Wheat threshing and screening device

Abstract

The utility model relates to the technical field of wheat processing, in particular to a wheat threshing and screening device which comprises a bottom plate, a threshing box is fixedly connected to the surface of the bottom plate, a feeding port is formed in the upper end of the threshing box, two threshing cylinders are arranged at the lower end of the feeding port, and the two threshing cylinders are rotationally connected with the inner wall of the threshing box. According to the wheat threshing device, the output end of the motor A drives the driving gear to rotate, so that the threshing cylinder is driven to rotate, wheat is threshed, the wheat can be screened through the screening plate below the threshing cylinder, and the threshing efficiency is improved. When wheat is threshed, the unthreshed wheat slides into the conveying cylinder through the communicating pipe, then the motor B is started, the output end of the motor B drives the spiral blade frame to rotate, the spiral blade frame conveys the wheat into the grain conveying pipe while rotating, the wheat falls into the feeding opening through the grain conveying pipe, and therefore circulating threshing and screening are achieved, and the wheat threshing and screening effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheat processing, in particular to a wheat threshing and screening device. Background Art

[0002] Wheat belongs to the genus Triticeae of the Poaceae family. It is one of the earliest cultivated crops in the world. After a long period of development, it has become one of the food crops with the widest distribution, largest area, highest total output, largest trade volume and highest nutritional value in the world. After the wheat matures, it needs to be threshed with a thresher. A thresher is a harvesting machine, which refers to a machine that can separate wheat grains from wheat ears, mainly referring to the harvesting machinery of food crops.

[0003] During use of the existing wheat threshing and screening device, due to the simple internal structure of the thresher, the wheat grains are not threshed completely, and threshing needs to be repeated many times, which not only increases the workload of the staff, but also seriously affects the work efficiency. Therefore, the utility model provides a wheat threshing and screening device. Utility Model Content

[0004] The utility model aims to solve the problem that the existing wheat threshing and screening devices in the prior art have incomplete threshing of wheat grains due to the simple internal structure of the thresher during use, and threshing needs to be repeated many times, which not only increases the workload of the staff but also seriously affects the work efficiency. A wheat threshing and screening device is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a wheat threshing and screening device, comprising a base plate, a threshing box is fixedly connected to the surface of the base plate, a feed port is arranged at the upper end of the threshing box, and two threshing cylinders are arranged at the lower end of the feed port, the two threshing cylinders are rotatably connected to the inner wall of the threshing box, and one end of the threshing cylinder passes through the side wall of the threshing box and is provided with a driving assembly, a sieve plate is fixedly connected to the inner wall of the threshing box, the sieve plate is located below the threshing cylinder, and a connecting pipe is arranged at one end of the sieve plate, the connecting pipe is located on the outer wall of the threshing box and is connected to the interior of the threshing box, and a circulation assembly is arranged at the other end of the connecting pipe.

[0006] Preferably, the driving assembly includes a driving gear and a driven gear, the driving gear and the driven gear are fixedly connected to one end of the two threshing cylinders respectively, and a motor A is installed on one side of the driving gear.

[0007] Preferably, the circulation component includes a support plate, one end of which is fixedly connected to the side wall of the threshing box, and a conveying cylinder is fixedly connected to the upper surface of the support plate, the side wall of the conveying cylinder is fixedly connected to one end of the connecting pipe, and a spiral blade rack is rotatably connected to the lower surface of the inner wall of the conveying cylinder, the lower end of the spiral blade rack passes through the surface of the support plate and is equipped with a motor B, and the upper end of the conveying cylinder is fixedly connected to a grain conveying pipe.

[0008] Preferably, the side walls of the threshing box are fixedly connected to two slide rails, the inner walls of the two slide rails are slidably connected to a slide bar, and one side of the slide bar is fixedly connected to a screen basket.

[0009] Preferably, a collecting box is provided below the sieve basket, and the diameter of the sieve holes on the surface of the sieve basket is smaller than the diameter of the sieve holes on the surface of the sieve plate.

[0010] In summary, this application includes the following beneficial technical effects:

[0011] In the utility model, the output end of the motor A drives the driving gear to rotate, thereby driving the threshing drum to rotate, and threshing the wheat is performed. The screen plate below the threshing drum can screen the wheat, and the unthreshed wheat will slide into the conveying drum through the connecting pipe, and then the motor B is turned on, and the output end of the motor B drives the spiral blade rack to rotate. While the spiral blade rack rotates, the wheat is conveyed to the grain conveying pipe, and falls into the feed inlet through the grain conveying pipe, thereby achieving cyclic threshing and screening, and improving the threshing and screening effects of wheat. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 For this utility model Figure 1 A side view schematic diagram of the structure;

[0014] Figure 3 It is a schematic diagram of the internal structure of the threshing box assembly and the conveying cylinder assembly of the utility model;

[0015] Figure 4 For this utility model Figure 3 Enlarged view of point A.

[0016] Legend: 1. Bottom plate; 2. Threshing box; 3. Feed port; 4. Threshing cylinder; 5. Driving gear; 6. Driven gear; 7. Motor A; 8. Screen plate; 9. Connecting pipe; 10. Conveying cylinder; 11. Support plate; 12. Motor B; 13. Spiral blade rack; 14. Grain conveying pipe; 15. Slide rail; 16. Slide bar; 17. Screen basket; 18. Collection box. DETAILED DESCRIPTION

[0017] Reference Figure 1-4As shown, the utility model provides a technical solution: a wheat threshing and screening device, comprising a bottom plate 1, a threshing box 2 is fixedly connected to the surface of the bottom plate 1, a feed port 3 is arranged at the upper end of the threshing box 2, and two threshing cylinders 4 are arranged at the lower end of the feed port 3, the two threshing cylinders 4 are rotatably connected to the inner wall of the threshing box 2, and one end of the threshing cylinder 4 passes through the side wall of the threshing box 2 and is provided with a driving component, the inner wall of the threshing box 2 is fixedly connected with a sieve plate 8, the sieve plate 8 is located below the threshing cylinder 4, and one end of the sieve plate 8 is provided with a connecting pipe 9, and the connecting pipe 9 is located in the threshing box 2. The outer wall of the connecting pipe 9 is connected with the interior of the threshing box 2. The other end of the connecting pipe 9 is provided with a circulation component. When the wheat needs to be threshed and screened, the wheat is first poured into the feed port 3, and the two threshing cylinders 4 are driven to rotate by the driving component to thresh the wheat. The sieve plate 8 under the threshing cylinder 4 can screen the wheat, and the unthreshed wheat will slide into the circulation component through the connecting pipe 9, and the unthreshed wheat will be transported to the feed port 3 again through the circulation component, thereby achieving cyclic threshing and screening, and improving the threshing and screening effect of wheat.

[0018] Reference Figure 2 and Figure 3 As shown, in this embodiment: the driving assembly includes a driving gear 5 and a driven gear 6, the driving gear 5 and the driven gear 6 are respectively fixedly connected to one end of the two threshing cylinders 4, and a motor A7 is installed on one side of the driving gear 5. When the motor A7 is turned on, the output end of the motor A7 drives the driving gear 5 to rotate, and the driving gear 5 rotates while driving the driven gear 6 to rotate. The rotation of the two gears drives the threshing cylinder 4 to rotate, so as to achieve the threshing operation of wheat. The circulation assembly includes a support plate 11, one end of the support plate 11 is fixedly connected to the side wall of the threshing box 2, and the upper surface of the support plate 11 is fixedly connected to the A conveying cylinder 10 is connected, and the side wall of the conveying cylinder 10 is fixedly connected to one end of the connecting pipe, and the lower surface of the inner wall of the conveying cylinder 10 is rotatably connected with a spiral blade rack 13, the lower end of the spiral blade rack 13 penetrates the surface of the support plate 11 and is installed with a motor B12, and the upper end of the conveying cylinder 10 is fixedly connected with a grain conveying pipe 14. When unthreshed wheat enters the conveying cylinder 10, the motor B12 is turned on, and the output end of the motor B12 drives the spiral blade rack 13 to rotate. While the spiral blade rack 13 rotates, the wheat is conveyed to the grain conveying pipe 14, and falls into the feed inlet 3 through the grain conveying pipe 14, thereby achieving cyclic threshing and screening.

[0019] Reference Figure 3 and Figure 4As shown, specifically, two slide rails 15 are fixedly connected to the side walls of the threshing box 2, and a slide bar 16 is slidably connected to the inner walls of the two slide rails 15, and a screen basket 17 is fixedly connected to one side of the slide bar 16. The screen basket 17 can be pulled to make the slide bar 16 slide in the slide rail 15, thereby driving the wheat in the screen basket 17 to shake, and the fine dust is filtered through the shaking between the wheat, thereby improving the screening effect of the wheat, and a collecting box 18 is arranged under the screen basket 17, and the diameter of the sieve holes on the surface of the screen basket 17 is smaller than the diameter of the sieve holes on the surface of the screen plate 8. By setting the collecting box 18, the fine dust on the surface of the wheat can be collected, thereby preventing it from falling into the working environment and causing a cleaning burden.

[0020] Working principle: when wheat needs to be threshed and screened, first pour the wheat into the feed port 3, and drive the driving gear 5 to rotate through the output end of the motor A7. The driving gear 5 rotates and drives the driven gear 6 to rotate. The two gears rotate to drive the threshing drum 4 to rotate, so as to thresh the wheat. The sieve plate 8 under the threshing drum 4 can screen the wheat, and the unthreshed wheat will slide into the conveying drum 10 through the connecting pipe 9. Then turn on the motor B12, and the output end of the motor B12 drives the spiral blade frame 13 to rotate. The spiral blade frame 13 rotates and conveys the wheat into the grain conveying pipe 14, and falls into the feed inlet 3 through the grain conveying pipe 14, so as to achieve cyclic threshing and screening, and improve the threshing and screening effect of the wheat. When the screened wheat falls into the screen basket 17, the screen basket 17 can be pulled to make the slide bar 16 slide in the slide rail 15, thereby driving the wheat in the screen basket 17 to shake, so that fine dust can be filtered, thereby improving the screening effect of the wheat, and the dust will fall into the collection box 18 below to avoid falling into the working environment and causing a cleaning burden.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A wheat threshing and screening device, comprising a bottom plate (1), characterized in that: A threshing box (2) is fixedly connected to the surface of the bottom plate (1), a feed port (3) is provided at the upper end of the threshing box (2), and two threshing barrels (4) are provided at the lower end of the feed port (3), the two threshing barrels (4) are rotatably connected to the inner wall of the threshing box (2), and one end of the threshing barrel (4) penetrates the side wall of the threshing box (2) and is provided with a driving assembly, a sieve plate (8) is fixedly connected to the inner wall of the threshing box (2), the sieve plate (8) is located below the threshing barrel (4), and a connecting pipe (9) is provided at one end of the sieve plate (8), the connecting pipe (9) is located on the outer wall of the threshing box (2) and is connected to the interior of the threshing box (2), and a circulation assembly is provided at the other end of the connecting pipe (9).

2. A wheat threshing and screening device according to claim 1, characterized in that: The driving assembly comprises a driving gear (5) and a driven gear (6), wherein the driving gear (5) and the driven gear (6) are fixedly connected to one end of two threshing cylinders (4) respectively, and a motor A (7) is installed on one side of the driving gear (5).

3. A wheat threshing and screening device according to claim 1, characterized in that: The circulation component comprises a support plate (11), one end of which is fixedly connected to the side wall of the threshing box (2), and the upper surface of the support plate (11) is fixedly connected to a conveying cylinder (10), the side wall of the conveying cylinder (10) is fixedly connected to one end of a connecting pipe, and the lower surface of the inner wall of the conveying cylinder (10) is rotatably connected to a spiral blade rack (13), the lower end of which passes through the surface of the support plate (11) and is equipped with a motor B (12), and the upper end of the conveying cylinder (10) is fixedly connected to a grain conveying pipe (14).

4. A wheat threshing and screening device according to claim 1, characterized in that: The side walls of the threshing box (2) are fixedly connected to two slide rails (15), the inner walls of the two slide rails (15) are slidably connected to a slide bar (16), and one side of the slide bar (16) is fixedly connected to a screen basket (17).

5. A wheat threshing and screening device according to claim 4, characterized in that: A collecting box (18) is arranged below the sieve basket (17), and the diameter of the sieve holes on the surface of the sieve basket (17) is smaller than the diameter of the sieve holes on the surface of the sieve plate (8).

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