Vibrating screening device for grain screening

Abstract

The utility model relates to the technical field of grain processing, in particular to a grain screening vibration screening device which comprises a base, a plurality of springs are fixedly connected to the upper side of the base, a vibration screening frame is fixedly connected to the upper sides of the springs, a screening net is fixedly connected to the upper side of the vibration screening frame, and a feeding hopper is fixedly connected to the upper side of the vibration screening frame. A scattering rod is rotationally matched with the inner wall of the feeding hopper, and a plurality of knocking plates are fixedly connected to the scattering rod; a driving mechanism is arranged on the lower side of the vibrating screen frame. Through the arrangement of the driving mechanism, the linkage mechanism, the knocking plate and other components, the scattering rod and the knocking plate can be driven to work through the linkage mechanism by means of power of the driving mechanism, caked grains can be crushed through rotation of the knocking plate, the situation that the screening effect is affected by caking is prevented, screening errors caused by caking are avoided, the screening precision can be improved, and the screening efficiency is improved. And the screen can accurately distinguish the real sizes of material particles.

Description

Technical Field

[0001] This application relates to the technical field of grain processing, and in particular to a vibrating screening device for grain screening. Background Technology

[0002] A vibrating screen for grain screening is a mechanical device specifically designed for grain processing, used to screen and grade various types of grains. Its main principle relies on the vibrational force generated by a vibrating motor to create regular vibrations on the screen surface. After the grain material is conveyed onto the screen surface, it is separated according to differences in physical properties such as particle size, shape, and density under the action of vibration. Smaller grain particles pass through the screen openings, while larger particles that do not meet the corresponding screen opening size requirements remain on the screen surface and are conveyed to other outlets or areas. This achieves the purpose of screening grains, removing impurities, and classifying them into different particle size grades, thereby improving grain quality and meeting the quality requirements of subsequent processing, storage, and sales.

[0003] Traditional grain processing typically involves screening the stored grain in silos to classify it by size and grade it according to different particle sizes. However, in actual use, the grain may clump together due to moisture during storage or transportation, especially during vibration. This clumping makes it difficult for the screen to accurately distinguish the true size of the material particles according to the designed mesh size during subsequent screening. Some individual particles that should meet the size requirements of the undersize material are trapped in the clumping and cannot pass through the screen. As a result, the undersize material is missing these qualified particles that should have been screened out, while the oversize material contains small particles that should not be present. The overall screening accuracy is reduced, failing to achieve the precision required for high-quality screening and affecting the screening quality. Utility Model Content

[0004] In order to solve the problems mentioned in the background art, this application provides a vibrating screening device for grain screening.

[0005] This application provides a vibrating screening device for grain screening, which adopts the following technical solution: it includes a base, a plurality of springs are fixedly connected to the upper side of the base, a vibrating screen frame is fixedly connected to the upper side of the plurality of springs, a screening screen is fixedly connected to the upper side of the vibrating screen frame, a feed hopper is fixedly connected to the upper side of the vibrating screen frame, a dispersing rod is rotatably fitted to the inner wall of the feed hopper, and a plurality of striking plates are fixedly connected to the dispersing rod;

[0006] A drive mechanism is provided on the lower side of the vibrating screen frame, and a linkage mechanism is provided between the drive mechanism and the dispersing rod. A dust inlet is provided on one side of the feed hopper, and a dust collection component is fixedly connected to the inner wall of the dust inlet.

[0007] Optionally, the drive mechanism includes a mounting block fixedly connected to the lower side of the vibrating screen frame, a drive motor fixedly connected to one side of the mounting block, a drive rod fixedly connected to the output end of the drive motor, and a crank block fixedly connected to the drive rod.

[0008] Optionally, the linkage mechanism includes a drive sprocket fixedly connected to the drive rod, a driven sprocket fixedly connected to one end of the disintegrating rod, and a chain disposed on the drive sprocket and the driven sprocket.

[0009] Optionally, the dust removal assembly includes an assembly frame fixedly connected to the inner wall of the dust inlet, a pull-out frame fixedly connected to the inner wall of the assembly frame, filter screens fixedly connected to both sides of the pull-out frame, and an exhaust fan fixedly connected to one side of the assembly frame.

[0010] Optionally, one side of the vibrating screen frame is rotatably fitted with two straightening wheels, and the two straightening wheels are in contact with the chain.

[0011] Optionally, the inner wall of the feed hopper is fixedly connected to two guide plates, and the adjacent sides of the two guide plates are both set in an inclined shape.

[0012] Optionally, inclined plates are fixedly connected to the upper side of both the vibrating screen frame and the screening screen, and a discharge port is fixedly connected to one side of each inclined plate. The two inclined plates are arranged in opposite directions.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. This utility model, by setting up a drive mechanism, a linkage mechanism, a striking plate, and other components, can realize the use of the power of the drive mechanism to drive the dispersing rod and the striking plate through the linkage mechanism. The rotation of the striking plate can break up the lumpy grain, prevent the lumps from affecting the screening effect, avoid screening errors caused by lumps, improve screening accuracy, and enable the screen to accurately distinguish the true size of the material particles.

[0015] 2. By setting up a dust removal component, this utility model can draw air through the exhaust fan in the storage component and collect dust using a filter screen. It can adsorb the dust generated when feeding materials and materials fall onto the screening screen, improve the working environment, protect the health of operators, and reduce the damage of dust to equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the overall three-dimensional cross-section of the embodiments of this application;

[0018] Figure 3 This is a schematic diagram of the linkage mechanism connection in the embodiments of this application;

[0019] Figure 4 This is a rear-view stereoscopic structural diagram of an embodiment of this application.

[0020] Reference numerals: 1. Base; 2. Spring; 3. Vibrating screen frame; 4. Screening mesh; 5. Feed hopper; 6. Dispersing rod; 7. Striking plate; 8. Drive mechanism; 801. Mounting block; 802. Drive motor; 803. Drive rod; 804. Crank block; 9. Linkage mechanism; 901. Drive sprocket; 902. Driven sprocket; 903. Chain; 10. Dust inlet; 11. Dust removal assembly; 111. Assembly frame; 112. Pull-out frame; 113. Filter screen; 114. Exhaust fan; 12. Straightening wheel; 13. Guide plate; 14. Inclined plate; 15. Discharge port. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0022] This application discloses a vibrating sieve device for grain screening. For example... Figure 1-4 As shown, the device includes a base 1, with multiple springs 2 fixedly connected to the upper side of the base 1, a vibrating screen frame 3 fixedly connected to the upper side of the multiple springs 2, a screening screen 4 fixedly connected to the upper side of the vibrating screen frame 3, a feed hopper 5 fixedly connected to the upper side of the vibrating screen frame 3, a dispersing rod 6 rotatably fitted to the inner wall of the feed hopper 5, and multiple striking plates 7 fixedly connected to the dispersing rod 6.

[0023] Please see Figure 3 Two tensioning wheels 12 are rotatably fitted on one side of the vibrating screen frame 3. The two tensioning wheels 12 are in contact with the chain 903. The tensioning wheels 12 keep the chain 903 taut at all times. During the vibration of the equipment, the chain 903 will not loosen and lose teeth, thus ensuring transmission stability.

[0024] Please see Figure 2 Two guide plates 13 are fixedly connected to the inner wall of the feed hopper 5. The adjacent sides of the two guide plates 13 are both set in an inclined position. The guide plates 13 can be used to guide the internal material of the feed hopper 5. The inclined setting can facilitate the flow of material.

[0025] Please see Figure 2An inclined plate 14 is fixedly connected to the upper side of both the vibrating screen frame 3 and the screening screen 4. A discharge port 15 is fixedly connected to one side of each inclined plate 14. The two inclined plates 14 are arranged in opposite directions. Through the inclined plate 14, larger materials on the upper side of the screening screen 4 can be discharged to one side. The other inclined plate 14 is arranged in opposite directions, which can discharge smaller materials from the other side, so that different materials can be discharged to different degrees.

[0026] A drive mechanism 8 is provided on the lower side of the vibrating screen frame 3. A linkage mechanism 9 is provided between the drive mechanism 8 and the dispersing rod 6. A dust inlet 10 is provided on one side of the feed hopper 5. A dust removal component 11 is fixedly connected to the inner wall of the dust inlet 10.

[0027] Please see Figure 3 The drive mechanism 8 includes a mounting block 801 fixedly connected to the lower side of the vibrating screen frame 3, a drive motor 802 fixedly connected to one side of the mounting block 801, a drive rod 803 fixedly connected to the output end of the drive motor 802, and a crank block 804 fixedly connected to the drive rod 803. The drive motor 802 drives the drive rod 803 inside the mounting block 801 to rotate, which in turn drives the crank block 804 to rotate, thereby enabling the vibrating screen frame 3 to swing and vibrate.

[0028] Please see Figure 3 The linkage mechanism 9 includes a drive sprocket 901 fixedly connected to the drive rod 803, a driven sprocket 902 fixedly connected to one end of the disintegrating rod 6, and a chain 903 set on the drive sprocket 901 and the driven sprocket 902. The chain 903 engages with the drive sprocket 901 and the driven sprocket 902, thereby enabling the drive rod 803 to drive the disintegrating rod 6 and the striking plate 7 simultaneously. By utilizing the power of the existing drive mechanism 8, no additional motor is needed to drive the disintegrating rod 6, resulting in a certain degree of energy saving.

[0029] Please see Figure 2 The dust removal assembly 11 includes an assembly frame 111 fixedly connected to the inner wall of the dust inlet 10, a pull-out frame 112 fixedly connected to the inner wall of the assembly frame 111, filter screens 113 fixedly connected to both sides of the pull-out frame 112, and an exhaust fan 114 fixedly connected to one side of the assembly frame 111. The exhaust fan 114 draws air into the assembly frame 111, creating a negative pressure inside the assembly frame 111, thereby drawing in the gas. There are two filter screens 113, namely a coarse filter and a fine filter. The fine filter is used to filter the input end of the exhaust fan 114, and the coarse filter is used to filter grains, but not dust.

[0030] The implementation principle of a vibrating screening device for grain screening in this application embodiment is as follows: When in use, first move the base 1 to a suitable position, then turn on the power. During screening, start the drive motor 802 to drive the drive rod 803 and crank block 804 to rotate. The eccentric movement of the crank block 804 causes the vibrating screen frame 3 to vibrate under the support of the spring 2. When the grain is poured into the feed hopper 5, it falls onto the screening screen 4, so that the grain is vibrated and screened on the screening screen 4.

[0031] During the driving process, when the drive rod 803 rotates, the drive sprocket 901 rotates accordingly, and then drives the driven sprocket 902 to rotate through the chain 903. This enables the dispersing rod 6 to be driven during the screening process. During the feeding process, the grain enters from the feed hopper 5, and the dispersing rod 6 rotates at high speed. The striking plate 7 on the dispersing rod 6 breaks up the lumpy grain to prevent lumps from affecting the screening effect and avoid screening errors caused by lumps. This allows the screen to accurately distinguish the true size of the material particles and improves the screening accuracy.

[0032] When feeding materials, the exhaust fan 114 can be started to draw air through the dust inlet 10, and then the dust will pass through the filter screen 113 and enter the inside of the pull-out frame 112 for collection. This can achieve the adsorption of dust from feeding materials and materials falling onto the screening screen 4, improve the working environment, protect the health of operators, and reduce the damage of dust to the equipment.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vibrating sieve device for grain screening, comprising a base (1), characterized in that: Multiple springs (2) are fixedly connected to the upper side of the base (1), and a vibrating screen frame (3) is fixedly connected to the upper side of the multiple springs (2). A screening screen (4) is fixedly connected to the upper side of the vibrating screen frame (3), and a feeding hopper (5) is fixedly connected to the upper side of the vibrating screen frame (3). A dispersing rod (6) is rotatably fitted to the inner wall of the feeding hopper (5), and multiple striking plates (7) are fixedly connected to the dispersing rod (6). A drive mechanism (8) is provided on the lower side of the vibrating screen frame (3), and a linkage mechanism (9) is provided between the drive mechanism (8) and the dispersing rod (6). A dust inlet (10) is provided on one side of the feed hopper (5), and a dust removal component (11) is fixedly connected to the inner wall of the dust inlet (10).

2. The vibrating sieve device for grain screening according to claim 1, characterized in that: The drive mechanism (8) includes a mounting block (801) fixedly connected to the lower side of the vibrating screen frame (3), a drive motor (802) fixedly connected to one side of the mounting block (801), a drive rod (803) fixedly connected to the output end of the drive motor (802), and a crank block (804) fixedly connected to the drive rod (803).

3. The vibrating sieve device for grain screening according to claim 2, characterized in that: The linkage mechanism (9) includes a drive sprocket (901) fixedly connected to the drive rod (803), a driven sprocket (902) fixedly connected to one end of the disintegrating rod (6), and a chain (903) disposed on the drive sprocket (901) and the driven sprocket (902).

4. The vibrating sieve device for grain screening according to claim 1, characterized in that: The dust removal assembly (11) includes an assembly frame (111) fixedly connected to the inner wall of the dust inlet (10), a pull-out frame (112) fixedly connected to the inner wall of the assembly frame (111), a filter screen (113) fixedly connected to both sides of the pull-out frame (112), and an exhaust fan (114) fixedly connected to one side of the assembly frame (111).

5. A vibrating sieve device for grain screening according to claim 3, characterized in that: Two straightening wheels (12) are rotatably fitted on one side of the vibrating screen frame (3), and the two straightening wheels (12) are in contact with the chain (903).

6. The vibrating sieve device for grain screening according to claim 1, characterized in that: The inner wall of the feed hopper (5) is fixedly connected to two guide plates (13), and the adjacent sides of the two guide plates (13) are both set in an inclined shape.

7. The vibrating sieve device for grain screening according to claim 1, characterized in that: An inclined plate (14) is fixedly connected to the upper side of both the vibrating screen frame (3) and the screening screen (4). A discharge port (15) is fixedly connected to one side of each inclined plate (14). The two inclined plates (14) are arranged in opposite directions.

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