Grain sorting sieve easy to adjust

Abstract

The technical scheme of the utility model discloses an easy-to-adjust grain cleaning sieve, which comprises a sieve frame, sieve pieces, sieve piece shafts, sieve piece adjusting plates and sieve piece adjusting screw rods, the sieve pieces are fixed on the sieve piece shafts, the left and right ends of the sieve piece shafts are rotatably arranged on the sieve frame, the sieve piece shafts are uniformly distributed in the sieve frame, and the sieve piece adjusting plates are arranged on the sieve piece adjusting screw rods. The screen piece adjusting plate and all the screen piece shafts are assembled together, the screen piece adjusting plate drives the screen piece shafts to move, the screen piece adjusting screw rod is installed on the screen frame, the screen piece adjusting screw rod and the screen piece adjusting plate are fixed, and the screen piece adjusting screw rod drives the screen piece adjusting plate to move front and back. The rotation of all the sieve piece rotating shafts is controlled through one sieve piece adjusting plate, so that the angle between the fish scale-shaped sieve pieces and the plane is adjusted, and the cleaning effect of corn kernels is improved.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, specifically relating to an easily adjustable grain cleaning sieve. Background Technology

[0002] With the continuous increase in the working speed of corn harvesting machinery and the increasing feed rate per unit time, the commonly used grain sieve structure can no longer meet the requirements of grain cleaning. The commonly used grain sieve structure is a screen with a fixed circular hole size, and it is impossible to control the screening time of impurity grains by adjusting the angle of the grain sieve pushing the material. Therefore, it will lead to incomplete grain cleaning, resulting in corn kernels being wrapped in corn husks and discharged into the field, causing grain loss.

[0003] Patent CN 113083666 B discloses a variable tilt angle grain screening device, including a frame. A cross-flow blower is installed at the bottom front side of the frame, and a cross-flow suction fan is installed at the top rear side of the frame. A shaking plate and a material baffle are set at the top of the frame. The shaking plate is installed at the top front side of the frame through four sets of mounting parts. The motor of the cross-flow blower is used as the driving source, and the shaking plate and screen plate are driven to shake by the first crank connecting rod and the second crank connecting rod to achieve material conveying and screening. The setting of the material baffle and the cross-flow suction fan can disperse the material feeding and improve the utilization rate of the screen plate. The tilt angle of the screen plate can be adjusted so that the overall screen shape can achieve different postures to adapt to the cleaning of different materials. The screen achieves a low grain output rate, but adjusting the tilt angle of the screen plate requires adjusting the position of the long shaft connecting the screen plates one by one, which is cumbersome and time-consuming. Therefore, there is a need to develop a grain cleaning screen that is easy to adjust the screen plate angle and improves the grain cleaning effect. Utility Model Content

[0004] To address the existing technical problems, this utility model provides an easily adjustable grain cleaning sieve. By controlling the rotation of all sieve shafts through a sieve adjustment plate, the angle between the fish-scale sieve and the plane can be adjusted, thereby improving the cleaning effect of corn kernels.

[0005] The technical solution of this utility model is: an easily adjustable grain cleaning sieve, including a sieve frame, sieve plates, sieve plate shafts, sieve plate adjusting plate and sieve plate adjusting screw. The sieve plates are fixed on the sieve plate shafts, and the left and right ends of the sieve plate shafts are rotatably mounted on the sieve frame. The sieve plate shafts are evenly distributed inside the sieve frame. The sieve plate adjusting plate is assembled with all the sieve plate shafts. The sieve plate adjusting plate drives the sieve plate shafts to move. The sieve plate adjusting screw is mounted on the sieve frame and fixed to the sieve plate adjusting plate. The sieve plate adjusting screw drives the sieve plate adjusting plate to move back and forth.

[0006] Furthermore, the position where the screen shaft connects to the screen adjusting plate is bent downwards to form an installation groove, and the screen adjusting plate is locked in the installation groove.

[0007] Furthermore, the screen plate adjusting plate corresponds to the middle part of the screen plate shaft.

[0008] Furthermore, the screen frame includes a left beam, a right beam, a front beam, and a rear beam. The two ends of the screen plate shaft are mounted on the left and right beams of the screen frame. The screen plate adjusting plate extends from the front beam to the rear beam, and the screen plate adjusting screw is mounted on the rear beam.

[0009] Furthermore, a support beam is provided between the screen plates, the support beam extends in the front-to-back direction, and the front and rear ends of the support beam are installed on the screen frame, with the screen plate shaft passing through the support beam.

[0010] Furthermore, the sieve plate is in the shape of fish scales.

[0011] Furthermore, the sieve plate includes a fixing plate and fish scales. The fish scales are fixed to the upper end of the fixing plate, and a groove is provided at the connection position between the fixing plate and the fish scales. The sieve plate shaft is installed in the groove.

[0012] The beneficial effects achieved by this utility model by adopting the above technical solution are as follows: the movement of the screen plate adjusting plate is controlled by the screen plate adjusting screw, and the rotation of all screen plate shafts is controlled by a single screen plate adjusting plate, thereby adjusting the angle between the fish scale-shaped screen plate and the plane, controlling the residence time of the material on the screen surface, thereby improving the cleaning effect of corn kernels, avoiding the problem of corn kernel loss caused by incomplete kernel cleaning, with simple structure, low cost, and easy operation, significantly improving the harvesting efficiency and effect of corn harvesting machinery. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the rear structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the installation structure of the sieve plate and sieve plate shaft of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the sieve plate of this utility model.

[0017] In the diagram, 1 is the screen frame; 2 is the screen plate; 3 is the screen plate shaft; 4 is the screen plate adjusting plate; 5 is the screen plate adjusting screw; 6 is the mounting groove; 7 is the support beam; 11 is the left beam of the screen frame; 12 is the right beam of the screen frame; 13 is the front beam of the screen frame; 14 is the rear beam of the screen frame; 21 is the fixing plate; 22 is the fish scale plate; and 23 is the groove. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Example 1

[0019] Reference Figure 1-4 A type of easily adjustable grain cleaning sieve includes a sieve frame 1, sieve plates 2, sieve plate shafts 3, sieve plate adjusting plates 4, and sieve plate adjusting screws 5. The sieve plates 2 are fixed on the sieve plate shafts 3, and the left and right ends of the sieve plate shafts 3 are rotatably mounted on the sieve frame 1. The sieve plate shafts 3 are evenly distributed inside the sieve frame 1. The sieve plate adjusting plates 4 are assembled with all the sieve plate shafts 3. The sieve plate adjusting plates 4 drive the sieve plate shafts 3 to move. The sieve plate adjusting screws 5 are mounted on the sieve frame 1 and fixed to the sieve plate adjusting plates 4. The sieve plate adjusting screws 5 drive the sieve plate adjusting plates 4 to move back and forth.

[0020] The screen plate adjusting screw 5 is used to adjust the movement of the screen plate adjusting plate 4, which in turn adjusts the rotation of the screen plate shaft 3. The rotation of the screen plate shaft 3 then drives the adjustment of the screen plate 2 angle, thus allowing the screen plate 2 angle to be adjusted via the screen plate adjusting screw 5. This operation is convenient.

[0021] Furthermore, the connection point between the screen shaft 3 and the screen adjusting plate 4 is bent downwards to form a mounting groove 6, in which the screen adjusting plate 4 is engaged. Through the cooperation of the mounting groove 6 and the screen adjusting plate 4, the screen shaft 3 is driven to rotate when the screen adjusting plate 4 moves back and forth.

[0022] Furthermore, the screen plate adjusting plate 4 corresponds to the middle of the screen plate shaft 3. This ensures that one screen plate adjusting plate 4 can stably control the rotation of all screen plate shafts 3, resulting in a stable structure and reasonable force distribution.

[0023] Furthermore, the screen frame 1 includes a left beam 11, a right beam 12, a front beam 13, and a rear beam 14. The two ends of the screen blade shaft 3 are mounted on the left beam 11 and the right beam 12. The screen blade adjusting plate 4 extends from the front beam 13 to the rear beam 14. The screen blade adjusting screw 5 is mounted on the rear beam 14.

[0024] Furthermore, a support beam 7 is provided between the screen plates 2. The support beam 7 extends in the front-to-back direction, and its front and rear ends are mounted on the screen frame 1. The screen plate shaft 3 passes through the support beam 7. The support beam 7 supports the screen plate shaft 3, preventing it from being deformed by force and affecting its rotation.

[0025] Furthermore, the sieve plate 2 is in the shape of fish scales.

[0026] Furthermore, the sieve plate 2 includes a fixing plate 21 and fish scales 22. The fish scales 22 are fixed to the upper end of the fixing plate 21. A groove 23 is provided at the connection position between the fixing plate 21 and the fish scales 22, and the sieve plate shaft 3 is installed in the groove 23.

[0027] The screen plate 2 is welded to the screen plate shaft 3, and the connection structure is stable. The fish scale-shaped screen plate 2 can form an effective screen surface, which is beneficial to improving the screening efficiency and effect of corn kernels.

[0028] The working principle of this easily adjustable grain cleaning sieve is as follows: by adjusting the sieve adjustment screw 5, the sieve adjustment plate 4 is moved back and forth. When the sieve adjustment plate 4 moves back and forth, it drives the sieve shaft 3 to rotate. The rotation of the sieve shaft 3 drives the sieve 2 to rotate, thereby realizing the adjustment of the angle of the sieve 2. By adjusting the angle between the sieve 2 and the plane, the residence time of corn kernels with impurities on the sieve surface formed by the sieve 2 is controlled, thereby improving the corn kernel cleaning effect and avoiding the problem of corn kernels being wrapped in corn husks and discharged from corn harvesting machinery, resulting in corn kernel loss.

Claims

1. A kernel cleaning sieve that is easy to adjust, characterized in that: The screen frame (1), the screen sheet (2), the screen sheet shaft (3), the screen sheet adjusting plate (4) and the screen sheet adjusting screw rod (5) are included, the screen sheet (2) is fixed on the screen sheet shaft (3), the left and right ends of the screen sheet shaft (3) are rotatably installed on the screen frame (1), the screen sheet shaft (3) is uniformly distributed in the screen frame (1), the screen sheet adjusting plate (4) is assembled with all screen sheet shafts (3), the screen sheet adjusting plate (4) drives the screen sheet shaft (3) to move, the screen sheet adjusting screw rod (5) is installed on the screen frame (1), the screen sheet adjusting screw rod (5) is fixed with the screen sheet adjusting plate (4), and the screen sheet adjusting screw rod (5) drives the screen sheet adjusting plate (4) to move forward and backward. The position, where the screen sheet shaft (3) is connected with the screen sheet adjusting plate (4), is bent downward to form a mounting groove (6), and the screen sheet adjusting plate (4) is clamped in the mounting groove (6). Support beams (7) are arranged between the screen sheets (2), the support beams (7) extend in the front-back direction, the front and rear ends of the support beams (7) are installed on the screen frame (1), and the screen sheet shaft (3) penetrates the support beams (7). The screen sheet (2) includes a fixed plate (21) and a fish scale (22), the fish scale (22) is fixed on the upper end of the fixed plate (21), a recess (23) is arranged at the position where the fixed plate (21) and the fish scale (22) are connected, and the screen sheet shaft (3) is installed in the recess (23).

2. A kernel cleaning sieve as claimed in claim 1, wherein: The screen sheet adjusting plate (4) corresponds to the middle part of the screen sheet shaft (3).

3. A kernel cleaning sieve as claimed in claim 1, wherein: The screen frame (1) includes a screen frame left beam (11), a screen frame right beam (12), a screen frame front beam (13) and a screen frame rear beam (14), the two ends of the screen sheet shaft (3) are installed on the screen frame left beam (11) and the screen frame right beam (12), the screen sheet adjusting plate (4) extends from the screen frame front beam (13) to the screen frame rear beam (14), and the screen sheet adjusting screw rod (5) is installed on the screen frame rear beam (14).

4. A kernel cleaning sieve as claimed in claim 1, wherein: The screen sheet (2) is in the shape of a fish scale.

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