CN108680399B - Underground water depth-setting sampler - Google Patents
Underground water depth-setting sampler Download PDFInfo
- Publication number
- CN108680399B CN108680399B CN201810726034.7A CN201810726034A CN108680399B CN 108680399 B CN108680399 B CN 108680399B CN 201810726034 A CN201810726034 A CN 201810726034A CN 108680399 B CN108680399 B CN 108680399B
- Authority
- CN
- China
- Prior art keywords
- funnel
- sampling
- sleeve
- water
- sampler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses an underground water depth-setting sampler which sequentially comprises at least two connecting pipes, a sampling base pipe and a one-way water stopping device from top to bottom; the sampling base tube and the connecting tube are detachably fixed to form a mutually communicated sampling cavity; the sampling base pipe is communicated with the one-way water stopping device through a sleeve type telescopic joint, the one-way water stopping device comprises a funnel and a funnel sleeve, the upper end of the telescopic joint is fixed with the lower end of the sampling base pipe in a sealing mode, the lower end of the telescopic joint is in threaded connection with the funnel sleeve, the funnel is arranged in a space formed by the funnel sleeve and the telescopic joint, the lower portion of the funnel extends out of the funnel sleeve, the upper end portion of the funnel is clamped in the funnel sleeve, and the funnel is tightly sealed with the lower edge of the; when sampling, the funnel moves upwards under the thrust of water, the funnel is separated from the lower edge of the funnel sleeve to form a water inlet channel, and when sampling is finished, the sampler is lifted upwards, and the funnel moves downwards to be tightly fit with the funnel sleeve, so that a water stop state is achieved. The invention has the advantages of simple structure, various sampling modes, convenient carrying, easy operation and strong controllability, and can sample water at a fixed depth.
Description
Technical Field
The invention relates to the technical field of environmental pollution treatment, in particular to a multifunctional underground water depth-setting sampler.
Background
The collection of groundwater samples is a key task in field survey evaluation practice. During groundwater investigation, the contaminants in the groundwater include organic contaminants and inorganic contaminants, wherein the organic contaminants include heavy non-aqueous phase contaminants and light non-aqueous phase contaminants. The underground water sample in the appointed depth range is accurately collected, so that the underground water pollution degree can be accurately determined, and the underground water pollution evaluation can be scientifically carried out.
When the existing groundwater sampler collects groundwater, one or more adverse factors are highlighted, and the collection of groundwater samples is influenced, including: 1. in the underground water collecting process, due to the material problem of the sampling device, part of organic pollutants are adhered to the inner wall of the sampling device, so that the measuring result is low; 2. in the process of transferring the collected underground water to a sample bottle from a sampling device, because liquid splashes or disturbance is severe in the water discharging process, part of volatile organic compounds in the underground water are lost, and the collection of samples is influenced; 3. the length of the existing sampler is fixed, the covered depth range of the collected sample is single, the sampling depth span can not be flexibly adjusted, most of the existing sampler is a sampling pipe with the length close to one meter, and the samples with larger span depth (such as the depth span reaches 1 meter) are easy to mix; 4. the existing sampling device is more than one disposable sampling device, cannot be reused and is easy to cause waste.
Disclosure of Invention
The invention aims to provide the underground water sample device which can be used repeatedly, has adjustable sampling depth span, reduces the adhesion of pollutants and reduces the loss of volatile substances.
In order to achieve the purpose, the invention provides the following technical scheme:
a groundwater depth-fixing sampler comprises at least two connecting pipes, a sampling base pipe and a one-way water stop device from top to bottom in sequence when the sampler is erected; the sampling base tube and all the connecting tubes are detachably fixed (can be connected by threads, buckles and the like) to form a mutually communicated sampling cavity; the sampling base pipe is communicated with the one-way water stopping device through a sleeve type telescopic joint, the one-way water stopping device comprises a funnel with a valve and a funnel sleeve, the upper end of the telescopic joint is fixed with the lower end of the sampling base pipe in a sealing mode, the lower end of the telescopic joint is connected with the funnel sleeve through threads, the funnel is arranged in a space formed by the funnel sleeve and the telescopic joint and can move up and down, the lower portion of the funnel extends out of the funnel sleeve, the upper end portion of the funnel is clamped in the funnel sleeve, and the funnel is tightly sealed with the lower edge of the funnel sleeve; when sampling, the lower part of the funnel is pushed by water to move upwards and is stopped at the lower end of the sampling base pipe, the funnel is separated from the lower edge of the funnel sleeve to form a water inlet channel, and when sampling is finished, the sampler is lifted upwards, and the funnel is pushed downwards by water to be tightly fit with the funnel sleeve, so that a water stop state is achieved.
Preferably, the outer diameter of the upper end of the funnel is smaller than the inner diameter of the sampling base tube, and the lower end part of the sampling base tube is provided with a stop piece for preventing the funnel from entering the sampling base tube.
Preferably, the stop piece is a water filtering baffle or a cross-shaped baffle rod.
Preferably, the upper end part of the funnel, which is positioned in the funnel sleeve, is provided with a water inlet hole.
Preferably, the fixed position of the telescopic joint and the sampling base pipe can be adjusted up and down.
Preferably, the connecting pipe and/or the pipe wall of the sampling base pipe are/is provided with a sampling port and sealed by a soft rubber cushion. When volatile pollutants are collected, a rigid sampling pipe, a sampling needle and the like can be directly inserted into the sampling pipe to extract a non-disturbed water sample, and compared with a pouring method and a method of controlling a valve to drain water, the extraction method can avoid the loss of volatile substances. When non-volatile pollutants are collected, water can be directly discharged by opening a control valve on the funnel with the valve.
Preferably, the water outlet end of the connecting pipe is provided with a second one-way water stopping device.
Preferably, the second one-way water stopping device is of a double-sheet hinge type, a middle shaft of the hinge is fixed on the pipe wall, the hinge is opened under the impulsive force of water inflow, and a stop rod for limiting the opening angle of the hinge is arranged on the pipe wall in the opening direction of the hinge.
Preferably, when the hinge is in a water stop state, a sealing ring is arranged between the edge of the hinge and the inner pipe.
Preferably, the sampling base pipe and the connecting pipe are marked with scales; the sampling base pipe, the connecting pipe, the telescopic joint, the funnel and the funnel sleeve are all made of corrosion-resistant and anti-adhesion materials, and can be manufactured by adopting a Teflon material but not limited to the Teflon material, so that the adhesion residue of pollutants can be reduced to the maximum extent.
Preferably, the funnel material has a density greater than water.
Compared with the prior art, the invention has the following advantages:
(1) the invention has the advantages of wide sampling depth range, various sampling modes, simple structure, convenient carrying, easy operation, strong controllability and the like.
(2) The invention can directly use a hard sampling pipe, a sampling needle and the like to insert and extract a non-disturbed water sample, and compared with a pouring method and a method for controlling the valve to drain water, the extraction method can avoid the loss of volatile substances.
Drawings
Fig. 1 is a schematic structural diagram of a front cross section of a sampler.
Fig. 2 is a schematic structural view of the telescopic joint when contracted.
FIG. 3 is a schematic view of the position of a sampling port of the soft gel pad.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.
Example 1
A groundwater depth-fixing sampler comprises at least two connecting pipes 2, a sampling base pipe 1 and a one-way water stopping device 6 from top to bottom in sequence when the sampler is erected; the sampling base tube 1 and all the connecting tubes 2 are detachably fixed to form a mutually-communicated sampling cavity; the sampling base pipe 1 is communicated with the one-way water stopping device 6 through a sleeve type telescopic joint 12, the one-way water stopping device 6 comprises a funnel 8 with a valve 9 and a funnel sleeve 10, the upper end of the telescopic joint 12 is fixed with the lower end of the sampling base pipe 1 in a sealing mode, the lower end of the telescopic joint 12 is connected with the funnel sleeve 10 through threads, the funnel 8 is arranged in a space formed by the funnel sleeve 10 and the telescopic joint 12 and can move up and down, the lower portion of the funnel 8 extends out of the funnel sleeve 10, the upper end portion of the funnel 8 is clamped in the funnel sleeve 10, and the funnel 8 is tightly sealed with the lower edge of the funnel sleeve 10; the external diameter of funnel upper end is less than the internal diameter of sampling parent tube, and the lower tip of sampling parent tube is equipped with ends position 7, prevents that the funnel from getting into the sampling parent tube. Scales are marked on the sampling base tube 1 and the connecting tube 2; the material of the funnel 8 has a density greater than water. The upper end of the sampler is connected with a pull rope through a fixing piece 4, the pull rope is composed of a plurality of sections, each section is 20cm, the color of one section is the same at intervals, and other special color marks are used every 1m to ensure depth-fixed sampling.
During sampling, firstly, the sampling depth span is determined, the number of the expansion connecting pipes 2 is determined according to the sampling depth span, and the sampler is assembled. During sampling, the control valve 9 is closed, the telescopic joint 12 is pulled open, a certain space is formed above the one-way water stopping device 6, in the water discharging process of the sampler, the funnel 8 with the valve at the bottom floats upwards under the reverse thrust action of water, the funnel 8 is separated from the lower edge of the funnel sleeve 10, the one-way water stopping device 6 forms an opening, and a water sample enters the sampler from the opening; get full groundwater back in the sampling pipe, carry out the sampling pipe through stay cord 5, at the in-process of extracting, the sample thief water sample is pushed and is taken valve funnel 8 to push down because of the action of gravity, plugs up one-way water stop device 6's opening, prevents that the water sample from flowing. After the sampler is taken out, the telescopic joint 12 is compressed (namely in a contraction state), and the stop member 7 abuts against the funnel with the valve 8, so that the funnel with the valve is fixed, the one-way water stopping device 6 is blocked, the one-way water stopping device 6 is ensured not to float upwards and leak water due to touch in the subsequent operation process, and the water stopping purpose is achieved.
And the pipe walls of the connecting pipe 2 and the sampling base pipe 1 are provided with sampling ports 11 and are sealed by soft rubber cushions. During sampling, for volatile samples, a rigid sampling tube, a sampling needle and the like can be directly inserted into the sampling tube to extract a non-disturbed water sample; and the sampling of the non-volatile sample can be performed by discharging water through a control valve 9 below the sampling pipe, and a water sample is collected.
Claims (8)
1. The underground water depth-setting sampler is characterized by comprising at least two connecting pipes, a sampling base pipe and a one-way water stopping device from top to bottom in sequence; the sampling base pipe and all the connecting pipes are detachably fixed to form a sampling cavity which is communicated with each other; the sampling base pipe is communicated with the one-way water stopping device through a sleeve type telescopic joint, the one-way water stopping device comprises a funnel with a valve and a funnel sleeve, the upper end of the telescopic joint is fixed with the lower end of the sampling base pipe in a sealing mode, the lower end of the telescopic joint is connected with the funnel sleeve through threads, the funnel is arranged in a space formed by the funnel sleeve and the telescopic joint, the lower portion of the funnel extends out of the funnel sleeve, the upper end portion of the funnel is clamped in the funnel sleeve, and the funnel is tightly sealed with the lower edge of the funnel sleeve; when sampling, the lower part of the funnel is pushed by water to move upwards and stop at the lower end of the sampling base pipe, the funnel is separated from the lower edge of the funnel sleeve to form a water inlet channel, and when sampling is finished, the sampler is lifted upwards, the funnel moves downwards under force and is tightly fit with the funnel sleeve to achieve a water stop state;
a sampling port is arranged on the pipe wall of the connecting pipe and/or the sampling base pipe and is sealed by a soft rubber gasket;
and a second one-way water stopping device is arranged at the water outlet end of the connecting pipe.
2. The sampler of claim 1, wherein the outer diameter of the upper end of the funnel is smaller than the inner diameter of the sampling base tube, and the lower end of the sampling base tube is provided with a stop preventing the funnel from entering the sampling base tube.
3. Sampler according to claim 2, wherein the stop is a water-filtering baffle or a cross bar.
4. Sampler according to claim 1 or 2 or 3, wherein the funnel is provided with an inlet opening at its upper end within the funnel housing.
5. Sampler according to claim 1 or 2 or 3, wherein the fixing position of the telescopic joint to the sampling base tube is adjustable up and down.
6. The sampler of claim 1, 2 or 3, wherein the second one-way water stop device is a double-leaf hinge type, a central shaft of a hinge is fixed on the pipe wall, the hinge is opened under the impact force of water inflow, and a stop lever for limiting the opening angle of the hinge is arranged on the pipe wall in the opening direction of the hinge.
7. The sampler of claim 6, wherein a seal ring is disposed between the edge of the hinge and the inner tube when the hinge is in a water-stop state.
8. The sampler of claim 1, 2 or 3, wherein the sampling base pipe and the connecting pipe are marked with scales; the sampling base tube, the connecting tube, the telescopic joint, the funnel and the funnel sleeve are all made of corrosion-resistant materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810726034.7A CN108680399B (en) | 2018-07-04 | 2018-07-04 | Underground water depth-setting sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810726034.7A CN108680399B (en) | 2018-07-04 | 2018-07-04 | Underground water depth-setting sampler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108680399A CN108680399A (en) | 2018-10-19 |
| CN108680399B true CN108680399B (en) | 2020-05-22 |
Family
ID=63813204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810726034.7A Active CN108680399B (en) | 2018-07-04 | 2018-07-04 | Underground water depth-setting sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108680399B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946119B (en) * | 2019-04-28 | 2024-03-26 | 中国科学院烟台海岸带研究所 | Shipborne micro-plastic layered sampling device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201955253U (en) * | 2011-03-05 | 2011-08-31 | 卢宇昊 | Ditch surface water sampler |
| CN207366268U (en) * | 2017-11-08 | 2018-05-15 | 环境保护部华南环境科学研究所 | A kind of vertical demixing synchronised fluid sampler |
| CN208488294U (en) * | 2018-07-04 | 2019-02-12 | 广州市璞境生态保护技术有限公司 | A kind of ground water fixed depth sampler |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5279167A (en) * | 1992-06-09 | 1994-01-18 | Roger Peterson | Method and apparatus for providing a sample for testing for volatile emissions |
| US7353721B2 (en) * | 2004-07-08 | 2008-04-08 | Feller Robin L | Fluid sampling device |
| CN206208598U (en) * | 2016-12-02 | 2017-05-31 | 河海大学 | A kind of countryside portable hydrological information collection device |
| CN107966325A (en) * | 2017-11-28 | 2018-04-27 | 张莲 | Sampler for water quality detection |
-
2018
- 2018-07-04 CN CN201810726034.7A patent/CN108680399B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201955253U (en) * | 2011-03-05 | 2011-08-31 | 卢宇昊 | Ditch surface water sampler |
| CN207366268U (en) * | 2017-11-08 | 2018-05-15 | 环境保护部华南环境科学研究所 | A kind of vertical demixing synchronised fluid sampler |
| CN208488294U (en) * | 2018-07-04 | 2019-02-12 | 广州市璞境生态保护技术有限公司 | A kind of ground water fixed depth sampler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108680399A (en) | 2018-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209327048U (en) | A kind of water sample sampler | |
| CN104931290A (en) | Detachable dual-purpose sampler for shallow sediment and soil and sampling method for detachable dual-purpose sampler | |
| KR102174791B1 (en) | Improved Type of Hydraulically Activated Fixed-Piston Sampler | |
| CN207937215U (en) | A kind of wastewater sampling container | |
| CN103323290A (en) | Sampler for sediment pore water sampling in rivers or lakes | |
| CN103323285A (en) | Freezing sampler for sediments in different depth of rivers or lakes | |
| CN108680399B (en) | Underground water depth-setting sampler | |
| CN205280549U (en) | Chang shuitou ground body osmotic coefficient testing arrangement is moved in light perturbation | |
| CN206891769U (en) | Water quality monitoring sampling structure | |
| JP2005325615A (en) | Sampling device and sampling method | |
| CN107063771B (en) | Dialysis machine water inlet sampler | |
| CN201548425U (en) | Underground water depth keeping sampler | |
| CN203231915U (en) | Sampler for sampling pore water of sediments in rivers or lakes | |
| CN211784556U (en) | Suction type static sounding rapid water taking device | |
| CN208488294U (en) | A kind of ground water fixed depth sampler | |
| CN205477739U (en) | Sediment water discharging device is arranged to gas drainage pipeline simple and easy tubulose in colliery | |
| CN105259090B (en) | Soil infiltration instrument | |
| CN208043485U (en) | It is a kind of multilayer to take the modular unit of liquid in saturation or unsaturated soil | |
| CN207751735U (en) | A kind of sediment interstitial water sampler | |
| CN203231905U (en) | Freezing sampler for bottom mud in different depths in rivers or lakes | |
| CN206725272U (en) | Substrate sludge sampling servicing unit | |
| CN108362525A (en) | It is a kind of multilayer to take the modular unit of liquid in saturation or unsaturated soil | |
| CN217059523U (en) | Drainage guide pipe device for sampling underground water in polluted site | |
| CN208206548U (en) | A kind of novel hydrophore | |
| CN208476597U (en) | A kind of liquid sampler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |