Visual detection device for air permeability of pre-punched cigarette tipping paper

Abstract

The utility model discloses a visual detection device for the air permeability of pre-punched cigarette tipping paper, which comprises a closed transparent box, a sol air inlet at one end of the transparent box is connected to an atomizer through an aerosol air inlet pipe, atomized liquid is contained in the atomizer, a cigarette holder is arranged at the other end of the transparent box, and the cigarette holder is connected with the cigarette holder. The clamping end of the cigarette holder is located in the transparent box and used for clamping cigarettes, the tail end of the cigarette holder is connected with the vacuum air inlet pipe, the vacuum air inlet pipe extends out of the transparent box and is connected with a vacuum opening of the negative pressure generator, and an air inlet of the negative pressure generator is connected with the compressed air inlet pipe through the air valve. And an exhaust port of the negative pressure generator is connected with a mixed gas exhaust pipe. Compared with the prior art, the cigarette tipping paper air permeability detection device has the following advantages that the air flow pattern of aerosol flowing through the ventilation area of the cigarette tipping paper in the detection process is visualized, so that the direct reason for the change of the air permeability of the cigarette tipping paper can be accurately identified and judged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a detection device and method for cigarette production, especially relates to a visual detection device for the air permeability of pre-perforated cigarette tipping paper. BACKGROUND

[0002] With the advancement of the work of reducing tar and harm of cigarettes, the filter ventilation dilution technology is widely used because of its simplicity, reliability and significant effect of reducing tar. However, the fluctuation of ventilation dilution will have a significant impact on the release amount of tar, nicotine, carbon monoxide and sensory quality of cigarettes, therefore, the precise control of the ventilation rate of the filter section of cigarettes is crucial. As an important component material of the filter section of cigarettes, the air permeability of tipping paper is one of the key factors for regulating the ventilation rate of cigarettes. The air permeability of pre-perforated tipping paper determines the smoothness of air flow, which further affects the ventilation rate of cigarettes.

[0003] Pre-perforated tipping paper, as the name implies, refers to tipping paper with micro-holes pre-perforated as ventilation holes, which can form a ventilation channel and achieve the purpose of diluting smoke. The ventilation rate of pre-perforated cigarettes is mainly affected by the air permeability of tipping paper, which is easily affected by the sizing effect during the tipping process. In the actual tipping process, if the control of the glue-free area of pre-perforated tipping paper is poor, the sizing area deviates or overflow occurs, which may cause the air permeability of the ventilation area of tipping paper to decrease, thereby affecting the quality of cigarette products. In addition, if the glue of the overlapping area of tipping paper is not firm, there will be a small amount of air leakage, which macroscopically shows that the air permeability of tipping paper increases, which will also affect the sensory quality during the smoking process.

[0004] Currently, for sizing effect, colorants can be used to color the filter section of cigarettes to evaluate the control effect of the glue-free area of pre-perforated tipping paper. However, this method cannot judge the influence of sizing effect on the ventilation effect of ventilation holes on pre-perforated tipping paper. If the glue control roller controls the glue unevenly, a small amount of glue film may block some ventilation holes, but the colorant cannot effectively identify it. At this time, the use of colorants cannot determine the direct cause of the decrease in the air permeability of tipping paper. In addition, the influence of the tipping process on the air permeability of tipping paper can be indirectly judged by the national standard cigarette ventilation rate detection of cigarettes, but only the decrease or increase of air permeability can be determined, and the direct cause of the change of air permeability cannot be determined. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects of the prior art, providing a visual detection device for the air permeability of pre-perforated cigarette tipping paper, which can accurately identify and determine the direct cause of the change of the air permeability of cigarette tipping paper, thereby providing technical support for optimizing and improving the processing technology of the tipping process of cigarettes.

[0006] The utility model is realized by the following technical solutions:

[0007] The application discloses a visual detection device for air permeability of pre-perforated cigarette tipping paper, which comprises a sealed transparent box, an aerosol inlet opening is formed at one end of the transparent box, the aerosol inlet opening of the transparent box is connected to an atomizer through an aerosol inlet pipe, the atomizer is filled with atomizing liquid, a cigarette holder is arranged at the other end of the transparent box, a clamping end of the cigarette holder is arranged in the transparent box, the clamping end of the cigarette holder is used for clamping a cigarette, a vacuum inlet pipe is connected to the end of the cigarette holder, the vacuum inlet pipe extends out of the transparent box and is connected to a vacuum port of a negative pressure generator, an air inlet of the negative pressure generator is connected to a compressed air inlet pipe through a gas valve, and an exhaust port of the negative pressure generator is connected to a mixed gas exhaust pipe.

[0008] As a preferred scheme of the visual detection device for air permeability of pre-perforated cigarette tipping paper, a gas flow detector is arranged on the vacuum inlet pipe.

[0009] As a preferred scheme of the visual detection device for air permeability of pre-perforated cigarette tipping paper, the aerosol inlet opening of the transparent box and the cigarette holder are arranged in a left-right opposite mode in the transparent box.

[0010] As a preferred scheme of the visual detection device for air permeability of pre-perforated cigarette tipping paper, the transparent box comprises a box body and a box cover arranged on the top of the box body.

[0011] As a preferred scheme of the visual detection device for air permeability of pre-perforated cigarette tipping paper, the particle diameter of the aerosol formed by the atomizer is between 0.01 microns and 10 microns.

[0012] The application further discloses a visual detection method for air permeability of pre-perforated cigarette tipping paper, which is based on the detection device and comprises the following steps.

[0013] In step one, the filter end of the cigarette is clamped on the clamping end of the cigarette holder, and the ventilation area of the tipping paper of the filter section of the cigarette is completely exposed in the inner cavity of the transparent box, and the number of ventilation holes in the ventilation area of the tipping paper of the filter section of the cigarette is N0.

[0014] In step two, the atomizer and the negative pressure generator are started, the gas valve is opened, the vacuum port of the negative pressure generator forms a vacuum negative pressure, and the gas in the inner cavity of the transparent box is sucked through the vacuum inlet pipe; meanwhile, the atomizing liquid in the atomizer is atomized to form aerosol, under the action of the negative pressure suction, the aerosol enters the inner cavity of the transparent box through the aerosol inlet pipe, enters the vacuum inlet pipe through the ventilation area of the filter section and the ventilation area of the filter section of the cigarette clamped on the cigarette holder, enters the negative pressure generator through the vacuum inlet pipe, and is discharged through the mixed gas exhaust pipe after being mixed with the compressed air.

[0015] Step three, observe the aerosol flow state in the transparent box cavity, when the aerosol in the transparent box cavity is observed to continuously pass through the ventilation hole of the ventilation area of the filter segment of the cigarette, the number of flow paths of the aerosol flow through the ventilation hole of the ventilation area of the filter segment of the cigarette is counted, and is recorded as N;

[0016] Step four, calculate the characterization index A of the filter segment tipping paper air permeability of the cigarette by the following formula (1):

[0017]

[0018] Step five, judging the tipping paper air permeability of the cigarette according to the calculated characterization index A, the judging process is as follows:

[0019] When A = 1, and it is observed that the aerosol only enters the inside of the filter segment through the ventilation hole of the tipping paper, it is determined that the tipping paper air permeability of the cigarette is normal;

[0020] When A < 1, and it is observed that part of the ventilation hole of the tipping paper has no aerosol flowing into the inside of the filter segment, it is determined that the tipping paper air permeability of the cigarette is abnormal;

[0021] When A > 1, and it is observed that the aerosol flows into the inside of the cigarette through the tipping paper overlap or the tipping paper and the cigarette paper joint, it is determined that the tipping paper air permeability of the cigarette is abnormal.

[0022] Compared with the prior art, the utility model has the following advantages:

[0023] The visual detection device for the pre-punching cigarette tipping paper air permeability provided by the utility model utilizes the light scattering effect of the aerosol, releases visible aerosol, intuitively displays the spatial distribution and flow direction of the gas flow, visualizes the airflow flow pattern of the aerosol flowing through the ventilation area of the tipping paper of the cigarette in the detection process, provides more direct evidence for evaluating the air permeability of the finished cigarette tipping paper. In addition, the utility model adopts a quantitative method to characterize the tipping effect of the pre-punching finished cigarette tipping paper, and according to the characterization index, the direct cause of the change of the air permeability of the pre-punching finished cigarette tipping paper can be effectively identified, thereby providing technical support for optimizing and improving the cigarette tipping process. In addition, the device of the utility model has the advantages of convenient operation and accurate results. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is a structural schematic view of the detection device of the utility model.

[0025] Fig. 2 It is a structural schematic view of another view of the detection device of the utility model.

[0026] Fig. 3 It is a flat picture of the tipping paper after being unfolded.

[0027] The figure mark: 1 transparent box, 2 box body, 3 box cover, 4 aerosol inlet pipe, 5 atomizer, 6 cigarette holder, 7 cigarette, 8 vacuum inlet pipe, 9 gas flow detector, 10 negative pressure generator, 11 vacuum port, 12 air inlet, 13 air valve, 14 compressed air inlet pipe, 15 exhaust port, 16 mixed gas exhaust pipe, 17 tipping paper, 18 ventilation area, 19 ventilation hole. DETAILED DESCRIPTION

[0028] The embodiment of the utility model is described in detail below, and the embodiment is implemented on the premise of the technical scheme of the utility model, detailed implementation modes and specific operation processes are given, but the protection scope of the utility model is not limited to the following embodiment.

[0029] Referring to Figs. 1 to 3 The embodiment discloses a visual detection device for the air permeability of pre-perforated cigarette tipping paper, which comprises a sealed transparent box 1. The transparent box 1 can be made of acrylic. The transparent box 1 comprises a box body 2 and a box cover 3 which is arranged on the top of the box body 2 and can be opened and closed. An aerosol inlet port is formed at one end of the transparent box 1. The aerosol inlet port of the transparent box 1 is connected to an atomizer 5 through an aerosol inlet pipe 4. The atomizer 5 contains atomizing liquid. A cigarette holder 6 is arranged at the other end of the transparent box 1. The aerosol inlet port of the transparent box 1 and the cigarette holder 6 are arranged opposite to each other in the transparent box 1. The holding end of the cigarette holder 6 is located inside the transparent box 1. The holding end of the cigarette holder 6 is used for holding a cigarette 7. The end of the cigarette holder 6 is connected to a vacuum inlet pipe 8. A gas flow detector 9 is arranged on the vacuum inlet pipe 8, which can detect the gas flow in the vacuum inlet pipe 8 in real time. The vacuum inlet pipe 8 extends out of the transparent box 1 and is connected to a vacuum port 11 of a negative pressure generator 10. An air inlet 12 of the negative pressure generator 10 is connected to a compressed air inlet pipe 14 through an air valve 13. The compressed air inlet pipe 14 is connected to a compressed air source. An exhaust port 15 of the negative pressure generator 10 is connected to a mixed gas exhaust pipe 16. The air valve 13 can be a ball valve. The opening degree of the air valve 13 can be controlled to control the flow of compressed air in the compressed air inlet pipe 14.

[0030] The atomizing liquid can be propylene glycol or glycerol liquid. The liquid particles formed by atomizing the atomizing liquid through the atomizer 5 are suspended in the air medium to form aerosol. The particle diameter of the aerosol is between 0.01 μm and 10 μm. The light scattering effect of the aerosol makes the aerosol visible white. When the visible aerosol flows with the air flow, the flow path of the aerosol can be identified and counted by the naked eye of the human body.

[0031] The embodiment also discloses a visual detection method for the air permeability of pre-perforated cigarette tipping paper. The detection method is based on the detection device described above. The detection method is performed in the following steps:

[0032] Step one, the filter segment end of the cigarette 7 is clamped in the clamping end of the cigarette holder 6, and the ventilation area 18 of the filter segment tipping paper 17 of the cigarette 7 is completely exposed in the inner cavity of the transparent box 1, and the tobacco column segment of the cigarette 7 is suspended in the inner cavity of the transparent box 1, and the number of ventilation holes 19 in the ventilation area 18 of the filter segment tipping paper 17 of the cigarette 7 is N0;

[0033] Step two, start the atomizer 5 and the negative pressure generator 10, open the gas valve 13, and the vacuum port 11 of the negative pressure generator 10 forms a vacuum negative pressure, and the gas in the inner cavity of the transparent box 1 is sucked through the vacuum air inlet pipe 8; at the same time, the atomized liquid in the atomizer 5 is atomized to form an aerosol, which enters the inner cavity of the transparent box 1 under the action of negative pressure suction, and enters the vacuum air inlet pipe 8 through the tobacco column segment of the cigarette 7 clamped on the cigarette holder 6 and the ventilation area 18 of the filter segment, and then enters the negative pressure generator 10 through the vacuum air inlet pipe 8, and is mixed with compressed air and then discharged through the mixed gas exhaust pipe 16;

[0034] Step three, observe the flow state of the aerosol in the inner cavity of the transparent box 1, and when it is observed that the aerosol in the inner cavity of the transparent box 1 continuously passes through the ventilation holes 19 of the ventilation area 18 of the filter segment of the cigarette 7, count the number of flow paths of the aerosol flow through the ventilation holes 19 of the ventilation area 18 of the filter segment of the cigarette 7, and record it as N.

[0035] Step four, calculate the representation index A of the permeability of the filter segment tipping paper 17 of the cigarette 7 by the following formula (1):

[0036]

[0037] Step five, determine the permeability of the cigarette tipping paper according to the calculated representation index A, and the determination process is as follows:

[0038] When A = 1, and it is observed that the aerosol only enters the inside of the filter segment through the ventilation holes 19 of the tipping paper 17, it is determined that the permeability of the cigarette tipping paper is normal; it is indicated that the cigarette tipping process is accurately controlled without glue overflow and hole blockage, and the tipping paper 17 is firmly glued in each region;

[0039] When A < 1, and it is observed that part of the ventilation holes 19 of the tipping paper 17 has no aerosol flowing into the inside of the filter segment, it is determined that the permeability of the cigarette tipping paper is abnormal; it is indicated that part of the ventilation holes 19 in the ventilation area 18 of the tipping paper 17 is blocked and cannot play a ventilation role; the smaller the A value is, the more the number of blocked ventilation holes 19 of the tipping paper 17 is, and the smaller the permeability of the cigarette tipping paper 17 is;

[0040] When A > 1, and aerosol is observed to flow into the inside of the cigarette 7 through the joint of the tipping paper 17 or the joint of the tipping paper 17 and the cigarette paper, it is determined that the air permeability of the cigarette tipping paper is abnormal; it indicates that the tipping paper 17 is not firmly adhered in some areas during the adhesion process, and there is a small amount of air leakage phenomenon, which is macroscopically manifested as the air permeability of the tipping paper 17 rising; the larger the value of A, the more areas of the tipping paper 17 are not firmly adhered, and the air permeability of the cigarette tipping paper 17 is macroscopically greater.

[0041] The applicant uses the above detection device to detect experimental cigarettes 7 of the same specification with a circumference of 24.4 mm. The tipping paper 17 wrapped around the filter segment of the cigarette 7 is a rectangle after being unfolded, and the overall length of the unfolded tipping paper 17 is 30 mm and the width is 27 mm. The middle rectangular glue-free area is the ventilation area 18, and the length of the glue-free ventilation area 18 is 22 mm and the width is 8 mm. The tipping paper 17 is provided with double rows of ventilation holes 19 in the ventilation area 18, and the total number of ventilation holes 19 in the double rows of ventilation holes 19 is NO = 20. During the detection process, the opening of the air valve 13 is adjusted to control the gas flow in the vacuum air inlet pipe 8 of the negative pressure generator 10 at 17.5 mL / s, which is consistent with the airflow rate in the ventilation rate detection of the cigarette national standard, to ensure the comparability of the data.

[0042] Example 1

[0043] One of the experimental cigarettes 7 is selected, and the experimental cigarette 7 is detected according to the above detection method. The number N of flow paths of aerosol flowing through the ventilation holes 19 of the ventilation area 18 of the filter segment of the cigarette 7 is 20, and the representation index A of the air permeability of the tipping paper 17 of the filter segment of the cigarette 7 is calculated according to formula (1) to be A = 1. Aerosol is observed to flow into the inside of the filter segment only through the ventilation holes 19 of the tipping paper 17, which can be used to determine that the air permeability of the pre-punched cigarette tipping paper 17 is normal, indicating that the glue-free area control during the cigarette tipping process is accurate, there is no glue overflow and hole blocking, and the tipping paper 17 is firmly adhered in each area.

[0044] Example 2

[0045] The second experimental cigarette 7 is selected, and the experimental cigarette 7 is detected according to the above detection method. The number N of flow paths of aerosol flowing through the ventilation holes 19 of the ventilation area 18 of the filter segment of the cigarette 7 is 18, and the representation index A of the air permeability of the tipping paper 17 of the filter segment of the cigarette 7 is calculated according to formula (1) to be A = 0.9, i.e. A < 1. It is observed that some of the ventilation holes 19 of the tipping paper 17 do not have aerosol flowing into the inside of the filter segment, which can be used to determine that the air permeability of the cigarette tipping paper is abnormal, some of the ventilation holes 19 are blocked and cannot play a role in ventilation and dilution, which will affect the tar content, nicotine, carbon monoxide release amount and sensory quality of the cigarette.

[0046] Example 3

[0047] The third experimental cigarette 7 is selected, and the experimental cigarette 7 is detected according to the above detection method, the number N of flow paths of aerosol flowing through the ventilation hole 19 of the ventilation area 18 of the filter segment of the cigarette 7 is 22, and the representation index A of the permeability of the tipping paper 17 of the filter segment of the cigarette 7 is calculated according to formula (1) to be 1.1, that is, A>1, and it is observed that the aerosol flows into the inside of the cigarette 7 through the overlap of the tipping paper 17 or the joint of the tipping paper 17 and the cigarette paper, and it can be judged that the permeability of the tipping paper of the cigarette is abnormal, the partial area of the overlap of the tipping paper 17 is not firmly pasted, and there is a small amount of air leakage phenomenon; it is illustrated that in the process of jointing the cigarette, the glue amount of the partial glue coating area of the tipping paper 17 is small, and the pasting effect of the tipping paper 17 is poor.

[0048] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for visual detection of the air permeability of pre-perforated cigarette tipping paper, characterized in that: The application relates to a transparent box for smoking, which comprises an airtight transparent box, an aerosol inlet opening at one end of the transparent box, an aerosol inlet pipe connecting the aerosol inlet opening of the transparent box to an atomizer, the atomizer containing atomized liquid, a cigarette holder at the other end of the transparent box, the holding end of the cigarette holder being located inside the transparent box, the holding end of the cigarette holder being used for holding a cigarette, a vacuum inlet pipe connected to the end of the cigarette holder, the vacuum inlet pipe extending out of the transparent box and being connected to a vacuum port of a negative pressure generator, an air inlet port of the negative pressure generator being connected to a compressed air inlet pipe through an air valve, and an exhaust port of the negative pressure generator being connected to a mixed gas exhaust pipe.

2. The pre-perforated cigarette tipping paper air permeability visual detection device of claim 1, wherein: A gas flow detection meter is arranged on the vacuum inlet pipe.

3. The pre-perforated cigarette tipping paper air permeability visual detection device of claim 1, wherein: The aerosol inlet opening of the transparent box and the cigarette holder are arranged in left and right opposition in the transparent box.

4. The pre-perforated cigarette tipping paper air permeability visual inspection apparatus of claim 1, wherein: The transparent box comprises a box body and a box cover arranged on the top of the box body.

5. The pre-perforated cigarette tipping paper air permeability visual detection device of claim 1, wherein: The particle diameter of the aerosol formed by the atomizer is between 0.01 mu m and 10 mu m.

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