Corn harvester dust extractor

Abstract

The utility model belongs to the technical field of agricultural equipment, concretely relates to a corn harvester dust collector. Install at the feed inlet of corn harvester, include: main cover, form with cutting chamber, install the main cover one side, have with the discharge channel of cutting chamber intercommunication with cutting chamber, and cutter, install in cutting chamber, install drive motor on the main cover, this drive motor combines with cutter, drive motor drives the rotation of cutter to make cutting chamber form negative pressure area to inhaled corn straw from discharge channel to cutting chamber. The utility model drives the cutter inside cutting chamber to rotate through the drive motor and makes the cutting chamber form negative pressure, inhaled corn straw and the impurity carried in it into cutting chamber, and the cutter can cut the impurity, so that the impurity is cut to form the debris and is pushed out from the discharge channel due to centrifugal force etc. to realize the separation of impurity.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural equipment technology, specifically relating to a dust collector for a corn harvester. Background Technology

[0002] A corn harvester is an agricultural machine that performs multiple tasks such as picking ears, cutting and removing impurities, and harvesting corn when it is ripe. In current corn harvesters, the harvested corn stalks are usually pre-treated to separate weeds and other impurities mixed in with them. The separated corn stalks then enter the next process for further processing, while the impurities are discharged.

[0003] Currently, the pre-treatment device of corn harvesters on the market is usually set at the material inlet and equipped with rotating blades. The rotating blades are connected to the engine of the corn harvester through a belt drive or gear drive structure. The power unit drives the rotating blades to rotate to agitate weeds and corn stalks. During the rotation, some of the lighter weeds will be thrown out due to centrifugal force, thus achieving the separation of debris.

[0004] Although the above-mentioned device can separate debris, the rotating blades need to be connected to the engine of the corn harvester by belt drive or gear drive mechanism. During operation, problems such as insufficient speed, belt slippage (or gear misalignment) and increased fuel consumption due to heavy engine load are likely to occur. Summary of the Invention

[0005] To solve the above problems, this utility model provides a corn harvester vacuum cleaner with good separation effect, fast rotation speed and no fuel consumption.

[0006] The present invention adopts the following technical solution:

[0007] A dust collector for a corn harvester, characterized by being installed at the feed inlet of the corn harvester for pre-treatment (debris separation) of corn stalks mixed with impurities, comprises: a main cover having a cutting chamber; a discharge cover installed on one side of the main cover having a discharge channel communicating with the cutting chamber; and a cutter installed in the cutting chamber; wherein a drive motor is installed on the main cover, the drive motor being combined with the cutter, the drive motor driving the cutter to rotate and create a negative pressure zone in the cutting chamber, thereby drawing material from the discharge channel into the cutting chamber.

[0008] Furthermore, the corn harvester vacuum cleaner proposed in this utility model also has the following features: the cutter has: a cutting frame, which is mounted on the output shaft of the drive motor and rotates under the drive of the drive motor; and at least one cutting blade, which is mounted on the cutting frame.

[0009] Furthermore, the dust collector for corn harvesters proposed in this utility model also has the following feature: the cutting frame includes: a main board containing a bushing into which the output shaft extends, and the bushing extends toward the side away from the drive motor; a plurality of sub-plates are evenly arranged in a circular pattern around the outer periphery of the bushing; wherein, one end of the sub-plate is integral with the bushing, and the other end is equipped with the cutting blade.

[0010] Furthermore, the dust collector for a corn harvester proposed in this utility model also has the following features: the sub-plate includes: a first edge, which is integrally formed with the bushing; a second edge, which is integrally formed with the main plate; and a third edge, which is arc-shaped and located on the opposite side of the second edge; wherein the third edge has an inner end and an outer end, and the distance from the inner end to the second edge is less than the distance from the outer end to the second edge.

[0011] Furthermore, the dust collector for corn harvesters proposed in this utility model also has the following feature: a mounting plate is provided at the end of the sub-plate away from the bushing, and the cutting blade is detachably mounted on the mounting plate by a fixing member, and the cutting blade is a double-edged blade.

[0012] Furthermore, the dust collector for corn harvesters proposed in this utility model also has the following features: the main cover is shaped like a volute; the drive motor is installed on the outside of the main cover; the output shaft passes through the main cover and extends into the bushing; and the main cover has heat dissipation holes leading to the cutting chamber.

[0013] Furthermore, the dust collector for corn harvesters proposed in this utility model also has the following feature: the side of the main cover is provided with an installation port, which forms an installation frame, and the installation frame is provided with fixing holes for fixing the waste removal cover.

[0014] Furthermore, the dust collector for corn harvesters proposed in this utility model also has the following feature: the side of the mounting frame is provided with a positioning strip, and the inner side of the end of the debris discharge cover connected to the mounting frame is provided with a positioning slot for the positioning strip to be inserted.

[0015] Furthermore, the dust collector for corn harvesters proposed in this utility model also has the following feature: a fixing plate is formed at the bottom of the main cover, and a limiting groove is formed at the connection between the fixing plate and the mounting frame, with the bottom of one end of the mounting frame embedded in the limiting groove.

[0016] Furthermore, the dust collector for corn harvesters proposed in this utility model also has the following feature: an opening is formed at the bottom of the debris discharge hood, and an arc-shaped guide surface is formed at the end of the debris discharge hood away from the main hood, with the center of the arc-shaped guide surface located on the side where the opening is located.

[0017] Functions and effects of utility models

[0018] This utility model proposes a dust collector for corn harvesters, installed at the feed inlet of the harvester. A drive motor rotates the cutter inside the cutting chamber, creating negative pressure that draws corn stalks and impurities into the chamber. The cutter then cuts the impurities, and the resulting fragments are discharged through the discharge channel by centrifugal force, thus separating the impurities. Compared to existing belt or gear drives, using a drive motor offers controllable speed, enabling efficient separation at high speeds. Furthermore, the drive motor only requires power and consumes no oil, resulting in energy savings and zero pollution. Attached Figure Description

[0019] Figure 1 This is a simplified structural diagram from the top view of an embodiment of this utility model.

[0020] Figure 2 This is a simplified structural diagram from the bottom view of an embodiment of this utility model.

[0021] Figure 3 This is one of the structural diagrams of the cutter in this embodiment of the utility model.

[0022] Figure 4 This is the second simplified structural diagram of the cutter in this embodiment of the utility model.

[0023] Figure 5 This is an exploded view of the installation structure of the main cover, the waste removal cover, and the cutter in an embodiment of this utility model.

[0024] Figure 6 This is a structural cross-sectional view of an embodiment of the present utility model.

[0025] Reference numerals in the attached drawings: 10. Dust collector for corn harvester; 1. Main cover; 11. Cutting chamber; 12. Heat dissipation hole; 13. Mounting port; 14. Mounting frame; 141. Fixing hole; 142. Positioning strip; 15. Fixing plate; 16. Limiting slot; 2. Waste removal cover; 21. Discharge channel; 22. Connecting end; 23. Opening; 24. Arc-shaped guide surface; 25. Positioning slot; 3. Cutter; 3. Cutting frame; 31. Main board; 32. Bushing; 33. Sub-plate; 34. First edge; 341. Second edge; 342. Third edge; 343. Inner end; 3431. Outer end; 3432. Mounting plate; 35. Drive motor; 4. Output shaft; 41. Cutting blade; 51. Blade. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following describes the dust collector for corn harvesters in detail with reference to the embodiments and accompanying drawings.

[0027] <Example>

[0028] This embodiment proposes a dust collector 10 for a corn harvester, installed at the feed inlet of the corn harvester. It is used to at least suck in corn stalk material mixed with impurities (this material mainly consists of corn stalks and impurities) for pre-treatment (separating and discharging the impurities, while sending the corn stalks to the next process). Figure 1 and Figure 2 As shown, the device includes a main cover 1, a waste removal cover 2, and a cutter 3. The main cover 1 is shaped like a volute, with a cutting chamber 11 formed inside (at the bottom). A rotatable cutter 3 is installed inside the cutting chamber 11. The waste removal cover 2 is installed on one side of the main cover 1 and has a discharge channel 21 communicating with the cutting chamber 11. A drive motor 4 is installed on the main cover 1. This drive motor 4, combined with the cutter 3, drives the cutter 3 to rotate, creating a negative pressure zone 30 inside the cutting chamber 11. This draws the collected corn stalks mixed with impurities into the cutting chamber 11 from the inlet. The cutter 3 then cuts the weeds and other impurities, breaking them down into fragments. These fragments are then flung out by centrifugal force and discharged along the discharge channel 21. In this embodiment, the drive motor 4 is preferably a 12V or 24V brushless motor. The drive motor 4 has controllable speed, enabling efficient separation at high speeds. Furthermore, the brushless motor only requires power and does not consume oil, thus being energy-saving and pollution-free.

[0029] like Figure 3 As shown, the cutter 3 has a cutting frame 31 and at least one cutting blade 5 mounted on the cutting frame 31. The cutting frame 31 is mounted on the output shaft 41 of the drive motor 4 and rotates under the drive of the drive motor 4. Specifically, the cutting frame 31 includes a disc-shaped main plate 32 and several sub-plates 34 integrally formed with the main plate 32. A bushing 33 is formed in the middle of the main plate 32, and the bushing 33 extends toward the side away from the drive motor 4. The output shaft 41 of the drive motor 4 can extend into the bushing 33, thereby connecting the cutting frame 31 with the drive motor 4, so that the cutting frame 31 can rotate under the drive of the drive motor 4. During installation, a through hole for the output shaft 41 to pass through is opened in the middle of the main cover 1. The drive motor 4 is mounted on the outside of the main cover 1. The output shaft 41 passes through the through hole in the middle of the main cover 1 and extends into the bushing 33 to realize the installation connection between the drive motor 4 and the cutting frame 31. In addition, a heat dissipation hole 12 is opened on the main cover 1 to lead to the cutting chamber 11, so that the heat generated in the cutting chamber 11 can be dissipated in time.

[0030] In this embodiment, there are four sub-plates 34, which are evenly arranged circumferentially around the outer periphery of the bushing 33 (i.e., arranged perpendicularly between adjacent sub-plates 34). Each sub-plate 34 is a long strip, with one end integrally formed with the bushing 33 and the other end fitted with a cutting blade 5. Figure 4 As shown, each sub-plate 34 has the same shape, containing a first edge 341, a second edge 342, and a third edge 343. The first edge 341 is integrated with the bushing 33, the second edge 342 is integrated with the main plate 32, and the third edge 343 is arc-shaped and located on the opposite side of the second edge 342. The third edge 343 has an inner end 3431 and an outer end 3432. The distance h1 from the inner end 3431 to the second edge 342 is less than the distance h2 from the outer end 3432 to the second edge 342, so that a spherical or ellipsoidal space protruding to one side is formed below the cutting frame 31. This space can form a negative pressure zone 30 during the rotation of the cutting frame 31 to suck corn stalks and impurities from the feed inlet into the cutting chamber.

[0031] Each sub-plate 34 has a mounting plate 35 at the end furthest from the bushing 33. Each mounting plate 35 has a cutting blade 5 detachably mounted on it via fasteners (such as bolts or screws, not shown in the figure). These cutting blades 5 can cut and crush impurities as they rotate with the cutting frame 31. In some embodiments, the cutting blade 5 can be a double-edged blade, that is, the cutting blade 5 has cutting edges 51 on both sides. On the one hand, regardless of the direction of the motor rotation, one cutting edge can cut the material; on the other hand, after long-term cutting use, if one cutting edge is worn or dull, it can be removed and the orientation of the cutting blade 5 can be directly reversed to cut with the other cutting edge, thereby extending the service life of the equipment.

[0032] like Figure 2 , Figure 5 As shown, the impurity discharge cover 2 is a long rectangular shell with its inner end connected to the main cover 1. An opening 23 is formed at the bottom of the impurity discharge cover 2, which forms a discharge channel 21. An arc-shaped guide surface 24 is formed at the end of the impurity discharge cover 2 away from the main cover 1. The center of the arc-shaped guide surface 24 is located on the side where the opening 23 is located. Impurity fragments thrown out by centrifugal force enter the discharge channel 21 and are discharged downward along the arc-shaped guide surface 24.

[0033] The main cover 1 has a square mounting opening 13 on its side, forming a mounting frame 14. This mounting frame 14 has fixing holes 141 for fixing the waste removal cover 2. One end of the waste removal cover 2 is fixed to the fixing hole 141 by bolts or other fasteners. Furthermore, as... Figure 5 and Figure 6As shown, the mounting frame 14 also has a positioning strip 142 on its side. The connection point between the dust removal cover 2 and the mounting frame 14 serves as a connecting end 22. The inner side of the connecting end 22 has a positioning groove 25 for the positioning strip 142 to be inserted. A square fixing plate 15 is also formed at the bottom of the main cover 1. This fixing plate 15 is used to install the entire corn harvester vacuum cleaner 10 onto the body of the corn harvester. A limiting groove 16 is also formed at the connection point between the fixing plate 15 and the mounting frame 14. The bottom of the connecting end 22 of the dust removal cover 2 is embedded in the limiting groove 16. One side of the limiting groove 16 protrudes outward to form an irregular groove. Correspondingly, the bottom of the connecting end 22 also forms a matching irregularly shaped frame, which can enhance the tightness of the connection between the two. Under the combined restraint of the positioning strip 142 and the limiting groove 16, the connection between the dust removal cover 2 and the main cover 1 can be strengthened to prevent the dust removal cover 2 from separating and falling off the main cover 1 due to vibration generated by the equipment during operation.

[0034] To enhance the strength of the structure, reinforcing ribs and other strengthening structures can be added to the main cover 1, the secondary plate 34, the bushing 33, etc.

[0035] The dust collector for the corn harvester proposed in the above embodiment is fixedly installed on the machine body near the feed inlet of the corn harvester by a fixing plate 15. A drive motor 4 drives the cutter 3 inside the cutting chamber 11 to rotate, creating a negative pressure zone inside the cutting chamber 11. This draws the corn stalks and impurities they carry into the cutting chamber 11. Then, the cutting blade 32, mounted on the cutting frame 31, cuts the impurities during rotation. The resulting fragments are then pushed out of the discharge channel by centrifugal force, thus achieving impurity separation. This embodiment shreds the impurities, making them easier to separate. Compared to existing belt or gear drives, the drive motor offers controllable speed, enabling efficient separation at high speeds. Furthermore, the drive motor only requires power and does not consume oil, making it energy-saving and pollution-free.

[0036] The main cover 1 and the waste removal cover 2 of this application are made of high-strength and wear-resistant materials, such as nylon, preferably PA66-G50E11 type nylon. High-strength nylon material has the advantage of low temperature resistance, can be used in harsh weather conditions of -30 degrees Celsius, is not easily deformed or cracked, and has good vibration resistance.

[0037] The above embodiments are merely illustrative of specific implementations of the present invention, and the present invention is not limited to the scope of the above embodiments. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust collector for a corn harvester, characterized in that, Installed at the feed inlet of the corn harvester, including: The main cover forms a cutting chamber; A discharge hood, installed on one side of the main hood, has a discharge channel communicating with the cutting chamber; and A cutter is installed inside the cutting chamber; The main cover is equipped with a drive motor, which is combined with the cutter. The drive motor drives the cutter to rotate, creating a negative pressure zone in the cutting chamber, so as to draw the material from the feed port into the cutting chamber.

2. The dust collector for a corn harvester according to claim 1, characterized in that, The cutter has: The cutting frame is mounted on the output shaft of the drive motor and rotates under the drive of the drive motor; At least one cutting blade is mounted on the cutting frame.

3. The dust collector for a corn harvester according to claim 2, characterized in that, The cutting frame includes: The motherboard includes a bushing into which the output shaft extends, and the bushing extends toward a side away from the drive motor. Several auxiliary plates are evenly arranged in a circular pattern around the outer periphery of the bushing; The sub-plate is integrally formed with the bushing at one end, and the cutting blade is installed at the other end.

4. The dust collector for a corn harvester according to claim 3, characterized in that, The sub-plate contains: The first edge is integrated with the bushing to form a single unit; The second edge is integrated with the motherboard to form a single unit; as well as The third edge is arc-shaped and located on the opposite side of the second edge; The third edge has an inner end and an outer end, and the distance from the inner end to the second edge is less than the distance from the outer end to the second edge.

5. The dust collector for a corn harvester according to claim 4, characterized in that, The sub-plate is provided with a mounting plate at the end away from the bushing, and the cutting blade is detachably mounted on the mounting plate by a fixing member. The cutting blade is a double-edged blade.

6. The dust collector for a corn harvester according to any one of claims 3-5, characterized in that, The main cover is volute-shaped, the drive motor is mounted on the outside of the main cover, the output shaft passes through the main cover and extends into the bushing, and the main cover has heat dissipation holes leading to the cutting chamber.

7. The dust collector for a corn harvester according to claim 6, characterized in that, The main cover has a mounting opening on its side, which forms a mounting frame. The mounting frame has fixing holes for fixing the waste removal cover.

8. The dust collector for a corn harvester according to claim 7, characterized in that, The side of the mounting frame is also provided with a positioning strip, and the inner side of the end of the filament hood connected to the mounting frame is provided with a positioning slot for the positioning strip to be inserted.

9. The dust collector for a corn harvester according to claim 8, characterized in that, A fixing plate is formed at the bottom of the main cover, and a limiting groove is formed at the connection between the fixing plate and the mounting frame. The bottom of one end of the mounting frame is embedded in the limiting groove.

10. The dust collector for a corn harvester according to any one of claims 1-5, characterized in that, An opening is formed at the bottom of the discharge hood, and an arc-shaped guide surface is formed at the end of the discharge hood away from the main hood, with the center of the arc-shaped guide surface located on the side where the opening is located.

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