A multi-stage vibrating screening device for miscellaneous grains

Abstract

The utility model relates to the technical field of miscellaneous grain screening, in particular to a multi-stage vibration screening device for miscellaneous grains. The utility model provides such a multi-stage vibration screening device for miscellaneous grains, which includes a silo body, a controller, a feeding hopper, a distributing plate and a driving motor, etc. The controller is installed on the front side of the silo body. The feeding hopper is connected and communicated with the upper part inside the silo body. The distributing plate is rotatably connected to the upper part inside the silo body. The distributing plate is in the shape of a "rice" character, and the distributing plate is located between the feeding hopper and the internal inlet of the silo body. The driving motor is installed on the upper part of the front side of the silo body, and the output shaft of the driving motor is connected to the distributing plate. By setting the "rice" character-shaped distributing plate, the utility model realizes the uniform dispersion of miscellaneous grains before entering the sieve surface, and through the guiding effect of the guiding plate, the falling miscellaneous grains are uniformly dispersed to the entire upper surface of the sieve mesh, effectively solving the problem of material accumulation caused by concentrated feeding of traditional screening equipment, and improving the uniformity and processing efficiency of screening.

Description

Technical Field

[0001] The utility model relates to the technical field of miscellaneous grain screening, in particular to a multi-stage vibration screening device for miscellaneous grains. Background Art

[0002] In grain processing, agricultural product sorting and the food industry, miscellaneous grains (such as millet, sorghum, mung beans, red beans, buckwheat, oats, etc.) have different particle sizes and various impurities (including stones, straws, dust, debris, etc.). Before entering deep processing or packaging, they must be subjected to efficient and precise screening. The purpose of screening is to classify by particle size, remove impurities, and improve the purity and commercial value of products.

[0003] At present, most screening devices mainly work in a linear vibration or circular vibration mode. During actual operation, due to the limitations of the vibration mode, the movement trajectory of materials on the screen surface is relatively single, and problems such as accumulation and uneven flow are likely to occur. Especially when the feeding is uneven, the materials will concentrate in a certain area of the screen surface, resulting in a reduced utilization rate of the effective screening area and affecting the particle size accuracy and screening efficiency of the final product.

[0004] Therefore, a multi-stage vibration screening device for miscellaneous grains needs to be designed. Content of the Utility Model

[0005] In order to overcome the shortcomings of the existing screening devices, such as a single feeding process and easy material accumulation and uneven distribution on the screen surface, the utility model provides a multi-stage vibration screening device for miscellaneous grains.

[0006] The technical solution is as follows: A multi-stage vibration screening device for miscellaneous grains includes a bin body, a controller, a feeding hopper, a distributing plate, a driving motor, a guiding plate, a torsion spring, a screen mesh, an elastic member, a top rod, and a vibrating motor. The controller is installed on the front side of the bin body. The feeding hopper is connected and communicated with the upper part inside the bin body. The distributing plate is rotatably connected to the upper part inside the bin body. The distributing plate is in a "rice" shape and is located between the feeding hopper and the internal inlet of the bin body. The driving motor is installed on the upper part of the front side of the bin body, and the output shaft of the driving motor is connected to the distributing plate. The inclined guiding plates are symmetrically and rotatably arranged on the left and right sides of the upper part inside the bin body, and torsion springs are connected between the rotating shafts of the guiding plates and the bin body. A plurality of screen meshes are slidably arranged inside the bin body. The screen meshes are arranged longitudinally, and two adjacent screen meshes are connected to each other. The mesh number of each screen mesh increases sequentially from top to bottom. Elastic members are connected between the screen meshes and the bin body. Two top rods are fixedly connected to the front and rear sides of the uppermost screen mesh, and the top rods are abutted against the adjacent guiding plates. The vibrating motor is installed below the lowermost screen mesh. Among them, the controller is electrically connected to the driving motor and the vibrating motor.

[0007] Furthermore, it also includes a connecting frame, a pin, and cleaning balls. The connecting frame is slidably provided in the lower part of the bottom screen, and a pin is inserted between the connecting frame and the screen. Multiple cleaning balls are placed inside the connecting frame, and the cleaning balls are located below the screen.

[0008] Furthermore, it also includes a vacuum cleaner and a dust collection frame. Vacuum cleaners are installed on the upper left and right sides of the chamber, and dust collection frames are fixed to the left and right sides of the outside of the chamber. The inside of the dust collection frame is connected to the vacuum cleaner, and the vacuum cleaner is electrically connected to the controller.

[0009] Furthermore, it also includes a hopper door, bolts, and a cover plate. The hopper door is symmetrically and rotatably connected to the left and right sides of the front part of the hopper body. A bolt is threaded between the lower parts of the two hopper doors. A cover plate is installed on the upper part of the hopper body, and the cover plate is located directly above the discharge hopper.

[0010] Furthermore, it also includes foot pads, with multiple foot pads located on the lower part of the compartment.

[0011] Furthermore, all tennis balls are made of elastic rubber.

[0012] Beneficial effects:

[0013] 1. This utility model achieves uniform dispersion of grains before they enter the screen by setting up a "rice" shaped material distribution plate. Through the guiding action of the guide plate, the falling grains are evenly dispersed to the entire upper surface of the screen, effectively solving the problem of material accumulation caused by concentrated feeding in traditional screening equipment, and improving the uniformity and processing efficiency of screening.

[0014] 2. This utility model sets a cleaning ball in the lower part of the fine screen with the smallest aperture, and uses the bouncing and impacting action of the cleaning ball during vibration to automatically remove the blockage in the screen holes, effectively preventing fine powder from agglomerating or the screen from clogging, extending the continuous operation time, and improving the screening stability. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the components of this utility model, including the hopper, the distribution plate, and the guide plate.

[0017] Figure 3 This is a three-dimensional structural diagram of the screen, elastic element, and top rod of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the connecting frame, pin, and cleaning ball of this utility model.

[0019] Reference numerals: 1 - storage body, 101 - controller, 2 - blanking hopper, 3 - distributing plate, 4 - driving motor, 5 - material guiding plate, 6 - torsion spring, 7 - screen mesh, 8 - elastic member, 9 - ejector rod, 10 - vibration motor, 11 - connecting frame, 12 - pin, 13 - cleaning ball, 14 - vacuum cleaner, 15 - dust collection box, 16 - storage door, 17 - bolt, 18 - foot pad, 19 - cover plate. Detailed implementation manners

[0020] Example: A multi-stage vibration screening device for miscellaneous grains, as Figures 1-4 shown, includes a storage body 1, a controller 101, a blanking hopper 2, a distributing plate 3, a driving motor 4, a material guiding plate 5, a torsion spring 6, a screen mesh 7, an elastic member 8, an ejector rod 9 and a vibration motor 10. A controller 101 is installed on the front side of the storage body 1. The upper part inside the storage body 1 is connected and communicated with a blanking hopper 2. The upper part inside the storage body 1 is rotatably connected with a distributing plate 3. The distributing plate 3 is in a "rice" shape and is located at the inlet of the blanking hopper 2 and the inside of the storage body 1. The upper part of the front side of the storage body 1 is installed with a driving motor 4 by means of screws. The output shaft of the driving motor 4 is connected with the distributing plate 3. The upper part of the inside of the storage body 1 on the left and right sides is symmetrically and rotatably provided with inclined material guiding plates 5. Torsion springs 6 are connected between the rotating shafts of the material guiding plates 5 and the storage body 1. A plurality of screen meshes 7 are slidably arranged inside the storage body 1. The screen meshes 7 are arranged longitudinally, and two adjacent screen meshes 7 are connected to each other. The mesh number of each screen mesh 7 increases sequentially from top to bottom. Elastic members 8 are connected between the screen meshes 7 and the storage body 1. Two ejector rods 9 are fixedly connected to the front and rear sides of the uppermost screen mesh 7. The ejector rods 9 are abutted against the adjacent material guiding plates 5. A vibration motor 10 is installed below the lowermost screen mesh 7. Among them, the controller 101 is electrically connected to the driving motor 4 and the vibration motor 10.

[0021] As Figure 2 , Figure 3 and Figure 4 shown, it further includes a connecting frame 11, a pin 12 and a cleaning ball 13. A connecting frame 11 is slidably arranged in the lower part inside the lowermost screen mesh 7. A pin 12 is inserted between the connecting frame 11 and this screen mesh 7. A plurality of cleaning balls 13 are placed inside the connecting frame 11. The cleaning balls 13 are located below the screen mesh 7 and are all made of elastic rubber.

[0022] As Figure 1 and Figure 2 shown, it further includes a vacuum cleaner 14 and a dust collection box 15. Vacuum cleaners 14 are installed on the left and right sides of the upper part inside the storage body 1. Dust collection boxes 15 are fixedly connected to the left and right sides outside the storage body 1. The inside of the dust collection box 15 is communicated with the vacuum cleaner 14, and the vacuum cleaners 14 are electrically connected to the controller 101.

[0023] As Figure 1As shown, it also includes a hopper door 16, bolts 17 and a cover plate 19. The hopper body 1 is symmetrically connected to the left and right sides of the front part of the hopper body 1. Bolts 17 are threaded between the lower parts of the two hopper doors 16. The upper part of the hopper body 1 is covered with a cover plate 19, which is located directly above the discharge hopper 2.

[0024] like Figure 1 and Figure 3 As shown, it also includes foot pads 18. Multiple foot pads 18 are provided on the lower part of the chamber body 1, which enhances the stability of the whole machine during operation and effectively reduces the impact of equipment vibration on the surrounding environment and reduces noise.

[0025] In actual use, the user puts the grains to be screened (such as millet, sorghum, mung beans, red beans, buckwheat, etc.) into the hopper 2 by opening the cover 19 on the top of the bin 1. The grains fall into the bin 1 under gravity. To avoid the material from accumulating in a certain area of ​​the screen surface, the operator needs to use the controller 10. 1. Start the drive motor 4 and the vibration motor 10. The drive motor 4 drives the "rice" shaped material distribution plate 3 to rotate. During the rotation, the multi-directional radial structure of the material distribution plate 3 will disperse some of the falling grains onto the inclined guide plates 5 on both sides, and finally fall onto the entire upper surface of the screen 7, so as to achieve uniform feeding distribution. At the same time, the vibration motor 10 is installed at the bottom of the lowest screen 7. Its vibration is transmitted upward through the rigid connection between multiple screens 7, so that all screens 7 vibrate synchronously. The top rods 9 on the front and rear sides of the uppermost screen 7 periodically hit the inclined guide plates 5 with the vibration of the screen 7, and make them swing slightly. This swing effect can further disturb the falling material, further achieve uniform material distribution, prevent it from stagnating or accumulating, and improve the overall utilization rate of the screen surface.

[0026] Next, the initially dispersed grains fall onto the top screen 7, which has the smallest mesh size and is used to intercept large particles such as stones, straw, and debris. At the same time, under the action of vibration, the grain particles jump and slide irregularly on the screen surface. Small particles gradually pass through the screen holes and fall to the next screen 7, while large particles are trapped in the current layer. The mesh size of each screen 7 increases from top to bottom, forming a multi-level grading structure: the upper layer removes large impurities, the middle layer separates medium-sized grains, and the bottom layer screens fine particles or dust, thereby achieving fine grading of grains and removal of impurities.

[0027] To further improve screening efficiency and equipment cleanliness, vacuum cleaners 14 are installed on the left and right sides inside the hopper 1. The controller 101 controls them to run automatically during the screening process. The vacuum cleaners 14 use negative pressure to promptly suck up the dust and light impurities (such as dust and shell fragments) raised during the screening process and collect them in the external dust collection frame 15, effectively improving the working environment, reducing dust pollution, and protecting the health of operators.

[0028] Finally, after the screening operation is completed, the user can loosen the fastening bolts 17 and open the hopper door 16 to remove each layer of screens 7 in sequence to collect the screened material or to clean and maintain it. The bottom screen 7, due to its smallest aperture, is most susceptible to fine particles and dust, and thus has the highest risk of clogging. Therefore, the cleaning net 13 located inside its connecting frame 11 will bounce synchronously with the screen 7 during the screening vibration, continuously impacting the bottom surface of the screen 7. This impact force effectively prevents fine particles from embedding or adhering to the screen holes, achieving automatic screen cleaning, ensuring unobstructed screen openings, effectively avoiding clogging, and maintaining stable screening efficiency.

Claims

1. A multi-stage vibrating sieving device for miscellaneous grains, characterized in that, It includes a bin body (1), a controller (101), a blanking hopper (2), a distributing plate (3), a driving motor (4), a guiding plate (5), a torsion spring (6), a sieve mesh (7), an elastic member (8), a top rod (9) and a vibration motor (10). The controller (101) is installed on the front side of the bin body (1). The blanking hopper (2) is connected and communicated with the upper part inside the bin body (1). The distributing plate (3) is rotatably connected to the upper part inside the bin body (1). The distributing plate (3) is in a "rice" shape and is located at the blanking hopper (2) and the internal inlet of the bin body (1). The driving motor (4) is installed on the upper part of the front side of the bin body (1). The output shaft of the driving motor (4) is connected to the distributing plate (3). The inclined guiding plates (5) are symmetrically and rotatably arranged on the left and right sides of the upper part inside the bin body (1). Torsion springs (6) are connected between the rotating shafts of the guiding plates (5) and the bin body (1). A plurality of sieve meshes (7) are slidably arranged inside the bin body (1). The sieve meshes (7) are arranged longitudinally, and two adjacent sieve meshes (7) are connected to each other. The mesh number of each sieve mesh (7) increases sequentially from top to bottom. Elastic members (8) are connected between the sieve meshes (7) and the bin body (1). Two top rods (9) are fixedly connected to the front and rear sides of the uppermost sieve mesh (7). The top rods (9) are abutted against the adjacent guiding plates (5). The vibration motor (10) is installed below the lowermost sieve mesh (7). Among them, the controller (101) is electrically connected to the driving motor (4) and the vibration motor (10).

2. The multi-stage vibration screening device for coarse grains according to claim 1, characterized in that, It further includes a connecting frame (11), a plug pin (12) and cleaning balls (13). The connecting frame (11) is slidably arranged in the lower inner part of the lowermost sieve mesh (7). The connecting frame (11) and this sieve mesh (7) are plugged with the plug pin (12). A plurality of cleaning balls (13) are placed inside the connecting frame (11). The cleaning balls (13) are located below the sieve mesh (7).

3. The multi-stage vibration screening device for coarse grains according to claim 2, characterized in that, It further includes a vacuum cleaner (14) and a dust collection frame (15). The vacuum cleaners (14) are installed on the left and right sides of the upper part inside the bin body (1). The dust collection frames (15) are fixedly connected to the left and right sides outside the bin body (1). The inside of the dust collection frame (the 15) is communicated with the vacuum cleaner (14), and the vacuum cleaners (14) are electrically connected to the controller (101).

4. The multi-stage vibration screening device for mixed grains according to claim 3, wherein, It further includes a bin door (16), a bolt (17) and a cover plate (19). The bin doors (16) are symmetrically and rotatably connected to the left and right sides of the front part of the bin body (1). A bolt (17) is threaded between the lower parts of the two bin doors (16). The cover plate (19) is covered on the upper part of the bin body (1). The cover plate (19) is located directly above the blanking hopper (2).

5. The multi-stage vibrating screening device for miscellaneous grains according to claim 4, characterized in that, It further includes foot pads (18). A plurality of foot pads (18) are provided at the lower part of the bin body (1).

6. A multi-stage vibration sifting device for coarse grains according to claim 5, characterized in that, The cleaning balls (13) are all made of elastic rubber.

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