A corn thresher for corn starch production
By combining the threshing roller and the guide roller, the problem of roller wear and deformation in corn threshers is solved, achieving efficient corn threshing and extending the service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN NANHAI HUAHAO HUAFENG STARCH CO LTD
- Filing Date
- 2025-06-28
- Publication Date
- 2026-06-30
AI Technical Summary
In existing corn threshers, the impact between the drum and the corn cob causes wear and deformation of the drum.
The system employs a combination structure of threshing roller and guide roller. The corn cobs are threshed by the relative movement of the threshing roller and guide roller, avoiding direct impact between the drum and the corn cobs. The drum contains a threshing roller and a guide roller. The outer surface of the threshing roller is equipped with toothed nails, textures, or spiral protrusions. The guide roller passes through the center of the threshing roller combination to guide and thresh the corn cobs.
It effectively prevents roller wear and deformation, improves threshing efficiency, has a simple and reasonable structural design, reduces mechanical wear, and extends the service life of the equipment.
Smart Images

Figure CN224419432U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of corn threshers, and specifically relates to a corn thresher for corn starch. Background Technology
[0002] Currently, a corn thresher is a machine used to separate corn kernels from corn cobs. It is widely used in the production of corn products and can significantly improve threshing efficiency and reduce manual labor intensity.
[0003] The threshing process of a corn thresher mainly relies on mechanical force (such as striking, friction, and squeezing) to separate corn kernels from the corn cob (cob). However, the corn thresher uses a high-speed rotating threshing drum (with toothed spikes, textures, or spiral protrusions on its surface) to repeatedly strike the corn cob, causing the corn kernels to fall off the cob. The centrifugal force generated when the drum rotates throws the fallen corn kernels out and they fall through the sieve holes into the collection device, while the corn cob, due to its larger size, is blocked by the sieve and discharged from the other end.
[0004] However, the above structure uses a rotating drum to strike the corn cob, and the impact between the drum and the corn cob causes the drum to wear and deform. Utility Model Content
[0005] This utility model proposes a corn thresher for corn starch production. The corn thresher includes a base, a drum, a threshing roller, and a guide roller. The drum is located on one side of the base, and the threshing roller and guide roller are located inside the drum. Multiple threshing rollers are provided, and the combination of multiple threshing rollers forms a circular shape. The guide roller passes through the center of the combination of multiple threshing rollers. In this corn thresher, corn cobs are threshed by passing between the threshing roller and the guide roller, thus solving the problems mentioned in the background art of the prior art.
[0006] The technical solution of this utility model is implemented as follows: The corn thresher includes:
[0007] Base: The base has a chassis on one side and a fixing plate on the other side;
[0008] The chassis is provided with a discharge port at one end;
[0009] A movable collection box is provided between the chassis and the fixed plate;
[0010] The fixed plate is provided with a protruding positioning seat and positioning rod on one side;
[0011] Preferably, the chassis has a hollow interior that communicates with the discharge port.
[0012] Preferably, one end of the chassis is conical, and the discharge port is located at the conical end;
[0013] Preferably, the collection box has a handle on one side and a groove at its bottom, and the groove is symmetrical. The collection box is connected to the frame of the base through the groove.
[0014] Preferably, the bottom surface of the collection box may be provided with pulleys;
[0015] A roller, which is located on top of the chassis;
[0016] One end of the roller is provided with a feeding end;
[0017] A reinforcing plate is provided between the roller and the feed end, and a fixing block is provided on the outer periphery of the roller;
[0018] The bottom of the drum is provided with multiple filter holes;
[0019] The feed end has a feed inlet on one side and a cover plate on the other side;
[0020] The feed end is provided with a through groove.
[0021] One end of the feed end is provided with a guide shaft hole;
[0022] The reinforcing plate has a first through hole at its center, which communicates with the through groove;
[0023] Preferably, the fixing block is connected to the locking hole provided on the chassis by means of a locking hole;
[0024] Preferably, the filter holes are opposite to the interior of the chassis;
[0025] Preferably, a first positioning groove is provided on one side of the reinforcing plate;
[0026] The bearing housing is located at the other end of the drum;
[0027] The bearing housing is provided with a second through hole in the middle;
[0028] The bearing housing is provided with a second positioning hole and a first groove on one side, and a locking hole and a second groove on the other side;
[0029] The bearing housing has a transmission groove on one side of its outer perimeter, and the transmission groove is connected to the transmission belt;
[0030] Preferably, the bearing housing is connected to one end of the roller via a first groove;
[0031] Preferably, the bearing housing is connected to one end of the positioning rod via a second groove;
[0032] Preferably, the second positioning hole penetrates both sides of the bearing housing;
[0033] A threshing roller, one end of which passes through a first positioning hole and the other end of which passes through a second positioning hole;
[0034] The threshing roller is provided with a flange at one end, and a lock hole is provided on one side of the flange;
[0035] Preferably, the threshing roller is connected to the locking hole of the bearing housing by bolts through the locking hole provided on the flange;
[0036] Preferably, the threshing rollers are provided in multiple forms, and the combination of the multiple rollers forms a circular shape;
[0037] The guide roller has one end inserted through a hole in the positioning seat and the other end inserted through a bearing in the motor.
[0038] The guide roller is positioned at the center of a combination of multiple threshing rollers;
[0039] The bearings provided with the motor pass through the inside of the guide shaft hole;
[0040] Preferably, one end of the guide roller is connected to a bearing provided with the motor via a key block;
[0041] Preferably, the motor is connected to the locking hole at the feed end via bolts.
[0042] Preferably, the outer surface of the guide roller and threshing roller is provided with toothed spikes, textures or spiral protrusions.
[0043] Briefly describe the working principle;
[0044] In use, corn cobs are placed into the feed end manually or by equipment. The corn cobs are guided into the drum by rotating guide rollers. The drum contains multiple threshing rollers, with the guide rollers positioned at the center of this assembly. As the corn cobs are introduced into the drum, they are threshed by the impact of the guide rollers against the threshing rollers. The threshed kernels fall into filter holes at the bottom of the drum, which are aligned with the interior of the base. The threshed kernels then exit from the discharge port on the base. Discharge; one end of the guide roller is located in the positioning seat provided by the fixed plate, and a collection box is provided between the fixed plate and the roller. The guide roller has the function of both introducing and leading out. However, the corn cobs that have been threshed fall into the collection box through the lead-out of the guide roller. The corn thresher of this application uses a threshing roller and a guide roller to strike the corn cobs to form a corn cob threshing process. It has the effect of changing the structure of the corn thresher which uses a roller and a threshing roller to strike the corn cobs to form a threshing process, and achieving the effect of preventing roller wear and deformation.
[0045] After adopting the above technical solution, the beneficial effects of this utility model are: its structural design is simple and reasonable, and it has the effect of preventing roller wear and deformation; the corn thresher includes a base, a roller, a threshing roller and a guide roller. A chassis is provided on one side of the base, a discharge port is provided on one side of the chassis, and a roller is provided on the other side. The roller is provided with a threshing roller and a guide roller inside. There are multiple threshing rollers, which are combined to form a circular shape. The guide roller is inserted through the center of the combination of multiple threshing rollers. The guide roller has the function of introducing and guiding the corn cobs. The outer surfaces of the threshing roller and the guide roller are provided with toothed nails, textures or spiral protrusions. The corn cobs pass between the threshing roller and the guide roller, which helps the corn cobs to be threshed by the combination of the threshing roller and the guide roller, thus achieving the effect of preventing roller wear and deformation. Attached Figure Description
[0046] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0047] Figure 1 This is a schematic diagram of the overall structure of the corn thresher of this utility model.
[0048] Figure 2 This is an exploded view of the overall structure of the corn thresher of this utility model.
[0049] Figure 3 This is a cross-sectional view of the overall structure of the roller of this utility model.
[0050] Figure 4 This is a schematic diagram of the overall structure of the threshing roller of this utility model.
[0051] Figure 5 This is a schematic diagram of the overall structure of the guide roller of this utility model.
[0052] Figure 6 This is a schematic diagram of the overall structure of the bearing housing of this utility model from the front.
[0053] Figure 7 This is a schematic diagram of the overall structure of the bearing housing on the back of this utility model.
[0054] Figure 8 This is a schematic diagram of the overall structure of the base of this utility model. Detailed Implementation
[0055] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0056] Example 1:
[0057] like Figures 1-8 As shown: The corn thresher includes a base 2, a drum 3, a threshing roller 5, and a guide roller 6. A base 20 is located on one side of the base 2, and a discharge port 200 is located on one side of the base 20. A drum 3 is located on the other side. The drum 3 contains multiple threshing rollers 5 arranged in a circular shape. The guide roller 6 passes through the center of the combination of multiple threshing rollers 5, and serves to guide the corn cobs in and out. Both the threshing rollers 5 and the guide roller 6 have toothed spikes, textures, or spiral protrusions on their outer surfaces. The corn cobs pass between the threshing rollers 5 and the guide roller 6, facilitating threshing by the combined impact of the threshing rollers 5 and the guide roller 6. This design changes the corn thresher's previous method of using a drum 3 and threshing rollers 5 to impact the corn cobs, thus preventing wear and deformation of the drum 3.
[0058] like Figures 1-2 As shown: A base 20 is provided on one side of the base 2, and a roller 3 is provided on the top of the base 20. A fixing block 32 is provided on the outer periphery of the roller 3. The fixing block 32 is connected to the locking hole provided on the base 20 by a locking hole provided therein, and the locking hole provided on the fixing block 32 is connected to the locking hole provided on the base 20 by bolts. However, the roller 3 is fixed on the top of the base 20.
[0059] like Figures 1-3 As shown: One end of the roller 3 is provided with a feeding end 30, and a feeding port 301 is provided on one side of the feeding end 30. When in use, corn cobs are put into the feeding end 30 manually or by equipment, and the corn cobs enter the interior of the roller 3 from the feeding end 30.
[0060] like Figure 1 , Figure 6 As shown: The bearing seat 4 is located at the other end of the drum 3. The bearing seat 4 has a first groove 42, and the bearing seat 4 is connected to one end of the drum 3 through the first groove 42.
[0061] A second positioning hole 41 is provided on the same side of the bearing housing 4, and the second positioning hole 41 penetrates both sides of the bearing housing 4.
[0062] like Figure 8 As shown: A fixing plate 21 is provided on the other side of the base 2, and a protruding positioning rod 220 is provided on one side of the fixing plate 21;
[0063] like Figure 1 , Figure 7 As shown: The other side of the bearing seat 4 is provided with a locking hole and a second groove 43. The bearing seat 4 is connected to one end of the positioning rod 220 through the second groove 43. However, the bearing seat 4 is clamped between the roller 3 and the positioning rod 220, which helps the bearing seat 4 maintain stable rotation.
[0064] like Figure 3 As shown: A reinforcing plate 300 is provided between the roller 3 and the feed end 30, and a first positioning groove 3001 is provided on one side of the reinforcing plate 300;
[0065] like Figure 1 , Figure 4 As shown: One end of the threshing roller 5 passes through the first positioning hole 3001, and the other end passes through the second positioning hole 41. The connection between the threshing roller 5 and the first positioning hole 3001 is a connection between the shaft and the shaft hole. However, the threshing roller 5 can rotate. The connection between the threshing roller 5 and the second positioning hole 41 is a keyway connection structure. However, one end of the threshing roller 5 is provided with a flange 50. The threshing roller 5 is connected to the locking hole of the bearing seat 4 by bolts through the locking hole provided in the flange 50. The bearing seat 4 has a transmission groove 44 on one side of its outer circumference. The transmission groove 44 is connected to the transmission belt 45. The transmission belt 45 is connected to the bearing of the motor and cylinder (existing technology, not shown in the figure) provided on the outside. However, the bearing seat 4 realizes the structure of rotational movement.
[0066] Combining the above structure, the bearing seat 4 has the function of driving the threshing roller 5 to rotate, and the connection between the threshing roller 5 and the first positioning hole 3001 helps the threshing roller 5 to rotate between the reinforcing plate 300 and the bearing seat 4. The area between the reinforcing plate 300 and the bearing seat 4 also becomes the interior of the drum 3.
[0067] like Figure 2 As shown: There are multiple threshing rollers 5, and the combination of multiple rollers forms a circular shape. The guide roller 6 passes through the first through hole 3000 and the second through hole 40, and the guide roller 6 passes through the center of the combination of multiple threshing rollers 5.
[0068] like Figure 1 , Figure 5As shown: One end of the guide roller 6 passes through the hole provided in the positioning seat 210, which is located on one side of the fixed block 6 and is protruding. The other end of the guide roller 6 passes through the bearing provided in the motor 60. The guide roller 6 is connected to the bearing provided in the motor 60 by a key block 61. With the above structure, the connection between one end of the guide roller 6 and the shaft hole provided in the positioning seat 210 is a connection between the shaft and the shaft hole. However, the guide roller 6 can rotate. The guide roller 6 is connected to the bearing provided in the motor 60 through the key block 61. The guide roller 6 is driven by the motor 60 to achieve rotational movement.
[0069] Its first through hole 3000 is located in the center of the reinforcing plate 300, and the second through hole 40 is located in the middle of the bearing seat 4. However, one end of the guide roller 6 is formed to pass through the inside of the feed end 30, and the other end is formed to pass through the inside of the drum 3.
[0070] like Figure 4 As shown: The feed end 30 is provided with a guide shaft hole 304 at one end, and the bearing of the motor 60 passes through the inside of the guide shaft hole 304. The motor 60 is connected to the lock hole of the feed end 30 by bolts through the provided lock hole. However, the motor 60 and the feed end 30 form an integral structure, which helps to achieve the desired result.
[0071] The feed end 30 is provided with a through groove 303 inside, and the first through hole 3000 communicates with the through groove 303. The guide roller 6 is located in the middle of the first through hole 3000 and the through groove 303. When the guide roller 6 rotates, the corn cobs accumulated inside the feed end 30 are introduced into the space between the guide roller 6 and the threshing roller 5 by the guide roller 6. The outer surfaces of the guide roller 6 and the threshing roller 5 are provided with toothed nails, textures or spiral protrusions. The corn cobs are struck by the guide roller 6 and the threshing roller 5, which helps to separate the corn kernels from the corn cobs.
[0072] The detached corn kernels fall to the bottom of the drum 3. The bottom of the drum 3 is provided with multiple filter holes 31, which are opposite to the inside of the chassis 20. However, the corn kernels fall from the filter holes 31 into the inside of the chassis 20.
[0073] The chassis 20 has a hollow interior and a discharge port 200 at one end. The interior of the chassis 20 is connected to the discharge port 200. However, a storage box or storage bag can be installed opposite the discharge port 200 to help store corn kernels for corn starch production.
[0074] Example 2:
[0075] like Figure 3 As shown: A cover plate 302 is provided on the other side of the roller 3, such as Figures 1-3 As shown, the cover plate 302 and the feed inlet 301 are adjacent to each other, which reduces the problem of corn cobs falling out of the feed end 30 when they are introduced.
[0076] Example 3:
[0077] like Figure 8 As shown: One end of the chassis 20 is conical, and the discharge port 200 is located at the conical end. However, the bottom of the chassis 20 is also conical, and the internal cavity is also conical, which prevents corn kernels from accumulating inside the chassis 20.
[0078] Example 4:
[0079] like Figures 1-2 As shown: A movable collection box 22 is provided between the chassis 20 and the fixed plate 21. However, the corn cobs led out by the guide roller 6 fall into the collection box 22 through the second through hole 40 provided in the middle of the bearing seat 4.
[0080] The collection box 22 is provided with a handle 23 on one side, which facilitates the pushing and pulling of the collection box 22;
[0081] The bottom of the collection box 22 is provided with a groove, which is symmetrical. The collection box 22 is connected to the frame of the base 2 through the groove. The assembly of the collection box 22 and the base 2 forms a snap-fit structure, which helps to improve the stability of the collection box 22.
[0082] The bottom of the collection box 22 may be equipped with pulleys (not shown in the figure), which helps to make the collection box 22 easy to drag.
[0083] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A corn thresher for corn starch production, characterized in that: Base: The base has a chassis on one side and a fixing plate on the other side; A roller, which is located on top of the chassis; The roller has a feed end at one end, and a reinforcing plate is provided between the roller and the feed end; The reinforcing plate has a first positioning groove on one side and a first through hole in the center. The bearing housing is located at the other end of the drum; The bearing housing has a second positioning hole on one side and a second through hole in the middle. A threshing roller, one end of which passes through a first positioning hole and the other end of which passes through a second positioning hole; The threshing rollers are provided in multiple ways, and the combination of the multiple threshing rollers forms a circular shape; A guide roller is disposed at the center of a combination of a first through hole, a second through hole, and multiple threshing rollers.
2. A corn thresher for corn starch as described in claim 1, characterized in that: The threshing roller is provided with a flange at one end, and the threshing roller is connected to the bearing seat by the flange. The bearing seat is provided with a first groove on one side and a second groove on the other side. The bearing seat is connected to one end of the roller by the first groove.
3. A corn thresher for corn starch as described in claim 2, characterized in that: The chassis has a discharge port at one end.
4. A corn thresher for corn starch as described in claim 3, characterized in that: A movable collection box is provided between the chassis and the fixed plate. A protruding positioning seat and positioning rod are provided on one side of the fixed plate. The bearing seat is connected to one end of the positioning rod by a second groove.
5. A corn thresher for corn starch as described in claim 4, characterized in that: The bottom of the roller is provided with multiple filter holes.
6. A corn thresher for corn starch as described in claim 5, characterized in that: The feed end has a feed port on one side and a cover plate on the other side. The feed end has a through groove inside, and the first through hole communicates with the through groove.
7. A corn thresher for corn starch as described in claim 6, characterized in that: One end of the feed end is provided with a guide shaft hole, and the inside of the guide shaft hole is provided with a bearing for the motor.
8. A corn thresher for corn starch as described in claim 7, characterized in that: One end of the guide roller passes through a hole in the positioning seat, and the other end passes through a bearing in the motor.
9. A corn thresher for corn starch as described in claim 8, characterized in that: The outer surface of the guide roller and threshing roller is provided with toothed nails, textures or spiral protrusions.