Trapping device for enhancing trapping efficiency of geogas nano-metal particles

Abstract

The utility model provides a trapping device for enhancing the trapping efficiency of geogas nano-metal particles, which relates to the technical field of geochemical measurement and comprises a trapping cylinder, a trapping pipe and a dispersion filter disc, the trapping barrel is filled with trapping liquid, an extraction opening is formed in the top of the trapping barrel, the gas inlet end of the trapping pipe is located outside the trapping barrel, and the gas outlet end of the trapping pipe extends into the trapping pipe. The trapping device has the beneficial effects that the gas in the stratum can be continuously pumped into the trapping barrel through the trapping pipe by pumping the gas from the gas pumping opening of the trapping device, so that the trapping liquid can trap nano metal particles in the gas in the stratum. The bubbler is arranged downwards, so that the migration path of the gas to be washed in the trapping liquid can be prolonged; the bubbler at the gas outlet end of the trapping pipe and the dispersing filter disc above the bubbler can disperse the gas overflowing from the gas outlet end of the trapping pipe into tiny bubbles, the contact area of the gas to be washed and the trapping liquid is increased, and therefore the trapping efficiency of the nano metal particles in the gas in the stratum is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of geochemical measurement, in particular to a capture device for enhancing the capture efficiency of ground-gas nano-metal particles. Background Art

[0002] Geogas nanoparticle detection is one of the more effective deep-penetrating geochemical measurement techniques. Its main principle is to capture various nanoparticles of metal associated with concealed ore bodies, carried up from the overburden by geogas flows. High-resolution analysis of the content of different elements is then used to detect anomalies. The geochemical anomalies obtained by this technique have the characteristics of deep prospecting depth and direct indication of concealed ore bodies beneath the overburden. Recent research has also confirmed the presence of ultrafine or nanoparticles of metal in gases (geogas flows). Due to their enormous surface energy, these mobile nanoparticles can adsorb onto the surfaces of gas molecules and migrate vertically in the geogas flow in a gas-like form, penetrating the overburden above the ore body and reaching the surface. Some nanoparticles can remain in the soil atmosphere for long periods of time, while others are adsorbed by clay minerals or oxide films in the soil.

[0003] Currently, the main collection methods used for measuring nano-metal particles in ground air are active and passive. The passive ground air collection method mainly uses a plastic funnel, which uses a polystyrene film as the capture material. When in use, the film is covered on a glass sheet, and the two are placed together at the end of the funnel's air outlet. A plastic cup is then placed on top. The entire device is buried about 40-50 cm underground for about two months to capture nano-metal particles. However, the collection efficiency of this device is too low, and the equipment is easily lost, which has led to the method not being widely promoted. The active ground method requires extracting gas from the formation and then using a capture device to capture the nano-metal particles therein. However, existing capture devices have difficulty in fully absorbing the metal particles in the gas, and the capture element may be lost. Therefore, in order to improve the accuracy of nano-metal particle detection in ground airflow, a capture device that can fully capture nano-metal particles in ground airflow is needed. Utility Model Content

[0004] In view of this, the present invention provides a capture device for enhancing the capture efficiency of ground-gas nano-metal particles, comprising a capture cylinder, a capture pipe, and a dispersion filter;

[0005] The bottom of the collecting cylinder is provided with a liquid outlet, the top of the collecting cylinder is provided with an air extraction port, and the internal cavity of the collecting cylinder is an air washing cavity;

[0006] The two ends of the capture pipe are respectively an air inlet end and an air outlet end, the air inlet end of the capture pipe is located outside the capture cylinder, and the air outlet end of the capture pipe passes through the side wall of the capture cylinder and extends to the lower part of the air washing chamber;

[0007] A bubbler is provided at the gas outlet end of the collection tube. The dispersion filter is disposed in the scrubbing chamber. The edge of the dispersion filter is supported on the inner wall of the collection tube, and the dispersion filter is located above the bubbler.

[0008] Further, the top of the collection cylinder is open, and a spherical cover is provided at the top of the collection cylinder. The spherical cover closes the top opening of the collection cylinder, and the air extraction port is provided at the top of the spherical cover.

[0009] Further, the bottom of the collection cylinder is funnel-shaped, and a drain pipe is provided at the bottom of the collection cylinder. The liquid outlet is located at the lower end of the drain pipe.

[0010] Further, a drain valve is also provided on the drain pipe.

[0011] Further, the bubbler includes a bubbling housing. The end of the bubbling housing is connected to the gas outlet end of the collection tube. A plurality of bubbling air holes are provided at the lower part of the bubbling housing, and the bubbling housing is also filled with sand core particles.

[0012] Further, the scrubbing chamber is filled with a collection liquid, and the dispersion filter is located in the collection liquid.

[0013] Further, both the collection cylinder and the collection tube are made of high borosilicate glass.

[0014] Further, the dispersion filter includes a fixing ring and a dispersion filter element. An installation groove is provided on the inner wall of the fixing ring. The edge of the dispersion filter element is limited in the installation groove. An elastic ring is provided on the outer wall of the fixing ring, and the fixing ring presses the elastic ring against the inner wall of the collection cylinder.

[0015] Further, the dispersion filter element includes a blocking net and sand core particles filled in the blocking net.

[0016] Further, a connecting column is also provided on the outer wall of the collection cylinder. The two ends of the connecting column are respectively connected to the collection cylinder and the collection tube.

[0017] The beneficial effects of the trapping device for enhancing the trapping efficiency of nano-metal particles in ground gas provided by the present utility model are as follows: The trapping device includes a trapping cylinder, a trapping pipe, and a dispersion filter; a trapping liquid is contained in the trapping cylinder, and an air extraction port is provided at the top of the trapping cylinder. The intake end of the trapping pipe is located outside the trapping cylinder and is used to connect a gas extraction probe inserted into the formation. The outlet end of the trapping pipe extends into the trapping cylinder. The gas in the formation can be continuously drawn into the trapping cylinder through the trapping pipe from the air extraction port at the top of the trapping cylinder, and all the gas passes through the trapping liquid. The trapping liquid can trap the nano-metal particles in the gas in the formation. And a bubbler is connected to the outlet end of the trapping pipe, and a dispersion filter is provided above the bubbler. The bubbler is arranged downward to extend the migration path of the gas to be washed (the gas in the formation) in the trapping liquid. At the same time, both the bubbler and the dispersion filter can disperse the gas overflowing from the outlet end of the trapping pipe into tiny bubbles, which can increase the contact area between the gas to be washed and the trapping liquid, enabling the nano-metal particles in the gas to be washed to be fully absorbed by the trapping liquid, thereby effectively improving the trapping efficiency of the nano-metal particles in the gas in the formation and further improving the detection accuracy of the nano-metal particles in the ground gas flow. Description of the Drawings

[0018] Figure 1 FIG. is a schematic diagram of the overall structure of a trapping device for enhancing the trapping efficiency of nano-metal particles in ground gas according to an embodiment of the present utility model.

[0019] Figure 2 FIG. is a schematic diagram of the internal structure of a trapping device for enhancing the trapping efficiency of nano-metal particles in ground gas according to an embodiment of the present utility model.

[0020] Figure 3 is Figure 2 an enlarged view of part A in

[0021] In the figure: 1 - trapping cylinder, 11 - drain pipe, 12 - drain valve, 2 - trapping pipe, 3 - bubbler, 31 - bubbling air holes, 4 - spherical cover, 41 - air extraction port, 5 - connecting column, 6 - dispersion filter, 61 - fixing ring, 62 - blocking net, 63 - elastic ring. Detailed Embodiments

[0022] To make the objectives, technical solutions, and advantages of the present utility model clearer, the embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0023] Please refer to Figures 1 to 3 , a trapping device for enhancing the trapping efficiency of nano-metal particles in ground gas, including a trapping cylinder 1, a trapping pipe 2, and a dispersion filter 6.

[0024] The bottom of the capture cylinder 1 is provided with a liquid outlet, the top of the capture cylinder 1 is provided with an air extraction port 41, and the internal cavity of the capture cylinder 1 is a gas washing cavity; a capture liquid is contained in the gas washing cavity, and the capture liquid is used to absorb nano-metal particles in the gas passing through it.

[0025] Both ends of the capture pipe 2 are respectively an air inlet end and an air outlet end. The air inlet end of the capture pipe 2 is located outside the capture cylinder. The air outlet end of the capture pipe 2 passes through the side wall of the capture cylinder 1 and extends to the lower part inside the gas washing cavity; a bubbler 3 is provided at the air outlet end of the capture pipe 2, and a dispersion filter 6 is arranged in the gas washing cavity. Both the bubbler 3 and the dispersion filter 6 are immersed in the capture liquid. The edge of the dispersion filter 6 is supported on the inner wall of the capture pipe, and the dispersion filter 6 is located above the bubbler 3, so that all the gas in the lower part of the gas washing cavity will pass through the dispersion filter 6 during the upward migration process.

[0026] When the capture device works, the air extraction port 41 at the top of the capture cylinder 1 is connected to an air extraction device, and the air inlet end of the capture pipe 2 is connected to a gas sampling probe. The gas sampling probe is inserted into the formation, and air sampling holes are sealed on the side wall of the gas sampling probe; the air extraction device extracts air from the air extraction port 41, which can make the gas in the formation (underground flowing gas) continuously enter from the air inlet end of the capture pipe 2 and overflow downward from the bubbler 3 at the air outlet end of the capture pipe 2. The overflowing gas moves upward and is finally extracted from the air extraction port 41. During the above process, all the underground flowing gas passes through the capture liquid, and the capture liquid can capture nano-metal particles in the gas in the formation. And the downward setting of the bubbler can extend the migration path of the gas to be washed (underground flowing gas) in the capture liquid. At the same time, both the bubbler and the dispersion filter can disperse the gas overflowing from the air outlet end of the capture pipe into tiny bubbles, which can increase the contact area between the underground flowing gas and the capture liquid, so that the nano-metal particles in the gas to be washed can be fully absorbed by the capture liquid, thereby effectively improving the capture efficiency of nano-metal particles in the gas in the formation, and further improving the detection accuracy of nano-metal particles in the underground flowing gas.

[0027] Preferably, both the capture cylinder 1 and the capture pipe 2 are made of high borosilicate glass. A connecting column 5 is further provided on the outer wall of the capture cylinder 1. Both ends of the connecting column 5 are respectively connected to the capture cylinder 1 and the capture pipe 2. The capture cylinder, the capture pipe and the connecting column 5 are an integrated structure.

[0028] Preferably, the top of the capture cylinder 1 is open. A spherical cover 4 is provided at the top of the capture cylinder 1. The spherical cover 4 closes the top opening of the capture cylinder 1. The air extraction port 41 is arranged at the top of the spherical cover 4. The connection parts between the spherical cover 4 and the inner wall of the top opening of the capture cylinder 1 are all frosted structures, so that the gas washing cavity in the capture cylinder 1 can be kept in a closed state, improving the air extraction efficiency of the air extraction device for the gas washing cavity.

[0029] Further, the bottom of the collecting cylinder 1 is funnel-shaped. A liquid discharge pipe 11 is provided at the bottom of the collecting cylinder 1, and the liquid outlet is located at the lower end of the liquid discharge pipe 11. A liquid discharge valve 12 is further provided on the liquid discharge pipe 11. A liquid discharge valve element is provided in the middle of the liquid discharge valve 12, and the liquid discharge valve element is made of polytetrafluoroethylene material, so as to avoid contamination of the collected liquid.

[0030] Preferably, the bubbler 3 includes a bubbling housing, the bubbling housing is connected to the gas outlet end of the collecting pipe, a plurality of bubbling air holes 31 are provided at the lower part of the bubbling housing, and the bubbling housing is also filled with sand core particles. The bubbling housing can make the gas overflow downward from the collecting pipe, extending the migration path of the gas to be washed in the collected liquid. The sand core particles can improve the bubble dispersion effect.

[0031] Preferably, the dispersion filter 6 includes a fixing ring 61 and a dispersion filter element. An installation groove is provided on the inner wall of the fixing ring 61, and the edge of the dispersion filter element is limited in the installation groove. An elastic ring 63 is provided on the outer wall of the fixing ring 61, and the fixing ring 61 presses the elastic ring 63 against the inner wall of the collecting cylinder 1. The dispersion filter element includes a blocking net 62 and sand core particles filled in the blocking net 62. The elastic ring can fix the dispersion filter 6 to the inner wall of the collecting cylinder 1 through friction, so that the dispersion filter 6 is convenient to install.

[0032] In this article, the front, back, up, down and other orientation words are defined based on the positions of the components in the drawings and the positions of the components relative to each other, only for the sake of clarity and convenience of expressing the technical solution. It should be understood that the use of the orientation words should not limit the scope of protection claimed in this application.

[0033] Without conflict, the above-mentioned embodiments and the features in the embodiments in this article can be combined with each other.

[0034] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A trapping device for enhancing the trapping efficiency of earth-gas nano metal particles, characterized in that: It includes a collection cylinder, a collection pipe, and a dispersion filter; The bottom of the collection cylinder is provided with a liquid outlet, the top of the collection cylinder is provided with an air extraction port, and the internal cavity of the collection cylinder is a gas washing cavity; Both ends of the collection pipe are respectively an air inlet end and an air outlet end. The air inlet end of the collection pipe is located outside the collection cylinder, and the air outlet end of the collection pipe passes through the side wall of the collection cylinder and extends to the lower part inside the gas washing cavity; A bubbler is provided at the air outlet end of the collection pipe. The dispersion filter is arranged in the gas washing cavity. The edge of the dispersion filter is supported on the inner wall of the collection pipe, and the dispersion filter is located above the bubbler.

2. The trapping device for enhancing the trapping efficiency of the nano metal particles of the earth qi according to claim 1, characterized in that: The top of the collection cylinder is open, and a spherical cover is provided at the top of the collection cylinder. The spherical cover closes the top opening of the collection cylinder, and the air extraction port is arranged at the top of the spherical cover.

3. The trapping device for enhancing the trapping efficiency of geogas nano-metal particles according to claim 1, wherein: The bottom of the collection cylinder is funnel-shaped, and a drain pipe is provided at the bottom of the collection cylinder. The liquid outlet is located at the lower end of the drain pipe.

4. The trapping device for enhancing the trapping efficiency of the earth energy nano metal particles according to claim 3, wherein: A drain valve is further provided on the drain pipe.

5. The trapping device for enhancing the trapping efficiency of earth energy nano metal particles according to claim 1, characterized in that: The bubbler includes a bubbling housing. The bubbling housing end is connected to the air outlet end of the collection pipe. A plurality of bubbling air holes are provided in the lower part of the bubbling housing, and sand core particles are also filled in the bubbling housing.

6. The trapping device for enhancing the trapping efficiency of the earth energy nano metal particles according to claim 1, characterized in that: The gas washing cavity is filled with a collection liquid, and the dispersion filter is located in the collection liquid.

7. The trapping device for enhancing the trapping efficiency of the earth-air nanometer metal particles according to claim 1, wherein: Both the collection cylinder and the collection pipe are made of high borosilicate glass.

8. The trapping device for enhancing the trapping efficiency of the earth-air nano metal particles according to claim 1, wherein: The dispersion filter includes a fixing ring and a dispersion filter element. An installation groove is provided on the inner wall of the fixing ring. The edge of the dispersion filter element is limited in the installation groove. An elastic ring is provided on the outer wall of the fixing ring, and the fixing ring presses the elastic ring against the inner wall of the collection cylinder.

9. The trapping device for enhancing the trapping efficiency of the earth-air nano metal particles according to claim 8, wherein: The dispersion filter element includes a blocking net and sand core particles filled in the blocking net.

10. The trapping device for enhancing the trapping efficiency of the nano metal particles of the earth qi according to claim 9, characterized in that: A connecting column is further provided on the outer wall of the collection cylinder. The two ends of the connecting column are respectively connected to the collection cylinder and the collection pipe.

Images