rises, and at the in-process that rises of drilling sampling mechanism 8, two sets of first electric putter 14 drive two sets of scrapers 15 conflict clean the soil of adhesion on the outer wall of drilling sampling mechanism 8, have avoided needing manual cleanness of staff, have improved sampling device's clean convenience.
The lifting mechanism 6 is controlled to drive the connecting mechanism 7 and the drilling and sampling mechanism 8 to move downwards and penetrate through the sampling hole 13, the drilling and sampling mechanism 8 is started to drill into soil, and the soil with a set depth is stopped and the greenhouse gas is rapidly collected every time, in the collecting process, the transfer mechanism 9 is communicated with the corresponding electromagnetic air valve 11, the corresponding electromagnetic air valve 11 is opened, the vacuum negative pressure in the vacuum air storage tank 16 is utilized to automatically extract the greenhouse gas in the soil, so that the drilling and the sampling work can be simultaneously carried out, and the sampling efficiency of the sampling device is improved.
On the basis of the deep soil greenhouse gas sampling device, the embodiment of the invention also provides a sampling method for the deep soil greenhouse gas sampling device, and the sampling method comprises the following steps:
the control fixing mechanism is used for fixing the sampling box on the ground;
controlling the lifting mechanism to drive the drilling sampling mechanism to descend and simultaneously starting the drilling sampling mechanism;
controlling the drilling sampling mechanism to enter the soil with the set depth and stopping descending;
the greenhouse gas sequentially passes through the drilling sampling mechanism, the transfer mechanism and the corresponding electromagnetic air valve to enter the corresponding vacuum air outlet tank;
the method comprises the steps of circularly operating and collecting a plurality of groups of greenhouse gases in soil with different depths;
controlling the lifting mechanism to drive the drilling sampling mechanism to be recycled into the sampling box;
and (5) completing the sampling work.
Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a deep soil greenhouse gas sampling device, includes sampling box (1), its characterized in that: a fixing mechanism (2) is arranged on the outer wall of the bottom of the sampling box (1); a plurality of groups of storage holes (5) are formed in the outer wall of one side of the sampling box (1) at equal intervals along the horizontal direction; a plurality of groups of storage boxes (10) are arranged on the inner wall of one side of the sampling box (1) close to the storage hole (5) at equal intervals along the horizontal direction; the inner wall of one side of each storage box (10) close to the storage hole (5) is of an open structure and is communicated with the corresponding storage hole (5); a group of electromagnetic air valves (11) are arranged on one side wall of each group of storage boxes (10) far away from the storage holes (5); a group of vacuum air storage tanks (16) are movably penetrated in each group of storage boxes (10); each group of vacuum air storage tanks (16) is communicated with a corresponding group of electromagnetic air valves (11); a lifting mechanism (6) is arranged on the inner wall of the bottom of the sampling box (1); the output end of the lifting mechanism (6) is in transmission connection with a connecting mechanism (7); one end of the connecting mechanism (7) far away from the lifting mechanism (6) is provided with a drilling sampling mechanism (8); a transfer mechanism (9) is arranged in the sampling box (1); the transfer mechanism (9) is positioned between the drilling sampling mechanism (8) and the electromagnetic air valves (11); one end of the transfer mechanism (9) is communicated with the drilling sampling mechanism (8), and the other end of the transfer mechanism is movably communicated with any group of electromagnetic air valves (11); sampling holes (13) are formed in the inner wall of the bottom of the sampling box (1).
2. The deep soil greenhouse gas sampling apparatus of claim 1, wherein: the top of the sampling box (1) is provided with a box cover (3); a lifting handle (4) is arranged at the center of the top of the box cover (3); a cleaning box (12) is arranged on the inner wall of the bottom of the sampling box (1); the inner wall of the bottom of the cleaning box (12) is of an open structure and is communicated with the sampling hole (13); the drilling sampling mechanism (8) is movably penetrated into the cleaning box (12) and the sampling hole (13); two groups of first electric push rods (14) are symmetrically arranged on the inner walls of two sides of the sampling hole (13); the output end of each group of the first electric push rods (14) is in transmission connection with a group of scrapers (15); the two groups of scrapers (15) are movably abutted against the outer wall of the drilling sampling mechanism (8).
3. The deep soil greenhouse gas sampling apparatus of claim 2, wherein: the lifting mechanism (6) comprises a support column (601); a first chute (602) is formed in one side wall of the support column (601); a first sliding block (603) is connected in the first sliding groove (602) in a sliding manner along the vertical direction; the first sliding block (603) is in transmission connection with the connecting mechanism (7); a first screw rod (604) is arranged in the first chute (602); two ends of the first screw rod (604) are respectively connected to the inner walls of the top and the bottom of the first chute (602) in a rotating way; the first screw rod (604) is in threaded connection with the first sliding block (603); a second motor (605) is arranged at the top of the supporting column (601); the output end of the second motor (605) is in transmission connection with the first screw rod (604).
4. The deep soil greenhouse gas sampling apparatus of claim 2, wherein: the fixing mechanism (2) comprises a fixing ring (201) and a lifting ring (202); the fixed ring (201) is sleeved on the outer wall of the sampling box (1); the lifting ring (202) is movably sleeved on the outer wall of the sampling box (1) and is positioned right above the fixed ring (201); a plurality of groups of second electric push rods (203) are arranged at the top edge of the fixed ring (201); the output end of each group of second electric push rods (203) is in transmission connection with the lifting ring (202); a group of first motors (204) are respectively arranged at the top corners of the lifting ring (202); the output end of each group of the first motors (204) extends to the lower part of the lifting ring (202), and is in transmission connection with a group of fixing screws (205); the bottom of each group of the fixed screws (205) movably penetrates through the fixed ring (201).
5. The deep soil greenhouse gas sampling apparatus of claim 2, wherein: the connecting mechanism (7) comprises a housing (701); a second chute (702) is formed in one side wall of the shell (701); two groups of clamping plates (703) are connected in a sliding way in the second sliding groove (702); two groups of limiting blocks (704) are symmetrically arranged on two opposite side walls of the two groups of clamping plates (703); the two groups of clamping plates (703) and limiting blocks (704) are movably penetrated through the outer walls of the two sides of the drilling and sampling mechanism (8); an adjusting cavity (706) is arranged in the shell (701); the adjusting cavity (706) is communicated with the second sliding groove (702).
6. The deep soil greenhouse gas sampling apparatus of claim 5, wherein: two groups of second screw rods (707) are arranged in the adjusting cavity (706); one ends of the two groups of second screw rods (707) are fixedly connected, and the other ends of the two groups of second screw rods are respectively and rotatably connected to the inner walls of the two sides of the adjusting cavity (706); the thread directions of the two groups of second screw rods (707) are opposite, and the central axes are on the same straight line; two groups of second sliding blocks (708) are connected on the inner wall of one side of the adjusting cavity (706) far away from the second sliding groove (702) in a sliding manner; the two groups of second sliding blocks (708) are respectively in threaded connection with one group of second screw rods (707); the two groups of second sliding blocks (708) are respectively connected with one group of clamping plates (703) in a transmission way; a third motor (705) is arranged on one side wall of the shell (701); the output end of the third motor (705) is in transmission connection with one group of second screw rods (707).
7. The deep soil greenhouse gas sampling apparatus of claim 5, wherein: the drilling sampling mechanism (8) comprises a supporting plate (801); two groups of first limit grooves (802) are symmetrically formed at the edges of the two side walls of the supporting plate (801); a group of second limit grooves (803) are formed in the inner wall of one side, close to the support plate (801), of each group of first limit grooves (802); each group of clamping plates (703) movably penetrates through a corresponding group of first limiting grooves (802); each group of limiting blocks (704) movably penetrates through a corresponding group of second limiting grooves (803); a first air guide hole (805) is formed in one side wall of the supporting plate (801); a movable hole (808) is formed in the center of the top of the supporting plate (801); a fourth motor (804) is arranged at the top of the supporting plate (801); the output end of the fourth motor (804) extends into the movable hole (808), and is in transmission connection with a sampling tube (806); the bottom of the sampling tube (806) extends to the lower part of the supporting plate (801) in a transmission way, and a drill bit (807) is connected in a transmission way.
8. The deep soil greenhouse gas sampling apparatus of claim 7, wherein: a sealing ring (809) is sleeved on the inner wall of the movable hole (808); the inner wall of the sealing ring (809) is movably attached to the outer wall of the sampling tube (806); a second air guide hole (810) is formed in the inner wall of the sealing ring (809); the second air guide hole (810) is communicated with the first air guide hole (805); a plurality of groups of air outlet holes (811) are distributed on the inner wall of the sampling tube (806) in an annular array; the second air guide holes (810) are movably communicated with any group of air outlet holes (811); an air inlet hole (812) is formed in the inner wall of the bottom side of the sampling tube (806); a third electric push rod (813) is arranged on the inner wall of the sampling tube (806); the output end of the third electric push rod (813) is in transmission connection with a sealing block (814); the sealing block (814) is movably used for sealing the air inlet hole (812).
9. The deep soil greenhouse gas sampling apparatus of claim 2, wherein: the transfer mechanism (9) comprises an electric sliding table (901); two ends of the electric sliding table (901) are connected to the inner walls of two sides of the sampling box (1); the output end of the electric sliding table (901) is in transmission connection with a first mounting plate (902); a second mounting plate (904) is arranged on the top of the first mounting plate (902); a first telescopic pipe (905) is arranged on one side wall of the second mounting plate (904); a second telescopic pipe (906) is movably penetrated at one end of the first telescopic pipe (905) far away from the second mounting plate (904); one end of the second telescopic pipe (906) far away from the first telescopic pipe (905) is movably communicated with any group of electromagnetic air valves (11); a fourth electric push rod (907) is arranged on one side wall of the second mounting plate (904) close to the first telescopic pipe (905); the output end of the fourth electric push rod (907) is in transmission connection with the second telescopic pipe (906); an automatic pipe coiling device (903) is arranged at the top of the first mounting plate (902); one end of the automatic pipe coiling device (903) is communicated with the first air guide hole (805), and the other end of the automatic pipe coiling device is communicated with the first telescopic pipe (905).
10. A sampling method by the deep soil greenhouse gas sampling apparatus according to any one of claims 1 to 9, characterized in that: the sampling method comprises the following steps:
the control fixing mechanism is used for fixing the sampling box on the ground;
controlling the lifting mechanism to drive the drilling sampling mechanism to descend and simultaneously starting the drilling sampling mechanism;
controlling the drilling sampling mechanism to enter the soil with the set depth and stopping descending;
the greenhouse gas sequentially passes through the drilling sampling mechanism, the transfer mechanism and the corresponding electromagnetic air valve to enter the corresponding vacuum air outlet tank;
the method comprises the steps of circularly operating and collecting a plurality of groups of greenhouse gases in soil with different depths;
controlling the lifting mechanism to drive the drilling sampling mechanism to be recycled into the sampling box;
and (5) completing the sampling work.
CN202311375137.0A 2023-10-23 2023-10-23 Deep soil greenhouse gas sampling device and sampling method Active CN117109993B (en)

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