Underground water sampler

Abstract

The utility model discloses an underground water sampler, which relates to the technical field of water resource exploration and is used for replacing the existing submersible pump for pumping water and sampling. Comprising a lifting rope, a lifting frame assembly, a bag body assembly and an electric lock pin assembly, the lifting frame assembly is of a frame structure composed of a top plate, a bottom plate and a pull plug, the bag body assembly comprises an air bag, a pressure spring and a guide sliding plate, the top of the air bag is suspended on the top plate through a mounting plate, and the guide sliding plate is fixed to the bottom of the air bag; the guide sliding plate is in sliding fit with the pull plug and mechanically connected with the guide column, the guide column penetrates through the bottom plate and is mechanically connected with the disc at the lower end, and the guide column is provided with a pin hole in lock pin fit with the electric lock pin assembly. Through the design of the bag body assembly and the electric lock pin assembly, the requirements of accurate, fast and stable obtaining are met, the overall structure is compact, and outdoor carrying and using are convenient.

Description

Technical Field

[0001] This utility model relates to the field of water resource exploration technology, and in particular to a groundwater sampler. Background Technology

[0002] Groundwater sampling is a crucial step in hydrogeological and environmental monitoring. Its core objective is to obtain representative water samples to accurately reflect the water quality of the target aquifer. Relevant technical standards include the "Technical Specification for Groundwater Sampling" and the "Technical Specification for Groundwater Environmental Monitoring." Currently, submersible pumps are generally used to sample groundwater in wells or boreholes, i.e., sampling is done by pumping water. This method of extraction causes disturbance to the well water, interfering with the sampling process and making it difficult to meet the requirements of "accurate, rapid, and stable" water sampling. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a groundwater sampler that solves the disturbance problem in existing submersible pump sampling and provides a dedicated water sampling device.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0005] A groundwater sampler includes a hoisting rope, a hoisting frame assembly, a sampler body assembly, and an electric locking pin assembly. The hoisting frame assembly is characterized by a frame structure consisting of a top plate, a bottom plate, and a tie rod. The sampler body assembly includes an air bladder, a compression spring, and a guide plate. The top of the air bladder is suspended from the top plate via a mounting plate. The guide plate is fixed to the bottom of the air bladder. The compression spring is concentrically arranged with the air bladder. The guide plate slides in conjunction with the tie rod. The guide plate is mechanically connected to a guide post. The guide post passes through the bottom plate and is mechanically connected to a disc at its lower end. The guide post has a pin hole for locking with the electric locking pin assembly.

[0006] Furthermore, the electric locking pin assembly includes a waterproof motor, a gear, a gear seat, and a rack pin. The gear seat is fixedly mounted on the base plate, and the gear, rack pin, and waterproof motor are mounted on the gear seat. The gear meshes with the rack pin for transmission, and the waterproof motor drives the gear and rack pin to move. The rack pin is inserted into the pin hole or pulled out of the pin hole.

[0007] Furthermore, the bolt includes a smooth rod section in the middle and threaded sections at both ends, wherein the smooth rod section slides in conjunction with the guide hole.

[0008] Furthermore, a one-way valve is mechanically installed at the inlet and outlet of the airbag.

[0009] Furthermore, a tee is installed at the inlet and outlet of the airbag, and a one-way valve and a ball valve are installed on the tee. The one-way valve is used for sampling, and the ball valve is used for taking out water samples.

[0010] Furthermore, the one-way valve is located at the top of the airbag.

[0011] Furthermore, the top plate and the bottom plate are circular stainless steel plates, and the top plate and the bottom plate are connected by four sets of tie rods to form a frame structure.

[0012] Furthermore, the guide post is a square post.

[0013] Furthermore, a counterweight is suspended on the hoisting frame assembly.

[0014] The beneficial effects of this utility model are:

[0015] The groundwater sampler technology disclosed in this utility model significantly reduces the overall weight of the device through a lightweight design of the hoisting frame, making it more than two-thirds lighter than a traditional water pump. The design of the capsule assembly and the electric locking pin assembly achieves the requirements of "accurate, fast, and stable sampling," and the overall structure is compact, making it easy to carry and use in the field. Attached Figure Description

[0016] Figure 1 A three-dimensional diagram of this sampler, showing the top view.

[0017] Figure 2 The installation effect of this sampler.

[0018] Figure 3 A three-dimensional diagram of this sampler, showing a view from below.

[0019] Figure 4 This is a cross-sectional view of the sampler.

[0020] Figure 5 for Figure 4 Another state, showing the state after sampling.

[0021] Figure 6 This is a diagram showing the combination of the guide slide and the guide post.

[0022] Figure 7 This is a diagram showing the assembly of the airbag and the mounting plate.

[0023] Figure 8 This is a 3D view of the hoisting frame assembly.

[0024] Figure 9 for Figure 1 Enlarged view of a portion of point A in the middle.

[0025] In the diagram: 10. Lifting rope; 20. Lifting frame assembly; 21. Top plate; 22. Bottom plate; 23. Tie bolt; 231. Limit nut; 24. Lifting ring; 25. Square hole; 30. Airbag assembly; 31. Airbag; 311. One-way valve; 32. Compression spring; 33. Guide slide plate; 331. Guide hole; 34. Mounting plate; 35. Guide column; 351. Pin hole; 36. Disc; 40. Electric locking pin assembly; 41. Waterproof motor; 42. Gear; 43. Gear seat; 44. Rack pin. Detailed Implementation

[0026] Groundwater samplers are submerged in water to collect water samples from wells. (Reference) Figures 1 to 9 As shown, the sampler consists of a hoisting rope 10, a hoisting frame assembly 20, a capsule assembly 30, and an electric locking pin assembly 40. It is lowered into the well water to a preset depth by the hoisting rope 10, and after it has settled, water samples are taken. After the sampling is completed, it is hoisted up to complete the sampling.

[0027] refer to Figure 8 The image shows a lifting frame assembly 20, a lightweight design comprising a top plate 21, a bottom plate 22, and tie rods 23. The top plate 21 and bottom plate 22 are circular stainless steel plates, and four sets of tie rods 23 are used between them to form a frame structure, which features a lightweight design. Lifting rings 24 are provided on both the top plate 21 and bottom plate 22. The lifting rings 24 on the top plate 21 are used to secure the lifting ropes 10, which are used for lifting the lifting frame assembly 20. A circular hole is provided on the top plate 21 for installing the capsule assembly 30. A square hole 25, which serves as a guide hole 331, is provided on the bottom plate 22 for installing guide posts 35.

[0028] Furthermore, the lifting rings 24 on the base plate 22 are used to suspend or fix counterweights, such as plumb bobs (not shown in the figure).

[0029] The airbag assembly 30 includes an airbag 31, a compression spring 32, a guide slide plate 33, and mounting plates 34 located at both ends of the airbag 31. The two ends of the airbag 31 are fixedly connected to the mounting plates 34, for example, by adhesive bonding. Bolts are welded to the mounting plates 34, with the top mounting plate 34 fixedly connected to the top plate 21 via these bolts and nuts. After installation, the airbag assembly is suspended on the top plate 21, and the airbag assembly 30 is located inside the space of the lifting frame assembly 20. The mounting plate 34 at the bottom of the airbag 31 is fixedly connected to the guide slide plate 33, and the guide slide plate 33 has a guide hole 331, which is a round hole and slides in engagement with the aforementioned pull bolt 23. It should be noted that the aforementioned pull bolt 23 includes a smooth rod section in the middle and threaded sections at both ends, with the smooth rod section sliding in engagement with the aforementioned guide hole 331.

[0030] Furthermore, the upper and lower ends of the aforementioned compression spring 32 abut against the mounting plates 34 at the upper and lower positions. In the absence of external force, the initial state of the compression spring 32 causes the airbag 31 to be in a relaxed state. Compressing the mounting plates 34 on both sides compresses the compression spring 32 and the airbag 31, and in the compressed state, the cavity inside the airbag 31 shrinks.

[0031] Furthermore, the airbag 31 described above has an inlet / outlet and a one-way valve 311, which is installed at the inlet / outlet on the top of the airbag 31. Preferably, the one-way valve 311 is located on the top of the airbag 31.

[0032] Furthermore, a tee is first installed outside the aforementioned inlet and outlet, and a check valve 311 and a ball valve are installed on the tee. The check valve 311 is used for sampling, and the ball valve is used to remove water samples.

[0033] Furthermore, a guide post 35 is fixedly installed at the lower end of the aforementioned guide slide plate 33, that is, on the side away from the airbag 31. In this embodiment, the installation method is a flange connection. The guide post 35 is a square column, which is installed downward and passes through the square hole 25 on the base plate 22. A disc 36 is installed at the lowest end of the guide post 35 after it passes through the hole. The installation method is preferably screw fastening. After installation, the disc 36 is the force-bearing position, that is, by pressing down, force is applied to the guide post 35, causing the compression spring 32 and the airbag 31 to compress.

[0034] Furthermore, a pin hole 351 is provided on the aforementioned guide post 35, which is used to cooperate with the electric locking pin assembly 40. The electric locking pin assembly 40 includes a waterproof motor 41, a gear 42, a gear seat 43, and a rack pin 44. The gear seat 43 has a Z-shaped profile and is fixedly mounted on the base plate 22 of the hoisting frame assembly 20. The aforementioned gear 42, rack pin 44, and waterproof motor 41 are mounted on the gear seat 43, and the gear 42 meshes with the rack pin 44 for transmission. The waterproof motor 41 is mechanically connected to the shaft of the gear 42. Driven by the waterproof motor 41, the gear 42 rotates and drives the rack pin 44 to move. The end of the rack pin 44 is aligned with the pin hole 351 of the guide post 35. When the end of the rack pin 44 is inserted into the pin hole 351, the guide post 35 is locked in position. Conversely, when the rack pin 44 disengages from the pin hole 351, the guide post 35 is released from its locked state.

[0035] Furthermore, a limiting nut 231 is provided on the bolt 23. The limiting nut 231 is fixed on the bolt 23 and its function is to limit the spatial limit position of the guide slide plate 33.

[0036] Furthermore, the end of the rack pin 44 is designed as a bevel to facilitate insertion into the pin hole 351.

[0037] Furthermore, the control switch of the aforementioned waterproof motor 41 is located on the ground, and the waterproof motor 41 is remotely controlled using a waterproof cable.

[0038] The method of using this sampler is as follows:

[0039] First, on the ground, the operator manually presses down on the disc 36, compressing the airbag 31 and the spring 32. Once the pin hole 351 on the guide post 35 aligns with the rack pin 44, the electric locking pin assembly 40 is activated, locking the rack pin 44 in place with the guide post 35. Then, the sampler is lowered to a predetermined depth in the well using the hoisting rope 10. This depth can be controlled by the rope length. To accommodate different well depths, a weight can be added as needed. After one hour of rest, the waterproof motor 41 is activated via a ground control switch, causing the rack pin 44 to be pulled out of the pin hole 351. The airbag 31 slowly inflates under the force of the spring 32. During this inflating process, water enters the airbag 31 through the one-way valve 311 at the top, collecting a water sample. After standing still for five minutes, the sampler is taken out using the suspension rope 10, and the water sample in the airbag 31 is taken out at the ground and poured into the sample bottle to complete one sampling.

[0040] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Without departing from the spirit of the present utility model, all modifications and improvements to the present utility model by those skilled in the art should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A groundwater sampler, comprising a hoisting rope (10), a hoisting frame assembly (20), a capsule assembly (30), and an electric locking pin assembly (40), characterized in that: The hoisting frame assembly (20) is a frame structure composed of a top plate (21), a bottom plate (22) and a bolt (23). The bladder assembly (30) includes an air bladder (31), a compression spring (32) and a guide plate (33). The top of the air bladder (31) is suspended from the top plate (21) by a mounting plate (34). The guide plate (33) is fixed to the bottom of the air bladder (31). The compression spring (32) is concentrically arranged with the air bladder (31). The guide plate (33) is slidably engaged with the bolt (23). The guide plate (33) is mechanically connected to a guide post (35). The guide post (35) passes through the bottom plate (22) and is mechanically connected to a disc (36) at its lower end. The guide post (35) has a pin hole (351) for locking engagement with the electric locking pin assembly (40).

2. The groundwater sampler according to claim 1, characterized in that, The electric locking pin assembly (40) includes a waterproof motor (41), a gear (42), a gear seat (43), and a rack pin (44). The gear seat (43) is fixedly mounted on the base plate (22). The gear (42), rack pin (44), and waterproof motor (41) are mounted on the gear seat (43). The gear (42) meshes with the rack pin (44) for transmission. The waterproof motor (41) drives the gear (42) and rack pin (44) to move. The rack pin (44) is inserted into the pin hole (351) or pulled out from the pin hole (351).

3. The groundwater sampler according to claim 1, characterized in that, The pull bolt (23) includes a smooth rod section in the middle and threaded sections at both ends, wherein the smooth rod section slides in conjunction with the guide hole (331).

4. The groundwater sampler according to claim 1, characterized in that, A one-way valve (311) is mechanically installed at the inlet and outlet of the airbag (31).

5. The groundwater sampler according to claim 1, characterized in that, A tee is installed at the inlet and outlet of the airbag (31). A one-way valve (311) and a ball valve are installed on the tee. The one-way valve (311) is used for sampling, and the ball valve is used for taking out water samples.

6. The groundwater sampler according to claim 4 or 5, characterized in that, The one-way valve (311) is located on top of the airbag (31).

7. The groundwater sampler according to claim 1, characterized in that, The top plate (21) and bottom plate (22) are circular stainless steel plates, and the top plate (21) and bottom plate (22) are connected by four sets of bolts (23) to form a frame structure.

8. The groundwater sampler according to claim 1, characterized in that, The guide post (35) is a square post.

9. The groundwater sampler according to claim 1, characterized in that, The lifting frame assembly (20) is equipped with a counterweight.

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