A tobacco seed threshing device

Abstract

The utility model discloses a tobacco seed threshing device relates to threshing equipment technical field, including frame, the material conveying pipe is installed on the frame, and the one end top wall detachable connection of material conveying pipe has feeding hopper, and the bottom wall of other end of material conveying pipe has the discharge pipe, and the lateral wall of material conveying pipe and the side of discharge pipe close is set up and has the discharge port, the rotatable connection of material conveying pipe has the rotary shaft, and the rotary shaft is provided with screw conveyor section and air -blast section in proper order, and air -blast section corresponds with the discharge port, and the rubbing band rotatable connection is in the frame, and is located the below of material conveying pipe, and the rubbing band includes the first annular belt and second annular belt that are arranged in parallel up and down and move towards each other, and has the rubbing gap between the first annular belt and second annular belt, and the one end of rubbing gap corresponds with the export end of discharge pipe and communicates, and the first screen is installed on the frame, and the material is advanced through screw conveyor section, and air -blast section cooperates with the discharge port, and separates light impurity before threshing, and the rubbing gap is formed to rubbing band, and the traditional machinery is replaced by flexible extrusion.

Description

Technical Field

[0001] This utility model relates to the field of threshing equipment technology, and more specifically to a tobacco seed threshing device. Background Technology

[0002] Obtaining tobacco seeds is a crucial step in tobacco cultivation, typically requiring the threshing of mature pods. Tobacco seeds are characterized by their small size, thin seed coat, fragility, and high economic value, placing specific demands on the performance of threshing equipment. Currently, the commonly used methods for threshing tobacco seeds are manual threshing and mechanical threshing. Manual threshing is extremely inefficient and labor-intensive, making it unsuitable for large-scale production. Mechanical threshing equipment improves efficiency to some extent, but it generally suffers from the following technical problems:

[0003] Existing mechanical threshing devices mostly employ principles similar to grain threshing, such as impact from spiked rollers or millstone compaction. These methods generate excessive impact and compression forces, which can easily cause mechanical damage to the fragile tobacco seeds. After threshing, the mixture contains seeds, broken pods, calyx fragments, down, and other light impurities, as well as incompletely detached pod fragments. The single screening process in existing equipment is insufficient to effectively remove debris and light down similar in size to the seeds, resulting in low purity of the cleaned seeds.

[0004] Therefore, how to provide a threshing device that can improve threshing efficiency while reducing seed damage is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a tobacco seed threshing device, which aims to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tobacco seed threshing device, comprising:

[0008] frame;

[0009] A feeding pipe is mounted on the frame. A feeding hopper is detachably connected to the top wall of one end of the feeding pipe, and a discharge pipe is provided on the bottom wall of the other end of the feeding pipe. A discharge outlet is provided on the side wall of the feeding pipe, near the discharge pipe. A rotating shaft is rotatably connected inside the feeding pipe. A spiral conveying section and a pneumatic conveying section are sequentially arranged on the rotating shaft, and the pneumatic conveying section corresponds to the discharge outlet.

[0010] A kneading belt is rotatably connected to the frame and located below the feed pipe. The kneading belt includes a first annular belt and a second annular belt arranged parallel to each other and moving in opposite directions. A kneading gap is provided between the first annular belt and the second annular belt, and one end of the kneading gap is connected to the outlet end of the discharge pipe.

[0011] The first screen is mounted on the frame and located below the second annular belt.

[0012] Through the above technical solution, the present invention provides a tobacco seed threshing device that uses a spiral conveying section in the conveying pipe to propel the material, and a pneumatic conveying section that works in conjunction with the discharge outlet to use wind power to separate light impurities (such as fruit shells and fuzz) in the pods before threshing, reducing the load on subsequent processes. The rubbing belt uses first and second annular belts that move parallel to each other and in opposite directions to form a rubbing gap, replacing traditional mechanical impact with flexible extrusion, significantly reducing the mechanical damage rate of tobacco seeds (which are easily broken). The discharge pipe outlet is directly connected to the rubbing gap, achieving seamless connection between conveying and threshing, avoiding material accumulation and blockage. The first screen is located below the rubbing belt, immediately separating seeds from large particles of impurities, improving the seed screening purity.

[0013] Preferably, in the above-mentioned tobacco seed threshing device, the surfaces of both the first annular belt and the second annular belt are fixed with multiple flexible protrusions. The flexible protrusions enhance the rubbing effect and buffer local pressure, preventing the seeds from breaking due to hard contact (excessive squeezing or friction) during the rubbing process, thereby increasing the yield of intact seeds.

[0014] Preferably, in the above-described tobacco seed threshing device, the width of the first screen is greater than the width of the second annular belt. The wider first screen ensures that all threshed material is caught by the screen, preventing seeds from leaking out from the edges and causing loss.

[0015] Preferably, in the above-mentioned tobacco seed threshing device, a first longitudinal beam and a second longitudinal beam are fixed on the frame in a symmetrical arrangement; a first drive motor and a second drive motor are sequentially installed on the first longitudinal beam from top to bottom; the first drive motor provides rotational power to the first annular belt; and the second drive motor provides rotational power to the second annular belt. The dual motors are independently driven: the first and second drive motors are located on the first longitudinal beam and independently control the upper and lower annular belts, realizing bidirectional shearing motion within the rubbing gap, thus improving threshing efficiency; the symmetrical arrangement of the longitudinal beams optimizes the utilization of frame space and structural stability.

[0016] Preferably, in the above-mentioned tobacco seed threshing device, the first annular belt is tensioned by a first driving roller and a first driven roller; the shaft of the first driving roller is fixedly connected to the power output shaft of the first drive motor, and the shaft of the first driven roller is rotatably connected to the second longitudinal beam; the second annular belt is tensioned by a second driving roller and a second driven roller, the shaft of the second driving roller is fixedly connected to the power output shaft of the second drive motor, and the shaft of the second driven roller is rotatably connected to the second longitudinal beam. The tensioning structure of the driving roller and the driven roller ensures smooth operation of the annular belt and avoids slippage; the driven roller is installed on the second longitudinal beam to form a cross-beam support, enhancing the belt's load-bearing capacity and lifespan.

[0017] Preferably, the tobacco seed threshing device described above further includes an adjusting component for adjusting the rubbing gap. The adjusting component includes longitudinal grooves respectively formed on the first and second longitudinal beams. A slider is slidably connected within the longitudinal grooves, allowing the first annular belt to move vertically up and down along the first and second longitudinal beams, thereby adjusting the rubbing gap. The slider is secured by fasteners. This structure enables dynamic adjustment of the rubbing gap: the sliding cooperation between the longitudinal grooves and the slider flexibly adjusts the gap to adapt to pods of different humidity levels / varieties, solving the problem of insufficient threshing rate or seed damage caused by a fixed gap. The locking / tightening of the fasteners ensures the stability of the working gap and prevents vibration-induced deviation.

[0018] Preferably, in the above-mentioned tobacco seed threshing device, a discharge pipe is detachably connected to the discharge port. This allows for the directional collection and centralized processing of light impurities, and the detachable design facilitates cleaning of blockages.

[0019] Preferably, in the above-mentioned tobacco seed threshing device, a secondary screening component is installed on the frame, below the first screen. The mesh size of the secondary screening component is smaller than that of the first screen. The smaller mesh size of the secondary screening component allows for fine grading of the seeds after initial screening, separating small particulate impurities (such as broken seeds and gravel), significantly improving seed purity and consistency.

[0020] Preferably, in the above-mentioned tobacco seed threshing device, a centrifugal fan is installed on the frame, and the air outlet of the centrifugal fan faces the first screen. The centrifugal fan blows air towards the first screen, and the airflow penetrates the screen pores, blowing away residual light impurities (such as lint and debris), realizing the coordinated cleaning of "screening + air separation" and reducing the need for manual secondary processing.

[0021] Preferably, in the above-mentioned tobacco seed threshing device, a third drive motor is installed on the frame, and the power output shaft of the third drive motor is fixedly connected to the rotating shaft. Precise adjustment of the screw conveyor speed and the air conveying section rotation speed optimizes the material residence time and air separation intensity, adapting to the processing needs of pods with different moisture contents.

[0022] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a tobacco seed threshing device, which has the following beneficial effects:

[0023] 1. This utility model abandons the traditional impact and crushing threshing method and adopts a flexible rubbing belt (first annular belt and second annular belt) arranged in parallel and moving in opposite directions and the rubbing gap formed therein; the pods are subjected to continuous and gentle squeezing and rubbing force in the gap, combined with the possible flexible protrusions on the surface of the belt, which effectively cracks the pods to release the seeds while minimizing mechanical damage to the tobacco seeds (which are easily damaged), thereby ensuring the high integrity and high vigor of the seeds and laying a high-quality foundation for subsequent planting.

[0024] 2. This utility model achieves multi-stage impurity separation. First, a spiral conveying section and a pneumatic conveying section are set in the conveying pipe. During the material conveying process, the wind power is used to remove light impurities (fruit shells, fuzz) through the outlet in advance, reducing the subsequent load. Second, the mixture after kneading and threshing falls directly to the first screen with a matching width below for preliminary screening to separate large particles of impurities. Furthermore, the optional secondary screening component (smaller aperture) and the centrifugal fan (blowing air towards the screen) work together to perform fine screening and air separation on the seeds after preliminary screening, thoroughly removing small particles of impurities and residual light impurities, and finally obtaining high-purity clean seeds. The entire process (conveyance-pre-cleaning-kneading-screening-air separation) is smoothly connected, highly automated, and significantly improves processing efficiency and seed purity.

[0025] 3. The rubbing gap of this utility model can be adjusted by adjusting the components, so that the equipment can easily adapt to tobacco pods of different varieties, different humidity or maturity, and optimize the threshing effect; the independent drive motor allows for precise adjustment of the working parameters of each part (such as conveying speed and rubbing belt speed), so as to achieve the best matching of different material characteristics and precise control of the overall threshing process. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 The attached figure is a front view of the tobacco seed threshing device provided by this utility model;

[0028] Figure 2 The attached figure is an isometric view of the tobacco seed threshing device provided by this utility model;

[0029] Figure 3 The attached image is... Figure 1 The attached sectional view;

[0030] Figure 4 The attached figure is a structural schematic diagram of the rotating shaft provided by this utility model;

[0031] Figure 5 The attached figure is a schematic diagram of the kneading belt provided by this utility model;

[0032] Figure 6 The attached figure is a structural schematic diagram of the kneading belt provided by this utility model from another angle;

[0033] Figure 7 The attached figure is a structural schematic diagram of the first screen and the secondary screening assembly provided by this utility model;

[0034] Figure 8 The attached figure is a structural schematic diagram of the tobacco seed threshing device provided by this utility model from another angle;

[0035] Figure 9 The attached image is... Figure 8 Enlarged view of section A in the attached figure.

[0036] in:

[0037] 1-Frame; 11-First longitudinal beam; 111-First drive motor; 112-Second drive motor; 12-Second longitudinal beam; 13-Third drive motor; 14-Mounting base; 15-Support plate; 2-Feeding pipe; 21-Feed hopper; 22-Discharge pipe; 23-Discharge outlet; 3-Rotating shaft; 31-Screw conveyor section; 32-Pneumatic conveyor section; 4-Kneading belt; 41-First annular belt; 411-First driving roller; 412-First driven roller; 42-Second annular belt; 421-First... 422-Second driven roller; 43-Kneading gap; 44-Flexible protrusion; 5-First screen; 6-Adjusting component; 61-Longitudinal chute; 62-Slider; 63-Fastener; 7-Secondary screening component; 71-U-shaped trough; 711-Connecting column; 712-Connecting rod; 72-Second screen; 73-Discharge chute; 8-Centrifugal fan; 9-Drive mechanism; 91-Fourth drive motor; 92-Pulley assembly; 93-Drive shaft; 94-Disc; 95-Connecting rod. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] See appendix Figure 1 To be continued Figure 9 This utility model discloses a tobacco seed threshing device, comprising:

[0040] Rack 1;

[0041] The conveying pipe 2 is mounted on the frame 1. One end of the conveying pipe 2 has a feed hopper 21 detachably connected to its top wall, and the other end of the conveying pipe 2 has a discharge pipe 22 on its bottom wall. A discharge outlet 23 is provided on the side wall of the conveying pipe 2, near the discharge pipe 22. A rotating shaft 3 is rotatably connected inside the conveying pipe 2. A screw conveying section 31 and a pneumatic conveying section 32 are arranged sequentially on the rotating shaft 3. The pneumatic conveying section 32 corresponds to the discharge outlet 23.

[0042] The kneading belt 4 is rotatably connected to the frame 1 and located below the conveying pipe 2. The kneading belt 4 includes a first annular belt 41 and a second annular belt 42 arranged in parallel and moving towards each other. There is a kneading gap 43 between the first annular belt 41 and the second annular belt 42. One end of the kneading gap 43 is connected to the outlet end of the discharge pipe 22.

[0043] First screen 5; First screen 5 is installed on frame 1 and located below second annular belt 42.

[0044] To further optimize the above technical solution, the discharge pipe 22 is arranged at an angle; discharge valves are installed at both the outlet end of the discharge pipe 22 and the outlet end of the feed hopper 21.

[0045] To further optimize the above technical solution, multiple flexible protrusions 44 are fixed on the surfaces of the first annular belt 41 and the second annular belt 42.

[0046] To further optimize the above technical solution, multiple flexible protrusions 44 are arranged in a matrix on the first annular belt 41 and the second annular belt 42.

[0047] To further optimize the above technical solution, the flexible protrusion 44 can be conical, rectangular or other shapes, or it can be a long strip-shaped flexible protrusion.

[0048] To further optimize the above technical solution, the width of the first screen 5 is greater than the width of the second annular belt 42.

[0049] To further optimize the above technical solution, a first longitudinal beam 11 and a second longitudinal beam 12 are fixed on the frame 1 in pairs symmetrical arrangement; a first drive motor 111 and a second drive motor 112 are installed on one of the first longitudinal beams 11 from top to bottom; the first drive motor 111 provides rotational power to the first annular belt 41; and the second drive motor 112 provides rotational power to the second annular belt 42.

[0050] To further optimize the above technical solution, the first annular belt 41 is tensioned by the first driving roller 411 and the first driven roller 412; the rotating shaft of the first driving roller 411 is fixedly connected to the power output shaft of the first drive motor 111, and the rotating shaft of the first driven roller 412 is rotatably connected to the second longitudinal beam 12; the second annular belt 42 is tensioned by the second driving roller 421 and the second driven roller 422, the rotating shaft of the second driving roller 421 is fixedly connected to the power output shaft of the second drive motor 112, and the rotating shaft of the second driven roller 422 is rotatably connected to the second longitudinal beam 12.

[0051] To further optimize the above technical solution, an adjustment component 6 for adjusting the kneading gap 43 is also included. The adjustment component 6 includes longitudinal grooves 61 respectively opened on the first longitudinal beam 11 and the second longitudinal beam 12. A slider 62 is slidably connected in the longitudinal grooves 61, so that the first annular belt 41 can move up and down in the vertical direction along the first longitudinal beam 11 and the second longitudinal beam 12 to realize the adjustment of the kneading gap 43. The slider 62 is fastened by fasteners 63.

[0052] To further optimize the above technical solution, the length of the second annular belt 42 is greater than the length of the first annular belt 41, so that the outlet end of the discharge pipe 22 can directly correspond to the side of the second annular belt 42 near the outlet end of the discharge pipe 22, such as... Figure 6 As shown; at the same time, two symmetrically arranged mounting seats 14 are also fixed on the frame 1. When the length of the second annular belt 42 is greater than that of the first annular belt 41, the shaft of the second driven roller 422 of the second annular belt 42 is rotatably connected between the two mounting seats 14.

[0053] To further optimize the above technical solution, bearings are installed between the rotating shafts of the first driving roller 411, the first driven roller 412, the second driving roller 421, and the second driven roller 422 and the first longitudinal beam 11, the second longitudinal beam 12, or the mounting base 14.

[0054] To further optimize the above technical solution, discharge pipes are detachably connected to the discharge outlets at points 23.

[0055] To further optimize the above technical solution, a secondary screening component 7 is installed on the frame 1 and below the first screen 5. The screen aperture of the secondary screening component 7 is smaller than that of the first screen 5.

[0056] To further optimize the above technical solution, the secondary screening component 7 includes a U-shaped groove 71 that is inclinedly installed inside the frame 1, and multiple layers of second screens 72 that are fixed inside the U-shaped groove 71. The multiple layers of second screens 72 are spaced apart and are driven to reciprocate by the drive mechanism 9 to achieve secondary screening.

[0057] To further optimize the above technical solutions, such as Figure 5 As shown, connecting posts 711 are connected to the two side plates of the U-shaped groove 71; connecting rods 712 are hinged between the connecting posts 711 and the frame 1.

[0058] To further optimize the above technical solution, each end of the second screen 72 is connected to a downwardly inclined discharge chute 73.

[0059] To further optimize the above technical solution, in this embodiment, the second screen 72 has two layers. The aperture of the upper second screen 72 is smaller than that of the first screen, but larger than that of the lower second screen 72. Each layer of the second screen 72 is connected to a discharge trough 73 with an impurity collection box. The outlet ends of the upper second screen, the lower second screen, and the U-shaped trough 71 are oriented as follows: Figure 7 As shown; and each discharge trough 73 has a seed collection box below it.

[0060] To further optimize the above technical solution, the mesh openings of the first and second screens can be circular, conical, or other shapes, depending on actual needs.

[0061] To further optimize the above technical solution, a centrifugal fan 8 is installed on the frame 1, and the air outlet of the centrifugal fan 8 faces the first screen 5.

[0062] To further optimize the above technical solution, the air outlet of the centrifugal fan 8 can be directed toward the first screen 5 and the secondary screening component 7.

[0063] To further optimize the above technical solution, a third drive motor 13 is installed on the frame 1, and the power output shaft of the third drive motor 13 is fixedly connected to the rotating shaft 3.

[0064] To further optimize the above technical solution, the drive mechanism 9 includes a fourth drive motor 91, a pulley assembly 92, a transmission shaft 93, a disc 94, and a connecting rod 95. The fourth drive motor 91 is mounted on the base plate below the frame 1. The driving pulley 921 of the pulley assembly 92 is fixedly connected to the power output shaft of the fourth drive motor 91. The transmission shaft 93 is fixed at the center of the driven pulley 922 of the pulley assembly 92. The disc 94 is fixed on the transmission shaft 93. A connecting pin is eccentrically fixed on the end face of the disc 94. One end of the connecting rod 95 is hinged to the connecting pin, and the other end is hinged to the bottom wall of the U-shaped groove 71. Figure 7As shown.

[0065] To further optimize the above technical solutions, such as Figure 9 As shown, two support plates 15 are fixed on the frame 1, and the drive shaft 93 is rotatably connected to the support plates 15 to provide support.

[0066] To further optimize the above technical solution, a controller is also included. The controller is electrically connected to the control terminals of the discharge valve, the first drive motor 111, the second drive motor 112, the third drive motor 13, and the centrifugal fan 8. The controller can control the operating parameters of each component as needed, such as the running speed of the motor, the wind speed and air volume adjustment of the centrifugal fan, etc.

[0067] To further optimize the above technical solution, the start-up time of the centrifugal fan 8 can be controlled by the controller as needed. When the outlet of the centrifugal fan 8 faces the first screen 5, the centrifugal fan 8 can be turned on when the tobacco seeds are rubbed by the rubbing belt 4 and fall onto the first screen 5. When the outlet of the centrifugal fan 8 faces the first screen 5 and the secondary screening component 7, the centrifugal fan 8 can be turned on after the secondary screening component 7 has completely separated the tobacco seeds, or it can be turned on during the separation process, depending on the actual needs.

[0068] The embodiments of this utility model are as follows:

[0069] 1. Material conveying and pretreatment

[0070] Material conveying process: Tobacco pods are fed into the feed hopper 21 and enter the conveying pipe 2; the rotating shaft 3 inside the conveying pipe 2 is equipped with a spiral conveying section 31 and a pneumatic conveying section 32; the spiral conveying section 31 pushes the pods forward, while the pneumatic conveying section 32 generates air through the discharge port 23 to pre-separate and discharge light impurities (such as fruit shells and fuzz) in the pods, reducing the load on subsequent processes.

[0071] Pre-treatment effect: By combining screw conveyor and pneumatic conveyor, light impurities are initially removed, ensuring that the material entering the kneading belt is purer and reducing the burden of subsequent screening.

[0072] 2. Kneading and threshing

[0073] The rubbing process: The pre-treated pods enter the rubbing gap 43 of the rubbing belt 4 through the discharge pipe 22; the rubbing belt consists of a first annular belt 41 and a second annular belt 42 arranged in parallel, and the two move towards each other; the pods are subjected to continuous and gentle squeezing and rubbing forces in the rubbing gap 43, and combined with the flexible protrusions 44 on the surface of the belt, the pods are effectively cracked to release the seeds, while minimizing mechanical damage to the tobacco seeds.

[0074] The function of the flexible protrusions: The flexible protrusions 44 enhance the kneading effect and buffer local pressure, preventing the seeds from breaking due to hard contact during the kneading process and improving the yield of intact seeds.

[0075] 3. Screening and air separation

[0076] Preliminary screening: After rubbing and threshing, the mixed seeds and large particles fall directly onto the first screen 5 below; the width of the first screen 5 is greater than the width of the second annular belt 42, ensuring that all the threshed material can be caught by the screen and avoiding loss of seeds from the edges; the first screen 5 separates the seeds from the large particles, and the seeds after preliminary screening enter the secondary screening component 7.

[0077] Secondary screening: The secondary screening component 7 includes a U-shaped groove 71 installed at an incline on the inner side of the frame 1 and a multi-layer second screen 72 fixed on the inner side of the U-shaped groove 71; the aperture of the second screen 72 is smaller than that of the first screen 5, which performs fine grading on the seeds after preliminary screening, separates small particle impurities such as broken seeds and gravel, and significantly improves the purity and consistency of seeds.

[0078] Air separation function: The air outlet of the centrifugal fan 8 is directed towards the first screen 5. The airflow penetrates the screen mesh and blows away residual light impurities (such as lint and debris), realizing the coordinated cleaning of "screening + air separation" and reducing the need for manual secondary processing.

[0079] 4. Power and Adjustment

[0080] Power drive: The first drive motor 111 and the second drive motor 112 drive the first annular belt 41 and the second annular belt 42 respectively, ensuring that the opposite movement of the two annular belts is more stable and precise; the power output shaft of the third drive motor 13 is fixedly connected to the rotating shaft 3, providing power to the spiral conveying section 31 and the pneumatic conveying section 32 in the material conveying pipe.

[0081] Gap adjustment: The adjustment component 6 includes a longitudinal groove 61 formed on the first longitudinal beam 11 and the second longitudinal beam 12. The slider 62 slides in the longitudinal groove 61, so that the first annular belt 41 can move up and down in the vertical direction to adjust the kneading gap 43. The slider 62 is fastened by the fastener 63 to ensure that the adjusted gap remains stable.

[0082] 5. Discharge and Collection

[0083] Discharge of light impurities: A discharge pipe is detachably connected to outlet 23 for the directional collection and centralized treatment of light impurities; the detachable design facilitates cleaning of blockages.

[0084] Seed collection: After multi-stage screening and air separation, the high-purity clean seeds enter the seed collection box through the discharge trough 73 for easy subsequent collection and processing.

[0085] Based on the above working principle, the tobacco seed threshing device of this invention achieves efficient threshing, low damage, multi-stage impurity separation, and automated operation, significantly improving the threshing efficiency and purity of tobacco seeds, and providing high-quality seeds for tobacco cultivation.

[0086] It should be noted that this utility model is not limited to the threshing of tobacco seeds, but is also applicable to the threshing of seeds of other crops, etc., by adjusting the rubbing gap as needed.

[0087] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0088] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tobacco seed threshing device, characterized in that, include: Rack (1); A feeding pipe (2) is installed on the frame (1). A feeding hopper (21) is detachably connected to the top wall of one end of the feeding pipe (2). A discharge pipe (22) is provided on the bottom wall of the other end of the feeding pipe (2). A discharge port (23) is provided on the side wall of the feeding pipe (2) and on the side close to the discharge pipe (22). A rotating shaft (3) is rotatably connected inside the feeding pipe (2). A spiral conveying section (31) and a pneumatic conveying section (32) are arranged sequentially on the rotating shaft (3). The pneumatic conveying section (32) corresponds to the discharge port (23). A kneading belt (4) is rotatably connected to the frame (1) and located below the conveying pipe (2). The kneading belt (4) includes a first annular belt (41) and a second annular belt (42) arranged in parallel and moving towards each other. There is a kneading gap (43) between the first annular belt (41) and the second annular belt (42). One end of the kneading gap (43) is connected to the outlet end of the discharge pipe (22). First screen (5); The first screen (5) is mounted on the frame (1) and located below the second annular belt (42).

2. The tobacco seed threshing device according to claim 1, characterized in that, The surfaces of the first annular belt (41) and the second annular belt (42) are each fixed with a plurality of flexible protrusions (44).

3. The tobacco seed threshing device according to claim 1, characterized in that, The width of the first screen (5) is greater than the width of the second annular belt (42).

4. The tobacco seed threshing device according to claim 1, characterized in that, The frame (1) is fixed with a first longitudinal beam (11) and a second longitudinal beam (12) arranged symmetrically in pairs; a first drive motor (111) and a second drive motor (112) are installed on one of the first longitudinal beams (11) from top to bottom; the first drive motor (111) provides rotational power to the first annular belt (41); the second drive motor (112) provides rotational power to the second annular belt (42).

5. A tobacco seed threshing device according to claim 4, characterized in that, The first annular belt (41) is tensioned by the first active roller (411) and the first driven roller (412); the shaft of the first active roller (411) is fixedly connected to the power output shaft of the first drive motor (111), and the shaft of the first driven roller (412) is rotatably connected to the second longitudinal beam (12); the second annular belt (42) is tensioned by the second active roller (421) and the second driven roller (422), the shaft of the second active roller (421) is fixedly connected to the power output shaft of the second drive motor (112), and the shaft of the second driven roller (422) is rotatably connected to the second longitudinal beam (12).

6. A tobacco seed threshing device according to claim 5, characterized in that, It also includes an adjustment component (6) for adjusting the kneading gap (43). The adjustment component (6) includes longitudinal grooves (61) respectively opened on the first longitudinal beam (11) and the second longitudinal beam (12). A slider (62) is slidably connected in the longitudinal groove (61) so that the first annular belt (41) can move up and down in the vertical direction along the first longitudinal beam (11) and the second longitudinal beam (12) to realize the gap adjustment of the kneading gap (43). The slider (62) is fastened by a fastener (63).

7. A tobacco seed threshing device according to claim 1, characterized in that, A discharge pipe is detachably connected to the discharge port (23).

8. A tobacco seed threshing device according to claim 1, characterized in that, A secondary screening component (7) is installed on the frame (1) and below the first screen (5). The screen aperture of the secondary screening component (7) is smaller than that of the first screen (5).

9. A tobacco seed threshing device according to claim 8, characterized in that, A centrifugal fan (8) is installed on the frame (1), and the outlet of the centrifugal fan (8) faces the first screen (5).

10. A tobacco seed threshing device according to claim 1, characterized in that, A third drive motor (13) is mounted on the frame (1), and the power output shaft of the third drive motor (13) is fixedly connected to the rotating shaft (3).

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