Device and method for trapping and extracting water-soluble components in gas

Abstract

The invention discloses a trapping and extracting device and method for water-soluble components in gas. The trapping and extracting device comprises a movable seat, an elution assembly and a first driving unit, an enrichment assembly, a turntable and a second driving unit are arranged on the movable seat, the second driving unit can drive the turntable to rotate, and a filter membrane is arranged at the tail end of the support plate; the enrichment assembly can enrich water-soluble components in flowing gas on the filter membrane; the elution assembly comprises a first pool body, a second pool body and an ultrasonic generator, the second pool body is sleeved with the first pool body, and ultrasonic waves emitted by the ultrasonic generator can be transmitted to eluent in the second pool body through liquid in the first pool body; the trapping and extracting method adopts the trapping and extracting device. The water-soluble substance detection device is reasonable in structure, convenient to operate and beneficial to improving the detection precision and detection efficiency of water-soluble substances.

Description

Technical Field

[0001] The invention relates to the technical field of gas detection, and in particular to a device and method for capturing and extracting water-soluble components in gas. Background Art

[0002] The detection of water-soluble components in gases is widely used in many fields of production, such as environmental protection, industrial production, medical health, aerospace, and scientific research. The water-soluble substances in the gas are enriched and eluted to obtain the extract, so as to carry out qualitative and quantitative detection of the water-soluble substances in the gas.

[0003] In the existing gas water-soluble substance enrichment and extraction equipment, ultrapure water is usually used to ultrasonically elute the water-soluble substances enriched on the filter membrane. After elution, the filter membrane must be cleaned so that the filter membrane can be recycled. There are problems such as large amount of elution solution (such as ultrapure water) or insufficient immersion of the filter membrane, resulting in poor elution effect. In addition, when the amount of eluent is large and the elution is sufficient, the concentration of water-soluble substances in the extract prepared by elution is often low, resulting in technical problems such as great detection difficulty and low detection accuracy. In some scenarios, the prepared extract often needs to be further processed to obtain a sample solution suitable for subsequent detection; in addition, after the elution is completed, the waste liquid generated by cleaning is often difficult to handle, which is time-consuming and labor-intensive. Therefore, there is an urgent need for an enrichment and extraction equipment that is easy to operate and conducive to improving detection accuracy and efficiency. Summary of the invention

[0004] The present invention discloses a device and method for capturing and extracting water-soluble components in gas, which solves the technical problems of large amount of eluent used, low detection accuracy, and disadvantageous in reducing detection cost in the prior art gas water-soluble substance enrichment and extraction device, and has reasonable structure, convenient operation, and is conducive to improving the detection accuracy and detection efficiency of water-soluble substances. The adopted technical scheme is as follows: A device for capturing and extracting water-soluble components in gas, comprising a movable seat, an elution component and a first driving unit; The movable seat is provided with an enrichment component, a rotating disk and a second driving unit, the rotating disk includes a plurality of support plates extending radially and arranged circumferentially, the second driving unit can drive the rotating disk to rotate, and a filter membrane is provided at the end of the support plate; the enrichment component can enrich the water-soluble components in the gas flowing through on the filter membrane; The elution assembly comprises a first cell body, a second cell body and an ultrasonic generator, wherein the first cell body is sleeved outside the second cell body, and the ultrasonic wave emitted by the ultrasonic generator can be transmitted to the eluent in the second cell body through the liquid in the first cell body; When the turntable rotates to place a filter membrane above the second cell body, the first driving unit can drive the movable seat to move so that the filter membrane extends into the second cell body for elution to obtain the extract.

[0005] On the basis of the above technical solution, the liquid level height in the first tank body is not lower than the liquid level height in the second tank body, the first tank body is respectively connected with a first water inlet and a first water outlet, the first water inlet is connected with a water source through a peristaltic pump, and a first drain valve is provided at the first water outlet, the second tank body is respectively connected with a second water inlet and a second water outlet, the second water inlet is connected with an eluent source through a metering pump, and the second water outlet is connected with an extract collection pipeline.

[0006] On the basis of the above technical solution, the inner wall surface of the second pool body is matched with the outer edge of the clamping assembly that clamps the filter membrane, so that the eluent can better immerse the filter membrane.

[0007] Based on the above technical solution, the clamping assembly includes a lower cover and an upper cover, the lower cover is laterally fixed to the support plate, and the upper cover is sleeved in the lower cover to press the filter membrane against the annular flange on the inner wall of the lower cover.

[0008] On the basis of the above technical solution, the upper cover is screwed to the lower cover, a center ring is sleeved inside the upper cover, and the center ring is fixedly connected to the inner wall surface of the lower cover through a plurality of ribs arranged circumferentially.

[0009] On the basis of the above technical solution, it also includes a box body, one side of which is provided with an opening, and a door panel is hinged at the opening. The enrichment component, elution component and turntable are accommodated in a chamber of the box body to be relatively separated from other components. A notch is provided on the side wall of the chamber for the movable seat to move up and down, and the outer cover of the movable seat is provided with a dustproof cloth, and the dustproof cloth covers the notch.

[0010] On the basis of the above technical solution, the enrichment component includes an upper pressing cover, a lower pressing cover and a third driving unit. The upper pressing cover is connected to a gas cutter through a hose, and the lower pressing cover is connected to the outside through an exhaust pipe. The third driving unit can drive the upper pressing cover and the lower pressing cover to move closer or farther away. When the upper pressing cover and the lower pressing cover are close to each other, the upper pressing cover and the lower pressing cover can clamp the filter membrane up and down and form a closed chamber, so that the water-soluble components in the gas entering the closed chamber through the gas cutter are enriched on the filter membrane.

[0011] On the basis of the above technical solution, the hose is designed to be tough, and when the movable seat is displaced to the lower limit position under the action of the first driving unit and the filter membrane is immersed in the eluent in the second tank body, the hose is straightened.

[0012] On the basis of the above technical solution, a drying filter, a flow meter, a pressure-stabilizing filter and a vacuum pump are sequentially provided along the air flow direction of the exhaust pipeline. The gas diffuses along the set path under the action of the vacuum pump. The drying filter is used to dry the gas flowing through it, and the flow meter is used to monitor the size of the air flow and is electrically connected to an external controller.

[0013] A method for capturing and extracting water-soluble components in gas, using the capture and extraction device as described above, comprises the following steps: A. The second driving unit drives the turntable to rotate, so that a clean filter membrane rotates to the enrichment component; at the same time, a collected filter membrane rotates to the top of the second pool body; B. The first driving unit drives the movable seat to move downward from the upper limit position to the lower limit position, so that the collected filter membrane extends below the eluent liquid surface in the second cell body; at the same time, the enrichment component clamps the filter membrane, and the gas flows through the filter membrane to enrich the soluble components on the filter membrane; C. The ultrasonic wave emitted by the ultrasonic generator can be transmitted to the eluent in the second cell body through the liquid in the first cell body, so as to elute the water-soluble substances on the filter membrane, and then the extract in the second cell body is discharged, and then the set metered eluent is injected into the second cell body; thus, multiple elutions are completed and multiple extracts are obtained; D. Afterwards, the first driving unit drives the movable seat to move upward from the lower limit position to the upper limit position, and the eluted filter membrane is placed above the second pool body; E. Afterwards, the second driving unit drives the turntable to rotate, so that the eluted filter membrane is away from the second pool body, and then the second pool body is injected with a set amount of elution liquid, and another adjacent collected filter membrane is rotated to the top of the second pool body.

[0014] Beneficial Effects The present invention has a reasonable structure, and the elution component includes a first tank body and a second tank body which are arranged in a sleeve manner, and the design is ingenious. On the one hand, the first tank body and the ultrasonic generator can select products in the prior art to avoid non-standard customization, which is conducive to reducing costs and has good flexibility in use; on the other hand, the second tank body has a flexible structure and can be designed to be compatible with the outer edge of the clamping component that clamps the filter membrane. In this way, in a single elution process, a small amount of eluent can be used to ensure a sufficient liquid level depth, so that the filter membrane can be better immersed in the eluent, thereby improving the elution effect. Compared with the prior art in which elution is directly performed in the first tank body to obtain a larger volume of low-concentration extract, the extract obtained in the present application has a high concentration of water-soluble components, which is conducive to improving the subsequent detection accuracy; on the other hand, in the present application, the same filter membrane can achieve the effect of extracting soluble components and cleaning the filter membrane after multiple elutions, thereby avoiding the generation of waste liquid. This not only greatly reduces the loss of soluble components and further improves the detection accuracy, but also helps to reduce the amount of eluent used, reduces the cost of waste liquid treatment, and helps to reduce the cost of use.

[0015] The clamping assembly for clamping the filter membrane in the present invention includes an upper cover and a lower cover. The upper cover and the lower cover cooperate to better fix and flatten the filter membrane, improve the uniformity of enrichment of soluble substances on the filter membrane, and thus facilitate sufficient elution. At the same time, the center ring of the upper cover can conveniently screw the upper cover and the lower cover together.

[0016] In the present invention, the enrichment component, elution component and turntable are accommodated in a chamber of the box body, and a dustproof cloth is provided at the notch of the side wall of the chamber. This not only separates the elution component and the enrichment component from other components of the capture and extraction device, but also separates them from the external environment, thereby preventing the filter membrane from being contaminated or affected while waiting for elution or enrichment.

[0017] The hose connecting the gas cutter and the upper compression cover in the present invention is designed so that when the gas enters the closed chamber in the upper and lower compression covers, the hose is in a straightened state, which can greatly reduce the soluble components in the gas remaining in the hose, which is conducive to further improving the detection accuracy. In addition, the gas flowing through the filter membrane is discharged to the outside through the exhaust pipeline, and the exhaust pipeline is provided with a drying filter, a flow meter, a voltage-stabilizing filter and a vacuum pump. This can dry the gas on the one hand to avoid damaging subsequent components, and on the other hand to stabilize the airflow, so as to avoid the enrichment of soluble components on the filter membrane due to unstable airflow when the enrichment component is working, which is conducive to improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] Figure 1 : A schematic diagram of the three-dimensional structure of the box body of the present invention after removing part of the side panels; Figure 2 : Figure 1 A schematic diagram of the cross-sectional structure in the middle side view; Figure 3 : A schematic diagram of the structure of the elution component in the present invention; Figure 4 : A schematic diagram of the three-dimensional structure of the clamping assembly clamping the filter membrane in the present invention; Figure 5 : A schematic diagram of the three-dimensional structure of the enrichment component in the present invention; DETAILED DESCRIPTION The following description and accompanying drawings fully illustrate the specific embodiments of this article so that those skilled in the art can practice them. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The scope of the embodiments of this article includes the entire scope of the claims, as well as all available equivalents of the claims. Herein, the terms "first", "second", etc. are only used to distinguish one element from another, without requiring or implying any actual relationship or order between these elements. In fact, the first element can also be called the second element, and vice versa. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the structure, device or equipment including a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also include elements inherent to such structure, device or equipment. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the structure, device or equipment including the elements. Each embodiment is described in a progressive manner herein, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other.

[0020] The terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used herein to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this article and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description herein, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, it can also be the internal connection of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] As used herein, the term "plurality" means two or more than two, unless otherwise specified.

[0022] In this document, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0023] In this article, the term "and / or" is a description of the association relationship between objects, indicating that three relationships may exist. For example, A and / or B means: A or B, or, A and B.

[0024] like Figures 1 to 5 The device for capturing and extracting water-soluble components in gas shown in the figure comprises a box body 1, a movable seat 2, an elution component 11 and a first driving unit; The movable seat 2 is provided with an enrichment component 5, a rotating disk 6 and a second driving unit. Figure 1 As shown, the turntable 6 includes six radially extending and circumferentially arranged support plates, and the second drive unit includes a second stepper motor, which is fixed on the movable seat 2 and can transmit the rotational motion to the turntable 6 through the rotor. A zero-point baffle is fixed on the rotor, and a zero-point optical coupler for identifying the zero-point baffle is fixed on the movable seat. The zero-point optical coupler is electrically connected to the controller and can send a signal to the controller to reset the turntable 6 to the initial position after work. In addition, two position sensors are installed. Under normal working conditions, the two position sensors are respectively arranged on both sides of the width direction of the support plate and close to both sides of the support plate. In this way, when there is an error in the rotation angle of the turntable, at least one position sensor recognizes the support plate and sends a signal to the controller, thereby sending a prompt message to the staff.

[0025] like Figure 1As shown, a filter membrane 8 is provided at the end of the support plate. In this embodiment, the filter membrane 8 is a stainless steel fiber sintered felt with a filter aperture of 2um, which can intercept the water-soluble components of the gas with a particle size larger than its filter aperture, and can be recycled after cleaning. The filter membrane 8 is a prior art and will not be described here. In other embodiments of the present invention, the filter membrane 8 can be a metal fiber sintered felt made of other materials, and the filter aperture is within 2.5um.

[0026] like Figure 1 and 4 As shown, the filter membrane 8 is clamped by the clamping assembly 9, and the clamping assembly 9 includes a lower cover 902 and an upper cover 901. The lower cover 902 is laterally fixed to the support plate, and the upper cover 901 is sleeved in the lower cover 902, and the upper cover 901 and the lower cover 902 are screwed together. Figure 4 As shown, a center ring is provided inside the upper cover 901, and the center ring is fixedly connected to the inner wall surface of the lower cover 902 through a plurality of circumferentially arranged ribs. By screwing the upper cover 901, the filter membrane 8 can be pressed against the annular flange of the inner wall surface of the lower cover 902, and at this time, the center ring and the plurality of ribs are in contact with the filter membrane 8, so that the filter membrane 8 can be flattened, which is beneficial to improving the enrichment effect.

[0027] The enrichment component 5 can enrich the water-soluble components in the gas flowing through on the filter membrane 5; Figure 5 As shown, the enrichment assembly 5 includes an upper compression cover 501, a lower compression cover 502 and a third driving unit. The upper compression cover 501 is conical, and an upper sealing ring is provided on the bottom end surface of the upper compression cover 501. The top of the upper compression cover 501 is connected to a gas cutter 200 through a hose 12. The gas cutter 200 is a prior art and will not be described in detail here. Among them, the hose 200 is designed to be tough, and when the movable seat 2 is displaced to the lower limit position under the action of the first driving unit and the filter membrane 8 is immersed in the eluent, the hose 12 is straightened, so that the airflow can vertically enter the upper clamping cover 501, greatly reducing the residual soluble components on the inner wall of the hose 12, which is beneficial to improving the detection accuracy.

[0028] The lower pressing cover 502 is in an inverted cone shape. A sealing ring is provided on the top surface of the lower pressing cover 501 . The bottom of the lower pressing cover 502 is connected to the outside through the exhaust pipe 13 .

[0029] The third driving unit can drive the upper clamping cover 501 and the lower clamping cover 502 to move closer or farther away. Specifically, the third driving unit includes a third motor. A driving wheel is fixedly provided at the rotor end of the third motor. The driving wheel is respectively meshed with two racks arranged opposite to each other. The two racks are respectively connected to the upper clamping cover 501 and the lower clamping cover 502 through connecting arms. When the driving wheel rotates forward, the upper clamping cover 501 and the lower clamping cover 502 move closer to each other. The upper clamping cover 501 and the lower clamping cover 502 can clamp the clamping assembly up and down and form a closed chamber, so that the water-soluble components in the gas entering the closed chamber through the gas cutter 200 are enriched on the filter membrane 8, and at this time, the filter membrane 8 is arranged close to the upper clamping cover, which is convenient for the enrichment of water-soluble substances thereon; when the driving wheel rotates reversely, the upper clamping cover 501 and the lower clamping cover 502 move away from each other to release the clamping assembly 9 and the filter membrane 8.

[0030] like Figure 1 and 2 As shown, a drying filter 14, a flow meter 15, a pressure-stabilizing filter 16 and a vacuum pump 17 are sequentially arranged on the exhaust pipe 13 along the airflow direction, wherein the drying filter 14 and the pressure-stabilizing filter 16 are both vacuum filters, which are prior art and will not be described in detail here. The gas diffuses along a set path under the action of the vacuum pump 17, and the drying filter 14 is used to dry the gas flowing therethrough to avoid introducing water vapor into other components. The flow meter 15 is used to monitor the size of the airflow and is electrically connected to an external controller. The setting of the two filters can make the airflow more stable when the vacuum pump 17 is frequently started and stopped, which is beneficial to the enrichment of soluble substances on the filter membrane, thereby helping to improve the detection accuracy.

[0031] like Figure 1 and 2 As shown, in this embodiment, the box body 1 is covered outside the movable seat 2, the elution component 11, the enrichment component 5 and the turntable 6, and an opening is provided on one side of the box body 1. Figure 1 As shown, the opening is arranged facing the enrichment component 5, the elution component 11 and the turntable 6, and a door panel 101 is hinged at the opening. The door panel 101 can close or open the chamber 102 where the enrichment component 5, the elution component 11 and the turntable 6 are located. The chamber relatively separates the enrichment component 5, the elution component 11 and the turntable 6 from other components, and a notch 1021 is provided on the side wall of the chamber 102 for the movable seat 2 to move up and down. The outer cover of the movable seat 2 is provided with a dustproof cloth 18, and the outer edge of the dustproof cloth 18 is connected to the edge of the notch 1021 to cover the notch 1021. In this way, the movable seat 2 and the enrichment component 5 and turntable 6, the elution component 11, the first drive unit, the second drive unit and the third drive unit thereon can be separated from other components, reducing the influence of external pollution on the enrichment and elution process, which is beneficial to improving the detection accuracy.

[0032] The first driving unit includes a first motor, which is fixed in the box body 1 and drives the movable seat 2 to move up and down through a screw pair.

[0033] like Figure 3 As shown, the elution assembly 11 includes a first tank body 110, a second tank body 111 and an ultrasonic generator. The first tank body 110 is sleeved outside the second tank body 111. The ultrasonic wave emitted by the ultrasonic generator can be transmitted to the eluent in the second tank body 111 through the liquid in the first tank body 110. In this embodiment, the ultrasonic generator has a power of 35W and an ultrasonic frequency of 40KHz. The sleeve arrangement of the first tank body 110 and the second tank body 111 in this application makes the caliber and size of the first tank body 110 more flexible, and can be adapted to the ultrasonic tank body in the prior art, avoiding non-standard customization, which is conducive to reducing costs and has good flexibility of use. Among them, the first tank body 110 is respectively connected to the first water inlet and the first water outlet. The first water inlet is connected to the water source through a peristaltic pump, and a first drain valve is provided at the first water outlet, so that the liquid in the first tank body 110 can be regularly replaced, or the liquid in the first tank body 110 can be drained in time when the equipment is out of use.

[0034] The inner wall surface of the second tank body 111 is matched with the outer edge of the clamping assembly 9 that clamps the filter membrane 8, so that a small amount of eluent can ensure a sufficient liquid level depth, so that the filter membrane 8 is better immersed in the eluent, the elution effect is improved, and the soluble components in the extract are ensured to have a sufficient concentration. The second tank body 11 is connected to a second water inlet and a second water outlet, respectively. The second water inlet is connected to the eluent source through a metering pump, and the second water outlet is connected to the extract collection pipeline, and the end of the collection pipeline is connected to a collection bottle (not shown).

[0035] In addition, the liquid level in the first tank body 110 is not lower than the liquid level in the second tank body 111. In this embodiment, the liquid level in the first tank body 110 is 1-3 mm higher than the liquid level in the second tank body 111. This ensures a good ultrasonic transmission effect and thus ensures an elution effect.

[0036] In view of the good elution effect of the filter membrane in the present application, multiple elutions can not only fully extract the soluble substances enriched on the filter membrane 8, but also clean the filter membrane 8, so that the filter membrane 8 after multiple elutions can meet the cleanliness requirements and avoid the generation of waste liquid. It should be emphasized that the extract finally obtained after multiple elutions in the present application also has a suitable concentration of soluble components, which is convenient for measurement.

[0037] In other embodiments of the present invention, the box body 1 is further covered with a shell, and one or more of an air conditioner, a sterilizer, and a temperature sensor are arranged in the shell to create a good working environment to ensure the smooth operation of the device.

[0038] A method for capturing and extracting water-soluble components in gas, using the above-mentioned capturing and extracting device, comprises the following steps: A. The second driving unit drives the turntable 6 to rotate, so that a clean filter membrane 8 rotates to the enrichment component 5; at the same time, a collected filter membrane 8 rotates to the top of the second pool body 111; B. The first driving unit drives the movable seat 2 to move downward from the upper limit position to the lower limit position, so that the collected filter membrane 8 extends below the liquid surface of the eluent in the second cell body 111. At this time, the hose 12 is stretched to a vertical state, and the ultrasonic generator is activated to elute the filter membrane 8 immersed in the second cell body 111; at the same time, the third driving unit in the enrichment component 5 is activated to drive the upper pressing cover 501 and the lower pressing cover 502 to approach each other, and clamp the clamping component 9 downward, and then start the vacuum pump 17 to make the gas flow through the filter membrane 8 so that the soluble components are enriched on the filter membrane 8. At the same time, under the action of the drying filter 14 and the pressure stabilizing filter 16, the flow rate of the gas flowing through can be guaranteed to be stable; C. The ultrasonic wave emitted by the ultrasonic generator can be transmitted to the eluent in the second cell body 111 through the liquid in the first cell body 110, wherein the liquid in the first cell body 110 can be ultrapure water, and the eluent is ultrapure water. The water-soluble substances on the filter membrane 8 are eluted within the set time a1, and then the extract in the second cell body 111 is discharged and collected in a collecting bottle, and then 10 ml of the eluent with a set amount is injected into the second cell body 111; the elution is repeated three times to obtain three extracts; at this time, the filter membrane is relatively clean and can be directly used for the next enrichment.

[0039] D. Afterwards, the first driving unit drives the movable seat 2 to move upward from the lower limit position to the upper limit position, at which time the hose 12 is bent, and the eluted filter membrane 8 is placed above the second cell body 111; E. Afterwards, the second driving unit drives the turntable 6 to rotate, so that the eluted filter membrane 8 is away from the second cell body 111, and then the second cell body 111 is injected with a set amount of elution liquid, and another adjacent collected filter membrane 8 is rotated to the top of the second cell body 111.

[0040] This cycle is repeated to achieve online capture and extraction of gas soluble components.

[0041] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications made based on the present invention belong to the scope of protection claimed by the present invention.

Claims

1. A device for capturing and extracting water-soluble components in gas, characterized in that: It comprises a movable seat (2), an elution component (11) and a first driving unit; The movable seat (2) is provided with an enrichment component (5), a rotating disk (6) and a second driving unit, the rotating disk (6) comprising a plurality of support plates extending radially and arranged circumferentially, the second driving unit being capable of driving the rotating disk to rotate, and a filter membrane (8) being disposed at the end of the support plate; the enrichment component (5) is capable of enriching water-soluble components in the gas flowing through the filter membrane (8); The elution assembly (11) comprises a first cell body (110), a second cell body (111) and an ultrasonic generator, wherein the first cell body (110) is sleeved outside the second cell body (111), and the ultrasonic wave emitted by the ultrasonic generator can be transmitted to the eluent in the second cell body (111) through the liquid in the first cell body (110); When the rotating disk (6) rotates to place a filter membrane (8) above the second cell body (111), the first driving unit can drive the movable seat (2) to move, so that the filter membrane (8) extends into the second cell body (111) for elution to obtain the extract.

2. The device for capturing and extracting water-soluble components in gas according to claim 1, characterized in that: The liquid level in the first tank body (110) is not lower than the liquid level in the second tank body (111); the first tank body (110) is connected to a first water inlet and a first water outlet respectively; the first water inlet is connected to a water source via a peristaltic pump, and a first drain valve is provided at the first water outlet; the second tank body (111) is connected to a second water inlet and a second water outlet respectively; the second water inlet is connected to an eluent source via a metering pump, and the second water outlet is connected to an extract collection pipeline.

3. The device for capturing and extracting water-soluble components in gas according to claim 2, characterized in that: The inner wall surface of the second tank body (111) is matched with the outer edge of the clamping assembly (9) that clamps the filter membrane (8), so that the eluent can better immerse the filter membrane.

4. The device for capturing and extracting water-soluble components in gas according to claim 3, characterized in that: The clamping assembly (9) comprises a lower cover (902) and an upper cover (901); the lower cover (902) is laterally fixed to the support plate; the upper cover (901) is sleeved inside the lower cover (902) to press the filter membrane (8) against the annular flange on the inner wall of the lower cover (902).

5. The device for capturing and extracting water-soluble components in gas according to claim 4, characterized in that: The upper cover (901) is screwed to the lower cover (902); a center ring is sleeved inside the upper cover (901), and the center ring is fixedly connected to the inner wall surface of the lower cover (902) via a plurality of ribs arranged in a circumferential direction.

6. The device for capturing and extracting water-soluble components in gas according to claim 1, characterized in that: The invention also comprises a box body (1), one side of which is provided with an opening, a door panel (101) being hingedly connected to the opening, the enrichment component (5), the elution component (11) and the turntable (6) being accommodated in a chamber (102) of the box body (1) so as to be relatively separated from other components, a notch (1021) for the movable seat (2) to move up and down is provided on the side wall of the chamber (102), the outer cover of the movable seat (2) is provided with a dustproof cloth (18), and the dustproof cloth (18) covers the notch (1021).

7. The device for capturing and extracting water-soluble components in gas according to any one of claims 1 to 6, characterized in that: The enrichment component (5) comprises an upper pressing cover (501), a lower pressing cover (502) and a third driving unit. The upper pressing cover (501) is connected to a gas cutter (200) via a hose (12). The lower pressing cover (502) is connected to the outside via an exhaust pipe (13). The third driving unit can drive the upper pressing cover (501) and the lower pressing cover (502) to move closer or farther away. When the upper pressing cover (501) and the lower pressing cover (502) are closer, the upper pressing cover (501) and the lower pressing cover (502) can clamp the filter membrane (8) up and down to form a closed chamber, so that water-soluble components in the gas entering the closed chamber through the gas cutter (200) are enriched on the filter membrane (8).

8. The device for capturing and extracting water-soluble components in gas according to claim 7, characterized in that: The hose (12) is designed to be tough, and when the movable seat (2) is displaced to the lower limit position under the action of the first driving unit and the filter membrane (8) is immersed in the eluent in the second tank body (111), the hose (12) is straightened.

9. The device for capturing and extracting water-soluble components in gas according to claim 7, characterized in that: The exhaust pipe (13) is provided with a drying filter (14), a flow meter (15), a pressure-stabilizing filter (16) and a vacuum pump (17) in sequence along the direction of the air flow. The gas diffuses along a set path under the action of the vacuum pump (17). The drying filter (14) is used to dry the gas flowing through it. The flow meter (15) is used to monitor the size of the air flow and is electrically connected to an external controller.

10. A method for capturing and extracting water-soluble components in gas, using the capture and extraction device as claimed in any one of claims 1 to 6, characterized in that: The steps include: A. The second driving unit drives the turntable (6) to rotate, so that a clean filter membrane (8) rotates to the enrichment component (5); at the same time, a filter membrane (8) that has been collected rotates to the top of the second pool body (111); B. the first driving unit drives the movable seat (2) to move downward from the upper limit position to the lower limit position, so that the collected filter membrane (8) extends below the liquid surface of the eluent in the second tank body (111); at the same time, the enrichment component (5) clamps the filter membrane (8), and the gas flows through the filter membrane (8) so that the soluble components are enriched on the filter membrane (8); C. The ultrasonic wave emitted by the ultrasonic generator can be transmitted to the eluent in the second cell body (111) through the liquid in the first cell body (110), thereby eluting the water-soluble substances on the filter membrane (8), and then the extract in the second cell body (111) is discharged, and then the set metered eluent is injected into the second cell body (111); thus, multiple elutions are completed and multiple extracts are obtained; D. Afterwards, the first driving unit drives the movable seat (2) to move upward from the lower limit position to the upper limit position, and the eluted filter membrane (8) is placed above the second pool body (111); E. Afterwards, the second driving unit drives the turntable (6) to rotate so that the eluted filter membrane (8) is moved away from the second pool body (111), and then the second pool body (111) is injected with a set amount of elution liquid, and another adjacent filter membrane (8) that has been collected is rotated to the top of the second pool body (111).

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