Tobacco stem separation and screening recovery device

Abstract

The present invention relates to the field of tobacco screening. The present invention discloses a device for screening and recovering tobacco stems. The problem to be solved by the present invention is that the existing tobacco debris is mostly screened by air separation during the screening process, and a large amount of tobacco will still remain in the tobacco debris. The collection efficiency of tobacco will be greatly reduced during the secondary air separation, and it is not convenient to collect and process the screened debris. The present invention can make the tobacco debris continuously put into the lower hopper gradually accumulate to a certain amount through the transmission device and the secondary screening device, and then concentrate on processing the tobacco in the accumulated stems, thereby improving the efficiency of screening tobacco from the residual stems, and facilitating the operator to collect the screened stems and remove the waste.

Description

Technical Field

[0001] The invention relates to the field of shredded tobacco screening, in particular to a shredded tobacco screening and recovery device for separating stems from shredded tobacco. Background Art

[0002] During the production of cigarettes, the raw materials of cigarettes mainly contain shredded tobacco, stems and other impurities. In order to improve the intrinsic quality of cigarettes, the raw materials need to be separated from the stems when they are fed into the cigarette making machine to reduce the stem content. Air separation is carried out by using the difference in the suspension speed of shredded tobacco, stem shredded tobacco and expanded tobacco in the airflow. The principle is that the weight of shredded tobacco, stem shredded tobacco and expanded tobacco is different, and their suspension speed is also different.

[0003] The existing patent (Announcement No.: CN115739634A) discloses a tobacco stem separation vibration trough device for a cigarette making machine, comprising a vibration trough body equipped with a vibration motor, a first sieve hole group and a second sieve hole group are arranged in sequence along the conveying direction of the vibration trough body, a first funnel and a second funnel are respectively installed below the first sieve hole group and at the conveying end of the vibration trough body, the first funnel and the second funnel are both connected to the centralized stem return channel, a stem collection box is installed below the second sieve hole group; a tobacco adsorption and recovery device is installed above the vibration trough body. The stems after secondary sorting from the cigarette making machine are received by the vibration trough body, and the vibration motor drives the vibration trough body to vibrate, so that the thick stems, thin stems and tobacco are separated, so that the lighter tobacco is adsorbed and collected by the tobacco adsorption and recovery device, and the thin stems fall into the first funnel through the first sieve hole group, the thick stems fall into the second funnel from the end of the vibration trough body, and the smaller tobacco and stems fall into the second sieve hole group, so that the tobacco and stems are sorted and collected. In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art that have not been solved: the existing tobacco debris is mostly screened by air separation during the screening process, and a large amount of tobacco will still remain in the tobacco debris. The collection efficiency of the tobacco will be greatly reduced during the secondary air separation, and it is not convenient to collect and process the screened debris. Summary of the invention

[0004] The object of the present invention is to provide a shredded tobacco screening and recovery device for separating stems to solve the problems raised in the above background technology. To achieve the above object, the present invention provides the following technical solutions: a shredded tobacco screening and recovery device for separating stems, comprising a horizontally arranged bearing platform, a lower hopper is fixedly arranged on the top of the bearing platform, a screening cavity is opened on the bearing platform below the lower hopper, a driving device is arranged on the bearing platform, the driving device is rotationally matched with the bearing platform, a vibration device is also arranged on the bearing platform, the vibration device is transmission matched with the driving device, the vibration device is located in the screening cavity, an unfolding device is also arranged on the bearing platform, the unfolding device is slidably matched with the outer wall of the bearing platform, the unfolding device is arranged toward the screening cavity, and the unfolding device is located above the vibration device, the top of the bearing platform is located above the screening cavity and a screening device is arranged, a charging box is also fixedly arranged on the bearing platform, and a secondary screening device is arranged in the charging box.

[0005] Preferably, the driving device includes a driving motor fixedly mounted on the outer wall of the supporting platform, the main shaft of the driving motor is connected to the driving disk, a rotating rod is also rotatably mounted on the outer wall of the supporting platform, a transmission disk is fixedly connected to the rotating rod, a driving belt is sleeved between the driving disk and the transmission disk, a connecting rod is eccentrically mounted on the end surface of the transmission disk, a moving block is slidably mounted on the outer wall of the supporting platform, and the moving block is hingedly engaged with an end of the connecting rod away from the transmission disk.

[0006] Preferably, the vibration device includes rotating plates relatively arranged on the inner wall of the bearing platform, a fixed shaft is fixedly connected between the two rotating plates, the fixed shaft is eccentrically arranged between the two rotating plates, one of the rotating plates is fixedly connected to the rotating rod, a vibrating screen plate is fixedly connected to the fixed shaft, the vibrating screen plate is located in the sub-screening cavity, and the vibrating screen plate is located below the lower hopper, the conveying end of the vibrating screen plate is located in the loading box, a bearing frame is fixedly connected to the bearing platform below the vibrating screen plate, a support frame is hingedly provided on the bearing frame, the support frame is hingedly matched with the bottom of the vibrating screen plate, a telescopic frame is also hingedly provided at the bottom of the vibrating screen plate, the end of the telescopic frame away from the vibrating screen plate is hingedly matched with the bearing frame, and a connecting spring is also connected to the telescopic frame.

[0007] Preferably, the unfolding device includes a moving frame fixedly arranged on the outer wall of the moving block, the moving frame slidingly cooperates with the outer wall of the load-bearing platform, a support plate is also fixedly arranged on the outer wall of the load-bearing platform, the moving frame slidingly cooperates with the support plate, rotating rods are arranged on the support plates on both sides of the moving frame for relative rotation, rotating gears are fixedly arranged on the rotating rods, teeth are arranged on both sides of the moving frame, the teeth are meshed with two rotating gears, unfolding plates are relatively slidably arranged on the side walls of the support plates, hinged frames are hingedly arranged on the two unfolding plates, the hinged frames are hingedly cooperated with the rotating rods and the unfolding plates, and the unfolding plates are located above the vibrating screen plates.

[0008] Preferably, the screening device includes an exhaust fan fixedly arranged on the top of the supporting platform, a rotating motor is fixedly connected to the outer wall of the supporting platform, the main shaft of the rotating motor is connected to the exhaust fan shaft, the exhaust end of the exhaust fan is arranged toward the screening chamber, and a material storage box is also fixedly arranged on the top of the supporting platform, and the air outlet end of the exhaust fan is connected to the material storage box.

[0009] Preferably, a transmission device is also provided on the top of the bearing platform, and the transmission device is located between the driving device and the secondary screening device. The transmission device includes a positioning frame fixedly arranged on the moving block, and a pushing frame is hingedly arranged on the positioning frame, and a tension spring is arranged between the pushing frame and the positioning frame. A sliding plate is slidably arranged on the top of the bearing platform, and slots are provided on the sliding plate at equal intervals. The pushing frame extends toward the slots, and an inclined resistance plate is fixedly arranged on the side wall of the bearing platform below the sliding plate, and the pushing frame contacts the inclined surface of the resistance plate, and a limiting member is also arranged on the sliding plate.

[0010] Preferably, the limit member includes a limit block rotatably arranged on the sliding plate, a torsion spring is arranged between the limit block and the sliding plate, a limit frame is fixedly arranged on the top of the bearing platform, a limit slot is provided on the limit frame, two ends of the limit slot are vertical, and clamping slots are equidistantly arranged on the limit slot, and the two ends of the vertical limit slot are inclined, the limit block is fixedly connected with a clamping rod, the clamping rod is located in the limit slot, a limit opening and a positioning opening are provided on the limit block, and a locking block is hingedly arranged on the sliding plate, the locking block contacts the limit opening and the positioning opening on the limit block, and the bottom of the sliding plate is also fixedly connected with a movable tooth plate, the movable tooth plate is slidably matched with the outer wall of the bearing platform, and a pressure spring is connected between the movable tooth plate and the bearing platform.

[0011] Preferably, the secondary screening device includes a one-way shaft rotatably arranged on the top of the supporting platform, the one-way shaft is fixedly connected to the first connecting gear and the second connecting gear, the first connecting gear meshes with the movable tooth plate, and a winding rod is also rotatably arranged on the supporting platform, the winding rod is fixedly connected to the pinion, the second connecting gear meshes with the pinion, the winding rod is fixedly connected to the rotating disk, the rotating disk is relatively slidably arranged with a stirring frame, the stirring frame extends toward the charging box, the two stirring frames are both provided with connecting rods that slide with the rotating disk, the connecting rods are sleeved with elastic springs, the two ends of the elastic spring are respectively connected to the top of the rotating disk and the stirring frame, the supporting platform is also fixedly provided with an inclined inclined plate, the top of the stirring frame is provided with a pulley, the pulley contacts the surface of the inclined plate, and a secondary adsorber is also provided on the outer wall of the charging box.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the present invention, the vibrating screen plate can shake the tobacco debris on the top surface of the vibrating screen plate driven by the fixed shaft. Compared with the small stems and tobacco, the air suspension speed difference is smaller. Therefore, when the vibrating screen plate shakes, the tobacco in the tobacco debris can be shaken out in the screening chamber and floated into the screening chamber, so that the screening device located above the screening chamber can absorb the tobacco floating in the screening chamber, thereby separating the tobacco from the tobacco debris.

[0014] In the present invention, when tobacco debris is on the surface of the vibrating screen plate, the tobacco debris accumulates on the vibrating screen plate, and the tobacco debris accumulated on the vibrating screen plate can be diffused on the vibrating screen plate by expanding outwards through the two unfolding plates, so that when the vibrating screen plate shakes the tobacco debris, the tobacco in the tobacco debris can be fully exposed in the screening cavity, so that the tobacco can be more effectively separated from the tobacco debris.

[0015] In the present invention, each time the moving block reciprocates, the sliding plate will be moved reciprocally through the pushing frame, so that when the tobacco crumbs intermittently put into the lower hopper are unfolded by the unfolding device, the distance moved by the sliding plate corresponds to the number of times the tobacco crumbs are put into the lower hopper, thereby facilitating the secondary screening device to centrally process the stems in the tobacco crumbs.

[0016] In the present invention, when the pressure spring is released during the power accumulation process, it can drive the sliding plate to move and reset. When the sliding plate moves and resets, the clamping rod contacts the inclined end of the other end of the limiting groove, which will cause the limiting opening on the limiting block to re-dock with the locking block, thereby facilitating the sliding plate to continue to move when subsequent tobacco debris is intermittently put into the lower hopper. Through this arrangement, after a certain amount of tobacco debris continuously put into the lower hopper is gradually accumulated, the tobacco in the accumulated tobacco stems can be processed intensively, thereby improving the efficiency of screening tobacco from the residual tobacco stems, and facilitating the operator to collect the screened tobacco stems and remove the waste.

[0017] In the present invention, the stirring rack is located in the charging box and can drive the filtered tobacco debris in the charging box to rotate and stir to continuously lift the debris, thereby improving the efficiency of tobacco debris screening. When the tobacco debris in the charging box floats, the tobacco therein will be adsorbed by the secondary adsorber, thereby collecting the tobacco remaining in the tobacco debris, completing the screening operation of the tobacco debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a partial three-dimensional structural cross-sectional view of the present invention;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the driving device and the vibration device of the present invention;

[0021] Figure 4 The three-dimensional structure of the vibration device of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 5 The three-dimensional structure of the vibration device of the present invention is shown in FIG. Figure 2 ;

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the driving device and the unfolding device of the present invention;

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the unfolding device of the present invention;

[0025] Figure 8 The three-dimensional structure of the transmission device of the present invention is shown in FIG. Figure 1 ;

[0026] Fig. 9 The three-dimensional structure of the transmission device of the present invention is shown in FIG. Figure 2 ;

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the limiting member of the present invention;

[0028] Fig.11 It is a cross-sectional view of the three-dimensional structure of the limiting member of the present invention;

[0029] Fig.12 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0030] Fig.13 It is a schematic diagram of the partial three-dimensional structure of the two-stage screening device of the present invention.

[0031] In the figure: 1, bearing platform; 11, lower hopper; 12, screening chamber; 13, charging box; 2, driving device; 21, driving motor; 22, driving plate; 23, rotating rod; 24, transmission plate; 25, driving belt; 26, connecting rod; 27, moving block; 3, vibrating device; 31, rotating plate; 32, fixed shaft; 33, vibrating screen plate; 34, bearing frame; 35, supporting frame; 36, telescopic frame; 37, connecting spring; 4, unfolding device; 41, moving frame; 42, supporting plate; 43, rotating rod; 44, rotating gear; 45, teeth; 46, unfolding plate; 47, articulated frame; 5, screening device; 51, exhaust fan; 52, rotating motor; 53, storage box; 6. Transmission device; 61. Positioning frame; 62. Pushing frame; 63. Tension spring; 64. Sliding plate; 65. Slot; 66. Contact plate; 7. Limiting member; 71. Limiting block; 72. Torsion spring; 73. Limiting frame; 74. Limiting slot; 75. Connecting slot; 76. Connecting rod; 77. Limiting opening; 78. Positioning opening; 79. Locking block; 710. Moving tooth plate; 711. Pressure spring; 8. Secondary screening device; 81. One-way shaft; 82. First connecting gear; 83. Second connecting gear; 84. Winding rod; 85. Pinion; 86. Rotating disk; 87. Stirring frame; 88. Connecting rod; 89. Elastic spring; 810. Inclined disk; 811. Secondary adsorber. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figures 1 to 13The present invention provides a technical solution: a shredded tobacco screening and recovery device for separating stems, comprising a horizontally arranged supporting platform 1, a lower hopper 11 is fixedly arranged on the top of the supporting platform 1, a screening cavity 12 is opened on the supporting platform 1 below the lower hopper 11, a driving device 2 is arranged on the supporting platform 1, and the driving device 2 is rotatably matched with the supporting platform 1, a vibrating device 3 is also arranged on the supporting platform 1, and the vibrating device 3 is transmission matched with the driving device 2, and the vibrating device 3 is located in the screening cavity 12, an unfolding device 4 is also arranged on the supporting platform 1, and the unfolding device 4 is slidably matched with the outer wall of the supporting platform 1, the unfolding device 4 is arranged toward the screening cavity 12, and the unfolding device 4 is located above the vibrating device 3, and the top of the supporting platform 1 is located above the screening cavity 12 and a screening device 5 is arranged, and a charging box 13 is also fixedly arranged on the supporting platform 1, and a secondary screening device 8 is arranged in the charging box 13.

[0034] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the driving device 2 includes a driving motor 21 fixedly arranged on the outer wall of the bearing platform 1, the main shaft of the driving motor 21 is connected to the driving disk 22, a rotating rod 23 is also rotatably arranged on the outer wall of the bearing platform 1, a transmission disk 24 is fixedly connected to the rotating rod 23, a driving belt 25 is sleeved between the driving disk 22 and the transmission disk 24, a connecting rod 26 is eccentrically arranged on the end surface of the transmission disk 24, a moving block 27 is slidably arranged on the outer wall of the bearing platform 1, and the moving block 27 is hingedly matched with one end of the connecting rod 26 away from the transmission disk 24;

[0035] The vibration device 3 includes a rotating disk 31 relatively arranged on the inner wall of the bearing platform 1, a fixed shaft 32 is fixedly connected between the two rotating disks 31, and the fixed shaft 32 is eccentrically arranged between the two rotating disks 31, one of the rotating disks 31 is fixedly connected to the rotating rod 23, a vibrating screen plate 33 is fixedly connected to the fixed shaft 32, the vibrating screen plate 33 is located in the sub-screen cavity 12, and the vibrating screen plate 33 is located below the lower hopper 11, and the conveying end of the vibrating screen plate 33 is located in the charging box 13, and a bearing frame 34 is fixedly connected to the bearing platform 1 below the vibrating screen plate 33, and a support frame 35 is hingedly provided on the bearing frame 34, and the support frame 35 is hingedly matched with the bottom of the vibrating screen plate 33, and a telescopic frame 36 is also hingedly provided at the bottom of the vibrating screen plate 33, and the end of the telescopic frame 36 away from the vibrating screen plate 33 is hingedly matched with the bearing frame 34, and a connecting spring 37 is also connected to the telescopic frame 36;

[0036] When the tobacco in the tobacco debris is separated, the tobacco debris is put into the top surface of the vibrating screen plate 33 from the lower hopper 11, and the driving disc 22 is rotated by the driving motor 21, and the driving disc 22 rotates through the driving belt 25 to rotate the transmission disc 24, and the rotation of the transmission disc 24 drives the rotating rod 23 to rotate, and the rotating rod 23 drives the rotating disc 31 to rotate, and the fixed shaft 32 arranged between the two rotating discs 31 rotates around the center of the two rotating discs 31, and the vibrating screen plate 33 fixedly arranged on the fixed shaft 32 will shake under the drive of the fixed shaft 32, and the bearing The support frame 35 and the telescopic frame 36 on the carrier 34 can support and shake the bottom of the vibrating screen plate 33, so that the vibrating screen plate 33 can shake the tobacco debris on the top surface of the vibrating screen plate 33 under the drive of the fixed shaft 32. Compared with the small stems and tobacco, the air suspension speed difference is smaller. Therefore, when the vibrating screen plate 33 shakes, the tobacco in the tobacco debris can be shaken out of the screening chamber 12 and floated into the screening chamber 12, so that the screening device 5 located above the screening chamber 12 can absorb the tobacco floating in the screening chamber 12, thereby separating the tobacco from the tobacco debris.

[0037] In this embodiment, Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the unfolding device 4 includes a moving frame 41 fixedly arranged on the outer wall of the moving block 27, the moving frame 41 is slidably matched with the outer wall of the bearing platform 1, and a support plate 42 is also fixedly arranged on the outer wall of the bearing platform 1, the moving frame 41 is slidably matched with the support plate 42, and rotating rods 43 are relatively rotated on both sides of the moving frame 41 on the support plate 42, and rotating gears 44 are fixedly arranged on the rotating rods 43, and teeth 45 are arranged on both sides of the moving frame 41, and the teeth 45 are meshed with two rotating gears 44, and unfolding plates 46 are relatively slidably arranged on the side walls of the support plate 42, and hinged frames 47 are hingedly arranged on the two unfolding plates 46, and the hinged frames 47 are hingedly matched with the rotating rods 43 and the unfolding plates 46, and the unfolding plates 46 are located above the vibrating screen plate 33;

[0038] When tobacco scraps are put into the vibrating screen plate 33 from the lower hopper 11, the driving motor 21 drives the transmission disc 24 to rotate, and the transmission disc 24 drives the connecting rod 26 to pull the moving block 27 to move up and down reciprocatingly. When the moving block 27 moves down, the moving block 27 drives the moving frame 41 to move down. When the moving frame 41 moves down, the teeth 45 on both sides of the moving frame 41 cause the rotating gears 44 on the two rotating rods 43 to rotate. At this time, the two rotating rods 43 drive the two articulated frames 47 to expand outward, and the two articulated frames 47 respectively drive the two rotating rods 43 to expand outward. The two expansion plates 46 are moved to expand outward, and the initial positions of the two expansion plates 46 are located in the middle of the vibrating screen plate 33. When the tobacco debris is on the surface of the vibrating screen plate 33, the tobacco debris is accumulated on the vibrating screen plate 33. The two expansion plates 46 expand outward, and the tobacco debris accumulated on the vibrating screen plate 33 can be spread on the vibrating screen plate 33. When the vibrating screen plate 33 shakes the tobacco debris, the tobacco in the tobacco debris can be fully exposed in the screening chamber 12, so that the tobacco can be more effectively separated from the tobacco debris.

[0039] In this embodiment, Figure 1 , Figure 2 and Fig.12 As shown, the sub-screening device 5 includes an exhaust fan 51 fixedly arranged on the top of the carrier platform 1, a rotating motor 52 is fixedly connected to the outer wall of the carrier platform 1, the main shaft of the rotating motor 52 is connected to the exhaust fan 51 axis, the exhaust end of the exhaust fan 51 is arranged toward the sub-screening chamber 12, and a material storage box 53 is also fixedly arranged on the top of the carrier platform 1, and the air outlet end of the exhaust fan 51 is connected to the material storage box 53;

[0040] When the vibration device 3 shakes the tobacco debris into the screening chamber 12, the exhaust fan 51 can be driven by the rotating motor 52, and the exhaust end of the exhaust fan 51 can suck the tobacco in the screening chamber 12 into the exhaust fan 51 and then suck the tobacco into the storage box 53 through the air outlet end, and the tobacco is collected by the storage box 53 to complete the collection of the tobacco.

[0041] In this embodiment, Figure 1 , Figure 8 and Fig. 9As shown, a transmission device 6 is also provided on the top of the bearing platform 1, and the transmission device 6 is located between the driving device 2 and the secondary screening device 8. The transmission device 6 includes a positioning frame 61 fixedly arranged on the moving block 27, and a pushing frame 62 is hingedly arranged on the positioning frame 61. A tension spring 63 is arranged between the pushing frame 62 and the positioning frame 61. A sliding plate 64 is slidably arranged on the top of the bearing platform 1, and slots 65 are opened at equal intervals on the sliding plate 64. The pushing frame 62 extends toward the slots 65. An obliquely arranged resistance plate 66 is fixedly arranged on the side wall of the bearing platform 1 below the sliding plate 64, and the pushing frame 62 contacts the inclined surface of the resistance plate 66. A limiting member 7 is also arranged on the sliding plate 64;

[0042] When the transmission disc 24 drives the connecting rod 26 to pull the moving block 27 to move up and down reciprocatingly, the moving block 27 will drive the pushing frame 62 on the positioning frame 61 to move reciprocatingly. When the pushing frame 62 moves down, the pushing frame 62 will pass through the slot 65 on the sliding plate 64. When the pushing frame 62 passes through the slot 65, it will contact the resistance plate 66 arranged at an angle below. At this time, the pushing frame 62 will deflect on the positioning frame 61. After the pushing frame 62 deflects, it drives the sliding plate 64 to move through the slot 65. Each time the moving block 27 reciprocates, the sliding plate 64 will be reciprocated through the pushing frame 62, so that when the tobacco fragments intermittently put into the lower hopper 11 are unfolded by the unfolding device 4, the moving distance of the sliding plate 64 corresponds to the number of times the tobacco fragments are put into the lower hopper 11, so that the secondary screening device 5 can centrally process the stems in the tobacco fragments.

[0043] In this embodiment, Figure 1 , Fig.10 and Fig.11 As shown, the limiting member 7 includes a limiting block 71 rotatably arranged on the sliding plate 64, a torsion spring 72 is arranged between the limiting block 71 and the sliding plate 64, a limiting frame 73 is fixedly arranged on the top of the supporting platform 1, a limiting slot 74 is provided on the limiting frame 73, the two ends of the limiting slot 74 are vertical, and the limiting slot 74 is evenly spaced with a clamping slot 75, the two ends of the vertical limiting slot 74 are inclined, and the limiting block 71 is fixedly connected with a clamping rod 76, the clamping rod 76 is located in the limiting groove 74, the limiting block 71 is provided with a limiting opening 77 and a positioning opening 78, the sliding plate 64 is hingedly provided with a locking block 79, the locking block 79 is in contact with the limiting opening 77 and the positioning opening 78 on the limiting block 71, and the bottom of the sliding plate 64 is also fixedly connected with a moving tooth plate 710, the moving tooth plate 710 is slidably matched with the outer wall of the bearing platform 1, and a pressure spring 711 is connected between the moving tooth plate 710 and the bearing platform 1;

[0044] When the sliding plate 64 moves, the clamping rod 76 on the upper limit block 71 of the sliding plate 64 will slide in the limit groove 74 on the limit frame 73, and the locking block 79 will be located in the positioning hole 78 on the limit block 71. When the sliding plate 64 moves, the clamping rod 76 on the limit block 71 will be clamped into the clamping groove 75 in the limit groove 74. When the clamping rod 76 is in the clamping groove 75, the clamping groove 75 will limit the clamping rod 76. Since the clamping rod 76 is set on the limit block 71, the limit block 71 is set on the sliding plate 64. The sliding plate 64 is then restricted on the limiting frame 73, and as the sliding plate 64 continues to move, the sliding plate 64 drives the moving tooth plate 710 to slide on the outer wall of the supporting platform 1, and the pressure spring 711 connected between the moving tooth plate 710 and the supporting platform 1 is in a state of storing force. When the tobacco debris put into the lower hopper 11 reaches a specified amount, the sliding plate 64 drives the limiting block 71 to move to the end of the limiting groove 74. At this time, the clamping rod 76 on the limiting block 71 will conflict with the inclined inner wall of the limiting groove 74. When the locking block 79 is locked, the locking rod 76 on the limit block 71 will not be affected by the torsion spring 72 and will deflect in the direction of the locking groove 75. At this time, the pressure spring 711 in the process of accumulating force can be released, thereby driving the sliding plate 64 to move and return to its original position. When the sliding plate 64 moves and returns to its original position, When the clamping rod 76 contacts the inclined end of the other end of the limiting groove 74, the limiting opening 77 on the limiting block 71 will re-dock with the locking block 79, so that the sliding plate 64 can continue to move when subsequent tobacco debris is intermittently put into the lower hopper 11. Through this arrangement, the tobacco debris continuously put into the lower hopper 11 can be gradually accumulated to a certain amount, and the tobacco in the accumulated tobacco stems can be processed intensively, thereby improving the efficiency of screening tobacco from the residual tobacco stems, and making it convenient for operators to collect the screened tobacco stems and remove the waste.

[0045] In this embodiment, Figure 1 , Fig.12 and Fig.13As shown, the secondary screening device 8 includes a one-way shaft 81 rotatably arranged on the top of the supporting platform 1, and a first connecting gear 82 and a second connecting gear 83 are fixedly connected to the one-way shaft 81, and the first connecting gear 82 is meshed with the movable tooth plate 710. A winding rod 84 is also rotatably arranged on the supporting platform 1, and a pinion 85 is fixedly connected to the winding rod 84, and the second connecting gear 83 is meshed with the pinion 85. A rotating disk 86 is fixedly connected to the winding rod 84, and a stirring frame is relatively slidably arranged on the rotating disk 86. 87, the stirring rack 87 extends toward the inside of the charging box 13, and the two stirring racks 87 are both provided with connecting rods 88 that are slidably matched with the rotating disk 86, and the connecting rods 88 are sleeved with elastic springs 89, and the two ends of the elastic springs 89 are respectively connected to the top of the rotating disk 86 and the stirring rack 87, and the supporting platform 1 is also fixedly provided with an inclined inclined plate 810, and the top of the stirring rack 87 is provided with a pulley, and the pulley is in contact with the surface of the inclined plate 810, and the outer wall of the charging box 13 is also provided with a secondary adsorber 811;

[0046] When the sliding plate 64 drives the moving tooth plate 710 to move toward the charging box 13, the moving tooth plate 710 will not drive the one-way shaft 81 to rotate when it contacts the first connecting gear 82. When the pressure spring 711 drives the moving tooth plate 710 to reset, the moving tooth plate 710 moves to make the first connecting gear 82 rotate, which will drive the one-way shaft 81 to rotate. The rotation of the one-way shaft 81 drives the second connecting gear 83 to rotate. The second connecting gear 83 drives the pinion 85 to rotate. When the pinion 85 drives the winding rod 84 to rotate, the winding rod 84 drives the rotating disk 86 to rotate. The stirring frame 87 provided on the rotating disk 86 will rotate around the rotating disk 86. The stirring frame 87 rotates in a circle, and during the rotation, the pulley on the stirring frame 87 will contact the inclined plate 810, and under the restriction of the inclined plate 810 and the elastic spring 89, the stirring frame 87 will be driven to move up and down reciprocatingly. At this time, the stirring frame 87 is located in the charging box 13, which will drive the filtered tobacco debris in the charging box 13 to rotate and stir, and the debris will be continuously lifted, thereby improving the efficiency of tobacco debris screening, and when the tobacco debris in the charging box 13 floats, the tobacco therein will be adsorbed by the secondary adsorber 811, so that the tobacco remaining in the tobacco debris will be collected, and the screening operation of the tobacco debris will be completed.

[0047] The use method and advantages of the present invention: The use method of the stem shred separation and tobacco sieving and recycling device has the following working process:

[0048] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 As shown in the figure: when separating the tobacco from the tobacco debris, the tobacco debris is put from the lower hopper 11 into the top surface of the vibrating screen plate 33, and the driving motor 21 drives the driving disc 22 to rotate, and the driving disc 22 rotates through the driving belt 25 to rotate the transmission disc 24, and the rotation of the transmission disc 24 drives the rotating rod 23 to rotate, and the rotating rod 23 drives the rotating disc 31 to rotate, and the fixed shaft 32 set between the two rotating discs 31 will rotate around the center of the two rotating discs 31, and the vibrating screen plate 33 fixed on the fixed shaft 32 will shake under the drive of the fixed shaft 32 The support frame 35 and the telescopic frame 36 on the carrier frame 34 can support and shake the bottom of the vibrating screen plate 33, so that the vibrating screen plate 33 can shake the tobacco debris on the top surface of the vibrating screen plate 33 under the drive of the fixed shaft 32. Compared with the tobacco, the air suspension speed difference of the small stems is smaller. Therefore, when the vibrating screen plate 33 is shaken, the tobacco in the tobacco debris can be shaken out of the sub-screen chamber 12 and floated into the sub-screen chamber 12, so that the sub-screen device 5 located above the sub-screen chamber 12 can absorb the tobacco floating in the sub-screen chamber 12, thereby separating the tobacco from the tobacco debris;

[0049] When tobacco scraps are put into the vibrating screen plate 33 from the lower hopper 11, the driving motor 21 drives the transmission disc 24 to rotate, and the transmission disc 24 drives the connecting rod 26 to pull the moving block 27 to move up and down reciprocatingly. When the moving block 27 moves down, the moving block 27 drives the moving frame 41 to move down. When the moving frame 41 moves down, the teeth 45 on both sides of the moving frame 41 cause the rotating gears 44 on the two rotating rods 43 to rotate. At this time, the two rotating rods 43 drive the two articulated frames 47 to expand outward, and the two articulated frames 47 respectively drive the two rotating rods 43 to expand outward. The two expansion plates 46 are moved to expand outwards, and the initial positions of the two expansion plates 46 are located in the middle of the vibrating screen plate 33. When the tobacco debris is on the surface of the vibrating screen plate 33, the tobacco debris is accumulated on the vibrating screen plate 33. The two expansion plates 46 expand outwards to spread the tobacco debris accumulated on the vibrating screen plate 33. Therefore, when the vibrating screen plate 33 shakes the tobacco debris, the tobacco in the tobacco debris can be fully exposed in the sub-screen cavity 12, so that the tobacco can be more effectively separated from the tobacco debris.

[0050] When the vibration device 3 shakes the tobacco debris into the sub-screening chamber 12, the exhaust fan 51 can be driven by the rotating motor 52 to operate, and the exhaust end of the exhaust fan 51 can suck the tobacco in the sub-screening chamber 12 into the exhaust fan 51, and then suck the tobacco into the storage box 53 through the air outlet end, and the tobacco is collected by the storage box 53, thereby completing the collection of the tobacco;

[0051] When the transmission disc 24 drives the connecting rod 26 to pull the moving block 27 to move up and down reciprocatingly, the moving block 27 will drive the pushing frame 62 on the positioning frame 61 to move reciprocatingly. When the pushing frame 62 moves down, the pushing frame 62 will pass through the slot 65 on the sliding plate 64. When the pushing frame 62 passes through the slot 65, it will contact the obliquely arranged abutment plate 66 below. At this time, the pushing frame 62 will deflect on the positioning frame 61. After the pushing frame 62 deflects, it drives the sliding plate 64 to move through the slot 65. Each time the moving block 27 reciprocates, the sliding plate 64 will be reciprocated through the pushing frame 62, so that when the tobacco scraps intermittently put into the lower hopper 11 are unfolded by the unfolding device 4, the moving distance of the sliding plate 64 corresponds to the number of times the tobacco scraps are put into the lower hopper 11, so that the secondary screening device 5 can centrally process the stems in the tobacco scraps.

[0052] When the sliding plate 64 moves, the clamping rod 76 on the upper limit block 71 of the sliding plate 64 will slide in the limit groove 74 on the limit frame 73, and the locking block 79 will be located in the positioning hole 78 on the limit block 71. When the sliding plate 64 moves, the clamping rod 76 on the limit block 71 will be clamped into the clamping groove 75 in the limit groove 74. When the clamping rod 76 is in the clamping groove 75, the clamping groove 75 will limit the clamping rod 76. Since the clamping rod 76 is set on the limit block 71, the limit block 71 is set on the sliding plate 64. The sliding plate 64 is then restricted on the limiting frame 73, and as the sliding plate 64 continues to move, the sliding plate 64 drives the moving tooth plate 710 to slide on the outer wall of the supporting platform 1, and the pressure spring 711 connected between the moving tooth plate 710 and the supporting platform 1 is in a state of storing force. When the tobacco debris put into the lower hopper 11 reaches a specified amount, the sliding plate 64 drives the limiting block 71 to move to the end of the limiting groove 74. At this time, the clamping rod 76 on the limiting block 71 will conflict with the inclined inner wall of the limiting groove 74. When the locking block 79 is locked, the locking rod 76 on the limit block 71 will not be affected by the torsion spring 72 and will deflect in the direction of the locking groove 75. At this time, the pressure spring 711 in the process of accumulating force can be released, thereby driving the sliding plate 64 to move and return to its original position. When the sliding plate 64 moves and returns to its original position, After the clamping rod 76 contacts the inclined end of the other end of the limiting groove 74, the limiting opening 77 on the limiting block 71 and the locking block 79 will be re-connected, so that the sliding plate 64 can continue to move when the subsequent tobacco scraps are intermittently put into the lower hopper 11. Through this arrangement, after a certain amount of tobacco scraps continuously put into the lower hopper 11 are gradually accumulated, the tobacco in the accumulated tobacco stems can be processed intensively, thereby improving the efficiency of screening tobacco from the residual tobacco stems, and facilitating the operator to collect the screened tobacco stems and take out the waste;

[0053] When the sliding plate 64 drives the moving tooth plate 710 to move toward the charging box 13, the moving tooth plate 710 will not drive the one-way shaft 81 to rotate when it contacts the first connecting gear 82. When the pressure spring 711 drives the moving tooth plate 710 to reset, the moving tooth plate 710 moves to make the first connecting gear 82 rotate, which will drive the one-way shaft 81 to rotate. The rotation of the one-way shaft 81 drives the second connecting gear 83 to rotate. The second connecting gear 83 drives the pinion 85 to rotate. When the pinion 85 drives the winding rod 84 to rotate, the winding rod 84 drives the rotating disk 86 to rotate. The stirring frame 87 provided on the rotating disk 86 will rotate around the rotating disk 86. The stirring frame 87 rotates in a circle, and during the rotation, the pulley on the stirring frame 87 will contact the inclined plate 810, and under the restriction of the inclined plate 810 and the elastic spring 89, the stirring frame 87 will be driven to move up and down reciprocatingly. At this time, the stirring frame 87 is located in the charging box 13, which will drive the filtered tobacco debris in the charging box 13 to rotate and stir, and the debris will be continuously lifted, thereby improving the efficiency of tobacco debris screening, and when the tobacco debris in the charging box 13 floats, the tobacco therein will be adsorbed by the secondary adsorber 811, so that the tobacco remaining in the tobacco debris will be collected, and the screening operation of the tobacco debris will be completed.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for separating and screening tobacco stems and recovering tobacco, characterized by: The invention comprises a horizontally arranged supporting platform (1), a lower hopper (11) being fixedly arranged on the top of the supporting platform (1), a sub-screening cavity (12) being provided on the supporting platform (1) below the lower hopper (11), a driving device (2) being arranged on the supporting platform (1), the driving device (2) being rotatably matched with the supporting platform (1), a vibrating device (3) being further arranged on the supporting platform (1), the vibrating device (3) being transmission matched with the driving device (2), the vibrating device (3) being located in the sub-screening cavity (12). 2), the carrying platform (1) is further provided with an unfolding device (4), the unfolding device (4) is slidably matched with the outer wall of the carrying platform (1), the unfolding device (4) is arranged toward the sub-screening cavity (12), and the unfolding device (4) is located above the vibration device (3), the top of the carrying platform (1) is located above the sub-screening cavity (12), and a sub-screening device (5) is arranged, and a loading box (13) is also fixedly arranged on the carrying platform (1), and a secondary sub-screening device (8) is arranged in the loading box (13); The driving device (2) comprises a driving motor (21) fixedly arranged on the outer wall of the bearing platform (1); the main shaft of the driving motor (21) is connected to a driving disk (22) in a transmission manner; a rotating rod (23) is rotatably arranged on the outer wall of the bearing platform (1); a transmission disk (24) is fixedly connected to the rotating rod (23); a driving belt (25) is sleeved between the driving disk (22) and the transmission disk (24); a connecting rod (26) is eccentrically arranged on the end surface of the transmission disk (24); a moving block (27) is slidably arranged on the outer wall of the bearing platform (1); the moving block (27) is hingedly matched with an end of the connecting rod (26) away from the transmission disk (24); The vibration device (3) comprises rotating disks (31) arranged on the inner wall of the support platform (1) relative to each other, a fixed shaft (32) being fixedly connected between the two rotating disks (31), the fixed shaft (32) being eccentrically arranged between the two rotating disks (31), one of the rotating disks (31) being fixedly connected to the rotating rod (23), a vibrating screen plate (33) being fixedly connected to the fixed shaft (32), the vibrating screen plate (33) being located in the sub-screening cavity (12), and the vibrating screen plate (33) being located below the lower hopper (11), the vibrating screen plate (33) The conveying end is located in the charging box (13); a bearing frame (34) is fixedly connected to the bearing platform (1) below the vibrating screen plate (33); a support frame (35) is hingedly provided on the bearing frame (34); the support frame (35) is hingedly matched with the bottom of the vibrating screen plate (33); a telescopic frame (36) is also hingedly provided on the bottom of the vibrating screen plate (33); an end of the telescopic frame (36) away from the vibrating screen plate (33) is hingedly matched with the bearing frame (34); and a connecting spring (37) is also connected to the telescopic frame (36); The unfolding device (4) comprises a moving frame (41) fixedly arranged on the outer wall of the moving block (27), the moving frame (41) slidably cooperates with the outer wall of the bearing platform (1), a support plate (42) is also fixedly arranged on the outer wall of the bearing platform (1), the moving frame (41) slidably cooperates with the support plate (42), rotating rods (43) are arranged on the support plate (42) on both sides of the moving frame (41) for relative rotation, rotating gears (44) are fixedly arranged on the rotating rods (43), teeth (45) are arranged on both sides of the moving frame (41), the teeth (45) mesh with two rotating gears (44), unfolding plates (46) are relatively slidably arranged on the side walls of the support plate (42), and hinged frames (47) are hingedly arranged on the two unfolding plates (46), the hinged frames (47) are hingedly cooperated with the rotating rods (43) and the unfolding plates (46), and the unfolding plates (46) are located above the vibration screen plate (33).

2. The device for separating stem shreds and screening and recovering tobacco according to claim 1, characterized in that: The screening device (5) comprises an exhaust fan (51) fixedly arranged on the top of the supporting platform (1); a rotating motor (52) is fixedly connected to the outer wall of the supporting platform (1); the main shaft of the rotating motor (52) is connected to the shaft of the exhaust fan (51); the exhaust end of the exhaust fan (51) is arranged toward the inside of the screening chamber (12); a material storage box (53) is also fixedly arranged on the top of the supporting platform (1); and the air outlet end of the exhaust fan (51) is connected to the material storage box (53).

3. The device for separating stem shreds and screening and recovering tobacco shreds according to claim 1, characterized in that: A transmission device (6) is also provided on the top of the bearing platform (1), and the transmission device (6) is located between the driving device (2) and the secondary screening device (8). The transmission device (6) comprises a positioning frame (61) fixedly arranged on the moving block (27), a pushing frame (62) is hingedly arranged on the positioning frame (61), and a tension spring (63) is arranged between the pushing frame (62) and the positioning frame (61). A sliding plate (64) is slidably arranged on the top of the bearing platform (1), and slots (65) are provided on the sliding plate (64) at equal intervals. The pushing frame (62) extends toward the slots (65). An inclined resistance plate (66) is fixedly arranged on the side wall of the bearing platform (1) below the sliding plate (64), and the pushing frame (62) contacts the inclined surface of the resistance plate (66). A limiting member (7) is also provided on the sliding plate (64).

4. The device for separating stem shreds and screening and recovering tobacco shreds according to claim 3, characterized in that: The limiting member (7) comprises a limiting block (71) rotatably arranged on the sliding plate (64), a torsion spring (72) is arranged between the limiting block (71) and the sliding plate (64), a limiting frame (73) is fixedly arranged on the top of the bearing platform (1), a limiting slot (74) is provided on the limiting frame (73), both ends of the limiting slot (74) are vertical, and the limiting slot (74) is provided with clamping slots (75) at equal intervals, and both ends of the vertical limiting slot (74) are inclined, and a clamping rod (76) is fixedly connected to the limiting block (71), so that the limiting block (71) is fixedly connected to the sliding plate (64), and the limiting frame (73) is provided with a limiting slot (74), and the limiting slot (74) is provided with a clamping slot (75) at equal intervals. The clamping rod (76) is located in the limiting groove (74); the limiting block (71) is provided with a limiting opening (77) and a positioning opening (78); the sliding plate (64) is hingedly provided with a locking block (79); the locking block (79) contacts the limiting opening (77) and the positioning opening (78) on the limiting block (71); the bottom of the sliding plate (64) is also fixedly connected with a movable tooth plate (710); the movable tooth plate (710) is slidably matched with the outer wall of the bearing platform (1); and a pressure spring (711) is connected between the movable tooth plate (710) and the bearing platform (1).

5. The device for separating stem shreds and screening and recovering tobacco shreds according to claim 4, characterized in that: The secondary screening device (8) comprises a one-way shaft (81) rotatably arranged on the top of the supporting platform (1), a first connecting gear (82) and a second connecting gear (83) being fixedly connected to the one-way shaft (81), the first connecting gear (82) being meshed with the movable tooth plate (710), a winding rod (84) being rotatably arranged on the supporting platform (1), a pinion gear (85) being fixedly connected to the winding rod (84), the second connecting gear (83) being meshed with the pinion gear (85), a rotating disk (86) being fixedly connected to the winding rod (84), a stirring frame (86) being relatively slidably arranged on the rotating disk (86), 7), the stirring frame (87) extends toward the inside of the charging box (13), and the two stirring frames (87) are each provided with a connecting rod (88) that slidably cooperates with the rotating disk (86), and an elastic spring (89) is sleeved on the connecting rod (88), and the two ends of the elastic spring (89) are respectively connected to the top of the rotating disk (86) and the stirring frame (87), and the support platform (1) is also fixedly provided with an inclined inclined plate (810), and the top of the stirring frame (87) is provided with a pulley, and the pulley is in contact with the surface of the inclined plate (810), and the outer wall of the charging box (13) is also provided with a secondary adsorber (811).

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