A system and method for improving the quality of post-harvest tobacco leaf

Abstract

The application relates to a system and method for improving the quality of selected tobacco strips, and relates to the field of tobacco processing technology, which comprises a quantitative feeding mechanism, a heavy impurity sorting mechanism, a silt screening mechanism, a hemp silk removing mechanism, a light impurity removing mechanism, a spectral impurity removing mechanism, a broken material removing mechanism and a grading mechanism, and adjacent mechanisms are connected through a conveying belt mechanism; the quantitative feeding mechanism is arranged at a feeding port of the heavy impurity sorting mechanism, and the quantitative feeding mechanism is used for quantitatively feeding the heavy impurity sorting mechanism; the heavy impurity sorting mechanism is used for removing heavy impurities; the silt screening mechanism is used for removing silt; the hemp silk removing mechanism is used for removing hemp silk structures; the light impurity removing mechanism is used for removing light impurities; the spectral impurity removing mechanism is used for removing non-smoke substances and green smoke; the broken material removing mechanism is used for removing broken tobacco strips; and the grading mechanism is used for grading the selected tobacco strips. The application has the effect of solving the problem of tobacco strip waste.

Description

Technical Field

[0001] This application relates to the field of tobacco processing technology, and in particular to a system and method for improving the quality of selected tobacco sheets. Background Technology

[0002] Tobacco, as an important economic crop, occupies a very important position in national economic development. In order to process and produce cigarettes of different grades, the raw flue-cured tobacco leaves need to be graded before processing.

[0003] After traditional tobacco leaf screening, the selected tobacco leaves are usually automatically downgraded or returned to the previous grade. However, there are still many high-quality tobacco leaves among these leaves. These high-quality tobacco leaves can usually be mixed with tobacco leaves of a higher grade for cigarette production, which can improve the utilization rate of tobacco without affecting the quality of cigarettes.

[0004] Currently, there is no system on the market for reprocessing selected tobacco sheets. Usually, high-quality tobacco sheets are manually screened out and stored. The remaining tobacco sheets that meet the grade standards will enter the next packaging process, while the rejected tobacco sheets will wait for further processing. This results in some of the selected tobacco sheets being screened out due to minor defects or other non-substantial issues. Since these tobacco sheets are automatically downgraded to the next grade, a lot of high-quality tobacco sheets are wasted. Summary of the Invention

[0005] To address the problem of tobacco waste, this application provides a system and method for improving the quality of selected tobacco.

[0006] The system for improving the quality of selected tobacco leaves provided in this application adopts the following technical solution:

[0007] A system for improving the quality of selected tobacco flakes includes a quantitative feeding mechanism, a mud and sand screening mechanism, a heavy impurity sorting mechanism, a hemp fiber removal mechanism, a light impurity removal mechanism, a spectral impurity removal mechanism, a fragment removal mechanism, and a grading mechanism. Adjacent mechanisms are connected by a conveyor belt mechanism.

[0008] The quantitative feeding mechanism is located at the inlet of the heavy impurity sorting mechanism, and the quantitative feeding mechanism is used to quantitatively feed material onto the heavy impurity sorting mechanism;

[0009] The heavy impurity sorting mechanism is used to remove heavy impurities mixed in with the sorted tobacco sheets;

[0010] The mud and sand screening mechanism is used to remove mud and sand from the selected tobacco sheets after the heavy impurities have been removed by the heavy impurities sorting mechanism.

[0011] The hemp fiber removal mechanism is used to remove the hemp fiber structure in the selected tobacco sheets after the mud and sand have been removed by the mud and sand screening mechanism.

[0012] The lightweight impurity removal mechanism is used to remove lightweight impurities from the selected tobacco sheets after the hemp fiber removal mechanism has removed the hemp fiber structure.

[0013] The spectral impurity removal mechanism is used to remove non-smoke substances and blue smoke from the selected tobacco sheets after the light impurity removal mechanism has removed the light impurities.

[0014] The fragment removal mechanism is used to remove tobacco fragments from the selected tobacco sheets after the spectral impurity removal mechanism has removed non-smoke substances and green smoke.

[0015] The grading mechanism is used to grade the selected tobacco sheets after the fragment removal mechanism has removed the tobacco sheet fragments.

[0016] By adopting the above technical solution, the selected tobacco sheets are fed into a quantitative feeding mechanism, which then quantitatively feeds the tobacco sheets into a heavy impurity sorting mechanism for batch processing. The heavy impurity sorting mechanism removes heavy impurities from the tobacco sheets. The tobacco sheets after heavy impurity removal are transported to a silt screening mechanism to remove the silt mixed in with the tobacco sheets. The silt-removed tobacco sheets are then conveyed to a hemp fiber removal mechanism, where hemp fiber is removed by a hemp fiber removal roller. The tobacco sheets after hemp fiber removal are then... The tobacco sheets are transported to the light impurity removal mechanism, where light impurities mixed in with the tobacco are removed. The tobacco sheets after removing light impurities are then transported to the spectral impurity removal mechanism, where non-smoking substances and wispy smoke are removed using a spectral device. The tobacco sheets after removing non-smoking substances and wispy smoke are then transported to the scrap removal mechanism, where tobacco scraps are removed. The tobacco sheets after removing tobacco scraps are then transported to the grading mechanism, where the selected tobacco sheets are graded in batches, and the selected tobacco sheets are processed accordingly based on the grading results.

[0017] It can improve the quality of selected tobacco leaves through a series of processes, remove various impurities mixed in with the selected tobacco leaves, improve the quality of the selected tobacco leaves, avoid affecting the re-grading of the selected tobacco leaves, and facilitate the screening out of the higher quality tobacco leaves and re-blending these tobacco leaves, which helps to reduce the waste of tobacco leaves and improve the utilization rate of tobacco leaves.

[0018] In one specific implementation, the quantitative feeding mechanism includes a feeding bracket, a feeding bin, a cover plate, and a driving mechanism. The feeding bin is disposed on the feeding bracket, the driving mechanism is disposed on the feeding bracket, and the cover plate is drivenly connected to the driving mechanism and slidably connected to the discharge port of the feeding bin.

[0019] By adopting the above technical solution, through the setting of a feeding bracket, a feeding bin, a cover plate, and a drive mechanism, materials are fed into the feeding bin set on the feeding bracket, and the drive mechanism drives the cover plate to move, so that the selected tobacco sheets stored in the feeding bin are put into the conveyor belt in batches and transported to the next processing station for batch processing. Processing the selected tobacco sheets batch by batch enables batch grading and judgment of the selected tobacco sheets, which helps to improve the accuracy of grading and judgment.

[0020] In one specific implementation, the driving mechanism includes a drive motor, a rotating rod, a lever, and a stop lever. The drive motor is mounted on the feeding hopper. The rotating rod is fixedly connected to the output shaft of the drive motor. A lever block is mounted on the rotating rod. The lever is rotatably connected to the feeding bracket. A torsion spring for resetting the lever is provided between the feeding hopper and the lever. The stop lever is located adjacent to the lever and cooperates with the torsion spring to limit the position of the lever. A stop block and a cooperating rod are provided on the cover plate. The rotating rod can move the cooperating rod to release the cover plate from blocking the feeding hopper. The lever, driven by the rotating rod, can move the stop block to block the cover plate from blocking the feeding hopper.

[0021] By employing the above technical solution, utilizing the drive motor, rotating rod, lever, and stop bar, when the cover plate is in the blocked feeding hopper state, the drive motor drives the rotating rod to rotate. The lever, mounted on the rotating rod, strikes the mating rod, causing the cover plate to slide relative to the feeding hopper, thus opening the feeding hopper's outlet for material feeding. After feeding is completed, the rotating rod continues to rotate, striking one end of the lever, causing the lever to rotate relative to the feeding hopper. The other end of the lever then strikes the stop bar on the cover plate, causing the cover plate to move relative to the feeding hopper, blocking the feeding hopper's outlet. The lever returns to its original position under the action of a torsion spring, and the stop bar limits the position of the lever.

[0022] By coordinating the drive motor, rotating rod, lever, and stop lever, the speed of the drive motor can be controlled, and the periodic opening and closing of the feeding hopper door can be controlled, thereby automating the feeding process and reducing the time wasted due to manual feeding or the short interval between feedings.

[0023] In one specific implementation scheme, the spectral impurity removal mechanism includes a spectral removal box, an optical recognition structure, and a removal structure. The optical recognition structure includes a spectral light source and a spectral camera. Several spectral light sources are provided. The spectral light sources are located in the spectral removal box and are oriented towards the selected tobacco sheet to be detected. The spectral camera is located in the spectral storage box and is oriented towards the selected tobacco sheet to be detected.

[0024] By adopting the above technical solution, utilizing optical recognition structure and material removal device, increasing the light in the spectral removal box through spectral light source, performing spectral judgment through spectral camera, and then removing non-smoke substances and green smoke mixed in the selected tobacco sheets through the discharge structure, it is beneficial to improve the quality of the selected tobacco sheets.

[0025] In one specific implementation, the material removal structure includes a blower and a waste bin. Waste troughs are provided on both side walls of the conveyor belt mechanism below the spectral material removal bin. The blower is positioned corresponding to the waste troughs, and the waste bin is connected to the waste troughs.

[0026] By adopting the above technical solution, and utilizing the waste trough, blower, and waste bin, the blower blows air onto the selected tobacco sheets mixed with non-smoke substances and blue smoke, causing it to pass through the waste trough and fall into the waste bin, where it is then processed. This facilitates the rapid processing of selected tobacco sheets mixed with non-smoke substances and blue smoke.

[0027] In one specific implementation scheme, the grading mechanism includes a paving device, a grading device, and a grading conveying device. The paving device is mounted on a conveyor belt mechanism. The grading device includes a grading box, a grading light source, and a grading camera. The grading box is positioned above the conveyor belt. Several grading light sources are provided, and the grading light sources are positioned facing the grading conveyor belt structure. The grading camera is positioned inside the grading box and facing the conveyor belt mechanism. The grading conveying device is located at one end of the discharge port of the grading device.

[0028] By adopting the above technical solution, and utilizing the paving device, grading device, and grading conveying device, the paving device can spread the stacked selected tobacco sheets thinly onto the conveyor belt mechanism, the grading device can judge and grade the thinned selected tobacco sheets, and the grading conveying device can transport the graded selected tobacco sheets separately according to the grading results. This helps to avoid the waste of high-quality tobacco sheets in the selected tobacco sheets, thereby improving the utilization rate of high-quality selected tobacco sheets.

[0029] In one specific implementation scheme, a conveying device is also included. The conveying device includes a first vibrating screen and a material outlet sealing device. The first vibrating screen includes a vibrating base, a vibrating chamber, elastic plates, a connecting rod, and a rocker arm. Several elastic plates are provided. One end of the elastic plate is connected to the vibrating base, and the other end of the elastic plate is connected to the vibrating chamber. A vibrating motor is provided on the vibrating base. The output shaft of the vibrating motor is connected to one end of the connecting rod, and the other end of the connecting rod is connected to one end of the rocker arm. The other end of the rocker arm is connected to the vibrating chamber. The vibrating chamber is provided with a primary material outlet, a secondary material outlet, and a tertiary material outlet. Several material outlet sealing devices are provided, and the material outlet sealing devices are located at the secondary material outlet and the tertiary material outlet.

[0030] By adopting the above technical solution, and utilizing the setup of a vibrating seat, vibrating chamber, elastic sheet, connecting rod, rocker arm, and material inlet sealing device, the vibrating motor drives the connecting rod to rotate, which in turn drives the rocker arm to rotate, causing the elastic sheet to deform. This causes the vibrating chamber to vibrate relative to the vibrating seat. The vibration of the vibrating chamber drives the graded and selected tobacco flakes, and according to the grade of the selected tobacco flakes, they are conveyed to the primary, secondary, or tertiary material inlet. The material inlet sealing device controls the opening and closing of the secondary and tertiary material inlets to process the selected tobacco flakes. This facilitates the separation of high-quality and low-quality tobacco flakes from the selected tobacco flakes, thereby improving the quality of the selected tobacco flakes and enabling the high-quality selected tobacco flakes to be screened out for re-blending.

[0031] In one specific implementation scheme, the material outlet sealing device includes a mounting frame, a sealing cylinder, a sealing bracket, a mounting rod, a sealing plate, and a limiting plate. The mounting frame is mounted on the vibrating chamber, the sealing cylinder is mounted on the mounting frame, the mounting frame has a mounting bracket groove, and several pulleys are rotatably connected to the sealing bracket. The pulleys are located in the mounting bracket groove and can roll relative to the mounting bracket groove. The sealing bracket is connected to the piston rod of the sealing cylinder. One end of the mounting rod is rotatably connected to the sealing bracket, and the other end of the mounting rod is hinged to the sealing plate. The sealing plate is located at the secondary or tertiary material outlet. The limiting plate is mounted on the vibrating chamber, the limiting plate has a limiting groove, and the sealing plate has a limiting rod. When the sealing plate seals the material outlet, the limiting rod is located in the limiting groove.

[0032] By adopting the above technical solution, using the mounting frame, sealing cylinder, sealing bracket, mounting rod, sealing plate, and limiting plate, when the sealing plate blocks the material inlet, the sealing cylinder drives the sealing bracket to move. The rollers on the sealing bracket roll relative to the mounting frame, thereby moving the sealing plate connected to the sealing bracket via the mounting rod. This causes the limiting rod to slide out from the limiting groove on the limiting plate, thus releasing the sealing plate from the material inlet and allowing the graded tobacco sheets to enter the corresponding material inlet. When it is necessary to seal the material inlet again, the limiting rod will slide in and engage in the limiting groove, limiting the position of the sealing plate. This helps to improve the sealing effect of the material inlet, thereby enabling the grading of the selected tobacco sheets.

[0033] In one specific implementation, the paving device includes a paving motor and a paving roller. The paving motor is mounted on the conveyor belt mechanism, and the paving roller is connected to the output shaft of the paving motor. The paving roller is provided with multiple hooks.

[0034] By adopting the above technical solution, and utilizing the setting of the spreading motor and spreading roller, the spreading motor drives the spreading roller to rotate, which in turn drives the hook to rotate. The hook then spreads the stacked selected tobacco flakes thinner, thereby improving the accuracy of the grading of the selected tobacco flakes.

[0035] This application also provides a method for improving the quality of selected tobacco leaves, employing the following technical solution: The system for improving the quality of selected tobacco leaves using the method of this application includes the following steps:

[0036] S10: Collect the selected tobacco sheets into the warehouse;

[0037] S20: Quantitatively feed selected tobacco sheets into the device;

[0038] S30: Separate heavy impurities from the selected tobacco sheets;

[0039] S40: Sift out the mud and sand from the selected tobacco sheets;

[0040] S50: Remove the hemp fiber structure from the selected tobacco sheet;

[0041] S60: Remove non-smoke substances and wispy smoke from the selected tobacco sheets;

[0042] S70: Remove tobacco fragments from the selected tobacco sheets;

[0043] S80: The selected tobacco sheets are sorted into Grade 1 tobacco sheets, Grade 2 tobacco sheets and Grade 3 tobacco sheets;

[0044] S90: Quantitatively re-blend the primary-grade selected tobacco leaves, transport the secondary-grade selected tobacco leaves to the next stage of processing, and collect and clean the tertiary-grade selected tobacco leaves.

[0045] In summary, this application includes at least one of the following beneficial technical effects:

[0046] 1. It can improve the quality of selected tobacco leaves through a series of processes, remove various impurities mixed in with the selected tobacco leaves, improve the quality of the selected tobacco leaves, avoid affecting the re-grading of the selected tobacco leaves, and facilitate the screening out of the higher quality tobacco leaves in the selected tobacco leaves and re-blending these tobacco leaves, which helps to reduce the waste of tobacco leaves and improve the utilization rate of tobacco leaves.

[0047] 2. By utilizing an optical recognition structure and a material removal device, the light in the spectral removal box is increased by a spectral light source, spectral judgment is performed by a spectral camera, and then the non-smoke substances and green smoke mixed in the selected tobacco sheets are removed by the discharge structure, which helps to improve the quality of the selected tobacco sheets.

[0048] 3. By utilizing the setup of a vibrating seat, vibrating chamber, elastic sheet, connecting rod, rocker arm, and material inlet sealing device, the vibrating motor drives the connecting rod to rotate, which in turn drives the rocker arm to rotate, causing the elastic sheet to deform. This causes the vibrating chamber to vibrate relative to the vibrating seat. The vibration of the vibrating chamber drives the graded and selected tobacco flakes, and according to the grade of the selected tobacco flakes, they are conveyed to the primary, secondary, or tertiary material inlets. The material inlet sealing device controls the opening and closing of the secondary and tertiary material inlets, processing the selected tobacco flakes. This facilitates the separation of high-quality and low-quality tobacco flakes, thereby improving the quality of the selected tobacco flakes and enabling the high-quality selected tobacco flakes to be screened out for re-blending. Attached Figure Description

[0049] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0050] Figure 2 for Figure 1 A magnified view of part A in the middle.

[0051] Figure 3 for Figure 1 A magnified view of part B in the middle section.

[0052] Figure 4 for Figure 1 A magnified view of part C in the middle.

[0053] Figure 5 This is a cross-sectional view illustrating the connection between the spectral purification mechanism and the conveyor belt mechanism in an embodiment of this application.

[0054] Figure 6 This is a cross-sectional view illustrating the connection between the grading device and the conveyor belt mechanism in the embodiments of this application.

[0055] Explanation of reference numerals in the attached drawings: 1. Quantitative feeding mechanism; 2. Heavy impurity sorting mechanism; 3. Sand and mud screening mechanism; 4. Hemp fiber removal mechanism; 5. Light impurity removal mechanism; 6. Spectral impurity removal mechanism; 61. Spectral material removal box; 62. Optical recognition structure; 621. Spectral light source; 622. Spectral camera; 623. Spectral cylinder; 63. Material removal structure; 631. Blower; 632. Waste bin; 7. Crushed material removal mechanism; 8. Grading mechanism; 81. Spreading device; 811. Spreading motor; 812. Spreading roller; 813. Hook; 82. Grading device; 821. Grading box; 822. Grading light source; 823. Grading camera; 824. Grading cylinder; 83. Grading conveying device; 831. First vibrating screen 8311, Vibrating seat; 8312, Vibrating chamber; 8313, Elastic sheet; 8314, Connecting rod; 8315, Rocker arm; 832, Material outlet sealing device; 8321, Mounting frame; 8322, Sealing cylinder; 8323, Sealing frame; 8324, Mounting rod; 8325, Sealing plate; 8326, Limiting rod; 8327, Limiting plate; 9, Conveyor belt mechanism; 10, Vibrating motor; 11, Feeding bracket; 12, Feeding bin; 13, Drive mechanism; 131, Rotating rod; 1311, Pulley block; 132, Pulley rod; 133, Stop bar; 134, Torsion spring; 14, Cover plate; 141, Stop block; 142, Matching rod; 15, Guide plate; 16, Primary material outlet; 17, Secondary material outlet; 18, Tertiary material outlet. Detailed Implementation

[0056] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0057] This application discloses a system for improving the quality of selected tobacco sheets.

[0058] like Figure 1As shown, the system for improving the quality of selected tobacco flakes includes a quantitative feeding mechanism 1, a heavy impurity sorting mechanism 2, a mud and sand screening mechanism 3, a hemp fiber removal mechanism 4, a light impurity rejection mechanism 5, a spectral impurity removal mechanism 6, a fragment rejection mechanism 7, a grading mechanism 8, and a conveyor belt mechanism 9. The quantitative feeding mechanism 1, heavy impurity sorting mechanism 2, mud and sand screening mechanism 3, hemp fiber removal mechanism 4, light impurity rejection mechanism 5, spectral impurity removal mechanism 6, fragment rejection mechanism 7, and grading mechanism 8 are arranged sequentially and connected in pairs via the conveyor belt mechanism 9. The heavy impurity sorting mechanism 2 can use a common gravity air separation mechanism to separate heavy impurities. The hemp fiber removal mechanism 4 can use a common cloth-adhesive hemp fiber removal mechanism. The light impurity rejection mechanism 5 can use a common electrostatic impurity removal mechanism. The conveyor belt mechanism 9 can use a common conveyor belt.

[0059] like Figure 2 As shown, the quantitative feeding mechanism 1 includes a feeding support 11, a feeding bin 12, a drive mechanism 13, and a cover plate 14. The feeding support 11 is mounted on the conveyor belt mechanism 9 and is composed of several support rods. The feeding bin 12 is mounted on the feeding support 11 and is equipped with a slide rail. The cover plate 14 is slidably connected within the slide rail. The drive mechanism 13 includes a drive motor, a rotating rod 131, a lever 132, and a stop rod 133. The drive motor is mounted on the feeding bin 12. The rotating rod 131 is connected to the output shaft of the drive motor. A lever 1311 is mounted on the rotating rod 131. The lever 1311 can be configured as a columnar lever 1311. The lever 132 is rotatably connected to the adjacent rotating rod 131. A torsion spring 134 is provided on the feeding bin 12 of 31 and between the feeding bin 12 and the lever 132. One end of the torsion spring 134 is connected to the lever 132, and the other end of the lever 132 is connected to the feeding bin 12. A stop bar 133 is provided on the feeding bin 12 near the lever 132. The stop bar 133 and the torsion spring 134 cooperate to limit the lever 132. The lever 132 is preferably set as a "V" shaped lever. The lengths of the levers on both sides of the connection point between the lever 132 and the feeding bin 12 are not the same. A stop block 141 and a cooperating rod 142 are provided on the cover plate 14. The stop block 141 is set to correspond to the lever block 1311 set on the rotating rod 131, and the cooperating rod 142 is set to correspond to the lever 132.

[0060] When the cover plate 14 is in the state of blocking the feeding hopper 12, the drive motor drives the rotating rod 131 to rotate. The paddle block 1311 set on the rotating rod 131 strikes the cooperating rod 142, thereby causing the cover plate 14 to slide relative to the feeding hopper 12, opening the discharge port of the feeding hopper 12 for feeding. After the feeding is completed, the rotating rod 131 continues to rotate, striking one end of the paddle rod 132, causing the paddle rod 132 to rotate relative to the feeding hopper 12. This causes the other end of the paddle rod 132 to strike the stop block 141 set on the cover plate 14, moving the cover plate 14 relative to the feeding hopper 12 and blocking the discharge port of the feeding hopper 12. The paddle rod 132 is reset under the action of the torsion spring 134, and the position of the paddle rod 132 is limited by the stop rod 133. The frequency of quantitative feeding can be controlled by adjusting the speed of the drive motor.

[0061] like Figure 1 and Figure 5 As shown, the spectral impurity removal mechanism 6 includes a spectral removal box 61, an optical recognition structure 62, and a removal structure 63. The spectral removal box 61 is mounted on the conveyor belt mechanism 9, with an opening at its lower end. The optical recognition structure 62 includes a spectral light source 621 and a spectral camera 622. The spectral light source 621 can be an LED light source, and there are two spectral light sources 621, which are respectively positioned at different locations within the spectral removal box 61. The spectral camera 622 is mounted on the side wall of the spectral removal box 61 between the two spectral light sources 621. A spectral cylinder 623 is installed inside the spectral removal box 61, and the spectral camera 622 is connected to the piston rod of the spectral cylinder 623. The spectral camera 622 can be a linear array camera, and the corresponding conveyor belt background color is preferably blue or red. The material removal structure 63 includes a blower 631 and a waste bin 632. Waste troughs are provided on both sides of the conveyor belt mechanism 9 below the spectral material removal bin 61. The air outlet of the blower 631 is connected to one side of the waste trough, and the waste bin 632 is connected to the other side of the waste trough.

[0062] The light in the spectral removal box 61 is increased by the spectral light source 621, the image information of the selected tobacco sheet is collected by the spectral camera 622, and the processor determines whether there are non-smoke substances and smoke in the selected tobacco sheet. If so, the selected tobacco sheet mixed with smoke and non-smoke substances is blown into the waste box 632 by the blower 631 for further processing.

[0063] like Figure 3 and Figure 6As shown, the grading mechanism 8 includes a paving device 81, a grading device 82, and a grading conveying device 83. The paving device 81 includes a spreading motor 811 and a spreading roller 812. The spreading motor 811 is mounted on the conveyor belt mechanism 9. The spreading roller 812 is connected to the output shaft of the spreading motor 811. The spreading roller 812 is provided with multiple hooks 813, and the hooks 813 are arranged in multiple rows, with multiple hooks 813 in each row. A grading box 821 is mounted on the conveyor belt mechanism 9, with an opening at its lower end. The grading device 82 includes the grading box 821, a grading light source 822, and a grading camera 823. Two grading light sources 822 are provided, positioned at different locations on the inner wall of the grading box 821. A grading cylinder 824 is installed inside the grading box 821, with its piston rod connected to the grading camera 823, which is positioned between the two grading light sources 822. The grading light source 822 can be an LED light source, and the grading camera 823 can be a common industrial camera.

[0064] The grading light source 822 enhances the light intensity within the grading chamber 821, while the grading camera 823 captures image information of the selected tobacco leaves. Based on the captured image information, different batches of selected tobacco leaves are classified into Grade 1, Grade 2, and Grade 3 tobacco leaves. The grading standard can be formulated by combining the calculation method of leaf characteristic area in "YC / T 4492012" with the process standards in the actual cigarette production process.

[0065] like Figure 4As shown, the grading conveying device 83 includes a first vibrating screen 831 and a material inlet sealing device 832. The first vibrating screen 831 includes a vibrating seat 8311, a vibrating chamber 8312, elastic plates 8313, a connecting rod 8314, and a rocker arm 8315. Four elastic plates 8313 are provided. One end of the elastic plate 8313 is connected to the vibrating seat 8311, and the other end of the elastic plate 8313 is connected to the vibrating chamber 8312, thereby connecting the vibrating seat 8311 and the vibrating chamber 8312. The vibrating seat 8311 is located at the discharge end of the conveyor belt mechanism 9 adjacent to the grading box 821. A vibrating motor 10 is provided on the vibrating seat 8311. One end of the connecting rod 8314 is connected to the output shaft of the vibrating motor 10, and the other end of the connecting rod 8314 is connected to... One end of the rocker arm 8315 is rotatably connected to the vibrating chamber 8312, and the other end of the rocker arm 8315 is rotatably connected to the vibrating chamber 8312. The vibrating chamber 8312 is provided with a primary feed inlet 16, a secondary feed inlet 17, and a tertiary feed inlet 18. Several guide plates 15 are provided on the vibrating chamber 8312 corresponding to the secondary feed inlet 17 and the tertiary feed inlet 18. The guide plates 15 are preferably arc-shaped plates. The primary feed inlet 16, the secondary feed inlet 17, and the tertiary feed inlet 18 are respectively provided for primary, secondary, and tertiary tobacco flakes. Two feed inlet sealing devices 832 are provided, which are used to seal the secondary feed inlet 17 and the tertiary feed inlet 18 respectively. The mud and sand screening mechanism 3 and the crushed material removal mechanism 7 adopt the same structure as the first vibrating screen 831 as the second vibrating screen 31 and the third vibrating screen 71. The second vibrating screen 31 is provided with multiple second screen holes 311, which are dispersed and have a diameter of about 2.5 mm. The third vibrating screen 71 is provided with multiple third screen holes 711, which are distributed in a dispersed manner, and the diameter of the third screen holes 711 is about 1 mm.

[0066] The material outlet sealing device 832 includes a mounting frame 8321, a sealing cylinder 8322, a sealing bracket 8323, mounting rods 8324, a sealing plate 8325, and a limiting plate 8327. The mounting frame 8321 is mounted on the vibrating chamber 8312, and the sealing cylinder 8322 is mounted on the mounting frame 8321. Both sides of the mounting frame 8321 have mounting bracket grooves. Both sides of the sealing bracket 8323 are rotatably connected to two pulleys, which are positioned within the mounting bracket 8321 grooves and can roll relative to them. The number of mounting rods 8324 corresponds to the number of pulleys. One end of the mounting rod 8324 is rotatably connected to the sealing frame 8323, and the rotation center is set on the same axis as the rolling center of the pulley. The other end of the mounting rod 8324 is rotatably connected to the sealing plate 8325. The sealing plates 8325 are respectively set at the secondary material inlet 17 and the tertiary material inlet 18. The limiting plate 8327 is set on the vibrating chamber 8312. The limiting plate 8327 is provided with a limiting groove. The sealing plate 8325 is provided with a limiting rod 8326 corresponding to the limiting groove. The secondary material inlet 17 and the tertiary material inlet 18 are both provided with a conveyor belt mechanism 9, which is used to transport the secondary and tertiary tobacco sheets to the next processing station.

[0067] The vibrating motor 10 drives the connecting rod 8314 to rotate, which in turn causes the rocker arm 8315 to sway. The elastic sheet 8313, which is connected to the vibrating chamber 8312 and the vibrating seat 8311 at both ends, deforms and vibrates under the drive of the rocker arm 8315. This causes the vibrating chamber 8312 to vibrate relative to the vibrating seat 8311, thereby causing the selected tobacco flakes to move towards the primary feed inlet 16. Based on the image information collected by the grading camera 823, when the batch of tobacco flakes is determined to be primary tobacco flakes, the selected tobacco flakes are discharged from the primary feed inlet 16 and collected under the vibration drive of the vibrating chamber 8312, and quantitatively mixed back into the tobacco flakes of the next higher grade. When the batch of tobacco flakes is determined to be secondary tobacco flakes, the sealing cylinder 8322 set at the secondary feed inlet 17 drives the sealing frame 8323 to move relative to the mounting frame 8321, thereby driving the sealing plate 8325 to move through the mounting rod 8324. The limiting rod 8326 on the sealing plate 8325 slides out of the limiting groove of the limiting plate 8327, thereby releasing the sealing plate 8325 from the secondary feed port 17. The secondary tobacco sheet falls from the secondary feed port 17 onto the conveyor belt mechanism 9 below and is transported to the next stage of the processing flow station. After the material is discharged, the sealing cylinder 8322 drives the sealing plate 8325 to reset, and the limiting rod 8326 engages with the limiting plate 8327. The position of the sealing plate 8325 is limited within the trough. When it is determined that the batch of tobacco sheets is grade 3 tobacco sheets, the sealing cylinder 8322 set in the grade 3 feed port 18 drives the sealing plate 8325 to move, thereby releasing the sealing state of the sealing plate 8325 on the grade 3 feed port 18. The grade 3 tobacco sheets fall from the grade 3 feed port 18 onto the conveyor belt mechanism 9 below for transportation and collection. After the discharge is completed, the sealing plate 8325 is reset.

[0068] This application discloses a method for improving the quality of selected tobacco leaves. The system for improving the quality of selected tobacco leaves using the embodiments of this application includes the following steps:

[0069] S10: Collect the selected tobacco sheets into the warehouse;

[0070] S20: Inward quantitative feeding of selected tobacco sheets;

[0071] Material is fed into the quantitative feeding mechanism 1, and the cover plate 14 is driven to slide relative to the feeding bin 12 by the drive mechanism 13, thereby quantitatively feeding material onto the conveyor belt mechanism 9.

[0072] S30: Separate heavy impurities from the selected tobacco sheets;

[0073] Heavy impurities are separated and removed from the selected tobacco sheets by the heavy impurity sorting mechanism 2.

[0074] S40: Sift out the mud and sand from the selected tobacco sheets;

[0075] The mud and sand in the selected tobacco sheets are screened out by the mud and sand screening mechanism 3.

[0076] S50: Remove the hemp fiber structure from the selected tobacco sheet;

[0077] The hemp fiber structure in the selected tobacco sheet is removed by the hemp fiber removal mechanism 4.

[0078] S60: Remove non-smoke substances and wispy smoke from the selected tobacco sheets;

[0079] Non-smoke substances and wilts are removed from the selected tobacco sheets by optical recognition structure 62 and material removal structure 63.

[0080] S70: Remove tobacco fragments from the selected tobacco sheets;

[0081] The scrap material removal mechanism 7 removes the scrap material from the selected tobacco sheets.

[0082] S80: The selected tobacco sheets are sorted into Grade 1 tobacco sheets, Grade 2 tobacco sheets and Grade 3 tobacco sheets;

[0083] The selected tobacco sheets are spread thinly on the conveyor belt mechanism 9 by the spreading device 81, and then the selected tobacco sheets spread thinly on the conveyor belt mechanism 9 are divided into first-grade tobacco sheets, second-grade tobacco sheets and third-grade tobacco sheets by the grading device 82.

[0084] S90: Quantitatively re-blend the first-grade tobacco leaves, transport the second-grade tobacco leaves to the next stage of processing, and collect and clean the third-grade tobacco leaves.

[0085] The first vibrating screen 831 and the material outlet sealing device 832 transport the first-grade, second-grade, and third-grade tobacco sheets in batches to the corresponding first-grade material outlet 16, second-grade material outlet 17, and third-grade material outlet 18. The first-grade tobacco sheets are quantitatively re-blended, the second-grade tobacco sheets are transported to the next-level processing station, and the third-grade tobacco sheets are transported and collected for processing.

[0086] The implementation principle of a system for improving the quality of selected tobacco flakes according to an embodiment of this application is as follows: Selected tobacco flakes are added to the quantitative feeding mechanism 1. The drive mechanism 13 drives the cover plate 14 to move relative to the feeding bin 12, thereby controlling the quantitative feeding to the conveyor belt mechanism 9. The selected tobacco flakes pass through the heavy impurity sorting mechanism 2, the mud and sand screening mechanism 3, and the hemp fiber removal mechanism 4 to remove the mud, sand, heavy impurities, and hemp fiber structures mixed in with the selected tobacco flakes. Then, they are conveyed to the spectral removal box 61 by the conveyor belt. The optical recognition structure 62 determines whether there are non-smoking substances and green smoke structures in the selected tobacco flakes. Finally, the removal box... Structure 63 removes the selected tobacco sheets containing non-smoking substances and blue smoke from the batch. The selected tobacco sheets are transported by conveyor belt mechanism 9 and spread thinly on the conveyor belt by spreading device 81 to facilitate image information collection. Grading device 82 collects the image information of the batch and, based on the collected image information, grades the selected tobacco sheets into first-grade, second-grade, and third-grade tobacco sheets in batches. The grading conveyor 83 transports the tobacco sheets according to the graded batches, which helps improve the quality of the selected tobacco sheets and also helps reduce the waste rate of high-quality tobacco sheets in the selected tobacco sheets through this system.

[0087] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A system for improving the quality of selected tobacco leaves, characterized in that: It includes a quantitative feeding mechanism (1), a heavy impurity sorting mechanism (2), a mud and sand screening mechanism (3), a hemp fiber removal mechanism (4), a light impurity removal mechanism (5), a spectral impurity removal mechanism (6), a crushed material removal mechanism (7), and a grading mechanism (8). Adjacent mechanisms are connected by a conveyor belt mechanism (9). The quantitative feeding mechanism (1) is located at the feed inlet of the heavy impurity sorting mechanism (2), and the quantitative feeding mechanism (1) is used to quantitatively feed material onto the heavy impurity sorting mechanism (2); The heavy impurity sorting mechanism (2) is used to remove heavy impurities from the sorted tobacco sheets; The mud and sand screening mechanism (3) is used to remove the mud and sand from the selected tobacco sheets after the heavy impurities have been removed by the heavy impurities sorting mechanism (2); The hemp fiber removal mechanism (4) is used to remove the hemp fiber structure in the selected tobacco sheets after the mud and sand have been removed by the mud and sand screening mechanism (3); The lightweight impurity removal mechanism (5) is used to remove lightweight impurities from the selected tobacco sheets after the hemp fiber removal mechanism (4) has removed the hemp fiber structure. The spectral impurity removal mechanism (6) is used to remove non-smoke substances and green smoke from the selected tobacco sheet after the light impurity removal mechanism (5) has removed light impurities; The fragment removal mechanism (7) is used to remove tobacco fragments from the selected tobacco sheets after the non-smoke substances and green smoke have been removed by the spectral impurity removal mechanism (6); The grading mechanism (8) is used to grade the selected tobacco sheets after the tobacco sheet fragments have been removed by the scrap removal mechanism (7); The grading mechanism (8) includes a paving device (81), a grading device (82), and a grading conveying device (83). The paving device (81) is mounted on the conveyor belt mechanism (9). The grading device (82) includes a grading box (821), a grading light source (822), and a grading camera (823). The grading box (821) is mounted on the conveyor belt mechanism (9). Several grading light sources (822) are provided, and the grading light sources (822) are positioned facing the conveyor belt mechanism (9). The grading camera (823) is located inside the grading box (821) and faces the conveyor belt mechanism (9). The grading conveying device (83) is located at one end of the discharge port of the grading device (82). The grading conveying device (83) includes a first vibrating screen (831) and a material inlet sealing device (832). The first vibrating screen (831) includes a vibrating seat (8311), a vibrating chamber (8312), an elastic plate (8313), a connecting rod (8314), and a rocker arm (8315). Several elastic plates (8313) are provided, with one end connected to the vibrating seat (8311) and the other end connected to the vibrating chamber (8312). A vibrating motor (1) is installed on the vibrating seat (8311). 0), the output shaft of the vibration motor (10) is connected to one end of the connecting rod (8314), the other end of the connecting rod (8314) is connected to one end of the rocker arm (8315), the other end of the rocker arm (8315) is connected to the vibration chamber (8312), the vibration chamber (8312) is provided with a primary material inlet (16), a secondary material inlet (17) and a tertiary material inlet (18), and two material inlet sealing devices (832) are provided, the two material inlet sealing devices (832) are respectively located at the secondary material inlet (17) and the tertiary material inlet (18); The material outlet sealing device (832) includes a mounting frame (8321), a sealing cylinder (8322), a sealing frame (8323), a mounting rod (8324), a sealing plate (8325), and a limiting plate (8327). The mounting frame (8321) is mounted on the vibrating chamber (8312), and the sealing cylinder (8322) is mounted on the mounting frame (8321). The mounting frame (8321) is provided with a mounting frame groove. Several pulleys are rotatably connected to the sealing frame (8323). The pulleys are located in the mounting frame groove and can roll relative to the mounting frame. The sealing frame (8323) and the sealing cylinder (8324) are connected to the sealing cylinder (8325). The piston rod of the blocking cylinder (8322) is connected. One end of the mounting rod (8324) is rotatably connected to the blocking frame (8323), and the other end of the mounting rod (8324) is hinged to the blocking plate (8325). The blocking plate (8325) is located at the secondary material port (17) or the tertiary material port (18). The limiting plate (8327) is located on the vibrating chamber (8312). The limiting plate (8327) is provided with a limiting groove. The blocking plate (8325) is provided with a limiting rod (8326). When the blocking plate (8325) blocks the material port, the limiting rod (8326) is located in the limiting groove.

2. The system for improving the quality of selected tobacco sheets according to claim 1, characterized in that: The quantitative feeding mechanism (1) includes a feeding bracket (11), a feeding bin (12), a driving mechanism (13), and a cover plate (14). The feeding bin (12) is mounted on the feeding bracket (11), the driving mechanism (13) is mounted on the feeding bracket (11), and the cover plate (14) is drivenly connected to the driving mechanism (13) and slidably connected to the outlet of the feeding bin (12).

3. The system for improving the quality of selected tobacco sheets according to claim 2, characterized in that: The drive mechanism (13) includes a drive motor, a rotating rod (131), a lever (132), and a stop lever (133). The drive motor is mounted on the feeding bin (12). The rotating rod (131) is fixedly connected to the output shaft of the drive motor. A lever block (1311) is mounted on the rotating rod (131). The lever (132) is rotatably connected to the feeding bin (12). A torsion spring (134) for resetting the lever (132) is provided between the feeding bin (12) and the lever (132). The stop lever (133) is located adjacent to the feeding bin. The position of the lever (132) is near the position of the stop bar (133), which cooperates with the torsion spring (134) to limit the position of the lever (132). The cover plate (14) is provided with a stop block (141) and a cooperating rod (142). The rotating rod (131) can move the cooperating rod (142) to release the cover plate (14) from blocking the feeding bin (12). The lever (132) can move the stop block (141) under the drive of the rotating rod (131) to block the cover plate (14) from blocking the feeding bin (12).

4. The system for improving the quality of selected tobacco sheets according to claim 1, characterized in that: The spectral impurity removal mechanism (6) includes a spectral removal box (61), an optical recognition structure (62), and a removal structure (63). The optical recognition structure (62) includes a spectral light source (621) and a spectral camera (622). Several spectral light sources (621) are provided. The spectral light sources (621) are located inside the spectral removal box (61) and are oriented towards the selected tobacco sheet to be detected. The spectral camera (622) is located inside the spectral removal box (61) and is oriented towards the selected tobacco sheet to be detected.

5. The system for improving the quality of selected tobacco sheets according to claim 4, characterized in that: The material removal structure (63) includes a blower (631) and a waste bin (632). Waste troughs are provided on both sides of the conveyor belt mechanism below the spectral material removal bin (61). The blower (631) is positioned corresponding to the waste troughs. The waste bin (632) is connected to the waste troughs.

6. The system for improving the quality of selected tobacco sheets according to claim 1, characterized in that: The paving device (81) includes a paving motor (811) and a paving roller (812). The paving motor (811) is mounted on the conveyor belt mechanism (9). The paving roller (812) is connected to the output shaft of the paving motor (811). The paving roller (812) is provided with multiple hooks (813).

7. A method for improving the quality of selected tobacco leaves, using the system for improving the quality of selected tobacco leaves as described in any one of claims 1-6, characterized in that, Includes the following steps: S10: Collect the selected tobacco sheets into the warehouse; S20: Quantitatively feed selected tobacco sheets into the quantitative feeding mechanism (1); S30: Separate heavy impurities from the selected tobacco sheets; S40: Sift out the mud and sand from the selected tobacco sheets; S50: Remove the hemp fiber structure from the selected tobacco sheet; S60: Remove non-smoke substances and wispy smoke from the selected tobacco sheets; S70: Remove tobacco fragments from the selected tobacco sheets; S80: The selected tobacco sheets are sorted into Grade 1 tobacco sheets, Grade 2 tobacco sheets and Grade 3 tobacco sheets; S90: Quantitatively re-blend the primary-grade selected tobacco leaves, transport the secondary-grade selected tobacco leaves to the next stage of processing, and collect and clean the tertiary-grade selected tobacco leaves.

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