Underground water quality monitoring and sampling device

Abstract

The invention relates to the technical field of underground water sampling, in particular to an underground water quality monitoring and sampling device which comprises a sampling box, a buoyancy component is fixedly mounted on the lower side of the sampling box, a sampling shell is fixedly mounted on the lower side of the buoyancy component, and a sampling component is rotatably mounted on the upper side of the sampling shell. An anti-turbulent flow assembly is fixedly mounted on the lower side of the sampling shell; the worm drives the worm gear to rotate, the worm gear drives the driving rod to rotate, the driving rod drives the driving gear to rotate, the driving gear drives one of the connecting gears to rotate, and therefore the multiple sets of connecting gears are driven to perform linkage movement; the six anti-spoiler plates are driven to move and are parallel to one another, large-particle sediments which do not participate in detection at the bottom of the sampling well are separated, then sampling water is sucked into the sampling well through the one-way suction nozzle, and the situation that the sampling water is mixed and polluted due to turbulent flow generated in the suction process is prevented.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of underground water sampling, in particular to an underground water quality monitoring sampling device. BACKGROUND

[0002] Underground water sampling is a very critical work and is widely applied to the fields of environmental monitoring, pollution investigation, water resource assessment and drinking water safety assessment, and a sampling device needs to be used when underground water is sampled.

[0003] Chinese patent CN119309866B discloses a sampling device for underground water quality monitoring and a sampling method, which comprises a sampling device for underground water quality monitoring and a sampling method, a connecting rope is provided on the top of a sampling cylinder, and a water inlet hole ring is arranged on the upper section of the sampling cylinder; a water squeezing mechanism is arranged outside the sampling cylinder, the water squeezing mechanism comprises a sliding ring, a water absorption sponge and a squeezing plate, the sliding ring is sleeved outside the sampling cylinder and is connected with the sampling cylinder in sliding mode, one end of the squeezing plate is hingedly connected with the sliding ring, the water absorption sponge is arranged between the squeezing plate and the outer surface of the sampling cylinder, and a pulling rope is connected with the upper end of the squeezing plate; the water squeezing mechanism is driven to move upward to the water inlet hole ring by pulling the pulling rope upward, the sliding ring abuts against the top end of the sampling cylinder, the squeezing plate rotates toward one side of the sampling cylinder to squeeze the water absorption sponge, and water is caused to flow into the sampling cylinder along the water inlet hole ring. The application has the advantages that sufficient samples can be collected when the water level in the sampling well is low, and the sample in the sampling cylinder has a low sand content.

[0004] The device still has some problems, wherein the water squeezing mechanism is driven to move upward to the water inlet hole ring by pulling the pulling rope upward, the sliding ring abuts against the top end of the sampling cylinder, the squeezing plate rotates toward one side of the sampling cylinder to squeeze the water absorption sponge, and water is caused to flow into the sampling cylinder along the water inlet hole ring, and sampling in the sampling well is completed. In the actual use process, the sampling of the sampling well is carried out by using the sponge, the strong adsorption capacity and filtering property of the sponge can adsorb the dissolved or particulate pollutants in the water, the concentration of the pollutants in the actual sampling water is lower than the true value, a false negative situation occurs, and the detection result of the water quality is affected. SUMMARY

[0005] The purpose of the application is to provide an underground water quality monitoring sampling device to solve the problems in the background.

[0006] The technical scheme of the application is as follows: an underground water quality monitoring sampling device comprises a sampling box, a buoyancy assembly is fixedly installed on the lower side of the sampling box, a sampling shell is fixedly installed on the lower side of the buoyancy assembly, a sampling assembly is rotatably installed on the upper side of the sampling shell, and an anti-turbulence assembly is fixedly installed on the lower side of the sampling shell. The anti-turbulence assembly comprises a plurality of isolation units, the lower side of the sampling shell is fixedly provided with a base, one side of the base is fixedly provided with a fixed frame, one side of the fixed frame is rotatably provided with an isolation unit through a rotating shaft, the lower side of the base is provided with a sliding groove, a plurality of sliding blocks are slidably arranged in the sliding groove, the lower side of each sliding block is fixedly provided with a connecting column, the bottom end of each connecting column is fixedly provided with a moving frame, one side of each moving frame is rotatably provided with two isolation units through a rotating shaft, the bottom end of each connecting column is fixedly provided with a combination frame, one side of the combination frame is rotatably provided with an isolation unit through a rotating shaft, and one side of the fixed frame is rotatably provided with a driving unit.

[0007] Preferably, the isolation unit comprises a plurality of external frames and a plurality of anti-turbulence plates, a plurality of anti-turbulence plates are correspondingly fixedly arranged on one side of the external frame, the surface of each anti-turbulence plate is provided with a through hole, the upper side of the external frame is fixedly provided with a connecting gear, a plurality of connecting gears are meshed, and the other side of the external frame is rotatably provided with a connecting piece.

[0008] Preferably, the driving unit comprises a driving rod, the driving rod is rotatably arranged on one side of the fixed frame, the driving rod is fixedly provided with a driving gear, the driving gear is meshed with one of the connecting gears, the other end of the driving rod is fixedly provided with a worm gear, the upper side of the base is rotatably provided with a worm and extends to the outside, and the worm gear is meshed with the worm.

[0009] Preferably, the sampling assembly comprises a conveying pipe, the conveying pipe is rotatably arranged on the upper side of the sampling shell and extends to the inside of the sampling box, the surface of the conveying pipe is fixedly provided with a plurality of suction pipes, the surface of the sampling shell is provided with a plurality of sampling holes, the sampling holes are fixedly provided with one-way suction nozzles, the surface of the conveying pipe is provided with a plurality of conveying holes, the top end of the worm is fixedly connected with the bottom end of the conveying pipe, and the top end of the conveying pipe is fixedly provided with a negative pressure suction unit.

[0010] Preferably, the negative pressure suction unit comprises a threaded rod, the threaded rod is fixedly arranged on the top end of the conveying pipe, the inner wall of the sampling box is fixedly provided with a mounting plate, the non-threaded area of the surface of the threaded rod is rotatably arranged on the mounting plate through a rotating shaft, the surface of the threaded rod is screw-connected with a liquid suction plate, the liquid suction plate is slidably arranged on the inner wall of the sampling box, the upper side of the mounting plate is fixedly provided with a driving motor, and the output end of the driving motor is coaxially and fixedly connected with the top end of the threaded rod.

[0011] Preferably, the buoyancy assembly comprises a buoyancy column, the buoyancy column is fixedly arranged on the lower side of the sampling box, the lower side of the buoyancy column is fixedly connected with the upper side of the sampling shell, the surface of the buoyancy column is fixedly provided with a plurality of balance rods, and one end of each balance rod is fixedly provided with a buoyancy ball.

[0012] Preferably, one side of the sampling box is fixedly provided with a box door, and one side of the box door is fixedly provided with a leading-out external connecting pipe.

[0013] Preferably, one way conveying nozzles are fixedly arranged in the conveying holes.

[0014] Preferably, a lifting rope buckle is fixedly arranged on the upper side of the sampling box.

[0015] Preferably, the balance bar is made of metal and used for counterweight balance.

[0016] Compared with the prior art, the present application has the following beneficial effects: 1. The worm drives the worm gear to rotate, the worm gear drives the driving rod to rotate, the driving rod drives the driving gear to rotate, the driving gear drives one of the connecting gears to rotate, the connecting gear drives the connecting gear meshed therewith to rotate, the connecting gear drives the corresponding external connecting frame to move, the external connecting frame drives the connecting gear at the other end to rotate, thereby driving multiple sets of connecting gears to move in linkage, and under the joint action of the two moving frames, the connecting columns and the sliding blocks, six anti-turbulence plates are driven to move and parallel to each other, the large particles of sediment on the bottom of the sampling well which do not participate in detection are blocked, and the sampling water is sucked into the sampling area through the one-way suction nozzle, so as to prevent turbulence from being generated when sucking and causing mixed pollution of the sampling water body; 2. The sampling box of the device floats on the upper side of the water body under the action of the four equidistant buoyancy balls, the structure of the lower side of the buoyancy ball is arranged inside the water body, the device is suspended on the water body, so as to ensure that the bottom of the device does not contact the bottom of the sampling well, and turbulence is avoided to be generated on the water body at the bottom of the sampling well, so as to make the sediment at the bottom float up and affect normal sampling; 3. After the six anti-turbulence plates are parallel to each other, the suction inlets of the four suction pipes are aligned with the one-way suction nozzles, and the liquid suction plates reach the maximum height, at this time, the negative pressure effect of the sampling area generates negative pressure suction through the conveying pipe, and the sampling water is conveyed to the suction pipe through the one-way suction nozzle and conveyed to the sampling area through the one-way conveying nozzle, so as to achieve the effect of isolating the water body at the bottom in advance to prevent turbulence before sucking, and further improve the accuracy of water sampling. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further explained in combination with the drawings and embodiments: Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the overall structure of the present application; Figure 3 is a schematic diagram of the structure of the sampling assembly in the present application; Figure 4 is a schematic diagram of the cross-sectional structure of the sampling shell of the present application; Figure 5 This is a schematic diagram of the anti-turbulence component in this invention; Figure 6 yes Figure 5 Enlarged structural diagram of region A in the middle; Figure 7 yes Figure 5 Enlarged structural diagram of region B in the middle; Figure 8 This is a schematic diagram of the isolation unit of the present invention; Figure 9 This is a schematic diagram of the anti-dampness plate and its related structures of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1. Sampling box; 2. Buoyancy column; 3. Sampling shell; 4. Outlet pipe; 5. Box door; 6. Buoyancy ball; 7. Balance bar; 8. Delivery pipe; 9. Threaded rod; 10. Suction plate; 11. Suspension rope tether; 12. Drive motor; 13. Mounting plate; 14. One-way delivery nozzle; 15. One-way suction nozzle; 16. Suction pipe; 17. Base; 18. Anti-turbulence plate; 19. External frame; 20. Connecting gear; 21. Connecting piece; 22. Drive gear; 23. Drive rod; 24. Worm gear; 25. Worm wheel; 26. Fixed frame; 27. Through hole; 28. Moving frame; 29. ​​Merging frame; 30. Connecting column; 31. Slider. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention necessarily exceeds the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but still fall within the protection scope of this application.

[0020] Figures 1-9 This is the preferred embodiment of the present invention, which is described below in conjunction with the accompanying drawings. Figures 1-9 The present invention will be further described below.

[0021] like Figures 1-9 As shown, the groundwater quality monitoring and sampling device includes a sampling box 1, a buoyancy component is fixedly installed on the lower side of the sampling box 1, a sampling shell 3 is fixedly installed on the lower side of the buoyancy component, a sampling component is rotatably installed on the upper side of the sampling shell 3, and an anti-turbulence component is fixedly installed on the lower side of the sampling shell 3. The anti-turbulence assembly comprises a plurality of isolation units, the lower side of the sampling shell 3 is fixedly provided with a base 17, one side of the base 17 is fixedly provided with a fixed frame 26, one side of the fixed frame 26 is rotatably provided with an isolation unit through a rotating shaft, the lower side of the base 17 is provided with a sliding groove, a plurality of sliding blocks 31 are slidably arranged in the sliding groove, the lower side of each sliding block 31 is fixedly provided with a connecting column 30, the bottom end of each connecting column 30 is fixedly provided with a moving frame 28, one side of each moving frame 28 is rotatably provided with two isolation units through a rotating shaft, the bottom end of each connecting column 30 is fixedly provided with a merging frame 29, one side of the merging frame 29 is rotatably provided with an isolation unit through a rotating shaft, and one side of the fixed frame 26 is rotatably provided with a driving unit.

[0022] Through the above structure, the lower side of the sampling box 1 is sequentially provided with a buoyancy assembly, a sampling shell 3 and an anti-turbulence assembly, wherein the anti-turbulence assembly comprises six identical isolation units, the fixed frame 26 provided on one side of the base 17 is L-shaped, two isolation units are arranged on the side away from the base 17, a ring-shaped sliding groove is arranged on the lower side of the base 17, four groups of sliding blocks 31 and connecting columns 30 are slidably arranged in the sliding groove, two groups of sliding blocks 31 and connecting columns 30 are fixedly connected with two moving frames 28, two isolation units are rotatably arranged at the end of each moving frame 28 away from the base 17, a total of six isolation units are arranged, the last two groups of sliding blocks 31 and connecting columns 30 are correspondingly provided with merging frames 29, the two merging frames 29 are identical in size and are rotatably arranged on the opposite sides of the two isolation units, and when the isolation units are fully unfolded, the two merging frames 29 are mutually attached and are located on the diameter of the circle formed by the fixed frame 26, the driving unit drives one of the isolation units to move, so that the other isolation units move in a chain, and the isolation units are unfolded to form a circle, the water at the bottom of the sampling well is divided, and the disturbance at the bottom during sampling is prevented, so that the sediments do not float up. Compared with the traditional fixed isolation net disc, the six isolation units can be folded and stored, so that the storage space is reduced, the area of the isolation units is reduced, and the isolation units are prevented from being damaged due to collision during transportation.

[0023] Further, the isolation unit comprises a plurality of external frames 19 and a plurality of anti-turbulence plates 18, the plurality of anti-turbulence plates 18 are fixedly arranged on one side of the plurality of external frames 19, the surface of each anti-turbulence plate 18 is provided with a through hole 27, the upper side of each external frame 19 is fixedly provided with a connecting gear 20, the plurality of connecting gears 20 are engaged, and the other side of each external frame 19 is rotatably provided with a connecting plate 21.

[0024] The anti-turbulence plate 18 is a fan shape with an included angle of 55°, six anti-turbulence plates 18 are arranged at equal intervals, six outer connecting frames 19 are arranged at equal intervals, the outer connecting frame 19 is an arc shape, the two ends of each outer connecting frame 19 are provided with a connecting gear 20, the space between the two anti-turbulence plates 18 provides a meshing space for the two connecting gears 20, the surface of each anti-turbulence plate 18 is provided with a through hole 27 for passing through the water body, the meshing position of the two connecting gears 20 is connected by a connecting plate 21, and the running stability during lifting is improved.

[0025] Further, the driving unit comprises a driving rod 23 rotatably arranged on one side of the fixed frame 26, a driving gear 22 fixedly arranged on the driving rod 23, the driving gear 22 being engaged with one of the connecting gears 20, and a worm gear 25 fixedly arranged at the other end of the driving rod 23, the upper side of the base 17 being rotatably arranged with a worm 24 extending to the outside, the worm gear 25 being engaged with the worm 24.

[0026] Further, the driving unit comprises a driving rod 23 rotatably arranged on one side of the fixed frame 26, a driving gear 22 fixedly arranged on the driving rod 23, the driving gear 22 being engaged with one of the connecting gears 20, and a worm gear 25 fixedly arranged at the other end of the driving rod 23, the upper side of the base 17 being rotatably arranged with a worm 24 extending to the outside, the worm gear 25 being engaged with the worm 24.

[0027] Further, the sampling assembly comprises a conveying pipe 8 rotatably arranged on the upper side of the sampling shell 3 and extending to the inside of the sampling box 1, a plurality of suction pipes 16 fixedly arranged on the surface of the conveying pipe 8, a plurality of sampling holes arranged on the surface of the sampling shell 3, a one-way suction nozzle 15 fixedly arranged in the sampling hole, a plurality of conveying holes arranged on the surface of the conveying pipe 8, the top end of the worm 24 being fixedly connected with the bottom end of the conveying pipe 8, and a negative pressure suction unit fixedly arranged at the top end of the conveying pipe 8.

[0028] Further, the sampling assembly comprises a conveying pipe 8 rotatably arranged on the upper side of the sampling shell 3 and extending to the inside of the sampling box 1, a plurality of suction pipes 16 fixedly arranged on the surface of the conveying pipe 8, a plurality of sampling holes arranged on the surface of the sampling shell 3, a one-way suction nozzle 15 fixedly arranged in the sampling hole, a plurality of conveying holes arranged on the surface of the conveying pipe 8, the top end of the worm 24 being fixedly connected with the bottom end of the conveying pipe 8, and a negative pressure suction unit fixedly arranged at the top end of the conveying pipe 8.

[0029] Furthermore, the negative pressure suction unit includes a threaded rod 9, which is fixedly installed at the top of the delivery pipe 8. An installation plate 13 is fixedly installed on the inner wall of the sampling box 1. The non-threaded area of ​​the threaded rod 9 is rotatably installed on the installation plate 13 via a rotating shaft. A suction plate 10 is screwed onto the surface of the threaded rod 9 and is slidably installed on the inner wall of the sampling box 1. A drive motor 12 is fixedly installed on the upper side of the installation plate 13, and the output end of the drive motor 12 is coaxially fixedly connected to the top of the threaded rod 9.

[0030] With the above structure, an anti-loosening pre-tightening structure (such as a spring washer and a rubber sealing ring) is added at the connection between the suction plate 10 and the threaded rod 9 to ensure that there is no relative movement between the suction plate 10 and the threaded rod 9, thus ensuring the smooth rise of the suction plate 10. The suction plate 10 can be replaced with an auxiliary air extraction component, and the sampling box 1 can be externally connected to an auxiliary air extraction component (such as a miniature vacuum pump). A sealing sleeve is installed on the lower side of the suction plate 10, located in the screw connection area between the threaded rod 9 and the suction plate 10, to improve airtightness during movement. The height of the threaded rod 9 is consistent with the length of the delivery pipe 8 extending into the sampling box 1. When the threaded rod 9 drives the suction plate 10... When moving upwards, a negative pressure is generated on the inner wall of the sampling box 1, and the sampled water can be transported and sucked in through the suction pipe 16 at the bottom of the delivery pipe 8. The drive motor 12 installed on the upper side of the mounting plate 13 is a servo motor that can rotate in both directions. It should be noted that in order to avoid the multiple anti-turbulence plates 18 from unfolding too quickly and causing turbulence inside the water, the rotation speed of the drive motor 12 can be reduced when it is unfolded (by setting the number of rotations and the required time data), thus delaying the unfolding action and avoiding water turbulence. This limitation method of the drive motor 12 is existing technology and will not be described in detail here.

[0031] Furthermore, the buoyancy assembly includes a buoyancy column 2, which is fixedly installed on the lower side of the sampling box 1. The lower side of the buoyancy column 2 is fixedly connected to the upper side of the sampling shell 3. Multiple balance bars 7 are fixedly installed on the surface of the buoyancy column 2, and a buoyancy ball 6 is fixedly installed on one end of each of the multiple balance bars 7.

[0032] With the above structure, four balance bars 7 are installed at equal intervals on the surface of the buoyancy column 2. The length of the balance bar 7 is greater than the radius of the circle formed when the anti-turbulence plate 18 is unfolded. A buoyancy ball 6 is installed at one end of each balance bar 7. Through the buoyancy effect generated in four directions, the sampling box 1 is located above the water body, while the rest of the structure is located in the water body.

[0033] Furthermore, a door 5 is fixedly installed on one side of the sampling box 1, and an external outlet pipe 4 is fixedly installed on one side of the door 5.

[0034] Through the above structure, the box door 5 is installed through multiple bolts, which can be disassembled for subsequent maintenance, and the lead-out external pipe 4 is installed on one side, and the valve is installed, which can be opened after the collection to lead out the collected water.

[0035] Further, the one-way conveying nozzle 14 is fixedly installed in the plurality of conveying holes.

[0036] Through the above structure, the direction of the one-way conveying nozzle 14 is from the conveying pipe 8 to the inside of the sampling box 1, which can prevent the backflow of the sampling water.

[0037] Further, the lifting rope buckle 11 is fixedly installed on the upper side of the sampling box 1.

[0038] Through the above structure, the lifting rope buckle 11 is installed at the center position on the upper side of the sampling box 1, which is convenient for the installation of the lifting rope.

[0039] Further, the balance bar 7 is made of metal material for counterweight balance.

[0040] Through the above structure, the metal balance bar 7 is used for counterweight, which can make the buoyancy ball 6 completely immersed in the water body, thereby preventing it from shaking with the water body, and improving the stability of the device on the water surface.

[0041] Working principle: when sampling, first, the lifting rope is tied with the lifting rope buckle 11 to lift the device, and slowly send it into the low water level sampling well, when the device enters the sampling well and contacts with the sampling water in the well, under the action of the four equidistant buoyancy balls 6, the sampling box 1 of the device floats on the upper side of the water body, the structure of the lower side of the buoyancy ball 6 is placed in the water body, and the device is stably floated on the water body, and then the sampling is started. First start drive motor 12, drive motor 12 output end drive screw rod 9 rotation, screw rod 9 drive liquid suction plate 10 upward movement, liquid suction plate 10 in upward movement will make the sampling space inside the sampling box 1 increase, make its inside form negative pressure environment, wherein in the connecting part of liquid suction 10 plate and screw rod 9, increase the anti-looseness pre-tightening structure (such as spring washer and rubber sealing ring), ensure that liquid suction plate 10 and screw rod 9 have no relative movement, the optional auxiliary air extraction assembly (such as micro vacuum pump) can be directly communicated with the sampling space in the sampling box 1, through the rapid negative pressure supplement, ensure the vacuum degree required for sampling. Screw rod 9 drive conveying pipe 8 rotation, conveying pipe 8 drive suction pipe 16 rotation, make four suction pipes 16 rotation and gradually close to the corresponding one-way suction nozzle 15, at the same time, conveying pipe 8 drive worm 24 rotation, worm 24 drive worm wheel 25 rotation, worm wheel 25 drive drive rod 23 rotation, drive rod 23 drive drive gear 22 rotation, drive gear 22 drive one of the connecting gears 20 rotation, one of the connecting gears 20 drive the meshing connecting gears 20 rotation, connecting gears 20 drive the corresponding external frame 19 movement, external frame 19 drive the connecting gears 20 at the other end rotation, thereby drive multiple connecting gears 20 interlocking movement, and under the joint action of two movement frames 28 cooperation connecting column 30 and slider 31, drive six anti-turbulence plates 18 movement, make six anti-turbulence plates 18 along the circular surface of base 17 movement, and make two merging frames 29 gradually close, when two merging frames 29 adhere, six anti-turbulence plates 18 are parallel to each other at this time; When six anti-turbulence plates 18 are parallel to each other, close drive motor 12, at this time, the suction inlet of four suction pipes 16 is aligned with one-way suction nozzle 15 and liquid suction plate 10 reaches the maximum height, at this time, the negative pressure effect of the sampling area through conveying pipe 8 generates negative pressure suction, and through one-way suction nozzle 15, the sampling water is conveyed to suction pipe 16 and through one-way suction nozzle 14 to the sampling area; Wait for a period of time until the sampling is completed, start drive motor 12 reverse rotation, retract anti-turbulence plate 18, and reset suction pipe 16, etc., through the lifting rope, pull the device out of the sampling well, take out the collection pipe, align it with the external pipe 4, open the valve, take out the sampling water, complete the sampling of water body.

[0042] The above is only the preferred embodiment of the present application, not other forms of the present application, any skilled in the art may use the above disclosed technical content to change or modify equivalent embodiments. However, any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments, still belongs to the protection scope of the present application.

Claims

1. A groundwater quality monitoring sampling device comprising a sampling case (1), characterized in that: The sampling box (1) is fixedly installed with a buoyancy assembly on the lower side, the lower side of the buoyancy assembly is fixedly installed with a sampling shell (3), the upper side of the sampling shell (3) is rotatably installed with a sampling assembly, and the lower side of the sampling shell (3) is fixedly installed with an anti-turbulence assembly. The anti-turbulence assembly comprises a plurality of isolation units, the lower side of the sampling shell (3) is fixedly installed with a base (17), one side of the base (17) is fixedly installed with a fixing frame (26), one side of the fixing frame (26) is rotatably installed with an isolation unit through a rotating shaft, the lower side of the base (17) is provided with a sliding groove, a plurality of sliding blocks (31) are slidably installed in the sliding groove, the lower side of the sliding block (31) is fixedly installed with a connecting column (30), the bottom end of the two connecting columns (30) is fixedly installed with a moving frame (28), one side of the two moving frames (28) is rotatably installed with two isolation units through a rotating shaft, the bottom end of the two connecting columns (30) is fixedly installed with a merging frame (29), one side of the merging frame (29) is rotatably installed with an isolation unit through a rotating shaft, and one side of the fixing frame (26) is rotatably installed with a driving unit.

2. The groundwater quality monitoring sampling device of claim 1, wherein: The isolation unit comprises a plurality of external frames (19) and a plurality of anti-turbulence plates (18), a plurality of anti-turbulence plates (18) are fixedly installed on one side of the plurality of external frames (19), the surfaces of the plurality of anti-turbulence plates (18) are provided with through holes (27), the upper side of the external frame (19) is fixedly installed with a connecting gear (20), a plurality of connecting gears (20) are engaged, and the other side of the external frame (19) is rotatably installed with a connecting piece (21).

3. The groundwater quality monitoring sampling device of claim 2, wherein: The driving unit comprises a driving rod (23), the driving rod (23) is rotatably installed on one side of the fixing frame (26), the driving rod (23) is fixedly installed with a driving gear (22) on the upper side, the driving gear (22) is engaged with one of the connecting gears (20), the other end of the driving rod (23) is fixedly installed with a worm gear (25), the upper side of the base (17) is rotatably installed with a worm (24) and extends to the outside, and the worm gear (25) is engaged with the worm (24).

4. The groundwater quality monitoring sampling device of claim 3, wherein: The sampling assembly comprises a conveying pipe (8), the conveying pipe (8) is rotatably installed on the upper side of the sampling shell (3) and extends to the inside of the sampling box (1), a plurality of suction pipes (16) are fixedly installed on the surface of the conveying pipe (8), a plurality of sampling holes are formed in the surface of the sampling shell (3), a one-way suction nozzle (15) is fixedly installed in the sampling hole, a plurality of conveying holes are formed in the surface of the conveying pipe (8), the top end of the worm (24) is fixedly connected with the bottom end of the conveying pipe (8), and the top end of the conveying pipe (8) is fixedly installed with a negative pressure suction unit.

5. The groundwater quality monitoring sampling device of claim 4, wherein: The negative pressure suction unit comprises a threaded rod (9) fixedly installed at the top end of the conveying pipe (8), an installation plate (13) fixedly installed on the inner wall of the sampling box (1), the non-threaded area of the surface of the threaded rod (9) being rotatably installed on the installation plate (13) through a rotating shaft, and a liquid suction plate (10) screw-connected on the surface of the threaded rod (9) and slidably installed on the inner wall of the sampling box (1), wherein a driving motor (12) is fixedly installed on the upper side of the installation plate (13), and the output end of the driving motor (12) is coaxially fixedly connected with the top end of the threaded rod (9).

6. The groundwater quality monitoring sampling device of claim 5, wherein: The buoyancy assembly comprises a buoyancy column (2) fixedly installed on the lower side of the sampling box (1), the lower side of the buoyancy column (2) being fixedly connected with the upper side of the sampling shell (3), and a plurality of balance rods (7) fixedly installed on the surface of the buoyancy column (2), one end of each of the balance rods (7) being fixedly installed with a buoyancy ball (6).

7. The groundwater quality monitoring sampling device of claim 1, wherein: One side of the sampling box (1) is fixedly installed with a box door (5), and one side of the box door (5) is fixedly installed with a leading-out external pipe (4).

8. The groundwater quality monitoring sampling device of claim 4, wherein: A one-way conveying nozzle (14) is fixedly installed in each of the conveying holes.

9. The groundwater quality monitoring sampling device of claim 1, wherein: The upper side of the sampling box (1) is fixedly installed with a lifting rope buckle (11).

10. The groundwater quality monitoring sampling device of claim 6, wherein: The balance rod (7) is made of metal and used for counterweight balance.

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