Auxiliary device for detecting dynamic suction resistance of cigarette

Abstract

The utility model relates to the technical field of cigarette manufacturing, in particular to an auxiliary device for cigarette dynamic draw resistance detection, which comprises a pressurizing ball, a gas guide tube and a latex tube, the pressurizing ball is connected with one end of the gas guide tube through a joint, the other end of the gas guide tube is connected with the latex tube through a joint, and the latex tube is hollow and cylindrical and is provided with an inner tube layer and an outer tube layer. An inflation cavity is formed between the inner pipe layer and the outer pipe layer. The pressurizing ball, the connector, the pressure release valve, the air guide pipe, the latex tube and other components work cooperatively, the pressurizing ball serves as a power source, pressure is accurately applied to the latex tube according to needs, it is ensured that the latex tube tightly wraps a cigarette, and a filter tip air inlet channel and a cigarette strip air inlet channel are thoroughly blocked; detection data become accurate and reliable under the assistance of the device, and each detail about the influence of filter tip air intake, cigarette bar air intake and combustion cone air intake on dynamic draw resistance can be clearly captured and accurately quantified, so that a rigid rock technical support is provided for quality control of current cigarette products.

Description

Technical Field

[0001] This utility model relates to the field of cigarette manufacturing technology, specifically to an auxiliary device for detecting the dynamic draw resistance of cigarettes. Background Technology

[0002] In the field of tobacco testing technology, the accurate measurement of dynamic draw resistance of cigarettes plays a crucial role in controlling cigarette quality. The airflow path during cigarette smoking is complex and diverse, mainly encompassing three key paths: filter intake, tobacco stick intake, and combustion cone intake.

[0003] With continuous innovation in tobacco technology, advanced technologies such as perforated tipping paper, cigarette paper with different air permeability, and different types of combustion improvers have been widely adopted to meet the needs of different consumers and comply with increasingly stringent industry standards. Perforated tipping paper can change the air intake volume and method at the filter tip, allowing air to enter through small holes on the side of the filter tip, thereby adjusting the taste and smoke concentration during smoking. Cigarette paper with different air permeability directly affects the rate and flow of air entering the cigarette pack. High air permeability makes it easier for outside air to enter the inside of the cigarette pack to participate in combustion and dilute the smoke, while low air permeability will change the smoke generation characteristics. Different types of combustion improvers act on the combustion cone, affecting the combustion speed, temperature, and oxygen intake, thus significantly impacting the air intake of the combustion cone.

[0004] However, current tobacco testing technology faces a dilemma: the industry lacks effective testing techniques to "evaluate the impact of cigarette smoke airflow path on dynamic draw resistance." This makes it difficult to accurately determine the role of each airflow path in dynamic draw resistance changes when developing new cigarette products, optimizing existing cigarette processes, or conducting in-depth quality control, hindering targeted adjustments and improvements.

[0005] To address the problems existing in current technologies, there is an urgent need to develop an auxiliary device for detecting the dynamic draw resistance of cigarettes. This would improve the accuracy of evaluating how air intake from the filter tip, the cigarette pack, and the combustion cone affects the dynamic draw resistance of cigarettes, thus opening up new paths for technological iteration and quality advancement in the tobacco industry. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an auxiliary device for detecting the dynamic draw resistance of cigarettes. Through the coordinated operation of components such as a pressure ball, connector, pressure relief valve, air guide tube, and latex tube, the pressure ball acts as a power source, precisely applying pressure to the latex tube as needed to ensure it tightly wraps around the cigarette, completely blocking the air intake channels of the filter and the cigarette stick. With the assistance of this device, the detection data becomes accurate and reliable. Every detail regarding the impact of filter intake, cigarette stick intake, and combustion cone intake on dynamic draw resistance can be clearly captured and precisely quantified, providing solid technical support for the quality control of current cigarette products.

[0007] Specifically, this utility model provides an auxiliary device for dynamic draw resistance detection of cigarettes, comprising: a pressure bulb, a gas guide tube, and a latex tube; the pressure bulb is connected to one end of the gas guide tube via a connector for pressurizing and inputting gas into the latex tube; the other end of the gas guide tube is connected to the latex tube via a connector for delivering gas into the latex tube; the latex tube is configured as a hollow cylinder for fitting the cigarette to be tested; the latex tube has an inner tube layer and an outer tube layer, with an air-filled chamber formed between the inner and outer tube layers, and the pressure bulb pressurizes the latex tube to ensure a tight fit between the latex tube and the cigarette.

[0008] Furthermore, the connector includes: a first connector and a second connector;

[0009] The first and second connectors are respectively provided with threaded conical openings at both ends;

[0010] The first connector is connected to the pressure ball and the air guide tube through a threaded conical opening;

[0011] The second connector connects to the air duct and the latex tube via a threaded conical opening.

[0012] Furthermore, the first connector is equipped with a pressure relief valve for venting and depressurizing the air chamber inside the latex tube.

[0013] Furthermore, the top of the pressurizing ball is provided with a pressurizing ball air inlet, which is configured to allow air to flow into the inner liner in one direction, forming a seal and preventing the gas from flowing in the opposite direction;

[0014] Furthermore, the bottom of the pressure ball is provided with a pressure ball connection port, and the pressure ball connection port is provided with an internal thread that matches the threaded conical opening of the first connector, so that the internal thread of the pressure ball connection port is sealed and connected to the threaded conical opening.

[0015] Furthermore, the two ends of the air guide tube are provided with internal threads that match the threaded conical openings of the first and second connectors, so that they are connected by threaded sealing.

[0016] Furthermore, a rotary valve is installed on the latex tube to block the air from flowing out of the inflation chamber of the latex tube after the pressure ball and air guide tube are removed during testing.

[0017] Furthermore, the latex tube is provided with an internal thread that matches the threaded conical opening of the second connector, so that it can be connected by a threaded seal.

[0018] Furthermore, the diameter of the latex tube is set to match the diameter of the cigarette to be tested; the length of the latex tube is set according to the length of the sealing section required by the cigarette to be tested, so as to ensure that its length can meet the actual needs of the sealing section.

[0019] Working principle: Before the dynamic draw resistance detection process of cigarettes is started, a suitable latex tube 7 is selected according to the specific specifications of the cigarette to be tested, such as its diameter and length. The latex tube 7 has a double-layer structure of inner tube layer 71 and outer tube layer 72, which form an air-filling chamber 73. After assembling each component in sequence, a comprehensive inspection is carried out on the connection status of components such as pressure ball 1, first connector 4, second connector 5, pressure relief valve 2, air guide tube 3, and latex tube 7. At the same time, the rotary valve 6 on the latex tube 7 is opened to ensure that all aspects of gas delivery and control are stable and unobstructed.

[0020] The part of the cigarette to be tested that needs to be sealed is inserted into the latex tube 7, and the operator manually presses the pressure ball 1. The air inlet 11 at the top of the pressure ball 1 allows air to flow into the inner liner in one direction, effectively blocking the reverse flow of gas and ensuring a stable and unidirectional inflation process. The operator repeatedly squeezes the pressure ball 1, and the gas inside the ball, under pressure, flows smoothly into the air guide tube 3 through the passage constructed by the tight seal between the pressure ball connection port 12 at the bottom of the pressure ball 1 and the threaded conical port 13 of the first connector 4. The gas is then transported to the inflation chamber 73 of the latex tube 7 through the air guide tube 3. As gas continues to flow in, the air pressure in the inflation chamber 73 steadily increases, and the latex tube 7 begins to deform adaptively. The outer tube layer 72 contracts inward under the pressure, tightly fitting against the surface of the cigarette, blocking the air intake channel of the part of the cigarette to be tested that needs to be sealed. This forces the airflow to enter only the unsealed part and the combustion cone when the cigarette is smoked.

[0021] When the operator notices that the pressure in the air chamber 73 inside the latex tube 7 exceeds the appropriate range, in order to prevent the cigarette from deforming, the pressure relief valve 2 can be opened to release the excess gas through the pressure relief valve 2, so that the air pressure returns to the reasonable range and ensures that the cigarette is always in a stable and non-destructive testing state.

[0022] After confirming the sealing of the cigarette to be tested, turn the rotary valve 6 to close, blocking the gas flow between the latex tube 7 and the transmission channel. Turn the second connector 5 to detach the latex tube 7 and the air guide tube 3. The gas chamber 73 of the detached latex tube 7 still maintains a sealed air pressure state that is compatible with the testing process. Next, the operator inserts the cigarette with the latex tube 7 into the labyrinth ring of the detector and starts the test.

[0023] After the test, remove the latex tube 7 from the testing instrument, turn the rotary valve 6 to open it, and quickly expel the gas from the inflation chamber 73. The instantaneous pressure drop loosens the outer tube layer 72 of the latex tube 7, making it easier to smoothly pull the smoked cigarette out of the latex tube 7, thus completing the test. After the test, collect and dispose of the used latex tube 7 according to regulations, wipe all parts clean, and store them in their proper place for future use.

[0024] Beneficial effects:

[0025] 1. This utility model, through the pressure ball, can continuously provide stable and precise gas pressure to the latex tube according to the testing requirements, so as to achieve a tight and seamless wrapping between the latex tube and the cigarette, completely blocking the air intake channels of the filter tip and the cigarette stick. This ensures that the air intake of each part of the cigarette is not affected by external factors during the testing process, so that every minute change in air intake data can accurately reflect the true state of the cigarette. This lays a solid foundation for subsequent precise quantification of the impact of air intake of the filter tip, the cigarette stick, and the combustion cone on dynamic draw resistance, and greatly improves the reliability of cigarette product quality control.

[0026] 2. The diameter of the latex tube in this utility model is set to match the diameter of the cigarette to be tested. This allows the latex tube to fit tightly against the surface of the cigarette and accurately wrap the cigarette, ensuring the airtightness of the testing environment and thus making the test results more accurate.

[0027] 3. This utility model establishes a flexible pressure control system through the pressure ball and the pressure relief valve on the first connector. Before testing, the pressure ball can inflate the latex tube to the ideal pressure state; after testing, the pressure relief valve can quickly vent and depressurize the inflation chamber inside the latex tube, facilitating quick replacement of the cigarette for the next round of testing, making the entire testing process smooth and efficient.

[0028] 4. The combination of the latex tube and the rotary valve in this utility model ensures that even if the pressure ball and air guide tube are removed, the rotary valve can still prevent the air in the latex tube's inflation chamber from flowing out, maintaining the internal air pressure environment during testing. All components work together to ensure the smooth progress of the dynamic draw resistance test of cigarettes.

[0029] 5. The length of the latex tube in this utility model is set according to the length of the section of the cigarette to be tested that needs to be sealed, so as to flexibly and appropriately wrap the part of the cigarette that needs to be sealed.

[0030] 6. The latex material of this utility model has good elasticity, allowing the latex tube to adapt to minor changes in the shape of the cigarette to a certain extent during installation and use. For example, when the cigarette is slightly deformed due to handling or storage conditions, the latex tube can still fit the cigarette well and maintain a seal. Moreover, the latex material is generally soft and will not damage the surface of the cigarette, which is very important for ensuring the integrity of the cigarette, especially when subsequent testing or processing is required. Attached Figure Description

[0031] Figure 1 This is an exploded view of the device of this utility model;

[0032] Figure 2 A schematic diagram of the pressurization process of the device of this utility model;

[0033] Figure 3 This is a schematic diagram of the working state of the device of this utility model;

[0034] Figure 4 This is a schematic diagram of the latex tube wrapping the filter tip section of the device of this utility model;

[0035] Figure 5 This is a schematic diagram of the latex tube wrapping the filter tip section and the tobacco section of the present invention.

[0036] Figure 6 This is a schematic diagram of the latex tube wrapping the tobacco shreds in the device of this utility model;

[0037] Figure 7 This is a side view of the latex tube in the device after being pressurized and in contact with a cigarette.

[0038] Figure 8 This is a side view of the latex tube inflation chamber of the present invention without pressurization and connected to the cigarette holder;

[0039] Figure 9 Enlarged views of the latex tube inflation chamber of this utility model under pressurization and without pressurization;

[0040] Figure 10 This is a schematic diagram of the cigarette air intake of the device of this utility model;

[0041] Figure 11 This is a schematic diagram of the device and cigarette of this utility model;

[0042] Figure 12 This is a schematic diagram showing the separation of the latex tube and the second connector in the device of this utility model;

[0043] The diagram is labeled as follows: 1—Pressure ball, 11—Pressure ball air inlet, 12—Pressure ball connection port;

[0044] 2—Pressure relief valve, 3—Air guide pipe, 4—First connector, 5—Second connector, 6—Rotary valve, 9—Detection instrument, 10—Detection instrument labyrinth ring, 13—Threaded conical opening;

[0045] 7—Latex tubing, 71—Inner tubing layer, 72—Outer tubing layer, 73—Inflatable chamber;

[0046] 8—Cigarette stick, 81—Tobacco shreds, 82—Filter tip; Detailed Implementation

[0047] The technical solution will now be described in detail with reference to the accompanying drawings of the embodiments of this utility model.

[0048] Example 1

[0049] like Figure 1 , 2As shown, an auxiliary device for detecting the dynamic resistance of a cigarette includes: a pressure ball 1, a pressure ball air inlet 11, a pressure ball connection port 12, a pressure relief valve 2, an air guide tube 3, a first connector 4, a second connector 5, a rotary valve 6, a latex tube 7, an inner tube layer 71, an outer tube layer 72, an air filling chamber 73, and a threaded conical opening 13.

[0050] The pressure bulb 1 is connected to one end of the gas delivery tube 3 via a connector to pressurize and input gas into the latex tube 7; the other end of the gas delivery tube 3 is connected to the latex tube 7 via a connector to deliver gas into the latex tube 7; the latex tube 7 is designed as a hollow cylinder to be fitted with the cigarette stick 8 to be tested.

[0051] like Figure 7 , 8 As shown in Figure 9, the latex tube 7 is divided into an inner tube layer 71 and an outer tube layer 72. An air-filled chamber 73 is formed between the inner tube layer 71 and the outer tube layer 72. The latex tube 7 is pressurized by the pressure ball 1 so that the latex tube 7 is tightly fitted to the cigarette 8.

[0052] like Figure 1 As shown, threaded conical openings 13 are respectively located at both ends of the first connector 4 and the second connector 5; the first connector 4 is connected to the pressure ball 1 and the air guide tube 3 through the threaded conical openings 13; the second connector 5 is connected to the air guide tube 3 and the latex tube 7 through the threaded conical openings 13. A pressure relief valve 2 is located on the first connector 4 and is used to release pressure from the inflation chamber 73 inside the latex tube 7.

[0053] like Figure 1 As shown, the air inlet 11 of the pressurizing ball is located at the top of the pressurizing ball 1. The air inlet 11 is designed for one-way airflow into the inner liner, forming a seal to prevent reverse gas flow. The connecting port 12 of the pressurizing ball is located at the bottom of the pressurizing ball 1. The connecting port 12 has an internal thread that matches the threaded conical opening 13 of the first connector 4, and the internal thread of the connecting port 12 is sealed to the threaded conical opening 13. Both ends of the air guide pipe 3 have internal threads that match the threaded conical openings 13 of the first connector 4 and the second connector 5, so that they are sealed to each other by threads.

[0054] like Figure 4 , 5 As shown in Figure 6, a rotary valve 6 is installed on the latex tube 7. During testing, after the pressure ball 1 and the air guide tube 3 are removed, the air in the inflation chamber 73 of the latex tube 7 is blocked from flowing out. The latex tube 7 is provided with an internal thread that matches the threaded conical opening 13 of the second connector 5, so that it can be connected by a threaded seal.

[0055] like Figure 4 As shown, the length of the latex tube 7 is set such that after the length of the labyrinth ring of the detection instrument is inserted into the reserved filter end 82, it can completely wrap around the filter section 82, thereby blocking the air intake of the filter.

[0056] like Figure 5 As shown, the length of the latex tube 7 is set such that after inserting the labyrinth ring of the detection instrument into the reserved filter end 82 and the required length of the combustion section of the tobacco section 81, it can completely wrap the filter 82 and the tobacco section 81, thereby blocking the air intake of the filter 82 and the tobacco section 81.

[0057] like Figure 6 As shown, the length of the latex tube 7 is set to completely wrap the tobacco section 81 after removing the length of the filter tip end 82 and the length of the reserved tobacco section 81 combustion section, thereby blocking the air intake of the tobacco section 81.

[0058] like Figure 3As shown, before starting the dynamic draw resistance testing process for cigarettes, a suitable latex tube 7 is selected based on the specific specifications of the cigarette 8 to be tested, such as its diameter and length. The latex tube 7 has a double-layer structure consisting of an inner tube layer 71 and an outer tube layer 72, forming an inflation chamber 73 between them. After assembling all components, a comprehensive inspection is conducted on the connections of the pressure ball 1, the first connector 4, the second connector 5, the pressure relief valve 2, the air guide tube 3, and the latex tube 7. Simultaneously, the rotary valve 6 on the latex tube 7 is opened to ensure stable and unobstructed gas delivery and control. The portion of the cigarette 8 to be tested that needs to be sealed is inserted into the latex tube 7, and the operator manually presses the pressure ball 1. The air inlet 11 at the top of the pressure ball 1 allows for one-way airflow into the inner liner, effectively preventing reverse gas flow and ensuring a stable and unidirectional inflation process. The operator repeatedly squeezes the pressure ball 1. Under pressure, the gas inside the ball flows smoothly into the air guide tube 3 through the passage formed by the tight seal between the pressure ball connection port 12 at the bottom of the pressure ball 1 and the threaded conical port 13 of the first connector 4. The air guide tube 3 then delivers the gas to the inflation chamber 73 of the latex tube 7. As gas continuously flows in, the air pressure in the inflation chamber 73 steadily increases, and the latex tube 7 begins to undergo adaptive deformation. The outer tube layer 72 contracts inward under air pressure, tightly adhering to the surface of the cigarette 8, blocking the air intake channel of the part of the cigarette 8 that needs to be sealed. This forces the airflow to enter only the unsealed part and the combustion cone when the cigarette is smoked. If the operator notices that the pressure in the inflation chamber 73 of the latex tube 7 exceeds the appropriate range, the pressure relief valve 2 can be opened to release excess gas and return the air pressure to a reasonable range, ensuring that the cigarette 8 remains in a stable and non-destructive testing state. After confirming the seal of the cigarette 8 to be tested is complete, turn the rotary valve 6 to close, blocking the gas flow between the latex tube 7 and the transmission channel. Turn the second connector 5 to detach the latex tube 7 from the gas guide tube 3. The gas pressure in the filling chamber 73 of the detached latex tube 7 remains compatible with the testing process. Next, the operator inserts the cigarette 8 with the latex tube 7 into the labyrinth ring 10 of the testing instrument and starts the test. After the test, remove the cigarette 8 connected to the latex tube 7 from the testing instrument 9, turn the rotary valve 6 to open the gas in the filling chamber 73, and quickly expel the gas. The instantaneous pressure drop loosens the outer tube layer 72 of the latex tube 7, making it easier to smoothly pull the smoked cigarette 8 out of the latex tube 7, completing the testing. After the test, collect and dispose of the used latex tube 7 according to regulations, wipe all parts clean, and store them in their proper places for future use.

[0059] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A device for assisting in the detection of dynamic draw resistance of a cigarette, comprising: A pressurizing ball (1), an air duct (3), a latex tube (7); characterized in that the pressurizing ball (1) is connected with one end of the air duct (3) through a joint for pressurizing the latex tube (7) to input gas; The other end of the air duct (3) is connected with the latex tube (7) through a joint for delivering gas into the latex tube (7); The latex tube (7) is provided in a hollow cylindrical shape for sleeving a cigarette to be detected; The latex tube (7) is provided with an inner tube layer (71) and an outer tube layer (72), and an inflation chamber (73) is formed between the inner tube layer (71) and the outer tube layer (72), and the latex tube (7) is tightly fitted with the cigarette by pressurizing the latex tube (7) through the pressurizing ball (1).

2. The auxiliary device for detecting dynamic draw resistance of a cigarette according to claim 1, characterized in that: The joint comprises a first joint (4) and a second joint (5); The first joint (4) and the second joint (5) are respectively provided with threaded conical ports (13) at two ends; The first joint (4) is connected with the pressurizing ball (1) and the air duct (3) through the threaded conical ports (13); The second joint (5) is connected with the air duct (3) and the latex tube (7) through the threaded conical ports (13).

3. The auxiliary device for detecting dynamic draw resistance of a cigarette according to claim 2, characterized in that: The first joint (4) is provided with a pressure relief valve (2) for discharging and relieving the inflation chamber (73) inside the latex tube (7).

4. The auxiliary device for detecting dynamic draw resistance of a cigarette according to claim 3, characterized in that: The pressurizing ball (1) is provided with a pressurizing ball air inlet hole (11) at the top end, the pressurizing ball air inlet hole (11) is provided with an air one-way inflow inner container to form a seal and block the reverse flow of gas.

5. The auxiliary device for detecting dynamic draw resistance of a cigarette according to claim 4, characterized in that: The bottom of the pressurizing ball (1) is provided with a pressurizing ball connecting port (12), and the pressurizing ball connecting port (12) is provided with an inner thread matched with the threaded conical port (13) of the first joint (4), and the pressurizing ball connecting port (12) is sealed and connected with the threaded conical port (13) through the inner thread.

6. The auxiliary device for detecting dynamic draw resistance of a cigarette according to claim 5, characterized in that: The air duct (3) is provided with an inner thread matched with the threaded conical port (13) of the first joint (4) and the second joint (5) at two ends, so that it is sealed and connected through threads.

7. The auxiliary device for detecting dynamic resistance of cigarettes according to claim 6, characterized in that: The latex tube (7) is provided with an inner thread matched with the threaded conical port (13) of the second joint (5), so that it is sealed and connected through threads.

8. The auxiliary device for detecting dynamic draw resistance of a cigarette according to claim 6, characterized in that: The latex tube (7) is provided with an inner thread matched with the threaded conical port (13) of the second joint (5), so that it is sealed and connected through threads.

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