A cigarette filter tip additive de-coke and harm reduction test smoking machine and a test method thereof

Abstract

The application discloses a cigarette filter tip additive de-ignition and harm reduction test smoking machine and a test method thereof, and belongs to the field of tobacco detection equipment. The application overcomes the single-function defect of traditional smoking machines, and aims at developing a multifunctional test assembly and test scheme which are urgently needed for cigarette filter tip additives. The multifunctional test assembly and test scheme can not only realize the detection of cigarette smoke components by traditional smoking machines, but also comprehensively test and analyze the de-ignition and harm reduction performance of cigarette filter tip additives. The multi-site synchronous cigarette lighter can realize the simultaneous detection of multiple cigarette samples, and solves the problem of large test error of traditional smoking machines. The rotary self-switching additive filling cabin and the rotary adsorption sampling area realize the continuous test function of different additives, and the operation is convenient. The four detection schemes of adsorption sampling, test paper detection, photochemical detection and residual gas collection detection are combined, the composition of cigarette smoke can be accurately and comprehensively detected, and the de-ignition and harm reduction test of different additives is realized.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of data tobacco detection equipment, and particularly relates to a cigarette filter tip additive de-coke and harm reduction test smoking machine and a test method thereof. BACKGROUND

[0002] Since the 1950s when the cigarette filter was popularized, the industry has always focused on the reduction of mainstream smoke such as tar, CO and benzo[a]pyrene around the two main lines of “filter material upgrading” and “ventilation dilution”. In order to break through the defects of traditional acetate fiber filters in intercepting tar beads, gas-phase free radicals and CO small molecule toxic components, in recent years, the second generation of functional filters such as activated carbon loading, ion exchange fiber and molecular sieve composite yarn have appeared. These filters can reduce tar to 3 mg per cigarette and CO by 30%-45% in the laboratory stage. However, the current tobacco industry cigarette smoking machine cannot meet the test needs of the second generation or even the third generation of functional filters. The ISO 3308, ISO 4387 and CORESTA No. 74 standard smoking machine methods provide a benchmark for measuring tar, nicotine and CO, but their original intention is to “evaluate cigarettes”, not “evaluate media”. If the adsorbent or catalyst is directly loaded in the filter section for testing, the following technical contradictions will be encountered: ① The straight smoke channel of the standard smoking machine cannot be compatible with the variable diameter filter holder, resulting in air leakage at the junction of the functional section and the cigarette section, and the RSD of the suction capacity fluctuation is >8%; ② The Cambridge filter is located downstream of the cigarette, and the functional medium is located upstream of the cigarette. After the particulate matter is adsorbed and desorbed twice, the tar data is severely distorted, and a “negative reduction” illusion may occur; ③ The catalyst / adsorbent needs to be activated at a specific temperature, humidity and oxygen content window, while the standard machine constant temperature and humidity box only controls the environment (22 °C and 60% RH), and has no sub-zone control ability for the smoke cone temperature field (600-900 °C) and the filter section temperature field (35-55 °C), resulting in experimental reproducibility <65%. More importantly, the existing smoking machine cannot simulate the dynamic impact of the “suction curve” of real consumers on the functional medium. If “standard—deep—custom” multi-mode suction cannot be realized on the same equipment, the portability of any laboratory data to the industrial end is zero.

[0003] However, there is no special smoking device that can meet the above technical requirements in the current domestic and foreign public literature and patents. Patent CN 202310096616.2 discloses a smoking machine device and an air purifier test system, which can automatically complete the functions of adding smoke and lighting, but cannot realize the detection of filter material performance, and the closed receiving bin is not conducive to operation. Patent CN 202110276927.8 discloses a cigarette dynamic suction resistance measuring device based on a rotating disc smoking machine, which can continuously monitor and record the filter end pressure data during the suction process of the test cigarette on the rotating disc smoking machine, and then calculate and arrange the dynamic suction resistance of each branch through database processing. The function of this device is relatively simple, but it can provide resistance data for the smoking machine. Patent CN 201410492491.6 discloses a push-type automatic cigarette inserting device, which can automatically insert a cigarette into a smoking nozzle, improving the automation level of the smoking machine. In general, in the prior art, some functions of the traditional smoking machine can be automated, but the comprehensive test of the performance of the additive (adsorbent or catalyst) for the cigarette filter cannot be realized. This blank has become a "neck" link for new filter materials to go from the laboratory to industrialization. SUMMARY

[0004] In order to overcome the shortcomings of the traditional smoking machine, such as single function, inability to detect the performance of the additive for the cigarette filter, and inconvenient operation, the present application provides a test smoking machine for the additive for the cigarette filter and a test method thereof.

[0005] An object of the present application is to provide a test smoking machine for the additive for the cigarette filter.

[0006] The test smoking machine for the additive for the cigarette filter of the present application comprises: a multi-point synchronous lighter, a size self-matching filter holder, a multi-channel stable flow smoke collector, a rotating wheel type self-switching additive filling cabin, a rotating wheel type adsorption sampling area, a test paper detection area, a photochemical detection area, a suction pump and a residual gas collection cabin, and a total controller arranged in sequence along a central axis; wherein,

[0007] The multi-point synchronous lighter comprises: a one-dimensional translation device and a plurality of ignition units; the plurality of ignition units are installed on the one-dimensional translation device, and the one-dimensional translation device drives the ignition units to simultaneously displace forward and backward along the central axis direction;

[0008] The size self-matching filter holder comprises a plurality of size-adjustable filter holders corresponding to the ignition units;

[0009] The multi-channel stable flow smoke collector comprises a plurality of channels corresponding to the filter holders, and the bottom of each filter holder is installed at the top end of the corresponding channel; the ends of the plurality of channels converge at one point;

[0010] The rotating self-switching additive filling cabin comprises a filling cabin rotor and a plurality of filling cabin chambers, and the filling cabin rotor is provided with a plurality of filling cabin chambers symmetrically about the rotation axis of the filling cabin rotor, and different batches or types of additives or no additives are filled in the filling cabin chambers;

[0011] The rotating adsorption sampling area comprises a sampling area rotor and a plurality of sampling area chambers, and the sampling area rotor is provided with a plurality of sampling area chambers symmetrically about the rotation axis of the sampling area rotor, and different batches or types of adsorbents or no adsorbents are filled in the sampling area chambers;

[0012] The ends of the plurality of channels, the rotating self-switching additive filling cabin, the rotating adsorption sampling area, the test paper detection area and the photochemical detection area are sequentially connected to the residual gas collection cabin through the pipeline along the central axis and the suction pump;

[0013] The multi-point synchronous lighter, the filling cabin rotor, the sampling area rotor, the suction pump and the residual gas collection cabin are respectively connected to the general controller.

[0014] In the multi-point synchronous lighter, the one-dimensional translation device comprises a motor and a propelling screw; the propelling screw is installed on the rotation shaft of the motor, and the rotation shaft of the motor is located on the central axis; the front end of the propelling screw is fixed to the rear surface of the mounting plate, the mounting plate is perpendicular to the central axis, and a plurality of ignition units are arranged on the front surface of the mounting plate; the ignition unit is an ignition coil arranged on the mounting column, and each ignition coil is located on the same vertical plane perpendicular to the central axis; the ignition coil reaches high temperature after being electrified and heated; the motor controls the propelling screw to push the ignition unit along the central axis at a set speed, close to the cigarette sample fixed on the size self-matching cigarette holder, and the propelling process ensures that the plurality of ignition coils can be in contact with the tobacco end of the cigarette sample at the same time, so as to ignite all the cigarette samples at the same time; the motor and the ignition coil are respectively connected to the general controller, and the motor and the ignition coil are controlled to work by the general controller, and the power supply of each ignition coil is the same.

[0015] In the size self-matching cigarette holder fixer, the cigarette holder fixing ring corresponds to the ignition unit in number and position of vertical face, and the inner diameter of the cigarette holder fixing ring is smaller than the outer diameter of the cigarette sample. The cigarette holder fixing ring is made of a material with contraction elasticity, such as polytetrafluoroethylene, polyurethane elastomer, styrene or polyamide. The filter plug of the cigarette sample is inserted into the cigarette holder fixing ring, and the cigarette holder fixing ring clamps the cigarette sample by means of the contraction elasticity. The cigarette holder fixing ring automatically adjusts the size of the fixing ring by the contraction elasticity of itself to match cigarette samples of different sizes, such as medium, thin and thick. The shape of the cigarette holder fixing ring is not a full-closed ring, but a ring formed by overlapping the two ends. Since the fixing ring is made of a specific elastic material, when an external force is applied, the cigarette holder fixing ring is opened to expand the inner area to match cigarette holders of different sizes. When the external force is removed, the cigarette holder fixing ring is rolled into a ring again under the elastic force of the cigarette holder fixing ring to fix the cigarette holder, and at the same time, the overlapping part of the cigarette holder fixing ring is restored to prevent air leakage. Only a small part of the fixing ring is completely fixed at the top of the hole, and most of it is completely attached to the bottom plate and movable under stress. The close attachment will not leak air.

[0016] In the multi-hole stable flow smoke collector, a small part of the bottom of each cigarette holder fixing ring is fixed at the top of the corresponding hole; the size of the hole is not adjustable, and it is recommended to use the diameter of a medium cigarette as the size of the hole; the ends of multiple holes converge at one point; the smoke generated by all test cigarette samples is collected through the multi-hole stable flow smoke collector, and the collected smoke is transmitted to the rotary self-switching additive filling cabin; it also includes a fixed cover, and multiple holes are installed in the fixed cover for fixing and protection; the end of the multi-hole stable flow smoke collector is connected to the rotary self-switching additive filling cabin through a pipeline along the central axis.

[0017] In the runner type self-switching additive filling cabin, the filling cabin runner and multiple filling cabin chambers; the filling cabin runner can rotate around its own rotation shaft, and the rotation shaft of the filling cabin runner is parallel to the central axis; the rotation shaft of the filling cabin runner is installed on a rotary motor, and the rotary motor is connected to the general controller; multiple filling cabin chambers symmetrical about the rotation shaft are opened on the filling cabin runner, the center of the filling cabin chamber to the rotation shaft of the filling cabin runner is equal to the distance from the rotation shaft of the filling cabin runner to the central axis, different batches or types of additives are filled in the filling cabin chamber, the filling cabin chamber and the corresponding additive constitute an additive filling unit, or the filling cabin chamber is not filled with additives; the general controller controls the rotation of the filling cabin runner around its own rotation shaft, switches to the corresponding additive filling unit coaxially communicated with the pipeline, so that the flue gas enters the corresponding additive, thereby testing the corresponding additive, realizing the deslagging and harm reduction test of different additives, or switching to the filling cabin chamber without additives so that the flue gas directly passes through the runner type self-switching additive filling cabin; the runner type self-switching additive filling cabin is also equipped with a filling cabin temperature controller for regulating the temperature of the runner type self-switching additive filling cabin; the flue gas after additive deslagging and harm reduction or without direct transmission is transmitted to the runner type adsorption sampling area; the runner type self-switching additive filling cabin is communicated to the runner type adsorption sampling area through the pipeline along the central axis.

[0018] In the runner type adsorption sampling area, the sampling area runner can rotate around its own rotation shaft, and the rotation shaft of the sampling area runner is parallel to the central axis; the rotation shaft of the sampling area runner is installed on a rotary motor, and the rotary motor is connected to the general controller; multiple sampling area chambers symmetrical about the rotation shaft are opened on the sampling area runner, the center of the sampling area chamber to the rotation shaft of the sampling area runner is equal to the distance from the rotation shaft of the sampling area runner to the central axis, different batches or types of adsorption materials are filled in the sampling area chamber, and an adsorption unit is constituted; the general controller controls the rotation of the sampling area runner, switches to the corresponding adsorption unit coaxially communicated with the pipeline, so that the flue gas after additive deslagging and harm reduction enters the corresponding adsorption material, realizes the continuous sampling and loading of the adsorption material, or switches to the sampling area chamber without adsorption material; the runner type adsorption sampling area is also equipped with a sampling area temperature controller for regulating the temperature of the runner type adsorption sampling area; the sampled flue gas is transmitted to the test paper detection area; after the test is completed, the adsorption material is taken out, and after quantitative solvent extraction, it is sent to a professional analysis instrument for quantitative detection and analysis to obtain the components of the adsorbed material; the adsorption material uses acetate fiber, Cambridge filter, activated carbon, molecular sieve or graphene; the runner type adsorption sampling area is communicated to the test paper detection area through the pipeline along the central axis.

[0019] The test paper detection area comprises: a test paper detection box and a plurality of test paper filling ports; wherein the test paper detection box is hollow inside, and a plurality of test paper filling ports are arranged on the surface of the test paper detection box; the test paper is inserted into the test paper detection box through the test paper filling ports, and the test paper is replaced through the test paper filling ports; after the test is completed, the test paper is taken out and sent to a professional equipment for analysis and detection; if the adsorption sampling area is provided with adsorption materials, the components of the smoke after adsorption sampling are detected; if the adsorption sampling area is not provided with adsorption materials, the total components of the smoke are detected; the smoke passing through the test paper detection area flows to the photochemical detection area; the test paper detection area is connected to the photochemical detection area through a pipeline along the central axis.

[0020] The photochemical detection area comprises: a high-transparency tube and a photochemical sensor; wherein the material of the high-transparency tube can be quartz glass, SUPRASIL high-purity quartz glass or ultraviolet glass (i.e. UV-cut optical glass), and a photochemical sensor is attached to the high-transparency tube for real-time monitoring of the chemical composition in the cigarette smoke; the photochemical detection area is connected to the suction pump through a pipeline along the central axis.

[0021] One or more of the rotary adsorption sampling area, the test paper detection area and the photochemical detection area are selected to work.

[0022] The suction pump is connected to the total controller; the suction pump controls the pressure and flow rate conditions of the suction cigarette smoke, realizes different rate suction of the cigarette smoke, provides power for the flow of the smoke, controls the constant flow, constant pressure flow or variable frequency (variable flow and variable pressure) flow of the smoke; the suction pump is connected to the collection cabin through a pipeline along the central axis. The suction pump adopts a controllable variable frequency suction pump, which is set to a constant pressure suction, a constant flow suction or a variable frequency suction mode by the total controller, for simulating different smoking processes.

[0023] The residual gas collection cabin comprises: a cabin body and a gate valve; wherein the gate valve is connected to the total controller; the cabin body is a sealed structure with an internal cavity, and an air inlet and an air outlet are arranged at both ends of the cabin body respectively; the gate valves are arranged at the air inlet and the air outlet respectively; a pipeline along the central axis is connected to the air inlet, the smoke is throttled by the gate valve, the air outlet is used as a sampling port, and then the collected smoke is transferred from the sampling port to a gas collection bag for detecting the chemical composition of the cigarette smoke.

[0024] The additive is an adsorbent or a catalyst.

[0025] Further, the application further comprises a constant temperature, constant humidity and constant pressure cabin, which has a closed space inside, a multi-point synchronous cigarette lighter, a size self-matching cigarette holder fixing device, a multi-channel stable flow smoke collector, a rotating wheel type self-switching additive filling cabin, a rotating wheel type adsorption sampling area, a test paper detection area, a photochemical detection area, a suction pump and a residual gas collection cabin are placed in the cabin; the constant temperature, constant humidity and constant pressure cabin is equipped with a temperature regulator, a humidity regulator and a pressure regulator, which are connected to a general controller respectively; the general controller controls the temperature regulator to keep the temperature in the constant temperature, constant humidity and constant pressure cabin at a set temperature through refrigeration or heating; the general controller controls the humidity regulator to keep the humidity in the constant temperature, constant humidity and constant pressure cabin at a set humidity through dehumidification or humidification; the general controller controls the pressure regulator to keep the air pressure in the constant temperature, constant humidity and constant pressure cabin at a set pressure of 60-105 kPa through air supplement or air extraction.

[0026] Another object of the application is to provide a test method for removing tar and reducing harm of additives for cigarette filters.

[0027] The test method for removing tar and reducing harm of additives for cigarette filters comprises the following steps:

[0028] 1) According to the same standard, the filters of a plurality of cigarette samples are cut off or only 1-3 mm of the acetate fiber part is reserved, the number of the cigarette samples is less than the number of the cigarette fixing rings of the size self-matching cigarette holder fixing device, the processed plurality of cigarette samples are installed on the size self-matching cigarette holder fixing device according to the symmetry distribution principle, and the remaining cigarette fixing rings are closed by using a head to close the connected channels;

[0029] 2) Test smoking machine preparation:

[0030] Different batches or types of additives or no additives are filled in the filling cabin chamber, the general controller controls the rotation of the filling cabin rotating wheel, and the corresponding filling cabin chamber is switched to coaxially communicate with the pipeline; the general controller controls the rotating wheel type self-switching additive filling cabin to reach a set temperature through the filling cabin temperature controller;

[0031] One or more of the rotating wheel type adsorption sampling area, the test paper detection area and the photochemical detection area are selected to work;

[0032] The working mode of the suction pump is set to work;

[0033] 3) The general controller controls the ignition unit to work, the general controller controls the one-dimensional translation device to drive the ignition unit to move along the central axis towards the cigarette sample, when the cigarette sample is ignited, the one-dimensional translation device is controlled to stop moving, and the multi-point synchronous cigarette lighter is automatically returned to the original position;

[0034] 4) When the cigarette is ignited, the suction pump is controlled to start the suction of the simulated smoking process; the smoke generated by the suction is collected through the multi-channel stable flow smoke collector, and the collected smoke is transmitted to the rotating wheel type self-switching additive filling cabin;

[0035] 5)The flue gas passes through the corresponding additive or directly through the rotary self-switching additive filling cabin;

[0036] 6)The flue gas passes through the rotary adsorption sampling area, test paper detection area and photochemical detection area in turn;

[0037] 7)The flue gas passing through the suction pump flows into the residual gas collection cabin;

[0038] 8)After the test is completed, the composition of the flue gas is analyzed.

[0039] Further, the cigarette filter tip additive de-coke and harm reduction smoking machine is located in a constant temperature, humidity and pressure cabin, the total controller controls the temperature regulator to maintain the set temperature in the constant temperature, humidity and pressure cabin by refrigeration or heating; the total controller controls the humidity regulator to maintain the set humidity in the constant temperature, humidity and pressure cabin by dehumidification or humidification; the total controller controls the pressure regulator to maintain the set air pressure 60~105 kPa in the constant temperature, humidity and pressure cabin by supplementing or removing air.

[0040] In step 2), selecting one or more of the rotary adsorption sampling area, test paper detection area and photochemical detection area includes the following steps:

[0041] a)Rotary adsorption sampling area: the total controller controls the rotation of the sampling area rotary wheel to switch to the corresponding sampling area chamber coaxial communication with the pipeline, and when working, the sampling area chamber filled with different batches or types of adsorbent material is coaxial communication with the pipeline; when not working, the sampling chamber without filling adsorbent material is communicated with the pipeline; the total controller controls the rotary adsorption sampling area to reach the set temperature through the sampling area temperature controller;

[0042] b)Test paper detection area: when working, the corresponding test paper is filled in the test paper filling port of the test paper detection area, and the gap between the test paper and the test paper filling port is sealed with a sealing strip; when not working, the test paper filling port is sealed with a sealing strip;

[0043] c)Photochemical detection area: when working, the photochemical sensor is turned on, and when not working, the photochemical sensor is turned off;

[0044] In step 2), the suction pump adopts a controllable variable frequency suction pump, which is set by the total controller to work in a constant pressure suction, constant flow suction or variable frequency suction mode, which is used to simulate different smoking processes; the constant pressure suction has a constant pressure range of-1200 Pa~0 Pa, the constant flow suction has a flow rate range of 0~100 ml / s, and the variable frequency suction.

[0045] In step 6), when the rotary adsorption sampling area works, the flue gas after the damage reduction by the additive passes through the corresponding adsorption material; when the test paper detection area works, the flue gas is transmitted to the test paper in the test paper detection area; and when the photochemical detection area works, the photochemical sensor records the chemical composition of the cigarette flue gas in real time.

[0046] In step 8), after the test is completed, the adsorption material is taken out, and after quantitative solvent extraction, it is sent to a professional analysis instrument for quantitative detection and analysis to obtain the flue gas components intercepted by the adsorption material; the test paper is taken out and sent to a professional equipment for analysis and detection, if the adsorption sampling area is filled with adsorption material, the residual flue gas components after the adsorption sampling are detected; if the adsorption sampling area is not filled with adsorption material, the total components of the flue gas are detected; if the rotary self-switching additive filling cabin is switched to the filling cabin chamber without filling the additive, the function of the traditional smoking machine for detecting the components of the cigarette flue gas can be realized; if it is switched to the filling cabin chamber with the corresponding additive coaxially communicated with the pipeline, the flue gas enters the corresponding additive, so that the corresponding additive is tested, and the damage reduction test of different additives is realized.

[0047] Advantages of the present application:

[0048] The present application overcomes the single function of the traditional smoking machine, adds a multifunctional test experiment assembly and test scheme urgently needed for the development of cigarette filter additives, can not only realize the detection function of the traditional smoking machine for the components of the cigarette flue gas, but also can comprehensively test and analyze the damage reduction performance of the cigarette filter additives; the multi-site synchronous lighter can realize the simultaneous detection of multiple cigarette samples, and solves the problem of large test error of the traditional smoking machine; the rotary self-switching additive filling cabin and the rotary adsorption sampling area realize the continuous test function of different additives, and the operation is convenient; the four detection schemes of adsorption sampling, test paper detection, photochemical detection and residual gas collection detection can accurately and comprehensively detect the components of the cigarette flue gas. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 It is a front view of an embodiment of the cigarette filter additive damage reduction test smoking machine of the present application;

[0050] Figure 2 It is a top view of an embodiment of the cigarette filter additive damage reduction test smoking machine of the present application;

[0051] Figure 3 It is a partial enlarged view of the filter holder ring of the size self-matching filter holder of an embodiment of the cigarette filter additive damage reduction test smoking machine of the present application;

[0052] Figure 4A schematic view of a channel of a multi-channel steady flow smoke collector of an embodiment of the cigarette mouthpiece additive de-coke and harm reduction test smoking machine of the present application. DETAILED DESCRIPTION

[0053] The present application is further described below in conjunction with specific embodiments with reference to the accompanying drawings.

[0054] As shown in Figure 1 and 2 , the cigarette mouthpiece additive de-coke and harm reduction test smoking machine of the present embodiment comprises a constant temperature, humidity and pressure cabin, a multi-point synchronous lighter 1, a size self-matching mouthpiece holder 2, a multi-channel steady flow smoke collector 3, a rotating wheel type self-switching additive filling cabin 4, a rotating wheel type adsorption sampling area 5, a test paper detection area 6, a photochemical detection area 7, a suction pump 8 and a residual gas collection cabin 9, as well as a power supply and a general controller; wherein the constant temperature, humidity and pressure cabin has a closed space inside, and the multi-point synchronous lighter 1, the size self-matching mouthpiece holder 2, the multi-channel steady flow smoke collector 3, the rotating wheel type self-switching additive filling cabin 4, the rotating wheel type adsorption sampling area 5, the test paper detection area 6, the photochemical detection area 7, the suction pump 8 and the residual gas collection cabin 9 arranged along the central axis are placed in the cabin; the constant temperature, humidity and pressure cabin is equipped with a temperature regulator, a humidity regulator and a pressure regulator, which are respectively connected to the general controller;

[0055] The multi-point synchronous lighter 1 comprises a motor 11, a propelling screw 12 and an ignition unit 13; the propelling screw 12 is installed on the rotating shaft of the motor 11, and the rotating shaft of the motor 11 is located on the central axis; the front end of the propelling screw 12 is fixed to the rear surface of a mounting plate, which is perpendicular to the central axis, and twelve ignition units 13 are arranged on the front surface of the mounting plate; each ignition unit 13 is an ignition coil arranged on a mounting column, and each ignition coil is on the same vertical plane perpendicular to the central axis, and the axis of each ignition coil is parallel to the central axis; the ignition coil reaches a high temperature after being powered on; the motor 11 controls the propelling screw 12 to push the ignition units 13 along the central axis at a set speed, close to the cigarette samples fixed on the size self-matching mouthpiece holder 2, and the pushing process ensures that multiple ignition coils can contact the tobacco end of the cigarette samples at the same time to ignite all the cigarette samples at the same time; the motor 11 and the ignition coil are respectively connected to the power supply and the general controller, powered by the power supply, and controlled by the general controller to work, and the power supply of each ignition coil is the same;

[0056] The size self-matching mouthpiece holder 2 comprises twelve size-adjustable mouthpiece fixing rings, which correspond to the ignition units, have the same number and are opposite in vertical plane position; as shown in Figure 3As shown, the cigarette holder retaining ring is not a fully closed ring, but rather a ring formed by overlapping and staggered ends. Only 1 / 4 of the retaining ring is completely fixed to the top of the channel, while the remaining part is only fully attached to the base plate and can move under force. Because the retaining ring is made of a specific elastic material, when a force is applied, the retaining ring opens, thereby expanding the inner area to match cigarette holders of different sizes. When the force is removed, under the elastic action of the retaining ring, it curls back into a ring to fix the cigarette holder in place. At the same time, the overlapping parts of the retaining ring return to a tight fit to prevent air leakage. The inner diameter of the retaining ring is smaller than the outer diameter of the cigarette sample.

[0057] The multi-channel steady-flow flue gas collector 3 includes: twelve channels 31 and a fixing cover 32, with the bottom 1 / 4 portion of each nozzle fixing ring fixed to the top of the corresponding channel 31; such as Figure 4 As shown, the ends of the twelve channels 31 converge at one point; the smoke generated by all the test cigarette samples is collected by the multi-channel 31 flow stabilizer smoke collector 3, and the collected smoke is transmitted to the rotary self-switching additive filling chamber 4; the twelve channels 31 are installed in the fixed cover 32 for fixing and protection.

[0058] The end of the multi-channel stabilizing flue gas collector 3 is connected to the rotary self-switching additive filling chamber 4 via a pipe along the central axis. The rotary self-switching additive filling chamber 4 includes a filling chamber rotor 41 and twelve filling chambers 42. The filling chamber rotor 41 can rotate around its own axis, and the axis 43 of the filling chamber rotor 41 is parallel to the central axis. The axis of the filling chamber rotor 41 is mounted on a rotary motor, which is connected to a main controller, which controls the rotation of the filling chamber rotor 41. Twelve openings are provided on the filling chamber rotor 41. The filling chamber 42 is symmetrical about its own axis of rotation. The distance from the center of the filling chamber 42 to the axis of rotation of the filling chamber rotor 41 is equal to the distance from the axis of rotation of the filling chamber rotor 41 to the central axis. Different batches or types of additives are filled in the filling chamber 42. The filling chamber 42 and the corresponding additives constitute an additive filling unit. The rotary self-switching additive filling chamber 4 is also equipped with a filling chamber temperature controller to regulate the temperature of the rotary self-switching additive filling chamber 4. The flue gas after de-coking and harm reduction by the additives is transmitted to the rotary adsorption sampling area 5.

[0059] The rotating wheel type self-switching additive filling cabin 4 is communicated to the rotating wheel type adsorption sampling area 5 through the pipeline along the central axis, and the rotating wheel type adsorption sampling area 5 comprises a sampling area rotating wheel 51 and twelve sampling area chambers 52; the sampling area rotating wheel 51 can rotate around its rotating shaft, and the rotating shaft of the sampling area rotating wheel 51 is parallel to the central axis; the rotating shaft 53 of the sampling area rotating wheel 51 is coaxial with the rotating shaft of the filling cabin rotating wheel, and the rotating shaft of the sampling area rotating wheel 51 is installed on a rotating motor, and the rotating motor is connected to the general controller, and the general controller controls the common rotation of the sampling area rotating wheel 51 and the filling cabin rotating wheel; twelve sampling area chambers 52 symmetrical about the rotating shaft of the sampling area rotating wheel 51 are formed in the sampling area rotating wheel 51, the center of the sampling area chamber 52 is away from the rotating shaft of the sampling area rotating wheel 51 by a distance equal to the distance from the rotating shaft of the sampling area rotating wheel 51 to the central axis, different batches or types of adsorption materials are filled in the sampling area chamber 52 to form an adsorption unit; the rotating wheel type adsorption sampling area 5 is also equipped with a sampling area temperature controller for regulating the temperature of the rotating wheel type adsorption sampling area 5;

[0060] The rotating wheel type adsorption sampling area 5 is communicated to the test paper detection area 6 through the pipeline along the central axis, and the test paper detection area 6 comprises a test paper detection box 61 and three test paper filling ports 62; the test paper detection box 61 is hollow inside, and three test paper filling ports 62 are formed on the surface of the test paper detection box 61;

[0061] The test paper detection area 6 is communicated to the photochemical detection area 7 through the pipeline along the central axis; the photochemical detection area 7 comprises a high-transparency tube 71 made of quartz and a photochemical sensor 72, and the photochemical sensor 72 is additionally arranged on the high-transparency tube 71;

[0062] The photochemical detection area 7 is communicated to the suction pump 8 through the pipeline along the central axis; the suction pump 8 is connected to the general controller;

[0063] The suction pump 8 is communicated to the residual gas collection cabin 9 through the pipeline along the central axis, and the residual gas collection cabin 9 comprises a cabin body 91 and a gate valve 92; the gate valve 92 is connected to the general controller; the cabin body 91 is a sealed structure hollow inside, and an air inlet and an air outlet are respectively arranged at two ends of the cabin body 91, and the gate valve 92 is arranged at the air inlet and the air outlet respectively; the pipeline along the central axis is connected to the air inlet, the flue gas is throttled by the gate valve in equal volume, the air outlet is used as a sampling port 93, and then the collected flue gas is transferred from the sampling port to a gas collection bag for detecting the chemical composition of the cigarette flue gas.

[0064] In the embodiment, the cigarette mouthpiece fixing ring is made of polytetrafluoroethylene with shrinkable elasticity; the diameter of a medium-sized cigarette is used as the size of the hole; the suction pump 8 is a controllable variable frequency suction pump 8; the adsorption material is acetate fiber; and the additive is an adsorbent or a catalyst.

[0065] The test method for removing tar and reducing harm of the additive for the cigarette mouthpiece in the embodiment comprises the following steps:

[0066] 1) Cut the filter of six cigarette samples according to the same standard or only keep the 2mm acetate fiber part, the number of cigarette samples is less than the number of the cigarette fixing rings of the size self-matching cigarette fixing device 2, install the processed six cigarette samples on the size self-matching cigarette fixing device 2 according to the symmetry distribution principle, the filter of the cigarette sample is inserted into the cigarette fixing ring, the cigarette fixing ring clamps the cigarette sample by the contraction elasticity, the size of the fixing ring is automatically adjusted by the contraction elasticity of the fixing ring itself to match the cigarette samples of different sizes, and the remaining six cigarette fixing rings are installed with end caps to close the connected channels;

[0067] 2) Test smoking machine preparation:

[0068] The total controller controls the temperature regulator to maintain the set temperature in the constant temperature, humidity and pressure cabin by refrigeration or heating; the total controller controls the humidity regulator to maintain the set humidity in the constant temperature, humidity and pressure cabin by dehumidification or humidification; the total controller controls the pressure regulator to maintain the set air pressure 60-105 kPa in the constant temperature, humidity and pressure cabin by supplementing or removing air;

[0069] Fill the filling cabin chamber with different batches or types of additives, the total controller controls the filling cabin rotating wheel to rotate, switches to the coaxial communication of the corresponding additive filling unit and pipeline, and the total controller controls the rotating wheel type self-switching additive filling cabin 4 to reach the set temperature through the filling cabin temperature controller;

[0070] Set the working mode of the suction pump 8; the suction pump 8 is set to: constant pressure suction (pressure set to-300 Pa), constant flow suction (flow rate set to 45 ml / s) or variable frequency suction working mode (flow rate changes from 25 ml / s to 55 ml / s, flow rate increases by 3 ml / s per second, then flow rate decreases from 55 ml / s to 30 ml / s, flow rate decreases by 2 ml / s per second, and finally the flow rate is kept stable at 30 ml / s), which is used to simulate different smoking processes;

[0071] The rotating wheel type adsorption sampling area 5, test paper detection area 6 and photochemical detection area 7 all work;

[0072] a) Rotating wheel type adsorption sampling area 5: the total controller controls the sampling area rotating wheel to rotate, switches to the coaxial communication of the corresponding sampling area chamber and pipeline, the sampling area chamber is filled with different batches or types of adsorbent materials, realizes the continuous sampling and filling of the adsorbent materials; the total controller controls the rotating wheel type adsorption sampling area 5 to reach the set temperature through the sampling area temperature controller;

[0073] b) Test paper detection area 6: the test paper is inserted into the test paper detection box through the test paper filling port, and the gap between the test paper and the test paper filling port is sealed with a sealing strip, and the test paper is replaced through the test paper filling port;

[0074] c) Photochemical detection zone 7: open photochemical sensor;

[0075] 3) The total controller controls the ignition unit to work, and the total controller controls the one-dimensional translation device to drive the ignition unit to move along the central axis towards the cigarette sample. When the cigarette sample is ignited, the control one-dimensional translation device stops moving, and the multi-point synchronous lighter 1 automatically returns to the original position;

[0076] 4) When the cigarette is ignited, the control suction pump 8 starts to simulate the suction of the smoking process. The total controller controls the suction pump 8 to work according to the set working mode. The suction pump 8 controls the pressure and flow rate conditions of the cigarette smoke, realizes different rates of suction of the cigarette smoke, and provides power for the flow of the smoke. The control smoke flows at a constant flow rate, a constant pressure, or a variable frequency (variable flow rate and variable pressure). The smoke generated by suction is collected by the multi-porous stable flow smoke collector 3, and the collected smoke is transmitted to the rotary self-cutting additive replacement cabin;

[0077] 5) The smoke enters the corresponding additive, so as to test the corresponding additive, and realize the coking and harm reduction test of different additives;

[0078] 6) The smoke after the coking and harm reduction by the additive enters the corresponding adsorption material in the rotary adsorption sampling area 5. The sampled smoke is transmitted to the test paper detection area 6, and the smoke is transmitted to the test paper in the test paper detection area 6. The smoke passing through the test paper detection area 6 flows to the photochemical detection area 7, and the photochemical sensor records the chemical composition of the cigarette smoke in real time. When the rotary adsorption sampling area works, the smoke after the coking and harm reduction by the additive passes through the corresponding adsorption material. When the test paper detection area works, the smoke is transmitted to the test paper in the test paper detection area. When the photochemical detection area works, the photochemical sensor records the chemical composition of the cigarette smoke in real time

[0079] 7) The smoke passing through the photochemical detection area 7 flows to the suction pump 8. The smoke passing through the suction pump 8 flows to the residual gas collection cabin 9. The volume of the smoke is throttled by the gate valve;

[0080] 8) When the cigarette burns to the specified remaining length, the suction pump 8 is turned off. The volume of the gate valve of the residual gas collection cabin 9 is closed, and the trapped gas is transferred to the gas collection bag through the sampling port for detection of the chemical composition of the cigarette smoke. After the test is completed, the adsorption material is taken out, and after quantitative solvent extraction, it is sent to the gas chromatograph-mass spectrometer for quantitative detection and analysis to obtain the smoke components intercepted by the adsorption material after the coking and harm reduction by the additive, realize the coking and harm reduction test of different additives, and take out the test paper for professional equipment analysis and detection. The test paper is detected to obtain the component smoke composition remaining after the adsorption sampling.

[0081] The test apparatus is cleaned, the filling wheel of the rotating wheel self-switching additive filling tank 4 and the sampling wheel of the rotating wheel adsorption sampling zone 5 are rotated, and new additive adsorption material is switched in preparation for the next set of tests.

[0082] Finally, it is important to note that the embodiments disclosed herein are intended to be illustrative only and that changes can be made to the described embodiments, by one skilled in the art, without departing from the spirit and scope of the application which is defined by the following claims.

Claims

1. A cigarette holder additive for tar removal and harm reduction testing smoking machine, characterized in that, The experimental smoking machine includes: a multi-point synchronous cigarette lighter, a size-matching mouthpiece holder, a multi-channel steady-flow smoke collector, a rotary self-switching additive filling chamber, a rotary adsorption sampling area, a test strip detection area, a photochemical detection area, a suction pump, a residual gas collection chamber, and a main controller, arranged sequentially along the central axis; wherein... The multi-point synchronous cigarette lighter includes a one-dimensional translation device and multiple ignition units; the multiple ignition units are mounted on the one-dimensional translation device, and the one-dimensional translation device drives the ignition units to move simultaneously along the central axis. The size-matching mouthpiece retainer includes multiple size-adjustable mouthpiece retaining rings corresponding to the ignition unit; The multi-channel steady-flow flue gas collector includes multiple channels corresponding to the mouthpiece retaining ring, with the bottom of each mouthpiece retaining ring installed at the top of the corresponding channel; the ends of the multiple channels converge at one point. The rotary self-switching additive filling chamber includes a filling chamber rotary wheel and multiple filling chamber chambers. Multiple filling chamber chambers symmetrical about their own axis of rotation are opened on the filling chamber rotary wheel. The filling chamber chambers are filled with additives or not filled with additives. The rotary adsorption sampling area includes a sampling area rotor and multiple sampling area chambers. Multiple sampling area chambers symmetrical about their own rotation axis are opened on the sampling area rotor. The sampling area chambers are filled with adsorbent material or not filled with adsorbent material. The end of the multi-channel steady-flow flue gas collector, the rotary self-switching additive filling chamber, the rotary adsorption sampling area, the test paper detection area and the photochemical detection area are sequentially connected to the residual gas collection chamber through a pipe along the central axis via a suction pump. The multi-point synchronous cigarette lighter, filling chamber wheel, sampling area wheel, suction pump and residual gas collection chamber are respectively connected to the main controller.

2. The experimental smoking machine according to claim 1, characterized in that, The one-dimensional translation device includes a motor and a propulsion screw; the propulsion screw is mounted on the motor's shaft, which is located on the central axis; the front end of the propulsion screw is fixed to the rear surface of the mounting plate, which is perpendicular to the central axis, and multiple ignition units are arranged on the front surface of the mounting plate; each ignition unit is an ignition coil mounted on a mounting post, and each ignition coil is located on the same vertical plane perpendicular to the central axis; the motor and the ignition coils are respectively connected to the main controller, which controls the propulsion screw to push the ignition units along the central axis at a set speed through the motor.

3. The experimental smoking machine according to claim 1 or 2, characterized in that, The cigarette holder retaining ring corresponds to the ignition unit, and the number of rings is the same and their vertical surfaces are opposite each other. The inner diameter of the cigarette holder retaining ring is smaller than the outer diameter of the cigarette sample. It is made of a material with shrinkage elasticity. The filter of the cigarette sample is inserted into the cigarette holder retaining ring. The cigarette holder retaining ring clamps the cigarette sample by shrinkage elasticity and automatically adjusts the size of the retaining ring by its own shrinkage elasticity.

4. The experimental smoking machine according to claim 1, characterized in that, It also includes a fixing cover, with multiple channels installed inside the fixing cover.

5. The experimental smoking machine according to claim 1, characterized in that, The filling chamber rotor can rotate around its own axis, which is parallel to the central axis. The filling chamber rotor is connected to the main controller. The distance from the center of the filling chamber to the axis of the filling chamber rotor is equal to the distance from the axis of the filling chamber rotor to the central axis. The main controller controls the rotation of the filling chamber rotor to switch to the corresponding filling chamber filled with or without additives, which is coaxially connected to the pipeline, so that the flue gas passes through the corresponding additive or directly through the rotor-type self-switching additive filling chamber.

6. The experimental smoking machine according to claim 1, characterized in that, The sampling zone wheel can rotate around its own axis, which is parallel to the central axis. The sampling zone wheel is connected to the main controller. The distance from the center of the sampling zone chamber to the axis of the sampling zone wheel is equal to the distance from the axis of the sampling zone wheel to the central axis. The main controller controls the rotation of the sampling zone wheel, switching to the corresponding sampling zone chamber filled with adsorbent material or without adsorbent material, which is coaxially connected to the pipeline, so that the flue gas passes through the corresponding adsorbent material or directly through the wheel-type adsorption sampling zone.

7. The experimental smoking machine according to claim 1, characterized in that, The test strip detection area includes: a test strip detection box and multiple test strip filling ports; wherein, the interior of the test strip detection box is hollow, and multiple test strip filling ports are provided on the surface of the test strip detection box; the test strip is inserted into the test strip detection box through the test strip filling ports, and the test strip is replaced through the test strip filling ports.

8. The experimental smoking machine according to claim 1, characterized in that, The photochemical detection area includes a high-permeability tube and a photochemical sensor; wherein, the photochemical sensor is set on the photochemical detection area for real-time monitoring of the chemical composition in cigarette smoke.

9. The experimental smoking machine according to claim 1, characterized in that, The residual gas collection chamber includes: a chamber body and a gate valve; wherein, the gate valve is connected to the main controller; the chamber body is a hollow, sealed structure, with an air inlet and an exhaust outlet respectively provided at both ends of the chamber body; and gate valves are respectively installed at the air inlet and the exhaust outlet.

10. A test method for a cigarette holder additive for tar removal and harm reduction testing according to claim 1, characterized in that, The experimental method includes the following steps: 1) Install the processed cigarette samples onto the size-matching mouthpiece holder according to the principle of symmetrical distribution, and seal the remaining mouthpiece retaining ring to close the connecting channel; 2) Preparation of the test smoke extraction machine: The filling chamber is filled with additives or not filled with additives. The main controller controls the rotation of the filling chamber wheel to switch to the corresponding filling chamber and connect it coaxially with the pipeline. Choose one or more functions from the rotary adsorption sampling area, the test strip detection area, and the photochemical detection area; Set the suction pump to work in the specified operating mode. 3) The main controller controls the ignition unit to work. The main controller controls the one-dimensional translation device to drive the ignition unit to move along the central axis toward the cigarette sample. When the cigarette sample is lit, the one-dimensional translation device stops moving and the multi-point synchronous cigarette lighter returns to its position. 4) At the same time the cigarette is lit, the suction pump is controlled to start the suction process to simulate smoking; the smoke generated by the suction is collected by the multi-channel steady flow smoke collector, and the collected smoke is transmitted to the rotary self-switching additive filling chamber. 5) The flue gas is filled with appropriate additives or directly through a rotary self-switching additive filling chamber; 6) The flue gas passes sequentially through the wheel adsorption sampling area, the test paper detection area, and the photochemical detection area; 7) The flue gas passed through the suction pump flows to the residual gas collection chamber; 8) After the experiment, the composition of the flue gas was analyzed.

11. The test method according to claim 10, characterized in that, In step 2), selecting one or more of the rotating adsorption sampling area, the test strip detection area, and the photochemical detection area includes the following steps: a) Rotary adsorption sampling area: The main controller controls the rotation of the sampling area wheel, switching to the corresponding sampling area chamber which is coaxially connected to the pipeline. When working, the sampling area chamber filled with adsorbent material is connected to the pipeline; when not working, the sampling area chamber without adsorbent material is connected to the pipeline. b) Test strip detection area: When working, the corresponding test strip is filled into the test strip filling port in the test strip detection area, and the gap between the test strip and the test strip filling port is sealed with a sealing strip. When not working, the test strip filling port is sealed with a sealing strip. c) Photochemical detection area: The photochemical sensor is turned on when working and turned off when not working.

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