Negative-pressure multifunctional underground water sampling device
By designing a negative pressure multifunctional groundwater sampling device, the problems of time-consuming, labor-intensive, highly disturbing, and loss of volatile organic compounds in existing technologies have been solved, achieving low-disturbance and high-efficiency groundwater sampling, and meeting the sampling requirements for DNAPL and heavy metals.
Patent Information
- Application Number
- CN202422680893.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-11-05
AI Technical Summary
Existing groundwater sampling equipment, such as Bayler tubes and submersible pumps, suffers from problems such as being time-consuming and labor-intensive during the sampling process, causing significant disturbance, loss of volatile organic compounds, and severe interference with heavy metal and VOCs measurement results, making it difficult to meet the requirements for high-quality sampling.
A negative pressure multifunctional groundwater sampling device was designed, comprising a fixed base, a battery, a plunger pump, a sampler, a power meter, a negative pressure gauge, a flow control switch, an air intake pipe, a partition, an air intake port, an air inlet, an air inlet pipe, a diverter pipe, a filter membrane support, a one-way valve, a connecting pipe, a diverter valve, and a graduated hose, etc. It achieves minimal disturbance, prevents the loss of volatile organic compounds, and allows for depth-controlled flow rate, meeting the sampling requirements for DNAPL and heavy metals.
It enables low-disturbance groundwater sampling, prevents the loss of volatile organic compounds, meets the sampling requirements for DNAPL and heavy metals, and improves sampling quality and accuracy.
Smart Images
Figure CN223611179U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the underground water environmental condition investigation technical direction, specifically relates to a kind of negative pressure multifunctional underground water sampling device. BACKGROUND
[0002] The key to influence the quality of groundwater environmental condition investigation and evaluation work is the determination of key investigation objects, sampling point layout, field sample collection and laboratory analysis, among which field sample collection is a very important but often easily ignored work.Groundwater sampling equipment is the key to obtain high-quality groundwater samples, and the difference of different sampling equipment will affect the authenticity and accuracy of samples.At present, the commonly used groundwater sampling equipment mainly includes Bailer and submersible pump.Among them, Bailer is time-consuming and laborious for deep well sampling and large water volume sampling.Submersible pump needs to be sunk into the monitoring water well, and the excessive flow rate causes excessive water level drop or turbidity in the well, and the turbidity is far more than the quality limit value (≤10NTU) of Class IV groundwater, so it is difficult to ensure that the water at the wellhead is clear and the sand is clean, which cannot meet the requirements of groundwater sampling, and in the subsequent experimental detection process, the high disturbance of suspended solids or particulate matter leads to the loss of volatile organic compounds, which seriously interferes with the determination results of monitoring indexes such as heavy metals and VOCS. SUMMARY
[0003] The utility model aims at the prior art to provide a kind of negative pressure multifunctional underground water sampling device to solve the problems raised in the above background.
[0004] To solve the above technical problems, the utility model provides the following technical scheme: a kind of negative pressure multifunctional underground water sampling device, including fixed seat, the outer wall of the fixed seat is respectively provided with battery, plunger pump and sampler, the battery is respectively provided with power meter, negative pressure meter and flow control switch, one end of the battery is provided with suction pipe connected with plunger pump and sampler respectively.
[0005] The inside of the sampler is provided with a partition, one side of the sampler is provided with a gas inlet pipe, one side of the gas inlet pipe is provided with a shunt pipe, one end of the gas inlet pipe is provided with a filter membrane support, the other side of the filter membrane support is provided with a connecting pipe, one end of the shunt pipe and the connecting pipe is provided with a diverter valve, one side of the diverter valve is provided with a graduated hose, the outer wall of the graduated hose is provided with a flowmeter, which realizes the effect of small disturbance and prevents the loss of volatile organic compounds, and can control the flow rate at a certain depth, thereby meeting the DNAPL sampling requirements, and can also perform 0.45 μm filter membrane ultrafiltration work, thereby meeting the heavy metal sampling requirements.
[0006] Further, the outer wall of the sampler is respectively provided with an air suction port and an air inlet port, the air suction port is matched with the air suction pipe, and the air inlet port is matched with the air inlet pipe, so as to facilitate the communication with the air suction pipe and the air inlet pipe.
[0007] Further, the outer wall of the air inlet pipe and the shunt pipe is provided with a first one-way valve, so as to facilitate the control of the flow direction.
[0008] Compared with the prior art, the utility model has the advantages that,
[0009] By setting the fixed seat, battery, plunger pump, sampler, ammeter, negative pressure gauge, flow control switch, air suction pipe, partition, air suction port, air inlet port, air inlet pipe, shunt pipe, filter membrane support, first one-way valve, connecting pipe, steering valve, scale hose and flow meter, the effect of small disturbance and prevention of volatile organic matter loss is realized, and the depth can be controlled and the flow rate can be controlled, thereby meeting the DNAPL sampling demand, and 0.45μm filter membrane ultrafiltration work can be carried out, thereby meeting the heavy metal sampling demand. BRIEF DESCRIPTION OF DRAWINGS
[0010] The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model. In the drawings:
[0011] Figure 1 It is the whole structure schematic view of the utility model;
[0012] Figure 2 It is the sampler schematic view of the utility model.
[0013] In the drawing: 1, fixed seat;2, battery;3, plunger pump;4, sampler;5, ammeter;6, negative pressure gauge;7, flow control switch;8, air suction pipe;9, partition;10, air suction port;11, air inlet port;12, air inlet pipe;13, shunt pipe;14, filter membrane support;15, first one-way valve;16, connecting pipe;17, steering valve;18, scale hose;19, flow meter. DETAILED DESCRIPTION
[0014] The utility model technical scheme will be further and non-restrictively described in combination with the preferred embodiments and drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0015] Please refer to Figures 1-2The utility model provides technical scheme: a negative pressure multifunctional underground water sampling device, including fixed base 1, the outer wall of fixed base 1 is provided with battery 2, plunger pump 3 and sampler 4 respectively, battery 2 is provided with electric quantity table 5, negative pressure table 6 and flow control switch 7 respectively, one end of battery 2 is provided with suction pipe 8 connected with plunger pump 3 and sampler 4 respectively.
[0016] The inside of sampler 4 is provided with baffle 9, one side of sampler 4 is provided with inlet pipe 12, one side of inlet pipe 12 is provided with shunt pipe 13, one end of inlet pipe 12 is provided with filter membrane support 14, the other side of filter membrane support 14 is provided with connecting pipe 16, one end of shunt pipe 13 and connecting pipe 16 is provided with steering valve 17, one side of steering valve 17 is provided with scale hose 18, the outer wall of scale hose 18 is provided with flowmeter 19, realize the effect that the disturbance is little and prevents volatile organic compounds from losing, and can be fixed depth control flow rate, to meet the DNAPL sampling demand, can carry out 0.45mu m filter membrane ultrafiltration work simultaneously, to meet the heavy metal sampling demand.
[0017] Further, the outer wall of sampler 4 is provided with suction port 10 and gas inlet 11 respectively, suction port 10 is matched with suction pipe 8, gas inlet 11 is matched with inlet pipe 12, which facilitates the communication with suction pipe 8 and inlet pipe 12.
[0018] Further, the outer wall of inlet pipe 12 and shunt pipe 13 is provided with first check valve 15, which facilitates the control of flow direction.
[0019] In use, the suction pipe 8 generates negative pressure by the plunger pump 3, and the underground water in the well pipe is sucked into the sampler 4 through the scale hose 18, since only the scale hose 18 is deep into the well pipe, the sampling pump component is outside, thereby realizing small disturbance to the water body, in this process, the plunger pump 3 is powered by the battery 2, thereby realizing convenient carrying, the battery 2 displays the power by the electric quantity table 5, the negative pressure in the suction pipe 8 is controlled by the flow control switch 7, so that the sampling flow rate meets the sampling requirements of various samples, wherein the flow rate is displayed by the negative pressure table 6, when collecting specific factors, the filter membrane in the filter membrane support 14 can be selected by the steering valve 17 to flow directly into the sampler 4 or to be filtered, the filter membrane is fixed in the middle by hinge and screw, and the filter membrane can be replaced by loosening the screw, the shunt pipe 13 and the connecting pipe 16 are provided with the first check valve 15, so that the water flow can only move in one direction, the scale hose 18 can collect samples with fixed depth according to the scale during the sampling process, which facilitates the collection of DNAPL and NAPL pollutants, by replacing the specific sampler 4 (such as Figure 2The volatile gas in the well pipe can be collected, when the sampler 4 is used, the negative pressure in the pipe inhales from the suction port 10 to move the baffle 9, so that the gas in the well pipe enters the sampler 4 from the gas inlet 11, thereby collecting the volatile gas.
[0020] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0021] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit it. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A multifunctional groundwater sampling device under negative pressure, comprising a fixing seat (1), characterized in that: The outer wall of the fixed seat (1) is respectively provided with a battery (2), a plunger pump (3) and a sampler (4), the battery (2) is respectively provided with an electricity meter (5), a negative pressure meter (6) and a flow control switch (7), one end of the battery (2) is provided with an air suction pipe (8) connected with the plunger pump (3) and the sampler (4) respectively; The inside of the sampler (4) is provided with a partition plate (9), one side of the sampler (4) is provided with an air inlet pipe (12), one side of the air inlet pipe (12) is provided with a shunt pipe (13), one end of the air inlet pipe (12) is provided with a filter membrane support (14), the other side of the filter membrane support (14) is provided with a connecting pipe (16), one end of the shunt pipe (13) and the connecting pipe (16) is provided with a diverter valve (17), one side of the diverter valve (17) is provided with a graduated hose (18), the outer wall of the graduated hose (18) is provided with a flow meter (19).
2. The negative pressure multifunctional groundwater sampling device according to claim 1, characterized in that: The outer wall of the sampler (4) is respectively provided with an air suction port (10) and an air inlet port (11), the air suction port (10) is matched with the air suction pipe (8), and the air inlet port (11) is matched with the air inlet pipe (12).
3. The negative pressure multifunctional groundwater sampling device according to claim 1, characterized in that: The outer wall of the air inlet pipe (12) and the shunt pipe (13) is provided with a first one-way valve (15).