Auger type bract cleaning device

Abstract

The utility model provides a packing auger type bract cleaning device which comprises a shell with an opening in the top, a primary selection conveying groove and a cleaning cavity channel are formed in the shell, a primary selection packing auger is arranged in the primary selection conveying groove, and a cleaning packing auger is arranged in the cleaning cavity channel. The primary selection conveying groove is not lower than the cleaning cavity channel, the outlet end of the primary selection conveying groove is communicated with the inlet end of the cleaning cavity channel, the top of the primary selection conveying groove is communicated with the top opening of the shell, and screen holes are formed in the bottom of the primary selection conveying groove and the bottom of the cleaning cavity channel. According to the utility model, the primary separation auger in the primary separation conveying groove is used for primarily cleaning the bracts, and the cleaning auger in the cleaning cavity channel is used for cleaning the bracts and the residual grains again, so that the grains are fully separated and recycled, and the treatment efficiency is high; when the bracts fall into the cleaning cavity channel from the primary selection conveying groove, the bracts roll and are loosened, the wrapping compactness of the remaining grains is reduced, and the cleaning effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bract cleaning devices, and particularly relates to an auger type bract cleaning device. Background Art

[0002] The bract cleaning device is an important device on a corn harvester and is used to separate the bracts from the entrained corn kernels coming from the husker. At present, the mainstream cleaning method basically adopts auger cleaning, and some large corn harvesters adopt a vibrating screen type kernel recovery device for kernel cleaning. In the auger cleaning method, the main function of the auger is to push materials. During the cleaning process, the kernels are wrapped in the bracts, and the bracts cannot be fully disturbed and dispersed, so the kernel cleaning function is weak. After the bracts are discharged by the auger, the kernels in the bracts are lost in the field. The vibrating screen type kernel recovery device drives the vibrating screen surface to swing back and forth by a crank connecting rod mechanism. The bracts make an approximate linear reciprocating motion on the screen surface. The kernels in the bracts leave the bracts due to different inertia and fall into the kernel recovery box through the shell-shaped screen holes on the screen surface. However, since the bracts cannot be transported away from the screen surface in time, the screen surface is easily blocked by sundries such as bracts, resulting in a large loss of corn kernels. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is: how to fully separate the kernels and bracts and improve the cleaning effect.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] The utility model provides an auger type bract cleaning device, which includes a housing with an open top. An initial selection conveying trough and a cleaning chamber are arranged in the housing. An initial selection auger is arranged in the initial selection conveying trough, and a cleaning auger is arranged in the cleaning chamber. The initial selection conveying trough is not lower than the cleaning chamber. The outlet end of the initial selection conveying trough is communicated with the inlet end of the cleaning chamber. The top of the initial selection conveying trough is communicated with the top opening of the housing. Screen holes are arranged at the bottom of the initial selection conveying trough and the bottom of the cleaning chamber.

[0006] The beneficial effects of the utility model are:

[0007] By adopting the utility model, the initial selection auger in the initial selection conveying trough preliminarily cleans the bracts and the entrained kernels, and most of the kernels are recovered. The cleaning auger in the cleaning chamber cleans the bracts and the remaining kernels again, and the remaining kernels are recovered. The full separation and recovery of the kernels are realized, and the processing efficiency is high. In addition, due to the action of the height difference, the bracts roll and loosen when falling from the initial selection conveying trough into the cleaning chamber, reducing the tightness of the remaining kernels wrapped, and improving the cleaning effect.

[0008] On the basis of the above technical solution, the utility model can also be improved as follows.

[0009] Further, the extending direction of the outlet end of the primary selection conveying trough is opposite to that of the outlet end of the cleaning chamber passage.

[0010] The conveying directions of the primary selection auger and the cleaning auger are opposite, reducing the total length space occupied by the primary selection auger and the cleaning auger, with a compact structure and reduced occupied space.

[0011] Further, an inclined transfer passage is provided on one side of the outlet end of the primary selection conveying trough, and the lower end of the transfer passage extends to one side of the inlet end of the cleaning chamber passage.

[0012] When the husks are transferred, they flow obliquely downward along the transfer passage, facilitating the tumbling and dispersion of the husks, thereby releasing the grains wrapped inside and improving the cleaning effect.

[0013] Further, a scraper is provided at one end of the primary selection auger, and the scraper is connected to the auger blade of the primary selection auger; the scraper is located at the outlet end of the primary selection conveying trough.

[0014] The scraper can scrape the husks to the transfer passage, avoiding the retention of the husks and having good reliability.

[0015] Further, there are two primary selection conveying troughs and two cleaning chamber passages. The outlet end of each primary selection conveying trough corresponds to and communicates with the inlet end of a cleaning chamber passage; the two cleaning chamber passages are located between the two primary selection conveying troughs, and one side wall of the primary selection conveying trough is connected to the inner side wall of the housing.

[0016] It is convenient for the husks to fall into the two cleaning chamber passages on both sides along the side wall of the housing, the top curved surface or inclined surface of the cleaning chamber passage for preliminary cleaning and conveying, improving the processing efficiency; in addition, the small distance between the two cleaning chamber passages makes the falling range of the husks at the outlet of the cleaning chamber passage small, facilitating centralized collection.

[0017] Further, a spacer block is also provided above the two cleaning chamber passages. The two sides of the spacer block are inclined surfaces, and the lower side of the inclined surface is connected to the side wall of the primary selection conveying trough.

[0018] It is convenient for the husks falling into the middle of the housing to be evenly distributed and slide into the two primary selection conveying troughs for conveying. The loads of the two primary selection augers are basically the same, with good reliability, and at the same time, the accumulation and retention of the husks are avoided.

[0019] Further, two semi-cylindrical grooves are provided at the bottom of the spacer block, and the semi-cylindrical grooves form the upper half side walls of the cleaning chamber passage; the cleaning chamber passage is a cylindrical chamber passage.

[0020] The structure is compact, the installation is convenient, and the weight of the device is reduced; at the same time, the cleaning auger in the cleaning chamber passage can be exposed by removing the spacer block, which is convenient for maintenance.

[0021] Further, a transmission shaft is connected to the outer side wall of the housing through a bearing block. Two drive bevel gears with opposite directions are arranged on the transmission shaft. One end of the cleaning auger extends out of the housing and is provided with a driven bevel gear. Each driven bevel gear corresponds to and meshes with a drive bevel gear.

[0022] One end of the transmission shaft can be connected to a driving device such as an engine through a sprocket mechanism, realizing the synchronous rotation of the two cleaning augers in opposite directions; by meshing two drive bevel gears with opposite directions with two driven bevel gears respectively, it is convenient to balance the axial force on the transmission shaft, improve stability, reduce bearing stress, and have a long service life.

[0023] Further, a slide plate is also arranged around the opening at the top of the housing, and the lower side of the slide plate is connected to the inner side wall of the housing.

[0024] By expanding the opening of the housing through the slide plate, it is convenient to fully collect the bracts and avoid waste; at the same time, the bracts slide along the side wall of the housing into the primary selection conveying groove, avoiding the accumulation and retention of bracts and improving the processing speed.

[0025] Further, an outlet protection cover is fixed to the outer side wall of the housing. The outlet end of the cleaning chamber extends into the outlet protection cover, and the outlet end of the cleaning auger is connected to the side wall of the outlet protection cover through a bearing.

[0026] It is convenient to convey the bracts into the outlet protection cover and make the bracts fall out concentratedly from the lower side of the outlet protection cover for convenient collection; at the same time, the outlet protection cover can protect the outlet end of the cleaning auger and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional structural schematic diagram of the first axonometric of the present utility model.

[0028] Figure 2 is a three-dimensional structural schematic diagram of the second axonometric of the present utility model.

[0029] Figure 3 is a schematic diagram of the positional relationship between the primary selection conveying groove and the cleaning chamber.

[0030] Figure 4 is a schematic diagram of the positional relationship between the primary selection auger and the cleaning auger.

[0031] In the drawings, the technical features represented by the reference numerals are as follows:

[0032] 1 - housing; 2 - primary selection conveying groove; 3 - primary selection auger; 4 - cleaning chamber; 5 - cleaning auger; 6 - transfer channel; 7 - spacer block; 8 - slide plate; 9 - driven bevel gear; 10 - drive bevel gear; 11 - transmission shaft; 12 - outlet protection cover; 13 - scraper; 14 - grain separation teeth; 15 - throwing plate. Detailed implementation mode

[0033] The principles and features of the present utility model will be described below. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0034] Refer to the present utility model Figures 1-4 .

[0035] The present utility model provides a screw-type bract cleaning device, which includes a housing 1 with an open top. A primary selection conveying trough 2 and a cleaning chamber 4 are arranged in the housing 1. A primary selection screw 3 is arranged in the primary selection conveying trough 2, and a cleaning screw 5 is arranged in the cleaning chamber 4. The primary selection conveying trough 2 is not lower than the cleaning chamber 4. The outlet end of the primary selection conveying trough 2 is communicated with the inlet end of the cleaning chamber 4. The top of the primary selection conveying trough 2 is communicated with the top opening of the housing 1. Sieve holes are arranged at the bottom of the primary selection conveying trough 2 and the bottom of the cleaning chamber 4.

[0036] Principle:

[0037] Both the primary selection screw 3 and the cleaning screw 5 are rotatably connected to the housing 1, and both extend out of the housing 1 at one end for connecting to a driving device to obtain power. The structure for obtaining power is a conventional installation method of the screw. During installation, the housing 1 is arranged below the outlet of the peeling machine of the harvester, and the top opening of the housing 1 faces the outlet of the peeling machine.

[0038] During operation, the bracts from the outlet of the peeling machine fall into the primary selection conveying trough 2. The primary selection screw 3 sends the bracts to the outlet end of the primary selection conveying trough 2. During the conveying process, the bracts are disturbed, so that most of the entrained grains are separated, and the grains fall out from the sieve holes at the bottom of the primary selection conveying trough 2. Then, the bracts fall from the outlet end of the primary selection conveying trough 2 into the inlet end of the cleaning chamber 4. During the transfer, the bracts become loose during the tumbling process, reducing the tightness of the remaining grains wrapped. Then, the cleaning screw 5 conveys the bracts to the outlet end of the cleaning chamber 4, separating the grains, which fall out from the sieve holes at the bottom of the cleaning chamber 4. And the cleaning screw 5 conveys the bracts out from the outlet end of the cleaning chamber 4.

[0039] By adopting the present utility model, the primary selection screw 3 in the primary selection conveying trough 2 preliminarily cleans the bracts and the entrained grains therein, recovering most of the grains; the cleaning screw 5 in the cleaning chamber 4 cleans the bracts and the remaining grains again, recovering the remaining grains; realizing the full separation and recovery of the grains, with high processing efficiency; in addition, due to the effect of the height difference, the bracts tumble and become loose when falling from the primary selection conveying trough 2 into the cleaning chamber 4, reducing the tightness of the remaining grains wrapped, and improving the cleaning effect.

[0040] Furthermore, the extending direction of the outlet end of the primary selection conveying trough 2 is opposite to the extending direction of the outlet end of the cleaning chamber 4.

[0041] The conveying directions of the primary selection auger 3 and the cleaning auger 5 are opposite, reducing the total length space occupied by the primary selection auger 3 and the cleaning auger 5, with a compact structure and reduced occupied space.

[0042] Furthermore, as Figure 3 shown: An inclined transfer channel 6 is provided on one side of the outlet end of the primary selection conveying trough 2, and the lower end of the transfer channel 6 extends to one side of the inlet end of the cleaning chamber 4.

[0043] When the husks are transferred, they flow obliquely downward along the transfer channel 6, facilitating the tumbling and dispersion of the husks, thereby releasing the grains wrapped inside and improving the cleaning effect.

[0044] Furthermore, as Figure 4 shown: A scraper 13 is provided at one end of the primary selection auger 3, and the scraper 13 is connected to the auger blade of the primary selection auger 3; the scraper 13 is located at the outlet end of the primary selection conveying trough 2.

[0045] The scraper 13 can scrape the husks to the transfer channel 6, avoiding the retention of husks and having good reliability.

[0046] Furthermore, as Figures 1-4 shown: There are two primary selection conveying troughs 2 and two cleaning chambers 4. The outlet end of each primary selection conveying trough 2 corresponds to and is connected to the inlet end of a cleaning chamber 4; the two cleaning chambers 4 are located between the two primary selection conveying troughs 2, and one side wall of the primary selection conveying trough 2 is connected to the inner side wall of the housing 1.

[0047] It is convenient for the husks to fall into the two cleaning chambers 4 on both sides along the side wall of the housing 1, the top curved surface or inclined surface of the cleaning chamber 4 for preliminary cleaning and conveying, improving the processing efficiency; in addition, the distance between the two cleaning chambers 4 is small, making the falling range of the husks at the outlet of the cleaning chamber 4 small and facilitating centralized collection.

[0048] Furthermore, a spacer block 7 is provided above the two cleaning chambers 4. The two sides of the spacer block 7 are inclined surfaces, and the lower side of the inclined surface is connected to the side wall of the primary selection conveying trough 2.

[0049] It is convenient for the husks falling into the middle of the housing 1 to be evenly distributed and slide into the two primary selection conveying troughs 2 for conveying. The loads of the two primary selection augers 3 are basically the same, with good reliability, and at the same time, the accumulation and retention of husks are avoided.

[0050] Furthermore, two semi-cylindrical grooves are provided at the bottom of the spacer block 7, and the semi-cylindrical grooves form the upper half side wall of the cleaning chamber 4; the cleaning chamber 4 is a cylindrical chamber.

[0051] The structure is compact, the installation is convenient, and the weight of the device is reduced; at the same time, the cleaning auger 5 inside the cleaning chamber 4 can be exposed by removing the spacer block 7, which is convenient for maintenance.

[0052] Further, a transmission shaft 11 is also connected to the outer side wall of the housing 1 through a bearing block. Two drive bevel gears 10 with opposite directions are provided on the transmission shaft 11. One end of the cleaning auger 5 extends out of the housing 1 and is provided with a driven bevel gear 9. Each driven bevel gear 9 corresponds to and meshes with one drive bevel gear 10.

[0053] One end of the transmission shaft 11 can be connected to a driving device such as an engine through a sprocket mechanism, realizing the driving of the two cleaning augers 5 to rotate synchronously in opposite directions; by respectively meshing the two drive bevel gears 10 with opposite directions with the two driven bevel gears 9, it is convenient to balance the axial force on the transmission shaft 11, improve the stability, reduce the bearing stress, and has a long service life.

[0054] Further, a slide plate 8 is also provided around the opening at the top of the housing 1. The lower side of the slide plate 8 is connected to the inner side wall of the housing 1.

[0055] By expanding the opening of the housing 1 through the slide plate 8, it is convenient to fully collect the bracts and avoid waste; at the same time, the bracts slide along the side wall of the housing 1 into the primary selection conveying groove 2, avoiding the accumulation and retention of the bracts and improving the processing speed.

[0056] Further, an outlet protection cover 12 is also fixed to the outer side wall of the housing 1. The outlet end of the cleaning chamber 4 extends into the outlet protection cover 12. The outlet end of the cleaning auger 5 is connected to the side wall of the outlet protection cover 12 through a bearing.

[0057] It is convenient to convey the bracts into the outlet protection cover 12 and make the bracts fall out concentratedly from the lower side of the outlet protection cover 12, facilitating collection; at the same time, the outlet protection cover 12 can protect the outlet end of the cleaning auger 5 and improve the safety.

[0058] Preferably, the cleaning auger 5 includes an auger shaft. The inlet end of the auger shaft is provided with auger blades. Multiple grain separating teeth 14 are distributed in the middle of the auger shaft. The outlet end of the auger shaft is provided with a throwing plate 15. The grain separating teeth 14 and the throwing plate 15 respectively extend along the radial direction of the auger shaft.

[0059] In the description of the present invention, it should be understood that if descriptive terms indicating orientation, direction or positional relationship appear, such as: "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated in this specification is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of understanding the present invention and simplifying the description, rather than indicating or implying that the part, component or whole referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0060] In addition, if order description terms such as "first", "second", etc. appear, their use in this specification is for the convenience of understanding or simplifying the description. For example, in order to distinguish multiple technical features of the same type or function and when it is necessary to mention them separately, this specification may use the method of prefixing or suffixing order description terms to distinguish them. Therefore, it cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0061] In the present utility model, if terms describing the relationship between structure and function are used, such as "mounted", "connected", "joined", "fixed", etc., unless otherwise clearly specified and limited, they should be understood in a broad sense. For example, "mounted", "connected", "joined", etc. can be a fixed connection, a detachable connection, or integrated; can be a mechanical connection or an electrical connection; can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components; "fixed" can be a fixed connection formed integrally or a detachable fixation through fasteners; can be directly fixed or fixed through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above description terms in the present utility model can be understood according to the specific situation, the context, the coherence of the context before and after, etc.

[0062] In the present utility model, if description terms containing the meaning of attachment or connection appear, such as the first feature is "on" or "under" the second feature, unless otherwise clearly specified and limited, it should not be understood in a restrictive sense. For example, "on" or "under" can be that the first and second features are in direct contact or the first feature and the second feature are in indirect contact through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above description terms in the present utility model can be understood according to the specific situation, the context, the coherence of the context before and after, etc.

[0063] Furthermore, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0064] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc., means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments, examples, and the features of different embodiments and examples described in this specification, and these combinations or combinations should fall within the scope encompassed by the present utility model.

[0065] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can, within the scope of information available in the public domain, make changes, modifications, substitutions, and variations to the above embodiments in combination with the technical inspiration given in this application document, and still be covered by the protection scope of this application.

Claims

1. A screw-type bract cleaning device, characterized in that: It includes a housing (1) with an opening at the top. Inside the housing (1), there is a primary conveying trough (2) and a cleaning chamber (4). Inside the primary conveying trough (2), there is a primary auger (3), and inside the cleaning chamber (4), there is a cleaning auger (5); the primary conveying trough (2) is not lower than the cleaning chamber (4). The outlet end of the primary conveying trough (2) is connected to the inlet end of the cleaning chamber (4). The top of the primary conveying trough (2) is connected to the top opening of the housing (1). Both the bottom of the primary conveying trough (2) and the bottom of the cleaning chamber (4) are provided with sieve holes.

2. The auger-type bract cleaning device according to claim 1, wherein: The extending direction of the outlet end of the primary conveying trough (2) is opposite to the extending direction of the outlet end of the cleaning chamber (4).

3. The auger-type bract cleaning device according to claim 2, wherein: On one side of the outlet end of the primary conveying trough (2), there is an inclined transfer channel (6). The lower end of the transfer channel (6) extends to one side of the inlet end of the cleaning chamber (4).

4. The auger - type bract cleaning device according to claim 3, characterized in that: One end of the primary auger (3) is provided with a scraper (13). The scraper (13) is connected to the auger blade of the primary auger (3); the scraper (13) is located at the outlet end of the primary conveying trough (2).

5. The auger-type bract cleaning device according to claim 3, wherein: There are two primary conveying troughs (2) and two cleaning chambers (4). The outlet end of each primary conveying trough (2) corresponds to and is connected to the inlet end of one cleaning chamber (4); the two cleaning chambers (4) are located between the two primary conveying troughs (2). One side wall of the primary conveying trough (2) is connected to the inner side wall of the housing (1).

6. The auger-type bract cleaning device according to claim 5, wherein: Above the two cleaning chambers (4), there is also a spacer block (7). The two sides of the spacer block (7) are inclined planes, and the lower side of the inclined plane is connected to the side wall of the primary conveying trough (2).

7. The auger-type bract cleaning device according to claim 6, characterized in that: At the bottom of the spacer block (7), there are two semi-cylindrical grooves. The semi-cylindrical grooves form the upper half side wall of the cleaning chamber (4); the cleaning chamber (4) is a cylindrical chamber.

8. The auger-type bract cleaning device according to claim 5, wherein: The outer side wall of the housing (1) is also connected with a transmission shaft (11) through a bearing seat. There are two drive bevel gears (10) with opposite directions on the transmission shaft (11). One end of the cleaning auger (5) extends out of the housing (1) and is provided with a driven bevel gear (9). Each driven bevel gear (9) corresponds to and meshes with one drive bevel gear (10).

9. The auger-type bract cleaning device according to claim 5, characterized in that: Around the top opening of the housing (1), there is also a slide plate (8). The lower side of the slide plate (8) is connected to the inner side wall of the housing (1).

10. The auger-type bract cleaning device according to claim 1, characterized in that: The outer side wall of the housing (1) is also fixed with an outlet protective cover (12). The outlet end of the cleaning chamber (4) extends into the outlet protective cover (12). The outlet end of the cleaning auger (5) is connected to the side wall of the outlet protective cover (12) through a bearing.

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