Geogas nano metal particle measuring instrument

Abstract

The utility model provides a geogas nano metal particle measuring instrument, which relates to the technical field of geogas metal sample collection, and comprises a drill rod, which is internally provided with a cavity for collecting geogas and can be inserted into a soil body; the air extracting piece comprises a box body, an air extracting pump and a sampling connector, the box body is provided with a box cover capable of being opened, the air extracting pump is arranged in the box body, and the sampling connector is provided with an air inlet pipe and an air outlet pipe which are arranged in a penetrating mode. The gas washing bottle has the beneficial effects that the contact area of gas and a solution is obviously increased through the design of the extension pipe and the bubbler in the gas washing bottle, and the trapping efficiency of metal ions is improved. Meanwhile, a magnetic stirring instrument is arranged in the device, the solution can be uniformly stirred in the collecting process, the metal ion trapping effect is further optimized, the gas washing bottle forms an independent storage container through an end cover, the gas washing bottle can be directly used as a sampler by replacing a sampling connector, the solution does not need to be cleaned or poured out, and the contact time of the solution and air is shortened.

Description

Technical Field

[0001] This utility model relates to the field of ground gas metal sample collection technology, and in particular to a ground gas nano-metal particle measuring instrument. Background Technology

[0002] The measurement of nano-metal particles in the ground atmosphere is mainly divided into two types: active and passive. The active ground atmosphere method (negative pressure extraction method) mainly consists of a suction rod, filter, collection and extraction device, etc. The collection agent mainly includes two types: liquid and solid. The liquid collection agent mainly uses ultrapure dilute acid solution. The core component of the ground atmosphere equipment based on liquid collection agent is the gas washing device, which mostly uses a U-shaped bottle as the gas washing bottle to capture nano-particles by bubbling.

[0003] Based on the above background, most of the currently used supplementary collection devices have at least the following technical problems during use: the supplementary collection device uses a conventional U-shaped bottle, and after a sample collection, the process of pouring out the solution containing the sample and cleaning the supplementary collection device for reuse can easily expose the sample and the solution of the supplementary sample to the air, causing contamination. In addition, the filters and air extraction devices configured with the collection device need to be assembled on-site for use. When transferring between multiple sampling points, the equipment needs to be transferred sequentially, resulting in low sampling efficiency. Utility Model Content

[0004] In view of this, embodiments of the present invention provide a ground-atmosphere nanoparticle measuring instrument to solve the problem of easy contamination in current active ground-atmosphere metal measurement and collection samples. Embodiments of the present invention provide a ground-atmosphere nanoparticle measuring instrument for active ground-atmosphere metal collection, comprising:

[0005] A drill rod with an internal cavity for collecting ground gas; the drill rod can be inserted into the soil.

[0006] An air extraction device includes a housing, an air pump, and a sampling connector. The housing has an openable cover. The air pump is located inside the housing. The sampling connector has an inlet pipe and an outlet pipe that pass through it. One end of the air pump is connected to the probe and the other end is connected to the inlet pipe.

[0007] A magnetic stirrer is installed inside the box cover, and the box cover has a placement hole corresponding to the drive end of the magnetic stirrer;

[0008] The system includes multiple gas washing bottles, each of which includes a bottle body and an end cap detachably connected to the bottle body. The bottle body is provided with a movable magnet. The bottle body of each gas washing bottle can be placed in the placement hole and connected to the sampling connector, so that the air inlet tube is inserted into the lower part of the bottle body. The magnet inside the bottle body can be driven to rotate by the magnetic stirrer to stir the solution inside the bottle body.

[0009] Furthermore, the air intake pipe is connected to the exhaust port end of the drill rod via a filter.

[0010] Furthermore, the drill rod, the filter, the gas washing bottle, and the extraction box are all connected by air pipes.

[0011] Furthermore, the box has an internal cavity in which the filter and the air tube can be housed and stored.

[0012] Furthermore, the housing is provided with a gas washing bottle mounting base, and the top of the gas washing bottle mounting base has multiple evenly arranged grooves corresponding to the gas washing bottle.

[0013] Furthermore, the bottle body is provided with an extension tube, one end of which is connected to the air inlet pipe, and the other end extends to the bottom of the bottle body.

[0014] Furthermore, a bubbler is provided at one end of the air inlet pipe located at the bottom of the bottle body.

[0015] Furthermore, the air intake pipe is located at the axial position of the sampling connector.

[0016] Furthermore, at least one clamp is provided on the inner wall of the box, and each bottle can be correspondingly clamped to the clamp.

[0017] Furthermore, a handle is hinged to the front of the box.

[0018] Furthermore, both the lid and the body of the box are equipped with latches.

[0019] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows: The ground gas nanoparticle measuring instrument of this utility model significantly increases the contact area between gas and solution through the design of the extension tube and bubbler inside the gas washing bottle, thereby improving the metal ion collection efficiency. Simultaneously, the device has a built-in magnetic stirrer, which can uniformly stir the solution during collection, further optimizing the metal ion collection effect. The gas washing bottle forms an independent storage container through the end cap, and can be directly used as a sampler by replacing the sampling connector, eliminating the need for cleaning or pouring out the solution, reducing the contact time between the solution and air, and lowering the risk of solution contamination. The device uses a probe inserted into the soil to collect ground gas, and provides power through an extraction device to ensure stable gas flow. The interior of the box has a storage cavity and a gas washing bottle mounting base, facilitating the storage and fixation of the filter, gas tube, and gas washing bottle. At the same time, the handle design on the front of the box enhances the portability of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the ground-atmosphere nano-metal particle measuring instrument of this utility model;

[0021] Figure 2 This is a three-dimensional structural view of the air extraction component of the ground-atmosphere nano-metal particle measuring instrument of this utility model;

[0022] Figure 3 This is a three-dimensional view of the collection bottle structure of the ground-atmosphere nano-metal particle measuring instrument of this utility model;

[0023] Figure 4 This utility model is a ground-atmosphere nano-metal particle measuring instrument. Figure 2 Enlarged partial sectional view of the structure at point A in the middle.

[0024] In the diagram: 1. Drill rod; 2. Filter; 3. Gas washing bottle; 31. Bottle body; 32. Sampling connector; 321. Inlet pipe; 322. Exhaust port; 33. End cap; 34. Magnetic element; 35. Bubble blower; 4. Gas pipe; 5. Extraction device; 51. Box body; 52. Air pump; 53. Box cover; 54. Gas washing bottle mounting base; 55. Handle; 6. Magnetic stirrer; 61. Magnet. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.

[0026] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0027] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0029] In the description of this utility model, it should be noted that the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0030] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Please refer to Figure 1 An embodiment of this utility model provides a ground-atmosphere nano-metal particle measuring instrument, including a drill rod 1, an air extraction component 5, and multiple gas washing bottles 3.

[0032] The drill rod 1 has a cavity for collecting ground gas, which can be inserted into the soil to collect ground gas. The exhaust port of the drill rod 1 is connected to the air inlet pipe 321 on the gas washing bottle 3 through the filter 2.

[0033] In practice, first use a steel rod to drill a hole about 2-3 cm in diameter and 70-100 cm deep at the sampling point. After pulling out the steel rod, quickly insert the rod 1 into the hole until it is less than 50 cm deep. At the same time, use a rubber stopper to move downwards to seal the hole to prevent air from entering and causing contamination. Then lift the air extraction rod upwards to ensure that the air inlet at the bottom of the extraction rod is completely open.

[0034] Please see Figure 2 In this embodiment, the extraction component 5 includes a housing 51, an extraction pump 52, and a sampling connector 32. The housing 51 is hinged with an openable cover 53. The extraction pump 52 is housed inside the housing 51. A magnetic stirrer 6 is installed inside the cover 53 to stir the solution during the collection process, ensuring that the ground gas increases its residence time in the solution as the solution rotates.

[0035] The magnetic stirrer 6 is embedded inside the cover 53, and the magnet end of the magnetic stirrer 6 is provided with a placement hole for inserting the gas washing bottle 3.

[0036] By incorporating a magnetic stirrer 6, the magnetic stirring rotation drives the liquid inside the gas washing bottle to form a vortex, ensuring full contact between the gas and the absorbent, increasing the effective contact area, and thus improving the dissolution or reaction rate of gaseous impurities. Simultaneously, it maintains liquid concentration uniformity; stirring prevents localized concentration gradients caused by static absorption (such as excessively rapid surface reactions or absorption failure at the bottom), ensuring the overall activity of the absorbent. The turbulent liquid generated by stirring shears the bubbles produced by the bubbler 35, making them smaller and more evenly distributed, thereby increasing the gas-liquid contact area and improving mass transfer efficiency. It can also suppress the formation of large bubbles to some extent; stirring disrupts the tendency of bubbles to coalesce, reducing liquid splashing or insufficient gas-liquid contact time caused by the rapid rise of large bubbles.

[0037] The pumping power unit is equipped with a miniature brushed vacuum pump, which uses negative pressure mode for pumping and has a timer function to quantitatively control the pump's running time and gas flow rate, ensuring that the sampling time and gas volume at each sampling point are the same.

[0038] Please see Figure 4 It should be noted that when in use, the gas washing bottle 3 is placed inside the vacuum component 5 and located in the placement hole of the magnetic stirrer 6. The gas washing bottle 3 includes a bottle body 31 and an end cap 33. A movable magnet 34 is placed inside the bottle body 31.

[0039] The magnetic stirrer 6 has a rotating magnet 61 inside the placement hole for driving the magnetic element 34. The magnet 61 includes multiple cylindrical magnetic columns, with each pair of magnetic columns corresponding to one end of the magnetic element 34. After the bottle 31 is placed in the placement hole, the magnetic element 34 is attracted by the magnet 61 inside the bottle 31 and can rotate with the magnet 61. The magnet 61 is connected and driven by the built-in motor of the magnetic stirrer 6 through a magnetic coupling.

[0040] The filter 2 in this device uses a PTFE gas clamp and a 0.45-micron hydrophobic PTFE microporous filter membrane. The hydrophobic PTFE microporous filter membrane has the effect of being permeable to air but not water, and is mainly used for gas filtration. It can effectively filter dust particles with a particle size greater than 0.45 microns to prevent sample contamination.

[0041] In order to deliver the extracted ground gas to the bottom of the solution, one end of the bottle 31 extends to the bottom of the bottle 31 and is equipped with a bubbler 35.

[0042] The bubbler 35 allows the gas entering the bottle 31 to form bubbles, increasing the contact area between the gas and the solution and improving the capture efficiency of metal ions.

[0043] Please see Figure 3 In this embodiment, the gas washing bottle 3 is used as an independent storage container by means of the end cap 33. By replacing the sampling connector 32, the gas washing bottle 3 can be used as a sampler, thus eliminating the need to clean the gas washing bottle 3 and pour out the solution in the gas washing bottle 3 for collection.

[0044] More specifically, the bottle body 31 uses a 50ml high borosilicate glass bottle as the gas washing bottle body. The end cap 33 and the connector 31 both use the same PTFE screw cap that is common to bottle bodies of the same specifications. The PTFE gasket is built in to prevent gas leakage. The 50ml high borosilicate glass bottle also serves as a sample storage bottle.

[0045] Please see Figure 2In this embodiment, the box 51 has an internal cavity in which the filter 2 and the air tube 4 can be stored. When the box 51 is fastened with the box cover 53, the device except for the rod 1 can be easily built into it for easy carrying. The box 51 is also provided with a gas washing bottle mounting base 54. The top of the gas washing bottle mounting base 54 has multiple evenly arranged grooves corresponding to the gas washing bottles 3, which facilitates the installation and fixation of multiple gas washing bottles 3.

[0046] It should be noted that the front of the case 51 is hinged with a handle 55 for easy carrying of the entire device. Both the case lid 53 and the case 51 are equipped with latches to ensure that the case lid 53 and the case 51 are tightly connected to prevent accidental opening during use.

[0047] When using the ground-atmosphere nano-metal particle measuring instrument of this invention, firstly, use a steel rod to drill a hole at the sampling point with a diameter of approximately 2-3 cm and a depth of 70-100 cm. After pulling out the steel rod, quickly insert the rod 1 into the hole until it reaches a depth of less than 50 cm. At the same time, move the rubber stopper downwards to seal the hole opening, and then lift the rod upwards to ensure that the air inlet at the bottom of the suction rod is completely open. Connect the rod 1, filter 2, and sampling connector 32 through the air pipe 4 and the suction pump 52. First, set the suction time, generally 10-30 minutes per measurement point. Then, turn on the magnetic stirrer 6 and set a suitable rotation speed and air pump gas flow rate (generally 1-2 L / min). Then, the vacuum pump 52 is started. At this time, the pump will draw gas at a gas flow rate of 1-2L / min. The gas is drawn from the inlet end of the probe 1 and discharged from the exhaust port. After being filtered by the filter 2, it enters the body 31 of the gas washing bottle 3. In order to ensure the accumulation of nano-metal particles in the nano gas, the extraction time for each sample is generally set to at least 10 minutes, and the accumulated gas is at least more than 20L. The gas forms bubbles through the extension tube 34 and the bubbler 35, which fully contact the solution in the body 31. The metal ions are captured by the solution. After the collection is completed, the end cap 33 is quickly replaced on the top of the body 31, and the gas washing bottle 3 is used as a container to reduce the contamination of the solution by the air.

[0048] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0049] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ground-atmosphere nano-metal particle measuring instrument, characterized in that, The utility model relates to a soil sampling device, which comprises: a drill rod (1) with a cavity for collecting soil gas, which can be inserted into soil; an air extractor (5) comprising a box (51) with an openable box cover (53), an air pump (52) arranged in the box (51), and a sampling connector (32) with a gas inlet pipe (321) and a gas outlet pipe (322) arranged therethrough, one end of the air pump (52) being connected to the drill rod (1) and the other end being connected to the gas inlet pipe (321); a magnetic stirrer (6) arranged in the box cover (53), the box cover (53) being provided with a placement hole corresponding to the driving end of the magnetic stirrer (6); and a plurality of gas washing bottles (3), each of which comprises a bottle body (31) and a cap (33) detachably connected to the bottle body (31), the bottle body (31) being provided with a movable magnetic sub (34) therein, the bottle body of each of the gas washing bottles (3) being capable of being placed in the placement hole and connected to the sampling connector (32) so that the gas inlet pipe (321) is inserted into the lower part of the bottle body (31), and the magnetic sub (34) in the bottle body (31) can be driven to rotate by the magnetic stirrer (6) to stir the solution in the bottle body (31).

2. The apparatus according to claim 1, wherein the apparatus is characterized by: The gas inlet pipe (321) is connected to the exhaust hole end of the drill rod (1) through a filter (2).

3. The apparatus according to claim 2, wherein the apparatus is characterized by: The drill rod (1), the filter (2), the gas washing bottles (3), and the air extractor (5) are connected through gas pipes (4).

4. The apparatus according to claim 3, wherein the apparatus is characterized by: The box (51) has a cavity in the interior, and the filter (2) and the gas pipes (4) can be accommodated in the cavity for storage.

5. The apparatus according to claim 1, wherein the apparatus is characterized by: The box (51) is provided with a gas washing bottle mounting seat (54) with a plurality of grooves uniformly arranged on the top and corresponding to the gas washing bottles (3).

6. The apparatus according to claim 1, wherein the apparatus is characterized by: The gas inlet pipe (321) is provided with a bubbler (35) at one end on the bottom of the bottle body (31).

7. The ground-atmosphere nano-metal particle measuring instrument as described in claim 6, characterized in that: The gas inlet pipe (321) is located at the center of the sampling connector (32).

8. The apparatus according to claim 1, wherein the apparatus is characterized by: The inner wall of the box (51) is provided with at least one clamp, and each of the bottle bodies (31) can be clamped to the clamp.

9. The apparatus according to claim 1, wherein the apparatus is characterized by: The front of the box (51) is hingedly connected with a handle (55).

10. The apparatus of claim 1, wherein: the nanometer metal particle measurement instrument is a ground surface gas nanometer metal particle measurement instrument. The box cover (53) and the box (51) are both provided with a lock catch.

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