Underground water low-flow undisturbed water quality sampler

Abstract

Compared with the prior art, the underground water low-flow disturbance-free water quality sampler has the advantages that disturbance to a water sample can be reduced during sampling, the extraction precision of the water sample is improved, the underground water low-flow disturbance-free water quality sampler comprises a controller, an air bag pump and a sampling container, and the controller comprises an air pump, a time control switch and a pressure gauge. The air bag pump comprises a communicating air port and a water outlet, an air outlet of the air pump is communicated with the communicating air port through an air pipe, the water outlet is connected with a water outlet pipe, and the water outlet pipe is communicated with the sampling container.

Description

Technical Field

[0001] The utility model relates to the technical field of groundwater sampling equipment, in particular to a low-flow, non-disturbance groundwater water quality sampler. Background Art

[0002] Groundwater sampling has important applications in environmental monitoring, water quality assessment and other fields. At present, the equipment commonly used for groundwater sampling includes Beyler tubes. Beyler tubes cause great disturbance to groundwater during use, which will cause the water body to be disturbed up and down, resulting in the mixing of water quality in the upper and lower layers of groundwater. Therefore, the sampled water will be affected by the disturbance of the upper and lower water layers, affecting the sampling accuracy of the water sample. Utility Model Content

[0003] The purpose of the utility model is to solve the above problems and provide a low-flow, non-disturbance water quality sampler for groundwater.

[0004] To achieve the above-mentioned purpose, the technical solution of the utility model is: a low-flow, undisturbed groundwater water quality sampler, comprising: a controller, an airbag pump and a sampling container, the controller comprising an air pump, a time-controlled switch and a pressure gauge, the airbag pump comprising a connecting air port and a water outlet, the air outlet of the air pump being connected to the connecting air port through an air pipe, the water outlet being connected to a water outlet pipe, and the water outlet pipe being connected to the sampling container.

[0005] Furthermore, the controller includes a box body and a mounting plate that is detachably arranged at the upper opening of the box body. The time switch and pressure gauge are both arranged on the mounting plate. The mounting plate is also provided with a quick-connect connector and a wiring terminal. The quick-connect connector is connected to the air outlet of the air pump, and the wiring terminal is connected to the air pump.

[0006] Furthermore, the model of the time-controlled switch is PNJ48.

[0007] Furthermore, the airbag pump is provided with a fixed pull ring at one end thereof having the air port connected thereto, a drawstring is provided on the fixed pull ring, the other end of the drawstring is connected to a tube clamp, and the tube clamp is arranged on the periphery of the trachea.

[0008] Furthermore, the distance from the air pipe to the communicating air port to the position clamped by the pipe clamp is smaller than the distance from the pipe clamp to the communicating air port.

[0009] Furthermore, there are two fixed pull rings, which are symmetrically arranged on both sides of the communicating air port, and the pipe clamp is connected to both fixed pull rings.

[0010] Furthermore, the fixed pull ring is detachably fixedly connected to the airbag pump.

[0011] The utility model discloses a low-flow, non-disturbance groundwater water quality sampler which has the following beneficial effects compared with the prior art: it can reduce the disturbance to the water sample during sampling and improve the extraction accuracy of the water sample. The utility model comprises: a controller, an airbag pump and a sampling container. The controller comprises an air pump, a time-controlled switch and a pressure gauge. The airbag pump comprises a connecting air port and a water outlet. The air outlet of the air pump is connected to the connecting air port through an air pipe. The water outlet is connected to a water outlet pipe, and the water outlet pipe is connected to the sampling container. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of a low-flow, undisturbed groundwater quality sampler of the utility model.

[0013] Figure 2 This is a structural schematic diagram of a controller in a low-flow, undisturbed groundwater quality sampler of the utility model.

[0014] Figure 3 This is a schematic diagram of the structure of the airbag pump in the utility model of a groundwater low flow non-disturbance water quality sampler Figure 1 .

[0015] Figure 4 This is a schematic diagram of the structure of the airbag pump in the utility model of a groundwater low flow non-disturbance water quality sampler Figure 2 .

[0016] Figure 5 for Figure 4 The figure shows a schematic diagram of the partially enlarged structure of point A in a low-flow, undisturbed groundwater quality sampler of the present invention.

[0017] Figure 6 This is a structural schematic diagram of a pipe clamp component in a low-flow, undisturbed groundwater quality sampler of the utility model.

[0018] In the figure: 1. Controller; 10. Box; 11. Cover; 101. Mounting plate; 12. Timer switch; 13. Pressure gauge; 14. Quick-connect connector; 15. Terminal blocks;

[0019] 2. Airbag pump; 21. Air connection port; 22. Water outlet; 23. Fixed pull ring; 24. Drawstring; 25. Pipe clamp; 251. Hanging ring; 252. Rigid pressure plate; 253. Elastic pad; 254. Edge plate; 250. Through hole;

[0020] 3. Sampling container; 4. Air pipe; 5. Water outlet pipe;

[0021] 6. Second pipe clamp; 61. Insert rod; 7. Power supply. DETAILED DESCRIPTION

[0022] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner, and thus only show components related to the present invention.

[0023] Please refer to Figure 1 、 Figure 4 The technical solution of the utility model is: a low-flow, undisturbed groundwater quality sampler, comprising: a controller 1, an airbag pump 2 and a sampling container 3, the controller 1 comprising an air pump, a time-controlled switch 12 and a pressure gauge 13, the airbag pump 2 comprising a connecting air port 21 and a water outlet 22, the air outlet of the air pump being connected to the connecting air port 21 through an air pipe 4, the water outlet 22 being connected to a water outlet pipe 5, and the water outlet pipe being connected to the sampling container 3.

[0024] Specifically, refer to Figure 1 In actual use, the controller 1 is connected to the airbag pump 2 through the air pipe 4, and the water outlet 22 of the airbag pump is connected to the water outlet pipe 5. Then the airbag pump 2 is placed in the sampling well and the airbag pump is lowered to the predetermined sampling depth. The upper end of the water outlet pipe is left outside the sampling well. The controller 1 includes an air pump, which can pump air into the intervals in the airbag pump. When pumping air, compressed air can enter between the outer shell and the airbag of the airbag pump 2, squeezing and compressing the airbag. One end of the airbag is connected to the water outlet 22, and a first one-way valve that allows the flowing medium to flow to the water outlet 22 in one direction is set between the airbag and the water outlet. The other end of the airbag is provided with a water suction valve. The second one-way valve that allows the flow medium to flow into the airbag in one direction is set between the water suction port and the airbag. When the airbag is compressed, the gas in the airbag is squeezed and discharged from the water outlet. When the air pump stops working, the air pressure in the airbag pump decreases, and the airbag rebounds under the action of its own elastic force, so that the airbag has a negative pressure effect, thereby sucking the external water into the airbag through the second one-way valve. The air pump works and stops reciprocatingly in this way to achieve the effect of pumping the water in the well out of the water outlet. The water can be transported through the water outlet pipe 5 and collected by the sampling container 3, thereby achieving the sampling effect. This sampling method can reduce the disturbance to the underground water sample and improve the accuracy of sampling.

[0025] Furthermore, as a specific embodiment, the controller 1 includes a box body 10 and a mounting plate 101 that is detachably arranged at the upper opening of the box body 10. The time switch 12 and the pressure gauge 13 are both arranged on the mounting plate 101. The mounting plate 101 is also provided with a quick-connect connector 14 and a wiring terminal 15. The quick-connect connector 14 is connected to the air outlet of the air pump, and the wiring terminal 15 is connected to the air pump.

[0026] Specifically, by setting up a box body, the air pump can be integrated into the box body, and by setting up a mounting plate 101, the mounting plate can be detachably set at the opening position of the box body, and then the time control switch, pressure gauge 13, quick connector 14 and wiring terminal 15 are integrated on the mounting plate, which can make the entire controller structure more reasonable and operational. It should be noted that the quick connector 14 is an air pipe quick connector, one end of which is connected to the air outlet of the air pump, which is convenient for quick connection and disassembly with the air pipe 4, thereby improving the convenience of use. The wiring terminal 15 is used to connect the air pump to the external power supply 7.

[0027] Furthermore, the controller is equipped with a time-controlled switch, which is connected to the air pump. The time-controlled switch can control the working parameters of the air pump, such as the duration of each operation and the duration of the interval between two adjacent operations, through the time-controlled switch, and can adjust the working parameters of the air pump according to the sampling depth. For example, when the sampling depth is deeper, the water pressure pumped to the ground is high, so the air pressure applied to the airbag pump by the air pump is also higher. At this time, the duration of each pumping of the air pump is controlled to increase, and the volume of pumped air is increased, thereby increasing the air pressure in the airbag pump. The duration of each operation of the air pump can be adjusted according to actual operating experience. The deeper the sampling depth, the longer the duration of each pumping, and the longer the duration of the interval between two adjacent operations. By setting a pressure gauge, the pumping pressure of the air pump can be observed.

[0028] Furthermore, as a specific implementation, the model of the time-controlled switch 12 is PNJ48.

[0029] Furthermore, as a preferred embodiment, a quick-connect connector is also provided at the air communication port 21 to facilitate quick connection with the air pipe 4.

[0030] Further, as an embodiment, referring to Figure 1 、 Figure 4-Figure 6 The airbag pump 2 is provided with a fixed pull ring 23 at one end of the air port 21, and a pull rope 24 is provided on the fixed pull ring 23. The other end of the pull rope 24 is connected to a tube clamp 25, and the tube clamp 25 is clamped on the periphery of the trachea 4.

[0031] Specifically, the present application provides a tube clamp 25, which is clamped around the periphery of the trachea 4, thereby being connected to the trachea 4. The tube clamp 25 is connected to a pull rope 24, and a fixed pull ring 23 is provided at the end of the airbag pump 2. The other end of the pull rope 24 is connected to the fixed pull ring 23, and the clamping position of the tube clamp 25 is controlled to ensure that the trachea between the tube clamp and the connecting air port is not subject to tension when the pull rope is under force. Through this setting method, when the airbag pump is set in the sampling well, the airbag pump can be gradually lowered to the predetermined depth of the sampling well by pulling the trachea 4, without the need to additionally set up a wire rope to lower the airbag pump.

[0032] As a preferred embodiment, refer to Figure 5 、 Figure 6 The tube clamp 25 includes two tube clamp parts, which include a rigid pressure plate 252. The rigid pressure plate 252 is a semi-ring structure with a central angle of 180°. An elastic pad 253 is provided on the inner surface of the rigid pressure plate. The elastic pad is made of rubber material. Edge plates 254 are provided at both ends of the rigid pressure plate. Through holes 250 are provided on the edge plates. A hanging ring 251 is welded on the rigid pressure plate of a tube clamp part, which is easier to connect with the pull rope through the hanging ring. During work, the two tube clamp parts are set on both sides of the trachea 4 to clamp the trachea, and then the screws are passed through the through holes 250 of the two tube clamp parts in turn, and then locked, so that the elastic pad 253 is in close contact with the side wall of the trachea, thereby achieving the clamping purpose, and by setting the elastic pad, it can be in close contact with the trachea wall, which can not only ensure friction but also protect the trachea.

[0033] Furthermore, as a specific embodiment, the distance between the trachea and the communicating port 21 and the position where the trachea is clamped by the tube clamp 25 is smaller than the distance between the tube clamp 25 and the communicating port 21. This arrangement can prevent the trachea 4 between the tube clamp and the airbag pump from being subjected to tension, thereby preventing the trachea from separating from the communicating port 21.

[0034] Furthermore, as a preferred embodiment, two fixing pull rings 23 are provided, and the two fixing pull rings 23 are symmetrically arranged on both sides of the communicating air port 21, and the pipe clamp 25 is connected to both fixing pull rings 23. This arrangement can improve the uniformity of force.

[0035] Furthermore, as a preferred embodiment, the fixing pull ring 23 is detachably fixedly connected to the airbag pump 2. Specifically, a threaded hole can be drilled on the housing of the airbag pump, and the fixing pull ring is threadedly connected to the threaded hole.

[0036] Further, as a specific embodiment, refer to Figure 1 , and also includes a second pipe clamp 6 for clamping the water pipe. The second pipe clamp can adopt a structure consistent with the structure of the pipe clamp 25, and a rigid pressure plate of a pipe clamp component of the second pipe clamp is welded with an insertion rod 61, and the axis of the insertion rod is arranged parallel to the axis of the second pipe clamp. Through this arrangement, when sampling, the insertion rod 61 can be vertically inserted into the ground, the end of the water pipe can be clamped in the second pipe clamp with the water pipe mouth facing downward, and then the sampling container can be placed under the water pipe mouth to facilitate sampling and make it more convenient to use.

[0037] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A low-flow, non-disturbance groundwater sampler, characterized in that: include: A controller (1), an airbag pump (2) and a sampling container (3), wherein the controller (1) includes an air pump, a time-controlled switch (12) and a pressure gauge (13), and the airbag pump (2) includes a connecting air port (21) and a water outlet (22), wherein the air outlet of the air pump is connected to the connecting air port (21) via an air pipe (4), and the water outlet (22) is connected to a water outlet pipe (5), and the water outlet pipe is connected to the sampling container (3).

2. A groundwater low-flow undisturbed water quality sampler according to claim 1, characterized in that: The controller (1) comprises a box body (10) and a mounting plate (101) detachably arranged at an upper opening of the box body (10); the time-controlled switch (12) and the pressure gauge (13) are both arranged on the mounting plate (101); a quick-connect connector (14) and a wiring terminal (15) are also arranged on the mounting plate (101); the quick-connect connector (14) is communicated with an air outlet of an air pump, and the wiring terminal (15) is connected to the air pump.

3. A groundwater low flow undisturbed water quality sampler according to claim 1, characterized in that: The model of the time-controlled switch (12) is PNJ48.

4. A groundwater low-flow undisturbed water quality sampler according to claim 1, characterized in that: The airbag pump (2) is provided with a fixed pull ring (23) at one end of the air port (21), a pull rope (24) is provided on the fixed pull ring (23), and the other end of the pull rope (24) is connected to a tube clamp (25), and the tube clamp (25) is clamped on the periphery of the trachea (4).

5. A groundwater low-flow undisturbed water quality sampler according to claim 4, characterized in that: The distance between the air pipe (4) and the communicating air port (21) and the position where it is clamped by the pipe clamp (25) is smaller than the distance between the pipe clamp (25) and the communicating air port (21).

6. A groundwater low-flow undisturbed water quality sampler according to claim 5, characterized in that: Two fixed pull rings (23) are provided, and the two fixed pull rings (23) are symmetrically arranged on both sides of the communicating air port (21), and the pipe clamp (25) is connected to both fixed pull rings (23).

7. A groundwater low-flow undisturbed water quality sampler according to claim 6, characterized in that: The fixed pull ring (23) is detachably fixedly connected to the airbag pump (2).

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