CN204327086U - Based on the groundwater sampling device of pumped well - Google Patents

Based on the groundwater sampling device of pumped well Download PDF

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Publication number
CN204327086U
CN204327086U CN201420668867.XU CN201420668867U CN204327086U CN 204327086 U CN204327086 U CN 204327086U CN 201420668867 U CN201420668867 U CN 201420668867U CN 204327086 U CN204327086 U CN 204327086U
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Prior art keywords
pumped well
well
guiding tube
stream guiding
water
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CN201420668867.XU
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Chinese (zh)
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黄爽兵
王妍妍
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Institute of Hydrogeology and Environmental Geology CAGS
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Institute of Hydrogeology and Environmental Geology CAGS
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Abstract

The utility model discloses a kind of groundwater sampling device based on pumped well, relate to underground water detection device technical field.The utility model comprises pumped well and the detachable stream guiding tube be fixed on pumped well connecting rod, is provided with shutoff in the outlet pipe of described pumped well.This device transforms rear as sampling source, greatly saving the huge manpower and financial resources dropped into because drilling into well, being suitable for carrying out water sampling in the area of pressure water well.

Description

Based on the groundwater sampling device of pumped well
Technical field
The utility model relates to underground water detection device technical field, especially a kind of groundwater sampling device based on pumped well.
Background technology
Existing underground water sampling technique is mostly drilled into well or special groundwater monitoring well for tradition and designs, such as, Bailer sampler, discontinuous interval sampler, air pocket pump, gas displacement type sampler, cast lift pump etc., but in the process utilizing these equipment to sample, can more or less cause disturbance to underground water and affect the quality of sample, on the other hand, the corollary equipment that also can need due to it is more, lowered in field environment needs to drop into more manpower and financial resources and drills when using, Cheng Jing, also the huge waste of manpower and financial resources is therefore caused.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of groundwater sampling device based on pumped well, this device be the pumped well of existing use is transformed rear as sampling source, its structure is simple, sampling is convenient, undisturbed groundwater sample can be collected, and can the manpower and financial resources dropped into because drilling into well be saved, be suitable for carrying out water sampling in the area of pressure water well.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of groundwater sampling device based on pumped well, comprises pumped well and the detachable stream guiding tube be fixed on pumped well connecting rod, is provided with shutoff in the outlet pipe of described pumped well.
Described detachable being fixed as adopts clip to fix.
The material of described clip is copper or stainless steel material.
The material of described shutoff is polytetrafluoroethylmaterial material or silica gel material.
Described stream guiding tube is 1-3 root, and stream guiding tube water inlet is less than 10mm to the distance of pumped well piston upper surface.
The internal diameter of described stream guiding tube is 4-6 mm.
The beneficial effect adopting technique scheme to produce is: this device is applicable to carry out water sampling in the area of pressure water well, add guiding device on pumped well, the underground water pressed from pumped well is drained into sampling bottle, utilize this device can not only collect former state underground water, meet the requirement to groundwater monitoring standard, and can save and drill into well expense, avoid the huge waste of manpower and financial resources.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1, piston; 2, pumped well; 3, connecting rod; 4, clip; 5, shutoff; 6, stream guiding tube; 7, sampling bottle.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Vast rural area particularly knob, mountain area generally uses pumped well to draw underground water, this provides for carry out Groundwater Contamination Investigation or rural drinking water safety research in this region the condition that groundwater sample gathers, in these areas, utilize the pumped well of existing use to carry out water sampling, very large one can be saved and drill into well funds.However, if directly pressure gets well water, and gather water sample from water outlet pipe part, the water sample of such collection, after pressing in well, underground water because creating disturbance with piston up-down, and creates because directly contacting with air oxygen problem of exposing to the sun again, thus can not meet anaerobism index, detest CO 2the water sampling requirement of index and volatile materials or gas index.
This utility model provides a kind of pumped well 2 for existing use to carry out the device sampled, specifically stream guiding tube 6 is arranged on the connecting rod 3 of pumped well 2, and near the upper surface place of piston 1, and in water outlet pipe part, shutoff 5 is installed, after water extrudes in well, can flow in sampling bottle 7 through stream guiding tube 6, also namely underground water from being flow in the passage of a sealing to sampling bottle in well, the water sample of such collection both can not be disturbed, do not have and contacting external air, closer to original quality of groundwater yet.The utility model utilizes the guide functions of stream guiding tube 6, be connected with pumped well 2, make to utilize pumped well 2 to gather the process of water sample simple and convenient, also farthest can ensure the sampling quality of underground water, make the sample of collection closer to original underground water, meet rigorous sampling standard.
Wherein stream guiding tube 6 is fixed with the detachable clip 4 that is fixed as of connecting rod 3, and the material of clip 4 is copper or stainless steel material; Or with copper bar or steel bar, walk around stream guiding tube 6 and connecting rod 3, then with buckle or snap ring, the two ends of copper bar or steel bar are clamped.
The material of shutoff 5 is polytetrafluoroethylmaterial material or silica gel material, the object of outlet pipe being carried out to shutoff lays in enough underground water in guarantor unit's time in pumped well 2 to supply the discharge in stream guiding tube 6, avoid frequent setting-out rapidly, cause the disturbance to underground water, the effect of impact sampling.
For avoiding collecting the surface water contacted with air in well, stream guiding tube 6 water inlet should stretch in the water surface, particular location is remaining on and be less than 10mm apart from piston 1 upper surface near piston 1 and be advisable, the underground water being convenient to press from pumped well 2 directly enters stream guiding tube 6, collects former state underground water.
The internal diameter of described stream guiding tube 6 is 4-6mm, should not too slightly or too thin.For gathering many bottles of water samples simultaneously, 2 or 3 stream guiding tube 6 can be connected simultaneously.
During operation, first the piston 1 of pumped well 2 has been pressed, the water inlet pipe mouth of stream guiding tube 6 to be fixed together with connecting rod 3 near the upper surface of piston 1, when piston 1 moves up and down, stream guiding tube 6 moves up and down with connecting rod 3, and the mouth of pipe of stream guiding tube 6 keeps identical with the distance of piston 1 all the time and is immersed in water; When setting-out samples, utilize shutoff 5 to block the effluent pipe mouth of pumped well 2, owing to being full of water in pit shaft in Drive stroke, current will flow automatically to along stream guiding tube 6 and be placed in ground sampling bottle 7 under siphonage.And be immersed in below the groundwater level aspirated up in well all the time due to stream guiding tube 6, as long as pumped well 2 is air tight, what flow out in stream guiding tube 6 will be the former state underground water do not contacted with air all the time.For avoiding water sample and the atmosphere of the access of stream guiding tube 6 water outlet, at the bottom of stream guiding tube 6 being deep into bottle, with underground water at the bottom of bottle toward the mode of bottleneck overflow upwards drainage collection.
In the wild in practice, carry out sampling with this device to many mouthfuls of pumped wells 2 and test, and statistical analysis, result is that dissolved oxygen index was reduced to 0.12mg/L by former average 2.5mg/L, is minimumly down to 0.It can thus be appreciated that the underground water obtained is very close to original underground water.It may be noted that the prerequisite utilizing which can obtain former state underground water is that pumped well 2 used often uses, and in order, there is not the other problem such as piston and well casing gas leakage itself, otherwise sampling effect obviously can reduce.
By the water sample that this device gathers, closely-related on-the-spot index can be measured with underground water Redox Condition accurately, really, as dissolved oxygen index, oxidation-reduction potential index etc., also can meet other needs avoids the sampling request with the index of atmosphere, the authenticity of the data such as some sensitive indicators of significant increase and escaping gas index simultaneously.
Utilize this device can realize pumped well 2 simply and easily to sample, the underground water undisturbed, the bubble-free that extract in pipe well, underground water is along the closed importing sampling bottle 7 of stream guiding tube 6, then after overflowing bottleneck at the bottom of bottle, water sample is collected, thus make the sample of collection farthest close to former state underground water, meet anaerobism or detest the requirement of air index and the water sampling of the index such as volatile materials or gas.

Claims (6)

1. based on a groundwater sampling device for pumped well, it is characterized in that: comprise pumped well (2) and the detachable stream guiding tube (6) be fixed on pumped well (2) connecting rod (3), in the outlet pipe of described pumped well (2), be provided with shutoff (5).
2. the groundwater sampling device based on pumped well according to claim 1, is characterized in that: described detachable being fixed as adopts clip (4) to fix.
3. the groundwater sampling device based on pumped well according to claim 2, is characterized in that: the material of described clip (4) is copper or stainless steel material.
4. the groundwater sampling device based on pumped well according to claim 1, is characterized in that: the material of described shutoff (5) is polytetrafluoroethylmaterial material or silica gel material.
5. the groundwater sampling device based on pumped well according to claim 1, is characterized in that: described stream guiding tube (6) is 1-3 root, and stream guiding tube (6) water inlet is less than 10mm to the distance of pumped well (2) piston (1) upper surface.
6. the groundwater sampling device based on pumped well according to claim 1, is characterized in that: the internal diameter of described stream guiding tube (6) is 4-6 mm.
CN201420668867.XU 2014-11-11 2014-11-11 Based on the groundwater sampling device of pumped well Active CN204327086U (en)

Priority Applications (1)

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CN201420668867.XU CN204327086U (en) 2014-11-11 2014-11-11 Based on the groundwater sampling device of pumped well

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Application Number Priority Date Filing Date Title
CN201420668867.XU CN204327086U (en) 2014-11-11 2014-11-11 Based on the groundwater sampling device of pumped well

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105568952A (en) * 2016-01-28 2016-05-11 成都绿迪科技有限公司 Building groundwater sampling device
CN106979870A (en) * 2017-05-09 2017-07-25 北京中矿东方矿业有限公司 A kind of continuous sampling system of diverse location sample
CN109917103A (en) * 2019-03-13 2019-06-21 中国地质科学院水文地质环境地质研究所 It is a kind of original position earth pillar irrigate leaching test and solute migration quantitative description

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105568952A (en) * 2016-01-28 2016-05-11 成都绿迪科技有限公司 Building groundwater sampling device
CN106979870A (en) * 2017-05-09 2017-07-25 北京中矿东方矿业有限公司 A kind of continuous sampling system of diverse location sample
CN106979870B (en) * 2017-05-09 2022-01-25 北京中矿东方矿业有限公司 Continuous sampling device of different position samples
CN109917103A (en) * 2019-03-13 2019-06-21 中国地质科学院水文地质环境地质研究所 It is a kind of original position earth pillar irrigate leaching test and solute migration quantitative description
CN109917103B (en) * 2019-03-13 2021-09-07 中国地质科学院水文地质环境地质研究所 In-situ soil column irrigation leaching test and solute migration quantitative description method

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