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A groundwater sampling device

A sampling device, groundwater technology, applied in sampling devices, measuring devices, sampling and other directions, can solve the problems of inability to quickly take out, the upper surface of the sampling hole collapses, etc., and achieve the effect of preventing collapse and improving stability

Active Publication Date: 2022-05-27
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems in the prior art that the upper surface of the sampling hole is easy to collapse under the action of the pressure difference, so that the sampling tube cannot be taken out quickly after the sampling is completed, and a groundwater sampling device is proposed.

Method used

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  • A groundwater sampling device
  • A groundwater sampling device
  • A groundwater sampling device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] refer to Figure 1-10 , a groundwater sampling device, including a bottom plate 1 and a sampling pipe 301, and also includes: a cover plate 2, which is covered on the bottom plate 1, the bottom of the cover plate 2 is connected with a first threaded sleeve 3, and the sampling pipe 301 is detachably connected to the first threaded sleeve 3. On the threaded sleeve 3; the bottom plate 1 is provided with a plurality of groups of anti-collapse cylinders 8 distributed around the circumference of the cover plate 2, the side wall of the anti-collapse cylinder 8 is rotatably connected with an anti-collapse rod 801, and the anti-collapse rod 801 extends out of one end of the anti-collapse cylinder 8 The anti-collapse plate 802 is connected in rotation; the anti-collapse cylinder 8 is slidably connected with a lower pressure rod 7, and the bottom of the depression rod 7 is attached to the end of the anti-collapse rod 801 extending into the anti-collapse cylinder 8; The pressing ro...

Embodiment 2

[0039] refer to Figure 1-10 , on the basis of Example 1, further,

[0040] A box 101 is arranged on the bottom plate 1, a motor 4 is arranged in the box 101, and a crankshaft 401 is connected to the output end of the motor 4. The box 101 is provided with a piston assembly 402 rotatably connected to the crankshaft 401, and the side wall of the piston assembly 402 is connected There are a first pipe 403 and a second pipe 502, both of which are provided with a one-way valve, and one end of the first pipe 403 away from the piston assembly 402 is connected to the first threaded sleeve 3 through a sealing joint 404 , the first pipeline 403 is also provided with a pressure valve.

[0041] During sampling, the first pipe 403 is connected to the first threaded sleeve 3 through the sealing joint 404, the motor 4 is started, the motor 4 drives the piston assembly 402 to move through the crankshaft 401, and the piston assembly 402 is pumped through the first pipe 403, so that the Negativ...

Embodiment 3

[0050] refer to Figure 1-10 , on the basis of Example 2, further,

[0051] The top of the sampling tube 301 is threadedly connected with a cap 302 , and the top of the cap 302 is connected with an air extraction nozzle 303 , and the air extraction nozzle 303 is threadedly connected to the first threaded sleeve 3 .

[0052] The top of the sampling tube 301 is provided with a cap 302, which can quickly take out a groundwater sample after sampling is completed.

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Abstract

The invention discloses a groundwater sampling device, which belongs to the technical field of water quality sampling. The groundwater sampling device includes a bottom plate and a sampling pipe, and also includes a cover plate, which is covered on the bottom plate, and a first threaded sleeve is connected to the bottom of the cover plate. , the sampling tube is detachably connected to the first threaded sleeve; the bottom plate is provided with multiple groups of anti-collapse cylinders distributed around the circumference of the cover plate, and the side walls of the anti-collapse cylinders are rotatably connected with anti-collapse rods, the The end of the anti-collapse rod extending out of the anti-collapse tube is connected with an anti-collapse plate; during the process of sampling groundwater, when the sampling pipe is pumped, the pumped gas pushes the push rod to move downward, and then passes through the lower rod and the anti-collapse The mutual cooperation of the collapsing rods makes the anti-collapse plate offset against the upper surface of the sampling hole, which supports the sampling hole to a certain extent, prevents the sampling hole from collapsing due to the pressure difference with the outside world, and improves the stability of sampling.

Description

technical field [0001] The invention relates to the technical field of water quality sampling, in particular to a groundwater sampling device. Background technique [0002] Shallow groundwater is formed by atmospheric precipitation and surface runoff. Both the water quality and quantity are affected by precipitation and runoff. The burial is generally between a few meters and a dozen meters. It is greatly affected by the soil environment and soil hygiene. Important reference. [0003] Due to the rapid renewal of shallow groundwater and the large changes in water quality, intensive sampling is often required to study shallow groundwater. However, in order to improve the sampling efficiency of existing groundwater sampling devices on the market, when the sampling pipe is pumped, the sampling pipe where the sampling pipe is located. In the hole, a certain pressure difference will be formed relative to the outside world, which will cause the upper surface of the sampling hole t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/14
CPCG01N1/14G01N2001/1427
Inventor 杨晨晨刘志超廖思远张雷秦延文
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI