Grain seed winnowing and impurity removing device

Abstract

The invention relates to a grain seed winnowing and impurity removing device and belongs to the technical field of seed screening. The grain seed winnowing and impurity removing device comprises a negative pressure mechanism, a suction mechanism, a filtering mechanism, an intermittent sealing mechanism, a driving mechanism and a sorting mechanism. The suction mechanism comprises a first winnowing cylinder arranged at the lower end of the negative pressure mechanism, a second winnowing cylinder arranged on the first winnowing cylinder, a plurality of discharging covers arranged on the first winnowing cylinder and the second winnowing cylinder correspondingly, and discharging pipes arranged on the discharging covers. The first winnowing cylinder and the second winnowing cylinder are each provided with a discharging opening communicating with the discharging cover. The filtering mechanism is arranged on the first winnowing barrel, and the output end faces the discharging cover. The intermittent sealing mechanism is rotationally arranged in the discharging cover and is in sealing connection with the discharging opening; the driving mechanism is arranged on the intermittent sealing mechanism and is magnetically connected with the filtering mechanism; the sorting mechanism is arranged on the second winnowing cylinder in a sliding mode. The seed screening device is detachable, small in structure and capable of conducting classified screening on seeds and achieving continuous screening.

Description

Technical Field

[0001] The invention relates to the technical field of seed screening, and in particular to a grain seed winnowing and impurity removal device. Background Art

[0002] Seed impurity removal and screening is an important process, the purpose of which is to improve the quality of seeds and ensure the yield and quality after planting. Impurities that may exist in seeds include: stones, dust, seed shells, straw, leaves, insects, mold, etc. These impurities may be mixed in during the collection, processing and storage of seeds, affecting the purity and quality of seeds; there are two main ways to remove impurities from seeds: air selection and screen screening. In existing technologies, grain cleaning vehicles all use vertical air selection devices for impurity suction.

[0003] Only a small amount of seeds need to be used in the experiment. However, the grain winnowing and impurity removal device in the prior art is only suitable for a large amount of seeds. Its structure is bulky and is not suitable for use in small places such as laboratories or a small amount of seeds. Summary of the invention

[0004] The purpose of the present invention is to address the problems existing in the background technology and to propose a grain seed winnowing and impurity removal device which is detachable, has a compact structure, can classify and screen seeds, and can realize continuous screening.

[0005] The technical solution of the present invention is: a grain seed winnowing and impurity removal device, comprising: Negative pressure mechanism; The suction mechanism comprises a first air separation cylinder arranged at the lower end of the negative pressure mechanism, a second air separation cylinder arranged on the first air separation cylinder, a plurality of material discharge covers respectively arranged on the first air separation cylinder and the second air separation cylinder, and a material discharge pipe arranged on the material discharge cover; the first air separation cylinder and the second air separation cylinder are both provided with a discharge port connected with the material discharge cover; A filtering mechanism, which is arranged on the wind selection cylinder 1 and has an output end facing the lower material cover; An intermittent sealing mechanism, rotatably disposed in the material discharge cover and sealedly connected to the material discharge port; A driving mechanism, disposed on the intermittent sealing mechanism and magnetically connected to the filtering mechanism; The sorting mechanism is slidably arranged on the second wind sorting cylinder.

[0006] Preferably, the negative pressure mechanism comprises a negative pressure device, a dust collecting cylinder arranged on the negative pressure device, a valve arranged on the dust collecting cylinder, and a connecting pipe arranged on the valve and connected to the air separation cylinder.

[0007] Preferably, the filtering mechanism includes a filter plate arranged in the air separation barrel, a blade rotatably arranged in the air separation barrel, a rotating shaft rotatably arranged in the air separation barrel and arranged on the blade, and a scraper frame arranged on the rotating shaft and slidably connected to the filter plate.

[0008] Preferably, the scraper frame includes a bottom plate symmetrically arranged on the rotating shaft and distributed obliquely, two low side plates staggered on one side of the two bottom plates, and two high side plates staggered on the other side of the two bottom plates.

[0009] Preferably, the intermittent sealing mechanism includes a rotating ring 1 rotatably arranged in the discharge cover, a plurality of sealing sheets arranged on the rotating ring 1, and a rotating ring 2 arranged at the lower end of the sealing sheet; the plurality of sealing sheets are evenly distributed in a circular shape, and the spacing between two sealing sheets is greater than the opening width of the discharge port.

[0010] Preferably, the driving mechanism includes a plurality of mounting plates arranged on the rotating ring 1, a plurality of magnets 1 arranged on the mounting plate, mounting blocks arranged on the lower side plate and the higher side plate, and a magnet 2 arranged on the mounting block and magnetically connected to the magnet 1.

[0011] Preferably, the sorting mechanism includes a mounting rod slidably arranged on the rotating shaft, a conical cylinder 2 arranged on the mounting rod and rotatably arranged in the air separation cylinder 2, a connecting plate arranged on the conical cylinder 2, a conical cylinder 1 arranged on the connecting plate and rotatably arranged in the air separation cylinder 2, and an elastic member 1 arranged on the rotating shaft and abutting against the mounting rod; the lower ends of the conical cylinder 1 and the conical cylinder 2 are respectively facing the unloading cover.

[0012] Preferably, two supporting mechanisms are provided at the lower part of the second air separation cylinder, and a pushing assembly is provided on the supporting mechanism; the supporting mechanism includes a mounting frame provided on the second air separation cylinder, two rotating arms 1 that are rotatably provided on the mounting frame, two rotating arms 2 that are rotatably provided on the rotating arm 1, and two spherical pulleys that are respectively provided on the rotating arms 2.

[0013] Preferably, the pushing assembly includes a mounting platform arranged on the mounting frame, a sliding rod arranged on the mounting platform, a sliding block slidably arranged on the sliding rod, an elastic member 2 arranged on the sliding rod and abutting against the upper part of the sliding block, and two connecting rods whose two ends are respectively rotatably connected to the sliding block and the rotating arm 1.

[0014] Preferably, the negative pressure device, the dust collecting tube, the valve, and the connecting pipe are all detachably connected and are interference fit; a convex tube is provided in the dust collecting tube, and one end of the valve is embedded in the convex tube.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: In the present invention, the negative pressure device is started and the valve is opened, so that negative pressure air can enter the air separation cylinder 1, so that the air separation cylinder 1 generates suction, so that the lower material cover can suck up the seeds, and the seeds will be screened by the sorting mechanism according to the fullness of the seeds. The full seeds fall into the lower layer of the sorting mechanism, and the relatively unfull seeds fall into the upper layer of the sorting mechanism, and the empty shells or impurities will be directly adsorbed to the filtering mechanism. When the filtering mechanism rotates, the seeds will be swept into the corresponding lower material cover respectively, and the seeds will be pushed to move by the intermittent sealing mechanism, so that the intermittent sealing mechanism moves to the lower material pipe and falls, and thus the seeds in three states can be continuously screened, the seeds can be quickly air-selected, and can be screened according to the fullness of the seeds, that is, the weight. Adjusting the opening size of the valve can adjust the flow rate and flow of the negative pressure, so that it can be adjusted according to the quality of the seeds, so that the negative pressure can suck up the seeds, and the seeds fall into the sorting mechanism for screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 It is a structural explosion diagram of an embodiment of the present invention; Figure 3 It is a structural cross-sectional view of an embodiment of the present invention; Figure 4 It is a schematic diagram of the local structure of an embodiment of the present invention; Figure 5 for Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0018] Figure 6 It is a schematic diagram of the structure of an embodiment of the present invention; Figure 7 It is a structural schematic diagram of a sorting mechanism in an embodiment of the present invention; Figure 8 It is a structural schematic diagram of the support mechanism in the embodiment of the present invention; Figure numerals: 1. negative pressure mechanism; 101. negative pressure device; 102. dust collecting cylinder; 1021. convex pipe; 103. valve; 104. connecting pipe; 2. suction mechanism; 201. air separation cylinder 1; 202. air separation cylinder 2; 203. material discharge cover; 204. material discharge pipe; 2021. material discharge port; 3. filtering mechanism; 301. filter plate; 302. blade; 303. scraper frame; 304. rotating shaft; 3031. bottom plate; 3032. low side plate; 3033. high side plate; 4. intermittent sealing mechanism; 401. rotating ring 1; 402. sealing Plate; 403, rotating ring 2; 5, driving mechanism; 501, mounting plate; 502, magnet 1; 503, mounting block; 504, magnet 2; 6, sorting mechanism; 601, conical cylinder 1; 602, connecting plate; 603, conical cylinder 2; 604, mounting rod; 605, elastic member 1; 7, supporting mechanism; 701, mounting frame; 702, rotating arm 1; 703, rotating arm 2; 704, spherical pulley; 8, pushing assembly; 801, mounting table; 802, sliding rod; 803, sliding block; 804, elastic member 2; 805, connecting rod. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] Embodiment 1 like Figure 1-8As shown, a grain seed wind separation and impurity removal device proposed by the present invention comprises a negative pressure mechanism 1, a suction mechanism 2, a filtering mechanism 3, an intermittent sealing mechanism 4, a driving mechanism 5 and a sorting mechanism 6; The suction mechanism 2 includes an air separation cylinder 201 arranged at the lower end of the negative pressure mechanism 1, an air separation cylinder 202 arranged on the air separation cylinder 201, a plurality of discharge covers 203 respectively arranged on the air separation cylinder 201 and the air separation cylinder 202, and a discharge pipe 204 arranged on the discharge cover 203; both the air separation cylinder 201 and the air separation cylinder 202 are provided with a discharge port 2021 connected to the discharge cover 203; the filtering mechanism 3 is arranged on the air separation cylinder 201 and the output end faces the discharge cover 203; the intermittent sealing mechanism 4 is rotatably arranged in the discharge cover 203 and is sealed and connected to the discharge port 2021; the driving mechanism 5 is arranged on the intermittent sealing mechanism 4 and is magnetically connected to the filtering mechanism 3; the sorting mechanism 6 is slidably arranged on the air separation cylinder 202.

[0024] The negative pressure mechanism 1 comprises a negative pressure device 101, a dust collecting tube 102 arranged on the negative pressure device 101, a valve 103 arranged on the dust collecting tube 102, and a connecting pipe 104 arranged on the valve 103 and connected to the air separation tube 201. The negative pressure device 101, the dust collecting tube 102, the valve 103, and the connecting pipe 104 are all detachably connected and are interference fit; a convex tube 1021 is arranged in the dust collecting tube 102, and one end of the valve 103 is embedded in the convex tube 1021; the convex tube 1021 can be relatively directly inserted through interference fit, and can be quickly connected by plugging and unplugging, and the convex tube 1021 protrudes into the dust collecting tube 102, so that after the negative pressure device 101 stops working, dust and impurity particles can fall around the convex tube 1021, and are not easy to fall directly into the valve 103, thereby preventing dust from falling back into the suction mechanism 2.

[0025] In this embodiment, the negative pressure device 101 is started and the valve 103 is opened, so that the negative pressure air can enter the air separation cylinder 201, so that the air separation cylinder 201 generates suction, so that the lower cover 203 can suck up the seeds, and the seeds will be screened by the sorting mechanism 6 according to the fullness of the seeds. The full seeds will fall into the lower layer of the sorting mechanism 6, and the relatively unfull seeds will fall into the upper layer of the sorting mechanism 6. The empty shells or impurities will be directly adsorbed to the filtering mechanism 3. When the filtering mechanism 3 rotates, the seeds will be swept into the corresponding In the discharge cover 203, the seeds are pushed to move by the intermittent sealing mechanism 4, so that the intermittent sealing mechanism 4 pushes the seeds to move to the discharge pipe 204 and fall down, and thereby the seeds in three states can be continuously screened, the seeds can be quickly air-selected, and the seeds can be screened according to their fullness, that is, weight. The opening size of the valve 103 can adjust the flow rate and flow of the negative pressure, so that it can be adjusted according to the quality of the seeds, so that the negative pressure can suck up the seeds, and the seeds fall onto the sorting mechanism 6 for screening.

[0026] The invention has a compact structure and is suitable for use in a small amount of wind selection environment. It is more suitable for seed breeding sites such as laboratories and can realize continuous screening operations.

[0027] Embodiment 2 like Figure 1-8 As shown, a grain seed air separation and impurity removal device proposed by the present invention, compared with the first embodiment, the filtering mechanism 3 in this embodiment includes a filter plate 301 arranged in an air separation cylinder 201, a blade 302 rotatably arranged in the air separation cylinder 201, a rotating shaft 304 rotatably arranged in the air separation cylinder 201 and arranged on the blade 302, and a scraper frame 303 arranged on the rotating shaft 304 and slidably connected to the filter plate 301.

[0028] The scraper frame 303 includes a bottom plate 3031 symmetrically arranged on the rotating shaft 304 and tilted, two side plates 3032 are staggered on one side of the two bottom plates 3031, and two side plates 3033 are staggered on the other side of the two bottom plates 3031; the bottom plate 3031 is tilted to guide the scraped empty shell seeds or impurities so that the empty shell seeds can fall into the discharge cover 203. When the scraper frame 303 rotates, the side plates 3033 move toward the side plates 3032. The side plates 3032 leave space for scraping and prevent the scraped empty shell seeds or impurities from falling. The side plates 3033 are slidably connected to the filter plate 301 to guide the empty shell seeds or impurities. The empty shell seeds or impurities adsorbed on the filter plate 301 are scraped off, and since the empty shell seeds or impurities are blocked on the filter plate 301, the negative pressure will be reduced, that is, the negative pressure in the rotation direction of the scraper frame 303 is lower than the area where the scraper frame 303 rotates, and a relatively sealed space can be formed by the bottom plate 3031, the low side plate 3032 and the high side plate 3033, thereby reducing the circulation of negative pressure, so that the negative pressure here is reduced, so that the empty shell seeds or impurities can smoothly fall onto the bottom plate 3031, and when the bottom plate 3031 is aligned with the discharge port 2021, the empty shell seeds or impurities on the bottom plate 3031 will fall into the lower material cover 203 through the discharge port 2021, thereby completing the purpose of cleaning the empty shell seeds or impurities.

[0029] Furthermore, the intermittent sealing mechanism 4 includes a rotating ring 1 401 rotatably arranged in the discharge cover 203, a plurality of sealing sheets 402 arranged on the rotating ring 1 401, and a rotating ring 2 403 arranged at the lower end of the sealing sheet 402; the plurality of sealing sheets 402 are evenly distributed in a circular shape, and the distance between two sealing sheets 402 is greater than the opening width of the discharge port 2021. The driving mechanism 5 includes a plurality of mounting plates 501 arranged on the rotating ring 1 401, a plurality of magnets 1 502 arranged on the mounting plate 501, a mounting block 503 arranged on the lower side plate 3032 and the higher side plate 3033, and a second magnet 504 arranged on the mounting block 503 and magnetically connected to the magnet 1 502.

[0030] In this embodiment, when the negative pressure mechanism 1 generates negative pressure and enters into the air separation cylinder 201, the blade 302 is driven by the negative pressure so that the blade 302 can rotate, and the blade 302 drives the scraper frame 303 to rotate, so that the scraper frame 303 contacts the filter plate 301, thereby being able to sweep away the empty shell seeds or impurities adsorbed by the negative pressure on the filter plate 301, thereby increasing the negative pressure at the position where the scraper frame 303 has moved, and being able to work continuously to prevent the filter plate 301 from being completely blocked, and the swept empty shell seeds or impurities fall into the scraper frame 303, and are then transported to the unloading cover 203 through the scraper frame 303.

[0031] When the scraper frame 303 rotates, it will drive the mounting block 503 to move, the mounting block 503 drives the magnet 2 504 to move, the magnet 2 504 drives the magnet 1 502 to move, the magnet 1 502 drives the mounting plate 501 to move, the mounting plate 501 drives the rotating ring 1 401 to move, the rotating ring 1 401 drives the sealing sheet 402 to move, and the sealing sheet 402 drives the rotating ring 1 401 to move, so that the sealing sheet 402 moves in the discharge cover 203 to form a plurality of relatively sealed spaces, and when moving, it can retreat the empty shell seeds or impurities that fall into the discharge cover 203 to the discharge pipe 204, so that Empty shell seeds or impurities fall from the discharge pipe 204 to achieve the removal of empty shell seeds or impurities. There are multiple discharge ports 2021, and the discharge ports 2021 and the discharge pipe 204 are staggered, and the spacing between the sealing sheets 402 is smaller than the distance between the discharge ports 2021 and the sealing sheets 402, so that the explosion sealing sheets 402 will not be directly connected to the discharge ports 2021, thereby achieving a relatively sealed state inside the air separation cylinder 202 at all times without destroying the air tightness. When the sealing sheet 402 moves to the discharge pipe 204, the seeds fall due to the change in sealing and fall from the discharge pipe 204.

[0032] Smaller dust particles will directly pass through the filter plate 301 and enter the dust collecting tube 102, where they will be collected. This will allow full seeds, underfilled seeds, empty seeds and small particles of impurities to be screened, making it easier to remove empty seeds and impurities.

[0033] Embodiment 3 like Figure 1-8As shown, a grain seed air separation and impurity removal device proposed by the present invention, compared with the first or second embodiment, the sorting mechanism 6 in this embodiment includes a mounting rod 604 slidably arranged on the rotating shaft 304, a conical barrel 603 arranged on the mounting rod 604 and rotatably arranged in the second air separation barrel 202, a connecting plate 602 arranged on the second conical barrel 603, a conical barrel 1 601 arranged on the connecting plate 602 and rotatably arranged in the second air separation barrel 202, and an elastic member 1 605 arranged on the rotating shaft 304 and abutting against the mounting rod 604; the lower ends of the conical barrel 1 601 and the conical barrel 2 603 are respectively facing the lower material cover 203; the elastic member 1 605 pushes the mounting rod 604 to move upward, so that the mounting rod 604 The mounting rod 604 is against the circular baffle of the rotating shaft 304, so that the mounting rod 604 can be positioned. When it is necessary to clean the conical cylinder 1 601 and the conical cylinder 2 602, the conical cylinder 1 601 is directly pulled downward, and the conical cylinder 1 601 and the conical cylinder 2 602 can be directly pulled down from the discharge cover 203, which can prevent residual seeds and clean the conical cylinder 1 601 and the conical cylinder 2 602. After cleaning, the conical cylinder 1 601 is released, and the mounting rod 604 is pushed upward by the elastic member 605 to reset the conical cylinder 1 601 and the conical cylinder 2 602; one side of the rotating shaft 304 is a square structure, so that the mounting rod 604 can only slide with the rotating shaft 304 and cannot rotate.

[0034] In this embodiment, through the conical structure of conical cylinder 1 601 and conical cylinder 2 603, the negative pressure is reduced after entering the top of conical cylinder 1 601, causing full seeds, that is, heavier seeds, to fall onto conical cylinder 1 601, and when the rotating shaft 304 rotates, it will drive the mounting rod 604 to rotate, the mounting rod 604 will drive conical cylinder 2 603 to rotate, conical cylinder 2 603 will drive the connecting plate 602 to rotate, and the connecting plate 602 will drive conical cylinder 1 601 to rotate, so that the seeds falling on conical cylinder 1 601 will move to the discharge port 2021, and can fall into the lower material cover 203 through the discharge port 2021.

[0035] The relatively unfull seeds, that is, the seeds with lighter mass, will continue to move upwards. After passing through the second conical cylinder 603, negative pressure will be reduced so that the relatively unfull seeds fall to the top of the second conical cylinder 603, and then are guided by the second conical cylinder 603 to fall into the lower material cover 203.

[0036] Lighter seeds such as empty shells or other impurities will continue to move upward until they move to the filter plate 301. At this time, due to the negative pressure, the impurities will be adsorbed on the filter plate 301 and will block the filter plate 301, causing the negative pressure to decrease. The rotation of the scraper frame 303 can scrape off the seeds blocked on the filter plate 301. Since there are blocked seeds in the moving direction, the negative pressure in the moving direction is small. After the seeds are scraped off after the movement, the negative pressure is large, so the seeds scraped off by the scraper frame 303 can fall into the scraper frame 303, and then be transported to the lower material cover 203 by the scraper frame 303, thereby transporting the empty shell seeds or impurities into the lower material cover 203.

[0037] The seeds can be screened separately by using conical cylinder 1 601 and conical cylinder 2 603. The full seeds are screened to the bottom material cover 203, while the relatively unfull seeds fall into the middle material cover 203, and the empty shells and impurities fall into the top material cover 203, thereby screening the seeds. The screened seeds fall from the material tube 204, and a cloth bag or a collection box can be hung on the material tube 204 to collect the screened seeds.

[0038] Embodiment 4 like Figure 1-8 As shown, a grain seed air separation and impurity removal device proposed by the present invention, compared with embodiment one or embodiment two or embodiment three, in this embodiment, two supporting mechanisms 7 are provided at the lower part of the air separation cylinder 202, and a pushing assembly 8 is provided on the supporting mechanism 7; the supporting mechanism 7 includes a mounting frame 701 arranged on the air separation cylinder 202, two rotating arms 702 are provided and both are rotatably arranged on the mounting frame 701, two rotating arms 703 are provided and are rotatably arranged on the rotating arms 1 702, and two spherical pulleys 704 are provided respectively on the rotating arms 703.

[0039] Furthermore, the pushing component 8 includes a mounting platform 801 arranged on the mounting frame 701, a sliding rod 802 arranged on the mounting platform 801, a sliding block 803 slidably arranged on the sliding rod 802, an elastic member 804 arranged on the sliding rod 802 and abutting against the upper part of the sliding block 803, and two connecting rods 805 are provided, and the two ends of the connecting rods 805 are respectively connected to the sliding block 803 and the rotating arm 702 for rotation. The pushing component 8 is used to provide a force for resetting the supporting mechanism 7, so that the supporting mechanism 7 can support the suction mechanism 2.

[0040] When the present embodiment is not in use, the rotating arm 2 703 is rotated so that the rotating arm 2 703 is rotated and stored in the mounting frame 701. The mounting frame 701 is in a T-shaped structure, leaving space for storing the spherical pulley 704, so that when the whole is disassembled, the occupied space can be reduced, and it is convenient to carry, transport and store.

[0041] When in use, the second rotating arm 703 is swung to rotate the second rotating arm 703, thereby driving the spherical pulley 704 to move. When the second rotating arm 703 rotates to the maximum position, it is stuck on the first rotating arm 702, so that the second rotating arm 703 and the first rotating arm 702 form a whole relative to each other, and because the force is downward, the second rotating arm 703 will not fold back into the first rotating arm 702, so that it can achieve stable movement.

[0042] The slide bar 802 supports the slide block 803, and the elastic member 804 pushes the slide block 803 to move downward. The slide block 803 drives the connecting rod 805 to move downward, thereby driving the rotating arm 702 to close, so that the spherical pulley 704 moves in a direction away from the wind separation cylinder 202, thereby increasing the distance from the lower end of the wind separation cylinder 202 to the ground. When pressed downward, the slide block 803 can be compressed, so that the distance from the ground of the wind separation cylinder 202 is shortened, and the elastic force of the elastic member 804 is used to Support, and the spherical pulley 704 can reduce the friction, so as to realize relatively easy control of the distance of the air separation cylinder 202 from the ground. When a strong suction force is needed, the negative pressure mechanism 1 is pressed down hard, and when a small suction force is needed, the negative pressure mechanism 1 is pressed down lightly. Compared with manual hand-held control of the distance from the ground, it can avoid the problem that the distance from the ground is too large, resulting in the inability to suck up grain seeds, and the distance from the ground is too small and the seeds cannot be continuously sucked. It can be used conveniently and can be folded and stored when not in use, without taking up space.

[0043] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A grain seed winnowing and impurity removal device, characterized in that: include, Negative pressure mechanism (1); The suction mechanism (2) comprises a first air separation cylinder (201) arranged at the lower end of the negative pressure mechanism (1), a second air separation cylinder (202) arranged on the first air separation cylinder (201), a plurality of material discharge covers (203) respectively arranged on the first air separation cylinder (201) and the second air separation cylinder (202), and a material discharge pipe (204) arranged on the material discharge cover (203); the first air separation cylinder (201) and the second air separation cylinder (202) are both provided with a material discharge port (2021) connected to the material discharge cover (203); A filtering mechanism (3) is arranged on the first air separation cylinder (201) and has an output end facing the lower material cover (203); An intermittent sealing mechanism (4) rotatably disposed in the discharge cover (203) and sealedly connected to the discharge port (2021); A driving mechanism (5) disposed on the intermittent sealing mechanism (4) and magnetically connected to the filtering mechanism (3); The sorting mechanism (6) is slidably arranged on the second wind sorting cylinder (202).

2. A grain seed winnowing and impurity removal device according to claim 1, characterized in that: The negative pressure mechanism (1) comprises a negative pressure device (101), a dust collecting cylinder (102) arranged on the negative pressure device (101), a valve (103) arranged on the dust collecting cylinder (102), and a connecting pipe (104) arranged on the valve (103) and connected to the first air separation cylinder (201).

3. A grain seed winnowing and impurity removal device according to claim 2, characterized in that: The filtering mechanism (3) comprises a filter plate (301) arranged in the first air separation cylinder (201), a blade (302) rotatably arranged in the first air separation cylinder (201), a rotating shaft (304) rotatably arranged in the first air separation cylinder (201) and arranged on the blade (302), and a scraper frame (303) arranged on the rotating shaft (304) and slidably connected to the filter plate (301).

4. The grain seed winnowing and impurity removal device according to claim 3, characterized in that: The scraper frame (303) comprises a bottom plate (3031) symmetrically arranged on the rotating shaft (304) and distributed obliquely, two low side plates (3032) arranged and staggered on one side of the two bottom plates (3031), and two high side plates (3033) arranged and staggered on the other side of the two bottom plates (3031).

5. The grain seed winnowing and impurity removal device according to claim 4, characterized in that: The intermittent sealing mechanism (4) comprises a rotating ring (401) rotatably arranged in the discharge cover (203), a plurality of sealing sheets (402) arranged on the rotating ring (401), and a rotating ring (403) arranged at the lower end of the sealing sheet (402); the plurality of sealing sheets (402) are evenly distributed in a circular shape, and the distance between two sealing sheets (402) is greater than the opening width of the discharge port (2021).

6. The grain seed winnowing and impurity removal device according to claim 5, characterized in that: The driving mechanism (5) comprises a plurality of mounting plates (501) disposed on the rotating ring (401), a plurality of magnets (502) disposed on the mounting plate (501), a mounting block (503) disposed on the lower side plate (3032) and the upper side plate (3033), and a second magnet (504) disposed on the mounting block (503) and magnetically connected to the first magnet (502).

7. The grain seed winnowing and impurity removal device according to claim 6, characterized in that: The sorting mechanism (6) comprises a mounting rod (604) slidably arranged on the rotating shaft (304), a conical tube (603) arranged on the mounting rod (604) and rotatably arranged in the second air separation tube (202), a connecting plate (602) arranged on the second conical tube (603), a conical tube (601) arranged on the connecting plate (602) and rotatably arranged in the second air separation tube (202), and an elastic member (605) arranged on the rotating shaft (304) and abutting against the mounting rod (604); the lower ends of the conical tube (601) and the second conical tube (603) are respectively facing the discharge cover (203).

8. The grain seed winnowing and impurity removal device according to claim 7, characterized in that: Two supporting mechanisms (7) are arranged at the lower part of the second air separation cylinder (202), and a pushing assembly (8) is arranged on the supporting mechanism (7); the supporting mechanism (7) comprises a mounting frame (701) arranged on the second air separation cylinder (202), two rotating arms (702) both rotatably arranged on the mounting frame (701), two rotating arms (703) rotatably arranged on the first rotating arm (702), and two spherical pulleys (704) respectively arranged on the second rotating arms (703).

9. The grain seed winnowing and impurity removal device according to claim 8, characterized in that: The pushing assembly (8) comprises a mounting platform (801) arranged on the mounting frame (701), a sliding rod (802) arranged on the mounting platform (801), a sliding block (803) slidably arranged on the sliding rod (802), an elastic member 2 (804) arranged on the sliding rod (802) and abutting against the upper part of the sliding block (803), and two connecting rods (805) having two ends respectively connected to the sliding block (803) and the rotating arm 1 (702) for rotation.

10. The grain seed winnowing and impurity removal device according to claim 2, characterized in that: The negative pressure device (101), the dust collecting tube (102), the valve (103), and the connecting tube (104) are all detachably connected and are interference fit; a convex tube (1021) is provided in the dust collecting tube (102), and one end of the valve (103) is embedded in the convex tube (1021).

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