CN218956172U - A sampling device for monitoring the status quo of groundwater environment for environmental impact assessment - Google Patents

Abstract

The utility model relates to a sampling device for monitoring the current situation of an environment-impact evaluation groundwater environment, which comprises a sampling tube, a water pipe and an extraction water pump, and is technically characterized in that: be equipped with concentric rod and concentric rod from top to bottom interval and be equipped with a plurality of cylindrical shutoff blocks in the sampling tube, be equipped with the radial through-hole that corresponds with cylindrical shutoff block on the sampling tube lateral wall, the quantity of raceway equals with the quantity of cylindrical shutoff block, the lower extreme of each raceway is the echelonment and arranges in the sampling tube, the raceway is connected with the axial through-hole interference of cylindrical shutoff block, every raceway upper end utilizes flexible switching pipeline and extraction water pump intercommunication. The device solves the problem that the sampling efficiency of the existing sampling device is low, the groundwater depth multipoint sampling is completed in a short time, the operation is convenient, and the sampling efficiency is high.

Description

A sampling device for monitoring the status quo of groundwater environment for environmental impact assessment

technical field

The utility model relates to the technical field of groundwater monitoring, in particular to a sampling device for environmental impact assessment and groundwater environmental status monitoring.

Background technique

The environmental impact assessment method refers to the methods and systems for analyzing, predicting and evaluating the possible environmental impacts after the implementation of planning and construction projects, proposing countermeasures and measures to prevent or mitigate adverse environmental impacts, and conducting follow-up monitoring. In the national standard "Hydrogeological Terminology", groundwater refers to various forms of gravity water buried below the surface. Groundwater is an important part of water resources. Due to the stable water quantity and good water quality, it is one of the important water sources for agricultural irrigation, industrial mining and cities. Therefore, it is imperative to carry out environmental impact assessment and groundwater environmental status monitoring projects.

In the process of the above-mentioned groundwater monitoring project, the sampling device based on the environmental impact assessment method should sample at multiple points within a set period of time, and then analyze the water environmental pollution according to the collected groundwater samples. The existing sampling device is mainly composed of a sampling pipe, a water delivery pipe connected with the sampling pipe, an extraction water pump connected with the end of the water delivery pipe, and a sampling container connected with the outlet pipeline of the extraction water pump. The sampling position is drilled, and after the underground water layer is drilled, the sampling pipe is lowered, and the lower end of the sampling pipe is used to extract water samples and transport them to the sampling container. There are the following problems in the process of use: after the sampling tube is fixed in place, only water samples in the same horizontal plane can be taken, but surface water is mostly surface water samples, and groundwater pollutants are also highly stratified, and groundwater pollution at different depths The degree of difference is large, so the sampling tube needs to adjust the depth multiple times, only to achieve the purpose of multi-point sampling, resulting in low sampling efficiency.

Contents of the invention

The purpose of this utility model is to provide a sampling device with reasonable structure and reliable use for monitoring the status quo of groundwater environment for environmental impact assessment, to solve the problem of low sampling efficiency of existing sampling devices, and to complete deep multi-point sampling of groundwater in a short time. Easy to operate and high sampling efficiency.

The technical scheme of the utility model is:

A sampling device for monitoring the status quo of the groundwater environment for environmental impact assessment, including a sampling pipe, a water delivery pipe and an extraction water pump. The concentric rod is provided with a plurality of cylindrical plugging blocks at intervals from top to bottom, and radial through holes corresponding to the cylindrical plugging blocks are provided on the side wall of the sampling pipe. The number of blocks is equal, and the lower end of each water pipe is arranged in a ladder shape in the sampling pipe. The uppermost cylindrical block is evenly equipped with axial through holes equal to the number of water pipes and corresponds to the water pipes one by one. The axial through holes on each cylindrical plugging block are reduced by one in turn, until the bottom cylindrical plugging block is provided with an axial through hole, wherein the first water delivery pipe passes through the uppermost cylindrical plugging block The axial through hole of the block extends to the upper surface of the adjacent lower cylindrical blocking block, and the second water pipe passes through the axial through holes of the upper two cylindrical blocking blocks and then extends to the adjacent lower cylinder The upper surface of the cylindrical blocking block, the third water delivery pipe extends to the upper surface of the adjacent lower cylindrical blocking block after passing through the axial through holes of the three cylindrical blocking blocks above, and so on until the last The lower end of the water delivery pipe passes through the axial through holes of all cylindrical plugging blocks in turn and extends to the lower end sealing surface of the sampling pipe. The flexible switching pipeline communicates with the extraction water pump.

In the aforementioned sampling device for environmental impact assessment and groundwater environment status monitoring, a sealing rubber layer is provided on the outer peripheral surface of the cylindrical plugging block, and the sealing rubber layer is in close contact with the inner wall of the sampling pipe to enhance the sealing performance.

In the aforementioned sampling device for environmental impact assessment and groundwater environment status monitoring, the lower end of the sampling pipe is provided with an axial limiting cavity, and the lower end of the concentric rod is inserted into the axial limiting cavity and the axial limiting block is fixed to avoid The axial displacement of the concentric rod is too large.

In the aforementioned sampling device for environmental impact assessment and groundwater environment status monitoring, the upper end of the sampling pipe is provided with a joint and is connected to an intermediate pipeline by the joint to extend the length of the sampling pipe.

In the aforementioned sampling device for environmental impact assessment and groundwater environment status monitoring, a guide block is built in the upper end of the sampling pipe, and guide holes corresponding to each water delivery pipe and concentric rod are provided on the guide block.

In the aforementioned sampling device for environmental impact assessment and groundwater environment status monitoring, a switching valve is provided on the flexible switching pipeline to control the opening and closing of the flexible switching pipeline through the switching valve, so as to extract water samples at different depths by using the extraction pump. .

In the aforementioned sampling device for environmental impact assessment and groundwater environment status monitoring, a filter is provided on the outer wall of the sampling pipe at the position corresponding to the radial through hole to filter out sediment.

The beneficial effects of the utility model are:

Through the design of each cylindrical plugging block and the radial through hole of the sampling tube, deep multi-point sampling of groundwater can be realized without changing the position of the sampling tube, and there is no need to adjust the height of the lower end of the sampling tube, which solves the problem of sampling in existing sampling devices For the problem of low efficiency, the water flow at each sampling point at different depths is transmitted to the ground through a separate water delivery pipe, and the multi-point sampling of groundwater depth is completed in a short period of time, which is convenient to operate and high in sampling efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is A-A direction sectional view among Fig. 1;

Fig. 4 is a schematic structural view of the guide block in Fig. 1;

Fig. 5 is an enlarged view of part B in Fig. 1 .

In the figure: 1. Intermediate pipeline, 2. Joint, 3. Sampling pipe, 4. Water pipe, 5. Cylindrical block, 6. Filter, 7. Radial through hole, 8. Cone-shaped fulcrum, 9. Concentric rod, 10. Guide block, 11. Axial limit cavity, 12. Sealing rubber layer, 13. Axial limit block.

Detailed ways

The utility model is described in detail according to the accompanying drawings.

As shown in Figures 1 to 5, the sampling device used for environmental impact assessment and groundwater environmental status monitoring includes a sampling pipe 3, a water delivery pipe 4 and an extraction water pump (omitted in the figure).

Wherein, the lower end of the sampling tube 3 is a cone-shaped fulcrum 8, and the sampling tube 3 is provided with a concentric rod 9, and the concentric rod 9 is provided with a plurality of cylindrical blocking blocks 5 at intervals from top to bottom. A radial through hole 7 corresponding to the cylindrical block 5 is provided on the side wall of the sampling tube 3 . The number of the water delivery pipes 4 is equal to the number of the cylindrical blocking blocks 5 . The lower end of each water delivery pipe 4 is arranged in a stepped shape in the sampling pipe 3, and the uppermost cylindrical block 5 is evenly provided with axial through holes equal in number to the water delivery pipe 4 and corresponds to the water delivery pipe 4 one by one. The axial through holes on each cylindrical block block 5 are successively reduced by one, until the bottom cylindrical block block 5 is provided with an axial through hole, wherein the first water delivery pipe 4 passes through the uppermost cylinder The axial through hole of the shaped block block 5 extends to the upper surface of the adjacent cylindrical block block 5, and the second water delivery pipe 4 extends after passing through the axial through holes of the two cylindrical block blocks 5 above. To the upper surface of the adjacent lower cylindrical block block 5, the third water delivery pipe 4 extends to the adjacent lower cylindrical block block after passing through the axial through holes of the upper three cylindrical block block blocks 5 5 on the upper surface, and so on, until the lower end of the last water delivery pipe 4 passes through the axial through holes of all cylindrical blocking blocks 5 and extends to the closed surface of the lower end of the sampling pipe 3 . The water delivery pipe 4 is in interference connection with the axial through hole of the cylindrical block block 5, and the upper end of each water delivery pipe 4 communicates with the extraction water pump through a flexible switching pipeline (omitted in the figure).

In this embodiment, the number of water delivery pipes 4 and cylindrical blocking blocks 5 is four respectively, and the sampling pipe 3 is provided with four radial through holes 7 uniformly distributed in the circumferential direction corresponding to each cylindrical blocking block 5 . A sealing rubber layer 12 is provided on the outer peripheral surface of the cylindrical blocking block 5, and the sealing rubber layer 12 is in close contact with the inner wall of the sampling tube 3 to enhance the sealing performance, so that the gap between two adjacent cylindrical blocking blocks 5 The space between the sampling tubes is independent of each other. The lower end of the sampling tube 3 is provided with an axial limiting cavity 11, the lower end of the concentric rod 9 is inserted into the axial limiting cavity 11 and the axial limiting block 13 is fixed to avoid excessive axial displacement of the concentric rod 9.

The upper end of the sampling tube 3 is provided with a joint and the intermediate pipeline 1 is connected with the joint 2 to extend the length of the sampling tube 3 . The upper end of the sampling pipe 3 has a built-in guide block 10, and the guide block 10 is provided with guide holes corresponding to each water delivery pipe 4 and the concentric rod 9. The outer wall of the sampling pipe 3 is provided with a filter screen 6 at a position corresponding to the radial through hole 7 to filter out sediment.

A switching valve is provided on the flexible switching pipeline, so as to control the opening and closing of the flexible switching pipeline through the switching valve, so as to extract water samples of different depths by using the extraction water pump. The number of extraction water pumps can also be multiple, which is equal to the number of water delivery pipes 4 and corresponds one to one, so that the efficiency of extracting water samples is higher.

working principle:

When working, first use the drilling tool to drill holes at the sampling position. After drilling through the groundwater layer, lower the sampling pipe 3, lower the sampling pipe 3 to a predetermined position and use the cone-shaped fulcrum 8 to support it. Connect intermediate line 1 for extension.

After the position of the sampling pipe 3 is fixed, pull the upper end of the concentric rod 9 so that each cylindrical block block 5 is synchronously separated from the position of the radial through hole 7, then the water flow at different depths of the groundwater enters into different positions of the sampling pipe 3, and the pumping is started. The water lifting pump extracts the groundwater into the container on the ground through the flexible switching pipeline and the water delivery pipe 4 to realize sampling.

The embodiments of the present utility model have been described in detail above, but the content described is only a preferred embodiment of the present utility model, and cannot be considered as limiting the implementation scope of the present utility model. All equal changes and improvements made according to the scope of creation of the utility model should still belong to the scope covered by this patent.

Claims (7)

1. A sampling device for environmental impact evaluation groundwater environment current status monitoring, includes sampling tube, raceway and extraction water pump, its characterized in that: the lower end of the sampling tube is a cone-shaped supporting point, a concentric rod is arranged in the sampling tube, a plurality of cylindrical plugging blocks are arranged at intervals from top to bottom, radial through holes corresponding to the cylindrical plugging blocks are arranged on the side wall of the sampling tube, the number of the water pipes is equal to that of the cylindrical plugging blocks, the lower ends of the water pipes are arranged in a stepped mode in the sampling tube, axial through holes equal to the number of the water pipes are uniformly arranged on the uppermost cylindrical plugging block and correspond to the water pipes one by one, the axial through holes on the lower cylindrical plugging blocks are sequentially reduced by one, an axial through hole is formed in the cylindrical plugging block at the bottom, a first water pipe penetrates through the axial through hole of the uppermost cylindrical plugging block and then extends to the upper surface of the adjacent cylindrical plugging block at the bottom, a second water pipe penetrates through the axial through holes of the upper two cylindrical plugging blocks and then extends to the upper surface of the adjacent cylindrical plugging block at the bottom, a third water pipe penetrates through the axial through holes of the three cylindrical plugging blocks at the top and then extends to the upper surface of the adjacent cylindrical plugging blocks at the bottom, and the axial through holes of the cylindrical plugging blocks at the bottom are sequentially connected with the cylindrical plugging blocks by the aid of the water pump.

2. The sampling device for environmental impact evaluation groundwater environment current status monitoring according to claim 1, wherein: the outer peripheral surface of the cylindrical plugging block is provided with a sealing rubber layer, and the sealing rubber layer is tightly contacted with the inner wall of the sampling tube.

3. The sampling device for environmental impact evaluation groundwater environment current status monitoring according to claim 1, wherein: an axial limiting cavity is formed in the lower end of the sampling tube, and the lower end of the concentric rod is inserted into the axial limiting cavity and fixes the axial limiting block.

4. The sampling device for environmental impact evaluation groundwater environment current status monitoring according to claim 1, wherein: the upper end of the sampling tube is provided with a joint and is connected with a middle pipeline by the joint.

5. The sampling device for environmental impact evaluation groundwater environment current status monitoring according to claim 1, wherein: the upper end of the sampling tube is internally provided with a guide block, and the guide block is provided with guide holes corresponding to the water delivery tubes and the concentric rods.

6. The sampling device for environmental impact evaluation groundwater environment current status monitoring according to claim 1, wherein: and a switching valve is arranged on the flexible switching pipeline.

7. The sampling device for environmental impact evaluation groundwater environment current status monitoring according to claim 1, wherein: and a filter screen is arranged at the position of the outer wall of the sampling tube corresponding to the radial through hole.

Images