Multi-stage trapping device for heating gas-phase substances in cigarette smoke

Abstract

The invention relates to a multi-stage trapping device for heating gas-phase substances in cigarette smoke. The multi-stage trapping device comprises a gas collecting bag, a gas washing bottle, a stirring assembly and a gas conveying pipeline. The gas collecting bag is used for storing and heating cigarette smoke, and the stirring assembly is arranged on the gas washing bottle and used for stirring a chemical solution. A plurality of gas collecting bags are arranged at one end of the gas conveying pipeline in parallel, and a plurality of gas washing bottles are arranged at the other end of the gas conveying pipeline in series. Along with the proceeding of gas transmission, the gas in the gas collecting bag is reduced, so that the appearance of the gas collecting bag is obviously compressed, an experimenter can replace the gas collecting bag in time at different time periods, and the stability of gas supply is improved. The stirring assembly is used for stirring to promote full mixing of the heated cigarette smoke and the chemical solution, so that the trapping efficiency is improved. A filter is further arranged at the gas outlet end of the gas conveying pipeline, smoke is condensed through a cooling assembly, condensate is captured through a filter screen and a filter element, and therefore capturing of gas-phase substances is promoted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heating cigarette smoke experimental equipment, and particularly relates to a multi-stage trapping device for gaseous substances in heating cigarette smoke. BACKGROUND

[0002] As a new type of tobacco product in recent years, heating cigarettes have the characteristics of "heating without burning", and the heating temperature is generally controlled between 200-350 DEG C. Compared with traditional cigarettes, harmful components generated in the combustion process can be significantly reduced, but the thermal cracking reaction intensity during puffing of the cartridge is also weakened, so the composition and distribution characteristics of the released flavor substances are obviously different from those of traditional cigarettes. In order to improve the smoke volume and meet the feeling, propylene glycol, glycerol and other humectants or atomizing aids are usually added in heating cigarettes, but the presence of these atomizing agents not only changes the release characteristics of gaseous substances, but also interferes with the trapping and detection of smoke components. In the prior art, a gaseous trapping device configured by a heating cigarette special smoking machine is usually used to trap gaseous components of heating cigarettes, but there are some problems. Since the gaseous component trapping device is usually arranged at the rear of the smoking machine, the gaseous trapping pipeline is relatively long, and the gaseous components are prone to loss during transmission. After long-term use, the puffing parameters are difficult to keep stable when the gaseous trapping function is started, which affects the experimental repeatability and result reliability. The smoke collection method of traditional combustion cigarettes is also difficult to directly adapt to the trapping requirements of gaseous components of heating cigarettes.

[0003] Therefore, it is necessary to develop a multi-stage processing device that can better adapt to the gaseous characteristics of heating cigarettes, so as to realize efficient trapping and separation without changing the real composition of gaseous substances, thereby providing reliable technical support for in-depth research and quantitative analysis of flavor components of heating cigarettes.

[0004] In the related art, a smoke trapping device for trapping cigarette smoke is provided, which mainly includes a gas tank, a gas conveying pipe and a gas washing bottle. The gas tank is used to collect the smoke output from the combustion device or the heating device, the gas tank is connected with the gas washing bottle through the gas conveying pipe, and the smoke is conveyed to the gas washing bottle through the gas conveying pipe. The gas washing bottle contains a chemical solution, and the chemical solution absorbs the flavor components in the smoke. However, since the smoke density is much smaller than that of the chemical solution, the mixing time of the smoke and the chemical solution is very short, which leads to a low trapping efficiency of the gas washing bottle for the flavor components in the smoke. At the same time, during the experiment, the experimenter cannot obtain the smoke storage amount in the gas tank in real time, which leads to an unstable gas supply to the gas washing bottle due to untimely replacement of the gas tank. SUMMARY

[0005] The present application aims to provide a multi-stage trapping device for gaseous substances in heating cigarette smoke, which has a high trapping efficiency of gaseous substances and a high stability of heating cigarette smoke supply.

[0006] To achieve the above object, the present application adopts the following technical solutions:

[0007] The present application provides a multi-stage trapping device for heating gas-phase substances in cigarette smoke, comprising:

[0008] A gas collection bag for storing heated cigarette smoke;

[0009] A gas washing bottle containing a chemical solution for absorbing gas-phase substances in the heated cigarette smoke;

[0010] A stirring assembly provided on the gas washing bottle for stirring the chemical solution;

[0011] A gas conveying pipeline, one end of which is provided with a plurality of gas collection bags in parallel, and the other end of which is provided with a plurality of gas washing bottles in series, the heated cigarette smoke in the gas collection bags being conveyed to the plurality of gas washing bottles in sequence through the gas conveying pipeline.

[0012] In one embodiment, the gas conveying pipeline comprises a plurality of main pipelines arranged in sections along the flow direction of the heated cigarette smoke, at least one end of each main pipeline being provided with a branch pipeline, and adjacent two main pipelines being communicated with the gas washing bottle through the corresponding branch pipeline.

[0013] In one embodiment, the gas washing bottle comprises a bottle body and a bottle cap threadedly connected with the bottle body, the bottle cap being provided with a through hole for penetrating the branch pipeline, and the inner wall of the bottle body being provided with a limiting plate for penetrating the gas conveying pipeline, one end of one branch pipeline extending below the liquid level of the chemical solution, and the other end of the other branch pipeline extending above the liquid level of the chemical solution.

[0014] In one embodiment, the stirring assembly comprises a motor, a stirring shaft and a paddle, the motor being mounted on the outer wall of the gas washing bottle, the stirring shaft being rotatably arranged on the inner wall of the gas washing bottle, the output end of the motor being connected with the stirring shaft, and a plurality of paddles being annularly arranged on the stirring shaft.

[0015] In one of the embodiments, the washing bottle comprises a bottle body and a bottle cap screwed with the bottle body, the stirring assembly comprises a hollow connecting shaft and a hollow aeration plate, the connecting shaft is arranged on the bottle cap, the aeration plate is arranged close to the bottom of the washing bottle and communicated with the connecting shaft, a plurality of air holes for outputting the heated cigarette smoke are arranged on the aeration plate, one of the branch pipes is detachably connected with the end of the connecting shaft away from the aeration plate, and the other branch pipe extends to above the liquid level of the chemical solution away from the end of the main pipe.

[0016] In one of the embodiments, the stirring assembly further comprises a driving member arranged on the bottle cap, the driving member is connected with the connecting shaft to drive the connecting shaft to rotate around the axis thereof.

[0017] In one of the embodiments, the installation assembly further comprises an upper support and a lower support, the lower support is arranged on the outer wall of the washing bottle, the upper support is detachably connected with the lower support, and the end of the upper support away from the lower support is inserted into the gas conveying pipe.

[0018] In one of the embodiments, a peristaltic pump is arranged on the gas conveying pipe, and the peristaltic pump is located between the gas collecting bag and the washing bottle.

[0019] In one of the embodiments, the inner side of the gas collecting bag is provided with an aluminum plastic film.

[0020] In one of the embodiments, a filter is arranged at the air outlet end of the gas conveying pipe, the filter comprises a shell, a cooling assembly, a filter core and a filter screen, the cooling assembly, the filter core and the filter screen are arranged in the shell, the cooling assembly is used for cooling the heated cigarette smoke, the filter screen is located downstream of the cooling assembly in the flow direction of the heated cigarette smoke, the filter core is arranged close to the cooling assembly, and the filter core and the filter screen are used for trapping the condensate in the heated cigarette smoke.

[0021] The present application has the following beneficial effects compared with the prior art:

[0022] The application discloses a multi-stage trapping device for heating gas-phase substances in heated cigarette smoke. BRIEF DESCRIPTION OF DRAWINGS

[0023] The application will be further described in detail below according to the drawings and examples.

[0024] Figure 1 It is a schematic view of the multi-stage trapping device for heating gas-phase substances in heated cigarette smoke of the application.

[0025] Figure 2 It is an installation schematic view of the gas washing bottle and the installation assembly of the application.

[0026] Figure 3 It is a schematic view of the bottle body of the application.

[0027] Figure 4 It is a schematic view of the stirring assembly of the application.

[0028] Figure 5 It is a schematic view of the filter of the application.

[0029] Figure 6 It is a schematic view of the gas washing bottle of the application.

[0030] In the drawings:

[0031] 1, gas bag; 2, gas pipeline; 21, main pipeline; 22, branch pipeline; 3, peristaltic pump; 4, gas washing bottle; 41, bottle body; 42, bottle cap; 421, through hole; 43, limiting plate; 5, filter; 51, shell; 52, cooling assembly; 53, filter screen; 54, brush; 55, filter core; 56, waste liquid pipe; 57, air inlet pipe; 58, air outlet pipe; 6, installation assembly; 61, upper support; 611, sleeve; 62, lower support; 7, stirring assembly; 71, motor; 72, stirring shaft; 73, paddle; 74, base; 75, connecting shaft; 76, aeration plate; 77, driving piece. DETAILED DESCRIPTION

[0032] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the present application are further illustrated below in conjunction with the accompanying drawings and through specific embodiments.

[0033] Embodiment one

[0034] As shown in Figure 1 and Figure 2 , the present application provides a multi-stage trapping device (hereinafter referred to as multi-stage trapping device) for trapping gas-phase substances in heated cigarette smoke. The multi-stage trapping device is used to trap gas-phase substances in heated cigarette smoke, so as to facilitate the research and analysis of flavor components in heated cigarettes. The heated cigarette smoke comes from a matching heating device, and the cigarette is heated to a certain temperature in the heating device, and the cigarette generates smoke.

[0035] The multi-stage trapping device includes a gas collection bag 1, a gas conveying pipeline 2, a gas washing bottle 4 and a stirring assembly 7. The gas collection bag 1 is a bag-shaped container, and the gas collection bag 1 is used to store the heated cigarette smoke generated by the heating device. The gas washing bottle 4 is a bottle-shaped container, and the gas washing bottle 4 contains a chemical solution, which is used to absorb the gas-phase substances in the heated cigarette smoke. The stirring assembly 7 is arranged on the gas washing bottle 4, and the stirring assembly 7 is used to stir the chemical solution, so that the chemical solution can be fully mixed with the heated cigarette smoke, so as to improve the absorption efficiency of the chemical solution to the gas-phase substances. The gas conveying pipeline 2 is used to convey the heated cigarette smoke, and one end of the gas conveying pipeline 2 is provided with a plurality of gas collection bags 1 in parallel, and the other end of the gas conveying pipeline 2 is provided with a plurality of gas washing bottles 4 in series. The heated cigarette smoke in the gas collection bag 1 is conveyed to the plurality of gas washing bottles 4 in turn through the gas conveying pipeline 2. In this embodiment, the gas collection bag 1 is installed on one side of the gas conveying pipeline 2 close to the inlet thereof, and the gas washing bottle 4 is installed on one side of the gas conveying pipeline 2 close to the outlet thereof. The gas collection bag 1 is arranged in parallel on the gas conveying pipeline 2, which means that a plurality of gas collection bags 1 are directly installed on the gas conveying pipeline 2, and under the condition that the gas collection bag 1 is in communication with the gas conveying pipeline 2, each gas collection bag 1 can directly input the heated cigarette smoke into the gas conveying pipeline 2. The gas washing bottle 4 is arranged in series on the gas conveying pipeline 2, which means that a plurality of gas washing bottles 4 are arranged along the axial direction of the gas conveying pipeline 2, and the gas conveying pipeline 2 is divided into a plurality of pipe sections by the gas washing bottles 4, and the gas washing bottles 4 play a role of connecting the pipe sections of the adjacent two gas conveying pipelines 2, and the cigarette smoke in the gas conveying pipeline 2 needs to enter each gas washing bottle 4 in turn.

[0036] It can be understood that by arranging multiple gas collection bags 1 in parallel on the gas conveying pipeline 2, the heated cigarette smoke is input into the gas washing bottle 4 by using the gas collection bag 1. As the gas conveying proceeds, the gas in the gas collection bag 1 is reduced, which causes the shape of the gas collection bag 1 to be obviously compressed, so as to facilitate the replacement of the gas collection bag 1 by the experimenter in time. At the same time, since multiple gas collection bags 1 are installed, the replacement of each gas collection bag 1 can be carried out at different time periods, so as to ensure that the gas washing bottle 4 can be continuously supplied with gas and the stability of the gas supply is improved. By arranging multiple gas washing bottles 4 in series on the gas conveying pipeline 2, the cigarette smoke can flow through the multiple gas washing bottles 4 in sequence, so as to improve the absorption efficiency of the gas phase substances and realize multi-stage trapping of the gas phase substances. At the same time, the chemical solution is stirred by using the stirring assembly 7, so as to promote the full mixing of the heated cigarette smoke and the chemical solution, and thus improve the trapping efficiency.

[0037] Specifically, the gas conveying pipeline 2 includes a main pipeline 21 and a branch pipeline 22. In the flow direction of the heated cigarette smoke, the gas conveying pipeline 2 includes multiple main pipelines 21, and adjacent two main pipelines 21 are separated. One end or both ends of the main pipeline 21 are provided with the branch pipeline 22, and adjacent two main pipelines 21 are communicated with the gas washing bottle 4 through the corresponding branch pipeline 22. In the embodiment, the main pipeline 21 is three, the branch pipeline 22 is four, and the gas washing bottle 4 is two. The ends of the adjacent two main pipelines 21 facing each other are provided with the branch pipeline 22. Each gas washing bottle 4 corresponds to two branch pipelines 22, one of which is used for inputting the heated cigarette smoke into the gas washing bottle 4, and the other is used for outputting the heated cigarette smoke from the gas washing bottle 4. The multi-stage trapping device further includes a peristaltic pump 3, which is arranged on the main pipeline 21 in the gas conveying pipeline 2. The peristaltic pump 3 is located between the gas collection bag 1 and the gas washing bottle 4, and the peristaltic pump 3 is used to provide power for the flow of the heated cigarette smoke, so that the heated cigarette smoke in the gas collection bag 1 flows through the gas conveying pipeline 2 towards the gas washing bottle 4.

[0038] Specifically, referring to Figure 2 and Figure 3As shown, the washing bottle 4 comprises a bottle body 41 and a bottle cap 42, the bottle cap 42 is arranged on the opening end of the bottle body 41 and is threadedly connected with the bottle body 41. The bottle cap 42 is provided with a through hole 421 for penetrating the branch pipe 22, that is, each bottle cap 42 is provided with two through holes 421. Two limiting plates 43 are arranged on the inner wall of the bottle body 41, and the two limiting plates 43 are used for penetrating the branch pipe 22. The two limiting plates 43 are respectively opposite to the two through holes 421, so that one of the branch pipes 22 can be simultaneously penetrated in the corresponding through hole 421 and limiting plate 43. Among the two branch pipes 22 connected with the washing bottle 4, one of the branch pipes 22 is used for inputting the heated cigarette smoke, the inlet end of the branch pipe 22 is connected with the main pipe 21, and the outlet end of the branch pipe 22 extends below the liquid level of the chemical solution. In order to make the heated cigarette smoke fully mixed with the chemical solution, the outlet end of the branch pipe 22 for inputting the heated cigarette smoke extends to the bottom of the washing bottle 4. The other branch pipe 22 is used for outputting the heated cigarette smoke, the outlet end of the branch pipe 22 is connected with the main pipe 21, and the inlet end of the branch pipe 22 extends above the liquid level of the chemical solution. During the trapping process, the heated cigarette smoke is transported to the bottom area of the washing bottle 4 through one of the branch pipes 22, the heated cigarette smoke floats to above the liquid level in the form of bubbles, and then the heated cigarette smoke flows into the downstream main pipe 21 through the other branch pipe 22.

[0039] Specifically, referring to Figure 2 and Figure 4 As shown, the stirring assembly 7 is installed on the washing bottle 4. The stirring assembly 7 comprises a motor 71, a stirring shaft 72, paddles 73 and a base 74. The base 74 is installed on and penetrates the bottle body 41. The base 74 comprises sealing members, bearings and other components for installing the output end of the motor 71 or the stirring shaft 72. The motor 71 is installed on the outer wall of the bottle body 41. The stirring shaft 72 is rotationally arranged on the base 74, and one end of the stirring shaft 72 extends into the interior of the washing bottle 4. One end of the stirring shaft 72 is connected with the output end of the motor 71, and the stirring shaft 72 is driven to rotate around its own axis by the motor 71. The paddles 73 are arranged on the end of the stirring shaft 72 away from the motor 71, and the paddles 73 are a plurality of paddles 73 which are distributed along the circumferential direction of the stirring shaft 72. With the rotation of the stirring shaft 72, the paddles 73 stir the chemical solution in the washing bottle 4, so that the heated cigarette smoke is fully mixed with the chemical solution, so as to improve the trapping efficiency of the gas phase substances.

[0040] Specifically, referring to Figure 2As shown, the multi-stage trapping device further comprises a mounting assembly 6 which serves as a connecting and fixing function between the gas washing bottle 4 and the gas conveying pipeline 2. The mounting assembly 6 comprises an upper support 61 and a lower support 62. The lower support 62 is in the shape of "L", one end of the lower support 62 is connected with the bottle body 41, and the other end of the lower support 62 extends upward. The upper support 61 comprises a vertical rod arranged vertically and a sleeve 611 arranged at the top of the vertical rod, the sleeve 611 is used for plug-in connection with the gas conveying pipeline 2, that is, the gas conveying pipeline 2 is arranged in the sleeve 611. The vertical rod of the upper support 61 is plug-in connected with the end of the lower support 62 which is away from the bottle body 41, and the vertical rod and the lower support 62 are fixedly connected through hand screwing, so as to realize the detachable connection between the upper support 61 and the lower support 62, and facilitate the disassembly of the gas washing bottle 4. In order to improve the installation stability of the gas washing bottle 4, two mounting assemblies 6 are arranged on the two sides of the gas washing bottle 4 respectively.

[0041] In particular, with reference to Figure 5As shown, the multi-stage trapping device further comprises a filter 5, which is arranged at one side of the gas conveying pipe 2 close to the outlet, i.e. the filter 5 is arranged downstream of the washing bottle 4. The filter 5 comprises a housing 51, a cooling assembly 52, a filter screen 53, a filter element 55 and a brush 54. The housing 51 forms an accommodating cavity inside, the outlet end of the gas conveying pipe 2 is communicated with the accommodating cavity inside the housing 51 through an air inlet pipe 57, and the heated cigarette smoke discharged from the washing bottle 4 finally enters the housing 51. The cooling assembly 52 is arranged in the housing 51, and the cooling assembly 52 is used for cooling treatment of the heated cigarette smoke to promote the heated cigarette smoke to condense into liquid. The cooling assembly 52 is a prior art, and the existing semiconductor refrigeration sheet or liquid cooling pipe can be selected. The filter screen 53 is arranged in the housing 51, and along the flow direction of the heated cigarette smoke, the filter screen 53 is located downstream of the cooling assembly 52. When the heated cigarette smoke passes through the filter screen 53, the filter screen 53 can trap the condensed liquid in the heated cigarette smoke. Specifically, the housing 51 is provided with an air outlet pipe 58 for discharging the heated cigarette smoke and a waste liquid pipe 56 for discharging the cooled waste liquid. The air inlet pipe 57 and the air outlet pipe 58 are arranged at the top of the housing 1, and the waste liquid pipe 56 is arranged at the bottom of the housing 1. The filter screen 53 is horizontally arranged in the housing 51, and the filter screen 53 divides the accommodating cavity in the housing 51 into two chambers. The cooling assembly 52 is two, and the two cooling assemblies 52 are arranged above the filter screen 53, and the filter element 55 is arranged between the two cooling assemblies 52. In this embodiment, by arranging the cooling assembly 52, the filter element 55 and the filter screen 53, the gaseous substances in the heated cigarette smoke which are not absorbed by the chemical solution or do not react with the chemical solution or the particulate substances existing in the heated cigarette smoke can be trapped by the filter screen 53 or the filter element 55, which can improve the trapping efficiency of the gaseous substances and also trap the substances that cannot be trapped by the washing bottle 4. The brush 54 is arranged in the accommodating cavity, and the brush 54 abuts against the filter screen 53. The brush 54 is connected with a motor to drive the brush 54 to rotate on the filter screen 53, so as to avoid that a large amount of condensed liquid is adsorbed in the mesh of the filter screen 53 and affects the circulation of the cigarette smoke.

[0042] Specifically, the gas collecting bag 1 is made of heat insulation material to avoid condensation of the heated cigarette smoke in the gas collecting bag 1. The inner side of the gas collecting bag 1 is provided with an aluminum plastic film, which has good barrier effect to avoid absorption of the heated cigarette smoke by the material of the gas collecting bag 1. At the same time, it can also avoid decomposition of new substances from the gas collecting bag 1 under the action of high temperature of the heated cigarette smoke, thereby avoiding the inclusion of the material components of the gas collecting bag 1 in the heated cigarette smoke.

[0043] Embodiment two

[0044] Reference Figure 6As shown, the multi-stage trapping device in the embodiment is similar to that in Embodiment One, except that the stirring assembly 7 comprises a connecting shaft 75 and an aeration plate 76. Both the connecting shaft 75 and the aeration plate 76 are hollow structures, and heated cigarette smoke can flow inside. The connecting shaft 75 is arranged in the center of the bottle cap 42, and one end of the connecting shaft 75 is connected with the branch pipe 22 for inputting heated cigarette smoke, and the other end extends to the bottom of the washing bottle 4. The aeration plate 76 is arranged at the bottom of the washing bottle 4, and is connected with the connecting shaft 75 and communicates with the connecting shaft 75. The upper surface of the aeration plate 76 is provided with a plurality of air holes for outputting heated cigarette smoke, and the heated cigarette smoke in the branch pipe 22 is sequentially conveyed to the chemical solution through the connecting shaft 75 and the aeration plate 76. The plurality of air holes are uniformly distributed on the upper surface of the aeration plate 76, so that the heated cigarette smoke can be uniformly mixed with the chemical solution to improve the trapping efficiency. The branch pipe 22 for inputting heated cigarette smoke is detachably connected with the end of the connecting shaft 75 away from the aeration plate 76, and the end of the branch pipe 22 for outputting heated cigarette smoke away from the main pipe 21 extends above the liquid level of the chemical solution. The heated cigarette smoke after reacting with the chemical solution flows into the main pipe 21 downstream through the branch pipe 22.

[0045] To further improve the trapping efficiency of gas-phase substances, the stirring assembly 7 further comprises a driving member 77 arranged on the bottle cap 42, and the driving member 77 is connected with the connecting shaft 75 to drive the connecting shaft 75 to rotate around its axis. The driving member 77 comprises a motor and a gear transmission assembly, and the motor is drivingly connected with the connecting shaft 75 through the gear transmission assembly to drive the connecting shaft 75. The gear transmission assembly is a prior art, which has a speed reduction function to enable the connecting shaft 75 to rotate slowly. By arranging the driving member 77, the aeration plate 76 can rotate in the chemical solution. The heated cigarette smoke discharged from the aeration plate 76 can be more fully mixed in the chemical solution, thereby improving the trapping efficiency of gas-phase substances. Correspondingly, since the connecting shaft 75 needs to rotate, the connecting shaft 75 is connected with the branch pipe 22 through a rotatable adapter.

[0046] The beneficial effects of the embodiment are that: by arranging multiple gas collecting bags 1 in parallel on the gas conveying pipeline 2, the heated cigarette smoke is input into the gas washing bottle 4 by the gas collecting bag 1. As the gas conveying proceeds, the gas in the gas collecting bag 1 is reduced, which causes the shape of the gas collecting bag 1 to be obviously compressed, so as to facilitate the experimental personnel to replace the gas collecting bag 1 in time. At the same time, since multiple gas collecting bags 1 are installed, the replacement of each gas collecting bag 1 in different periods can be carried out, so as to ensure that the gas washing bottle 4 can be continuously supplied with gas and the stability of the gas supply is improved. By arranging multiple gas washing bottles 4 in series on the gas conveying pipeline 2, the heated cigarette smoke can flow through the multiple gas washing bottles 4 in turn, so as to improve the absorption efficiency of the gas phase substances and realize multi-stage trapping of the gas phase substances. At the same time, the stirring assembly 7 is used to stir the chemical solution, so as to promote the full mixing of the heated cigarette smoke and the chemical solution, thereby improving the trapping efficiency.

[0047] The above is only the preferred embodiment of the present application, and for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed, and the content of the description should not be understood as a limitation of the present application.

Claims

1. A multi-stage trapping device for heating gas phase substances in cigarette smoke, characterized by, The utility model provides a kind of gas collection bag, gas washing bottle and gas pipeline, and the gas collection bag is used to store heated cigarette smoke;The gas washing bottle is filled with chemical solution, and the chemical solution is used to absorb gas phase material in the heated cigarette smoke;The stirring assembly is arranged on the gas washing bottle, and the stirring assembly is used to stir the chemical solution;One end of the gas pipeline is provided with a plurality of gas collection bags in parallel, and the other end of the gas pipeline is provided with a plurality of gas washing bottles in series, and the heated cigarette smoke in the gas collection bag is sequentially conveyed into a plurality of gas washing bottles through the gas pipeline. Along the flow direction of the heated cigarette smoke, the gas pipeline comprises a plurality of main pipes arranged in isolation, at least one end of the main pipe is provided with a branch pipe, and the adjacent two main pipes are communicated with the gas washing bottle through the corresponding branch pipe. The gas washing bottle comprises a bottle body and a bottle cap threadedly connected with the bottle body, the bottle cap is provided with a through hole for penetrating the branch pipe, and the inner wall of the bottle body is provided with a limiting plate for penetrating the gas pipeline, one end of one of the branch pipes extends below the liquid level of the chemical solution away from the main pipe, and the other end of the other branch pipe extends above the liquid level of the chemical solution away from the main pipe. The stirring assembly comprises a motor, a stirring shaft and a paddle, the motor is mounted on the outer wall of the gas washing bottle, the stirring shaft is rotatably arranged on the inner wall of the gas washing bottle, the output end of the motor is connected with the stirring shaft, and a plurality of paddles are annularly arranged on the stirring shaft. The gas washing bottle comprises a bottle body and a bottle cap threadedly connected with the bottle body, the stirring assembly comprises a hollow connecting shaft and a hollow aeration plate, the connecting shaft penetrates the bottle cap, the aeration plate is close to the bottom of the gas washing bottle and is communicated with the connecting shaft, a plurality of gas holes for outputting the heated cigarette smoke are arranged on the aeration plate, one end of one of the branch pipes is detachably connected with the connecting shaft away from the aeration plate, and the other end of the other branch pipe extends above the liquid level of the chemical solution away from the main pipe.

2. The multi-stage trapping device for heating gas-phase substances in cigarette smoke according to claim 1, wherein The stirring assembly further comprises a driving member, the driving member is arranged on the bottle cap, and the driving member is connected with the connecting shaft to drive the connecting shaft to rotate around its axis.

3. The multi-stage trapping device for heating gas-phase substances in cigarette smoke according to claim 2, wherein The utility model further comprises a mounting assembly, the mounting assembly comprises an upper support and a lower support, the lower support is arranged on the outer wall of the gas washing bottle, the upper support is detachably connected with the lower support, and one end of the upper support away from the lower support is inserted into the gas pipeline.

4. The multi-stage trapping device for heating gas-phase substances in cigarette smoke according to claim 3, wherein The utility model further comprises a peristaltic pump, and the peristaltic pump is arranged on the gas pipeline and located between the gas collection bag and the gas washing bottle.

5. The multi-stage trapping device for heating gas-phase substances in cigarette smoke according to claim 2, wherein The inner side of the gas collection bag is provided with an aluminum plastic film.

6. The multi-stage trapping device for heating gas-phase substances in cigarette smoke according to claim 5, wherein ​ 7. The multi-stage trapping device for heating gas-phase substances in cigarette smoke according to claim 1, wherein ​ 8. The multi-stage trapping device for heating gas-phase substances in cigarette smoke according to any one of claims 1 to 7, characterized in that, ​ 9. The multi-stage trapping device for heating gas-phase substances in cigarette smoke according to any one of claims 1 to 7, characterized in that, ​ 10. The multi-stage trapping device for heating gas-phase substances in cigarette smoke according to any one of claims 1 to 7, characterized in that, The filter is arranged at an air outlet end of the air conveying pipe, and comprises a shell, a cooling assembly, a filter element and a filter screen. The cooling assembly, the filter element and the filter screen are arranged in the shell. The cooling assembly is used for cooling the heated cigarette smoke. The filter screen is located downstream of the cooling assembly in the flow direction of the heated cigarette smoke. The filter element is arranged close to the cooling assembly. The filter element and the filter screen are used for trapping condensate in the heated cigarette smoke.

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