Multi-stage re-threshing cleaning device and pepper harvester

Abstract

The utility model relates to the field of agricultural machinery, in particular to a multistage re-threshing cleaning device and a pepper harvester, which comprise an upper cleaning device, a lower cleaning device, a first-stage pre-threshing device, a second-stage pre-threshing device, a third-stage pre-threshing device, a fourth-stage pre-threshing device, a fourth-stage pre-threshing device, a fifth-stage pre-threshing device, a fifth-stage pre-threshing device, a fifth-stage pre-threshing device and a sixth-stage pre-threshing device, the pre-separation device is used for picking up materials on the upper cleaning device and pre-separating the materials; and the second-stage re-threshing device is arranged behind the first-stage pre-threshing device and located in the middle of the upper cleaning device, and the second-stage re-threshing device is used for carrying out secondary separation on the materials on the upper cleaning device. The multi-stage separation device can be applied to the pepper harvester, and can perform multi-stage separation on pepper picking mixed materials, so that the working efficiency is improved, the threshing rate is improved, the loss is reduced, and the impurity rate is reduced.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, specifically to a multi-stage de-drying and cleaning device and a chili harvester. Background Technology

[0002] Most chili harvesters are equipped with cleaning devices, which vary in structure but have limited cleaning capacity and high impurity content. Roller-type upper and lower cleaning systems combined with cleaning fans are currently the most common cleaning and impurity removal methods. However, there is limited research on secondary stripping devices. Incomplete secondary stripping not only causes losses but also affects the impurity content. The material mixture after chili harvesting often carries a significant amount of impurities such as chili stalks, leaves, soil, and weeds, with some stalks also carrying unseparated chilies. If these chilies are not effectively separated through secondary stripping, they will either be discharged by the upper cleaning device, causing direct losses, or the stalks and other impurities will be collected together, increasing the burden of manual sorting and causing significant inconvenience for later processing. Because chilies at the optimal harvest time have high moisture content, chilies carrying a large amount of impurities will mold or even rot during transportation, causing indirect losses. Therefore, relying solely on the cleaning device without a secondary threshing device is clearly insufficient. Currently, chili harvesters equipped with secondary threshing devices can significantly improve the chili threshing rate. However, most existing secondary threshing devices are single-stage, resulting in low working efficiency and a low threshing rate. They still cannot effectively avoid the aforementioned problems, thereby causing unnecessary economic losses. Utility Model Content

[0003] The purpose of this invention is to provide a multi-stage de-cleaning device that can be applied to a chili harvester. It can separate the chili harvesting mixture (chili peppers, stalks, leaves, and soil harvested from the harvesting platform) through multiple stages, thereby improving work efficiency, increasing the de-cleaning rate, reducing losses, and lowering the impurity content.

[0004] Another objective of this invention is to provide a chili harvester that can separate chili harvesting mixture (chili peppers, stalks, leaves, and soil harvested from the harvesting platform) through multiple stages, thereby improving work efficiency, increasing the cleanliness rate, reducing losses, and lowering the impurity content.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A multi-stage decanting and cleaning device includes an upper cleaning device and a lower cleaning device, and further includes:

[0007] A primary pre-separation device is located above the front of the upper cleaning device and is used to pick up the material on the upper cleaning device and pre-separate it.

[0008] A secondary separation device is provided, which is located after the primary separation device and in the middle of the upper cleaning device. The secondary separation device is used to perform secondary separation on the material in the upper cleaning device.

[0009] Furthermore, the primary pre-disengagement device includes:

[0010] The first three-stage roller assembly includes a first roller, a second roller, and a third roller arranged in a triangle. The spike teeth on the first roller and the second roller are respectively staggered with the spike teeth on the third roller. The first roller is connected and driven to the second roller and the third roller through a first transmission assembly and a second transmission assembly, respectively.

[0011] Side plates are respectively provided on opposite sides of the first three-stage roller assembly, and the two ends of the first roller, the second roller and the third roller are respectively mounted on the side plates on both sides through bearing seats;

[0012] The first drive mechanism has its output end connected to the roller shaft of the first roller for transmission.

[0013] An adjustment mechanism is connected to the first third-stage roller assembly and is used to adjust the position and pitch angle of the first third-stage roller assembly.

[0014] Furthermore, the front and rear portions of the side plate are respectively provided with a front adjustment shaft and a rear adjustment shaft, and the adjustment mechanism is symmetrically arranged on the opposite sides of the first three-stage roller assembly;

[0015] The adjustment mechanism includes a support beam, an adjustment plate, a connecting plate, a guide seat, and a lead screw. The two ends of the front adjustment shaft are rotatably connected to the support beams on both sides through the adjustment plate. Multiple adjustment holes are opened on the adjustment plate and the support beams. The adjustment holes on the adjustment plate and the adjustment holes on the support beams are used to install hinge components. The two ends of the rear adjustment shaft are rotatably connected to the support beams on both sides. Multiple mounting holes for installing the rear adjustment shaft are opened on the support beams. The rear end of the support beam is used to hinge with the frame of the harvester.

[0016] The connecting plates are respectively provided on opposite sides of the guide seat. One end of the connecting plate is hinged to the guide seat, and the other end is fixedly connected to the front end of the support beam.

[0017] The guide seat has a threaded hole that matches the lead screw, the threaded portion of the lead screw is threadedly connected to the threaded hole of the guide seat, and the upper end of the lead screw is used to hinge with the frame of the harvester.

[0018] Furthermore, a fixed tooth plate assembly is provided at the rear of the first third-stage roller assembly, which can be used in conjunction with it. The fixed tooth plate assembly includes a fixed tooth fixing seat and fixed teeth, and multiple fixed teeth are provided on the fixed tooth fixing seat.

[0019] Furthermore, the secondary re-extraction device includes a second and third stage roller assembly, a re-extraction side plate, and a second drive mechanism;

[0020] The second and third stage roller assembly includes a fourth roller, a fifth roller, and a sixth roller arranged in a triangular pattern. The spike teeth on the fourth roller and the fifth roller are respectively staggered with the spike teeth on the sixth roller. The fourth roller is connected and driven by the fifth roller and the sixth roller respectively.

[0021] The second and third stage roller assemblies are respectively provided with the re-extraction side plates on their opposite sides, and the two ends of the fourth roller, the fifth roller and the sixth roller are respectively mounted on the re-extraction side plates on both sides through bearing seats;

[0022] The output end of the second drive mechanism is connected to the roller shaft of the fourth roller for transmission;

[0023] The upper cleaning device is provided with re-extraction crossbeams on opposite sides of the middle part, and the re-extraction side plates on both sides are connected and fixed to the re-extraction crossbeams on both sides.

[0024] Furthermore, the supercleaning device includes two symmetrically arranged supercleaning side plates, supercleaning rollers, sliding bearings, and a deflector spacer sleeve;

[0025] Multiple upper cleaning rollers are sequentially arranged between the two upper cleaning side plates, and the two ends of the upper cleaning rollers are respectively connected to the upper cleaning side plates on both sides through the sliding bearings;

[0026] The upper cleaning roller includes an upper cleaning roller shaft and a star-shaped upper cleaning selector wheel mounted on the upper cleaning roller shaft. The upper cleaning selector wheels of two adjacent upper cleaning rollers are staggered, and a selector wheel spacer is provided between two adjacent upper cleaning selector wheels on each upper cleaning roller.

[0027] Furthermore, the lower cleaning device includes a lower cleaning roller assembly and a lower cleaning fan disposed below the lower cleaning roller assembly, and the outlet of the lower cleaning fan is provided with a baffle.

[0028] Furthermore, a shaking screen device is provided after the secondary descrambling device to remove impurities from the descrambling material.

[0029] Furthermore, the shaking screen device includes a shaking screen plate, an eccentric connecting rod mechanism, and a third drive mechanism. The output end of the third drive mechanism is connected to the shaking screen plate for transmission through the eccentric connecting rod mechanism.

[0030] A chili harvester includes a frame and the aforementioned multi-stage threshing and cleaning device, which is mounted on the frame.

[0031] Compared with the prior art, the beneficial effects of this utility model are:

[0032] This invention designs a multi-stage re-exfoliation and cleaning device, which is divided into two stages: a primary pre-exfoliation device and a secondary re-exfoliation device. These are installed at the front upper part and the middle part of the upper cleaning device, respectively. In this way, the chili harvesting mixture (chili peppers, stalks, leaves, and soil harvested from the harvesting platform, etc.) is separated by the primary pre-exfoliation device. Some chili peppers that are still not cleaned are separated again by the secondary re-exfoliation device, which reduces the working pressure of the secondary re-exfoliation device, improves the cleaning rate, reduces the impurity content, and reduces economic losses. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the chili harvester of this utility model;

[0035] Figure 2 This is a schematic diagram of the structure of the primary pre-detachment device of this utility model;

[0036] Figure 3 This is a schematic diagram of the structure of the two-stage re-exfoliation device of this utility model;

[0037] Figure 4 This is a schematic diagram of the roller assembly structure of the upper cleaning device of this utility model;

[0038] Figure 5 This is a schematic diagram of the structure of the shaking screen device of this utility model;

[0039] Figure 6 This is a schematic diagram of the structure of the lower cleaning device of this utility model;

[0040] Figure 7 This is a schematic diagram of the structure of the supernatant selection wheel of this utility model;

[0041] Figure 8 This is a schematic diagram of the structure of the lower cleaning wheel of this utility model.

[0042] In the picture:

[0043] 1-First stage pre-disengagement device; 100-First and third stage roller assembly; 1001-First roller; 1002-Second roller; 1003-Third roller; 101-Connecting plate; 103-Adjusting plate; 104-Support beam; 105-Sprocket; 106-Roller shaft; 107-Bearing seat; 108-Cover plate; 109-Fixed tooth fixing seat; 110-Fixed tooth; 111-Roller tube; 112-Screw tooth; 113-Guide seat; 114-Screw rod; 115-Adjusting hole; 116-Mounting hole; 117-Fixed tooth plate assembly; 118-Rear adjusting shaft;

[0044] 2- Secondary re-extraction device; 200- Second and third stage roller assembly;

[0045] 3-Upper cleaning device; 301-Re-detachment crossbeam; 302-Re-detachment side plate;

[0046] 4-Lower cleaning device; 400-Upper cleaning roller; 401-Upper cleaning side plate; 402-Upper cleaning sprocket; 403-Upper cleaning roller shaft; 404-Upper cleaning dial wheel; 405-Sliding bearing; 406-Dial wheel spacer;

[0047] 5-Shaking screen device; 501-Front swing arm seat; 502-Hanging rod arm; 503-Hanging rod pin; 504-Shaking screen plate; 505-Screen box sealing plate; 506-Swing arm; 507-Second drive plate; 508-Drive shaft; 509-First drive plate; 510-Connecting rod; 511-Shaking screen sprocket;

[0048] 601-Mounting bracket; 603-Material baffle; 604-Lower cleaning wheel;

[0049] 7-Lower cleaning fan; 8-Lower elevator; 9-Roller elevator; 10-Rear elevator; 11-Grain bin; 12-Harvesting cutting platform; 13-Cutting platform material collection device; 14-Bridge elevator; 15-Frame beam; 16-Intermediate column. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0052] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0053] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0054] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0055] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0057] Example 1

[0058] Reference Figures 1-8 This embodiment provides a multi-stage decanting and cleaning device, including an upper cleaning device 3 and a lower cleaning device 4, and further includes:

[0059] Since there is space above the front of the upper cleaning device 3, the first-stage pre-separation device 1 is set above the front of the upper cleaning device 3, so as to make reasonable use of the space on the machine. The first-stage pre-separation device 1 is used to pick up the material on the upper cleaning device 3 and pre-separate it.

[0060] The secondary desizing device 2 is located after the primary pre-desizing device 1 and in the middle of the upper cleaning device 3. The secondary desizing device 2 is used to perform secondary separation of the material on the upper cleaning device 3.

[0061] The shaking screen device 5 is installed after the secondary descrambling device 2 and is used to remove impurities from the material after descrambling.

[0062] Specifically, the primary pre-detachment device 1 includes:

[0063] The first and third stage roller assembly 100 includes a first roller 1001, a second roller 1002, and a third roller 1003 arranged in a triangular pattern (e.g., ...). Figure 1 and Figure 2 The spike teeth 112 on the first roller 1001 and the second roller 1002 are respectively staggered with the spike teeth 112 on the third roller 1003. The first roller 1001 is connected and driven to the second roller 1002 and the third roller 1003 through the first transmission assembly and the second transmission assembly, respectively.

[0064] Side plates are provided on opposite sides of the first and third stage roller assembly 100, and the two ends of the first roller 1001, the second roller 1002 and the third roller 1003 are respectively mounted on the side plates on both sides through bearing seats 107.

[0065] The drive mechanism has its output end connected to the roller shaft 106 of the first roller 1001 for transmission.

[0066] An adjustment mechanism is connected to the first and third stage roller assembly 100 and is used to adjust the position and pitch angle of the first and third stage roller assembly 100.

[0067] It should be noted that the first roller 1001, the second roller 1002, and the third roller 1003 have the same structure, each including a roller shaft 106 and a roller body mounted on the roller shaft 106. The roller tube 111 of the roller body has evenly distributed spike teeth 112, which are round-headed roller spike teeth 112, and are mounted on spike tooth 112 mounting seats via spike tooth 112 adjusting nuts.

[0068] The front and rear parts of the side plate are respectively provided with a front adjustment shaft (not shown in the figure) and a rear adjustment shaft 118, and the adjustment mechanism is symmetrically arranged on the opposite sides of the first three-stage roller assembly 100.

[0069] Specifically: The adjustment mechanism includes a support beam 104, an adjustment plate 103, a connecting plate 101, a guide seat 113, and a lead screw 114. The two ends of the front adjustment shaft are rotatably connected to the support beams 104 on both sides through the adjustment plate 103, and the two ends of the rear adjustment shaft 118 are rotatably connected to the support beams 104 on both sides. The rear end of the support beam 104 is used to hinge with the frame of the harvester.

[0070] Connecting plates 101 are respectively provided on opposite sides of the guide seat 113. One end of the connecting plate 101 is hinged to the guide seat 113 and the other end is fixedly connected to the front end of the support beam 104.

[0071] The guide seat 113 has a threaded hole that matches the lead screw 114. The threaded portion of the lead screw 114 is threadedly connected to the threaded hole of the guide seat 113. The upper end of the lead screw 114 is used to hinge with the frame of the harvester.

[0072] Adjusting nuts are installed on the upper and lower parts of the guide seat 113. The guide seat 113 is fixed to the support beam 104 by the connecting plate 101. Multiple adjusting holes 115 are evenly distributed on the support beam 104. Multiple adjusting holes 115 are also evenly distributed on the adjusting plate 103. The upper end of the adjusting plate 103 is connected to the front adjusting shaft. The front adjusting shaft and the first three-stage roller assembly 100 are fixed by the fixing plate. The rear end of the support beam 104 is connected to the rear adjusting shaft 118. The rear end of the support beam 104 is designed with multiple mounting holes 116 for installing the rear adjusting shaft 118, which can be used for the front and rear adjustment of the pre-disengagement device. The rear end of the support beam 104 is installed on the intermediate column 16 through the bracket connecting plate 101. The upper part of the intermediate column 16 is connected and fixed to the frame beam 15 of the harvester. The adjusting mechanism is symmetrically installed on the left and right sides of the first three-stage roller assembly 100 to adjust the front and rear position and pitch angle of the first three-stage roller assembly 100.

[0073] In this embodiment, a fixed tooth plate assembly 117 is provided at the rear of the first three-stage roller assembly 100 to cooperate with it. A cover plate 108 is also provided on the nail tooth 112 plate assembly. The fixed tooth plate assembly 117 includes a fixed tooth fixing seat 109 and fixed teeth 110. Multiple fixed teeth 110 are arranged sequentially on the fixed tooth fixing seat 109. The fixed teeth 110 on the fixed tooth plate assembly 117 are stationary, while the nail teeth 112 and the fixed teeth 110 form a relative movement to cooperate, which is conducive to the separation and falling of peppers from the pepper stalks. It can also filter and brush off the bare stems from the roller, preventing them from being carried forward and wrapped around the roller. Moreover, the fixed teeth 110 are installed on the fixed tooth fixing seat 109, which has strong structural stability.

[0074] The spike teeth 112 of the first roller 1001 and the second roller 1002 have overlapping areas with the spike teeth 112 of the third roller 1003. In these areas, the speed difference between the spike teeth 112 of the different rollers is used to separate the chili peppers from the stalks. Then, the fixed teeth 110 further separate the chili peppers from the stalks by acting as a barrier, preventing the stalks from tangling with the rollers and being carried forward. The first- and third-stage roller assembly 100 has a simple structure, is easy to install, saves costs, and provides good separation.

[0075] The first transmission assembly and the second transmission assembly are respectively chain drive assemblies. One end of the roller shaft 106 of the first roller 1001 is equipped with a power input sprocket 105 and the other end is equipped with a passive sprocket 105. The passive sprocket 105 of the first roller 1001 is connected to the second roller 1002 and the third roller 1003 respectively by chain drive.

[0076] The drive mechanism includes a hydraulic motor, a hydraulic pump, and oil pipes. The output shaft of the hydraulic motor is connected to the power input sprocket 105 of the first roller 1001 via chain drive. The hydraulic pump is connected to the hydraulic motor via oil pipes and provides power to the hydraulic motor. Specifically, the hydraulic pump converts mechanical energy into the pressure energy of hydraulic oil, providing the necessary energy and pressure to the hydraulic motor. The first roller 1001 uses chain drive to distribute power to the second roller 1002 and the third roller 1003. The hydraulic motor outputs strong power and can achieve stepless speed regulation. If the rollers become clogged, reverse rotation can be achieved for material discharge. It enables rapid and shock-free speed changes and reversals, with smooth transmission, low noise, high integration, high efficiency, strong adaptability, and low cost.

[0077] The primary pre-separation device 1 can be installed above the front of the upper cleaning device 3 in the belly of the chili harvester. It does not occupy the space of the original parts of the machine, has a compact structure, and improves space utilization. Moreover, the primary pre-separation device 1 is relatively independent. When added to the original model, it can effectively improve the chili removal rate, reduce impurities, and reduce the workload of the original secondary threshing device. If the primary pre-separation device 1 breaks down unexpectedly during field operation, the power input can be cut off, the adjustment mechanism can be adjusted to the highest position, or the device can be removed. The secondary secondary threshing device 2 can still be used for operation, which can reduce the impact on productivity. During normal operation of the chili harvester, the primary pre-separation device 1, together with the secondary secondary threshing device 2, performs two separations of chili peppers and chili stalks. Compared with the original single-stage secondary threshing device, this pre-separation device effectively improves the chili removal rate, reduces losses, and lowers impurities. It enables multi-stage separation of chili stalks and chili peppers, improves the chili removal rate, reduces losses caused by chili peppers being discharged from the machine with the chili stalks, and also reduces the impurity content of the chili peppers.

[0078] In this embodiment, the front and rear parts of the secondary re-exfoliation device 2 are respectively connected to the front and rear sections of the upper cleaning device 3. The secondary re-exfoliation device 2 includes a second and third stage roller assembly 200, a re-exfoliation side plate 302, and a second drive mechanism.

[0079] The second and third stage roller assembly 200 includes a fourth roller, a fifth roller and a sixth roller arranged in a triangular pattern. The spike teeth 112 on the fourth roller and the fifth roller are respectively staggered with the spike teeth 112 on the sixth roller. The fourth roller is connected to the fifth roller and the sixth roller for transmission.

[0080] The second and third stage roller assembly 200 is provided with re-detachment side plates 302 on opposite sides, and the ends of the fourth, fifth and sixth rollers are respectively mounted on the re-detachment side plates 302 on both sides through bearing seats 107.

[0081] The output end of the second drive mechanism is connected to the drum shaft 106 of the fourth drum for transmission.

[0082] The upper cleaning device 3 has a re-extraction crossbeam 301 on each side of the middle part, and the re-extraction side plates 302 on both sides are connected and fixed to the re-extraction crossbeam 301 on both sides.

[0083] In this embodiment, the second and third-stage roller assembly 200 has the same structure as the first and third-stage roller assembly 100, and the fourth roller corresponds to the first roller 1001, the fifth roller corresponds to the second roller 1002, and the sixth roller corresponds to the third roller 1003. The second drive mechanism has the same structure as the first drive mechanism.

[0084] The secondary re-exfoliation device 2 is installed on the re-exfoliation crossbeam 301 in the middle of the upper cleaning device 3. After passing through the upper cleaning device 3, the material directly enters the secondary re-exfoliation device 2. The rear of the second and third stage roller assembly 200 is also equipped with a fixed tooth plate assembly 117 that can be used in conjunction with it, so as to re-exfoliate the peppers remaining on the pepper stems that were not removed by the primary pre-exfoliation device 1.

[0085] Specifically, the supercleaning device 3 includes two symmetrically arranged supercleaning side plates 401, a supercleaning roller 400, a sliding bearing 405, and a dial wheel spacer 406;

[0086] Multiple upper cleaning rollers 400 are arranged sequentially between the two upper cleaning side plates 401, and the two ends of the upper cleaning rollers 400 are connected to the upper cleaning side plates 401 on both sides through sliding bearings 405 respectively.

[0087] The supercleaning roller 400 includes a supercleaning roller shaft 403 and star-shaped supercleaning selector wheels 404 mounted on the supercleaning roller shaft 403. The supercleaning selector wheels 404 of adjacent supercleaning rollers 400 are staggered, and a selector wheel spacer 406 is provided between adjacent supercleaning selector wheels 404 on each supercleaning roller 400. The supercleaning selector wheels 404 and selector wheel spacers 406 are alternately installed on the supercleaning roller shaft 403. The gap of the selector wheels is adjusted by installing selector wheel spacers 406 of different sizes. The gap of the supercleaning roller shaft 403 is adjusted by changing the position of the sliding bearing 405 on the supercleaning side plate 401. Supercleaning sprockets 402 are provided on each supercleaning roller shaft 403, and the supercleaning roller shafts 403 are connected by chain drive. The designed supercleaning selector wheels 404 can increase the backward tilt angle to prevent grass entanglement and facilitate cleaning.

[0088] The lower cleaning device 4 includes a lower cleaning roller assembly and a lower cleaning fan 7 disposed below the lower cleaning roller assembly. The air outlet of the lower cleaning fan 7 is provided with a baffle 603.

[0089] The lower cleaning roller assembly includes two symmetrically arranged lower cleaning side plates and lower cleaning rollers. Multiple lower cleaning rollers are arranged sequentially between the two lower cleaning side plates, and the two ends of the lower cleaning rollers are respectively mounted to the lower cleaning side plates on both sides via bearings. A lower cleaning fan 7 is correspondingly arranged below the lower cleaning rollers. The lower cleaning roller includes a lower cleaning roller shaft and lower cleaning wheel plates 604 mounted on the lower cleaning roller shaft. The lower cleaning fan 7 is mounted on a mounting bracket 601, which can be set on the frame of a chili harvester. A baffle 603 is installed at the front end of the air outlet of the lower cleaning fan 7 to prevent materials from entering the fan. The lower cleaning wheel plates 604 are designed with a more reasonable curve design, which has strong soil permeability and effectively prevents soil sticking.

[0090] In this embodiment, the vibrating screen device 5 is installed on the frame of the chili harvester. The vibrating screen device 5 includes a vibrating screen plate 504, an eccentric connecting rod mechanism, and a third drive mechanism. The output end of the third drive mechanism is connected to the vibrating screen plate 504 for transmission through the eccentric connecting rod mechanism. The eccentric connecting rod mechanism includes a front swing arm seat 501, a boom arm 502, a boom pin 503, a swing arm 506, a first drive plate 509, a drive shaft 508, a second drive plate 507, a connecting rod 510, and a vibrating screen sprocket 511. The axle of the vibrating screen sprocket 511 is an eccentric shaft. One end of the connecting rod 510 is eccentrically mounted on the eccentric shaft of the axle of the vibrating screen sprocket 511. The third drive mechanism has the same structure as the second drive mechanism and the first drive mechanism. The third drive mechanism also uses a hydraulic motor and... The output end of the pressure motor is connected to the vibrating screen sprocket 511 via chain drive. The rotation of the vibrating screen sprocket 511 drives one end of the connecting rod 510 to rotate. The other end of the connecting rod 510 is connected to the drive plate, which drives the first drive plate 509 to swing. The first drive plate 509 is connected to the drive shaft 508 by a key, which drives the drive shaft 508 to swing at a certain angle. The drive shaft 508 is connected to the second drive plate 507. The second drive plate 507 drives the vibrating screen plate 504 to reciprocate through the swing arm 506. The vibrating screen plate 504 is also equipped with a screen box sealing plate 505. The front end of the screen box sealing plate 505 is hinged to the front end of the vibrating screen plate 504 through the hanger arm 502. The two ends of the hanger arm 502 are respectively hinged to the vibrating screen plate 504 and the screen box sealing plate 505 through the hanger pin 503. The front end of the vibrating screen plate 504 is supported and swings by the hanger arm 502.

[0091] This solution has the following advantages:

[0092] 1. The chili peppers are harvested by the tapping platform and transported by the bridge elevator 14. The chili peppers attached to the large stems first pass through the primary pre-separation device 1 for preliminary separation of the chili peppers from the stems. This not only improves the chili pepper removal rate but also reduces the working pressure of the secondary re-separation device 2. This avoids the problems of waste caused by the limited capacity of the single-stage re-separation device in the original model (existing technology model), which resulted in incomplete re-separation and some chili peppers on the stems being discharged from the machine, or the high impurity rate of direct collection. This improves the chili pepper removal rate and reduces losses.

[0093] 2. The primary pre-separation device 1 is equipped with a reasonable angle and spatial position adjustment mechanism. Based on the spatial position of the mixed material after chili harvesting, as it is thrown from the bridge elevator 14 to the upper cleaning device 3, and considering the chili yield, the position and angle of the primary pre-separation device 1 can be adjusted. This effectively prevents chilies from being knocked away by falling directly onto the drum, making the separation operation smoother and more gentle. This not only improves the working performance of the primary pre-separation device 1 but also reduces the chili breakage and loss rate. This adjustment mechanism is convenient to adjust, simple and quick to operate, has a stable structure, is easy to assemble and disassemble, and is highly adaptable.

[0094] 3. Compared with traditional models, the backward tilt angle of the upper cleaning roller 404 is increased. Through the rational design of the backward tilt angle, the material pushing capacity can be increased. At the same time, the amplitude of the tumbling and jumping of pepper fruits and stems on the cleaning roller group is enhanced, the cleaning efficiency is improved, and the phenomenon of grass entanglement in the upper cleaning is effectively avoided.

[0095] 4. To address the problem of material accumulation and blockage at the rear of the upper cleaning device 3 during field operations of traditional models, this utility model designs a shaking screen device 5. Through chain transmission, the eccentric wheel mechanism is driven to achieve the cyclical shaking of the shaking screen plate 504, allowing long pepper stalks and other debris to be smoothly discharged from the machine, avoiding the problem of waste accumulation affecting the cleaning effect. At the same time, a small portion of the peppers are screened and collected, reducing losses, enhancing the passage of pepper stalks and other debris, and improving the impurity removal capacity.

[0096] 5. The spatial arrangement structure of the upper cleaning device 3, the lower cleaning device 4, and the front and rear two-stage separation devices (i.e., the first-stage pre-separation device 1 and the second-stage re-separation device 2) was reasonably designed. All devices are integrated into the belly of the chili harvester, realizing modularity, compact structure, high space utilization, and each part works collaboratively while being relatively independent, making disassembly, maintenance and replacement of parts convenient and quick.

[0097] 6. Both the front and rear re-exfoliation devices employ three-stage roller assemblies (i.e., the first and second stage roller assemblies 100 and 200). The three rollers in each stage roller assembly rotate at different speeds, and the relative positions of the three rollers in each stage re-exfoliation device are also different. Based on operational requirements and material characteristics, the installation positions were optimized through multiple experiments to achieve the best results. During operation, the speed difference between the roller teeth 112, combined with the fixed teeth 110 on the fixed tooth plate assembly 117, generates a shearing force. This shearing and kneading action separates the chili peppers from the stems. Multiple tests have proven that the three-roller design of the first-stage pre-exfoliation device 1 and the second-stage re-exfoliation device 2 is more reasonable, saving materials while maximizing roller efficiency, resulting in low power consumption, high exfoliation rate, and low breakage rate.

[0098] Example 2

[0099] A chili harvester includes a harvesting platform 12, a frame, a bridge elevator 14, a lower elevator 8, a rear elevator 10, and a grain bin 11. It also includes the aforementioned multi-stage de-sensing and cleaning device, which is installed on the frame.

[0100] The working principle and workflow of this chili harvester:

[0101] When the machine of this utility model is working, the chili peppers are picked by the picking cutter 12. Along with some stems, leaves, weeds, and soil, they are collected on the cutting cutter collection device 13 of the picking cutter 12. The material is then conveyed backward by the bridge elevator 14. The material flow first reaches the front end of the upper cleaning device 3. As the rollers of the upper cleaning device 3 rotate, the spike teeth 112 on the third roller 1003 of the first-stage pre-separation device 1 pick up the material and send it into the first-stage pre-separation device 1. The first-stage pre-separation device 1 first separates the chili pepper mixture. Most of the chili peppers attached to the stems are separated from the stems during this process. Some chili peppers that are still attached to the stems, bare stems, and weeds continue to be conveyed backward by the rollers of the upper cleaning device 3 to the second stage. In the re-threshing device 2, a small portion of the peppers carried on the stems are completely detached during this process. The pepper fruits, leaves, and smaller impurities are screened and fall to the lower elevator 8 as the rollers move. The lower elevator 8 then transports the peppers to the lower cleaning device 4. The pepper fruits and impurities that fall to the lower cleaning device 4 are screened by the lower cleaning device 4. Soil, leaves, and short stems fall to the ground. The peppers are transported backward through the baffle 603 of the lower cleaning fan 7 to the roller elevator 9. Impurities such as leaves that fail to fall through the gaps between the rollers in the lower cleaning device 4 are blown out of the machine by the lower cleaning fan 7 at the tail of the lower cleaning device 4. Bare stems and other large impurities continue to be transported backward and discharged from the machine through the shaking screen device 5. The pepper fruits are transported to the grain bin 11 by the rear elevator 10, completing the entire cleaning and harvesting process.

[0102] When harvesting chili peppers in the field, this chili harvester can adjust various mechanisms according to different chili pepper varieties and yields to maximize the machine's working efficiency. The front end of the primary pre-detachment device 1 is mounted on the frame beam 15 of the machine frame via a connecting plate 101, and the rear end is mounted on the central column 16 in the middle of the frame. If the position and angle of the primary pre-detachment device 1 are not properly installed, it will not achieve the best working effect and may even lead to an increased chili pepper breakage rate. If it is installed too far forward, the chili peppers will fall directly onto the rotating drum, be knocked away, and break and be lost. If it is installed too far back, it will result in power loss and wasted space. By turning the adjusting nut on the lead screw 114, the guide seat 113 can be pushed up and down along the axial direction of the lead screw 114, thereby adjusting the angle of the entire primary pre-detachment device 1 relative to the horizontal plane. Multiple adjustment holes 115 are provided at both the front and rear of the support beam 104. Correspondingly, the adjustment plate 103 has multiple equally spaced adjustment holes 115. A pin is installed on one adjustment hole 115 on the support beam 104 and one adjustment hole 115 on the adjustment plate 103. The angle and front and rear position of the primary pre-detachment device 1 can be changed by passing the pin through different holes to cope with different harvesting environments. The angle and position of the primary pre-detachment device 1 can be quickly adjusted and the operation is simple.

[0103] The upper cleaning device 3 adjusts the gap of the upper cleaning roller 404 by adjusting the size of the roller spacer 406 on each upper cleaning roller shaft 403, and adjusts the gap of the upper cleaning roller shaft 403 by changing the position of the upper cleaning sliding bearing 405 on the upper cleaning side plate 401. The left and right sides are symmetrically and synchronously adjusted, which is simple to adjust and can be quickly adjusted according to the field operation conditions to achieve the best cleaning efficiency.

[0104] After two stages of threshing, the pepper stalks are removed by the shaking screen device 5. The third drive mechanism drives the shaking screen plate 504 to reciprocate through the eccentric linkage mechanism. This device can not only avoid the accumulation of a large number of stalks at the rear end of the upper cleaning, but also screen out the pepper fruits, speed up the removal of impurities, and reduce losses.

[0105] Repeated experiments have proven that the primary pre-separation device 1 can effectively separate most of the chili peppers attached to the straw, significantly reducing the workload of the secondary re-separation device 2. The adjustment mechanism of the primary pre-separation device 1 allows for rapid and precise adjustment of the device's spatial angle and position according to actual operating conditions, quickly matching optimal operating parameters. The secondary re-separation device 2 can further separate any remaining chili peppers, effectively improving the removal rate and reducing losses. The shaking screen device 5 effectively avoids the accumulation of cleaning waste such as chili stalks, which affects the cleaning effect, thus improving cleaning efficiency. This multi-stage re-separation cleaning device has a simple structure, convenient layout, and high space utilization. To achieve optimal operating results, each mechanism can be adjusted independently, making operation simple and quick. It can be disassembled and reassembled individually for easy maintenance. The entire device greatly improves the cleaning effect, achieving a high removal rate, low breakage and loss rate, and low impurity content, significantly improving the overall working efficiency and quality of the machine. It has excellent practicality and high prospects for widespread application.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

[0107] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-stage multi-cleaning device comprising an upper cleaning device (3) and a lower cleaning device (4), characterized in that, Also include: The first pre-separation device (1) is arranged above the front part of the upper cleaning device (3), which is used to pick up the material on the upper cleaning device (3) and pre-separate; The second re-separation device (2) is arranged behind the first pre-separation device (1) and in the middle of the upper cleaning device (3), which is used for secondary separation of the material on the upper cleaning device (3).

2. The multi-stage complex scutching apparatus of claim 1, wherein, The first pre-separation device (1) comprises: The first three-cylinder assembly (100) comprises a first cylinder (1001), a second cylinder (1002) and a third cylinder (1003) arranged in a triangular shape, the tines (112) on the first cylinder (1001) and the second cylinder (1002) are arranged alternately with the tines (112) on the third cylinder (1003), and the first cylinder (1001) is connected and driven with the second cylinder (1002) and the third cylinder (1003) through the first transmission assembly and the second transmission assembly respectively; The side plates are arranged on the opposite sides of the first three-cylinder assembly (100), and the two ends of the first cylinder (1001), the second cylinder (1002) and the third cylinder (1003) are respectively installed on the side plates on both sides through the bearing seat (107); The output end of the first driving mechanism is connected and driven with the cylinder shaft (106) of the first cylinder (1001); The adjusting mechanism is connected with the first three-cylinder assembly (100) for adjusting the position and pitch angle of the first three-cylinder assembly (100).

3. The multi-stage complex scutching apparatus of claim 2, wherein, The front part and the rear part of the side plate are respectively provided with front adjusting shaft and rear adjusting shaft (118), and the adjusting mechanism is symmetrically arranged on the opposite sides of the first three-cylinder assembly (100); The adjusting mechanism comprises a supporting beam (104), an adjusting plate (103), a connecting plate (101), a guide seat (113) and a lead screw (114), the two ends of the front adjusting shaft are respectively connected with the supporting beams (104) on both sides through the adjusting plate (103), a plurality of adjusting holes (115) are respectively formed in the supporting beams (104) and the adjusting plate (103), the adjusting holes (115) in the adjusting plate (103) and the supporting beams (104) are used for jointly installing the hinge, and the two ends of the rear adjusting shaft (118) are respectively connected with the supporting beams (104) on both sides, a plurality of mounting hole positions (116) for mounting the rear adjusting shaft (118) are formed in the supporting beams (104), and the rear end of the supporting beam (104) is used for being hinged with the frame of the harvester; The connecting plate (101) is hingedly connected to one end of the guide seat (113) and fixedly connected to the other end of the front end of the support beam (104); The guide seat (113) has a threaded hole matched with the screw rod (114), the threaded part of the screw rod (114) is threadedly connected with the threaded hole of the guide seat (113), and the upper end of the screw rod (114) is used for being hingedly connected with the rack of the harvester.

4. The multi-stage complex scutching apparatus of claim 2, wherein, The rear part of the first tertiary roller assembly (100) is provided with a geared plate assembly (117) capable of being used in cooperation, the geared plate assembly (117) comprises a geared fixed seat (109) and a gear tooth (110), and a plurality of gear teeth (110) are arranged on the geared fixed seat (109).

5. The multi-stage complex scutching apparatus of claim 1, wherein, The secondary reseparation device (2) comprises a second tertiary roller assembly (200), a reseparation side plate (302) and a second driving mechanism. The second tertiary roller assembly (200) comprises a fourth roller, a fifth roller and a sixth roller which are distributed in a triangular shape, the nails (112) on the fourth roller and the fifth roller are staggered with the nails (112) on the sixth roller, and the fourth roller is connected and driven with the fifth roller and the sixth roller respectively. The second tertiary roller assembly (200) is provided with the reseparation side plate (302) on the opposite sides respectively, and the two ends of the fourth roller, the fifth roller and the sixth roller are installed on the reseparation side plates (302) on the two sides through bearing seats (107) respectively. The output end of the second driving mechanism is connected and driven with the roller shaft (106) of the fourth roller. The middle part of the upper cleaning device (3) is provided with reseparation cross beams (301) on the opposite sides respectively, and the reseparation side plates (302) on the two sides are fixedly connected with the reseparation cross beams (301) on the two sides respectively.

6. The multi-stage complex scutching apparatus of claim 1, wherein, The upper cleaning device (3) comprises two symmetrically arranged upper cleaning side plates (401), upper cleaning rollers (400), sliding bearings (405) and a gear wheel spacer (406), A plurality of upper cleaning rollers (400) are arranged in sequence between the two upper cleaning side plates (401), and the two ends of the upper cleaning roller (400) are connected with the upper cleaning side plates (401) on the two sides through the sliding bearings (405) respectively. The upper cleaning roller (400) comprises an upper cleaning roller shaft (403) and an upper cleaning gear wheel (404) which is star-shaped and mounted on the upper cleaning roller shaft (403), the upper cleaning gear wheels (404) between adjacent two upper cleaning rollers (400) are staggered, and the gear wheel spacer (406) is arranged between adjacent two upper cleaning gear wheels (404) on each upper cleaning roller (400).

7. The multi-stage complex scutching apparatus of claim 1, wherein, The lower cleaning device (4) comprises a lower cleaning roller assembly and a lower cleaning fan (7) arranged below the lower cleaning roller assembly, and a material blocking grid (603) is arranged at the air outlet of the lower cleaning fan (7).

8. The multi-stage complex scutching apparatus of claim 1, wherein, The secondary reseparation device (2) is further provided with a shaking screen device (5) for removing impurities from the reseparated material.

9. The multi-stage complex scutching apparatus of claim 8, wherein, The dandy device (5) comprises a dandy plate (504), an eccentric linkage mechanism and a third driving mechanism, and the output end of the third driving mechanism is connected with the dandy plate (504) through the eccentric linkage mechanism.

10. A pepper harvester comprising a frame, characterised in that, Also included is the multi-stage complex dehulling and cleaning device according to any one of claims 1-9, which is installed on the frame.

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