Full-automatic grain impurity removing instrument
The fully automatic grain impurity remover features a multi-stage screening and flipping design, which solves the problem of low efficiency in traditional manual impurity removal. It achieves efficient and automated grain impurity removal, ensuring the cleanliness and effectiveness of the grain.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional grain impurity removal methods rely on manual sorting, which is inefficient and prone to missing detections, making it difficult to efficiently remove large and small particle impurities.
A fully automatic grain impurity remover was designed, comprising a shaking mechanism, a flipping mechanism, and a moving mechanism. It achieves automated impurity removal through multi-stage screening and flipping. The shaking plate, cam, and belt drive mechanism drive the shaking and flipping of the screen disc, combined with the scraper assembly to clean the screen holes, thus realizing multi-stage screening of grain and efficient separation of impurities.
It enables multi-stage screening of grains, efficiently removes large and small particle impurities, improves impurity removal efficiency, reduces manual labor intensity, and reduces the rate of missed detection.
Smart Images
Figure CN224057978U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to grain impurity removal technical field, especially in kind full -automatic grain impurity removal appearance. BACKGROUND
[0002] In the process of grain harvesting and storage, other impurities (such as stone, metal scrap, moldy particles or other crop seeds) can be mixed. Impurities in grain can cause food safety risks, harm the health of consumers, and even impurities can damage processing equipment and increase enterprise operating costs.
[0003] Traditional grain removes large particle stones and small particle impurities mainly by separating impurities of different particle sizes through sieve hole size and relying on manual inspection and manual separation of impurities. Workers identify impurities such as plastic and large particle stones through a conveyor belt or stationary grain and manually or use simple tools such as tweezers to remove impurities. Although this relies on manual separation of impurities can achieve the purpose of removing impurities, the efficiency is not very high and is easily affected by human factors, so the missed detection rate is relatively high.
[0004] Therefore, it is necessary to develop a kind of full-automatic grain impurity removal instrument to overcome the above technical problems. UTILITY MODEL CONTENT
[0005] The utility model solves the technical problem to provide a kind of full-automatic grain impurity removal appearance, effectively overcome the defects of prior art.
[0006] The technical scheme that the utility model solves above technical problem is as follows:
[0007] A kind of full-automatic grain impurity removal appearance, including machine case and respectively being set in above-mentioned machine case support plate, wobble mechanism, first sieve tray, second sieve tray, first turnover mechanism, second turnover mechanism, moving mechanism, first discharge hopper and second discharge hopper, above-mentioned wobble mechanism is connected with above-mentioned support plate, for driving above-mentioned support plate horizontal shaking, above-mentioned first discharge hopper and second discharge hopper are side by side and are loaded on above-mentioned support plate, above-mentioned first sieve tray is set above-mentioned first discharge hopper, above-mentioned first turnover mechanism is connected above-mentioned first sieve tray, for driving above-mentioned first sieve tray upside-down, above-mentioned second turnover mechanism is connected with above-mentioned second sieve tray, for driving above-mentioned second sieve tray upside-down, above-mentioned moving mechanism is connected with above-mentioned second turnover mechanism, for driving above-mentioned second turnover mechanism with second sieve tray moves to above-mentioned second discharge hopper above, or moves to first sieve tray below, the part of above-mentioned machine case top corresponds above-mentioned first sieve tray above is equipped with feed inlet.
[0008] On the basis of the above technical scheme, the utility model can also be improved as follows.
[0009] Further, the machine case is internally provided with a horizontal partition plate, the partition plate is provided with a first material sliding channel and a second material sliding channel corresponding to the first and second feeding funnels, and the shaking mechanism is mounted on the partition plate.
[0010] Further, the first and second material sliding channels are respectively provided with a foreign matter receiving box and a grain receiving box, and the lower part of the side wall of the machine case is provided with a hole for the foreign matter receiving box and the grain receiving box to enter and exit.
[0011] Further, the shaking mechanism comprises a shaking plate, four sets of cams, and a belt transmission mechanism, the shaking plate is horizontally mounted at the lower end of the support plate, the four sets of cams are respectively arranged at four positions of the lower end of the shaking plate and located at four right angles of a same rectangle, the cams are rotatably mounted on the partition plate through shafts, the shafts penetrate the lower end of the partition plate, short shafts are vertically arranged on the four sets of cams and spaced from the shafts, the short shafts of the cams are rotatably mounted on the shaking plate, and the belt transmission mechanism is in transmission connection with the shafts of the four sets of cams.
[0012] Further, the first overturning mechanism comprises two first support vertical plates, two first rotating shafts, and a first rotating drive device, the two first support vertical plates are parallel and spaced, and are vertically mounted at the upper end of the support plate, the first sieve disc is arranged between the upper ends of the two first support vertical plates, the two first rotating shafts are coaxially arranged at the two sides of the first sieve disc and rotatably mounted on the two first support vertical plates, and the first rotating drive device is mounted on one of the first support vertical plates and in transmission connection with the corresponding first rotating shaft, for driving the first rotating shaft to rotate the first sieve disc.
[0013] Further, the second overturning mechanism comprises two second support vertical plates, two second rotating shafts, and a second rotating drive device, the two second support vertical plates are parallel and spaced, and are slidably mounted at the upper end of the support plate, one of the second support vertical plates is connected with the moving mechanism, the second sieve disc is arranged between the upper ends of the two second support vertical plates, the two second rotating shafts are coaxially arranged at the two sides of the second sieve disc and rotatably mounted on the two second support vertical plates, the second rotating drive device is mounted on one of the second support vertical plates and in transmission connection with the corresponding second rotating shaft, for driving the second rotating shaft to rotate the second sieve disc, the distance between the two second support vertical plates is smaller than the distance between the two first support vertical plates, and the moving mechanism drives the second support vertical plate connected therewith to translate, thereby driving the second sieve disc to translate to below or one side of the first sieve disc.
[0014] Further, the moving mechanism comprises two pulleys, a belt and a driving motor, the two pulleys are rotatably arranged at the two ends of the side edge of the support plate through shafts respectively, the belt is wound around the two pulleys, the driving motor is arranged on the support plate and is in transmission connection with the shaft of one of the pulleys, a connecting block is fixed on the upper layer of the belt, and the connecting block is fixedly connected with the lower end of one of the second support vertical plates.
[0015] Further, the lower ends of the two second support vertical plates are slidably arranged on the two slide rails through sliders respectively.
[0016] Further, the upper end of the support plate is provided with two groups of scraper assemblies through supports respectively, one group of the scraper assemblies is arranged above the first discharging funnel and is used for scraping the bottom of the first sieve plate after turning over, and the other group of the scraper assemblies is arranged above the second discharging funnel and is used for scraping the bottom of the second sieve plate after turning over.
[0017] Further, the scraper assembly comprises a third rotating driving device and a long straight scraper arranged horizontally, the third rotating driving device is arranged at the upper end of the support, one end of the scraper is connected with the driving end of the third rotating driving device, and the first sieve plate and the second sieve plate are both flat-bottomed sieve plates.
[0018] The grain impurity removing device has the advantages that the structure is reasonable, multi-stage screening and impurity removing of grain can be realized, large-particle impurities and small-particle impurities in the grain can be effectively screened out, clean grain can be separated, and the impurity removing efficiency is high. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is an external structure diagram of the full-automatic grain impurity removing device.
[0020] Figure 2 It is a structure schematic diagram of the full-automatic grain impurity removing device without side walls. Figure One ;
[0021] Figure 3 It is a structure schematic diagram of the full-automatic grain impurity removing device without side walls. Figure Two ;
[0022] Figure 4 It is a structure schematic diagram of the full-automatic grain impurity removing device without side walls. Figure Three ;
[0023] Figure 5 It is a structure schematic diagram of the full-automatic grain impurity removing device without side walls. Figure Four .
[0024] The attached diagram lists the components represented by each number as follows:
[0025] 1. Chassis; 2. Support plate; 3. Shaking mechanism; 4. First screen plate; 5. Second screen plate; 6. First tilting mechanism; 7. Second tilting mechanism; 8. Moving mechanism; 9. First feeding hopper; 10. Second feeding hopper; 11. Feed inlet; 12. Partition plate; 21. Slide rail; 31. Shaking plate; 32. Cam; 30. Scraper assembly; 61. First support plate; 62. First rotating shaft; 63. First rotary drive device; 71. Second support plate; 72. Second rotating shaft; 73. Second rotary drive device; 81. Pulley; 82. Belt; 83. Drive motor; 84. Connecting block; 91. First chute; 92. Impurity receiving box; 101. Second chute; 102. Grain receiving box; 301. Third rotary drive device; 302. Scraper. Detailed Implementation
[0026] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0027] Example
[0028] like Figure 1 , 2 As shown in Figures 3, 4, and 5, the fully automatic grain impurity remover of this embodiment includes a housing 1 and a support plate 2, a shaking mechanism 3, a first sieve plate 4, a second sieve plate 5, a first tilting mechanism 6, a second tilting mechanism 7, a moving mechanism 8, a first feeding hopper 9, and a second feeding hopper 10, all respectively disposed in the housing 1. The shaking mechanism 3 is connected to the support plate 2 and is used to drive the support plate 2 to shake horizontally. The first feeding hopper 9 and the second feeding hopper 10 are mounted side by side on the support plate 2. The first sieve plate 4 is disposed in the support plate 1. Above the first feeding hopper 9, the first flipping mechanism 6 is connected to the first screen plate 4 and is used to drive the first screen plate 4 to flip up and down. The second flipping mechanism 7 is connected to the second screen plate 5 and is used to drive the second screen plate 5 to flip up and down. The moving mechanism 8 is connected to the second flipping mechanism 7 and is used to drive the second flipping mechanism 7 to move the second screen plate 5 to above the second feeding hopper 10 or to below the first screen plate 4. The top of the machine box 1 is provided with a feed inlet 11 corresponding to the part above the first screen plate 4.
[0029] The impurity removal process of the fully automatic grain impurity remover in this embodiment is as follows:
[0030] Before screening, the second sieve tray 5 is driven to move below the first sieve tray 4 by the moving mechanism 8, the grain is put into through the feed inlet 11 at the top of the machine box 1, falls into the first sieve tray 4 below, the whole support plate 2 is shaken in the horizontal direction by the shaking mechanism 3, which plays the effect of "vibration", so that the grain particles and small particle impurities in the first sieve tray 4 fall through the sieve holes to the second sieve tray 5, similarly, the second sieve tray 5 is also in the "vibration" state, the small particles in the grain inside fall through the sieve holes to the first discharge hopper 9 below, fall and collect through the hopper at the bottom of the first discharge hopper 9, after screening is completed, the moving mechanism 8 drives the second sieve tray 5 to move above the second discharge hopper 10, the first turnover mechanism 6 and the second turnover mechanism 7 respectively overturn the first sieve tray 4 and the second sieve tray 5 by 180°, the large particle impurities in the first sieve tray 4 fall and collect through the first discharge hopper 9, the grain particles in the second sieve tray 5 fall into the second discharge hopper 10, and fall and collect through the hopper at the bottom of the second discharge hopper 10. The overall structure design is reasonable, the whole machine realizes screening, can realize multi-stage screening and impurity removal of grain, so as to effectively screen out large particle impurities and small particle impurities in the grain, separate clean grain, and has high impurity removal efficiency.
[0031] In the embodiment, the first sieve tray 4 and the second sieve tray 5 are both slot type discs with the upper end open in normal state, the bottom walls of both are uniformly covered with a plurality of sieve holes, and the size of the sieve holes on the first sieve tray 4 is larger than that of the sieve holes on the second sieve tray 5.
[0032] In the embodiment, the machine box 1 is internally provided with a horizontal partition plate 12, the partition plate 12 is provided with a first material sliding channel 91 and a second material sliding channel 101 corresponding to the first discharge hopper 9 and the second discharge hopper 10 respectively, and the shaking mechanism 3 is mounted on the partition plate 12. The partition plate 12 divides the machine box 1 into a screening space above and a material receiving space below, which is reasonable in partition, and is also beneficial to loading of core components.
[0033] In the embodiment, the first material sliding channel 91 and the second material sliding channel 101 are respectively provided with a impurity receiving box 92 and a grain receiving box 102 below, and the lower part of the side wall of the machine box 1 is respectively provided with a hole position (indicated by c in the figure) for the impurity receiving box 92 and the grain receiving box 102 to enter and exit. The impurity receiving box 92 collects large and small particles, and the grain receiving box 102 collects grain particles after impurity removal, which is convenient to operate and also convenient to take out and replace after full collection.
[0034] As a preferred embodiment, the shaking mechanism 3 comprises a shaking plate 31, four sets of cams 32 and a belt transmission mechanism. The shaking plate 31 is horizontally arranged at the lower end of the support plate 2. The four sets of cams 32 are arranged at the four positions of the lower end of the shaking plate 31 and located at the four right angles of the same rectangle. The cams 32 are rotatably arranged with the partition plate 12 through the shafts which penetrate the lower end of the partition plate 12. The short shafts of the cams 32 are vertically arranged and spaced apart from the shafts. The short shafts of the cams 32 are rotatably arranged with the shaking plate 31. The belt transmission mechanism is in transmission connection with the shafts of the four sets of cams 32.
[0035] In the embodiment, the belt transmission mechanism drives the four sets of cams 32 to rotate simultaneously, thereby driving the shaking plate 31 to rotate and shake in a circular manner in the horizontal plane, so as to effectively shake and screen.
[0036] In the embodiment, the belt transmission mechanism comprises a motor, a synchronous belt and a plurality of synchronous pulleys. The synchronous pulleys are arranged at the lower ends of the shafts of the cams 32. The shaft end of the motor is also connected with a synchronous pulley. The plurality of pulleys are surrounded by the synchronous belt. When the motor operates, the plurality of synchronous pulleys can be driven to operate synchronously, thereby realizing the synchronous rotation of the plurality of sets of cams 32, and driving the shaking plate 31 to rotate and shake in the horizontal plane through the cams 32.
[0037] As a preferred embodiment, the first overturning mechanism 6 comprises two first support vertical plates 61, two first rotating shafts 62 and a first rotating driving device 63. The two first support vertical plates 61 are parallel and spaced apart and vertically arranged at the upper end of the support plate 2. The first sieve plate 4 is arranged between the upper ends of the two first support vertical plates 61. The two first rotating shafts 62 are coaxially arranged at the two sides of the first sieve plate 4 and rotatably arranged with the two first support vertical plates 61. The first rotating driving device 63 is arranged on one of the first support vertical plates 61 and in transmission connection with the corresponding first rotating shaft 62, so as to drive the first rotating shaft 62 to rotate and drive the first sieve plate 4 to rotate.
[0038] In the embodiment, the first rotating driving device 63 is a motor which drives the first rotating shaft 62 connected therewith to rotate, thereby realizing the 360° rotation of the first sieve plate 4 (in the embodiment, only 180° reciprocating overturning is needed). The design is very ingenious.
[0039] As a preferred implementation, the second overturning mechanism 7 comprises two second support vertical plates 71, two second rotating shafts 72 and a second rotating driving device 73. The two second support vertical plates 71 are parallel and spaced apart, and are respectively slidably arranged on the upper end of the support plate 2. One of the second support vertical plates 71 is connected with the moving mechanism 8. The second screen disc 5 is arranged between the upper ends of the two second support vertical plates 71. The two second rotating shafts 72 are coaxially arranged on the two sides of the second screen disc 5 and are respectively rotatably connected with the two second support vertical plates 71. The second rotating driving device 73 is arranged on one of the second support vertical plates 71 and is in transmission connection with the corresponding second rotating shaft 72, so as to drive the second rotating shaft 72 to rotate and drive the second screen disc 5 to rotate. The distance between the two second support vertical plates 71 is smaller than the distance between the two first support vertical plates 61. The moving mechanism 8 is used to drive the second support vertical plate 71 connected therewith to translate, so as to drive the second screen disc 5 to translate to the lower side of the first screen disc 4.
[0040] In the above embodiment, the second rotating driving device 73 adopts a motor to drive the second rotating shaft 72 connected therewith to rotate, so as to realize the 360° rotation of the second screen disc 5 (in this embodiment, only 180° reciprocating overturning is required). The design is relatively ingenious. It should be noted that, during the sliding of the two second support vertical plates 71, the two second support vertical plates 71 will finally slide to the inner side of the two first support vertical plates 61 or slide to the outside of the two first support vertical plates 61. Therefore, the sliding track of the first support vertical plate 61 will not conflict with the position of the second support vertical plate 71, and the different distances realize the position avoidance.
[0041] As a preferred implementation, the moving mechanism 8 comprises two pulleys 81, a belt 82 and a driving motor 83. The two pulleys 81 are rotatably arranged at the two ends of one side edge of the support plate 2 through shafts. The belt 82 is arranged around the two pulleys 81. The driving motor 83 is arranged on the support plate 2 and is in transmission connection with the shaft of one of the pulleys 81. The upper layer of the belt 82 is fixed with a connecting block 84. The connecting block 84 is fixedly connected with the lower end of one of the second support vertical plates 71.
[0042] In the above embodiment, when the driving motor 83 drives one of the pulleys 81 to rotate, the belt 82 can be driven to move in a ring shape. Through the connecting block 84, the second support vertical plate 71 connected therewith can be driven to slide along a specific track. The whole structure is simple in design and stable in operation.
[0043] Of course, the moving mechanism 8 can also adopt a screw transmission pair or a linear motion module or other existing products.
[0044] In the embodiment, two parallel slide rails 21 are arranged on the upper end of the support plate 2, and the lower ends of the two second support vertical plates 71 are respectively slidably connected to the two slide rails 21 through the corresponding slide blocks. The cooperation between the slide rails 21 and the slide blocks makes the displacement of the support plate 2 more accurate and stable, and the support plate 2 will not deviate or shake.
[0045] As a preferred embodiment, two groups of scraper assemblies 30 are respectively arranged on the upper end of the support plate 2 through supports. One group of the scraper assemblies 30 is arranged above the first discharge funnel 9 and is used to scrape the bottom of the first sieve plate 4 after the first sieve plate 4 is turned over, and the other group of the scraper assemblies 30 is arranged above the second discharge funnel 10 and is used to scrape the bottom of the second sieve plate 5 after the second sieve plate 5 is turned over.
[0046] In the embodiment, when the first sieve plate 4 and the second sieve plate 5 are turned over to have the bottom faces upward, the scraper assemblies 30 can scrape the bottom faces, so that the grains or impurities embedded in the sieve holes of the first sieve plate 4 or the second sieve plate 5 fall off, and the sieve holes are not blocked to affect the next screening operation.
[0047] As a preferred embodiment, the scraper assembly 30 includes a third rotary driving device 301 and a long straight scraper 302 arranged horizontally. The third rotary driving device 301 is arranged on the upper end of the support, one end of the scraper 302 is connected to the driving end of the third rotary driving device 301, and the first sieve plate 4 and the second sieve plate 5 are both flat-bottomed sieve plates.
[0048] In the embodiment, after the first sieve plate 4 or the second sieve plate 5 is turned over to have the bottom face upward, the height of the bottom face of the first sieve plate 4 or the second sieve plate 5 is consistent with the height of the lower end face of the corresponding scraper 302. Therefore, when the third rotary driving device 301 drives the scraper 302 to rotate, the scraper 302 can “sweep” the bottom face of the corresponding sieve plate, so that the grains embedded in the sieve holes and protruding from the sieve holes fall off. This design is very ingenious and is beneficial to the aftercare work of the sieve plate after screening and ensures the effective performance of the next screening work.
[0049] It should be emphasized that in the embodiment, a door is arranged on the side wall of the cabinet 1, and the door is opened to facilitate the maintenance and repair of the internal components. In addition, a control host with a display screen (indicated by a in the figure) is arranged on the outer surface of the cabinet 1. The control host is connected to the electrical components in the full-automatic grain impurity removing device and is externally connected to a power supply. The control host can realize the intelligent control operation of the internal electrical components, so that the full-automatic grain impurity removing device can realize the full-automatic and intelligent operation.
[0050] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0051] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0052] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0053] In the utility model, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is lower than that of the second feature.
[0054] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like 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 application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.
[0055] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.
Claims
1. A fully automatic grain impurity removal instrument, characterized in that: The application relates to a machine case (1) and a support plate (2), a shaking mechanism (3), a first sieve plate (4), a second sieve plate (5), a first turnover mechanism (6), a second turnover mechanism (7), a moving mechanism (8), a first feeding hopper (9) and a second feeding hopper (10) arranged in the machine case (1) respectively, the shaking mechanism (3) is connected with the support plate (2) and is used for driving the support plate (2) to shake horizontally, the first feeding hopper (9) and the second feeding hopper (10) are arranged side by side on the support plate (2), the first sieve plate (4) is arranged above the first feeding hopper (9), the first turnover mechanism (6) is connected with the first sieve plate (4) and is used for driving the first sieve plate (4) to turn over, the second turnover mechanism (7) is connected with the second sieve plate (5) and is used for driving the second sieve plate (5) to turn over, the moving mechanism (8) is connected with the second turnover mechanism (7) and is used for driving the second turnover mechanism (7) to drive the second sieve plate (5) to move above the second feeding hopper (10) or below the first sieve plate (4), and a feeding port (11) is arranged on the top of the machine case (1) and corresponds to the position above the first sieve plate (4).
2. The full-automatic grain impurity removing instrument according to claim 1, characterized in that: A horizontal partition plate (12) is arranged in the machine case (1), the partition plate (12) is provided with a first material sliding channel (91) and a second material sliding channel (101) penetrating the partition plate (12) and corresponding to the first feeding hopper (9) and the second feeding hopper (10) respectively, and the shaking mechanism (3) is arranged on the partition plate (12).
3. The full-automatic grain impurity removing instrument according to claim 2, characterized in that: Corresponding to the first material sliding channel (91) and the second material sliding channel (101), a foreign matter receiving box (92) and a grain receiving box (102) are arranged below the first material sliding channel (91) and the second material sliding channel (101) respectively, and the lower part of the side wall of the machine case (1) is provided with hole positions for the foreign matter receiving box (92) and the grain receiving box (102) to enter and exit.
4. The full-automatic grain impurity removing instrument according to claim 2, characterized in that: The shaking mechanism (3) comprises a shaking plate (31), four groups of cams (32) and a belt transmission mechanism, the shaking plate (31) is horizontally arranged at the lower end of the support plate (2), four groups of the cams (32) are arranged at four positions of the lower end of the shaking plate (31) and are located at four right angles of a same rectangle, the cams (32) are rotatably arranged on the partition plate (12) through shafts, the shafts penetrate the lower end of the partition plate (12), short shafts are vertically arranged on the four groups of the cams (32) and are spaced apart from the shafts respectively, the short shafts of the cams (32) are rotatably arranged on the shaking plate (31), and the belt transmission mechanism is in transmission connection with the shafts of the four groups of the cams (32).
5. The full-automatic grain impurity removing instrument according to claim 1, characterized in that: The first turnover mechanism (6) comprises two first support vertical plates (61), two first rotating shafts (62) and a first rotating driving device (63), the two first support vertical plates (61) are distributed in parallel and at intervals, and are vertically arranged on the upper end of the support plate (2), the first sieve plate (4) is arranged between the upper ends of the two first support vertical plates (61), the two first rotating shafts (62) are coaxially arranged on the two sides of the first sieve plate (4) respectively, and are rotationally assembled with the two first support vertical plates (61) respectively, and the first rotating driving device (63) is arranged on one of the first support vertical plates (61) and is in transmission connection with the corresponding first rotating shaft (62), and is used for driving the first rotating shaft (62) to rotate the first sieve plate (4).
6. The fully automatic grain impurity removing instrument according to claim 5, characterized in that: The second turnover mechanism (7) comprises two second support vertical plates (71), two second rotating shafts (72) and a second rotating driving device (73), the two second support vertical plates (71) are distributed in parallel and at intervals, the two second support vertical plates (71) are slidingly arranged on the upper end of the support plate (2) respectively, one of the second support vertical plates (71) is connected with the moving mechanism (8), the second sieve plate (5) is arranged between the upper ends of the two second support vertical plates (71), the two second rotating shafts (72) are coaxially arranged on the two sides of the second sieve plate (5) respectively, and are rotationally assembled with the two second support vertical plates (71) respectively, the second rotating driving device (73) is arranged on one of the second support vertical plates (71) and is in transmission connection with the corresponding second rotating shaft (72), and is used for driving the second rotating shaft (72) to rotate the second sieve plate (5), the distance between the two second support vertical plates (71) is less than the distance between the two first support vertical plates (61), and the moving mechanism (8) is used for driving the second support vertical plate (71) connected with the moving mechanism (8) to translate, so that the second sieve plate (5) is translated to below or one side of the first sieve plate (4).
7. The fully automatic grain impurity removing instrument according to claim 6, characterized in that: The moving mechanism (8) comprises two pulleys (81), a belt (82) and a driving motor (83), the two pulleys (81) are rotationally assembled on the two ends of the side edge of the support plate (2) respectively, the belt (82) surrounds the two pulleys (81), the driving motor (83) is arranged on the support plate (2) and is in transmission connection with the shaft of one of the pulleys (81), and the upper layer of the belt body of the belt (82) is fixedly connected with a connecting block (84), and the connecting block (84) is connected and fixed with the lower end of one of the second support vertical plates (71).
8. The fully automatic grain impurity removing instrument according to claim 6, characterized in that: The upper end of the support plate (2) is provided with two slide rails (21) in parallel and at intervals, and the lower ends of the two second support vertical plates (71) are slidingly arranged on the two slide rails (21) in a one-to-one correspondence respectively.
9. The fully automatic grain impurity removing instrument according to any one of claims 1 to 8, characterized in that: The upper end of the support plate (2) is respectively provided with two groups of scraper assemblies (30) through supports, one group of the scraper assemblies (30) is arranged above the first blanking funnel (9) for scraping the bottom of the first sieve tray (4) after turning over, and the other group of the scraper assemblies (30) is arranged above the second blanking funnel (10) for scraping the bottom of the second sieve tray (5) after turning over.
10. The fully automatic grain impurity removing instrument according to claim 9, characterized in that: The scraper assembly (30) comprises third rotary driving devices (301) and long straight scrapers (302) arranged horizontally, the third rotary driving devices (301) are arranged on the upper end of the supports, one end of the scraper (302) is connected with the driving end of the third rotary driving device (301), and the first sieve tray (4) and the second sieve tray (5) are both flat-bottomed sieve trays.