Underground water sampling device

Abstract

The utility model is suitable for the technical field of underground water sampling, and provides an underground water sampling device which comprises a bottom plate, a plurality of universal wheels, wherein the plurality of universal wheels are all mounted on the bottom plate; the guide pipe is fixedly mounted on the bottom plate and is used for butt joint of an underground water sampling device and an underground water sampling channel; the portal frame is fixedly mounted on the bottom plate; the two rotary tables are rotationally mounted on the inner walls of the two sides of the portal frame correspondingly; the winding shaft is fixedly mounted between the two rotary discs; the driving motor is fixedly installed on the portal frame, and an output shaft of the driving motor is fixedly connected with the center shaft of any rotating disc; and one end of the traction rope is wound on the winding shaft. The underground water sampling device provided by the scheme is relatively simple and convenient to operate, relatively high in sampling efficiency, simple in structure and convenient to maintain.

Description

Technical Field

[0001] This utility model belongs to the field of groundwater sampling technology, and in particular relates to a groundwater sampling device. Background Technology

[0002] Groundwater refers to water found in the pores of rocks below the ground surface. In a narrower sense, it refers to water in saturated aquifers below the groundwater level. Groundwater is an important component of water resources. Due to its stable quantity and good quality, it is a vital water source for agricultural irrigation, industrial and mining operations, and urban areas. When conducting hydrogeological experiments, such as pumping and injection, appropriate sampling equipment is needed to collect groundwater samples for hydrogeological research.

[0003] Existing groundwater sampling technologies mostly use sample bottles and solenoid valves for sampling. However, the operation of sample bottles and samplers that are connected from top to bottom is frequent and inefficient, and cannot complete the sampling work quickly. Valve maintenance is also frequent, and there are many circuits, pipelines and lifting traction lines, which greatly reduces the success rate and speed of sampling. Utility Model Content

[0004] This utility model provides a groundwater sampling device, which aims to solve the problems mentioned in the background art that the sampling devices currently used are relatively complicated to operate, have many circuits, pipelines and lifting traction lines, have low efficiency and require frequent and complicated maintenance.

[0005] To solve the above problems, this utility model is implemented as follows: a groundwater sampling device, comprising: a base plate; multiple casters, all mounted on the base plate; a guide tube, fixedly mounted on the base plate for connecting the groundwater sampling device to a groundwater sampling channel; a gantry frame, fixedly mounted on the base plate; two turntables, each rotatably mounted on the inner walls of both sides of the gantry frame; a winding shaft, fixedly mounted between the two turntables; a drive motor, fixedly mounted on the gantry frame, the output shaft of the drive motor being fixedly connected to the central axis of any of the turntables; a traction rope, one end of which is wound around the winding shaft; and a sampling mechanism, disposed on the traction rope, for extending into the groundwater to collect samples.

[0006] Preferably, the sampling mechanism includes a movable block, a sampling tube, a connecting rod, a sealing block, an exhaust port, and a limiting mechanism. The movable block is fixedly installed at the other end of the traction rope. The sampling tube is slidably sleeved on the outside of the movable block, and the inner wall of the sampling tube is in sealing contact with the movable block. The connecting rod is fixedly installed at the bottom of the movable block. The sealing block is fixedly installed at the other end of the connecting rod and is located outside the sampling tube. The exhaust port is located on the top side wall of the sampling tube. The limiting mechanism is located on the sampling tube and is used to limit the relative position of the movable block inside the sampling tube.

[0007] Preferably, the limiting mechanism includes a fixed tube, a limiting block, a docking groove, a protrusion, and a counterweight. The fixed tube is fixedly installed on the top of the sampling tube, the limiting block is fixedly installed on the traction rope, the docking groove is formed at the bottom of the limiting block, the inner wall of the docking groove slides in contact with the outer side of the fixed tube, the protrusion is fixedly installed in a ring shape on the outer wall of the fixed tube and is inserted into the groove of the inner wall of the docking groove, the counterweight is slidably disposed in the guide tube, used to separate the protrusion from the groove and drive the sampling tube to take a sample, and the counterweight is sleeved on the traction rope.

[0008] Preferably, a connecting pipe is fixedly installed at the top of the sampling tube to withstand the impact of the counterweight, and the connecting pipe is sleeved outside the fixed tube and the limiting block.

[0009] Preferably, the diameter of the central opening of the counterweight is greater than the maximum diameter of the limiting block, but smaller than the outer diameter of the connecting pipe and the sampling pipe.

[0010] Preferably, the guide tube is provided with two fixing mechanisms for fixing and releasing the counterweight. The fixing mechanism includes a slot, a block, and multiple traction springs. The slot is formed on the side wall of the counterweight. The block is slidably mounted on the guide tube. One end of the block extends into the slot, and the other end is located on the outside of the guide tube. The multiple traction springs are fixedly mounted between the guide tube and the block.

[0011] Preferably, the sealing block is semi-circular, and a sealing gasket is fixedly installed on the sealing block. The sealing gasket is arranged corresponding to the open end of the sampling tube to seal the sampling tube.

[0012] Compared with related technologies, the groundwater sampling device provided by this utility model has the following beneficial effects:

[0013] Compared to existing technologies, the groundwater sampling device provided in this solution achieves rapid lifting and lowering of the sampling mechanism through the design of the drive motor and winding shaft, reducing manual operation and increasing sampling speed. The sealing design between the sampling tube and the movable block, as well as the tight fit between the sealing block and the open end of the sampling tube, effectively prevents groundwater leakage during sampling, ensuring sampling accuracy. The robust design of the gantry, turntable, and winding shaft, along with the introduction of fixing mechanisms and traction springs, enhances the structural stability and reliability of the entire sampling device. The counterweight design allows the sampling tube to descend rapidly and automatically collect samples, simplifying the operation steps and reducing operational difficulty. Multiple casters allow the device to be easily moved to different locations for sampling, improving its convenience and flexibility. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front cross-sectional structure of a groundwater sampling device provided by this utility model;

[0015] Figure 2 for Figure 1 An enlarged structural diagram of part A shown in the figure;

[0016] Figure 3 for Figure 1 The diagram shows an enlarged view of part B.

[0017] Reference numerals: 1. Base plate; 2. Caster wheel; 3. Guide tube; 4. Gantry frame; 5. Turntable; 6. Rewind shaft; 7. Drive motor; 8. Traction rope; 9. Movable block; 10. Sampling tube; 11. Connecting rod; 12. Sealing block; 13. Exhaust port; 14. Fixing tube; 15. Limiting block; 16. Connecting groove; 17. Protrusion; 18. Counterweight block; 19. Connecting tube; 20. Slot; 21. Locking block; 22. Traction spring. Detailed Implementation

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects, not to describe a particular order; the terms "inner," "outer," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention 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, and therefore should not be construed as a limitation of the present invention.

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] This utility model embodiment provides a groundwater sampling device, such as Figure 1-3 As shown, the groundwater sampling device includes: a base plate 1; multiple casters 2, all mounted on the base plate 1; a guide pipe 3, fixedly mounted on the base plate 1, for connecting the groundwater sampling device to the groundwater sampling channel; a gantry frame 4, fixedly mounted on the base plate 1; two turntables 5, rotatably mounted on the inner walls of both sides of the gantry frame 4; a winding shaft 6, fixedly mounted between the two turntables 5; a drive motor 7, fixedly mounted on the gantry frame 4, the output shaft of the drive motor 7 being fixedly connected to the central shaft of any of the turntables 5; a traction rope 8, one end of which is wound around the winding shaft 6; and a sampling mechanism, mounted on the traction rope 8, for extending into the groundwater to collect samples.

[0021] In this embodiment, the base plate 1 serves as the supporting foundation for the entire groundwater sampling device, ensuring the device is stably placed on the ground. This provides a stable support platform. Multiple casters 2 facilitate the movement and positioning of the device in different locations, improving its flexibility and convenience. The guide tube 3 connects the groundwater sampling device to the groundwater sampling channel, ensuring the sampling mechanism can accurately enter the groundwater layer and improving sampling accuracy. The gantry frame 4 serves as a structure supporting and fixing other components, providing a sturdy frame and facilitating the installation and fixing of other components. Two turntables 5 drive the rotation of the winding shaft 6. The rotation of the turntables 5 enables the winding and unwinding of the traction rope 8, thereby controlling the lifting and lowering of the sampling mechanism. The winding shaft 6 winds the traction rope 8, simplifying its management; the rotation of the winding shaft 6 allows for convenient control of the rope's length. The drive motor 7, powered by electricity, enables automatic lifting and lowering of the sampling mechanism, improving sampling efficiency. The traction rope 8 enables remote control and operation of the sampling mechanism, simplifying the sampling process. The sampling mechanism is used to extend into the groundwater to collect samples. It can reach deep into the groundwater layer through lifting and lowering operations to complete the sampling work and is the core functional component of the device.

[0022] In a further preferred embodiment of this utility model, the sampling mechanism includes a movable block 9, a sampling tube 10, a connecting rod 11, a sealing block 12, an exhaust port 13, and a limiting mechanism. The movable block 9 is fixedly installed at the other end of the traction rope 8. The sampling tube 10 is slidably sleeved outside the movable block 9, and the inner wall of the sampling tube 10 is in sealing contact with the movable block 9. The connecting rod 11 is fixedly installed at the bottom of the movable block 9. The sealing block 12 is fixedly installed at the other end of the connecting rod 11 and is disposed outside the sampling tube 10. The exhaust port 13 is opened on the top side wall of the sampling tube 10. The limiting mechanism is disposed on the sampling tube 10 to limit the relative position of the movable block 9 inside the sampling tube 10.

[0023] In this embodiment, the movable block 9 serves as the connection point between the sampling mechanism and the traction rope 8, ensuring that the traction rope 8 can stably drive the sampling mechanism to perform lifting and lowering operations. The sampling tube 10 forms a closed space that can contain groundwater, allowing groundwater samples to be collected when the sampling tube 10 penetrates the groundwater layer. The structure between the sampling tube 10 and the movable block 9 is similar to that of a syringe, creating a low-pressure space that allows groundwater to be extracted into the sampling tube 10. The connecting rod 11 connects the movable block 9 and the sealing block 12, providing structural support and ensuring the stability and integrity of the sampling mechanism. After the sampling tube 10 penetrates the groundwater layer to collect samples, the sealing block 12 prevents groundwater from leaking from the bottom of the sampling tube 10, ensuring the purity of the sample. The vent 13 allows air to be expelled from the sampling tube 10 during sampling, ensuring the smooth movement of the movable block 9 and also helping to maintain a certain pressure balance in the groundwater sample within the sampling tube 10. The limiting mechanism is used to limit the relative position of the movable block 9 within the sampling tube 10, so as to ensure that the sampling tube 10 can be inserted into the groundwater before sampling, thereby ensuring the accuracy and reliability of the sampling.

[0024] In a further preferred embodiment of this utility model, the limiting mechanism includes a fixed tube 14, a limiting block 15, a docking groove 16, a protrusion 17, and a counterweight 18. The fixed tube 14 is fixedly installed on the top of the sampling tube 10, the limiting block 15 is fixedly installed on the traction rope 8, the docking groove 16 is formed at the bottom of the limiting block 15, the inner wall of the docking groove 16 is in sliding contact with the outer side of the fixed tube 14, the protrusion 17 is fixedly installed in a ring shape on the outer wall of the fixed tube 14 and is inserted into the groove of the inner wall of the docking groove 16, the counterweight 18 is slidably disposed in the guide tube 3, used to separate the protrusion 17 from the groove and drive the sampling tube 10 to take samples, and the counterweight 18 is sleeved on the traction rope 8.

[0025] In this embodiment, the fixed tube 14 serves as the main support structure of the limiting mechanism, providing a stable platform that docks with the limiting block 15 for installing and fixing other limiting components. The limiting block 15 cooperates with the fixed tube 14 to restrict the lifting position of the sampling tube 10, ensuring that the bottom of the sampling tube 10 is separated from the sealing block 12 before the sampling device is inserted into the groundwater, and that the movable block 9 is located at the lower end of the sampling tube 10, ensuring that the sampling tube 10 can collect a sufficient amount of sample. The docking groove 16 provides a sliding track, allowing the fixed tube 14 to be embedded in the limiting block 15, ensuring the stability of the structure. When the fixed tube 14 and the limiting block 15 move to a specific position, the protrusion 17 will engage in the groove, thereby locking the position of the sampling tube 10 and preventing accidental movement. When sampling is required, the counterweight 18 can slide down along the guide tube 3 and the traction rope 8 under its own weight or external power, pushing the sampling tube 10 down. This causes the protrusion 17 to disengage from the groove, thereby causing the movable block 9 to rise relatively, drawing groundwater from the open end of the sampling tube 10 until the sealing block 12 is sealed to the opening of the sampling tube 10. The counterweight 18 simplifies the operation steps and helps ensure convenient sampling.

[0026] In a further preferred embodiment of the present invention, a connecting pipe 19 is fixedly installed on the top of the sampling tube 10 to withstand the impact of the counterweight 18, and the connecting pipe 19 is sleeved outside the fixed tube 14 and the limiting block 15.

[0027] In this embodiment, the main function of the connecting pipe 19 is to withstand the impact force of the counterweight 18 during the sampling process and to serve as a connection and support structure between the sampling pipe 10, the fixed pipe 14, and the limiting block 15. When the counterweight 18 slides down the traction rope 8 and impacts the sampling pipe 10, the connecting pipe 19 can effectively disperse and withstand this impact force, preventing damage to the sampling pipe 10 and thus protecting the stability and accuracy of the sampling process. The connecting pipe 19, sleeved on the fixed pipe 14 and the limiting block 15, not only connects the sampling pipe 10 to these components but also provides an additional support structure, enhancing the stability and reliability of the entire sampling mechanism.

[0028] In a further preferred embodiment of the present invention, the diameter of the central opening of the counterweight 18 is greater than the maximum diameter of the limiting block 15, and smaller than the outer diameter of the connecting pipe 19 and the sampling pipe 10.

[0029] In this embodiment, the counterweight 18 can slide smoothly along the traction rope 8 without interfering with the limiting block 15, ensuring smooth operation of the structure. Since the diameter of the central opening of the counterweight 18 is smaller than the outer diameter of the connecting pipe 19 and the sampling pipe 10, the counterweight 18 can push the sampling pipe 10 and the connecting pipe 19 down together during its descent, realizing the sampling function of the sampling pipe 10. The limiting block 15 is designed to work in conjunction with the counterweight 18; the maximum diameter of the limiting block 15 is smaller than the diameter of the central opening of the counterweight 18, ensuring that the counterweight 18 is not obstructed by the limiting block 15 during its descent.

[0030] In a further preferred embodiment of this utility model, two fixing mechanisms are provided on the guide tube 3 for fixing and releasing the counterweight 18. The fixing mechanism includes a slot 20, a block 21, and multiple traction springs 22. The slot 20 is formed on the side wall of the counterweight 18. The block 21 is slidably mounted on the guide tube 3. One end of the block 21 extends into the slot 20, and the other end of the block 21 is located on the outside of the guide tube 3. The multiple traction springs 22 are fixedly mounted between the guide tube 3 and the block 21.

[0031] In this embodiment, the fixing mechanism achieves stable fixing and convenient release of the counterweight 18 on the guide tube 3, ensuring the stability and controllability of the counterweight 18 during the sampling process. The slot 20 is used to cooperate with the locking block 21 to fix the counterweight 18. When the locking block 21 is engaged in the slot 20, the counterweight 18 is fixed at a specific position on the guide tube 3. One end of the locking block 21 extends into the slot 20 for fixing; the other end is located on the outside of the guide tube 3 for easy operation and control. When the locking block 21 is engaged in the slot 20, the traction spring 22 is in a compressed state; when it is necessary to release the counterweight 18, the locking block 21 can be disengaged from the slot 20 through external operation. At this time, the traction spring 22 will release its elastic force, pushing the locking block 21 back to its original position. The design of the slot 20 and the locking block 21 is simple and effective, easy to operate and control. Simultaneously, the introduction of the traction spring 22 provides reliable elastic support for the locking block 21, making the fixing and release process smoother and more stable. The design of the fixing mechanism not only improves the convenience and accuracy of the sampling process, but also enhances the structural stability and reliability of the entire sampling device.

[0032] In a further preferred embodiment of the present invention, the sealing block 12 is configured as a semi-circle, and a sealing gasket is fixedly installed on the sealing block 12. The sealing gasket is configured to correspond to the open end of the sampling tube 10 and is used to seal the sampling tube 10.

[0033] In this embodiment, the sealing block 12 is semi-circular, allowing it to fit more tightly against the open end of the sampling tube 10, thus providing a better seal. The semi-circular shape also helps maintain the stability of the sealing block 12 during sampling, preventing it from falling off or moving, thereby ensuring smooth sampling. The sealing gasket is typically made of a soft and durable material, such as rubber or silicone, to ensure tight contact with the open end of the sampling tube 10. When the sealing block 12 contacts the open end of the sampling tube 10, the sealing gasket compresses and fills any tiny gaps, preventing groundwater from leaking out. The combination of the semi-circular sealing block 12 and the sealing gasket significantly improves the sealing effect of the open end of the sampling tube 10, preventing groundwater leakage during sampling and ensuring the accuracy and integrity of the sampling. The sealing gasket, made of a soft and durable material, can withstand the wear and tear of repeated sampling operations, extending the service life of the sealing block 12.

[0034] In summary, compared with related technologies, the design of the drive motor and winding shaft enables rapid lifting and lowering of the sampling mechanism, reducing manual operation and increasing sampling speed. The sealing design between the sampling tube and the movable block, as well as the tight fit between the sealing block and the opening end of the sampling tube, effectively prevents groundwater leakage during sampling, ensuring sampling accuracy. The robust design of the gantry, turntable, and winding shaft, along with the introduction of fixing mechanisms and traction springs, enhances the structural stability and reliability of the entire sampling device. The counterweight design allows the sampling tube to descend rapidly and automatically collect samples, simplifying the operation steps and reducing operational difficulty. Multiple casters allow the device to be easily moved to different locations for sampling, improving its convenience and flexibility.

[0035] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0036] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A groundwater sampling device, characterized in that, include: Base plate; Multiple casters are provided, and all of the casters are mounted on the base plate. A guide tube, which is fixedly installed on the base plate, is used for connecting the groundwater sampling device to the groundwater sampling channel; The gantry frame is fixedly installed on the base plate; Two turntables are respectively rotatably mounted on the inner walls of both sides of the gantry frame; A take-up shaft is fixedly installed between the two turntables; A drive motor is fixedly mounted on the gantry frame, and the output shaft of the drive motor is fixedly connected to the central shaft of any of the turntables; A traction rope, one end of which is wound around the take-up shaft; A sampling mechanism, which is mounted on the traction rope, is used to extend into the groundwater to collect samples.

2. The groundwater sampling device as described in claim 1, characterized in that, The sampling mechanism includes a movable block, a sampling tube, a connecting rod, a sealing block, an exhaust port, and a limiting mechanism. The movable block is fixedly installed at the other end of the traction rope. The sampling tube is slidably sleeved on the outside of the movable block, and the inner wall of the sampling tube is in sealing contact with the movable block. The connecting rod is fixedly installed at the bottom of the movable block. The sealing block is fixedly installed at the other end of the connecting rod and is located outside the sampling tube. The exhaust port is located on the top side wall of the sampling tube. The limiting mechanism is located on the sampling tube and is used to limit the relative position of the movable block inside the sampling tube.

3. The groundwater sampling device as described in claim 2, characterized in that, The limiting mechanism includes a fixed tube, a limiting block, a docking groove, a protrusion, and a counterweight. The fixed tube is fixedly installed on the top of the sampling tube, the limiting block is fixedly installed on the traction rope, the docking groove is formed at the bottom of the limiting block, and the inner wall of the docking groove slides in contact with the outer side of the fixed tube. The protrusion is fixedly installed in a ring shape on the outer wall of the fixed tube and is inserted into the groove on the inner wall of the docking groove. The counterweight is slidably disposed in the guide tube to separate the protrusion from the groove and drive the sampling tube to take a sample. The counterweight is sleeved on the traction rope.

4. The groundwater sampling device as described in claim 3, characterized in that, A connecting pipe is fixedly installed at the top of the sampling tube to withstand the impact of the counterweight. The connecting pipe is sleeved outside the fixed tube and the limiting block.

5. The groundwater sampling device as described in claim 3, characterized in that, The diameter of the central opening of the counterweight is greater than the maximum diameter of the limiting block, but smaller than the outer diameter of the connecting pipe and the sampling pipe.

6. The groundwater sampling device as described in claim 3, characterized in that, The guide tube is provided with two fixing mechanisms for fixing and releasing the counterweight. The fixing mechanism includes a slot, a block, and multiple traction springs. The slot is formed on the side wall of the counterweight. The block is slidably mounted on the guide tube. One end of the block extends into the slot, and the other end is located on the outside of the guide tube. Multiple traction springs are fixedly mounted between the guide tube and the block.

7. The groundwater sampling device as described in claim 2, characterized in that, The sealing block is semi-circular, and a sealing gasket is fixedly installed on the sealing block. The sealing gasket is positioned corresponding to the open end of the sampling tube to seal the sampling tube.

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