A secondary sorting device for tobacco processing cut stems

Abstract

The present invention discloses a secondary sorting device for tobacco stem cuttings, comprising a conveying mechanism, a screen frame disposed above the conveying mechanism, the screen frame being connected to the conveying mechanism via four buffer assemblies, a screen plate disposed above the screen frame, the conveying mechanism being connected to a first vibrating mechanism located at the bottom of the screen frame via two symmetrically arranged first transmission mechanisms, and the conveying mechanism being connected to a second vibrating mechanism located at the bottom of the screen plate via two symmetrically arranged second transmission mechanisms; the first vibrating mechanism comprising a first roller connected to the two first transmission mechanisms, two first pressing blocks being equidistantly fixed to the outer wall of the first roller, and two second pressing blocks being equidistantly fixed to the outer wall of the second roller. The present invention performs secondary screening with higher efficiency and finer screening, ensuring that the tobacco stem cuttings after screening are free of impurities and qualified, while fully utilizing power and being more energy-efficient and efficient.

Description

Technical Field

[0001] The present invention relates to the field of tobacco stem shred processing equipment, and more particularly to a tobacco stem shred secondary sorting device. Background Art

[0002] Tobacco is an annual or limited perennial herbaceous plant of the genus Nicotiana in the Solanaceae family. It is covered with glandular hairs and has a robust root. Its stems are two meters tall, slightly lignified at the base. Its leaves are oblong-lanceolate, lanceolate, oblong, or ovate, gradually tapering to a point at the apex and tapering to an ear-shaped, semi-amplexicaul stem. It is widely used in industrial raw materials, consumer products, and the medical industry, with cut tobacco stems being a key component of tobacco production.

[0003] Tobacco stem processing requires primary and secondary screening. The secondary sorting is to sort the tobacco from the stems sorted out in the primary sorting process again, in order to solve the problem of tobacco waste caused by the primary sorting process. However, the original secondary sorting principle is a simple negative pressure principle, which cannot fully separate the tobacco, resulting in tobacco waste. The sorting flow rate is small, and the primary and secondary sorting operations are independent. This method is costly and inefficient.

[0004] Therefore, how to provide a device that can effectively perform secondary sorting of tobacco stems has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of the present invention is to provide a secondary sorting device for cut tobacco stems to solve the technical problems in the above-mentioned background technology.

[0006] According to one aspect of the present invention, a secondary sorting device for cut tobacco stems is provided, comprising a conveying mechanism, a screen frame, a screen plate, a first vibrating mechanism, and a second vibrating mechanism;

[0007] The conveying mechanism includes a conveying frame, and a driving roller and a driven roller are rotatably provided at both ends of the conveying frame. The driving roller and the driven roller are connected by a conveyor belt, and the driving roller is connected to a conveying motor;

[0008] The screen frame is arranged above the conveying mechanism, and the four corners of the screen frame are connected to the conveying mechanism through buffer components;

[0009] The first vibration mechanism includes first rollers mounted on both sides of the conveying frame, the first rollers are in contact with the bottom of the screen frame, and a first pressure block is axially arranged on the circumferential surface of the first roller. The driven roller is connected to the first roller through a first transmission mechanism to drive the screen frame to vibrate;

[0010] The sieve plate is arranged above the sieve frame, and the second vibration mechanism is arranged beside the sieve plate and connected to the driven roller through a second transmission mechanism to drive the sieve plate to vibrate.

[0011] Optionally, according to the tobacco processing cut stem secondary sorting device of the present invention, two sets of the first transmission mechanisms are provided between the screen frame and the driven roller, and the two sets of the first transmission mechanisms are symmetrically arranged on both sides of the conveyor frame.

[0012] Optionally, according to the tobacco processing stem secondary sorting device of the present invention, the first transmission mechanism includes a first transmission wheel and a second transmission wheel, the first transmission wheel is coaxially connected to the driven roller, the second transmission wheel is coaxially connected to the first rotating roller, and the first transmission wheel and the second transmission wheel are connected by a first transmission belt.

[0013] Optionally, according to the tobacco processing stem secondary sorting device of the present invention, the buffer assembly includes a mounting plate fixed to the outer wall of the conveying frame, a slide groove is provided on the top of the mounting plate, a fixed seat is fixed in the slide groove, the top of the fixed seat is connected to a slider via a spring, and the slider is fixed to the outer wall of the screen frame.

[0014] Optionally, according to the tobacco processing cut stem secondary sorting device of the present invention, a fixed plate is provided on a side of the conveying frame away from the conveying motor, connecting frames are provided on both sides of the upper end of the fixed plate, and the sieve plate is rotatably arranged between the connecting frames;

[0015] The second vibration mechanism includes a second roller, a mounting opening is opened on the fixed plate, the second roller is rotatably connected in the mounting opening, the side wall of the screen plate is in contact with the second roller, and an axially arranged second pressure block is provided on the circumferential surface of the second roller, and the driven roller and the second roller are connected through a second transmission mechanism to drive the screen plate to vibrate.

[0016] Optionally, according to the tobacco processing stem secondary sorting device described in the present invention, the inner wall of the connecting frame is provided with an arc groove, the outer wall of the screen plate is provided with a connecting shaft slidably connected to the arc groove, a push rod is fixed to the inner side of the end of the connecting frame away from the connecting shaft, and a rotating groove adapted to the push rod is provided at the bottom of the screen plate. When the second roller rotates, the screen plate rotates with the push rod as the rotating point and the arc groove as the rotating path.

[0017] Optionally, according to the tobacco processing stem secondary sorting device of the present invention, the second transmission mechanism includes a first transmission gear and a second transmission gear, the first transmission gear is coaxially connected to the driven roller, the second transmission gear is coaxially connected to the second rotating roller, and the second transmission gear is connected to the second transmission gear through a second transmission belt.

[0018] Optionally, according to the tobacco processing stem secondary sorting device of the present invention, a U-shaped frame is fixed to the top of the screen plate, an inclined material guide plate is fixed to the end of the bottom of the screen plate away from the fixed plate, and a notch is provided on the outer wall of the fixed plate for the material guide plate to pass through, so that the debris passing through the screen plate can be discharged along the material guide plate.

[0019] Optionally, the tobacco stem secondary sorting device according to the present invention further comprises a scraping mechanism, wherein the scraping mechanism comprises a mounting frame, a scraping member and a top block;

[0020] The top two sides of the fixed plate are also rotatably connected to mounting frames, and the mounting frames are provided with moving slots;

[0021] The scraper is provided with connecting plates at both ends of the top, and a connecting rod is provided on the back side of the connecting plate for rotation connection, and the connecting rod is slidably connected in the movable groove; the bottom of the scraper is also provided with scraping bristles that contact the screen plate;

[0022] The top block is arranged on the two outer side walls of the opening of the U-shaped frame and abuts against the end of the mounting frame, so that when the screen plate rotates, the mounting frame can be intermittently lifted by the top block, so that the scraper can scrape the screen plate along the moving groove.

[0023] Optionally, according to the tobacco processing cut stem secondary sorting device of the present invention, the sieve holes of the sieve plate are smaller than the sieve holes of the sieve frame, and the end of the sieve frame away from the fixed plate exceeds the end of the sieve plate away from the fixed plate.

[0024] The beneficial effects of the present invention are:

[0025] By arranging a first vibration mechanism and a second vibration mechanism, the first transmission wheel coaxially fixed with the conveying roller is combined with the second transmission wheel and the first transmission belt to drive the first vibration mechanism located at the bottom of the screen frame to vibrate. At the same time, the first transmission wheel is coaxially fixed with the first transmission gear, combined with the second transmission gear and the second transmission belt, to drive the second vibration mechanism to vibrate, and the second vibration mechanism drives the screen plate to vibrate, so that the first pressing block indirectly lifts the screen frame. Since the screen frame is fixed to the conveying frame through four buffer assemblies, it can play an effective vibration role. Similarly, the second pressing block indirectly squeezes one side of the screen plate, so that the screen plate indirectly tilts counterclockwise, and the tobacco processing stems can first pass through the screen plate for screening, and some small waste can pass through the screen plate and fall on the guide plate, slide down and be discharged. The tobacco processing stems after the first screening fall into the screen frame and are screened for the second time by vibration and bumping. The qualified tobacco processing stems are sent to the screen frame and fall onto the conveyor belt for transportation for secondary screening. The screening efficiency is higher and finer, ensuring that the tobacco processing stems after screening are free of impurities and qualified, and more energy-saving and efficient.

[0026] By means of the added mounting frame, movable groove, connecting rod, connecting plate, scraper, scraping bristles and top block, the connecting rod and the connecting plate are rotatably arranged, the bottom of the mounting frame contacts the top block, and the movable groove is tilted clockwise. When the screen plate is indirectly squeezed and tilted by the second pressure block, the screen plate tilts counterclockwise, and at the same time, the top block lifts the mounting frame. At this time, the mounting frame can be tilted so that the scraper originally close to the top block can move close to the fixed plate, thereby realizing indirect reciprocating motion. The scraper includes scraping bristles evenly fixed on the bottom, which can scrape the tobacco processing stems on the top of the screen plate, which is more conducive to the tobacco processing stems falling along the screen plate into the screen frame for secondary screening. The screening efficiency is higher and more refined, ensuring that the tobacco processing stems after screening are free of impurities and qualified, and more energy-saving and efficient.

[0027] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0029] Figure 1 This is a schematic diagram of the first three-dimensional structure of a secondary sorting device for cut stems in tobacco processing proposed by the present invention;

[0030] Figure 2 This is a second three-dimensional structural schematic diagram of a secondary separation device for cut tobacco stems proposed by the present invention;

[0031] Figure 3 This is a schematic diagram of a first partial three-dimensional structure of a secondary separation device for cut stems in tobacco processing proposed by the present invention;

[0032] Figure 4 This is a schematic diagram of a second partial three-dimensional structure of a tobacco processing cut stem secondary sorting device proposed by the present invention;

[0033] Figure 5 The invention proposes a secondary separation device for tobacco processing cut stems Figure 3 A in the middle is an enlarged schematic diagram of the three-dimensional structure;

[0034] Figure 6 This is a schematic diagram of the three-dimensional structure of a buffer assembly of a secondary separation device for cut stems in tobacco processing proposed by the present invention;

[0035] Figure 7 This is a schematic diagram of the three-dimensional structure of a connecting frame of a secondary sorting device for cut tobacco stems proposed by the present invention.

[0036] Explanation of the accompanying drawings: 1. Conveying mechanism; 2. Screen frame; 3. Screen plate; 4. Fixed plate; 5. Buffer assembly; 6. First transmission mechanism; 7. Second transmission mechanism; 8. First roller; 9. First pressure block; 10. First transmission wheel; 11. Second transmission wheel; 12. First transmission belt; 13. First transmission gear; 14. Second transmission gear; 15. Second transmission belt; 16. Mounting port; 17. Second roller; 18. Second pressure block; 19. Connecting frame; 20. Push rod; 21. Arc groove; 22. Connecting shaft; 23. Mounting frame; 24. Moving groove; 25. Connecting rod; 26. Connecting plate; 27. Scraper; 28. U-shaped frame; 29. Guide plate; 30. Push block; 31. Mounting plate; 32. Slide groove; 33. Fixed seat; 34. Spring; 35. Slider. DETAILED DESCRIPTION

[0037] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0038] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0039] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0040] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0041] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0042] according to Figures 1 to 7 As shown, the present invention provides a secondary sorting device for cut tobacco stems, comprising a conveying mechanism 1, a screen frame 2, a screen plate 3, a first vibrating mechanism and a second vibrating mechanism.

[0043] The conveying mechanism 1 includes a conveying frame, at both ends of which a driving roller and a driven roller are rotatably provided. The driving roller and the driven roller are connected by a conveying belt, and the driving roller is connected to a conveying motor.

[0044] The screen frame 2 is arranged above the conveying mechanism 1 , and the four corners of the screen frame 2 are connected to the conveying mechanism 1 through buffer components 5 .

[0045] The first vibration mechanism includes a first roller 8 mounted on both sides of the conveying frame, the first roller 8 is in contact with the bottom of the screen frame 2, and an axially arranged first pressure block 9 is provided on the circumferential surface of the first roller 8. The driven roller is connected to the first roller 8 through a first transmission mechanism 6 to drive the screen frame 2 to vibrate.

[0046] The sieve plate 3 is arranged above the sieve frame 2 , and the second vibrating mechanism is arranged beside the sieve plate 3 and connected to the driven roller through the second transmission mechanism 7 to drive the sieve plate 3 to vibrate.

[0047] Furthermore, two groups of first transmission mechanisms 6 are provided between the screen frame 2 and the driven roller. The two groups of first transmission mechanisms 6 are symmetrically arranged on both sides of the conveying frame to ensure the vibration effect of the first vibration mechanism on the screen frame 2, and the vibration of the screen frame 2 is limited by the two groups of transmission mechanisms to prevent it from positional displacement.

[0048] Furthermore, the first transmission mechanism 6 includes a first transmission wheel 10 and a second transmission wheel 11. The first transmission wheel 10 is coaxially connected to the driven roller, and the second transmission wheel 11 is coaxially connected to the first rotating roller 8. The first transmission wheel 10 and the second transmission wheel 11 are connected by a first transmission belt 12. In this embodiment, when the conveying mechanism 1 is activated, the conveying motor drives the driving roller to rotate, and the driving roller drives the driven roller to rotate via the conveying belt, thereby driving the first rotating roller 8. Two first pressing blocks 9 are equidistantly fixed to the circumference of the first rotating roller 8. When the first rotating roller 8 rotates, the first pressing blocks 9 indirectly lift the screen frame 2, thereby achieving the purpose of vibratory screening of the cut tobacco stems during processing.

[0049] Furthermore, the buffer assembly 5 includes a mounting plate 31 fixed to the outer wall of the conveyor frame. A chute 32 is formed at the top of the mounting plate 31. A fixing seat 33 is fixed in the chute 32. A slider 35 is connected to the top of the fixing seat 33 via a spring 34. The slider 35 is fixed to the outer wall of the screen frame 2. Combined with the elastic force of the spring 34, when the screen frame 2 is not in contact with the first pressure block 9, it is quickly reset by the spring 34, thereby achieving the technical effect of rapid vibration.

[0050] Furthermore, a fixed plate 4 is provided on the side of the conveying frame away from the conveying motor, and connecting frames 19 are provided on both sides of the upper end of the fixed plate 4, and the screen plate 3 is rotatably arranged between the connecting frames 19.

[0051] The second vibration mechanism includes a second roller 17. A mounting opening 16 is provided on the fixed plate 4. The second roller 17 is rotatably connected to the mounting opening 16. The side wall of the sieve plate 3 is in contact with the second roller 17. A second pressure block 18 is axially arranged on the circumferential surface of the second roller 17. The driven roller is connected to the second roller 17 via the second transmission mechanism 7 to drive the sieve plate 3 to vibrate. During implementation, since the sieve frame 2 is located between the sieve plate 3 and the conveying mechanism 1, the second vibration mechanism can only be set beside the sieve plate 3 via the fixed plate 4 to achieve a horizontal shaking effect on the sieve plate 3, thereby achieving the purpose of vibrating the sieve plate 3.

[0052] Furthermore, an arc groove 21 is provided on the inner wall of the connecting frame 19, and a connecting shaft 22 is provided on the outer wall of the sieve plate 3 which is slidably connected to the arc groove 21. A push rod 20 is fixed to the inner side of one end of the connecting frame 19 away from the connecting shaft 22, and a rotating groove adapted to the push rod 20 is provided on the bottom of the sieve plate 3. When the second roller 17 rotates, the sieve plate 3 rotates with the push rod 20 as the rotating point and the arc groove 21 as the rotating path.

[0053] The second transmission mechanism 7 includes a first transmission gear 13 and a second transmission gear 14 . The first transmission gear 13 is coaxially connected to the driven roller. The second transmission gear 14 is coaxially connected to the second rotating roller 17 . The second transmission gears 14 are connected to each other through a second transmission belt 15 .

[0054] In this embodiment, the inner wall of the second transmission belt 15 is provided with a tooth groove that meshes with the first transmission gear 13 and the second transmission gear 14. The second roller 17 rotates, so that the second pressing block 18 indirectly squeezes one side of the screen plate 3, causing the screen plate 3 to indirectly tilt counterclockwise, and the tobacco processing stems can first pass through the screen plate 3 for screening.

[0055] Furthermore, a U-shaped frame 28 is fixed to the top of the sieve plate 3, and an inclined guide plate 29 is fixed to the bottom end of the sieve plate 3 away from the fixed plate 4. A notch is provided on the outer wall of the fixed plate 4 for the guide plate 29 to pass through, so that the debris passing through the sieve plate 3 is discharged along the guide plate 29. The U-shaped frame 28 on the top of the sieve plate 3 plays a protective role, and some small waste materials can pass through the sieve plate 3 and fall onto the guide plate 29, sliding down and being discharged.

[0056] Furthermore, a scraping mechanism is also included, which includes a mounting frame 23 , a scraper and a top block 30 .

[0057] Mounting frames 23 are rotatably connected to both sides of the top of the fixing plate 4 , and movable slots 24 are defined in the mounting frames 23 .

[0058] The top two ends of the scraper are provided with connecting plates 26, and the side facing away from the connecting plates 26 is provided with a rotatably connected connecting rod 25, which is slidably connected in the movable groove 24; the bottom of the scraper is also provided with scraping bristles that contact the screen plate 3.

[0059] The top block 30 is arranged on the two outer side walls of the opening of the U-shaped frame 28 and abuts against the end of the mounting frame 23, so that when the screen plate 3 rotates, the mounting frame 23 can be intermittently lifted by the top block 30, so that the scraper can scrape the screen plate 3 along the moving groove 24.

[0060] The scraper 27 is provided with a plurality of scraping blades 27, and the scraping blades 27 are provided with a plurality of scraping blades 27. The scraping blades 27 are provided with a plurality of scraping blades 27, and the plurality of scraping blades 27 are provided with a plurality of scraping blades 27. The scraping blades 27 are provided with a plurality of scraping blades 27, and the plurality of scraping blades 27 are provided with a plurality of scraping blades 27. The plurality of scraping blades 27 are provided with a plurality of scraping blades 27, and the plurality of scraping blades 27 are provided with a plurality of scraping blades 27.

[0061] Optionally, in the secondary sorting device for tobacco stem cuts according to the present invention, the mesh openings of sieve plate 3 are smaller than those of sieve frame 2, and the end of sieve frame 2 distal to fixed plate 4 extends beyond the end of sieve plate 3 distal to fixed plate 4. This ensures that the tobacco stem cuts after secondary screening are not too large and remain of a medium-sized acceptable size. The sieve plate 3 primarily screens fine waste materials such as debris.

[0062] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A secondary sorting device for tobacco stems, characterized in that: It includes a conveying mechanism, a screen frame, a screen plate, a first vibrating mechanism and a second vibrating mechanism; The conveying mechanism includes a conveying frame, and a driving roller and a driven roller are rotatably provided at both ends of the conveying frame. The driving roller and the driven roller are connected by a conveyor belt, and the driving roller is connected to a conveying motor; The screen frame is arranged above the conveying mechanism, and the four corners of the screen frame are connected to the conveying mechanism through buffer components; The first vibration mechanism includes first rollers mounted on both sides of the conveying frame, the first rollers are in contact with the bottom of the screen frame, and a first pressure block is axially arranged on the circumferential surface of the first roller. The driven roller is connected to the first roller through a first transmission mechanism to drive the screen frame to vibrate; The sieve plate is arranged above the sieve frame, and the second vibration mechanism is arranged beside the sieve plate and connected to the driven roller through a second transmission mechanism to drive the sieve plate to vibrate; The buffer assembly includes a mounting plate fixed to the outer wall of the conveying frame, a slide groove is provided on the top of the mounting plate, a fixing seat is fixed in the slide groove, a slider is connected to the top of the fixing seat through a spring, and the slider is fixed to the outer wall of the screen frame; A fixed plate is provided on the side of the conveying frame away from the conveying motor, and connecting frames are provided on both sides of the upper end of the fixed plate, and the sieve plate is rotatably arranged between the connecting frames; The second vibration mechanism includes a second roller. A mounting opening is provided on the fixed plate. The second roller is rotatably connected to the mounting opening. The side wall of the sieve plate is in contact with the second roller. A second pressure block is axially arranged on the circumferential surface of the second roller. The driven roller is connected to the second roller via a second transmission mechanism to drive the sieve plate to vibrate. The inner wall of the connecting frame is provided with an arc groove, and the outer wall of the sieve plate is provided with a connecting shaft slidably connected to the arc groove; A push rod is fixed to the inner side of one end of the connecting frame away from the connecting shaft, and a rotation groove adapted to the push rod is opened at the bottom of the screen plate. When the second roller rotates, the screen plate rotates with the push rod as the rotation point and the arc groove as the rotation path; A U-shaped frame is fixed on the top of the sieve plate, and an inclined material guide plate is fixed to one end of the bottom of the sieve plate away from the fixed plate. A notch is provided on the outer wall of the fixed plate for the material guide plate to pass through, so that the debris passing through the sieve plate is discharged along the material guide plate. It also includes a scraping mechanism, which includes a mounting frame, a scraping member and a top block; The top two sides of the fixed plate are also rotatably connected to mounting frames, and the mounting frames are provided with moving slots; The scraper is provided with connecting plates at both ends of the top, and a connecting rod is provided on the back side of the connecting plate for rotation connection, and the connecting rod is slidably connected in the movable groove; the bottom of the scraper is also provided with scraping bristles that contact the screen plate; The top block is arranged on the two outer side walls of the opening of the U-shaped frame and abuts against the end of the mounting frame, so that when the screen plate rotates, the mounting frame can be intermittently lifted by the top block, so that the scraper can scrape the screen plate along the moving groove.

2. The tobacco stem secondary sorting device according to claim 1, characterized in that: Two groups of first transmission mechanisms are provided between the screen frame and the driven roller, and the two groups of first transmission mechanisms are symmetrically arranged on both sides of the conveying frame.

3. The tobacco stem secondary sorting device according to claim 2, characterized in that: The first transmission mechanism includes a first transmission wheel and a second transmission wheel. The first transmission wheel is coaxially connected to the driven roller, the second transmission wheel is coaxially connected to the first rotating roller, and the first transmission wheel and the second transmission wheel are connected by a first transmission belt.

4. The tobacco stem secondary sorting device according to claim 1, characterized in that: The second transmission mechanism includes a first transmission gear and a second transmission gear. The first transmission gear is coaxially connected to the driven roller, the second transmission gear is coaxially connected to the second rotating roller, and the first transmission gear and the second transmission gear are connected via a second transmission belt.

5. The tobacco stem secondary sorting device according to claim 1, characterized in that: The sieve holes of the sieve plate are smaller than the sieve holes of the sieve frame, and one end of the sieve frame away from the fixed plate exceeds one end of the sieve plate away from the fixed plate.

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