A flexible wave-type corn cleaning device

Abstract

A flexible wave-type corn cleaning device belongs to the technical field of agricultural machinery; it comprises a frame, a metal screen piece B, a flexible screen piece C, a flexible screen piece B, a flexible screen piece A, a metal screen piece A, a screen frame, a front driving crankshaft, a rear driving crankshaft, a pulley, a bevel gear, a transmission shaft, a screen surface fixing shaft, and a screen surface limiting shaft; during operation, external power is transmitted through the pulley, and the transmission shaft drives the front and rear driving crankshafts respectively to make the screen frame reciprocate in the front and rear and up and down directions, and the screen surface fixing shaft cooperates with the screen surface limiting shaft to make the flexible screen surface perform a wave-like motion, so that the screen surface material moves quickly to the rear of the screen, and is not prone to accumulation, adhesion, clogging of the screen holes, etc.; the invention has a simple, reliable and reasonable structure, high corn kernel cleaning efficiency, and good cleaning quality.

Description

Technical Field

[0001] The invention relates to a flexible wave-type corn cleaning device, belonging to the technical field of agricultural machinery. Background Art

[0002] Most of the existing corn kernel cleaning mechanisms are planar reciprocating vibrations with a relatively simple motion form, and the screen surface is mostly a rigid plane screen. During operation, the motion form of each point on the screen surface is the same, and only one-dimensional screening of corn kernels can be achieved. When the cleaning mechanism feeds a large amount of material or the moisture content of the material is high, the material is not easy to disperse and is easy to adhere to, accumulate, and clog the screen holes on the screen surface. The migration speed to the back of the screen is slow, resulting in reduced operating efficiency and poor cleaning effect and quality. Summary of the invention

[0003] The purpose of the present invention is to provide a flexible wave-type corn cleaning device, which can realize the flexible continuous fluctuation of the screen surface in the upper and lower directions of the screen body, push the material to move quickly behind the screen, and loosen the accumulated and adhered material. By stretching the flexible screen surface, the size and shape of the screen holes are changed to a certain extent, so as to avoid the material from clogging the screen holes, thereby achieving the purpose of improving the cleaning efficiency and cleaning quality of corn kernels.

[0004] The purpose of the invention can be achieved through the following scheme: a flexible wave type corn cleaning device, including a frame, a metal screen surface b, a flexible screen surface c, a flexible screen surface b, a flexible screen surface a, a metal screen surface a, a screen frame, a front driving crankshaft, a rear driving crankshaft, a pulley, a bevel gear, a transmission shaft, a screen surface fixing shaft, and a screen surface limiting shaft, characterized in that the front driving crankshaft and the rear driving crankshaft are rotatably mounted on the front and rear ends of the frame respectively, the transmission shaft is rotatably mounted on the right end of the frame, the front driving crankshaft, the transmission shaft, and the rear driving crankshaft are connected by two sets of bevel gears, the pulley is fixed at the rear end of the transmission shaft, circular holes are opened at the front and rear ends of the screen frame, and the front driving crankshaft and the rear driving crankshaft are rotatably mounted on the circular holes at the front and rear ends respectively, four screen surface fixing shafts are fixed on the screen frame, and three square holes are opened at the left and right ends of the screen frame respectively, and six screen surface limiting shafts are grouped in twos, and are fixed on the frame through the square holes on the screen frame. The screen surface is divided into 5 sections from front to back, namely metal screen surface a, flexible screen surface a, flexible screen surface b, flexible screen surface c, and metal screen surface b. Metal screen surface a and metal screen surface b are located at the front and rear ends of the screen frame, respectively, and are fixed by the screen frame and a screen surface fixing shaft. Flexible screen surface a, flexible screen surface b, and flexible screen surface c are located in the middle of the screen frame, fixed at both ends by the screen surface fixing shaft, and clamped from top to bottom by 2 screen surface limiting shafts in the middle to limit the vertical movement of each section of the flexible screen surface. The installation height of each group of screen surface limiting shafts is different, and they are lowered from front to back.

[0005] The beneficial effects created by the present invention are: the front and rear driving crankshafts are used to drive the entire screen surface to move in two directions, front and rear, and up and down, so as to realize the backward movement and upward throwing of materials; the three-section flexible screen surface is controlled by the screen surface fixing shaft and the screen surface limiting shaft to produce a wave-like motion, so that the material on the screen can be quickly moved to the rear of the screen, and the material can be prevented from accumulating and adhering to the screen surface. The present invention has the characteristics of simple, reliable and reasonable structure, high efficiency in cleaning corn kernels, good cleaning quality, and is suitable for cleaning operations of large feed amounts and high-humidity materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0007] Figure 2 yes Figure 1 Schematic diagram of middle screen surface posture 1.

[0008] Figure 3 yes Figure 1 Schematic diagram of middle screen surface posture 2.

[0009] Figure 4 yes Figure 1 Schematic diagram of middle screen surface posture 3.

[0010] Explanation of part numbers in the figure: 1 frame, 2 metal screen surface b, 3 flexible screen surface c, 4 flexible screen surface b, 5 flexible screen surface a, 6 metal screen surface a, 7 screen frame, 8 front drive crankshaft, 9 rear drive crankshaft, 10 pulley, 11 bevel gear, 12 transmission shaft, 13 screen surface fixing shaft, 14 screen surface limiting shaft. DETAILED DESCRIPTION

[0011] The invention is further described below with reference to the accompanying drawings and examples. A flexible wave-type corn cleaning device comprises a frame 1, a metal screen surface b 2, a flexible screen surface c 3, a flexible screen surface b 4, a flexible screen surface a 5, a metal screen surface a 6. Screen frame 7, front drive crankshaft 8, rear drive crankshaft 9, pulley 10, bevel gear 11, transmission shaft 12, screen surface fixing shaft 13, screen surface limiting shaft 14 are characterized in that the front drive crankshaft 8 and the rear drive crankshaft 9 are rotatably mounted on the front and rear ends of the frame 1 respectively, the transmission shaft 12 is rotatably mounted on the right end of the frame 1, the front drive crankshaft 8, the transmission shaft 12, and the rear drive crankshaft 9 are connected through two sets of bevel gears 11, the pulley 10 is fixedly mounted on the rear end of the transmission shaft 12, the screen frame 7 has circular holes at the front and rear ends, and is rotatably mounted on the front drive crankshaft 8 and the rear drive crankshaft 9 through the circular holes at the front and rear ends respectively, four screen surface fixing shafts 13 are fixedly mounted on the screen frame 7, and three square holes are respectively opened on the left and right ends of the screen frame 7. Six screen surface limiting shafts 14 are grouped in twos, and are fixed on the frame 1 through the square holes on the screen frame 7. The screen surface is divided into 5 sections from front to back, namely metal screen surface a6, flexible screen surface a5, flexible screen surface b4, flexible screen surface c3, and metal screen surface b2, wherein metal screen surface a6 and metal screen surface b2 are respectively located at the front and rear ends of the screen frame 7, and are fixed by the screen frame 7 and a screen surface fixing shaft 13, and flexible screen surface a5, flexible screen surface b4, and flexible screen surface c3 are respectively located in the middle section of the screen frame 7, and are fixed by the screen surface fixing shaft 13 at both ends, and are clamped from top to bottom by two screen surface limiting shafts 14 in the middle to limit the movement of each section of the flexible screen surface in the vertical direction. The installation height of each group of screen surface limiting shafts 14 is different, and they are successively lowered from front to back.

[0012] When the cleaning operation is carried out, external power is transmitted through the pulley 10 to drive the transmission shaft 12. The transmission shaft 12 drives the front drive crankshaft 8 and the rear drive crankshaft 9 to rotate through two sets of bevel gears 11, driving the screen frame 7 to make periodic movements in the up and down and front and back directions. The flexible screen surfaces a5, b4 and c3 on both sides move with the screen frame 7 under the drive of the screen surface fixed shaft 13. The middle parts of the flexible screen surfaces a5, b4 and c3 only move in the front and back directions under the restriction of the screen surface limiting shaft 14. When the screen frame 7 moves to the top, the flexible screen surfaces a5, b4 and c3 are in posture 1. When the screen frame 7 moves to the middle position, the flexible screen surfaces a5, b4 and c3 are in posture 2. When the screen frame 7 moves to the bottom, the flexible screen surfaces a5, b4 and c3 are in posture 4. The flexible screen surface c3 is in posture 3. With the periodic movement of the screen frame 7, the flexible screen surface a 5, the flexible screen surface b 4, and the flexible screen surface c 3 switch between three postures to form a wave-like screen surface movement. When the material to be screened is fed from the threshing device to the front end of the screen surface, the screen surface vibrates periodically in the up and down and front and back directions. The wave-like movement of the flexible screen surface and the airflow provided by the fan (not shown in the figure) jointly push the material to move quickly to the back of the screen, thereby improving the cleaning efficiency. When the material feed amount is large or the moisture content is high, the wave-like movement of the flexible screen surface a 5, the flexible screen surface b 4, and the flexible screen surface c 3 can rub the material accumulated and adhered on the screen surface, rub the material and prevent the decrease in operating efficiency due to the accumulation and adhesion of the material on the screen surface. At the same time, the flexible screen surface a 5, the flexible screen surface b 4, and the flexible screen surface c 3 When switching from posture 2 to postures 1 and 3, it will be stretched to a certain extent, causing the shape and size of the sieve holes on it to change slightly, which can prevent the material from clogging the sieve holes.

[0013] The flexible wave-type corn cleaning device designed by the present invention has the characteristics of simple, reliable and reasonable structure, high cleaning efficiency for corn kernels, good cleaning quality, fast material movement speed on the screen, and is not easy to accumulate, adhere, or clog the screen holes. It is suitable for cleaning operations for large feed volumes and high-humidity materials.

Claims

1. A flexible wave-type corn cleaning device, comprising a frame (1), a metal screen surface b (2), a flexible screen surface c (3), a flexible screen surface b (4), a flexible screen surface a (5), a metal screen surface a (6), a screen frame (7), a front drive crankshaft (8), a rear drive crankshaft (9), a pulley (10), a bevel gear (11), a transmission shaft (12), a screen surface fixing shaft (13), and a screen surface limiting shaft (14), characterized in that The front drive crankshaft (8) and the rear drive crankshaft (9) are rotatably mounted at the front and rear ends of the frame (1), respectively. The transmission shaft (12) is rotatably mounted at the right end of the frame (1). The front drive crankshaft (8), the transmission shaft (12), and the rear drive crankshaft (9) are connected through two sets of bevel gears (11). The pulley (10) is fixedly mounted at the rear end of the transmission shaft (12). The screen frame (7) has circular holes at the front and rear ends. The screen frame (7) is rotatably mounted on the front drive crankshaft (8) and the rear drive crankshaft (9) through the circular holes at the front and rear ends. Four screen surface fixing shafts (13 ) is fixedly mounted on the screen frame (7), and three square holes are respectively opened at the left and right ends of the screen frame (7). Six screen surface limiting shafts (14) are arranged in pairs and pass through the square holes on the screen frame (7) and are fixedly mounted on the frame (1). The screen surface is divided into five sections from front to back, namely, a metal screen surface a (6), a flexible screen surface a (5), a flexible screen surface b (4), a flexible screen surface c (3), and a metal screen surface b (2). The metal screen surface a (6) and the metal screen surface b (2) are respectively located at the front and rear ends of the screen frame (7) and are fixed by the screen frame (7) and a screen surface fixing shaft (13). The flexible screen surface a (5), the flexible screen surface b (4), and the flexible screen surface c (3) are respectively located in the middle section of the screen frame (7), and are fixed at both ends by screen surface fixing shafts (13). The middle is clamped from top to bottom by two screen surface limiting shafts (14) to limit the movement of each section of the flexible screen surface in the vertical direction. The installation height of each group of screen surface limiting shafts (11) is different, and they are successively lowered from front to back.

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