Device system for collecting heavy liquid in vacuum after mineral heavy liquid separation

Abstract

The invention provides a device system for vacuum collection of heavy liquid after mineral heavy liquid separation. The device system comprises a heat preservation conveying device, a flow speed control device and a vacuum collection device which are sequentially connected in the flowing direction of the heavy liquid. The vacuum collecting device comprises a vacuum separating device and a collecting device. According to the device system, the temperature of the heavy liquid is controlled through the heat preservation conveying device, the flow speed of the heavy liquid is controlled through the flow speed control device, rapid and efficient recovery of the heavy liquid is achieved in combination with the vacuum collection device, and the use cost and the safety risk of the heavy liquid in an experiment are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of heavy mineral separation, and in particular relates to a device system for vacuum collecting heavy liquid after mineral heavy liquid separation. Background Art

[0002] Sediment provenance identification technology has always been an important means for geological science to study stratigraphic sedimentation and tectonic evolution. However, in practical applications, due to the diversity of sediment types and the complex and changeable sedimentary environment, it is a key marine sedimentary area for studying the source and sink changes of sediments. Among them, fine sand and silty sandstone sedimentary areas are mainly distributed. For such sediment types, the detrital mineral method should be the first choice for source analysis. The study of single minerals has gradually become the focus of modern sedimentological research. The accompanying problem is how to select the required single minerals efficiently, quickly and accurately for single-particle mineral chemical testing and geochronological analysis such as electron probe testing (EPMA), proton microprobe (PIXE), high-resolution secondary ion mass spectrometry (SIMS), laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) at low cost. The above research methods can make up for the shortcomings of traditional analysis methods. The chemical typological characteristics corresponding to single minerals have become a sign of the transition of sediment source research from qualitative analysis to quantitative analysis.

[0003] The mass of the detrital mineral sample for single mineral quantitative analysis is generally required to be ≥50mg (currently the most advanced instruments can reduce it to 20mg). If parallel sample comparison and data statistics recovery are done, plus spare samples, about 200mg is required. For fine-grained sedimentary minerals, 50mg means that the sample contains 10,000 to 20,000 different types of single mineral particles. It is difficult and inefficient to manually select from the sample using a high-power microscope. Therefore, it is an inevitable choice to use the different characteristics of minerals to sort the same minerals.

[0004] In summary, different research purposes and research objects have different methods in mineral sorting, but the main purpose is to sort out as many representative target minerals as possible. Since this mineral sorting is for scientific research needs, the use of chemical reagents in the sorting process must be standardized to ensure that the methods adopted are accurate and reliable.

[0005] Due to the strict requirements of the preservation of heavy liquid and the density required in the experiment, the recovery efficiency of the natural sedimentation method used in the experiment needs to be improved urgently. The commonly used heavy liquids for mineral sorting are diiodomethane and bromoform, which are the two most commonly used heavy liquids in single mineral sorting. For heavy liquids with a density less than 2.89, bromoform can be used to mix with dimethyl sulfoxide or anhydrous ethanol; heavy liquids with a density between 2.89 and 3.32 can be obtained by mixing diiodomethane and bromoform; and heavy liquids with a density greater than 3.32, because the reagents contain precious metals and heavy metals, in addition to being expensive, they are also highly toxic and corrosive. In addition, in daily experiments, the longer the mineral sedimentation time, the greater the risk of contact between its toxic substances and experimenters.

[0006] At present, the new heavy liquid sodium polytungstate has become the heavy liquid and diluent gradually selected by many rock and mineral laboratories due to its outstanding advantages of being non-toxic and tasteless, with adjustable density and easy recycling. However, it is still not as widely applicable as bromoform because of its high price in the international market, the lack of domestic analytical products in China, and its oxidizing properties, precipitation when encountering calcium ions, and high viscosity. The new diluent dimethyl sulfoxide is a colorless and odorless transparent liquid at room temperature. It has the characteristics of high polarity, high boiling point, good thermal stability, and miscibility with water. It can be dissolved in most organic substances such as ethanol, propanol, benzene and chloroform, and is known as the "universal solvent". Using dimethyl sulfoxide as a diluent is more stable than the heavy liquid prepared by anhydrous ethanol, xylene and acetone, and is more in line with environmental protection requirements. Using it to flush diiodomethane is better in effect and safety than industrial alcohol and ether, but the price is higher. Summary of the invention

[0007] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a device system for vacuum collecting heavy liquid after mineral heavy liquid separation. The device system can quickly and efficiently recover the heavy liquid in the mineral heavy liquid sorting process by using a heat preservation device, a flow rate control device and a vacuum separation device, so as to reduce the cost and safety risk of the heavy liquid used in the experiment.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] The present invention provides a device system for vacuum collecting heavy liquid after separation of mineral heavy liquid, wherein the device system comprises a heat preservation conveying device, a flow rate control device and a vacuum collecting device which are sequentially connected according to the flow direction of the heavy liquid;

[0010] The vacuum collecting device comprises a vacuum separating device and a collecting device.

[0011] The present invention controls the temperature of the heavy liquid by adopting a heat-insulating conveying device, controls the flow rate of the heavy liquid by adopting a flow rate control device, and realizes rapid and efficient recovery of the heavy liquid by combining a vacuum collection device, thereby reducing the use cost and safety risk of the heavy liquid in the experiment.

[0012] As a preferred technical solution of the present invention, the heavy liquid includes any one of bromoform, tetrabromoethane, sodium polytungstate, Dulles solution, diiodomethane, silver barium mercury iodide or Krielich solution.

[0013] It is worth noting that the selection of the separation mineral and the heavy liquid of the present invention is as follows: 1) When the mineral is plagioclase and quartz, bromoform with a density of 2.60 to 2.65 is selected, and the diluent is dimethyl sulfoxide; 2) When the mineral is quartz and calcite, bromoform with a density of 2.68 to 2.70 is selected, and the diluent is dimethyl sulfoxide; 3) When the mineral is muscovite and biotite, diiodomethane or dulcerative colloidal silica with a density of 3.0 to 3.1 is selected. Liquid, the diluent is dimethyl sulfoxide or distilled water; 4) When the minerals are biotite and amphibole, use diiodomethane or Dulle liquid with a density of 3.1-3.15, and the diluent is dimethyl sulfoxide or distilled water; 5) When the minerals are amphibole and epidote, use diiodomethane with a density of 3.32; 6) When the minerals are epidote, garnet, zircon and rutile, use diiodomethane and elemental iodine or silver barium mercury iodide with a density of 3.40-345.

[0014] It is worth noting that the extraction process of the heavy liquid of the present invention comprises the following steps:

[0015] (1) Mechanically crush samples collected from the field or from drilling to obtain samples with a particle size of 70 to 250 mesh;

[0016] (2) screening, washing and drying the crushed samples in sequence to obtain mineral-rich particles with impurities and mud removed;

[0017] (3) magnetically separating the mineral-rich particles obtained in step (2) to obtain apatite mineral particles;

[0018] (4) performing heavy liquid separation: utilizing the specific gravity of the apatite mineral particles themselves to perform mineral separation in a heavy liquid; wherein the heavy liquid is tetrabromoethane and diiodomethane with a specific gravity of 2.89;

[0019] The mineral separation is as follows: apatite and zircon particles with higher specific gravity are precipitated in tetrabromoethane, and then apatite and zircon are separated by using diiodomethane, zircon is precipitated, and apatite floats on the surface of the heavy liquid;

[0020] (5) Residual heavy mineral impurities in the heavy liquids of diiodomethane and tetrabromoethane containing heavy minerals are recovered.

[0021] As a preferred technical solution of the present invention, the heat-insulating conveying device includes a heat-insulating conveying pipeline.

[0022] Preferably, the outer surface of the insulated conveying pipeline is wrapped with an anti-corrosion rust layer, a heating layer, an insulation layer and a waterproof and anti-rust layer in sequence from the inside to the outside.

[0023] As a preferred technical solution of the present invention, anti-corrosion and anti-rust paint is provided in the anti-corrosion rust layer.

[0024] Preferably, the heating layer comprises an electric heating tape wound around the anti-corrosion rust layer.

[0025] Preferably, the electric heating belt is connected with an automatic control switch via a pipeline.

[0026] Preferably, the automatic control switch is provided with a temperature probe through a pipeline.

[0027] Preferably, the temperature probe is arranged on the outer wall of the heat-insulating conveying pipeline.

[0028] The heat-insulating conveying pipeline of the present invention is used to heat and control the temperature of the heavy liquid, so that the filtration rate of the heavy liquid and the sedimentation rate of the minerals in the Stokes sedimentation method can reach the maximum.

[0029] It is worth noting that the temperature probe of the present invention can display the temperature. If the temperature is lower than 20°C, the electric heating belt can be turned on by the automatic control switch to provide heat until it is heated to 3020-330°C, and then the heating is stopped.

[0030] As a preferred technical solution of the present invention, the thermal insulation layer includes a thermal insulation cotton layer or a polyurethane thermal insulation layer.

[0031] Preferably, the thickness of the thermal insulation layer is 20 to 30 mm, for example, 20 mm, 22 mm, 24 mm, 26 mm, 28 mm or 30 mm, but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable.

[0032] As a preferred technical solution of the present invention, the temperature controlled by the heat-insulating conveying device is 20-30°C, for example, it can be 20°C, 21°C, 22°C, 23°C, 24°C, 25°C, 26°C, 27°C, 28°C, 29°C or 30°C, but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable.

[0033] As a preferred technical solution of the present invention, the flow rate control device includes a flow meter or a deceleration valve.

[0034] Preferably, the flow rate controlled by the flow rate control device is 1.5 to 2 m 3 / min, for example, it can be 1.5m 3 / min、1.6m 3 / min、1.7m 3 / min、1.8m 3 / min、1.9m 3 / min or 2m 3 / min, but is not limited to the listed values. Other values ​​not listed within the numerical range are also applicable.

[0035] The flow rate of the heavy liquid after the mineral heavy liquid separation of the present invention is 1.5 to 2 m 3 / min. If the speed is too fast, the heavy liquid separation will be insufficient; if the speed is too low, the heavy liquid recovery rate will be reduced.

[0036] As a preferred technical solution of the present invention, the vacuum separation device includes a liquid isolation funnel.

[0037] Preferably, the collecting device comprises a suction flask.

[0038] Preferably, a gasket is provided between the septum funnel and the suction filter bottle.

[0039] The gasket of the present invention is a rubber gasket, which has the following functions: to seal the volatile toxic gas in the heavy liquid.

[0040] As a preferred technical solution of the present invention, filter paper and filter steel mesh are stacked in the liquid-isolating funnel near the outlet along the liquid flow direction.

[0041] Preferably, the filter paper comprises fibrous filter cloth.

[0042] The fibrous filter cloth used in the present invention has the characteristics of preventing excessive suction and heavy liquid corrosion and damage, is not easily damaged when filtering heavy liquid, and can be reused.

[0043] Preferably, the thickness of the fibrous filter cloth is 0.3-0.8 mm, for example, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm or 0.8 mm, but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable.

[0044] Preferably, the mesh number of the filter steel mesh is 50 to 80 meshes, for example, it can be 50 meshes, 60 meshes, 70 meshes or 80 meshes, but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable.

[0045] As a preferred technical solution of the present invention, the suction filter bottle is connected to the vacuum pump through a rubber tube;

[0046] Preferably, the pressure of the vacuum pump is -10 to -55 kPa, for example, -10 kPa, -20 kPa, -30 kPa, -40 kPa, -50 kPa or -55 kPa, but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable.

[0047] The pressure of the vacuum pump during the filtration process of the present invention is -10 to 55 kPa. Too low a pressure will result in the heavy liquid not being fully recovered, while too high a pressure will result in the filter paper being broken.

[0048] Preferably, the power of the vacuum pump is 5.5-220KW, for example, it can be 5.5KW, 10KW, 50KW, 80KW, 100KW, 130KW, 160KW, 190KW or 220KW, but is not limited to the listed values, and other values ​​not listed within the numerical range are also applicable.

[0049] The numerical range described in the present invention not only includes the point values ​​listed above, but also includes any point values ​​between the above numerical ranges that are not listed. Due to space limitations and for the sake of simplicity, the present invention no longer exhaustively lists the specific point values ​​included in the range.

[0050] Compared with the prior art, the present invention has the following beneficial effects:

[0051] The device system for vacuum collecting heavy liquid after separation of mineral heavy liquid provided by the present invention shortens the natural sedimentation time of the heavy liquid, improves the recovery rate of the heavy liquid, and further reduces the use cost of the heavy liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a structural schematic diagram of a device system for vacuum collecting heavy liquid after mineral heavy liquid separation provided by a specific embodiment of the present invention;

[0053] Figure 2 is a cross-sectional view of a heat-insulating conveying pipeline provided in a specific embodiment of the present invention;

[0054] Figure 3 It is a structural schematic diagram of a vacuum collection device provided in a specific embodiment of the present invention;

[0055] Among them, 1 is a heat-insulating conveying device, 2 is a flow rate control device, 3 is a vacuum collecting device, 1-1 is an anti-corrosion rust layer, 1-2 is a heating layer, 1-3 is a heat-insulating layer, 1-4 is a waterproof and anti-rust layer, 3-1 is a liquid-isolating funnel, 3-2 is a suction filter bottle, 3-3 is a gasket, 3-4 is filter paper, 3-5 is a filter steel mesh, 3-6 is a rubber tube, and 3-7 is a vacuum pump. DETAILED DESCRIPTION

[0056] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood by those skilled in the art that the embodiments are only to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0057] It is worth noting that, in a specific embodiment of the present invention, the schematic diagram of the structure of the device system for vacuum collecting heavy liquid after separation of mineral heavy liquid is as follows: Figure 1 As shown, the device system is obtained, including the following connected in sequence according to the heavy liquid flow direction: Figure 2 The heat preservation conveying device 1, the flow rate control device 2 and the Figure 3 The vacuum collecting device 3 shown;

[0058] The vacuum collecting device 3 comprises a vacuum separation device and a collecting device.

[0059] The heat-insulating conveying device 1 comprises a heat-insulating conveying pipeline; the outer surface of the heat-insulating conveying pipeline is sequentially wrapped with an anti-corrosion rust layer 1-1, a heating layer 1-2, a heat-insulating layer 1-3 and a waterproof and anti-rust layer 1-4 from the inside to the outside.

[0060] The anti-corrosion rust layer 1-1 is provided with anti-corrosion and anti-rust paint; the heating layer 1-2 includes an electric heating belt wound on the anti-corrosion rust layer; the electric heating belt is provided with an automatic control switch through a pipeline connection; the automatic control switch is provided with a temperature probe through a pipeline; the temperature probe is provided on the outer wall of the heat-insulating conveying pipeline. The heat-insulating layer 1-3 is a heat-insulating cotton heat-insulating layer or a polyurethane heat-insulating layer with a thickness of 20 to 30 mm;

[0061] The flow rate control device 2 is a flow meter, which controls the flow rate of 1.5 to 2 m 3 / min.

[0062] The vacuum separation device comprises a liquid-isolating funnel 3-1; the collecting device comprises a suction filter bottle 3-2; and a gasket 3-3 is arranged between the liquid-isolating funnel and the suction filter bottle.

[0063] Filter paper 3-4 and filter steel gauze 3-5 are stacked in the direction close to the outlet of the liquid-isolating funnel 3-1; the filter paper 3-4 comprises a fibrous filter cloth with a thickness of 0.3 to 0.8 mm; the mesh number of the filter steel gauze 3-5 is 50 to 80 meshes.

[0064] The suction filter bottle 3-2 is connected to the vacuum pump 3-7 through a rubber tube 3-6; the pressure of the vacuum pump 3-7 is -10 to -55 kPa.

[0065] Example 1

[0066] This embodiment provides a device system for vacuum collecting heavy liquid after mineral heavy liquid separation, wherein the device system includes the following devices connected in sequence according to the flow direction of the heavy liquid: Figure 2 The heat preservation conveying device 1, the flow rate control device 2 and the Figure 3 The vacuum collecting device 3 shown;

[0067] The vacuum collecting device 3 comprises a vacuum separation device and a collecting device.

[0068] The heat-insulating conveying device 1 comprises a heat-insulating conveying pipeline; the outer surface of the heat-insulating conveying pipeline is sequentially wrapped with an anti-corrosion rust layer 1-1, a heating layer 1-2, a heat-insulating layer 1-3 and a waterproof and anti-rust layer 1-4 from the inside to the outside.

[0069] The anti-corrosion rust layer 1-1 is provided with anti-corrosion and anti-rust paint; the heating layer 1-2 includes an electric heating belt wrapped around the anti-corrosion rust layer; the electric heating belt is provided with an automatic control switch through a pipeline connection; the automatic control switch is provided with a temperature probe through a pipeline; the temperature probe is provided on the outer wall of the heat-insulating conveying pipeline. The heat-insulating layer 1-3 is a heat-insulating cotton heat-insulating layer with a thickness of 25 mm; the control temperature is 20-30°C;

[0070] The flow rate control device 2 is a flow meter, which controls the flow rate to be 1.95m 3 / min.

[0071] The vacuum separation device comprises a liquid-isolating funnel 3-1; the collecting device comprises a suction filter bottle 3-2; and a gasket 3-3 is arranged between the liquid-isolating funnel and the suction filter bottle.

[0072] The filter paper 3-4 and the filter steel gauze 3-5 are stacked in the direction close to the outlet of the liquid-isolating funnel 3-1; the filter paper 3-4 comprises a fibrous filter cloth with a thickness of 0.5 mm; the mesh number of the filter steel gauze 3-5 is 60 meshes.

[0073] The suction filter bottle 3-2 is connected to the vacuum pump 3-7 through a rubber tube 3-6; the pressure of the vacuum pump 3-7 is -30 kPa.

[0074] Example 2

[0075] This embodiment provides a device system for vacuum collecting heavy liquid after mineral heavy liquid separation. The device system is different from that of embodiment 1 only in that:

[0076] In this embodiment, the fiberized filter cloth is modified into cellulose paper.

[0077] Example 3

[0078] This embodiment provides a device system for vacuum collecting heavy liquid after mineral heavy liquid separation. The device system is different from that of embodiment 1 only in that:

[0079] In this embodiment, the insulation layers 1-3 of the insulation conveying pipeline are omitted.

[0080] Example 4

[0081] This embodiment provides a device system for vacuum collecting heavy liquid after mineral heavy liquid separation. The difference between the device system and embodiment 1 is only that:

[0082] In this embodiment, the heating layer 1-2 of the heat-insulating conveying pipeline is omitted.

[0083] Example 5

[0084] This embodiment provides a device system for vacuum collecting heavy liquid after mineral heavy liquid separation. The difference between the device system and embodiment 1 is only that:

[0085] In this embodiment, the filter steel mesh 3-5 is omitted.

[0086] Comparative Example 1

[0087] This comparative example provides a device system for vacuum collecting heavy liquid after mineral heavy liquid separation, and the difference between the device system and Example 1 is only that:

[0088] In this comparative example, the flow rate control device 2 is omitted.

[0089] Comparative Example 2

[0090] This comparative example provides a device system for vacuum collecting heavy liquid after mineral heavy liquid separation, and the difference between the device system and Example 1 is only that:

[0091] In this comparative example, the heat-insulating delivery pipeline is modified into an ordinary delivery pipeline, that is, it has no heat-insulating and heating function.

[0092] Application Examples

[0093] The heavy liquid was separated by the device system provided in the above embodiment and comparative example, and the results are as follows:

[0094] (1) The device system provided in Example 1 can realize the effective recovery of heavy liquid, the natural sedimentation time of heavy liquid, improve the recovery rate of heavy liquid, and thus reduce the cost of using heavy liquid;

[0095] (2) When the device system provided in Example 2 is used for collection, the cellulose paper is easily damaged under the pressure of the vacuum pump during the collection process, and the heavy liquid cannot be effectively collected;

[0096] (3) When the device system provided in Example 3 is used for collection, the temperature of the heavy liquid is unstable during the transportation process, and the heating layer needs to be turned on for heating. However, long-term heating will cause the temperature to be too high, thereby causing the heavy liquid to evaporate;

[0097] (4) When the device system provided in Example 4 is used for collection, the temperature of the heavy liquid is unstable during the transportation process, and it cannot be heated up when the temperature is low, resulting in a decrease in the recovery rate of the heavy liquid;

[0098] (5) When the device system provided in Example 5 is used for collection, the purity and flow rate of the recovered heavy liquid will be affected;

[0099] (6) When the device system provided in Comparative Example 1 is used for collection, the flow rate of the heavy liquid cannot be controlled. If the flow rate is too slow, the recovery rate will be reduced;

[0100] (7) When the device system provided in Comparative Example 2 is used for collection, the temperature of the heavy liquid cannot be controlled.

[0101] In summary, the device system provided by the present invention controls the temperature of the heavy liquid by adopting an insulating conveying device, controls the flow rate of the heavy liquid by adopting a flow rate control device, and combines the use of a vacuum collection device to achieve rapid and efficient recovery of the heavy liquid, thereby reducing the use cost and safety risks of the heavy liquid in the experiment.

[0102] The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above-mentioned embodiments, but the present invention is not limited to the above-mentioned detailed structural features, that is, it does not mean that the present invention must rely on the above-mentioned detailed structural features to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of the components selected by the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

[0103] The applicant declares that the present invention illustrates the detailed process flow of the present invention through the above-mentioned embodiments, but the present invention is not limited to the above-mentioned detailed process flow, that is, it does not mean that the present invention must rely on the above-mentioned detailed process flow to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of various raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. A device system for vacuum collecting heavy liquid after mineral heavy liquid separation, characterized in that: The device system comprises a heat preservation conveying device, a flow rate control device and a vacuum collecting device which are sequentially connected according to the flow direction of the heavy liquid; the vacuum collecting device comprises a vacuum separation device and a collecting device.

2. The device system according to claim 1, characterized in that: The heavy liquid includes any one of bromoform, tetrabromoethane, sodium polytungstate, Dulle's solution, diiodomethane, silver barium mercury iodide or Krielich solution.

3. The device system according to claim 1 or 2, characterized in that: The heat-insulating conveying device comprises a heat-insulating conveying pipeline; Preferably, the outer surface of the insulated conveying pipeline is wrapped with an anti-corrosion rust layer, a heating layer, an insulation layer and a waterproof and anti-rust layer in sequence from the inside to the outside.

4. The device system according to claim 3, characterized in that: The anti-corrosion rust layer is provided with an anti-corrosion and anti-rust paint; Preferably, the heating layer comprises an electric heating tape wound around the anti-corrosion rust layer; Preferably, the electric heating belt is connected with an automatic control switch via a pipeline; Preferably, the automatic control switch is provided with a temperature probe through a pipeline; Preferably, the temperature probe is arranged on the outer wall of the heat-insulating conveying pipeline.

5. The device system according to claim 3, characterized in that: The thermal insulation layer comprises a thermal insulation layer of thermal insulation cotton or a thermal insulation layer of polyurethane; Preferably, the thickness of the thermal insulation layer is 20 to 30 mm.

6. The device system according to any one of claims 1 to 5, characterized in that: The temperature controlled by the heat preservation conveying device is 20-30°C.

7. The device system according to any one of claims 1 to 6, characterized in that: The flow rate control device includes a flow meter or a deceleration valve; Preferably, the flow rate controlled by the flow rate control device is 1.5 to 2 m 3 / min.

8. The device system according to any one of claims 1 to 7, characterized in that: The vacuum separation device comprises a liquid-isolating funnel; Preferably, the collecting device comprises a suction filter bottle; Preferably, a gasket is provided between the septum funnel and the suction filter bottle.

9. The device system according to claim 8, characterized in that: Along the liquid flow direction, filter paper and filter steel mesh are stacked in the liquid-isolating funnel near the outlet; Preferably, the filter paper comprises a fibrous filter cloth; Preferably, the thickness of the fibrous filter cloth is 0.3 to 0.8 mm; Preferably, the mesh number of the filter steel mesh is 50 to 80 meshes.

10. The device system according to claim 8, characterized in that: The suction filter bottle is connected to the vacuum pump through a rubber tube; Preferably, the pressure of the vacuum pump is -10 to -55 kPa; Preferably, the power of the vacuum pump is 5.5-220KW.

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