A corn harvester chaffer fan assembly

Abstract

The utility model discloses a corn harvester removes sundry fan assembly, including feed mechanism, fan frame, wind power adjusting component, air suction sundry removal mechanism and power mechanism, and fan frame includes air adjusting mouth, discharge port and air inlet, and air inlet connects feed mechanism, and air suction sundry removal mechanism includes centrifugal fan sundry removal part and cuts sundry part, and power mechanism is used to make centrifugal fan sundry removal part rotate, forms wind and will sundry into cutting sundry part, and cutting sundry part carries out rotation to cut sundry after, and exports from discharge port, wind power adjusting component sets up on air adjusting mouth, and wind power adjusting component is used to adjust the wind speed and the size of air volume to the fan frame, thereby changes the wind speed, air volume from feed mechanism upwards, the utility model discloses can adjust the wind speed and air volume of fan generation, thereby improves the separation effect of corn and sundry, and the sundry after separation is discharged again after cutting and crushing fan, improves fan edulcoration efficiency, prevents fan and harvester subsequent device from happening and blocks up.

Description

Technical Field

[0001] This utility model belongs to the technical field of agricultural harvesting devices, specifically relating to a dust removal fan assembly for a corn harvester. Background Technology

[0002] Corn harvesters are indispensable machines for large-scale corn harvesting. Because the harvested crop includes not only corn but also a large amount of straw, weeds, and husks, which are lighter than corn, existing corn harvesters typically include a fan to generate airflow to separate the corn from the debris, preventing blockages in subsequent processes. However, most existing corn harvester fans simply suck the debris into the separation chamber and discharge it directly. This method is ineffective when handling larger or longer debris, easily causing fan blockages and impacting production efficiency. Incorporating a structure within the fan to cut the debris effectively addresses these blockage issues.

[0003] In corn harvester fans with added cutting and crushing mechanisms, such as the corn harvester fan device disclosed in announcement number CN105875028B, it consists of a power supply device, a suction device, a crushing device, a monitoring device, and an active de-clogging device. The suction device and the crushing device are fixedly installed on the power supply device, the monitoring device is fixedly installed on the crushing device, and the active de-clogging device is fixedly installed at the lower end of the crushing device. Although this can reduce the amount of straw and debris entering the peeler, lighten its load, increase the peeling rate, increase the service life of the peeling roller, and reduce the failure rate, there are differences in the varieties, sizes, and weights of corn grown in different regions of my country. When harvesting lighter corn or when there is less debris, the fan may suck in debris and corn at the same time and crush them together, requiring appropriate adjustment of the fan's airflow. Utility Model Content

[0004] To address the aforementioned problems, this utility model aims to provide a corn harvester impurity removal fan assembly that can adjust the wind speed and air volume generated by the fan, thereby improving the separation effect of corn and impurities. The separated impurities are then cut and crushed before being discharged from the fan, improving the impurity removal efficiency of the fan and preventing blockage of the fan and subsequent devices of the harvester.

[0005] The technical problem solved by this utility model can be achieved by the following technical solution: a corn harvester impurity removal fan assembly, including a conveying mechanism, a fan frame, a wind power adjustment component, a suction and impurity removal mechanism, and a power mechanism. The fan frame includes an air inlet, a discharge port, and an air inlet. The air inlet is connected to the conveying mechanism. The suction and impurity removal mechanism includes a centrifugal fan impurity removal section and a cutting section. The power mechanism provides power to rotate the centrifugal fan impurity removal section, so that air from the air inlet carries impurities into the cutting section. After the cutting section rotates and cuts the impurities, the centrifugal fan impurity removal section discharges the impurities from the discharge port. The wind power adjustment component is installed on the air inlet and is used to adjust the wind speed and air volume entering the fan frame, thereby changing the wind speed and air volume upward from the conveying mechanism.

[0006] The centrifugal fan's waste removal section includes an impeller and a rotating shaft. The impeller is equipped with several blades, and the waste removal section includes several blades and a mounting base. The blade ends are fixedly mounted on the end of the mounting base. The rotating shaft passes through and connects to the impeller, and the end of the rotating shaft is fixedly connected to the mounting base, so that when the rotating shaft rotates, it can drive the impeller, the mounting base, and the blades to rotate.

[0007] Several reinforcing plates are also installed between the blades.

[0008] The fan frame also includes a cavity, and the air intake and exhaust mechanism is located inside the cavity.

[0009] The wind force adjustment component includes a first wind adjustment plate and a second wind adjustment plate. The first wind adjustment plate is provided with a plurality of first wind adjustment parts, and the second wind adjustment plate includes a plurality of second wind adjustment parts and a plurality of wind-blocking parts. By adjusting the area of ​​the first wind adjustment parts covering the second wind adjustment parts or the wind-blocking parts, the wind force flow of the air adjustment port can be changed.

[0010] The power mechanism includes a power unit and a fixed base, with the centrifugal fan's waste removal unit and the power unit connected to both sides of the fixed base, respectively.

[0011] The power unit includes a drive shaft and two bevel gears. The drive shaft passes through and is connected to one of the bevel gears, and the rotating shaft passes through and is connected to the other bevel gear. The bevel gears are meshed together, and the drive shaft can drive the rotating shaft to rotate when it rotates.

[0012] Compared with the prior art, this utility model has the following advantages: This utility model can adjust the wind speed and air volume generated by the blower, thereby improving the separation effect of corn and debris. The separated debris is cut and crushed before being discharged from the blower, improving the blower's debris removal efficiency and preventing blockage of the blower and subsequent devices of the harvester. Attached Figure Description

[0013] Figure 1 This is an exploded structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a structural diagram of the suction and removal mechanism and the power mechanism; Figure 4 This is a schematic diagram of the wind power regulation component. Figure 1 ; Figure 5 This is a schematic diagram of the wind power regulation component. Figure 2 ; Figure 6 This is a schematic diagram of the wind power regulation component. Figure 3 ; Figure 7 This is a schematic diagram of the wind power regulation component. Figure 4 ; Figure 8 This is a cross-sectional view of the present invention.

[0014] In the diagram: 1-Conveying mechanism, 2-Fan frame, 21-Air outlet, 22-Discharge port, 23-Cavity, 24-Air inlet, 3-Wind power adjustment component, 31-First air adjustment plate, 311-First air adjustment section, 32-Second air adjustment plate, 321-Second air adjustment section, 322-Wind baffle section, 4-Suction and impurity removal mechanism, 41-Centrifugal fan impurity removal section, 411-Impeller, 412-Shaft, 413-Reinforcing plate, 42-Cut impurity section, 421-Blade, 422-Mounting base, 5-Power mechanism, 51-Power section, 511-Drive shaft, 512-Bevel gear, 52-Fixed base. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0016] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] Combined with appendix Figures 1 to 8As shown, this embodiment discloses a corn harvester's waste removal fan assembly, including a material conveying mechanism 1, a fan frame 2, a wind power adjustment component 3, a suction and waste removal mechanism 4, and a power mechanism 5. The fan frame 2 includes an air inlet 21, a discharge outlet 22, and an air inlet 24. The air inlet 24 is connected to the material conveying mechanism 1, which transports corn, straw, weeds, and other waste to the air inlet 24. The suction and waste removal mechanism 4 includes a centrifugal fan waste removal section 41 and a waste cutting section 42. The force mechanism 5 provides power to rotate the centrifugal fan's waste removal section 41, generating airflow and carrying the waste into the waste cutting section 42 from the air inlet 24. After the waste cutting section 42 rotates and cuts the waste, the centrifugal fan's waste removal section 41 discharges the waste from the discharge port 22. The wind force adjustment component 3 is installed on the air adjustment port 21. The wind force adjustment component 3 is used to adjust the wind speed and air volume entering the fan frame 2, thereby changing the wind speed and air volume upward from the material conveying mechanism.

[0018] In conjunction with the above, the fan frame 2 also includes a cavity 23, an air suction and impurity removal mechanism 4 is disposed inside the cavity 23, a discharge port 22 is disposed on the side of the cavity 23 and connected to the cavity 23, and an air regulating port 21 is disposed below the cavity 23 and connected to the cavity 23.

[0019] In summary, the centrifugal fan's waste removal section 41 includes an impeller 411 and a rotating shaft 412. The impeller 411 has several blades, and the waste removal section 42 includes several blades 421 and a mounting base 422. In this embodiment, there are four blades and two blades 421. The ends of the blades 421 are fixedly mounted on the ends of the mounting base 422, with the cutting edges of the blades 421 tilting downwards. The rotating shaft 412 passes through and connects to the impeller 411, and its ends are fixedly connected to the mounting base 422, so that when the rotating shaft 412 rotates, it can drive the impeller 411, the mounting base 422, and the blades 421 to rotate. In this embodiment, the blades 421 and the mounting base 422, and the rotating shaft 412 and the mounting base 422, are fixedly installed using bolts or other fasteners. In other embodiments, other connection structures commonly used in the prior art, such as snap-fit ​​connections or embedded connections, can also be used.

[0020] In conjunction with the above installation structure, several reinforcing plates 413 are also provided between several blades to enhance the stability of the structure between the blades when the impeller 411 rotates. In this embodiment, two reinforcing plates 413 are provided between two adjacent blades, and the reinforcing plates 413 between two adjacent blades are arranged vertically.

[0021] In conjunction with the above, the wind force adjustment component 3 includes a first wind adjustment plate 31 and a second wind adjustment plate 32. The first wind adjustment plate 31 is provided with a plurality of first wind adjustment parts 311, and the second wind adjustment plate 32 includes a plurality of second wind adjustment parts 321 and a plurality of wind baffles 322. In this embodiment, the number of first wind adjustment parts 311, second wind adjustment parts 321 and wind baffles 322 are all 6, and they are evenly distributed in a fan shape in the circumferential direction of the first wind adjustment plate 31 and the second wind adjustment plate 32. By adjusting the area of ​​the first wind adjustment parts 311 covering the second wind adjustment parts 321 or the wind baffles 322, the wind speed, air volume and return air effect of the air adjustment port 21 can be changed.

[0022] In this embodiment, based on the above installation structure, the first air regulating plate 31 and the second air regulating plate 32 are fixedly connected by bolts or other fasteners. During installation, the first air regulating plate 31 can be rotated and adjusted to change the area of ​​the first air regulating part 311 covering the second air regulating part 321 or the windbreak part 322. Figure 5 As shown, at this time, the first air regulating section 311 completely covers the second air regulating section 321, and the wind speed and air volume reach their maximum; combined with Figure 6 As shown, at this time, the first air-adjusting part 311 partially covers the second air-adjusting part 321, and the other part covers the windbreak part 322, at which point the wind speed and air volume decrease; combined with Figure 7 As shown, at this time, the first air regulating part 311 completely covers the windproof part 322, and the wind cannot enter or exit from the air regulating port 21, so the wind speed and air volume reach the minimum.

[0023] In this embodiment, based on the above installation structure, the first air regulating plate 31 is disposed on the outside of the second air regulating plate 32, and the second air regulating plate 32 is fixedly disposed on the outside of the air regulating port 21 by fasteners such as bolts. In other embodiments, the first air regulating plate can also be disposed on the inside of the second air regulating plate 32, and the second air regulating plate 32 can be disposed on the inside of the air regulating port 21. Other common connection structures in the prior art can also be used between the second air regulating plate 32 and the air regulating port 21.

[0024] In summary, the power mechanism 5 includes a power unit 51 and a fixed base 52. The fixed base 52 is located above the cavity 23 of the fan frame 2. The centrifugal fan exhaust unit 41 and the power unit 51 are respectively fixedly connected to both sides of the fixed base 52. The power unit 51 is externally connected to a motor or other driving device. The power unit 51 includes a drive shaft 511 and two bevel gears 512. In this embodiment, the power unit 51 uses a motor to drive the pulley to rotate, so that the drive shaft 511 can rotate. The drive shaft 511 is connected through one of the bevel gears 512, and the rotating shaft 412 is connected through the other bevel gear 512. The two bevel gears 512 are meshed together. When the drive shaft 511 rotates, it can drive the rotating shaft 412 to rotate, thereby realizing power transmission, optimizing the transmission ratio, and improving the stability of the device structure.

[0025] This invention can adjust the wind speed and air volume generated by the blower, thereby improving the separation effect of corn and debris. The separated debris is cut and crushed before being discharged from the blower, improving the blower's impurity removal efficiency and preventing blockage of the blower and subsequent devices of the harvester.

[0026] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the utility model. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A corn harvester's waste removal fan assembly, comprising a material conveying mechanism (1), a fan frame (2), a wind power adjustment component (3), a suction and waste removal mechanism (4), and a power mechanism (5), characterized in that: The fan frame (2) includes an air inlet (21), a discharge port (22) and an air inlet (24). The air inlet (24) is connected to the material conveying mechanism (1). The suction and dust removal mechanism (4) includes a centrifugal fan dust removal section (41) and a dust cutting section (42). The power mechanism (5) provides power to make the centrifugal fan dust removal section (41) rotate, generate air, and carry the dust into the dust cutting section (42) from the air inlet (24). After the dust cutting section (42) rotates and cuts the dust, the centrifugal fan dust removal section (41) discharges the dust from the discharge port (22). The wind force adjustment component (3) is set on the air inlet (21). The wind force adjustment component (3) is used to adjust the wind speed and air volume entering the fan frame (2), thereby changing the wind speed and air volume upward from the material conveying mechanism.

2. The corn harvester exhaust fan assembly according to claim 1, characterized in that: The centrifugal fan's waste removal section (41) includes an impeller (411) and a rotating shaft (412). The impeller (411) is provided with several blades. The waste removal section (42) includes several blades (421) and a mounting base (422). The ends of the blades (421) are fixedly installed on the ends of the mounting base (422). The rotating shaft (412) passes through and connects to the impeller (411), and the ends of the rotating shaft (412) are fixedly connected to the mounting base (422), so that when the rotating shaft (412) rotates, it can drive the impeller (411), the mounting base (422) and the blades (421) to rotate.

3. The corn harvester exhaust fan assembly according to claim 2, characterized in that: Several reinforcing plates (413) are also provided between the blades.

4. The corn harvester exhaust fan assembly according to claim 2, characterized in that: The fan frame (2) also includes a cavity (23), and the suction and dust removal mechanism (4) is located inside the cavity (23).

5. The corn harvester exhaust fan assembly according to claim 1, characterized in that: The wind force adjustment component (3) includes a first wind adjustment plate (31) and a second wind adjustment plate (32). The first wind adjustment plate (31) is provided with a plurality of first wind adjustment parts (311), and the second wind adjustment plate (32) includes a plurality of second wind adjustment parts (321) and a plurality of wind baffles (322). By adjusting the area of ​​the first wind adjustment part (311) covering the second wind adjustment part (321) or the wind baffle (322), the wind flow of the air outlet (21) can be changed.

6. The corn harvester exhaust fan assembly according to claim 1, characterized in that: The power mechanism (5) includes a power unit (51) and a fixed base (52), with the centrifugal fan exhaust unit (41) and the power unit (51) respectively connected to both sides of the fixed base (52).

7. The corn harvester exhaust fan assembly according to claim 6, characterized in that: The power unit (51) includes a drive shaft (511) and two bevel gears (512). The drive shaft (511) is connected through one of the bevel gears (512), and the rotating shaft (412) is connected through the other bevel gear (512). The bevel gears (512) are meshed together. When the drive shaft (511) rotates, it can drive the rotating shaft (412) to rotate.

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