Screening and separating device and method for corn flour processing

Abstract

The invention discloses a screening and separating device and method for corn flour processing, and belongs to the technical field of crop screening devices and methods.The screening and separating device comprises a smashing mechanism, the smashing mechanism is installed on a bottom plate, and the smashing mechanism is used for processing corn kernels into powder and conveying the powder into a filtering and separating mechanism through a powder conveying pump; the filtering and separating mechanism comprises a vibration box, the periphery of the bottom end of the vibration box is connected with a bottom plate through first springs, vibration motors matched with the vibration box are installed at the two ends of the outer wall of the vibration box, and first stirring blades fixed to a rotating shaft are arranged under a material guiding opening in the vibration box; and a splitter plate arranged on the inner wall of the vibration box is arranged below the first stirring blade. The technical problems that raw materials are difficult to spread quickly and uniformly only through vibration in the screening process, so that the screening efficiency is affected, raw materials at the top of the stacking position cannot be effectively screened possibly due to raw material stacking, and the raw materials cannot be effectively and comprehensively spread can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of crop screening devices and methods, and in particular relates to a screening and separation device and method for corn flour processing. Background Art

[0002] Corn flour is a powder made from corn kernels. Its main ingredients are starch, protein, fat, vitamins and other nutrients. Corn flour contains a large amount of lecithin, linoleic acid, cereal alcohol, vitamin E, cellulose, etc. It has many health benefits such as lowering blood pressure, lowering blood lipids, anti-atherosclerosis, preventing colon cancer, beautifying and delaying aging. It is also a suitable product for diabetics.

[0003] During the corn processing process, the corn flour is often screened by driving the screen plate to vibrate through a vibration motor. The raw materials on the screen plate are prone to accumulation during the falling process. During the screening process, it is difficult to spread the raw materials quickly and evenly only through vibration, which affects the screening efficiency. Moreover, the accumulation of raw materials may result in the inability to effectively screen the raw materials on the top of the accumulation. If the raw materials cannot be effectively and comprehensively spread out, the screening effect is affected, and impurities may still be mixed in the corn flour, which is not conducive to collection. Summary of the invention

[0004] The object of the present invention is to provide a screening and separation device and method for corn flour processing, so as to solve the technical problems that it is difficult to spread the raw materials quickly and evenly only by vibration during the screening process, thereby affecting the screening efficiency, and the accumulation of raw materials may lead to the inability to effectively screen the raw materials at the top of the accumulation, and the raw materials cannot be effectively and comprehensively spread.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A screening and separation device for corn flour processing, comprising:

[0007] A pulverizing mechanism, which is mounted on the bottom plate and is used to process corn kernels into powder and transport them to the filtering and separating mechanism through a powder delivery pump;

[0008] A filtering and separating mechanism, the filtering and separating mechanism comprises a vibration box, the bottom end of the vibration box is connected to a bottom plate via a first spring, both ends of the outer wall of the vibration box are equipped with vibration motors adapted thereto, and a first stirring blade fixed on a rotating shaft is provided just below the material guide port on the vibration box, a diverter plate disposed on the inner wall of the vibration box is provided below the first stirring blade, and a coarse filter plate and a fine filter plate disposed on the side wall of the vibration box are detachably installed below the diverter plate, and one end of the rotating shaft on the first stirring blade is correspondingly connected to a first spreading component and a second spreading component via a transmission component;

[0009] A first spreading component, wherein the first spreading component comprises spreading plates symmetrically arranged on the top of the coarse filter plate, and as the first stirring blade rotates and drives the transmission component to move, the spreading plates at both ends of the coarse filter plate move in the opposite direction in alignment;

[0010] The second spreading component includes a second stirring blade placed between the coarse filter plate and the fine filter plate, one end of the second stirring blade penetrates the vibration box and extends to the transmission component. As the first stirring blade rotates and drives the transmission component to move, the second stirring blade rotates and evenly introduces the corn flour onto the fine filter plate.

[0011] Furthermore, the transmission assembly includes a driving wheel fixed on a rotating shaft, the outer wall of the driving wheel is connected to a first driven wheel fixed on a first bevel gear through a first conveyor belt transmission, the outer wall of the first bevel gear is meshed with a second bevel gear fixed on a first movable shaft, one end of the first movable shaft extends to the top of the inner wall of the cover body, and the other end is connected to a turntable, the turntable and the pushing block are connected by a swing rod, and one end of the pushing block is connected to a first gear plate extending to the inner wall of the fixed frame.

[0012] Furthermore, both ends of the swing rod are connected to the protrusion of the turntable and the push block by a rotatable installation, the push block and the side wall of the cover body are connected by a second spring, and the limiting part at the bottom end of the push block is connected to the limiting groove along the length direction of the inner wall of the cover body.

[0013] Furthermore, one end of the push block is integrally connected with a beam placed on the first gear plate, the outer wall of the beam is provided with a rectangular groove placed on the inner wall of the cover body, and the push block and the limiting part are connected and locked by a positioning pin.

[0014] Furthermore, the outer wall of the first gear plate is meshed with a second gear plate that moves in the opposite direction through a central gear, the outer wall edges of the first gear plate and the second gear plate are provided with sliding grooves placed on the inner wall of the fixed frame, and the bottom ends of the first gear plate and the second gear plate are fixed on the spread plate, and the fixed frame and the top of the diverter plate are both arranged in a triangular shape.

[0015] Furthermore, the first driven wheel and the second driven wheel are connected via a second conveyor belt transmission, the second conveyor belt and the first conveyor belt are arranged in parallel, and one end of the second driven wheel is connected to the second stirring blade.

[0016] Furthermore, the crushing mechanism includes a driving motor placed on the top of the crushing barrel, the output shaft of the driving motor passes through the crushing barrel and extends to the third bevel gear through the second movable shaft, and the second movable shaft is connected to the first crushing knife distributed evenly, and the first crushing knife is set to be 5-9cm in length from top to bottom.

[0017] Furthermore, the outer wall of the third bevel gear is meshed with a fourth bevel gear fixed on the third movable shaft, and the third movable shaft is equipped with a second crushing knife vertically distributed with the first crushing knife.

[0018] A screening and separation method for corn flour processing comprises the following steps:

[0019] S1, putting corn kernels into a crushing mechanism, starting a driving motor, causing the first crushing blade and the second crushing blade to rotate and crush the corn kernels in horizontal and vertical directions and process the corn kernels into powder, which is then transported to a filtering and separation mechanism through a powder delivery pump;

[0020] S2, the vibration motor is started, the corn flour falls into the guide port, and the first stirring blade is driven to rotate by the action of gravity sliding, and the first bevel gear on the first driven wheel is rotated by the action of mechanical transmission. With the help of gear meshing transmission, the push block moves back and forth horizontally in the limit groove, and drives the spreading plates at both ends to move in the opposite direction, so that the corn flour on the coarse filter plate can be spread;

[0021] S3, when the first driven wheel rotates, the second driven wheel is driven to rotate through the second conveyor belt, and the second stirring blade is rotated, so that the corn flour can be spread on the fine filter plate during the rotation process, vibrated and screened, and finally collected through the drop port to complete the processing.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] (1) A crushing mechanism is provided. After the driving motor is started, it can drive the first crushing knife and the second crushing knife to rotate and cut. Moreover, the two are vertically distributed so that the corn kernels can be fully and effectively crushed. The first crushing knife is shortened from top to bottom to ensure that the first crushing knife at the bottom is subjected to excessive pressure on the corn kernels and can rotate and cut freely. The second crushing knife is vertically arranged because it is mainly subjected to lateral pressure and has relatively small pressure. Therefore, it can perform normal rotation and cutting work. The crushing mechanism can effectively process the corn kernels into powder, which is convenient for subsequent screening and separation work. The design is reasonable and the working efficiency is high.

[0024] (2) A filtering and separation mechanism is provided. When the vibration box is vibrated by the vibration motor, the corn flour is filtered twice through the coarse filter plate and the fine filter plate, so that impurities are separated from the corn flour. At the same time, the coarse filter plate and the fine filter plate are respectively provided with a first spreading component and a second spreading component. In this way, the corn flour can be effectively spread evenly on the filter plate to prevent accumulation on the filter plate, thereby preventing effective filtering and separation work and ensuring the normal screening work. At the same time, during the rotation of the second stirring blade, the corn flour can be dispersed and stirred to reduce the accumulation of corn flour on one side of the fine filter plate, which is beneficial to improving the screening efficiency.

[0025] (3) A transmission component is provided. When the corn flour falls, the first stirring blade can be driven to rotate. The first stirring blade can not only disperse and stir the corn flour, but also drive the rotation of the driving wheel. Under the action of mechanical transmission, the pushing block can be driven to move back and forth in the horizontal direction. In this way, the first gear plate and the second gear plate can drive the spreading plates at both ends to move in the opposite direction to spread the corn flour under the action of gear meshing transmission. At the same time, the power is transmitted to the second driven wheel, and the second stirring blade is driven to stir and disperse the corn flour, so that the corn flour can be evenly spread. There is no need to design an additional power source, which is beneficial to saving resources. The structure has strong integrated performance and good application effect.

[0026] (4) During the entire corn flour screening process, the operation is simple and the degree of automation is high. The corn kernels can be crushed comprehensively and effectively, and the impurity particles can be fully separated from the corn flour, thereby improving the screening quality and facilitating collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a structural schematic diagram of a screening and separation device for corn flour processing of the present invention;

[0029] Figure 2 It is a front view of a screening and separation device for corn flour processing of the present invention;

[0030] Figure 3 It is a right view of a screening and separation device for corn flour processing of the present invention;

[0031] Figure 4 is a schematic diagram of the interior of the vibration box of the present invention;

[0032] Figure 5 Schematic diagram of meshing transmission between the first bevel gear and the second bevel gear of the present invention;

[0033] Figure 6 is a connection diagram of the central gear of the present invention;

[0034] Figure 7 It is a structural schematic diagram of the fixing frame of the present invention;

[0035] Figure 8 The present invention Figure 4 A magnified image of point A;

[0036] Fig. 9 It is a schematic diagram of the interior of the pulverizing tube of the present invention;

[0037] Fig.10 The present invention is a schematic flow diagram of a screening and separation method for corn flour processing.

[0038] Reference numerals: 1, crushing mechanism; 2, powder delivery pump; 3, filtering and separating mechanism; 4, vibration box; 5, first spring; 6, vibration motor; 7, first stirring blade; 8, diverter plate; 9, coarse filter plate; 10, fine filter plate; 11, transmission assembly; 12, first spreading assembly; 13, second spreading assembly; 14, spreading plate; 15, second stirring blade; 16, driving wheel; 17, first conveyor belt; 18, first bevel gear; 19, first driven wheel; 20, first movable shaft; 2 1. Second bevel gear; 22. Turntable; 23. Push block; 24. Swing rod; 25. Fixed frame; 26. First gear plate; 27. Second spring; 28. Limiting part; 29. ​​Center gear; 30. Second gear plate; 31. Second driven wheel; 32. Second conveyor belt; 33. Crushing barrel; 34. Driving motor; 35. Second movable shaft; 36. Third bevel gear; 37. First crushing knife; 38. Third movable shaft; 39. Fourth bevel gear; 40. Second crushing knife. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Reference Manual Attached Figure 1 and Figure 2 As shown, a screening and separation device for corn flour processing comprises:

[0041] A crushing mechanism 1 is mounted on the bottom plate and is used to process corn kernels into powder and transport them to a filtering and separating mechanism 3 through a powder delivery pump 2;

[0042] The filtering and separating mechanism 3 comprises a vibration box 4, the bottom of the vibration box 4 is connected to a bottom plate through a first spring 5, both ends of the outer wall of the vibration box 4 are equipped with a vibration motor 6 adapted thereto, and a first stirring blade 7 fixed on a rotating shaft is provided just below the material guide port on the vibration box 4, a diverter plate 8 disposed on the inner wall of the vibration box 4 is provided below the first stirring blade 7, and a coarse filter plate 9 and a fine filter plate 10 disposed on the side wall of the vibration box 4 are detachably installed below the diverter plate 8, and one end of the rotating shaft on the first stirring blade 7 is correspondingly connected to a first spreading component 12 and a second spreading component 13 through a transmission component 11;

[0043] The first spreading component 12, the first spreading component 12 includes a spreading plate 14 symmetrically arranged on the top of the coarse filter plate 9, as the first stirring blade 7 rotates and drives the transmission component 11 to move, the spreading plates 14 at both ends of the coarse filter plate 9 move in opposite directions; the second spreading component 13, the second spreading component 13 includes a second stirring blade 15 placed between the coarse filter plate 9 and the fine filter plate 10, one end of the second stirring blade 15 passes through the vibration box 4 and extends to the transmission component 11, as the first stirring blade 7 rotates and drives the transmission component 11 to move, the second stirring blade 15 rotates and evenly introduces the corn flour to the fine filter plate 10.

[0044] After the vibration motor 6 is started, it can drive the vibration box 4 to vibrate up and down on the top of the first spring 5, thereby helping the corn flour to be vibrated and screened. In addition, the vibration motor 6 is symmetrically arranged on both sides of the vibration box 4 as the center, which can ensure a good balance of the device, allowing the vibration box 4 to perform stable vibration work and prevent large position deviations from occurring during the vibration process.

[0045] A filtering and separation mechanism 3 is provided. When the vibration box 4 is vibrated by the vibration motor 6, the corn flour is filtered twice through the coarse filter plate 9 and the fine filter plate 10, so that impurities are separated from the corn flour. At the same time, the coarse filter plate 9 and the fine filter plate 10 are respectively provided with a first spreading component 12 and a second spreading component 13, so that the corn flour can be effectively spread evenly on the filter plate to prevent accumulation on the filter plate, thereby affecting the effective filtering and separation work and ensuring the normal screening work. At the same time, during the rotation of the second stirring blade 15, the corn flour can be dispersed and stirred to reduce the accumulation of corn flour on one side of the fine filter plate 10, which is beneficial to improving the screening efficiency.

[0046] refer to Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The transmission assembly 11 includes a driving wheel 16 fixed on the rotating shaft, the outer wall of the driving wheel 16 is connected to a first driven wheel 19 fixed on a first bevel gear 18 through a first conveyor belt 17, the outer wall of the first bevel gear 18 is meshed with a second bevel gear 21 fixed on a first movable shaft 20, one end of the first movable shaft 20 extends to the top of the inner wall of the cover, and the other end is connected to a turntable 22, the turntable 22 and the pushing block 23 are connected by a swing rod 24, and one end of the pushing block 23 is connected to a first gear plate 26 extending to the inner wall of the fixed frame 25.

[0047] Both ends of the swing rod 24 are connected to the protrusion of the turntable 22 and the push block 23 by a rotatable installation. The push block 23 and the side wall of the cover body are connected by a second spring 27. The limiting part 28 at the bottom end of the push block 23 is connected to the limiting groove along the length direction of the inner wall of the cover body.

[0048] One end of the push block 23 is integrally formed with a crossbeam placed on the first gear plate 26, and the outer wall of the crossbeam is provided with a rectangular groove placed on the inner wall of the cover body. The push block 23 and the limit portion 28 are connected by a positioning pin locking and fixing method. The outer wall of the first gear plate 26 is meshed with a second gear plate 30 that moves in the opposite direction through the central gear 29. The outer wall edges of the first gear plate 26 and the second gear plate 30 are provided with sliding grooves placed on the inner wall of the fixing frame 25, and the bottom ends of the first gear plate 26 and the second gear plate 30 are fixed on the spreading plate 14, and the tops of the fixing frame 25 and the diverter plate 8 are both triangularly arranged.

[0049] During the falling process, the corn flour drives the first stirring blade 7 to rotate through the action of gravity, and then the rotation drives the driving wheel 16 to rotate. The first conveyor belt 17 can transmit power to the first driven wheel 19, and then the horizontal rotational force of the first bevel gear 18 is converted into the rotation of the second bevel gear 21 in the vertical direction, thereby driving the turntable 22 to rotate. Due to the rotation connection setting of the swing rod 24, the pushing block 23 can be horizontally moved in the limiting groove, and the limiting portion 28 setting on the pushing block 23 can further play the role of limiting connection to prevent the pushing block 23 from leaving the horizontal track during the movement. At the same time, the second spring 27 set on the pushing block 23 can help the pushing block 23 to play a positioning and guiding role during the movement, and can also help the pushing block 23 return to its original position.

[0050] A transmission component 11 is provided, and the corn flour can drive the rotation of the first stirring blade 7 during the falling process. The first stirring blade 7 can not only play the role of dispersion and stirring, but also drive the rotation of the driving wheel 16. Under the action of mechanical transmission, it can drive the pushing block 23 to reciprocate in the horizontal direction. In this way, the first gear plate 26 and the second gear plate 30 can drive the spreading plates 14 at both ends to move in the opposite direction to spread out under the action of gear meshing transmission. At the same time, the power is transmitted to the second driven wheel 31, and the second stirring blade 15 is driven to stir and disperse, so that the corn flour can be evenly spread out. There is no need to design an additional power source, which is beneficial to saving resources, and the structural integration performance is strong and the application effect is good.

[0051] Specifically, when the pushing block 23 moves back and forth, it can drive the first gear plate 26 to move synchronously, and because the center gear 29 is set, the meshing transmission of the center gear 29 can drive the second gear plate 30 at the other end of the side wall of the fixed frame 25 to move in the opposite direction, so that the spreading plate 14 correspondingly connected to the first gear plate 26 and the second gear plate 30 can spread the corn flour on the filter plate. At the same time, the triangular setting of the diverter plate 8 and the top of the fixed frame 25 can, on the one hand, prevent the corn flour from accumulating, and on the other hand, can play a role in diverting the raw materials, and to a certain extent, can achieve the purpose of uniformly dispersing the corn flour.

[0052] refer to Figure 3 , Figure 4 and Figure 8 The first driven wheel 19 and the second driven wheel 31 are connected to each other through the second conveyor belt 32. The second conveyor belt 32 and the first conveyor belt 17 are kept parallel, and one end of the second driven wheel 31 is connected to the second stirring blade 15. The parallel setting of the above-mentioned conveyor belts can avoid interference between the transmission parts during operation, thereby ensuring the normal transmission of each part. When the second driven wheel 31 rotates, it can drive the rotation of the second stirring blade 15, thereby stirring and dispersing the corn flour, and can make the corn flour fall onto the filter plate evenly to a certain extent.

[0053] In addition, the inner wall of the vibration box 4 is provided with a rotation groove connected to the second driven wheel 31 and the second stirring blade 15, so that the two can be ensured to rotate freely and provide corresponding supporting force.

[0054] refer to Figure 1 and Fig. 9The pulverizing mechanism 1 includes a driving motor 34 placed on the top of the pulverizing cylinder 33. The output shaft of the driving motor 34 passes through the pulverizing cylinder 33 and extends to the third bevel gear 36 through the second movable shaft 35. The second movable shaft 35 is connected with first pulverizing knives 37 distributed equidistantly. The length of the first pulverizing knives 37 from top to bottom is reduced to 5-9 cm. The outer wall of the third bevel gear 36 is meshed with a fourth bevel gear 39 fixed on the third movable shaft 38. The third movable shaft 38 is equipped with a second pulverizing knife 40 distributed vertically to the first pulverizing knife 37.

[0055] A crushing mechanism 1 is set up. After the driving motor 34 is started, it can drive the first crushing knife 37 and the second crushing knife 40 to rotate and cut. Moreover, the vertical distribution of the two can fully and effectively crush the corn kernels. The first crushing knife 37 is shortened from top to bottom to ensure that the corn kernels at the bottom of the first crushing knife 37 are subjected to excessive pressure and can rotate and cut freely. The second crushing knife 40 is vertically set because it is mainly subjected to lateral pressure and has relatively small pressure. Therefore, it can perform normal rotation and cutting work. The crushing mechanism 1 can effectively process the corn kernels into powder, which is convenient for subsequent screening and separation work. The design is reasonable and the working efficiency is high.

[0056] refer to Fig.10 , a screening and separation method for corn flour processing, comprising the following steps:

[0057] S1, corn kernels are placed into the crushing mechanism 1, the driving motor 34 is started, the first crushing blade 37 and the second crushing blade 40 perform horizontal and vertical rotation crushing work and process the corn kernels into powder, and then transport them to the filtering and separating mechanism 3 through the powder transporting pump 2;

[0058] S2, the vibration motor 6 is started, the corn flour falls into the guide port, and the first stirring blade 7 is driven to rotate by the action of gravity sliding, and the first bevel gear 18 on the first driven wheel 19 is rotated by the action of mechanical transmission. With the help of gear meshing transmission, the push block 23 moves back and forth horizontally in the limit groove, and drives the spreading plates 14 at both ends to move in the opposite direction to the center, so that the corn flour on the coarse filter plate 9 can be spread;

[0059] S3, when the first driven wheel 19 rotates, the second driven wheel 31 is driven to rotate through the second conveyor belt 32, and the second stirring blade 15 is rotated, so that the corn flour can be spread on the fine filter plate 10 during the rotation process, vibrated and screened, and finally collected through the drop port to complete the processing.

[0060] The entire corn flour screening process is simple to operate and highly automated, so the corn kernels can be fully and effectively crushed, and the impurity particles can be fully separated from the corn flour, thus improving the screening quality and facilitating collection.

[0061] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0062] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A screening and separation device for corn flour processing, characterized in that: include: A pulverizing mechanism (1), the pulverizing mechanism (1) being mounted on a bottom plate and used for processing corn kernels into powder and transporting the powder to a filtering and separating mechanism (3) via a powder transporting pump (2); A filtering and separating mechanism (3), the filtering and separating mechanism (3) comprising a vibration box (4), the bottom of the vibration box (4) being connected to a bottom plate via a first spring (5) on all sides, a vibration motor (6) adapted thereto being installed at both ends of the outer wall of the vibration box (4), and a first stirring blade (7) fixed on a rotating shaft being provided just below the material guide port on the vibration box (4), a flow divider plate (8) disposed on the inner wall of the vibration box (4) being provided below the first stirring blade (7), and a coarse filter plate (9) and a fine filter plate (10) disposed on the side wall of the vibration box (4) being detachably installed below the flow divider plate (8), and one end of the rotating shaft on the first stirring blade (7) being correspondingly connected to a first spreading component (12) and a second spreading component (13) via a transmission component (11); A first spreading component (12), the first spreading component (12) comprising a spreading plate (14) symmetrically arranged on the top of the coarse filter plate (9), wherein as the first stirring blade (7) rotates and drives the transmission component (11) to move, the spreading plates (14) at both ends of the coarse filter plate (9) move in the opposite directions in alignment; A second spreading component (13), the second spreading component (13) includes a second stirring blade (15) disposed between the coarse filter plate (9) and the fine filter plate (10), one end of the second stirring blade (15) passes through the vibration box (4) and extends to the transmission component (11), as the first stirring blade (7) rotates and drives the transmission component (11) to move, the second stirring blade (15) rotates and evenly introduces the corn flour onto the fine filter plate (10).

2. A screening and separation device for corn flour processing according to claim 1, characterized in that: The transmission assembly (11) comprises a driving wheel (16) fixed on a rotating shaft, the outer wall of the driving wheel (16) is connected to a first driven wheel (19) fixed on a first bevel gear (18) through a first conveyor belt (17), the outer wall of the first bevel gear (18) is meshed with a second bevel gear (21) fixed on a first movable shaft (20), one end of the first movable shaft (20) extends to the top of the inner wall of the cover body, and the other end is connected to a rotating disk (22), the rotating disk (22) and a pushing block (23) are connected through a swing rod (24), and one end of the pushing block (23) is connected to a first gear plate (26) extending to the inner wall of a fixed frame (25).

3. A screening and separation device for corn flour processing according to claim 2, characterized in that: Both ends of the swing rod (24) are connected to the protruding portion of the turntable (22) and the push block (23) by means of rotational installation; the push block (23) and the side wall of the cover body are connected via a second spring (27); and the limiting portion (28) at the bottom end of the push block (23) is connected to the limiting groove along the length direction of the inner wall of the cover body.

4. A screening and separation device for corn flour processing according to claim 3, characterized in that: One end of the push block (23) is integrally connected to a crossbeam placed on the first gear plate (26); the outer wall of the crossbeam is provided with a rectangular groove placed on the inner wall of the cover body; the push block (23) and the limiting portion (28) are connected in a locking and fixing manner by a positioning pin.

5. A screening and separation device for corn flour processing according to claim 4, characterized in that: The outer wall of the first gear plate (26) is meshed with a second gear plate (30) that moves in the opposite direction through a central gear (29); the outer wall edges of the first gear plate (26) and the second gear plate (30) are provided with sliding grooves that are placed on the inner wall of the fixing frame (25); the bottom ends of the first gear plate (26) and the second gear plate (30) are fixed on the spreading plate (14); and the tops of the fixing frame (25) and the diverter plate (8) are both arranged in a triangular shape.

6. A screening and separation device for corn flour processing according to claim 2, characterized in that: The first driven wheel (19) and the second driven wheel (31) are connected to each other through a second conveyor belt (32); the second conveyor belt (32) and the first conveyor belt (17) are arranged parallel to each other, and one end of the second driven wheel (31) is connected to the second stirring blade (15).

7. A screening and separation device for corn flour processing according to claim 1, characterized in that: The pulverizing mechanism (1) comprises a driving motor (34) disposed at the top of a pulverizing cylinder (33); an output shaft of the driving motor (34) penetrates the pulverizing cylinder (33) and extends to a third bevel gear (36) via a second movable shaft (35); the second movable shaft (35) is connected with first pulverizing knives (37) distributed at equal intervals; the first pulverizing knives (37) are arranged to be 5-9 cm in length from top to bottom.

8. A screening and separation device for corn flour processing according to claim 7, characterized in that: The outer wall of the third bevel gear (36) is meshed with a fourth bevel gear (39) fixed on a third movable shaft (38), and a second crushing knife (40) vertically distributed with the first crushing knife (37) is installed on the third movable shaft (38).

9. A screening and separation method for corn flour processing, applied to a screening and separation device for corn flour processing according to any one of claims 1 to 8, characterized in that: The steps include: S1, corn kernels are placed into a crushing mechanism (1), a driving motor (34) is started, a first crushing blade (37) and a second crushing blade (40) perform horizontal and vertical rotation crushing operations and process the corn kernels into powder, and then the powder is transported to a filtering and separating mechanism (3) through a powder transporting pump (2); S2, the vibration motor (6) is started, the corn flour falls into the material guide port, and the first stirring blade (7) is driven to rotate by the action of gravity sliding down, and the first bevel gear (18) on the first driven wheel (19) is rotated by the action of mechanical transmission, and the push block (23) moves back and forth horizontally in the limit groove by means of gear meshing transmission, and drives the spreading plates (14) at both ends to move in the opposite direction to the center, so that the corn flour on the coarse filter plate (9) can be spread; S3, when the first driven wheel (19) rotates, the second driven wheel (31) is driven to rotate through the second conveyor belt (32), and the second stirring blade (15) is rotated, so that the corn flour can be spread on the fine filter plate (10) during the rotation process, vibrated and screened, and finally collected through the drop port to complete the processing.

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