A device for measuring cigarette free burning speed and its application

Abstract

The present invention relates to the technical field of cigarette combustion, and in particular to a device for measuring the free burning speed of cigarettes and an application thereof. The device comprises a workbench, a base is arranged on the workbench, a cigarette insertion plate is arranged in the middle of the base, an ignition mechanism is arranged on the base, the ignition mechanism comprises a first ignition component and a second ignition component, the first ignition component and the second ignition component are symmetrically arranged on both sides of the cigarette insertion plate, a connecting column is arranged on the base, an image acquisition component and a smoke collection component are arranged on the connecting column, and the image acquisition component is located in the smoke collection component. The device is used to solve the problems of the existing free burning speed measuring instrument of cigarettes, which, due to structural design defects, requires manual pushing of the ignition device to ignite the cigarette when in use, cannot be applied to the testing of multiple specifications of cigarettes, and the waste gas generated by cigarette combustion stays in the laboratory, affecting the environment and the health of workers.

Description

Technical Field

[0001] The present invention relates to the technical field of cigarette combustion, in particular to a device for measuring the free burning speed of cigarettes and applications thereof. Background Art

[0002] Cigarette combustibility affects the number of puffs and the combustion process, which in turn influences the smoke quality. More importantly, it directly impacts the release of smoke constituents, with the release of harmful constituents affecting cigarette safety. Improving cigarette combustibility can reduce the production of harmful constituents. Therefore, studying cigarette combustibility is crucial for improving cigarette quality and safety. The free burning rate (FVR) of a cigarette is a commonly used auxiliary technical indicator in cigarette product design and improvement. It comprehensively reflects the combustion performance of cigarette paper and tobacco. It is significantly correlated with the number of puffs, smoke tar, and CO levels, and directly influences the consumer's intuitive perception of the smoking process. There are two forms of cigarette combustion: combustion during puffing, known as drawing, and combustion between puffs, known as smoldering (also known as free burning or static burning). The burning rates of cigarettes during drawing and smoldering correspond to the drawing rate and smoldering rate, respectively.

[0003] Currently, the tobacco industry in my country primarily uses a free-burning rate tester to measure the combustibility of cigarettes. This domestic free-burning rate tester consists of an ignition device, a combustion plug, a visual sensor unit, a control unit, and a data processing unit. The operating principle is that ten cigarettes to be tested are inserted into the ten holes on the cigarette holder. The visual and operating system software are activated, and then the ignition switch is activated. The ignition device is manually pushed to ignite the cigarettes, initiating the test. The length of the cigarette within the burn line is measured. The visual sensor unit collects data on the free-burning rate of the lit cigarette. The data processing unit analyzes the collected data, generates a test report, and displays and prints the measurement and processing results. The measuring instrument has the following shortcomings: First, the ignition device on the left and right sliders needs to be manually pushed to align the cigarette for ignition; second, the measuring instrument was developed earlier, and the aperture of the cigarette inserting plate can only accommodate the circumference of regular cigarettes, and is not suitable for testing medium and thin cigarettes with a smaller circumference; third, the measuring instrument was developed earlier, and the cigarette length (30mm, 40mm) set by the test system is suitable for testing cigarettes with a length of 84mm, and is not suitable for testing cigarettes with a length of more than 90mm; fourth, when the cigarette is burning, there is no matching exhaust device to discharge the smoke and exhaust gas outside the laboratory. The exhaust gas remains in the laboratory, and the smoke is filled, affecting the visibility and air quality in the room, and affecting the health of the testers and the testing work. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a cigarette free burning rate measuring device and its application, which is used to solve the problems of the existing cigarette free burning rate measuring instrument due to structural design defects, which result in the need to manually push the ignition device to ignite the cigarette when in use, and cannot be applied to the testing of multiple specifications of cigarettes currently available, and the waste gas generated by cigarette combustion remains in the laboratory, affecting the environment and the health of workers.

[0005] The present invention solves the above technical problems through the following technical means:

[0006] A device for measuring the free burning rate of cigarettes includes a workbench, a base is provided on the workbench, a cigarette insertion plate is provided in the middle of the base, an ignition mechanism is provided on the base, the ignition mechanism includes a first ignition component and a second ignition component, the first ignition component and the second ignition component are symmetrically arranged on both sides of the cigarette insertion plate, a connecting column is provided on the base, an image acquisition component and a smoke collection component are provided on the connecting column, and the image acquisition component is located inside the smoke collection component.

[0007] Furthermore, the cigarette insertion board includes a base, a clamping block, a connecting plate and a cigarette insertion seat. The clamping block is fixedly arranged on the base, and a clamping groove is provided on the base. The clamping block is clamped in the clamping groove. A through groove is provided on the base, and connecting grooves are provided on both sides of the through groove. The connecting plate is provided in the through groove, and ear plates are symmetrically provided on the connecting plate. The ear plates are fixed in the connecting groove. The cigarette insertion seats are evenly arranged on both sides of the connecting plate, and pins are provided in the cigarette insertion seats. With this arrangement, the connecting plate and the cigarette insertion seat on the cigarette insertion board are easy to replace, so that ordinary cigarettes, medium cigarettes and thin cigarettes can be stably inserted, and then cigarettes of different specifications can be inserted.

[0008] Furthermore, the first ignition assembly and the second ignition assembly have the same structure. The first ignition assembly includes a linear motor, a motor seat, a support plate, a guide rail and an ignition component. The motor seat is fixedly set on the base, the linear motor is fixedly set on the motor seat, the support plate is symmetrically set on the base, the guide rail is set on the base and fixedly connected to the two support plates, and the ignition component is set between the two support plates and fixedly connected to the output shaft of the linear motor. With this arrangement, the linear motor can drive the ignition component to approach the cigarette on the cigarette insertion plate for ignition through operation, thereby avoiding manual operation that may easily cause wrinkles in the cigarette.

[0009] The ignition element comprises a push plate, a first sliding plate, a second sliding plate, a heat insulation plate, a protection plate and a heating coil, the push plate is arranged between the two support plates, the first sliding plate and the second sliding plate are both arranged on the push plate, the support plate is provided with a first slide groove, the first slide groove passes through the guide rail, the first sliding plate is located in the first slide groove, the support plate is provided with a second slide groove, the second sliding plate is located in the second slide groove, the heat insulation plate is arranged on the free end of the second sliding plate, the heat insulation plate is evenly provided with a plurality of grooves, the heating coil is arranged in the groove, the protection plate is arranged on the heat insulation plate, and a smoke hole is provided on the protection plate at the position of the heating coil, and a proximity switch is provided on the guide rail. In this way, on the one hand, the first sliding plate and the second sliding plate can be slidably installed on the support plate, so that when the ignition element is not working, it will not affect the insertion of cigarettes on the cigarette insertion plate. On the other hand, the cigarettes on the cigarette insertion plates can be ignited separately without causing wrinkles on the cigarettes.

[0010] Furthermore, the base is provided with placement grooves on both sides of the cigarette insertion plate, a storage box is slidably arranged in the placement groove, and a handle is provided on the storage box. This arrangement can collect the ashes after burning cigarettes and facilitate cleaning.

[0011] Furthermore, the image acquisition component includes a horizontal plate, a mounting base, a visual sensor and a light group. The horizontal plate is set on the connecting column, the mounting base is fixedly set on the horizontal plate, the visual sensor is fixedly set in the middle of the mounting base, and the light group is evenly set on the mounting base. With this arrangement, the burning speed of the cigarette when it is statically burning can be photographed and transmitted to the computer for burning speed testing.

[0012] Furthermore, the smoke collection assembly includes a first cover body, a second cover body, a first air guide cover, a second air guide cover, a cylinder, a guide rod, a blocking member and a collecting member, the second cover body is fixedly arranged on the first cover body, the first cover body is arranged on a transverse plate, the first air guide cover is arranged in the first cover body, a first fixing plate is arranged on the first air guide cover, the first fixing plate is fixedly connected to the inner wall of the first cover body, the second air guide cover is arranged on the first air guide cover, the second air guide cover is arranged on the second fixing plate, the second fixing plate is connected to the inner wall of the first cover body, the transverse plate passes through the first air guide cover and the second air guide cover, the first A guide hole is provided on the top of the deflector cover, and a plurality of through holes are provided on the second fixed plate. The cylinder is fixedly arranged in the connecting column, and a transmission plate is provided at the end of the output shaft of the cylinder. The transmission plate is fixedly connected to the cross plate. A track groove is provided on the connecting column, and the track groove matches the cross plate. The guide rods are symmetrically arranged on both sides of the cylinder, and the guide rods are passed through the transmission plate. The blocking piece is arranged on the first cover body and is transmission-connected to the guide hole. The collecting piece is connected to the blocking piece. With this arrangement, the smoke generated by the burning cigarette can be collected to avoid staying in the laboratory and affecting the laboratory environment and the health of the staff.

[0013] Furthermore, the blocking member includes a support rod, a mounting plate, an electric push rod, a pushing block, a sleeve, a sealing sleeve and a sealing block. The support rod is evenly arranged on the first cover body, the mounting plate is arranged on the support rod, the electric push rod is arranged on the mounting plate, the pushing block is arranged at the free end of the electric push rod, the sleeve is passed through the second cover body and the second air guide cover, the pushing block is fixedly connected to the top of the sleeve, the sealing sleeve is sleeved on the sleeve, a plurality of air holes are opened on the circumference of the sleeve, the air holes pass through the sealing sleeve, the sealing block is fixedly set in the sleeve, one end of the collecting member is passed through the sealing block, a movable groove is opened on the sleeve, and the collecting member is located in the movable groove. This arrangement can prevent the collecting member from affecting the free burning of cigarettes when it is working.

[0014] Furthermore, the collecting part includes a corrugated hose, a negative pressure machine, a flange, a silicone tube and a water tank. One end of the corrugated hose is fixedly connected to the sealing block and passes through the movable groove. The negative pressure machine is fixedly installed on the workbench through the flange. The other end of the corrugated hose is connected to the input end of the negative pressure machine, one end of the silicone tube is connected to the output end of the negative pressure machine, and the other end is located in the water tank. A cover is provided on the water tank, handles are symmetrically provided on the water tank, and scale lines are provided on the water tank. With this arrangement, the negative pressure machine can work intermittently to discharge the generated smoke into the water tank, and the smoke can be dissolved by the agent in the water tank, thereby purifying the smoke.

[0015] The invention also discloses the application of a device for measuring the free burning speed of cigarettes, which is applicable to regular cigarettes, medium cigarettes and thin cigarettes.

[0016] Regular cigarettes have a diameter of 24.2mm and a length of 84mm. Medium cigarettes have a diameter of 20-22.5mm and a length of 88-94mm. Slim cigarettes have a diameter of 17mm and a length of 90-97mm.

[0017] The device for measuring the free burning speed of cigarettes and its application of the present invention have the following advantages:

[0018] 1. Through the cooperation of the base, cigarette inserter, ignition mechanism, image acquisition component and smoke collection component, it can measure the free burning speed of cigarettes of various specifications, and collect and purify the smoke generated by the burning cigarettes to avoid affecting the laboratory environment and the health of staff;

[0019] 2. The ignition mechanism includes a first ignition assembly and a second ignition assembly. The first ignition assembly and the second ignition assembly have the same structure. The first ignition assembly includes a linear motor, a motor base, a support plate, a guide rail, and an ignition component. Through the mutual cooperation of the linear motor, the motor base, the support plate, the guide rail, and the ignition component, cigarettes of different specifications on the cigarette holder can be ignited separately. This is convenient and fast, avoiding wrinkles caused by manual ignition. In addition, a group of 10 cigarettes can be tested simultaneously under the same test environment to ensure the consistency of the test. It takes about 7 minutes and can quickly detect and produce test results.

[0020] 3. The image acquisition component includes a horizontal plate, a mounting base, a visual sensor and a light group. Through the mutual cooperation of the visual sensor and the light group, the test accuracy is high and the burning time can be accurately measured to 0.01s.

[0021] 4. The smoke collection assembly includes a first cover body, a second cover body, a first flow guide cover, a second flow guide cover, a cylinder, a guide rod and a collecting piece. Through the mutual cooperation of the first cover body, the second cover body, the first flow guide cover, the second flow guide cover, the cylinder, the guide rod and the collecting piece, the smoke generated when the cigarette is freely burning can be collected and purified to avoid the smoke from spreading to the laboratory and affecting the laboratory environment and the health of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a device for measuring the free burning speed of cigarettes and its application according to the present invention;

[0023] Figure 2 This is a schematic cross-sectional view of a device for measuring the free burning speed of cigarettes and its application. Figure 1 ;

[0024] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 4 yes Figure 2 Schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 5 This is a schematic cross-sectional view of a device for measuring the free burning speed of cigarettes and its application. Figure 2 ;

[0027] Figure 6 This is a schematic structural diagram of a cigarette free burning speed measuring device and a cigarette inserting plate used in the present invention;

[0028] Figure 7 This is a schematic diagram of the disassembled structure of a cigarette free burning speed measuring device and a cigarette inserting plate used in the present invention;

[0029] Figure 8 This is a schematic structural diagram of a device for measuring the free burning speed of cigarettes and an image acquisition component in its application;

[0030] Figure 9 This is a device for measuring the free burning speed of cigarettes and a control relationship diagram in its application;

[0031] Among them, the workbench 1, the base 2, the placement slot 201, the clamping slot 202, the power switch 21, the ignition switch 22, the interface 23, the motor seat 24, the linear motor 241, the support plate 25, the second slide slot 251, the guide rail 26, the proximity switch 261, the first slide slot 262, the push plate 27, the first sliding plate 271, the second sliding plate 272, the heat insulation plate 28, the groove 281, the heating coil 282, the protection plate 283, and the smoke hole 284;

[0032] Base 3, through slot 301, connecting slot 302, clamping block 31, connecting plate 32, ear plate 321, screw 322, cigarette holder 33, pin 34, storage box 4, handle 41, connecting column 5, track slot 501, horizontal plate 51, mounting base 52, visual sensor 521, light assembly 522, transmission plate 53, cylinder 54, guide rod 55;

[0033] First cover body 6, second cover body 61, first air guide cover 62, first fixing plate 621, air guide hole 622, second air guide cover 63, second fixing plate 631, through hole 632, corrugated hose 64, negative pressure machine 65, flange 651, silicone tube 66, water tank 7, cover plate 71, handle 72, scale line 73, support rod 8, mounting plate 81, electric push rod 82, push block 821, sleeve 83, air hole 831, movable groove 832, sealing sleeve 84, sealing block 85. DETAILED DESCRIPTION

[0034] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments:

[0035] like Figure 1-9 As shown, a device for measuring the free burning rate of cigarettes and its application according to the present invention comprises a workbench 1, a base 2 disposed on the workbench 1, and a cigarette insertion plate disposed in the middle of the base 2 for inserting cigarettes of different sizes, such as regular, medium, and thin cigarettes. An ignition mechanism is disposed on the base 2, comprising a first ignition assembly and a second ignition assembly symmetrically disposed on either side of the cigarette insertion plate. The interaction of the first and second ignition assemblies enables convenient and quick automatic ignition of cigarettes inserted on either side of the cigarette insertion plate. A connecting column 5 is provided on the base 2, and an image acquisition component and a smoke collection component are provided on the connecting column 5. The image acquisition component is located inside the smoke collection component. Through the setting of the image acquisition component, the free burning speed of the cigarette on the cigarette inserting plate can be photographed, and the free burning speed of the cigarette can be measured in conjunction with a computer; through the setting of the smoke collection component, the smoke generated by the burning cigarette can be collected and purified to prevent the generated smoke from staying in the laboratory and affecting the laboratory environment and the health of the staff. At the same time, it is avoided from being directly discharged into the external environment and polluting the environment. A power switch 21 is provided on the base 2 for starting the entire device. An ignition switch 22 is provided on the base 2 for controlling the operation of the first ignition component and the second ignition component. An interface 23 is provided on the base 2, and the interface 23 is used to connect to a computer so that the computer can collect test data of the entire device and perform analysis.

[0036] The cigarette inserter includes a base 3, a snap-in block 31, a connecting plate 32, and a cigarette holder 33. The snap-in block 31 is fixed to the base 3. The base 2 is provided with a snap-in slot 202. The snap-in block 31 snaps into the snap-in slot 202, securing the base 3 to the base 2. A through slot 301 is defined in the base 3. Connecting slots 302 are defined on either side of the through slot 301. The connecting plate 32 is positioned within the through slot 301. Lugs 321 are symmetrically provided on the connecting plate 32. The lugs 321 are fixed to the connecting slots 302 by screws 322, allowing the connecting plate 32 to be removably attached to the base 3. Cigarette holders 33 are evenly spaced on either side of the connecting plate 32 for receiving cigarettes. By replacing the cigarette holders 33 with different diameters, the cigarette inserter can accommodate regular, medium, and thin cigarettes, thereby accommodating cigarettes of varying sizes. The cigarette holder 33 is available in two sizes: the first has a diameter of 6.5mm, suitable for cigarettes with a circumference of 20mm or less; the second has a diameter of 8mm, suitable for cigarettes with a circumference of 20.1 to 24.6mm. Each holder 33 is equipped with an insertion pin 34, which further stabilizes the cigarette inserted into the holder 33, keeping it level and preventing it from accidentally falling.

[0037] The first ignition assembly and the second ignition assembly have the same structure. The first ignition assembly includes a linear motor 241, a motor base 24, a support plate 25, a guide rail 26 and an ignition component. The motor base 24 is fixedly mounted on the base 2, and the linear motor 241 is fixedly mounted on the motor base 24. The support plates 25 are symmetrically mounted on the base 2, and the guide rail 26 is fixedly mounted on the base 2 and fixedly connected to the two support plates 25. The ignition component is disposed between the two support plates 25 and is fixedly connected to the output shaft of the linear motor 241. When the linear motor 241 is working, it can drive the ignition component close to the cigarette on the cigarette inserting plate for ignition, thereby avoiding deformation and wrinkling of the cigarette due to manual operation.

[0038] The ignition component includes a push plate 27, a first sliding plate 271, a second sliding plate 272, a heat shield 28, a heating coil 282, and a protective plate 283. The push plate 27 is positioned between the two support plates 25. The first sliding plate 271 and the second sliding plate 272 are both positioned on the push plate 27. The support plate 25 is provided with a first chute 262, which extends through the guide rail 26. The first sliding plate 271 is positioned within the first chute 262. The support plate 25 is provided with a second chute 251, which is positioned within the second chute 251. The heat shield 28 is fixedly positioned at the free end of the second sliding plate 272. The heat shield 28 is provided with multiple grooves 281 at equal intervals, corresponding to the cigarette holder. The heating coil 282 is positioned within the grooves 281 and is used to ignite a cigarette plugged into the cigarette holder 33. A proximity switch 261 is provided on the guide rail 26 to ensure that the heating coil 282 on the heat insulation plate 28 is close to the burning end of the cigarette and stays for 5-10 seconds for ignition. After ignition, the linear motor 241 is automatically controlled to work, so that the heat insulation plate 28 and the heating coil 282 return to their original positions. The protective plate 283 is fixed to the heat insulation plate 28 by bolts. A cigarette hole 284 is provided on the protective plate 283 at the position of the heating coil 282. On the one hand, it allows the cigarette to contact the heating coil 282 for ignition. On the other hand, during continuous testing, it prevents the staff from touching the heating coil 282 and causing burns. The ignition component adopts a delay control circuit. The delay control circuit adopts a 555 timer. The heating circuit is disconnected 20-30 seconds after being triggered. The time is adjustable to ensure that there are unlit cigarettes for the second ignition after the first ignition, and to avoid long-term heating.

[0039] The base 2 is provided with placement grooves 201 on both sides of the cigarette insertion plate. A storage box 4 is slidably arranged in the placement groove 201. The storage box 4 is provided with a handle 41. Through the arrangement of the storage box 4, the ashes after burning cigarettes can be collected and cleaned conveniently.

[0040] The image acquisition assembly includes a horizontal plate 51, a mounting bracket 52, a visual sensor 521, and a light assembly 522. The horizontal plate 51 is mounted on the connecting column 5, and the mounting bracket 52 is fixed to the horizontal plate 51. The visual sensor 521 is fixed to the center of the mounting bracket 52 and transmits the free burning status of cigarettes on both sides of the cigarette holder to the computer control system. The light assembly 522 is evenly distributed on the mounting bracket 52 and provides illumination for the visual sensor 521. Through the interaction between the visual sensor 521, the light assembly 522, and the computer, the burning speed of the statically burning cigarette can be captured and transmitted to the computer for burning speed testing.

[0041] Visual sensor 521 uses images to mark the starting and ending points of cigarette combustion. The starting point is set 5 mm axially from the burning end of the cigarette, ensuring a combustion cone forms at that location. When visual sensor 521 is operating, the computer control system displays two arrows marked on the cigarette's axis. This allows users to see if they are aligned, indicating whether the axis of the inserted cigarette is perpendicular to the vertical plane of the cigarette inserter, and to check if the cigarette's axial position is level when inserted into the inserter. The data processing system within the control system can mark the burn length of 30 mm (regular cigarettes) or 40 mm or 50 mm (medium and slim special-shaped cigarettes) with an error of no more than 0.2 mm. The data processing system analyzes and processes the data collected by visual sensor 521. The computer interface is written in the Visual Basic programming language and generates a table of various data. The table includes the burning status, elapsed time, speed, mean speed, maximum speed, minimum speed, coefficient of variation, test time, brand of the tested cigarettes, and inspector information for 10 cigarettes.

[0042] The smoke collection assembly includes a first cover body 6, a second cover body 61, a first air guide cover 62, a second air guide cover 63, a cylinder 54, a guide rod 55, a blocking member and a collecting member. The second cover body 61 is fixedly arranged on the first cover body 6, and the first cover body 6 is arranged on the transverse plate 51, so that the first cover body 6 and the second cover body 61 are stably mounted on the transverse plate 51. The first air guide cover 62 is arranged in the first cover body 6, and the cross section of the first air guide cover 62 is conical to facilitate the flow of smoke. A first fixing plate 621 is arranged on the first air guide cover 62, and the first fixing plate 621 is fixedly connected to the inner wall of the first cover body 6. The second air guide cover 63 is arranged on the first air guide cover 62, and the cross section of the second air guide cover 63 is conical. A second fixing plate 631 is arranged on the second air guide cover 63, and the second fixing plate 631 is fixedly connected to the inner wall of the first cover body 6. The horizontal plate 51 extends through the first and second air deflectors 62, 63, and is used to further securely mount the first and second air deflectors 62, 63 within the first housing 6. A guide hole 622 is defined at the top of the first air deflector 62, and a plurality of through holes 632 are defined on the second fixing plate 631. When smoke from a burning cigarette passes through the guide holes 622 and along the gap between the first and second air deflectors 62, 63, it enters the through holes 632, where it is collected between the second air deflector 63 and the second housing 61. A cylinder 54 is fixedly mounted within the connecting column 5. A transmission plate 53 is fixedly mounted at the end of the cylinder 54's output shaft. The transmission plate 53 is fixedly connected to the cross plate 51. A track groove 501 is defined in the connecting column 5, which mates with the cross plate 51. When the cylinder 54 is in operation, it drives the transmission plate 53 within the connecting column 5, thereby driving the cross plate 51 along the track groove 501. This movement of the cross plate 51 drives the first cover 6, the second cover 61, the first air guide 62, the second air guide 63, the blocking member, and the image acquisition assembly up and down. This allows the cigarette to be completely covered during the free burning rate test, preventing smoke from escaping into the laboratory and affecting the laboratory environment and the health of personnel. Furthermore, this prevents interference with the image acquisition assembly and the measurement of the free burning rate of the cigarette. Guide rods 55 are symmetrically positioned on either side of the cylinder 54. These guide rods extend through the transmission plate 53 and guide the transmission plate 53, preventing the cross plate 51 from becoming stuck in the track groove 501. The collecting piece is connected to the blocking piece and is used for collecting and purifying the smoke generated by the burning of cigarettes.

[0043] The sealing member includes a support rod 8, a mounting plate 81, an electric push rod 82, a push block 821, a sleeve 83, a sealing sleeve 84, and a sealing block 85. The support rod 8 is evenly mounted on the first housing 6. The mounting plate 81 is fixed to the support rod 8. The electric push rod 82 is mounted on the mounting plate 81. The push block 821 is located at the free end of the output shaft of the electric push rod 82. The sleeve 83 passes through the second housing 61 and the second air deflector 63. The push block 821 is fixedly connected to the top of the sleeve 83, enabling the electric push rod 82 to move the sleeve 83 when in operation. The sealing sleeve 84 is mounted on the sleeve 83 to seal the connection between the sleeve 83, the second air deflector 63, and the second housing 61. The sleeve 83 is circumferentially defined with multiple air holes 831 that extend through the sealing sleeve 84, allowing flue gas collected between the second air deflector 63 and the second housing 61 to enter the sleeve 83 and, consequently, the corrugated hose 64. A sealing block 85 is fixedly mounted within sleeve 83, with one end of the collector inserted into the sealing block to prevent smoke and exhaust gases from escaping. Sleeve 83 defines a movable slot 832, within which the collector is positioned, preventing movement of sleeve 83 from interfering with its operation. When the electric push rod 82 is activated, it lowers sleeve 83 and sealing sleeve 84, sealing diversion hole 622. This ensures that the collector does not affect the free burning of cigarettes during operation.

[0044] The collecting part includes a corrugated hose 64, a negative pressure machine 65, a flange 651, a silicone tube 66 and a water tank 7. One end of the corrugated hose 64 is fixedly connected to the sealing block 85 and passes through the movable groove 832. The negative pressure machine 65 is fixedly mounted on the workbench 1 through the flange 651. The other end of the corrugated hose 64 is connected to the input end of the negative pressure machine 65. One end of the silicone tube 66 is connected to the output end of the negative pressure machine 65, and the other end is located in the water tank 7, which is used to transport the flue gas and waste gas into the water tank 7. The water tank 7 is filled with a mixture of tap water and hydrogen peroxide, which can dissolve and filter the flue gas so that the exhausted gas will not affect the environment. A cover plate 71 is provided on the water tank 7, and handles 72 are symmetrically provided on the water tank 7 to facilitate the use of the water tank 7. A scale line 73 is provided on the water tank 7 to facilitate the timely treatment of the wastewater in the water tank 7. The intermittent operation of the negative pressure machine 65 can discharge the generated smoke into the water tank 7, and the smoke can be dissolved by the agent in the water tank 7, thereby purifying the smoke.

[0045] The method of using this embodiment is as follows: when using, insert the cigarettes to be tested into the cigarette holders 33 on both sides of the base 3 according to different specifications, keep the cigarettes level, open the visual software on the computer desktop, select software control and select cigarette test, open the cigarette free burning rate tester operating system software, select the cigarette length (30, 40, 50) mm according to the length of the cigarette to be tested, and check whether the two "arrows" on the cigarette are in a horizontal and positive position through the visual sensor 521 controlled by the visual software. Otherwise, make a correction to the cigarette. Adjustment is started by the ignition switch 22, and the linear motor 241 works. During the operation of the linear motor 241, the push plate 27 is driven to move between the two support plates 25. The movement of the push plate 27 drives the first sliding plate 271 and the second sliding plate 272 to move. The first sliding plate 271 triggers the proximity switch 261 during the movement. At this time, the second sliding plate 272 drives the heat insulation plate 28 and the heating coil 282 to approach the burning end of the cigarette, and makes the burning end of the cigarette contact with the heating coil, and ignites the cigarette. After all the cigarettes are ignited, the linear motor 241 It works again, driving the heat insulation plate 28, the first sliding plate 271 and the second sliding plate 272 to reset, the cylinder 54 starts, the output shaft of the cylinder 54 descends, driving the first cover 6, the second cover 61, the cross plate 51, the visual sensor 521, the light group 522, the first guide cover 62 and the second guide cover 63 to descend, covering all the lit cigarettes, so that the smoke generated by the burning cigarettes flows along the first guide cover 62, the guide hole 622 and the through hole 632 into the space between the second guide cover 63 and the second cover 61. When the smoke accumulates to a certain level, The electric push rod 82 is started, and the output shaft of the electric push rod 82 drives the pushing block 821 to descend. The descent of the pushing block 821 drives the sleeve 83 and the sealing sleeve 84 to descend, so that the sleeve 83 and the sealing sleeve 84 seal the guide hole 622. The negative pressure machine 65 is started, and the accumulated flue gas is sucked through the corrugated hose 64, so that the flue gas enters the water tank 7 along the silicone tube 66. The flue gas contacts and is purified with the mixed liquid in the water tank 7. After the negative pressure machine 65 completes the suction, the output shaft of the electric push rod 82 contracts, so that the guide hole 622 is opened, so that the flue gas and exhaust gas can be temporarily stored again.

[0046] After all the cigarettes are burned, the cylinder 54 is started again. The output shaft of the cylinder 54 drives the transmission plate 53 to rise. The transmission plate 53 drives the cross plate 51, the first cover 6, the second cover 61, the first air guide cover 62, the second air guide cover 63 and the electric push rod 82 to rise, so that the cigarette insertion plate is exposed. After cleaning the cigarette butts on the cigarette insertion plate and the cigarette ashes in the storage box 4, the next test can be started.

[0047] The above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that the technical solutions of the present invention may be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, and such modifications or equivalents shall be encompassed by the claims of the present invention. Any techniques, shapes, and structures not described in detail herein are well known.

Claims

1. A device for measuring the free burning rate of cigarettes, comprising a workbench, characterized in that: The workbench is provided with a base, a cigarette inserting plate is provided in the middle of the base, an ignition mechanism is provided on the base, the ignition mechanism includes a first ignition component and a second ignition component, the first ignition component and the second ignition component are symmetrically arranged on both sides of the cigarette inserting plate, a connecting column is provided on the base, an image acquisition component and a smoke collection component are provided on the connecting column, and the image acquisition component is located inside the smoke collection component; The smoke collection assembly includes a first cover body, a second cover body, a first air deflector, a second air deflector, a cylinder, a guide rod, a blocking member and a collecting member, the second cover body is fixedly arranged on the first cover body, the first cover body is arranged on a transverse plate, the first air deflector is arranged in the first cover body, the first air deflector is provided with a first fixing plate, the first fixing plate is fixedly connected to the inner wall of the first cover body, the second air deflector is provided on the first air deflector, the second air deflector is provided with a second fixing plate, the second fixing plate is connected to the inner wall of the first cover body, and the transverse plate passes through the first air deflector and the second air deflector; A guide hole is provided on the top of the first air guide cover, a plurality of through holes are provided on the second fixing plate, the cylinder is fixedly arranged in the connecting column, a transmission plate is provided at the end of the output shaft of the cylinder, the transmission plate is fixedly connected to the cross plate, a track groove is provided on the connecting column, the track groove matches the cross plate, the guide rods are symmetrically arranged on both sides of the cylinder, the guide rods are passed through the transmission plate, the blocking member is provided on the first cover body and is transmission-connected to the guide hole, and the collecting member is communicated with the blocking member; The sealing member includes a support rod, a mounting plate, an electric push rod, a pushing block, a sleeve, a sealing sleeve and a sealing block. The support rod is evenly arranged on the first cover body, the mounting plate is arranged on the support rod, the electric push rod is arranged on the mounting plate, the pushing block is arranged on the free end of the electric push rod, the sleeve is passed through the second cover body and the second air guide cover, the pushing block is fixedly connected to the top of the sleeve, the sealing sleeve is sleeved on the sleeve, a plurality of air holes are opened on the circumference of the sleeve, the air holes pass through the sealing sleeve, the sealing block is fixedly set in the sleeve, one end of the collecting member is passed through the sealing block, a movable groove is opened on the sleeve, and the collecting member is located in the movable groove.

2. The device for measuring the free burning speed of cigarettes according to claim 1, characterized in that: The cigarette plugging plate includes a base, a clamping block, a connecting plate and a cigarette plugging seat. The clamping block is fixedly arranged on the base, a clamping groove is arranged on the base, and the clamping block is clamped in the clamping groove. A through groove is provided on the base, and connecting grooves are provided on both sides of the through groove. The connecting plate is arranged in the through groove, and ear plates are symmetrically arranged on the connecting plate. The ear plates are fixedly arranged in the connecting groove. The cigarette plugging seats are evenly arranged on both sides of the connecting plate, and pins are provided in the cigarette plugging seats.

3. The device for measuring the free burning speed of cigarettes according to claim 1, characterized in that: The first ignition assembly and the second ignition assembly have the same structure. The first ignition assembly includes a linear motor, a motor seat, a support plate, a guide rail and an ignition component. The motor seat is fixedly set on the base, the linear motor is fixedly set on the motor seat, the support plate is symmetrically set on the base, the guide rail is set on the base and fixedly connected to the two support plates, and the ignition component is set between the two support plates and fixedly connected to the output shaft of the linear motor.

4. The device for measuring the free burning speed of cigarettes according to claim 3, characterized in that: The ignition component includes a push plate, a first sliding plate, a second sliding plate, a heat insulation plate, a protective plate and a heating coil, the push plate is arranged between two support plates, the first sliding plate and the second sliding plate are both arranged on the push plate, a first slide groove is provided on the support plate, the first slide groove passes through the guide rail, the first sliding plate is located in the first slide groove, a second slide groove is provided on the support plate, the second sliding plate is located in the second slide groove, the heat insulation plate is arranged at the free end of the second sliding plate, a plurality of grooves are evenly provided on the heat insulation plate, the heating coil is arranged in the groove, the protective plate is arranged on the heat insulation plate, a smoke hole is provided on the protective plate at the position of the heating coil, and a proximity switch is provided on the guide rail.

5. The device for measuring the free burning speed of cigarettes according to claim 2, characterized in that: The base is provided with placement grooves on both sides of the cigarette inserting plate. A storage box is slidably arranged in the placement groove, and a handle is arranged on the storage box.

6. The device for measuring the free burning speed of cigarettes according to claim 1, characterized in that: The image acquisition component includes a horizontal plate, a mounting seat, a visual sensor and a light group. The horizontal plate is set on the connecting column, the mounting seat is fixedly set on the horizontal plate, the visual sensor is fixedly set in the middle of the mounting seat, and the light group is evenly set on the mounting seat.

7. The device for measuring the free burning speed of cigarettes according to claim 1, characterized in that: The collecting part includes a corrugated hose, a negative pressure machine, a flange, a silicone tube and a water tank. One end of the corrugated hose is fixedly connected to the sealing block and passes through the movable groove. The negative pressure machine is fixedly mounted on the workbench through the flange. The other end of the corrugated hose is connected to the input end of the negative pressure machine. One end of the silicone tube is connected to the output end of the negative pressure machine, and the other end is located in the water tank. A cover plate is provided on the water tank, handles are symmetrically provided on the water tank, and scale lines are provided on the water tank.

8. An application of the device for measuring the free burning rate of cigarettes according to any one of claims 1 to 7, characterized in that: Applicable to regular cigarettes, medium cigarettes and slim cigarettes.

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