An environmental detection groundwater sampling device

Abstract

The utility model relates to underground water sampling equipment technical field, concretely to an environmental detection underground water sampling equipment, including sampling pipe, the inner chamber sliding joint of sampling pipe has the limit stop, and the both sides swing joint of limit stop have grabbed and clamped, the below of grabbed and clamped is provided with first piston, the top of grabbed and clamped is provided with second piston, and the bottom of second piston is provided with limit slot, this environmental detection underground water sampling equipment, through sectional type pumping structure, carries out layered sampling to independent aquifer, and the cylinder drives grabbed and clamped to pull first piston to go up, and water sample passes through filter head and enters the below of sampling pipe, when the top of grabbed and clamped is pressed against the inside of limit slot, the bottom of grabbed and clamped loosens the clamping of connector, continues to drive second piston to go up, carries out sampling to another layered water sample through second sampling port, avoids the problem that water sample of different depth mixes together or sampling is not accurate.

Description

Technical Field

[0001] This utility model relates to the technical field of groundwater sampling equipment, specifically a groundwater sampling device for environmental monitoring. Background Technology

[0002] Groundwater sampling equipment refers to devices specifically designed for collecting water samples from underground aquifers. These devices are typically designed and selected based on the sampling depth, the type of target pollutant, and specific monitoring requirements to ensure the accuracy and representativeness of the samples.

[0003] A water quality sampling device is disclosed in patent document CN221199047U, relating to the technical field of water quality sampling equipment. This utility model includes a base and a controller. The controller is mounted on the outer side wall of the base, an adjustment component is mounted on the upper side wall of the base, a mounting plate is mounted on the lower side wall of the adjustment component, and a sampling component is mounted on the lower side wall of the mounting plate; sampling...

[0004] The sampling chamber of the component has an electric door installed on its upper side wall, a drain pipe installed on its left side wall, a filter screen installed on the right inner wall of the drain pipe, and a solenoid valve installed on the outer side wall of the drain pipe. A water storage tank is located on the left side wall of the sampling chamber, a T-block is installed on the upper side wall of the water storage tank, a handle is installed on the left side wall of the water storage tank, and a drain pipe is installed on the right side wall of the water storage tank. This prior art allows for the sampling of water at different depths using the sampling component, which is then sealed and stored for more accurate subsequent testing. Adjusting the hydraulic cylinder of the component facilitates its deeper penetration into the water and allows for control over the depth.

[0005] However, there are certain drawbacks. In this water quality sampling device, since the height of the support base is fixed, only the horizontal position of the sampling box can be adjusted, but the depth of the sampling box entering the water cannot be easily adjusted. This limits the sampling device's ability to sample water quality at different depths. Therefore, we propose a groundwater sampling device for environmental monitoring. Utility Model Content

[0006] One technical problem this application aims to solve is that in water sampling devices, because the height of the support base is fixed, only the horizontal position of the sampling box can be adjusted, and the depth of the sampling box entering the water cannot be easily adjusted. This limits the sampling device's ability to sample water at different depths.

[0007] To address the aforementioned technical problems, this application provides a groundwater sampling device for environmental monitoring, comprising a sampling tube, a limiting plate slidably connected to the inner cavity of the sampling tube, grippers movably connected to both sides of the limiting plate, a first piston disposed below the grippers, a second piston disposed at the top of the grippers, and a limiting groove formed at the bottom of the second piston.

[0008] In some embodiments, a filter head is provided at the bottom of the sampling tube, and a first sampling port is connected between the sampling tube and the filter head.

[0009] In some embodiments, the first piston is provided with a connecting head via a connecting rod, and the bottom of the gripper is hook-shaped, with the first piston being engaged with the hook-shaped bottom of the gripper via the connecting head.

[0010] In some embodiments, the inner wall of the sampling tube is provided with grooves at both ends, a baffle is provided below the inner cavity of the sampling tube, the top of the first piston is attached to the bottom of the baffle, and the two ends of the limiting plate are slidably connected inside the grooves.

[0011] In some embodiments, a first reset spring is connected between the grippers, the limiting groove has a trapezoidal structure that is narrow at the top and wide at the bottom, and second reset springs are symmetrically arranged at both ends of the top of the second piston, with the top of the second reset springs fixedly connected to the top of the inner cavity of the sampling tube.

[0012] In some embodiments, a telescopic rod is fixedly connected to the top of the limiting plate, and the telescopic rod passes through the middle of the second piston.

[0013] In some embodiments, a cylinder is provided at the top of the telescopic rod, the cylinder is fixedly connected to one end of the top of the sampling tube, a rope is provided at the other end of the top of the sampling tube, and a second sampling port is provided on the side of the sampling tube.

[0014] This utility model has at least the following beneficial effects:

[0015] 1. This utility model uses a segmented pumping structure to perform stratified sampling of independent aquifers. The cylinder drives the gripper to pull the first piston upward, and the water sample enters the lower part of the sampling tube through the filter head. When the top of the gripper touches the inside of the limiting groove, the bottom of the gripper releases its grip on the connector and continues to drive the second piston upward. The second sampling port is used to sample the water sample from another layer, avoiding the problem of water samples from different depths mixing together or inaccurate sampling.

[0016] 2. This utility model limits the first piston by setting a baffle in the inner cavity of the sampling tube. After the first piston is limited, it will not move with the second piston when it moves upward. The second return spring set on the top of the second piston can maintain the stability of the second piston when it is driven upward by the gripper under its own elastic force. Due to the structure of the limiting groove being narrow at the top and wide at the bottom, the distance between the top of the gripper and the inside of the limiting groove gradually decreases, releasing the clamping effect on the connector set on the top of the first piston, and performing batch sampling operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 This is a partial structural diagram of the present invention;

[0020] Figure 4 This is a partial structural cross-sectional view of the present invention;

[0021] Figure 5 This is a schematic diagram of the second embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0023] In the diagram: 1. Sampling tube; 100. First sampling port; 101. Baffle; 102. Slide groove; 2. Filter head; 3. First piston; 4. Connector; 5. Grip; 6. Limiting plate; 7. First return spring; 8. Telescopic rod; 9. Second piston; 900. Limiting groove; 10. Second return spring; 11. Cylinder; 12. Rope; 13. One-way membrane flap; 14. Second sampling port. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figure 1-5 This utility model provides a technical solution: a groundwater sampling device for environmental monitoring, including a sampling tube 1, a limiting plate 6 slidably connected to the inner cavity of the sampling tube 1, grippers 5 movably connected to both sides of the limiting plate 6, a first piston 3 arranged below the grippers 5, a second piston 9 arranged at the top of the grippers 5, and a limiting groove 900 opened at the bottom of the second piston 9. The lower cavity of the sampling tube 1 can directionally collect bottom water samples to avoid interference from light components, and the upper cavity is specifically for capturing water samples near the water surface. After the first piston 3 rises, the cavity formed between its bottom and the sampling tube 1 can sample deep water sources. When the grippers 5 are squeezed by the limiting groove 900 and release their gripping effect on the connector 4 arranged at the top of the first piston 3, the second piston 9 continues to rise through the limiting groove 900 to sample water sources near the water surface.

[0026] Please see Figure 2 , 5The first piston 3 is connected to a connecting rod with a connector 4. The bottom of the gripper 5 is hook-shaped. The first piston 3 is engaged with the hook-shaped bottom of the gripper 5 through the connector 4. The bottom of the sampling tube 1 is equipped with a filter head 2. The sampling tube 1 and the filter head 2 are connected by a first sampling port 100. When the cylinder 11 drives the telescopic rod 8 to move upward, the first piston 3 moves upward simultaneously through the connector 4 held at the bottom of the gripper 5. The filter head 2 has water inlet holes around its perimeter, and each water inlet hole is equipped with a filter screen structure to filter impurities contained in the deep water source during sampling. When the first piston 3 moves upward, the volume inside the sampling tube 1 increases, forming a low-pressure area. The external atmospheric pressure forces water into the interior of the first sampling port 100. The filtered water sample enters the inner cavity formed by the sampling tube 1 and the first piston 3 through the first sampling port 100.

[0027] Please see Figure 1-4 The sampling tube 1 has grooves 102 at both ends of its inner wall. A baffle 101 is provided at the bottom of the inner cavity of the sampling tube 1. The top of the first piston 3 is attached to the bottom of the baffle 101. The two ends of the limiting plate 6 are slidably connected to the inside of the groove 102. The baffle 101 is used to limit the first piston 3 after it rises, so as to prevent the first piston 3 from rising along with the second piston 9 while the gripper 5 is driving it to rise. The groove 102 is used to limit the limiting plate 6, so as to prevent the limiting plate 6 from shifting in the inner cavity of the sampling tube 1 while it is rising with the telescopic rod 8.

[0028] Please see Figure 2-5 A first return spring 7 is connected between the grippers 5. The limiting groove 900 has a trapezoidal structure that is narrower at the top and wider at the bottom. Second return springs 10 are symmetrically arranged at both ends of the top of the second piston 9. The top of the second return spring 10 is fixedly connected to the top of the inner cavity of the sampling tube 1. A telescopic rod 8 is fixedly connected to the top of the limiting plate 6. The telescopic rod 8 passes through the middle of the second piston 9. The first return spring 7 is used to apply pressure to both ends when the grippers 5 clamp the connector 4, so that the distance between the two ends of the grippers 5 increases. The bottom hook-shaped structure can clamp the two ends of the connector 4. The second return spring 10 is used to apply pressure to both ends when the grippers 5 drive the second piston 9. During the ascent of the second piston 9, the stability of both ends of the second piston 9 is maintained. A cylinder 11 is provided at the top of the telescopic rod 8. The cylinder 11 is fixedly connected to one end of the top of the sampling tube 1. A rope 12 is provided at the other end of the top of the sampling tube 1. A second sampling port 14 is provided on the side of the sampling tube 1. A membrane is provided inside the second sampling port 14. When the first piston 3 rises, the air in the cavity formed by the sampling tube 1 and the second piston 9 is discharged outward. When the first piston 3 touches the bottom of the baffle 101, the membrane is pressed inward by the air pressure along with the water sample into the inner cavity of the sampling tube 1, without blocking the water flow.

[0029] Example 2: Please refer to Figure 6The difference between this embodiment and Embodiment 1 is that this utility model provides a technical solution: a groundwater sampling device for environmental monitoring, including a sampling tube 1, a limiting plate 6 slidably connected to the inner cavity of the sampling tube 1, grippers 5 movably connected to both sides of the limiting plate 6, a first piston 3 disposed below the grippers 5, and a one-way flap 13 disposed at the connection between the first piston 3 and the inner cavity of the sampling tube 1. The one-way flap 13 is used to open under pressure when the water sample flows forward into the inner cavity of the sampling tube 1, and automatically close under the pressure of the water sample and its own weight when flowing in the opposite direction, blocking the backflow and preventing impurities in the near-surface water from flowing back into the deep water sample.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An environmental detection groundwater sampling apparatus comprising a sampling tube (1), characterised in that: The inner cavity of the sampling tube (1) is slidably connected to a limiting plate (6), and the two sides of the limiting plate (6) are movably connected to grippers (5). A first piston (3) is provided below the grippers (5), and a second piston (9) is provided at the top of the grippers (5). A limiting groove (900) is opened at the bottom of the second piston (9).

2. The groundwater sampling apparatus for environmental detection according to claim 1, characterized by: The bottom of the sampling tube (1) is provided with a filter head (2), and a first sampling port (100) is connected between the sampling tube (1) and the filter head (2).

3. The groundwater sampling apparatus for environmental detection according to claim 1, characterized in that: The first piston (3) is provided with a connecting head (4) through the connecting rod, and the bottom of the gripper (5) is hook-shaped. The first piston (3) is engaged with the hook-shaped bottom of the gripper (5) through the connecting head (4).

4. The groundwater sampling apparatus for environmental detection according to claim 3, characterized in that: The sampling tube (1) has grooves (102) at both ends of its inner wall. A baffle (101) is provided below the inner cavity of the sampling tube (1). The top of the first piston (3) is attached to the bottom of the baffle (101). The two ends of the limiting plate (6) are slidably connected to the inside of the groove (102).

5. The groundwater sampling apparatus for environmental detection according to claim 3, characterized in that: A first reset spring (7) is connected between the grippers (5). The limiting groove (900) has a trapezoidal structure that is narrow at the top and wide at the bottom. The top ends of the second piston (9) are symmetrically provided with second reset springs (10). The top of the second reset spring (10) is fixedly connected to the top of the inner cavity of the sampling tube (1).

6. The groundwater sampling apparatus for environmental detection according to claim 5, characterized in that: The top of the limiting plate (6) is fixedly connected to a telescopic rod (8), which passes through the middle of the second piston (9).

7. The groundwater sampling apparatus for environmental detection according to claim 6, characterized in that: A cylinder (11) is provided at the top of the telescopic rod (8). The cylinder (11) is fixedly connected to one end of the top of the sampling tube (1). A rope (12) is provided at the other end of the top of the sampling tube (1). A second sampling port (14) is provided on the side of the sampling tube (1).

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