Corn thresher with screening function

Abstract

The utility model discloses a corn thresher with a screening function, and relates to the technical field of corn threshers, the corn thresher comprises a shell, the inner wall of the shell is fixedly connected with a thresher, the heat preservation of the shell is provided with a screening mechanism, the screening mechanism comprises a motor, the outer wall of the motor is fixedly connected with the inner wall of the shell, and the outer wall of the motor is fixedly connected with the inner wall of the shell. The inner wall of the end, close to the motor, of the shell is rotationally connected with a plurality of transmission shafts, and the outer wall of the transmission shaft located on the outer side is fixedly connected with the output end of the bottom of the motor. And a connecting rod rotates to drive a connecting rod II to do eccentric circular motion around the transmission shaft, so that the threshed corn kernels can be screened while the corn is threshed, the corn kernels are reasonably utilized, and the utilization rate of resources is increased.

Description

Technical Field

[0001] This utility model belongs to the technical field of corn threshers, and in particular relates to a corn thresher with screening function. Background Technology

[0002] Corn threshers are a type of machinery commonly used in agricultural production. Their emergence has greatly saved manpower and resources, significantly changed people's work methods, and brought great convenience to people's lives.

[0003] According to the published patent CN207665542U, a corn thresher with screening function includes: a threshing chamber, which has a feeding channel, a discharge port, and a corn cob outlet; a threshing device, which includes a motor and a threshing shaft with blades; a discharge plate, which has corn kernel discharge holes; and a collection device, which includes a bottom plate, a corn kernel collection box, and a corn cob collection box. This device can achieve the screening and separation of corn kernels and corn cobs without the need for manual screening and separation, effectively saving labor and material costs. However, it still has the following shortcomings:

[0004] The aforementioned equipment simply screens corn kernels and cobs, resulting in poor screening quality. It cannot further screen and process the threshed corn kernels to separate plump and shriveled corn. Furthermore, the equipment may cause violent shaking during use, resulting in corn kernels flying out while threshing. Therefore, we propose a corn thresher with screening function. Utility Model Content

[0005] The purpose of this utility model is to provide a corn thresher with screening function. Through the screening mechanism and the protective mechanism, it solves the problem that the existing equipment only screens corn kernels and corn cobs, resulting in low screening quality and the inability to further screen and process the threshed corn kernels to separate plump and shriveled corn. In addition, the existing equipment may produce violent shaking during use, causing corn kernels to fly out during the threshing process.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a corn thresher with screening function, including a shell, a thresher fixedly connected to the inner wall of the shell, and a screening mechanism provided with heat preservation of the shell;

[0008] The screening mechanism includes a motor, the outer wall of which is fixedly connected to the inner wall of the housing. Several transmission shafts are rotatably connected to the inner wall of the housing near the motor. The outer wall of the transmission shaft located on the outer side is fixedly connected to the bottom output end of the motor. A connecting rod is fixedly connected to the outer wall of the transmission shaft. A second connecting rod is rotatably connected to the outer wall of the connecting rod. A fixed shaft is rotatably connected to the inner wall of the second connecting rod away from the connecting rod. A feed plate is rotatably connected to the outer wall of the fixed shaft.

[0009] Furthermore, the outer wall of the feeding plate is fixedly connected to several limiting shafts, and the outer walls of the several limiting shafts are rotatably connected to connecting rods.

[0010] Furthermore, the inner wall of the end of the connecting rod three away from the limiting shaft is rotatably connected to the limiting shaft two, the inner wall of the feeding plate is fixedly connected to the screen plate, and the outer wall of the housing is provided with a protective mechanism.

[0011] Furthermore, the protective mechanism includes several telescopic rods, the outer walls of which are fixedly connected to the bottom outer wall of the housing, and a base plate is fixedly connected to the bottom outer wall of each telescopic rod.

[0012] Furthermore, a number of springs are fixedly connected to the top outer wall of the bottom plate near the telescopic rod, and the outer walls of the springs are fixedly connected to the bottom outer wall of the housing. A number of sliding rods are fixedly connected to the top outer wall of the bottom plate.

[0013] Furthermore, a plurality of sliders are slidably connected to the outer wall of the slide rod, and a plurality of springs are fixedly connected to the outer wall of the sliders, with the outer walls of the springs being fixedly connected to the outer wall of the slide rod.

[0014] Furthermore, the inner wall of the slider is rotatably connected to several limiting shafts three, and the outer wall of the limiting shafts three is rotatably connected to a connecting rod four.

[0015] Furthermore, the inner wall of the end of each of the several connecting rods away from the limiting shaft three is rotatably connected to the limiting shaft four, and the outer wall of the limiting shaft four is rotatably connected to a fixing block, and the outer wall of the fixing block is fixedly connected to the bottom outer wall of the housing.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model, by setting a fixed shaft on the connecting rod two, allows the motor to rotate when the equipment is in use. This rotation drives the outer transmission shaft to rotate, causing the connecting rod as a whole to rotate, which in turn drives the inner transmission shaft to rotate. The rotation of the connecting rod causes the connecting rod two to make an eccentric circular motion around the transmission shaft, which in turn continuously pulls the fixed shaft to move. The movement of the fixed shaft drives the feeding plate to move, and the movement of the feeding plate drives the movement of the limiting shaft. At the same time, the connecting rod three moves around the limiting shaft two. This achieves the simultaneous threshing of corn and screening of the threshed corn kernels, separating plump and shriveled corn kernels. This facilitates subsequent processing of corn of different qualities by users, making reasonable use of corn kernels, improving resource utilization, and avoiding resource waste.

[0018] 2. This utility model incorporates a slider on the sliding rod. During operation, the thresher's startup can cause excessive shaking, and the feeding plate also vibrates. Therefore, shock absorption protection is necessary for the housing. The up-and-down shaking of the housing compresses multiple springs and telescopic rods, causing them to contract. Simultaneously, the housing movement drives the fixed block downwards, which in turn drives the fourth limiting shaft, ensuring that the fourth connecting rod can only move around the third limiting shaft. This achieves a certain degree of shock absorption protection, reducing the vibration amplitude of the equipment, making the corn threshing and screening process more stable, ensuring threshing quality and screening accuracy, reducing material splashing and screen clogging caused by vibration, and improving the stability and reliability of the equipment.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0024] Figure 4 This is a cross-sectional view of the protective mechanism of this utility model;

[0025] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Shell; 101. Threshing machine; 2. Screening mechanism; 201. Motor; 202. Drive shaft; 203. Connecting rod; 204. Connecting rod two; 205. Fixed shaft; 206. Feed plate; 207. Limiting shaft; 208. Connecting rod three; 209. Limiting shaft two; 210. Screen plate; 3. Protective mechanism; 301. Telescopic rod; 302. Spring; 303. Base plate; 304. Sliding rod; 305. Sliding block; 306. Spring two; 307. Limiting shaft three; 308. Connecting rod four; 309. Limiting shaft four; 310. Fixed block. Detailed Implementation

[0028] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-5 As shown, this utility model is a corn thresher with screening function, including a shell 1, a thresher 101 fixedly connected to the inner wall of the shell 1, and a screening mechanism 2 provided for heat preservation of the shell 1. When the user starts the thresher 101, the corn can be threshed.

[0030] The screening mechanism 2 includes a motor 201. The outer wall of the motor 201 is fixedly connected to the inner wall of the housing 1. Several transmission shafts 202 are rotatably connected to the inner wall of the housing 1 near the motor 201. The outer wall of the outer transmission shaft 202 is fixedly connected to the bottom output end of the motor 201. When the motor 201 is started, the rotation of the motor 201 will drive the outer transmission shaft 202 to rotate. The rotation of the outer connecting rod 203 will drive the connecting rod 203 to rotate, causing the right transmission shaft 202 to rotate. The right transmission shaft 202 can make the rotation process of the connecting rod 203 smoother. The outer wall of the transmission shaft 202 is fixedly connected to the connecting rod 203. The outer wall of the connecting rod 203 is rotatably connected to the connecting rod 204. The inner wall of the connecting rod 204 away from the connecting rod 203 is rotatably connected to the fixed shaft 205. The outer wall of the fixed shaft 205 is rotatably connected to the feed plate 206.

[0031] The outer wall of the feeding plate 206 is fixedly connected to several limiting shafts 207. Each limiting shaft 207 has a connecting rod 208 rotatably connected to its outer wall. The inner wall of the connecting rod 208 away from the limiting shaft 207 is rotatably connected to a limiting shaft 209. The position of the feeding plate 206 can be adjusted via a fixed shaft 205. When the connecting rod 204 moves, causing the fixed shaft 205 to move, the feeding plate 206 will move left and right. A screen plate 210 is fixedly connected to the inner wall of the feeding plate 206. A protective mechanism 3 is provided on the outer wall of the housing 1. The protective mechanism 3 includes several telescopic rods 3. 01. The outer walls of several telescopic rods 301 are fixedly connected to the bottom outer wall of the housing 1. The telescopic rods 301 can limit the movement trajectory of the springs 302 to prevent the springs 302 from breaking during the extension and retraction process. A base plate 303 is fixedly connected to the bottom outer wall of the telescopic rods 301. Several springs 302 are fixedly connected to the top outer wall of the end of the base plate 303 near the telescopic rods 301. Through the springs 302, when the housing 1 shakes up and down, the springs 302 will drive the housing 1 to return to its original position due to their own elasticity, thereby playing a certain role in shock absorption and protection of the housing 1.

[0032] The outer walls of several springs 302 are fixedly connected to the bottom outer wall of the housing 1. Several sliding rods 304 are fixedly connected to the top outer wall of the base plate 303. Several sliders 305 are slidably connected to the outer walls of the sliding rods 304. Several springs 306 are fixedly connected to the outer walls of the sliders 305. The sliding rods 304 can limit the movement trajectory of the sliders 305, so that they can only slide on the sliding rods 304, preventing the sliders 305 from falling. The outer walls of several springs 306 are fixedly connected to the outer walls of the sliding rods 304. Several limiting shafts 3 are rotatably connected to the inner walls of the sliders 305. 07. A connecting rod 308 is rotatably connected to the outer wall of the limiting shaft 307. The limiting shaft 307 can limit the position of the connecting rod 308, so that it can only move in a circle around the limiting shaft 307. The inner wall of the end of several connecting rods 308 away from the limiting shaft 307 is rotatably connected to the limiting shaft 309. The outer wall of the limiting shaft 309 is rotatably connected to the fixing block 310. The outer wall of the fixing block 310 is fixedly connected to the bottom outer wall of the housing 1. The position of the limiting shaft 309 can be fixed by the fixing block 310 to prevent the limiting shaft 309 from falling.

[0033] One specific application of this embodiment is:

[0034] When the equipment is needed, the thresher 101 and motor 201 are started. Corn is then placed into the housing 1. The thresher 101 separates the corn cobs from the kernels. The corn cobs are discharged from the upper outlet of the housing 1, while the heavier kernels fall onto the lower feed plate 206. The rotation of motor 201 drives the outer drive shaft 202, causing the connecting rod 203 to rotate. This, in turn, drives the inner drive shaft 202 to rotate. The rotation of connecting rod 203 causes connecting rod 204 to rotate around the drive shaft 202. 02. The eccentric circular motion continuously pulls the fixed shaft 205, which in turn drives the feeding plate 206. The movement of the feeding plate 206 drives the limiting shaft 207, while the connecting rod 208 moves around the limiting shaft 209. Because the limiting shaft 209 restricts the height and position of the limiting shaft 207, the feeding plate 206 can only sway left and right, screening the corn kernels on it. Fuller kernels and impurities such as corn silk are discharged from the feeding plate 206. The corn kernels are discharged from the upper outlet of 06, while the drier corn kernels pass through the screen plate 210 and can be discharged from another outlet at the lower end of the screen plate 210, thus achieving the screening of corn kernels. Since the thresher 101 will cause excessive shaking when it starts, and the feed plate 206 will also shake to a certain extent, it is necessary to protect the housing 1 from shock. When the housing 1 shakes up and down, it will compress multiple springs 302 and telescopic rods 301, causing them to contract. At the same time, the movement of the housing 1 will drive the fixed block 310. As the fixed block 310 moves downward, it drives the fourth limiting shaft 309 to move, causing the fourth connecting rod 308 to move only around the third limiting shaft 307. The movement of the third limiting shaft 307 drives the slider 305 to move. Since the base plate 303 limits the maximum range of the slider 305, the slider 305 can only press the second spring 306 inward to move. At this time, the second spring 306 and the spring 302 will drive the slider 305 and the housing 1 to reset due to their own elastic force, which can play a certain role in shock absorption of the housing 1 as a whole.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A maize thresher with a screening function, comprising a housing (1), characterized in that: The inner wall of the shell (1) is fixedly connected with a thresher (101), and the shell (1) is provided with a screening mechanism (2); The screening mechanism (2) comprises a motor (201), the outer wall of the motor (201) is fixedly connected with the inner wall of the shell (1), a plurality of transmission shafts (202) are rotatably connected to the inner wall of one end of the shell (1) close to the motor (201), the outer wall of the transmission shaft (202) located on the outer side is fixedly connected with the bottom output end of the motor (201), the outer wall of the transmission shaft (202) is fixedly connected with a connecting rod (203), the outer wall of the connecting rod (203) is rotatably connected with a connecting rod two (204), the inner wall of one end of the connecting rod two (204) away from the connecting rod (203) is rotatably connected with a fixed shaft (205), and the outer wall of the fixed shaft (205) is rotatably connected with a discharging plate (206).

2. A maize thresher with a screening function according to claim 1, characterized in that, The outer wall of the discharging plate (206) is fixedly connected with a plurality of limiting shafts (207), and the outer wall of each of the plurality of limiting shafts (207) is rotatably connected with a connecting rod three (208).

3. The maize thresher with a screening function according to claim 2, characterized in that, The inner wall of one end of the connecting rod three (208) away from the limiting shaft (207) is rotatably connected with a limiting shaft two (209), the inner wall of the discharging plate (206) is fixedly connected with a sieve plate (210), and the outer wall of the shell (1) is provided with a protection mechanism (3).

4. The corn thresher having a screening function according to claim 3, wherein, The protection mechanism (3) comprises a plurality of telescopic rods (301), the outer wall of each of the plurality of telescopic rods (301) is fixedly connected with the bottom outer wall of the shell (1), and the bottom outer wall of the telescopic rod (301) is fixedly connected with a bottom plate (303).

5. The maize thresher with a screening function according to claim 4, characterized in that, The top outer wall of one end of the bottom plate (303) close to the telescopic rod (301) is fixedly connected with a plurality of springs (302), the outer wall of each of the plurality of springs (302) is fixedly connected with the bottom outer wall of the shell (1), and the top outer wall of the bottom plate (303) is fixedly connected with a plurality of slide rods (304).

6. The maize thresher with a screening function according to claim 5, characterized in that, The outer wall of the slide rod (304) is slidably connected with a plurality of sliding blocks (305), the outer wall of the sliding block (305) is fixedly connected with a plurality of spring two (306), and the outer wall of each of the plurality of spring two (306) is fixedly connected with the outer wall of the slide rod (304).

7. The maize thresher with a screening function according to claim 6, characterized in that, The inner wall of the sliding block (305) is rotatably connected with a plurality of limiting shaft three (307), and the outer wall of the limiting shaft three (307) is rotatably connected with a connecting rod four (308).

8. The maize thresher with a screening function according to claim 7, characterized in that, The inner wall of one end of each of the plurality of connecting rod four (308) away from the limiting shaft three (307) is rotatably connected with a limiting shaft four (309), the outer wall of the limiting shaft four (309) is rotatably connected with a fixed block (310), and the outer wall of the fixed block (310) is fixedly connected with the bottom outer wall of the shell (1).

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