A sampling device for groundwater investigation and monitoring

Abstract

The utility model relates to underground water monitoring technical field discloses a kind of sampling device for underground water investigation monitoring, including support, the top of the support is fixedly connected with positioning disc, the adjacent rotation of the positioning disc is connected with hollow winding column, the outer wall of the hollow winding column is wound with trachea, the outer wall of the hollow winding column is wound with sampling tube near edge, the top of the trachea is connected with air pump, the top of the sampling tube is connected with water pump, the bottom of the trachea is connected with air bag, the bottom of the air bag is fixedly connected with floating block, the outer wall of the floating block is equipped with pumping hole, the bottom of the floating block is fixedly connected with counterweight. In the utility model, by hollow pipe sinking into water, then starting air pump to extract ambient air from trachea into air bag, so that it is full of air expansion, reaches the purpose of adjusting sampling different depth sample, improves sample precision, speeds up sampling efficiency.

Description

Technical Field

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

[0002] Groundwater survey and monitoring sampling devices can be divided into well point samplers, undisturbed samplers, and deep sampling devices. Well point samplers can be further subdivided into Belle tubes, which extract water samples from wells through pumping and manual operation, and pump samplers, which use sampling pumps to extract groundwater and deliver it to sampling containers through pipelines. Undisturbed samplers are divided into piston samplers, which use pistons to avoid disturbing the groundwater environment, and vacuum samplers, which use vacuum pumps to extract groundwater and reduce disturbance. Deep sampling devices can be divided into cable samplers, which are cable-driven and suitable for deep well sampling, and rope samplers, which use ropes to lower the sampler into the deep well.

[0003] A search revealed Chinese Patent Publication No. CN209102440U, which discloses a well-washing and sampling device for groundwater monitoring wells used in site surveys. The device includes a Belle tube with a water collection nozzle installed at its front end; the rear end of the Belle tube is connected to a folding ruler via a flexible connecting rope. With this structure, the water collection nozzle is located at the lower end of the Belle tube. During water sampling, the upper end of the nozzle is inserted into the lower end of the Belle tube, allowing for rapid water collection. While this achieves the goal of rapid groundwater sampling, when sampling from different depths of the same groundwater source, the height can only be adjusted manually by pulling upwards, resulting in reduced sampling efficiency and lower sample accuracy. Furthermore, after sampling, the device cannot be quickly retracted for portability, reducing its practicality. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a sampling device for groundwater investigation and monitoring, aiming to improve the existing groundwater investigation and monitoring sampling devices, which can only be adjusted by manually pulling upwards when sampling samples from different depths of the same groundwater source, resulting in reduced sampling efficiency and low sample accuracy.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a sampling device for groundwater investigation and monitoring, comprising a support, a positioning plate fixedly connected to the top of the support, hollow winding columns rotatably connected between adjacent positioning plates, an air tube wound around the outer wall of the hollow winding column, a sampling tube wound around the outer wall of the hollow winding column near its edge, an air pump connected to the top of the air tube, a water pump connected to the top of the sampling tube, an air bladder connected to the bottom of the air tube, a floating block fixedly connected to the bottom of the air bladder, a water extraction hole opened on the outer wall of the floating block, a counterweight fixedly connected to the bottom of the floating block, a hollow tube provided on the outer wall of the floating block, multiple liquid inlet holes opened on the outer wall of the hollow tube, a filter plate fixedly connected to the inner wall of the liquid inlet holes, and a storage structure fixedly connected to the right side of the positioning plate on the left side, the storage structure being used for quick storage of the entire device.

[0006] Through the above technical solution: the filter plate can prevent larger debris from entering the liquid inlet hole, thus avoiding blockage of the liquid inlet hole and the hollow tube; the floating block can float up and down along the hollow tube under the action of the air bag and the counterweight, thereby aligning the water suction hole and the liquid inlet holes at different heights to collect samples at different depths; the air pump can draw in outside air and let it enter the air bag through the air tube, thereby increasing the buoyancy of itself and the floating block connected to it, so that it can float upward along the hollow tube.

[0007] As a further description of the above technical solution: The storage structure includes a micro motor, the left side of which is fixedly connected to the right side of the positioning disk. A rotating rod is fixedly connected to the output end of the micro motor. A fixing plate is fixedly connected to the middle of the outer wall of the rotating rod. A positioning ring is fixedly connected to the outer wall of the hollow winding column. A storage box is fixedly connected to the bottom of the positioning disk. Multiple hinges are fixedly connected to the front side of the storage box. A rotating block is rotatably connected to the middle of the front side of the storage box. A rotating plate is fixedly connected to the top of the hinges.

[0008] Through the above technical solution: the hinge provides a fulcrum for the rotation of the rotating plate, the rotation of the rotating plate can open the storage box, making it convenient for users to put items inside, the rotating block can limit the rotation of the rotating plate by rotating, and the micro motor can provide power for the whole process.

[0009] As a further description of the above technical solution: A sponge pad is fixedly connected to the inner wall of the storage box, and an anti-slip pad is fixedly connected to the outer wall of the rotating block.

[0010] The above technical solution uses a sponge pad to protect the items stored inside the storage box.

[0011] As a further description of the above technical solution: A controller is fixedly connected to the right side of the positioning plate, and the controller is electrically connected to the water pump and the air pump respectively.

[0012] The above technical solution involves a controller used to control the start and stop of the entire device.

[0013] As a further description of the above technical solution: The two positioning disks are rotatably connected to a rotating shaft on opposite sides, and a rotating handle is fixedly connected to the outer wall of the rotating shaft.

[0014] With the above technical solution, the rotating handle can rotate along the rotating axis, making it convenient for the user to lift the entire device upwards.

[0015] As a further description of the above technical solution: The outer wall of the rotating handle is fixedly connected to an anti-slip sleeve, and the outer wall of the anti-slip sleeve has multiple handrail grooves.

[0016] The above technical solution is to increase the friction of the outer wall of the rotating handle, thereby preventing the user from slipping out of their hand when using the rotating handle.

[0017] As a further description of the above technical solution: Both the water pump and the air pump have an arc-shaped plate on their outer walls. The inner wall of the arc-shaped plate is slidably connected to the outer wall of the water pump and the air pump. Several screws are threadedly connected to the top of the arc-shaped plate near the edge.

[0018] The above technical solution involves screws used to fix the arc-shaped plate in the required position, while the arc-shaped plate can limit the movement of the outer wall of the water pump and air pump.

[0019] As a further description of the above technical solution: The bottom of the bracket is fixedly connected to multiple anti-slip plates, all of which are fixedly connected at the same horizontal height.

[0020] The above technical solution uses an anti-slip plate to increase the friction at the bottom of the support, thereby improving the stability of the entire device.

[0021] This utility model has the following beneficial effects: 1. In this utility model, by submerging the hollow tube in water and then starting the air pump to draw in outside air through the air tube into the airbag, the airbag expands and causes the floating block to float. This allows the water extraction hole to be aligned with different liquid inlet holes. Subsequently, the water pump is started to draw liquid from the water extraction hole into the sampling tube for sampling. This achieves the purpose of adjusting the sampling depth of samples, improving sample accuracy and accelerating sampling efficiency.

[0022] 2. In this utility model, by starting a micro motor to drive the rotating rod to rotate, the fixed plate is driven to rotate, causing the hollow winding column to rotate. The air tube and sampling tube are wound around the left and right sides of the positioning ring. Then, the rotating plate is rotated to place the hollow tube into the storage box. Finally, the rotating plate is closed and the rotating block is rotated to limit its position, thus achieving the purpose of quick storage and improving practicality and portability. Attached Figure Description

[0023] Figure 1 This is a front perspective view of a sampling device for groundwater investigation and monitoring proposed in this utility model; Figure 2 This is a side view of a groundwater survey and monitoring sampling device proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 This is a partial structural breakdown diagram of the airbag in a groundwater sampling device for investigation and monitoring proposed in this utility model. Figure 5 This is a partial structural breakdown diagram of a micro motor in a groundwater sampling device for investigation and monitoring proposed in this utility model. Figure 6 This is a partial structural schematic diagram of a groundwater sampling device for investigation and monitoring proposed in this utility model.

[0024] Legend: 1. Bracket; 2. Storage structure; 201. Micro motor; 202. Rotating rod; 203. Fixing plate; 204. Positioning ring; 205. Hinge; 206. Rotating block; 207. Rotating plate; 208. Storage box; 3. Positioning plate; 4. Air pump; 5. Air tube; 6. Sampling tube; 7. Water pump; 8. Water extraction hole; 9. Filter plate; 10. Liquid inlet hole; 11. Hollow tube; 12. Hollow winding column; 13. Arc plate; 14. Airbag; 15. Floating block; 16. Counterweight; 17. Sponge pad; 18. Anti-slip pad; 19. Anti-slip plate; 20. Handrail groove; 21. Anti-slip sleeve; 22. Rotating handle; 23. Rotating shaft; 24. Controller; 25. Screw. Detailed Implementation

[0025] 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.

[0026] Please see the appendix Figure 1 - Appendix Figure 3 This utility model provides an embodiment of a groundwater sampling device for investigation and monitoring, comprising a support 1, a positioning plate 3 fixedly connected to the top of the support 1, the support 1 being used to support and install the entire structure, hollow winding columns 12 being rotatably connected between adjacent positioning plates 3, an air tube 5 being wound around the outer wall of the hollow winding column 12, and a sampling tube 6 being wound around the outer wall of the hollow winding column 12 near its edge, the hollow winding column 12 being used to house the sampling tube 6 and the air tube 5, an air pump 4 being connected to the top of the air tube 5, a water pump 7 being connected to the top of the sampling tube 6, and an air bladder 14 being connected to the bottom of the air tube 5, the air pump 4 being used to inflate the air bladder 14. A floating block 15 is fixedly connected to the bottom of the airbag 14. A water extraction hole 8 is provided on the outer wall of the floating block 15. The water extraction hole 8 is used to facilitate sampling by the sampling tube 6. A counterweight 16 is fixedly connected to the bottom of the floating block 15. A hollow tube 11 is provided on the outer wall of the floating block 15. Multiple liquid inlet holes 10 are provided on the outer wall of the hollow tube 11. The counterweight 16 is used to help the floating block 15 float up and down. A filter plate 9 is fixedly connected to the inner wall of the liquid inlet hole 10. A storage structure 2 is fixedly connected to the right side of the left positioning plate 3. The storage structure 2 is used to quickly store the entire device. The filter plate 9 is used to prevent large debris from entering the structure and causing blockage.

[0027] Specifically, bracket 1 is used to support positioning plate 3, thereby supporting the installation and fixation of the entire structure. Hollow winding column 12 can rotate to wind sampling tube 6 and air tube 5 around its outer wall for storage. Air pump 4 can inflate air bag 14 through air tube 5, thereby increasing the buoyancy of floating block 15 connected to it, allowing it to slide along hollow tube 11. Liquid inlet hole 10 is used to guide external groundwater into hollow tube 11 and can connect it to water pumping hole 8, thereby guiding groundwater into sampling tube 6. Filter plate 9 can prevent large debris from entering liquid inlet hole 10 and causing blockage to it and the structure inside hollow tube 11.

[0028] Please see the appendix Figure 3 - Appendix Figure 5 The storage structure 2 includes a micro motor 201. The left side of the micro motor 201 is fixedly connected to the right side of the positioning disk 3. A rotating rod 202 is fixedly connected to the output end of the micro motor 201. The micro motor 201 is used to drive the rotation of the entire structure. A fixing plate 203 is fixedly connected to the middle of the outer wall of the rotating rod 202. A positioning ring 204 is fixedly connected to the outer wall of the hollow winding column 12. A storage box 208 is fixedly connected to the bottom of the positioning disk 3. The rotating rod 202 is used to transmit rotation to the fixing plate 203. Multiple hinges 205 are fixedly connected to the front side of the storage box 208. A rotating block 206 is rotatably connected to the middle of the front side of the storage box 208. A rotating plate 207 is fixedly connected to the top of the hinges 205. The hinges 205 are used to facilitate the rotation of the rotating plate 207.

[0029] Specifically, the positioning ring 204 can separate the two sides of the hollow winding column 12 to collect different structures separately. The storage box 208 is used to store the exposed structure of the entire device and protect it. The hinge 205 allows the rotating plate 207 to rotate around it, thereby opening the storage box 208 so that the user can put objects inside. The micro motor 201 can drive the rotating rod 202 to rotate, thereby driving the fixing plate 203 to rotate, so that the hollow winding column 12 fixedly connected to it can rotate to wrap the sampling tube 6 and the air tube 5 around its outer wall.

[0030] Please see the appendix Figure 2 - Appendix Figure 4 An anti-slip sleeve 21 is fixedly connected to the outer wall of the rotating handle 22. The outer wall of the anti-slip sleeve 21 has multiple handrail grooves 20. The anti-slip sleeve 21 is used to increase the friction of the outer wall of the rotating handle 22. A sponge pad 17 is fixedly connected to the inner wall of the storage box 208. An anti-slip pad 18 is fixedly connected to the outer wall of the rotating block 206. A rotating shaft 23 is rotatably connected to the two positioning discs 3 on opposite sides. The sponge pad 17 is used to cushion and protect the items placed in the storage box 208. The rotating handle 22 is fixedly connected to the outer wall of the rotating shaft 23. The rotating shaft 23 is used to connect the other structures that need to rotate. Specifically, the rotating handle 22 is designed to facilitate the user in lifting the entire device for carrying and moving. The armrest groove 20 is designed to facilitate the user in placing their fingers inside, making it easier and more stable to use the rotating handle 22. The anti-slip sleeve 21 increases the friction of the outer wall of the rotating handle 22, preventing the user from slipping out of their hand while using the rotating handle 22. The sponge pad 17 is used to cushion and protect the items placed in the storage box 208.

[0031] Please see the appendix Figure 4 - Appendix Figure 6 The bottom of the bracket 1 is fixedly connected with multiple anti-slip plates 19, which are all fixedly connected at the same horizontal height. The anti-slip plates 19 are used to increase the friction at the bottom of the bracket 1. The outer walls of the water pump 7 and the air pump 4 are provided with arc-shaped plates 13. The inner wall of the arc-shaped plates 13 is slidably connected to the outer walls of the water pump 7 and the air pump 4. The arc-shaped plates 13 are used to limit the water pump 7 and the air pump 4. The top of the arc-shaped plates 13 is threaded with multiple screws 25 near the edge. The right side of the positioning plate 3 is fixedly connected with a controller 24. The controller 24 is electrically connected to the water pump 7 and the air pump 4 respectively. The screws 25 are used to fix the arc-shaped plates 13. Specifically, the arc plate 13 can fit against the outer wall of the water pump 7 and the air pump 4 to limit their movement, while the screw 25 can fix the arc plate 13 in the required position so that the water pump 7 and the air pump 4 can be fixed in the required position. The controller 24 can control the start and stop of the entire structure. The anti-slip plate 19 is used to increase the friction at the bottom of the support 1, thereby improving the friction between the entire device and the ground and ensuring stability during operation.

[0032] Working principle: When groundwater needs to be sampled, the hollow tube 11 is first dropped into the sampling site so that it sinks vertically to the bottom of the water. Then, the water pump 7 is started so that the groundwater can pass through the sampling tube 6 and enter the hollow tube 11 through the bottom inlet hole 10. After being filtered to remove larger impurities, the groundwater enters the hollow tube 11, then enters the floating block 15 through the pumping hole 8, and finally enters the sampling tube 6, where it is extracted by the water pump 7. When it is necessary to adjust the sampling of samples at different water levels, the air pump 4 is started to draw in outside air into the air tube 5, and then into the air bag 14, which gradually fills with air and floats upward, thereby adjusting the alignment of the pumping hole 8 with the different inlet holes 10. When it is necessary to descend, the air in the air bag 14 is simply extracted again, and then, under the action of the counterweight 16, the floating block 15 will gradually descend along the hollow tube 11. After collection is completed, the micro motor 201 is started to drive the rotating rod 202 to rotate, which in turn drives the fixing plate 203 to rotate. This allows the fixing plate 203 to drive the hollow winding column 12 to rotate between the two positioning discs 3, so that the air tube 5 and the sampling tube 6 can be wound around the left and right sides of the positioning ring 204 respectively. After the air tube 5 and the sampling tube 6 are completely wound up, the anti-slip pad 18 is rotated so that the rotating plate 207 can rotate along the hinge 205 to open the storage box 208. After the hollow tube 11 and its internal structure are placed into the storage box 208, the rotating plate 207 is rotated to close. Then, the rotating block 206 is rotated to limit the rotation plate 207, thereby storing the entire device.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sampling device for groundwater investigation and monitoring, comprising a support (1), characterized in that: A positioning plate (3) is fixedly connected to the top of the bracket (1). Hollow winding columns (12) are rotatably connected between adjacent positioning plates (3). An air tube (5) is wound around the outer wall of the hollow winding column (12). A sampling tube (6) is wound around the outer wall of the hollow winding column (12) near the edge. An air pump (4) is connected to the top of the air tube (5). A water pump (7) is connected to the top of the sampling tube (6). An air bladder (14) is connected to the bottom of the air tube (5). The bottom of the air bladder (14) is fixedly connected to... A floating block (15) is attached, and a water extraction hole (8) is provided on the outer wall of the floating block (15). A counterweight block (16) is fixedly connected to the bottom of the floating block (15). A hollow tube (11) is provided on the outer wall of the floating block (15). Multiple liquid inlet holes (10) are provided on the outer wall of the hollow tube (11). A filter plate (9) is fixedly connected to the inner wall of the liquid inlet hole (10). A storage structure (2) is fixedly connected to the right side of the positioning disk (3) on the left side. The storage structure (2) is used to quickly store the entire device.

2. The sampling device for groundwater investigation and monitoring according to claim 1, characterized in that: The storage structure (2) includes a micro motor (201), the left side of which is fixedly connected to the right side of the positioning disk (3), the output end of which is fixedly connected to a rotating rod (202), the middle of the outer wall of the rotating rod (202) is fixedly connected to a fixing plate (203), the outer wall of the hollow winding column (12) is fixedly connected to a positioning ring (204), the bottom of the positioning disk (3) is fixedly connected to a storage box (208), the front side of the storage box (208) is fixedly connected to multiple hinges (205), the middle of the front side of the storage box (208) is rotatably connected to a rotating block (206), and the top of the hinges (205) is fixedly connected to a rotating plate (207).

3. The sampling device for groundwater investigation and monitoring according to claim 2, characterized in that: The inner wall of the storage box (208) is fixedly connected to a sponge pad (17), and the outer wall of the rotating block (206) is fixedly connected to an anti-slip pad (18).

4. The sampling device for groundwater investigation and monitoring according to claim 1, characterized in that: A controller (24) is fixedly connected to the right side of the positioning disk (3), and the controller (24) is electrically connected to the water pump (7) and the air pump (4) respectively.

5. A sampling device for groundwater investigation and monitoring according to claim 1, characterized in that: The two positioning disks (3) are rotatably connected to a rotating shaft (23) on opposite sides, and a rotating handle (22) is fixedly connected to the outer wall of the rotating shaft (23).

6. A sampling device for groundwater investigation and monitoring according to claim 5, characterized in that: The outer wall of the rotating handle (22) is fixedly connected to an anti-slip sleeve (21), and the outer wall of the anti-slip sleeve (21) is provided with multiple handrail grooves (20).

7. A sampling device for groundwater investigation and monitoring according to claim 1, characterized in that: The outer walls of the water pump (7) and the air pump (4) are provided with arc-shaped plates (13). The inner wall of the arc-shaped plates (13) is slidably connected to the outer walls of the water pump (7) and the air pump (4). Multiple screws (25) are threadedly connected to the top of the arc-shaped plates (13) near the edge.

8. A sampling device for groundwater investigation and monitoring according to claim 1, characterized in that: The bottom of the bracket (1) is fixedly connected to multiple anti-slip plates (19), and the multiple anti-slip plates (19) are all fixedly connected at the same horizontal height.

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