CN218244558U

CN218244558U - Corn thresher

Info

Publication number: CN218244558U
Application number: CN202222825250.1U
Authority: CN
Inventors: 月中耀; 曾富洪
Original assignee: Panzhihua University
Current assignee: Panzhihua University
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-01-10
Anticipated expiration: 2032-10-26

Abstract

The utility model relates to a corn thresher belongs to agricultural product processing technology field. The device comprises a screen (4) and a rotary drum (9), wherein a plurality of flail knives (91) are arranged on the rotary drum (9) at intervals, the flail knives (91) are spirally hinged on the rotary drum (9), a feeding end of the rotary drum (9) is provided with a feeding chute (3), the cross section of the screen (4) is of a U-shaped structure, and the rotary drum (9) is arranged in the screen (4) and is arranged at intervals with the screen (4). The device drives the rotary drum (9) to rotate to drive the flail knife (91) to beat corn ears, and the corn ears are crushed, threshed and vibrated. The corn cob is discharged out of the machine body from the discharge end by virtue of the spiral thrust and the spiral guiding action of the flail knives (91) which are spirally arranged on the rotary drum (9), so that the separation of the corn kernels and the corn cobs is realized. Solves the problems that the prior equipment has low threshing efficiency, the threshed corncobs have residual corncobs and the corncobs are easy to damage.

Description

Corn thresher

Technical Field

The utility model relates to a corn thresher belongs to agricultural product processing technology field.

Background

Corn thresher is a mechanical device who threshes the corn ear, and is high-speed rotatory through the rotor, collides between impact head and the kernel of corn to reach the effect of threshing, can help people quick thresh the processing to the corn, traditional single-cylinder corn thresher is when threshing the corn, and threshing effect is poor, remains the kernel of corn on the corncob after threshing, and threshing efficiency is lower, can not satisfy the market demand.

Meanwhile, the threshing of the corn of the traditional corn thresher can only adopt a common thresher designed by a beating principle, the rotating speed of a roller of various traditional common types is more than 700r/min, the linear speed of the outer edge (top of a plate tooth) of the roller is more than 8m/s, the corn ears are beaten by nail teeth or narrow plate teeth at a high speed to realize threshing, and the damage to the corn grains is large. Meanwhile, the common threshing machine has low individual main performance indexes and high breakage rate (> 1%) determined by the threshing principle, so that corn seed production enterprises are troubled by large loss of threshing links for many years. The corn seed production amount of each year in China is about 180 ten thousand tons, and the loss increase value is calculated according to 0.5 percent, so that 0.9 ten thousand tons of corn kernels are lost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the existing equipment is low in threshing efficiency, and the corn kernels are remained on the corn cobs after threshing, and are easy to damage.

The utility model provides a technical scheme that its technical problem adopted is: the corn thresher comprises a screen and a rotary drum, wherein a plurality of flail knives are arranged on the rotary drum at intervals, the flail knives are spirally hinged on the rotary drum, a feeding chute is arranged at the feeding end of the rotary drum, the cross section of the screen is of a U-shaped structure, and the rotary drum is arranged in the screen and is arranged at intervals with the screen.

Wherein, the interval between adjacent flail knives among the above-mentioned device reduces along rotatory cylinder feed end to discharge end in proper order.

Further, the distance between the adjacent flail knives at the feeding end of the rotary drum in the device is 2 to 4 times that between the adjacent flail knives at the discharging end of the rotary drum.

The section of the rotary drum in the device is of a triangular structure, and the flail knife is arranged at the edge of the outer edge of the rotary drum.

Furthermore, the flail knife at the outer edge of any rotary drum in the device is at least one piece and is connected at the outer edge of the rotary drum through a fixing pin.

Wherein, the discharge end of the rotary drum in the device is obliquely provided with a discharge chute.

Wherein, the lower sliding plate that the below of screen cloth was provided with the slope and set up among the above-mentioned device, and the horizontal height that the lower sliding plate is located the feed end below is less than the discharge end below.

The device further comprises a fan and a rack, wherein the fan is rotatably arranged on the rack, and the fan is arranged below the screen and towards the discharge end of the rotary drum.

Further, the device also comprises a driving motor, wherein the driving motor is arranged on the rack, and the driving motor and the rotary drum are driven by a belt wheel and a belt.

Furthermore, the rotating shaft ends of the rotating drum, the driving motor and the fan in the device are provided with belt grooves, the driving motor 5 and the rotating drum are in belt transmission, and the driving motor and the fan are in belt transmission.

The utility model has the advantages that: the device has simple structure, and drives the flail knife to hit the corn ear by driving the rotary drum to rotate, so as to crush, thresh and vibrate the corn ear. The corncobs are discharged out of the machine body from the discharge end by virtue of the spiral thrust and the spiral guide action of the flail knives spirally arranged on the rotary drum, so that the separation of the corn kernels and the corncobs is realized. The flail knife is arranged on the rotary roller, the motor drives the transmission shaft to rotate at a high speed to provide spiral thrust and a guiding effect, so that corncobs are discharged, the cleaning fan rotating at a high speed can well discharge corncobs and impurities, and the threshing purity and efficiency are effectively improved; meanwhile, the inclined feeding port can not cause the fallen corns to damage the flail knife and can not cause the threshing structure to idle, thereby improving the efficiency.

Drawings

FIG. 1 is a schematic view of the partial cross-sectional structure of the present invention;

FIG. 2 is a left side view of the structure of the present invention;

FIG. 3 is an enlarged view of the structure at II in FIG. 2 according to the present invention;

FIG. 4 is an enlarged schematic view of the structure at the point I in FIG. 1 according to the present invention;

fig. 5 isbase:Sub>A schematic view of the cross-sectional structurebase:Sub>A-base:Sub>A of fig. 1 according to the present invention.

Labeled as: 1 is a frame, 2 is a discharge chute, 3 is a feeding chute, 4 is a screen, 5 is a driving motor, 6 is a belt, 7 is a lower sliding plate, 8 is a fan, 9 is a rotary drum, 91 is a flail knife, and 92 is a fixed pin.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 to 5, the corn thresher of the present invention comprises a screen 4 and a rotary drum 9, a plurality of flail knives 91 are arranged on the rotary drum 9 at intervals, the flail knives 91 are spirally hinged on the rotary drum 9, the feeding end of the rotary drum 9 is provided with a feeding chute 3, the cross section of the screen 4 is of a U-shaped structure, the rotary drum 9 is arranged in the screen 4 and is arranged at intervals with the screen 4. As will be appreciated by those skilled in the art, the flail knife 91 is a metal plate with a thickness similar to a hammer rather than a blade structure, which avoids breaking the corn kernels. In order to reduce the impact of corn on the rotary drum 9 during feeding, the feeding chute 3 is preferably arranged at the feeding end of the rotary drum 9, and the inclined feeding port does not damage the flail knife 91 and cause the threshing structure to idle, thereby improving the efficiency. The screen 4 is mainly used for screening corncobs and corn kernels, so the cross section of the screen 4 is preferably of a U-shaped structure, the rotary drum 9 is arranged in the screen 4 and is arranged at an interval with the screen 4, the flail knife 91 on the rotary drum 9 is arranged at an interval with the screen 4 after rotating, the interval is smaller than the size of the corncobs, and the flail knife 91 is spirally arranged, so that the corncobs can be discharged out of the machine body from the discharge end under the spiral thrust and spiral guide effect of the flail knife 91, and the corn kernels fall off through the screen 4 to the lower sliding plate 7 below, and the separation of the corncobs and the corncobs is realized. And the speed of the rotary drum 9 of the device can be reduced to 500r/min, and the corn kernels can be greatly reduced to be damaged under the condition that the corn kernels fall off.

Preferably, the distance between adjacent flail knives 91 in the above device decreases in sequence from the feed end to the discharge end of the rotary drum 9. As will be appreciated by those skilled in the art, because of the large number of corn cobs available at the feed end, to avoid the large motor load caused by stacking, it is preferred that the spacing between adjacent flail knives 91 decreases from the feed end to the discharge end of the rotating drum 9, i.e., the pitch decreases axially.

Preferably, in the above device, the distance between the adjacent flail knives 91 at the feeding end of the rotary drum 9 is 2 to 4 times the distance between the adjacent flail knives 91 at the discharging end of the rotary drum 9. As can be understood by those skilled in the art, the device only prefers that the distance between the adjacent flail knives 91 at the feeding end of the rotary drum 9 is 2 to 4 times the distance between the adjacent flail knives 91 at the discharging end of the rotary drum 9, so as to ensure the threshing efficiency.

Preferably, in the above device, the section of the rotary drum 9 is a triangular structure, and the flail knife 91 is arranged at the edge of the outer edge of the rotary drum 9. It will be appreciated by those skilled in the art that the present apparatus is only preferred for the configuration of the rotating drum 9, i.e. the cross-section is triangular, and that the flail knife 91 is actually provided at the outer edge of the rotating drum 9.

Preferably, the flail knife 91 at the peripheral edge of any one of the rotary drums 9 in the above-mentioned device is at least one piece and is connected at the peripheral edge of the rotary drum 9 by a fixing pin 92. As will be appreciated by those skilled in the art, in order to increase the threshing efficiency, the device preferably has at least one, preferably three flail knives 91 at the outer edge of any rotating drum 9, and the flail knives are of different lengths. And is connected at the outer circumferential edge of the rotary drum 9 by a fixing pin 92, i.e., is hinge-coupled.

Preferably, the discharge end of the rotary drum 9 in the device is provided with a discharge chute 2 in an inclined manner. As will be appreciated by those skilled in the art, to facilitate the collection of the corn cobs, the apparatus is preferably provided with a discharge chute 2 at the discharge end of the rotary drum 9, so that the corn cobs exit the housing 1 through the discharge chute 2 for collection.

Preferably, a lower sliding plate 7 is obliquely arranged below the screen 4 in the device, and the horizontal height of the lower sliding plate 7 below the feeding end is lower than that below the discharging end. As will be appreciated by those skilled in the art, in order to collect the corn kernels, the device is preferably provided with a lower slide plate 7 arranged obliquely below the screen 4, and the lower slide plate 7 is preferably arranged at a lower level below the feeding end than below the discharging end, i.e. opposite to the inclination of the discharging chute 2, so that the left end of the device collects the corn cobs, while the right end can be used for collecting the corn kernels. But the preferred blown down tank 2 is the orifice plate structure with 7 lower extremes of lower slide, and the through-hole of 2 lower extremes of blown down tank and kernel of corn size adaptation for the screening is with the kernel of corn discharge in the lump. And the through hole at the lower end of the lower sliding plate 7 is used for discharging fine corncob impurities, so that the cleanness of the corncobs is ensured.

Preferably, the device further comprises a fan 8 and a frame 1, wherein the fan 8 is rotatably arranged on the frame 1, and the fan 8 is arranged below the screen 4 and towards the discharge end of the rotary drum 9. As can be understood by those skilled in the art, the corn kernels falling from the screen 4 are further screened by the fan 8, and impurities falling together with the corn kernels are blown away by the fan 8. Specifically, the fan 8 is rotatably arranged on the frame 1, and the fan 8 is arranged below the screen 4 and towards the discharge end of the rotary drum 9.

Preferably, the device further comprises a driving motor 5, the driving motor 5 is arranged on the frame 1, and the driving motor 5 and the rotary drum 9 are driven by a belt 6. As will be appreciated by those skilled in the art, it is preferable that the driving motor 5 is provided on the frame 1 for the convenience of driving the rotary drum 9 to rotate, and the driving motor 5 and the rotary drum 9 are driven by the belt 6.

Preferably, the rotating shaft ends of the rotating drum 9, the driving motor 5 and the fan 8 in the device are all provided with belt grooves, the driving motor 5 and the rotating drum 9 are driven by a belt 6, and the driving motor 5 and the fan 8 are driven by the belt 6. As will be understood by those skilled in the art, in order to ensure the compactness of the device, it is preferable that the rotating shafts of the rotating drum 9, the driving motor 5 and the fan 8 are provided with belt grooves, and the driving motor 5 and the rotating drum 9 are driven by the belt 6 and the driving motor 5 and the fan 8 are driven by the belt 6. That is, the motor can drive the rotary drum 9 and the fan 8 to rotate at the same time.

Claims

1. Corn thresher, including screen cloth (4) and rotary drum (9), its characterized in that: the rotary drum type screen cloth is characterized in that a plurality of flail knives (91) are arranged on the rotary drum (9) at intervals, the flail knives (91) are spirally hinged to the rotary drum (9), a feeding chute (3) is arranged at the feeding end of the rotary drum (9), the cross section of the screen cloth (4) is of a U-shaped structure, and the rotary drum (9) is arranged in the screen cloth (4) and is arranged at intervals with the screen cloth (4).

2. The corn thresher of claim 1, wherein: the distance between the adjacent flail knives (91) is reduced from the feeding end to the discharging end of the rotary drum (9) in sequence.

3. The corn thresher of claim 2, wherein: the distance between the adjacent flail knives (91) at the feeding end of the rotary drum (9) is 2-4 times that between the adjacent flail knives (91) at the discharging end of the rotary drum (9).

4. A corn thresher according to any one of claims 1 to 3, wherein: the section of the rotary drum (9) is of a triangular structure, and the flail knife (91) is arranged at the edge of the outer edge of the rotary drum (9).

5. The corn thresher of claim 4, wherein: the flail knife (91) at the outer edge of any rotary drum (9) is at least one piece and is connected at the outer edge of the rotary drum (9) through a fixing pin (92).

6. The corn thresher of claim 1, wherein: the discharge end of the rotary drum (9) is obliquely provided with a discharge chute (2).

7. The corn thresher of claim 1, wherein: the lower sliding plate (7) is obliquely arranged below the screen (4), and the horizontal height of the lower sliding plate (7) below the feeding end is lower than that below the discharging end.

8. The corn thresher of claim 1, wherein: still include fan (8) and frame (1), fan (8) rotate to set up in frame (1), and fan (8) set up in screen cloth (4) below and towards rotary drum (9) discharge end setting.

9. The corn thresher of claim 8, wherein: the automatic feeding machine is characterized by further comprising a driving motor (5), wherein the driving motor (5) is arranged on the rack (1), and the driving motor (5) and the rotary drum (9) are in belt transmission through a belt wheel.

10. The corn thresher of claim 9, wherein: the rotating shaft ends of the rotating drum (9), the driving motor (5) and the fan (8) are provided with belt grooves, the driving motor (5) and the rotating drum (9) are in belt transmission, and the driving motor (5) and the fan (8) are in belt transmission.