Corn threshing device

Abstract

The utility model discloses a corn threshing device, which relates to the field of threshing equipment, and adopts the technical scheme that the corn threshing device comprises a threshing cylinder and an inner roller, a feeding port and a discharging port are formed in the two ends of the threshing cylinder respectively, the inner wall of the threshing cylinder is obliquely arranged, the feeding port is higher than the discharging port, an inner roller is arranged in the threshing cylinder in the axial direction and rotates relative to the threshing cylinder, threshing protrusions are arranged on the outer wall of the inner roller, and the threshing cylinder is arranged on the threshing cylinder. The distance between the outer wall of the inner roller and the inner wall of the threshing cylinder is smaller when the distance is closer to one end of the discharge port. The corn thresher can thoroughly and fully thresh corns, automatically adapts to the change of the outer diameter of threshed corn cobs, and is thorough in threshing and very high in efficiency.

Description

Technical Field

[0001] The utility model relates to the field of threshing equipment, in particular to a corn threshing device. Background Art

[0002] Deep processing of corn requires threshing of the corn. In the prior art, a patent document with publication number CN104272933A discloses a technical solution of a corn thresher, which adopts a rotating shaft set in a shell, and thres the corn kernels through the corn strips on the shaft. There are some problems when using this solution, that is, the distance between the corn strips and the shell is constant, and the corn cobs are not threshed all at the same time, but gradually. During the threshing process, the circular diameter gradually becomes smaller, and the corn kernels remaining on the corn cob may not be effectively threshed due to the wide distance. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a corn threshing device, which can completely and fully thresh corn and automatically adapt to the changes in the outer diameter of threshed corn cobs, and the threshing is complete and efficient.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a corn threshing device, comprising a threshing cylinder and an inner roller;

[0005] The two ends of the threshing cylinder are respectively a feed port and a discharge port, the inner wall of the threshing cylinder is inclined, wherein the feed port is higher than the discharge port, an inner roller is axially arranged in the inner axis of the threshing cylinder, the inner roller is rotatably arranged relative to the threshing cylinder, a threshing protrusion is arranged on the outer wall of the inner roller, and the distance between the outer wall of the inner roller and the inner wall of the threshing cylinder is smaller as the end closer to the discharge port.

[0006] The threshing drum of this scheme is inclined so that the corn cobs enter from the feed port and are then discharged from the discharge port. When inside the threshing drum, they pass through the inner roller. Since the outer wall of the inner roller is provided with a grain stripping protrusion, the rotating inner roller will frictionally squeeze the corn kernels to separate the threshes. The corn is not completely threshed, but is gradually threshed in the process of moving toward the discharge port, that is, the closer to the discharge port, the fewer corn kernels on the corn cob and the smaller the overall outer diameter. Therefore, in this scheme, the inner wall spacing is smaller as it is closer to the discharge port, so that the corn kernels on the corn cob can be completely and fully threshed.

[0007] Preferably, the inner wall of the threshing cylinder is at the same axial position, and the closer it is to the top, the closer the distance to the outer wall of the inner roller is. This structure can make the corn be moved upward by the inner roller when the diameter of the unthreshed corn is large, and gradually move downward after threshing, so as to completely thresh the corn on the corncob.

[0008] Preferably, the stripping protrusions include several groups, and each group of stripping protrusions is spirally distributed on the outer wall of the inner roller. The spiral structure can form a function similar to an auger structure to axially transport the corn cobs and prevent the corn cobs from piling up in the threshing cylinder.

[0009] Preferably, the stripping protrusions include a middle strip protrusion and particle protrusions on both sides. The particle protrusions can thresh corn kernels more easily, and the strip protrusions can thresh corn kernels more thoroughly to avoid omissions.

[0010] Preferably, the inner wall of the threshing cylinder is axially provided with a guide protrusion, which can increase the friction force when the inner roller rotates and rubs the corn cob, facilitating corn threshing, and can cooperate with the spirally distributed peeling protrusion to push the corn cob to move toward the discharge port.

[0011] Preferably, the lower side wall of the threshing cylinder is provided with a plurality of axially parallel guide rods. The guide rods can provide the function of guiding protrusions on the one hand, and the device structure can play the role of filtering on the other hand, so that the corn kernels can fall downwards conveniently.

[0012] Preferably, the spacing of the guide rods is smaller than the diameter of the corn cob after threshing and larger than the outer diameter of the corn kernels, so that the corn kernels can pass through, the corn cobs are retained inside the threshing cylinder, and finally discharged from the discharge port.

[0013] Preferably, the two ends of the inner roller are connected to the inside of the threshing drum through an inner bracket, so as to better stabilize the inner roller and improve its overall strength.

[0014] Preferably, the threshing cylinder comprises a spreading section near the feed inlet and a stripping section near the discharge outlet, and the inner roller is located in the stripping section. The spreading section is used to adjust the direction of the corn cobs when they slide so that they are distributed axially as much as possible.

[0015] Preferably, a vibrator is provided on the outer wall of the material laying section to facilitate the axial distribution of the corn cobs.

[0016] Beneficial effects of the utility model:

[0017] Through this solution, corn can be completely and fully de-threshed, and the change of the outer diameter of the de-threshed corn cobs can be automatically adapted. The de-threshing is complete and the efficiency is very high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only two of the drawings of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of an embodiment of the utility model;

[0020] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model;

[0021] Among them, 1. threshing cylinder; 2. feed port; 3. discharge port; 4. inner roller; 5. inner bracket; 6. motor; 7. strip protrusion; 8. particle protrusion; 9. guide rod. DETAILED DESCRIPTION

[0022] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

[0023] Example

[0024] like Figure 1 As shown, a corn threshing device comprises a threshing cylinder 1 and an inner roller 4; the two ends of the threshing cylinder 1 are respectively a feed port 2 and a discharge port 3, the inner wall of the threshing cylinder 1 is inclined, wherein the feed port 2 is higher than the discharge port 3, an inner roller 4 is axially arranged inside the threshing cylinder 1, the inner roller 4 is rotatably arranged relative to the threshing cylinder 1, the outer wall of the inner roller 4 is provided with a stripping protrusion, and the distance between the outer wall of the inner roller 4 and the inner wall of the threshing cylinder 1 is smaller as the end closer to the discharge port 3.

[0025] The threshing drum 1 of the present scheme is tilted so that the corn cobs enter from the feed port 2 and are then discharged from the discharge port 3. When inside the threshing drum 1, they pass through the inner roller 4. Since the outer wall of the inner roller 4 is provided with a stripping protrusion, the rotating inner roller 4 will rub and squeeze the corn kernels to separate the threshes. The corn is not completely threshed, but is gradually threshed in the process of moving toward the discharge port 3, that is, the closer to the discharge port 3, the fewer corn kernels on the corn cob and the smaller the overall outer diameter. Therefore, in the present scheme, the inner wall spacing is smaller as it is closer to the discharge port 3, so that the corn kernels on the corn cob can be completely and fully threshed.

[0026] The inner wall of the threshing cylinder 1 is at the same axial position, and the closer it is to the top, the closer the distance to the outer wall of the inner roller 4. This structure can make the corn be moved upward by the inner roller 4 when the diameter of the corn is large before threshing, and gradually move downward after threshing, so as to completely thresh the corn on the corncob.

[0027] The stripping protrusions include several groups, and each group of stripping protrusions is spirally distributed on the outer wall of the inner roller 4. The spiral structure can form a function similar to an auger structure to axially transport the corn cobs and prevent the corn cobs from piling up in the threshing cylinder 1.

[0028] The stripping protrusions include a middle strip protrusion 7 and particle protrusions 8 on both sides. The particle protrusions 8 can thresh corn kernels more easily, and the strip protrusions 7 can thresh corn kernels more thoroughly to avoid omissions. A guide protrusion is axially arranged on the inner wall of the threshing cylinder 1. On the one hand, it can increase the friction force when the inner roller 4 rotates and rubs the corn cob, which is convenient for corn threshing. On the other hand, it can cooperate with the spirally distributed stripping protrusions to push the corn cob to move toward the discharge port 3.

[0029] The lower side wall of the threshing cylinder 1 is provided by a plurality of axially parallel guide rods 9. The guide rods 9 can provide the function of guiding protrusions on the one hand, and the device structure can play the role of filtering on the other hand, which can facilitate the corn kernels to fall downward. Of course, in order to increase the friction force, the outer wall of the guide rod 9 can be provided with knurling.

[0030] The spacing of the guide rods 9 is smaller than the diameter of the corn cob after threshing and larger than the outer diameter of the corn kernels, so that the corn kernels can pass through, the corn cobs are retained inside the threshing cylinder 1, and finally discharged from the discharge port 3.

[0031] The two ends of the inner roller 4 are connected to the inside of the threshing cylinder 1 through the inner bracket 5, so as to better stabilize the inner roller 4 and improve its overall strength.

[0032] The threshing drum 1 comprises a material spreading section near the feed port 2 and a material stripping section near the discharge port 3, and the inner roller 4 is located in the material stripping section. The material spreading section is used to adjust the direction of the corn cobs when they slide so that they are distributed in the axial direction as much as possible.

[0033] The outer wall of the material spreading section is provided with a vibrator, so as to facilitate the axial distribution of the corn cobs.

[0034] The corn-related sizes mentioned in this embodiment are all average sizes of corn that needs to be threshed, and a batch of corn can be sampled in advance for measurement.

[0035] Beneficial effects of the utility model:

[0036] Through this solution, corn can be completely and fully de-threshed, and the change of the outer diameter of the de-threshed corn cobs can be automatically adapted. The de-threshing is complete and the efficiency is very high.

[0037] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A corn threshing device, characterized in that: It comprises a threshing cylinder (1) and an inner roller (4); The two ends of the threshing cylinder (1) are respectively a feed port (2) and a discharge port (3); the inner wall of the threshing cylinder (1) is arranged at an inclination, wherein the feed port (2) is higher than the discharge port (3); an inner roller (4) is arranged in the inner axial direction of the threshing cylinder (1); the inner roller (4) is arranged to rotate relative to the threshing cylinder (1); a threshing protrusion is arranged on the outer wall of the inner roller (4); and the distance between the outer wall of the inner roller (4) and the inner wall of the threshing cylinder (1) becomes smaller as the end is closer to the discharge port (3).

2. A corn threshing device according to claim 1, characterized in that: The inner wall of the threshing cylinder (1) is at the same axial position, and the closer it is to the top, the closer the distance to the outer wall of the inner roller (4) is.

3. A corn threshing device according to claim 1, characterized in that: The grain stripping protrusions include a plurality of groups, and each group of grain stripping protrusions is distributed in a spiral shape on the outer wall of the inner roller (4).

4. A corn threshing device according to claim 3, characterized in that: The stripping protrusions include a middle strip protrusion (7) and particle protrusions (8) on both sides.

5. A corn threshing device according to claim 1, characterized in that: A guide protrusion is axially arranged on the inner wall of the threshing cylinder (1).

6. A corn threshing device according to claim 1, characterized in that: The lower side wall of the threshing cylinder (1) is provided by a plurality of axially parallel guide rods (9).

7. A corn threshing device according to claim 6, characterized in that: The spacing between the guide rods (9) is smaller than the diameter of the corn cob after threshing and larger than the outer diameter of the corn kernels.

8. A corn threshing device according to claim 1, characterized in that: The two ends of the inner roller (4) are connected to the inside of the threshing drum (1) via an inner bracket (5).

9. A corn threshing device according to claim 1, characterized in that: The threshing drum (1) comprises a material laying section close to a material inlet (2) and a material stripping section close to a material outlet (3), and the inner roller (4) is located in the material stripping section.

10. A corn threshing device according to claim 9, characterized in that: The outer wall of the paving section is provided with a vibrator.

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