A high-efficiency vibrating screen device

Abstract

The application provides a high-efficiency vibrating screen device, which comprises a rack, a vibrating screen body and a driving mechanism. The front and rear ends of the two sides of the vibrating screen frame of the vibrating screen body are respectively provided with front swing arms and rear swing arms, which are connected with the rack. A screen plate with a plurality of screen holes is installed on the screen frame, and a plurality of rows of large and small sawtooth plates with different heights are arranged along the length direction of the screen plate. The driving mechanism is composed of a vibrating main shaft, a belt pulley mounting shaft installed on the rack through a bearing with a seat and a connecting rod. The belt pulley mounting shaft is provided with a vibrating screen sprocket at one end and an eccentric turntable at the other end. The two ends of the connecting rod are respectively rotatably connected with the eccentric shaft of the eccentric turntable and the vibrating main shaft. The application has the advantages of better cleaning effect, sawtooth plate design for strengthening the processing of bract leaves and improving the screening precision, lower energy consumption, simple and compact structure of the driving mechanism, reduction of transmission links, simple structure, low maintenance cost, stable and reliable operation, reduction of vibration noise and ensuring smooth cleaning.

Description

Technical Field

[0001] This application relates to the field of agricultural machinery technology, and more specifically to a vibrating screen device for efficient cleaning. Background Technology

[0002] Corn plays a vital role in human production and daily life, serving as an important food, feed, industrial, and energy source. As global agricultural production shifts from traditional manual labor to mechanization and intelligentization, and from scattered small-scale farming to large-scale, specialized, and collective operations, science and technology have become key factors driving this rapid transformation.

[0003] With the continuous advancement of agricultural production technology, people's demands for corn harvesting machinery are increasing, and there is an urgent need for efficient and convenient corn harvesting methods. However, traditional corn harvester kernel cleaning mainly relies on simple mechanical screening, which has many problems. The cleaning effect is unsatisfactory; some equipment cannot effectively separate impurities, resulting in kernels still containing a significant amount of impurities after cleaning. Energy consumption is high; some cleaning equipment consumes a lot of energy during operation. The structure is complex, and maintenance costs are high; existing corn kernel cleaning devices are complex in design, resulting in high maintenance and repair costs, increasing the burden on users. These problems seriously affect the performance and efficiency of corn harvesting machinery, hindering the development of the corn harvesting industry. Therefore, there is an urgent need for a cleaning device that offers good cleaning effect, low energy consumption, simple structure, and low maintenance costs. Utility Model Content

[0004] To overcome the above-mentioned technical deficiencies, this application provides a vibrating screen device for efficient grain cleaning. This overcomes the problems of unsatisfactory cleaning effect, high energy consumption, complex structure, and high maintenance costs in traditional corn harvester grain cleaning, achieving efficient and precise grain cleaning, reducing production costs, and improving the overall performance of corn harvesting machinery.

[0005] This application provides a vibrating screen device for high-efficiency cleaning, comprising:

[0006] frame;

[0007] A vibrating screen body includes a vibrating screen frame. Front swing arms and rear swing arms are rotatably provided on the front and rear ends of both sides of the vibrating screen frame. The ends of the front swing arms and rear swing arms away from the vibrating screen frame are rotatably connected to the machine frame. A screen plate is installed on the vibrating screen frame. The screen plate is provided with a number of screen holes. The screen plate is provided with a number of rows of large serrated plates and small serrated plates along the length direction.

[0008] The drive mechanism is used to drive the vibrating screen body to swing back and forth periodically.

[0009] Preferably, the drive mechanism includes:

[0010] The vibratory spindle is mounted at the bottom of the frame;

[0011] A pulley mounting shaft is rotatably mounted on the frame via a bearing seat. One end of the pulley mounting shaft is connected to a vibrating screen sprocket, and an eccentric turntable is provided at the end of the pulley mounting shaft away from the vibrating screen sprocket.

[0012] The connecting rod has one end rotatably connected to the eccentric shaft of the eccentric turntable, and the other end rotatably sleeved on the vibrating main shaft.

[0013] When the sprocket of the vibrating screen drives the belt pulley mounting shaft to rotate, the belt pulley mounting shaft drives the eccentric turntable to rotate, and the eccentric turntable drives the connecting rod to swing back and forth, thereby causing the entire vibrating screen body to swing back and forth periodically.

[0014] Preferably, the bottom of the vibrating screen frame is provided with guide plates on both sides, and a discharge port is formed between the two guide plates.

[0015] Preferably, the sieve plate is a fish scale sieve plate, and the sieve holes on the sieve plate are distributed and structured in a fish scale pattern.

[0016] Preferably, one end of the front swing arm and the rear swing arm is rotatably connected to the frame via a rubber seat, and the other end of the front swing arm and the rear swing arm is rotatably connected to the vibrating screen frame via a bearing.

[0017] Preferably, a support bearing for mounting the vibrating main shaft is provided below the vibrating screen frame.

[0018] Preferably, baffles are provided on all four sides of the sieve plate.

[0019] Compared with the prior art, this application has the following significant advantages:

[0020] 1. Superior Cleaning Effect: The large and small serrated plates of this application are arranged in an orderly and staggered manner with varying heights, which increases the contact area between the husks and the serrations, strengthens the squeezing and tearing of the husks, and more thoroughly separates the grains. The combination of high and low serrations with the fish-scale screen plate design increases the screening area, changes the material movement trajectory, and makes it easier for qualified grains to pass through the screen holes, while impurities are effectively intercepted, significantly improving screening accuracy and quality.

[0021] 2. Lower energy consumption: The drive mechanism of this application adopts a combination of a vibrating main shaft, a pulley mounting shaft, and a connecting rod, which has a simple and compact structure. The eccentric turntable is driven by a sprocket, which causes the connecting rod to swing and thus drive the vibrating screen body. This reduces transmission links and energy loss, thereby reducing energy consumption while ensuring cleaning effect.

[0022] 3. Simple structure and low maintenance cost: This application has a simple structure and reasonable connection of each component. The rubber seat buffers and absorbs shock, reducing impact on the frame; the bearings ensure smooth rotation and extend the service life of the components; the support bearings improve the stability of the vibrating spindle and the reliability of transmission, reducing the failure rate and maintenance costs.

[0023] 4. Stable and reliable operation: This application effectively improves the operational stability of the device by reasonably setting up components, reducing vibration and noise, and ensuring the smooth progress of the cleaning process. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a high-efficiency vibrating screen device for cleaning according to this application.

[0025] Figure 2 This is a structural schematic diagram of the vibrating screen frame of this application.

[0026] Figure 3 This is a schematic diagram of the bottom structure of the vibrating screen frame of this application.

[0027] Reference numerals in the attached diagram: 1. Vibrating screen frame; 2. Baffle plate; 3. Rubber seat; 4. Front swing arm; 5. Bearing; 6. Vibrating main shaft; 7. Rear swing arm; 8. Connecting rod; 9. Eccentric turntable; 10. Belt pulley mounting shaft; 11. Vibrating screen sprocket; 12. Bearing with seat; 13. Screen plate; 14. Large serrated plate; 15. Small serrated plate; 16. Support bearing; 17. Guide inclined plate; 18. Frame. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] As attached Figure 1 -Appendix Figure 3As shown, this application provides a high-efficiency vibrating screen device, comprising: a frame 18; a vibrating screen body, including a vibrating screen frame 1, with a front swing arm 4 and a rear swing arm 7 rotatably mounted on the front and rear ends of both sides of the vibrating screen frame 1, the ends of the front swing arm 4 and the rear swing arm 7 away from the vibrating screen frame 1 being rotatably connected to the frame 18; a screen plate 13 mounted on the vibrating screen frame 1, the screen plate 13 having a plurality of screen holes, and the screen plate 13 having a plurality of rows of large serrated plates 14 and small serrated plates 15 along its length; and a driving mechanism for driving the vibrating screen body to periodically swing back and forth. The large serrated plates 14 and small serrated plates 15 are arranged in an orderly staggered manner, and the serration height of the large serrated plates 14 is higher than that of the small serrated plates 15. This arrangement greatly increases the contact area between the corn husks and the serrations. As the corn husks move across the vibrating screen, more of the husks come into contact with the saw teeth, enhancing the squeezing and tearing action of the saw teeth on the husks. This helps to separate the corn kernels more thoroughly from the husks, thus improving threshing efficiency. Secondly, the varying heights of the saw teeth create a unique separation mechanism. During vibration, the saw teeth at different heights exert different forces on the corn kernels, husks, and impurities, promoting better separation. Corn kernels that meet the size requirements can smoothly pass through the sieve holes of the screen plate 13, while husks and impurities are effectively intercepted, significantly improving the accuracy and quality of the screening.

[0030] To achieve the periodic back-and-forth oscillation of the vibrating screen body, the drive mechanism of this application adopts a unique design. Specifically, the drive mechanism includes a vibrating main shaft 6, a pulley mounting shaft 10, and a connecting rod 8.

[0031] The vibrating main shaft 6 is mounted at the bottom of the frame 18, serving as one of the supporting foundations for the entire drive mechanism. The pulley mounting shaft 10 is rotatably mounted on the frame 18 via a bearing 12, with one end connected to the vibrating screen sprocket 11 and the other end equipped with an eccentric turntable 9. One end of the connecting rod 8 is rotatably connected to the eccentric shaft of the eccentric turntable 9, and the other end is rotatably sleeved on the vibrating main shaft 6.

[0032] During operation, the drive mechanism of the vibrating screen sprocket 11 is existing technology and is therefore not shown in the figure. Specifically, the drive motor rotates the output sprocket, which in turn drives the vibrating screen sprocket 11 via a chain. When the vibrating screen sprocket 11 drives the pulley mounting shaft 10 to rotate, the pulley mounting shaft 10 simultaneously drives the eccentric turntable 9 to rotate. Since the connecting rod 8 is rotatably connected to the eccentric shaft of the eccentric turntable 9, the rotation of the eccentric turntable 9 drives the connecting rod 8 to reciprocate. The other end of the connecting rod 8 is rotatably mounted on the vibrating main shaft 6, so the reciprocating oscillation of the connecting rod 8 further drives the entire vibrating screen body to periodically oscillate back and forth around the vibrating main shaft 6. This drive method is simple in structure, stable in operation, and provides reliable oscillation power to the vibrating screen body, ensuring the smooth progress of the cleaning process.

[0033] On both sides of the bottom of the vibrating screen frame 1, this application provides guide ramps 17, forming a discharge port between the two guide ramps 17. After the corn kernels are cleaned by the screen plate 13, they slide down along the guide ramps 17 towards the discharge port. The guide ramps 17 not only effectively guide the direction of the corn kernels' fall, preventing the kernels from accumulating at the bottom of the vibrating screen frame 1, but also improve the efficiency of the discharge, allowing the cleaned corn kernels to be collected quickly and orderly, further enhancing the working efficiency of the entire cleaning device.

[0034] The sieve plate 13 of this application adopts a fish-scale sieve plate design, with sieve holes arranged and constructed in a fish-scale pattern. This unique sieve hole structure has many advantages. On the one hand, the fish-scale pattern of the sieve holes increases the screening area of ​​the sieve plate 13, improving screening efficiency; on the other hand, the fish-scale structure can, to a certain extent, alter the movement trajectory of corn kernels and impurities, making it easier for qualified corn kernels to pass through the sieve holes and fall, while impurities are effectively intercepted, thereby improving the precision and quality of screening. Compared with traditional sieve plates, the fish-scale sieve plate has a significant improvement in cleaning effect, better meeting the needs of corn harvesting machinery for efficient cleaning.

[0035] The front swing arm 4 and the rear swing arm 7 play a key role in the connection between the vibrating screen body and the frame 18. Specifically, one end of the front swing arm 4 and the rear swing arm 7 is rotatably connected to the frame 18 through the rubber seat 3, and the other end is rotatably connected to the vibrating screen frame 1 through the bearing 5.

[0036] The rubber seat 3 provides cushioning and shock absorption, effectively reducing the impact of the vibrating screen body on the frame 18 during oscillation, lowering equipment vibration and noise, and improving operational stability. The bearing 5 ensures smooth rotation between the front swing arm 4 and the rear swing arm 7 and the vibrating screen frame 1, reducing friction and extending the service life of the swing arms and the vibrating screen frame 1. This connection method ensures flexible oscillation of the vibrating screen body while improving the reliability and durability of the equipment.

[0037] Below the vibrating screen frame 1, this application provides a support bearing 16 for mounting the vibrating main shaft 6. The addition of the support bearing 16 has several important functions. First, this support bearing 16 provides an additional support point for the vibrating main shaft 6, reducing the load on individual bearings. During the oscillation of the vibrating screen body, the vibrating main shaft 6 needs to withstand significant forces and torques. Without sufficient support, it is prone to bending deformation or even shaft breakage. The addition of the support bearing 16 effectively distributes the load and improves the service life of the vibrating main shaft 6. Second, the intermediate support bearing 16 limits the radial runout and axial movement of the vibrating main shaft 6. Radial runout and axial movement cause instability in the motion trajectory of the vibrating main shaft 6, affecting the fitting accuracy of transmission components and thus reducing transmission reliability. The presence of the support bearing 16 makes the motion trajectory of the vibrating main shaft 6 more stable, ensuring a tight fit between transmission components and improving the transmission efficiency and reliability of the entire drive mechanism.

[0038] Baffles 2 are provided around the screen plate 13. The main function of baffles 2 is to prevent corn kernels and impurities from falling off the edges of the screen plate 13 during the oscillation of the vibrating screen. During the cleaning process, corn kernels and impurities will separate and move on the screen plate 13. Without the obstruction of baffles 2, some kernels and impurities may fall off the edges of the screen plate 13, resulting in reduced cleaning efficiency and increased difficulty of subsequent cleaning work. The baffles 2 can effectively avoid this situation, ensuring that corn kernels and impurities are effectively cleaned on the screen plate 13, thereby improving the quality and efficiency of cleaning.

[0039] In summary, the high-efficiency vibrating screen device provided in this application effectively solves the problems existing in the grain cleaning of traditional corn harvesters through the unique design and optimization of the above embodiments. It has the advantages of good cleaning effect, strong adaptability, low energy consumption, simple structure and low maintenance cost, and provides strong technical support for the development of corn harvesting machinery.

[0040] The above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope defined by the claims of this application.

Claims

1. A vibrating screen device for high-efficiency cleaning, characterized in that, include: Rack (18); The vibrating screen body includes a vibrating screen frame (1), with a front swing arm (4) and a rear swing arm (7) rotatably provided at the front and rear ends of both sides of the vibrating screen frame (1). The ends of the front swing arm (4) and the rear swing arm (7) away from the vibrating screen frame (1) are rotatably connected to the frame (18). A screen plate (13) is installed on the vibrating screen frame (1), and a number of screen holes are provided on the screen plate (13). The screen plate (13) is provided with a number of rows of large serrated plates (14) and small serrated plates (15) along the length direction. The drive mechanism is used to drive the vibrating screen body to swing back and forth periodically.

2. The high-efficiency cleaning vibrating screen device according to claim 1, characterized in that, The drive mechanism includes: The vibrating spindle (6) is mounted at the bottom of the frame (18); A pulley mounting shaft (10) is rotatably mounted on a frame (18) via a bearing (12). One end of the pulley mounting shaft (10) is connected to a vibrating screen sprocket (11), and an eccentric turntable (9) is provided at the end of the pulley mounting shaft (10) away from the vibrating screen sprocket (11). The connecting rod (8) has one end rotatably connected to the eccentric shaft of the eccentric turntable (9), and the other end is rotatably sleeved on the vibrating main shaft (6). When the vibrating screen sprocket (11) drives the pulley mounting shaft (10) to rotate, the pulley mounting shaft (10) drives the eccentric turntable (9) to rotate, and the eccentric turntable (9) drives the connecting rod (8) to swing back and forth, thereby driving the entire vibrating screen body to swing back and forth periodically.

3. The high-efficiency cleaning vibrating screen device according to claim 1, characterized in that, The vibrating screen frame (1) is provided with guide plates (17) on both sides of the bottom, and a discharge port is formed between the guide plates (17) on both sides.

4. The high-efficiency cleaning vibrating screen device according to claim 1, characterized in that, The sieve plate (13) is a fish scale sieve plate, and the sieve holes on the sieve plate (13) are distributed and structured in a fish scale pattern.

5. The high-efficiency cleaning vibrating screen device according to claim 1, characterized in that, One end of the front swing arm (4) and the rear swing arm (7) is rotatably connected to the frame (18) via a rubber seat (3), and the other end of the front swing arm (4) and the rear swing arm (7) is rotatably connected to the vibrating screen frame (1) via a bearing (5).

6. The high-efficiency cleaning vibrating screen device according to claim 1, characterized in that, The vibrating screen frame (1) is provided with a support bearing (16) for mounting the vibrating main shaft (6) at its lower part.

7. The high-efficiency vibrating screen device for cleaning according to claim 1, characterized in that, The sieve plate (13) is provided with baffles (2) on all four sides.

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