Grain filtering device

Abstract

The utility model provides a grain filtering device. The grain filtering device comprises a support, a funnel assembly arranged on the upper portion of the support, a filtering assembly arranged at the outlet end of the funnel assembly, a collecting box which covers one side of the filtering assembly and is provided with a cavity, and an air supply assembly arranged on the other side of the filtering assembly. The support is further connected with a first driving part, a crank is arranged between the first driving part and the filtering assembly, and the first driving part drives the filtering assembly to eccentrically rotate along the power output shaft of the filtering assembly. The filtering assembly comprises a cover body with a plurality of screen holes and a plurality of layers of screen cloth arranged in the cover body. The aperture of the screen holes is smaller than the shape of grains, and the aperture of the multi-layer screen is sequentially reduced from top to bottom. When raw materials enter the cover body through the funnel assembly, the air supply assembly supplies air to the raw materials, and part of impurities in the raw materials are blown into the collecting box. According to the grain filtering device disclosed by the utility model, finished grains subjected to multi-layer screening are positioned at the bottom of the cover body, so that the screening efficiency is improved, and the quality of the filtered and screened grains is ensured.

Description

Technical Field

[0001] This utility model relates to the field of agricultural processing equipment technology, and in particular to a grain filtering device. Background Technology

[0002] The principle of grain screening is to separate grains based on differences in width, thickness, or shape. Rectangular sieves separate grains based on thickness. Circular sieves separate grains based on width. Triangular sieves separate grains based on shape.

[0003] Although many instruments exist for grain filtration and screening, existing filtration devices are ineffective for lightweight, small-particle grains. Firstly, the simple cleaning process during raw material collection leads to excessive impurities in the initial stages, resulting in low screening efficiency and high machine energy consumption. Secondly, for grains like sesame and flaxseed, which have thin skins, thick kernels, and high oil content, multiple passes through the filter screen and components cause wear and tear on the outer skin, resulting in oil powder adhering to pipes, screens, and fan blades. This further increases the equipment load, reduces instrument lifespan, and increases grain breakage, leading to lower grain yield and affecting grain quality. Utility Model Content

[0004] In view of this, the present invention aims to provide a grain filtration device that can efficiently screen raw materials, protect the thin outer skin of grains, prevent damage due to repeated handling, and ensure the quality of grains after filtration and screening.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A grain filtration device includes a support, a funnel assembly disposed on the upper part of the support, a filter assembly disposed at the outlet end of the funnel assembly, a collection box covered on one side of the filter assembly and having a cavity, and an air supply assembly disposed on the other side of the filter assembly.

[0007] The bracket is also connected to a first drive unit, and a crank is provided between the first drive unit and the filter assembly. The first drive unit drives the filter assembly to rotate eccentrically along its power output shaft.

[0008] The filter assembly includes a cover with a plurality of sieve holes, and multiple layers of sieves disposed within the cover.

[0009] The aperture of the sieve is smaller than the shape of the grain, and the aperture of the multi-layer sieve decreases from top to bottom.

[0010] When the raw material enters the hood through the funnel assembly, the air supply assembly blows air onto the raw material, and some impurities in the raw material are blown into the collection box.

[0011] Furthermore, the funnel assembly includes a feed inlet disposed on the support, a cone covering the feed inlet, a first feed plate and a second feed plate disposed within the opening of the cone;

[0012] The first feed plate and the second feed plate form a feeding channel, which is connected to the feed inlet.

[0013] Furthermore, a tilting plate is provided at the feed inlet, the length direction of the tilting plate is arranged along the length direction of the feed inlet, and a long shaft and a second drive unit are also provided on the bracket;

[0014] The flip plate is connected to the long shaft, and the second drive unit drives the flip plate to rotate at a preset angle, forming a discharge port between the flip plate and the upper plane of the bracket.

[0015] Furthermore, the air supply assembly includes a rotating shaft pivotally connected to the bracket along the width direction, a third drive unit for driving the rotating shaft to rotate, blades evenly distributed on the rotating shaft around the circumference, and a cylinder surrounding the outside of the blades.

[0016] The cylinder is fixedly connected to the bracket, and an air outlet is formed on the side of the cylinder near the filter assembly. The air outlet extends along the width direction of the bracket.

[0017] Furthermore, the cover body has a circular shaft at its center, which is connected to the crank, and the multiple layers of screens are arranged at intervals along the axial direction of the circular shaft;

[0018] The cover is provided with outlet channels corresponding to each layer of screens in sequence below it. The cover is provided with a material leakage port on one side of the outlet channel. The material leakage port is provided with a first movable door that slides radially along the cover.

[0019] The first movable door is used to block or open the leakage port.

[0020] Furthermore, one end of the round shaft is provided with an extension shaft, and a detachable handle assembly is inserted into the extension shaft. The extension shaft passes through the crank, and a scraper is connected to the round shaft. The scraper abuts against the screen above the screen.

[0021] The handle assembly is driven to rotate the circular shaft, and the scraper rotates to drive the sieved grain into the outlet channel.

[0022] Furthermore, the cover is cylindrical, and a circular cavity is formed inside the cover. The three screens divide the cavity into four sub-cavities.

[0023] The four scrapers are respectively disposed in the four compartments.

[0024] Furthermore, an air vent is provided on one side of the collection box, and a dustproof net is provided at the air vent.

[0025] Furthermore, the collection box has a cavity for receiving filtered materials, and a second movable door is provided on one side of the collection box, which is used to block the discharge port of the collection box.

[0026] Compared with the prior art, this utility model has the following advantages:

[0027] The grain filtering device of this invention uses a funnel assembly to hold the grain raw material after simple filtration. The grain raw material falls from the funnel assembly to the filtering assembly under gravity, while an air supply assembly blows air onto the falling grain, blowing out dust and impurities. The impurities and dust pass through the sieve holes of the cover and enter the collection box, achieving primary filtration. Furthermore, a first drive unit drives the filtering assembly to rotate eccentrically along its power output shaft. During rotation, the grain inside the cover experiences centrifugal force. When the first drive unit drives the filtering assembly to alternately rotate forward and reverse, rapid sieving is achieved. The upper sieve can separate large-shaped impurities from the grain. The finished grain product, after multi-layer sieving, is located at the bottom of the cover, improving sieving efficiency while ensuring the quality of the filtered grain.

[0028] Furthermore, by setting a second drive unit to rotate the tilting plate, the size of the discharge port can be adjusted according to the grain conveying speed requirements, further improving the screening effect and efficiency. Additionally, by setting a third drive unit to rotate the paddles and supply air to the filter assembly through the air inlet, small impurities and dust present in the grain are blown into the collection box by the airflow as the grain falls under gravity. Attached Figure Description

[0029] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0030] Figure 1 This is a front cross-sectional view of the grain filtering device described in an embodiment of the present invention;

[0031] Figure 2 This is a top view schematic diagram of the grain filtering device described in an embodiment of the present invention;

[0032] Figure 3 for Figure 1 A magnified view of a section at point I.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Support frame; 2. Funnel assembly; 3. Filter assembly; 4. Collection box; 5. Air supply assembly; 6. First drive unit; 7. Crank; 8. Tilting plate; 9. Second drive unit; 10. Long shaft; 11. Discharge port; 12. Outlet channel; 13. First movable door; 14. Air outlet; 15. Dustproof net; 16. Second movable door; 17. Side plate;

[0035] 201. Feed inlet; 202. Conical body; 203. First feed plate; 204. Second feed plate;

[0036] 301. Cover body; 302. Screen; 303. Round shaft; 304. Extension shaft; 305. Handle assembly; 306. Chamber; 307. Scraper;

[0037] 401. Receiving cavity;

[0038] 501, Rotating shaft; 502, Third drive unit; 503, Blade; 504, Cylinder; 505, Air outlet. Detailed Implementation

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0040] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0042] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] This embodiment relates to a grain filtering device, which includes a support 1, a funnel assembly 2 disposed on the upper part of the support 1, a filter assembly 3 disposed at the outlet end of the funnel assembly 2, a collection box 4 covering one side of the filter assembly 3 and having a cavity, and an air supply assembly 5 disposed on the other side of the filter assembly 3. A first drive unit 6 is also connected to the support 1, and a crank 7 is provided between the first drive unit 6 and the filter assembly 3. The first drive unit 6 drives the filter assembly 3 to rotate eccentrically along its power output shaft.

[0044] The filter assembly 3 includes a cover 301 with a plurality of sieve holes, and a multi-layer sieve 302 disposed within the cover 301. The sieve hole diameter is smaller than the shape of the grain, and the sieve diameter of the multi-layer sieve 302 decreases sequentially from top to bottom. When the raw material enters the cover 301 through the funnel assembly 2, the air supply assembly 5 supplies air to the raw material, and some impurities in the raw material are blown into the collection box 4.

[0045] In this embodiment, the grain filtration device uses a funnel assembly 2 to hold the grain raw material after simple filtration. The grain raw material falls from the funnel assembly 2 to the filter assembly 3 under gravity, while the air supply assembly 5 blows air onto the falling grain, blowing out dust and impurities. The impurities and dust pass through the sieve holes of the cover 301 and enter the collection box 4, achieving primary filtration. Furthermore, a first drive unit 6 drives the filter assembly 3 to rotate eccentrically along its power output shaft. During rotation, the grain inside the cover 301 experiences centrifugal force. When the first drive unit 6 drives the filter assembly 3 to alternately rotate forward and reverse, rapid sieving is achieved. The upper sieve 302 can separate large-shaped impurities from the grain. The finished grain product, after multi-layer sieving, is located at the bottom of the cover 301, improving sieving efficiency while ensuring the quality of the filtered grain.

[0046] Based on the above overall description, an exemplary structure of the grain filtering device in this embodiment is as follows: Figures 1 to 2 As shown, the support 1 is a rectangular frame welded from columns and beams. Side plates 17 are provided on both sides of the support 1 along the width direction, and a top plate is provided on the top of the support 1.

[0047] As a preferred embodiment, such as Figures 1 to 2 As shown, the funnel assembly 2 includes a feed inlet 201 mounted on a support 1, a conical body 202 covering the feed inlet 201, a first feed plate 203 and a second feed plate 204 disposed within the opening of the conical body 202. The first feed plate 203 and the second feed plate 204 form a feed channel, which communicates with the feed inlet 201. The funnel assembly 2 is connected to a top plate, which has a perforation that matches the shape of the feed inlet 201.

[0048] Furthermore, such as Figures 1 to 3 As shown, a tilting plate 8 is also provided at the feed inlet 201. The length direction of the tilting plate 8 is set along the length direction of the feed inlet 201. The support 1 is also provided with a long shaft 10 and a second drive unit 9. The tilting plate 8 is connected to the long shaft 10. The second drive unit 9 drives the tilting plate 8 to rotate by a preset angle, and a discharge port 11 is formed between the tilting plate 8 and the upper plane of the support 1. The long shaft 10 is pivotally connected between the two side plates 17.

[0049] Still Figures 1 to 2 As shown, both the first drive unit 6 and the second drive unit 9 use rotary motors. The second drive unit 9 controls the rotation angle of the tilting plate 8, and can adjust the size of the discharge port 11 according to the grain conveying speed requirements, thereby further improving the screening effect and screening efficiency.

[0050] In addition, such as Figure 1 and Figure 2 As shown, the air supply assembly 5 includes a rotating shaft 501 pivotally connected to the bracket 1 along its width direction, a third drive unit 502 for driving the rotating shaft 501 to rotate, blades 503 evenly distributed around the rotating shaft 501, and a cylinder 504 surrounding the blades 503. The cylinder 504 is fixedly connected to the bracket 1, and an air outlet 505 is formed on the side of the cylinder 504 near the filter assembly 3. The air outlet 505 extends along the width direction of the bracket 1. The rotating shaft 501 is similarly disposed between the two side plates 17 and pivotally connected to the side plates 17.

[0051] The third drive unit 502 uses a servo motor. By setting the third drive unit 502, the blade 503 is driven to rotate, and air is sent to the filter assembly 3 through the air outlet 505. When the grain falls under the action of gravity, the airflow blows the small-shaped debris and dust in the grain into the collection box 4.

[0052] Preferably, such as Figure 1 As shown, a circular shaft 303 is located at the center of the cover 301, and the circular shaft 303 is connected to the crank 7. Multiple layers of screens 302 are arranged sequentially at intervals along the axial direction of the circular shaft 303. Below the cover 301, outlet channels 12 corresponding to each layer of screens 302 are sequentially provided. A material leakage port is located on one side of the cover 301 at the outlet channel 12, and a first movable door 13 is provided at the material leakage port, sliding radially along the cover 301. The first movable door 13 is used to block or open the material leakage port. As a feasible implementation, the first movable door 13 in this embodiment is an electric door; this structure can be referenced from existing technology and will not be described in detail here.

[0053] Specifically, such as Figure 1As shown, the collection box 4 in this embodiment is formed into a rectangular structure and has an opening facing the air supply component 5. The cover 301 is formed into a cylindrical sieve structure 504. The circular shaft 303 passes through the axial direction of the cover 301 and abuts against the upper and lower side walls of the collection box 4. A bolt is provided at the upper end of the circular shaft 303 and is screwed onto the circular shaft 303. An upper arc groove is provided on the upper plate of the collection box 4. During the rotation of the filter component 3, the bolt slides in the arc groove to improve the movement stability of the cover 301. When the cover 301 moves to the end of the arc groove in this embodiment, it rotates in the opposite direction. This reciprocating motion is used to achieve the purpose of grain screening. Furthermore, the grain does not need to be rotated multiple times, ensuring that the shape of the grain is not damaged.

[0054] Preferably, such as Figure 1 As shown, one end of the circular shaft 303 is provided with an extension shaft 304, and a detachably connected handle assembly 305 is inserted into the extension shaft 304. The extension shaft 304 passes through the crank 7, and a scraper 307 is connected to the circular shaft 303. The scraper 307 abuts against the screen 302 respectively. Driving the handle assembly 305 causes the circular shaft 303 to rotate, and the scraper 307 rotates to drive the sieved grain into the outlet channel 12. The other end of the circular shaft 303 is provided with an extension shaft 304, and the end of the extension shaft 304 is designed as an outer rectangular structure.

[0055] In this embodiment, as Figure 1 As shown, the handle assembly 305 includes a socket shaft and a crank handle vertically connected to one end of the socket shaft. The other end of the socket shaft has an inner square hole adapted to the outer rectangular structure. When the first drive unit 6 drives the cover 301 to rotate for filtering, the handle assembly 305 disengages from the extension shaft 304. When the grain filtering is complete, it stops at the initial position.

[0056] like Figure 1 As shown, the initial position of the cover 301 in this embodiment is located near one end of the cylinder 504. As mentioned above, a plurality of outlet channels 12 are provided below the cylinder 504, each corresponding to a screen 302. Preferably, the cover 301 is cylindrical 504 in shape, and a circular cavity is formed inside the cover 301. Three screens 302 divide the cavity into four sub-cavities 306, and four scrapers 307 are respectively disposed in the four sub-cavities 306. When the cover 301 stops at the initial position, by connecting the handle assembly 305 to the extension shaft 304, the circular shaft 303 is driven to rotate, and the scrapers 307 rotate accordingly to push the collected material from each layer to the corresponding outlet channel 12 for collection. In addition to screening impurities, it can also collect grains of different particle sizes in layers, improving the convenience of subsequent processing.

[0057] Preferably, the screen 302 in this embodiment can be configured with rectangular screen holes, circular screen holes, and triangular screen holes, and can be separated according to the different widths, thicknesses, or shapes of materials, thereby improving the screening effect.

[0058] In addition, such as Figure 1 and Figure 2 As shown, a vent 14 is provided on one side of the collection box 4, and a dustproof net 15 is installed at the vent 14. By setting the dustproof net 15, the pollution of the external environment by dust can be reduced. In addition, the collection box 4 has a receiving cavity 401 for collecting filtered materials, and a second movable door 16 is provided on one side of the collection box 4. The second movable door 16 is used to block the discharge port of the collection box 4. The structure of the second movable door 16 is the same as that of the first movable door 13, and will not be described again here.

[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grain filtering device, characterized in that: Includes a support (1), a funnel assembly (2) disposed on the upper part of the support (1), a filter assembly (3) disposed at the outlet end of the funnel assembly (2), a collection box (4) covering one side of the filter assembly (3) and having a cavity, and an air supply assembly (5) disposed on the other side of the filter assembly (3). The bracket (1) is also connected to a first drive unit (6), and a crank (7) is provided between the first drive unit (6) and the filter assembly (3). The first drive unit (6) drives the filter assembly (3) to rotate eccentrically along its power output shaft. The filter assembly (3) includes a cover (301) with a plurality of sieve holes, and a multi-layer sieve (302) disposed inside the cover (301); The aperture of the sieve is smaller than the shape of the grain, and the aperture of the multi-layer sieve (302) decreases from top to bottom; When the raw material enters the cover (301) through the funnel assembly (2), the air supply assembly (5) supplies air to the raw material, and some impurities in the raw material are blown into the collection box (4).

2. The grain filtering device according to claim 1, characterized in that: The funnel assembly (2) includes a feed inlet (201) disposed on the support (1), a cone (202) covering the feed inlet (201), a first feed plate (203) and a second feed plate (204) disposed in the opening of the cone (202); The first feed plate (203) and the second feed plate (204) form a feeding channel, which is connected to the feed port (201).

3. The grain filtering device according to claim 2, characterized in that: The feed inlet (201) is also provided with a flip plate (8), the length direction of the flip plate (8) is arranged along the length direction of the feed inlet (201), and the bracket (1) is also provided with a long shaft (10) and a second drive unit (9); The flip plate (8) is connected to the long shaft (10), and the second driving part (9) drives the flip plate (8) to rotate by a preset angle, and a discharge port (11) is formed between the flip plate (8) and the upper plane of the bracket (1).

4. The grain filtering device according to claim 3, characterized in that: The air supply assembly (5) includes a pivot shaft (501) pivotally connected to the bracket (1) along the width direction, a third drive unit (502) for driving the pivot shaft (501) to rotate, blades (503) evenly distributed on the pivot shaft (501) around the circumference, and a cylinder (504) surrounding the outside of the blades (503). The cylinder (504) is fixedly connected to the bracket (1), and an air outlet (505) is formed on the side of the cylinder (504) near the filter assembly (3), and the air outlet (505) extends along the width direction of the bracket (1).

5. The grain filtering device according to claim 4, characterized in that: The cover (301) has a circular shaft (303) at its center, the circular shaft (303) is connected to the crank (7), and the multiple layers of screens (302) are arranged sequentially at intervals along the axial direction of the circular shaft (303); The cover (301) is provided with outlet channels (12) corresponding to each layer of screen (302) below it. The cover (301) is provided with a material leakage port on one side of the outlet channel (12). The material leakage port is provided with a first movable door (13) that slides radially along the cover (301). The first movable door (13) is used to block or open the leakage port.

6. The grain filtering device according to claim 5, characterized in that: One end of the round shaft (303) is provided with an extension shaft (304), and a detachable handle assembly (305) is inserted into the extension shaft (304). The extension shaft (304) passes through the crank (7). A scraper (307) is connected to the round shaft (303), and the scraper (307) abuts against the screen (302) respectively. The handle assembly (305) is driven to rotate the shaft (303), and the scraper (307) is rotated to drive the sieved grain into the outlet channel (12).

7. The grain filtering device according to claim 6, characterized in that: The cover (301) is cylindrical (504) in shape, and a circular cavity is formed inside the cover (301). The three screens (302) divide the cavity into four sub-cavities (306). The four scrapers (307) are respectively disposed in the four compartments (306).

8. The grain filtering device according to claim 7, characterized in that: The collection box (4) has an air vent (14) on one side, and a dustproof net (15) is provided at the air vent (14).

9. The grain filtering device according to claim 3, characterized in that: The collection box (4) has a cavity (401) for storing the filtered material. A second movable door (16) is provided on one side of the collection box (4). The second movable door (16) is used to block the discharge port of the collection box (4).

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