Underground water monitoring well water taking and sampling device and method

Abstract

The invention relates to the field of environmental monitoring, and discloses a water taking and sampling device for an underground water monitoring well, which comprises a sampling pump for extracting a water sample in the underground water monitoring well, a sampling pipe arranged at the upper end of the sampling pump and used for outputting the water sample, and a winding unit arranged at the upper end of the sampling pump and used for winding the sampling pipe. The adjusting device is used for adjusting the position of the sampling pump in the underground water monitoring well; the supporting unit is detachably fixed to the upper end of the underground water monitoring well and used for supporting the winding unit; the protection unit sleeves the sampling pump, is adjustably supported between the sampling pump and the inner wall of the underground water monitoring well, and is used for protecting the sampling pump when the winding unit drives the sampling pump to move downwards in the underground water monitoring well; through the arrangement of the protection unit, the sampling pump is effectively prevented from colliding with the well wall in the downward moving process, the sampling equipment is protected, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental monitoring, and in particular to a groundwater monitoring well water sampling device and method. Background Art

[0002] Groundwater monitoring is essential during geological surveys. Accurately obtaining groundwater samples at different depths is crucial for assessing groundwater quality, studying hydrogeological conditions, and developing appropriate environmental protection measures. Currently, common groundwater sampling methods typically involve placing a sampling pump into a monitoring well or using simple rope-suspended equipment for sampling.

[0003] The existing equipment has the following disadvantages: when the sampling pump is placed into the groundwater well, the sampling pump will swing and shake. Since the diameter of the groundwater well is generally small, the sampling pump is prone to collide with the well wall, causing equipment damage and increasing maintenance costs.

[0004] Therefore, the present application proposes a groundwater monitoring well water sampling device and method to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a groundwater monitoring well water sampling device and method to solve the problem that the above-mentioned sampling pump will swing and shake. Since the diameter of the well body of the groundwater well is generally small, the sampling pump is prone to collide with the well wall, causing equipment damage and increasing maintenance costs.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a groundwater monitoring well water sampling device, comprising a sampling pump for extracting water samples from the inside of the groundwater monitoring well and a sampling tube arranged at the upper end of the sampling pump for outputting water samples, and also comprising: a winding unit, arranged at the upper end of the sampling pump, for adjusting the position of the sampling pump inside the groundwater monitoring well; a supporting unit, detachably fixed to the upper end of the groundwater monitoring well, for supporting the winding unit; a protective unit, sleeved on the sampling pump and adjustably supported between the sampling pump and the inner wall of the groundwater monitoring well, for protecting the sampling pump when the winding unit drives the sampling pump to move downward inside the groundwater monitoring well.

[0007] Among them, the winding unit includes: a winding frame; a winding roller, which is arranged on the winding frame; a handle, which is arranged on one side of the winding roller and fixedly connected to the winding frame by bolts, for driving the winding roller to rotate; a winding rope, which is wound on the winding roller and connected to the sampling pump; and a hanging ring for installing the winding rope is provided at the upper end of the sampling pump.

[0008] Among them, the support unit includes: a fixing component, which is arranged at the top of the groundwater monitoring well; a fixing rod, which is arranged at the upper end of the fixing component; a mounting frame, which is arranged at the upper end of the fixing rod; a wire pulley, which is arranged on the mounting frame and abuts against the winding rope, and is used to support the winding rope.

[0009] Among them, the fixing assembly includes: a fixing frame, which is designed in an inverted U shape and is arranged at the lower end of the fixing rod; a fixing plate, which is arranged on one side of the lower end of the fixing frame; a screw, which is threadedly connected to the side of the fixing frame away from the fixing plate; a movable plate, which is arranged on the side of the screw close to the fixing plate, and is used in conjunction with the fixing plate to fix the fixing frame to the upper end of the groundwater monitoring well; a rotating rod, which is arranged on the side of the screw away from the movable plate, and is used to control the rotation of the screw.

[0010] Among them, the protection unit includes: a fixed ring, which is mounted on the sampling pump and fixedly connected to the sampling pump through fixing bolts; a movable ring, which is mounted on the sampling pump and located below the fixed ring; a support assembly, which can be adjusted between the fixed ring and the movable ring, and is used to support the sampling pump between the sampling pump and the groundwater monitoring well to protect the sampling pump.

[0011] The support assembly includes: a mounting block, which is arranged at an equal angle on the outside of the fixed ring; a rotating plate, which is arranged on the side of the mounting block away from the fixed ring; and a push rod, which is arranged at an equal angle on the outside of the movable ring and is located below the mounting block, and moves with the movable ring to adjust the mounting angle of the rotating plate.

[0012] An abutment member is provided on a side of the rotating plate close to the inner wall of the groundwater monitoring well.

[0013] Among them, the abutment member includes: a mounting plate, which is arranged on the side of the rotating plate away from the fixed ring; a movable rod, which passes through the mounting plate and has a limiting plate on the side close to the fixed ring; a guide wheel, which is arranged on the side of the movable rod close to the inner wall of the groundwater monitoring well; and a first elastic member, which is sleeved on the movable rod and is located between the guide wheel and the mounting plate.

[0014] In which, the protection unit also includes: a traction rope, which is arranged at the upper end of the movable ring and passes upward through the fixed ring; a fixed frame, which is arranged at the lower end of the fixed ring and connected to the traction rope, for fixing the traction rope; an adjustment component, which is arranged at the lower end of the fixed frame and connected to the traction rope, for separating the traction rope from the fixed frame after the sampling pump moves down to a set position; a third elastic member, which is arranged at equal angles between the fixed ring and the movable ring.

[0015] The fixing frame includes: a fixing box, which is arranged at the lower end of the fixing ring; a side plate, which is arranged at the lower end of the fixing box; a bottom plate, which is arranged at the lower end of the side plate; a sleeve rod, which is arranged on the side of the fixing box away from the sampling pump; a sleeve ring is fixed to the lower end of the traction rope, and the sleeve ring is sleeved on the sleeve rod; the adjustment component includes: a lifting rod, which is passed through the bottom plate; a float, which is arranged at the lower end of the lifting rod and is used to push the lifting rod up after the sampling pump contacts the water surface; a mounting shaft, which is arranged inside the fixing box; a gear, which is sleeved on the mounting shaft; a first rack, which is arranged on the lifting rod The upper end of the rod is located on the side of the gear away from the sampling pump, and the first rack is meshed with the gear; the second rack is arranged at the lower end of the gear and is meshed with the gear; the pushing block is arranged on the side of the second rack away from the sampling pump and passes through the fixed box, and moves with the second rack to push the ring away from the sleeve rod; the second elastic member is sleeved on the lifting rod and located between the float and the bottom plate; the interior of the fixed box is provided with a slide rail for supporting the second rack; the lower end of the second rack is provided with a slider slidably connected to the slide rail.

[0016] A method for sampling water from a groundwater monitoring well, using the above-mentioned groundwater monitoring well water sampling device, comprises the following steps:

[0017] 1S. Fix the fixing assembly to the upper end of the groundwater monitoring well, with the support unit located above the groundwater monitoring well. Fix the sampling pump to the lower end of the reeling rope, and then place the reeling rope on the support unit to complete the assembly of the entire sampling device.

[0018] 2S. Insert the protective unit into the sampling pump and fix the fixing ring to the sampling pump with the fixing bolts;

[0019] 3S. Pull the traction rope to drive the movable ring to move upward on the sampling pump. During the upward movement of the movable ring, the rotating plate is driven to rotate, and the rotating plate is driven to expand outward to abut against the inner wall of the groundwater monitoring well, so that the sleeve ring is sleeved on the sleeve rod;

[0020] 4S. After the float contacts the water surface, there will be an upward driving force under the action of buoyancy. The sampling pump continues to move downward, and the float pushes the lifting rod upward. The first rack engages with the gear, driving the gear to rotate clockwise, causing the second rack to move to the side away from the sampling pump, causing the push block to separate the ring from the rod. At this time, the second elastic member drives the movable ring to move downward, causing the rotating plate to reset and shrink to the outside of the sampling pump. Then the winding unit continues to release the winding rope, causing the sampling pump to move down to the set position and then sample the water at the specified depth of the groundwater monitoring well through the sampling tube.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention can automatically adjust the position of the sampling pump in the groundwater monitoring well by setting a winding unit, without manual intervention, thereby improving the sampling efficiency. The precise control of the winding unit enables the sampling pump to accurately reach the specified depth, thereby obtaining groundwater samples at a specific depth, improving the accuracy of the monitoring data. The setting of the protection unit effectively prevents the sampling pump from colliding with the well wall during the downward movement, thereby protecting the sampling equipment and extending the service life of the equipment.

[0023] 2. The first elastic member in the abutment of the present invention is sleeved on the movable rod and is located between the guide wheel and the mounting plate. During the lowering process of the sampling pump, due to the uneven inner wall of the groundwater monitoring well, the first elastic member can fine-tune the distance between the guide wheel and the rotating plate. This design enables the abutment to adapt to well walls of different shapes and roughness, ensuring that the sampling pump maintains a stable position and posture during the lowering or lifting process, reducing shaking and deviation. The rolling contact design of the guide wheel reduces the sliding friction between the well wall, making the sampling pump smoother during the lowering or lifting process, which helps to improve the efficiency of sampling and reduce energy loss and equipment wear caused by friction.

[0024] 3. In the present invention, when the sampling pump contacts the water surface, the float will push the lifting rod upward, and then through the meshing action of the gear and the first rack and the second rack, the pushing block will push the ring away from the rod. At this time, the third elastic member can push the movable ring downward, thereby resetting the support assembly and shrinking it to the outside of the sampling pump and parallel to the sampling pump. This can reduce the resistance of the support assembly when the sampling pump moves downward inside the groundwater monitoring well, making it easier for the sampling pump to dive to the set depth inside the groundwater monitoring well. This automated separation mechanism reduces the need for manual intervention and improves the efficiency of sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present invention;

[0026] Figure 2 It is a schematic structural diagram of an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of a top view of the structure of one embodiment of the present invention;

[0028] Figure 4 This is a schematic side view of the structure of one embodiment of the present invention;

[0029] Figure 5 A schematic cross-sectional view of an embodiment of the present invention;

[0030] Figure 6Schematic diagram of the structure of the winding unit and the supporting unit in one embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure in which a protection unit is supported on the inner wall of a groundwater monitoring well in one embodiment of the present invention;

[0032] Figure 8 This is a structural diagram of a protective unit sleeved on a sampling pump in one embodiment of the present invention;

[0033] Figure 9 This is a schematic structural diagram of a protection unit in one embodiment of the present invention;

[0034] Figure 10 This is a schematic diagram of the structure of the connection between the fixed ring and the movable ring in one embodiment of the present invention;

[0035] Figure 11 This is a schematic diagram of the structure of a protection unit in a top view according to an embodiment of the present invention;

[0036] Figure 12 A schematic structural diagram of an abutment member in one embodiment of the present invention;

[0037] Figure 13 This is a schematic structural diagram of an adjustment component in one embodiment of the present invention;

[0038] Figure 14 Schematic diagram of the structure of a pushing block in one embodiment of the present invention.

[0039] In the figure: 1. Groundwater monitoring well; 11. Protective fence; 2. Winding unit; 21. Winding frame; 22. Winding roller; 23. Handle; 24. Winding rope; 3. Support unit; 31. Mounting frame; 32. Guide wheel; 33. Fixed rod; 4. Fixed assembly; 41. Fixed frame; 42. Fixed plate; 43. Movable plate; 44. Screw; 45. Rotating rod; 5. Protective unit; 51. Lifting ring; 52. Sampling tube; 53. Fixed ring; 531. Fixed bolt; 54. Movable ring; 55. Support assembly; 551. Mounting block; 552. Rotating plate; 553. Push rod; 554. Abutment Parts; 5541, mounting plate; 5542, movable rod; 55421, limit plate; 5543, guide wheel; 5544, first elastic part; 56, traction rope; 561, collar; 57, fixing frame; 571, fixing box; 572, side plate; 573, bottom plate; 574, sleeve rod; 58, adjustment assembly; 581, float; 582, lifting rod; 5821, second elastic part; 583, first rack; 584, gear; 585, mounting shaft; 586, second rack; 587, push block; 5871, slider; 5872, slide rail; 59, third elastic part; 6, sampling pump. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] Example 1

[0042] See also Figure 1-14 The present invention provides a technical solution: a groundwater monitoring well water sampling device, comprising a sampling pump 6 for extracting water samples from a groundwater monitoring well 1 and a sampling tube 52 arranged at the upper end of the sampling pump 6 for outputting water samples, and also comprising: a winding unit 2, arranged at the upper end of the sampling pump 6, for adjusting the position of the sampling pump 6 inside the groundwater monitoring well 1; a supporting unit 3, detachably fixed to the upper end of the groundwater monitoring well 1, for supporting the winding unit 2; a protective unit 5, sleeved on the sampling pump 6 and adjustably supported between the sampling pump 6 and the inner wall of the groundwater monitoring well 1, for protecting the sampling pump 6 when the winding unit 2 drives the sampling pump 6 to move downward inside the groundwater monitoring well 1, and a protective fence 11 is installed around the groundwater monitoring well 1 to protect the groundwater monitoring well 1.

[0043] It should be noted that, when working, the fixing component 4 is fixed to the upper end of the groundwater monitoring well 1, the supporting unit 3 is located above the groundwater monitoring well 1, the sampling pump 6 is fixed to the lower end of the winding unit 2, and then the winding unit 2 is placed on the supporting unit 3 to complete the assembly of the entire sampling device; the protective unit 5 is inserted into the sampling pump 6, and the protective unit 5 is fixed on the sampling pump 6, and the installation position of the protective unit 5 is adjusted so that it is supported between the inner wall of the groundwater monitoring well 1 and the sampling pump 6, and then the winding unit 2 continues to pay out the line, so that the sampling pump 6 moves down to the set depth of the groundwater monitoring well 1, and the groundwater monitoring well 1 is started so that the water source is taken out from the sampling tube 52, and by setting The winding unit 2 can automatically adjust the position of the sampling pump 6 in the groundwater monitoring well 1 without manual intervention, thereby improving the sampling efficiency. The precise control of the winding unit 2 enables the sampling pump 6 to accurately reach the specified depth, thereby obtaining groundwater samples at a specific depth, improving the accuracy of the monitoring data. The setting of the protection unit 5 effectively prevents the sampling pump 6 from colliding with the well wall during the downward movement, protecting the sampling equipment and extending the service life of the equipment. The support unit 3 adopts a detachable fixing method, which is convenient for rapid transfer and installation between different monitoring wells, thereby improving the flexibility and applicability of the equipment. The entire sampling process has a high degree of automation, reduces manual operation, and reduces the safety risks of operators.

[0044] In one embodiment, the winding unit 2 includes: a winding frame 21; a winding roller 22, which is arranged on the winding frame 21; a handle 23, which is arranged on one side of the winding roller 22 and fixedly connected to the winding frame 21 by bolts, and is used to drive the winding roller 22 to rotate; a winding rope 24, which is wound on the winding roller 22 and connected to the sampling pump 6; and a hanging ring 51 for installing the winding rope 24 is provided at the upper end of the sampling pump 6.

[0045] This design, see Figure 1-6 When the sampling pump 6 needs to be moved down to the inside of the groundwater monitoring well 1, the bolt on the handle 23 is unscrewed, and then the restriction of the handle 23 on the winding frame 21 is released, and then the handle 23 is turned to drive the winding roller 22 to rotate, thereby controlling the retraction and extension of the winding rope 24. This manual operation method is simple and intuitive, does not require complex electrical or hydraulic systems, and reduces the difficulty and cost of operation. Scale lines are provided on the winding rope 24, so as to accurately control the position of the sampling pump 6 in the groundwater monitoring well 1, which can meet the needs of sampling at different depths.

[0046] In one embodiment, the support unit 3 includes: a fixing component 4, which is arranged at the top of the groundwater monitoring well 1; a fixing rod 33, which is arranged at the upper end of the fixing component 4; a mounting frame 31, which is arranged at the upper end of the fixing rod 33; a wire wheel 32, which is arranged on the mounting frame 31 and abuts against the winding rope 24, for supporting the winding rope 24.

[0047] This design, see Figure 1-6 The entire support unit 3 is securely mounted on the top of the groundwater monitoring well 1 via the fixing assembly 4, providing a stable support base for subsequent sampling operations. This structural design ensures the stability of the device during the sampling process and reduces sampling errors caused by shaking or offsetting. The setting of the guide wheel 32 effectively supports and guides the reel 24. The reel 24 slides on the guide wheel 32, reducing friction with the wellhead edge or other obstacles, thereby extending the service life of the reel 24 and improving the smoothness of the sampling process. The design of the mounting bracket 31 and the fixing rod 33 allows the guide wheel 32 to be easily installed at an appropriate height and position, making it easier for the operator to reel in and out the reel 24.

[0048] In one embodiment, the fixing assembly 4 includes: a fixing frame 41, which is designed in an inverted U shape and is arranged at the lower end of the fixing rod 33; a fixing plate 42, which is arranged on one side of the lower end of the fixing frame 41; a screw 44, which is threadedly connected to the side of the fixing frame 41 away from the fixing plate 42; a movable plate 43, which is arranged on the side of the screw 44 close to the fixed plate 42, and is used in conjunction with the fixing plate 42 to fix the fixing frame 41 to the upper end of the groundwater monitoring well 1; a rotating rod 45, which is arranged on the side of the screw 44 away from the movable plate 43, and is used to control the rotation of the screw 44.

[0049] This design, see Figure 6 The screw 44 is rotatably connected to the movable plate 43, and the fixed frame 41 is clamped on the upper end of the groundwater monitoring well 1. Then the rotating rod 45 is rotated so that the screw 44 drives the movable plate 43 to move to the side close to the fixed plate 42, thereby making the fixed plate 42 and the movable plate 43 firmly fix the fixed frame 41 to the upper end of the groundwater monitoring well 1. This design ensures a stable connection between the support unit 3 and the monitoring well, providing a solid foundation for subsequent sampling operations. The setting of the rotating rod 45 allows the operator to easily control the rotation of the screw 44, thereby adjusting the position of the movable plate 43, simplifying the installation and disassembly process and improving work efficiency. The threaded connection between the screw 44 and the fixed frame 41 allows the position of the movable plate 43 to be precisely adjusted. This adjustability ensures that the fixed component 4 can fit tightly against the upper end of the groundwater monitoring well 1, avoiding shaking or offset caused by loose installation.

[0050] In one embodiment, the protection unit 5 includes: a fixed ring 53, which is mounted on the sampling pump 6 and fixedly connected to the sampling pump 6 by a fixing bolt 531; a movable ring 54, which is mounted on the sampling pump 6 and is located below the fixed ring 53; and a support assembly 55, which is adjustably arranged between the fixed ring 53 and the movable ring 54, and is used to support the sampling pump 6 between the sampling pump 6 and the groundwater monitoring well 1 to protect the sampling pump 6.

[0051] This design, see Figure 5 ,as well as Figure 7-12 , by sleeved on the sampling pump 6 with the fixed ring 53 and the movable ring 54, and cooperating with the setting of the support assembly 55, the protection unit 5 provides all-round protection for the sampling pump 6. This design effectively prevents the sampling pump 6 from directly colliding with the inner wall of the groundwater monitoring well 1 during the lowering or ascending process, thereby protecting the sampling pump 6 from damage. The adjustable setting of the support assembly 55 between the fixed ring 53 and the movable ring 54 enables the protection unit 5 to adapt to groundwater monitoring wells 1 of different diameters. By adjusting the length or angle of the support assembly 55, it can be ensured that the protection unit 5 fits tightly on the inner wall of the groundwater monitoring well 1, providing the best protection effect. The fixed ring 53 is fixedly connected to the sampling pump 6 by the fixing bolt 531. This connection method is simple and stable, ensuring a tight connection between the protection unit 5 and the sampling pump 6. At the same time, the sleeve design of the movable ring 54 is also convenient for adjustment or replacement as needed.

[0052] Example 2

[0053] In one embodiment, the support assembly 55 includes: a mounting block 551, which is arranged at an equal angle on the outside of the fixed ring 53; a rotating plate 552, which is arranged on the side of the mounting block 551 away from the fixed ring 53; a push rod 553, which is arranged at an equal angle on the outside of the movable ring 54 and is located below the mounting block 551, and moves with the movable ring 54 to adjust the installation angle of the rotating plate 552; and an abutment member 554, which is arranged on the side of the rotating plate 552 close to the inner wall of the groundwater monitoring well 1.

[0054] This design, see Figure 7-9 The rotating plate 552 in the support assembly 55 is connected to the fixed ring 53 through the mounting block 551, and its mounting angle can be adjusted by the linkage of the push rod 553 and the movable ring 54. This design enables the support assembly 55 to be adaptively adjusted according to the inner wall of the groundwater monitoring well 1 of different diameters, ensuring that the abutment 554 can fit tightly on the well wall to provide stable support. The mounting block 551 and the push rod 553 are set at equal angles on the outside of the fixed ring 53 and the movable ring 54. This symmetrical distribution design ensures that the support assembly 55 provides uniform support force around the sampling pump 6, which helps to reduce the shaking and deviation of the sampling pump 6 during the lowering or lifting process, and improves the stability of the operation.

[0055] In one embodiment, the abutment member 554 includes: a mounting plate 5541, which is arranged on the side of the rotating plate 552 away from the fixed ring 53; a movable rod 5542, which passes through the mounting plate 5541 and is provided with a limiting plate 55421 on the side close to the fixed ring 53; a guide wheel 5543, which is arranged on the side of the movable rod 5542 close to the inner wall of the groundwater monitoring well 1; a first elastic member 5544, which is sleeved on the movable rod 5542 and is located between the guide wheel 5543 and the mounting plate 5541, and the first elastic member 5544 is made of a damped spring or elastic pad.

[0056] This design, see Figure 5-12 The first elastic member 5544 in the abutment 554 is sleeved on the movable rod 5542 and is located between the guide wheel 5543 and the mounting plate 5541. During the lowering process of the sampling pump 6, due to the uneven inner wall of the groundwater monitoring well 1, the first elastic member 5544 can fine-tune the distance between the guide wheel 5543 and the rotating plate 552. This design enables the abutment 554 to adapt to well walls of different shapes and roughness, ensuring that the sampling pump 6 maintains a stable position and posture during the lowering or lifting process, reducing shaking and deviation. The rolling contact design of the guide wheel 5543 reduces the sliding friction between the well wall, making the sampling pump 6 smoother during the lowering or lifting process, which helps to improve the efficiency of sampling and reduce energy loss and equipment wear caused by friction.

[0057] Example 3

[0058] In one embodiment, the protection unit 5 also includes: a traction rope 56, which is arranged at the upper end of the movable ring 54 and passes upward through the fixed ring 53; a fixing frame 57, which is arranged at the lower end of the fixed ring 53 and connected to the traction rope 56, for fixing the traction rope 56; an adjustment component 58, which is arranged at the lower end of the fixing frame 57 and connected to the traction rope 56, for separating the traction rope 56 from the fixing frame 57 after the sampling pump 6 moves down to the set position; a third elastic member 59, which is arranged at an equal angle between the fixed ring 53 and the movable ring 54, and the third elastic member 59 is made of a damped spring or elastic pad.

[0059] This design, see Figure 8-11 The setting of the traction rope 56 allows the operator to accurately control the position of the movable ring 54, and then adjust the support angle of the support assembly 55, pull the traction rope 56, so that the movable ring 54 moves up, and the support assembly 55 is supported between the sampling pump 6 and the inner wall of the groundwater monitoring well 1, and then the traction rope 56 is fixed to the fixed frame 57. When the sampling pump 6 moves down to the set position, the adjustment assembly 58 moves to separate the traction rope 56 from the fixed frame 57, and the third elastic member 59 can push the movable ring 54 to move down, thereby resetting the support assembly 55 and shrinking it to the outside of the sampling pump 6 and setting it parallel to the sampling pump 6. This can reduce the resistance of the support assembly 55 when the sampling pump 6 moves down inside the groundwater monitoring well 1, making it easier for the sampling pump 6 to dive to the set depth inside the groundwater monitoring well 1. This design helps to reduce the impact force caused by vibration or collision during the lowering or lifting of the sampling pump 6, and further protect the sampling pump 6 from damage.

[0060] Example 4

[0061] 57, and the bottom plate 573 is provided at the bottom end of the side plate 572; and the sleeve rod 574 is provided on the side of the fixing box 571 away from the sampling pump 6; the lower end of the traction rope 56 is fixed with a sleeve 561, and the sleeve 561 is sleeved on the sleeve rod 574, and the sleeve rod 574 is fixedly connected to the fixing box 571 by bolts, and a plurality of threaded holes are provided at intervals on the outer side of the fixing box 571. By adjusting the position of the sleeve rod 574 on the threaded holes, the installation angle of the rotating plate 552 can be adjusted, so that the abutment 554 can be supported on the inner wall of the groundwater monitoring well 1 of different sizes, thereby meeting the sampling use of groundwater monitoring wells 1 of different diameters; the adjustment component 58 includes: a lifting rod 582, which is passed through the bottom plate 573; and a float 581, which is provided at the lower end of the lifting rod 582, and is used to adjust the sampling angle between the sampling pump 6 and the bottom plate 573. After the water surface is touched, the lifting rod 582 is pushed upward; the mounting shaft 585 is arranged inside the fixed box 571; the gear 584 is sleeved on the mounting shaft 585; the first rack 583 is arranged at the upper end of the lifting rod 582 and is located on the side of the gear 584 away from the sampling pump 6, and the first rack 583 is meshed with the gear 584; the second rack 586 is arranged at the lower end of the gear 584 and is meshed with the gear 584; the pushing block 587 is arranged on the second rack 58 6 is located on one side away from the sampling pump 6 and passes through the fixed box 571, and moves with the second rack 586 to push the ring 561 away from the sleeve rod 574; the second elastic member 5821 is sleeved on the lifting rod 582 and is located between the float 581 and the bottom plate 573; the interior of the fixed box 571 is provided with a slide rail 5872 for supporting the second rack 586; the lower end of the second rack 586 is provided with a slider 5871 slidably connected to the slide rail 5872.

[0062] This design, see Figure 8-14The sleeve rod 574 in the fixing frame 57 is fixedly connected to the fixing box 571 by bolts, and a plurality of threaded holes are provided at intervals on the outside of the fixing box 571. This design allows the operator to flexibly adjust the position of the sleeve rod 574 according to the diameter of the groundwater monitoring well 1, and then adjust the installation angle of the rotating plate 552, which enables the abutment member 554 to fit tightly on the inner wall of monitoring wells of different sizes, thereby improving the versatility and adaptability of the device. The float 581, lifting rod 582, gear 584, first rack 583, second rack 586 and push block 587 in the adjustment assembly 58 together constitute an automatic separation mechanism. When the sampling pump 6 contacts the water surface, the float 581 will push the lifting rod 582 upward, and then through the meshing action of the gear 584 and the first rack 583 and the second rack 586, the push block 587 will push the ring 561 away from the sleeve rod 574. At this time, the third elastic member 59 can push The movable ring 54 moves downward, thereby resetting the support assembly 55 and shrinking it to the outside of the sampling pump 6 and parallel to the sampling pump 6. This can reduce the resistance of the support assembly 55 when the sampling pump 6 moves downward inside the groundwater monitoring well 1, making it easier for the sampling pump 6 to dive to the set depth inside the groundwater monitoring well 1. This automated separation mechanism reduces the need for manual intervention and improves the efficiency of sampling. The setting of the slide rail 5872 and the slider 5871 ensures the stability and accuracy of the second rack 586 during movement. These designs together ensure the reliable operation of the adjustment assembly 58 and reduce sampling interruptions or errors caused by mechanical failures. The adjustment assembly 58 automatically separates the traction rope 56 from the fixed bracket 57 after the sampling pump 6 reaches the set position, avoiding equipment damage or safety accidents caused by human operational errors. At the same time, the design of the float 581 also ensures that the separation mechanism can be triggered in time when it contacts the water surface, thereby improving the safety of operation.

[0063] A method for sampling water from a groundwater monitoring well, using the above-mentioned groundwater monitoring well water sampling device, comprises the following steps:

[0064] S1. Fix the fixing assembly 4 to the upper end of the groundwater monitoring well 1, position the support unit 3 above the groundwater monitoring well 1, fix the sampling pump 6 to the lower end of the winding rope 24, and then place the winding rope 24 on the support unit 3 to complete the assembly of the entire sampling device;

[0065] S2. Insert the protection unit 5 into the sampling pump 6 and fix the fixing ring 53 to the sampling pump 6 with the fixing bolts 531;

[0066] S3. Pull the traction rope 56 to drive the movable ring 54 to move upward on the sampling pump 6. During the upward movement of the movable ring 54, the rotating plate 552 is pushed to rotate and push the rotating plate 552 to expand outward and abut against the inner wall of the groundwater monitoring well 1, so that the ring 561 is sleeved on the sleeve rod 574;

[0067] S4. After the float 581 contacts the water surface, there will be an upward driving force under the action of buoyancy, and the sampling pump 6 continues to move downward. The float 581 pushes the lifting rod 582 upward, and the first rack 583 engages with the gear 584, driving the gear 584 to rotate clockwise, causing the second rack 586 to move to the side away from the sampling pump 6, so that the pushing block 587 disengages the ring 561 from the sleeve rod 574. At this time, the second elastic member 5821 drives the movable ring 54 to move downward so that the rotating plate 552 is reset and shrinks to the outside of the sampling pump 6. Then the winding unit 2 continues to release the winding rope 24, so that the sampling pump 6 moves down to the set position and samples the water at the specified depth of the groundwater monitoring well 1 through the sampling tube 52.

[0068] In addition, if there are descriptions of "first," "second," etc. in the embodiments, such descriptions are for descriptive purposes only and should not be understood as indicating or implying the relative importance of the description or implicitly indicating the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features.

Claims

1. A groundwater monitoring well water sampling device, comprising a sampling pump (6) for extracting water samples from a groundwater monitoring well (1) and a sampling tube (52) arranged at the upper end of the sampling pump (6) for outputting the water samples, characterized in that: Also includes: A winding unit (2) is provided at the upper end of the sampling pump (6) and is used to adjust the position of the sampling pump (6) inside the groundwater monitoring well (1); A support unit (3) is detachably fixed to the upper end of the groundwater monitoring well (1) and is used to support the winding unit (2); A protection unit (5) is sleeved on the sampling pump (6) and is adjustably supported between the sampling pump (6) and the inner wall of the groundwater monitoring well (1), and is used to protect the sampling pump (6) when the winding unit (2) drives the sampling pump (6) to move downward inside the groundwater monitoring well (1).

2. A groundwater monitoring well water sampling device according to claim 1, characterized in that: The winding unit (2) comprises: Winding frame (21); A winding roller (22) is arranged on the winding frame (21); A handle (23) is provided on one side of the winding roller (22) and is fixedly connected to the winding frame (21) via bolts, and is used to drive the winding roller (22) to rotate; a winding rope (24) wound on the winding roller (22) and connected to the sampling pump (6); The upper end of the sampling pump (6) is provided with a hanging ring (51) for installing the winding rope (24).

3. A groundwater monitoring well water sampling device according to claim 2, characterized in that: The support unit (3) comprises: A fixed assembly (4) is arranged on the top of the groundwater monitoring well (1); A fixing rod (33) is provided at the upper end of the fixing assembly (4); A mounting frame (31) is provided at the upper end of the fixing rod (33); A guide wheel (32) is arranged on the mounting frame (31) and abuts against the winding rope (24) for supporting the winding rope (24).

4. A groundwater monitoring well water sampling device according to claim 3, characterized in that: The fixing assembly (4) comprises: A fixing frame (41) is designed in an inverted U shape and is arranged at the lower end of the fixing rod (33); A fixing plate (42) is arranged on one side of the lower end of the fixing frame (41); a screw (44) threadedly connected to a side of the fixing frame (41) away from the fixing plate (42); A movable plate (43) is provided on a side of the screw rod (44) close to the fixed plate (42) and is used in conjunction with the fixed plate (42) to fix the fixed frame (41) to the upper end of the groundwater monitoring well (1); A rotating rod (45) is provided on a side of the screw rod (44) away from the movable plate (43) and is used to control the rotation of the screw rod (44).

5. The groundwater monitoring well water sampling device according to claim 1, characterized in that: The protection unit (5) comprises: A fixing ring (53) is sleeved on the sampling pump (6) and fixedly connected to the sampling pump (6) via fixing bolts (531); A movable ring (54) is sleeved on the sampling pump (6) and is located below the fixed ring (53); A support assembly (55) is adjustably arranged between the fixed ring (53) and the movable ring (54) and is used to support the sampling pump (6) between the sampling pump (6) and the groundwater monitoring well (1) to protect the sampling pump (6).

6. A groundwater monitoring well water sampling device according to claim 5, characterized in that: The support assembly (55) comprises: A mounting block (551) is arranged at an equal angle on the outside of the fixing ring (53); a rotating plate (552) disposed on a side of the mounting block (551) away from the fixing ring (53); A push rod (553) is arranged at an equal angle on the outside of the movable ring (54) and below the mounting block (551), and moves together with the movable ring (54) to adjust the mounting angle of the rotating plate (552); The abutment member (554) is provided on a side of the rotating plate (552) close to the inner wall of the groundwater monitoring well (1).

7. A groundwater monitoring well water sampling device according to claim 6, characterized in that: The abutment member (554) includes: A mounting plate (5541) is provided on a side of the rotating plate (552) away from the fixing ring (53); A movable rod (5542) is provided on the mounting plate (5541) and a limiting plate (55421) is provided on a side close to the fixing ring (53); A guide wheel (5543) is arranged on a side of the movable rod (5542) close to the inner wall of the groundwater monitoring well (1); The first elastic member (5544) is sleeved on the movable rod (5542) and is located between the guide wheel (5543) and the mounting plate (5541).

8. The groundwater monitoring well water sampling device according to claim 5, characterized in that: The protection unit (5) further comprises: a traction rope (56) disposed at the upper end of the movable ring (54) and passing upward through the fixed ring (53); a fixing frame (57), which is arranged at the lower end of the fixing ring (53) and connected to the traction rope (56), and is used to fix the traction rope (56); an adjusting assembly (58), which is arranged at the lower end of the fixing frame (57) and is connected to the traction rope (56), and is used to separate the traction rope (56) from the fixing frame (57) after the sampling pump (6) moves down to a set position; The third elastic member (59) is arranged at an equal angle between the fixed ring (53) and the movable ring (54).

9. The groundwater monitoring well water sampling device according to claim 8, characterized in that: The fixing frame (57) comprises: A fixed box (571) is provided at the lower end of the fixed ring (53); A side plate (572) is provided at the lower end of the fixed box (571); A bottom plate (573) is provided at the lower end of the side plate (572); a sleeve rod (574) disposed on a side of the fixed box (571) away from the sampling pump (6); A collar (561) is fixed to the lower end of the traction rope (56), and the collar (561) is sleeved on the sleeve rod (574); The adjustment assembly (58) includes: A lifting rod (582) is provided on the bottom plate (573); A float (581) is provided at the lower end of the lifting rod (582) and is used to push the lifting rod (582) upward after the sampling pump (6) contacts the water surface; A mounting shaft (585) is disposed inside the fixed box (571); A gear (584) sleeved on the mounting shaft (585); a first rack (583) disposed at the upper end of the lifting rod (582) and located on a side of the gear (584) away from the sampling pump (6), the first rack (583) being meshedly connected with the gear (584); a second rack (586), disposed at the lower end of the gear (584) and meshingly connected to the gear (584); a pushing block (587), which is arranged on a side of the second rack (586) away from the sampling pump (6) and passes through the fixed box (571), and moves together with the second rack (586) to push the collar (561) away from the sleeve rod (574); a second elastic member (5821) which is sleeved on the lifting rod (582) and located between the floating ball (581) and the bottom plate (573); A slide rail (5872) for supporting the second rack (586) is provided inside the fixed box (571); A slider (5871) is provided at the lower end of the second rack (586) and is slidably connected to the slide rail (5872).

10. A method for sampling water from a groundwater monitoring well, using a groundwater monitoring well water sampling device according to any one of claims 1 to 9, characterized in that: The following steps are included: S1. Fix the fixing assembly (4) to the upper end of the groundwater monitoring well (1), the support unit (3) is located above the groundwater monitoring well (1), the sampling pump (6) is fixed to the lower end of the winding rope (24), and then the winding rope (24) is placed on the support unit (3), thereby completing the assembly of the entire sampling device; S2. Insert the protective unit (5) into the sampling pump (6), and fix the fixing ring (53) to the sampling pump (6) via the fixing bolts (531); S3, pulling the traction rope (56) to drive the movable ring (54) to move upward on the sampling pump (6), and in the process of the movable ring (54) moving upward, the rotating plate (552) is pushed to rotate, and the rotating plate (552) is pushed to expand outward and abut against the inner wall of the groundwater monitoring well (1), so that the sleeve ring (561) is sleeved on the sleeve rod (574); S4. After the float (581) contacts the water surface, there is an upward driving force under the action of buoyancy, and the sampling pump (6) continues to move downward. The float (581) pushes the lifting rod (582) upward, and the first rack (583) engages with the gear (584), driving the gear (584) to rotate clockwise, so that the second rack (586) moves to the side away from the sampling pump (6), so that the pushing block (587) separates the sleeve ring (561) from the sleeve rod (574). At this time, the second elastic member (5821) drives the movable ring (54) to move downward so that the rotating plate (552) is reset and shrinks to the outside of the sampling pump (6). Then the reeling unit (2) continues to release the reeling rope (24), so that the sampling pump (6) moves down to the set position and samples the water at the specified depth of the groundwater monitoring well (1) through the sampling tube (52).

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