Sampling device for groundwater quality detection

Abstract

The utility model discloses the technical field of water quality detection groundwater quality detection is with sampling device, including sampling cylinder, the bottom fixed connection of sampling cylinder has the connecting ring, the outer wall of connecting ring has established the outer thread, the bottom of sampling cylinder is provided with the counterweight base, the top of counterweight base has established the connecting groove, the bottom fixed connection of connecting groove has the sealing rubber, the inner wall of connecting groove has established the inner connecting thread. The device compact structure, portable, very suitable for the groundwater sampling work under the complex environment of field. Secondly, through the ingenious design of counterweight base and sampling cylinder, realize fast, accurate sampling, avoid the waste phenomenon of a large number of groundwater extraction in traditional method. In addition, the introduction of waterproof camera and signal line makes the operator can monitor the sampling process in real time on the ground, ensures the accuracy and safety of sampling.

Description

Technical Field

[0001] This utility model relates to the field of water quality testing technology, specifically a sampling device for groundwater quality testing. Background Technology

[0002] In the current field of environmental protection and water resource management, groundwater quality testing plays a crucial role. With accelerated industrialization and population growth, groundwater pollution has become increasingly severe, becoming a key factor restricting sustainable development. Traditional groundwater sampling methods rely heavily on large-scale pumping equipment to extract groundwater to the surface for testing. However, this method presents numerous inconveniences in field operations, especially when sampling points are located in remote or complex terrain areas, where equipment transportation and installation become major challenges. Furthermore, traditional methods often require the extraction of large quantities of groundwater samples, which is not only time-consuming and labor-intensive but also prone to wasting water resources.

[0003] For example, patent number CN202323430082.7 discloses a groundwater sampler, which mainly extracts groundwater by pumping. However, water quality testing often requires sampling in the field. When sampling, a large amount of groundwater is not needed. If a water pump is used directly, the device is bulky and inconvenient for field use. Furthermore, extracting a large amount of groundwater is wasteful.

[0004] Therefore, it is particularly urgent to develop a portable, efficient and water-saving groundwater sampling device. Utility Model Content

[0005] The purpose of this invention is to provide a sampling device for groundwater quality testing, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sampling device for groundwater quality testing, comprising a sampling cylinder, a connecting ring fixedly connected to the bottom of the sampling cylinder, an external thread on the outer wall of the connecting ring, a counterweight base at the bottom of the sampling cylinder, a connecting groove at the top of the counterweight base, a sealing rubber fixedly connected to the bottom of the connecting groove, an internal connecting thread on the inner wall of the connecting groove, the connecting ring being threadedly connected to the inner wall of the connecting groove, a sampling groove extending through the inner walls of the sampling cylinder and the connecting ring, a lifting rope inserted through the inner wall of the sampling groove, a signal line fixedly connected to one end of the lifting rope, and a soil sampling needle at the bottom of the counterweight base.

[0007] As a further embodiment of this utility model: the top of the counterweight base is provided with a connection hole, and the top of the counterweight base near the connection hole is provided with a signal hole.

[0008] As a further improvement of this utility model: the bottom of the lifting rope is fixedly connected to a connector, and the connector is threadedly connected to the inner wall of the connecting hole.

[0009] As a further improvement of this utility model: a waterproof plug is fixedly connected to the bottom of the signal line, the waterproof plug is inserted into the signal hole, and the connection between the waterproof plug and the signal hole is waterproof and sealed.

[0010] As a further improvement of this utility model, a waterproof camera is embedded and fixedly connected to the outer wall of one side of the counterweight base.

[0011] As a further embodiment of this utility model: the inner wall of the soil sampling needle is provided with a soil sampling hole, the top outer wall of the soil sampling needle is fixedly connected with a connecting flange, the connecting flange is detachably connected to the bottom of the counterweight base, and the bottom of the soil sampling needle is pointed.

[0012] Compared with existing technologies, the advantages of this invention are as follows: the device is compact, lightweight, and portable, making it ideal for groundwater sampling in complex field environments. Secondly, the ingenious design of the counterweight base and sampling tube enables rapid and accurate sampling, avoiding the waste of large amounts of groundwater extracted in traditional methods. Furthermore, the introduction of a waterproof camera and signal cable allows operators to monitor the sampling process in real time from the ground, ensuring accuracy and safety. Finally, the detachable design of the soil sampling needle further enhances the device's flexibility and applicability, meeting sampling needs under different geological conditions. In summary, the groundwater quality testing sampling device of this invention excels in improving sampling efficiency, conserving water resources, and enhancing operational safety. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of the sampling device for groundwater quality testing according to this utility model; Figure 2 This is a schematic diagram of the separation structure of the sampling device for groundwater quality testing according to this utility model; Figure 3 This utility model relates to a sampling device for groundwater quality testing. Figure 2 Enlarged structural diagram at point A; Figure 4 This utility model relates to a sampling device for groundwater quality testing. Figure 2 Enlarged structural diagram at point B; Figure 5 This is an enlarged schematic diagram of the soil sampling needle in the groundwater quality testing sampling device of this utility model.

[0014] In the diagram: 1. Sampling tube; 2. Counterweight base; 3. Sampling groove; 4. Lifting rope; 41. Connector; 5. Soil sampling needle; 51. Connecting flange; 52. Soil sampling hole; 6. Waterproof camera; 7. Connecting ring; 8. Connecting groove; 81. Sealing rubber; 9. Signal line; 91. Waterproof plug; 10. Connecting hole; 11. Signal hole. Detailed Implementation

[0015] 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.

[0016] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0017] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Example 1:

[0020] In practical applications, operators first select a suitable soil sampling needle 5 based on the geological conditions of the sampling site and fix it to the bottom of the counterweight base 2 via the connecting flange 51. Then, the connecting ring 7 at the bottom of the sampling cylinder 1 is threaded into the connecting groove 8 at the top of the counterweight base 2, ensuring the sealing rubber 81 fits tightly to prevent leakage. Next, the lifting rope 4 is inserted into the sampling groove 3 and threaded into the connecting hole 10 at the top of the counterweight base 2 via the connector 41. Simultaneously, the waterproof plug 91 at the bottom of the signal line 9 is inserted into the signal hole 11 to ensure a waterproof seal. Finally, the entire device is slowly lowered into the groundwater well, and the sampling process is monitored in real time via a waterproof camera 6. Once the device reaches the designated depth, the lifting rope 4 is raised to fill the sampling cylinder 1 with groundwater sample, and then the device is lifted out of the ground, completing the sampling operation.

[0021] Example 2:

[0022] In another application scenario, operators found the soil at the sampling site to be relatively soft, worrying that the soil sampling needle 5 might tilt or be damaged during sampling. Therefore, they selected a more robust soil sampling needle 5 and ensured its stability by adjusting the tightness of the connecting flange 51. During device assembly, operators also paid special attention to the connection strength between the lifting rope 4 and the connector 41, as well as the waterproof performance of the signal line 9 and the waterproof plug 91, ensuring that no detachment or leakage would occur during sampling. During sampling, operators used real-time footage transmitted by the waterproof camera 6 to precisely control the descent depth and sampling time of the device, ultimately successfully obtaining a representative groundwater sample.

[0023] In summary: Please refer to Figures 1-5 In this embodiment of the invention, a sampling device for groundwater quality testing includes a sampling cylinder 1. A connecting ring 7 is fixedly connected to the bottom of the sampling cylinder 1. The outer wall of the connecting ring 7 has an external thread. A counterweight base 2 is provided at the bottom of the sampling cylinder 1. A connecting groove 8 is provided at the top of the counterweight base 2. A sealing rubber 81 is fixedly connected to the bottom of the connecting groove 8. An internal connecting thread is provided on the inner wall of the connecting groove 8. The connecting ring 7 is threadedly connected to the inner wall of the connecting groove 8. A sampling groove 3 is provided through the inner walls of the sampling cylinder 1 and the connecting ring 7. A lifting rope 4 is inserted through the inner wall of the sampling groove 3. A signal line 9 is fixedly connected to one end of the lifting rope 4. A soil sampling needle 5 is provided at the bottom of the counterweight base 2. A waterproof camera 6 is embedded and fixedly connected to the outer wall of one side of the counterweight base 2.

[0024] The top of the counterweight base 2 has a connection hole 10, and the top of the counterweight base 2 near the connection hole 10 has a signal hole 11.

[0025] The bottom of the lifting rope 4 is fixedly connected to a connector 41, which is threaded to the inner wall of the connecting hole 10.

[0026] A waterproof plug 91 is fixedly connected to the bottom of the signal line 9. The waterproof plug 91 is inserted into the signal hole 11 and the connection between the waterproof plug 91 and the signal hole 11 is waterproof and sealed.

[0027] The inner wall of the soil sampling needle 5 has a soil sampling hole 52. The top outer wall of the soil sampling needle 5 is fixedly connected to a connecting flange 51. The connecting flange 51 is detachably connected to the bottom of the counterweight base 2. The bottom of the soil sampling needle 5 is pointed.

[0028] The working principle of this invention is as follows: During the sampling process, the counterweight base 2 uses its own weight to quickly sink the entire device into the groundwater layer. Once the device reaches the designated depth, the operator triggers the sampling action by lifting the lifting rope 4. The upward movement of the lifting rope 4 causes the sampling cylinder 1 to move upward relative to the counterweight base 2. Due to the blocking effect of the sealing rubber 81 in the connecting groove 8, the groundwater sample is trapped inside the sampling cylinder 1. Simultaneously, the signal line 9 transmits the real-time image captured by the waterproof camera 6 to the ground monitoring equipment, allowing the operator to accurately monitor the sampling process. After sampling is completed, the operator lifts the entire device out of the ground and obtains the groundwater sample by disassembling the connection between the sampling cylinder 1 and the counterweight base 2. Furthermore, the design of the soil sampling needle 5 allows the device to perform soil sampling when needed, further expanding its application range.

[0029] It should be noted that, in this document, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0030] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A sampling device for groundwater quality testing, comprising a sampling tube (1), characterized in that: The bottom of the sampling cylinder (1) is fixedly connected to a connecting ring (7), the outer wall of the connecting ring (7) is provided with an external thread, the bottom of the sampling cylinder (1) is provided with a counterweight base (2), the top of the counterweight base (2) is provided with a connecting groove (8), the bottom of the connecting groove (8) is fixedly connected with a sealing rubber (81), the inner wall of the connecting groove (8) is provided with an internal connecting thread, the connecting ring (7) is threadedly connected to the inner wall of the connecting groove (8), the inner walls of the sampling cylinder (1) and the connecting ring (7) are jointly provided with a sampling groove (3), the inner wall of the sampling groove (3) is inserted through a lifting rope (4), one end of the lifting rope (4) is fixedly connected with a signal line (9), and the bottom of the counterweight base (2) is provided with a soil sampling needle (5).

2. The sampling device for groundwater quality testing according to claim 1, characterized in that: The counterweight base (2) has a connection hole (10) on its top and a signal hole (11) on the top of the side of the counterweight base (2) near the connection hole (10).

3. The sampling device for groundwater quality testing according to claim 1, characterized in that: The bottom of the lifting rope (4) is fixedly connected to a connector (41), and the connector (41) is threadedly connected to the inner wall of the connecting hole (10).

4. The sampling device for groundwater quality testing according to claim 1, characterized in that: A waterproof plug (91) is fixedly connected to the bottom of the signal line (9). The waterproof plug (91) is inserted into the signal hole (11). The connection between the waterproof plug (91) and the signal hole (11) is waterproof and sealed.

5. The sampling device for groundwater quality testing according to claim 1, characterized in that: A waterproof camera (6) is embedded and fixedly connected to the outer wall of one side of the counterweight base (2).

6. The sampling device for groundwater quality testing according to claim 1, characterized in that: The inner wall of the soil sampling needle (5) is provided with a soil sampling hole (52), and the top outer wall of the soil sampling needle (5) is fixedly connected with a connecting flange (51). The connecting flange (51) is detachably connected to the bottom of the counterweight base (2), and the bottom of the soil sampling needle (5) is set with a pointed tip.

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