Device and method for detecting ventilation rate and processing quality stability of cigarette filter

Abstract

The invention discloses a device and a method for detecting ventilation rate and processing quality stability of cigarette filters. The detection device comprises a quantitative suction unit, a cigarette sealing unit and a flow detection unit. The quantitative suction unit comprises a flow control component (2) and a suction device (6); the cigarette sealing unit comprises a cut tobacco section circumferential sealing device (5) and a filter tip section sealing connecting piece (4); the flow detection unit includes a flow detection element (3). According to the detection device for the ventilation rate processing quality stability of the cigarette filter, the influence of resistance (cigarette cut tobacco section suction resistance) formed on the upstream of cigarette fluid flowing in the formation of the ventilation rate of the filter on a detection result is effectively eliminated, and the quality stability characteristics of a ventilation processing section of the filter are directly reflected. The detection device is simple in structure and convenient to operate. Besides, the method for detecting the ventilation rate processing quality stability of the cigarette filter does not need to damage the cigarette, belongs to nondestructive detection, and is beneficial for realizing online detection of the quality.

Description

Technical Field

[0001] The invention belongs to the field of cigarette quality detection, and in particular relates to a device and method for detecting the processing quality stability of cigarette filter ventilation rate using a filter ventilation design. Background Art

[0002] At present, smoking is harmful to health, while low-tar cigarettes are popular among consumers. The design method of low-tar cigarettes is generally realized by adjusting the parameters of three papers and one rod. Among them, filter ventilation technology is one of the widely used technologies, and the measurement of filter ventilation rate is a key indicator of product quality detection, which has an important impact on sensory quality and smoke composition. Therefore, the stability of filter ventilation rate is one of the core indicators affecting cigarette products and brand reputation. The applicant's previous research work shows that the formation of filter ventilation is not only related to the size, depth, shape and other factors of the airflow channel formed by online or offline perforation, but also closely related to the type and area of ​​glue applied during the formation and rolling process of the filter rod and the process parameters of the rolling equipment. More importantly, the formation of filter ventilation rate is closely related to the resistance (suction resistance) formed upstream of the flow of cigarette fluid. It can be described in detail here as follows: when the upstream resistance increases, even if it is completely guaranteed that the channel characteristics formed by the punching are absolutely consistent with the performance formed by the quality factors of the rolling process, the filter ventilation rate detection data will also increase. Conversely, when the upstream resistance decreases, the filter ventilation rate detection data will also decrease under the condition of ensuring that other external conditions are absolutely consistent. The upstream resistance is mainly composed of the filling state of tobacco in the cigarette, the air permeability of cigarette paper and the filling state of the filter rod upstream of the filter ventilation hole. The filling state of tobacco is due to the high-speed operation of the cigarette making machine and the uncertainty of the tobacco state, which will significantly affect the stability of the filling state of tobacco in the cigarette, and then affect the stability evaluation of the filter ventilation rate. Therefore, only using the standard deviation of the current ventilation rate data of multiple cigarette filters to characterize the stability of the filter ventilation rate will bring about more deviations and misjudge the causes of process quality problems.

[0003] In order to solve the above problems, the present invention is proposed. Summary of the invention

[0004] The present invention is to solve the above problems and the shortcomings of the detection method, and proposes a detection device and method for the stability of cigarette filter ventilation rate processing quality, aiming to better provide product manufacturers with a basis for judging when there are problems with process quality.

[0005] The present invention discloses a detection device and method for the stability of processing quality of ventilation rate of cigarette filters. The detection device comprises a quantitative suction unit, a cigarette sealing unit, and a flow detection unit; the quantitative suction unit comprises a flow control component 2 and a suction device 6; the cigarette sealing unit comprises a tobacco segment circumferential sealing device 5 and a filter segment sealing connector 4; the flow detection unit comprises a flow detection element 3. The detection device for the stability of processing quality of ventilation rate of cigarette filters of the present invention effectively removes the influence of the resistance (the suction resistance of the tobacco segment of the cigarette) formed upstream of the flow of cigarette fluid in the formation of the filter ventilation rate on the detection result, and directly reflects the quality stability characteristics of the filter ventilation processing section. The detection device has a simple structure and is easy to operate. In addition, the detection method for the stability of processing quality of ventilation rate of cigarette filters of the present invention does not need to destroy the cigarettes, and is a non-destructive test, which helps to realize the online detection of the quality.

[0006] The technical solution of the present invention is as follows:

[0007] The first aspect of the present invention provides a device for detecting the stability of the processing quality of ventilation rate of cigarette filters, characterized in that it comprises a quantitative suction unit, a cigarette sealing unit, and a flow detection unit;

[0008] The tested cigarette comprises a filter segment 1 and a tobacco segment 9, wherein the filter segment 1 has a ventilation hole 11;

[0009] The quantitative suction unit is located at the far filter end of the tested cigarette, and comprises a flow control component 2 and a suction device 6. The flow control component 2 is connected to the suction device 6 via an air path connector 7. The flow control component 2 can perform flow control, and the suction device 6 realizes fluid flow by suction.

[0010] The cigarette sealing unit comprises a tobacco segment circumferential sealing device 5 and a filter segment sealing connector 4, wherein the tobacco segment circumferential sealing device 5 is located at the periphery of the tobacco segment 9, and the tobacco segment circumferential sealing device 5 has a tobacco segment end airflow channel 53 at one end away from the filter segment sealing connector 4, and the tobacco segment end airflow channel 53 is connected to the flow control component 2 through the air path connector 7; the filter segment sealing connector 4 is located at the periphery of the filter segment 1, and has a ventilation hole airflow channel 43 corresponding to the ventilation hole 11;

[0011] The flow detection unit includes a flow detection element 3 , which is connected to the vent airflow channel 43 via the air path connector 7 , and the flow detection element 3 is in communication with the ventilation hole 11 via the air path connector 7 and the vent airflow channel 43 .

[0012] Preferably, the filter segment sealing connector 4 has a filter segment end airflow channel 44 at one end away from the filter segment sealing connector 4 .

[0013] Preferably, the detection device for the stability of the processing quality of the cigarette filter ventilation rate also includes a fixed or adjustable airflow resistance load device 8, and the fixed or adjustable airflow resistance load device 8 is connected to the airflow channel 44 at the end of the filter segment through the air path connector 7.

[0014] Preferably, the tested cigarette is a cigarette with ventilation design, and the filter ventilation rate in conventional testing ranges from 5% to 90%. The ventilation holes 11 can be formed by online or offline punching.

[0015] Preferably, the flow control component 2 controls the suction flow in a controllable range of 5 ml / s to 50 ml / s, and preferably the flow controllable range is 15 ml / s to 30 ml / s.

[0016] Preferably, the filter segment sealing connector 4 includes a filter segment clamping device 41 and a filter sealing structure 42;

[0017] The filter segment clamping device 41 clamps the side surfaces of both ends of the filter segment 1;

[0018] The filter sealing structure 42 forms a seal on the side surface of the filter segment 1 , but the ventilation hole 11 and the end surface of the filter segment 1 away from the tobacco segment 9 are not sealed.

[0019] Preferably, the flow detection element 3 is a laminar flow meter with a detection range of 5 ml / s to 50 ml / s, preferably, a detection range of 15 ml / s to 30 ml / s.

[0020] Preferably, the tobacco shred segment circumferential sealing device 5 further comprises tobacco shred segment clamping devices 51 and tobacco shred sealing structural members 52 on the surfaces of both ends of the tobacco shred segment;

[0021] The tobacco segment clamping device 51 clamps the side surfaces of both ends of the tobacco segment 9;

[0022] The tobacco sealing structure 52 forms a seal on the side surface of the tobacco segment 9, but the end surface of the tobacco segment 9 away from the filter segment 1 is not sealed;

[0023] The filter segment sealing connector 4 is connected to the tobacco segment circumferential sealing device 5 so as to seal the end face of the tobacco segment 9 close to the filter segment 1 and the end face of the filter segment 1 close to the tobacco segment 9 .

[0024] Preferably, the fixed or adjustable airflow resistance load device 8 has an optional fixed airflow load with a pressure difference range of 600Pa to 3000Pa at a flow rate of 17.5ml / s, and preferably, has a pressure difference range of 800Pa to 1500Pa at 17.5ml / s.

[0025] The second aspect of the present invention provides a method for detecting the stability of processing quality of ventilation rate of cigarette filters, using the device for detecting the stability of processing quality of ventilation rate of cigarette filters described in the first aspect of the present invention, which comprises the following steps:

[0026] S1, placing the tested cigarette into the cigarette filter ventilation rate processing quality stability detection device, and connecting various components;

[0027] S2, the circumferential sealing device 5 of the tobacco shreds is opened to form a circumferential seal on the tobacco shreds 9, and the air tightness of the connection of each component is detected at the same time, the suction device 6 and the flow detection element 3 are turned on, and the suction capacity of the suction device 6 is set. After the fluid flow process is stable, that is, after the data of the flow detection element 3 is stable, the data is read and recorded, and the suction device 6 and the flow detection element 3 are turned off to complete the experiment;

[0028] S3, replace the tested cigarette sample into the detection device, repeat the above operation process to the set number of times, calculate the average value and standard deviation of multiple repeated experiments, and this standard deviation can characterize the stability of the filter ventilation rate processing quality.

[0029] Preferably, the filter segment sealing connector 4 has a filter segment end airflow channel 44 at one end away from the filter segment sealing connector 4. The cigarette filter ventilation rate processing quality stability detection device further includes a fixed or adjustable airflow resistance load device 8, and the fixed or adjustable airflow resistance load device 8 is connected to the filter segment end airflow channel 44 through the air path connector 7.

[0030] When the fixed or adjustable airflow resistance load device 8 is provided, in step S2, the circumferential sealing device 5 of the tobacco segment is opened to form a circumferential seal on the tobacco segment 9, and the airtightness of the connection between the components is detected at the same time. The suction device 6 and the flow detection element 3 are turned on, and the suction capacity of the suction device 6 and the load of the fixed or adjustable airflow resistance load device 8 are set. After the fluid flow process is stable, that is, the data of the flow detection element 3 is stable, the data is read and recorded, and the suction device 6 and the flow detection element 3 are closed to complete the experiment.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. In the detection device for the processing quality stability of cigarette filter ventilation rate of the present invention, the quantitative suction unit is located at the far filter end of the tested cigarette, and the flow detection element 3 is connected with the ventilation hole 11 on the filter segment 1 through the air path connector 7 and the ventilation hole airflow channel 43, which effectively eliminates the influence of the resistance (the suction resistance of the tobacco segment of the cigarette) formed upstream of the flow of the cigarette fluid in the formation of the filter ventilation rate on the detection result, and directly reflects the quality stability characteristics of the filter ventilation processing segment.

[0033] 2. The device for detecting the stability of the processing quality of the cigarette filter ventilation rate of the present invention has a simple structure and is easy to operate.

[0034] 3. The method for detecting the stability of the processing quality of the ventilation rate of cigarette filters of the present invention does not require the destruction of cigarettes, and is a non-destructive test, which helps to achieve online detection of the quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the detection device for the stability of cigarette filter ventilation rate.

[0036] Figure 2 Schematic diagram of a device for testing the stability of cigarette filter ventilation rate with an airflow resistance load device.

[0037] The names of the figure marks in the figure description are: 1-filter segment; 11-ventilation hole; 2-flow control component; 3-flow detection element; 4-filter segment sealing connector; 41-filter segment clamping device; 42-filter sealing structural member; 43-ventilation hole airflow channel; 44-filter segment end airflow channel; 5-tobacco segment circumferential sealing device; 51-tobacco segment clamping device; 52-tobacco sealing structural member; 53-tobacco segment end airflow channel; 6-suction device; 7-air path connector; 8-fixed or adjustable airflow resistance load device; 9-tobacco segment. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with embodiments.

[0039] Those skilled in the art will appreciate that the following examples are only used to illustrate the present invention and should not be considered to limit the scope of the present invention. If no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the art or the product specifications are used. If the manufacturer of the materials or equipment used is not specified, they are all conventional products that can be purchased.

[0040] Those skilled in the art will appreciate that, unless expressly stated otherwise, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" to another element, it may be directly connected to the other element, or there may be intermediate elements. In addition, the "connection" used herein may include wireless connections.

[0041] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two. The terms "inside", "upper", "lower", etc., indicating positions or state relationships, are based on the positions or state relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operate in a specific position, and therefore cannot be understood as limiting the present invention.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0043] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0044] The implementation process is further described with reference to the accompanying drawings.

[0045] like Figure 1 and Figure 2 As shown, the first aspect of the present invention provides a device for detecting the stability of cigarette filter ventilation rate processing quality, characterized in that it comprises a quantitative suction unit, a cigarette sealing unit, and a flow detection unit;

[0046] The tested cigarette comprises a filter segment 1 and a tobacco segment 9, wherein the filter segment 1 has a ventilation hole 11;

[0047] The quantitative suction unit is located at the far filter end of the tested cigarette, and comprises a flow control component 2 and a suction device 6. The flow control component 2 is connected to the suction device 6 via an air path connector 7. The flow control component 2 can perform flow control, and the suction device 6 realizes fluid flow by suction.

[0048] The cigarette sealing unit comprises a tobacco segment circumferential sealing device 5 and a filter segment sealing connector 4, wherein the tobacco segment circumferential sealing device 5 is located at the periphery of the tobacco segment 9, and the tobacco segment circumferential sealing device 5 has a tobacco segment end airflow channel 53 at one end away from the filter segment sealing connector 4, and the tobacco segment end airflow channel 53 is connected to the flow control component 2 through the air path connector 7; the filter segment sealing connector 4 is located at the periphery of the filter segment 1, and has a ventilation hole airflow channel 43 corresponding to the ventilation hole 11;

[0049] The flow detection unit includes a flow detection element 3 , which is connected to the vent airflow channel 43 via the air path connector 7 , and the flow detection element 3 is in communication with the ventilation hole 11 via the air path connector 7 and the vent airflow channel 43 .

[0050] The filter segment sealing connector 4 has a filter segment end airflow channel 44 at one end away from the filter segment sealing connector 4 .

[0051] The device for detecting the stability of the processing quality of the cigarette filter ventilation rate further comprises a fixed or adjustable airflow resistance load device 8 , which is connected to the airflow channel 44 at the end of the filter segment via the air path connector 7 .

[0052] The tested cigarette is a cigarette with ventilation design, and the filter ventilation rate ranges from 5% to 90% in conventional testing. The ventilation holes 11 can be formed by online or offline punching.

[0053] The flow control component 2 controls the suction flow in a controllable range of 5 ml / s to 50 ml / s, preferably in a controllable range of 15 ml / s to 30 ml / s.

[0054] The filter segment sealing connector 4 includes a filter segment clamping device 41 and a filter sealing structure 42;

[0055] The filter segment clamping device 41 clamps the side surfaces of both ends of the filter segment 1;

[0056] The filter sealing structure 42 forms a seal on the side surface of the filter segment 1 , but the ventilation hole 11 and the end surface of the filter segment 1 away from the tobacco segment 9 are not sealed.

[0057] The flow detection element 3 is a laminar flow meter with a detection range of 5 ml / s to 50 ml / s. Preferably, the flow controllable range is 15 ml / s to 30 ml / s.

[0058] The tobacco shred segment circumferential sealing device 5 also includes tobacco shred segment clamping devices 51 and tobacco shred sealing structural members 52 on the surfaces of both ends of the tobacco shred segment;

[0059] The tobacco segment clamping device 51 clamps the side surfaces of both ends of the tobacco segment 9;

[0060] The tobacco sealing structure 52 forms a seal on the side surface of the tobacco segment 9, but the end surface of the tobacco segment 9 away from the filter segment 1 is not sealed;

[0061] The filter segment sealing connector 4 is connected to the tobacco segment circumferential sealing device 5 so as to seal the end face of the tobacco segment 9 close to the filter segment 1 and the end face of the filter segment 1 close to the tobacco segment 9 .

[0062] The fixed or adjustable airflow resistance load device 8 has a fixed airflow load with an optional pressure difference range of 600Pa to 3000Pa at a flow rate of 17.5ml / s. Preferably, the pressure difference range is 800Pa to 1500Pa at 17.5ml / s.

[0063] A method for detecting the stability of processing quality of ventilation rate of cigarette filter tips, using the device for detecting the stability of processing quality of ventilation rate of cigarette filter tips, comprises the following steps:

[0064] S1, placing the tested cigarette into the cigarette filter ventilation rate processing quality stability detection device, and connecting various components;

[0065] S2, the circumferential sealing device 5 of the tobacco shreds is opened to form a circumferential seal on the tobacco shreds 9, and the air tightness of the connection of each component is detected at the same time, the suction device 6 and the flow detection element 3 are turned on, and the suction capacity of the suction device 6 is set. After the fluid flow process is stable, that is, after the data of the flow detection element 3 is stable, the data is read and recorded, and the suction device 6 and the flow detection element 3 are turned off to complete the experiment;

[0066] S3, replace the tested cigarette sample into the detection device, repeat the above operation process to the set number of times, calculate the average value and standard deviation of multiple repeated experiments, and this standard deviation can characterize the stability of the filter ventilation rate processing quality.

[0067] The filter segment sealing connector 4 has a filter segment end airflow channel 44 at one end away from the filter segment sealing connector 4. The cigarette filter ventilation rate processing quality stability detection device also includes a fixed or adjustable airflow resistance load device 8, and the fixed or adjustable airflow resistance load device 8 is connected to the filter segment end airflow channel 44 through the air path connector 7.

[0068] When the fixed or adjustable airflow resistance load device 8 is provided, in step S2, the circumferential sealing device 5 of the tobacco segment is opened to form a circumferential seal on the tobacco segment 9, and the airtightness of the connection between the components is detected at the same time. The suction device 6 and the flow detection element 3 are turned on, and the suction capacity of the suction device 6 and the load of the fixed or adjustable airflow resistance load device 8 are set. After the fluid flow process is stable, that is, the data of the flow detection element 3 is stable, the data is read and recorded, and the suction device 6 and the flow detection element 3 are closed to complete the experiment.

[0069] Example 1

[0070] Place the cigarette into the detection device and use Figure 1 The connection relationship is shown, and the components in the device are connected through the air path 7, and the circumferential sealing device 5 of the tobacco segment is opened to form a seal around the tobacco segment. At the same time, the air tightness of the connection of each component is detected, and the suction device 6 and the flow detection element 3 are turned on. The suction capacity is set to 17.5ml / s. After the fluid flow process is stable, that is, the data of the flow detection element 3 is stable, the data is read and recorded, and the suction device 6 and the flow detection element 3 are turned off to complete the experiment. Replace the tested cigarette sample to the detection device, repeat the operation process, and perform ten measurements in total, as shown in Table 1, and calculate the average value and standard deviation of the ten repeated experiments. This standard deviation can characterize the stability of the filter ventilation rate processing quality.

[0071] Table 1 Cigarette filter ventilation flow measurement results

[0072]

[0073] Example 2

[0074] Place the cigarette into the detection device and use Figure 2The connection relationship shown in the figure is shown. The components in the device are connected through the air path 7. The circumferential sealing device 5 of the tobacco segment is opened to form a seal around the tobacco segment. At the same time, the air tightness of the connection of each component is detected. The suction device 6 and the flow detection element 3 are turned on. The suction capacity is set to 17.5 ml / s and the load of the fixed or adjustable air flow resistance load device 8 is set to a pressure difference of 1200 Pa at 17.5 ml / s. After the fluid flow process is stable, that is, after the data of the flow detection element 3 is stable, the data is read and recorded, and the suction device 6 and the flow detection element 3 are turned off to complete the experiment. Replace the tested cigarette sample to the detection device, repeat the operation process, and perform ten measurements in total, as shown in Table 2, and calculate the average value and standard deviation of the ten repeated experiments. This standard deviation can characterize the stability of the filter ventilation rate processing quality.

[0075] Table 2 Cigarette filter ventilation flow measurement results (1200Pa airflow resistance load)

[0076]

Claims

1. A device for detecting the stability of cigarette filter ventilation rate processing quality, characterized in that: It includes a quantitative suction unit, a cigarette sealing unit, and a flow detection unit; The tested cigarette comprises a filter segment (1) and a tobacco segment (9), wherein the filter segment (1) has a ventilation hole (11); The quantitative suction unit is located at the far filter end of the tested cigarette, and comprises a flow control component (2) and a suction device (6). The flow control component (2) is connected to the suction device (6) via an air path connector (7). The flow control component (2) can perform flow control, and the suction device (6) realizes fluid flow by suction. The cigarette sealing unit comprises a tobacco segment circumferential sealing device (5) and a filter segment sealing connector (4); the tobacco segment circumferential sealing device (5) is located at the periphery of the tobacco segment (9); the tobacco segment circumferential sealing device (5) has a tobacco segment end airflow channel (53) at one end away from the filter segment sealing connector (4); the tobacco segment end airflow channel (53) is connected to the flow control component (2) via the air path connector (7); the filter segment sealing connector (4) is located at the periphery of the filter segment (1); the filter segment sealing connector (4) has an air vent airflow channel (43) corresponding to the ventilation hole (11); The flow detection unit comprises a flow detection element (3), wherein the flow detection element (3) is connected to the vent air flow channel (43) via the air path connector (7), and the flow detection element (3) is in communication with the ventilation hole (11) via the air path connector (7) and the vent air flow channel (43).

2. The device for detecting the stability of cigarette filter ventilation rate processing quality according to claim 1, characterized in that: The filter segment sealing connector (4) has a filter segment end airflow channel (44) at one end away from the filter segment sealing connector (4).

3. The device for detecting the stability of cigarette filter ventilation rate processing quality according to claim 2, characterized in that: The device for detecting the stability of processing quality of ventilation rate of cigarette filters also includes a fixed or adjustable airflow resistance load device (8), and the fixed or adjustable airflow resistance load device (8) is connected to the airflow channel (44) at the end of the filter segment via the air path connector (7).

4. The device for detecting the stability of cigarette filter ventilation rate processing quality according to claim 1, characterized in that: The tested cigarette is a cigarette with a ventilation design, and the filter ventilation rate in conventional testing ranges from 5% to 90%. The ventilation holes (11) are formed by online or offline punching.

5. The device for detecting the stability of cigarette filter ventilation rate processing quality according to claim 1, characterized in that: The flow control component (2) controls the suction flow in a controllable range of 5 ml / s to 50 ml / s.

6. The device for detecting the stability of cigarette filter ventilation rate processing quality according to claim 1, characterized in that: The filter segment sealing connector (4) comprises a filter segment clamping device (41) and a filter sealing structural member (42); The filter segment clamping device (41) clamps the side surfaces of both ends of the filter segment (1); The filter sealing structure (42) forms a seal on the side surface of the filter segment (1), but the ventilation hole (11) and the end surface of the filter segment (1) away from the tobacco segment (9) are not sealed.

7. The device for detecting the stability of cigarette filter ventilation rate processing quality according to claim 1, characterized in that: The flow detection element (3) is a laminar flow meter with a detection range of 5 ml / s to 50 ml / s.

8. The device for detecting the stability of cigarette filter ventilation rate processing quality according to claim 1, characterized in that: The tobacco shred segment circumferential sealing device (5) further comprises tobacco shred segment clamping devices (51) on the surfaces of both ends of the tobacco shred segment and a tobacco shred sealing structural member (52); The tobacco shred segment clamping device (51) clamps the side surfaces of both ends of the tobacco shred segment (9); The tobacco sealing structure (52) forms a seal on the side surface of the tobacco segment (9), but the end surface of the tobacco segment (9) away from the filter segment (1) is not sealed; The filter segment sealing connector 4 is connected to the tobacco segment circumferential sealing device (5) so as to seal the end face of the tobacco segment (9) close to one end of the filter segment (1) and the end face of the filter segment (1) close to one end of the tobacco segment (9).

9. The device for detecting the stability of cigarette filter ventilation rate processing quality according to claim 2, characterized in that: The fixed or adjustable airflow resistance load device (8) has a fixed airflow load with an optional flow rate of 17.5 ml / s and a pressure difference range of 600 Pa to 3000 Pa.

10. A method for detecting the stability of cigarette filter ventilation rate processing quality, characterized in that: The device for detecting the stability of cigarette filter ventilation rate processing quality according to any one of claims 1 to 9 comprises the following steps: S1, placing the tested cigarette into the cigarette filter ventilation rate processing quality stability detection device, and connecting various components; S2, the circumferential sealing device (5) of the tobacco shreds is opened to form a circumferential seal on the tobacco shreds (9), and the airtightness of the connection of each component is detected at the same time, the suction device (6) and the flow detection element (3) are opened, and the suction capacity of the suction device (6) is set. After the fluid flow process is stable, that is, after the data of the flow detection element (3) is stable, the data is read and recorded, and the suction device (6) and the flow detection element (3) are closed to complete the experiment; S3, replace the tested cigarette sample into the detection device, repeat the above operation process to the set number of times, calculate the average value and standard deviation of multiple repeated experiments, and this standard deviation can characterize the stability of the filter ventilation rate processing quality.

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