Grain screening corn harvester
By designing first- and second-level screening devices and screw conveyors in the corn harvester, combining the collection box and blowing fans, the problem of bracts wrapped around the grains in the corn harvester is solved, and efficient grain recycling and grain are achieved Waste reduction.
Patent Information
- Application Number
- CN202420915743.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing corn harvesters are prone to wrap corn grains during the discharge of bracts, resulting in grain loss.
A grain sieving corn harvester is designed, including primary and secondary sieving devices, consisting of the first and second sieving mesh and the conveying mechanism respectively. The mesh size of the sieving mesh is designed to distinguish the grains and bracts and through The screw conveyor enhances screening efficiency, combining the collection box and a blowing fan to achieve secondary screening and impurity removal.
It effectively reduces the loss of corn grains, improves harvesting efficiency, and minimizes food waste as much as possible.
Smart Images
Figure CN222216510U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of agricultural machinery, in particular to a grain screening corn harvester. Background Art
[0002] With the continuous advancement of modern agricultural technology, agricultural machinery is being used more and more widely in agricultural production, especially in the field of corn planting. The popularity of corn harvesters has greatly improved the efficiency of corn harvesting.
[0003] Corn harvesters can automatically pick and peel corn ears. However, most corn harvesters currently have a common corn kernel wrapping phenomenon during the husk discharge process, that is, the husks and corn kernels are discharged out of the machine together, resulting in the loss of corn kernels. Utility Model Content
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a grain screening corn harvester, which aims to solve the problem in the related art that the husks carry the corn grains together and are discharged from the corn harvester, resulting in grain loss.
[0005] The utility model provides a grain screening corn harvester, comprising:
[0006] Harvester body;
[0007] A primary screening device is arranged below the peeling mechanism of the harvester body, and comprises a first screen and a first conveying mechanism, wherein the first conveying mechanism is arranged on the top of the first screen, and the mesh size of the first screen is larger than the size of the grains and smaller than the size of the bracts;
[0008] A secondary screening device is arranged below the husk discharge end of the primary screening device, comprising a second screen and a second conveying mechanism, wherein the second conveying mechanism is arranged on the top of the second screen, and the mesh size of the second screen is larger than the size of the grains and smaller than the size of the husks;
[0009] The grain collecting device is arranged below the first screen and the second screen.
[0010] According to the grain screening corn harvester provided by the utility model, the first conveying mechanism and the second conveying mechanism each include at least one set of screw conveyors.
[0011] According to the grain screening corn harvester provided by the utility model, the number of the screw conveyors included in the first conveying mechanism and / or the second conveying mechanism is greater than or equal to two groups, and the multiple groups of screw conveyors are arranged in parallel.
[0012] According to the grain screening corn harvester provided by the utility model, the conveying directions of the first conveying mechanism and the second conveying mechanism are perpendicular.
[0013] According to the grain screening corn harvester provided by the utility model, the cross-sections of the first screen and the second screen are arc-shaped.
[0014] According to the grain screening corn harvester provided by the utility model, the grain collecting device comprises:
[0015] A first collecting box, wherein the first collecting box is located below the first screen and has an open top;
[0016] The second collecting box is located below the second screen and has an open top.
[0017] According to the grain screening corn harvester provided by the utility model, the second collecting box is connected to the first collecting box, the bottom plate of the second collecting box extends downward and obliquely toward the direction close to the first collecting box, and the bottom plate of the second collecting box is connected to the bottom plate of the first collecting box close to the side of the first collecting box.
[0018] According to the grain screening corn harvester provided by the utility model, the grain collecting device also includes a third conveying mechanism, the third conveying mechanism is arranged at the inner bottom of the first collecting box body and the second collecting box body, the first collecting box body is provided with a grain output interface, and the third conveying mechanism is used to convey the grains to the grain output interface.
[0019] According to the grain screening corn harvester provided by the utility model, the third conveying mechanism includes a scraper conveyor or a screw conveyor.
[0020] The grain screening corn harvester provided by the utility model also includes a dust blowing fan, which is arranged on the first collecting box or the second collecting box, and the air outlet of the dust blowing fan faces the interior of the first collecting box and the second collecting box.
[0021] The utility model adopts the above technical solution, which has the following advantages:
[0022] The utility model provides a grain screening corn harvester, comprising a harvester body, a primary screening device, a secondary screening device and a grain collecting device. The primary screening device is arranged below the peeling mechanism of the harvester body, and comprises a first screen and a first conveying mechanism, the first conveying mechanism is arranged on the top of the first screen, and the mesh size of the first screen is larger than the size of the grain and smaller than the size of the bract. The secondary screening device is arranged below the bract discharge end of the primary screening device, and comprises a second screen and a second conveying mechanism, the second conveying mechanism is arranged on the top of the second screen, and the mesh size of the second screen is larger than the size of the grain and smaller than the size of the bract. The grain collecting device is arranged below the first screen and the second screen. When working, the bracts with the grains dropped by the peeling mechanism fall downward onto the first screen, and the first conveying mechanism drives the bracts to move toward the bract discharge end. During the movement, the grains pass through the first screen and fall into the grain collecting device, while the bracts are blocked on the first screen, and are discharged from the bract discharge end of the first screen under the drive of the first conveying mechanism, and then fall onto the second screen. The second conveying mechanism drives the husks to move on the second screen. During the movement, the grains pass through the mesh of the second screen and fall into the grain collecting device, while the husks are blocked on the second screen and are discharged from the husk discharge end of the second screen under the drive of the second conveying mechanism. The grain screening corn harvester provided by the utility model can perform secondary screening on the husks with grains dropped by the peeling mechanism, so that most of the grains are recovered and food waste is reduced as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 This is one of the structural schematic diagrams of the peeling mechanism and the screening device provided in one embodiment of the utility model;
[0025] Figure 2 This is the second structural schematic diagram of the peeling mechanism and the screening device provided in one embodiment of the utility model;
[0026] Figure 3 This is the third structural schematic diagram of the peeling mechanism and the screening device provided in one embodiment of the utility model.
[0027] Reference numerals:
[0028] 100, peeling mechanism; 200, primary screening device; 210, first screen; 220, first conveying mechanism; 300, secondary screening device; 310, second screen; 320, second conveying mechanism; 410, first collecting box; 420, second collecting box; 430, third conveying mechanism; 500, blowing fan. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.
[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0034] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0035] The utility model provides a grain screening corn harvester, comprising a primary screening device arranged below a peeling mechanism and a secondary screening device arranged below a husk discharge end of the primary screening device. The husks entrained with grains are subjected to two-stage screening, so that the grains entrained in the husks can be fully separated and dropped into a grain collecting device for collection, thereby greatly reducing food waste.
[0036] Combine the following Figures 1 to 3 The utility model describes a grain screening corn harvester.
[0037] An embodiment of the utility model provides a grain screening corn harvester, comprising a harvester body, a screening device and a grain collecting device.
[0038] The harvester body includes a vehicle body, an ear picking mechanism, an ear lifting mechanism, a peeling mechanism 100 and an ear recovery box. The ear picking mechanism is arranged at the front end of the vehicle body, the peeling mechanism 100 is arranged at the top of the vehicle body near the middle, the ear lifting mechanism is arranged between the ear picking mechanism and the peeling mechanism 100, and the ear recovery box is arranged at the rear side of the peeling mechanism 100.
[0039] When the vehicle is moving, the ear picking mechanism is used to pick the fruit ears on the straw in front of the vehicle, and then the fruit ear lifting mechanism transports the picked fruit ears to the peeling mechanism 100 for peeling, and the peeled fruit ears enter the fruit ear recovery box.
[0040] In the peeling process, it is inevitable that the kernels will fall, and the fallen kernels will fall down together with the peeled peels and straw debris. In order to recover the fallen kernels and reduce food waste, the kernel screening corn harvester provided in the embodiment of the utility model is provided with the above-mentioned screening device and kernel collecting device.
[0041] The screening device includes a primary screening device 200 and a secondary screening device 300. The primary screening device 200 is arranged below the peeling mechanism 100, and includes a first screen 210 and a first conveying mechanism 220. The first conveying mechanism 220 is arranged on the top of the first screen 210. The mesh size of the first screen 210 is larger than the size of the grains and smaller than the size of the bracts.
[0042] Specifically, the top of the first screen 210 is open, and the open area at least covers the falling area of the bracts to ensure that all the bracts can fall into the first screen 210 .
[0043] The first conveying mechanism 220 is disposed on the top of the first screen 210 . The conveying direction of the first conveying mechanism 220 may be horizontal and toward one end of the first screen 210 , which is the bract discharge end of the first screen 210 .
[0044] During operation, the first conveying mechanism 220 moves, and when bracts and seeds fall from above, the first conveying mechanism 220 drives the bracts and seeds to move toward the bract discharge end of the first screen 210. Since the mesh size of the first screen 210 is larger than the size of the seeds and smaller than the size of the bracts, during the movement, the seeds pass through the mesh of the first screen 210 and fall, and the bracts are blocked on the first screen 210 and continue to move toward the bract discharge end with the first conveying mechanism 220, thereby achieving a single screening of the bracts and seeds.
[0045] The secondary screening device 300 is arranged below the bract discharge end of the primary screening device 200, and includes a second screen 310 and a second conveying mechanism 320. The second conveying mechanism 320 is arranged on the top of the second screen 310. The mesh size of the second screen 310 is larger than the size of the grains and smaller than the size of the bracts.
[0046] Specifically, the top of the second screen 310 is open and is located below the downstream end of the bract discharge end of the primary screening device 200. When the bracts are discharged from the bract discharge end of the primary screening device 200, they will fall onto the second screen 310 of the secondary screening device 300. At this time, the bracts may still contain some grains.
[0047] The second conveying mechanism 320 is disposed on the top of the second screen 310 , and the conveying direction of the second conveying mechanism 320 can also be horizontal and toward one end of the second screen 310 , which is the bract discharge end of the second screen 310 .
[0048] During operation, the second screen 310 receives the bracts containing the seeds discharged by the primary screening device 200, and the second conveying mechanism 320 is used to drive the bracts to move toward the bract discharge end of the second screen 310. Since the mesh size of the second screen 310 is larger than the size of the seeds and smaller than the size of the bracts, during the movement, the seeds pass through the mesh of the second screen 310 and fall, and the bracts are blocked on the second screen 310 and continue to move toward the bract discharge end of the second screen 310, thereby realizing secondary screening of the seeds and bracts.
[0049] The seed collecting device is disposed below the first sieve 210 and the second sieve 310 to receive the seeds dropped from the first sieve 210 and the second sieve 310 .
[0050] The grain screening corn harvester provided by the utility model is provided with a two-stage screening device, which screens the bracts containing the grains twice, so that the grains contained in the bracts can be screened and recovered as much as possible, thereby reducing the waste of grain.
[0051] In some embodiments of the present invention, the first conveying mechanism 220 and the second conveying mechanism 320 each include at least one set of screw conveyors, and when the number of screw conveyors is greater than or equal to two sets, the multiple sets of screw conveyors are arranged in parallel.
[0052] The screw conveyor can drive the bracts to rotate around the rotating axis of the screw conveyor while conveying the bracts along the rotating axis, thereby strengthening the disturbance of the bracts and the grains, causing the bracts and the grains to move relative to each other, and facilitating the separation of the grains from the bracts.
[0053] For example, the first conveying mechanism 220 may include two sets of screw conveyors, both of which extend in the left-right direction, and the rotation axes of the two sets of screw conveyors are located on the same horizontal plane. Providing two sets of screw conveyors can increase the conveying amount of bracts on the one hand, and on the other hand, increase the coverage area of the first conveying mechanism 220 without increasing the outer diameter of the screw conveyor.
[0054] The second conveying mechanism 320 can be provided with a group of screw conveyors, which can extend in the front-to-back direction and be arranged perpendicular to the rotation axes of the two screw conveyors of the first conveying mechanism 220. This can reduce the area occupied by the first conveying mechanism 220 and the second conveying mechanism 320, making it easier to install them on the body of the harvester.
[0055] In some embodiments of the present invention, since the first conveying mechanism 220 and the second conveying mechanism 320 are both screw conveyors, in order to match the shape of the screw conveyors, the first screen 210 and the second screen 310 can be screens with semicircular cross-sections.
[0056] In some embodiments of the present invention, the seed collecting device includes a first collecting box 410 and a second collecting box 420 .
[0057] The first collecting box 410 is located below the first screen 210, and the second collecting box 420 is located below the second screen 310. The tops of the first collecting box 410 and the second collecting box 420 are both open, so that the seeds dropped from the first screen 210 can directly enter the first collecting box 410, and the seeds dropped from the second screen 310 can directly enter the second collecting box 420.
[0058] In addition, the bottoms of the first collecting box 410 and the second collecting box 420 may be communicated with each other to form a collecting container.
[0059] In some embodiments of the present invention, the bottom plate of the second collection box 420 may extend downward and toward the first collection box 410 , and the bottom plate of the second collection box 420 is connected to the bottom plate of the first collection box 410 near the side of the first collection box 410 .
[0060] In this way, when the grains dropped from the second screen 310 enter the second collecting box 420, they can slide directly into the first collecting box 410 along the inclined surface of the bottom plate, so as to facilitate grain unloading.
[0061] In some embodiments of the utility model, the grain collecting device also includes a third conveying mechanism 430, which is arranged at the inner bottom of the first collecting box 410 and the second collecting box 420, and a grain output interface is arranged on the first collecting box 410. The third conveying mechanism 430 is used to convey the grains to the grain output interface.
[0062] In addition, in another embodiment of the utility model, the bottom plate of the first collection box 410 extends downward and tilted toward the direction close to the second collection box 420, and the bottom plate of the second collection box 420 extends downward and toward the direction close to the first collection box 410. The bottom plates of the first collection box 410 and the second collection box 420 are connected by a flat plate, so that the bottoms of the first collection box 410 and the second collection box 420 form an inverted trapezoidal box structure. The seed output interface is arranged at one end of the inverted trapezoidal box structure.
[0063] The third conveying mechanism 430 may be a screw conveyor, which may be disposed in an inverted trapezoidal box structure formed by the bottom plates of the first collection box 410 and the second collection box 420, and the conveying direction is toward the seed output interface. In this way, the seeds entering the first collection box 410 and the second collection box 420 will slide along the inclined surface of the bottom plate into the inverted trapezoidal box structure, and then be conveyed to the seed output interface by the screw conveyor.
[0064] In addition, the third conveying mechanism 430 may also be a conveying mechanism such as a scraper conveyor or a conveyor belt.
[0065] In the actual working process, it is inevitable that some small-sized straw or bract debris will pass through the mesh of the first screen 210 or the second screen 310 and enter the grain collecting device. In order to reduce the debris mixed in the recovered grains, a blowing fan 500 can be set on the first collection box 410 or the second collection box 420, and the blowing fan 500 blows air to the grains in the first collection box 410 and the second collection box 420 to remove the debris and other impurities in the grains.
[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.
Claims
1. A grain screening corn harvester, characterized in that: include: Harvester body; A primary screening device (200) is arranged below the peeling mechanism (100) of the harvester body, and comprises a first screen (210) and a first conveying mechanism (220), wherein the first conveying mechanism (220) is arranged on the top of the first screen (210), and the mesh size of the first screen (210) is larger than the size of the grains and smaller than the size of the bracts; A secondary screening device (300) is arranged below the bract discharge end of the primary screening device (200), comprising a second screen (310) and a second conveying mechanism (320), wherein the second conveying mechanism (320) is arranged on the top of the second screen (310), and the mesh size of the second screen (310) is larger than the size of the grains and smaller than the size of the bracts; A seed collecting device is arranged below the first screen (210) and the second screen (310).
2. The grain screening corn harvester according to claim 1, characterized in that: The first conveying mechanism (220) and the second conveying mechanism (320) each include at least one set of screw conveyors.
3. The grain screening corn harvester according to claim 2, characterized in that: The first conveying mechanism (220) and / or the second conveying mechanism (320) comprises screw conveyors in a number greater than or equal to two groups, and the multiple groups of screw conveyors are arranged in parallel.
4. The grain screening corn harvester according to claim 2 or 3, characterized in that: The conveying directions of the first conveying mechanism (220) and the second conveying mechanism (320) are perpendicular.
5. The grain screening corn harvester according to claim 2 or 3, characterized in that: The cross-sections of the first screen (210) and the second screen (310) are arc-shaped.
6. The grain screening corn harvester according to claim 1, characterized in that: The seed collecting device comprises: A first collecting box (410), the first collecting box (410) being located below the first screen (210), and the top of the first collecting box (410) being open; A second collecting box (420), wherein the second collecting box (420) is located below the second screen (310), and the top of the second collecting box (420) is open.
7. The grain screening corn harvester according to claim 6, characterized in that: The second collection box (420) is connected to the first collection box (410), and the bottom plate of the second collection box (420) extends downward and obliquely toward the first collection box (410), and the bottom plate of the second collection box (420) is connected to the bottom plate of the first collection box (410) near the side of the first collection box (410).
8. The grain screening corn harvester according to claim 7, characterized in that: The seed collecting device further comprises a third conveying mechanism (430), wherein the third conveying mechanism (430) is arranged at the inner bottom of the first collecting box (410) and the second collecting box (420), and a seed output interface is arranged on the first collecting box (410), and the third conveying mechanism (430) is used to convey the seeds to the seed output interface.
9. The grain screening corn harvester according to claim 8, characterized in that: The third conveying mechanism (430) includes a scraper conveyor or a screw conveyor.
10. The grain screening corn harvester according to claim 6, characterized in that: It also includes a blowing fan (500), which is arranged on the first collection box (410) or the second collection box (420), and the air outlet of the blowing fan (500) faces the interior of the first collection box (410) and the second collection box (420).