Grain recovery device of corn harvester

Abstract

The utility model discloses a corn harvester grain recovery device which comprises a recovery box, the recovery box is fixedly installed at the bottom of a peeling machine assembly, a first spiral shaft, a first sieve plate, an inverted-V-shaped flow guide plate, a second spiral shaft and a second sieve plate are sequentially installed in the recovery box from top to bottom, and a grain recovery cavity is formed in the bottom of an inner cavity of the recovery box; the first screw shaft and the second screw shaft synchronously rotate reversely, a main body of the first screw shaft is mounted in the first sieve plate, a main body of the second screw shaft is mounted in the second sieve plate, the first sieve plate and the second sieve plate are of arc-shaped structures, and the tops of the first sieve plate and the second sieve plate are open; an inclined flow guide plate is mounted at the bottom of the grain recovery cavity, and a grain outlet is formed in the lowest end of the inclined flow guide plate. According to the grain recovery device of the corn harvester, corn grains are recovered as many as possible through secondary cleaning, waste of the corn grains is reduced, and the grain recovery device has the advantages of being clean and thorough in cleaning and high in recovery efficiency.

Description

Technical Field

[0001] The utility model relates to a grain recovery device for a corn harvester, belonging to the technical field of corn harvesters. Background Art

[0002] A corn combine harvester is a large machine integrating functions of ear picking, husking, ear gathering and straw returning. However, during the husking process of the corn combine harvester, some corn grains are usually husked together. In order to collect the husked corn grains, the husks and the husked corn grains are discharged into the spiral conveyor box under the husker together. The spiral blade inside the spiral conveyor box rotates to push the husks out of the spiral conveyor box, and the corn grains fall into the lower grain collection box through the sieve at the bottom of the spiral conveyor box.

[0003] At present, the husked corn grains are generally recovered by a single-layer sieve. Some corn grains are mixed with the husks and discharged outside the machine, falling on the ground, resulting in waste of corn grains and incomplete recovery.

[0004] In summary, the existing technology obviously has inconveniences and defects in actual use, so it is necessary to be improved. Content of the Utility Model

[0005] Aiming at the deficiencies in the background art, the utility model provides a grain recovery device for a corn harvester, which can recover as many corn grains as possible through secondary cleaning, reduce waste of corn grains, and has the characteristics of thorough cleaning and high recovery efficiency.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A grain recovery device for a corn harvester includes a recovery box fixedly installed at the bottom of the husker assembly. Inside the recovery box, a first spiral shaft, a first sieve plate, an inverted V-shaped deflector, a second spiral shaft and a second sieve plate are sequentially installed from top to bottom. A grain recovery cavity is provided at the bottom of the inner cavity of the recovery box;

[0008] The first spiral shaft and the second spiral shaft rotate synchronously in opposite directions. The main body of the first spiral shaft is installed inside the first sieve plate, and the main body of the second spiral shaft is installed inside the second sieve plate. Both the first sieve plate and the second sieve plate are arc-shaped structures, and the tops of the first sieve plate and the second sieve plate are both open.

[0009] Further, the driving end and the driven end of the first spiral shaft are both rotatably connected to the side wall of the recovery box through bearing seats, and a driving pulley and a first transmission gear are installed on the driving end of the first spiral shaft.

[0010] Further, the driving end of the second spiral shaft is connected to the side wall of the recovery box through two bearing seats arranged side by side, and a waste discharge port is provided at the connection between the driven end of the second spiral shaft and the side wall of the recovery box.

[0011] Further, a second transmission gear meshingly connected with the first transmission gear is installed on the driving end of the second spiral shaft.

[0012] Further, one end of the first sieve plate along the length direction is fixedly connected to the inner wall of the recovery box, and a blanking hole is provided between the other end and the inner wall of the recovery box.

[0013] Further, both ends of the second sieve plate along the length direction are fixedly connected to the inner wall of the recovery box.

[0014] Further, an air blowing port is provided on the side of the grain recovery cavity, and a blower is connected to the outside of the air blowing port.

[0015] Further, an inclined deflector is installed at the bottom of the grain recovery cavity, and a grain outlet is provided at the lowest end of the inclined deflector.

[0016] After the present utility model adopts the above technical solutions, compared with the prior art, it has the following advantages:

[0017] In the present utility model, the two spiral shafts are synchronously driven and synchronously reversed; the ear with kernels enters the first sieve plate, and the first cleaning is realized under the action of the first sieve plate and the first spiral shaft. After cleaning, the ear with kernels enters the second sieve plate through the blanking hole, and the second cleaning is realized under the action of the second sieve plate and the second spiral shaft; through the secondary cleaning, as many corn kernels as possible are recovered, reducing the waste of corn kernels, and having the characteristics of thorough and clean cleaning and high recovery efficiency.

[0018] The present utility model will be described in detail below with reference to the accompanying drawings and embodiments. Description of the Drawings

[0019] Figure 1 is a structural schematic diagram of the present utility model;

[0020] Figure 2 is a distribution schematic diagram of the first spiral shaft and the second spiral shaft.

[0021] In the figure, 1 - recovery box, 2 - peeling machine assembly, 3 - first spiral shaft, 4 - second spiral shaft, 5 - first sieve plate, 6 - second sieve plate, 7 - inverted V-shaped deflector, 8 - blanking hole, 9 - driving pulley, 10 - first transmission gear, 11 - second transmission gear, 12 - waste discharge port, 13 - grain recovery cavity, 14 - air blowing port, 15 - inclined deflector, 16 - grain outlet. Detailed Embodiments

[0022] In order to have a clearer understanding of the technical features, objectives, and effects of the present utility model, the specific implementation manners of the present utility model will now be described with reference to the accompanying drawings.

[0023] As Figure 1 and Figure 2 collectively shown, the present utility model provides a grain recovery device for a corn harvester, which includes a recovery box 1. The recovery box 1 is fixedly installed at the bottom of a husker assembly 2. Inside the recovery box 1, a first spiral shaft 3, a first sieve plate 5, an inverted V-shaped diversion plate 7, a second spiral shaft 4, and a second sieve plate 6 are sequentially installed from top to bottom. At the bottom of the inner cavity of the recovery box 1, there is a grain recovery cavity 13.

[0024] The first spiral shaft 3 and the second spiral shaft 4 rotate in the same direction reversely.

[0025] The driving end and the driven end of the first spiral shaft 3 are both rotationally connected to the side wall of the recovery box 1 through bearing seats. A driving belt pulley 9 and a first transmission gear 10 are installed on the driving end of the first spiral shaft 3.

[0026] The driving end of the second spiral shaft 4 is connected to the side wall of the recovery box 1 through two bearing seats arranged side by side. At the connection of the driven end of the second spiral shaft 4 and the side wall of the recovery box 1, there is a waste discharge port 12, and the waste discharge port 12 outputs the husks from the recovery box 1.

[0027] A second transmission gear 11 meshing with the first transmission gear 10 is installed on the driving end of the second spiral shaft 4.

[0028] The driving belt pulley 9 transmits power to the first spiral shaft 3, and then drives the second spiral shaft 4 to rotate through the meshing of gears. The rotation direction of the second spiral shaft 4 is opposite to that of the first spiral shaft 3.

[0029] The main body of the first spiral shaft 3 is installed inside the first sieve plate 5, and the main body of the second spiral shaft 4 is installed inside the second sieve plate 6. Both the first sieve plate 5 and the second sieve plate 6 are arc-shaped structures, and the tops of the first sieve plate 5 and the second sieve plate 6 are both open.

[0030] One end of the first sieve plate 5 along the length direction is fixedly connected to the inner wall of the recovery box 1, and there is a blanking hole 8 between the other end and the inner wall of the recovery box 1. The ear with grains is first cleaned inside the first sieve plate 5, and then enters the second sieve plate 6 through the blanking hole 8 for a second cleaning.

[0031] Both ends of the second sieve plate 6 along the length direction are fixedly connected to the inner wall of the recovery box 1.

[0032] The inverted V-shaped diversion plate 7 is used to divert the grains cleaned by the first sieve plate 5 to both sides, so that the grains cross the second sieve plate 6 and directly enter the grain recovery cavity 13 below.

[0033] A blast air inlet 14 is provided on the side of the grain recovery chamber 13, and a blower is connected to the outside of the blast air inlet 14. The blower is used for strong impurity removal to remove small-volume impurities mixed in the grains.

[0034] An inclined deflector 15 is installed at the bottom of the grain recovery chamber 13, and a grain outlet 16 is provided at the lowest end of the inclined deflector 15.

[0035] The specific working principle of the present utility model:

[0036] The peeling machine assembly 2 peels the corn, and the ear with grains enters into the first sieve plate 5. Under the action of the first sieve plate 5 and the first spiral shaft 3, the first cleaning is realized. The ear with grains after cleaning enters into the second sieve plate 6 through the blanking hole 8, and the second cleaning is realized under the action of the second sieve plate 6 and the second spiral shaft 4;

[0037] The grains cleaned for the first time are deflected into the grain recovery chamber 13 under the action of the inverted V-shaped deflector 7, and the grains cleaned for the second time directly fall into the grain recovery chamber 13. After final collection, they are centrally output through the grain outlet 16; the husks are output from the waste discharge port 12 to the recovery box 1.

[0038] The above is an example of the best implementation mode of the present utility model. The parts not described in detail are all common general knowledge of those of ordinary skill in the art. The protection scope of the present utility model is subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the present utility model is also within the protection scope of the present utility model.

Claims

1. A corn harvester grain recovery device, characterized in that: The invention comprises a recovery box (1), wherein the recovery box (1) is fixedly mounted at the bottom of the peeling machine assembly (2), wherein a first spiral shaft (3), a first screen plate (5), an inverted V-shaped guide plate (7), a second spiral shaft (4) and a second screen plate (6) are sequentially mounted inside the recovery box (1) from top to bottom, and a seed recovery chamber (13) is arranged at the bottom of the inner chamber of the recovery box (1); The first spiral shaft (3) and the second spiral shaft (4) rotate inversely synchronously; the main body of the first spiral shaft (3) is mounted inside the first sieve plate (5), and the main body of the second spiral shaft (4) is mounted inside the second sieve plate (6); the first sieve plate (5) and the second sieve plate (6) are both arc-shaped structures, and the tops of the first sieve plate (5) and the second sieve plate (6) are both opened.

2. A corn harvester grain recovery device as claimed in claim 1, characterized in that: The driving end and the driven end of the first spiral shaft (3) are both rotatably connected to the side wall of the recovery box (1) via a bearing seat, and a driving pulley (9) and a first transmission gear (10) are mounted on the driving end of the first spiral shaft (3).

3. A corn harvester grain recovery device as claimed in claim 2, characterized in that: The driving end of the second spiral shaft (4) is connected to the side wall of the recovery box (1) via two bearing seats arranged side by side, and a debris discharge port (12) is provided at the connection between the driven end of the second spiral shaft (4) and the side wall of the recovery box (1).

4. A corn harvester grain recovery device as claimed in claim 3, characterized in that: A second transmission gear (11) meshingly connected with the first transmission gear (10) is mounted on the driving end of the second screw shaft (4).

5. The corn harvester grain recovery device according to claim 1, characterized in that: One end of the first screen plate (5) along the length direction is fixedly connected to the inner wall of the recovery box (1), and a material drop hole (8) is provided between the other end and the inner wall of the recovery box (1).

6. A corn harvester grain recovery device as claimed in claim 1, characterized in that: Both ends of the second screen plate (6) along the length direction are fixedly connected to the inner wall of the recovery box (1).

7. A corn harvester grain recovery device as claimed in claim 1, characterized in that: The side of the seed recovery chamber (13) is provided with an air blowing port (14), and the outside of the air blowing port (14) is connected to a fan.

8. The corn harvester grain recovery device according to claim 1, characterized in that: An oblique guide plate (15) is installed at the bottom of the seed recovery chamber (13), and a seed outlet (16) is provided at the lowest end of the oblique guide plate (15).

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