Automatic underground water monitoring and sampling device

Abstract

The utility model discloses an automatic monitoring and sampling device for underground water. The automatic monitoring and sampling device comprises a sampling drill pipe, a sealing cover plate and a sampling pump, a water inlet channel is arranged at the bottom of the sampling drill pipe, a containing cavity used for storing a water sample is formed in the sampling drill pipe, and the water inlet channel is communicated with the containing cavity; the sealing cover plate is detachably arranged at the top end of the sampling drill pipe and is used for sealing the end part of the sampling drill pipe; the sampling pump is detachably arranged on the side wall of the sampling drill pipe, a sampling pipe is arranged at a feeding hole of the sampling pump, and the sampling pipe penetrates through the sealing cover plate and extends to the inner bottom surface of the sampling drill pipe. According to the underground water sampling device, underground water is sucked by forming negative pressure in the sampling drill pipe, underground water can be actively collected and sampled when the content of the underground water is not high, the underground water sampling efficiency can be greatly improved, and meanwhile it is guaranteed that the underground water sampling operation is smoothly carried out.

Description

Technical Field

[0001] The utility model relates to the field of environmental monitoring, in particular to an automatic groundwater monitoring and sampling device. Background Art

[0002] Groundwater monitoring is for groundwater monitoring management departments to monitor groundwater levels, water quality and other data within their jurisdiction, so as to timely grasp the dynamic changes and provide long-term protection for groundwater. Groundwater monitoring has multiple functions such as measuring water levels, pore pressure, permeability and water sampling.

[0003] At present, during the groundwater monitoring and sampling process, when the groundwater content is low, the speed at which groundwater infiltrates into the sampler slows down, which prolongs the groundwater sampling time and greatly reduces the groundwater sampling efficiency, resulting in certain defects. Utility Model Content

[0004] The utility model aims to provide a groundwater automatic monitoring sampling device to achieve rapid groundwater sampling and ensure smooth groundwater sampling operation.

[0005] In order to solve the above technical problems, the utility model provides a groundwater automatic monitoring sampling device, including a sampling drill pipe, a sealing cover plate and a sampling pump;

[0006] A water inlet channel is provided at the bottom of the sampling drill pipe, a cavity for storing water samples is provided inside the sampling drill pipe, and the water inlet channel is communicated with the cavity;

[0007] The sealing cover plate is detachably arranged on the top of the sampling drill pipe and seals the end of the sampling drill pipe;

[0008] The sampling pump is detachably arranged on the side wall of the sampling drill pipe, and a sampling tube is arranged at the feeding port of the sampling pump. The sampling tube passes through the sealing cover plate and extends to the inner bottom surface of the sampling drill pipe.

[0009] Furthermore, the bottom end of the sampling drill pipe is configured to be conical, a lower drilling protrusion is provided on the side wall of the sampling drill pipe, and the lower drilling protrusion is configured to be spiral.

[0010] Furthermore, a positioning base is installed on the external thread of the drilling protrusion, and fixed support claws are arranged at both ends of the positioning base. When supported by the fixed support claws, there is a soil clearance between the positioning base and the ground to be sampled.

[0011] Furthermore, a drill handle is provided at the top of the sampling drill pipe.

[0012] Furthermore, a filter screen is arranged in the water inlet channel, and the filter screen is arranged at the outer end of the water inlet channel.

[0013] Furthermore, the water inlet channel is located at the upper part of the bottom surface of the cavity.

[0014] Furthermore, the sealing cover plate is clamped on the top end of the sampling drill pipe, a mounting hole matching the sampling pipe is arranged on the sealing cover plate, and the sampling pipe is sealed and connected to the edge of the mounting hole by a sealant.

[0015] Furthermore, a fixed frame is fixedly provided on the side wall of the sampling drill pipe, and the sampling pump is detachably placed in the fixed frame.

[0016] Furthermore, the output end of the sampling pump is connected with a sampling elbow.

[0017] Compared with the prior art, the utility model has at least the following beneficial effects:

[0018] The utility model absorbs groundwater by forming negative pressure in the sampling drill pipe. It can actively collect and sample groundwater when the groundwater content is not high, which can greatly improve the sampling efficiency of groundwater and ensure the smooth progress of groundwater sampling operation. It has the characteristics of simple structure and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model groundwater automatic monitoring sampling device;

[0020] Figure 2 The present invention is a schematic diagram of the sampling drill pipe structure of the automatic groundwater monitoring and sampling device of the present invention. DETAILED DESCRIPTION

[0021] The following will be described in more detail with reference to the schematic diagram of the present invention, wherein the preferred embodiment of the present invention is shown, and it should be understood that the present invention described herein can be modified by a person skilled in the art, while still achieving the advantageous effects of the present invention. Therefore, the following description should be understood as being widely known to a person skilled in the art, and not as a limitation to the present invention.

[0022] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0023] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides an automatic groundwater monitoring sampling device, including a sampling drill pipe 1, a sealing cover plate 2 and a sampling pump 3.

[0024] Specifically, a water inlet channel 4 is provided at the bottom of the sampling drill pipe 1 , a cavity 5 for storing water samples is provided inside the sampling drill pipe 1 , and the water inlet channel 4 is communicated with the cavity 5 .

[0025] The sealing cover plate 2 is detachably arranged on the top end of the sampling drill pipe 1 and seals the end of the sampling drill pipe 1 .

[0026] The sampling pump 3 is detachably arranged on the side wall of the sampling drill pipe 1 , and a sampling tube 6 is arranged at the feed port of the sampling pump 3 . The sampling tube 6 passes through the sealing cover plate 2 and extends to the inner bottom surface of the sampling drill pipe 1 .

[0027] In this embodiment, when it is necessary to monitor and sample groundwater, the sampling drill pipe 1 is drilled down to a specified depth, and then the sealing cover plate 2 is sealed and installed on the top of the sampling drill pipe 1, while ensuring that the bottom end of the sampling tube 6 is located on the bottom surface of the cavity 5. Finally, the sampling pump 3 is turned on. When the sampling pump 3 is working, the cavity 5 is in a negative pressure state. When the groundwater content is reduced, the groundwater can be quickly sucked into the cavity 5 and sucked out through the sampling tube 6 for sampling, thereby ensuring that the groundwater sampling work is carried out quickly and smoothly.

[0028] Furthermore, the bottom end of the sampling drill pipe 1 is configured to be conical, a drilling protrusion 7 is provided on the side wall of the sampling drill pipe 1, and the drilling protrusion 7 is configured to be spiral, and a drilling handle 11 is provided at the top of the sampling drill pipe 1.

[0029] Specifically, when the sampling drill pipe 1 is drilled down, the sampling drill pipe 1 can be inserted into the ground to be sampled through the conical surface at the bottom end thereof, and then the sampling drill pipe 1 is rotated and the drilling protrusion 7 is used to drill into the specified position of the ground to be sampled, thereby completing the groundwater sampling operation at a specified depth.

[0030] In order to ensure that the sampling drill pipe 1 can vertically enter the ground to be sampled, the outer thread of the lower drill protrusion 7 is installed with a positioning base 8, and fixed support claws 9 are provided at both ends of the positioning base 8. The positioning base 8 is supported by the fixed support claws 9 and there is a soil discharge gap 10 between the positioning base 8 and the ground to be sampled.

[0031] During the drilling process of the sampling drill pipe 1, the operator stands on the positioning base 8 and turns the drilling handle 11. At this time, the sampling drill pipe 1 rotates downward and the sampling drill pipe 1 continuously drills toward the ground to be sampled. During the drilling process of the sampling drill pipe 1, the soil discharged upward along the drilling protrusion 7 is discharged from the soil discharge gap 10, so that the sampling drill pipe 1 can quickly enter the ground to be sampled.

[0032] Furthermore, a filter screen 12 is disposed in the water inlet channel 4 , and the filter screen 12 is disposed at an outer end of the water inlet channel 4 .

[0033] Specifically, when groundwater enters the chamber 5 through the water inlet channel 4 , a filter screen 12 is provided at the outer end of the water inlet channel 4 to prevent debris from clogging the water inlet channel 4 .

[0034] In addition, the water inlet channel 4 is located at the upper part of the bottom surface of the cavity 5. When groundwater enters the cavity 5 from the water inlet channel 4, the groundwater is stored at the bottom of the cavity 5, which is convenient for the sampling tube 6 to suck out the groundwater for sampling.

[0035] Furthermore, the sealing cover plate 2 is clamped on the top of the sampling drill pipe 1, and a mounting hole matching the sampling tube 6 is provided on the sealing cover plate 2, and the sampling tube 6 is sealed and connected to the edge of the mounting hole by a sealant.

[0036] Specifically, a fixed clamp frame 13 is fixedly provided on the side wall of the sampling drill pipe 1 , and the sampling pump 3 is detachably placed in the fixed clamp frame 13 , and a sampling elbow 14 is connected to the output end of the sampling pump 3 .

[0037] When the sampling drill pipe 1 is drilled to the specified depth, the sealing cover plate 2 is inserted into the top of the sampling drill pipe 1 to complete the sealing of the sampling drill pipe 1. At the same time, the inner end of the sampling tube 6 is inserted into the inner bottom surface of the cavity 5, so as to facilitate the suction of the groundwater stored at the bottom of the cavity 5 for sampling. After the installation of the sealing cover plate 2 is completed, the sampling pump 3 is placed in the fixed card frame 13, and the sampling pump 3 can be turned on to discharge the sampled groundwater from the sampling elbow 14.

[0038] It should be noted that the sampling pump 3 can be powered by a mobile power supply or a battery. At the same time, by controlling the sampling cycle of the sampling pump 3, the automatic monitoring and sampling operation of groundwater can be realized. Since the timing start control of the sampling pump 3 belongs to the prior art, the timing start control structure of the sampling pump 3 is not repeated here.

[0039] Compared with the prior art, the utility model has at least the following beneficial effects:

[0040] The utility model absorbs groundwater by forming negative pressure in the sampling drill pipe. It can actively collect and sample groundwater when the groundwater content is not high, which can greatly improve the sampling efficiency of groundwater and ensure the smooth progress of groundwater sampling operation. It has the characteristics of simple structure and convenient operation.

[0041] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A groundwater automatic monitoring sampling device, characterized in that: Including sampling drill pipe, sealing cover plate and sampling pump; A water inlet channel is provided at the bottom of the sampling drill pipe, a cavity for storing water samples is provided inside the sampling drill pipe, and the water inlet channel is communicated with the cavity; The sealing cover plate is detachably arranged on the top of the sampling drill pipe and seals the end of the sampling drill pipe; The sampling pump is detachably arranged on the side wall of the sampling drill pipe, and a sampling tube is arranged at the feeding port of the sampling pump. The sampling tube passes through the sealing cover plate and extends to the inner bottom surface of the sampling drill pipe.

2. The groundwater automatic monitoring sampling device according to claim 1, characterized in that: The bottom end of the sampling drill pipe is arranged in a conical shape, and a lower drilling protrusion is arranged on the side wall of the sampling drill pipe, and the lower drilling protrusion is arranged in a spiral shape.

3. The groundwater automatic monitoring sampling device according to claim 2, characterized in that: The outer thread of the lower drilling protrusion is installed with a positioning base, and fixed support claws are arranged at both ends of the positioning base. When supported by the fixed support claws, there is a soil discharge gap between the positioning base and the ground to be sampled.

4. The groundwater automatic monitoring sampling device according to claim 1, characterized in that: A drill handle is arranged on the top of the sampling drill pipe.

5. The groundwater automatic monitoring sampling device according to claim 1, characterized in that: A filter screen is arranged in the water inlet channel, and the filter screen is arranged at the outer end of the water inlet channel.

6. The groundwater automatic monitoring sampling device according to claim 1, characterized in that: The water inlet channel is located at the upper part of the bottom surface of the cavity.

7. The groundwater automatic monitoring sampling device according to claim 1, characterized in that: The sealing cover plate is clamped on the top of the sampling drill pipe, and a mounting hole matching the sampling pipe is arranged on the sealing cover plate, and the sampling pipe is sealed and connected with the edge of the mounting hole by a sealant.

8. The groundwater automatic monitoring sampling device according to claim 1, characterized in that: A fixed clamping frame is fixedly arranged on the side wall of the sampling drill pipe, and the sampling pump is detachably placed in the fixed clamping frame.

9. The groundwater automatic monitoring sampling device according to claim 1, characterized in that: The output end of the sampling pump is connected with a sampling elbow.

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