一种地下水样品采集装置
By designing a groundwater sampling device that includes an upper sealing part and a lower sealing part, the problem of non-adjustable sampling depth in the existing technology is solved, and flexible stratified sampling and reproducible preservation of samples are realized, which is suitable for groundwater sampling at different depths.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN CENT CHINA GEOLOGICAL SURVEY CENT SOUTH CHINA INNOVATION CENT FOR GEOSCIENCES
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-17
AI Technical Summary
Existing groundwater sampling devices cannot flexibly adjust the sampling depth and have significant limitations in sampling soil pore water or shallow groundwater.
A groundwater sample collection device including a sampler and a collector was designed. The sampler consists of an upper sealing part and a lower sealing part. A locking cavity is formed by a peristaltic pump and a seepage crack, which allows for stratified sampling at any depth. The sample is preserved in a reductive manner by using an anaerobic container.
It enables stratified sampling with flexible adjustment of sampling depth, simplifies the sampling process, reduces costs, and ensures the reproducibility of the samples. It is suitable for groundwater collection at different depths and in different environments.
Smart Images
Figure CN224518237U_ABST
Abstract
Claims
1. A groundwater sample collection device, characterized by, include: The sampler (1) includes a housing (11), an upper sealing part and a lower sealing part. The housing (11) has a sampling cavity (111) inside for placing the upper and lower sealing parts. The housing (11) has several evenly distributed seepage slits (112) on its side. The upper sealing part and the lower sealing part enclose a locking cavity (6) in the sampling cavity (111). The locking cavity (6) communicates with any seepage slit (112). as well as Collector (2), and a peristaltic pump (4) is connected between the collector (2) and the sampler (1). The upper sealing part includes a first pull rod (12) and a first piston plate (122) fixedly connected as one unit, and the first pull rod (12) has a cylindrical cavity (121) inside. The lower sealing part includes a second pull rod (13) and a second piston plate (133) fixedly connected as one piece. The second pull rod (13) passes through and is slidably connected to the cylindrical cavity (121). The upper surface of the second piston plate (133) is provided with a plurality of through holes (1331). The interior of the second pull rod (13) is provided with a suction cavity (131) that communicates with the through holes (1331).
2. A groundwater sample collection device according to claim 1, wherein: The bottom end of the first piston plate (122) is provided with two symmetrical sealing blocks (123), and the bottom ends of the two sealing blocks (123) are connected to a sealing ring plate (124). The second pull rod (13) is sleeved with a circular baffle (132) located inside the outer shell (11). The circular baffle (132) has two fan-shaped channels (1321) running through it vertically. The second piston plate (133) has two symmetrical fan-shaped notches (1332) running through it vertically. The two fan-shaped notches (1332) are adapted to the two sealing blocks (123).
3. A groundwater sampling device according to claim 2, wherein: The collector (2) has a first connector (21) at one end of its housing for connecting the sampler (1), and the peristaltic pump (4) is connected to the second pull rod (13) and the first connector (21).
4. A groundwater sampling device according to claim 3, wherein: The collector (2) is also provided with an anaerobic container (5) on the side of its outer shell. The anaerobic container (5) includes a container one (51), a container two (52) and a container three (53) with different capacities. The collector (2) has several evenly distributed second connectors (22) on its outer shell side. The anaerobic container (5) is connected to the collector (2) through the second connectors (22). The inner diameter and internal structure of container one (51), container two (52) and container three (53) are the same, but their volumes are different.
5. A groundwater sampling device according to claim 4, wherein: The top of the container (51) is provided with an exhaust port (511) with a diameter smaller than its own diameter, and the container (51) is provided with a self-moving piston (512) with the same inner diameter. The bottom of the container (51) is provided with a connecting pipe (513), and the connecting pipe (513) is connected to the second connector (22) through a Luer connector (31).
6. The groundwater sample collection device of claim 1, wherein: The collector (2) has an interconnected pumping chamber (20) and a narrow channel (201) inside. A third pull rod (23) moves through the pumping chamber (20). One end of the third pull rod (23) is fixedly connected to a pumping piston (231) that fits against the inner wall of the pumping chamber (20). The outer surface of the third pull rod (23) has several evenly distributed notches (232).
7. A groundwater sampling device according to claim 6, wherein: The collector (2) has a locking part inside that is movably fitted with the third pull rod (23). The collector (2) has a locking block movable cavity (24) inside. The locking part includes a locking block (241), an L-shaped connecting rod (243) and a spring (242). The locking block (241) is rotatably installed on the inner wall of the locking block movable cavity (24) and is used to engage with the notch (232). The L-shaped connecting rod (243) is movably connected to the outer surface of the locking block (241) and extends to the outside of the collector (2). A groove is also provided on one side of the inclined surface of the locking block movable cavity (24). A spring (242) is fixedly connected between the inner wall of the groove and the outer surface of the locking block (241).
8. A groundwater sampling device according to claim 7, wherein: The locking part also includes a small piston chamber (25) opened on one side of the locking block movable cavity (24). The small piston chamber (25) is interconnected with the narrow channel (201), and a small piston (251) is provided in the small piston chamber (25). The collector (2) also has a connecting rod movable cavity (26) for the L-shaped connecting rod (243) to move through. The connecting rod movable cavity (26) is interconnected with the locking block movable cavity (24), and the other end of the L-shaped connecting rod (243) is fixedly connected to the outer surface of the small piston (251).
9. The groundwater sampling device of claim 2, wherein: The first piston plate (122) is provided with a first rubber ring (125) on its outside, and the second piston plate (133) is provided with a second rubber ring (134) on its outside. The first rubber ring and the second rubber ring are the same size and are in contact with the inner wall of the sampling chamber (111). The two fan-shaped channels (1321) are symmetrical to each other to provide vertical movement space for the two sealing blocks (123).
10. The groundwater sample collection device of claim 1, wherein: The seepage seam (112) is an arc-shaped structure with an arc smaller than the circumference of the outer shell (11). The sampling cavity (111) is interconnected with the interior of the seepage seam (112).