CN208270255U - A kind of differential ground water fixed depth acquisition device - Google Patents

A kind of differential ground water fixed depth acquisition device Download PDF

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Publication number
CN208270255U
CN208270255U CN201820817695.6U CN201820817695U CN208270255U CN 208270255 U CN208270255 U CN 208270255U CN 201820817695 U CN201820817695 U CN 201820817695U CN 208270255 U CN208270255 U CN 208270255U
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China
Prior art keywords
water inlet
fixed depth
acquisition device
guide housing
depth acquisition
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CN201820817695.6U
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Chinese (zh)
Inventor
王宇峰
王文杰
杜耀
刘磊
朱于红
张豆
田平
卓未龙
王志宏
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Zhejiang Zhuo Jin Environmental Protection Science And Technology Co Ltd
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Zhejiang Zhuo Jin Environmental Protection Science And Technology Co Ltd
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  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

The utility model relates to a kind of differential ground water fixed depth acquisition devices.Purpose is to provide a kind of differential ground water fixed depth acquisition device, the device have the characteristics that it is compact-sized, some certain depth can be sampled and be sampled it is accurate.Technical solution is: a kind of differential ground water fixed depth acquisition device, it is characterised in that: the device includes sampler and connects the gas source of sampler by appendix;The sampler includes probe tube, and the both ends of probe tube, which are respectively equipped in upper plug head and lower end cap and probe tube, is equipped with funnel shaped guide housing;The upper plug head is equipped with snorkel, and one end of snorkel is connected to appendix and the other end is connected to the aperture of guide housing, and floating ball is additionally provided in guide housing;The lower end cap is equipped with water inlet pipe, outlet pipe, and water inlet pipe is equipped with check valve, filter and water inlet, and outlet pipe is equipped with outlet valve.

Description

A kind of differential ground water fixed depth acquisition device
Technical field
The utility model relates to a kind of differential ground water fixed depth acquisition devices, it can be achieved that the underground water of certain depth takes Sample.
Background technique
With the fast development and industrial transformation of China's national economy, a large amount of retired industrial field has been left in city Ground.The survey showed that, and many retired places of industry all have a degree of Organic Contamination of Groundwater.Due to exhausted big portion Divide the solubility very little of organic matter in water, easily formation nonaqueous phase pollutant, this liquid is commonly referred to as nonaqueous phase liquid (nonaqueous phase liquids, NAPLs).According to density size, it is representative that NAPLs, which is divided for benzene homologues, halogenated hydrocarbons, Light non-aqueous phase liquids (light non-aqueous phase liquids, LNAPLs) and halogenated hydrocarbons, coal tar, heavy mineral Oil etc. are the dense non-aqueous phase liquids (dense non-aqueous phase liquids, DNAPLs) of representative, to prevent and controlling The construction place ecological accidents and construction project safety accident that soil and underground water pollution cause, need to carry out soil and underground water The work such as environment preliminary investigation, probe and risk assessment.Sampling is the main means and important content for carrying out site investigation, The result of sampling directly affects the objectivity and accuracy of site investigation, therefore, seems for the quality control of sampling process It is particularly important, and the representativeness of sample just can ensure that using suitable sampling tool, so which kind of sampling tool to seem ten using Divide important.
Nonaqueous phase liquid pollutant (NAPLs) enters in groundwater environment, it is possible in the form of 4 kinds: dissolution phase, remnants Phase, gas phase, and free phase.After a large amount of NAPL are leaked into aquifer, the small LNAPLs pollutant of density ratio water " floating " is easy on groundwater level, level of ground water collects around on water-bearing layer top;And relatively heavy DNAPLs pollutant Then it is intended to downward Vertical Migration, assembles in aquifer floor elevation.In general the acquisition of the free phase of NAPLs is due to formation condition etc. The factor of aspect is extremely difficult, therefore needs to develop a set of dedicated sample devices for the free phase of NAPLs.
Currently, groundwater sample mainly uses Beile's pipe, water pump or gas displacement type sampler to be acquired, Beile's pipe is only Mixed sample can be acquired, DNAPLs pollution water sample existing for place can not be acquired, lower end water inlet is unfavorable for surface layer LNAPLs dirt Contaminate the acquisition of object;And general sampling water pump is limited the shallow-layer water sample that can only be acquired no more than 10 meters of depths, and water by sampling depth Pump cleaning is difficult, and there are different samples to be easy the drawbacks of interfering with each other;Traditional gas displacement type sampler, in sampling process High pressure gas is easy to enter generation gas overflowing phenomenon in outlet pipe by being discharged check (non-return) valve, and the disengaging of gas can also be to water sample It causes compared with large disturbances, operation is also inconvenient.
Utility model content
The purpose of the utility model is to overcome the deficiency in above-mentioned background technique, a kind of differential ground water fixed depth is provided and is adopted Acquisition means, the device have the characteristics that it is compact-sized, some certain depth can be sampled and be sampled it is accurate.
The technical solution of the utility model is:
A kind of differential ground water fixed depth acquisition device, it is characterised in that: the device includes sampler and passes through gas transmission The gas source of pipe connection sampler;The sampler includes probe tube, and the both ends of probe tube are respectively equipped with upper plug head and lower end cap simultaneously And funnel shaped guide housing is equipped in probe tube;The upper plug head is equipped with snorkel, and one end of snorkel is connected to simultaneously with appendix And the other end is connected to the aperture of guide housing, and floating ball is additionally provided in guide housing;The lower end cap is equipped with water inlet pipe, outlet pipe, into Water pipe is equipped with check valve, filter and water inlet, and outlet pipe is equipped with outlet valve.
The outer diameter of the floating ball is greater than guide housing hole diameter and ventilation bore;The snorkel by connector with it is defeated Tracheae connection.
The water inlet pipe lower end closed, water inlet are set to water inlet pipe side wall.
The upper plug head is connect by helicitic texture with probe tube with lower end cap.
Scale is provided on the appendix.
The beneficial effects of the utility model are:
Compact is easy to carry, and the sampling of NAPLs pollution water sample precisely, operates also very convenient.
Detailed description of the invention
Fig. 1 is the schematic view of the front view of the utility model.
Specific embodiment
Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model be not limited to Lower embodiment.
A kind of differential ground water fixed depth acquisition device, including gas source 1, sampler 8 and appendix 2.On the gas source It (is omitted in figure) equipped with control valve, which is T-type three-way ball valve, for realizing the pressurization and pressure release of sampler.
The sampler includes probe tube 7.The smooth outer surface of the probe tube without corner angle and even thickness, in order to It is sampled in the lesser deep-well of diameter.The both ends of the probe tube are respectively equipped with upper plug head 3 and lower end cap 9, go back in probe tube Equipped with guide housing 5.The upper plug head is connect by helicitic texture with probe tube with lower end cap.The guide housing is inverted funnel Shape (up-small and down-big), is additionally provided with floating ball 6 in guide housing, and the outer diameter of floating ball is greater than the interior of guide housing hole diameter and snorkel Diameter.
The upper plug head is equipped with snorkel 4, and the upper end of snorkel is connected to by connector 14 with appendix, the lower end of snorkel It is connected to the aperture of guide housing, the macropore of guide housing plug downwards.By being welded and fixed between the snorkel and guide housing.
The lower end cap is equipped with water inlet pipe 10 and outlet pipe 15, water inlet pipe be equipped with check valve 11, filter 12 and into The mouth of a river 13, the filter can enter sampler to avoid large particulate matter, promote water sampling efficiency.The water inlet setting In water inlet pipe side wall, water inlet pipe lower end closed, convenient for the acquisition of LNAPLs pollution water sample.It is provided with scale on the appendix, Depth selection can be recorded.Outlet valve 16 is additionally provided on outlet pipe.
The working principle of the utility model is:
1, before sampling, gas source is opened, control valve is turned into pressurization shelves, gas source is taken compressed air injection by appendix In sample device, check valve tight close is discharged to avoid air from water inlet pipe, and larger pressure is thus formed inside sampler;
2, sampler is put into wellbore to be taken, control valve is turned into pressure release shelves when reaching designated depth, in sampler High pressure by control valve discharge, due to the differential pressure action inside and outside sampler, well water is entered in sampler by check valve;
3, when sampler full packages, floating ball rises and accurately blocks the aperture of guide housing, well water under the guidance of guide housing It cannot be introduced into appendix, play the role of protecting appendix;
4, control valve turning into pressurization shelves (gas source pressurizes), check valve, which is under pressure, at this time acts on tight close, It can prevent water sample from leaking;Sampler is finally taken out, outlet valve is opened and carries out dress sample preservation.

Claims (5)

1. a kind of differential ground water fixed depth acquisition device, it is characterised in that: the device includes sampler (8) and passes through gas transmission Manage the gas source (1) of (2) connection sampler;The sampler includes probe tube (7), and the both ends of probe tube are respectively equipped with upper plug head (3) and in lower end cap (9) and probe tube funnel shaped guide housing (5) are equipped with;The upper plug head is equipped with snorkel (4), ventilation One end of pipe is connected to appendix and the other end is connected to the aperture of guide housing, and floating ball (6) are additionally provided in guide housing;Under described Plug is equipped with water inlet pipe (10) and outlet pipe (15), water inlet pipe be respectively equipped with from top to bottom check valve (11), filter (12) and Water inlet (13), outlet pipe are equipped with outlet valve (16).
2. differential ground water fixed depth acquisition device according to claim 1, it is characterised in that: the outer diameter of the floating ball is big In guide housing hole diameter and ventilation bore;The snorkel is connect by connector (14) with appendix.
3. differential ground water fixed depth acquisition device according to claim 1, it is characterised in that: end seal under the water inlet pipe It closes, water inlet is set to water inlet pipe side wall.
4. differential ground water fixed depth acquisition device according to claim 1, it is characterised in that: the upper plug head is blocked up with lower Head is connect by helicitic texture with probe tube.
5. differential ground water fixed depth acquisition device according to claim 1, it is characterised in that: be arranged on the appendix There is scale.
CN201820817695.6U 2018-05-29 2018-05-29 A kind of differential ground water fixed depth acquisition device Active CN208270255U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820817695.6U CN208270255U (en) 2018-05-29 2018-05-29 A kind of differential ground water fixed depth acquisition device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820817695.6U CN208270255U (en) 2018-05-29 2018-05-29 A kind of differential ground water fixed depth acquisition device

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CN208270255U true CN208270255U (en) 2018-12-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112129580A (en) * 2020-08-25 2020-12-25 淮北矿业股份有限公司 Sampling device and sampling method for underground water detection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112129580A (en) * 2020-08-25 2020-12-25 淮北矿业股份有限公司 Sampling device and sampling method for underground water detection

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