Tobacco fragment back-doping device and method

Abstract

The invention provides a tobacco fragment back-mixing device, which is used for conveying tobacco fragments to a cigarette making machine, and comprises a separating mechanism used for separating tobacco shreds and fragments from tobacco materials, and the separating mechanism comprises a tobacco material inlet, a tobacco shred outlet and a fragment outlet; the stock bin is used for receiving the fragments output by the fragment outlet and caching the fragments, the stock bin is provided with a discharging port, and an electric valve is arranged on the discharging port and used for controlling opening and closing of the discharging port; the electronic belt scale is arranged below the discharging opening and used for measuring the weight of the fragments output by the discharging opening, and when the weight of the fragments reaches a preset adding value, the electric valve is closed; the conveyor is arranged between the electronic belt scale and the cigarette making machine, and the conveyor is used for conveying the fragments measured by the electronic belt scale into the cigarette making machine. According to the invention, the amount of back-doping fragments can be controlled, and the back-doping precision is improved. The invention further provides a back doping method.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco processing, and particularly relates to a tobacco fragment re-blending device and method. Background Art

[0002] In a tobacco silk production line, a screening vibrating trough is provided in front of the feeding section. The screening vibrating trough screens tobacco raw materials into cut tobacco, fragments, and tobacco dust using sieves with different pore sizes. The sieve includes an upper sieve and a lower sieve. The pore size of the upper sieve is larger than that of the lower sieve. Fragments and tobacco dust can pass through the pores of the upper sieve and fall onto the lower sieve, and the tobacco dust can pass through the pores of the lower sieve and fall into the recovery box below the vibrating trough. Among them, the recovered tobacco dust can be processed and refined as a tobacco product additive, and the cut tobacco is used for processing cigarettes. In addition, fragments can be added to cigarettes according to a ratio set by process parameters to avoid waste of resources. Specifically, high-grade cigarettes cannot contain fragments, and medium- and low-grade cigarettes can contain a fixed proportion of fragments. The proportion of fragments added to medium- and low-grade cigarettes is set according to the market positioning of the cigarettes. Lower-grade cigarettes can add more fragments.

[0003] In the prior art, when adding fragments to a tobacco product, technicians need to manually pick up the fragments from the fragment outlet of the vibrating trough and store them in a fixed position. Subsequently, a fixed weight of fragments is manually added to the tobacco product according to process requirements. However, it is not easy to control the amount of fragments during manual re-blending, and the re-blending accuracy is very low. Summary of the Invention

[0004] The purpose of the present invention is to solve the technical problems that it is not easy to control the amount of re-blended tobacco fragments and the re-blending accuracy is unstable when re-blending tobacco fragments. The present invention provides a tobacco fragment re-blending device and method that can control the amount of re-blended fragments and improve the re-blending accuracy.

[0005] To solve the above technical problems, an embodiment of the present invention provides a tobacco fragment re-blending device for conveying tobacco fragments to a cigarette machine. The re-blending device includes:

[0006] A separation mechanism for separating cut tobacco and fragments from tobacco material. The separation mechanism includes a tobacco material inlet, a cut tobacco outlet, and a fragment outlet. The cut tobacco outlet is located above the feeding port of the cigarette machine, and the cut tobacco output from the cut tobacco outlet can fall into the cigarette machine;

[0007] A storage bin for receiving the fragments output from the fragment outlet and caching the fragments. The storage bin is provided with a discharge port, and an electric valve is provided on the discharge port. The electric valve is used to control the opening and closing of the discharge port;

[0008] An electronic belt scale is provided below the discharge port. The electronic belt scale is used to measure the weight of the fragments output from the discharge port. When the weight of the fragments reaches a preset addition value, the electric valve closes;

[0009] A conveyor is provided between the electronic belt scale and the cigarette making machine, and the conveyor is used to convey the fragments measured by the electronic belt scale into the cigarette making machine.

[0010] Optionally, it further includes:

[0011] A collection unit is provided upstream of the tobacco material inlet along the conveying direction of the tobacco material. The collection unit is used to identify the type of the tobacco material entering the separation mechanism;

[0012] A database stores process parameters corresponding to the types of each tobacco material internally. The process parameters include a preset addition value, and the preset addition value is the preset weight of the fragments output from the bunker to the cigarette making machine;

[0013] A control system is electrically connected to the electric valve, the electronic belt scale, the collection unit and the database. The control system can retrieve the preset addition value corresponding to the type of the tobacco material from the database according to the type of the tobacco material and control the opening of the electric valve; when the weight of the fragments measured by the electronic belt scale reaches the preset addition value, the control system can control the closing of the electric valve.

[0014] Optionally, the separation mechanism includes:

[0015] A vibrating screen, the tobacco material inlet is arranged at the feeding end of the vibrating screen, and both the cut tobacco outlet and the fragment outlet are arranged at the discharging end of the vibrating screen;

[0016] A hopper is arranged below the fragment outlet. The fragments output from the fragment outlet can fall into the hopper, and an output pipe is arranged at the bottom of the hopper;

[0017] A discharging pipe is arranged below the output pipe. The upper end of the discharging pipe is the inlet end, and the lower end is the outlet end. The inlet end is communicated with the discharging end of the output pipe. The discharging pipe can rotate around the axis of the output pipe so that the outlet end can move between a first position and a second position; when the outlet end moves to the first position, the outlet end is located above the feeding port of the cigarette making machine, and the fragments output by the discharging pipe can fall into the cigarette making machine; when the outlet end moves to the second position, the outlet end is located above the feeding port of the bunker, and the fragments output by the discharging pipe can fall into the bunker.

[0018] Optionally, the process parameters further include the tobacco material grade of each tobacco material. The control system can compare the tobacco material grade of the fragments in the bunker with the tobacco material grade of the tobacco material in the vibrating screen. When the tobacco material grade of the fragments is higher than or equal to the tobacco material grade of the tobacco material and the preset addition value corresponding to the tobacco material is greater than 0, the control system can control the opening of the electric valve.

[0019] Optionally, the vibrating screen includes:

[0020] The first sieve, on which there are a plurality of first sieve holes. The diameter of the first sieve holes allows debris and tobacco dust to pass through, but does not allow cut tobacco to pass through. The first sieve is used to separate cut tobacco from tobacco materials, and the output end of the first sieve is the cut tobacco outlet;

[0021] The second sieve, which is arranged below the first sieve and is used to receive the debris and tobacco dust passing through the first sieve holes. There are a plurality of second sieve holes on the second sieve. The diameter of the second sieve holes allows tobacco dust to pass through, but does not allow debris to pass through. The second sieve is used to separate debris from tobacco dust, and the output end of the second sieve is the debris outlet.

[0022] Optionally, the feeding pipe includes a connecting section and a moving section that are connected in sequence from top to bottom. The axis of the connecting section forms an angle with the axis of the moving section. The upper end of the connecting section abuts against the lower end of the output pipe. The axis of the connecting section coincides with the axis of the output pipe. The lower end of the connecting section is connected to the upper end of the moving section, and the outlet end is arranged at the lower end of the moving section.

[0023] Optionally, the hopper is funnel-shaped, and a rotating mechanism is arranged between the output pipe and the feeding pipe. The rotating mechanism is used to drive the feeding pipe to rotate around the axis of the output pipe, so as to drive the outlet end to move between a first position and a second position.

[0024] Optionally, the rotating mechanism includes:

[0025] A cylinder, which is arranged on the frame of the vibrating sieve;

[0026] A bearing, which is arranged between the output pipe and the feeding pipe;

[0027] A gear, which is sleeved on the outer circumferential surface of the connecting section and is fixedly connected to the connecting section;

[0028] A rack, which is connected to the driving end of the cylinder, and the rack meshes with the gear. When the driving end of the cylinder moves, it can drive the gear and the feeding pipe to rotate through the rack, so as to drive the outlet end to move between a first position and a second position.

[0029] Optionally, the cylinder is electrically connected to the control system. The process parameters further include the actual debris ratio and the preset debris ratio. The preset debris ratio is the ratio of the weight of debris entering the cigarette making machine to the total weight of cut tobacco and debris entering the cigarette making machine in the cigarette processing technology requirements; the actual debris ratio is the ratio of the weight of debris contained in the tobacco materials entering the separation mechanism to the total weight of cut tobacco and debris contained in the tobacco materials; when the actual debris ratio is less than or equal to the preset debris ratio, the control system can control the operation of the cylinder to move the outlet end to the first position, so that the debris is output into the cigarette making machine; when the actual debris ratio is greater than the preset debris ratio, the control system can control the operation of the cylinder to move the outlet end to the second position, so that the debris is output into the bin.

[0030] Embodiments of the present invention also provide a method for re-incorporation. The method for re-incorporation includes:

[0031] Separating cut tobacco and fragments from tobacco material;

[0032] Outputting the cut tobacco into a cigarette making machine and outputting the fragments into a bin;

[0033] Outputting the fragments from the bin onto an electronic belt scale to measure the weight of the fragments output from the bin;

[0034] If the weight of the fragments is greater than or equal to a preset addition value, the bin stops outputting fragments;

[0035] Conveying the fragments weighed by the electronic belt scale into the cigarette making machine.

[0036] Embodiments of the present invention also provide a method for re-incorporation. The method for re-incorporation further includes:

[0037] Obtaining the type of tobacco material entering the vibrating screen and retrieving the tobacco material grade of this type of tobacco material;

[0038] Obtaining the type of fragments in the bin and retrieving the tobacco material grade of this type of fragments;

[0039] Comparing the tobacco material grades of the tobacco material and the fragments;

[0040] If the tobacco material grade of the fragments is higher than or equal to the tobacco material grade of the tobacco material, weighing fragments equal in weight to the preset addition value and outputting the weighed fragments into the cigarette making machine. Description of the Drawings

[0041] Figure 1 Showing a top view of a re-incorporation device provided by an embodiment of the present invention;

[0042] Figure 2 Showing a structural schematic diagram of a hopper, a discharge pipe and a rotating mechanism provided by an embodiment of the present invention;

[0043] Figure 3 Showing a front view of a bin provided by an embodiment of the present invention;

[0044] Figure 4 Showing a front view of a vibrating screen provided by an embodiment of the present invention;

[0045] Figure 5 Showing a flowchart of a method for re-incorporation provided by an embodiment of the present invention;

[0046] Figure 6 Showing a flowchart of a method for re-incorporation provided by another embodiment of the present invention.

[0047] Reference Signs:

[0048] 1. Separation mechanism, 2. Cut tobacco outlet, 3. Fragment outlet, 4. Silo, 5. Discharge port, 6. Electric valve, 7. Electronic belt weigher, 8. Conveyor, 9. Cigarette making machine, 10. Vibrating screen, 11. Hopper, 12. Output pipe, 13. Feeding pipe, 14. Outlet end, 15. First screen, 16. Second screen, 17. Connection section, 18. Moving section, 19. Rotating mechanism, 20. Cylinder, 21. Gear, 22. Rack, 23. Driving end. Detailed implementation mode

[0049] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiments, this does not mean that the features of this invention are limited to this implementation manner. On the contrary, the purpose of introducing the invention in conjunction with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, many specific details will be included in the following description. The present invention can also be implemented without these details. In addition, in order to avoid confusing or obscuring the key points of the present invention, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0050] It should be noted that in this specification, similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0051] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0052] The terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0053] In the description of this embodiment, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0054] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0055] An embodiment of the present invention provides a tobacco shred re-injection device for conveying tobacco shreds to a cigarette making machine 9, as Figure 1 shown. The re-injection device includes a separation mechanism 1, a bunker 4, an electronic belt weigher 7, and a conveyor 8. Among them, the separation mechanism 1 is used to separate tobacco strands and shreds from tobacco material. The separation mechanism 1 includes a tobacco material inlet, a tobacco strand outlet 2, and a shred outlet 3. The tobacco strand outlet 2 is located above the inlet of the cigarette making machine 9, and the tobacco strands output from the tobacco strand outlet 2 can fall into the cigarette making machine 9. The bunker 4 is used to receive the shreds output from the shred outlet 3 and cache the shreds. As Figure 3 shown, the bunker 4 is provided with a discharge port 5, and an electric valve 6 is provided on the discharge port 5. The electric valve 6 is used to control the opening and closing of the discharge port 5. The electronic belt weigher 7 is arranged below the discharge port 5. The electronic belt weigher 7 is used to measure the weight of the shreds output from the discharge port 5. When the weight of the shreds reaches a preset addition value, the electric valve 6 closes. Among them, the preset addition value is the weight of the shreds added from the bunker 4 to the cigarette making machine 9 specified in the cigarette production process. The conveyor 8 is arranged between the electronic belt weigher 7 and the cigarette making machine 9. The conveyor 8 is used to convey the shredded tobacco weighed by the electronic belt weigher 7 into the cigarette making machine 9.

[0056] With the above technical solution, the tobacco strands and shreds are separated from the tobacco material by the separation mechanism 1. The tobacco strands can be output into the cigarette making machine 9, and the shreds can be cached in the bunker 4. When adding shreds to the cigarette making machine 9, the electric valve 6 on the bunker 4 is opened, and the shreds are output to the electronic belt weigher 7 for weighing through the electric valve 6. When the shredded tobacco weighed by the electronic belt weigher 7 reaches the preset addition value, the electric valve 6 closes, and the weighed shredded tobacco is conveyed into the cigarette making machine 9 through the conveyor 8 and mixed with the tobacco strands in the cigarette making machine 9. Compared with the prior art in which the shredded tobacco is weighed and re-injected manually, the present invention weighs the shredded tobacco by the electronic belt weigher 7, which is convenient for controlling the amount of re-injected shredded tobacco and improves the re-injection accuracy.

[0057] Further, the re-injection device further includes a collection unit, a database, and a control system. Among them, the collection unit is arranged upstream of the tobacco material inlet along the conveying direction of the tobacco material. The collection unit is used to identify the type of the tobacco material entering the separation mechanism 1. Specifically, the collection unit can be a QR code reader. A QR code is provided on the package of the tobacco material, and the QR code contains information related to the type of the tobacco material. The collection unit identifies the type of the tobacco material by reading the QR code. A packaging removal mechanism is further arranged between the collection unit and the separation mechanism 1. The packaging removal mechanism is used to remove the package of the tobacco material and pour the tobacco material into the tobacco material inlet of the separation mechanism 1. The database stores process parameters corresponding to various types of tobacco materials internally. The process parameters include a preset addition value. The control system is electrically connected to the electric valve 6, the electronic belt scale 7, the collection unit, and the database. The control system can receive the type of the tobacco material output by the collection unit, retrieve the preset addition value corresponding to the type of the tobacco material from the database according to the type of the tobacco material, and control the opening of the electric valve 6. When the weight of the fragments measured by the electronic belt scale 7 reaches the preset addition value, the control system can control the electric valve 6 to close to stop outputting fragments to the electronic belt scale 7. Compared with manually weighing a fixed weight of fragments, the control system controls the opening and closing of the electric valve 6 according to the process parameters and the weighing result of the electronic belt scale 7, which can accurately and quickly obtain a fixed weight of fragments and improve work efficiency.

[0058] Further, as Figure 1 shown, the separation mechanism 1 includes a vibrating screen 10, a blanking hopper 11, and a discharge pipe 13. The tobacco material inlet is arranged at the feeding end of the vibrating screen 10. Both the cut tobacco outlet 2 and the fragment outlet 3 are arranged at the discharging end of the vibrating screen 10. The blanking hopper 11 is arranged below the fragment outlet 3. The fragments output from the fragment outlet 3 can fall into the blanking hopper 11. The blanking hopper 11 is funnel-shaped, and an output pipe 12 is arranged at the bottom of the blanking hopper 11. The discharge pipe 13 is arranged below the blanking hopper 11. The upper end of the discharge pipe 13 is the inlet end, and the lower end is the outlet end 14. The inlet end is communicated with the discharging end of the output pipe 12. The discharge pipe 13 can rotate around the axis of the output pipe 12 so that the outlet end 14 can move between a first position and a second position. Specifically, a rotating mechanism 19 is arranged between the output pipe 12 and the discharge pipe 13, and the rotating mechanism 19 is electrically connected to the control system. The control system can control the rotating mechanism 19 to drive the discharge pipe 13 to rotate around the axis of the output pipe 12 to drive the outlet end 14 to move between the first position and the second position. When the outlet end 14 moves to the first position, the outlet end 14 is located above the feeding port of the cigarette making machine 9, and the fragments output from the discharge pipe 13 can fall into the cigarette making machine 9. When the outlet end 14 moves to the second position, the outlet end 14 is located above the feeding port of the storage bin 4, and the fragments output from the discharge pipe 13 can fall into the storage bin 4.

[0059] The control system should control the rotating mechanism 19 to rotate the outlet end 14 to the first position or the second position according to the process parameters of the tobacco material. The process parameters include the preset addition value, the preset fragment ratio, and the actual fragment ratio. Among them, the preset addition value is the weight of the fragments added from the bin 4 to the cigarette machine 9 as specified in the cigarette production process requirements; the preset fragment ratio is the ratio of the weight of the fragments entering the cigarette machine 9 to the total weight of the cut tobacco and fragments entering the cigarette machine 9 in the cigarette processing process requirements; the actual fragment ratio is the ratio of the weight of the fragments contained in the tobacco material entering the separation mechanism 1 to the total weight of the cut tobacco and fragments contained in the tobacco material. According to the different sizes of the preset fragment ratio and the actual fragment ratio, it can be divided into the following situations:

[0060] Situation 1: Preset fragment ratio = 0 and actual fragment ratio > 0

[0061] The production process requirements for high-grade cigarettes require that the fragment content in the cigarettes is 0. When producing high-grade cigarettes, the preset fragment ratio needs to be set to 0. At this time, no fragments need to be added to the cigarette machine 9, and the preset addition value is also 0. When the preset fragment ratio is 0, the control system controls the rotating mechanism 19 to rotate the outlet end 14 to the second position to cache the fragments in the bin 4 to prevent the fragments from entering the cigarette machine 9 and affecting the cigarette quality.

[0062] Situation 2: Preset fragment ratio = 0 and actual fragment ratio = 0

[0063] Compared with Situation 1, when the actual fragment ratio is 0, the separation mechanism 1 only outputs cut tobacco and does not output fragments. At this time, there is no need to cache the fragments in the bin 4. Therefore, when both the preset fragment ratio and the actual fragment ratio are 0, the control system controls the rotating mechanism 19 to rotate the outlet end 14 to the first position.

[0064] Situation 3: Actual fragment ratio > preset fragment ratio > 0

[0065] At this time, the amount of fragments separated by the separation mechanism 1 is greater than the amount of fragments required by the cigarette processing process, and not all the fragments separated by the separation mechanism 1 can be added to the cigarette machine 9. In order to accurately measure the amount of fragments added to the cigarette machine 9, it is necessary to first output the fragments separated by the separation mechanism 1 to the bin 4, and then control the electronic belt scale 7 to measure a fixed weight of fragments according to the preset addition value and convey them to the cigarette machine 9. At this time, the preset addition value is equal to the preset fragment ratio. Therefore, when the actual fragment ratio is greater than the preset fragment ratio, the control system controls the rotating mechanism 19 to rotate the outlet end 14 to the second position to cache the fragments in the bin 4.

[0066] Situation 4: Actual fragment ratio = preset fragment ratio

[0067] At this time, the amount of debris separated by the separation mechanism 1 exactly meets the amount of debris required by the cigarette processing technology. To improve production efficiency, the debris separated by the separation mechanism 1 can be directly output into the cigarette machine 9. Therefore, when the actual debris ratio is equal to the preset debris ratio, the control system controls the rotating mechanism 19 to rotate the outlet end 14 to the first position, so as to directly convey the debris separated by the separation mechanism 1 into the cigarette machine 9, without the need to cache it in the bin 4. In addition, when the actual debris ratio is equal to the preset debris ratio, there is no need to add additional debris into the cigarette machine 9.

[0068] Situation 5: preset debris ratio > actual debris ratio > 0

[0069] At this time, the amount of debris separated by the separation mechanism 1 is insufficient to meet the amount of debris required by the cigarette processing technology, and a certain weight of debris needs to be additionally added into the cigarette machine 9. Therefore, when the actual debris ratio is less than the preset debris ratio, the control system controls the rotating mechanism 19 to rotate the outlet end 14 to the first position, so as to directly output the debris separated by the separation mechanism 1 into the cigarette machine 9. In addition, the bin 4 also needs to add additional debris into the cigarette machine 9, and the weight of the additionally added debris is the preset addition value. At this time, the control system controls the electric valve 6 to open and controls the electronic belt scale 7 to weigh debris with a weight equal to the preset addition value, so as to output the weighed debris into the cigarette machine 9.

[0070] Furthermore, as Figure 1 and Figure 4 shown, the vibrating screen 10 includes a first screen 15 and a second screen 16. Among them, a plurality of first screen holes are provided on the first screen 15, and the diameter of the first screen holes allows debris and tobacco dust to pass through, but does not allow tobacco strands to pass through. The first screen 15 is used to separate tobacco strands from the tobacco material, and the output end of the first screen 15 is the tobacco strand outlet 2. The second screen 16 is arranged below the first screen 15 and is used to receive the debris and tobacco dust passing through the first screen holes. A plurality of second screen holes are provided on the second screen 16, and the diameter of the second screen holes allows tobacco dust to pass through, but does not allow debris to pass through. The second screen 16 is used to separate debris from tobacco dust, and the output end of the second screen 16 is the debris outlet 3. Specifically, the aperture of the first screen holes is 6 mm, and the aperture of the second screen holes is 2 mm. When screening tobacco strands and debris, the tobacco material is conveyed onto the first screen 15 through the tobacco material inlet. The debris and tobacco dust in the tobacco material will pass through the first screen holes and fall onto the second screen 16, and the tobacco strands in the tobacco material will remain on the first screen 15 and be output from the tobacco strand outlet 2. The tobacco dust falling on the second screen 16 will pass through the second screen holes and fall into the recycling box below the vibrating screen 10, and the debris will remain on the second screen and be output from the debris outlet 3.

[0071] Furthermore, as Figure 2As shown in the figure, the discharging pipe 13 includes a connecting section 17 and a moving section 18 which are connected in sequence from top to bottom. The axis of the connecting section 17 forms an angle with the axis of the moving section 18. The upper end of the connecting section 17 abuts against the lower end of the output pipe 12, and the axis of the connecting section 17 coincides with the axis of the output pipe 12. The lower end of the connecting section 17 is connected to the upper end of the moving section 18, and the outlet end 14 is provided at the lower end of the moving section 18. When the discharging pipe 13 rotates around the axis of the output end, the moving section 18 can swing around the axis of the output shaft so that the discharging end moves between the first position and the second position.

[0072] Further, as Figure 2 shown, the rotating mechanism 19 includes a cylinder 20, a bearing, a gear 21 and a rack 22. Among them, the cylinder 20 is provided on the frame of the vibrating screen 10, and the bearing is provided between the output pipe 12 and the discharging pipe 13; the gear 21 is sleeved on the outer circumferential surface of the connecting section 17 and is fixedly connected to the connecting section 17; the rack 22 is connected to the driving end 23 of the cylinder 20, and the rack 22 meshes with the gear 21. The cylinder 20 is electrically connected to the control system. The control system can control the operation of the cylinder 20. When the driving end 23 of the cylinder 20 moves, it can drive the gear 21 and the discharging pipe 13 to rotate through the rack 22, so as to drive the outlet end 14 to move between the first position and the second position.

[0073] Further, the process parameters also include the tobacco material grades of each tobacco material. The higher the tobacco material grade, the higher the quality of the tobacco material. The control system can compare the tobacco material grade of the fragments in the silo 4 with the tobacco material grade of the tobacco material in the vibrating screen 10. When the tobacco material grade of the fragments is higher than or equal to the tobacco material grade of the tobacco material, and the preset addition value corresponding to the tobacco material is greater than 0, the control system can control the electric valve 6 to open, so as to output the fragments from the silo 4 and transport the fragments into the cigarette making machine 9, so as to improve the utilization rate of the fragments and reduce resource waste. Specifically, when the tobacco material grade of the fragments in the silo 4 is higher than the grade of the tobacco material in the vibrating screen 10, adding the fragments in the silo 4 into the cigarette making machine 9 can also improve the quality level of medium and low-grade cigarettes.

[0074] An embodiment of the present invention also provides a blending method, as Figure 5 shown, for controlling the blending device of any one of the foregoing, the blending method includes:

[0075] Providing tobacco material, and separating tobacco leaves and fragments from the tobacco material;

[0076] Outputting the tobacco leaves into the cigarette making machine 9, and outputting the fragments into the silo 4 for buffering;

[0077] Outputting the fragments from the silo 4 onto the electronic belt scale 7 to measure the weight of the fragments output from the silo 4;

[0078] If the weight of the fragments is greater than or equal to the preset addition value, the silo 4 stops outputting fragments;

[0079] Convey the debris on the electronic belt scale 7 into the cigarette making machine 9.

[0080] An embodiment of the present invention also provides a method for recycling, as Figure 6 shown, for a recycling device, the method for recycling further includes:

[0081] Obtain the type of tobacco material entering the separation mechanism 1 and retrieve the tobacco material grade of this type of tobacco material;

[0082] Obtain the type of debris in the bin 4 and retrieve the tobacco material grade of this type of debris;

[0083] Compare the tobacco material grade of the tobacco material and the debris;

[0084] If the tobacco material grade of the debris is equal to or higher than that of the tobacco material, weigh a fixed weight of debris according to a preset addition value and output the weighed debris into the cigarette making machine 9.

[0085] Although the present invention has been illustrated and described by referring to certain preferred embodiments of the present invention, those of ordinary skill in the art should understand that the above content is a further detailed description of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A tobacco shred reblending device for conveying tobacco shreds to a cigarette making machine, characterized in that, The recycling device includes: A separation mechanism for separating tobacco shreds and the fragments from the tobacco material. The separation mechanism includes a tobacco material inlet, a tobacco shred outlet, and a fragment outlet. The tobacco shred outlet is located above the inlet of the cigarette making machine, and the tobacco shreds output from the tobacco shred outlet can fall into the cigarette making machine. A bin for receiving the fragments output from the fragment outlet and caching the fragments. The bin is provided with a discharge port, and an electric valve is provided on the discharge port. The electric valve is used to control the opening and closing of the discharge port. An electronic belt scale is arranged below the discharge port. The electronic belt scale is used to measure the weight of the fragments output from the discharge port. When the weight of the fragments reaches a preset addition value, the electric valve closes. A conveyor is arranged between the electronic belt scale and the cigarette making machine. The conveyor is used to convey the fragments measured by the electronic belt scale into the cigarette making machine.

2. The backmixing device according to claim 1, characterized in that, It further includes: An acquisition unit is arranged upstream of the tobacco material inlet along the conveying direction of the tobacco material. The acquisition unit is used to identify the type of the tobacco material entering the separation mechanism. A database stores process parameters corresponding to the types of each tobacco material internally. The process parameters include the preset addition value, and the preset addition value is the preset weight of the fragments output from the bin to the cigarette making machine. A control system is electrically connected to the electric valve, the electronic belt scale, the acquisition unit, and the database. The control system can retrieve the preset addition value corresponding to the type of the tobacco material from the database according to the type of the tobacco material and control the electric valve to open. When the weight of the fragments measured by the electronic belt scale reaches the preset addition value, the control system can control the electric valve to close.

3. The backmixing device according to claim 2, characterized in that, The separation mechanism includes: A vibrating screen. The tobacco material inlet is arranged at the feeding end of the vibrating screen, and both the tobacco shred outlet and the fragment outlet are arranged at the discharging end of the vibrating screen. A hopper is arranged below the fragment outlet. The fragments output from the fragment outlet can fall into the hopper, and an output pipe is arranged at the bottom of the hopper. A discharging pipe is arranged below the output pipe. The upper end of the discharging pipe is the inlet end, and the lower end is the outlet end. The inlet end is communicated with the discharging end of the output pipe. The discharging pipe can rotate around the axis of the output pipe so that the outlet end can move between a first position and a second position. When the outlet end moves to the first position, the outlet end is located above the inlet of the cigarette making machine, and the fragments output from the discharging pipe can fall into the cigarette making machine. When the outlet end moves to the second position, the outlet end is located above the inlet of the bin, and the fragments output from the discharging pipe can fall into the bin.

4. The recycling device according to claim 3, characterized in that, The process parameters further include the tobacco material grades of the respective tobacco materials. The control system can compare the tobacco material grade of the debris in the bin with the tobacco material grade of the tobacco material in the vibrating screen. When the tobacco material grade of the debris is higher than or equal to the tobacco material grade of the tobacco material, and the preset addition value corresponding to the tobacco material is greater than 0, the control system can control the electric valve to open.

5. The recycling device according to claim 3, characterized in that, The vibrating screen includes: A first screen mesh provided with a plurality of first screen holes. The diameter of the first screen holes allows the debris and tobacco dust to pass through, and does not allow the cut tobacco to pass through. The first screen mesh is used to separate the cut tobacco from the tobacco material, and the output end of the first screen mesh is the cut tobacco outlet; A second screen mesh disposed below the first screen mesh for receiving the debris and the tobacco dust passing through the first screen holes. The second screen mesh is provided with a plurality of second screen holes. The diameter of the second screen holes allows the tobacco dust to pass through, and does not allow the debris to pass through. The second screen mesh is used to separate the debris from the tobacco dust, and the output end of the second screen mesh is the debris outlet.

6. The backmixing device according to claim 3, characterized in that The discharge pipe includes a connecting section and a moving section connected in sequence from top to bottom. The axis of the connecting section forms an angle with the axis of the moving section. The upper end of the connecting section abuts against the lower end of the output pipe, the axis of the connecting section coincides with the axis of the output pipe, the lower end of the connecting section is connected to the upper end of the moving section, and the outlet end is provided at the lower end of the moving section.

7. The backmixing device according to claim 5, characterized in that The hopper is funnel-shaped, and a rotating mechanism is provided between the output pipe and the discharge pipe. The rotating mechanism is used to drive the discharge pipe to rotate around the axis of the output pipe, so as to drive the outlet end to move between the first position and the second position.

8. The backmixing device according to claim 6, wherein The rotating mechanism includes: A cylinder disposed on the frame of the vibrating screen; A bearing disposed between the output pipe and the discharge pipe; A gear sleeved on the outer circumferential surface of the connecting section and fixedly connected to the connecting section; A rack connected to the driving end of the cylinder, and the rack meshes with the gear. When the driving end of the cylinder moves, it can drive the gear and the discharge pipe to rotate through the rack, so as to drive the outlet end to move between the first position and the second position.

9. The backmixing device according to claim 8, characterized in that, The cylinder is electrically connected to the control system. The process parameters further include the actual debris ratio and the preset debris ratio. The preset debris ratio is the ratio of the weight of the debris entering the cigarette making machine required by the cigarette processing technology to the total weight of the cut tobacco and debris entering the cigarette making machine; The actual debris ratio is the ratio of the weight of the debris contained in the tobacco material entering the separation mechanism to the total weight of the cut tobacco and debris contained in the tobacco material. When the actual debris ratio is less than or equal to the preset debris ratio, the control system can control the cylinder to operate and move the outlet end to the first position, so that the debris is output into the cigarette making machine; when the actual debris ratio is greater than the preset debris ratio, the control system can control the cylinder to operate and move the outlet end to the second position, so that the debris is output into the bin.

10. A backmixing method for the backmixing device according to any one of claims 1 to 9, characterized in that, The re-incorporation method includes: Separating cut tobacco and fragments from tobacco material; Outputting the cut tobacco into a cigarette making machine and outputting the fragments into a bin; Outputting the fragments from the bin onto an electronic belt scale to measure the weight of the fragments output from the bin; If the weight of the fragments is greater than or equal to the preset addition value, the bin stops outputting the fragments; Conveying the fragments weighed by the electronic belt scale into the cigarette making machine.

11. A backmixing method of the backmixing device according to claim 4, characterized in that, The re-incorporation method further includes: Obtaining the type of the tobacco material entering the vibrating screen and retrieving the tobacco material grade of the tobacco material of this type; Obtaining the type of the fragments in the bin and retrieving the tobacco material grade of the fragments of this type; Comparing the tobacco material grades of the tobacco material and the fragments; If the tobacco material grade of the fragments is higher than or equal to the tobacco material grade of the tobacco material, weighing the fragments equal to the weight of the preset addition value and outputting the weighed fragments into the cigarette making machine.

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