Raw material screening device for tobacco primary processing

Abstract

The utility model discloses a tobacco primary processing raw material screening device which comprises a screening power base, the screening power base is connected with a screening box, the screening box comprises an upper screening box body, a middle screening box body and a bottom screening box body, and one side of the upper screening box body, one side of the middle screening box body and one side of the bottom screening box body are each connected with a discharging barrel. A screen plate and a screen mesh are inserted into the middle-section screening box and the bottom screening box correspondingly, the end of the upper-side screening box is in threaded connection with a dustproof cover, the dustproof cover is connected with a material dispersing motor, the end of an output rod is detachably connected with a transverse rod, and the lower side of the transverse rod is connected with a plurality of material stirring rods. The output end of the lifting motor is connected with a driving gear, the driving gear is connected with two driven gears through a transmission belt, the driven gears are connected with a lifting threaded rod, the outer wall of a shaft body of the lifting threaded rod is connected with two matched nut sleeves, and the nut sleeves are connected with lifting blocks. The two opposite lifting blocks in a single group are fixedly connected to the two sides of the upper screening box and the two sides of the middle screening box correspondingly.

Description

Technical Field

[0001] The utility model belongs to the technical field of tobacco production, and particularly relates to a screening device for tobacco silk-making raw materials. Background Art

[0002] Tobacco is a plant of the genus Nicotiana in the Solanaceae family, an annual or limited perennial herb, and the whole body is covered with glandular hairs; the roots are thick, the stem is 0.7 to 2 meters high, slightly lignified at the base, the leaves are oblong-lanceolate, lanceolate, oblong or ovate, the apex is gradually pointed, the base is gradually narrowed to the stem to form auricles and semi-embrace the stem, the inflorescence is terminal, paniculate, many-flowered: the pedicel is 5-20 mm long, the capsule is ovoid or oblong, about equal in length to the persistent calyx, the seeds are round or broadly oblong, about 0.5 mm in diameter, and generally a screening device is required to screen the size of tobacco shreds during tobacco silk-making.

[0003] When the traditional screening device is in use, it cannot efficiently screen tobacco shreds and there will still be tobacco shreds stuck on the sieve plate or sieve mesh and unable to fall off, which affects the user's use. Therefore, generally after using for a period of time, the spliced screening cylinders will be opened for cleaning to prevent tobacco shreds from winding and blocking on the sieve plate and sieve mesh. When the staff disassembles the multiple spliced screening boxes, the workload of the staff is relatively large, the cleaning process is time-consuming and laborious, the work efficiency is low, and when a large amount of tobacco shreds enter the first-layer screening box at the same time in the first-layer screening machine case, there may be a problem that the raw materials are piled up and affect the uniform screening, so the screening time will be prolonged and the screening efficiency will be reduced. Herein, a screening device for tobacco silk-making raw materials that can solve the above technical problems is proposed. Summary of the Utility Model

[0004] Aiming at the problems raised in the above background art, the purpose of the present utility model is: to provide a screening device for tobacco silk-making raw materials.

[0005] To achieve the above technical purpose, the technical solution adopted by the present utility model is as follows:

[0006] A screening device for tobacco silk-making raw materials, including a screening power base, the screening power base is connected with a screening box, the screening box includes an upper-side screening box, a middle-section screening box and a bottom screening box, one side of the upper-side screening box, the middle-section screening box and the bottom screening box is respectively connected with a feeding tube, the middle-section screening box and the bottom screening box are respectively inserted with a sieve plate and a sieve mesh, the outer walls of the contact ends between the upper-side screening box, the middle-section screening box and the bottom screening box are all sleeved with tightening rings, the end of the upper-side screening box is threadedly connected with a dust-proof cover, the dust-proof cover is detachably connected with a feeding hopper, the dust-proof cover is connected with a material-scattering motor, the output rod of the material-scattering motor is rotatably connected in the dust-proof cover, the end of the output rod is detachably connected with a cross bar, and a plurality of stirring rods are connected to the lower side of the cross bar, and the ends of the stirring rods are fittingly connected to the surface of the sieve plate;

[0007] The screening power base is connected with a lifting motor, the output end of the lifting motor is connected with a driving gear, the driving gear is connected with two driven gears through a transmission belt, the driven gears are connected with lifting threaded rods, an anti - detachment round rod is fixedly connected to the middle section of the lifting threaded rods, the outer walls of the shaft bodies of the lifting threaded rods on both sides of the anti - detachment round rod are provided with threads of different pitches, two matching nut sleeves are connected to the outer walls of the shaft bodies of the lifting threaded rods, the nut sleeves are connected with lifting blocks, and two opposite lifting blocks in a single group are respectively fixedly connected to both sides of the upper - side screening box and the middle - section screening box.

[0008] Further defined, an inclined platform is provided at the bottom of the inner wall of the bottom - side screening box. Such a structural design can achieve the effects of guiding materials and preventing bottom - side materials from piling up.

[0009] Further defined, both the shaft bodies of the sieve plate and the sieve mesh are connected with first mounting rings, the upper - end parts of the inner walls of the middle - section screening box and the bottom - side screening box are respectively fixedly connected with second mounting rings, a plug - in ring is connected to the lower side of the first mounting ring, the second mounting ring is provided with an annular slot for fitting and clamping the plug - in ring, a limiting ring is connected to one end of the inner walls of the upper - side screening box and the middle - section screening box, and the first mounting rings are respectively provided with limiting slots for fitting and plugging the limiting rings. Such a structural design can enhance the installation stability of the sieve plate and the sieve mesh, and at the same time facilitate the later disassembly of the sieve plate and the sieve mesh.

[0010] Further defined, a transfer rod is connected to the end of the output rod, and a plurality of bolts are connected between the transfer rod and the cross bar. Such a structural design can facilitate the quick installation and disassembly of the cross bar and its connecting components, and is convenient for the later maintenance and replacement of the components.

[0011] Further defined, anti - detachment discs are connected to both ends of the lifting threaded rod, and the anti - detachment disc at the bottom is rotatably connected to the screening power base. Such a structural design can enhance the installation stability and rotational stability of the lifting threaded rod, and can also prevent the nut sleeve and the lifting block from falling off the lifting threaded rod.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. The screening box in the present utility model includes an upper - side screening box, a middle - section screening box and a bottom - side screening box. Among them, the upper - side screening box is connected with connection components such as a dust - proof cover, a material - spreading motor, a cross bar and a mixing rod. With the cooperation of each component, after the cut tobacco enters the screening box, it is sequentially screened by the sieve plate and the sieve mesh, automatically screening out cut tobacco slices, cut tobacco and tobacco dust of different specifications. At the same time, the material - spreading motor drives the cross bar and the mixing rod to stir and disperse the cut tobacco agglomerated on the sieve plate, which can automatically disperse and lay flat the cut tobacco on the sieve plate when the cut tobacco forms a pile or agglomerates, thereby improving the screening efficiency and preventing the sieve plate from being blocked with materials;

[0014] 2. By connecting components such as a screening power base, a lifting motor, a transmission belt, a driven gear, a lifting threaded rod, a nut sleeve, and a lifting block, the distance position between the upper screening box, the middle screening box, and the bottom screening box can be automatically adjusted and fixed. During this process, it is not necessary for workers to lift the upper screening box and the middle screening box by hand while removing the sieve plate and the sieve mesh, which can improve the safety of using the device. At the same time, it is convenient for workers to easily remove the sieve plate and the sieve mesh for cleaning, preventing the screening efficiency from being affected by the blockage of the sieve plate and the sieve mesh and improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model can be further illustrated by the non-limiting embodiments given in the drawings;

[0016] Figure 1 is a schematic cross-sectional view of the overall structure of an embodiment of a tobacco leaf conditioning raw material screening device of the present utility model;

[0017] Figure 2 is an embodiment of a tobacco leaf conditioning raw material screening device of the present utility model Figure 1 structural schematic diagram of part A;

[0018] Figure 3 is an embodiment of a tobacco leaf conditioning raw material screening device of the present utility model Figure 1 structural schematic diagram of part B.

[0019] The main element symbols are explained as follows:

[0020] Screening power base 1;

[0021] Screening box 2;

[0022] Upper screening box 3, dust-proof cover 301, feed hopper 302;

[0023] Middle screening box 4, sieve plate 401;

[0024] Bottom screening box 5, sieve mesh 501, inclined platform 502;

[0025] Feeding cylinder 6;

[0026] Tightening ring 7;

[0027] Scattering motor 8, output rod 801, transfer rod 8011, bolt 8012, cross bar 802, stirring rod 803;

[0028] Lifting motor 9, transmission belt 901, driven gear 902, lifting threaded rod 903, anti-disengagement disc 9031, anti-disengagement round rod 9032, nut sleeve 904, lifting block 905;

[0029] First mounting ring 101, second mounting ring 102, plug-in ring 103, limiting ring 104. Detailed implementation mode

[0030] In order to enable those skilled in the art to better understand the present utility model, the technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] As Figures 1-3 shown, a tobacco silk-making raw material screening device of the present utility model includes a screening power base 1, the screening power base 1 is connected with a screening box 2, the screening box 2 includes an upper screening box 3, a middle-section screening box 4 and a bottom screening box 5, a feeding cylinder 6 is connected to one side of the upper screening box 3, the middle-section screening box 4 and the bottom screening box 5, a sieve plate 401 and a sieve mesh 501 are respectively inserted into the middle-section screening box 4 and the bottom screening box 5, tightening rings 7 are sleeved on the outer walls of the contact ends between the upper screening box 3, the middle-section screening box 4 and the bottom screening box 5, a dust-proof cover 301 is threadedly connected to the end of the upper screening box 3, a feeding hopper 302 is detachably connected to the dust-proof cover 301, a material-scattering motor 8 is connected to the dust-proof cover 301, the output rod 801 of the material-scattering motor 8 is rotatably connected to the dust-proof cover 301, a cross bar 802 is detachably connected to the end of the output rod 801, a plurality of mixing rods 803 are connected to the lower side of the cross bar 802, and the ends of the mixing rods 803 are fittingly connected to the surface of the sieve plate 401;

[0032] The screening power base 1 is connected with a lifting motor 9, the output end of the lifting motor 9 is connected with a driving gear, the driving gear is connected with two driven gears 902 through a transmission belt 901, the driven gears 902 are connected with lifting threaded rods 903, an anti-detachment round rod 9032 is fixedly connected to the middle section of the lifting threaded rod 903, threads with different pitches are arranged on the outer walls of the shaft bodies of the lifting threaded rods 903 on both sides of the anti-detachment round rod 9032, two matching nut sleeves 904 are connected to the outer walls of the shaft bodies of the lifting threaded rods 903, the nut sleeves 904 are connected with lifting blocks 905, and a single pair of opposite two lifting blocks 905 are respectively fixedly connected to both sides of the upper screening box 3 and the middle-section screening box 4.

[0033] In the embodiment of this case, the staff puts the cut tobacco into the screening box 2 from the feeding hopper 302. The cut tobacco first enters the upper screening box 3 and falls on the upper side of the sieve plate 401. The power end of the screening power base 1 is started to drive the whole screening box 2 to vibrate and screen. Cut tobacco of different specifications is screened from top to bottom through the sieve plate 401 and the sieve mesh 501 in sequence, and then is discharged and collected through the feeding cylinders 6 of the upper screening box 3, the middle-section screening box 4 and the bottom screening box 5. When the cut tobacco enters the upper screening box 3, the material-scattering motor 8 is started at the same time. The material-scattering motor 8 drives the cross bar 802 and the mixing rods 803 to rotate through the output rod 801. When the cross bar 802 and the mixing rods 803 rotate, the cut tobacco is stirred and dispersed, and the cut tobacco can be dispersed when it forms a pile, so that the cut tobacco is laid flat on the upper side of the sieve plate 401, thereby improving the screening efficiency and preventing the sieve plate 401 from being blocked;

[0034] When it is necessary to clean the sieve plate 401 and the sieve mesh 501, open each tightening ring 7, and then turn on the lifting motor 9 through the central controller. The lifting motor 9 drives the driving gear to rotate. When the driving gear rotates, it drives the driven gears 902 on both sides to rotate simultaneously through the transmission belt 901. When the driven gears 902 rotate, they drive the lifting threaded rods 903 to rotate accordingly. Since the outer walls of the shafts of the lifting threaded rods 903 on both sides of the anti - detachment round rod 9032 are provided with threads of different pitches, when the lifting threaded rods 903 rotate, they drive the upper nut sleeves 904 and the lifting blocks 905 to move upward for a longer distance, and drive the lower nut sleeves 904 and the lifting blocks 905 to move upward for a shorter distance. When multiple lifting blocks 905 move, they drive the upper screening box 3 and the middle - section screening box 4 to move upward simultaneously, which is convenient for the staff to easily take out the sieve plate 401 and the sieve mesh 501 for cleaning, preventing the screening efficiency from being affected due to the blockage of the sieve plate 401 and the sieve mesh 501, improving the cleaning efficiency. Moreover, in this process, the staff does not need to lift the upper screening box 3 and the middle - section screening box 4 by hand while taking out the sieve plate 401 and the sieve mesh 501, which can improve the safety of using the device.

[0035] Preferably, an inclined platform 502 is provided at the bottom of the inner wall of the bottom screening box 5. Such a structural design can achieve the effects of guiding materials and preventing the accumulation of bottom materials. In fact, other structural shapes that can prevent material accumulation and have a material - guiding effect can also be specifically considered according to the specific situation.

[0036] Preferably, first mounting rings 101 are connected to the shafts of the sieve plate 401 and the sieve mesh 501. Second mounting rings 102 are fixedly connected to the upper - end portions of the inner walls of the middle - section screening box 4 and the bottom screening box 5. An insertion ring 103 is connected to the lower side of the first mounting ring 101. The second mounting ring 102 is provided with an annular slot adapted to snap - fit the insertion ring 103. Limit rings 104 are connected to one end of the inner walls of the upper screening box 3 and the middle - section screening box 4. The first mounting ring 101 is provided with limit slots adapted to insert and limit the limit rings 104. Such a structural design can strengthen the installation stability of the sieve plate 401 and the sieve mesh 501, and at the same time facilitate the later disassembly of the sieve plate 401 and the sieve mesh 501. In fact, other structural shapes that can facilitate the installation and disassembly of the sieve plate 401 and the sieve mesh 501 and strengthen their installation stability can also be specifically considered according to the specific situation.

[0037] Preferably, a transfer rod 8011 is connected to the end of the output rod 801. A plurality of bolts 8012 are connected between the transfer rod 8011 and the cross - bar 802. Such a structural design can facilitate the quick installation and disassembly of the cross - bar 802 and its connection components, and is convenient for the later maintenance and replacement of components. In fact, other structural shapes that are convenient for installation and disassembly can also be specifically considered according to the specific situation.

[0038] Preferably, anti - detachment discs 9031 are connected to both ends of the lifting screw rod 903. The anti - detachment disc 9031 at the bottom is rotatably connected to the screening power base 1. Such a structural design can enhance the installation stability and rotational stability of the lifting screw rod 903, and can also prevent the nut sleeve 904 and the lifting block 905 from falling off the lifting screw rod 903. In fact, other structural shapes that can enhance stability can also be considered according to specific circumstances.

[0039] The above - mentioned embodiments only exemplarily illustrate the principles and effects of the present invention, rather than being used to limit the present invention. Any person familiar with this technology can modify or change the above - mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A tobacco primary processing material screening device, comprising a screening power base (1), the screening power base (1) is connected to a screening box (2), the screening box (2) includes an upper screening box (3), a middle screening box (4) and a bottom screening box (5), one side of the upper screening box (3), the middle screening box (4) and the bottom screening box (5) is connected with a feeding tube (6), the middle screening box (4) and the bottom screening box (5) are respectively inserted with a sieve plate (401) and a sieve mesh (501), and the outer walls of the contact ends between the upper screening box (3), the middle screening box (4) and the bottom screening box (5) are all sleeved with tightening rings (7), characterized in that: The end of the upper screening box (3) is connected with a dust-proof cover (301) by thread. The dust-proof cover (301) is detachably connected with a feed hopper (302). The dust-proof cover (301) is connected with a material spreading motor (8). The output rod (801) of the material spreading motor (8) is rotatably connected to the dust-proof cover (301). The end of the output rod (801) is detachably connected with a cross bar (802). A plurality of mixing rods (803) are connected to the lower side of the cross bar (802). The ends of the mixing rods (803) are fitted and connected to the surface of the sieve plate (401). The screening power base (1) is connected with a lifting motor (9). The output end of the lifting motor (9) is connected with a driving gear. The driving gear is connected with two driven gears (902) through a transmission belt (901). The driven gears (902) are connected with lifting screw rods (903). An anti-disengagement round rod (9032) is fixedly connected to the middle section of the lifting screw rod (903). Threads with different pitches are provided on the outer walls of the shaft bodies of the lifting screw rods (903) on both sides of the anti-disengagement round rod (9032). Two matching nut sleeves (904) are connected to the outer walls of the shaft bodies of the lifting screw rods (903). The nut sleeves (904) are connected with lifting blocks (905). Each group of two opposite lifting blocks (905) are respectively fixedly connected to both sides of the upper screening box (3) and the middle section screening box (4).

2. The tobacco cuttings raw material screening device according to claim 1, characterized in that: An inclined platform (502) is provided at the bottom of the inner wall of the bottom screening box (5).

3. The tobacco leaf raw material screening device according to claim 2, characterized in that: First mounting rings (101) are connected to the shaft bodies of the sieve plate (401) and the sieve mesh (501). Second mounting rings (102) are fixedly connected to the upper end parts of the inner walls of the middle section screening box (4) and the bottom screening box (5). An inserting ring (103) is connected to the lower side of the first mounting ring (101). An annular slot for fitting and clamping the inserting ring (103) is provided on the second mounting ring (102). Limit rings (104) are connected to one end of the inner walls of the upper screening box (3) and the middle section screening box (4). Limit slots for fitting and inserting the limit rings (104) are provided on the first mounting rings (101).

4. A tobacco cuttings raw material screening device according to claim 3, characterized in that: The end of the output rod (801) is connected with a transfer rod (8011). A plurality of bolts (8012) are connected between the transfer rod (8011) and the cross bar (802).

5. The tobacco cuttings raw material screening device according to claim 4, characterized in that: Anti-disengagement discs (9031) are connected to both ends of the lifting screw rod (903). The anti-disengagement disc (9031) at the bottom is rotatably connected to the screening power base (1).

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