In-situ collection and filtration device based on shallow groundwater and using method of in-situ collection and filtration device

A filter device and groundwater technology, which is applied in the direction of measuring device, sampling device, test sample preparation, etc., can solve the problems of unfavorable monitoring of water quality changes, increased filtration process, difficult to carry out, etc., to improve the efficiency and accuracy of water quality monitoring High degree, reduced post-process, simple structure effect

Pending Publication Date: 2019-08-09
INST OF HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, there is a shortage of water resources in the arid and semi-arid areas of Northwest my country. Due to the implementation of policies such as shutting down wells and pressing fields, the motor-driven wells in this area have been abandoned or buried. It is difficult to carry out here; in addition, in the process of sampling and researching local water quality, the method of direct water intake by excavation greatly increases the filtration process of water in the later stage, and the complexity is increased. Changes occur, which is not conducive to monitoring the law of water quality changes

Method used

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  • In-situ collection and filtration device based on shallow groundwater and using method of in-situ collection and filtration device
  • In-situ collection and filtration device based on shallow groundwater and using method of in-situ collection and filtration device
  • In-situ collection and filtration device based on shallow groundwater and using method of in-situ collection and filtration device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The following is a description of Embodiment 1.

[0034] Such as figure 1 , 3 As shown, an in-situ collection and filtration device based on shallow groundwater includes a collection filter head 1, a filter hole 11, a clay head 2, a connecting pipe 3, an air extraction pipe 4, a small air extraction pump 42, an air intake pipe 5, and an air guiding soft tube 6 and sampling bottle 7, the collection filter head 1 and the connecting pipe 3 all adopt a cylindrical pipe body structure, and the top of the collection filter head 1 is fixedly connected with a plurality of connecting pipes 3 arranged linearly, the The top of the sampling bottle 7 is provided with a connecting bottle mouth 71, and the connecting bottle mouth 71 is fixedly connected with the bottom of the collection filter head 1, and the bottom of the sampling bottle 7 is covered with a rubber sleeve 72.

[0035] The upper part of the collection filter head 1 is evenly provided with a plurality of filter holes ...

Embodiment 2

[0041] The following is a description of Embodiment 2.

[0042] In embodiment 2, for the same structure as in embodiment 1, give the same symbol, omit the same description, embodiment 2 has made improvement on the basis of embodiment 1, as Figure 5 As shown, the outer side of the connecting pipe 3 is provided with a balance frame 8 for improving the overall balance, and the balance frame 8 includes an annular balance limit plate 81 arranged on the outside ground of the collection channel 9, arranged on the balance A plurality of extension protection rods 82 at the bottom of the limiting plate 81 and a positioning ring 83 arranged at the bottom of the extension protection rods 82 .

[0043] Specifically, the outer diameters of the collection filter head 1, the connecting pipe 3 and the sampling bottle 7 are the same, and the balance limiting plate 81 adopts an annular plate structure with a through hole in the center, and the through hole on the balance limiting plate 81 The ...

Embodiment 3

[0046] The following is a description of Embodiment 3.

[0047] In embodiment 3, for the same structure as in embodiment 1, give the same symbol, omit the same description, embodiment 3 has made improvement on the basis of embodiment 1, as Figure 6 As shown, the inside of the collection filter head 1 is set with an adjustment tube 13, and the adjustment tube 13 is uniformly provided with adjustment holes 16 corresponding to the positions of the filter holes 11. Specifically, the collection filter head 1 An annular matching groove 15 is provided on the inner side above the filter hole 11, and the top of the adjustment tube 13 is provided with a limit protrusion 14 that slides and fits with the matching groove 15 to realize axial positioning in the tube body. The adjustment pipe 13 can realize the pre-adjustment of the size of the filter hole 11, which can be flexibly judged according to different geographical environments, which improves the practicability.

[0048] It should...

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Abstract

The invention provides an in-situ collection and filtration device based on shallow groundwater and a using method of the in-situ collection and filtration device, and belongs to the technical field of hydrogeology. The in-situ collection and filtration device comprises a collection and filtration head, a connecting pipe and a sampling bottle; the connecting pipe and the sampling bottle are arranged at the upper end and the lower end of the collection and filtration head correspondingly, a filtration hole is formed in the upper half part of the collection and filtration head, a pottery clay head is arranged on the lower half part of the collection and filtration head, an air pumping pipe making the sampling bottle to communicate with the connecting pipe is arranged on the pottery clay head, and the top of the air pumping pipe is connected with an air pumping module. The structure is simple, demounting, mounting and transporting are convenient, groundwater can be sampled in the limitedenvironment, water quality can be simultaneously filtered during sampling, and the later process is effectively reduced; and in addition, the pottery clay head made of clay is applied to serve as a filtration body, more solute can penetrate, the chemical ingredients of original groundwater quality are protected, and thus the monitoring efficiency and monitoring accuracy of the water quality are improved.

Description

technical field [0001] The invention relates to an in-situ collection and filtration device based on shallow groundwater and its use method, in particular to an on-site filtration and collection device for groundwater samples used in arid and semi-arid areas in Northwest China where the groundwater level is buried shallower, and belongs to hydrology geotechnical field. Background technique [0002] At present, there is a shortage of water resources in the arid and semi-arid areas of Northwest my country. Due to the implementation of policies such as shutting down wells and pressing fields, the motor-driven wells in this area have been abandoned or buried. It is difficult to carry out here; in addition, in the process of sampling and researching local water quality, the method of direct water intake by excavation greatly increases the filtration process of water in the later stage, and the complexity is increased. Changes occur, which is not conducive to monitoring the law of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/14G01N1/40
CPCG01N1/14G01N1/4077G01N2001/4088
Inventor 王茜刘鹏飞崔浩浩王金哲张光辉
Owner INST OF HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI
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