A sampling device for environmental impact investigation

Abstract

The present invention relates to a sampling device for environmental impact investigation. The device comprises an upper shell, a middle shell and a lower shell. A middle base plate is installed at the bottom of the upper shell, a connecting sleeve is provided at the top of the middle shell, the middle base plate is detachably connected to the connecting sleeve, and the upper port of the lower shell is detachably connected to the middle shell; a central window is provided at the center of the bottom wall of the middle shell, a plurality of soil sample tank installation windows and a plurality of water sampler installation windows are provided outside the central window, a soil sampling sleeve is installed below the central window, a soil sample tank is installed in each soil sample tank installation window, and a water sample collection component is installed in each water sampler installation window; the device also comprises a soil sample collection component; a noise meter slot and an air meter slot are provided at the top of the upper shell, a noise measuring instrument is provided in the noise meter slot, an air quality detector is provided in the air meter slot, and a water permeable hole is provided on the bottom wall of the lower shell. The present invention has a reasonable structural design and reduces the operating burden of sampling personnel.

Description

Technical Field

[0001] The invention belongs to the technical field of sampling facilities, and in particular relates to a sampling device for environmental impact investigation. Background Art

[0002] Environmental impact refers to the effects of human activities (economic, political and social) on the environment and the resulting environmental changes, as well as the resulting effects on human society and economy. The concept of environmental impact includes two levels: the effects of human activities on the environment and the reaction of the environment to humans. It emphasizes both the effects of human activities on the environment, that is, understanding and evaluating what changes have or will occur in the environment due to human activities, and the reaction of such changes to humans, that is, understanding and evaluating what effects these changes will have on human society.

[0003] An important part of environmental impact assessment is to conduct multi-factor sampling at the assessment site and test the collected samples, and finally obtain an environmental impact assessment report. Generally speaking, the factors for evaluating environmental impacts include air factors, water factors, soil factors, and noise factors. The evaluation index of air factors in environmental impacts is obtained by evaluating the environmental air quality, the evaluation index of water factors in environmental impacts is obtained by evaluating the environmental water quality, the evaluation index of soil factors in environmental impacts is obtained by evaluating the environmental soil quality, and the evaluation index of noise factors in environmental impacts is obtained by evaluating the environmental noise. The above-mentioned evaluation indicators are summarized to obtain the final environmental impact assessment report, giving the conclusions on environmental impacts.

[0004] Since there are many evaluation factors involved, it is relatively arduous to sample the factors on site. For air factors and noise factors, since there are integrated air quality detectors and noise meters in the prior art, it is possible to perform factor detection and evaluation on site (also referred to as on-site sampling and evaluation). For water factors and soil factors, due to the lack of integrated on-site detection equipment, it is necessary to go to the laboratory to perform factor detection and evaluation after sampling. In existing operations, evaluators need to hold a variety of detection and sampling equipment to perform detection and sampling operations on site, resulting in cumbersome operations and poor sampling completion. Especially for the sampling of soil factors, there is a problem of difficulty in sampling on site using existing sampling tools. Therefore, people need a sampling device in an integrated form for environmental impact investigation and evaluation to reduce the operating burden of sampling personnel, and such a sampling device does not exist in the prior art. Summary of the invention

[0005] In order to solve the technical problems existing in the known technology, the present invention provides a sampling device for environmental impact investigation which has a reasonable structural design and reduces the operating burden of sampling personnel.

[0006] The technical solution adopted by the present invention to solve the technical problems existing in the known technology is: a sampling device for environmental impact investigation includes an upper shell, a middle shell and a lower shell, a middle base plate is installed at the bottom of the upper shell, a connecting sleeve is provided on the top of the middle shell, the middle base plate and the connecting sleeve are detachably connected, and the upper port of the lower shell is detachably connected to the middle shell; a central window is provided at the center of the bottom wall of the middle shell, a plurality of soil sample tank installation windows and a plurality of water sampler installation windows are provided on the outside of the central window, a soil sampling sleeve is installed below the central window, a soil sample tank is installed in each soil sample tank installation window, and a water sample collection component is installed in each water sampler installation window; A shaft seat is installed in the middle part, a soil extracting shaft is installed in the shaft seat, a soil extracting spiral impeller is installed on the soil extracting shaft and the soil extracting spiral impeller is located in the soil extracting sleeve, a soil extracting motor is also installed in the upper shell body, and its motor shaft is butt-connected with the upper end of the soil extracting shaft; a noise meter slot and an air meter slot are provided on the top of the upper shell body, a noise measuring instrument is provided in the noise meter slot, an air quality detector is provided in the air meter slot, and a water permeable hole is provided on the bottom wall of the lower shell body; a control circuit board and a rechargeable battery are also installed in the upper shell body, a charging interface and operation buttons are provided on the outer wall of the upper shell body, and the soil extracting motor, the action elements of each water sample collection component, the charging interface and the operation buttons are all connected with the control circuit board.

[0007] The advantages and positive effects of the present invention are:

[0008] The present invention provides a sampling device for environmental impact investigation with a reasonable structural design. By providing a detachably connected upper shell, a middle shell and a lower shell, and arranging a soil sample collection component and a water sample collection component inside the shell, and arranging a noise meter and an air quality detector on the upper shell, a technical effect of arranging a multi-factor detection component and a sampling component in an integrated manner is achieved, so that the entire sampling device is easy for sampling personnel to carry. By arranging the upper shell, the middle shell and the lower shell to be detachably connected, and arranging the noise meter and the air quality detector in the noise meter slot and the air meter slot on the upper shell respectively, it is convenient to open the shell to use the soil sample collection component and the water sample collection component inside, and to take the noise meter and the air quality detector, thereby improving the convenience of detection and sampling operations.

[0009] By setting up a soil sampling assembly consisting of a soil sampling motor, a soil sampling shaft, a soil sampling spiral impeller, a soil sampling sleeve and a soil sampling tank, etc., an electric sampling method for soil samples is realized. Compared with the existing method of sampling using manual tools, the electric sampling method reduces the operating burden of the sampling personnel. Since the soil sample tank is detachably connected to the middle shell, it is convenient to disassemble the soil sample tank after the soil sample is sampled, so as to facilitate the use of the sample inside.

[0010] Preferably: the water sample collection component includes a water intake shell with a water intake pump installed inside, a water sample tank installed at the bottom of the water intake shell, a lower solenoid valve is provided at the bottom center of the water sample tank, an upper solenoid valve is installed on the top wall of the water intake shell, and a water pipe joint is installed on the bottom wall of the water intake shell, the water pipe joint is connected to the inlet of the water intake pump through a hose, the outlet of the water intake pump is connected to the inlet of the upper solenoid valve through a hose, and the outlet of the upper solenoid valve is connected to the outside of the middle shell through a hose.

[0011] Preferably: the upper shell and the lower shell are each integrally injection molded, the connecting sleeve and the middle shell are integrally injection molded, the bottom edge of the upper shell is sealed and bonded to the middle substrate, the middle substrate and the connecting sleeve are threadedly connected, and the lower shell and the middle shell are threadedly connected.

[0012] Preferably: an upper shell middle sleeve is integrally injection molded in the middle of the top wall of the upper shell and the soil-extracting motor falls into the middle of the upper shell middle sleeve, and a lower shell middle sleeve is integrally injection molded in the middle of the bottom wall of the lower shell and the soil-extracting sleeve falls into the middle of the lower shell middle sleeve.

[0013] Preferably, an internal thread is provided on the inner wall of each soil sample tank installation window, and an external thread is provided on the outer wall of the upper port of each soil sample tank, and the soil sample tank is threadedly connected to the soil sample tank installation window.

[0014] Preferably, the water sample tank of the water sample collection assembly is located in the water sampler installation window and is sealed and bonded and fixed.

[0015] Preferably: a wiring terminal is provided on the outer wall of the water intake housing, and the water intake pump, the lower solenoid valve and the upper solenoid valve are all connected to the wiring terminal through cables; a connecting terminal connected to the control circuit board is installed at the bottom of the middle substrate, and the wiring terminal and the connecting terminal are connected through a lead wire.

[0016] Preferably, the water intake pump is fixedly connected to the water intake housing via a water pump bracket installed and fixed on the bottom wall of the water intake housing.

[0017] Preferably: the number of soil sample tank installation windows is three, which are arranged at equal angles in the circumferential direction; the number of water sampler installation windows is three, which are arranged at equal angles in the circumferential direction; each soil sample tank installation window is spaced apart from each water sampler installation window. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main perspective structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the main structure of the soil sample collection component in the present invention;

[0020] Figure 3It is a schematic diagram of the three-dimensional structure of the soil sample collection component in the present invention;

[0021] Figure 4 yes Figure 3 Schematic diagram of the structure of the middle excavation component, bottom view;

[0022] Figure 5 yes Figure 1 Schematic diagram of the internal structure of the soil sample collection component, from the top perspective;

[0023] Figure 6 It is a schematic diagram of the top view of the soil sample collection component and the water sample collection component in the present invention;

[0024] Figure 7 yes Figure 1 Schematic diagram of the external structure of the water sample collection component;

[0025] Figure 8 yes Figure 7 Schematic diagram of the internal structure of the water sample collection component.

[0026] In the figure:

[0027] 1. Soil sampling spiral impeller; 2. Middle sleeve of lower shell; 3. Water permeable hole; 4. Water sample collection component; 4-1. Lower solenoid valve; 4-2. Water sample tank; 4-3. Water sampling shell; 4-4. Upper solenoid valve; 4-5. Wiring terminal; 4-6. Water sampling pump; 4-7. Water pump bracket; 4-8. Water pipe joint; 5. Soil sample tank; 6. Hose; 7. Rechargeable battery; 8. Shaft seat; 9. Soil sampling motor; 10. Noise meter slot; 11. Noise measuring instrument; 12. Middle sleeve of upper shell; 13. Air quality detector; 14. Air meter slot; 15. Upper shell; 16. Control circuit board; 17. Middle substrate; 18. Connecting sleeve; 19. Middle shell; 19-1. Center window; 19-2. Soil sample tank installation window; 19-3. Water sampler installation window; 20. Soil sampling sleeve; 21. Lower shell; 22. Soil sampling shaft. DETAILED DESCRIPTION

[0028] In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail.

[0029] See also Figure 1 The sampling device for environmental impact investigation of the present invention comprises an upper shell 15, a middle shell 19 and a lower shell 21. A middle base plate 17 is installed at the bottom of the upper shell 15, a connecting sleeve 18 is provided at the top of the middle shell 19, the middle base plate 17 and the connecting sleeve 18 are detachably connected, and the upper port of the lower shell 21 is detachably connected to the middle shell 19.

[0030] The upper shell 15 and the middle substrate 17 are combined together to encapsulate and protect the internal components. The combination of the upper shell 15 and the middle substrate 17 can be disassembled and separated from the combination of the middle shell 19 and the connecting sleeve, and the lower shell 21 can be disassembled and separated from the combination of the middle shell 19 and the connecting sleeve.

[0031] In this embodiment, the upper shell 15 and the lower shell 21 are each integrally formed by injection molding, the connecting sleeve 18 and the middle shell 19 are integrally formed by injection molding, the bottom edge of the upper shell 15 is sealed and bonded to the middle substrate 17, the middle substrate 17 is threadedly connected to the connecting sleeve 18, and the lower shell 21 is threadedly connected to the middle shell 19. Specifically, an internal thread is provided on the inner wall of the connecting sleeve 18, and an external thread is provided on the outer wall of the middle substrate 17, so that the middle substrate 17 and the connecting sleeve 18 are threadedly connected to ensure the convenience of disassembly and assembly, an internal thread is provided on the inner wall of the upper port of the lower shell 21, and an external thread is provided on the outer wall of the lower part of the middle shell 19, so that the lower shell 21 and the middle shell 19 are threadedly connected to ensure the convenience of disassembly and assembly.

[0032] See also Figure 2 , Figure 3 and Figure 5 , we can see that:

[0033] A central window 19-1 is provided at the center of the bottom wall of the middle shell 19, and multiple soil sample tank installation windows 19-2 and multiple water sampler installation windows 19-3 are provided outside the central window 19-1. A soil sampling sleeve 20 is installed below the central window 19-1, and a soil sample tank 5 is installed in each soil sample tank installation window 19-2, and a water sample collection assembly 4 is installed in each water sampler installation window 19-3. As shown in the figure, the lower end of the soil sampling sleeve 20 is open, and the upper end is connected to the central window 19-1 and bonded and fixed. The soil sample tank 5 is used to receive soil samples. In order to facilitate the disassembly and assembly of the soil sample tank 5, an external thread is provided on the outer wall of the upper port of the soil sample tank 5, and an internal thread is provided on the inner wall of the soil sample tank installation window 19-2. Then, the soil sample tank 5 is installed in the soil sample tank installation window 19-2 with the internal thread, which is convenient for disassembly. Each water sample collection assembly 4 is used to collect water samples.

[0034] See also Figure 6 It can be seen that: in this embodiment, the number of the soil sample tank installation windows 19-2 is three, which are arranged at equal angles in the circumferential direction; the number of the water sampler installation windows 19-3 is three, which are arranged at equal angles in the circumferential direction; each soil sample tank installation window 19-2 is arranged at an interval from each water sampler installation window 19-3. Therefore, the number of soil sample tanks 5 and water sample collection components 4 are both three.

[0035] It also includes a soil sample collection assembly for collecting soil samples. As shown in the figure, a shaft seat 8 is installed in the middle of the middle base plate 17, a soil extraction shaft 22 is installed in the shaft seat 8, a soil extraction spiral impeller 1 is installed on the soil extraction shaft 22 and the soil extraction spiral impeller 1 is located in the soil extraction sleeve 20, the lower end of the soil extraction spiral impeller 1 is exposed from the lower port of the soil extraction sleeve 20, and a soil extraction motor 9 is also installed in the upper shell 15, and its motor shaft is docked with the upper end of the soil extraction shaft 22. The soil extraction motor 9 drives the soil extraction shaft 22 to drive the soil extraction spiral impeller 1 to rotate, and the soil extraction spiral impeller 1 is screwed into the soil, and the soil sample rises along the soil extraction sleeve 20 under the action of the soil extraction spiral impeller 1, and is discharged from the upper port of the soil extraction sleeve 20 and then moves to the side and enters each soil sample tank 5.

[0036] In this embodiment, an upper shell middle sleeve 12 is integrally molded in the middle of the top wall of the upper shell 15, and the soil-taking motor 9 falls into the upper shell middle sleeve 12, and a lower shell middle sleeve 2 is integrally molded in the middle of the bottom wall of the lower shell 21, and the soil-taking sleeve 20 falls into the lower shell middle sleeve 2. The above structure makes the structure of the entire sampling device more compact, reduces the volume of the entire sampling device, and is therefore more convenient to carry and operate.

[0037] See also Figure 7 and Figure 8 , we can see that:

[0038] The water sample collection assembly 4 includes a water intake housing 4-3 with a water intake pump 4-6 installed inside, a water sample tank 4-2 installed at the bottom of the water intake housing 4-3, a lower electromagnetic valve 4-1 is provided at the bottom center of the water sample tank 4-2, and an upper electromagnetic valve 4-4 is installed on the top wall of the water intake housing 4-3. A water pipe connector 4-8 is installed on the bottom wall of the water intake housing 4-3, and the water pipe connector 4-8 is connected to the inlet of the water intake pump 4-6 through a hose 6, and the outlet of the water intake pump 4-6 is connected to the inlet of the upper electromagnetic valve 4-4 through the hose 6, and the outlet of the upper electromagnetic valve 4-4 is connected to the outside of the middle shell 19 through the hose 6.

[0039] Specifically, as shown in the figure, a tube hole is provided on the side wall of the middle shell 19, and the outer end of each hose 6 passes through the corresponding tube hole. When the lower electromagnetic valve 4-1 and the upper electromagnetic valve 4-4 are in the open state, under the pumping action of the water pump 4-6, a negative pressure environment is formed in the water sample tank 4-2, and the water sample enters the inner wall of the water sample tank 4-2 from the inlet of the lower electromagnetic valve 4-1, and then is discharged from the middle shell 19 through the upper electromagnetic valve 4-4. When the lower electromagnetic valve 4-1 and the upper electromagnetic valve 4-4 are closed, the water sample is sealed in the water sample tank 4-2.

[0040] In this embodiment, the water sample tank 4-2 of the water sample collection assembly 4 is located in the water sampler installation window 19-3 and is sealed and bonded and fixed.

[0041] In this embodiment, the water intake pump 4-6 is fixedly connected to the water intake housing 4-3 through a water pump bracket 4-7 installed and fixed on the bottom wall of the water intake housing 4-3.

[0042] A noise meter slot 10 and an air meter slot 14 are provided at the top of the upper shell 15, a noise meter 11 is provided in the noise meter slot 10, and an air quality detector 13 is provided in the air meter slot 14. The noise meter slot 10 and the air meter slot 14 are integrally injection molded on the upper shell 15, the noise meter 11 is plugged and installed in the noise meter slot 10, and the air quality detector 13 is plugged and installed in the air meter slot 14, the noise meter slot 10 and the air meter slot 14 are adapted to the contour shape of the respective internal instruments, so that they are easy to use, the noise meter 11 and the air quality detector 13 are both existing equipment, which are purchased from the market, and the structure and measurement / detection principle are not described in detail.

[0043] A water permeable hole 3 is provided on the bottom wall of the lower shell 21. The water permeable hole 3 connects the outside with the inside of the lower shell 21, so that when the sampling device is immersed in water (only the middle and lower part is immersed, not completely immersed), and under the action of the water pump 4-6, the water sample passes through the water permeable hole 3 upward and enters the inner cavity of the lower shell 21, and then is sucked into the water sample tank 4-2.

[0044] A control circuit board 16 and a rechargeable battery 7 are also installed in the upper housing 15. A charging interface and an operation button are provided on the outer wall of the upper housing 15. The soil sampling motor 9, the action elements of each water sample collection assembly 4 (including the water sampling pump 4-6, the lower solenoid valve 4-1 and the upper solenoid valve 4-4), the charging interface and the operation button are all connected to the control circuit board 16. Among them, the rechargeable battery 7 provides power for the entire sampling device and can be selected as a lithium-ion battery. The operation button is used to input the sampling action instructions of the sampling personnel.

[0045] Specifically, the control circuit board 16 is constructed based on a PLC chip, and a plurality of groups of operation buttons respectively control the actions of the soil sample collection component and each water sample collection component 4 to complete the soil sample collection operation and the water sample collection operation.

[0046] In this embodiment, a connection terminal 4-5 is provided on the outer wall of the water intake housing 4-3, and the water intake pump 4-6, the lower solenoid valve 4-1 and the upper solenoid valve 4-4 are all connected to the connection terminal 4-5 through cables. Specifically, a wire hole is provided on the bottom wall of the middle housing 19, and the cable of the lower solenoid valve 4-1 is connected to the connection terminal 4-5 after passing through the wire hole. A connection terminal connected to the control circuit board 16 is installed at the bottom of the middle substrate 17, and the connection terminal 4-5 is connected to the connection terminal through a lead wire. Specifically, terminals matching the connection terminal and the connection terminal 4-5 are provided at both ends of the lead wire, and the circuit is connected by plug-in connection.

[0047] How to operate:

[0048] This sampling device is Figure 1 The form in the sample is taken as the initial form and carried to the sampling site by the sampling personnel;

[0049] After arriving at the sampling site, corresponding operations are performed according to the sampling requirements. When it is necessary to detect noise factors, the noise measuring instrument 11 can be removed from the upper housing 15, and after completing the noise measurement and recording, it can be put back into the noise meter slot 10. When it is necessary to detect air quality factors, the air quality detector 13 can be removed from the upper housing 15, and after completing the air quality detection and recording, it can be put back into the air meter slot 14.

[0050] When water element sampling is required, the middle and lower part of the sampling device is immersed in the water body, and then the operation button on the upper shell 15 is operated to activate the water sample collection component 4. Under the dual effects of the external water pressure and the water pump 4-6, the water source enters the interior of the lower shell 21, and then enters the water sample tank 4-2 through the lower electromagnetic valve 4-1. When the water pump 4-6 continues to work, the water sample fills the water sample tank 4-2, and the excess water sample is discharged from the sampling device through the upper hose 6. After a certain period of time, the operation of the water sample collection component 4 is stopped by the operation button. At this time, the lower electromagnetic valve 4-1 and the upper electromagnetic valve 4-4 are both closed, and the water sample is sealed inside. After the sampling device is lifted upward, the water source in the lower shell 21 flows out from the water permeable hole 3;

[0051] When soil element sampling is required, the lower housing 21 is removed, and then the sampling device is placed at the sampling position. The soil sampling motor 9 is operated by operating the button, and the soil sampling spiral impeller 1 rotates forward to excavate the soil from the ground and lift it along the soil sampling sleeve 20. The soil sample is discharged from the upper port of the soil sampling sleeve 20 and then squeezed and moved sideways, so that the soil sample enters each soil sample tank 5. Then, the soil sampling motor 9 is operated by the button to move in the reverse direction to discharge the soil sample in the soil sampling sleeve 20; then the lower housing 21 is installed back;

[0052] It is worth noting that when both water and soil samples need to be collected in a single sampling operation, it is advisable to collect water samples first and then soil samples;

[0053] After the sampling is completed, the sampling personnel will take the sampling device and the samples inside it back to the laboratory, disassemble the lower shell 21, remove the soil sample tanks 5, and then set a water sample container under the water sample collection component 4. The lower solenoid valve 4-1 and the upper solenoid valve 4-4 are opened by operating the operating buttons on the upper shell 15, and the water sample flows into the water sample container under the action of gravity; the collection of soil and water samples is now completed, and the detection instrument can be used for element detection.

Claims

1. A sampling device for environmental impact investigation, characterized by: The invention comprises an upper shell (15), a middle shell (19) and a lower shell (21); a middle base plate (17) is installed at the bottom of the upper shell (15); a connecting sleeve (18) is provided at the top of the middle shell (19); the middle base plate (17) and the connecting sleeve (18) are detachably connected; and an upper port of the lower shell (21) is detachably connected to the middle shell (19); a central window (19-1) is provided at the center of the bottom wall of the middle shell (19); a plurality of soil sample tank installation windows (19-2) and a plurality of water sampler installation windows (19-3) are provided outside the central window (19-1); a soil sampling sleeve (20) is installed below the central window (19-1); a soil sample tank (5) is installed in each soil sample tank installation window (19-2); and a plurality of water sampler installation windows (19-3) are provided outside the central window (19-1). A water sample collection assembly (4) is installed in the device installation window (19-3); a shaft seat (8) is installed in the middle of the middle base plate (17); a soil sampling shaft (22) is installed in the shaft seat (8); a soil sampling spiral impeller (1) is installed on the soil sampling shaft (22), and the soil sampling spiral impeller (1) is located in the soil sampling sleeve (20); a soil sampling motor (9) is also installed in the upper shell (15), and the motor shaft is butt-connected to the upper end of the soil sampling shaft (22); a noise meter slot (10) and an air meter slot (14) are provided at the top of the upper shell (15); a noise measuring instrument (11) is provided in the noise meter slot (10); an air quality detector (13) is provided in the air meter slot (14); and a water permeable hole (3) is provided on the bottom wall of the lower shell (21); A control circuit board (16) and a rechargeable battery (7) are also installed in the upper housing (15); a charging interface and operating buttons are provided on the outer wall of the upper housing (15); the soil sampling motor (9), the action elements of each water sample collection assembly (4), the charging interface, and the operating buttons are all connected to the control circuit board (16); The water sample collection assembly (4) comprises a water intake housing (4-3) in which a water intake pump (4-6) is installed, a water sample tank (4-2) is installed at the bottom of the water intake housing (4-3), a lower electromagnetic valve (4-1) is provided at the bottom center of the water sample tank (4-2), an upper electromagnetic valve (4-4) is installed on the top wall of the water intake housing (4-3), and a water pipe joint (4-8) is installed on the bottom wall of the water intake housing (4-3), the water pipe joint (4-8) is connected to the inlet of the water intake pump (4-6) through a hose (6), the outlet of the water intake pump (4-6) is connected to the inlet of the upper electromagnetic valve (4-4) through the hose (6), and the outlet of the upper electromagnetic valve (4-4) is connected to the outside of the middle housing (19) through the hose (6).

2. The sampling device for environmental impact investigation according to claim 1, characterized in that: The upper shell (15) and the lower shell (21) are each integrally injection-molded, the connecting sleeve (18) and the middle shell (19) are integrally injection-molded, the bottom edge of the upper shell (15) is sealed and bonded to the middle base plate (17), the middle base plate (17) is threadedly connected to the connecting sleeve (18), and the lower shell (21) is threadedly connected to the middle shell (19).

3. The sampling device for environmental impact investigation according to claim 2, characterized in that: An upper shell middle sleeve (12) is integrally injection-molded in the middle of the top wall of the upper shell (15), and the soil-excavating motor (9) falls into the interior of the upper shell middle sleeve (12). A lower shell middle sleeve (2) is integrally injection-molded in the middle of the bottom wall of the lower shell (21), and the soil-excavating sleeve (20) falls into the interior of the lower shell middle sleeve (2).

4. The sampling device for environmental impact investigation according to claim 3, characterized in that: An internal thread is provided on the inner wall of each soil sample tank installation window (19-2), and an external thread is provided on the outer wall of the upper port of each soil sample tank (5), and the soil sample tank (5) is threadedly connected to the soil sample tank installation window (19-2).

5. The sampling device for environmental impact investigation as claimed in claim 4, characterized in that: The water sample tank (4-2) of the water sample collection assembly (4) is located in the water sampler installation window (19-3) and is sealed and bonded to be fixed.

6. The sampling device for environmental impact investigation according to claim 5, characterized in that: A wiring terminal (4-5) is provided on the outer wall of the water intake housing (4-3); the water intake pump (4-6), the lower solenoid valve (4-1) and the upper solenoid valve (4-4) are all connected to the wiring terminal (4-5) via cables; a connecting terminal connected to the control circuit board (16) is installed at the bottom of the middle substrate (17); the wiring terminal (4-5) and the connecting terminal are connected via a lead wire.

7. The sampling device for environmental impact investigation according to claim 6, characterized in that: The water intake pump (4-6) is fixedly connected to the water intake housing (4-3) via a water pump bracket (4-7) installed and fixed on the bottom wall of the water intake housing (4-3).

8. The sampling device for environmental impact investigation according to claim 7, characterized in that: The number of the soil sample tank installation windows (19-2) is three, which are arranged at equal angles in the circumferential direction; the number of the water sampler installation windows (19-3) is three, which are arranged at equal angles in the circumferential direction; each soil sample tank installation window (19-2) and each water sampler installation window (19-3) are arranged at intervals.

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